Return procedure, electronic door lock and its transmission kit

Abstract

The application provides a kind of back procedure, electronic door lock and its transmission kit.The transmission kit includes gear box, motor module, transmission gear set, transmission rod, clutch transmission module and action detection circuit board.The action detection circuit board has back detection module, which can be used to detect the action state of clutch transmission module.

Description

Technical Field

[0001] This invention relates to a transmission kit, and more particularly to a transmission kit applicable to electronic door locks. Background Technology

[0002] With the rapid advancement of modern technology, smart home appliances are increasingly being applied to home life, making it more comfortable and convenient. Among the many types of smart home appliances, electronic door locks are usually a standard feature. Electronic door locks typically unlock using a password, fingerprint recognition, facial recognition, or other methods, and automatically engage and disengage the latch using a built-in drive motor module.

[0003] In existing technology, to ensure the correct operation of the transmission components driven by the motor module in electronic door locks, sensors are typically installed inside the lock housing to detect the operating status of the transmission components. However, during operation, the speed and starting position of the transmission components inside the electronic door lock may be affected by various internal and external factors. Long-term accumulated operating tolerances may cause the sensors to fail to accurately detect the operating status of the transmission components, resulting in the electronic door lock failing to operate correctly.

[0004] Therefore, how to provide an electronic door lock that avoids operational errors of transmission components is the technical problem that this invention aims to solve. Summary of the Invention

[0005] The main objective of this invention is to provide an electronic door lock and a transmission kit with a return program.

[0006] To achieve the aforementioned objectives, the present invention provides an electronic door lock, installed on a door panel, comprising: a first lock body, including a base and a cover; a transmission assembly, disposed within the first lock body, including: a gearbox, including a lower cover and an upper cover that can be joined together, the lower cover having a first through hole and a detection opening, and the upper cover having a second through hole corresponding to the first through hole; a motor module, mounted on the lower cover; a transmission gear set, pivotally mounted on the lower cover and meshing with the motor module; a transmission rod, with its opposite ends passing through the first and second through holes respectively; and a clutch transmission module, including: a clutch gear, having opposing first surfaces and second surfaces, the first surface having a groove, the groove having two opposing push protrusions located on the same rotation path, and a through first shaft hole in the center of the groove, the second surface having opposing first surfaces and a second surface, the first surface having a groove, the groove having two opposing push protrusions located on the same rotation path, and the second surface having a through first shaft hole in the center of the groove, the second surface having a through first shaft hole located on the second shaft hole, the second surface having a through first shaft hole located on the second shaft hole, the third surface having a through first shaft hole, the fourth surface having a through first shaft hole, the fifth surface having a through first shaft hole, the sixth surface having a through first shaft hole, the seventh surface having a through first shaft hole, the eighth surface having a through first shaft hole, the ninth surface having two opposing push protrusions located on the second shaft hole, the tenth ... Two sensing points are arranged opposite each other along the same rotation path. A transmission rod passes through the first shaft hole, so that the clutch gear is pivotally mounted on the transmission rod and meshes with the transmission gear set. A coupling is rotatably fitted into a groove and coupled with the transmission rod so as to be linked with the transmission rod. Two stop members are arranged on opposite sides of the coupling member, each stop member having a stop portion corresponding to each push protrusion. An action detection circuit board is electrically connected to the motor module and is arranged on the side of the lower cover opposite to the upper cover. The action detection circuit board has opposite third and fourth surfaces. The third surface has a return detection module. The return detection module is arranged in the detection opening and includes a first return detection unit and a second return detection unit. The first and second return detection units correspond to the rotation path of the two sensing points. The latch assembly has a latch spindle, a latch bolt housed in the latch spindle, and a torque blade passing through the latch spindle. The torque blade passes through a base and is connected to one end of a transmission rod that passes through a first through hole, and can be used to control the extension and retraction of the latch bolt. The motor module drives the clutch gear via the transmission gear set, causing each pusher protrusion to push against the stop part and drive the transmission rod to rotate. The transmission rod drives the latch bolt to extend from the latch spindle to the locked position via the torque blade. Then the motor module drives the clutch gear to reverse, causing each pusher protrusion to disengage from the stop part. When the motion detection circuit board detects that one of the two sensing points has passed at least one of the first and second return detection units, it stops the clutch gear to complete the return procedure.

[0007] In the preferred embodiment described above, the transmission rod has a transmission column at one end through the first through hole, and the transmission column has two opposing flange structures in the radial direction.

[0008] In the preferred embodiment described above, the fourth surface has a locking detection module, which includes a first locking detection unit and a second locking detection unit, the first and second locking detection units corresponding to two flange structures.

[0009] In the preferred embodiment described above, when the latch bolt is fully housed within the latch mandrel, one of the two flange structures presses against the second locking detection unit.

[0010] In the preferred embodiment described above, when the latch bolt is in the locked position, the flange structure that originally pressed the second locking detection unit moves away from the second locking detection unit, and the other flange structure moves synchronously and presses the first locking detection unit.

[0011] In the preferred embodiment described above, when the latch bolt is in the locked position, the flange structure that originally pressed the second locking detection unit moves away from the second locking detection unit and then presses the first locking detection unit again.

[0012] In the preferred embodiment described above, the locking detection module is a micro switch module.

[0013] In the preferred embodiment described above, the carriage return detection module is a light detection module, and the two sensing points are light reflection points.

[0014] In the preferred embodiment described above, the carriage return detection module is a Hall magnetic sensing module, and the two sensing points are magnetic elements.

[0015] In the preferred embodiment described above, the coupling member has a polygonal engaging recess on the surface facing the clutch gear.

[0016] In the preferred embodiment described above, the transmission rod is provided with a polygonal engaging block corresponding to the polygonal engaging recess along the radial direction. The polygonal engaging block and the polygonal engaging recess engage with each other, so that the connecting member and the transmission rod move together.

[0017] In the preferred embodiment described above, the coupling member has a second axial hole coaxially disposed with the polygonal engaging recess.

[0018] In the preferred embodiment described above, it further includes an operating element, and the cover has a mounting hole in which the operating element is mounted.

[0019] In the preferred embodiment described above, the transmission rod passes through one end of the second through hole and is connected to the operating element via a mounting hole.

[0020] In the preferred embodiment described above, the transmission rod has a fixed section at one end of the second through hole, and the operating element includes a knob structure and a shaft tube portion combined with the knob structure. The shaft tube portion is installed in the mounting hole and combined with the fixed section.

