CN221322042U - Door handle assembly - Google Patents

Abstract

The utility model relates to the technical field of door hardware, and discloses a door handle assembly, which comprises: an inner handle; an outer handle; the square core is provided with two ends respectively arranged in the inner handle and the outer handle, and one end of the square core rotates synchronously with the inner handle; the clutch mechanism is arranged between the square core and the outer handle and is used for connecting the square core with the outer handle when the square core is closed; the locking piece is arranged on the journal part of the inner handle in a sliding way and is linked with the clutch mechanism, and when the locking piece slides from one side to the other side, the clutch mechanism is driven to separate, so that the outer handle is disconnected with the square core. The door handle assembly can realize the back locking function without adopting a structure in the door lock, and the locking piece for controlling the back locking function is arranged on the journal part of the inner handle, so that the appearance of the front visual surface of the inner handle is not influenced, and the front visual surface of the inner handle is ensured to have a concise appearance.

Description

Door handle assembly

Technical Field

The utility model relates to the technical field of door hardware, in particular to a door handle assembly.

Background

The door lock is usually provided with a back locking mechanism, and the back locking mechanism is mainly realized through a back locking knob/back locking button arranged on the front end face of the door handle or arranged on one side of the door handle in a split mode, and the back locking knob is rotated or the back locking button is pressed to drive a linkage device inside the lock body to rotate, so that the door lock is back locked. The type of counter locking mechanism can increase the structure of the outer surface of the door lock, especially the visible surface of the front end, and is not suitable for application scenes with extremely simple styles.

Disclosure of utility model

The utility model is made to solve the technical problems, and aims to provide a door handle assembly, which can realize the back locking function without exposing the visible surface at the front end of the door handle assembly.

In order to achieve the above object, the present utility model provides a door handle assembly comprising: an inner handle; an outer handle; the square core is provided with two ends respectively arranged in the inner handle and the outer handle, and one end of the square core rotates synchronously with the inner handle; the clutch mechanism is arranged between the square core and the outer handle and is used for connecting the square core with the outer handle when the square core is closed; the locking piece is arranged on the journal part of the inner handle in a sliding way and is linked with the clutch mechanism, and when the locking piece slides from one side to the other side, the clutch mechanism is driven to separate, so that the outer handle is disconnected with the square core.

Preferably, the clutch mechanism includes: a ball; an unlocking sleeve is rotatably arranged at one end, far away from the inner handle, of the outer handle, and a first groove capable of accommodating the ball is formed in the periphery of the unlocking sleeve; the handle head is of a hollow structure, one end, close to the inner handle, of the outer handle is rotatably arranged, a first through hole through which the ball can pass is formed in the side wall of the handle head, and the square core is inserted into the handle head; the connecting rod is rotatably arranged in the square core, one end of the connecting rod is provided with a spiral guide hole for inserting the locking piece along the peripheral surface, and the other end of the connecting rod penetrates through the handle head and is inserted into the unlocking sleeve; the second groove is formed on the inner wall of the outer handle and can accommodate the ball; one end of the locking piece is inserted into the guide hole, the other end of the locking piece extends out of the shaft neck part, when the locking piece is not positioned at the locking position, the first groove is dislocated with the first through hole, and the ball is positioned in a containing space formed by the second groove and the first through hole; when the locking piece slides to a locking position on the journal part, the connecting rod and the unlocking sleeve are driven to rotate by a preset angle, and the first groove is opposite to the first through hole.

Preferably, one end side surface of the locking member abuts against an end of the guide hole.

Preferably, the connecting rod is circumferentially and uniformly provided with two guide holes with the same spiral direction; two first grooves are uniformly formed in the unlocking sleeve; the handle head is uniformly provided with two first through holes; two second grooves are uniformly formed in the outer handle; the number of the balls is two.

Preferably, a sliding plate connected with the locking piece is arranged in the side wall of the inner handle in an axial sliding manner.

Preferably, the method further comprises: the fixed seat is sleeved on the periphery of the journal part, and one side surface of the fixed seat is provided with a V-shaped groove opposite to the end surface of the sliding plate; the first limit groove is arranged on the inner wall of the outer handle; the boss is arranged on the periphery of the handle head, one side face of the boss is abutted against one side wall of the first limit groove, and the width of the boss in the circumferential direction is smaller than that of the first limit groove; wherein when the locking member is in the locking position, one end of the slide plate abuts in the V-shaped groove.

