Anti-diving turnover mechanism, seat and vehicle

Abstract

The invention provides an anti-diving turnover mechanism, a seat and a vehicle. Wherein the anti-diving turnover mechanism comprises a seat framework provided with an elastic seat basin; the middle shaft is connected to the seat framework and arranged on the front side of the elastic seat basin; the overturning support is rotationally connected with the middle shaft and comprises a supporting end and a driving end which are located on the two sides of the middle shaft, and the driving end is arranged on the lower side of the elastic seat basin in a suspended mode; the positioning piece is connected between the overturning support and the middle shaft and limits the overturning support to rotate relative to the middle shaft, and when the passenger dives to enable the elastic seat basin to press the driving end downwards, the positioning piece is broken, so that the overturning support rotates forwards and synchronously drives the supporting end to be lifted; the locking component is arranged between the turnover bracket and the middle shaft and is used for limiting the reverse rotation of the turnover bracket; the lower side of the overturning support is sunken to form a deformation groove, and the deformation groove is formed between the supporting end and the middle shaft. When the vehicle collides, the supporting end is kept in a lifting state to limit the passenger to dive, the impact force can be absorbed by the fracture of the positioning piece and the deformation of the overturning support, and the injury to the passenger is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle safety devices, and in particular to an anti-diving and flipping mechanism, a seat and a vehicle. Background Art

[0002] During a frontal collision of a car, the occupant dives in the seat due to inertia, causing the abdominal belt in the safety belt to slip off the hip bone, directly acting on the abdomen and internal organs, or the shoulder belt to slip off the shoulder and directly act on the neck. In order to solve the problem of excessive diving of the occupant, an anti-diving device is usually installed under the seat. When a collision occurs, the anti-diving device lifts the front end of the seat to increase the angle of the seat part so that the seat part restrains the occupant's buttocks, thereby preventing the occupant from diving and alleviating the effect of the waist belt, reducing the overall damage to the occupant. However, the impact force of the collision is large. When the anti-diving device lifts the front end of the seat to restrain the occupant's buttocks, the impact force of the collision will be applied to the occupant's hips, legs and pelvis and transmitted to the thoracic and lumbar vertebrae, making the pelvis, thoracic and lumbar vertebrae of the occupant easily injured by compression. Summary of the invention

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides an anti-diving and flipping mechanism, a seat and a vehicle.

[0004] The first aspect of the present application provides an anti-submarine and flipping mechanism, comprising:

[0005] A seat frame having an elastic seat pan for carrying passengers;

[0006] A central axis connected to the seat frame and arranged at the front side of the elastic seat basin;

[0007] A flip bracket, the middle part of which is rotatably connected to the central axis, comprises a supporting end and a driving end located on both sides of the central axis, the driving end is suspended and arranged at the lower side of the elastic seat basin, and the driving end is spaced apart from the elastic seat basin;

[0008] A positioning member connected between the flip bracket and the central axis to limit the flip bracket from rotating relative to the central axis. When the passenger dives down and causes the elastic seat pan to press down the driving end, the positioning member breaks, so that the flip bracket rotates forward and simultaneously drives the supporting end to rise.

[0009] A locking assembly, disposed between the flip bracket and the central axis, to limit the reverse rotation of the flip bracket;

[0010] The lower side of the flip bracket is recessed to form a deformation groove, and the deformation groove is arranged between the support end and the central axis.

[0011] Optionally, there are multiple deformation grooves, and the multiple deformation grooves are arranged at intervals along the direction from the supporting end to the driving end.

[0012] Optionally, the deformation groove forms two abutment walls which are arranged opposite to each other along the direction from the supporting end toward the driving end;

[0013] Along the recessed direction of the deformation groove, the two abutment walls are inclined close to each other.

