Automobile seat turntable friction locking device

Abstract

The invention discloses an automobile seat rotating disc friction locking device which comprises a base and a movable disc assembly rotationally arranged on the base, the top of the movable disc assembly is used for installing an automobile seat, a friction brake ring is fixedly arranged on the base, and a friction brake block and a driving mechanism for controlling the friction brake block to move are movably connected to the movable disc assembly; the friction brake block is arranged on the inner side or the outer side of the friction brake ring, and the driving mechanism drives the friction brake block to move and can force the friction brake block to be combined with the side portion of the friction brake ring in a friction mode. The automobile seat has the beneficial effects that through friction combination between the friction brake ring and the friction brake block and friction resistance between the friction brake ring and the friction brake block, locking can be formed between the base and the movable disc assembly, and then it is guaranteed that the automobile seat cannot shake.

Description

Technical Field

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

[0002] With the continuous development of the automotive industry, 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 need for rotating seats. Rotating seats can meet the various communication modes required by customers.

[0003] In the prior art, the rotation of the car seat is mainly achieved by setting a turntable, wherein the turntable includes a fixedly mounted base and a movable plate rotatably mounted on the top of the base, the car seat is fixedly mounted on the movable plate, and a gear plate is also arranged on the base, and a motor is arranged on the movable plate, and a gear is connected to the output end of the motor, and the gear and the gear plate are meshed for transmission, and the driving motor is operated to realize the rotation of the movable plate.

[0004] However, due to the manufacturing and assembly processes, there will be gaps between the gear plates, causing the seats to shake when passengers sit in them. This shaking will affect riding comfort. Summary of the invention

[0005] In view of this, the present invention provides a friction locking device for a car seat turntable, aiming to prevent the seat from shaking.

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

[0007] A rotating disk friction locking device for a car seat comprises a base and a movable disk assembly rotatably arranged on the base, wherein the top of the movable disk assembly is used to install the car seat, and is characterized in that: a friction brake ring is fixedly provided on the base, a friction brake block and a driving mechanism for controlling the movement of the friction brake block are movably connected to the movable disk assembly; the friction brake block is arranged on the inner side or the outer side of the friction brake ring, and the driving mechanism drives the friction brake block to move, and can force the friction brake block to frictionally engage with the side of the friction brake ring.

[0008] With the above structure, through the frictional engagement between the friction brake block and the friction brake ring, the friction resistance can be utilized to form a lock between the base and the moving plate, thereby effectively preventing the seat from shaking.

[0009] Preferably, one end of the friction brake block is rotatably connected to the moving disc assembly, and the driving mechanism drives the friction brake block to rotate so that the friction brake block is frictionally coupled to the side of the friction brake ring. The above structure has the advantages of simple structure, small space occupation, and convenient friction locking control.

[0010] Preferably, there are two groups of friction brake blocks, which are symmetrically arranged inside the friction brake ring. The driving mechanism includes a slider that can move relative to the moving disc assembly, two linkage plates hinged at both ends of the slider, and a transmission assembly that drives the slider to move. The ends of the two linkage plates away from the slider are respectively hinged on the two groups of friction brake blocks. With the above structure, the contact area with the friction brake ring is increased through the design of two groups of friction brake blocks, so that the locking between the base and the moving disc assembly is more stable, thereby ensuring that the seat will not shake.

[0011] Preferably, the transmission assembly includes a motor and a screw driven by the motor, and the middle portion of the slider is threadedly sleeved on the screw. With the above structure, the friction brake block and the friction brake ring can be frictionally engaged by driving the slider on the screw, which is very convenient to operate.

[0012] Preferably, the movable disc assembly includes a movable disc and a mounting disc fixedly arranged on the top of the movable disc, and the driving mechanism and the friction brake block are both arranged on the mounting disc. The above structure can facilitate the installation of the driving mechanism and the friction brake block, and can also ensure the versatility of the entire friction locking device.

