Electric Seat Rotating Mechanism and Vehicle Seat

Abstract

The present application provides an electric seat rotation mechanism and an automotive seat. The electric seat rotation mechanism includes a turntable (1), a base assembly, and a friction member (8); the turntable (1) is rotatably connected to the base assembly, and the friction member (8) is disposed between the turntable (1) and the base assembly; the friction member (8) is in close contact with the turntable (1) and the base assembly, so that the friction member (8) has a certain elastic compression amount. The present application increases the frictional torque between the turntable and the base assembly, cancels the driving force of the turntable when the passenger is sitting, avoids the shaking of the seat frame caused by the shaking of the turntable when the passenger is sitting, and improves the riding comfort.

Description

Technical Field

[0001] This application relates to the technical field of automobiles, and particularly to an electric seat rotating mechanism. Background Art

[0002] Rotatable vehicle seats can greatly enhance the interactivity of passengers in the vehicle and provide a better user experience. Currently, the rotating mechanisms of rotatable vehicle seats mainly use the meshing of gears and toothed plates for transmission. Affected by manufacturing and assembly processes, there will be gaps between the gear and the toothed plate, resulting in seat shaking when passengers are sitting, and this shaking will affect the riding comfort.

[0003] In view of this, how to avoid the shaking of rotatable vehicle seats is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] To solve the above technical problem, this application provides an electric seat rotating mechanism, which includes a turntable, a base assembly, and a friction member; the turntable is rotatably connected to the base assembly, and the friction member is arranged between the turntable and the base assembly; the friction member is in close contact with the turntable and the base assembly, so that the friction member has a certain elastic compression amount.

[0005] In an embodiment of the electric seat rotating mechanism, the friction member is of an integral structure and includes a wear-resistant portion, and the friction member contacts the base assembly and the turntable with its wear-resistant portion;

[0006] Alternatively, the friction member is of an assembled structure and includes a wear-resistant portion and a support portion. The friction member contacts the base assembly and the turntable with its wear-resistant portion, and the support portion is assembled with the wear-resistant portion to support the wear-resistant portion, and the elasticity of the support portion is greater than that of the wear-resistant portion.

[0007] In an embodiment of the electric seat rotating mechanism, the wear-resistant portion is provided with a cavity; the support portion is press-fitted into the cavity.

[0008] In an embodiment of the electric seat rotating mechanism, the support portion and the wear-resistant portion are snap-connected through a concave-convex structure, the cavity is an open cavity, and the support portion is provided with a notch near the concave-convex structure, so that the concave-convex structure is exposed through the notch and the opening of the cavity.

[0009] In an embodiment of the electric seat rotating mechanism, the surface of the friction member in contact with the turntable or the base assembly is a curved surface, and only a local area of the curved surface contacts the turntable or the base assembly.

[0010] In one embodiment of the electric seat rotation mechanism, the friction member is an annular friction member, and the annular friction member is arranged coaxially with the turntable; or, the friction member is a block friction member, and a plurality of the block friction members are arranged in sequence and spaced apart along the circumference of the turntable.

[0011] An embodiment of an electric seat rotation mechanism, the base composition includes a base body, an outer pressure plate and an inner pressure plate fixedly connected to the base body, the electric seat rotation mechanism also includes multiple groups of rolling assemblies, a turntable rolling assembly is provided between the turntable and the base body, the inner pressure plate is pressed against the inner ring of the turntable and an inner ring rolling assembly is provided between the inner pressure plate and the inner ring of the turntable, and the outer pressure plate is pressed against the outer ring of the turntable and an outer ring rolling assembly is provided between the outer pressure plate and the outer ring of the turntable.

[0012] An embodiment of an electric seat rotation mechanism, the electric seat rotation mechanism comprises a rotation drive motor fixedly connected to the turntable, a gear, a tooth plate, an unlocking motor fixedly connected to the turntable, a lock pin bracket rotatably connected to the turntable, an unlocking pull wire connected between the unlocking motor and the lock pin bracket, a lock pin fixedly connected to the lock pin bracket, a lock slot bracket fixedly connected to the base, and an elastic reset member;

[0013] The gear is fixedly connected to the output shaft of the rotation drive motor, the toothed plate is fixedly connected to the base component, and the gear is meshed with the toothed plate to drive the turntable to rotate relative to the base component;

[0014] The unlocking motor pulls the unlocking wire to make the lock pin bracket rotate relative to the rotating disk, so as to drive the lock pin to escape from the lock slot of the lock slot bracket, thereby achieving unlocking;

[0015] The elastic reset member is used to provide an elastic reset force to the lock pin bracket, so that when the turntable rotates to the locking position, the lock pin can be snapped into the lock slot under the action of the elastic reset force, thereby achieving locking.

