Clutch mechanism of door lock

Abstract

The utility model discloses a clutch mechanism of a door lock, which comprises a connecting seat, a clutch piece, a clutch pin and a mechanical lock cylinder, one end of the connecting seat is fixedly connected with a handle, the other end of the connecting seat is provided with a mounting groove and a bolt channel communicated with the mounting groove, the clutch piece comprises a clutch part placed in the mounting groove, the periphery of the clutch part is provided with a pin insertion hole, and the mechanical lock cylinder is arranged in the pin insertion hole. An electric push rod device is arranged on the periphery of the bolt channel, a push plate is arranged at the power output end of the electric push rod device, the clutch pin is sleeved with a reset spring and penetrates through the bolt channel, and the electric push rod device is used for pushing the clutch pin into the bolt channel; the mechanical lock cylinder comprises an output rod capable of being driven by a key to move linearly, the output rod is connected with the push plate through a transmission piece, and the output rod can push the clutch pin into the pin insertion hole through the push plate. A user can achieve clutch in a mechanical or electric mode, when one mode loses efficacy, the other mode can still work normally, and reliability and stability of clutch of the door lock are improved.

Description

Technical Field

[0001] This utility model relates to the field of lock equipment, and in particular to a door lock clutch mechanism. Background Technology

[0002] In the prior art, door locks with handles use a clutch mechanism to switch between mechanically linked and non-linked states between the handle and the latch. For example, Chinese Patent CN211691894U discloses a clutch that uses an electrically driven mechanism to press a clutch pin, thereby engaging the handle and the latch. Since this clutch relies on an electric method to achieve its clutch function, if the electric drive mechanism malfunctions, it cannot properly engage or disengage, causing the door lock to be unable to open or close normally.

[0003] In view of this, the present invention proposes a door lock clutch mechanism to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned technology, this utility model provides a door lock clutch mechanism that can drive the clutch pin both electrically and mechanically. When one method fails, the other method can still work normally, thereby improving the reliability and stability of the door lock clutch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A door lock clutch mechanism includes a connecting seat, a clutch component, a clutch pin, and a mechanical lock cylinder. One end of the connecting seat is fixedly connected to a handle, and the other end of the connecting seat has a mounting groove and a pin channel communicating with the mounting groove. The clutch component includes a clutch part placed in the mounting groove, and a pin insertion hole is provided on the outer periphery of the clutch part. An electric push rod device is provided on the outer periphery of the pin channel. The power output end of the electric push rod device is a push plate. The clutch pin is fitted with a return spring and passes through the pin channel. The electric push rod device is used to push the clutch pin into the pin channel. The mechanical lock cylinder includes an output rod that can move linearly under the drive of a key. The output rod is connected to the push plate through a transmission component. The output rod can push the clutch pin into the pin insertion hole through the push plate.

[0007] Preferably, the outer surface of the clutch pin is provided with an annular boss located in the pin channel, the opening width at both ends of the pin channel is smaller than the outer diameter of the annular boss, and the opening width at both ends of the pin channel is not smaller than the outer diameter of the clutch pin.

[0008] Preferably, the clutch mechanism consists of a connecting seat, a clutch pin, an electric push rod device, and a mechanical lock cylinder arranged from top to bottom.

[0009] Preferably, the transmission component includes a contact portion for pushing the push plate, a connecting portion for connecting to the output rod, and a connecting rod connecting the contact portion and the connecting portion, wherein the connecting rod extends in the vertical direction.

[0010] Preferably, the connecting part is provided with a U-shaped opening, and the output rod includes a positioning head, a buffer section, and a support platform from top to bottom. The diameter of the positioning head is larger than the diameter of the U-shaped opening, the diameter of the buffer section is smaller than the diameter of the U-shaped opening, the buffer section passes through the U-shaped opening, and the buffer section is fitted with a buffer spring. The outer diameter of the buffer spring is smaller than the outer diameter of the support platform.

[0011] Preferably, the contact portion is a flat plate structure with the push plate parallel to it.

[0012] Preferably, the clutch mechanism further includes a fixed base, and the electric push rod device is mounted on the fixed base.