[0014] Optionally, the flip bracket includes a frame body, a front crossbeam and a rear crossbeam;

[0015] The front cross beam and the rear cross beam both extend along the axial direction of the central axis, the front cross beam and the rear cross beam are respectively connected to the two ends of the frame body, the frame body is rotatably connected to the central axis, the front cross beam is arranged at the front side of the central axis as the supporting end, the rear cross beam is arranged at the rear side of the central axis as the driving end, and the rear cross beam and the elastic seat basin are spaced apart and arranged opposite to each other;

[0016] The positioning member is connected between the frame body and the central axis, the locking assembly is connected between the frame body and the central axis, the deformation groove is arranged on the frame body, and the deformation groove is arranged between the front cross beam and the central axis.

[0017] Optionally, the rear cross beam comprises a first beam body and a second beam body, and the second beam body and the first beam body are arranged at intervals along the central axis in a direction toward the elastic seat basin;

[0018] The elastic seat basin includes a front area and a rear area, the front area is arranged on a side of the rear area close to the central axis, and the first beam body and the second beam body are both arranged opposite to the front area.

[0019] Optionally, the locking assembly includes a ratchet and a limiting column;

[0020] The ratchet is sleeved on the central shaft, the ratchet is rotatably connected to the central shaft, and the ratchet is fixedly connected to the flip bracket;

[0021] The limiting column is fixedly connected to the central axis, and the limiting column abuts against the ratchet. When the flip bracket rotates in the opposite direction, the limiting column limits the ratchet to rotate relative to the central axis.

[0022] Optionally, the limiting column includes an elastic member, a locking tongue and a mounting plate;

[0023] The mounting plate is fixedly mounted on the central axis, the mounting plate and the ratchet are spaced apart along the radial direction of the central axis, the locking tongue is arranged between the mounting plate and the ratchet, the locking tongue and the mounting plate are slidingly connected along the radial direction of the central axis, the elastic member is arranged between the locking tongue and the mounting plate, and one end of the locking tongue away from the mounting plate abuts against the ratchet.

[0024] Optionally, the positioning member includes a nylon pin, a first pin hole is provided on the central axis, a second pin hole is provided on the flip bracket, the first pin hole and the second pin hole are arranged radially along the central axis, the first pin hole and the second pin hole are arranged coaxially, and the nylon pin is plug-connected with the first pin hole and the second pin hole so that when the driving end is under pressure, the nylon pin is subjected to a shear force along the circumference of the central axis.

[0025] A second aspect of the present application provides a seat, comprising a seating portion, a seat back, and an anti-diving and flipping mechanism as described in any one of the above items;

[0026] The seat back is connected to one end of the seating portion, the seat frame is installed inside the seating portion, and the central axis is arranged on a side of the elastic seat pan away from the seat back.

[0027] A third aspect of the present application provides a vehicle comprising the seat as described above.

[0028] Compared with the prior art, the technical solution provided by this application has the following advantages:

[0029] The present application provides an anti-diving and flipping mechanism, a seat and a vehicle. The anti-diving and flipping mechanism arranges a driving end at intervals on the lower side of the elastic seat pan, so that when the occupant dives, the elastic seat pan can be deformed and abut against the driving end, so that the force of the occupant diving is applied to the flip bracket; the structural strength of the positioning member itself can prevent the occupant from erroneously triggering the anti-diving and flipping mechanism to start due to the bumping of the vehicle, and when the force of the occupant diving causes the positioning member to break, the positioning member can absorb part of the force of the occupant diving, reduce the force of the flip bracket on the occupant, and reduce the damage to the occupant; after the flip bracket rotates forward, the support end is lifted, and the locking assembly limits the reverse rotation of the flip bracket, the flip bracket and the locking assembly cooperate with each other so that the support end can support the legs of the occupant and limit the occupant from continuing to dive, and the deformation groove on the flip bracket can bend and deform the flip bracket, so that the flip bracket absorbs the force of the occupant diving, so as to reduce the damage to the occupant. Ultimately, through the cooperation of the flip bracket, the positioning piece and the locking assembly, when the vehicle collides, the support end remains in a raised state to support the occupant to limit the occupant from diving. The fracture of the positioning piece and the deformation of the flip bracket can absorb the force of the occupant diving and reduce the damage to the occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 It is a schematic diagram of the side cross-sectional structure of the anti-submarine and flipping mechanism described in the embodiment of the present application;

[0033] Figure 2 A top view of the anti-submarine and flipping mechanism described in an embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the side sectional structure of the seat described in the embodiment of the present application.

