TWI547775B - A transmission member and a photosensitive drum unit having the transmission member - Google Patents

Description

Transmission member and photosensitive drum unit having the transmission member

The present invention relates to a photosensitive drum mounted on an electronic image forming apparatus such as a printer or a photocopier, and more particularly to a transmission member for a photosensitive drum and a photosensitive drum unit having the same.

The prior art content described herein is used to provide an overview of the context of the present disclosure, and the subject matter discussed in the previous section of the invention section should not be merely assumed to be prior art, as is the problem raised by the prior art of the inventive section. Or the subject matter of the prior art content of the invention section should not be assumed to have been disclosed in the prior art. The subject matter of the prior art of this section of the invention represents only a different method, which may also include the invention itself. The inventor's work described in the prior art or the embodiments should not be explicitly or metaphorically used as a prior art for the invention, nor is it a prior art at the time of application.

One of the most important components in the photosensitive drum electronic imaging device is disposed in a toner cartridge, which is electrically conductive by photoreceptive action and simultaneously adsorbs carbon powder to display a document, and a photosensitive drum mainly comprises a photosensitive roller and a photosensitive drum. a transmission assembly disposed at one end of the photosensitive drum, the transmission assembly being coupled to a driving member disposed in a housing of the electronic imaging device to transmit rotational kinetic energy from the driving member to the photosensitive roller.

The transmission assembly of the conventional photosensitive drum includes a transmission member that can be engaged with the driving member, and is generally designed to be biased by the driving member to be biased (as disclosed in US Pat. No. 8,295,734), or The design of the transmission member can be axially moved by the driving member (as disclosed in the Chinese patent CN201532527U). Through these design methods, the transmission member can be placed when the user places the toner cartridge in the electronic imaging device. The driving member is engaged with the driving member and separated from the driving member when the user removes the toner cartridge from the electronic imaging device.

However, the above-described transmission assembly for a photosensitive drum and having a transmission member that can be yawed or axially moved is relatively complicated in construction and assembly because of its complicated construction.

Therefore, there are still defects and deficiencies in the prior art to be solved.

In view of the above circumstances, an object of the present invention is to provide a transmission member for a photosensitive drum which can be combined and separated from a driving member of an electronic imaging device in a manner different from the prior art, and has a simpler structure. Another object of the present invention is to provide a transmission member for a photosensitive drum which can be firmly coupled with a driving member of an electronic image forming apparatus and smoothly separated. Another object of the present invention is to provide a photosensitive drum unit which can be firmly coupled with a driving member of an electronic image forming apparatus and smoothly separated from the driving member.

In order to achieve the above object, the photosensitive drum unit (transmission member) provided by the present invention is for engaging with a driving member of an electronic imaging device, and the driving member has two protrusions.

In one aspect of the invention, the photosensitive drum unit comprises a photosensitive drum having a drum shaft L, a casing detachably coupled to the photosensitive drum and coaxial with the drum shaft L, and a sleeve disposed on the casing And coaxial with the drum shaft L, and a transmission member is disposed on the sleeve and coaxial with the drum shaft L. In one embodiment, the sleeve is integrally formed with the housing and coaxial with the drum shaft L.

The transmission member includes a shaft and at least two engaging blocks, the shaft is rotatable relative to the sleeve about the drum axis L, and is movable relative to the sleeve along the drum axis L, one end of the shaft Has a base. The at least two latching blocks extend from opposite sides of the base portion away from the drum axis L, wherein the opposite sides of the base portion respectively have a pivot axis, and each of the latching blocks can respectively surround the two pivots The rotating shaft rotates, and the pivoting shaft is perpendicular to the drum shaft L.

In one embodiment, the base has at least two receiving slots provided on opposite sides of the base, wherein each of the latching blocks is pivotally received in each of the receiving slots, so that the cards are The block is rotatable about the pivot axis.

In one embodiment, each of the latching blocks has a bottom portion, a latching claw extending upwardly from the bottom portion, and a through hole corresponding to the position of the pivoting shaft when assembled. In one embodiment, each of the snap blocks is pivotally coupled to the base by a pin inserted into the through hole.

In one embodiment, the shaft comprises a first component and a second component, each component comprising a semi-cylindrical body, and a portion of the base is disposed at one end of the semi-cylindrical body, the first component and the first component The two halves of the second part of the cylindrical system are detachably joined to each other.

In one embodiment, each of the semi-cylindrical bodies has at least one protrusion protruding from a plane of each of the semi-cylindrical bodies, and at least one groove is recessed by a plane of the semi-cylindrical body. . In the assembled state, at least one protrusion of the semi-cylindrical body of the first component is received in at least one groove of the semi-cylindrical body of the second component, and the semi-cylindrical body of the second component At least one of the bumps is received in at least one recess of the semi-cylindrical body of the first component.

In one embodiment, each of the portions of the base has two protrusions extending toward the at least two receiving slots, such that the positions of the protrusions coincide with the position of the pivot shaft when assembled. In an embodiment, each of the latching blocks has a bottom portion, a latching claw extending upwardly from the bottom portion, and two through holes on opposite sides, so that the two protruding pillars of the portion of the base portion are assembled in each The card is connected to the second of the block.

In one embodiment, each of the portions of the base has two perforations facing the at least two receiving slots, such that the perforations correspond to the position of the pivot axis when assembled. In an embodiment, each of the latching blocks has a bottom portion, a latching claw extends upwardly from the bottom portion, and two oppositely protruding protrusions, so that the two protruding pillars of the latching block are assembled during assembly. Placed in the corresponding perforations of the base of the portion.

In another aspect, the invention relates to a transmission member for snapping onto a photosensitive drum having a drum shaft L to which a sleeve is coaxially coupled. In one embodiment, the transmission member includes a shaft and at least two engaging blocks, the shaft is rotatable relative to the sleeve about the drum axis L, and is movable relative to the sleeve along the drum axis L. One end of the shaft has a base; the at least two engaging blocks extend from two opposite sides of the base away from the drum axis L, wherein the opposite sides of the base respectively have a pivot axis, and each of the two The snap blocks are rotatable about the two pivot axes, respectively, the pivot axis being perpendicular to the drum axis L.