[0021] In the preferred embodiment described above, the motor module includes a motor body and a worm gear connected to the motor body.

[0022] In the preferred embodiment described above, the transmission gear set includes a first compound gear and a second compound gear. The first compound gear has a first small-diameter ring tooth portion and a first large-diameter ring tooth portion arranged coaxially, and the second compound gear has a second small-diameter ring tooth portion and a second large-diameter ring tooth portion arranged coaxially.

[0023] In the preferred embodiment described above, the first small-diameter ring tooth meshes with the clutch gear, the first large-diameter ring tooth meshes with the second small-diameter ring tooth, and the second large-diameter ring tooth meshes with the worm gear.

[0024] In the preferred embodiment described above, two of the stops are made of a material that combines rigidity and elasticity.

[0025] The present invention also provides a transmission kit suitable for electronic door locks, comprising: a gearbox including a lower cover and an upper cover that can be joined together, the lower cover having a first through hole and a detection opening, and the upper cover having a second through hole corresponding to the first through hole; a motor module mounted on the lower cover; a transmission gear set pivotally mounted on the lower cover and meshing with the motor module; a transmission rod with its opposite ends passing through the first and second through holes respectively; and a clutch transmission module including: a clutch gear having opposing first and second surfaces, the first surface having a groove, the groove having two opposing push protrusions located on the same rotation path, and a through first shaft hole in the center of the groove; and the second surface having two opposing sensing points located on the same rotation path. A rod passes through the first shaft hole, causing the clutch gear to be pivotally mounted on the transmission rod and mesh with the transmission gear set; a coupling member is rotatably fitted into the groove and is coupled to the transmission rod so as to be linked with the transmission rod; two stop members are disposed on opposite sides of the coupling member, each stop member having a stop portion corresponding to each push protrusion; and a motion detection circuit board is electrically connected to the motor module and disposed on the side of the lower cover opposite to the upper cover. The motion detection circuit board has opposite third and fourth surfaces. The third surface has a return detection module, which is disposed in the detection opening and includes a first return detection unit and a second return detection unit. The first and second return detection units correspond to the rotation paths of the two sensing points.

[0026] In the preferred embodiment described above, the transmission rod has a transmission column at one end through the first through hole, and the transmission column has two opposing flange structures in the radial direction.

[0027] In the preferred embodiment described above, the fourth surface has a locking detection module, which includes a first locking detection unit and a second locking detection unit. The first and second locking detection units correspond to two flange structures, and one of the two flange structures can press the first locking detection unit or the second locking detection unit.

[0028] In the preferred embodiment described above, the locking detection module is a micro switch module.

[0029] In the preferred embodiment described above, the carriage return detection module is a light detection module, and the two sensing points are light reflection points.

[0030] In the preferred embodiment described above, the carriage return detection module is a Hall magnetic sensing module, and the two sensing points are magnetic elements.

[0031] In the preferred embodiment described above, the coupling member has a polygonal engaging recess on the surface facing the clutch gear.

[0032] In the preferred embodiment described above, the transmission rod is provided with a polygonal engaging block corresponding to the polygonal engaging recess along the radial direction. The polygonal engaging block and the polygonal engaging recess engage with each other, so that the connecting member and the transmission rod move together.

[0033] In the preferred embodiment described above, the coupling member has a second axial hole coaxially disposed with the polygonal engaging recess.

[0034] In the preferred embodiment described above, the motor module includes a motor body and a worm gear connected to the motor body.

[0035] In the preferred embodiment described above, the transmission gear set includes a first compound gear and a second compound gear. The first compound gear has a first small-diameter ring tooth portion and a first large-diameter ring tooth portion arranged coaxially, and the second compound gear has a second small-diameter ring tooth portion and a second large-diameter ring tooth portion arranged coaxially.

[0036] In the preferred embodiment described above, the first small-diameter ring tooth meshes with the clutch gear, the first large-diameter ring tooth meshes with the second small-diameter ring tooth, and the second large-diameter ring tooth meshes with the worm gear.

[0037] In the preferred embodiment described above, two of the stops are made of a material that combines rigidity and elasticity.

[0038] This invention also provides a carriage return procedure for use in electronic door locks, comprising the following steps: (A). The latch bolt is moved in the first or second direction by using a motor module, so that the latch bolt extends to the locked position; (B) Perform the Enter procedure based on the direction of movement when the latch bolt is locked; (C) Determine if the Enter key press is complete. If not, proceed to step (D). If yes, the Enter key press is complete. (D). Report an error.

[0039] The beneficial effects of this invention are that the provided transmission kit can drive the latch bolt of the electronic door lock to move in two directions, and can be applied to door panels with left-side or right-side switches. Furthermore, the use of a return sequence setting prevents internal gear jamming, allowing the user to easily rotate the operating element to release the electronic door lock.

[0040] Furthermore, this design integrates sensors for sensing the status of transmission components, such as carriage return detection modules and lock detection modules, along with their corresponding sensing structures, into the transmission kit. This design effectively prevents the sensors from failing to correctly detect the status of the transmission components due to long-term accumulated operational tolerances, thus avoiding transmission component failure within the electronic lock. On the other hand, the integrated design of the transmission kit not only reduces the overall size but also allows for easy installation in different electronic locks, thereby reducing the design and manufacturing costs of electronic locks. Attached Figure Description

[0041] Figure 1A This is a three-dimensional schematic diagram of the electronic door lock provided by the present invention from one perspective; Figure 1B This is a top-view perspective view of the electronic door lock provided by the present invention; Figure 1C This is a three-dimensional schematic diagram of the electronic door lock provided by the present invention from another perspective; Figure 2 This is a partial exploded perspective view of the electronic door lock provided by the present invention; Figure 3A An exploded perspective view of the transmission kit provided by the present invention. Figure 3B An exploded perspective view of the transmission kit provided by the present invention; Figure 4A A three-dimensional schematic diagram of the internal components of the transmission kit from one perspective; Figure 4B A three-dimensional schematic diagram of the internal components of the transmission kit from another perspective; Figure 4C A three-dimensional bottom view of the internal components of the transmission kit; Figure 5 This is a system block diagram of the first lock body of the present invention; Figure 6A This is a schematic diagram of the locking detection module operation of the electronic door lock of the present invention when it locks in the first direction; Figure 6B For the corresponding Figure 6A A schematic diagram of the latch bolt's movement; Figure 6C For the corresponding Figure 6A A schematic diagram of the clutch gear operation; Figure 7A This is a schematic diagram of the locking detection module of the electronic door lock of the present invention locking in the second direction; Figure 7B correspond Figure 7A A schematic diagram of the latch bolt's movement; Figure 7C correspond Figure 7A A schematic diagram of the clutch gear operation; and Figure 8 This is a flowchart of the Enter key procedure for the electronic door lock provided by the present invention.

