A smart door lock clutch that can be installed in both directions

Abstract

This utility model discloses a reversible smart door lock clutch, comprising a cover plate, a clutch housing, and a clutch transmission device. The clutch housing has an open front and is hollow inside. The cover plate is fixed to the opening of the clutch housing, and clearance spaces are provided at the four corners of the cover plate. The clutch housing includes an integral shell plate, side plates, and corner bending sections. The side plates have four pieces, each bent from the perimeter of the shell plate towards the cover plate. The corner bending sections have four pieces, each bent horizontally inward from the upper and lower ends of the left and right side plates, parallel to the shell plate. The corner bending sections are located in the clearance spaces of the cover plate. Each corner bending section has a screw mounting hole, and the four corners of the shell plate have through holes corresponding to the screw mounting holes. The clutch housing of this utility model has an integral structure with high structural strength. The entire clutch can be installed on the front or rear shell of the smart door lock using screws, allowing the clutch to be installed in either direction.

Description

Technical Field

[0001] This utility model relates to the field of door lock clutch technology, and more specifically, to an intelligent door lock clutch that can be installed in both directions. 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] The structure of a traditional door lock clutch is generally as follows: Figure 1 As shown, it may include a cover plate, a clutch housing, and a clutch transmission device. The cover plate is installed on the front of the clutch housing, and screw mounting holes are provided at the four corners of the cover plate. However, due to its structural design, the installation direction of this type of door lock clutch is usually fixed in the forward direction only. If it needs to be installed in reverse, due to its structural limitations, a specific model of clutch needs to be replaced, which increases the installation complexity and cost. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a reversible intelligent door lock clutch that can be installed in both directions, has high structural strength, and high transmission efficiency, so as to meet diverse installation needs.

[0005] To achieve the above objectives, this utility model provides a reversible smart door lock clutch, comprising a cover plate, a clutch housing, and a clutch transmission device. The clutch housing has an opening on its front and is hollow inside. The cover plate is fixedly installed at the opening on the front of the clutch housing. The clutch transmission device is installed between the cover plate and the clutch housing. The cover plate has clearance spaces at its four corners. The clutch housing comprises an integral shell plate, side plates, and corner bending sections. The side plates have four pieces that are bent from the periphery of the shell plate towards the cover plate. The corner bending sections have four pieces that are bent horizontally inward from the upper and lower ends of the left and right side plates and are arranged parallel to the shell plate. The corner bending sections are located at the four clearance spaces of the cover plate. Each corner bending section has a screw mounting hole. The four corners of the shell plate have through holes corresponding to the screw mounting holes.

[0006] Preferably, the bottom ends of both sides of the cover plate are provided with vertically bent hooks, and two through holes on the clutch housing located at the lower part of the shell plate allow the hooks to pass through and engage, thereby achieving a fixed connection between the cover plate and the clutch housing in the axial direction.

[0007] Preferably, the diameter of the through hole in the clutch housing is greater than the diameter of the corresponding screw mounting hole.

[0008] Preferably, the clutch transmission device includes a connecting shaft, a retaining ring, a bearing, a washer, a clutch assembly, a curved push rod, and a motor drive assembly. The clutch assembly includes a clutch knob, a reset plate, a reset torsion spring, a starter pin, and a compression spring. The reset plate is installed between the connecting shaft and the clutch knob. The clutch knob has arc-shaped openings on both sides. One side of the reset plate extends vertically towards the connecting shaft with an abutment piece. The horizontal height of the abutment piece is the same as the horizontal height of the top surface of the arc-shaped opening. The other side of the reset plate is fixedly connected to an abutment screw. The abutment piece and the abutment screw are respectively located in the two arc-shaped openings of the clutch knob. A circular hole is formed in the middle of the reset plate, and a receiving groove is formed at the front end of the clutch knob. The rear end has a square hole. The locking end of the connecting shaft passes through the round hole and is fixedly connected to the reset plate by a retaining spring, with its protruding part located in the receiving groove. The inner wall of the round hole of the reset plate has locking protrusions at both ends, and the locking end has a locking groove that engages with the locking protrusions. The bearing and the washer are both sleeved on the locking end. The bearing is located between the reset plate and the washer. The reset torsion spring is sleeved on the bearing. The support arms on both sides of the reset torsion spring abut against the abutment screw, the abutment plate, and the top surface of the arc-shaped opening groove, respectively. The upper and lower edges of the reset plate have grooves. The starting pin is movably installed in the lower hole of the clutch knob by a compression spring and is located below the bottom groove of the reset plate. The motor drive assembly is connected to the bottom of the curved push rod.

