CN111686500A

CN111686500A - Filter element assembly replacing structure and water purifier thereof

Info

Publication number: CN111686500A
Application number: CN201910188354.6A
Authority: CN
Inventors: 赵辉; 陈小波; 陈琦
Original assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Current assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-09-22

Abstract

The application discloses structure and water purifier are changed to filter element group spare, the structure is changed to filter element group spare includes: a filter element assembly, a base for mounting the filter element assembly, a locking mechanism for locking the filter element assembly to the base, an unlocking member for unlocking the locking mechanism; wherein, the filter element component is provided with a stress piece for receiving the force applied by a user; the force-bearing piece is provided with a first position and a second position through action; the force-bearing piece can push the unlocking piece to open the locking mechanism when moving from the first position to the second position; the filter element assembly is insertable toward the base with the force-receiving member in the second position until locked by the locking mechanism. The application provides a filter element group spare is changed structure and water purifier thereof can convenience of customers change the filter element group spare of water purifier.

Description

Filter element assembly replacing structure and water purifier thereof

Technical Field

The application relates to the field of water purifiers, in particular to a filter element component replacing structure and a water purifier with the same.

Background

With the increasing health awareness of people and the increasing income level of people, more and more people pay attention to the health problem of drinking water. Because water is an essential substance for life and metabolism, the quality of drinking water is directly related to the health degree of human body. According to the investigation of the world health organization, 80 percent of human diseases are related to water, and poor water quality can cause various diseases. Tap water has long been considered safe and sanitary.

However, tap water is often affected due to increasing water pollution, and the safety of tap water is questioned. Along with the hidden trouble of water resource pollution, a batch of novel equipment, namely water purifiers, aiming at purifying water quality is promoted, and the rapid development is realized in a short time. The water purifier is an indispensable drinking water device for each family in the future for a longer time without any suspense. Most of water purifiers in the current market adopt physical filtration, and the main filtration grades comprise PP cotton, activated carbon, RO membranes and the like; wherein, the mud, sand rust and the like are filtered by PP cotton, the residual chlorine is absorbed by active carbon, the taste is improved, and the like, and the pure water is filtered by an RO membrane.

Because the water purifier product mainly uses physical filtration as the owner, this has just decided the filter core after using a period, because the attached accumulation of impurity leads to the filter core because the jam became invalid, consequently need regularly to the dismouting change of water purifier filter core.

However, the filter element of the existing water purifier is complex to replace and operate, is relatively labor-consuming, generally needs a professional to operate, brings inconvenience to users, and increases the cost for replacing the filter element.

Disclosure of Invention

In view of the above problems of the prior art, it is an object of the present application to provide a filter element assembly replacing structure and a water purifier thereof, which can facilitate a user to replace a filter element assembly of the water purifier.

In order to achieve the purpose, the application provides the following technical scheme:

a filter cartridge assembly replacement structure comprising: a filter element assembly, a base for mounting the filter element assembly, a locking mechanism for locking the filter element assembly to the base, an unlocking member for unlocking the locking mechanism; wherein,

the filter element component is provided with a stress piece for receiving the force applied by a user; the force-bearing piece is provided with a first position and a second position through action;

the force-bearing piece can push the unlocking piece to open the locking mechanism when moving from the first position to the second position; the filter element assembly is insertable toward the base with the force-receiving member in the second position until locked by the locking mechanism.

As a preferred embodiment, the force receiving member is provided with a pushing portion; the unlocking piece is provided with a bearing surface matched with the pushing part; the pushing part is contacted with the bearing surface when moving from the first position to the second position, so that the unlocking part is pushed to open the locking mechanism;

when the force-bearing piece is positioned at the second position, at least part of the pushing part can move from one side of the bearing surface to the other side of the bearing surface when the filter element assembly is inserted into the base.

In a preferred embodiment, the force-receiving member is adapted such that, when the force-receiving member is in the second position, at least part of the pushing portion is able to extend between the unlocking member and the filter element assembly when the filter element assembly is inserted into the base.

In a preferred embodiment, when the force-receiving member is rotated from the second position to the first position, a part of the pushing part can be moved out from between the unlocking member and the filter element assembly.

As a preferred embodiment, the cartridge component replacement structure further comprises an incised structure; the cutting-in structure is used for enabling the pushing part to cut into and contact with the bearing surface when the stress piece rotates from the first position to the second position.

As a preferred embodiment, the incised structure includes a blocking wall disposed at an end of the unlocking member away from the base; the bearing surface is positioned on the outer side of the barrier wall; one end of the blocking wall along the circumferential direction is a cut-in end of which the outer diameter does not exceed the inner diameter of the pushing part.

As a preferred embodiment, the barrier wall further has a spacer; at least part of the pushing part can extend into the space part and the filter element component; the inner diameter of the cutting end is gradually increased when the cutting end extends to the spacing part.

As a preferred embodiment, an end of the unlocking piece away from the base is provided with an elastic structure; one end of the elastic structure close to the stressed part can elastically act along the radial direction; the bearing surface and the cut-in structure are arranged at one end of the elastic structure close to the stress element.

As a preferred embodiment, the unlocking piece comprises a cylinder body which is arranged on the base and can be sleeved outside the filter element component; the elastic structure comprises a clamping plate arranged on the cylinder body; and a spacing gap is arranged between the two sides of the clamping plate along the circumferential direction and the cylinder body.

As a preferred embodiment, the clamping plate and the cylinder are integrally formed.

In a preferred embodiment, at least a portion of the clamping plate has a thickness greater than a wall thickness of the barrel.

As a preferred embodiment, the clamping plate is provided with a connecting part close to the base and a bearing part far away from the base; the width of the connecting part along the circumferential direction is smaller than that of the bearing part along the circumferential direction.

As a preferred embodiment, the force-receiving member includes a handle rotatably mounted to the filter element assembly; the handle is gradually erected when being rotated from the first position to the second position;

the two ends of the handle are respectively provided with one pushing part, and the barrel is provided with two corresponding clamping plates.

As a preferred embodiment, the pushing portion includes a pushing surface provided on the force receiving member to rotate about a rotation axis; when the rotating member rotates from the first position to the second position, the distance between the contact part of the pushing surface and the receiving surface and the rotating axis gradually increases.

As a preferred embodiment, at least a part of the radial thickness of the pushing portion is gradually reduced in a direction away from the rotation axis.

In a preferred embodiment, the filter element component replacing structure is further provided with a guide structure; the guide structure is used for aligning the pushing part and the spacing part along the direction of the filter element assembly.

In a preferred embodiment, the side wall of the filter element component is provided with a guide projection;

the guide structure comprises a guide surface arranged on the inner wall of the cylinder body and a guide through hole for penetrating the cylinder wall of the cylinder body; the guide surface extends spirally from one end far away from the base to one end close to the base; one end of the guide surface, which is close to the base, is communicated with the guide through hole; the guide surface is used for receiving the guide bulge so as to guide the guide bulge into the guide through hole; the guide through hole extends along the length direction of the filter element assembly.

As a preferable embodiment, in the length direction of the filter element assembly, the distance between the receiving surface and the lower end of the guide surface is smaller than the distance between the pushing part and the guide protrusion in the state that the force receiving part is located at the second position.

In a preferred embodiment, the inner wall of the cylinder is provided with at least one guide surface, and the angle of the spiral extension of the guide surface is an integral multiple of 180 degrees.

As a preferred embodiment, the force receiving member is provided with a pushing portion for pushing the unlocking member; the pushing part is provided with a pushing position and a releasing position which can be switched; when the pushing part is positioned at the releasing position, the stress piece does not interfere with the unlocking piece; when the pushing part is located at the pushing position, the pushing part can push the unlocking piece to open the locking mechanism.

As a preferred embodiment, the force-receiving member can drive the pushing portion to rotate around a rotation axis; the pushing portion is movable along the rotation axis to switch between the pushing position and the releasing position.

As a preferred embodiment, an elastic member that applies an elastic force to the urging portion to move toward the release position is further provided.

In a preferred embodiment, the filter element assembly is insertable into the base until locked by the locking mechanism when the force-receiving member is in any position between the first position and the second position.

A water purifier, comprising: the filter element assembly replacement structure according to any one of the above embodiments.