[0042] The attached figures are labeled as follows: A. Rotation axis C control circuit FW Firmware D door panel F1 First Surface F2 Second Surface F3 Third Surface F4 Fourth Surface M Rotation Mark Steps S101~S104 1 Electronic door lock 10 First Lock Body 11. Shell 111 Base 112 Cover 1121 Mounting Hole 113 Power Supply Module 114 Main Circuit Board 17 Operating elements 171 Knob Structure 172 Shaft Tube Section 20 Second Lock Body 21 Lock Cylinder Structure 30 Latch Assembly 31 Latch spindle 311 Torque Blade 32 latch bolts 33 Latch plate 40 Transmission Kit 41 Gearbox 411 Bottom Cover 4111 First perforation 4412, 4413 Inspection openings 4414, 4415 shafts 412 Top Cover 4121 Second perforation 42 Motor Module 421 Motor body 422 worm gear 43 Transmission gear set 431 First compound gear 4311 First large diameter ring tooth section 4312 First minor diameter ring tooth section 432 Second compound gear 4321 The second largest diameter ring tooth section 4322 Second minor diameter ring gear 44 Clutch transmission module 441 Clutch Gear 4411 Groove 4412 Pushing protrusion 4413 First shaft hole 4414 sensing points 442 assemblies 4421 Snap-fit ​​Slot 4422 Polygonal engagement recess 4423 Second shaft hole 443 Stopping component 4431 Stop section 4432 Bending section 45 Motion Detection Circuit Board 451 Circuit Board Body 452 Carriage Return Detection Module 4521 First Carriage Return Detection Unit 4522 Second Carriage Return Detection Unit 453 Lock detection module 4531 First Lock Detection Unit 4532 Second Lock Detection Unit 46. ​​Transmission rod 461 fixed section 462 Polygonal Card Combination Block 463 Transmission Column 4631 Flange Structure 90 fixing bolts Detailed Implementation

[0043] The advantages and features of the present invention, as well as the methods of achieving them, will be more readily understood through a more detailed description with reference to exemplary embodiments and accompanying drawings. However, the invention may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments provided will enable those skilled in the art to more thoroughly and completely convey the scope of the invention.

[0044] First, please refer to Figure 1A, Figure 1B and Figure 1C . Figure 1A This is a three-dimensional schematic diagram of the electronic door lock provided by the present invention from one perspective; Figure 1B This is a top-view perspective view of the electronic door lock provided by the present invention; Figure 1C This is a perspective view of the electronic door lock provided by the present invention. The electronic door lock 1 can be installed on a door panel (not shown in the figure), and includes: a first lock body 10, a second lock body 20, and a latch assembly 30. The first lock body 10 and the second lock body 20 can be installed on two sides of the door panel, respectively located on the inner side of the room and the outer side of the room; the latch assembly 30 is installed on the side edge of the door panel, and the first lock body 10, the second lock body 20, and the latch assembly 30 can be connected to each other by fixing bolts 90 and fixed to the door panel.

[0045] The first lock body 10 has an operating element 17 on its housing 11, which allows the user to manually lock and unlock; the second lock body 20 has a lock cylinder structure 21; the latch assembly 30 has a latch spindle 31, a latch bolt 32 that can be housed in the latch spindle 31, and a torque blade 311 that passes through the latch spindle 31.

[0046] In this embodiment, a latch plate 33 extends upward and downward from the opening of the latch bolt 32 on both sides of the latch spindle 31, and the latch plate 33 can be used to fix the latch assembly 30 to the side edge of the door panel. On the other hand, the two ends of the torque blade 311 are respectively connected to the operating element 17 and the lock cylinder structure 21, so that the user can turn the lock cylinder structure 21 with a key (not shown in the figure), or manually turn the operating element 17 to drive the torque blade 311 to rotate, thereby controlling the extension and retraction of the latch bolt 32 to perform the locking and unlocking actions of the electronic door lock 1.

[0047] Please see Figure 2 , Figure 3A and Figure 3B . Figure 2 This is a partial exploded perspective view of the electronic door lock provided by the present invention; Figure 3A An exploded perspective view of the transmission kit provided by the present invention. Figure 3B This is an exploded perspective view of the transmission kit provided by the present invention. The housing 11 of the first lock body 10 includes a base 111 and a cover 112, and the cover 112 can be combined with the base 111 to form an accommodating space. The cover 112 has a mounting hole 1121 for mounting the operating element 17; a power supply module 113 and a main circuit board 114 are sequentially arranged above the base 111.

[0048] The power supply module 113 provides power for the electronic door lock 1 during operation; the main circuit board 114 is electrically connected to the electronic door lock 1's operating interface, display interface, and speaker unit (not shown in the figure). On the other hand, a transmission assembly 40 is located below the power supply module 113 and the main circuit board 114. The operating element 17 includes a knob structure 171 and a shaft tube 172 connected to the knob structure 171. The shaft tube 172 can be installed in the mounting hole 1121 and can be connected to the torque blade 311 of the latch assembly 30 (e.g., ...) via the transmission assembly 40. Figure 1B As shown), the operating element 17 can be linked with the torque blade 311. In this embodiment, the surface of the knob structure 171 is provided with a rotation mark M that can be identified by the user. For example, when the electronic door lock 1 is not locked, the knob structure 171 is in a vertical state and the rotation mark M is located at the 12 o'clock position. The user can turn the knob structure 171 clockwise or counterclockwise to turn the rotation mark M to the 3 o'clock or 9 o'clock position to lock the electronic door lock 1.

[0049] Please continue reading. Figure 3A and Figure 3B The transmission kit 40 includes: a gearbox 41, a motor module 42, a transmission gear set 43, a clutch transmission module 44, a motion detection circuit board 45, and a transmission rod 46.

[0050] The gearbox 41 includes a lower cover 411 and an upper cover 412 that can be joined together. The lower cover 411 has a first through hole 4111, detection openings 4112 and 4413, and rotating shafts 4114 and 4115; while the upper cover 412 has a second through hole 4121 corresponding to the first through hole 4111. In this embodiment, the detection openings 4112 and 4413 are located on one side of the first through hole 4111; the rotating shafts 4114 and 4115 are arranged adjacent to each other.

