Damping mechanism for vehicle seat and vehicle seat

Abstract

The utility model relates to a damping mechanism for a vehicle seat and a vehicle seat, the damping mechanism comprising: a mounting member, which is used to be connected to a seat pan frame of a vehicle seat, and a first concave-convex structure is provided on one side surface of the mounting member; a rotatable member, which is rotatably connected to the mounting member and is used to be connected to a backrest frame of a vehicle seat, and a second concave-convex structure is provided on one side surface of the rotatable member; when the external force borne by the backrest frame is less than a preset value, the damping mechanism is not enabled, and the first concave-convex structure is engaged with the second concave-convex structure at an initial position; when the external force borne by the backrest frame is greater than or equal to a preset value, the backrest frame drives the rotatable member to rotate, and the second concave-convex structure circumferentially squeezes the first concave-convex structure and deforms until the rotatable member rotates to a preset angle and stops, and the second concave-convex structure recovers its deformation and engages with the first concave-convex structure at the next position. The damping mechanism of the utility model can meet different damping requirements, and is also beneficial to cost control and space arrangement.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, in particular to a damping mechanism for a vehicle seat and the vehicle seat. Background Art

[0002] The car seat belt restraint system is designed to restrain occupants in the event of a collision, preventing secondary collisions between the occupants and the steering wheel, dashboard, etc., or preventing the occupants from being rushed out of the car and causing death or injury. Its cushioning effect can absorb part of the kinetic energy and reduce the degree of injury to the driver and passengers.

[0003] One end of the seat belt is fixed to the seat. When the car collides, the occupants will rush forward due to inertia and bear the reaction force of the seat belt, which poses a safety hazard to personal safety. At present, the commonly used damping mechanism for vehicle seats is a grease damper. Its structural principle is to set two oil storage chambers in a sealed space, and a throttle hole is provided between the two oil storage chambers. When the car collides and generates a large external force impact, the external force presses the damping grease from one oil storage chamber into the other oil storage chamber. The smaller the aperture of the throttle hole, the greater the external force required, that is, the greater the damping torque. The disadvantage of the grease damper is that a large damping torque cannot be achieved in a small oil storage space, and the volume of the oil storage chamber needs to be increased to meet the large damping torque. This is not conducive to cost control and space layout. Utility Model Content

[0004] Based on the above-mentioned defects in the prior art, the purpose of the present utility model is to provide a damping mechanism for a vehicle seat, which can meet different damping requirements and is also beneficial to cost control and space layout.

[0005] To this end, the utility model provides the following technical solutions.

[0006] The first object of the utility model is to provide a damping mechanism for a vehicle seat, the damping mechanism comprising:

[0007] A mounting member, which is used to be connected to a seat pan frame of a vehicle seat, wherein a first concave-convex structure is provided on one side surface of the mounting member;

[0008] A rotatable member, which is rotatably connected to the mounting member and is used to be connected to the backrest frame of the vehicle seat, and a second concave-convex structure is provided on one side surface of the rotatable member;

[0009] Wherein, when the external force borne by the backrest frame is less than a preset value, the damping mechanism is not activated, and the first concave-convex structure is engaged with the second concave-convex structure at an initial position;

[0010] When the external force borne by the backrest frame is greater than or equal to a preset value, the backrest frame drives the rotatable part to rotate, and the second concave-convex structure circumferentially squeezes the first concave-convex structure and deforms until the rotatable part rotates to a preset angle and stops, and the second concave-convex structure restores its deformation and engages with the first concave-convex structure at the next position.

[0011] Preferably, the rigidity of the mounting member is greater than the rigidity of the rotatable member, and when the mounting member and the rotatable member are squeezed, the mounting member does not deform or deforms slightly; and / or,

[0012] The mounting member and the rotatable member are disc structures and have the same outer diameters; and / or,

[0013] The preset angle is 20°-30°.