In one embodiment, the base has at least two receiving slots provided on opposite sides of the base, wherein each of the latching blocks is pivotally received in each of the receiving slots, so that the cards are The block is rotatable about the pivot axis.

In one embodiment, each of the latching blocks has a bottom portion, a latching claw extending upwardly from the bottom portion, and a through hole corresponding to the position of the pivoting shaft when assembled. In one embodiment, each of the snap blocks is pivotally coupled to the base by a pin inserted into the through hole.

In one embodiment, the shaft comprises a first component and a second component, each component comprising a semi-cylindrical body, and a portion of the base is disposed at one end of the semi-cylindrical body, the first component and the first component The two halves of the second part of the cylindrical system are detachably joined to each other.

In one embodiment, each of the semi-cylindrical bodies has at least one protrusion protruding from a plane of each of the semi-cylindrical bodies, and at least one groove is recessed by a plane of the semi-cylindrical body. . In the assembled state, at least one protrusion of the semi-cylindrical body of the first component is received in at least one groove of the semi-cylindrical body of the second component, and the semi-cylindrical body of the second component At least one of the bumps is received in at least one recess of the semi-cylindrical body of the first component.

In one embodiment, each of the portions of the base has two protrusions extending toward the at least two receiving slots, such that the positions of the protrusions coincide with the position of the pivot shaft when assembled. In an embodiment, each of the latching blocks has a bottom portion, a latching claw extending upwardly from the bottom portion, and two through holes on opposite sides, so that the two protruding pillars of the portion of the base portion are assembled in each The card is connected to the second of the block.

In one embodiment, each of the portions of the base has two perforations facing the at least two receiving slots, such that the perforations correspond to the position of the pivot axis when assembled. In an embodiment, each of the latching blocks has a bottom portion, a latching claw extends upwardly from the bottom portion, and two oppositely protruding protrusions, so that the two protruding pillars of the latching block are assembled during assembly. Placed in the corresponding perforations of the base of the portion.

Therefore, the transmission member for the photosensitive drum provided by the present invention is simpler in structure than the prior art, and the two-clamping block can be engaged with the two protrusions of the driving member of the electronic imaging device, thereby The transmission member is driven to rotate. In addition, when the user wants to combine and disengage the transmission member with the driving member of the electronic imaging device, the snap-fit structure is pushed by the driving member of the electronic imaging device, so that the transmission member can move axially along the sleeve. At the same time, the protrusion of the shaft is guided by the guide grooves of the sleeve to rotate the transmission member, so that the transmission member can be moved and rotated simultaneously with the electronic imaging device. The drive members are firmly joined and smoothly separated.

The above and other aspects of the present invention will be described in detail in the following description of the embodiments of the invention.

The present invention will be described in more detail in the following description in conjunction with the accompanying drawings. Those skilled in the art will be able to fully understand the invention, and like reference numerals refer to like elements throughout the specification.

The names used in the present specification and the description of the invention generally have the ordinary meaning in the art, and the description of the present invention will be described below or in the description to further guide the present invention. For convenience, some names may be marked in italics and/or quotation marks. The use of marks and/or uppercase letters has no effect on the scope and meaning of the name, ie the name in this specification and the invention, whether or not Marked and/or uppercase letters have no effect on the scope and meaning of the name. The same thing can be described in a variety of ways rather than just one. Therefore, any of the names discussed here can use alternative languages and synonyms, regardless of the name. Whether it is stated or discussed herein is not given any special meaning, some names have synonyms, and the enumeration of one or more synonyms does not mean that the use of other synonyms can be excluded. In this specification, the use and discussion of the embodiments The scope and meaning of the names of the invention or examples are not to be construed as limiting.

When an element is referred to as being "on" another element, it can be interpreted as "directly on" or "in" or " When it is "on", it does not have the meaning in the component. As used in this specification, the name "and/or" includes one or more of any combination of names that are associated.

It should be understood that even though the first, second, third, etc., etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers, and/or Sections are not limited by the names, and are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section and, therefore, are discussed in the following description. A first component, component, region, layer or section may be referred to as a second component, component, region, layer or section without departing from the teachings of the invention.

It should be understood that when a relationship of one element to another element is referred to as "above", "attached" to, "connected" to, "coupled" to, "contact", etc. It is meant that the element can be "directly on", "attached" to, "connected" to, "coupled" to, "contacted" another element or intervening element. In contrast, when the relationship of one element to another element is described as "directly on," "directly attached", "directly connected", "directly connected", or "directly contact", The intervening elements are not present, and when a structure or feature is "adjacent" to another feature, it is meant that the two may be partially overlapping or underneath.

The singular forms "a", "an" and "the" are intended to include the plural, unless the context clearly dictates otherwise. It is understood that the words "including" and/or "comprising", "including" and/or "including", "having" and/or "having" are used in the specification to specify the recited features, regions, and overall. The existence, or addition, of one or more of the features, regions, integers, steps, operations, components, components, and/or groups may not be excluded in the presence of the steps, operations, components, and/or components.

In addition, other relative names such as "lower", "bottom", "above", "top" are used herein to describe the relationship of one element to another element in the drawings. It is understood that these related terms are also It can be used to indicate the position and orientation of elements not represented in the drawings. For example, when a component in a drawing is flipped, the description of the component will change from "below" to "above" other components. The name "below" can mean both the lower and upper meanings according to the definition of the schema. Similarly, when the components in a diagram are flipped, the description of the component will be "below" other components or in other components. The following "becomes "above" other components. The names of the previous examples "below" or "below" can represent both the above and the following meanings.