[0051] The motor module 42 is mounted on the lower cover 411 and includes a motor body 421 and a worm gear 422 connected to the motor body 421.

[0052] The transmission gear set 43 includes a first compound gear 431 and a second compound gear 432, which are respectively mounted on the rotating shafts 4114 and 4115 of the lower cover 411 and pivotally mounted on the lower cover 411. The first compound gear 431 has a first large-diameter ring tooth portion 4311 and a first small-diameter ring tooth portion 4312 coaxially arranged; the second compound gear 432 also has a second large-diameter ring tooth portion 4321 and a second small-diameter ring tooth portion 4322 coaxially arranged.

[0053] The clutch transmission module 44 includes a clutch gear 441, a coupling member 442, and two stop members 443. The clutch gear 441 has a first surface F1 and a second surface F2 facing each other. The first surface F1 has a groove 4411, and the groove 4411 contains two opposing push-abutments 4412 located on the same rotation path. A first shaft hole 4413 penetrating the axis of the clutch gear 441 is located at the center of the bottom surface of the groove 4411. The second surface F2 has two opposing sensing points 4414 located on the same rotation path. In this embodiment, the two push-abutments 4412 are located on the inner edge of the sidewall of the groove 4411, but in other possible embodiments, the two push-abutments 4412 may also be located on the bottom surface of the groove 4411. The sensing points 4414 are light-reflecting points made of reflective material, such as white plastic, silver paint, or metal.

[0054] The coupling 442 is rotatably fitted into the groove 4411. In this embodiment, the coupling 442 has two parallel side edges and two arc-shaped flange structures perpendicular to the parallel side edges. The arc-shaped flange structures of the coupling 442 correspond to the inner edge of the sidewall of the groove 4411; engagement grooves 4421 are respectively provided at the two parallel side edges. Furthermore, the coupling 442 has a polygonal engagement recess 4422 and a second shaft hole 4423 coaxially arranged with and penetrating the coupling 442 on its surface facing the clutch gear 441.

[0055] The stop 443 includes a stop portion 4431 and two bent portions 4432 extending outward from the stop portion 4431. The bent portions 4432 can be fitted into the engagement groove 4421 of the coupling 442, so that the stop 443 is fixed on opposite sides of the coupling 442, and the stop portion 4431 corresponds to two pushing protrusions 4412 in the groove 4411 of the clutch gear 441. The stop 443 is made of a material that combines rigidity and elasticity, such as a metal spring.

[0056] The motion detection circuit board 45 is electrically connected to the motor module 42 and is disposed on the side of the lower cover 411 opposite to the upper cover 412. It includes a circuit board body 451, a carriage return detection module 452, and a locking detection module 453. The circuit board body 451 has opposing third surfaces F3 and fourth surfaces F4. The carriage return detection module 452 is disposed on the third surface F3 and includes a first carriage return detection unit 4521 and a second carriage return detection unit 4522; the locking detection module 453 is disposed on the fourth surface F4 and includes a first locking detection unit 4531 and a second locking detection unit 4532.

[0057] In this embodiment, the third surface F3 of the circuit board body 451 faces the lower cover 411, and the first and second carriage return detection units 4521 and 4522 of the carriage return detection module 452 correspond to the detection openings 4413 and 4412, respectively, and are configured within the detection openings 4413 and 4412. The carriage return detection module 452 is a light detection module; the lock detection module 453 is a microswitch module. Although this embodiment only proposes an implementation where two detection openings 4413 and 4412 correspond to two carriage return detection units, in practical applications, only one detection opening that can simultaneously cover two carriage return detection units can be provided.

[0058] The two opposite ends of the transmission rod 46 pass through the first and second through holes 4111 and 4121 respectively, and are rotatably mounted on the gearbox 41. The transmission rod 46 includes a fixed section 461, a polygonal engaging block 462, and a transmission column 463. The transmission column 463 passes through the first through hole 4111 of the lower cover 411 and can connect to the torque blade 311 of the latch assembly 30 (e.g., ...). Figure 1B As shown), the transmission column 463 has two opposing flange structures 4631 in the radial direction; the fixed section 461 passes through the second through hole 4121 of the upper cover 412 and can be connected to the shaft tube 172 of the operating element 17 (as shown). Figure 2 (As shown); the polygonal locking block 462, which is arranged in the radial direction, is located between the fixed section 461 and the transmission column 463.

[0059] Please see Figure 4A , Figure 4B and Figure 4C . Figure 4A A three-dimensional schematic diagram of the internal components of the transmission kit from one perspective; Figure 4B A three-dimensional schematic diagram of the internal components of the transmission kit from another perspective; Figure 4C This is a three-dimensional bottom view of the internal components of the transmission assembly. It should be noted that, for ease of explanation, Figure 4A , Figure 4B and Figure 4C The lower cover 411 and upper cover 412 of the gearbox 41 are not shown. When the transmission gear set 43 is installed on the lower cover 411, the second major diameter ring tooth portion 4321 of the second compound gear 432 will mesh with the worm gear 422 of the motor module 42; the first major diameter ring tooth portion 4311 of the first compound gear 431 will mesh with the second minor diameter ring tooth portion 4322 of the second compound gear 432.

[0060] The fixed section 461 of the transmission rod 46 can sequentially pass through the first shaft hole 4413, the polygonal engagement recess 4422 and the second shaft hole 4423 on the clutch transmission module 44, and allow the polygonal engagement block 462 of the transmission rod 46 to engage with the polygonal engagement recess 4422 on the connecting member 42, so that the connecting member 442 can be linked with the transmission rod 46, and a rotation axis A can be defined by the transmission rod 46.

[0061] The clutch gear 441, which engages with the coupling 442, meshes with the first small diameter ring tooth 4312 of the first compound gear 431. Thus, the motor module 42 can drive the clutch gear 441 to rotate via the transmission gear set 43. When the clutch gear 441 rotates clockwise or counterclockwise, the two pushing protrusions 4412 in the groove 4411 will push against the corresponding stop 4431, thereby driving the coupling 442 and the transmission rod 46 connected to the coupling 442 to rotate.