[0016] In one embodiment of the electric seat rotation mechanism, the turntable is provided with a first limit baffle, and the base is provided with a second limit baffle. When the turntable rotates to the limit position beyond the locking position, the first limit baffle and the second limit baffle collide with each other to limit the rotation limit of the turntable.

[0017] In addition, the present application also provides a car seat, including a seat frame and an electric seat rotation mechanism, wherein the electric seat rotation mechanism is any one of the electric seat rotation mechanisms described above, the turntable of the electric seat rotation mechanism is fixedly connected to the seat frame, and the base component of the electric seat rotation mechanism is used for sliding connection with a slide rail or fixed connection with a vehicle body.

[0018] By providing a friction member between the turntable and the base assembly and giving the friction member a certain elastic compression amount, the present application increases the frictional torque between the turntable and the base assembly, cancels out the driving force of the turntable when a passenger is seated, avoids the shaking of the seat frame caused by the shaking of the turntable when a passenger is seated, and improves the riding comfort. Description of the Drawings

[0019] Figure 1 FIG. is a schematic diagram of an embodiment of an electric seat rotation mechanism provided by the present application;

[0020] Figure 2 is Figure 1 exploded view of;

[0021] Figure 3 is Figure 1 exploded view of a partial structure in;

[0022] Figure 4 is a sectional view of the turntable and the base assembly;

[0023] Figure 5 is Figure 1 exploded view of a partial structure in;

[0024] Figure 6 is a structural diagram of the friction member.

[0025] The description of the reference numerals is as follows:

[0026] 1 turntable, 2 base body, 3 inner pressure plate, 4 outer pressure plate, 5 inner ring rolling assembly, 6 outer ring rolling assembly, 7 turntable rolling assembly, 8 friction member, 8a wear-resistant part, 8b support part, A curved surface, B concave-convex structure, C notch, D pattern, E limit step, 9 rotation drive motor, 10 gear, 11 toothed plate, 12 unlocking motor, 13 lock pin bracket, 14 lock pin, 15 unlocking wire rope, 16 wire rope bracket, 17 lock groove bracket, 18 leaf spring, 19 first limit baffle, 20 second limit baffle, 21 motor bracket, 22 turntable mounting bolt, 23 motor bracket fixing nut, 24 rotation drive motor fixing nut, 25 unlocking motor fixing nut, 26 elastic retaining ring, 27 step nut, 28 mounting screw. Detailed Description of the Embodiment

[0027] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present application, the technical solution of the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0028] As Figures 1-3 shown, the electric seat rotation mechanism provided by the present application includes a turntable 1, a base assembly (including a base body 2, an inner pressure plate 3 and an outer pressure plate 4) and a friction member 8.

[0029] The turntable 1 is rotatably connected to the base assembly. When applied to an automobile, the turntable 1 is fixedly connected to the seat frame of the vehicle seat, and the base assembly is slidably connected to the slide rail or fixedly connected to the vehicle body. The turntable 1 rotates relative to the base assembly, enabling the seat frame of the vehicle seat to rotate.

[0030] The friction member 8 is disposed between the turntable 1 and the base assembly. The friction member 8 is in close contact with the turntable 1 and the base assembly, such that the friction member 8 has a certain elastic compression amount.

[0031] By disposing the friction member 8 between the turntable 1 and the base assembly and enabling the friction member 8 to have a certain elastic compression amount, the frictional torque between the turntable 1 and the base assembly is increased, counteracting the driving force on the turntable 1 when the passenger is seated, avoiding the shaking of the seat frame caused by the shaking of the turntable when the passenger is seated, and enhancing the riding comfort.