[0013] Preferably, the mounting base is provided with a mounting hole for the connecting rod to pass through.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model is equipped with an electric push rod device and a mechanical lock cylinder. The electric push rod device can electrically drive the push plate, and the mechanical lock cylinder can be connected to the push plate through a transmission component. Both can push the clutch pin into the pin insertion hole to realize the engagement of the clutch component and the connecting seat, giving users more clutch options. At the same time, when one method fails, the other method can still work normally, improving the reliability and stability of the door lock clutch.

[0016] 2. A buffer spring is fitted on the output rod. The output rod drives the transmission components and the push plate of the electric push rod device through the buffer spring, which can reduce the impact force on the electric push rod device. At the same time, when there is a deviation in the position angle of the clutch part, causing the pin insertion hole to not align with the pin channel, the clutch pin cannot be inserted into the pin insertion hole. The push plate can only push the clutch pin against the outer wall of the clutch component. The outer wall of the clutch component has a reaction force on the clutch pin, which makes the clutch pin exert a large squeezing force on the push plate. The buffer spring can buffer the squeezing force of the clutch pin on the push plate, reducing damage to the electric push rod device.

[0017] 3. The connecting seat, clutch pin, electric push rod device, and mechanical lock cylinder are arranged sequentially from top to bottom to reduce the lateral space occupied.

[0018] 4. The mounting base is provided with mounting holes for the connecting rod to pass through, which improves the stability of the connecting rod when it moves up and down, and at the same time makes the door lock structure more tightly connected. Attached Figure Description

[0019] Figure 1 This utility model relates to the clutch mechanism of a door lock. Figure 1 ;

[0020] Figure 2 This utility model relates to the clutch mechanism of a door lock. Figure 2 ;

[0021] Figure 3 This is an exploded schematic diagram of the mechanical lock cylinder of this utility model;

[0022] The implementation, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0024] Reference Figures 1-3 This utility model provides an embodiment of a door lock clutch mechanism.

[0025] A door lock clutch mechanism includes a connecting seat 1, a clutch component 2, a clutch pin 3, and a mechanical lock cylinder 4. One end of the connecting seat 1 is fixedly connected to a handle 5, and the other end of the connecting seat 1 is provided with a mounting groove 11 and a pin channel 12 communicating with the mounting groove 11. The clutch component 2 includes a clutch part 21 placed in the mounting groove 11, and a pin insertion hole 22 is provided on the outer periphery of the clutch part 21. An electric push rod device 6 is provided on the outer periphery of the pin channel 12. The power output end of the electric push rod device 6 is a push plate 61. The clutch pin 3 is fitted with a return spring 31 and passes through the pin channel 12. The electric push rod device 6 is used to push the clutch pin 3 into the pin channel 12. The mechanical lock cylinder 4 includes an output rod 41 that can move linearly under the drive of a key. The output rod 41 is connected to the push plate 61 through a transmission component 7. The output rod 41 can push the clutch pin 3 into the pin insertion hole 22 through the push plate 61.

[0026] like Figure 1 As shown, an annular boss 32 is provided on the outer side of the clutch pin 3 within the pin channel 12. The opening width at both ends of the pin channel 12 is smaller than the outer diameter of the annular boss 32, and the opening width at both ends of the pin channel 12 is not smaller than the outer diameter of the clutch pin 3, which can prevent the clutch pin 3 from disengaging from the pin channel 12.

[0027] The existing door lock handle 5 is located at the top of the door lock, making it easy to turn downwards. In this utility model, the connecting seat 1, clutch pin 3, electric push rod device 6, and mechanical lock cylinder 4 are arranged sequentially from top to bottom, so that the handle 5 connected to the connecting seat 1 is located at the top of the door lock, which conforms to the user's usage habits. At the same time, the spatial arrangement of the connecting seat 1, clutch pin 3, electric push rod device 6, and mechanical lock cylinder 4 is optimized, reducing the overall size of the door lock.