[0009] Preferably, the clutch transmission device further includes a limiting screw, a first fixing hole is provided at the top center of the clutch housing, a second fixing hole corresponding to the first fixing hole is provided at the top center of the cover plate, and the limiting screw is fixedly connected between the first fixing hole and the second fixing hole and located below the top groove of the reset plate.

[0010] Preferably, the motor drive assembly includes a drive motor, a driving gear, a driven gear, a drive worm, and a drive spring. The drive motor is fixedly installed below the curved push rod. The driving gear is connected to the output shaft of the drive motor and is located at the bottom of the drive motor. The driven gear meshes with the driving gear. The drive worm is fixedly inserted into the middle of the driven gear and passes through the mounting groove at the bottom of the curved push rod. The drive spring is sleeved on the drive worm and located in the mounting groove. The drive motor can drive the drive worm to rotate and compress the drive spring through the driving gear and the driven gear, thereby driving the curved push rod to move upward.

[0011] Preferably, the system also includes a slot cover assembly, which includes a front slot cover and a rear slot cover. The motor drive assembly is installed between the front slot cover and the rear slot cover, and the front slot cover and the rear slot cover are interlocked and located between the cover plate and the clutch housing.

[0012] Preferably, the motor drive assembly further includes a wire for electrical connection to an external PCB board. One end of the wire is electrically connected to the drive motor, and the other end of the wire passes through the slot cover assembly and the clutch housing in sequence, extends upward into the side notch of one of the through holes, and then exits through the wire opening slot at the top of the clutch housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model features a novel and rationally designed structure. The clutch housing's shell plate, side plate, and corner bends are integrated into a single unit. Screw mounting holes are located on the corner bends at the four corners of the cover plate on the front of the clutch housing. Due to the high structural strength of the clutch housing, the entire door lock clutch can be installed on the front or rear shell of the smart door lock using screws, allowing for reversible installation. This solves the installation direction limitations of traditional door lock clutches, offering advantages such as convenient installation, strong versatility, and good stability. It meets diverse installation needs, significantly improves installation efficiency, and reduces maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the background technology provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the reversible smart door lock clutch provided in this embodiment of the utility model;

[0018] Figure 3 This is an exploded schematic diagram of the reversible smart door lock clutch provided in this embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the clutch housing of the reversible smart door lock clutch provided in this embodiment of the invention. Figure 1 ;

[0020] Figure 5This is a schematic diagram of the clutch housing of the reversible smart door lock clutch provided in this embodiment of the invention. Figure 2 ;

[0021] Figure 6 This is an exploded schematic diagram of the clutch transmission device of the reversible smart door lock clutch provided in this embodiment of the utility model;

[0022] Figure 7 This is an exploded view of the clutch assembly of a reversible smart door lock clutch provided in this embodiment of the invention. Figure 1 ;

[0023] Figure 8 This is an exploded view of the clutch assembly of a reversible smart door lock clutch provided in this embodiment of the invention. Figure 2 ;

[0024] Figure 9 This is a schematic diagram of the upright installation state of the reversible smart door lock clutch provided in this embodiment of the utility model;

[0025] Figure 10 This is a schematic diagram of the reverse-installed state of the intelligent door lock clutch that can be installed in both directions, provided in an embodiment of this utility model. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please refer to Figure 2 The present invention provides an intelligent door lock clutch that can be installed in both directions, including a cover plate 41, a clutch housing 42, and a clutch transmission device, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0028] like Figure 2 and Figure 3 As shown, the front of the clutch housing 42 may have an opening and be hollow inside. The cover plate 41 is fixedly installed at the opening position on the front of the clutch housing 42, and the clutch transmission device is installed between the cover plate 41 and the clutch housing 42.