[0032] Specifically, as Figure 4 shown, the friction member 8 can be disposed between any component of the turntable 1 and the base assembly that rotates relative to the turntable 1. In the illustrated embodiment, the base assembly includes a base body 2, an inner pressure plate 3, and an outer pressure plate 4. Both the inner pressure plate 3 and the outer pressure plate 4 are fixedly connected to the base body 2. The inner pressure plate 3 presses against the inner ring of the turntable 1, and an inner ring rolling assembly 5 is provided between the inner pressure plate 3 and the turntable 1. The outer pressure plate 4 presses against the outer ring of the turntable 1, and an outer ring rolling assembly 6 is provided between the outer pressure plate 4 and the turntable 1. A turntable rolling assembly 7 is provided between the turntable 1 and the base assembly. Since the base body 2, the inner pressure plate 3, and the outer pressure plate 4 all rotate relative to the turntable 1, the friction member 8 can be disposed between the base body 2 and the turntable 1, or between the inner pressure plate 3 and the turntable 1, or between the outer pressure plate 4 and the turntable 1.

[0033] When assembling the base assembly, an appropriate load is applied to the outer pressure plate 4 or the inner pressure plate 3 by an external force to ensure that the compression amount of the friction member 8 meets the requirements. The compression amount of the friction member 8 determines the normal pressure exerted by the friction member on the turntable 1, that is, it determines the magnitude of the frictional force.

[0034] Specifically, the friction member 8 can be an annular friction member, and the annular friction member can be coaxially arranged with the turntable 1. That is to say, the central axis of the annular friction member can be collinear with the central axis of the turntable 1.

[0035] Alternatively, the friction member 8 can also be a block-shaped friction member, and a plurality of block-shaped friction members can be arranged at equal intervals along the circumference of the turntable 1. In the illustrated embodiment, block-shaped friction members are used, and eight block-shaped friction members are arranged at equal intervals along the circumference of the turntable 1 in the illustrated embodiment.

[0036] Specifically, the friction member 8 can be of an integral structure, including a wear-resistant portion 8a, and the friction member 8 contacts the base assembly and the turntable 1 with its wear-resistant portion 8a; or,

[0037] asFigure 6 As shown, the friction part 8 can be an assembled structure, including a wear-resistant portion 8a and a support portion 8b, and the support portion 8b is assembled with the wear-resistant portion 8a to support the wear-resistant portion 8a. The materials of the support portion 8b and the wear-resistant portion 8a are different, and the elasticity of the support portion 8b is greater than the elasticity of the wear-resistant portion 8a. Specifically, the material of the wear-resistant portion 8a can be a harder material such as plastic, and the material of the support portion 8b can be a softer material such as polyurethane. In this multi-material friction part 8, the harder wear-resistant portion 8a can withstand friction for a long time, and the softer support portion 8b can provide soft support for the harder wear-resistant portion 8a, so as to avoid the wear-resistant portion 8a from being seriously damaged and not rebounding after deformation, so that the friction part 8 has a long service life and stable friction performance.

[0038] Specifically, Figure 3 As shown, the wear-resistant part 8a can be provided with a cavity, and the support part 8b can be installed in the cavity with interference fit, so that the support part 8b has a certain elastic compression amount. In this structure, the support part 8b can provide comprehensive support for the solid part of the wear-resistant part 8a, and the cavity can provide a rebound space for the wear-resistant part 8a, so that the wear-resistant part 8a can rebound and reset more easily.

[0039] Specifically, Figure 3 As shown, the support part 8b and the wear-resistant part 8a are connected by a concave-convex structure B. In the figure, the concave-convex structure B includes: a protrusion arranged in the middle of the bottom wall of the cavity, a clamping protrusion arranged on both sides of the protrusion, and a clamping groove arranged on the part of the support part 8b located on both sides of the protrusion, and the clamping grooves on both sides are respectively engaged with the clamping protrusions on both sides. This structure facilitates the assembly of the support part 8b and the wear-resistant part 8a and can ensure the stability of the connection between the support part 8b and the wear-resistant part 8a.

[0040] Specifically, Figure 3 As shown, the cavity is an open cavity, and the support portion 8b is provided with a notch C near the concave-convex structure B, so that the concave-convex structure B is exposed through the notch C and the opening of the cavity. In this way, the matching of the concave-convex structure B can be observed through the opening of the cavity and the notch C, and the notch C also provides an operating space, making the assembly of the support portion 8b and the wear-resistant portion 8a more convenient and quick.

[0041] Specifically, the surface of the friction member 8 in contact with the turntable 1 or the base can be set as a curved surface, and only a local area of the curved surface is in contact with the turntable 1 or the base. Figure 3 In the embodiment shown, the top surface of the friction member 8 is a curved surface A with a convex center and concave sides, and only the middle area of the curved surface A contacts the turntable 1 or the base, thus avoiding the problem that the contact area between the friction member 8 and the turntable 1 or the base is too large, causing the turntable 1 to rotate laboriously and the friction member 8 to deform excessively. In addition, a pattern D can be provided on the contact area to ensure the friction effect.