All names (including technical and scientific names) used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined, and even some commonly used dictionary-defined names should be in the related art and the present invention. The meanings are consistent and these names should not be interpreted as too ideal or too formal unless explicitly stated in the specification.

"Left and right", "about", "substantially" or "probably" generally means within 20% of a given value or range, preferably within 10% or even within 5%. The numerical values provided by the present invention are a rough value, and unless otherwise specified, mean "left and right", "about", "substantially" or "presumably".

The words "including", "including", "having", "having", "including" or "including" are used in the context of an open term, meaning including but not limited to.

In this document, "at least one of A, B, and C" should be interpreted as a logic (A or B or C) because "or" is a non-exclusive logic without changing the principles of the invention. One or more steps or licenses in a method are implemented in a different order or simultaneously.

The embodiments of the present invention will be described in conjunction with the drawings, and in accordance with the purpose of the present invention, as in the embodiments and broadly described herein, the present invention is related to the photosensitive drums of electronic imaging devices such as printers and photocopiers. In relation to the drum unit, the drum unit has a transmission assembly.

1 is a perspective view of a photosensitive drum unit (transmission member) according to an embodiment of the present invention, the photosensitive drum unit including a photosensitive drum 10 having a drum shaft L, and a transmission assembly 1 detachably coupled to the photosensitive drum 10 Connected together and coaxial with the drum shaft L. The transmission assembly 1 is configured to receive a rotational driving force from a driving device of an electronic imaging device and transmit the rotational driving force to the photosensitive drum 10, and the photosensitive drum 10 can be reversible under the action of the rotational driving force Its drum axis L rotates.

In the embodiment, the transmission assembly 1 includes a housing 60 detachably coupled to one end of the photosensitive drum 10 and coaxial with the drum shaft L. A sleeve 30 is disposed on the housing 60 and coupled to the drum. The shaft L is coaxial, and a transmission member 20 is disposed on the sleeve 30 and coaxial with the drum shaft L. In one embodiment, the sleeve 30 is integrally formed with the housing 60 and coaxial with the drum shaft L. The transmission member 20 includes a shaft 70, a base portion 81, and at least two latching blocks 82. The shaft 70 is rotatable relative to the sleeve 30 about the drum shaft L and is movable along the sleeve 30. The drum shaft L is moved, and the base portion 81 is integrally extended from one end of the shaft 70. The at least two latching blocks 82 extend from two opposite sides of the base portion 81 away from the drum axis L, wherein The opposite sides of the base 81 have a pivot axis, respectively, and each of the snap blocks 82 is rotatable about the two pivot axes, the pivot axis being perpendicular to the drum axis L.

Other embodiments of the transmission assembly of the present invention are detailed below.

Referring to FIG. 2A, a transmission assembly 100 for a photosensitive drum unit according to an embodiment of the present invention includes a transmission member 20, a sleeve 30, an elastic member 50, and a gear member (housing) ) 60. FIG. 2B is a transmission assembly 200 of a photosensitive drum unit according to another embodiment, which is substantially the same as the transmission assembly 100 shown in FIG. 2A except the elastic holding member 89 of the transmission assembly 100 and the transmission assembly 200. The elastic holder 89' is different.

As shown in FIG. 2A, FIG. 2B and FIG. 4-10, the transmission member 20 has a shaft 70 and a snap-fit structure 80 having a cylindrical rod 74 and at least one bump. 75 extending radially along the rod body 74, the rod body 74 is an elongated member extending along the drum shaft L, and has a first end 71 facing a first direction D1 and a second end 72 a second direction D2 opposite to the first direction D1, and a jack 73 extending radially through the rod 74. In an embodiment, a pin 40 is inserted into the jack 73 during assembly, the pin 40 The portion protruding from the insertion hole 73 is the bump 75.

The latching structure 80 has a base portion 81 integrally extending from the first end 71 of the shaft 70, and a receiving slot 811 formed on the base portion 81. The base portion 81 has two pairs of holes 812 and the receiving portion The missing slot 811 is connected.

As shown in FIGS. 4 and 7, the receiving recess 811 has two openings 811a symmetrically located on opposite sides of the base 81, and two grooves 811b are recessed in the base 81 and the first end of the shaft 70. And communicating with the two openings 811a respectively. As shown in FIG. 7, each of the grooves 811b has a width N1, and each of the openings 811a has a width N2, and the width N1 of each of the grooves 811b is narrower than the openings. The width of 811a is N2. In an embodiment, as shown in FIG. 7, the receiving slot 811 has a plurality of blocking portions 818 to prevent a snap block 82 from excessively rotating toward the drum shaft L. Further, the two slots 811b are connectable. A groove is formed, in which case the base 81 is divided into two partial base portions 81a and 81b as shown in Fig. 4.

The latching structure 80 also includes two latching blocks 82. In this embodiment, the two latching blocks 82 are L-shaped, and other types of latching blocks can also be used to implement the present invention; each of the latching blocks 82 There is a bottom portion 829 and a latching claw 820. The bottom portion 829 has a first end portion 829a and an opposite second end portion 829b. The first end portion 829a defines a hook portion 826. The second end portion 829b of the bottom portion 829 extends upwardly (or vertically), and the two latching blocks 82 are pivotally received on opposite sides of the receiving slot 811, so that the engaging blocks are respectively 82 is rotatable about a pivot axis located at a second end 829b of the bottom portion 829, the pivot axis being perpendicular to the drum axis L. In the normal state, the first end portion 829a of the bottom portion 829 is oriented toward the drum axis L. The splicing claws 820 extend in a spiral direction toward the first direction D1. The two latching blocks 82 have an accommodating space 86 for accommodating a driving member (driving device) of the electronic imaging device.

