Rotating seat locking mechanism

Abstract

The invention discloses a rotary seat locking mechanism which comprises a fixed disc and a movable disc rotationally matched with the fixed disc, a gear ring is fixedly installed on the fixed disc, and the gear ring is provided with an annular tooth part; a locking block and a transmission assembly controlling the locking block to slide are installed on the movable disc in a sliding mode, and locking teeth matched with the annular tooth part are arranged on the side portion of the locking block. The transmission assembly controls the locking block to slide, and the locking teeth can be switched between meshing and separation of the locking teeth and the annular tooth part. The stepless locking device has the beneficial effects that stepless locking is achieved, noise or shaking is avoided, the locking effect is good, and use is flexible.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a rotating seat locking mechanism. Background Art

[0002] With the continuous updating of automobiles, the automotive industry is developing towards intelligence and electrification, and the market requirements for seats are getting higher and higher. They must not only meet the passengers' requirements for seat comfort, but also meet the passengers' requirements for seat functionality, including the demand for rotating seats. Rotating seats can meet the various communication modes required by customers and provide convenience and comfort for various scenarios such as business negotiations, family outings, and friends' gatherings.

[0003] There is a turntable device at the bottom of the swivel seat, which drives the entire seat to rotate, so that the seat can be adjusted to different angles. After the seat rotation angle is adjusted, in order to ensure its stability, it is often necessary to add an additional locking structure to the turntable to ensure that the turntable can be stably kept in the stop position, thereby improving riding comfort and safety.

[0004] In the prior art, there are usually two types of locking mechanisms. One is that an integral claw-shaped or tooth-shaped component is inserted into a corresponding lock hole to achieve locking. There is a matching gap between the outline of the claw-shaped component or the tooth-shaped component and the outline of the lock hole, which is easy to cause noise and shaking during driving; the other is that a pin is inserted into the lock hole between the fixed disk and the rotating disk to achieve locking. Both locking methods cannot achieve stepless adjustment. Generally, the locking mechanism only exists at the design position and the 180-degree position, with a single usage scenario and low flexibility. Summary of the invention

[0005] In view of this, the present invention provides a rotating seat locking mechanism, the purpose of which is to achieve stepless locking of the rotating seat and solve the noise and shaking problems existing after the existing rotating seat is locked.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A rotating seat locking mechanism comprises a fixed plate and a movable plate rotatably matched with the fixed plate, wherein a gear ring is fixedly mounted on the fixed plate, and the gear ring has an annular tooth portion; a locking block and a transmission assembly for controlling the sliding of the locking block are slidably mounted on the movable plate, and a locking tooth adapted to the annular tooth portion is provided on the side of the locking block; the sliding of the locking block is controlled by the transmission assembly, so that the locking tooth can be switched between engagement and separation with the annular tooth portion.

[0008] With the above structure, the slidable lock block is controlled to engage and disengage with the annular tooth portion through the transmission component, so that the seat can be stably locked when rotated to any position. The structure is simple, the use is flexible, and stepless adjustment can be achieved.

[0009] Preferably, the transmission assembly includes a driving component slidably mounted on the moving disk, the driving component is provided with a strip hole, the locking block is provided with a guide column slidably sleeved in the strip hole, and the length direction of the strip hole and the sliding direction of the locking block form an angle; the driving component is controlled to slide back and forth, and the locking block can be forced to slide back and forth under the guidance and cooperation of the strip hole and the guide column. With the above structure, the reciprocating sliding of the locking block can be controlled by the driving component, and the engagement and separation of the locking teeth and the annular teeth can be adjusted by adjusting the length or angle of the strip hole, which is compact and flexible.

[0010] Preferably, the transmission assembly further comprises a return spring and a zipper, wherein the return spring is installed between the driving component and the movable plate, and the zipper is connected to the end of the driving component away from the return spring. With the above structure, the drive component is driven by the zipper to separate the lock teeth from the annular tooth portion, and after adjusting to the ideal position, the return spring can reset it and ensure the effective locking of the lock teeth and the annular tooth portion.