[0035] Among them, 1. seat frame; 11. elastic seat pan; 2. central axis; 3. flip bracket; 31. frame body; 32. front crossbeam; 33. rear crossbeam; 331. first beam body; 332. second beam body; 34. deformation groove; 341. abutment wall; 41. nylon pin; 42. bushing; 5. locking assembly; 51. ratchet; 52. limiting column; 521. locking tongue; 522. elastic member; 523. mounting plate; 61. seating part; 62. chair back. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0038] Reference Figures 1 to 3As shown, the first aspect of the embodiment of the present application provides an anti-diving and flipping mechanism, including a seat frame 1, a central axis 2, a flip bracket 3, a positioning member and a locking assembly 5; the seat frame 1 is provided with an elastic seat basin 11 for carrying an occupant; the central axis 2 is connected to the seat frame 1 and is arranged on the front side of the elastic seat basin 11; the middle part of the flip bracket 3 is rotatably connected to the central axis 2, and the flip bracket 3 includes a supporting end and a driving end located on both sides of the central axis 2, the driving end is suspended and arranged on the lower side of the elastic seat basin 11, and the driving end is spaced apart from the elastic seat basin 11; the positioning member is connected between the flip bracket 3 and the central axis 2 to limit the rotation of the flip bracket 3 relative to the central axis 2, when the occupant dives and causes the elastic seat basin 11 to press down the driving end, the positioning member breaks, so that the flip bracket 3 rotates in the forward direction and simultaneously drives the supporting end to rise; the locking assembly 5 is arranged between the flip bracket 3 and the central axis 2 to limit the reverse rotation of the flip bracket 3; the lower side of the flip bracket 3 is recessed to form a deformation groove 34, and the deformation groove 34 is arranged between the supporting end and the central axis 2.

[0039] Specifically, the seat frame 1 can be selected as a rectangular frame structure, and of course, it can also be selected as a frame structure of other shapes; the seat includes a seat portion 61 and a seat back 62, and the seat back 62 is connected to one end of the seat portion 61. The seat frame 1 is a support frame inside the seat portion 61 of the seat, that is, when the user sits on the seat portion 61 of the seat, the seat frame 1 is on the lower side of the user. The elastic seat pot 11 can be selected as a plane formed by weaving elastic metal wire, and of course, it can also be selected as a plane made of elastic material. When the occupant sits on the seat, the elastic seat pot 11 supports the occupant's buttocks.

[0040] The elastic seat basin 11 is sunken downward when carrying an occupant, so that the elastic seat basin 11 moves toward the driving end. When the occupant sits normally, the deformation of the elastic seat basin 11 is small and will not contact the driving end, so that the user will not feel the existence of the flip bracket 3, thereby improving the user's riding comfort; when the vehicle collides and the occupant dives, the elastic seat basin 11 is deformed to a large extent and contacts the driving end, and the force of the occupant diving is transmitted to the driving end through the elastic seat basin 11, and the force borne by the driving end is transmitted to the positioning part. The force borne by the positioning part exceeds the bearing limit of its own material and breaks, thereby causing the occupant to press down on the driving end, and the downward movement of the driving end simultaneously drives the supporting end to move upward, thereby lifting the supporting end.