As shown in FIGS. 5 and 8, each of the engaging blocks 82 has an outer side 825 that gradually approaches the drum axis L in the first direction D1, and an inner side 824 faces the receiving space 86 and an inclined top surface 822. A junction of the outer side 825 and the inner side 824, a hook slot 823 is located at another boundary of the outer side 825 and the inner side 824, and a top end 821 is located at the inclined top surface 822 and the hook slot Between 823, the angle between the extending direction of the inclined top surface 822 and the drum axis L is about 30 to 80 degrees, and the opening of the hooking slot 823 of the two latching blocks 82 are substantially opposite to each other for the electronic imaging. The two protrusions 92 of the driving member of the device extend into the hook slots 823 through the openings of the hook slots 823. Each of the hooking slots 823 has an arcuate recess 823a and a limiting surface 823b between the recess 823a and the top end 821. The limiting surface 823b is substantially inclined from the top end 821 toward the inclined top surface 822. The hooking slots 823 of the two latching blocks 82 are substantially opposite to each other.

As shown in FIGS. 5 and 8, the first end portion 829a and the second end portion 829b of the bottom portion 829 of each of the latching blocks 82 have a first width W1 and a second width W2, respectively. Narrower than the second width W2.

In other embodiments, the hook portion 826 of each of the latching blocks 82 is a T-shaped hook. Further, each of the latching blocks 82 also has a through hole 827 at the second end portion 829b of the bottom portion 829. As shown in Fig. 8, the perforation 827 corresponds to the position of the pivot shaft.

In addition, each of the latching blocks 82 has a rotation limiting end 828 located at the second end 829b of the bottom portion 829 and facing the first end portion 829a of the bottom portion 829. In an embodiment, as shown in FIG. 5, The rotation limiting end 828 extends from one side of the second end 829b of the bottom portion 829 to the other side, and the rotation limiting end 828 has a width W2 that is the same as the second end portion 829b of the bottom portion 829. In another embodiment, as shown in FIG. 8, the rotation limiting end 828' extends from the middle of the second end portion 829b of the bottom portion 829, and the rotation limiting end 828' has a The width W1 is substantially the same as the first end portion 829a of the bottom portion 829 and narrower than the width W2 of the second end portion 829b of the bottom portion 829.

In addition, the latching structure 80 also includes a retaining member 89 that overlaps with the hook portion 826 of the bottom portion 829 of each of the latching blocks 82. The retaining member 89 can be an elastic ring, a magnet or a spring, in this embodiment. As shown in FIG. 3A, the holding member is an elastic ring 89. The elastic ring 89 can be made of an elastic material such as plastic or silicone. In this embodiment, the two snap blocks 82 are The hook portion 826 of the bottom portion 829 is overlapped with the elastic ring 89. In another embodiment, as shown in FIG. 3B, the elastic ring 89' has two earrings 891 on opposite sides of the elastic ring 89', whereby the hooks of the bottom 829 of the two snap blocks 82 are The 826 is lapped with the two earrings 891 of the elastic ring 89'. In addition to this, a spring can also be used to connect the hook portion 826 of the bottom portion 829 of the two snap block 82. In addition, the magnetic force can also be used to maintain the two snap block 82 in a normal state.

According to the present invention, the assembly process of the transmission member 20 is relatively simple. As shown in FIGS. 6, 9, and 10, the two latching blocks 82 are received in the receiving slot 811 and are coupled to the latching member 83. The bases 81 are pivotally connected to each other. For example, the latching blocks 82 are respectively received in the corresponding openings 811a and 811b, and the two latches 83 are respectively inserted into the through holes 827 of the latching blocks 82 and Each pair of holes 812 of the base portion 81 is pivotally connected to the base portion 81. Then, the retaining member 89 (elastic ring) overlaps and hooks the hook portion 826 of the two latching blocks 82. As shown in Figure 6. In addition, as shown in FIGS. 9 and 10, first, the shaft 70 is inserted into the elastic ring 89' so that the two earrings 891 are located in the two grooves 811b, and then the respective engaging blocks 82 are respectively placed in corresponding positions. The opening 811a and the groove 811b, the hook portion 826 of the two latching block 82 is inserted into the two earrings 891 of the elastic ring 89', and the two latches 83 are respectively inserted into the through holes 827 of each of the engaging blocks 82 and the Corresponding holes 812 of the base portion 81 allow the respective snap blocks 82 to be pivotally coupled to the base portion 81.

Thereby, the second end portion 829b of the bottom portion 829 of each of the latching blocks 82 is received in each of the openings 811a, and the first end portion 829a of the bottom portion 829 of each of the latching blocks 82 is received in each of the grooves. 811b, and each of the latching blocks 82 is rotatable about its pivot axis, that is, each of the latching blocks 82 is rotatable about a latch 83 corresponding to the pivot axis. The latching blocks 82 are respectively spirally extended from opposite sides of the base portion 81 such that the positions of the latching blocks 82 are located above and below the base portion 81, as shown in FIG. 2A and FIG. 2B. The latching block 82 faces the first direction D1 and away from the drum shaft L. The tension of the elastic ring 89 (or 89') acting on the hook portion 826 of the two latching blocks 82 causes the snaps to be engaged. Block 82 can remain in a normal state.

In addition, the transmission assembly having a transmission member 20 further includes a sleeve 30, a gear member 60 and an elastic member 50.

Please refer to FIG. 2A, FIG. 2B, and FIGS. 11 and 12, in particular, in FIGS. 11 and 12, the sleeve 30 has a body 32 and a shaft hole 322 extending through the body 32 and the two guiding grooves along the drum axis L. 324 is formed on the body 32 and communicates with the shaft hole 322, and the two protrusions 34 are protruded from the body 32. Only one guide groove 324 is present in the drawing, and the other guide groove is located in the guide groove 324 in the drawing. relative position.

As shown in FIG. 11 , each of the guiding grooves 324 has a rectangular shape and has a bottom edge substantially perpendicular to the drum axis L, and two side edges respectively extend from the two ends of the bottom edge toward the first direction D1, and a a top edge is connected between the two sides and parallel to the bottom edge. As shown in FIG. 12, the top edge has an inclined portion and an extending portion parallel to the bottom edge. It should be understood that the present technology Other types of sleeves can also be used to practice the invention by those skilled in the art.

