Automobile seat turnover device

Abstract

An automobile seat turnover device comprises a connecting shaft, a mounting piece, a limiting piece and a reset piece, the mounting piece, the limiting piece and the reset piece are arranged on the connecting shaft in a penetrating mode in the axial direction, the connecting shaft is used for being connected with a backrest framework and synchronously rotates with the backrest framework, and the mounting piece is used for being connected with an automobile body. The connecting shaft can rotate around the axial direction of the connecting shaft relative to the mounting piece, the mounting piece comprises a first stop piece matched with the reset piece, the limiting piece can synchronously rotate with the connecting shaft, the limiting piece comprises a second stop piece matched with the reset piece, and when the backrest framework is in a locked state, the reset piece can reset the connecting shaft. When the backrest framework is in an unlocking state, the first stop piece is in contact with the reset piece to enable the reset piece to be stressed and store energy, and when the backrest framework is in an unlocking state, the second stop piece is in contact with the reset piece to enable the reset piece not to exert force on the connecting shaft, so that the laying-down speed of the seat backrest is slowed down, back hitting complaints are reduced, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to an automobile seat flipping device. Background Art

[0002] Car seats are one of the important structures that affect the comfort level of the car's interior space, and the angle of the seat back directly affects the riding experience of the people in the car.

[0003] The seat back usually requires the help of a flat spiral spring when flipping. When the seat back is in a locked state, the spiral spring is compressed to generate an elastic force, which makes the back tend to flip forward, but due to the limitation of the locking structure of the back, the seat back cannot be flipped over; when the seat back is in an unlocked state, during the process of the seat back being folded forward, the elastic force of the spiral spring gradually decreases to zero, and then the seat back continues to flip forward by its own gravity until it is completely folded down.

[0004] The prior art mainly relies on the completion of the movement stroke of the spiral spring itself during the seat backrest folding process to release the elastic force, which causes the seat back to flip and fold quickly, making it easy for people sitting on the seat to feel a back slap, affecting the user experience. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a car seat flipping device, which can reduce the flipping speed of the car seat, improve the riding experience, and reduce back complaints.

[0006] The utility model provides a vehicle seat flipping device, comprising a connecting shaft and a mounting member, a limiting member and a reset member axially arranged on the connecting shaft, wherein the connecting shaft is used to be connected to a backrest frame and rotate synchronously with the backrest frame, the mounting member is used to be connected to a vehicle body, the connecting shaft can rotate around its own axis relative to the mounting member, the mounting member comprises a first stopper matched with the reset member, the limiting member can rotate synchronously with the connecting shaft, the limiting member comprises a second stopper matched with the reset member, when the backrest frame is in a locked state, the first stopper contacts the reset member so that the reset member is subjected to force and stores energy, and when the backrest frame is in an unlocked state, the second stopper contacts the reset member so that the reset member does not apply force to the connecting shaft.

[0007] In one embodiment, the connecting shaft includes a mounting section and a fixing section connected along the axial direction, the mounting section is connected to the backrest frame, and the mounting member, the limiting member and the resetting member are mounted on the fixing section.

[0008] In one embodiment, the fixed section includes a first clamp and a second clamp relatively arranged, an installation area is provided between the first clamp and the second clamp, the reset member includes a main body, an inner connecting member and an outer extending member, the inner connecting member is located at the center of the main body and connected to one end of the main body, the installation area is used to install the inner connecting member, the outer extending member is located on the outer peripheral side of the main body and connected to the other end of the main body, and the outer extending member is used to cooperate and contact with the first stop member or the second stop member.

[0009] In one embodiment, the mounting member includes a mounting plate and a side plate protruding from the outer circumferential side of the mounting plate, the mounting plate is provided with a mounting hole for passing the connecting shaft, the side plate is used to connect to the vehicle body, the side plate includes a notch, the notch enables the side plate to have two free ends in the circumferential direction, and the first stop member is connected to a free end of the side plate in the circumferential direction.

[0010] In one embodiment, a limiting groove is provided at the end of the first stopper, and the limiting groove cooperates with the outer extension member. When the backrest frame is in a locked state, the outer extension member is accommodated in the limiting groove.