Has the advantages that:

the filter element subassembly replacement structure that this embodiment provided is through being equipped with the atress piece, and convenience of customers passes through the atress piece and operates filter element subassembly, and is very convenient. When dismantling the filter element subassembly, the user to the atress spare application of force with it from first position action to the second position can, it is convenient to dismantle. When installing filter element group spare, filter element group spare is in the atress piece is located the state of second position down to the base inserts until by locking mechanical system locks to even the atress piece is under the second position state, the user still can need not to change the state of atress piece, installs filter element group spare to the base on, convenience of customers operates.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic illustration of a filter cartridge assembly replacement configuration provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a force-receiving member of FIG. 1;

FIG. 3 is a schematic view of another force-receiving member and pushing member configuration of FIG. 1;

FIG. 4 is a schematic view of FIG. 3 with a cover;

FIG. 5 is a schematic view, partially in section, of the filter element assembly of FIG. 1 inserted into a base;

FIG. 6 is a schematic view, partially in section, of the filter element assembly of FIG. 1 inserted into a base;

FIG. 7 is a schematic view of the base of FIG. 1;

FIG. 8 is a schematic illustration of an alternative filter cartridge assembly replacement configuration provided in an embodiment of the present invention;

FIG. 9 is a schematic view, partially in section, of the filter element assembly of FIG. 8 inserted into a base;

FIG. 10 is a schematic view, partially in section, of the filter element assembly of FIG. 8 inserted into a base;

FIG. 11 is a schematic view of the base of FIG. 8;

FIG. 12 is a schematic view of the knob of FIG. 8;

FIG. 13 is a schematic view of the support cylinder configuration of FIG. 8;

FIG. 14 is a schematic view of the support cylinder configuration of FIG. 8;

FIG. 15 is a schematic view of the filter cartridge assembly of FIG. 8;

FIG. 16 is an enlarged view of a portion of FIG. 15;

FIG. 17 is a schematic view of a filter element assembly and unlocking member configuration provided in accordance with an embodiment of the present invention;

FIG. 18 is an enlarged view of a portion of FIG. 17;

FIG. 19 is another schematic view of FIG. 17;

FIG. 20 is an enlarged view of a portion of FIG. 19;

FIG. 21 is another schematic view of FIG. 17;

FIG. 22 is a schematic view of the unlocking member of FIG. 17;

FIG. 23 is a top view of FIG. 22;

FIG. 24 is a front view of FIG. 22;

FIG. 25 is an enlarged view of the card of FIG. 22;

FIG. 26 is an internal schematic view of FIG. 22;

FIG. 27 is a schematic structural view of the filter cartridge assembly of FIG. 17;

FIG. 28 is a schematic illustration of another filter cartridge assembly replacement configuration provided in an embodiment of the present invention;

FIG. 29 is a schematic of the filter cartridge assembly of FIG. 28;

FIG. 30 is a schematic view of the pusher of FIG. 28 in a released position;

fig. 31 is a schematic view of the pushing portion of fig. 28 in a pushed position.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

See fig. 1-16. The filter element group spare that provides in the embodiment of this application changes structure includes: a filter element assembly 200; an operating part which can be applied with external force is arranged on the filter element component 200; a stationary base 100 for mounting the filter element assembly 200; a locking mechanism; the locking mechanism has a locking position in which the filter cartridge assembly 200 is fitted on the base 100, and a releasing position in which the filter cartridge assembly 200 is allowed to be detached from the base 100; the operation portion operates the lock mechanism to the release position when externally applied force.

In this embodiment, the base 100 is used for mounting the filter element assembly 200 and is fixed. The base 100 can remain stationary during cartridge installation, and the user can complete removal of the cartridge by cartridge action alone. In an embodiment, the filter element assembly replacement structure may form (part of) a water purifier housing. Wherein the base 100 is stationary with respect to the water purification housing.

The locking mechanism may be located on the base 100 or on the filter cartridge assembly 200. In a possible embodiment, the locking mechanism is located on the filter cartridge assembly 200. The filter cartridge assembly 200 is biased by the operating part so that the locking mechanism is moved from the locking position to the releasing position, and the filter cartridge assembly 200 can be detached from the base 100. In the embodiment shown in fig. 1 to 16, the locking mechanism is located on the base 100, and the filter cartridge assembly 200 is forced by the operating part, so that the locking mechanism is moved from the locking position to the releasing position, and the filter cartridge assembly 200 can be detached from the base 100.

In the present embodiment, the lock mechanism may have a return element (not shown) that applies a biasing force to the lock mechanism to return to the lock position. By means of the reset element, the locking mechanism can be switched over between a locked position and a released position. After the filter cartridge assembly 200 is disengaged from the base 100, the locking mechanism can be reset to the locked position by a reset element. In particular, the return element may comprise a resilient element, such as a spring.

To facilitate user installation of the filter cartridge assembly 200, in a preferred embodiment, the filter cartridge assembly replacement structure may further include an unlocking mechanism. The unlocking mechanism can unlock the locking mechanism when the filter cartridge assembly 200 is inserted into the base 100.

The process of unlocking the locking mechanism by the unlocking mechanism can be referred to as the process of moving the locking mechanism from the locking position to the releasing position, and the maximum position of unlocking (also referred to as the second releasing position) can be the same as the releasing position or different (for example, the opening diameter is larger or smaller than the releasing position, and only the filter element assembly 200 needs to be inserted and locked).

Of course, the opening process of the locking mechanism may also be different from the process of moving the locking mechanism from the locking position to the release position, for example, the process of opening the locking mechanism by the unlocking mechanism may be a push-open reset process in the insertion direction (similar to a hinge swing), and the movement of the locking position to the release position may be a radial translational movement.

The unlocking mechanism may be provided on the filter cartridge mechanism or on the base 100. By providing an unlocking mechanism, the locking mechanism can be actuated open when the filter cartridge assembly 200 is inserted into the base 100. The filter element assembly 200 can be installed on the base 100 by operating the filter element assembly 200 and utilizing the unlocking mechanism, so that the installation of the filter element assembly 200 is completed, and the installation is very convenient.

The filter element assembly 200 in this embodiment has an operation portion for a user to apply force, and the user can unlock and release the locking mechanism to the operation portion of the filter element assembly 200, so that the filter element assembly 200 can be separated from the base 100, and at this time, the user only needs to pull out the filter element assembly 200 from the base 100. The operation part may be a certain part of the filter element assembly 200 for the user to apply force, or may be a force-receiving part of the filter element assembly 200 for the user to apply force. The operating part moves together with the filter cartridge assembly 200 in the process of replacing the filter cartridge assembly 200.

Filter element group spare replacement structure makes the user only need operate filter element group spare 200 in this embodiment, and base 100 keeps stationary simultaneously, need not to operate base 100, and then does benefit to user's one hand and operates filter element group spare 200, and is very convenient. Meanwhile, when the filter element assembly 200 is detached from the base 100 by using the operating part of the filter element assembly 200, the space required for moving the base 100 due to the detachment of the filter element assembly 200 can be reduced even if the base 100 is fixed, and the installation flexibility is improved.

In addition, the base 100 of the filter element assembly replacing structure in the embodiment is fixed, and only the filter element assembly 200 needs to be operated, so that the water purifier can be transversely placed, that is, the length direction of the filter element assembly 200 is parallel to the horizontal direction, and therefore, the water purifier not only has higher installation flexibility, but also is more convenient for a user to operate.

The filter element assembly 200 has an insertion end 1 for inserting the base 100 and an operating end 2 facing away from the insertion end 1. The operating part is positioned on the operating end 2 for the convenience of operation of a user. The operation portion may be provided with a structure facilitating the force application by the user.

In an embodiment, the filter element assembly 200 is a generally cylindrical structure. The insertion end 1 of the filter cartridge assembly 200 may be inserted into the base 100. Accordingly, the base 100 may be provided with an insertion hole 15 into which the insertion end 1 is inserted. Meanwhile, the insertion end 1 and the insertion hole 15 may be provided with a sealing means for preventing fluid leakage and preventing a poor water-making effect. The insertion end 1 is provided with a flow passage which is communicated with the inside of the filter element assembly 200 and is matched and communicated with the flow passage 7 in the base 100, so that the incoming water is filtered.

In one embodiment, the locking mechanism includes a snap-fit assembly 6 disposed on the base 100 and configured to snap-fit the insertion end 1. The snap-fit assembly 6 comprises at least one snap-fit member distributed circumferentially. Wherein at least one of said gripping members is moved radially outwards when said snap-fit assembly 6 is moved from said locking position to said release position. From the release position to the locking position, the at least one catch moves radially inward.

The locking mechanism is mounted inside the base 100 and the clasp comprises a clasp plate disposed inside the base 100. The plurality of gripping panels form a gripping opening and form part of the insertion aperture 15. Wherein the plurality of chucking plates are movable in a radial direction. Springs are provided in the base 100 to apply a biasing force to the plurality of chucking plates to move toward the locking position, so that the chucking plates are maintained at the locking position in the absence of an external force.

Of course, the locking mechanism may also be other mechanisms, such as an insertion structure, a flip structure, and the like. The locking mechanism can be switched between the locking position and the releasing position only by action, and the action of the locking mechanism is not limited to radial movement and can also be in modes of rotation, insertion, deformation and the like.

In the present embodiment, the insertion end 1 is provided with a stopper 12 that engages with the engaging member 6. The blocking portion 12 is blocked by the engaging member 6 when the engaging member 6 is located at the locking position, so that the filter cartridge assembly 200 cannot be separated from the base 100. As shown in fig. 15 and 16, a protruding ring structure 14 is provided on a sidewall of the insertion end 1, and the blocking portion 12 may be an end surface of the protruding ring structure 14 close to the operation end 2.

Specifically, the engaging member 6 is formed with an engaging opening through which the insertion end 1 passes. When the fastening assembly 6 is located at the locking position, the blocking portion 12 is located at a side of the fastening opening away from the operation end 2 and cannot pass through the fastening opening. When the clamping component 6 is located at the releasing position, the blocking part 12 can pass through the clamping opening.

As shown in fig. 9, when the filter element assembly 200 is mounted on the base 100, one side of the engaging assembly 6 away from the operating end 2 has an attaching surface (not shown) capable of attaching to the blocking portion 12, and the attaching surface is engaged with the blocking portion 12 to restrict the insertion end 1 of the filter element assembly 200 from being pulled out from the insertion hole 15 of the base 100, thereby locking the filter element assembly 200.