[0062] Furthermore, since the stop 443 is made of a material that combines rigidity and elasticity, this design serves as a protective mechanism. For example, if the torque of the motor module 42 driving the clutch gear 441 is too high, the pusher 4412 will press against the stop 4431 and cause the stop 443 to deform, allowing the pusher 4412 to pass over the stop 4431, thus preventing damage to the transmission gear set 43, clutch gear 441, or transmission rod 46 caused by excessive torque.

[0063] On the other hand, in certain special circumstances, such as when the motor module 42, transmission gear set 43, or clutch gear 441 is damaged or jammed and cannot rotate, if the user twists the operating element 17 with considerable force (as shown in Figure 2) to rotate the transmission rod 46, during the rotation of the transmission rod 46, the stop part 4431 will be squeezed by the pushing protrusion 4412, causing the stop part 443 to deform, allowing the stop part 4431 to pass over the pushing protrusion 4412. In this way, the transmission rod 46 can still rotate smoothly and control the latch assembly 30 to unlock. This design is another protection mechanism that can prevent the user from being locked inside or outside the house due to damage or jamming of the motor module 42, transmission gear set 43, or clutch gear 441.

[0064] The locking detection module 453 is adjacent to the transmission rod 46, and the first locking detection unit 4531 and the second locking detection unit 4532 correspond to the two flange structures 4631 of the transmission column 463, and can be used to detect the rotation state of the transmission column 463. When the transmission rod 46 rotates to a specific angle, one of the two flange structures 4631 will press against the first locking detection unit 4531 or the second locking detection unit 4532, causing the locking detection module 453 to generate different feedback signals. In other possible embodiments, the locking detection module 453 can also be a light detection module or a Hall magnetic force sensing module; and the two flange structures 4631 can be replaced by light reflection points or magnetic elements.

[0065] The first carriage return detection unit 4521 and the second carriage return detection unit 4522 of the carriage return detection module 452 correspond to the rotation path of the two sensing points 4414 of the clutch gear 441, and can be used to detect the rotation state of the clutch gear 441. In this embodiment, the carriage return detection module 452 is a light detection module that can simultaneously emit and receive light. Since the sensing point 4414 is a light reflection point made of reflective material, when the clutch gear 441 rotates and synchronously drives the sensing point 4414, so that the sensing point 4414 is directly facing the first carriage return detection unit 4521 or the second carriage return detection unit 4522, the sensing point 4414 can reflect the light emitted by the carriage return detection module 452, so that the first and second carriage return detection units 4521 and 4522 receive a strong reflected light signal, and thus the carriage return detection module 452 can sense that the sensing point 4414 is passing over it.

[0066] Although this embodiment only describes an implementation where the carriage return detection module 452 is a light detection module and the sensing point 4414 is a light reflection point, in practical applications, the carriage return detection module 452 and the sensing point 4414 can also be replaced by currently known detection methods. For example, the carriage return detection module 452 can be a Hall magnetic force sensing module, and the sensing point 4414 can be a magnetic element, so that the carriage return detection module 452 can sense the magnetic force of the sensing point 4414 and generate a corresponding control signal, and is not limited to the implementation method proposed in this embodiment.

[0067] Please see Figure 5 , Figure 5This is a system block diagram of the first lock body of the present invention. The main circuit board 114 of the first lock body 10 is electrically connected to the power supply module 113 and the motion detection circuit board 45. The motion detection circuit board 45 is electrically connected to the carriage return detection module 452, the locking detection module 453, and the motor module 42. The motion detection circuit board 45 has a control circuit C, which includes firmware (FW). The motion detection circuit board 45 can control the operating time and rotation direction of the motor module 42 based on the feedback signals detected by the carriage return detection module 452 and the locking detection module 453, according to the operating program defined by the programming language of the firmware (FW).

[0068] Please refer to the following: Figures 4A to 4C , Figure 6A , Figure 6B and Figure 6C . Figure 6A This is a schematic diagram of the locking detection module operation of the electronic door lock of the present invention when it locks in the first direction; Figure 6B For the corresponding Figure 6A A schematic diagram of the latch bolt's movement; Figure 6C For the corresponding Figure 6A A schematic diagram illustrating the operation of the clutch gear. It should be noted that, for ease of explanation, Figure 6A , Figure 6B and Figure 6C Only the components that move along the axis of rotation A are shown.

[0069] When the knob structure 171 of the operating element 17 is in a vertical state, that is, when the rotation mark M of the knob structure 171 is at the 12 o'clock position (e.g. Figure 6A As shown in (i), the flange structure 4631 on the right side of the transmission rod 46 will press the second locking detection unit 4532 of the locking detection module 453, causing the first locking detection unit 4531 and the second locking detection unit 4532 of the locking detection module 453 to generate '0' and '1' detection signals. The action detection circuit board 45 that receives the '0' and '1' detection signals determines that the latch bolt 32 is completely housed in the latch spindle 31 (as shown in (i)). Figure 6B (as shown in (i)).

[0070] Next, when the user manually rotates the knob structure 171, or when the motor module 12 drives the transmission rod 16 to rotate the knob structure 171 counterclockwise along the rotation axis A to achieve a horizontal state, that is, the rotation mark M of the knob structure 171 rotates to the 9 o'clock position (e.g., Figure 6AWhen the flange structure 4631 of the second locking detection unit 4532 is pressed, it will disengage and move away from the second locking detection unit 4532. Conversely, the flange structure 4631 on the left side will move synchronously with the rotation of the transmission rod 46 and press the first locking detection unit 4531. At this time, the first locking detection unit 4531 and the second locking detection unit 4532 of the locking detection module 453 generate a '1, 0' detection signal. The action detection circuit board 45 that receives the '1, 0' detection signal determines that the latch bolt 32 has extended in the first direction and reached the locking position (e.g., Figure 6B (as shown in (ii)). In this embodiment, the first direction is to the left.