Preferably, one end of the sliding plate is formed with a protrusion structure with a middle portion extending toward the V-shaped groove.

Preferably, the method further comprises: the decorative cover is sleeved on the periphery of the fixed seat; the rubber ring is embedded on the outer peripheral side wall of the fixing seat at the inner side, and the outer side is abutted on the inner wall of the decorative cover.

Preferably, the end face of the outer handle is provided with a second through hole; one end of the unlocking sleeve is arranged in the second through hole, and a third groove is formed in the end face of the unlocking sleeve.

Preferably, the locking piece is arranged on the journal part of the inner handle in an axial sliding way; the clutch mechanism comprises a connecting rod and a connecting hole, the connecting rod is slidably arranged in the square core and rotates synchronously with the square core, the connecting hole is arranged at the position, opposite to the connecting rod, in the outer handle, the cross sections of the connecting rod and the connecting hole are non-circular, and the locking piece is connected with the connecting rod; when the locking piece is not positioned at the locking position, one end of the connecting rod is positioned in the connecting hole, and the outer handle and the connecting rod can synchronously rotate; when the locking piece moves to the locking position, one end of the connecting rod is moved out of the connecting hole.

Preferably, the locking piece is arranged on the journal part of the inner handle in an axial sliding way; the clutch mechanism comprises a connecting rod and a connecting hole, the connecting rod is arranged in the square core in a sliding manner, the connecting hole is arranged in the position, opposite to the connecting rod, of the outer handle, one end of the connecting rod is provided with a connecting part, the cross sections of the connecting part, the connecting hole and the square core are identical in shape and non-circular, and the other end of the connecting rod is connected with the locking piece and can rotate relatively to the locking piece and slide synchronously along the axial direction; when the locking piece is not positioned at the locking position, the connecting part is positioned in the connecting hole and the square core, and the outer handle and the square core can synchronously rotate; when the locking piece moves to the locking position, the connecting part is only positioned in the connecting hole.

According to the description and practice, the door handle assembly can realize the back locking function without adopting a structure in the door lock, and the locking piece for controlling the back locking function is arranged on the journal part of the inner handle, so that the appearance of the front visual surface of the inner handle is not influenced, and the front visual surface of the inner handle is ensured to have a concise appearance.

Drawings

Fig. 1 is a perspective view of a door handle assembly according to a first embodiment of the present utility model.

Fig. 2a and 2b are cross-sectional views of a door handle assembly according to a first embodiment of the present utility model, the two cross-sections being perpendicular to each other.

FIG. 3a is a schematic view of the structure of section A-A in FIG. 2 b.

Fig. 3b is a schematic view of the unlocking sleeve in fig. 3a rotated 90 °.

FIG. 4 is a schematic view of the structure of section B-B in FIG. 2B.

Fig. 5 is a schematic structural view of an unlocking sleeve according to a first embodiment of the present utility model.

Fig. 6 is a schematic structural view of a handle head according to a first embodiment of the present utility model.

Fig. 7 is an assembly schematic diagram of the inner handle inner part and the fixing base according to the first embodiment of the present utility model.

Fig. 8 is a partially exploded view of a door handle assembly according to a first embodiment of the present utility model, showing the structure of a fixing base and its outer peripheral rubber ring and decorative cover.

Fig. 9 is a schematic cross-sectional view of a door handle assembly according to a second embodiment of the present utility model.

Fig. 10 is a schematic cross-sectional view of a door handle assembly according to a third embodiment of the utility model.

The reference numerals in the figures are:

1. inner handle 11, slide hole 12 and slide way

13. Slide plate 2, outer handle 3, square core

4. Locking member 51, ball 52, unlocking sleeve

53. Handle head 54, connecting rod 55, and guide hole

56. Boss 57, connecting hole 58, first limit groove

59. A connecting portion 61, a first groove 62, a second groove

63. Third groove 71, first through hole 72, second through hole

8. The fixing seat 81, the V-shaped groove 82 and the second limit groove;

83. rubber ring 84, decorative cover 9 and connecting block

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. In the present disclosure, the terms "comprising," "including," "having," "disposed in" and "having" are intended to be open-ended and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like, are used merely as labels, and do not limit the number or order of their objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