[0011] In one embodiment, a hook is protruded from one end of the outer extension member away from the main body, and the hook cooperates with the first stopper. When the backrest frame is in a locked state, the hook overlaps the outer peripheral side of the first stopper.

[0012] In one embodiment, the first stopper comprises a first sound-absorbing member, and the first sound-absorbing member is configured to contact the outer extension member.

[0013] In one embodiment, the limiting member includes a connecting plate, the connecting plate is provided with an opening for passing the connecting shaft, the radial dimension of the connecting plate is smaller than the radial dimension of the mounting plate, the second stop member is protruded from the outer peripheral side of the connecting plate, the second stop member is located on the inner side of the first stop member, and the second stop member is used to contact the outer extension member.

[0014] In one embodiment, a side stop is protruding from the second stop member, and the side stop is located at an end of the second stop member away from the connecting plate, and protrudes and extends relative to the second stop member toward a side close to the outer extension member, and when the second stop member contacts the outer extension member, one axial end of the side stop contacts the outer extension member.

[0015] In one embodiment, at least one of the second stopper and the side stopper comprises a second sound-absorbing member, and the second sound-absorbing member is configured to contact the outer extension member.

[0016] The beneficial effects of the utility model are:

[0017] By setting the mounting part, the mounting part can limit the reset part, and the mounting part includes a first stopper cooperating with the reset part. When the backrest frame is in a locked state, the first stopper can limit the reset part, so that the reset part is deformed under force and generates elastic force. At this time, the reset part is in an energy storage state; by setting the limiting part, the limiting part includes a second stopper, and the second stopper can limit the reset part. When the backrest frame is in an unlocked state, the reset part will apply force to the connecting shaft to flip the backrest frame. The second stopper is used to eliminate the external force applied by the reset part to the connecting shaft, so that the backrest frame can be laid down by its own gravity, so as to slow down the folding speed of the seat back, reduce complaints of back slumping, and improve the riding experience and use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is an exploded schematic diagram of the overall structure of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the partial structure of a connecting shaft of an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a mounting member according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic structural diagram of a position limiting member according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the cooperation between the reset member and the connecting shaft in one embodiment of the utility model;

[0024] Figure 6 This is a structural schematic diagram of a backrest frame in a locked state according to an embodiment of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a backrest frame in an unlocked state according to an embodiment of the utility model.

[0026] In the figure:

[0027] 10-connecting shaft; 11-installation section; 12-fixed section; 121-first clamp; 122-second clamp; 123-installation area;

[0028] 20-mounting member; 201-mounting plate; 2011-mounting hole; 202-side plate; 203-fixing hole; 204-positioning column; 21-first stopper; 211-limiting groove;

[0029] 30-limiting member; 31-second stopper; 311-side stopper; 32-connecting plate; 321-opening; 322-flange;

[0030] 40-reset member; 41-main body; 42-inner connecting member; 43-outer extension member; 44-hook member;

[0031] 51-fastener; 52-guide member; 53-locking member;

[0032] 60-Backrest frame. DETAILED DESCRIPTION

[0033] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0036] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0037] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0038] As attached Figure 1 As shown, the automobile seat flipping device proposed by the utility model comprises a connecting shaft 10, a mounting member 20, a limiting member 30 and a restoring member 40, and the mounting member 20, the limiting member 30 and the restoring member 40 are axially penetrated on the connecting shaft 10.

[0039] The connecting shaft 10 is used to be connected to the backrest frame 60 and moves synchronously with the backrest frame 60 . When the backrest frame 60 is in an unlocked state and flipped forward, the connecting shaft 10 rotates synchronously with the backrest frame 60 .