According to the present invention, the shaft 70 of the transmission member 20 is disposed in the shaft hole 322 after assembly, and the shaft 70 is rotatable relative to the sleeve 30 about the drum shaft L and is movable along the sleeve 30. The drum shaft L moves, and the insertion hole 73 of the transmission member 20 is inserted into the insertion pin 40, so that the shaft 70 of the transmission member 20 has two protrusions 75 extending radially along the shaft 70, as shown in FIG. 2B. The two protrusions 75 are protruded from the two positions of the insertion hole 73, and are movably received in the guide grooves 324, respectively.

It can be appreciated by those skilled in the art that the insertion hole 73 of the transmission member 20 may not penetrate the shaft 70. For example, the shaft 70 of the transmission member 20 may have only one protrusion 75 and the sleeve. 30, it is only necessary to have a guide groove 324. In addition, the protrusion 75 of the shaft 70 is not limited to be formed by the bolt 40 penetrating the insertion hole 73. For example, the protrusion 75 can be integrally formed by the rod. The body 74 is convex. In this case, the guiding groove 324 should have an open end for the protruding block 75 to enter the guiding groove 324, and an annular cover is used to close the open end of the guiding groove 324. The annular cover can be closed. It is provided on, but not limited to, the shaft 70.

Referring to FIG. 2A, FIG. 2B, and FIG. 13, the gear member 60 is for connecting the photosensitive drum and has a top portion 66. A gear portion 67 is moved from the top portion 66 along the drum shaft L toward the second portion. The direction D2 extends, a bottom portion 68 extends from the gear portion 67 along the drum axis L toward the second direction D2, a top wall 64 is located on one side of the top portion 66, and a bottom wall 65 is located on one side of the bottom portion 68. In addition, the top portion 66 of the gear member 60 can have at least one groove 69. The peripheral structure of the gear member 60 is similar to that of the conventional one. The inner portion of the gear member 60 has a tubular body 61 extending along the drum shaft L. The body 32 of the sleeve 30 is received such that the sleeve 30 is coupled to the gear member 60 in such a manner that it cannot rotate about the drum shaft L. In other embodiments, the sleeve 30 is formed on the gear member. In item 60.

In other embodiments, the gear member 60 has a mounting groove formed on the top wall 64 and two limiting slots that communicate with each other. The tube body 61 extends along the drum axis L and is open to the top wall 64. The slot extends from the tube body 61 in opposite radial directions and opens to the top wall 64. The two limiting slots are adjacent to the mounting slot and extend parallel to the drum shaft L. The second limiting slot is not open to the top wall 64. The sleeve 30 further has two protrusions 34 protruding from the body 32. When assembled, the two protrusions 34 of the sleeve 30 are inserted into the tube body 61 through the mounting groove, and then the sleeve 30 can be The rotation of the two studs 34 into the limiting slot, the sleeve 30 is limited to the gear member 60. The details of the embodiments are disclosed in the TW103133602, TW102124445 and TW103123533 applications, which are not described herein.

The assembly of the transmission unit of the photosensitive drum unit of the present invention is relatively simple. As shown in Fig. 16A, first, the elastic member 50 is placed in the shaft hole 322 of the sleeve 30, and the shaft hole 322 of the sleeve 30 is connected. The tube body 61 of the gear member 60, and secondly, the shaft 70 of the transmission member 20 is inserted into the shaft hole 322 of the sleeve 30, as shown in Fig. 16B, and then the pin 40 is passed through the gear member 60. The groove 69 and the guiding groove 324 of the sleeve 30 penetrate into the insertion hole 73 of the shaft 70 of the transmission member 20, as shown in FIG. 16C, so that the two ends of the pin 40 (ie, The two protrusions 75 are movably received in the two guide grooves 324, and the two ends of the elastic member 50 abut against the bottom wall 65 of the gear member 60 and the shaft 70 of the transmission member 20, respectively. The second end 72, the elastic force generated by the elastic member 50 acts along the drum shaft L on the second end 72 of the shaft 70 of the transmission member 20, so that the transmission assembly 100 of the photosensitive drum unit is in a normal state. The pin 40 of the shaft 70 (ie, the two protrusions 75) abuts against the top or top end of the two guide grooves 324 of the sleeve 30.

Figure 17 is a transmission assembly 300 of a photosensitive drum unit according to another embodiment, which is substantially identical to the transmission assembly 200 shown in Figure 2B, except that the transmission member 20' of the transmission assembly 300 and the transmission assembly 200 are driven. Pieces 20 are different. Figure 18 shows the transmission member 20' having the shaft, the base, and the two snap blocks in this embodiment.

Referring to Figures 17, 18, in the present embodiment, the shaft 70 has a first member 70a and a second member 70b, each of the members 70a, 70b including a semi-cylindrical body 701a, 701b having a base portion 81 having Two partial base portions 81a and 81b, each of the partial base portions 81a, 81b extending from one end of each of the semi-cylindrical bodies 701a, 701b, the first member 70a and the semi-cylindrical body 701a of the second member 70b and The 701b are detachably joined to each other.

In this embodiment, each of the semi-cylindrical bodies 701a, 701b has an elongate plane parallel to the drum axis L, at least one protrusion 702a protrudes from the elongate plane, and at least one groove 703a is formed by the elongate shape At least one protrusion 702a of the semi-cylindrical body 701a of the first component 70a is received in at least one groove 703b of the semi-cylindrical body 701b of the second component 70b, and the assembly is recessed. At least one protrusion 702b of the semi-cylindrical body 701b of the second member 70b is received in at least one groove 703a of the semi-cylindrical body 701a of the first member 70a, in other words, the first of the shaft 70 The semi-cylindrical bodies 701a, 701b of the second members 70a, 70b are detachably joined to each other.