[0041] The above-mentioned central axis 2 can be selected as an axis body connected to the inside of the seat frame 1, and a through hole can be selected to be provided on the flip bracket 3, and the central axis 2 is inserted into the through hole of the flip bracket 3, so that the flip bracket 3 is rotatably connected to the central axis 2. Of course, it is also possible to select a shaft sleeve 42 on the flip bracket 3, the shaft sleeve 42 is a hollow cylindrical structure, the shaft sleeve 42 is arranged in the middle of the flip bracket 3, the shaft sleeve 42 is sleeved on the central axis 2, and the shaft sleeve 42 is rotatably connected to the central axis 2, so that the flip bracket 3 is rotatably connected to the central axis 2.

[0042] The central axis 2 is located at the front side of the elastic seat pot 11. The elastic seat pot 11 is used to support the buttocks of the occupant, that is, the position of the elastic seat pot 11 is the position of the seat portion 61 close to the seat back 62 of the seat; the direction of the seat portion 61 toward the seat back 62 is the rear direction, and the direction of the seat portion 61 away from the seat back 62 is the front direction. The central axis 2 is arranged on the side of the elastic seat pot 11 away from the seat back 62. Of course, when the seat frame 1 is arranged in the vehicle, the side facing the front of the vehicle is the front side, and the side facing the rear of the vehicle is the rear side. The seat back 62 is installed on the side of the seat portion 61 facing the rear of the vehicle, and the central axis 2 is on the side of the elastic seat pot 11 facing the front of the vehicle.

[0043] The above-mentioned flip bracket 3 can be selected as a rectangular frame structure, and the two ends of the flip bracket 3 in the radial direction of the central axis 2 are respectively a driving end and a supporting end, and the driving end is arranged on the side of the elastic seat basin 11 close to the chassis or the ground of the vehicle, so that the driving end is arranged on the lower side of the elastic seat basin 11. Of course, the flip bracket 3 can also be selected to include a longitudinal rod and two cross rods, the longitudinal rod is arranged along the radial direction of the central axis 2 and is rotatably connected to the central axis 2, and the two cross rods are respectively arranged at the two ends of the longitudinal rod, and the cross rod extends along the axial direction of the central axis 2, so that the two ends of the longitudinal rod are respectively a driving end and a supporting end.

[0044] The above-mentioned driving end is on the side of the central axis 2 close to the elastic seat basin 11, and the supporting end is on the side of the central axis 2 away from the elastic seat basin 11. The upper side of the driving end is spaced apart from the elastic seat basin 11, and the lower side does not interfere with other components of the seat, so that the driving end is suspended to ensure that the downward movement of the driving end will not be hindered.

[0045] The above-mentioned positioning member can be selected as a nylon pin 41, a through hole is set on the central axis 2, and a through hole is set on the flip bracket 3, and the nylon pin 41 is inserted into the through holes of the flip bracket 3 and the central axis 2, so that the nylon pin 41 limits the relative rotation of the flip bracket 3 and the central axis 2, and when the vehicle collides, the force applied by the elastic seat basin 11 to the driving end is transmitted to the nylon pin 41 through the flip bracket 3, and the nylon pin 41 breaks, so that the flip bracket 3 can rotate relative to the central axis 2; of course, the positioning member can also be selected as a plastic plate body, one end of the plastic plate body is connected to the central axis 2 by bolts, and the other end is connected to the flip bracket 3 by bolts, so that the force applied by the elastic seat basin 11 to the driving end is transmitted to the plastic plate body through the flip bracket 3, and the plastic plate body breaks, so that the flip bracket 3 can rotate relative to the central axis 2.

[0046] The above-mentioned positioning member can keep the flip bracket 3 stable in relative position with the central axis 2 when the vehicle is driving normally, and make the flip bracket 3 cooperate with the elastic seat pot 11, so that when the occupant sits on the seat normally, when the vehicle bumps and the elastic seat pot 11 contacts the driving end, the force transmitted to the positioning member is small and will not cause the positioning member to break, thus avoiding the false triggering of the anti-diving mechanism. The breakage of the positioning member can also absorb part of the impact force on the occupant, reduce the force exerted by the flip bracket on the occupant's buttocks and legs, and reduce the damage to the occupant during a vehicle collision.