[0040] The mounting member 20 is used to connect with the vehicle body. When the backrest frame 60 is turned over, the connecting shaft 10 rotates with the backrest frame 60. The connecting shaft 10 can rotate around its own axis relative to the mounting member 20. Figure 3 The mounting member 20 includes a first stopper 21 that cooperates with the reset member 40, and Figure 6 When the backrest frame 60 is in the locked state, the reset member 40 contacts the first stopper 21, and the first stopper 21 limits the reset member 40. The first stopper 21 causes the reset member 40 to store energy under force. Figure 7 When the backrest frame 60 is in the unlocked state, the reset member 40 is free from the constraint of the first stop member 21 and can apply elastic force to the connecting shaft 10 to rotate the connecting shaft 10 and the backrest frame 60 to realize the flipping of the seat back.

[0041] The stopper 30 can rotate synchronously with the connecting shaft 10. When the backrest frame 60 is in the unlocked state and flipped forward, the backrest frame 60 drives the connecting shaft 10 to rotate around its own axis, thereby driving the stopper 30 and the connecting shaft 10 to rotate synchronously. Figure 4 and attached Figure 7 The limiting member 30 includes a second stop member 31. When the backrest frame 60 flips over to the point where the reset member 40 contacts the second stop member 31, the second stop member 31 limits the reset member 40 so that the reset member 40 and the limiting member 30 rotate synchronously with the connecting shaft 10 and the backrest frame 60. During this process, the reset member 40 no longer applies force to the connecting shaft 10, and the backrest frame 60 continues to flip over and fall down only by its own gravity.

[0042] The reset member 40 is installed on the connecting shaft 10. When the backrest frame 60 is in a locked state, the reset member 40 is subjected to force to generate elastic force. When the backrest frame 60 is in an unlocked state, the reset member 40 can apply elastic force to the connecting shaft 10, thereby driving the connecting shaft 10 to rotate around its own axis and drive the backrest frame 60 to flip over.

[0043] The first stopper 21 can make the reset member 40 be subjected to force and energy storage when the backrest frame 60 is in the locked state, so that the reset member 40 produces elastic deformation and has the tendency to apply elastic force to the connecting shaft 10 to make the connecting shaft 10 rotate around its own axis, thereby driving the backrest frame 60 to rotate. However, due to the constraint of the first stopper 21, the connecting shaft 10 and the backrest frame 60 remain relatively stationary with the reset member 40;

[0044] When the backrest frame 60 is in the unlocked state, the connecting shaft 10 rotates around its own axis driven by the elastic force of the reset member 40, and drives the backrest frame 60 to rotate to realize the flipping of the seat back. During this process, the elastic force of the reset member 40 gradually decreases, and the limit member 30 rotates synchronously with the connecting shaft 10 until the second stop member 31 contacts the reset member 40. At this time, blocked by the second stop member 31, the reset member 40 rotates synchronously with the connecting shaft 10, and the elastic force is no longer applied to the connecting shaft 10. The backrest frame 60 is no longer driven by the elastic force of the reset member 40, but continues to flip forward by relying on its own gravity. The second stop member 31 can make the reset member 40 release force instead of relying on its own stroke to release the elastic force, which can reduce the flipping speed of the seat back and reduce the back-slapping phenomenon.

[0045] Optionally, the mounting member 20 , the limiting member 30 and the resetting member 40 are coaxially connected to the connecting shaft 10 .

[0046] Optionally, when the second stopper 31 contacts the reset member 40 and causes the reset member 40 to release force on the connecting shaft 10, the angle between the seat back and the seat cushion is less than 90°, and the specific angle can be designed by those skilled in the art according to actual requirements of the seat back.

[0047] Optionally, the number of flipping devices of the present invention is two, and they are arranged on both sides of the backrest frame 60 along the left-right direction.

[0048] In one example, as shown in the attached Figure 2 As shown, the connecting shaft 10 includes a mounting section 11 and a fixing section 12 , the mounting section 11 and the fixing section 12 are axially connected, the mounting section 11 is used to connect to the backrest frame 60 , and the mounting member 20 , the limiting member 30 and the reset member 40 are installed on the fixing section 12 .

[0049] Optionally, the installation section 11 and the fixing section 12 are coaxially connected and formed as one piece.

[0050] Optionally, the connecting shaft 10 and the backrest frame 60 are connected by welding, so that the connection between the connecting shaft 10 and the backrest frame 60 has good stability and can ensure the synchronization of the rotation of the connecting shaft 10 and the backrest frame 60.