[0028] The transmission component 7 includes a contact portion 71 for pushing the push plate 61, a connecting portion 72 for connecting to the output rod 41, and a connecting rod 73 connecting the contact portion 71 and the connecting portion 72, the connecting rod 73 extending in the vertical direction.

[0029] like Figure 2 As shown, the connecting part 72 has a U-shaped opening 74. The output rod 41 includes, from top to bottom, a positioning head 411, a buffer section 412, and a support platform 413. The diameter of the positioning head 411 is larger than the diameter of the U-shaped opening 74, while the diameter of the buffer section 412 is smaller than the diameter of the U-shaped opening 74. The buffer section 412 passes through the U-shaped opening 74 and is fitted with a buffer spring 414. The outer diameter of the buffer spring 414 is smaller than the outer diameter of the support platform 413. The buffer spring 414 is located between the connecting part 72 and the support platform 413. When the output rod 41 is driven upward using a key, the support platform 413 moves upward together with the output rod 41. The support platform 413 pushes the buffer spring 414, which in turn pushes the connecting part 72, ultimately enabling the transmission component 7 to push the push plate 61, thereby reducing the impact force on the electric push rod device 6.

[0030] The contact part 71 is a flat plate structure parallel to the push plate 61, which can increase the contact area between the contact part 71 and the push plate 61, so as to stably push the push plate 61.

[0031] The clutch mechanism also includes a fixed base 8, on which the electric push rod device 6 is mounted. The fixed base 8 is provided with a mounting hole 81, through which the connecting rod 73 passes. Under the constraint of the mounting hole 81, the connecting rod 73 moves more stably up and down, while making the door lock structure more tightly connected.

[0032] The clutch 2 is typically connected to the latch structure of the door lock (not shown in the attached diagram).

[0033] The working principle of the electrically controlled clutch is as follows: First, the electric push rod device 6 drives the push plate 61 to move upward. The push plate 61 pushes the clutch pin 3 into the pin insertion hole 22, realizing the engagement of the clutch component 2 with the connecting seat 1, thereby enabling the rotating handle 5 to drive the locking tongue to move. Simultaneously with the clutch pin 3 being pushed into the pin insertion hole 22, the return spring 31 is compressed, generating a restoring force. When the electric push rod device 6 stops pushing the clutch pin 3, the restoring force of the return spring 31 causes the clutch pin 3 to disengage from the pin insertion hole 22, disengaging the clutch component 2 from the connecting seat 1, and the handle 5 and locking tongue no longer move together.

[0034] The working principle of mechanical clutch control is as follows: First, the key is inserted into the mechanical lock cylinder and rotated, thereby driving the output rod 41 to move upward. The support platform 413 moves upward together with the output rod 41. The support platform 413 pushes the buffer spring 414, and the buffer spring 414 pushes the connecting part 72, causing the transmission part 7 to move upward. The contact part 71 pushes the push plate 61 upward, and the push plate 61 pushes the clutch pin 3 into the pin insertion hole 22, so that the clutch part 2 and the connecting seat 1 are engaged.

[0035] This invention provides users with more clutch options, and when one method fails, another method can still work normally, thus improving the reliability and stability of the door lock clutch.

[0036] Meanwhile, due to the movement of the locking tongue structure, the clutch 2 rotates, and sometimes the position angle of the clutch part 21 deviates, causing the pin insertion hole 22 to fail to align with the pin channel 12. In this case, neither the electric push rod device 6 nor the mechanical lock cylinder can push the clutch pin 3 into the pin insertion hole 22. The push plate 61 can only press the clutch pin 3 against the outer wall of the clutch part 2, resulting in a significant reaction force from the outer wall of the clutch part 2 on the clutch pin 3, causing the clutch pin 3 to exert a large compressive force on the push plate 61. The buffer spring 414 of this invention can buffer the compressive force of the clutch pin 3 on the push plate 61, reducing damage to the electric push rod device 6.

[0037] The electric push rod device 6 of this utility model is a conventional device in the field of door lock products. It can be referred to as the electronic lock clutch mechanism in Chinese Patent No. CN106968521A.