[0011] As a preference, the far end of the zipper is connected to an electric drive device. With the above structure, the locking mechanism can be controlled electrically or manually.

[0012] Preferably, a seat plate is fixed on the movable disk, and a first slide groove and a second slide groove are arranged vertically and connected on the seat plate, the locking block is slidably installed in the first slide groove, and a positioning slider is slidably installed in the second slide groove on the lower side of the driving component, and the end of the locking block away from the locking tooth has a first positioning inclined surface, and the side of the positioning slider is provided with a second positioning inclined surface adapted to the first positioning inclined surface. With the above structure, the first positioning inclined surface and the second positioning inclined surface are adaptively abutted, and the self-locking angle is determined according to the materials of the positioning slider and the locking block, so that the inclination angle of the second positioning inclined surface is less than or equal to the self-locking angle, and the positioning slider and the locking block can achieve self-locking, ensuring a stable locking effect.

[0013] As a preferred embodiment, the tooth width of the annular tooth portion is 0.5-1.5 mm, and the tooth groove width is 0.6-1.8 mm. With the above structure, the tooth shape is finer, the matching clearance between the locking teeth and the annular tooth portion is small, the locking effect is good, and the seat does not shake or make noise.

[0014] As a preferred embodiment, the gear ring is an inner gear ring, and two sets of the locking blocks and the transmission components are symmetrically mounted on the moving plate. With the above structure, the locking is more stable.

[0015] As a preference, the two groups of transmission components are arranged centrally and symmetrically about the center of the moving disc. With the above structure, a better locking effect can be achieved.

[0016] As a preference, a toothed disc is fixed on the moving disc, a driving motor is fixed on the fixed disc, and an output shaft of the driving motor is connected to a gear meshing with the toothed disc. With the above structure, the swivel seat can be electrically adjusted.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The locking and unlocking of the rotating seat is achieved by the engagement and separation of the lock teeth and the annular teeth. The annular teeth are fine teeth, and the seat can be kept stopped when it is rotated to any position, realizing stepless adjustment.

[0019] 2. The tooth block and the positioning slider are butted against each other by an inclined surface. When in the locked state, the return spring pulls the driving component to make the locking teeth and the annular teeth mesh more closely, with a small matching gap, thus avoiding noise and shaking.

[0020] 3. The locking block can slide under the guidance of the strip hole and the guide column, the driving plate can cover the positioning slider and the locking block in the vertical direction, and the first positioning inclined surface is always in contact with the second positioning inclined surface, which can balance the force of the locking block and make the locking mechanism more stable.

[0021] 4. The seat rotation and locking can be done manually or electrically, which can meet various demand modes and is highly flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 A schematic diagram showing the connection status of the driving component 3;

[0024] Figure 3 A schematic diagram showing a first chute 6a and a second chute 6b;

[0025] Figure 4 It is a partial cross-sectional view of the present invention;

[0026] Figure 5 A schematic diagram showing the structure of the transmission component C;

[0027] Figure 6 It is a schematic diagram showing the meshing of the toothed disc 7 and the gear 9. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments and drawings.

[0029] like Figure 1As shown, a rotary seat locking mechanism includes a fixed plate A and a movable plate B that rotates with the fixed plate A. When applied to a car seat, the fixed plate A is installed on the base slide rail, and the movable plate B is connected to the bottom of the car seat. A gear ring 1 with an annular tooth portion 1a is fixedly installed on the fixed plate A, and a locking block 2 is installed on the movable plate B. The side of the locking block 2 is provided with a locking tooth 2a adapted to the annular tooth portion 1a. The locking block 2 can slide relative to the movable plate B. The locking block 2 can be controlled by the transmission component C arranged on the movable plate B to move so as to achieve the engagement and separation of the locking tooth 2a with the annular tooth portion 1a, that is, the locking and unlocking of the rotary seat. The tooth parameters of the annular tooth portion 1a are a tooth width of 0.5-1.5mm, preferably 0.75mm; a tooth groove width of 0.6-1.8mm, preferably 0.82mm. Under such tooth parameter conditions, fine tooth engagement can be formed, the matching clearance is small, there is no noise or shaking, and the rotary seat can be maintained at any position to achieve stepless locking.