Bearing in mind the above description, to facilitate the user's installation of the filter element assembly 200 on the base 100, the filter element assembly replacement structure may also be provided with an unlocking mechanism. Wherein the unlocking mechanism is capable of moving at least one clamping member radially outward when the filter element assembly 200 is inserted into the base 100, thereby allowing the blocking portion 12 of the filter element assembly 200 to pass through the clamping opening. After the blocking part 12 passes through the clamping opening, the clamping component 6 is reset to the locking position, and the filter element component 200 is locked.

The unlocking mechanism comprises a first inclined surface 31 arranged on one side of the insertion end 1, which is far away from the operating end 2, of the blocking part 12 and/or on one side of the clamping component 6, which is close to the operating end 2. When the filter element assembly 200 is inserted into the base 100, the blocking part 12 of the filter element assembly 200 depends on the first inclined plane 31 to prop the clamping assembly 6 open to pass through the clamping opening.

In the present embodiment, the size of the engagement opening that is expanded by the unlocking structure may be the same as or different from the size of the engagement opening at the release position. Wherein, the first inclined surface 31 is arranged on the clamping component 6; the first inclined surface 31 causes the cross-sectional area of the engagement opening to gradually decrease in the direction of insertion of the filter cartridge assembly 200 into the base 100.

As shown in fig. 9, the insertion end 1 and the engaging member 6 are provided with first inclined surfaces 31. The first inclined surface 31 of the insertion end 1 is arranged on the bulge loop structure 14 and is located on the side of the blocking portion 12 away from the operation end 2.

In an embodiment, the filter cartridge assembly replacing structure may be further provided with an opening mechanism engaged with the operating part. When the operating portion is externally applied with force, the locking mechanism is moved from the locking position to the releasing position by driving the opening mechanism to move. Wherein the opening mechanism transmits the acting force received by the operating part, so as to open the locking mechanism. The opening mechanism may be part of the filter cartridge assembly 200, such as the embodiment shown in fig. 8-16; the opening mechanism may also be a component external to the filter cartridge assembly 200, such as the embodiment shown in fig. 1-7.

In the present embodiment, the opening mechanism operates to drive the locking mechanism, and the base 100 is fixed during the driving. The locking mechanism is driven to the release position by the opening mechanism by applying a force to the operating portion of the filter cartridge assembly 200 without actuating the base 100. In this embodiment, the opening mechanism can transmit the urging force received by the operation portion to switch the position of the lock mechanism to the release position.

Wherein, the opening mechanism drives the locking mechanism to act through self-action, wherein, the action mode of the opening mechanism has a plurality of modes, for example, the opening mechanism can drive the locking mechanism through moving along the length direction of the filter element component 200, and can also drive the locking mechanism through rotating. Of course, in possible embodiments, the opening mechanism may also effect the actuation of the locking mechanism by other movements, such as: the opening mechanism has two elements that are engaged, and the position switching of the locking mechanism and the like is performed by the separation or engagement of the two elements.

In the specific embodiment shown in fig. 8 to 16. The operating portion rotates the opening mechanism when externally applied with a force, and the opening mechanism drives the locking mechanism to move from the locking position to the releasing position through rotation. In this embodiment, the opening mechanism may be disposed on the filter cartridge assembly 200 to move with the filter cartridge assembly 200. Under such structure, the user only needs to make filter element subassembly 200 rotate to the operating portion application of force, can open locking mechanical system to the release position, accomplishes filter element subassembly 200's dismantlement, easy operation.

In this embodiment, the opening mechanism may rotate with the filter cartridge assembly 200. In particular, the opening mechanism comprises a support 30 projecting radially on the filter cartridge assembly 200. The operating part can drive the filter element assembly 200 to drive the supporting part 30 to rotate around an axis parallel to the length direction of the filter element assembly 200; the support 30 is rotated to radially expand the snap-fit assembly 6 from the locking position to the release position.

The insertion end 1 is circumferentially and uniformly distributed with two or more supporting parts 30. In order to facilitate the radial support of the support 30 to the release position of the catch assembly 6 during the rotation, the support 30 is located at the same axial position as the catch assembly 6 when the filter cartridge assembly 200 is locked by the locking mechanism.

The outer diameter of the support portion 30 may be larger than the outer diameter of the blocking portion 12, or may be smaller than the outer diameter of the blocking portion 12. Of course, in the embodiment shown in fig. 16, an annular groove structure 28 is provided on a side of the blocking portion 12 close to the operation end 2, a supporting portion 30 is provided in the annular groove structure 28, the supporting portion 30 includes supporting protrusions protruding outward in the radial direction, the two supporting protrusions are uniformly arranged in the circumferential direction, and the outer diameter of the supporting portion 30 (the supporting protrusions) is equal to the outer diameter of the blocking portion 12 (of course, the outer diameter of the supporting portion 30 (the supporting protrusions) may not be equal to the outer diameter of the blocking portion 12 in some embodiments).

Further, the engaging component 6 is formed with an engaging opening (not labeled). The edge of the clamping opening is provided with a first part and a second part which have different distances from the axis. The first location is a greater distance from the axis than the second location. The support 30 does not brace the snap-fit assembly 6 to the release position when radially aligned with the first location; the support 30 rotates to align with the second location in the radial direction to spread the snap assembly 6 to the release position. The engaging opening is contacted with the supporting portion 30 through a first portion and a second portion having different distances from the axis, so that the supported portion 30 is radially spread apart at the second portion.

The first location is at a distance of L1 from the axis, the second location is at a distance of L2 from the axis, and the distance from the outer edge of the support 30 to the axis is L3; wherein L1 is more than or equal to L3 and more than L2. Further, the distance between the first part and the axis is the maximum distance between the edge of the clamping opening and the axis; the distance between the edge of the clamping opening and the axis is the minimum distance between the edge of the clamping opening and the axis, the distance between the clamping opening and the axis is gradually reduced from the first part to the second part, and the distance between the second part and the axis is gradually increased from the first part to the second part.

In a specific embodiment, the abutting position of two adjacent clamping pieces forms the first position; the intermediate position of the retainer forms the second location. In a specific embodiment, when the two engaging members are in butt joint at the locking position, the engaging opening formed by the two engaging members is in an ellipse-like shape.

To facilitate the user's removal of the filter cartridge assembly 200 from the base 100, the resistive effect of the sealing engagement between the insertion end 1 and the base 100 is reduced. In a preferred embodiment, the base 100 is further provided with a push-out structure. When the filter element assembly 200 drives the support portion 30 to rotate from the first position to the second position, the pushing structure pushes the filter element assembly 200 out along the direction of the base 100 along the filter element assembly 200.

Specifically, the base 100 has an insertion opening into which the filter element assembly 200 is inserted; the pushing-out structure includes an arc-shaped protrusion 19 disposed on one side of the base 100 having the insertion opening. Specifically, the arc-shaped protrusion 19 is located on the surface of the base 100 where the insertion opening is formed. The height of the arc-shaped protrusion 19 protruding from the surface of the base 100 is gradually increased in the direction in which the support portion 30 rotates from the first position to the second position. In particular, the arcuate projections 19 may be positioned smaller than the outer diameter of the filter element assembly 200. The annular surface of the filter element assembly 200 facing away from the operating end may be provided with projections 29 (ribs in fig. 16) that cooperate with the arcuate projections 19. The filter cartridge assembly 200 is formed with an annular surface around the insertion end 1.

When the filter element assembly 200 is mounted on the base 100, the annular surface of the filter element assembly 200 conforms to the surface of the base 100. At this time, the protruding portion 29 of the filter element assembly 200 is located at the lowest position of the arc-shaped protrusion 19 (not protruding the surface of the base 100), the filter element assembly 200 is rotated to drive the protruding portion 29 to rotate around the axis, and the protruding portion 29 and the arc-shaped protrusion 19 deviate from the upper end surface of the long strip shape of the base 100 to contact with each other and are supported by the arc-shaped protrusion 19. As the filter element assembly 200 continues to rotate axially, the arcuate projections 19 progressively push the projections 29 in a direction that disengages the filter element assembly 200 from the base 100 to progressively disengage the filter element assembly 200 from the base 100.

Of course, the pushing-out structure is not limited to the above-mentioned form of the arc-shaped protrusion 19, and may also be a guide rail or the like gradually far away from the base 100 along the rotation direction from the first position to the second position, and the pushing-out structure may also be disposed on the filter element assembly 200, and the pushing-out structure converts the rotation of the filter element assembly 200 into an acting force that makes the filter element assembly 200 far away from the base 100 along the axial direction, and pushes the filter element assembly 200 out of the base 100.

In the present embodiment, the operation unit includes a knob 20 fixed to the operation end 2. The filter element assembly 200 is rotated by the knob 20. Wherein the knob 20 is of a flat structure and is perpendicular to the end surface of the operating end 2. In other embodiments, the operating portion may also be in the form of a handle, and in consideration of various implementation manners of the operating portion, only the filter element assembly 200 needs to be driven to rotate, and the present application is not limited thereto.

The above embodiment is supported by the supporting portion 30 and the engaging member 6. When the filter cartridge assembly 200 is insert-mounted to the base 100, the filter cartridge assembly 200 may be inserted toward the base 100 along a direction in which the support part 30 is aligned with the first site of the engagement opening. The filter element assembly 200 radially expands the clamping assembly 6 under the action of the first inclined surface 31 (unlocking mechanism) to enable the blocking part 12 to pass through the clamping opening, and then the clamping assembly 6 is reset to the locking position to lock the filter element assembly 200. At this time, the support portion 30 does not affect the stopper portion 12 by the engaging member 6, and the engaging member 6 is not pushed open, and the engaging member 6 and the support portion 30 are located at the same axial position. The outer edge of the supporting portion 30 may be connected to the edge (also referred to as inner surface or inner edge) of the engaging opening.