[0014] Preferably, the number of the mounting members is two, the other side surface of the mounting member is provided with a third concave-convex structure, and the other side surface of the rotatable member is provided with a fourth concave-convex structure;

[0015] The rotatable member is sandwiched between the two mounting members, the second concave-convex structure is engaged with the first concave-convex structure of one mounting member, and the fourth concave-convex structure is engaged with the third concave-convex structure of the other mounting member;

[0016] When the rotatable member rotates, the fourth concave-convex structure circumferentially presses the third concave-convex structure and deforms. When the rotatable member stops, the fourth concave-convex structure recovers its deformation and engages with the third concave-convex structure at the next position.

[0017] Preferably, the first concave-convex structure, the second concave-convex structure, the third concave-convex structure and the fourth concave-convex structure are all curved structures; and / or,

[0018] The first concave-convex structure, the second concave-convex structure, the third concave-convex structure and the fourth concave-convex structure are all centrally symmetrical structures.

[0019] Preferably, an outer surface of the first concave-convex structure is parallel to an outer surface of the third concave-convex structure, and an outer surface of the second concave-convex structure is parallel to an outer surface of the fourth concave-convex structure.

[0020] Preferably, the first concave-convex structure is interference fit with the second concave-convex structure; and / or the third concave-convex structure is interference fit with the fourth concave-convex structure.

[0021] Preferably, the damping mechanism comprises a plurality of first fasteners, and the rotatable member is provided with a plurality of first limiting holes; the first fasteners match the first limiting holes one by one, and the first fasteners sequentially pass through one of the mounting members, the first limiting hole and another of the mounting members, so that the two mounting members are fixed to each other;

[0022] When the rotatable member rotates, the first fastener can move in the first limiting hole, and the hole wall of the first limiting hole can limit the rotatable angle of the rotatable member.

[0023] Preferably, the damping mechanism includes a plurality of second fasteners, and the mounting member is provided with a plurality of second limiting holes; the second fasteners are matched with the second limiting holes one by one, and the second fasteners pass through the rotatable member and the second limiting holes in sequence to fix the rotatable member to the backrest frame;

[0024] When the rotatable member rotates, the second fastening member can move in the second limiting hole.

[0025] Preferably, the first fastener is used to fix the mounting member to the seat basin frame; and / or,

[0026] The first fastener and / or the second fastener is a rivet or a screw; and / or,

[0027] The first limiting hole and / or the second limiting hole is a waist-shaped hole; and / or,

[0028] The first limiting hole and the second limiting hole have the same length; and / or,

[0029] The plurality of first limiting holes are arranged in a circular array; and / or,

[0030] The plurality of second limiting holes are arranged in a circular array; and / or,

[0031] When the damping mechanism is not activated, the first fastener passes through the center of the first limiting hole, and the second fastener passes through the center of the second limiting hole.

[0032] The second object of the utility model is to provide a vehicle seat, the vehicle seat comprising a seat basin frame, a backrest frame and the above-mentioned vehicle seat damping mechanism, the backrest frame is rotatably connected to the seat basin frame, the mounting member is connected to the seat basin frame, and the rotatable member is connected to the backrest frame;

[0033] When the external force borne by the backrest frame is greater than or equal to a preset value, the backrest frame drives the rotatable part to rotate, and the second concave-convex structure circumferentially presses the first concave-convex structure and deforms to form a damping force.

[0034] The utility model has the following technical effects:

[0035] The utility model provides a damping mechanism for a vehicle seat, which cooperates with a mounting member and a rotatable member. When the external force borne by the backrest frame is greater than or equal to a preset value, the rotatable member rotates relative to the mounting member, and during the rotation, the second concave-convex structure of the rotatable member is squeezed and deformed, thereby generating a damping force. In this way, when the backrest rotates due to being pulled by the seat belt, the damping mechanism provides a damping force to offset part of the inertial force, giving the occupant a certain inertial buffer, thereby reducing the occupant's injury caused by the restraint of the seat belt. In addition, in this solution, the overall structure of the damping mechanism is simple, and the convex height, structural shape, and structural material of the first concave-convex structure and the second concave-convex structure can be adjusted to meet different damping force requirements, which is beneficial to cost control and space layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the explosion structure of the damping mechanism of the utility model Figure 1 ;

[0037] Figure 2 A three-dimensional structural diagram of the damping mechanism of the utility model Figure 1 ;

[0038] Figure 3 Schematic diagram of the explosion structure of the damping mechanism of the utility model Figure 2 ;

[0039] Figure 4 A three-dimensional structural diagram of the damping mechanism of the utility model Figure 2 ;

[0040] Figure 5 It is a schematic diagram of the assembly structure of two mounting parts of the utility model;

[0041] Figure 6 It is a side view of the rotatable part of the utility model;

[0042] Figure 7 It is a structural sectional view of the damping mechanism of the utility model.