[0029] like Figure 4 and Figure 5As shown, specifically, the cover plate 41 can be provided with clearance spaces at its four corners. The clutch housing 42 includes an integral shell plate 421, a side plate 422, and corner bending portions 423. The side plate 422 has four pieces that are bent from the periphery of the shell plate 421 toward the cover plate 41. The corner bending portions 423 have four pieces that are bent horizontally inward from the upper and lower ends of the left and right side plate portions 422 and are arranged parallel to the shell plate 421. The corner bending portions 423 are located at the four clearance spaces of the cover plate 41. Each corner bending portion 423 has a screw mounting hole 4231. The four corners of the shell plate 421 have through holes 4211 corresponding to the screw mounting holes 4231.

[0030] Specifically, the diameter of the through hole 4211 in the clutch housing 42 can be greater than the diameter of the corresponding screw mounting hole 4231.

[0031] The clutch housing 42 is enhanced in structural strength and installation versatility through the integrated shell plate 421, side plate 422 and corner bending portion 423. The clearance space at the four corners of the cover plate 41 corresponds to the corner bending portion 423 of the clutch housing 42, which can avoid installation interference. The cover plate 41 and the clutch housing 42 together form a closed space, which can protect the internal clutch transmission device and allow screws to pass through the screw mounting holes from both directions for fixing.

[0032] Furthermore, the bottom ends of both sides of the cover plate 41 may be provided with vertically bent hooks 411, and the two through holes 4211 on the clutch housing 42 located at the lower part of the shell plate 421 can allow the hooks 411 to pass through and engage, thereby achieving a fixed connection between the cover plate 41 and the clutch housing 42 in the axial direction.

[0033] like Figures 6 to 8As shown, the clutch transmission device may include a connecting shaft 11, a snap ring 12, a bearing 13, a washer 14, a clutch assembly 43, a curved push rod 44, and a motor drive assembly. The clutch assembly 43 includes a clutch knob 431, a reset plate 432, a reset torsion spring 433, a starter pin 434, and a compression spring 435. The reset plate 432 is installed between the connecting shaft 11 and the clutch knob 431. The clutch knob 431 has arc-shaped opening slots 4311 on both sides, and the reset plate 432 has one side... A contact piece 4321 extends vertically toward the connecting shaft 11. The horizontal height of the contact piece 4321 is the same as the horizontal height of the top surface of the arc-shaped opening groove 4311. A contact screw 4322 is fixedly connected to the other side of the reset piece 432. The contact piece 4321 and the contact screw 4322 are respectively located in the two arc-shaped opening grooves 4311 of the clutch knob 431. A round hole 4320 is opened in the middle of the reset piece 432. A receiving groove is opened at the front end of the clutch knob 431 and thereafter... The end of the connecting shaft 11 has a square hole 4312. After passing through the round hole 4320, the locking end of the connecting shaft 11 is fixedly connected to the reset piece 432 by the snap ring 12, and its protruding part is located in the receiving groove. The inner wall of the round hole 4320 of the reset piece 432 has snap protrusions 4323 at both ends. The locking end has a snap groove 111 that engages with the snap protrusions 4323. The bearing 13 and the washer 14 are both sleeved on the locking end. The bearing 13 is located between the reset piece 432 and the washer 14. The reset torsion spring 433 is sleeved on the... On the bearing 13, the support arms on both sides of the reset torsion spring 433 abut against the top surface of the abutment screw 4322, the abutment piece 4321, and the arc-shaped opening groove 4311, respectively. The upper and lower edges of the reset piece 432 are provided with grooves 4324. The start pin 434 is movably installed in the hole 4313 at the bottom of the clutch knob 431 through the compression spring 435 and is located below the bottom groove 4324 of the reset piece 432. The motor drive assembly is connected to the bottom of the curved push rod 44.

[0034] Specifically, in order to limit the rotation range of the clutch knob 431 and prevent it from being over-twisted, the clutch transmission device may also include a limiting screw 46. A first fixing hole 425 is provided at the top center of the clutch housing 42, and a second fixing hole 412 corresponding to the first fixing hole 425 is provided at the top center of the cover plate 41. The limiting screw 46 is fixedly connected between the first fixing hole 425 and the second fixing hole 412 and is located below the top groove 4324 of the reset plate 432.