When the insertion end 1 is in contact with the engaging member 6, due to the existence of the restoring element, the user can apply a force to the filter element assembly 200 to push the filter element assembly 200 along the length direction of the filter element assembly 200 through the operation part, and push the engaging member 6 along the radial direction by means of the first inclined surface 31, so as to expand the engaging diameter radially, so that the blocking part 12 passes through the engaging member 6.

To facilitate the user's installation of the filter cartridge assembly 200 with the locking mechanism locking the filter cartridge assembly 200, it is necessary to position the support 30 at the first location of the snap assembly 6. In this regard, the base 100 may also be provided with a guide structure. The guide structure can guide the support 30 to the first position when the filter cartridge assembly 200 is inserted into the base 100.

By this guiding structure, the supporting portion 30 can be guided to the position where the supporting portion 30 is aligned with the first portion along the length direction of the filter element assembly 200 (which can also be regarded as the axial direction), and the supporting portion 30 is aligned with the first portion in the radial direction when the filter element assembly 200 is locked by the engaging assembly 6 (i.e. the filter element assembly 200 is in the state of being mounted on the base 100) by applying force to the operating portion to pass the blocking portion 12 through the engaging opening. So, filter element subassembly 200 can be located preset position when the installation, rotates filter element subassembly 200 through the operation portion and can realize that block subassembly 6 unblock to release position, and it is very convenient to operate, also need not user manual location filter element subassembly 200 position, and the installation is dismantled all very swiftly.

In particular, the guide structure comprises a first guide rail 21. The filter element assembly 200 is provided with a guide protrusion 26 moving along the first guide rail 21. When the filter cartridge assembly 200 is inserted into the base 100, the guide protrusion 26 moves along the first guide rail 21 and the support 30 is guided to the first location.

In addition, in order to make it easier for the user to know that the support part 30 is aligned with the second position when the filter element assembly 200 is detached, the fastening assembly 6 is spread to the release position, and the user is prevented from being unable to pull out the filter element assembly 200 due to improper or excessive rotation. The guide structure further includes a second guide rail 22 for movement of the guide projection 26, and a communication guide rail 23.

Wherein the communication rail 23 communicates the first rail 21 with the second rail 22. When the guide projection 26 moves along the communication guide rail 23, the support portion 30 expands the engaging member 6 from the locking position to the releasing position. When the filter element assembly 200 is moved away from the base 100, the guide projection 26 moves along the communication guide 23. Further, the second guide rail 22 extends linearly along the length direction of the filter element assembly 200; the first guide rail 21 extends along the length direction of the filter element assembly 200 in a bending way; the communication guide rail 23 extends in the circumferential direction.

As shown in fig. 13 and 14, a first guide rail 21, a second guide rail 22, and a guide rail 23 connecting the first guide rail 21 and the second guide rail 22 form a guide rail group. The guide structure includes two guide rail sets, a first access 24 and a second access. The first access opening 24 and the second access opening are used for the guide projection 26 to enter and exit the guide rail set. The guide projection 26 is removable from the guide structure through the first and

second access openings

24, 26 to allow the filter element assembly 200 to be completely removed for replacement.

Wherein the first track 21 of one track group and the second track 22 of the other track group are in communication with the first access 24. The second guide rail 22 in the guide rail group and the first guide rail 21 in the other guide rail group are both communicated with the second inlet and outlet. The two guide rail groups can be symmetrically distributed, and two guide protrusions 26 can be correspondingly arranged in the circumferential direction of the filter element component 200 and respectively enter and exit the first inlet and outlet 24 and the second inlet and outlet. In other embodiments, the first rail 21 and the second rail 22 may not share the same access opening.

The first rail 21, the second rail 22, and the communicating rail 23 may be a through hole structure having a long shape, or may be a groove structure 28 providing a moving track. In the embodiment shown in fig. 13 to 14, the base 100 is further provided with a support cylinder 300; the support cylinder 300 is sleeved outside the filter element assembly 200 when the filter element assembly 200 is installed on the base 100. The guide structure is disposed on the support cylinder 300. The first guide rail 21, the second guide rail 22, and the communication guide rail 23 penetrate the support cylinder 300 in the radial direction. Of course, the first rail 21, the second rail 22, and the communication rail 23 may be all in the form of grooves.

The embodiments shown in fig. 8 to 16 in the present application are described in detail below in order to better understand the present application.

As shown in fig. 15. The filter cartridge assembly 200 has a cylindrical body 27, and an insertion end 1. The end surface of the filter element assembly 200 facing away from the end of the insertion end 1 is provided with a knob 20 of flat configuration forming an operating part. The filter cartridge assembly 200 can be rotated about an axis parallel to the length of the filter cartridge assembly 200 by the knob 20.

The base 100 is provided with an insertion hole 15 into which the insertion end 1 is inserted, and an insertion opening is formed on an outer surface of the base 100. A support cylinder 300 is also fixedly connected to the base 100. The support cylinder 300 surrounds the filter element assembly 200 when the filter element assembly 200 is mounted on the insertion base 100. The support cylinder 300 can support the filter element assembly 200 to prevent all weight of the filter element assembly 200 from being borne by the junction of the insertion end 1 and the insertion hole 15, and at the same time, prevent the filter element assembly 200 from being exposed to dust over a long period of time.

The support cylinder 300 is further provided with a guide structure for guiding the insertion or extraction of the filter element assembly 200. Wherein, the guide structure comprises two guide rail groups, a first access 24 and a second access. Each track group comprises one said first track 21, one said second track 22 and a track 23 connecting the first track 21 and the second track 22. The first guide rail 21 extends circumferentially along the longitudinal direction of the support cylinder 300, and the second guide rail 22 extends linearly along the longitudinal direction of the support cylinder 300.

As shown in fig. 13 and 14, the first rail 21 of one rail set and the second rail 22 of the other rail set communicate with the first access 24; the second guide rail 22 in the guide rail group and the first guide rail 21 in the other guide rail group are both communicated with the second inlet and outlet. A communicating section 25 is also provided between the first and

second guide rails

21, 22 and the first access opening 24, the communicating section 25 also extending linearly, and the communicating section 25 is configured to guide the filter element assembly 200 into the first guide rail 21 when the filter element assembly 200 moves along the communicating section 25 away from the first access opening 24. The base 100 and the support cylinder 300 may be connected to each other or indirectly, and the present application is not limited thereto. The base 100 and the support cylinder 300 may participate in forming an outer case of the water purifier.

The outer diameter of the insertion end 1 is smaller than the outer diameter of the cylindrical body 27 of the filter cartridge assembly 200. The inserting end 1 is provided with a convex ring structure 14, one side of the convex ring structure 14 close to the operating end 2 is provided with a blocking surface (a blocking part 12) and a supporting bulge (a supporting part 30). The outer diameter of the support protrusion is equal to the outer diameter of the torus structure 14. The supporting protrusions are uniformly distributed with two parts along the circumferential direction, so that the clamping component 6 can be unfolded to a release position by rotating 90 degrees. The side of the collar structure 14 facing away from the operating end 2 is provided with a first inclined surface 31.

The base 100 has a base housing, an engagement port is provided in the base housing, and the engagement unit 6 is mounted in the base housing and forms an engagement port located inside the insertion port (the insertion port and the engagement port are both a part of the insertion hole 15). The clamping assembly 6 has two abutting clamping plates, each of which is provided with an arc-shaped edge forming the edge of the clamping opening. The butt joint parts of the two clamping plates form two first parts which are in one-to-one correspondence with the two supporting bulges. When the supporting protrusions are rotated by 90 degrees, the two supporting protrusions are respectively aligned with the middle positions of the two clamping plates, and the two clamping plates are pushed outwards along the radial direction to the releasing position. The base 100 is provided inside with an elastic member for applying movement toward the locking position to the two chucking plates. The edge of the engagement opening is also provided with a first bevel 31, which cooperates with the first bevel 31 of the collar structure 14 to be pushed away and passed by the collar structure 14.

When a user needs to detach the filter element assembly 200 from the base 100 (or the water purifier housing), the user firstly rotates the filter element assembly 200 through the knob 20, the guide protrusion 26 on the filter element assembly 200 rotates 90 degrees to one end of the second guide rail 22 around the communication guide rail 23, and the wall of the end part of the communication guide rail 23 can prevent the guide protrusion 26 from continuously moving along the circumferential direction, so that the user is reminded that the filter element assembly 200 can be pulled out at the moment. In the process of rotating the filter element assembly 200, the support protrusion rotates from the first position to the second position to expand the clamping assembly 6 from the locking position to the releasing position. Meanwhile, under the action of the arc-shaped protrusion 19, the filter element assembly 200 automatically moves out for a certain distance along with the rotation (in the pulling direction), and the force application of a user is reduced. The user pulls the filter element assembly 200 outwardly and the two guide projections 26 move along the second guide rail 22 until they are removed from the first and

second access openings

24, 24.