[0043] Description of Reference Numerals

[0044] 100. Damping mechanism;

[0045] 1. Mounting member; 11. First concave-convex structure; 111. First concave portion; 112. First convex portion; 12. Third concave-convex structure; 121. Third concave portion; 122. Third convex portion; 13. Second limiting hole; 14. First through hole; 15. First axial hole; 16. First annular portion;

[0046] 2. rotatable member; 21. second concave-convex structure; 211. second concave portion; 212. second convex portion; 22. fourth concave-convex structure; 221. fourth concave portion; 222. fourth convex portion; 23. first limiting hole; 24. second through hole; 25. second shaft hole; 26. second annular portion;

[0047] 3. The first fastener;

[0048] 4. Second fastener. DETAILED DESCRIPTION

[0049] In order to make the technical solution and beneficial effects of the utility model more obvious and easy to understand, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used in this article have the same meaning as those in the technical field to which this application belongs.

[0050] In the description of the present invention, unless otherwise explicitly defined, terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of simplified description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0051] In the present invention, the terms "first" and "second" are used only for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two; "several" means at least one, unless otherwise clearly defined.

[0052] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0054] The "left" and "right" mentioned in this utility model are all Figure 1 and Figure 3 The markings in shall prevail.

[0055] According to the following Figures 1 to 7 The vehicle seat of the present utility model is described in detail.

[0056] In this embodiment, the vehicle seat includes a seat basin frame (not shown in the figure), a backrest frame (not shown in the figure) and a damping mechanism 100. The seat basin frame is used to support the seat basin of the vehicle seat, and the backrest frame is used to support the backrest of the vehicle seat. The backrest frame is rotatably connected to the seat basin frame. Figures 1 to 7 As shown, the damping mechanism 100 comprises a mounting member 1 and a rotatable member 2, wherein the rotatable member 2 is rotatably connected to the mounting member 1, the mounting member 1 is connected to a seat basin frame, and the rotatable member 2 is connected to a backrest frame.

[0057] like Figure 1 and Figure 3 As shown, a first concave-convex structure 11 is provided on one side surface of the mounting member 1, and a second concave-convex structure 21 is provided on one side surface of the rotatable member 2. Figure 2 and Figure 4As shown, when the damping mechanism 100 is not activated, the first concave-convex structure 11 is engaged with the second concave-convex structure 21 at the initial position. When the external force on the backrest frame is less than the preset value, the force applied by the backrest frame on the rotatable member 2 is not enough to drive the rotatable member 2 to rotate. Therefore, the damping mechanism 100 is always in an inactivated state. When the car collides, due to the inertia of the occupant, the occupant pulls the backrest forward under the action of the seat belt. At this time, if the external force on the backrest frame is greater than or equal to the preset value, the backrest frame drives the rotatable member 2 to rotate. Since the mounting member 1 is fixed, the convex part of the second concave-convex structure 21 circumferentially squeezes the convex part of the first concave-convex structure 11, and the convex part of the second concave-convex structure 21 is deformed so as to be able to pass over the convex part of the first concave-convex structure 11. When the rotatable member 2 rotates to a preset angle and stops, the second concave-convex structure 21 recovers its deformation and engages with the first concave-convex structure 11 at the next position.