[0051] Optionally, the radial dimension of the fixing section 12 is smaller than the radial dimension of the installation section 11 , so that a step is formed at the connection between the installation section 11 and the fixing section 12 , so as to facilitate the installation and positioning of the mounting member 20 and facilitate quick assembly into place.

[0052] In one example, as shown in the attached Figure 2 As shown, the fixing section 12 includes a first clamping member 121 and a second clamping member 122 arranged opposite to each other, and an installation area 123 is left between the first clamping member 121 and the second clamping member 122. Figure 5 The reset member 40 includes a main body 41, an inner connecting member 42 and an outer extending member 43. The main body 41 is in a planar spiral shape. The inner connecting member 42 is located at the center of the main body 41. One end of the inner connecting member 42 is connected to one end of the main body 41, and the other end is a free end. The mounting area 123 cooperates with the inner connecting member 42. When the reset member 40 is installed on the connecting shaft 10, the main body 41 is sleeved on the connecting shaft 10, and the inner connecting member 42 is installed in the mounting area 123. The outer extending member 43 is located on the outer peripheral side of the main body 41 and is connected to one end of the main body 41 away from the inner connecting member 42. The outer extending member 43 is used to cooperate and contact with the first stop member 21 or the second stop member 31 to achieve limiting.

[0053] Optionally, the first clamping member 121 and the mounting section 11 are integrally formed.

[0054] Optionally, the second clamping member 122 and the mounting section 11 are formed integrally.

[0055] Optionally, the first clamping member 121 and the second clamping member 122 are symmetrically arranged.

[0056] Optionally, the reset member 40 is a planar spiral spring.

[0057] Optionally, the outer extension piece 43 extends in the radial direction of the main body 41 .

[0058] Optionally, when the reset member 40 is in a free state without being subjected to force, the outer extension member 43 and the inner connection member 42 are arranged on the same diameter, that is, their orthographic projections in the axial direction are located on the same straight line.

[0059] In one example, as shown in the attached Figure 1 As shown, the inner connecting member 42 is fixed to the installation area 123 by a fastener 51, and the fastener 51 includes a fastening hole. The fastener 51 is sleeved on the outside of the first clamp 121 and the second clamp 122 through the fastening hole. The fastening hole is configured so that the radial distance of the installation area 123 is smaller than the radial distance when it is not connected to the reset member 40. In this way, the inner connecting member 42 can be locked into the installation area 123 to prevent the reset member 40 from moving axially or falling off the fixed section 12.

[0060] Optionally, the fastener 51 is a metal clamp ring.

[0061] In one example, as shown in the attached Figure 1 As shown, a guide member 52 is provided between the fastener 51 and the reset member 40. A through hole is opened on the guide member 52, and the through hole is sleeved on the outer side of the first clamping member 121 and the second clamping member 122. The guide member 52 cooperates with the fastener 51 to prevent the reset member 40 from moving axially, and can avoid direct contact between the fastener 51 and the reset member 40 to cause wear of the reset member 40, thereby extending the service life.

[0062] Optionally, the radial dimension of the guide member 52 is greater than the radial length dimension of the inner connecting member 42 .

[0063] Optionally, the guide member 52 is a metal gasket.

[0064] Optional, as attached Figure 2 As shown, the fixed section 12 includes a large diameter section and a small diameter section. The large diameter section and the small diameter section are connected axially, and a positioning step is formed at the connection. The large diameter section is connected to the installation section 11, and the axial length of the large diameter section is the same as the axial length of the main body 41. In this way, the guide member 52 can be positioned through the positioning step to ensure that the guide member 52 is quickly installed in place. The guide member 52 and the fastener 51 are both installed on the small diameter section, which can reduce the installation size and space occupancy, and is conducive to lightweight design.

[0065] Optionally, the large diameter section and the small diameter section are coaxially connected and formed as one piece.