When a user needs to mount the (new) filter element assembly 200 on the base 100 (or the water purifier housing), the user enters the two guide protrusions 26 into the guide structure from the first access opening 24 and the second access opening, and continues to push the filter element assembly 200 and guide it into the first guide rail 21 by the communicating section 25 until the two support protrusions are axially aligned with the two first portions. Then, the filter element assembly 200 is pushed continuously towards the base 100 by the knob 20, the insertion end 1 of the filter element assembly 200 opens and passes the clamping assembly 6 through the first inclined surface 31, the insertion end 1 is locked after the blocking part 12 passes and the clamping assembly 6 returns to the locking position, and the two supporting parts 30 are aligned with the two first parts along the radial direction, so that the installation work of the filter element assembly 200 is completed.

See the embodiments shown in fig. 1-7. The operating part moves the opening mechanism in the length direction of the filter element assembly 200 when externally applied force. The opening mechanism actuates the locking mechanism from the locking position to the release position by moving along the length of the filter cartridge assembly 200.

In this embodiment, the opening mechanism may be removably mounted to the base 100 or may be removably mounted with the filter element assembly 200. Of course, the opening mechanism may also include a plurality of separately removable components, with a partial number of the components being mounted on the base 100 and another partial number of the components being mounted on the filter cartridge assembly 200.

Specifically, the operation portion is provided with a rotatable force receiving member 3. The opening mechanism comprises a spreader 4 cooperating with the force-bearing member 3. The expanding piece 4 can move along the direction of inserting the filter element assembly 200 into the base 100 when the force-bearing piece 3 is forced to rotate, and expands the clamping assembly 6 from the locking position to the releasing position.

To reduce the resistance of the sealing means between the filter element assembly 200 and the base 100, the force receiving member 3 is rotated to move the filter element assembly 200 away from the base 100. Specifically, after the spreader 4 moves along the length direction of the filter element assembly 200 to open the engaging assembly 6 to the release position, the spreader 4 can be limited by the base 100 and cannot move to the base 100 along the direction of the filter element assembly 200. At this point, the force-receiving member 3 can continue to rotate, and the spreader member 4 applies an opposing force to the force-receiving member 3 or the filter element assembly 200, pushing the filter element assembly 200 in a direction away from the base 100.

One end of the expanding piece 4 close to the base 100 is provided with an expanding part; the clamping component 6 is provided with an acting part which can be matched with the opening part. Wherein the distracting part and/or the acting part is provided with a second bevel 13. The second inclined surface 13 causes the spreader 4 to radially spread the catch assembly 6 from the locked position to the released position when moving in the direction of insertion of the filter element assembly 200 into the base 100.

The force-receiving member 3 rotates about an axis of rotation perpendicular to the length of the filter element assembly 200. The force-receiving member 3 has a first rotational position and a second rotational position in its rotational direction. When the rotating member rotates from the first rotating position to the second rotating position, the opening member 4 is pushed to move along the direction of inserting the filter element assembly 200 into the base 100.

Wherein the force-receiving member 3 comprises a handle. To facilitate the user's handling operation, the handle is gradually erected at the end of the filter element assembly 200 away from the insertion end 1 when rotated from the first rotational position to the second rotational position. In the embodiment shown in fig. 2 to 4, the force-receiving member 3 is semicircular and both ends are rotatably connected to the operating end 2. It should be noted that the force receiving member 3 of the present application is not limited thereto, and the force receiving member 3 may also have other shapes, such as a straight rod shape, a broken line shape, a partial arc shape, and the like.

In order to move the spreader 4 in the direction of the base 100 by means of a rotatable element, the rotatable element has, in the embodiment shown in fig. 2, a pushing surface 8 which rotates together about the axis of rotation. When the rotating member rotates from the first rotating position to the second rotating position, the distance between the contact position of the pushing surface 8 and the spreader 4 and the rotating axis gradually increases.

Referring to fig. 2, the pushing surfaces 8 are located at two ends of the rotating member, and the pushing surfaces 8 may be a curved surface structure. The rotatable member in this embodiment is simple in construction and the spreader member 4 can be urged to move along the length of the filter element assembly 200 by providing a push surface 8 on the rotatable member which rotates together about an axis of rotation (perpendicular to the length of the filter element assembly 200, i.e. perpendicular to the axis about which the pivot 9 provides the axis of rotation).

In another embodiment, as shown in fig. 3 and 4, the opening mechanism further comprises a pusher 10 provided at the operating end 2. The force-receiving member 3 moves the pushing member 10 radially outward when rotating from the first rotational position to the second rotational position. The pusher members 10, when moved radially outwardly, move the spreader 4 in the direction of insertion of the filter cartridge assembly 200 into the base 100. To avoid exposing the pushing member 10, a shielding cover 18 may be further provided on the operation end 2 to shield the pushing member 10.

Wherein the rotating member is further provided with a push rod 16 connecting both ends thereof. The operating end 2 is provided with two pushing members 10, and when the rotating member rotates from the first rotating position to the second rotating position, the pushing rod 16 directly pushes one pushing member 10 radially outward, and accordingly, the pushing member 10 simultaneously pushes the other pushing member 10 in the opposite direction (illustratively, the two pushing members 10 simultaneously engage with a fixed gear, by which the two pushing members 10 move in the opposite radial directions). Specifically, the outer end of the pushing member 10 in the radial direction is provided with a third inclined surface 11. When the pushing member 10 moves radially outwards, the pushing member 4 is pushed by the third inclined surface 11 to move along the direction of inserting the filter element assembly 200 into the base 100.

The 4 pieces of the opening member include a cylindrical structure which is installed on the base 100 and can be sleeved outside the filter element assembly 200. The opening part is arranged at one end of the cylinder structure close to the base 100. The barrel structure is movable relative to the base 100 along the length of the filter element assembly 200. That is, the distractor 4 is movably (indirectly or directly) supported on the base 100. One end of the cylinder structure near the base 100 is provided with two or more insertion protrusions 5 along the circumferential direction, and the second inclined surface 13 is arranged on the insertion protrusions 5.

In this embodiment, as shown in fig. 7, the base housing is provided with a plurality of rectangular openings 17, and the active portion of the chucking plate (also a protruding structure, which is part of the chucking plate at the position indicated by reference numeral 6 in fig. 7) is located in the rectangular openings 17 and is also provided with the second inclined surface 13. When the upper end of the cylindrical structure of the spreading part 4 is pushed by the rotating part, the spreading part 4 drives the inserting protrusion 5 to move towards the base 100, and the spreading part is matched with the acting part to convert the axial movement of the spreading part 4 into the radial movement of the clamping plate, so that the clamping component 6 moves to the releasing position.

In this embodiment, a support cylinder 300 is further provided on the base 100. The support cylinder 300 is sleeved outside the filter element assembly 200 when the filter element assembly 200 is installed on the base 100. The above-mentioned cylinder structure is sleeved between the supporting cylinder 300 and the filter element assembly 200. Wherein the spreader 4 is movably mounted on the support cylinder 300.

The embodiments shown in fig. 1 to 7 of the present application are described in detail below in order to better understand the present application.

The filter cartridge assembly 200 has a cylindrical body 27, and an insertion end 1. The end surface of the filter element assembly 200, which faces away from the operation end 2 of the insertion end 1, is provided with a rotatable semicircular handle. The spreader (spreader 4) can be pushed along the length of the filter element assembly 200 by erecting the handle on the end face of the handle end 2.

The expanding cylinder is movably supported in the support cylinder 300, and the base 100 is provided with an insertion hole 15 into which the insertion end 1 is inserted, and an insertion opening is formed on an outer surface of the base 100. A support cylinder 300 is also fixedly connected to the base 100. The support cylinder 300 surrounds the filter element assembly 200 when the filter element assembly 200 is mounted on the insertion base 100. The support cylinder 300 can support the filter element assembly 200 to prevent all weight of the filter element assembly 200 from being borne by the junction of the insertion end 1 and the insertion hole 15, and at the same time, prevent the filter element assembly 200 from being exposed to dust over a long period of time. The support cylinder 300, as well as the spreader cylinder, may both guide the insertion or removal of the filter cartridge assembly 200, facilitating alignment of the insertion end 1 with the insertion port of the base 100 when installed.

The outer diameter of the insertion end 1 of the filter cartridge assembly 200 is smaller than the outer diameter of the cylindrical body 27 of the filter cartridge assembly 200. The inserting end 1 is provided with a convex ring structure 14, and one side of the convex ring structure 14 close to the operating end 2 is provided with a blocking surface (a blocking part 12). The side of the collar structure 14 facing away from the operating end 2 is provided with a first inclined surface 31.

The base 100 has a base housing, an engagement port is provided in the base housing, and the engagement unit 6 is mounted in the base housing and forms an engagement port located inside the insertion port (the insertion port and the engagement port are both a part of the insertion hole 15). The snap-fit assembly 6 has two abutting gripping plates (one type of gripping member) each provided with an arcuate edge forming the edge of the snap-fit opening. The butt joint parts of the two clamping plates form two first parts which are in one-to-one correspondence with the two supporting bulges.

An elastic member for applying movement toward the locking position to the two chucking plates is provided inside the base 100. The edge of the engagement opening is also provided with a first bevel 31, which cooperates with the first bevel 31 of the collar structure 14 to be pushed away and passed by the collar structure 14. The base housing is provided with a rectangular opening 17, and the active part of the clamping plate extends into the rectangular opening 17 and is matched with the insertion protrusion 5 at the end part of the expansion cylinder. Due to the elastic member, when the filter element assembly 200 is mounted on the base 100 or not mounted on the base 100 (i.e. the engaging assembly 6 is in the locking position), the clamping plate pushes the spreader 4 away from the base 100 via the first inclined surface 31, so that the spreader 4 is reset.