[0058] By adopting the above technical solution, the damping mechanism 100 cooperates with the mounting member 1 and the rotatable member 2. When the external force borne by the backrest frame is greater than or equal to the preset value, the rotatable member 2 rotates relative to the mounting member 1, and during the rotation process, the second concave-convex structure 21 of the rotatable member 2 is squeezed and deformed, thereby generating a damping force, that is, the torque required for the rotation of the rotatable member 2 is the damping torque. In this way, in the process of the backrest rotating due to being pulled by the seat belt, the damping mechanism 100 provides a damping force to offset part of the inertial force, giving the occupant a certain inertial buffer, thereby reducing the occupant's injury caused by the restraint of the seat belt. In addition, in this solution, the damping mechanism 100 has a simple overall structure, and can meet different damping force requirements, especially large damping requirements, by adjusting the convex height, structural shape, and structural material of the first concave-convex structure 11 and the second concave-convex structure 21, while also being conducive to cost control and space layout.

[0059] In one embodiment, the backrest frame is provided with a recliner (not shown in the figure). When the external force borne by the backrest frame is less than a preset value, the damping mechanism 100 is not enabled, and the backrest is adjusted at its angle by the recliner. When the external force borne by the backrest frame is greater than or equal to a preset value, the recliner is not enabled, the damping mechanism 100 is enabled to provide buffering, and the rotatable member 2 stops rotating when it rotates to a preset angle to avoid the backrest rotating too much and causing injuries to the occupants. Then, the recliner performs a rigid locking to ensure that the backrest can be stable and immovable. It should be understood that the switching cooperation between the damping mechanism 100 and the recliner can adopt any switching mechanism in the prior art, which will not be described in detail here.

[0060] In one embodiment, the rigidity of the mounting member 1 is greater than that of the rotatable member 2. When the mounting member 1 and the rotatable member 2 are squeezed, the mounting member 1 does not deform or slightly deforms, and the second concave-convex structure 21 deforms to generate a damping force when the rotatable member 2 rotates. Preferably, the mounting member 1 and the rotatable member 2 are metal members with different rigidities, which have high stability in high and low temperature environments and low manufacturing costs.

[0061] In one embodiment, if Figure 3 and Figure 4 As shown, the mounting member 1 and the rotatable member 2 are disc structures and have the same outer diameters, and the damping mechanism 100 has a simple and compact structure.

[0062] In one embodiment, the preset angle is 20°-30°, the rotatable member 2 is deformed by rotation to provide cushioning, and the rotation angle of the backrest is limited to 20°-30° to prevent the backrest from rotating too much and causing injuries to the occupant. Preferably, the preset angle is 30°.

[0063] In one embodiment, if Figures 1 to 7 As shown, there are two mounting members 1, and the other side surface of the mounting member 1 is provided with a third concavo-convex structure 12, and the other side surface of the rotatable member 2 is provided with a fourth concavo-convex structure 22, that is, both sides of the mounting member 1 and both sides of the rotatable member 2 are provided with concavo-convex structures, so that the rotatable member 2 is sandwiched between the two mounting members 1, and the second concavo-convex structure 21 is engaged with the first concavo-convex structure 11 of the mounting member 1 located on one side of the rotatable member 2, and the fourth concavo-convex structure 22 is engaged with the third concavo-convex structure 12 of the mounting member 1 located on the other side of the rotatable member 2. In this way, when the rotatable member 2 rotates relative to the two mounting members 1, the concavo-convex structures on both sides of the rotatable member 2 will deform due to circumferential extrusion, which can increase the damping force generated. In addition, when the rotatable member 2 rotates to a preset angle and stops, the second concavo-convex structure 21 recovers the deformation and is engaged with the first concavo-convex structure 11 of the corresponding mounting member 1 at the next position, and the fourth concavo-convex structure 22 recovers the deformation and is engaged with the third concavo-convex structure 12 of the corresponding mounting member 1 at the next position.

[0064] Furthermore, if Figure 1 and Figure 3 As shown, the first concavo-convex structure 11, the second concavo-convex structure 21, the third concavo-convex structure 12 and the fourth concavo-convex structure 22 are all curved surface structures, and the interlocking of the curved surfaces can not only meet the requirement of generating circumferential extrusion to provide buffering when the rotatable member 2 rotates, but also avoid the phenomenon that the concavo-convex structures of the mounting member 1 and the rotatable member 2 are stuck and cannot rotate. Of course, the surface structures of the first concavo-convex structure 11, the second concavo-convex structure 21, the third concavo-convex structure 12 and the fourth concavo-convex structure 22 are not limited to curved surface structures, but can also be a combination of planes and curved surfaces, or a combination of planes with different inclination angles.