[0066] In one example, as shown in the attached Figure 3 As shown, the mounting member 20 includes a mounting plate 201 and a side plate 202 protruding from the outer peripheral side of the mounting plate 201. The mounting plate 201 is provided with a mounting hole 2011, which penetrates the mounting plate 201 axially and is used to connect with the connecting shaft 10. The side plate 202 protrudes and extends axially and is used to connect with the vehicle body.

[0067] The side plate 202 includes a notch, which enables the side plate 202 to have two free ends in the circumferential direction. The first stopper 21 is connected to a free end of the side plate 202 in the circumferential direction. The end of the first stopper 21 is provided with a limiting groove 211, which cooperates with the outer extension member 43 of the reset member 40. Figure 6 When the backrest frame 60 is in the locked state, the outer extension member 43 is accommodated in the limiting groove 211.

[0068] Optionally, the mounting plate 201 and the side plate 202 are integrally formed.

[0069] Optionally, the orthographic projection of the side plate 202 along the axial direction is substantially C-shaped.

[0070] Optionally, the first stop member 21 includes a first silencer, which is used to contact the outer extension member 43. Preferably, the first silencer adopts a plastic sheath, and the first silencer is connected to the first stop member 21 by a molding process. In this way, when the outer extension member 43 moves into the limiting groove 211, the outer extension member 43 contacts the first silencer, which can reduce the abnormal sound when the backrest frame 60 is unlocked and then locked. In addition, the setting of the first silencer can prevent the outer extension member 43 from directly contacting the first stop member 21, thereby reducing wear and extending the service life of the reset member 40 and the mounting member 20.

[0071] Optional, as attached Figure 3 As shown, the side plate 202 is provided with a fixing hole 203, and the side plate 202 is pinned or screwed to the vehicle body through the fixing hole 203, so that the mounting member 20 can be relatively stationary with the vehicle body. Figure 6 A positioning column 204 is convexly disposed on the outer periphery of the side plate 202. The positioning column 204 can cooperate with the positioning hole on the vehicle body so that the mounting member 20 and the vehicle body can be quickly positioned, thereby improving the installation efficiency.

[0072] Optionally, the positioning column 204 is connected to the side plate 202 by welding.

[0073] Optional, as attached Figure 4 As shown, a hook 44 is protruded from one end of the outer extension member 43 away from the main body 41. The hook 44 is not coplanar with the outer extension member 43. The hook 44 is used to cooperate with the first stopper 21. Figure 6 When the backrest frame 60 is in the locked state, the outer extension member 43 is accommodated in the limiting groove 211, and the hook member 44 overlaps the outer peripheral side of the first stop member 21 to prevent the outer extension member 43 from escaping from the limiting groove 211.

[0074] Optionally, the hook member 44 is vertically connected to the outer extension member 43 .

[0075] Optionally, the hook member 44 and the outer extension member 43 are formed integrally.

[0076] In one example, as shown in the attached Figure 4 As shown, the limiting member 30 includes a connecting plate 32, on which an opening 321 is provided to cooperate with the connecting shaft 10, and a second stopper 31 is convexly arranged on the outer peripheral side of the connecting plate 32 and protrudes and extends in the axial direction, and is combined with an attached Figure 1 The radial dimension of the connecting plate 32 is smaller than the radial dimension of the mounting plate 201, so that the second stopper 31 is located radially inside the side plate 202. More specifically, the second stopper 31 is radially inside the first stopper 21 (but this does not mean that the second stopper 31 must have the same diameter as the first stopper 21).

[0077] When the backrest frame 60 is in the unlocked state and the limit member 30 rotates with the connecting shaft 10, the circumferential position of the second stop member 31 relative to the first stop member 21 changes until the second stop member 31 contacts the outer extension member 43, and drives the reset member 40 and the second stop member 31 to rotate synchronously. Due to the limiting effect of the second stop member 31, the reset member 40 has no external force applied to the connecting shaft 10, thereby realizing the force release of the reset member 40. There is no need to rely on the stroke of the reset member 40 itself to achieve force release. The elastic force of the reset member 40 only provides the driving force for the initial flipping of the backrest frame 60, and the seat back is subsequently flipped over by its own gravity, thereby reducing the flipping speed of the seat back and eliminating the feeling of hitting the back.

