Large-angle rotating seat mechanism

Abstract

The utility model relates to a large-angle rotary seat mechanism, which is characterized in that a main plate and a toothed plate which are respectively fixed on a seat basin fixed disc and a seat basin movable disc which are concentrically arranged are rotatably mounted relative to each other, and a lock plate component is radially and movably mounted on the main plate and is meshed with the toothed plate in a locked state; the control disc is arranged between the lock plate assembly and the toothed plate and pulls the lock plate assembly inwards in the radial direction in the free rotation state so as to prevent the lock plate assembly from being meshed with the toothed plate, and the stroke disc is located between the control disc and the toothed plate, is connected to the toothed plate in a non-relative-rotation mode and is provided with an outer ring and an inner ring which are fixedly connected through a connecting part. A sliding groove is formed in the non-connecting portion between the outer ring and the inner ring so as to limit the free stroke. According to the utility model, the stroke range of the sliding chute is limited, and the structures of the lock plate assembly and the control panel are correspondingly changed, so that the rotary seat can realize large-angle adjustment, for example, the free stroke of 270 degrees in the whole circle range can be realized.

Description

Technical Field

[0001] The utility model relates to a vehicle seat, and more particularly to a large-angle rotating seat mechanism. Background Art

[0002] The vehicle seat backrest is rotatably mounted on the seat basin via a recliner. Passengers can adjust the backrest's tilt angle within the recliner's free travel to suit their comfort needs and then lock the backrest at the desired angle using the recliner. The maximum free travel of the recliner is known to be 156°.

[0003] The seat of a swivel seat in a vehicle is rotatably mounted on a base via a turntable mechanism. Passengers can adjust the seat's orientation as needed and lock the seat in the desired position using the turntable mechanism. Conventional turntable mechanisms lock by inserting a locking pin into a lockhole on a fixed plate. These mechanisms typically have only two locking positions: 0° and 180°.

[0004] Conventional turntable mechanisms cannot meet the multi-position locking requirements of rotating seats, and conventional recliners cannot meet the wide-angle free travel requirements of rotating seats. For example, a rotating seat has four locking requirements: the seat is locked in the forward position for normal driving or riding; the seat is locked inward at 90° so that the passenger can face other passengers in the same row; the seat is locked in the outward position at approximately 45° for resting or observing the outside of the vehicle; and the seat is locked in the rearward position at 180° so that the passenger can face other passengers in the rear row. The free travel of this rotating seat is 225°: In a clockwise direction, the turntable mechanism can rotate from an approximately 45° outward position to a forward position, a 90° inward position, and a 180° rearward position. In a counterclockwise direction, the turntable mechanism can rotate from a 180° rearward position to a 90° inward position, a forward position, and an approximately 45° outward position. Utility Model Content

[0005] In order to solve the problems of small stroke adjustment and inability to lock in multiple gears in the above-mentioned prior art, the utility model provides a large-angle rotating seat mechanism.

[0006] According to the large-angle rotating seat mechanism of the utility model, it includes a main board, a tooth plate, a lock plate assembly, a control disk, a travel disk and a tooth plate, wherein the main board and the tooth plate fixed on the concentrically arranged seat basin fixed plate and the seat basin movable plate respectively can be rotatably installed relative to each other, the lock plate assembly can be radially movably installed on the main board and engage with the tooth plate in a locked state, the control disk is arranged between the lock plate assembly and the tooth plate and pulls the lock plate assembly radially inward in a free rotation state to prevent it from engaging with the tooth plate, the travel disk is located between the control disk and the tooth plate and is connected to the tooth plate in a non-rotatable manner, the travel disk has an outer ring and an inner ring fixedly connected by a connecting part, and a sliding groove is formed between the outer ring and the inner ring at the non-connecting part to limit the free travel.

[0007] In a preferred embodiment, the rotating seat mechanism further comprises a cam, and the control disc is seated on the cam in a non-rotatable manner.

[0008] In a preferred embodiment, the locking plate assembly includes a first locking plate, a second locking plate and two third locking plates, which are alternately arranged around the cam in a manner offset by 90° from each other and are respectively provided with teeth on their radial outer sides, which engage with the inner gear ring of the gear plate to achieve locking of the main plate and the gear plate.