[0065] Furthermore, if Figure 1 and Figure 3 As shown, the first concavo-convex structure 11 , the second concavo-convex structure 21 , the third concavo-convex structure 12 and the fourth concavo-convex structure 22 are all centrally symmetrical structures, which is beneficial for balancing the force on the rotatable part 2 .

[0066] Furthermore, if Figure 1 and Figure 3 As shown, the outer surface of the first concave-convex structure 11 is parallel to the outer surface of the third concave-convex structure 12, and the outer surface of the second concave-convex structure 21 is parallel to the outer surface of the fourth concave-convex structure 22. In this way, on the one hand, the structural design can be simplified, and on the other hand, it is convenient to set the mounting part 1 and the rotatable part 2 as parts with uniform thickness, which is beneficial to reducing the axial size of the damping mechanism 100.

[0067] Furthermore, if Figure 1 , Figure 3 and Figure 7 As shown, the first concavo-convex structure 11 and the second concavo-convex structure 21 are in interference fit, and the third concavo-convex structure 12 and the fourth concavo-convex structure 22 are in interference fit, so that when the damping mechanism 100 is assembled, the rotatable member 2 can be stable and immobile. Specifically, the protrusion height of the first concavo-convex structure 11 is slightly higher than the protrusion height of the second concavo-convex structure 21, and the protrusion height of the third concavo-convex structure 12 is slightly higher than the protrusion height of the fourth concavo-convex structure 22, so that the first concavo-convex structure 11 and the second concavo-convex structure 21 are in interference fit, and the third concavo-convex structure 12 and the fourth concavo-convex structure 22 are in interference fit.

[0068] In a specific embodiment, Figure 1 As shown, the outer contour of the first concave-convex structure 11 is circular, and the first concave-convex structure 11 includes four first recessed portions 111 and four first raised portions 112. The four first recessed portions 111 are arranged in a circular array, and the four first raised portions 112 are arranged in a circular array. The recessed portions 111 and the first raised portions 112 are arranged in sequence along the circumference, and the central area of ​​the first concave-convex structure 11 is concave. The four first recessed portions 111 and the four first raised portions 112 constitute an annular structure with a wavy surface and surround the concave central area.

[0069] like Figure 3 As shown, the second concave-convex structure 21 includes four second concave parts 211 and four second convex parts 212, the four second concave parts 211 are arranged in a circumferential array, the four second convex parts 212 are arranged in a circumferential array, the second concave parts 211 and the second convex parts 212 are arranged in sequence along the circumference, the central area of ​​the second concave-convex structure 21 is convex, the four second concave parts 211 and the four second convex parts 212 form a ring structure with a wavy surface and surround the convex central area. Figure 1 and Figure 3 As shown, when the mounting member 1 on the right side is assembled with the rotatable member 2, the first recessed portion 111 of the first concave-convex structure 11 is positioned opposite to the second raised portion 212 of the second concave-convex structure 21, the first raised portion 112 of the first concave-convex structure 11 is positioned opposite to the second recessed portion 211 of the second concave-convex structure 21, and the concave central area of ​​the first concave-convex structure 11 is positioned opposite to the convex central area of ​​the second concave-convex structure 21, so as to achieve interlocking.

[0070] like Figure 3 As shown, the third concave-convex structure 12 includes four third recessed portions 121 and four third convex portions 122, the four third recessed portions 121 are arranged in a circular array, the four third convex portions 122 are arranged in a circular array, the third recessed portions 121 and the third convex portions 122 are arranged in sequence along the circumference, the central area of ​​the third concave-convex structure 12 is convex, the four third recessed portions 121 and the four third convex portions 122 constitute an annular structure with a wavy surface and surround the convex central area, and the outer surfaces of the first concave-convex structure 11 and the third concave-convex structure 12 are parallel to each other.