[0013] Preferably, the transmission assembly and the slider are both arranged at the top of the mounting plate, the linkage plate and the friction brake block are both arranged at the bottom of the mounting plate, the slider and the linkage plate are hinged together by a first pin shaft, the mounting plate is provided with a first strip hole, the first pin shaft is inserted into the first strip hole, the linkage plate and the friction brake block are hinged together by a second pin shaft, the mounting plate is provided with a second strip hole, the second pin shaft is inserted into the second strip hole, and the end of the friction brake block away from the linkage plate is rotatably mounted at the bottom of the mounting plate by a third pin shaft. With the above structure, when the slider moves on the screw rod, it can drive the linkage plate to rotate around the second pin shaft, and then drive the friction brake block to rotate around the third pin shaft as the pivot point through the linkage plate.

[0014] Preferably, the friction brake block is an arc block, and the outer ring of the friction brake block has a friction segment adapted to the inner side of the friction brake ring. The above structure increases the contact area between the friction brake block and the friction brake ring, further ensuring stable locking between the base and the moving disc assembly.

[0015] Preferably, a gear ring is provided on the base, a driving motor is provided on the top of the mounting plate, a gear is connected to the output end of the driving motor, and the gear and the gear ring are meshed with each other. The above structure ensures that the moving plate assembly can be electrically rotated.

[0016] Preferably, the base is provided with an annular installation cavity with an open upper end, and an outer positioning ring groove and an inner positioning ring groove are formed on both sides of the inner side of the annular installation cavity; the movable plate is rotatably connected in the annular installation cavity, and the movable plate has an outer support ring located in the outer positioning ring groove and an inner support ring located in the inner positioning ring groove; a rotating support assembly is installed between the outer support ring and the upper and lower sides of the outer positioning ring groove, and between the inner support ring and the upper and lower sides of the inner positioning ring groove. The above structure ensures that the movable plate can be rotatably supported on the top of the base, and also ensures that the movable plate rotates more smoothly.

[0017] Preferably, among the four groups of rotating support components, three groups are ball bearing structures, and the remaining group is a sliding friction structure, and the sliding friction structure is arranged between the inner support ring and the upper side of the inner positioning ring groove. With the above structure, the combination of three groups of ball bearing structures and one group of sliding friction structures ensures that the moving plate can be stably rotated and supported on the top of the base, and the sliding friction structure increases the friction resistance between the moving plate and the base, further ensuring that the car seat will not shake.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The automobile seat turntable friction locking device provided by the present invention can form a lock between the base and the moving plate assembly by providing a friction brake ring and a friction brake block, utilizing the friction resistance when the two are in contact with each other, thereby ensuring that the seat will not shake. At the same time, during the rotation of the seat, the automobile seat turntable friction locking device also serves as an emergency brake.

[0020] 2. Through the friction locking of the friction brake ring and the friction brake block, stepless adjustment locking can be achieved to ensure that the seat can be locked at any angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of a friction locking device for a car seat turntable;

[0022] Figure 2 A schematic diagram showing the structure of the driving mechanism A;

[0023] Figure 3 To show the structural diagram of the installation plate 2b (the slider 6 is hidden);

[0024] Figure 4 It is a cross-sectional view of a friction locking device for a rotating disc of a car seat;

[0025] Figure 5 for Figure 4 A partial enlarged view of

[0026] Figure 6 for Figure 4A partial enlarged view (the rotating support component is hidden);

[0027] Figure 7 It is a schematic structural diagram of the friction brake block 8. DETAILED DESCRIPTION

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

[0029] like Figures 1 to 6 As shown, a rotating disc friction locking device for a car seat comprises a base 1 and a movable disc assembly 2 rotatably mounted on the top of the base 1, wherein the base 1 is fixedly mounted on the bottom of the car or the seat rail, and the top of the movable disc assembly 2 is used to fix the car seat. A friction brake ring 3 is fixedly mounted on the base 1, and a friction brake block 8 and a driving mechanism A for controlling the movement of the friction brake block 8 are movably connected to the movable disc assembly 2. The friction brake block 8 is arranged on the inner side or the outer side of the friction brake ring 3. The driving mechanism A drives the friction brake block 8 to move, and can force the friction brake block 8 to frictionally fit the side of the friction brake ring 3.

[0030] The driving mechanism A drives the friction brake block 8 to rub against the side of the friction brake ring 3, and the friction resistance between the friction brake block 8 and the friction brake ring 3 is used to form a lock between the base 1 and the movable plate assembly 2, thereby preventing the car seat from shaking.

