A rear lock-up clutch

Abstract

The utility model discloses a rear lock clutch, including clutch casing and clutch device and jacking device, and clutch device includes clutch knob, reset piece and starting pin, and the edge of reset piece is equipped with the limit gap, and clutch knob is connected with starting pin slidingly, and jacking device includes shell subassembly and push block and push rod, and push block is connected with transmission shaft, and push rod is equipped with the inclined slot, and transmission shaft inserts the inclined slot, and push block is driven to do the sliding direction reciprocating transmission along the sliding direction reciprocating transmission of push rod, and clutch casing is equipped with a push block opening, and push block passes push block opening from inside to outside. The utility model discloses setting up clutch device and jacking device, and through the embedding and separation of starting pin and limit gap, can lock the clutch in the locking state directly and quickly, and clearly defines the locking and free two working conditions of clutch, and the state is clear, and the reliability is high, realizes the convenient indoor manual locking function, and improves user experience and safety.

Description

Technical Field

[0001] This utility model relates to the field of door lock clutch technology, specifically a rear lock clutch. Background Technology

[0002] As people's quality of life continues to improve, smart door locks are becoming increasingly popular. Smart door locks are improvements on traditional mechanical locks, offering greater intelligence and convenience in terms of user security, identification, and management. The door lock clutch is a core transmission component in smart door locks, primarily used to connect or disconnect power transmission to achieve control of the bolt extension and retraction, power transmission, clutch engagement / disengagement switching, and safety protection.

[0003] In modern door locks, the clutch is a key component that allows the outside handle to spin freely and prevents technical unlocking. Existing clutches have the following shortcomings: firstly, the locked state is unreliable, posing a risk of accidental unlocking under vibration or impact; secondly, the transmission connection in the unlocked state is not clearly defined, potentially leading to weak opening or transmission failure; and thirdly, there is a lack of a quick and intuitive mechanical locking method from the inside. Therefore, there is an urgent need for a highly reliable rear-lock clutch with a clearly defined state and support for manual locking. Utility Model Content

[0004] The purpose of this utility model is to provide a rear lock clutch that has the advantages of reliable locking, clear status, and support for manual rear locking, and solves the problems of existing door lock clutches that cannot be quickly locked from behind the door and are inconvenient to operate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rear-lock clutch, comprising a clutch housing and a clutch engagement device and a lifting device installed within the clutch housing. The clutch engagement device includes a clutch knob, a reset plate, and a starting pin. The reset plate has a limiting notch at its edge. The clutch knob is slidably connected to the starting pin, and the starting pin can be slidably inserted into the limiting notch. The lifting device includes a housing assembly and a lever and a push rod movably connected to the housing assembly. The sliding directions of the lever and the push rod are perpendicular to each other. The lever is connected to a drive shaft. The push rod has an inclined slot. The drive shaft is inserted into the inclined slot. The lever reciprocates along the sliding direction, driving the push rod to reciprocate along the sliding direction. The push rod abuts against the starting pin. The clutch housing has a lever opening. The lever passes through the lever opening from the inside to the outside and is located on the rear face of the door lock. The user can manually lock the door by moving the lever.

[0006] Preferably, the clutch device further includes a connecting rod, a washer, a torsion spring, and a retaining ring. The washer is annular. The clutch housing has a connecting rod opening. The connecting rod passes sequentially through the washer, the connecting rod opening, and the reset plate before engaging with the retaining ring. The reset plate is fixedly connected to the connecting rod and rotates synchronously. The torsion spring is sleeved on the outer circumference of the washer. An abutment piece is connected to the edge of the reset plate. An abutment screw is installed on the reset plate. The abutment screw and the abutment piece are located at opposite ends on the reset plate. The two end arms of the torsion spring abut against the abutment screw and the abutment piece, respectively, and also abut against the top ends of the clutch knob.

[0007] Preferably, the clutch knob has an arc-shaped opening on its side, and the end of the abutting screw away from the torsion spring abuts against the arc-shaped opening.

[0008] Preferably, the housing assembly is provided with a lever spring, which extends laterally through the push rod, and both ends of the lever are fixedly connected to the housing assembly, and the drive shaft abuts against the lever spring.

[0009] Preferably, the paddle spring has a stop structure in the middle, the stop structure is "V" shaped, and the drive shaft abuts against the side end of the stop structure.

[0010] Preferably, the push rod is Y-shaped, wherein the side of the push rod that abuts against the starting pin is provided with an arc-shaped end face, and the end of the starting pin that abuts against the push rod is provided with a semi-circular shape.