In this embodiment, a door handle assembly is disclosed, referring to fig. 1-7, which includes an inner handle 1, an outer handle 2, a square core 3, a locking member 4, and a clutch mechanism. The middle part of the square core 3 is connected with components in the lockset when in use, and the lockset is controlled to unlock through the rotation of the square core 3. The two ends of the square core 3 are respectively arranged in the inner handle 1 and the outer handle 2, the clutch mechanism is arranged between the square core 3 and the outer handle 2, and the locking piece 4 is arranged on the journal part of the inner handle 1 in a sliding way and is linked with the clutch mechanism so as to control the closing/separating of the clutch mechanism. Specifically, one end of the square core 3 is directly connected with the inner handle 1, and the square core 3 and the inner handle 1 can synchronously rotate, namely the square core 3 can be rotated by rotating the inner handle 1; the other end of the square core 3 is connected with the outer handle 2 through a clutch mechanism, and the square core 3 is connected with the outer handle 2 only when the clutch mechanism is closed, and the square core 3 can be rotated by rotating the outer handle 2 at the moment, so that unlocking is realized.

The locking member 4 is operable to switch between a locked position and an unlocked position by user operation and to control the disengagement/engagement of the clutch mechanism during the switching. When the locking piece 4 slides from one side to the other side, the locking piece can move from the non-locking position to the locking position and drive the clutch mechanism to separate, so that the outer handle 2 is disconnected from the square core 3.

Specifically, the locking member 4 is provided as: when not in the locking position, the clutch mechanism is closed, and the outer handle 2 can rotate the square core 3 through the clutch mechanism, namely, the door handle assembly is not locked; after the locking member 4 is moved to the locking position, the clutch mechanism is disengaged, and the outer handle 2 cannot rotate the square core 3, i.e., the door handle assembly is in the locked state.

The door handle assembly in the structural form can realize the back locking function without adopting a structure in the door lock, and the locking piece 4 for controlling the back locking function is arranged on the shaft neck part of the inner handle 1, so that the appearance of the front visual surface of the inner handle 1 is not influenced, and the front visual surface of the inner handle 1 is ensured to have a concise appearance.

In this embodiment, the inner handle 1 and the outer handle 2 are both conventional L-shaped handles, and the journal portion thereof has a hollow cavity for accommodating the square core 3, the locking member 4, the clutch mechanism, and the like. In other embodiments, a spherical or sphere-like handle may be used, in which case the locking member 4 may be disposed on the journal portion of the handle, i.e., the portion of the side surface adjacent to the lock body, so that the above-mentioned anti-locking function is achieved without affecting the appearance of the visible surface at the front end of the inner handle 1.

Further, in this embodiment, a specific clutch mechanism is disclosed, comprising: ball 51, unlocking sleeve 52, handle 53, connecting rod 54 and second recess 62. Wherein the unlocking sleeve 52 is rotatably arranged at one end of the outer handle 2 far away from the inner handle 1, i.e. the left end in fig. 2a, and a first groove 61 for accommodating the ball 51 is arranged at the outer periphery of the unlocking sleeve 52. The handle head 53 has a hollow structure, and is rotatably disposed at one end of the outer handle 2 near the inner handle 1, i.e., the right end in fig. 2a, and a first through hole 71 through which the ball 51 passes is formed in a sidewall of the handle head 53. The left end of the square core 3 is inserted into the right end of the handle head 53, and the square core and the handle head synchronously rotate when in use. The square core 3 is in this embodiment a hollow square tube, and the connecting rod 54 is rotatably arranged in the square core 3, which is rotatable relative to the square core 3. The right end of the connecting rod 54 is connected to the locking member 4, and the left end is inserted into the right end of the unlocking sleeve 52 after passing through the handle head 53. The connecting rod 54 and the unlocking sleeve 52 rotate synchronously in use, and the connecting rod 54 and the handle head 53 can rotate relatively. A second groove 62 is formed in the inner wall of the outer handle 2 for receiving the ball 51.

