A seat cushion lock with coaxial gear clutch

Abstract

The utility model relates to a seat pad lock, especially a seat pad lock of coaxial gear clutch, it includes the sealing plate, the cable plate and the buckle plate, the buckle plate and the cable plate rotation setting, the buckle plate is connected with the cable plate through the first reset spring, the cable plate is equipped with the drive block, and the drive block left and right shift setting is equipped with the rack, wherein, still include the casing, the mounting shaft is set up in the casing and extends along the front -back direction, the first gear, the first end face gear, the second end face gear, the second gear and the second reset spring cover are set on the mounting shaft, the first gear and the second gear are connected with the drive block respectively, motor drive, the first end face gear is engaged with the second end face gear in the mounting shaft axial direction and is connected with the first gear and the second gear respectively, the drive block or the cable plate is equipped with the baffle, the first gear is stationary with the drive block, the second gear rotates with the motor, the second gear overcomes the axial displacement of second reset spring elasticity, and the first end face gear and the second end face gear continue to engage and disengage.

Description

Technical Field

[0001] This utility model relates to a seat lock, and more particularly to a seat lock with a coaxial gear clutch. Background Technology

[0002] Chinese utility patent CN221273311U discloses an electrically controlled unlocking mechanism. The motor drives the rotating rod to rotate, and the rotating rod pushes the sliding rod to move, thereby causing the sliding rod to drive the first rotating plate and the second rotating plate to rotate. This simplifies the transmission structure and requires less installation space. However, if the motor continues to rotate after the rotating rod pushes the sliding rod into place due to a malfunction, the transmission structure will be jammed, and there is a risk of damage to the components. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present utility model aims to provide a seat lock with coaxial gear clutch, which is provided with a first end face gear and a second end face gear that are axially meshed. After the drive block moves into place, the motor continues to rotate. The first end face gear and the second end face gear will repeatedly engage and disengage in the axial direction, so the transmission structure will not jam.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This type of coaxial gear clutch seat lock includes a sealing plate, a cable plate, and a buckle plate. The sealing plate cooperates with the buckle plate, and the buckle plate and the cable plate are rotatably arranged. The buckle plate is connected to the cable plate via a first return spring. The cable plate is equipped with a driving block, which is movably arranged left and right. The driving block is equipped with a rack. The lock also includes a housing with an opening for the driving block to protrude. A mounting shaft is disposed within the housing and extends in the front-rear direction. A first gear, a first end face gear, a second end face gear, a second gear, and a second return spring are sleeved on the mounting shaft. The first gear and the second gear are respectively connected to the driving block and the motor. The first end face gear and the second end face gear mesh axially on the mounting shaft and are respectively connected to the first gear and the second gear. The driving block or the cable plate is equipped with a baffle.

[0005] In this scheme, after the drive block moves into place, the motor continues to rotate. Because of the stop block, the first gear stays stationary with the drive block, while the second gear rotates with the motor. The second gear overcomes the elastic force of the second return spring and undergoes axial displacement. The first end face gear and the second end face gear continuously engage and disengage, and the housing can keep the first gear stationary in the axial direction.

[0006] Preferably, the diameter of the first gear is smaller than the diameter of the second gear, the first gear is connected to the rack and pinion drive, and the second gear is connected to the motor drive.

[0007] In this scheme, the linear velocity of the first gear is less than that of the second gear, which has a deceleration effect.

[0008] Preferably, the housing is further provided with a third gear and a fourth gear arranged coaxially. The diameter of the third gear is smaller than that of the fourth gear. The third gear meshes with the rack, and the fourth gear meshes with the first gear. The first gear is located in front of the second gear, and the third gear is located in front of the fourth gear.

[0009] In this scheme, when the drive block is in place, the third and fourth gears act as a buffer to prevent the first gear from suddenly jamming and the first and second end face gears from wearing out violently.

[0010] Preferably, the housing further includes a fifth gear, a sixth gear, a seventh gear, and an eighth gear. The fifth gear and the sixth gear are coaxially arranged, and the diameter of the fifth gear is smaller than that of the sixth gear. The fifth gear meshes with the second gear, and the sixth gear meshes with the seventh gear. The seventh gear and the eighth gear are coaxially arranged, and the diameter of the seventh gear is smaller than that of the eighth gear. The eighth gear is connected to the motor output shaft for transmission. The fifth gear is located behind the sixth gear, and the seventh gear is located behind the eighth gear.

[0011] In this design, the distance between the motor and the drive block in the front-to-back direction is small, resulting in a compact overall structure for the seat lock.

[0012] Preferably, the motor output shaft is provided with helical teeth, which mesh with the eighth gear.

[0013] In this design, the spacing in the front-to-back direction of the overall structure is further reduced.

[0014] Preferably, the motor output shaft extends vertically.

[0015] In this design, the spacing between the left and right sides of the overall structure is reduced, which makes installation easier.