[0011] Preferably, it also includes a cover plate and a housing that are fitted together, forming a cavity between the cover plate and the housing, and a clutch device and a lifting device are installed in the cavity, wherein the paddle opening is located on the housing, and the housing is the rear end face of the clutch.

[0012] Preferably, an installation screw is installed between the cover plate and the hopper body. The bottom of the cover plate is provided with a plug-in part, the bottom of the hopper body is provided with a plug-in interface, the cover plate is provided with a through hole near the top, and the hopper body is provided with a threaded hole near the top. The threaded hole and the through hole are matched. The plug-in part is inserted into the plug-in interface, and the installation screw passes through the through hole and is threadedly connected to the threaded hole.

[0013] Preferably, the inner end face of the compartment is provided with an arc-shaped protrusion, and the clutch knob is provided with an arc-shaped groove, with the arc-shaped protrusion fitting into the arc-shaped groove.

[0014] Preferably, the clutch housing is provided with two vertical connecting plates, and the two end arms of the torsion spring respectively abut against the two vertical connecting plates.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model, by setting up a clutch device and a lifting device, allows the clutch to be locked in the locked state intuitively and quickly through the engagement and disengagement of the starting pin and the limiting notch, and the door rear lever. It clearly defines the two working states of the clutch: locked and disengaged. The state is clear and the reliability is high, realizing a convenient indoor manual locking function, improving user experience and safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the structure of this utility model. Figure 1 ;

[0019] Figure 3 This is an exploded view of the structure of this utility model. Figure 2 ;

[0020] Figure 4 This is a cross-sectional view of the present invention. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please see Figures 1 to 4 The present invention provides an embodiment of a rear-lock clutch, wherein the clutch housing 1 includes a cover plate 5 and a chamber 6 that are fitted together, and the cavity formed by the fitment of the cover plate 5 and the chamber 6 accommodates and installs a clutch device 2 and a lifting device 3.

[0024] The clutch device 2 is mainly used to realize power transmission and disconnection. The clutch knob 21 serves as the power input end and is linked with the door handle. The reset plate 22 is annular. During assembly, the connecting rod 24 passes through the connecting rod opening 64, washer 25, and composite plate 22 on the compartment 6 in sequence, and is then fixed by the retaining spring 27. The reset plate 22 has an embedded part 224, and the connecting rod 24 has an embedded groove 241 that matches the embedded part 224. When the connecting rod 24 passes through the reset plate 22, the embedded part 22... 4 is sleeved with the embedded groove 241, and the reset piece 22 and the washer 25 are limited between the retaining spring 27 and the inner wall of the compartment 6, so as to realize the fixed connection between the connecting rod 24 and the reset piece 22, and the two can rotate synchronously. The edge of the reset piece 22 is provided with a limiting notch 221, and the starting pin 23 is slidably connected to the clutch knob 21, selectively inserting or disengaging from the limiting notch 221, thereby realizing the switching between the locked and free states of the reset piece 22 and the clutch knob 21, and the connecting rod 24 is linked with the door handle.

[0025] Furthermore, the washer 25 is provided with several limiting protrusions 251, and the edge of the connecting rod opening 64 is provided with several limiting grooves 641. The several limiting protrusions 251 and the several limiting grooves 641 are inserted one by one to realize the fixed connection between the washer 25 and the clutch housing 1. The connecting rod 24 is sleeved in the inner circumferential end face of the washer 25, and the washer 25 ensures that the reset plate 22 and the connecting rod 24 can rotate reliably relative to the clutch housing 1.

[0026] Furthermore, the washer 25 has several sliding protrusions on its end face near the reset piece 22. These sliding protrusions can reduce the contact area between the reset piece 22 and the washer 25, reduce the friction between them, and make the reset piece 22 rotate more smoothly. At the same time, the several sliding protrusions are arranged in a circumferential array. This structure can maintain the axial force between the washer 25 and the reset piece 22, prevent angular deviation during rotation, and ensure the stability of rotation.

[0027] Furthermore, an annular gasket 30 is also fitted on the connecting rod 25. The annular gasket 30 fits the clutch housing 1 and covers several limiting grooves 641, making the overall appearance of the clutch housing 1 neat and beautiful. At the same time, it reduces the entry of dust or foreign objects into the interior from the gap between the connecting rod 24 and the clutch housing 1, preventing dust or foreign objects from affecting the transmission effect of the clutch device.

