Turntable friction locking device

Abstract

The utility model discloses a 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 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 advantages 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 therefore it is guaranteed that the automobile seat cannot shake.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to a turntable friction locking device. Background Technology

[0002] As the automotive industry continues to develop, the market demands for seats are also increasing. Seats must not only meet passengers' requirements for comfort but also fulfill their functional requirements, including the need for rotating seats, which can meet various communication modes required by customers.

[0003] In the existing technology, the rotation of car seats is mainly achieved by a turntable. The turntable includes a fixedly installed base and a rotating disk rotatably installed on the top of the base. The car seat is fixedly installed on the rotating disk. A gear plate is also provided on the base. A motor is provided on the rotating disk. The output end of the motor is connected to a gear. The gear meshes with the gear plate to drive the motor, thereby realizing the rotation of the rotating disk.

[0004] However, due to the influence of manufacturing and assembly processes, there will be gaps between the gear teeth, which will cause the seat to shake when passengers sit on it, and this shaking will affect the comfort of the ride. Utility Model Content

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

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A rotary friction locking device includes a base and a movable disc assembly rotatably mounted on the base. The top of the movable disc assembly is used to mount an automobile seat. The device is characterized in that: a friction brake ring is fixedly mounted on the base; a friction brake block and a drive mechanism for controlling the movement of the friction brake block are movably connected to the movable disc assembly; the friction brake block is arranged inside or outside the friction brake ring; and the drive mechanism drives the friction brake block to move, thereby forcing the friction brake block to frictionally engage with the side of the friction brake ring.

[0008] By adopting the above structure, the frictional combination between the friction brake block and the friction brake ring can be used to lock 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, causing the friction brake block to frictionally engage with the side of the friction brake ring. This structure offers advantages such as simple structure, small space occupation, and convenient friction locking control.

[0010] Preferably, the friction brake blocks are in two sets, symmetrically arranged inside the friction brake ring. The driving mechanism includes a slider movable relative to the moving disc assembly, two linkage plates hinged to both ends of the slider, and a transmission assembly for driving the slider. The ends of the two linkage plates furthest from the slider are respectively hinged to the two sets of friction brake blocks. This structure, with its two sets of friction brake blocks, increases the contact area with the friction brake ring, resulting in a more stable lock between the base and the moving disc assembly, thus ensuring the seat does not wobble.

[0011] Preferably, the transmission assembly includes a motor and a lead screw driven by the motor, with the slider threaded onto the lead screw at its center. Using this structure, the friction brake block and friction brake ring can be frictionally engaged by the motor driving the slider to slide on the lead screw, making operation very convenient.

[0012] Preferably, the moving plate assembly includes a moving plate and a mounting plate fixedly disposed on the top of the moving plate, with the drive mechanism and the friction brake block both disposed on the mounting plate. This structure facilitates the installation of the drive mechanism and the friction brake block, while also ensuring the versatility of the entire friction locking device.

[0013] Preferably, the transmission assembly and the slider are both located on the top of the mounting plate, and the linkage plate and the friction brake block are both located on the bottom of the mounting plate. The slider and the linkage plate are hinged together by a first pin. The mounting plate has a first slotted hole, and the first pin passes through the first slotted hole. The linkage plate and the friction brake block are hinged together by a second pin. The mounting plate has a second slotted hole, and the second pin passes through the second slotted hole. The end of the friction brake block away from the linkage plate is rotatably mounted on the bottom of the mounting plate by a third pin. With the above structure, when the slider moves on the lead screw, it can drive the linkage plate to rotate around the second pin, and then drive the friction brake block to rotate around the third pin.

[0014] Preferably, the friction brake block is an arc-shaped block, and the outer ring of the friction brake block has a friction section that adapts to the inner side of the friction brake ring. This 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, the base is provided with a gear ring, and the top of the mounting plate is provided with a drive motor. The output end of the drive motor is connected to a gear, which meshes with the gear ring. This structure ensures that the moving plate assembly can rotate electrically.