[0009] In a preferred embodiment, the radially inner edge of the outer ring defines a first stop track, the radially inner edge of the inner ring defines a second stop track, and the first and second stop tracks each have at least two locking recesses extending radially outward, and a non-locking portion is formed between adjacent locking recesses; in a locked state, the first lug of the first lock plate is located in the locking recess of the first stop track, and the second lug of the second lock plate is located in the locking recess of the second stop track; in a freely rotating state, the first lug of the first lock plate enters the non-locking portion of the first stop track, and the second lug of the second lock plate enters the non-locking portion of the second stop track.

[0010] In a preferred embodiment, the first locking track extends in the range of 180°-270°, and the second locking track extends in the range of 360°.

[0011] In a preferred embodiment, the control disc has a first control track, a second control track and two third control tracks, wherein the first control track interacts with the first lug, the second control track interacts with the second lug, and the third control tracks each interact with a third lug of a respective third locking plate.

[0012] In a preferred embodiment, the third lug does not have a locking function, and its height is lower than that of the first and second lugs, respectively.

[0013] In a preferred embodiment, the swivel seat mechanism further comprises a cam spring disposed in a central recess of the main plate to load the cam.

[0014] In a preferred embodiment, the rotary seat mechanism further comprises a locking cap and a driver, wherein the driver is mounted at the center of the tooth plate and fixed axially by the locking cap, and the cam is mounted on the driver in a non-rotatable manner to achieve common movement.

[0015] In a preferred embodiment, the rotating seat mechanism further comprises a hoop, wherein the hoop axially fixes the main plate and the tooth plate together but does not affect the relative rotation of the main plate and the tooth plate.

[0016] According to the large-angle rotating seat mechanism of the present invention, by limiting the travel range of the slide groove and correspondingly changing the structure of the lock plate assembly and the control disk, the rotating seat can achieve large-angle adjustment, for example, a free travel of 270° within the full circle range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of a large-angle rotating seat mechanism according to a preferred embodiment of the present utility model.

[0018] Figure 2 yes Figure 1 Schematic diagram of the control panel.

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure of the travel plate and gear plate.

[0020] Figure 4 yes Figure 1 Schematic diagram of the travel disk structure.

[0021] Figure 5 yes Figure 1 Schematic diagram of the structure of the lock plate assembly and travel plate. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0023] like Figure 1 As shown, a large-angle rotating seat mechanism according to a preferred embodiment of the present invention includes a main board 2, a tooth plate 9 and a clamp 10, wherein the main board 2 and the tooth plate 9 are respectively fixed on a concentrically arranged seat basin fixed plate and a seat basin movable plate, and the clamp 10 fixes the main board 2 and the tooth plate 9 axially together but does not affect the relative rotation of the main board 2 and the tooth plate 9, thereby realizing the rotation of the seat basin relative to the base.

[0024] like Figure 1 As shown, the large-angle rotating seat mechanism according to this embodiment also includes an anti-slip cap 1, a lock plate assembly 4, a cam 5 and a driver 6, wherein the lock plate assembly 4 includes a first lock plate 4-1, a second lock plate 4-2 and two third lock plates 4-3 radially movably mounted on the main board 2, which are alternately arranged around the cam 5 in a manner offset by 90° from each other and are respectively provided with teeth on their radial outer sides, the driver 6 is installed in the center of the tooth plate 9 and is fixed axially by the anti-slip cap 1, the cam 5 is seated on the driver 6 in a non-rotatable manner to achieve common movement, the cam 5 acts on the lock plates 4-1, 4-2, 4-3 so that the teeth of the lock plates 4-1, 4-2, 4-3 engage with the inner gear ring of the tooth plate 9, thereby achieving locking of the main board 2 and the tooth plate 9.

[0025] like Figure 1As shown, the large-angle rotating seat mechanism according to this embodiment further includes a cam spring 3 and a control plate 7, wherein the control plate 7 is axially arranged between the lock plate assembly 4 and the tooth plate 9 and is seated on the cam 5 in a relatively non-rotatable manner, and the cam spring 3 is arranged in the central recess of the main plate 2 to apply load to the cam 5. Figure 2 As shown, the control disk 7 has a first control track 7a, a second control track 7b and two third control tracks 7c, wherein the first control track 7a is aligned with the axially protruding first lug 4a of the first lock plate 4-1 (see Figure 1 and Figure 5 ) interacts with the second control track 7b and the axially protruding second lug 4b of the second lock plate 4-2 (see Figure 1 and Figure 5 ) interacts with each other, and the third control track 7c interacts with the axially protruding third lug 4c of each third lock plate 4-3 (see Figure 1 and Figure 5 ) interact with each other. Corresponding to the arrangement of control rails 7a, 7b, and 7c, the first lug 4a is positioned approximately radially in the middle of the first lock plate 4-1, while the second and third lugs 4b and 4c are positioned radially inward of the second and third lock plates 4-2 and 4-3, respectively. When the driver 6—and the cam 5 and control disk 7 driven by it—rotate against the force of the cam spring 3, the control disk 7 pulls the lock plates 4-1, 4-2, and 4-3 radially inward, that is, out of the inner gear ring of the toothed plate 9, thereby unlocking the main plate 2 and the toothed plate 9.