When the user needs to detach the filter cartridge assembly 200 from the base 100 (or the water purifier housing), the user first erects the handle at the operation end 2 by turning the handle. As the handle is erected, the pushing surface 8 of the handle pushes the deployment barrel toward the base 100. The expanding cylinder enables the clamping plate to move along the radial direction under the action of the second inclined surface 13 so as to open the clamping opening to the releasing position. The handle continues to be erected, the end of the insertion protrusion 5 is pushed against the limit (for example, the limit part on the chucking plate or on the base 100) and cannot continue to move towards the base 100, and at this time, the filter element assembly 200 automatically moves outwards (in the pulling direction) by a certain distance along with the rotation of the handle under the reaction force of the opening cylinder, so as to reduce the force applied by the user. Finally, the user only needs to pull out the filter element assembly 200, and the filter element assembly 200 does not need to rotate in the pulling-out process.

When a user needs to mount the (new) filter element assembly 200 on the base 100 (or the water purifier housing), the filter element assembly 200 is fed into the expanding cylinder and the support cylinder 300 by using a handle or a cylindrical cylinder of the filter element assembly 200 while holding it directly. Then, the filter element assembly 200 is pushed to the base 100, the insertion end 1 of the filter element assembly 200 supports the fastening assembly 6 through the first inclined surface 31 and passes through, and after the blocking part 12 passes through the first inclined surface, the fastening assembly 6 is reset to the locking position to lock the insertion end 1, so that the installation work of the filter element assembly 200 is completed.

Of course, when the handle is in the upright state (in the second rotation position) during the insertion process, the pushing surface 8 of the handle may also directly push the supporting cylinder to move toward the base 100, and the second inclined surface 13 drives the engaging member 6 from the locking position to the releasing position, so as to ensure that the blocking portion 12 of the insertion end 1 passes through the engaging opening. Further, the force receiving member 3 and the spreader 4 in this embodiment may also serve as an unlocking mechanism, and the first inclined surface 31 in the above embodiment may not be provided.

Please refer to fig. 17 to 27. The embodiment of the application provides a filter element subassembly change structure, includes: a filter element assembly 200, a base 100 for mounting the filter element assembly 200, a locking mechanism for locking the filter element assembly 200 on the base 100, an unlocking member 40 for unlocking the locking mechanism.

Wherein, the filter element assembly 200 is provided with a force receiving member 3 for receiving a force applied by a user. The force-receiving member 3 has a first position and a second position by action. As shown in fig. 17 and 19, fig. 17 is a schematic view of the state in which the force receiving member 3 is mounted on the base 100 when it is located at the first position. Fig. 19 is a schematic view showing the filter cartridge assembly 200 inserted into the base 100 when the force-receiving member 3 is in the second position.

The force-receiving member 3 can push the unlocking member 40 to open the locking mechanism when moving from the first position to the second position. The filter cartridge assembly 200 can be inserted into the base 100 until locked by the locking mechanism in a state where the force-receiving member 3 is located at the second position.

The force-receiving member 3 has a first position and a second position by action, which may be in the form of rotation, translation, or even turning. The force applied by the force receiving member 3 may be a turning force or a pressing force. Preferably, the force-receiving member 3 is rotatable about an axis of rotation. Specifically, in the present embodiment, for the convenience of the user, the force-receiving member 3 can rotate around a pivot shaft 9, the first position can be the first rotation position in the above-mentioned embodiment, and the second position can be the second rotation position in the above-mentioned embodiment.

In this embodiment, the base 100 is provided for mounting the filter cartridge assembly 200. The base 100 may be stationary or movable. For example, the base 100 may be actuated during the process of unlocking the locking mechanism. Of course, the base 100 preferably remains stationary in this embodiment.

The locking mechanism may be located on the base 100 or on the filter cartridge assembly 200, and the application is not limited thereto. In this embodiment, the base 100 and the locking mechanism can refer to the base 100 and the locking mechanism in the above embodiments, and are not described again in this embodiment.

The unlocking member 40 can unlock the locking mechanism. Depending on the locking form of the locking mechanism, the unlocking member 40 has different unlocking structures. The unlocking member 40 can refer to the opening member in the above embodiment. Of course, the unlocking member 40 may be further configured to engage the force-receiving member 3 to maintain the ease of installation and removal of the filter element assembly 200 by the user.

The filter element subassembly replacement structure that this embodiment provided is through being equipped with atress piece 3, and convenience of customers passes through atress piece 3 and operates filter element subassembly 200, and is very convenient. When dismantling filter element group spare 200, the user to atress piece 3 application of force with it from the first position action to the second position can, it is convenient to dismantle. When the filter element assembly 200 is installed, the filter element assembly 200 can be inserted into the base 100 until being locked by the locking mechanism in the state that the force-receiving member 3 is located at the second position, so that even if the force-receiving member 3 is located at the second position, a user can install the filter element assembly 200 on the base 100 without changing the state of the force-receiving member 3, thereby facilitating the operation of the user.

The force receiving member 3 is provided with a pushing portion 50. During the movement of the force-receiving member 3 from the first position to the second position, the pushing portion 50 can push the unlocking member 40 to perform an unlocking action, thereby unlocking the locking mechanism. In this embodiment, the pushing part 50 pushes the unlocking member 40 to move along the length direction of the filter cartridge assembly 200 in the rotation from the first position to the second position, so that the unlocking member 40 moves toward the base 100, is inserted into the locking mechanism, and unlocks the locking mechanism.

Specifically, the unlocking member 40 is provided with a receiving surface 61 which is matched with the pushing member 50. The receiving surface 61 may be a flat surface. The pushing portion 50 pushes the unlocking member 40 by engaging with the receiving surface 61. The receiving surface 61 is located at an end of the unlocking member 40 remote from the base 100.

When the pushing portion 50 moves from the first position to the second position, it contacts the receiving surface 61, and pushes the unlocking member 40 to unlock the locking mechanism. Wherein, in order to avoid the interference between the force-receiving member 3 and the unlocking member 40 or excessive interference when the force-receiving member 3 is in the second position, at least a part of the pushing part 50 can move from one side of the receiving surface 61 to the other side of the receiving surface 61 when the filter element assembly 200 is inserted into the base 100.

As shown in fig. 19 and 20. When the force-bearing member 3 is located at the second position, at least a portion of the pushing part 50 can extend between the unlocking member 40 and the filter element assembly 200 when the filter element assembly 200 is inserted into the base 100. At least a portion of the push 50 extends between the unlocking member 40 and the filter element assembly 200, allowing the push 50 to radially expand the unlocking member 40 as it moves.

In order to ensure the contact force between the pushing part 50 and the receiving surface 61, the locking mechanism can be unlocked smoothly, and the filter element assembly 200 can be conveniently unloaded from the base 100. When the force-receiving member 3 is rotated from the second position to the first position, part of the pushing part 50 can be moved out from between the unlocking member 40 and the filter element assembly 200. When the force-receiving member 3 is located at the first position, the pushing portion 50 may be located entirely above the receiving surface 61 and not in contact with the receiving surface 61.

When the force-receiving member 3 is located at the first position, the pushing portion 50 is located outside the unlocking member 40. The pushing portion 50 does not contact the receiving surface 61. When the force receiving member 3 moves from the first position to the second position, the pushing portion 50 gradually contacts the receiving surface 61, and gradually pushes the unlocking member 40 toward the base 100, thereby unlocking the locking mechanism.

As shown in fig. 17 and 18. When the force receiving member 3 is in a state of not being inserted into the base 100 and is located at the second position, the end 51 of the push part 50 may be inserted between the unlocking member 40 and the filter element assembly 200, and the unlocking member 40 does not form an obstacle to the movement of the push part 50. Thus, the user can operate the filter element assembly 200 with the force-receiving member 3 in the second position, which is convenient for the user to operate, until the filter element assembly 200 is completely installed on the base 100, without the user having to change the filter element assembly 200 from the second position to the first position during the installation process. Then, the user can force the force-receiving member 3 to move from the second position to the first position, so that the pushing part 50 is moved out from between the unlocking member 40 and the filter element assembly 200, thereby facilitating the subsequent detachment and extraction of the filter element assembly 200 from the base 100.

When the user needs to take out the filter element assembly 200, the force-bearing assembly is forced from the first position to the second position, and the pushing part 50 is contacted with the bearing surface 61. As the force receiving assembly approaches the second position, the pushing portion 50 pushes the unlocking member 40 toward the base 100 through the receiving surface 61 until the locking mechanism is unlocked. Finally, the user pulls the filter element assembly 200 out of the base 100 by the force-bearing member 3 located at the second position to complete the disassembly of the filter element assembly 200.

Please continue to refer to fig. 17-25. In this embodiment, the cartridge component replacement structure may further include a cut-in structure. The cut-in structure is used for enabling the pushing part 50 to cut into contact with the bearing surface 61 when the force-bearing part 3 rotates from the first position to the second position. Through the cut-in structure, the situation that the pushing part 50 enters the space between the unlocking part 40 and the filter element assembly 200 again and cannot contact with the bearing surface 61 when rotating to the second position can be avoided, and the successful unlocking is ensured.