[0028] The torsion spring 26 is sleeved on the outside of the washer 25, and its two ends support the abutting screw 29 and the abutting plate 28 on the reset plate 22, as well as the two vertical connecting plates 8 on the clutch housing 1. This structure enables the torsion spring 26 to continuously apply the reset torque to the reset plate 22, ensuring that the reset plate 22 can quickly and accurately return to the initial angle in the non-locked state.

[0029] The two arms of the torsion spring 26 abut against the top two ends of the clutch knob 21 respectively. The torsion spring 26 can continuously apply a reset torque to the clutch knob 21, ensuring that the clutch knob 21 can quickly and accurately return to the initial angle in the unlocked state; keeping the door handle at a stable angle for easy rotation by the user.

[0030] When the other end of the abutting screw 29 abuts against the arc-shaped opening 211 on the side of the clutch knob 21, and the starting pin 23 is not inserted into the limiting notch 221 of the reset piece 22, the reset piece 22 and the clutch knob 21 are in two states of being free. When the clutch knob 21 rotates forward, the arc-shaped opening 211 moves away from the abutting screw 29, and the clutch knob 21 is always in a free state. The door handle rotates continuously without driving the reset piece 22 and the connecting rod 24 to rotate. When the clutch knob 21 rotates in reverse, the arc-shaped opening 211 abuts against the abutting screw 29 and drives the reset piece 22 and the connecting rod 24 to rotate in the opposite direction, realizing operations such as locking the lock cylinder.

[0031] The lifting device 3 has a housing assembly 31 fixed inside the clutch. The housing assembly 31 includes a front housing 311 and a rear housing 312 that fit together. The rear housing 312 has a sliding opening 313 through which the lever 32 passes. The lever 32 passes from the inside out through the sliding opening 313 and the lever opening 61 on the housing 6, exposing the rear end face of the clutch lock. The lever 32 also has a retaining edge 314 that abuts against the inner wall of the rear housing 312, confining the lever 32 within the housing assembly 31. The lever 32 is connected to a drive shaft 34, which is inserted into the inclined slot 331 of the push rod 33. When the user moves the lever 32, the drive shaft... The shaft 34 slides within the inclined slot 331, converting the lateral movement of the lever 32 into the longitudinal movement of the push rod 33. To ensure a good operating feel and prevent reset, the lever spring 35 extends laterally through the push rod 33 and is fixed to the housing assembly 31. The drive shaft 34 can abut against both sides of the V-shaped stop structure 351 in the middle of the lever spring 35. This stop structure 351 not only provides a clear sense of the center position for the lever 32, but also allows the drive shaft 34 to slide against the lever spring 35 and move from the stop structure 351 to the other side when the lever 32 moves from one end to the other. This structure prevents the lever 32 from sliding and failing to stably lift the push rod.

[0032] The push rod 33 is designed in a "Y" shape, with an arc-shaped end face at its front end, which abuts against the end of the semi-circular starter pin 23. This fit effectively reduces contact friction, making the rotation and pushing process smoother.

[0033] In addition, the arc-shaped protrusion 65 on the inner end face of the compartment 6 fits into the arc-shaped groove 212 on the clutch knob 21. This structure guides and constrains the rotation trajectory of the clutch knob 21, ensuring that its movement is smooth and without deviation.

[0034] In this embodiment, the inclined slot 331 is inclined downwards from left to right. When manual locking from the inside is required, the user moves the lever 32 inwards to the rightmost end, and the drive shaft 34 moves to the bottom of the inclined slot 331. The lever 32, through the cooperation of the drive shaft 34 and the inclined slot 331, drives the push rod 33 to move upwards. The push rod 33 pushes the starting pin 23, causing the starting pin 23 to embed into the limiting notch 221 of the reset plate 22. At this time, the reset plate 22 and the clutch knob 21 are rigidly connected through the starting pin 23, and the clutch enters the locked state. In this state, turning the door handle outside drives the clutch knob 21, and power is transmitted through the door handle. The activation pin 23 transmits power to the reset plate 22, which in turn drives the internal mechanism of the lock body to achieve reliable door opening. When the user moves the toggle block 32 to the leftmost end, the transmission shaft 34 is displaced to the top of the inclined slot 331, causing the push rod 33 to slide downward under the action of gravity. The activation pin 23 loses the thrust of the push rod 33 and disengages from the limit notch 221. At this time, the reset plate 22 quickly resets under the torque of the torsion spring 26, and the clutch enters a free state. In this state, turning the door handle can only make the clutch knob 21 rotate freely and cannot drive the reset plate 22. The power transmission is cut off, and the door lock cannot be opened, thus achieving effective security protection.