[0071] like Figure 1 As shown, the fourth concave-convex structure 22 includes four fourth concave parts 221 and four fourth convex parts 222, the four fourth concave parts 221 are arranged in a circumferential array, the four fourth convex parts 222 are arranged in a circumferential array, the fourth concave parts 221 and the fourth convex parts 222 are arranged in sequence along the circumference, the central area of ​​the fourth concave-convex structure 22 is concave, the four fourth concave parts 221 and the four fourth convex parts 222 constitute a ring structure with a wavy surface and surround the concave central area. Figure 1 and Figure 3 As shown, when the mounting part 1 located on the left side is assembled with the rotatable part 2, the third recessed portion 121 of the third concave-convex structure 12 is positioned opposite to the fourth raised portion 222 of the fourth concave-convex structure 22, the third raised portion 122 of the third concave-convex structure 12 is positioned opposite to the fourth recessed portion 221 of the fourth concave-convex structure 22, and the outwardly convex central area of ​​the third concave-convex structure 12 is positioned opposite to the inwardly concave central area of ​​the fourth concave-convex structure 22, so as to achieve interlocking.

[0072] Of course, the number of the structures of the first recessed portion 111, the first raised portion 112, the second recessed portion 211, the second raised portion 212, the third recessed portion 121, the third raised portion 122, the fourth recessed portion 221, and the fourth raised portion 222 in the above text is not limited to four, and can also be two, three, or even more.

[0073] In one embodiment, if Figures 1 to 5 , Figure 7As shown, the damping mechanism 100 includes three first fasteners 3, the rotatable member 2 is provided with three first limiting holes 23, the first limiting holes 23 are long holes, the mounting member 1 is provided with three first through holes 14, the first fasteners 3, the first through holes 14 and the first limiting holes 23 are matched one by one in the axial direction of the rotatable member 2, and the first fasteners 3 sequentially pass through the first through hole 14, the first limiting hole 23 of one mounting member 1 and the first through hole 14 of another mounting member 1, so that the two mounting members 1 are fixed. When the rotatable member 2 rotates, the first fastener 3 moves in the first limiting hole 23, and the hole wall of the first limiting hole 23 can limit the rotatable angle of the rotatable member 2. In this solution, by limiting the opening length of the first limiting hole 23 and the initial position of the first fastener 3 in the first limiting hole 23, the rotatable angle of the rotatable member 2 can be adjusted. Of course, the number of the first fastener 3, the first limiting hole 23 and the first through hole 14 is not limited to three, and can also be two, four or even more, as long as the number of the three is consistent and one-to-one matching.

[0074] Furthermore, if Figures 1 to 5 , Figure 7 As shown, the damping mechanism 100 includes three second fasteners 4, the mounting member 1 is provided with three second limiting holes 13, the second limiting holes 13 are long holes, the rotatable member 2 is provided with three second through holes 24, the second fasteners 4, the second through holes 24 and the second limiting holes 13 are matched one by one in the axial direction of the rotatable member 2, the second fasteners 4 pass through the second through holes 24 and the second limiting holes 13 in sequence to fix the rotatable member 2 to the backrest frame, and when the rotatable member 2 rotates, the second fasteners 4 can move in the second limiting holes 13.

[0075] Furthermore, the first fastener 3 fixes the mounting member 1 to the seat basin frame (not shown in the figure). In this embodiment, the first fastener 3 is used to fix the two mounting members 1 and also to fix the mounting member 1 to the seat basin frame, which helps to reduce the number of parts of the damping mechanism 100.

[0076] In one embodiment, if Figure 1 As shown, the first fastener 3 and the second fastener 4 are rivets, which have a simple structure and are easy to assemble. Of course, the structure of the first fastener 3 and the second fastener 4 is not limited to this, for example, they can also be screws, as long as they can adapt to the interface on the backrest frame, or the interface of the recliner on the backrest frame.

[0077] In one embodiment, if Figure 1 As shown, the first limiting hole 23 and the second limiting hole 13 are waist-shaped holes with regular shapes, which are easy to design and process.