[0038] like Figure 3 As shown, the mechanical lock cylinder 4 also includes a rotating shaft 42 and a lock cylinder housing 43. The lock cylinder housing 43 has a shaft channel 431 extending vertically, through which the rotating shaft 42 passes. A keyhole 421 is provided at the front end of the rotating shaft 42. The outer side of the rotating shaft 42 has a protruding ring 422 located below the shaft channel 431 and an annular groove 423 located behind the shaft channel 431. The outer diameter of the protruding ring 422 is larger than the inner diameter of the shaft channel 431. An arc-shaped fixing member 424 is engaged in the annular groove 423. The outer diameter of the arc-shaped fixing member 424 is larger than the inner diameter of the shaft channel 431. A groove is provided at the upper end of the rotating shaft 42, into which the lower end of the output rod 41 is inserted. The rotating shaft 42 has an arc-shaped hole 425, and a guide post 415 is provided on the outer wall of the output rod 41, passing through the arc-shaped hole 425. When the key is inserted into the keyhole 421 and turned, the key drives the rotating shaft 42 to rotate around the shaft, and the rotating shaft 42 drives the output rod 41 to move in the up and down direction through the transmission structure.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A clutch mechanism for a door lock, characterized in that, The system includes a connecting seat (1), a clutch component (2), a clutch pin (3), and a mechanical lock cylinder (4). One end of the connecting seat (1) is fixedly connected to a handle (5), and the other end of the connecting seat (1) is provided with a mounting groove (11) and a pin channel (12) communicating with the mounting groove (11). The clutch component (2) includes a clutch part (21) placed in the mounting groove (11), and a pin insertion hole (22) is provided on the outer periphery of the clutch part (21). An electric push rod device (6) is provided on the outer periphery of the pin channel (12). The power output end of the device (6) is a push plate (61). The clutch pin (3) is fitted with a return spring (31) and passes through the pin channel (12). The electric push rod device (6) is used to push the clutch pin (3) into the pin channel (12). The mechanical lock cylinder (4) includes an output rod (41) that can move linearly under the drive of a key. The output rod (41) is connected to the push plate (61) through a transmission component (7). The output rod (41) can push the clutch pin (3) into the pin insertion hole (22) through the push plate (61).

2. The clutch mechanism of a door lock according to claim 1, characterized in that, The outer surface of the clutch pin (3) is provided with an annular boss (32) located in the pin channel (12). The opening width at both ends of the pin channel (12) is smaller than the outer diameter of the annular boss (32), and the opening width at both ends of the pin channel (12) is not smaller than the outer diameter of the clutch pin (3).

3. The clutch mechanism of a door lock according to claim 1, characterized in that, The components arranged from top to bottom are: connecting seat (1), clutch pin (3), electric push rod device (6), and mechanical lock cylinder (4).

4. The clutch mechanism of a door lock according to claim 3, characterized in that, The transmission component (7) includes a contact portion (71) for pushing the push plate (61), a connecting portion (72) for connecting to the output rod (41), and a connecting rod (73) connecting the contact portion (71) and the connecting portion (72), the connecting rod (73) extending in the vertical direction.

5. The clutch mechanism of a door lock according to claim 4, characterized in that, The connecting part (72) is provided with a U-shaped opening (74). The output rod (41) includes a positioning head (411), a buffer section (412), and a support platform (413) from top to bottom. The diameter of the positioning head (411) is larger than the diameter of the U-shaped opening (74). The diameter of the buffer section (412) is smaller than the diameter of the U-shaped opening (74). The buffer section (412) passes through the U-shaped opening (74) and is fitted with a buffer spring. The outer diameter of the buffer spring (414) is smaller than the outer diameter of the support platform (413).

6. The clutch mechanism of a door lock according to claim 4, characterized in that, The contact part (71) is a flat plate structure parallel to the push plate (61).

7. The clutch mechanism of a door lock according to claim 4, characterized in that, It also includes a fixed base (8), on which the electric push rod device (6) is mounted.

8. The clutch mechanism of a door lock according to claim 7, characterized in that, The mounting base (8) is provided with mounting holes (81) for the connecting rod (73) to pass through.

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