[0078] Optionally, the connecting plate 32 is vertically connected to the second stopper 31 and is integrally formed.

[0079] Optionally, a flange 322 is convexly provided on the outer peripheral side of the connecting plate 32 , and the flange 322 protrudes and extends in the axial direction. The flange 322 is used to increase the structural strength of the connecting plate 32 .

[0080] Optionally, the flange 322 and the connecting plate 32 are integrally formed.

[0081] Optional, as attached Figure 4 As shown, the second stopper 31 is provided with a side stopper 311, which is combined with the attached Figure 7 The side block 311 is located at an end of the second stop member 31 away from the connecting plate 32, and protrudes and extends relative to the second stop member 31 toward the side close to the outer extension member 43. The side block 311 and the second stop member 31 cooperate to form a roughly L-shape. When the second stop member 31 contacts the outer extension member 43, one end of the side block 311 along the axial direction contacts the outer extension member 43. In this way, the outer extension member 43 can be limited in the axial direction to prevent the outer extension member 43 from moving in the axial direction and causing insufficient synchronization with the connecting shaft 10, and has a good limiting effect.

[0082] Optionally, the side stop 311 and the second stopper 31 are integrally formed.

[0083] Optionally, at least one of the second stop member 31 and the side block 311 includes a second silencer, and the second silencer is used to contact the outer extension member 43. Preferably, the second silencer adopts a plastic sheath, and the second silencer is connected to the second stop member 31 and at least one of the side block 311 through a molding process. In this way, when the outer extension member 43 moves to contact with at least one of the second stop member 31 and the side block 311, the outer extension member 43 preferentially contacts with the second silencer, which can reduce abnormal noise during the flipping process of the backrest frame 60. In addition, the setting of the second silencer can prevent the outer extension member 43 from directly contacting with at least one of the second stop member 31 and the side block 311, thereby reducing wear and extending the service life of the reset member 40 and the limit member 30.

[0084] Combined with Figure 1 The connecting plate 32 is installed on the connecting shaft 10 through the locking member 53. Through the setting of the locking member 53, the limiting member 30 can rotate synchronously with the connecting shaft 10.

[0085] Optionally, the locking member 53 is a bolt, and the connecting shaft 10 includes at least a threaded section that cooperates with the locking member 53 .

[0086] Preferably, the automobile seat flipping device of the present invention can be applied to rear seats of an automobile.

[0087] Preferably, the automobile seat flipping device of the present invention can be equipped with a damping structure to adjust the folding speed of the seat back through the damping structure. Those skilled in the art can select and install the damping structure according to actual needs, which will not be elaborated here.

[0088] When the rear seat of the automobile adopts the automobile seat flipping device of the utility model, the mounting member 20 can limit the reset member 40, and the mounting member 20 includes a first stopper 21 matched with the reset member 40. When the backrest frame 60 is in a locked state, the first stopper 21 can limit the reset member 40, so that the reset member 40 is deformed by force and generates elastic force. At this time, the reset member 40 is in a power storage state; by setting the limiting member 30, the limiting member 30 includes a second stopper 31, and the second stopper 31 can limit the reset member 40. When the backrest frame 60 is in an unlocked state, the reset member 40 will apply force to the connecting shaft 10 to flip the backrest frame 60. The second stopper 31 is used to eliminate the external force applied by the reset member 40 to the connecting shaft 10, so that the backrest frame 60 can be laid down by its own gravity, so as to slow down the laying speed of the seat back, reduce complaints about back swaying, and improve the riding experience and use experience.