[0035] The reset plate 432 cooperates with the clutch knob 431 by means of the abutment screw 4322, and pushes the clutch knob 431 to reset under the action of the reset torsion spring 433. At the same time, it can be linked with the start pin 434 through the bottom groove 4324.

[0036] In this embodiment, the motor drive assembly may include a drive motor 451, a driving gear 452, a driven gear 453, a drive worm 454, and a drive spring 455. The drive motor 451 is fixedly installed below the curved push rod 44. The driving gear 452 is connected to the output shaft of the drive motor 451 and is located at the bottom of the drive motor 451. The driven gear 453 meshes with the driving gear 452. The drive worm 454 is fixedly inserted into the middle of the driven gear 453 and passes through the mounting groove at the bottom of the curved push rod 44. The drive spring 455 is sleeved on the drive worm 454 and located in the mounting groove. The drive motor 451 can drive the drive worm 454 to rotate and compress the drive spring 455 through the driving gear 452 and the driven gear 453, thereby driving the curved push rod 44 to move upward.

[0037] The lower part of the curved push rod 44 contacts the drive worm 454 of the motor drive assembly. The compressive force of the drive worm 454 driven by the drive motor 451 is converted into an upward linear motion, which lifts the start pin 434 and then rotates the external handle connected to the connecting shaft 11 to realize motor-driven unlocking.

[0038] When the smart lock is not authorized, the motor drive component does not work, the curved push rod 44 is in the low position, and the starting pin 434 does not contact the reset plate 432 in the clutch knob 431. At this time, the rotating connecting shaft 11 only drives the clutch knob 431 to rotate freely, and the reset plate 432 remains stationary, so as to prevent unlocking by rotating freely.

[0039] Preferably, it may also include a slot cover assembly, which includes a front slot cover 471 and a rear slot cover 472. A motor drive assembly is installed between the front slot cover 471 and the rear slot cover 472. The front slot cover 471 and the rear slot cover 472 are interlocked and located between the cover plate 41 and the clutch housing 42.

[0040] Furthermore, the motor drive assembly may also include a wire 456 for electrical connection to an external PCB board. One end of the wire 456 is electrically connected to the drive motor 451, and the other end of the wire 456 passes through the slot cover assembly and the clutch housing 42 in sequence, extends upward into the side notch of one of the through holes 4211, and then exits from the wire opening slot 426 at the top of the clutch housing 42.

[0041] The working principle of this embodiment is as follows:

[0042] When dressed formally, such as Figure 9 As shown, installation is completed by securing the clutch to the back of the front lock housing with locking screws through the screw mounting holes on the corner bends; when reversing the installation, as shown... Figure 10 As shown, the installation is completed by passing screws through the through holes and screw mounting holes in sequence to fix the clutch to the back of the front lock's rear housing.

[0043] Once the smart lock is verified, the external PCB board starts the drive motor via wires. The output shaft of the drive motor drives the drive gear to rotate. The drive gear meshes with the driven gear and drives it to rotate, which in turn drives the drive worm gear to rotate. The drive worm gear compresses the drive spring, and the elastic force of the drive spring pushes the curved push rod upward. The curved push rod lifts the starting pin and causes the starting pin to extend into the bottom groove of the reset plate. At this time, if the user rotates the external handle connected to the connecting shaft, the rotation action is transmitted to the clutch assembly and drives the square rod inside the lock to rotate as well, thereby unlocking the door.

[0044] In summary, the clutch housing of this utility model has an integral structure consisting of the shell plate, side plate, and corner bends. The screw mounting holes are located on the corner bends on the front of the clutch housing and distributed at the four corners of the cover plate. Due to the high structural strength of the clutch housing, the entire door lock clutch can be installed on the front or rear cover of the smart door lock with screws, allowing the clutch to be installed in both directions. This solves the installation direction limitation of traditional door lock clutches and has the advantages of convenient installation, strong versatility, and good stability. It meets diverse installation needs, significantly improves installation efficiency, and reduces maintenance costs.