[0078] In one embodiment, if Figure 1As shown, the length of the first limiting hole 23 is equal to that of the second limiting hole 13. Thus, when the rotatable member 2 rotates, the first limiting hole 23 rotates until the hole wall at one end thereof abuts against the circumference of the first fastener 3. At the same time, the second fastener 4 rotates along with the rotatable member 2. The second fastener 4 rotates until the hole wall at one end thereof abuts against the hole wall at one end of the second limiting hole 13. At this time, the rotatable member 2 cannot continue to rotate.

[0079] Furthermore, if Figure 1 As shown, the three first limiting holes 23 are arranged in a circular array, and the three second limiting holes 13 are arranged in a circular array. The structure is simple and regular, which is easy to design and is conducive to force balance during the activation of the damping mechanism 100.

[0080] In one embodiment, if Figure 2 and Figure 4 As shown, when the damping mechanism 100 is not activated, the first fastener 3 passes through the center of the first limiting hole 23, and the second fastener 4 passes through the center of the second limiting hole 13. In this way, the rotatable part 2 can rotate forward or reverse, and the damping mechanism 100 can be adapted to the left and right sides of the backrest frame, with better adaptability.

[0081] In one embodiment, if Figure 1 and Figure 7 As shown, the mounting member 1 is provided with a first axial hole 15, and the rotatable member 2 is provided with a second axial hole 25. The first axial hole 15 and the second axial hole 25 are positioned opposite to each other and are used to install a rotating shaft (not shown in the figure). The mounting member 1 is fixedly sleeved on the rotating shaft, and the rotatable member 2 is rotatably sleeved on the rotating shaft, and the damping mechanism 100 is supported by the rotating shaft.

[0082] In one embodiment, if Figure 1 As shown, the mounting member 1 includes a first annular portion 16, on which the first limiting hole 13 and the first through hole 14 are both arranged, and the rotatable member 2 includes a second annular portion 26, on which the second limiting hole 23 and the second through hole 24 are both arranged. The first annular portion 16 surrounds the first concave-convex structure 11 and the third concave-convex structure 12, and the second annular portion 26 surrounds the second concave-convex structure 21 and the fourth concave-convex structure 22. Figure 1 and Figure 7 As shown, both side surfaces of the first annular portion 16 are planes, and both side surfaces of the second annular portion 26 are planes. The first annular portion 16 and the second annular portion 26 are parallel to each other and abut against each other or fit with a gap.

[0083] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various deformations and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the utility model that may not be explicitly described. Therefore, the above embodiments only express several implementations of the utility model and do not limit the scope of protection of the utility model patent.

Claims

1. A damping mechanism for a vehicle seat, characterized in that: The damping mechanism (100) comprises: A mounting member (1) used for connecting to a seat pan frame of a vehicle seat, wherein a first concave-convex structure (11) is provided on one side surface of the mounting member (1); A rotatable member (2) rotatably connected to the mounting member (1) and used to be connected to the backrest frame of the vehicle seat, a second concave-convex structure (21) being provided on one side surface of the rotatable member (2); Wherein, when the external force borne by the backrest frame is less than a preset value, the damping mechanism (100) is not activated, and the first concave-convex structure (11) is engaged with the second concave-convex structure (21) at an initial position; When the external force borne by the backrest frame is greater than or equal to a preset value, the backrest frame drives the rotatable part (2) to rotate, and the second concave-convex structure (21) circumferentially squeezes the first concave-convex structure (11) and deforms until the rotatable part (2) rotates to a preset angle and stops, and the second concave-convex structure (21) recovers its deformation and engages with the first concave-convex structure (11) at the next position.

2. The damping mechanism for a vehicle seat according to claim 1, characterized in that: The rigidity of the mounting member (1) is greater than the rigidity of the rotatable member (2), and when the mounting member (1) and the rotatable member (2) are squeezed, the mounting member (1) does not deform or deforms slightly; and / or, The mounting member (1) and the rotatable member (2) are disc structures and have the same outer diameter; and / or, The preset angle is 20°-30°.