[0089] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle seat flipping device, characterized in that: The invention comprises a connecting shaft (10), a mounting member (20), a limiting member (30) and a resetting member (40) which are axially penetrated on the connecting shaft (10), wherein the connecting shaft (10) is used to be connected to a backrest frame (60) and to rotate synchronously with the backrest frame (60), the mounting member (20) is used to be connected to a vehicle body, the connecting shaft (10) can rotate around its own axis relative to the mounting member (20), the mounting member (20) comprises a first stopper (21) which cooperates with the resetting member (40), the limiting member (30) and the resetting member (40) are connected to the vehicle body, and the first stopper (21) is used to be connected to the vehicle body. The backrest frame (60) is configured to be capable of rotating synchronously with the connecting shaft (10), the limiting member (30) includes a second stop member (31) cooperating with the reset member (40), when the backrest frame (60) is in a locked state, the first stop member (21) contacts the reset member (40), so that the reset member (40) is subjected to force and stores energy, and when the backrest frame (60) is in an unlocked state, the second stop member (31) contacts the reset member (40), so that the reset member (40) does not apply force to the connecting shaft (10).

2. The vehicle seat flipping device according to claim 1, characterized in that: The connecting shaft (10) comprises a mounting section (11) and a fixing section (12) connected in the axial direction, the mounting section (11) is connected to the backrest frame (60), and the mounting member (20), the limiting member (30) and the resetting member (40) are mounted on the fixing section (12).

3. The vehicle seat flipping device according to claim 2, characterized in that: The fixing section (12) comprises a first clamping member (121) and a second clamping member (122) which are arranged opposite to each other, and a mounting area (123) is provided between the first clamping member (121) and the second clamping member (122). The reset member (40) comprises a main body (41), an inner connecting member (42) and an outer extending member (43). The inner connecting member (42) is located at the center of the main body (41) and is connected to one end of the main body (41). The mounting area (123) is used to install the inner connecting member (42). The outer extending member (43) is located on the outer peripheral side of the main body (41) and is connected to the other end of the main body (41). The outer extending member (43) is used to cooperate with and contact the first stop member (21) or the second stop member (31).

4. The vehicle seat flipping device according to claim 3, characterized in that: The mounting member (20) comprises a mounting plate (201) and a side plate (202) protruding from the outer peripheral side of the mounting plate (201); the mounting plate (201) is provided with a mounting hole (2011) for passing the connecting shaft (10); the side plate (202) is used to connect with the vehicle body; the side plate (202) comprises a notch, and the notch enables the side plate (202) to have two free ends in the circumferential direction; the first stop member (21) is connected to a free end of the side plate (202) in the circumferential direction.

5. The vehicle seat flipping device according to claim 4, characterized in that: A limiting groove (211) is provided at the end of the first stopper (21), and the limiting groove (211) cooperates with the outer extension member (43). When the backrest frame (60) is in a locked state, the outer extension member (43) is accommodated in the limiting groove (211).

6. The automobile seat flipping device according to claim 3 or 5, characterized in that: A hook (44) is protruding from one end of the outer extension member (43) away from the main body (41), and the hook (44) cooperates with the first stop member (21). When the backrest frame (60) is in a locked state, the hook (44) overlaps the outer peripheral side of the first stop member (21).

7. The vehicle seat flipping device according to claim 4 or 5, characterized in that: The first stopper (21) comprises a first sound-absorbing member, and the first sound-absorbing member is used to contact the outer extension member (43).

8. The vehicle seat flipping device according to claim 4, characterized in that: The limiting member (30) comprises a connecting plate (32), the connecting plate (32) is provided with an opening (321) for passing the connecting shaft (10), the radial dimension of the connecting plate (32) is smaller than the radial dimension of the mounting plate (201), the second stop member (31) is protruding from the outer peripheral side of the connecting plate (32), the second stop member (31) is located on the inner side of the first stop member (21), and the second stop member (31) is used to contact the outer extension member (43).

9. The vehicle seat flipping device according to claim 8, characterized in that: A side stopper (311) is protrudingly provided on the second stopper (31). The side stopper (311) is located at an end of the second stopper (31) away from the connecting plate (32), and protrudes relative to the second stopper (31) toward a side close to the outer extension member (43). When the second stopper (31) contacts the outer extension member (43), an axial end of the side stopper (311) contacts the outer extension member (43).

10. The vehicle seat flipping device according to claim 9, characterized in that: At least one of the second stopper (31) and the side stopper (311) comprises a second silencer, and the second silencer is used to contact the outer extension member (43).

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