[0016] Preferably, the base has an annular mounting cavity with an open upper end. An outer positioning ring groove and an inner positioning ring groove are formed on both sides of the annular mounting cavity. The movable disk is rotatably connected within the annular mounting cavity. The movable disk has an outer support ring located within the outer positioning ring groove and an inner support ring located within the inner positioning ring groove. Rotary support assemblies are installed between the upper and lower sides of the outer support ring and the outer positioning ring groove, and between the upper and lower sides of the inner support ring and the inner positioning ring groove. This structure ensures that the movable disk can be rotatably supported on the top of the base, and also ensures smoother rotation of the movable disk.

[0017] Preferably, of the four sets of rotating support components, three sets are ball bearing structures, and the remaining set is a sliding friction structure. The sliding friction structure is disposed between the inner support ring and the upper side of the inner positioning ring groove. Using this structure, the combination of three sets of ball bearing structures and one set of sliding friction structures ensures that the moving plate can rotate stably and be supported on the top of the base. Furthermore, the sliding friction structure increases the frictional resistance between the moving plate and the base, further ensuring that the car seat does not wobble.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The turntable friction locking device provided by this utility model, through the setting of friction brake ring and friction brake block, utilizes the frictional resistance when the two are in contact to form a lock between the base and the moving plate assembly, thereby ensuring that the seat will not shake. At the same time, the turntable friction locking device also plays an emergency braking role during the rotation of the seat.

[0020] 2. Through friction locking via friction brake rings and friction brake blocks, stepless adjustment locking can be achieved, ensuring that the seat can be locked at any angle. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of the rotary table friction locking device;

[0022] Figure 2 To illustrate the structural diagram of drive mechanism A;

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

[0024] Figure 4 This is a cross-sectional view of the rotary table friction locking device;

[0025] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0026] Figure 6 for Figure 4A close-up view of a section (rotary support components are hidden);

[0027] Figure 7 This is a schematic diagram of the friction brake block 8. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0029] like Figures 1 to 6 As shown, a rotary friction locking device includes a base 1 and a movable disc assembly 2 rotatably mounted on top of the base 1. The base 1 is fixedly mounted on the bottom of a car or on a 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. A friction brake block 8 and a drive 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. The drive mechanism A drives the friction brake block 8 to move, which can force the friction brake block 8 to rub against the side of the friction brake ring 3.

[0030] The friction brake block 8 is driven by the drive mechanism A to rub against the side of the friction brake ring 3. The frictional resistance between the friction brake block 8 and the friction brake ring 3 makes the base 1 and the moving disc assembly 2 locked, so that the car seat will not shake.

[0031] like Figure 2 and Figure 3 As shown, 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 in such a way that the friction brake block 8 is frictionally engaged with the side of the friction brake ring 3.

[0032] Specifically, such as Figure 2 As shown, in this embodiment, there are two sets of friction brake blocks 8, which are symmetrically arranged inside the friction brake ring 3. The drive mechanism A includes a slider 6 that can move relative to the moving disc assembly 2, two linkage plates 7 hinged to both ends of the slider 6, and a transmission assembly that drives the slider 6 to move. The ends of the two linkage plates 7 away from the slider 6 are respectively hinged to the two sets of friction brake blocks 8. This design increases the contact area with the friction brake ring 3 through the two sets of friction brake blocks 8, ensuring a more stable lock between the base 1 and the moving disc assembly 2.

[0033] Furthermore, the transmission assembly includes a motor 4 and a lead screw 5 driven by the motor to rotate, with the slider 6 threadedly sleeved on the lead screw 5 in the middle.

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

[0035] Specifically, such as Figures 1 to 3 As shown, the transmission assembly and slider 6 are mounted on the top of the mounting plate 2b, while the linkage plate 7 and friction brake block 8 are mounted on the bottom of the mounting plate 2b. The slider 6 and linkage plate 7 are hinged together by a first pin 9. A first slotted hole 2b1 is formed on the mounting plate 2b, through which the first pin 9 passes. The linkage plate 7 and friction brake block 8 are hinged together by a second pin 10. A second slotted hole 2b2 is also formed on the mounting plate 2b, through which the second pin 10 passes. The end of the friction brake block 8 furthest from the linkage plate 7 is rotatably mounted on the bottom of the mounting plate 2b via a third pin 11. With this design, when the slider 6 moves on the lead screw 5, it can drive the linkage plate 7 to rotate around the second pin 10. Then, the linkage plate 7 drives the friction brake block 8 to rotate around the third pin 11. The first pin 9 passing through the first slot 2b1 ensures that when the motor 4 rotates, the slider 6 can move on the lead screw 5, rather than rotating with the lead screw 5. The second pin 10 passing through the second slot 2b2 ensures that the friction brake block 8 can rotate.