[0031] like Figure 2 and Figure 3 As shown, one end of the friction brake block 8 is rotatably connected to the movable plate assembly 2 , and the driving mechanism A drives the friction brake block 8 to rotate in such a way that the friction brake block 8 is frictionally coupled to the side of the friction brake ring 3 .

[0032] Specifically, Figure 2 As shown, in this embodiment, there are two groups of friction brake blocks 8, which are symmetrically arranged inside the friction brake ring 3. The driving mechanism A includes a slider 6 that can move relative to the movable disc assembly 2, two linkage pieces 7 hinged at both ends of the slider 6, and a transmission assembly that drives the slider 6 to move. The ends of the two linkage pieces 7 away from the slider 6 are respectively hinged on the two groups of friction brake blocks 8. With such a design, the contact area with the friction brake ring 3 is increased by the two groups of friction brake blocks 8, ensuring that the base 1 and the movable disc assembly 2 are locked more firmly.

[0033] Furthermore, the transmission assembly includes a motor 4 and a screw rod 5 driven to rotate by the motor, and the middle portion of the slider 6 is threadedly sleeved on the screw rod 5 .

[0034] In this embodiment, the moving disc assembly 2 includes a moving disc 2a and a mounting disc 2b fixedly mounted on the top of the moving disc 2a by bolts, and the driving assembly A and the friction brake block 8 are both mounted on the mounting disc 2b.

[0035] Specifically, Figures 1 to 3 As shown, the transmission assembly and the slider 6 are installed on the top of the mounting plate 2b, and the linkage plate 7 and the friction brake block 8 are installed on the bottom of the mounting plate 2b. The slider 6 and the linkage plate 7 are hinged together through the first pin 9, the mounting plate 2b is formed with a first strip hole 2b1, and the first pin 9 is inserted into the first strip hole 2b1, the linkage plate 7 and the friction brake block 8 are hinged together through the second pin 10, the mounting plate 2b is also formed with a second strip hole 2b2, and the second pin 10 is inserted into the second strip hole 2b2, and the end of the friction brake block 8 away from the linkage plate 7 is rotatably installed at the bottom of the mounting plate 2b through the third pin 11. With such a design, when the slider 6 moves on the screw rod 5, it can drive the linkage plate 7 to rotate with the second pin shaft 10 as the turning point, and then drive the friction brake block 8 to rotate with the third pin shaft 11 as the turning point through the linkage plate 7. The first pin shaft 9 is inserted in the first strip hole 2b1 to ensure that when the motor 4 rotates, the slider 6 can move on the screw rod 5 instead of rotating with the screw rod 5. The second pin shaft 10 is inserted in the second strip hole 2b2, which ensures that the friction brake block 8 can rotate.

[0036] Through the above slider crank mechanism, the rotational force of the screw rod 5 can be amplified, so that the locking of the friction brake block 8 is further stabilized.

[0037] Specific, combined Figure 2 When the slider 6 moves along the screw rod 5 toward the center of the mounting plate 2b, it can drive the linkage plate 7 to rotate inward with the second pin shaft 10 as the turning point. At the same time, the linkage plate 7 forces the friction brake block 8 to rotate outward with the third pin shaft 11 as the turning point. When the friction brake block 8 rotates outward and contacts the inner side of the friction brake ring 3, under the influence of friction resistance, a lock can be formed between the base 1 and the moving plate 2a. When the car seat is in a rotating state, the car seat turntable friction locking device at this time plays a role of braking. When the car seat is in a prohibited state, the car seat turntable friction locking device at this time can ensure that the car seat does not shake. When the slider 6 moves along the screw rod 5 toward the direction away from the center of the mounting plate 2b, it can drive the linkage plate 7 to rotate outward with the second pin shaft 10 as the pivot point. At the same time, the linkage plate 7 forces the friction brake block 8 to rotate inward with the third pin shaft 11 as the pivot point. When the friction brake block 8 is separated from the inner side of the friction brake ring 3, the entire car seat turntable friction locking device is in an unlocked state, and the car seat can rotate normally.