At least a part of the areas of the first groove 61, the second groove 62 and the first through hole 71 are located in the same annular range, and when the unlocking sleeve 52, the handle head 53 and the outside handle 2 are rotated, there is a case where the first groove 61, the second groove 62 and the first through hole 71 are opposite. In the initial state, the balls 51 are disposed in the second grooves 62 and the first through holes 71, i.e., the state shown in fig. 3a, in which the outside handle 2 and the handle head 53 can be rotated synchronously; when the first groove 61, the second groove 62 and the first through hole 71 are opposite, the ball 51 can be moved into the first groove 61 and the first through hole 71, and the outer handle 2 and the handle head 53 lack the linkage of the ball 51 and do not rotate synchronously, in which case, the outer handle 2 cannot be turned to unlock, i.e. the door handle assembly is in the back-locked state.

Specifically, when the locking member 4 is not in the locking position, the first groove 61 is displaced from the first through hole 71, the second groove 62 is opposite to the first through hole 71, and the ball 51 is located in the accommodation space formed by the second groove 62 and the first through hole 71. Referring to fig. 3a, the left side of the ball 51 abuts against the sidewall of the second groove 62, the right side abuts against the outer wall of the unlocking sleeve 52, and the upper and lower ends abut against the sidewall of the second groove 62 adjacent to the first through hole 71. At this time, the radial displacement of the ball 51 is limited, and the outer handle 2 and the handle head 53 can be rotated synchronously by the ball 51. When the user controls the locking member 4 to move a predetermined distance on the journal portion, the locking member 4 is at the locking position, and in this process, the locking member 4 drives the connecting rod 54 and the unlocking sleeve 52 to rotate by a predetermined angle, and the first groove 61 is opposite to the first through hole 71, i.e. the state shown in fig. 3 b. In this embodiment, the unlocking sleeve 52 is set to be rotated 90 °, and the first groove 61 is opposed to the first through hole 71. At this time, when the outer handle 2 is rotated, the second groove 62 on the outer handle 2 pushes the ball 51 inwards, so that the ball 51 is located in the first through hole 71 and the first groove 61, and a linkage member is absent between the corresponding handle head 53 and the outer handle 2, and the square core 3 cannot be rotated even if the outer handle 2 is continuously rotated, that is, the door handle assembly is in a back locking state.

Further, in this embodiment, the ball 51 has a cylindrical structure, and two ends thereof have arc surfaces, so that the ball can slide smoothly during use, and the ball is not easy to be jammed. In addition, the second groove 62 has an arc-shaped cross section, and the maximum contact length of the second groove and the ball 51 in the circumferential direction is not more than half of the circumferential length of the ball 51, so when the right side of the ball 51 is not blocked by the unlocking sleeve 52, the outer handle 2 can easily push the ball 51 to move in the radial direction, and then the clutch mechanism is separated, namely, the back locking is realized. Similarly, the cross section of the first groove 61 is also arc-shaped, and the maximum contact length of the first groove 61 with the ball 51 in the circumferential direction is not more than half of the circumferential length of the ball 51, so that when the handle head 53 is rotated, the first groove 61 can easily push the ball 51 to move radially outwards, and then enter the second groove 62 to close the clutch mechanism, namely release the back lock.

Such a clutch mechanism can control the separation/closure of the clutch mechanism by controlling the rotation of the unlocking sleeve 52. Specifically, the user may indirectly control the rotation of the unlocking sleeve 52 through the locker 4. In this embodiment, in order to minimize the exposure of the locking member 4, the locking member 4 is axially slidably disposed on the journal portion of the inner handle 1, preferably on the side of the inner handle 1 where it is bent, and may be shielded by the grip portion of the inner handle 1. Referring to fig. 1, 2 and 7, the locking member 4 is a rod-shaped member in this embodiment, the length direction of the rod-shaped member is along the radial direction of the inner handle 1, the outer end extends to the outside of the inner handle 1, and the outer end is slidable in a slide hole 11 on the journal portion, and the slide hole 11 is disposed in the axial direction. A guide hole 55 into which the locking member 4 is inserted is formed in a spiral shape along the outer circumferential surface at an end portion of the connecting rod 54 near the locking member 4, and an inner end of the locking member 4 is inserted into the guide hole 55. When the locking member 4 slides axially, the side surface abuts against the guide hole 55 to drive the connecting rod 54 to rotate, so that the unlocking sleeve 52 rotates. In other words, the lock 4 can be changed between the linear motion and the rotational motion by providing the guide hole 55. The structure of this structural form can fully utilize the space in the inner handle 1 and can make the locking member 4 more hidden outside.