[0035] Furthermore, when the clutch is installed in the door lock, other automated drive components can be intelligently controlled to drive the push rod 33, thereby locking the reset plate 22 and the clutch knob 21, thus enabling the door to be opened from the outside. After a preset time, the automated drive components drive the push rod 33 to reset, allowing the clutch to enter a free state. This structure can be manually locked by tightening the clutch, enabling convenient entry and exit from the inside and outside of the door in daily life, while also having the effect of intelligent unlocking.

[0036] Furthermore, the door lock can be unlocked by using a key in conjunction with the lock cylinder.

[0037] During assembly, the clutch device 2 and the lifting device 3 are positioned and installed in the cavity. The cover plate 5 and the chamber 6 are initially positioned by the cooperation of the plug part 51 and the plug interface 62. The mounting screw 7 is screwed into the threaded hole 63 on the chamber 6 after passing through the through hole 52 on the cover plate 5, thus forming a sealed assembly cavity, providing a stable and reliable working environment for the internal mechanism.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rear lock-up clutch, comprising a clutch housing and a clutch engagement device and a jacking device installed within the clutch housing, characterized in that: The clutch device includes a clutch knob, a reset plate, and a starter pin. The reset plate has a limiting notch at its edge. The clutch knob is slidably connected to the starter pin, and the starter pin can be slidably inserted into the limiting notch. The lifting device includes a housing assembly and a lever and a push rod movably connected to the housing assembly. The sliding directions of the lever and the push rod are perpendicular to each other. The lever is connected to a drive shaft. The push rod has an inclined slot. The drive shaft is inserted into the inclined slot. The lever reciprocates along the sliding direction, driving the push rod to reciprocate along the sliding direction. The push rod abuts against the starter pin. The clutch housing has a lever opening, and the lever passes through the lever opening from the inside to the outside.

2. A rear lock-up clutch according to claim 1, characterized in that: The clutch device also includes a connecting rod, washers, a torsion spring, and a retaining ring. The washers are all annular. The clutch housing has a connecting rod opening. The connecting rod passes through the washer, the connecting rod opening, and the reset plate in sequence before engaging with the retaining ring. The reset plate is fixedly connected to the connecting rod and rotates synchronously. The torsion spring is sleeved on the outer circumference of the washer. An abutment piece is connected to the edge of the reset plate. An abutment screw is installed on the reset plate. The abutment screw and the abutment piece are located at opposite ends on the reset plate. The two end arms of the torsion spring abut against the abutment screw and the abutment piece, respectively. The two end arms of the torsion spring also abut against the top ends of the clutch knob.

3. A rear lock-up clutch according to claim 2, characterized in that: The clutch knob has an arc-shaped opening on its side, and the end of the screw away from the torsion spring abuts against the arc-shaped opening.

4. A rear lock-up clutch according to claim 1, characterized in that: The housing assembly contains a lever spring, which extends laterally through the push rod. Both ends of the lever are fixedly connected to the housing assembly, and the drive shaft abuts against the lever spring.

5. A rear lock-up clutch according to claim 4, characterized in that: The paddle spring has a stop structure in the middle, which is "V" shaped, and the drive shaft abuts against the side end of the stop structure.

6. A rear lock-up clutch according to any one of claims 1 to 5, characterized in that: The push rod is Y-shaped, with an arc-shaped end face on the side of the push rod that abuts against the starting pin, and a semi-circular shape on the end of the starting pin that abuts against the push rod.

7. A rear lock-up clutch according to any one of claims 1 to 5, characterized in that: It also includes a cover plate and a housing that are fitted together, forming a cavity between the cover plate and the housing. The clutch device and the lifting device are installed in the cavity. The paddle opening is located on the housing, and the housing is the rear end face of the clutch.

8. A rear lock-up clutch according to claim 7, characterized in that: The cover plate and the hopper body are also equipped with mounting screws. The bottom of the cover plate is provided with a plug-in part, the bottom of the hopper body is provided with a plug-in interface, the cover plate is provided with a through hole near the top, and the hopper body is provided with a threaded hole near the top. The threaded hole and the through hole are matched. The plug-in part is inserted into the plug-in interface, and the mounting screw passes through the through hole and is threadedly connected to the threaded hole.

9. A rear lock-up clutch according to claim 7, characterized in that: The inner end face of the compartment is provided with an arc-shaped protrusion, and the clutch knob is provided with an arc-shaped groove, with the arc-shaped protrusion fitting into the arc-shaped groove.

10. A rear lock-up clutch according to claim 2, characterized in that: The clutch housing is provided with two vertical connecting plates, and the two end arms of the torsion spring respectively abut against the two vertical connecting plates.

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