[0047] The side of the flip bracket 3 in the vertical direction close to the chassis or the ground of the vehicle is the lower side, and a part of the lower side of the flip bracket 3 is recessed in a direction away from the chassis or the ground of the vehicle to form a deformation groove 34 .

[0048] When the above-mentioned support end is lifted to support the thigh part of the occupant, the force applied to the support end causes the flip bracket 3 to deform at the deformation groove 34. The deformation groove 34 can be selected to be a through groove that penetrates the flip bracket 3 along the axial direction of the central axis 2, so that the deformation groove 34 has two side walls that are arranged oppositely along the direction of the support end toward the driving end. The flip bracket 3 stops deforming when the two side walls abut against each other, so that the part of the flip bracket 3 on the front side of the central axis 2 can be deformed within a certain range. Of course, the deformation groove 34 can also be selected to be a groove body with four side walls. When the flip bracket 3 is deformed, the two side walls that are arranged oppositely along the direction of the support end toward the driving end approach each other, and the two side walls along the axial direction of the central axis 2 bend and deform. When the deformation groove 34 has two side walls that are arranged oppositely along the direction of the support end toward the driving end abut against each other, the flip bracket 3 stops deforming.

[0049] The deformation groove 34 provided on the above-mentioned flip bracket 3 can reduce the structural strength of some positions of the flip bracket 3, so that when the support end supports the legs of the occupant, the flip bracket 3 deforms while providing support to the occupant, thereby absorbing part of the impact force of the collision, reducing the force of the anti-diving flip mechanism on the occupant's buttocks and legs, and reducing the damage to the occupant. In addition, the deformation groove 34 is a groove-shaped structure. When the flip bracket 3 is deformed to a certain extent, the two side walls of the deformation groove 34 will abut against each other, so that the overall structure of the flip bracket 3 remains stable and stops deforming, so that the flip bracket 3 can play the effect of lifting the legs of the occupant to prevent the occupant from excessively diving.

[0050] The forward rotation direction of the flip bracket 3 is that the driving end moves downward around the central axis 2, so that the driving end moves in the direction away from the elastic seat basin 11, and the supporting end moves upward around the central axis 2; the reverse rotation direction of the flip bracket 3 is that the supporting end moves downward around the central axis 2, and the driving end moves upward around the central axis 2, so that the driving end moves in the direction close to the elastic seat basin 11.

[0051] The above-mentioned locking assembly 5 can be selected as a ratchet and a limit column. The ratchet is connected to the flip bracket 3, and the limit column is connected to the central axis 2. The limit column abuts against the ratchet. When the driving end moves downward to allow the flip bracket 3 to rotate forward, the limit column has no limiting effect on the rotation of the ratchet. When the supporting end moves downward to allow the flip bracket 3 to rotate in the reverse direction, the limit column limits the rotation of the ratchet, thereby allowing the locking assembly 5 to limit the flip bracket 3 from rotating in the reverse direction around the central axis 2.

[0052] Of course, you can also choose to have the locking assembly 5 include an elastic sheet and a limit plate, the limit plate is fixedly connected to the central axis 2, the elastic sheet is connected between the support end and the limit plate, when the support end of the flip bracket 3 is not lifted, the elastic sheet is folded, when the support end of the flip bracket 3 is lifted, the elastic sheet unfolds to form a straight sheet structure, the straight sheet structure, the limit plate and the flip bracket 3 form a triangular structure, so that the straight sheet structure formed by the elastic sheet supports the support end of the flip bracket 3, so that the locking assembly 5 limits the direction of rotation of the flip bracket 3.

[0053] The locking assembly 5 mentioned above limits the reverse rotation of the flip bracket 3, so that the position of the supporting end after lifting remains stable, so that the supporting end can bear the diving force exerted on the occupant, and prevents the flip bracket 3 from rotating under the diving force of the occupant's hips and legs; and when the supporting end bears the force exerted on the occupant, the force can completely act on the flip bracket 3 between the supporting end and the central axis 2, so that the position where the deformation groove 34 is provided on the flip bracket 3 can bend and deform.