3. The damping mechanism for a vehicle seat according to claim 1, characterized in that: The number of the mounting members (1) is two, the other side surface of the mounting member (1) is provided with a third concave-convex structure (12), and the other side surface of the rotatable member (2) is provided with a fourth concave-convex structure (22); The rotatable member (2) is sandwiched between the two mounting members (1), the second concave-convex structure (21) is engaged with the first concave-convex structure (11) of one mounting member (1), and the fourth concave-convex structure (22) is engaged with the third concave-convex structure (12) of the other mounting member (1); When the rotatable member (2) rotates, the fourth concave-convex structure (22) circumferentially squeezes the third concave-convex structure (12) and deforms; when the rotatable member (2) stops, the fourth concave-convex structure (22) recovers its deformation and engages with the third concave-convex structure (12) at the next position.

4. The damping mechanism for a vehicle seat according to claim 3, characterized in that: The first concave-convex structure (11), the second concave-convex structure (21), the third concave-convex structure (12) and the fourth concave-convex structure (22) are all curved surface structures; and / or, The first concave-convex structure (11), the second concave-convex structure (21), the third concave-convex structure (12) and the fourth concave-convex structure (22) are all centrosymmetric structures.

5. The damping mechanism for a vehicle seat according to claim 3, characterized in that: The outer surface of the first concave-convex structure (11) is parallel to the outer surface of the third concave-convex structure (12), and the outer surface of the second concave-convex structure (21) is parallel to the outer surface of the fourth concave-convex structure (22).

6. The damping mechanism for a vehicle seat according to claim 3, characterized in that: The first concave-convex structure (11) and the second concave-convex structure (21) are in interference fit; and / or the third concave-convex structure (12) and the fourth concave-convex structure (22) are in interference fit.

7. The damping mechanism for a vehicle seat according to any one of claims 3 to 6, characterized in that: The damping mechanism (100) comprises a plurality of first fastening members (3), and the rotatable member (2) is provided with a plurality of first limiting holes (23); the first fastening members (3) are matched with the first limiting holes (23) one by one, and the first fastening members (3) pass through one of the mounting members (1), the first limiting hole (23) and another of the mounting members (1) in sequence, so that the two mounting members (1) are fixed to each other; When the rotatable member (2) rotates, the first fastening member (3) can move in the first limiting hole (23), and the hole wall of the first limiting hole (23) can limit the rotatable angle of the rotatable member (2).

8. The damping mechanism for a vehicle seat according to claim 7, characterized in that: The damping mechanism (100) comprises a plurality of second fasteners (4), and the mounting member (1) is provided with a plurality of second limiting holes (13); the second fasteners (4) and the second limiting holes (13) are arranged in a one-to-one matching manner, and the second fasteners (4) pass through the rotatable member (2) and the second limiting holes (13) in sequence to fix the rotatable member (2) to the backrest frame; When the rotatable member (2) rotates, the second fastening member (4) can move in the second limiting hole (13).

9. The damping mechanism for a vehicle seat according to claim 8, characterized in that: The first fastener (3) is used to fix the mounting member (1) to the seat basin frame; and / or, The first fastener (3) and / or the second fastener (4) are rivets or screws; and / or, The first limiting hole (23) and / or the second limiting hole (13) are waist-shaped holes; and / or, The first limiting hole (23) and the second limiting hole (13) are of equal length; and / or, The plurality of first limiting holes (23) are arranged in a circular array; and / or, The plurality of second limiting holes (13) are arranged in a circular array; and / or, When the damping mechanism (100) is not activated, the first fastener (3) passes through the center of the first limiting hole (23), and the second fastener (4) passes through the center of the second limiting hole (13).

10. A vehicle seat, characterized in that: The vehicle seat comprises a seat basin frame, a backrest frame and a damping mechanism for a vehicle seat as claimed in any one of claims 1 to 9, wherein the backrest frame is rotatably connected to the seat basin frame, the mounting member (1) is connected to the seat basin frame, and the rotatable member (2) is connected to the backrest frame; When the external force borne by the backrest frame is greater than or equal to a preset value, the backrest frame drives the rotatable part (2) to rotate, and the second concave-convex structure (21) circumferentially presses the first concave-convex structure (11) and deforms to form a damping force.

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