[0042] Specifically, the friction member 8 can be provided with a limiting step E, and the turntable 1 or the base assembly can be provided with a limiting groove. The limiting step E of the friction member 8 can be clamped in the limiting groove to prevent the friction member 8 from shifting during the rotation of the turntable 1. Of course, the positions of the limiting step E and the limiting groove can be interchanged.

[0043] Specifically, as Figure 1 , Figure 2 and Figure 5 shown, the electric seat rotation mechanism includes a rotation drive motor 9, a gear 10, a toothed plate 11, an unlocking motor 12, a lock pin bracket 13, an unlocking wire 15, a lock groove bracket 17, and an elastic reset member.

[0044] The rotation drive motor 9 is fixedly connected to the turntable 1, and specifically can be fixedly connected to the motor bracket 21 through the rotation drive motor fixing nut 24, and the motor bracket 21 is fixedly connected to the turntable 1 through the motor bracket fixing nut 23.

[0045] The gear 10 is fixedly connected to the output shaft of the rotation drive motor 9. The toothed plate 11 is fixedly connected to the base assembly, and the gear 10 meshes with the toothed plate 11.

[0046] The driving rotation process is as follows: the output shaft of the rotation drive motor 9 rotates, driving the gear 10 to rotate around its own central axis, and at the same time driving the gear 10 to revolve around the central axis of the toothed plate 11, thereby driving the turntable 1 to rotate.

[0047] The unlocking motor 12 is fixedly connected to the turntable 1, and specifically can be fixedly connected to the motor bracket 21 through the unlocking motor fixing nut 25.

[0048] One end of the unlocking wire 15 is connected to the output shaft of the unlocking motor 12, and the other end is connected to the lock pin bracket 13. Additionally, a wire bracket 16 can be provided. The wire bracket 16 is fixedly connected to the turntable 1 and is used to connect the unlocking wire 15 to provide support for the unlocking wire 15.

[0049] The lock pin bracket 13 is rotatably connected to the turntable 1. The lock pin 14 is fixed on the lock pin bracket 13, and the elastic reset member provides a reset force for the lock pin bracket 13. Specifically, the lock pin bracket 13 can be hinged to the turntable 1 through a step nut 27 and a mounting screw 28. The elastic reset member can be a leaf spring 18 (of course, it is not limited to this, and any component capable of providing an elastic reset force can be used). The center of the leaf spring 18 is sleeved on the step nut 27, the hanging end of the leaf spring 18 is hooked to the lock pin 14, and an elastic retaining ring 26 can also be provided. The leaf spring 18 is clamped between the elastic retaining ring 26 and the step surface of the step nut 27 to fix the position of the leaf spring 18 in the axial direction of the step nut 27.

[0050] The lock groove bracket 17 is fixedly connected to the base assembly, and the lock groove on the lock groove bracket 17 is used to cooperate with the lock pin 14 to achieve locking.

[0051] The unlocking process is as follows: the unlocking motor 12 pulls the lock pin bracket 13 through the unlocking pull wire 15, so that the lock pin bracket 13 rotates relative to the turntable 1, driving the lock pin 14 to escape from the lock slot, thereby achieving unlocking. During the unlocking process, the leaf spring 18 accumulates elastic energy.

[0052] The locking process is: when the turntable 1 rotates to the locking position, the leaf spring 18 releases its elastic energy, and the lock pin bracket 13 rotates and resets under the elastic reset force of the leaf spring 18, driving the lock pin 14 to re-enter the lock slot, thereby achieving locking.

[0053] Further, such as Figure 2 As shown, the turntable 1 can be provided with a first limit baffle 19, and the base component can be provided with a second limit baffle 20. When the turntable 1 rotates to the limit position beyond the locking position, the first limit baffle 19 and the second limit baffle 20 conflict with each other to limit the rotation limit of the turntable 1. If the locking function is normal, the turntable 1 can at most rotate to the locking position. Once the locking function is abnormal, the turntable 1 will rotate further to the limit position beyond the locking position. When rotating to the limit position, the first limit baffle 19 and the second baffle conflict, so that the turntable 1 cannot rotate further. This can avoid the problem that the turntable 1 cannot be used normally due to unrestricted rotation when the locking function is abnormal.