[0054] When the anti-diving and flipping mechanism provided in the present application is used, the seat frame 1 is installed in the seating portion 61 of the seat, the central axis 2 is arranged on the side of the elastic seat pan 11 away from the seat back 62, and the positioning piece is connected between the flipping bracket 3 and the central axis 2.

[0055] When the passenger sits normally, the passenger sits on the seat portion 61 of the seat, and the elastic seat pan 11 is slightly deformed and spaced from the driving end.

[0056] When the vehicle collides, the occupant dives. The force of the occupant diving increases the deformation of the elastic seat pan 11, causing the elastic seat pan 11 to contact the driving end. The force of the occupant diving is applied to the positioning piece through the driving end and the flip bracket 3; the positioning piece breaks under the force of the occupant diving, and the force of the occupant diving causes the driving end to move downward, and the flip bracket 3 rotates forward around the central axis 2, causing the supporting end to move upward and lift synchronously. The locking assembly 5 limits the reverse rotation of the flip bracket 3, so that the supporting end supports the legs of the occupant and limits the occupant from diving.

[0057] When the occupant dives, when the diving force is small, the support end maintains a stable position under the action of the locking assembly 5, so that the support end supports the occupant's legs. The structural strength of the flip bracket 3 can bear the force transmitted by the occupant, and the flip bracket 3 does not deform.

[0058] When the diving force increases, the deformation groove 34 of the flip bracket 3 undergoes a certain degree of deformation, and the inner walls on both sides of the deformation groove 34 are close to each other but not abutted. At this time, the deformation of the flip bracket 3 absorbs the impact force of the occupant and reduces the damage to the occupant.

[0059] When the diving force is further increased, the deformation groove 34 of the flip bracket 3 will be greatly deformed, and the inner walls on both sides of the deformation groove 34 will approach and abut each other, so as to avoid the deformation of the flip bracket 3 being too large so that the supporting end cannot support the legs of the occupant.

[0060] The anti-diving and flipping mechanism provided in the present application is realized by arranging a driving end at an interval on the lower side of the elastic seat pan 11, so that when an occupant dives, the elastic seat pan 11 can be deformed and abut against the driving end, so that the force of the occupant diving is applied to the flip bracket 3; the structural strength of the positioning member itself can prevent the occupant from mistakenly triggering the anti-diving and flipping mechanism to start due to vehicle bumps, and when the force of the occupant diving causes the positioning member to break, the positioning member can absorb part of the force of the occupant diving, reduce the force of the flip bracket 3 on the occupant, and reduce the damage to the occupant; after the flip bracket 3 rotates forward, the supporting end is lifted, and the locking assembly 5 limits the reverse rotation of the flip bracket 3, the flip bracket 3 and the locking assembly 5 cooperate with each other so that the supporting end can support the legs of the occupant to prevent the occupant from continuing to dive, and the deformation groove 34 on the flip bracket 3 can make the flip bracket 3 bend and deform, so that the flip bracket 3 absorbs the force of the occupant diving to reduce the damage to the occupant. Finally, through the cooperation of the flip bracket 3, the positioning piece and the locking assembly 5, when the vehicle collides, the support end remains in a raised state to support the occupant to limit the occupant from diving, and the fracture of the positioning piece and the deformation of the flip bracket 3 can absorb the force of the occupant diving, reducing the damage to the occupant.

[0061] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, there are multiple deformation grooves 34, and the multiple deformation grooves 34 are arranged at intervals along the direction from the support end to the driving end. In this way, the multiple deformation grooves 34 can make the flip bracket 3 bend at multiple locations, increase the bending degree of the flip bracket 3, so that the flip bracket 3 absorbs more impact force and reduces the impact on the occupants, thereby reducing the damage to the occupants when the vehicle collides.