It should be noted that, in this embodiment, when the locking member 4 is not in the locked position, rotating the outer handle 2 may drive the handle head 53 and the square core 3 to rotate, and then drive the inner handle 1 to rotate, and the inner handle 1 may also drive the locking member 4, the connecting rod 54 and the unlocking sleeve 52 to rotate, so as to ensure that the unlocking sleeve 52 and the handle head 53 do not rotate relatively, and the first groove 61 is always arranged in dislocation with the first through hole 71 when not locked. Similarly, when the locking member 4 is not at the back locking position, the inner handle 1 is rotated to drive the square core 3 and the handle head 53 to rotate, then the outer handle 2 is driven to rotate by the balls 51, and the inner handle 1 also drives the locking member 4, the connecting rod 54 and the unlocking sleeve 52 to rotate, so that the unlocking sleeve 52 and the handle head 53 are ensured not to rotate relatively, and the first groove 61 is always arranged in dislocation with the first through hole 71 when not locked. In order to make the rotation of the inside handle 1 more stable with the rotation of the lock member 4, the lock member 4 is provided with an inner end thereof abutting against one end of the guide hole 55 when not in the locked position. Therefore, the locking member 4 can more stably rotate the connecting rod 54 when rotating around the axial direction.

In the present embodiment, the end portion of the connecting rod 54 is provided with two guide holes 55 having the same spiral direction uniformly in the circumferential direction. One end of the connecting rod 54, which is close to the locking member 4, is fixedly connected or integrally formed with a cylindrical connecting member, the guide holes 55 are formed in the connecting member, and the inner ends of the locking member 4 are inserted into the two guide holes 55, so that the linkage between the connecting rod 54 and the locking member 4 is more stable. Similarly, two first grooves 61 are uniformly provided on the unlocking sleeve 52, two first through holes 71 are uniformly provided on the handle head 53, two second grooves 62 are uniformly provided on the inner wall of the outer handle 2, and two balls 51 are provided in total. With this structure, the interlocking of the outer handle 2, the unlocking sleeve 52 and the handle head 53 can be more stable. Ensuring that the door handle assembly is not easy to be blocked when in use.

In addition, in order to further improve the stability of the locking member 4, to prevent it from rocking in the slide hole 11, a slide plate 13 connected to the locking member 4 is provided in the side wall of the inner handle 1 to slide in the axial direction. Specifically, a slide way 12 is axially arranged in the inner wall of the inner handle 1, a slide plate 13 is arranged in the slide way 12, a threaded hole is formed in the middle of the slide plate 13, threads are arranged on the periphery of the locking piece 4 and are connected in the threaded hole in a threaded manner, and connection with the slide plate 13 is achieved. By providing the slide plate 13, the locking member 4 can be smoothly slid at the time of use.

Further, in this embodiment, the inner handle 1 and the outer handle 2 may be fixedly mounted on a door leaf or a lock through a fixing base 8 in use, the fixing base 8 is sleeved on the outer circumference of the collar portion of the inner handle 1 and the collar portion of the outer handle 2, and the inner handle 1 and the outer handle 2 may rotate relative to the fixing base 8. A V-shaped groove 81 is formed on one side of the holder 8 opposite to the end surface of the slide plate 13, and when the lock member 4 is slid to the left in fig. 2 in the lock position, the front end surface of the slide plate 13 is positioned in the V-shaped groove 81. Then, when the inner handle 1 is turned, the front end of the slide plate 13 abuts against the side wall of the V-shaped groove 81, and is pushed by the side wall of the V-shaped groove 81 to slide rightward, so that the lock member 4 is moved rightward to return to the original position, and the back lock is released. Meanwhile, a first limit groove 58 is further formed in the inner wall of the outer handle 2, a boss 56 is further arranged on the periphery of the handle head 53, the boss 56 is arranged in the first limit groove 58, one side wall abuts against the side wall of the first limit groove 58, and the width of the boss 56 in the circumferential direction is smaller than that of the first limit groove 58. The purpose of the boss 56 and the first limit groove 58 is to allow the outer handle 2 to be rotated synchronously when the inner handle 1 is rotated, but not to allow the inner handle 1 to be rotated simultaneously when the clutch mechanism is disengaged when the outer handle 2 is rotated.