In this embodiment, the base portion 81 has two base portions 81a, 81b, and each of the portion base portions 81a, 81b has two protrusions 812a extending toward the at least two receiving slots 811, such that the protrusions 812a are The position of the pivot shaft corresponds to the assembly.

In this embodiment, each of the engaging blocks 82 is substantially the same as that shown in FIG. 8, except that the second through holes 827a are located on opposite sides of the bottom instead of the through holes 827, so that when assembled, the two partial bases 81a, The two pillars 812a are accommodated in the two through holes 827a of the two latching blocks 82. Therefore, the latching blocks 82 can rotate about the pivot axis of the second end portion 829b of the bottom portion 829.

Figure 19 is a transmission member 20" provided by another embodiment, which is substantially the same as the transmission member 20' shown in Figure 18, except that part of the base portion of the transmission member 20" and the engaging block are different from the transmission member 20' In this embodiment, each of the partial base portions 81'a, 81'b has two through holes 812'a facing the at least two receiving notches 811, respectively, such that the perforations 812'a are assembled with the pivot axis. The location is consistent. In addition, each of the engaging blocks 82' has two protrusions 827'a protruding from the bottom portion, so that the two protrusions 827'a of the engaging blocks 82' are accommodated in the two-part base 81' during assembly. a corresponding one of the two perforations 812'a of 81'b, whereby each of the engaging blocks 82' is rotatable about the pivot axis.

Figure 20 is a view showing the assembly process of the transmission member 20' (or the transmission member 20") and the holder 89' provided by an embodiment of the present invention, which is the same as that shown in Fig. 9, in this embodiment, the elasticity The ring 89' has two earrings 891 on opposite sides of the elastic ring 89', whereby the hooks 826 of the bottom 829 of the two snap blocks 82 are lapped with the two earrings 891 of the elastic ring 89'. In addition to this, a spring can be used to connect the hook portion 826 of the bottom 829 of the two snap block 82.

21 is the assembly process of the transmission assembly 300, which is the same as the transmission assembly 100 shown in FIG. 16. First, the elastic member 50 is placed in the shaft hole 322 of the sleeve 30, as shown in FIG. 21A. As shown, the shaft hole 322 of the sleeve 30 is in communication with the tubular body 61 of the gear member (housing) 60. Secondly, the shaft 70 of the transmission member 20' is inserted into the shaft hole 322 of the sleeve 30, such as As shown in Fig. 21B, the pin 40 is then passed through the groove 69 of the gear member 60 and the guide groove 324 of the sleeve 30 into the insertion hole 73 of the shaft 70 of the transmission member 20', such as As shown in FIG. 21C, the two ends of the latch 40 (ie, the two bumps 75) are movably received in the two guiding slots 324, and the two ends of the elastic member 50 are respectively abutted. The elastic force generated by the elastic member 50 acts on the shaft of the transmission member 20' along the drum shaft L at the bottom wall 65 of the gear member 60 and the second end 72 of the shaft 70 of the transmission member 20'. The second end 72 of the 70, in the normal state, the pin 40 of the shaft 70 (that is, the two protrusions 75) abuts against the top or top of the two guide grooves 324 of the sleeve 30. .

When the transmission assembly 100, 200, 300 is used, the housing 60 is fixed to a photosensitive drum for being disposed in a toner cartridge (not shown), and the snap-fit structure 80 of the transmission member 20 is covered by the toner cartridge. One end of the driver extends the toner cartridge into a housing (not shown) of an electronic imaging device, and the latching structure 80 of the driver 20 and a driver in the housing of the electronic imaging device The component 90 is engaged, and a part of the driving component 90 of the electronic imaging device is received in the accommodating space 86, and the two hooking slots 823 are respectively provided for the convexity of the driving component 90 of the electronic imaging device. The column 92 is extended and snapped, and the photosensitive drum can be rotated by the driving member 90 of the electronic image forming apparatus.

In the present invention, the photosensitive drum unit is simpler in construction than the prior art, and the manner in which the photosensitive drum unit is coupled and separated from the driving member 90 of the electronic imaging device is different from the prior art, since the transmission member 20 can be along the The drum shaft L moves and rotates around the drum shaft L at the same time, and the engaging block 82 of the transmission member 20 has a specially designed shape, so that the photosensitive drum unit enters or exits the housing of the electronic imaging device at any angle. The transmission member 20 can be firmly coupled with the driving member 90 and smoothly separated.

The detailed process of combining and disengaging the transmission assembly of the photosensitive drum unit with the driving member is disclosed in the application of TW103133602, which is not described herein.

The foregoing embodiments of the present invention are intended to be illustrative and not restrictive

The embodiment of the present invention has been described and described in order to explain the principles of the present invention and the application of the embodiments of the present invention. The rest of the embodiments can be easily conceived by those skilled in the art, and the scope of the present invention is defined by the scope of the claims and not by the description of the foregoing description and its embodiments.