[0038] like Figure 7As shown, in this embodiment, the friction brake block 8 is constructed into an arc structure, and the outer ring of the friction brake block 8 is formed with a friction segment 8a adapted to the inner side of the friction brake ring 3, and the friction segment 8a and the inner side of the friction brake ring 3 can form a friction resistance, thereby forming a lock between the base 1 and the moving plate 2a. The friction brake block 8 also includes a connecting segment 8b, and a connecting plate 8c is formed between the connecting segment 8b and the friction segment 8a. The connecting plate 8c can make the structure of the friction segment 8a more stable, and also make the entire friction brake block 8 lighter, so that the slider 6 can drive it to rotate.

[0039] like Figure 2 and Figure 4 As shown, a gear ring 12 is fixedly mounted on the base 1. In this embodiment, the gear ring 12 is an internal gear ring. A drive motor 13 is also fixedly mounted on the top of the mounting plate 2b. The output end of the drive motor 13 is connected to a gear 14. The gear 14 and the gear ring 12 can mesh with each other. With such a design, the operation of the drive motor 13 can drive the gear 14 to rotate around the gear ring 12, thereby electrically controlling the rotation of the car seat.

[0040] like Figure 5 and Figure 6 As shown, the base 1 is provided with an annular mounting cavity 1a with an open upper end, and an outer positioning ring groove 1a1 and an inner positioning ring groove 1a2 are formed on both sides of the inner side of the annular mounting cavity 1a, respectively. The movable disc 2a is rotatably mounted in the annular mounting cavity 1a, and the movable disc 2a has an outer support ring 2a1 located in the outer positioning ring groove 1a1 and an inner support ring 2a2 located in the inner positioning ring groove 1a2, and a rotation support assembly is installed between the outer support ring 2a1 and the upper and lower sides of the outer positioning ring groove 1a1, and between the inner support ring 2a2 and the upper and lower sides of the inner positioning ring groove 1a2. Such a design can ensure that the movable disc 2a is stably supported on the base 1.

[0041] Specifically, in the present embodiment, among the four groups of rotating support components, three groups are ball structures, and the remaining group is a sliding friction structure. In the present embodiment, the sliding friction structure is preferably arranged between the inner support ring 2a2 and the upper side of the inner positioning ring groove 1a2. With such a design, by replacing the rotating support structure with the traditional four groups of ball structures with a combination of three groups of ball structures and one group of sliding friction structures, it ensures that the moving plate 2a can be stably supported on the base 1 for rotation, and at the same time, the shaking clearance of the moving plate 2a is eliminated by the sliding friction structure, thereby further ensuring that the car seat will not shake.

[0042] Furthermore, the ball structure includes a retaining frame 15 fixedly mounted on the top of the base 1 and the top of the outer support ring 2a1, and a ball assembly 16 distributed in an annular array on the outer ring of the retaining frame 15. In this embodiment, the three retaining frames 15 are all annular structures, and the sliding friction structure is a friction block 17 arranged between the inner support ring 2a2 and the upper side of the inner positioning ring groove 1a2. In this embodiment, the friction block 17 is an arc block, and a total of four friction blocks 17 are installed between the inner support ring 2a2 and the upper side of the inner positioning ring groove 1a2. The four friction blocks 17 are distributed in an annular shape, and the four friction blocks 17 are all made of POM material. Such a design can make the sliding friction structure lighter and have better wear resistance.

[0043] For example Figure 5 and Figure 6 As shown, a first pressing ring 18 and a second pressing ring 19 are fixedly mounted on the base 1, and the radius of the first pressing ring 18 is larger than that of the second pressing ring 19. The outer ring of the first pressing ring 18 and the inner ring of the second pressing ring 19 are both tightly attached to the base 1 and fixedly mounted by bolts. An outer positioning ring groove 1a1 is formed between the inner ring of the first pressing ring 18 and the base 1, and an inner positioning ring groove 1a2 is formed between the outer ring of the second pressing ring 19 and the base 1. Such a design can facilitate the assembly of the entire moving disk 2a and the rotating support assembly. In addition, in this embodiment, the friction brake ring 3 and the gear ring 12 are both fixedly mounted on the inner ring of the second pressing ring 19.