[0026] like Figure 1 As shown, the large-angle rotating seat mechanism according to this embodiment further includes a travel disc 8 disposed between the control disc 7 and the tooth plate 9, which is connected to the tooth plate 9 in a non-rotatable manner. Figure 3 As shown, the outer edge of the travel disc 8 has a radially inwardly recessed groove 8a, and the inner edge of the tooth plate 9 has a radially inwardly extending rib 9a, which extends into the groove 8a and is installed so that the travel disc 8 is connected to the tooth plate 9 in a non-rotatable manner.

[0027] like Figure 4 As shown, the travel disc 8 has an outer ring 8-1 and an inner ring 8-2, wherein the outer ring 8-1 and the inner ring 8-2 are fixedly connected by a connecting portion 8-3, and the outer ring 8-1 and the inner ring 8-2 form a sliding groove 8-4 at the non-connecting portion 8-3. The axially protruding first lug 4a of the first lock plate 4-1 (see Figure 1 and Figure 5) moves in the slide groove 8-4. The radial inner edge of the outer ring 8-1 (i.e., the radial outer edge of the slide groove 8-4) defines a first locking track 8a extending over a 270° range, and the radial inner edge of the inner ring 8-2 defines a second locking track 8b extending over a 360° range. The first and second locking tracks 8a, 8b each have at least two locking recesses 8aa, 8ba extending radially outward, with non-locking portions 8ab, 8bb formed between adjacent locking recesses 8aa, 8ba.

[0028] like Figure 5 As shown, the first lug 4a of the first lock plate 4-1 interacts with the first stop track 8a of the travel disc 8, and the second lug 4b of the second lock plate 4-2 interacts with the second stop track 8b of the travel disc 8, thereby achieving locking. Figure 4 The first lug 4a of the first lock plate 4-1 interacts with the first control track 7a of the control plate 7, the second lug 4b of the second lock plate 4-2 interacts with the second control track 7b of the control plate 7, and the third lugs 4c of each third lock plate 4-3 interact with the third control track 7c of the control plate 7, cooperatively achieving unlocking. It should be understood that the control plate 7 and the travel plate 8 do not function simultaneously. Specifically, the third lug 4c of the third lock plate 4-3 is lower than the first and second lugs 4a, 4b of the first and second lock plates 4-1, 4-2, allowing the travel plate 8 to only lock the first and second lock plates 4-1, 4-2 after the angle increases.

[0029] In the use position of the seat bowl, the first lug 4a of the first lock plate 4-1 is located in the locking recess 8aa of the first stop rail 8a, and the second lug 4b of the second lock plate 4-2 is located in the locking recess 8ba of the second stop rail 8b. The lock plates 4-1, 4-2, and 4-3 can interact with the tooth plate 9 without hindrance, that is, they can engage with the inner tooth ring of the tooth plate 9 to achieve locking. During the free rotation of the seat bowl, the first lug 4a of the first lock plate 4-1 enters the non-locking portion 8ab of the first stop rail 8a, and the second lug 4b of the second lock plate 4-2 enters the non-locking portion 8bb of the second stop rail 8b. The non-locking portions 8ab and 8bb form stoppers for the lock plates 4a, 4b, and 4c to prevent the lock plates 4a, 4b, and 4c from engaging with the inner tooth ring of the tooth plate 9, making it impossible to lock. When the seat bowl sweeps out the free stroke, the first and second lugs 4a, 4b of the first and second locking plates 4-1, 4-2 re-enter the locking recesses 8aa and 8ba for locking.