[0071] At Figure 6C In the process of automatic locking of the electronic door lock 1, the motor module 42 drives the clutch gear 441 to rotate counterclockwise along the rotation axis A via the transmission gear set 43. At this time, the pushing protrusion 4412 pushes against the stop part 4431 of the stop member 443 (e.g., Figure 6C As shown in (i) and (ii), this causes the coupling 442 and the linked transmission rod 46 to rotate. When the transmission rod 46 rotates and the locking detection module 453 outputs a detection signal of '1' or '0' (as shown in (i) and (ii) respectively), it will cause the coupling 442 and the linked transmission rod 46 to rotate. Figure 6A (ii) indicates that the latch bolt 32 has extended to the locked position (as shown in the diagram). Figure 6B (as shown in (ii)). Subsequently, the motion detection circuit board 45 controls the motor module 42 to drive the clutch gear 441 in reverse, that is, the clutch gear 441 rotates clockwise. At this time, the push protrusion 4412 will disengage from the stop part 4431 and no longer interfere with each other. And when the carriage return detection module 452 detects that one of the sensing points 4414 passes through the second carriage return detection unit 4522 and the first carriage return detection unit 4521 in sequence, the clutch gear 441 stops moving to complete the carriage return procedure (as shown in (ii)). Figure 6C (as shown in (iii)). In other possible implementations, after the second carriage return detection unit 4522 detects that the sensing point 4414 has passed for the first time (as shown in (iii)). Figure 6C As shown in (ii), the motion detection circuit board 45 immediately shuts down the second carriage return detection unit 4522. Then, when the carriage return detection module 452 detects that one of the sensing points 4414 has passed the first carriage return detection unit 4521, it stops the clutch gear 441 from moving to complete the carriage return procedure (as shown in (ii)). Figure 6C (as shown in (iii)).

[0072] Because the Enter procedure causes the pusher protrusion 4412 of the clutch gear 441 to disengage from the stop portion 4431 of the stop member 443, a buffer rotation range is formed between the pusher protrusion 4412 and the stop portion 4431. Thus, when the user manually turns the knob structure 171 of the operating element 17 to drive the transmission rod 46 to rotate, the rotation mark M of the knob structure 171 returns to the 12 o'clock position (e.g., Figure 6C When (i) is shown, the stop part 4431 of the stopper 443 will then interfere with the pusher protrusion 4412 of the clutch gear 441. By executing the Enter procedure, the situation where the clutch gear 441 is stuck, preventing the user from rotating the transmission rod 46 by twisting the operating element 17, can be effectively avoided.

[0073] Please refer to the following: Figures 4A to 4C , Figure 7A , Figure 7B and Figure 7C . Figure 7A This is a schematic diagram of the locking detection module of the electronic door lock of the present invention locking in the second direction; Figure 7B correspond Figure 7A A schematic diagram of the latch bolt's movement; Figure 7C correspond Figure 7A A schematic diagram of the clutch gear operation. Similarly, for ease of explanation, Figure 7A , Figure 7B and Figure 7C Only some of the components that perform the linked actions are shown.

[0074] In this embodiment, the latch bolt 32 extends in the second direction, therefore the knob structure 171 and the clutch gear 441 rotate clockwise along the rotation axis A. When the knob structure 171 is in a vertical state, that is, when the rotation indicator M of the knob structure 171 is at the 12 o'clock position (e.g., Figure 7A As shown in (i), the flange structure 4631 on the right side of the transmission rod 46 will press against the second locking detection unit 4532, causing the locking detection module 453 to output a '0, 1' detection signal. Upon receiving the '0, 1' detection signal, the action detection circuit board 45 determines that the latch bolt 32 is completely housed within the latch spindle 31 (as shown in (i)). Figure 7B (as shown in (i)).

[0075] Next, when the knob structure 171 is rotated clockwise and is in a horizontal position, that is, when the rotation mark M of the knob structure 171 is rotated to the 3 o'clock position (e.g., Figure 7AWhen (ii) is reached, the flange structure 4631 that was originally pressing the second locking detection unit 4532 will disengage and move away from the second locking detection unit 4532, and move synchronously with the rotation of the transmission rod 16 to press the first locking detection unit 4531, causing the first locking detection unit 4531 and the second locking detection unit 4532 of the locking detection module 453 to generate '1, 0' detection signals. The action detection circuit board 45 that receives the '1, 0' detection signals determines that the latch bolt 32 has extended in the second direction and reached the locking position (e.g., Figure 7B (ii)). In this embodiment, the second direction is to the right.

[0076] At Figure 7C In the process of automatic locking of the electronic door lock 1, the motor module 42 drives the clutch gear 441 to rotate clockwise along the rotation axis A via the transmission gear set 43. At this time, the pushing protrusion 4412 pushes against the stop part 4431 of the stop member 443 (e.g., Figure 7C As shown in (i) and (ii), this causes the coupling 442 and the linked transmission rod 46 to rotate. Similarly, when the transmission rod 46 rotates and the locking detection module 453 outputs a detection signal of '1' or '0' (as shown in (i) and (ii) respectively), it will cause the coupling member 442 and the linked transmission rod 46 to rotate. Figure 7A (ii) indicates that the latch bolt 32 has extended to the locked position (as shown in the diagram). Figure 7B (as shown in (ii)). Subsequently, the motion detection circuit board 45 controls the motor module 42 to drive the clutch gear 441 in reverse, that is, the clutch gear 441 rotates counterclockwise. At this time, the push protrusion 4412 will disengage from the stop part 4431 and no longer interfere with each other. And when the carriage return detection module 452 of the motion detection circuit board 45 detects that one of the sensing points 4414 passes through the first carriage return detection unit 4521 and the second carriage return detection unit 4522 in sequence, the clutch gear 441 stops moving to complete the carriage return procedure (as shown in (ii)). Figure 7C (as shown in (iii)). In other possible implementations, after the first carriage return detection unit 4521 detects that the sensing point 4414 has passed for the first time (as shown in (iii)). Figure 7C As shown in (ii), the motion detection circuit board 45 immediately shuts down the first carriage return detection unit 4521. Then, when the carriage return detection module 452 detects that one of the sensing points 4414 has passed the second carriage return detection unit 4522, it stops the clutch gear 441 to complete the carriage return procedure (as shown in (ii)). Figure 7C (as shown in (iii)).

[0077] Please refer to the following: Figures 6A to 7C and Figure 8 , Figure 8This is a flowchart of the Enter key procedure for the electronic door lock provided by the present invention. The Enter key procedure of the electronic door lock is applied to the electronic door lock 1 installed on the door panel. First, when the electronic door lock 1 is electrically locked, the motor module 42 drives the latch bolt 32 to move in a first direction or a second direction, so that the latch bolt 32 extends to the locked position (step S101). In step S101, the motion detection circuit board 45 controls the motor module 42 to drive the latch bolt 32 to move in the first direction or the second direction. If the motor module 42 completes its action within a preset predetermined time limit, and the locking detection module 453 of the motion detection circuit board 45 still outputs a detection signal of '0, 1', it indicates that the latch bolt 32 has not extended to the locked position; conversely, if the locking detection module 453 outputs a detection signal of '1, 0' (e.g., ... Figure 6A (ii) or Figure 7A (ii) indicates that the latch bolt 32 has extended to the locked position (as shown in the diagram). Figure 6B (ii) or Figure 7B (as shown in (ii)). In this embodiment, the first direction is to the left; the second direction is to the right.