[0044] 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 rotating disc friction locking device for a car seat, comprising a base (1), and a movable disc assembly (2) rotatably arranged on the base (1), wherein the top of the movable disc assembly (2) is used to mount a car seat, and is characterized in that: A friction brake ring (3) is fixedly provided on the base (1), and a friction brake block (8) and a driving mechanism (A) for controlling the movement of the friction brake block (8) are movably connected to the movable disc assembly (2); The friction brake block (8) is arranged inside or outside the friction brake ring (3), and the driving mechanism (A) drives the friction brake block (8) to move, which can force the friction brake block (8) to frictionally engage with the side of the friction brake ring (3).

2. The automobile seat turntable friction locking device according to claim 1, characterized in that: One end of the friction brake block (8) is rotatably connected to the moving disc assembly (2), and the driving mechanism (A) drives the friction brake block (8) to rotate so that the friction brake block (8) is frictionally coupled to the side of the friction brake ring (3).

3. The automobile seat turntable friction locking device according to claim 2, characterized in that: There are two groups of friction brake blocks (8), which are symmetrically arranged on the inner side of the friction brake ring (3). The driving mechanism (A) comprises a slider (6) movable relative to the movable plate assembly (2), two linkage plates (7) hinged at both ends of the slider (6), and a transmission assembly driving the slider (6) to move. The ends of the two linkage plates (7) away from the slider (6) are respectively hinged on the two groups of friction brake blocks (8).

4. The automobile seat turntable friction locking device according to claim 3, characterized in that: The transmission assembly comprises a motor (4) and a screw rod (5) driven to rotate by the motor (4), and the middle portion of the slider (6) is threadedly sleeved on the screw rod (5).

5. The automobile seat turntable friction locking device according to claim 4, characterized in that: The moving disc assembly (2) comprises a moving disc (2a) and a mounting disc (2b) fixedly arranged on the top of the moving disc (2a); the driving mechanism (A) and the friction brake block (8) are both arranged on the mounting disc (2b).

6. The automobile seat turntable friction locking device according to claim 5, characterized in that: The transmission assembly and the slider (6) are both arranged on the top of the mounting plate (2b), the linkage plate (7) and the friction brake block (8) are both arranged on the bottom of the mounting plate (2b), the slider (6) and the linkage plate (7) are hinged together via a first pin shaft (9), a first strip hole (2b1) is provided on the mounting plate (2b), the first pin shaft (9) is inserted into the first strip hole (2b1), the linkage plate (7) and the friction brake block (8) are hinged together via a second pin shaft (10), a second strip hole (2b2) ​​is provided on the mounting plate (2b), the second pin shaft (10) is inserted into the second strip hole (2b2), and the end of the friction brake block (8) away from the linkage plate (7) is rotatably mounted on the bottom of the mounting plate (2b) via a third pin shaft (11).

7. The automobile seat turntable friction locking device according to claim 6, characterized in that: The friction brake block (8) is an arc-shaped block, and the outer ring of the friction brake block (8) has a friction segment (8a) adapted to the inner side of the friction brake ring (3).

8. The automobile seat turntable friction locking device according to claim 5, characterized in that: A gear ring (12) is provided on the base (1), a driving motor (13) is provided on the top of the mounting plate (2b), an output end of the driving motor (13) is connected to a gear (14), and the gear (14) and the gear ring (12) are meshed with each other.

9. The automobile seat turntable friction locking device according to claim 5, characterized in that: The base (1) is provided with an annular installation cavity (1a) with an open upper end, and an outer positioning annular groove (1a1) and an inner positioning annular groove (1a2) are respectively formed on two sides of the interior of the annular installation cavity (1a); The movable disc (2a) is rotatably connected in the annular mounting cavity (1a), and the movable disc (2a) comprises an outer support ring (2a1) located in the outer positioning ring groove (1a1) and an inner support ring (2a2) located in the inner positioning ring groove (1a2); Rotational support components are installed between the outer support ring (2a1) and the upper and lower sides of the outer positioning ring groove (1a1), and between the inner support ring (2a2) and the upper and lower sides of the inner positioning ring groove (1a2).

10. The automobile seat turntable friction locking device according to claim 9, characterized in that: Among the four groups of rotating support components, three groups are ball bearing structures, and the remaining group is a sliding friction structure, wherein the sliding friction structure is arranged between the inner support ring (2a2) and the upper side of the inner positioning ring groove (1a2).

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