[0030] In this embodiment, the first locking track 8a extends over a wide free travel of 270°. Four locking recesses 8aa are located on the first locking track 8a for achieving locking, corresponding, for example, to the approximately 45° outward position, the forward position, the 90° inward position, and the 180° rearward position of the swiveling seat, thereby meeting four locking requirements. It should be understood that the 270° and four positions are provided for illustrative purposes only and are not intended to be limiting. By adjusting the position and number of the locking recesses 8aa as needed, the locking position can be freely set within the free travel range.

[0031] The existing technology can only achieve adjustment of the rotating seat within a range of 156°. The adjustment range of the rotating seat mechanism is greater than 156° and can be called a large angle. The present invention expands the travel range of the travel disk 8 and changes the structure of the lock plate assembly 4 and the control disk 7 accordingly, so that the rotating seat can achieve large-angle adjustment, for example, it can achieve a free travel of 270° within the full circle. In fact, the turntable mechanism of the present invention is an improvement on the known manual recliner. It can rotate freely within a fixed angle range and realize the locking function within other angle ranges. It not only realizes modular design, but also can meet all the strength requirements of the rotating seat with the help of the rich strength specifications of the manual recliner.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Various modifications are possible to the above embodiments of the present invention. In other words, any simple, equivalent changes and modifications made in accordance with the claims and description of the present invention fall within the scope of protection of the present invention. Anything not fully described in this invention represents conventional technology.

Claims

1. A large-angle rotating seat mechanism, characterized in that: The rotating seat mechanism includes a main board, a tooth plate, a lock plate assembly, a control disk, a travel disk and a tooth plate, wherein the main board and the tooth plate, which are respectively fixed on the concentrically arranged seat basin fixed plate and the seat basin movable plate, can be rotatably installed relative to each other, the lock plate assembly can be radially movably installed on the main board and engage with the tooth plate in a locked state, the control disk is arranged between the lock plate assembly and the tooth plate and pulls the lock plate assembly radially inward in a free rotation state to prevent it from engaging with the tooth plate, the travel disk is located between the control disk and the tooth plate and is connected to the tooth plate in a non-rotatable manner, the travel disk has an outer ring and an inner ring fixedly connected by a connecting portion, and a sliding groove is formed between the outer ring and the inner ring at the non-connecting portion to limit the free stroke.

2. The rotating seat mechanism according to claim 1, characterized in that: The rotary seat mechanism further comprises a cam, and the control disc is seated on the cam in a relatively non-rotatable manner.

3. The rotating seat mechanism according to claim 2, characterized in that: The locking plate assembly includes a first locking plate, a second locking plate and two third locking plates, which are alternately arranged around the cam in a manner offset by 90 degrees from each other and are respectively provided with teeth on their radial outer sides. The teeth engage with the inner gear ring of the gear plate to achieve locking of the main plate and the gear plate.

4. The rotating seat mechanism according to claim 3, characterized in that: The radially inner edge of the outer ring defines a first stop track, and the radially inner edge of the inner ring defines a second stop track. The first and second stop tracks each have at least two locking recesses extending radially outward, and a non-locking portion is formed between adjacent locking recesses. In a locked state, the first lug of the first lock plate is located in the locking recess of the first stop track, and the second lug of the second lock plate is located in the locking recess of the second stop track. In a freely rotating state, the first lug of the first lock plate enters the non-locking portion of the first stop track, and the second lug of the second lock plate enters the non-locking portion of the second stop track.

5. The rotating seat mechanism according to claim 4, characterized in that: The first stop track extends within a range of 180°-270°, and the second stop track extends within a range of 360°.

6. The rotating seat mechanism according to claim 4, characterized in that: The control disc has a first control track, a second control track and two third control tracks, wherein the first control track interacts with the first lug, the second control track interacts with the second lug, and the third control tracks each interact with a third lug of each third locking plate.

7. The rotating seat mechanism according to claim 6, characterized in that: The third lug does not have a locking function, and its height is lower than that of the first and second lugs respectively.

8. The rotating seat mechanism according to claim 2, wherein: The swivel seat mechanism further includes a cam spring disposed in the central recess of the main plate to load the cam.

9. The rotating seat mechanism according to claim 2, wherein: The rotary seat mechanism also includes a locking cap and a driver, wherein the driver is installed at the center of the tooth plate and is fixed axially by the locking cap, and the cam is seated on the driver in a non-rotatable manner to achieve common movement.

10. The rotating seat mechanism according to claim 1, wherein: The rotating seat mechanism further comprises a hoop, wherein the hoop axially fixes the main plate and the tooth plate together but does not affect the relative rotation of the main plate and the tooth plate.

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