1‧‧‧Drive components
702a‧‧‧Bumps
823a‧‧‧ recess
10‧‧‧Photosensitive drum
702b‧‧‧Bumps
823b‧‧‧ Limiting surface
100‧‧‧Transmission components
703a‧‧‧ Groove
824‧‧‧ inside side
20‧‧‧ Transmission parts
703b‧‧‧ Groove
825‧‧‧ outside side
20'‧‧‧ Transmission parts
71‧‧‧ first end
826‧‧‧ hook
20”‧‧‧ Transmission parts
72‧‧‧ second end
827‧‧‧Perforation
200‧‧‧ Transmission components
73‧‧‧ jack
827'‧‧‧Bump
30‧‧‧ sleeve
74‧‧‧ rod body
827a‧‧‧Perforation
300‧‧‧Transmission components
75‧‧‧Bumps
828‧‧‧ Limit
32‧‧‧Ontology
80‧‧‧Card structure
828'‧‧‧ Limit
322‧‧‧Axis hole
81‧‧‧ base
829‧‧‧ bottom
324‧‧ ‧ guide slot
81a‧‧‧Partial base
829a‧‧‧ first end
34‧‧‧Bump
81'a‧‧‧ part of the base
829b‧‧‧second end
40‧‧‧ latch
81b‧‧‧Partial base
83‧‧‧ latch
50‧‧‧Flexible parts
81'b‧‧‧ part of the base
86‧‧‧ accommodating space
60‧‧‧ Gear parts (housing)
811‧‧‧ vacant slots
89‧‧‧ holding parts (elastic ring)
61‧‧‧ tube body
811a‧‧‧ openings
89'‧‧‧ holding parts (elastic ring)
64‧‧‧ top wall
811b‧‧‧ trench
891‧‧ Earrings
65‧‧‧ bottom wall
812‧‧‧ hole
90‧‧‧ Drives
66‧‧‧ top
812a‧‧‧Bump
92‧‧‧Bump
67‧‧‧ Gear Department
812'‧‧‧a perforation
D1‧‧‧ first direction
68‧‧‧ bottom
818‧‧‧stops
D2‧‧‧ second direction
69‧‧‧ trench
82‧‧‧ card block
L‧‧‧Drum shaft
70‧‧‧ shaft
82'‧‧‧ card block
N1‧‧‧Width
70a‧‧‧ first part
820‧‧‧Card claws
N2‧‧‧Width
70b‧‧‧second part
821‧‧‧Top
W1‧‧‧ first width
701a‧‧‧Semi-cylindrical body
822‧‧‧Sloping top surface
W2‧‧‧ second width
701b‧‧‧Semi-cylindrical body
823‧‧‧Check card slot

The drawings are illustrative of one or more embodiments of the invention, and together with the written description. In the embodiments, the same reference numerals in the drawings refer to the same or similar elements. 1 is a perspective view of a photosensitive drum unit according to an embodiment of the present invention; FIG. 2 is an exploded perspective view of a photosensitive drum unit according to an embodiment of the present invention; and FIG. 2B is a photosensitive drum according to another embodiment of the present invention. 3(A) and (B) are perspective views of a transmission member of a second embodiment of the present invention, and a photosensitive drum unit according to an embodiment of the present invention, the transmission member thereof A perspective view (A) and a top view (B); Fig. 5 is a perspective view of a photosensitive drum unit according to an embodiment of the present invention, and a different perspective view of the engaging block of the transmission member (A)-(D); Embodiment Photosensitive drum unit, schematic diagram of assembling process of the transmission member (A)-(F); Fig. 7 is a photoreceptor drum unit according to another embodiment of the present invention, a perspective view of the transmission member (A), and another perspective view (B) And a top view (C); Fig. 8 is a perspective view of a photosensitive drum unit according to another embodiment of the present invention, and a different perspective view of the engaging block of the transmission member (A)-(D); Another embodiment of the photosensitive drum unit, the assembly process of the transmission member schematic diagrams 9A-9C and 10A-10F; FIG. 11 is a photosensitive drum according to an embodiment of the present invention A top view (A), a cross-sectional view (B) of the sleeve, and another cross-sectional view (C); FIG. 12 is a cross-sectional view (A) and a perspective view of the sleeve of the photosensitive drum unit of one embodiment of the present invention ( B); Fig. 13 is a perspective view of a photosensitive drum unit according to an embodiment of the present invention, a gear member thereof, and a combination of a sleeve and a gear member (A), a top view (B), a cross-sectional view (C), and another cross-sectional view (D). Fig. 14 is a perspective view of a photosensitive drum unit according to an embodiment of the present invention, and Fig. 15 is a perspective view of an elastic member of a photosensitive drum unit according to an embodiment of the present invention; and Fig. 16 is an embodiment of the present invention (A)-(C); FIG. 17 is an exploded perspective view of a photosensitive drum unit according to an embodiment of the present invention; and FIG. 18 is a transmission member and an assembly process thereof according to an embodiment of the present invention. (A)-(D); FIG. 19 is a transmission member according to another embodiment of the present invention and an assembly process thereof (A)-(D); FIG. 20 is an assembly of a transmission member and a holder according to an embodiment of the present invention. Process (A)-(D); Fig. 21 is a process (A)-(D) of assembling a photosensitive drum unit according to an embodiment of the present invention.

20’‧‧‧ Transmission parts

30‧‧‧ sleeve

300‧‧‧Transmission components

40‧‧‧ latch

50‧‧‧Flexible parts

60‧‧‧ Gear parts (housing)

70a‧‧‧ first part

70b‧‧‧second part

701a‧‧‧Semi-cylindrical body

701b‧‧‧Semi-cylindrical body

73‧‧‧ jack

81a‧‧‧Partial base

81b‧‧‧Partial base

812a‧‧‧Bump

82‧‧‧ card block

89'‧‧‧ holding parts (elastic ring)

D1‧‧‧ first direction

D2‧‧‧ second direction

L‧‧‧Drum shaft

Claims (23)