[0036] The slider-crank mechanism described above amplifies the rotational force of the lead screw 5, making the friction brake block 8 lock more securely.

[0037] Specifically, in combination Figure 2 When the slider 6 moves along the lead screw 5 toward the center of the mounting plate 2b, it drives the linkage plate 7 to rotate inward around the second pin 10. Simultaneously, the linkage plate 7 forces the friction brake block 8 to rotate outward around the third pin 11. When the friction brake block 8 rotates outward and contacts the inner side of the friction brake ring 3, a lock is formed between the base 1 and the moving plate 2a due to frictional resistance. When the car seat is rotating, the rotary friction locking device acts as a brake. When the car seat is in a stopped state, the rotary friction locking device ensures that the car seat will not shake. When the slider 6 moves along the lead screw 5 away from the center of the mounting plate 2b, it drives the linkage plate 7 to rotate outward around the second pin 10. Simultaneously, the linkage plate 7 forces the friction brake block 8 to rotate inward around the third pin 11. When the friction brake block 8 separates from the inner side of the friction brake ring 3, the entire rotary friction locking device is unlocked, and the car seat can rotate normally.

[0038] like Figure 7As shown, in this embodiment, the friction brake block 8 is constructed with an arc-shaped structure. The outer ring of the friction brake block 8 is formed with a friction section 8a that adapts to the inner side of the friction brake ring 3. The friction section 8a and the inner side of the friction brake ring 3 can form frictional resistance, thereby locking the base 1 and the moving disk 2a. The friction brake block 8 also includes a connecting section 8b. A connecting plate 8c is formed between the connecting section 8b and the friction section 8a. The connecting plate 8c makes the structure of the friction section 8a more stable and also makes the entire friction brake block 8 lighter, making it easier for the slider 6 to drive its rotation.

[0039] like Figure 2 and Figure 4 As shown, a gear ring 12 is fixedly installed on the base 1. In this embodiment, the gear ring 12 is an internal gear ring. A drive motor 13 is also fixedly installed 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 this design, when the drive motor 13 runs, it 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 has an annular mounting cavity 1a with an open upper end. An outer positioning ring groove 1a1 and an inner positioning ring groove 1a2 are formed on both sides of the annular mounting cavity 1a. The movable disk 2a is rotatably mounted within the annular mounting cavity 1a. The movable disk 2a has an outer support ring 2a1 located within the outer positioning ring groove 1a1 and an inner support ring 2a2 located within the inner positioning ring groove 1a2. Rotary support assemblies are installed between the upper and lower sides of the outer support ring 2a1 and the outer positioning ring groove 1a1, and between the upper and lower sides of the inner support ring 2a2 and the inner positioning ring groove 1a2. This design ensures that the movable disk 2a is stably rotatably supported on the base 1.

[0041] Specifically, in this embodiment, three of the four sets of rotating support components are ball bearing structures, and the remaining set is a sliding friction structure. In this embodiment, the sliding friction structure is preferably set between the inner support ring 2a2 and the upper side of the inner positioning ring groove 1a2. With this design, by replacing the traditional four sets of ball bearing structures with a combination of three sets of ball bearing structures and one set of sliding friction structures, it ensures that the moving plate 2a can be stably rotated and supported on the base 1, while also eliminating the wobbling gap of the moving plate 2a through the sliding friction structure, further ensuring that the car seat will not shake.

[0042] Furthermore, the ball structure includes a retainer 15 fixedly installed on the top of the base 1 and the top of the outer support ring 2a1, and ball assemblies 16 arranged in a ring array on the outer ring of the retainer 15. In this embodiment, all three retainers 15 are ring structures. The sliding friction structure is a friction block 17 disposed 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-shaped block. 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 arranged in a ring, and all four friction blocks 17 are made of POM material. This design makes the sliding friction structure lighter and has better wear resistance.