[0045] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A reversible installation of intelligent door lock clutch, comprising a cover plate, a clutch housing and a clutch transmission device, the front of the clutch housing is provided with an opening and is hollow inside, the cover plate is fixedly installed at the opening position of the front of the clutch housing, and the clutch transmission device is installed between the cover plate and the clutch housing, characterized in that: The cover plate has clearance spaces at its four corners. The clutch housing includes an integral shell plate, side plates, and corner bending sections. The side plates have four sections that are bent from the periphery of the shell plate towards the cover plate. The corner bending sections have four sections that are bent horizontally inward from the upper and lower ends of the left and right side plates and are parallel to the shell plate. The corner bending sections are located at the four clearance spaces of the cover plate. Each corner bending section has a screw mounting hole. The four corners of the shell plate have through holes corresponding to the screw mounting holes. ​ 2. The smart door lock clutch according to claim 1, wherein: The cover plate has vertically bent hooks at the bottom of both sides. The two through holes on the clutch housing located at the lower part of the shell plate allow the hooks to pass through and engage, thereby achieving a fixed connection between the cover plate and the clutch housing in the axial direction.

3. The smart door lock clutch of claim 1, wherein: The diameter of the through hole in the clutch housing is greater than the diameter of the corresponding screw mounting hole.

4. The smart door lock clutch of claim 1, wherein: The clutch transmission device includes a connecting shaft, a retaining ring, a bearing, a washer, a clutch assembly, a curved push rod, and a motor drive assembly. The clutch assembly includes a clutch knob, a reset plate, a reset torsion spring, a starter pin, and a compression spring. The reset plate is installed between the connecting shaft and the clutch knob. The clutch knob has arc-shaped openings on both sides. One side of the reset plate extends vertically towards the connecting shaft with an abutment piece. The horizontal height of the abutment piece is the same as the horizontal height of the top surface of the arc-shaped opening. The other side of the reset plate is fixedly connected to an abutment screw. The abutment piece and the abutment screw are located in the two arc-shaped openings of the clutch knob, respectively. A circular hole is formed in the middle of the reset plate. The clutch knob has a receiving groove at its front end and a recess at its rear end. The device has a square hole. The locking end of the connecting shaft passes through the round hole and is fixedly connected to the reset plate by a retaining spring, with its protruding part located in the receiving groove. The inner wall of the round hole of the reset plate has locking protrusions at both ends, and the locking end has a locking groove that engages with the locking protrusions. The bearing and the washer are both sleeved on the locking end. The bearing is located between the reset plate and the washer. The reset torsion spring is sleeved on the bearing. The support arms on both sides of the reset torsion spring abut against the top surface of the abutting screw, the abutting plate, and the arc-shaped opening groove, respectively. The upper and lower edges of the reset plate have grooves. The starting pin is movably installed in the lower hole of the clutch knob by a compression spring and is located below the bottom groove of the reset plate. The motor drive assembly is connected to the bottom of the curved push rod.

5. A reversible smart door lock clutch according to claim 4, characterized in that: The clutch transmission device also includes a limiting screw. A first fixing hole is provided at the top center of the clutch housing, and a second fixing hole corresponding to the first fixing hole is provided at the top center of the cover plate. The limiting screw is fixedly connected between the first fixing hole and the second fixing hole and is located below the top groove of the reset plate.

6. The smart door lock clutch of claim 4, wherein: The motor drive assembly includes a drive motor, a drive gear, a driven gear, a drive worm, and a drive spring. The drive motor is fixedly mounted below the curved push rod. The drive gear is connected to the output shaft of the drive motor and is located at the bottom of the drive motor. The driven gear meshes with the drive gear. The drive worm is fixedly inserted into the middle of the driven gear and passes through the mounting groove at the bottom of the curved push rod. The drive spring is sleeved on the drive worm and located in the mounting groove. The drive motor can drive the drive worm to rotate and compress the drive spring through the drive gear and driven gear, thereby driving the curved push rod to move upward.

7. The smart door lock clutch of claim 6, wherein: It also includes a slot cover assembly, which includes a front slot cover and a rear slot cover. The motor drive assembly is installed between the front slot cover and the rear slot cover. The front slot cover and the rear slot cover are interlocked and located between the cover plate and the clutch housing.

8. The smart door lock clutch according to claim 7, wherein: The motor drive assembly also includes a wire for electrical connection to an external PCB board. One end of the wire is electrically connected to the drive motor, and the other end of the wire passes through the slot cover assembly and the clutch housing in sequence, extends upward into the side notch of one of the through holes, and then exits through the wire opening slot at the top of the clutch housing.

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