[0078] Next, proceed to step S102: perform a return procedure based on the direction of movement of the latch bolt 32 when it is locked. In step S102, if the latch bolt 32 moves in the first direction (e.g., ... Figure 6B As shown (i.e., on the left), the clutch gear 441 is locked, and during the Enter procedure, the clutch gear 441 rotates clockwise to perform the Enter procedure (as shown). Figure 6C (as shown); if the latch bolt 32 moves in the second direction (as shown) Figure 7B As shown (i.e., on the right), the clutch gear 441 is locked, and during the Enter procedure, the clutch gear 441 rotates counterclockwise to perform the Enter procedure (as shown). Figure 7C (As shown).

[0079] By executing the Enter procedure, the pusher 4412 of the clutch gear 441 disengages from the stop 4431 of the stop member 443. In the buffered rotation range formed by the pusher 4412 and the stop 4431, the situation of the user being unable to rotate the transmission rod 46 by twisting the operating element 17 can be effectively avoided due to the clutch gear 441 getting stuck.

[0080] Next, it is determined whether the Enter key procedure is complete (step 103). In step S103, if the Enter key detection module 452 of the action detection circuit board 45 does not detect that the sensing point 4414 has passed through the second and first Enter key detection units 4522 and 4521 in sequence, or has passed through the first and second Enter key detection units 4521 and 4522 in sequence, or has not passed through the first or second Enter key detection units 4521 and 4522 which are set to the open state (e.g.) Figure 6C and Figure 7CIf the Enter key is not completed, the result is "No", and step S104 is executed: report the error.

[0081] In step S104, the motion detection circuit board 45 generates an error message and transmits the error message to the main circuit board 114 (e.g., ...). Figure 5 (As shown). Subsequently, the main circuit board 114 generates error warnings through components such as the operation interface, display interface, or speaker unit (not shown in the figure) to notify the user that the electronic door lock 1 may be unable to operate normally due to incorrect installation or abnormal internal components.

[0082] In step S103, if the motion detection circuit board 45 detects that the sensing point 4414 passes through the second and first carriage return detection units 4522 and 4521 in sequence, or passes through the first and second carriage return detection units 4521 and 4522 in sequence, or passes through the first or second carriage return detection units 4521 and 4522 which are set to the open state, it indicates that the carriage return procedure is completed, and the judgment result is "yes". At this time, the motion detection circuit board 45 controls the motor module 12 to stop driving the clutch gear 441 to complete the carriage return procedure.

[0083] Compared to prior art, the transmission kit provided by this invention can drive the latch bolt of the electronic door lock to move in two directions, and can be applied to door panels with left-side or right-side switches. Furthermore, the use of a return sequence setting prevents internal gear jamming, allowing the user to easily rotate the operating element to release the electronic door lock.

[0084] Furthermore, this design integrates sensors for sensing the status of transmission components, such as carriage return detection modules and lock detection modules, along with their corresponding sensing structures, into the transmission kit. This design effectively prevents the sensors from failing to correctly detect the status of the transmission components due to long-term accumulated operational tolerances, thus avoiding transmission component malfunction within the electronic door lock. On the other hand, the integrated design of the transmission kit not only reduces the overall size but also allows for easy installation in different electronic door locks, thereby reducing the design and manufacturing costs of electronic door locks. Therefore, this invention is a creation with significant industrial value.

[0085] This invention may be modified in various ways by those skilled in the art, but all such modifications shall not depart from the protection sought by the appended claims.

Claims

1. An electronic door lock, installed on a door panel, comprising: A first lock body, comprising a base and a cover; A transmission assembly, disposed within the first lock body, includes: A gearbox includes a lower cover and an upper cover that can be joined together, the lower cover having a first through hole and at least one detection opening, and the upper cover having a second through hole corresponding to the first through hole; A motor module is installed on the lower cover; A transmission gear set is pivotally mounted on the lower cover and meshes with the motor module; A transmission rod, with its two opposite ends passing through the first through hole and the second through hole respectively; A clutch transmission module includes: A clutch gear has a first surface and a second surface opposite to each other. The first surface has a groove, and the groove has two opposing push protrusions located on the same rotation path. The groove has a through first shaft hole in the center. The second surface has two sensing points located on the same rotation path and opposite to each other. The transmission rod passes through the first shaft hole, so that the clutch gear is pivotally mounted on the transmission rod and meshes with the transmission gear set. A coupling element, rotatably fitted into the groove and coupled to the transmission rod for linkage with the transmission rod; and Two stoppers are disposed on opposite sides of the connecting member, each stopper having a stop portion corresponding to each of the pushing protrusions; and An action detection circuit board is electrically connected to the motor module and is disposed on the side of the lower cover opposite to the upper cover. The action detection circuit board has a third surface and a fourth surface opposite to each other. The third surface has a carriage return detection module. The carriage return detection module is disposed in the at least one detection opening and includes a first carriage return detection unit and a second carriage return detection unit. The first carriage return detection unit and the second carriage return detection unit correspond to the rotation path of the two sensing points. A latch assembly having a latch spindle, a latch bolt housed in the latch spindle, and a torque vane passing through the latch spindle, the torque vane passing through the base and connected to one end of the transmission rod passing through the first through hole, and being used to control the extension and retraction of the latch bolt; The motor module drives the clutch gear via the transmission gear set, causing each of the push protrusions to push against the stop portion and drive the transmission rod to rotate. The transmission rod drives the latch bolt to extend from the latch spindle to a locked position via the torque blade. Then, the motor module drives the clutch gear to reverse, causing each of the push protrusions to disengage from the stop portion. When the action detection circuit board detects that one of the two sensing points has passed at least one of the first carriage return detection unit and the second carriage return detection unit, it stops the clutch gear to complete the carriage return procedure.

2. The electronic door lock as claimed in claim 1, wherein the transmission rod has a transmission column at one end through the first through hole, and the transmission column is provided with two opposing flange structures in the radial direction.

3. The electronic door lock as claimed in claim 2, wherein the fourth surface has a locking detection module, the locking detection module including a first locking detection unit and a second locking detection unit, the first locking detection unit and the second locking detection unit corresponding to the two flange structures.