Referring to fig. 1, 2b and 4, since the two ends of the square core 3 are respectively connected with the handle head 53 and the inner handle 1 in a synchronous rotation manner, the handle head 53 can be driven to rotate by rotating the inner handle 1. Taking the example of pressing the inner handle 1 downwards in fig. 1, the handle head 53 can be driven to rotate anticlockwise in fig. 4, at this time, the left side surface of the boss 56 abuts against the left side surface of the first limit slot 58, and then the outer handle 2 is pushed to rotate anticlockwise; if the outer handle 2 is pressed downwards in fig. 1, if the clutch mechanism is separated, the left side surface of the first limit groove 58 is far away from the boss 56 and does not drive the handle head 53 to rotate, and the corresponding inner handle 1 also does not rotate.

Under this kind of structural style, if this door handle subassembly is in the back-locking state, because clutch mechanism separates, presses outer handle 2 downwards, can not drive the rotation of handle head 53 and square core 3, outer handle 2 can empty the rotation and can not unblank promptly. In this locked state, one end of the sliding plate 13 is located in the V-shaped groove 81, and pressing the inner handle 1 downward can drive the square core 3, the handle head 53 and the outer handle 2 to rotate anticlockwise, and simultaneously drive the locking member 4, the connecting rod 54 and the unlocking sleeve 52 to rotate, and also drive the locking member 4 to move rightwards, and then drive the connecting rod 54 and the unlocking sleeve 52 to rotate relative to the handle head 53, so that the ball 51 is pushed into the second groove 62 and the first through hole 71, and the closing of the clutch mechanism is realized, that is, the opening of the door is realized, and the release of the lock is also realized. The unlocking device can avoid that a user forgets to unlock the lock when opening the door.

Referring to fig. 7, in this embodiment, a protruding structure with a middle portion extending toward the V-shaped groove 81 is formed at one end of the sliding plate 13 near the fixing seat 8, which can form surface contact in the process of contacting with the V-shaped groove 81, and the sliding plate 13 is easier to separate from the V-shaped groove 81 during unlocking, so that the force required during unlocking can be reduced. Preferably, the protruding structure is V-shaped in the same shape as the V-shaped groove 81.

Further, a rubber ring 83 and a decorative cover 84 are further disposed on the outer periphery of the fixing seat 8 to cover the parts such as the screws on the fixing seat 8, and meanwhile, the appearance of the door handle assembly can be improved. Referring to fig. 8, the fixing base 8 is generally cylindrical, and has a second limiting groove 82 on its outer peripheral surface, and an inner side of the rubber ring 83 is embedded in the second limiting groove 82. Through this second spacing groove 82, the inboard of rubber ring 83 can inlay and establish on fixing base 8's periphery lateral wall to comparatively firm. The decorative cover 84 is of an annular structure, the left side of the decorative cover is open, a through hole slightly larger than the diameter of the neck part of the inner handle shaft is arranged on the right side of the decorative cover, and the decorative cover 84 is sleeved on the periphery of the fixed seat 8 and can cover the outer surface of the whole fixed seat 8. The outer side of the rubber ring 83 abuts against the inner wall of the decorative cover 84, so that the decorative cover 84 is relatively firmly fixed on the outer periphery of the fixing seat 8, and is prevented from falling off.

Further, in this embodiment, a second through hole 72 is further provided at the end face of the outside handle 2, the left end of the unlocking sleeve 52 is provided in this second through hole 72, and a third groove 63 is formed at the left end face of the unlocking sleeve 52 for emergency release of the lock. Specifically, the user can rotate the unlocking sleeve 52 from the outer side of the door relative to the outer handle 2 by using a tool matched with the third groove 63, and then the ball 51 enters the second groove 62 and the first through hole 71, so that the clutch mechanism is closed, that is, the back lock is released.