Specifically, the incising structure may include a blocking wall 62 disposed at an end of the unlocking member 40 away from the base 100. The receiving surface 61 is located outside the blocking wall 62. One end of the blocking wall 62 in the circumferential direction is a cut-in end 63 having an outer diameter not exceeding the inner diameter of the pushing portion 50. When the force-receiving member 3 is located at the first position, the pushing portion 50 is located at a side of the blocking wall 62 away from the base 100. When the reader faces fig. 17 and 18, the pushing portion 50 is located above the blocking wall 62.

When the force receiving element 3 rotates from the second position to the second position, the pushing portion 50 first contacts the cut-in end 63, and one end of the blocking wall 62 in the circumferential direction is the cut-in end 63 with an outer diameter not exceeding the inner diameter of the pushing portion 50, so that the pushing portion 50 can cut in along the outer side of the cut-in end 63 and avoid cutting into the blocking wall 62. As the force receiving member 3 gradually approaches the second position, the pushing portion 50 gradually comes into abutting contact with the receiving surface 61, pushing the unlocking member 40.

As shown in fig. 25. The receiving surface 61 and the blocking wall 62 form a stepped structure. The receiving surface 61 is located outside the blocking wall 62 and extends in the same direction as the blocking wall 62. The stop wall 62 may extend the same length as the receiving surface 61. The receiving surface 61 may be a substantially arc-shaped surface, and correspondingly, the blocking wall 62 may also be a substantially arc-shaped structure.

As shown in fig. 25. The blocking wall 62 also has a spacer 64. At least a portion of the pushing member 50 can extend between the spacer 64 and the filter element assembly 200. The inner diameter of the cutting end 63 gradually increases as it extends toward the spacer 64. The clearance distance between the spacer 64 and the filter element assembly 200 is greater than the clearance distance between the cut-in end 63 and the filter element assembly 200 so that the push 50, when in the second position, can be inserted between the spacer 64 and the filter element assembly 200 when moving toward the base 100.

In this embodiment, the force-receiving member 3 comprises a handle rotatably mounted on the filter element assembly 200. The handle may be a semi-circular handle for convenient gripping by a user. The handle is gradually erected when rotating from the first position to the second position. The pushing portions 50 are provided at both ends of the handle, respectively. The cylinder 41 is provided with two corresponding receiving surfaces 61 and a blocking wall 62.

The pushing portion 50 includes a pushing surface 8 provided on the force receiving member 3 to rotate about a rotation axis. The pushing surface 8 is a curved surface, specifically an arc surface, so that when the pushing portion 50 rotates around the pivot shaft 9, the pushing surface 8 can push the unlocking member 40 to move toward the base 100.

When the rotating member rotates from the first position to the second position, the distance between the contact portion of the pushing surface 8 and the receiving surface 61 and the rotation axis gradually increases. In order to facilitate the insertion of the pushing part 50 into the inside of the spacer part 64, the outer diameter of the end part 51 of the pushing part 50 is smaller than the outer diameter of the other parts. As shown in fig. 21, the end 51 of the pushing portion 50 is smaller in thickness. Of course, the end 51 of the pushing part 50 may be an inside buckle structure bent toward the inside in other embodiments. In this way, when the filter element assembly 200 is installed, the end 51 of the pushing part 50 is inserted into the spacer 64, and the filter element assembly 200 is pushed toward the base 100.

The filter element assembly 200 is convenient for a user to install in view of preventing the unlocking member 40 from excessively interfering with the pushing part 50 during the installation and disassembly of the filter element assembly 200. The unlocking member 40 is provided with a resilient structure at an end thereof remote from the base 100. One end of the elastic structure close to the force-bearing part 3 can elastically act along the radial direction. The bearing surface 61 and the cut-in structure are arranged at one end of the elastic structure close to the force-bearing part 3.

Through this elastic construction, pushing part 50 when inserting between filter element subassembly 200 and the elastic construction, along with pushing part 50 male part is longer, the elastic construction can expand along radial outside to be convenient for pushing part 50's insertion avoids blockking pushing part 50 formation, and convenience of customers puts filter element subassembly 200 in place with the installation. When the filter element assembly 200 is disassembled, the pushing part 50 moves to the second position, and the pushing part 50 is gradually cut above the receiving surface 61 (the side far from the base 100) through the cutting end 63. At this time, the elastic structure can contract inward in the radial direction, so that the pushing part 50 can smoothly contact with the receiving surface 61 in a matching manner, and the unlocking part 40 is gradually pushed to open the locking mechanism.

The unlocking member 40 includes a cylinder 41 (refer to the structure of the cylinder 41 in the above embodiment) installed on the base 100 and capable of being sleeved outside the filter element assembly 200. The resilient structure includes a catch plate 60 disposed on the barrel 41. In order to correspond to the two pushing portions 50 on the semicircular handle, two corresponding clamping plates 60 are arranged on the cylinder body 41.

A gap 45 is provided between the two sides of the clamping plate 60 along the circumferential direction and the cylinder 41. To avoid interference with the rotation of the pushing part 50 around the pivot shaft 9, an end of the interval gap 45 away from the base 100 has an opening. The opening portion gradually decreases in circumferential width as it extends toward the base 100. Wherein the clamping plate 60 can be fixedly connected to an end of the cylinder 41 away from the base 100. Preferably, the clamping plate 60 and the cylinder 41 are integrally formed.

To have a better elastic return capability and to provide a corresponding receiving surface 61. At least a portion of the catch plate 60 has a thickness greater than the wall thickness of the barrel 41. Further, the card 60 is provided with a connecting portion close to the base 100 and a carrying portion far from the base 100. The width of the connecting part along the circumferential direction is smaller than that of the bearing part along the circumferential direction. Wherein, the bearing surface 61 and the blocking wall 62 are positioned at the upper end of the bearing part.

In this embodiment, the filter element assembly replacement structure may further be provided with a guide structure. The guide structure is used to align the pushing part 50 with the spacing part 64 along the direction of the filter element assembly 200. By providing a guide structure, the user is not required to align the pushing portion 50 with the spacing portion 64 of the card 60 when installing the filter element assembly 200, which facilitates the user's operation.

To facilitate guiding the filter element assembly 200, a guide protrusion 201 is provided on a side wall of the filter element assembly 200. The guide protrusion 201 is preferably a cylindrical protrusion, although other structures are not limited in this application. The number of the guide projections 201 is preferably one

The guiding structure includes a guiding surface 42 disposed on the inner wall of the cylinder 41 and a guiding through hole 43 penetrating the cylinder wall of the cylinder 41. The guide surface 42 extends spirally from an end away from the base 100 to an end close to the base 100. One end of the guide surface 42 close to the base 100 opens into the guide through hole 43. The guide surface 42 is adapted to receive the guide protrusion 201 to guide the guide protrusion 201 into the guide through hole 43. The guide through-hole 43 extends along the length direction of the filter element assembly 200.

The lower end (end near the base 100) of the guide surface 42 opens into the guide through hole 43. The guide through hole 43 has portions on both sides of the guide surface 42. The cylinder 41 may be provided with a viewing hole to see whether the guide projection 201 is placed on the guide surface 42. When the guide projection 201 is placed on the guide surface 42, the guide projection 201 moves along the guide surface 42 until entering the guide channel under the pushing force of the user. When the guide projection 201 enters the guide passage, the pushing portion 50 is aligned with the spacing portion 64. Continuing to push the cartridge assembly 200, the pushing member 50 will be inserted between the clamping plate 60 and the cartridge assembly 200 until the locking mechanism locks the insertion end 1 of the cartridge assembly 200 and the installation is complete.

To ensure that the guide projection 201 continues to move towards the base 100 after entering the guide channel, the filter element assembly 200 is installed. Along the length direction of the filter element assembly 200, the distance between the receiving surface 61 and the lower end of the guiding surface 42 (the end close to the base 100) is less than the distance between the pushing part 50 and the guiding protrusion 201 when the force-receiving part 3 is located at the second position.

At least one guide surface 42 is arranged on the inner wall of the cylinder 41, and the spiral extending angle of the guide surface 42 is integral multiple of 180 degrees. As shown in fig. 26, two guide surfaces 42 extending at an angle of 180 degrees are symmetrically provided on the inner wall of the cylinder 41. Therefore, the user does not need to pay attention to the position of the guide protrusion 201, and the user only needs to insert the filter element assembly 200 into the base 100, so that the operation of the user is very convenient. Of course, in other embodiments, the guiding surface 42 may also be a guiding surface 42 extending over an angle of 360 degrees.

It should be noted that, in the embodiment of the present application, the direction may be upward from the base 100 and downward from the base 100, and accordingly, the direction may be toward the base 100, and may also be considered as downward, and the "up and down" direction may correspond to the orientation of the reader facing to fig. 17 or fig. 19, but is not limited by the actual placement state.

Of course, the embodiments of the present application are not limited to the above embodiments. In other embodiments, at least a portion of the support surface 61 may also be movable outside the support surface 61 to a side of the support surface 61 adjacent to the base 100. In this embodiment, the pusher 50 may be allowed to press (also understood as radially compressing) the unlocking member 40 against the filter element assembly 200 as it moves. Accordingly, the cut-in structure is arranged in reverse to that of the embodiment shown in fig. 25, wherein the receiving surface 61 is located inside the blocking wall 62 and the spacer 64 has a smaller inner diameter with respect to the cut-in end 63.