A photosensitive drum unit comprising: a photosensitive drum having a drum shaft (L); a casing (60) detachably coupled to the photosensitive drum and coaxial with the drum shaft (L); a sleeve (30) disposed on the housing (60) and coaxial with the drum shaft (L); and a transmission member (20) disposed on the sleeve (30) and coaxial with the drum shaft (L), the transmission The member (20) includes a shaft (70) and at least two engaging blocks (82) rotatable relative to the sleeve (30) about the drum shaft (L) and The sleeve (30) moves along the drum shaft (L), one end of the shaft (70) has a base (81), and the at least two snap blocks (82) are opposite sides of the base (81) Extending away from the drum shaft (L), wherein two opposite sides of the base portion (81) respectively have a pivoting shaft, and each of the engaging blocks (82) is rotatable about the two pivoting shafts respectively. The shaft is perpendicular to the drum shaft (L). The photosensitive drum unit of claim 1, wherein the base (81) has at least two receiving slots (811) disposed on opposite sides of the base (81), wherein each of the engaging blocks (82) ) is pivotally received in each of the receiving slots (811) such that each of the latching blocks (82) is rotatable about the pivoting axis. The photosensitive drum unit of claim 2, wherein each of the engaging blocks (82) has a bottom, a engaging claw extends upward from the bottom, and a through hole (827) is assembled with the The positions of the pivot axes are consistent. The photosensitive drum unit of claim 3, wherein each of the engaging blocks (82) is pivotally coupled to the base (81) by a plug (83) inserted into the through hole. The photosensitive drum unit of claim 2, wherein the shaft (70) comprises a first member (70a) and a second member (70b), each of the members comprising a semi-cylindrical body (701a, 701b) And a portion of the base (81a, 81b) is disposed at one end of the semi-cylindrical body (701a, 701b), wherein the first member and the second member (70a, 70b) are two semi-cylindrical bodies (701a) , 701b) are detachably joined to each other. The photosensitive drum unit of claim 5, wherein each of the semi-cylindrical bodies (701a) has at least one protrusion (702a) protruding from a plane of each of the semi-cylindrical bodies, and at least one The groove (703a) is recessed by the plane of the semi-cylindrical body. The photosensitive drum unit of claim 6, wherein, in the assembled state, at least one bump (702a) of the semi-cylindrical body of the first component (70a) is received in the second component ( At least one groove (703b) of the semi-cylindrical body of 70b), and at least one protrusion (702b) of the semi-cylindrical body of the second member (70b) is received by the first member (70a) At least one groove (703a) of the semi-cylindrical body. The photosensitive drum unit of claim 5, wherein each of the partial bases (81a, 81b) has two protrusions (812a) extending toward the at least two receiving slots (811), respectively, such that the protrusions Corresponding to the position of the pivot axis during assembly. The photosensitive drum unit of claim 8, wherein each of the engaging blocks (82) has a bottom, a engaging claw extending upward from the bottom, and two perforations (827a) on the opposite side, The two protrusions (812a) of the base portion of the portion are received in the two perforations (827a) of the respective snap blocks (82). The photosensitive drum unit of claim 5, wherein each of the partial bases (81a, 81b) has two perforations facing the at least two receiving slots (811), such that the perforations are assembled and the pivot The positions of the shafts are consistent. The photosensitive drum unit of claim 10, wherein each of the engaging blocks (82) has a bottom portion, a engaging claw extending upward from the bottom portion, and two oppositely protruding protruding posts for assembling The two studs of each of the snap blocks are received in corresponding perforations of the base portion of the portion. The photosensitive drum unit of claim 1, wherein the sleeve (30) is integrally formed with the housing (60) and coaxial with the drum shaft (L). a transmission member for engaging with a photosensitive drum, the photosensitive drum having a drum shaft (L), wherein a sleeve (30) is coaxially coupled to the photosensitive drum, the transmission member comprising: a shaft (70), rotatable relative to the sleeve (30) about the drum shaft (L), and movable relative to the sleeve (30) along the drum shaft (L), the shaft (70) One end has a base portion (81); and at least two snap blocks (82) extend from opposite sides of the base portion (81) away from the drum shaft (L), wherein the base portion (81) is opposite The sides each have a pivot axis, and each of the snap blocks (82) is rotatable about the two pivot axes, respectively, the pivot axis being perpendicular to the drum axis (L). The transmission member according to claim 13, wherein the base portion (81) has at least two receiving slots (811) disposed on opposite sides of the base portion (81), wherein each of the latching blocks (82) The plurality of latching slots (811) are pivotally received in each of the receiving slots (811) for rotation about the pivoting axis. The transmission member of claim 14, wherein each of the snap blocks (82) has a bottom portion, a latching claw extending upwardly from the bottom portion, and a through hole (827) being assembled and pivoted The positions of the shafts are consistent. The transmission member according to claim 15, wherein each of the engaging blocks (82) is pivotally coupled to the base (81) by a plug (83) inserted into the through hole. The transmission member of claim 14, wherein the shaft (70) comprises a first member (70a) and a second member (70b), each of the members comprising a semi-cylindrical body (701a, 701b) And a portion of the base (81a, 81b) is disposed at one end of the semi-cylindrical body (701a/701b), wherein the first member and the second member (70a, 70b) are two semi-cylindrical bodies (701a, 701b) are detachably joined to each other. The transmission member of claim 17, wherein each of the semi-cylindrical bodies (701a) has at least one protrusion (702a) projecting from a plane of each of the semi-cylindrical bodies, and at least one concave The grooves (703a) are recessed by the plane of each of the semi-cylindrical bodies. The transmission member of claim 18, wherein, in the assembled state, at least one protrusion of the semi-cylindrical body of the first member is received in at least one of the semi-cylindrical bodies of the second member The recess and the at least one protrusion of the semi-cylindrical body of the second component are received in at least one recess of the semi-cylindrical body of the first component. The transmission member of claim 17, wherein each of the base portions (81a, 81b) has two protrusions (812a) extending toward the at least two receiving slots (811), respectively, such that the protrusions are The position of the pivot shaft corresponds to the assembly. The transmission member according to claim 20, wherein each of the engaging blocks (82) has a bottom portion, a engaging claw extending upward from the bottom portion, and two through holes on opposite sides, so that when assembled The two studs of the partial base are received in the two perforations of each of the engaging blocks (82). The transmission member according to claim 17, wherein each of the base portions (81a, 81b) has two perforations facing the at least two receiving slots (811), respectively, so that the perforations are assembled and the pivot shaft The location corresponds to the same. The transmission member according to claim 22, wherein each of the engaging blocks (82) has a bottom portion, a engaging claw extending upward from the bottom portion, and two opposite protruding protruding posts, so as to be assembled The two studs of each of the engaging blocks are received in corresponding through holes of the two portions of the base.