[0016] Preferably, the front of the sealing plate is defined as the front and the back as the back. The cable plate and the buckle plate are rotatably disposed on the back of the sealing plate. The cable plate extends forward with a stop arm, which cooperates with the bottom wall of the sealing plate. The stop block is integrally disposed with the sealing plate.

[0017] In this design, the stop arm abuts against the bottom wall after the cable plate rotates to its position.

[0018] Preferably, the cable plate extends forward with a driven arm, the drive block extends forward with a drive arm, and the drive arm cooperates with the driven arm.

[0019] In this design, after the drive arm and driven arm come into contact, the drive block drives the cable plate to rotate.

[0020] The beneficial effects of this utility model are as follows: after the drive block moves into position, the motor continues to rotate. Because of the stop block, the first gear remains stationary with the drive block, while the second gear rotates with the motor. The second gear overcomes the elastic force of the second return spring and undergoes axial displacement. The first end face gear and the second end face gear continuously engage and disengage, and the housing enables the first gear to remain stationary in the axial direction. Therefore, this utility model has substantial features and progress compared with the prior art. Attached Figure Description

[0021] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the shell in this utility model.

[0024] Figure 3 This is a three-dimensional structural diagram of the first gear and the first end face gear in this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram of the second gear and the second end face gear in this utility model.

[0026] Figure 5 This is a three-dimensional structural diagram of the shell from another angle in this utility model.

[0027] In the diagram: 1. Sealing plate; 2. Cable plate; 3. Buckle plate; 4. First return spring; 5. Drive block; 6. Rack; 7. Housing; 8. Drive arm; 9. Mounting shaft; 10. First gear; 11. First end face gear; 12. Second end face gear; 13. Second gear; 14. Second return spring; 15. Third gear; 16. Fourth gear; 17. Fifth gear; 18. Sixth gear; 19. Seventh gear; 20. Eighth gear; 21. Helical gear; 22. Stop arm; 23. Driven arm; 24. Motor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0031] See appendix Figure 1-5 This embodiment of the seat lock with coaxial gear clutch includes a sealing plate 1, a cable plate 2, and a buckle plate 3. The sealing plate 1 cooperates with the buckle plate 3, and the buckle plate 3 and the cable plate 2 are rotatably disposed. The buckle plate 3 is connected to the cable plate 2 through a first return spring 4. The cable plate 2 is equipped with a driving block 5, which is movably disposed left and right. The driving block 5 is equipped with a rack 6. The lock also includes a housing 7, which has an opening for the driving block 5 to be exposed. A mounting shaft 9 is disposed in the housing 7 and extends in the front-rear direction. A first gear 10, a first end face gear 11, a second end face gear 12, a second gear 13, and a second return spring 14 are sleeved on the mounting shaft 9. The first gear 10 and the second gear 13 are respectively connected to the drive block 5 and the motor 24 for transmission. The first end face gear 11 and the second end face gear 12 mesh axially on the mounting shaft 9 and are respectively connected to the first gear 10 and the second gear 13. The front of the sealing plate 1 is defined as the front and the back as the back. The cable plate 2 and the buckle plate 3 are rotatably disposed on the back of the sealing plate 1. The cable plate 2 extends forward with a stop arm 22. The stop arm 22 cooperates with the bottom wall of the sealing plate 1. The stop block is integrally disposed with the sealing plate 1. The cable plate 2 extends forward with a driven arm 23. The drive block 5 extends forward with a drive arm 8. The drive arm 8 cooperates with the driven arm 23.

[0032] In this embodiment, when unlocking, the motor 24 drives the second gear 13 and the second end face gear 12 to rotate. The second end face gear 12 drives the first end face gear 11 and the first gear 10 to rotate. The first gear 10 drives the drive block 5 to move to the right. The drive arm 8 of the drive block 5 abuts against the driven arm 23 of the cable plate 2, causing the cable plate 2 to rotate. The cable plate 2 drives the buckle plate 3 to rotate through the first reset spring 4. The buckle hook of the buckle plate 3 leaves the U-shaped opening of the sealing plate 1, completing the unlocking. When locking, the motor 24 can be reversed.

[0033] The bottom wall of the sealing plate 1 blocks the stop arm 22 of the cable plate 2, and the drive block 5 is stationary. If the motor 24 continues to rotate due to a fault, the second gear 13 and the second end face gear 12 will rotate, while the first gear 10 and the second end face gear 12 will be stationary. Under the elastic force of the second return spring 14, the first end face gear 11 and the second end face gear 12 will repeat the clutch action, and the transmission structure will not be jammed. The baffle can be part of the sealing plate 1.

[0034] In other alternative implementations, the stop may be disposed on the housing 7 or as part of the housing 7.