[0030] like Figure 2 and Figure 3 As shown, a seat plate 6 is fixed on the movable disk, and a first slide groove 6a is provided on the seat plate 6 along the radial direction of the movable disk B, and a second slide groove 6b is also provided perpendicular to the first slide groove 6a, and the middle of the second slide groove 6b is connected with the first slide groove 6a, and the lock block 2 is slidably installed in the first slide groove 6a. The transmission assembly C includes a driving component 3, a positioning slider 3c, a reset spring 4 and a zipper 5. The driving component 3 includes a horizontal driving plate 31 and two mounting vertical plates 32 perpendicular to the driving plate 31 on both sides along the length direction. The two mounting vertical plates 32 are used to connect the reset spring 4 and the zipper 5 respectively. The driving plate 31 is provided with a strip hole 3a, and the length direction of the strip hole 3a has an angle with the sliding direction of the lock block 2. The lock block 2 is provided with a guide column 2c that is slidably sleeved in the strip hole 3a. The positioning slider 3c is fixedly connected to the lower side of the driving component 3 and slidably installed in the second slide groove 6b. The end of the locking block 2 away from the locking tooth 2a has a first positioning inclined surface 2b, and the side of the positioning slider 3c is provided with a second positioning inclined surface 3c1 adapted to the first positioning inclined surface 2b, and the second positioning inclined surface 3c1 is parallel to the strip hole 3a.

[0031] like Figure 2 and Figure 5As shown, in this embodiment, when the locking mechanism is in the locked state, the reset spring 4 pulls the driving component 3 by means of the pulling force, so that the positioning slider 3c fixed to the driving component 3 abuts against the locking block 2, and the positioning slider 3c and the locking block 2 abut against each other through the inclined surface, and the positioning slider 3c provides a supporting force to the locking block 2, and the supporting force is at an acute angle to the sliding direction of the locking block 2, which can make the locking teeth 2a and the annular tooth portion 1a mesh more tightly, eliminate the free gap, and achieve a good locking effect. In addition, the self-locking angle is determined according to the materials of the positioning slider 3c and the locking block 2, so that the inclination angle 3c1 of the second positioning inclined surface is less than or equal to the self-locking angle, and the positioning slider 3c and the locking block 2 can achieve self-locking, ensuring a stable locking effect. The far end of the zipper 5 is connected to an electric drive device or a manual forward shifter. By pulling the driving component 3 manually or electrically, the driving component 3 and the positioning slider 3c can slide along the second slide groove 6b in a direction away from the reset spring 4, and the locking block 2 can slide along the first slide groove 6a in a direction away from the annular tooth portion 1a under the guidance and cooperation of the strip hole 3a and the guide column 2c to achieve unlocking. Of course, the driving component 3 moves in the opposite direction, and can also push the locking block 2 toward the annular tooth portion 1a under the guidance and cooperation of the strip hole 3a and the guide column 2c to achieve locking. In this process, the driving plate 31 can cover the positioning slider 3c and the locking block 2 in the vertical direction, and the first positioning inclined surface 2b is always in contact with the second positioning inclined surface 3c1, which can balance the force of the locking block 2 and make the locking mechanism more stable.