4. The electronic door lock as claimed in claim 3, wherein when the latch bolt is fully housed within the latch spindle, one of the two flange structures presses against the second locking detection unit.

5. The electronic door lock as claimed in claim 4, wherein when the latch bolt is in the locked position, the flange structure that originally pressed the second locking detection unit moves away from the second locking detection unit, and the other flange structure moves synchronously and presses the first locking detection unit.

6. The electronic door lock as claimed in claim 4, wherein when the latch bolt is in the locked position, the flange structure that originally pressed the second locking detection unit moves away from the second locking detection unit and presses the first locking detection unit again.

7. The electronic door lock as described in claim 3, wherein the locking detection module is a micro switch module.

8. The electronic door lock as described in claim 1, wherein the carriage return detection module is a light detection module and the two sensing points are light reflection points.

9. The electronic door lock as claimed in claim 1, wherein the carriage return detection module is a Hall magnetic force sensing module, and the two sensing points are magnetic elements.

10. The electronic door lock of claim 1, wherein the coupling member has a polygonal engagement recess on the surface facing the clutch gear.

11. The electronic door lock as claimed in claim 10, wherein the transmission rod is provided with a polygonal engaging block corresponding to the polygonal engaging recess in the radial direction, the polygonal engaging block engaging with the polygonal engaging recess, so that the connecting member and the transmission rod are linked.

12. The electronic door lock of claim 10, wherein the coupling has a second axial hole coaxially disposed with the polygonal engaging recess.

13. The electronic door lock of claim 12, further comprising an operating element, the cover having a mounting hole in which the operating element is mounted.

14. The electronic door lock of claim 13, wherein the drive rod passes through one end of the second through hole and is connected to the operating element via the mounting hole.

15. The electronic door lock of claim 14, wherein the transmission rod has a fixed section at one end of the second through hole, and the operating element includes a knob structure and a shaft tube portion coupled to the knob structure, the shaft tube portion being installed in the mounting hole and coupled to the fixed section.

16. The electronic door lock as claimed in claim 1, wherein the motor module includes a motor body and a worm gear connected to the motor body.

17. The electronic door lock as claimed in claim 16, wherein the transmission gear set includes a first compound gear and a second compound gear, the first compound gear having a first small-diameter ring tooth portion and a first large-diameter ring tooth portion coaxially arranged, and the second compound gear having a second small-diameter ring tooth portion and a second large-diameter ring tooth portion coaxially arranged.

18. The electronic door lock as claimed in claim 17, wherein the first small-diameter ring tooth portion meshes with the clutch gear, the first large-diameter ring tooth portion meshes with the second small-diameter ring tooth portion, and the second large-diameter ring tooth portion meshes with the worm gear.

19. The electronic door lock as claimed in claim 1, wherein the two stops are made of a material that combines rigidity and elasticity.

20. A transmission kit for electronic door locks, comprising: A gearbox includes a lower cover and an upper cover that can be joined together, the lower cover having a first through hole and at least one detection opening, and the upper cover having a second through hole corresponding to the first through hole; A motor module is installed on the lower cover; A transmission gear set is pivotally mounted on the lower cover and meshes with the motor module; A transmission rod, with its two opposite ends passing through the first through hole and the second through hole respectively; A clutch transmission module includes: A clutch gear has a first surface and a second surface opposite to each other. The first surface has a groove, and the groove has two opposing push protrusions located on the same rotation path. The groove has a through first shaft hole in the center. The second surface has two sensing points located on the same rotation path and opposite to each other. The transmission rod passes through the first shaft hole, so that the clutch gear is pivotally mounted on the transmission rod and meshes with the transmission gear set. A coupling element, rotatably fitted into the groove and coupled to the transmission rod for linkage with the transmission rod; and Two stoppers are disposed on opposite sides of the connecting member, each stopper having a stop portion corresponding to each of the pushing protrusions; and An action detection circuit board is electrically connected to the motor module and is disposed on the side of the lower cover opposite to the upper cover. The action detection circuit board has a third surface and a fourth surface opposite to each other. The third surface has a carriage return detection module. The carriage return detection module is disposed in the at least one detection opening and includes a first carriage return detection unit and a second carriage return detection unit. The first carriage return detection unit and the second carriage return detection unit correspond to the rotation path of the two sensing points.

21. The transmission assembly as claimed in claim 20, wherein the transmission rod has a transmission column at one end through the first through hole, the transmission column having two opposing flange structures in the radial direction.

22. The transmission kit of claim 21, wherein the fourth surface has a locking detection module, the locking detection module including a first locking detection unit and a second locking detection unit, the first locking detection unit and the second locking detection unit corresponding to the two flange structures, and one of the two flange structures is pressable against the first locking detection unit or the second locking detection unit.

23. The transmission kit of claim 22, wherein the locking detection module is a micro switch module.

24. The transmission kit as claimed in claim 20, wherein the return detection module is a light detection module and the two sensing points are light reflection points.

25. The transmission kit of claim 20, wherein the carriage return detection module is a Hall magnetic force sensing module and the two sensing points are magnetic elements.

26. The transmission assembly of claim 20, wherein the coupling member has a polygonal engagement recess on the surface facing the clutch gear.

27. The transmission assembly as claimed in claim 26, wherein the transmission rod is provided with a polygonal engaging block corresponding to the polygonal engaging recess in the radial direction, the polygonal engaging block engaging with the polygonal engaging recess to enable the coupling to move in conjunction with the transmission rod.

28. The transmission assembly of claim 26, wherein the coupling has a second shaft hole coaxially disposed with the polygonal engagement recess.

29. The transmission kit of claim 20, wherein the motor module includes a motor body and a worm gear connected to the motor body.

30. The transmission kit of claim 29, wherein the transmission gear set includes a first compound gear and a second compound gear, the first compound gear having a first small-diameter ring tooth portion and a first large-diameter ring tooth portion coaxially arranged, and the second compound gear having a second small-diameter ring tooth portion and a second large-diameter ring tooth portion coaxially arranged.

31. The transmission assembly of claim 30, wherein the first minor diameter ring tooth meshes with the clutch gear, the first major diameter ring tooth meshes with the second minor diameter ring tooth, and the second major diameter ring tooth meshes with the worm gear.

32. The transmission assembly of claim 20, wherein the second stop is made of a material that combines rigidity and elasticity.

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