[0043] For example Figure 5 and Figure 6 As shown, a first pressure ring 18 and a second pressure ring 19 are fixedly installed on the base 1, and the radius of the first pressure ring 18 is larger than the radius of the second pressure ring 19. The outer ring of the first pressure ring 18 and the inner ring of the second pressure ring 19 are tightly attached to the base 1 and fixedly installed by bolts. The inner ring of the first pressure ring 18 and the base 1 form an outer positioning ring groove 1a1, and the outer ring of the second pressure ring 19 and the base 1 form an inner positioning ring groove 1a2. This design facilitates the assembly of the entire moving disc 2a and the rotating support assembly. In addition, in this embodiment, the friction brake ring 3 and the toothed ring 12 are both fixedly installed on the inner ring of the second pressure ring 19.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A rotary disc friction locking device, comprising a base (1) and a movable disc assembly (2) rotatably disposed on the base (1), the top of the movable disc assembly (2) being used for mounting an automobile seat, characterized in that: A friction brake ring (3) is fixed on the base (1), and a friction brake block (8) and a drive mechanism (A) for controlling the movement of the friction brake block (8) are movably connected on the moving disk assembly (2). The friction brake block (8) is arranged inside or outside the friction brake ring (3). The drive 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 rotary table 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 engaged with the side of the friction brake ring (3).

3. The rotary table friction locking device according to claim 2, characterized in that: There are two sets of friction brake blocks (8), and the two sets of friction brake blocks (8) are symmetrically arranged inside the friction brake ring (3). The drive mechanism (A) includes a slider (6) that can move relative to the moving disc assembly (2), two linkage plates (7) hinged to both ends of the slider (6), and a transmission assembly that drives the slider (6) to move. The ends of the two linkage plates (7) away from the slider (6) are respectively hinged to the two sets of friction brake blocks (8).

4. The rotary table friction locking device according to claim 3, characterized in that: The transmission assembly includes a motor (4) and a lead screw (5) driven to rotate by the motor (4), and the slider (6) is threaded onto the lead screw (5) at its center.

5. The rotary table friction locking device according to claim 4, characterized in that: The moving disk assembly (2) includes a moving disk (2a) and a mounting disk (2b) fixedly disposed on the top of the moving disk (2a). The drive mechanism (A) and the friction brake block (8) are both disposed on the mounting disk (2b).

6. The rotary table friction locking device according to claim 5, characterized in that: The transmission assembly and the slider (6) are both located on the top of the mounting plate (2b), the linkage plate (7) and the friction brake block (8) are both located on the bottom of the mounting plate (2b), the slider (6) and the linkage plate (7) are hinged together by a first pin (9), the mounting plate (2b) has a first strip hole (2b1), the first pin (9) passes through the first strip hole (2b1), the linkage plate (7) and the friction brake block (8) are hinged together by a second pin (10), the mounting plate (2b) has a second strip hole (2b2), the second pin (10) passes through 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) by a third pin (11).

7. The rotary table 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 section (8a) that is adapted to the inner side of the friction brake ring (3).

8. The rotary table friction locking device according to claim 5, characterized in that: The base (1) is provided with a gear ring (12), and the top of the mounting plate (2b) is provided with a drive motor (13). The output end of the drive motor (13) is connected to a gear (14), and the gear (14) meshes with the gear ring (12).

9. The rotary table friction locking device according to claim 5, characterized in that: The base (1) is provided with an annular mounting cavity (1a) with an open upper end. An outer positioning annular groove (1a1) and an inner positioning annular groove (1a2) are formed on both sides inside the annular mounting cavity (1a). The movable disk (2a) is rotatably connected in the annular mounting cavity (1a). The movable disk (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). Rotary support assemblies are installed between the upper and lower sides of the outer support ring (2a1) and the outer positioning ring groove (1a1), and between the upper and lower sides of the inner support ring (2a2) and the inner positioning ring groove (1a2).

10. The rotary table friction locking device according to claim 9, characterized in that: Of the four sets of rotary support components, three sets are ball bearing structures and the remaining set is a sliding friction structure. The sliding friction structure is located between the inner support ring (2a2) and the upper side of the inner positioning ring groove (1a2).

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