[0032] like Figure 1 As shown, the gear ring 1 can be an inner gear ring or an outer gear ring, and the corresponding locking block 2 can be installed on the inner or outer side of the gear ring 1 to achieve locking. In this embodiment, the gear ring 1 is an inner gear ring, and two sets of locking blocks 2 and transmission components C are symmetrically installed on the movable plate B, and the two sets of transmission components C are centrally symmetrical about the center of the movable plate B, that is, the reset spring 4 pulls the driving component 3 in opposite directions, and the force is balanced, which can better lock and avoid shaking.

[0033] like Figure 6 As shown, a toothed disc 7 is fixedly provided in the middle of the movable disc B, and a driving motor 8 is fixedly provided on the fixed disc A. The output shaft of the driving motor 8 is connected to a gear 9 meshing with the toothed disc 7. The driving motor 8 drives the gear 9 to rotate, which can drive the movable disc B to rotate, thereby realizing the seat rotation control.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A rotary seat locking mechanism, comprising a fixed plate (A) and a movable plate (B) rotatably matched with the fixed plate (A), characterized in that: A gear ring (1) is fixedly mounted on the fixed plate (A), and the gear ring (1) has an annular tooth portion (1a); A locking block (2) and a transmission assembly (C) for controlling the sliding of the locking block (2) are slidably mounted on the movable disk (B); a locking tooth (2a) adapted to the annular tooth portion (1a) is provided on the side of the locking block (2); By controlling the sliding of the locking block (2) through the transmission component (C), the locking tooth (2a) can be switched between engagement and separation with the annular tooth portion (1a).

2. A rotating seat locking mechanism according to claim 1, characterized in that: The transmission assembly (C) comprises a driving component (3) slidably mounted on a movable disk (B), the driving component (3) being provided with a strip hole (3a), the locking block (2) being provided with a guide column (2c) slidably sleeved in the strip hole (3a), and an angle being formed between the length direction of the strip hole (3a) and the sliding direction of the locking block (2); the driving component (3) is controlled to slide back and forth, and the locking block (2) can be forced to slide back and forth under the guiding cooperation of the strip hole (3a) and the guide column (2c).

3. A rotating seat locking mechanism according to claim 2, characterized in that: The transmission assembly (C) further comprises a return spring (4) and a zipper (5), wherein the return spring (4) is installed between the driving component (3) and the movable plate (B), and the zipper (5) is connected to an end of the driving component (3) away from the return spring (4).

4. A rotating seat locking mechanism according to claim 3, characterized in that: The far end of the zipper (5) is connected to an electric drive device.

5. The rotating seat locking mechanism according to claim 2, characterized in that: The movable disk (B) is fixedly provided with a seat plate (6), and the seat plate (6) is provided with a first slide groove (6a) and a second slide groove (6b) arranged vertically and connected to each other. The locking block (2) is slidably installed in the first slide groove (6a), and the lower side of the driving component (3) has a positioning slider (3c) slidably installed in the second slide groove (6b). The end of the locking block (2) away from the locking tooth (2a) has a first positioning inclined surface (2b), and the side of the positioning slider (3c) is provided with a second positioning inclined surface (3c1) adapted to the first positioning inclined surface (2b).

6. The rotating seat locking mechanism according to claim 1, characterized in that: The tooth width of the annular tooth portion (1a) is 0.5-1.5 mm, and the tooth groove width is 0.6-1.8 mm.

7. The rotating seat locking mechanism according to claim 1, characterized in that: The gear ring (1) is an internal gear ring, and two sets of locking blocks (2) and a transmission assembly (C) are symmetrically mounted on the moving disc (B).

8. A rotating seat locking mechanism according to claim 7, characterized in that: The two groups of transmission components (C) are arranged symmetrically about the center of the moving plate (B).

9. The rotating seat locking mechanism according to claim 1, characterized in that: A toothed disc (7) is fixedly arranged on the movable disc (B), a driving motor (8) is fixedly arranged on the fixed disc (A), and an output shaft of the driving motor (8) is connected to a gear (9) meshing with the toothed disc (7).

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