[0054] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. Electric seat rotation mechanism, characterized in that, The electric seat rotation mechanism includes a turntable (1), a base assembly, and a friction member (8); the turntable (1) is rotatably connected to the base assembly, and the friction member (8) is disposed between the turntable (1) and the base assembly; the friction member (8) is in close contact with the turntable (1) and the base assembly, so that the friction member (8) has a certain elastic compression amount. The friction member (8) is of an assembled structure, including a wear-resistant portion (8a) and a support portion (8b). The friction member (8) contacts the base assembly and the turntable (1) with its wear-resistant portion (8a). The support portion (8b) is assembled with the wear-resistant portion (8a) to support the wear-resistant portion (8a). The elasticity of the support portion (8b) is greater than that of the wear-resistant portion (8a). The wear-resistant portion (8a) is provided with a cavity, and the support portion (8b) is press-fitted into the cavity. The surface of the friction member (8) that contacts the turntable (1) or the base assembly is a curved surface (A), and only a partial area of the curved surface (A) contacts the turntable (1) or the base assembly.

2. The electric seat rotation mechanism according to claim 1, wherein The support portion (8b) and the wear-resistant portion (8a) are snap-connected through a concave-convex structure (B). The cavity is an open cavity. The support portion (8b) is provided with a notch (C) near the concave-convex structure (B), so that the concave-convex structure (B) is exposed through the notch (C) and the opening of the cavity.

3. The electric seat rotation mechanism according to claim 1, wherein The friction member (8) is an annular friction member, and the annular friction member is coaxially arranged with the turntable (1); alternatively, the friction member (8) is a block-shaped friction member, and a plurality of the block-shaped friction members are arranged at intervals along the circumferential direction of the turntable (1).

4. The electric seat rotation mechanism according to any one of claims 1-3, characterized in that The base assembly includes a base body (2), an outer pressure plate (4) and an inner pressure plate (3) fixedly connected to the base body (2). The electric seat rotation mechanism further includes a plurality of sets of rolling components. A turntable rolling component (7) is provided between the turntable (1) and the base body (2). An inner ring rolling component (5) is provided between the inner pressure plate (3) and the inner ring of the turntable (1) which presses against the inner ring of the turntable (1). An outer ring rolling component (6) is provided between the outer pressure plate (4) and the outer ring of the turntable (1) which presses against the outer ring of the turntable (1).

5. The electric seat rotation mechanism according to claim 4, wherein, The electric seat rotation mechanism includes a rotation drive motor (9) fixedly connected to the turntable (1), a gear (10), a toothed plate (11), an unlocking motor (12) fixedly connected to the turntable (1), a lock pin bracket (13) rotatably connected to the turntable (1), an unlocking wire (15) connected between the unlocking motor (12) and the lock pin bracket (13), a lock pin (14) fixedly connected to the lock pin bracket (13), a lock groove bracket (17) fixedly connected to the base assembly, and an elastic reset member. The gear (10) is fixedly connected to the output shaft of the rotation drive motor (9). The toothed plate (11) is fixedly connected to the base assembly. The gear (10) meshes with the toothed plate (11) to drive the turntable (1) to rotate relative to the base assembly. The unlocking motor (12) pulls the unlocking cable (15) to rotate the lock pin bracket (13) relative to the turntable (1), so as to drive the lock pin (14) out of the lock groove of the lock groove bracket (17), thereby achieving unlocking; The elastic reset member is used to provide an elastic reset force to the lock pin bracket (13), so that when the turntable (1) rotates to the locking position, the lock pin (14) can be snapped into the lock groove under the action of the elastic reset force, thereby achieving locking.

6. The electric seat rotation mechanism according to claim 5, characterized in that, The turntable (1) is provided with a first limit baffle (19), and the base assembly is provided with a second limit baffle (20). When the turntable (1) rotates beyond the locking position to the limit position, the first limit baffle (19) and the second limit baffle (20) abut against each other to limit the rotation limit of the turntable (1).

7. An automotive seat, comprising a seat frame and an electric seat rotation mechanism, characterized in that, The electric seat rotation mechanism is the electric seat rotation mechanism according to any one of claims 1-6. The turntable (1) of the electric seat rotation mechanism is fixedly connected to the seat frame, and the base assembly of the electric seat rotation mechanism is used for sliding connection with the slide rail or fixed connection with the vehicle body.

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