[0035] See appendix Figure 2 , 5 The first gear 10 has a smaller diameter than the second gear 13. The first gear 10 is connected to the rack 6, and the second gear 13 is connected to the motor 24. The housing 7 also contains a third gear 15 and a fourth gear 16 coaxially arranged. The third gear 15 has a smaller diameter than the fourth gear 16. The third gear 15 meshes with the rack 6, and the fourth gear 16 meshes with the first gear 10. The first gear 10 is positioned in front of the second gear 13, and the third gear 15 is positioned in front of the fourth gear 16. The housing 7 also contains a fifth gear 17, a sixth gear 18, a seventh gear 19, and an eighth gear 20. The fifth gear 17... The fifth gear 17 and the sixth gear 18 are coaxially arranged. The diameter of the fifth gear 17 is smaller than that of the sixth gear 18. The fifth gear 17 meshes with the second gear 13. The sixth gear 18 meshes with the seventh gear 19. The seventh gear 19 and the eighth gear 20 are coaxially arranged. The diameter of the seventh gear 19 is smaller than that of the eighth gear 20. The eighth gear 20 is connected to the output shaft of the motor 24. The fifth gear 17 is located behind the sixth gear 18. The seventh gear 19 is located behind the eighth gear 20. The output shaft of the motor 24 is provided with a helical tooth 21, which meshes with the eighth gear 20. The output shaft of the motor 24 extends vertically.

[0036] In this embodiment, four sets of coaxial gears are used for speed reduction. The orientation of the small gear and the large gear is designed to control the overall thickness of the gear set. The extension direction of the output shaft of the motor 24 is designed to make the structure compact. After two speed reductions, the second gear 13 and the second end face gear 12 have low rotational speeds, low torques, and low wear.

[0037] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.

Claims

1. A seat lock with coaxial gear clutch, comprising a sealing plate (1), a cable plate (2), and a buckle plate (3), wherein the sealing plate (1) cooperates with the buckle plate (3), the buckle plate (3) and the cable plate (2) are rotatably disposed, the buckle plate (3) is connected to the cable plate (2) via a first return spring (4), the cable plate (2) is provided with a drive block (5), the drive block (5) is disposed to move left and right, and the drive block (5) is provided with a rack (6), characterized in that: It also includes a housing (7) with an opening for the drive block (5) to be exposed. A mounting shaft (9) is disposed inside the housing (7) and extends in the front-rear direction. A first gear (10), a first end face gear (11), a second end face gear (12), a second gear (13), and a second return spring (14) are sleeved on the mounting shaft (9). The first gear (10) and the second gear (13) are respectively connected to the drive block (5) and the motor (24). The first end face gear (11) and the second end face gear (12) mesh axially on the mounting shaft (9) and are respectively connected to the first gear (10) and the second gear (13). The drive block (5) or the cable plate (2) is equipped with a baffle.

2. The seat lock with coaxial gear clutch as described in claim 1, characterized in that: The diameter of the first gear (10) is smaller than that of the second gear (13). The first gear (10) is connected to the rack (6) in a transmission connection, and the second gear (13) is connected to the motor (24) in a transmission connection.

3. A seat lock with coaxial gear clutch as described in claim 2, characterized in that: The housing (7) is also provided with a third gear (15) and a fourth gear (16) arranged coaxially. The diameter of the third gear (15) is smaller than that of the fourth gear (16). The third gear (15) meshes with the rack (6), and the fourth gear (16) meshes with the first gear (10). The first gear (10) is located in front of the second gear (13), and the third gear (15) is located in front of the fourth gear (16).

4. A seat lock with coaxial gear clutch as described in claim 3, characterized in that: The housing (7) is also provided with a fifth gear (17), a sixth gear (18), a seventh gear (19) and an eighth gear (20). The fifth gear (17) and the sixth gear (18) are coaxially arranged. The diameter of the fifth gear (17) is smaller than that of the sixth gear (18). The fifth gear (17) meshes with the second gear (13). The sixth gear (18) meshes with the seventh gear (19). The seventh gear (19) and the eighth gear (20) are coaxially arranged. The diameter of the seventh gear (19) is smaller than that of the eighth gear (20). The eighth gear (20) is connected to the output shaft of the motor (24) for transmission. The fifth gear (17) is located behind the sixth gear (18). The seventh gear (19) is located behind the eighth gear (20).

5. A seat lock with coaxial gear clutch as described in claim 4, characterized in that: The output shaft of the motor (24) is provided with a helical tooth (21), which meshes with the eighth gear (20).

6. A seat lock with coaxial gear clutch as described in claim 5, characterized in that: The output shaft of the motor (24) extends vertically.

7. A seat lock with coaxial gear clutch as described in claim 1, characterized in that: The front of the sealing plate (1) is defined as the front and the back as the back. The cable plate (2) and the buckle plate (3) are rotatably disposed on the back of the sealing plate (1). The cable plate (2) extends forward with a stop arm (22). The stop arm (22) cooperates with the bottom wall of the sealing plate (1). The stop block is integrally disposed with the sealing plate (1).

8. A seat lock with coaxial gear clutch as described in claim 7, characterized in that: The cable plate (2) extends forward with a driven arm (23), and the drive block (5) extends forward with a drive arm (8), which cooperates with the driven arm (23).

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