Please refer to fig. 28 to fig. 31. In another embodiment, the force receiving member 3 is provided with a pushing portion 50 for pushing the unlocking member 40. The pushing portion 50 has a pushing position and a releasing position that are switchable. When the pushing part 50 is located at the releasing position, the force-receiving member 3 does not interfere with the unlocking member 40. When the pushing part 50 is located at the releasing position, the pushing part 50 can push the unlocking member 40 to open the locking mechanism.

Further, the filter element assembly 200 can be inserted into the base 100 until locked by the locking mechanism in a state where the force receiving member 3 is located at any position between the first position and the second position. Therefore, the filter element assembly 200 can be installed in place without paying attention to the position of the stress piece 3 by a user, and the installation by the user is convenient.

Further, the pushing portion 50 is not rotated together with the force receiving member 3 when located at the release position. The pushing portion 50 rotates together with the force receiving member 3 in the pushing position. When the force-receiving member 3 is located at the first position, the user can switch the pushing member 50 from the releasing position to the pushing position, and then force the pushing member 50 from the first position to the second position, thereby removing the filter element assembly 200 from the base 100.

In the present embodiment, the pushing portion 50 is switched between the pushing position and the releasing position by moving radially. Wherein the inner diameter of the push part 50 at the release position is larger than that at the push position. That is, the radial gap width between the push part 50 and the filter element assembly 200 when the push part 50 is in the release position is greater than the radial gap width between the push part 50 and the filter element assembly 200 when the push part 50 is in the push position. Thus, when the pushing part 50 is located at the releasing position when the filter element assembly 200 is inserted into the base 100, the insertion of the filter element assembly 200 into the base 100 is not affected by any position between the first position and the second position, regardless of whether the force receiving member 3 is located at the first position or the second position, until the filter element assembly is locked by the locking mechanism.

The pushing portions 50 are installed at both ends of the handle. Wherein the pushing part 50 is rotatably mounted on the pivot shaft 9. When the pushing part 50 is located at the pushing position, the force-receiving member 3 can drive the pushing part 50 to rotate around a rotation axis. The pushing portion 50 is movable along the rotational axis to switch between the pushing position and the releasing position.

In one possible embodiment, the pushing portion 50 has an inserting portion 54, the handle has an inserted portion 55 (e.g., a ring sleeve shown in fig. 30 and 31) sleeved on the pivot shaft 9, the inserted portion 55 may have an insertion hole, and the inserting portion 54 may be an insertion protrusion capable of being inserted into the insertion hole. When the pushing part 50 is located at the releasing position, the inserting part 54 moves outwards along the pivot shaft 9 and moves out of the inserting hole of the inserted part 55, so that the rotation linkage between the handle and the pushing part 50 cannot be realized, and the pushing part 50 does not rotate along with the handle. The pushing part 50 is pushed inwards along the radial direction, the inserting part 54 of the pushing part 50 is inserted into the inserted part 55, the handle and the pushing part 50 are linked, and the handle can drive the pushing part 50 to rotate. Thus, the handle is rotated from the first position to the second position, unlocking the locking mechanism, and removing the filter element assembly 200.

To simplify the user operation, the filter cartridge assembly replacing structure may be further provided with an elastic member 70 applying an elastic force to the push part 50 to move toward the release position. The elastic member 70 includes a spring sleeved on the pivot shaft 9. The elastic member 70 can ensure that the pushing part 50 is in the release position when the filter element assembly 200 is not required to be unlocked, and avoid the false unlocking of the filter element assembly 200.

See fig. 1-31. In an embodiment of the present invention, there is also provided a water purifier including: a filter cartridge assembly replacement arrangement as described in any one of the examples or embodiments above. Specifically, the water purifier may have a plurality of filter element assemblies 200 therein. The base 100 of the filter cartridge assembly replacement structure may form a water purifier housing, but the support cylinder 300 may be a part of the water purifier housing.

In other embodiments, the water purifier housing is provided with a plurality of bases 100, the plurality of bases 100 may be an integral structure, and each base 100 is correspondingly provided with one filter element assembly 200. A plurality of accommodating grooves are formed in the outer shell of the water purifier; each accommodating groove corresponds to the insertion hole 15 leading to one base 100. A plurality of filter element assemblies 200 may be installed in the receiving groove in a one-to-one correspondence and inserted into the corresponding base 100.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims

1. A filter element assembly replacement structure, comprising: a filter element assembly, a base for mounting the filter element assembly, a locking mechanism for locking the filter element assembly to the base, an unlocking member for unlocking the locking mechanism; wherein,

2. The filter element assembly replacing structure according to claim 1, wherein the force receiving member is provided with a pushing portion; the unlocking piece is provided with a bearing surface matched with the pushing part; the pushing part is contacted with the bearing surface when moving from the first position to the second position, so that the unlocking part is pushed to open the locking mechanism;

3. The filter element assembly replacement structure according to claim 2, wherein the force receiving member is in the second position, and at least a portion of the pushing portion is capable of extending between the unlocking member and the filter element assembly when the filter element assembly is inserted into the base.

4. The filter element assembly replacement structure according to claim 3, wherein a portion of the pushing portion is movable out of between the unlocking member and the filter element assembly when the force receiving member is rotated from the second position to the first position.

5. The filter element assembly replacement structure according to claim 3 or 4, further comprising a cut-in structure; the cutting-in structure is used for enabling the pushing part to cut into and contact with the bearing surface when the stress piece rotates from the first position to the second position.

6. The filter element assembly replacement structure according to claim 5, wherein the incised structure comprises a blocking wall disposed at an end of the unlocking member distal from the base; the bearing surface is positioned on the outer side of the barrier wall; one end of the blocking wall along the circumferential direction is a cut-in end of which the outer diameter does not exceed the inner diameter of the pushing part.

7. The filter element assembly replacement structure according to claim 6, wherein the barrier wall further has a spacer; at least part of the pushing part can extend into the space part and the filter element component; the inner diameter of the cutting end is gradually increased when the cutting end extends to the spacing part.

8. The filter element assembly replacement structure according to claim 5, wherein an end of the unlocking member remote from the base is provided with a resilient structure; one end of the elastic structure close to the stressed part can elastically act along the radial direction; the bearing surface and the cut-in structure are arranged at one end of the elastic structure close to the stress element.

9. The filter element assembly replacement structure according to claim 8, wherein the unlocking member comprises a cylinder mounted on the base and sleeved outside the filter element assembly; the elastic structure comprises a clamping plate arranged on the cylinder body; and a spacing gap is arranged between the two sides of the clamping plate along the circumferential direction and the cylinder body.

10. The filter element assembly replacement structure according to claim 9, wherein the card plate and the barrel are integrally formed.

11. The filter element assembly replacement structure according to claim 9, wherein at least a portion of the chuck plate has a thickness greater than a wall thickness of the barrel.

12. The filter element assembly replacement structure according to claim 9, wherein the card is provided with a connecting portion close to the base and a carrying portion remote from the base; the width of the connecting part along the circumferential direction is smaller than that of the bearing part along the circumferential direction.

13. The filter element assembly replacement structure according to any one of claims 9 to 12, wherein the force receiving member comprises a handle rotatably mounted to the filter element assembly; the handle is gradually erected when being rotated from the first position to the second position;

14. The filter element assembly replacement structure according to claim 5, wherein the pushing portion includes a pushing surface provided on the force receiving member to rotate about a rotation axis; when the rotating member rotates from the first position to the second position, the distance between the contact part of the pushing surface and the receiving surface and the rotating axis gradually increases.

15. The filter element assembly replacement structure according to claim 14, wherein at least a portion of the pushing portion has a radial thickness that gradually decreases in a direction away from the axis of rotation.

16. The filter element assembly replacement structure according to claim 9, further comprising a guide structure; the guide structure is used for aligning the pushing part and the spacing part along the direction of the filter element assembly.

17. The filter element assembly replacing structure according to claim 16, wherein a guide projection is provided on a side wall of the filter element assembly;

18. The filter element assembly replacing structure according to claim 17, wherein a distance between the receiving surface and a lower end of the guide surface in a length direction of the filter element assembly is smaller than a distance between the pushing portion and the guide protrusion in a state where the force receiving member is located at the second position.

19. The filter element assembly replacement structure according to claim 17, wherein the inner wall of the cylinder is provided with at least one of the guide surfaces, and the guide surface extends spirally at an angle that is an integral multiple of 180 degrees.

20. The filter element assembly replacing structure according to claim 2, wherein the force receiving member is provided with a pushing portion for pushing the unlocking member; the pushing part is provided with a pushing position and a releasing position which can be switched; when the pushing part is positioned at the releasing position, the stress piece does not interfere with the unlocking piece; when the pushing part is located at the pushing position, the pushing part can push the unlocking piece to open the locking mechanism.

21. The filter element assembly replacement structure according to claim 20, wherein the force receiving member is capable of driving the pushing portion to rotate about an axis of rotation; the pushing portion is movable along the rotation axis to switch between the pushing position and the releasing position.

22. The filter element assembly replacing structure according to claim 21, wherein an elastic member is further provided to apply an elastic force to the urging portion to move toward the release position.

23. The filter element assembly replacement structure according to claim 1, wherein the filter element assembly is insertable into the base until locked by the locking mechanism when the force-receiving member is in any position between the first position and the second position.

24. A water purifier, characterized by comprising: the filter element assembly replacement structure according to any one of claims 1 to 23.