Example two

In this embodiment, the clutch mechanism may also be realized in the form of a connecting rod 54 and a connecting hole 57. Specifically, referring to fig. 9, the locking member 4 is also axially slidably disposed in the journal portion of the inside handle 1. The clutch mechanism includes a connecting rod 54 and a connecting hole 57. Wherein, the connecting rod 54 is slidingly arranged inside the square core 3 and synchronously rotates with the square core 3, and one end is connected with the locking piece 4; the connection hole 57 is provided in the outer handle 2 at a position opposite to the connection rod 54. Also, the cross sections of the connection rod 54 and the connection hole 57 are non-circular, and when one end of the connection rod 54 is inserted into the connection hole 57, it can be rotated in synchronization with the outside handle 2. Specifically, when the locking member 4 is not in the locking position, one end of the connecting rod 54 is located in the connecting hole 57, and the outer handle 2 and the connecting rod 54 can rotate synchronously; when the locking member 4 is moved to the locking position, one end of the connecting rod 54 is moved out of the connecting hole 57, and at this time, turning the outer handle 2 does not turn the connecting rod 54 and the square core 3, and thus unlocking is not achieved, in other words, the door handle assembly is in the counter-locked state. With this form of clutch mechanism, the basic counter lock function can be realized as well, and the lock member 4 is also provided at the journal portion of the inside handle 1 without affecting the appearance of the inner hand front end visible surface.

Example III

Similar to the second embodiment, the clutch mechanism is also realized in the form of the connecting rod 54 and the connecting hole 57. Specifically, referring to fig. 10, the locking member 4 is also axially slidably provided in the journal portion of the inner handle 1, and the outer end portion thereof is provided in the slide hole 11. The clutch mechanism includes a connecting rod 54 and a connecting hole 57. The connecting rod 54 is slidably disposed inside the square core 3, and the middle part of the connecting rod can rotate relatively to the square core 3, for example, the middle part of the connecting rod is cylindrical or the external dimension of the connecting rod is far smaller than the internal cross-section dimension of the square core 3. The connecting rod 54 is formed at the left end thereof with a connecting portion 59, and the connecting portion 59, the connecting hole 57 and the square core 3 are identical in cross-sectional shape and non-circular, for example, all of which are provided with square cross-sectional shapes in this embodiment.

The other end of the connecting rod 54 is connected to the locking member 4 and can rotate relative to the locking member 4 and slide synchronously in the axial direction. Specifically, a connection block 9 is sleeved on the right end portion of the connection rod 54, the connection block 9 can only rotate relative to the connection rod 54, and when the connection block 9 moves in the axial direction, the connection rod 54 is synchronized therewith. The inner end of the locking member 4 is inserted into the connecting block 9, so that when the user slides the locking member 4, the connecting rod 54 is driven to slide in the axial direction, and the connecting rod 54 is not driven to rotate when rotating. Alternatively, a hole may be formed in the right end portion of the connecting rod 54 along the circumferential direction, and the inner end of the locking member 4 is inserted into the hole, so that the connecting mode of relative rotation and synchronous sliding along the axial direction between the connecting rod 54 and the locking member 4 can be realized.

In this embodiment, when the locking member 4 is not in the locking position, the connecting portion 59 is located in the connecting hole 57 and the square core 3, and the rotating outer handle 2 can rotate the square core 3 through the connecting portion 59 to achieve unlocking. When the locking member 4 slides along the sliding hole 11 to the locking position, i.e. the position shown in fig. 9, the connecting portion 59 is only located in the connecting hole 57, and when the outer handle 2 is rotated, the connecting rod 54 rotates relative to the square core 3, and unlocking cannot be achieved, and when the inner handle 1 is rotated, the square core 3 can be directly rotated, i.e. in the back locking state.

With this form of clutch mechanism, the basic counter lock function can be realized as well, and the lock member 4 is also provided at the journal portion of the inside handle 1 without affecting the appearance of the inner hand front end visible surface.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (11)

1. A door handle assembly, comprising:

An inner handle;

An outer handle;

the square core is provided with two ends respectively arranged in the inner handle and the outer handle, and one end of the square core rotates synchronously with the inner handle;

The clutch mechanism is arranged between the square core and the outer handle and is used for connecting the square core with the outer handle when the square core is closed;

The locking piece is arranged on the journal part of the inner handle in a sliding way and is linked with the clutch mechanism, and when the locking piece slides from one side to the other side, the clutch mechanism is driven to separate, so that the outer handle is disconnected with the square core.

2. The door handle assembly of claim 1 wherein said clutch mechanism comprises:

A ball;

An unlocking sleeve is rotatably arranged at one end, far away from the inner handle, of the outer handle, and a first groove capable of accommodating the ball is formed in the periphery of the unlocking sleeve;

The handle head is of a hollow structure, one end, close to the inner handle, of the outer handle is rotatably arranged, a first through hole through which the ball can pass is formed in the side wall of the handle head, and the square core is inserted into the handle head;

The connecting rod is rotatably arranged in the square core, one end of the connecting rod is provided with a spiral guide hole for inserting the locking piece along the peripheral surface, and the other end of the connecting rod penetrates through the handle head and is inserted into the unlocking sleeve;

The second groove is formed on the inner wall of the outer handle and can accommodate the ball; wherein the method comprises the steps of

One end of the locking piece is inserted into the guide hole, the other end of the locking piece extends out of the shaft neck part, when the locking piece is not positioned at the locking position, the first groove is dislocated with the first through hole, and the ball is positioned in a containing space formed by the second groove and the first through hole; when the locking piece slides to a locking position on the journal part, the connecting rod and the unlocking sleeve are driven to rotate by a preset angle, and the first groove is opposite to the first through hole.

3. The door handle assembly of claim 2 wherein,

One end side surface of the locking piece is abutted against the end of the guide hole.

4. The door handle assembly of claim 2 wherein,

The connecting rod is circumferentially and uniformly provided with two guide holes with the same spiral direction;

Two first grooves are uniformly formed in the unlocking sleeve;

the handle head is uniformly provided with two first through holes;

two second grooves are uniformly formed in the outer handle;

The number of the balls is two.

5. The door handle assembly of claim 2 wherein,

And a sliding plate connected with the locking piece is arranged in the side wall of the inner handle in an axial sliding way.

6. The door handle assembly as recited in claim 5 further comprising:

The fixed seat is sleeved on the periphery of the journal part, and one side surface of the fixed seat is provided with a V-shaped groove opposite to the end surface of the sliding plate;

The first limit groove is arranged on the inner wall of the outer handle;

the boss is arranged on the periphery of the handle head, one side face of the boss is abutted against one side wall of the first limit groove, and the width of the boss in the circumferential direction is smaller than that of the first limit groove; wherein the method comprises the steps of

When the locking piece is in the locking position, one end of the sliding plate is abutted in the V-shaped groove.

7. The door handle assembly as recited in claim 6, wherein,

One end of the sliding plate is provided with a convex structure with the middle part extending towards the V-shaped groove.

8. The door handle assembly as recited in claim 6, wherein,

The decorative cover is sleeved on the periphery of the fixed seat;

The rubber ring is embedded on the outer peripheral side wall of the fixing seat at the inner side, and the outer side is abutted on the inner wall of the decorative cover.

9. The door handle assembly of claim 2 wherein,

The end face of the outer handle is provided with a second through hole;

one end of the unlocking sleeve is arranged in the second through hole, and a third groove is formed in the end face of the unlocking sleeve.

10. The door handle assembly as recited in claim 1, wherein,

The locking piece is arranged on the journal part of the inner handle in an axial sliding way;

The clutch mechanism comprises a connecting rod and a connecting hole, the connecting rod is slidably arranged in the square core and rotates synchronously with the square core, the connecting hole is arranged at the position, opposite to the connecting rod, in the outer handle, the cross sections of the connecting rod and the connecting hole are non-circular, and the locking piece is connected with the connecting rod; wherein the method comprises the steps of

When the locking piece is not positioned at the locking position, one end of the connecting rod is positioned in the connecting hole, and the outer handle and the connecting rod can synchronously rotate; when the locking piece moves to the locking position, one end of the connecting rod is moved out of the connecting hole.

11. The door handle assembly as recited in claim 1, wherein,

The locking piece is arranged on the journal part of the inner handle in an axial sliding way;

The clutch mechanism comprises a connecting rod and a connecting hole, the connecting rod is arranged in the square core in a sliding manner, the connecting hole is arranged in the position, opposite to the connecting rod, of the outer handle, one end of the connecting rod is provided with a connecting part, the cross sections of the connecting part, the connecting hole and the square core are identical in shape and non-circular, and the other end of the connecting rod is connected with the locking piece and can rotate relatively to the locking piece and slide synchronously along the axial direction; wherein the method comprises the steps of

When the locking piece is not positioned at the locking position, the connecting part is positioned in the connecting hole and the square core, and the outer handle and the square core can synchronously rotate; when the locking piece moves to the locking position, the connecting part is only positioned in the connecting hole.