[0062] Specifically, the number of the deformation grooves 34 can be two, and the two deformation grooves 34 are arranged at intervals on the frame body 31 . Of course, the number of the deformation grooves 34 can also be multiple, and the multiple deformation grooves 34 are arranged at intervals on the frame body 31 .

[0063] When the above-mentioned flip bracket 3 deforms and bends, the flip bracket 3 stops deforming after the two opposite side walls of the deformation groove 34 abut against each other. Therefore, the more deformation grooves 34 there are, the greater the bending angle of the flip bracket 3 will be. The number of deformation grooves 34 is adjusted according to experimental data and simulation.

[0064] The deformation groove 34 on the above-mentioned flip bracket 3 weakens the structure of the flip bracket 3. When the impact strength reaches the set tolerable limit, plastic deformation occurs successively, relieving the impact on the occupant's buttocks and absorbing the kinetic energy of the occupant. The arrangement of the deformation groove 34 and the design of the tolerable limit of the flip bracket 3 are carried out through simulation. During the simulation, the backrest inclination angle is 60°, and the simulated collision test speed is 50km / h. When the axial force of the twelfth thoracic vertebra (thoracic vertebra T12) of the occupant reaches 2-5kN, the flip bracket 3 continuously bends and deforms, so that the flip bracket 3 absorbs the impact force while slowing down the restraining effect of the support end on the occupant's buttocks, avoiding the thoracic and lumbar vertebrae of the occupant from being squeezed and injured.

[0065] Reference Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the deformation groove 34 forms two abutment walls 341 arranged opposite to each other in the direction from the support end to the driving end; along the concave direction of the deformation groove 34, the two abutment walls 341 are inclined close to each other. In this way, the two abutment walls 341 are inclined to each other, which can increase the bending and deformation angle of the flip bracket 3, so that the flip bracket 3 can absorb more impact force to reduce the damage to the occupant.

[0066] Specifically, the deformation groove 34 has two abutment walls 341 on both sides of the inner walls opposite to each other along the supporting end toward the driving end, and the deformation groove 34 is concave at the lower side of the flip bracket 3 toward the upper side of the flip bracket 3; the distance between the upper ends of the two abutment walls 341 is smaller than the distance between the lower ends of the two abutment walls 341, and the upper ends of the two abutment walls 341 can be connected to each other, or of course, the upper ends of the two abutment walls 341 can be spaced from each other.

[0067] The deformation groove 34 passes through the frame body 31 along the axial direction of the central axis 2 , and the upper ends of the two abutment walls 341 are connected to each other, so that the deformation groove 34 forms a notch with a triangular cross section on the flip bracket 3 .

[0068] Reference Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the flip bracket 3 includes a frame body 31, a front crossbeam 32 and a rear crossbeam 33; the front crossbeam 32 and the rear crossbeam 33 both extend along the axial direction of the central axis 2, the front crossbeam 32 and the rear crossbeam 33 are respectively connected to the two ends of the frame body 31, the frame body 31 is rotatably connected to the central axis 2, the front crossbeam 32 is arranged on the front side of the central axis 2 as a supporting end, the rear crossbeam 33 is arranged on the rear side of the central axis 2 as a driving end, the rear crossbeam 33 and the elastic seat basin 11 are spaced apart and arranged opposite to each other; the positioning piece is connected between the frame body 31 and the central axis 2, the locking assembly 5 is connected between the frame body 31 and the central axis 2, the deformation groove 34 is arranged on the frame body 31, and the deformation groove 34 is arranged between the front crossbeam 32 and the central axis 2.

[0069] With such arrangement, the flip bracket 3 has a simple structure and low manufacturing cost. The front cross beam 32 and the rear cross beam 33 are respectively used to support the occupant and contact the elastic seat basin 11. The front cross beam 32 and the rear cross beam 33 extend axially along the central axis 2 to facilitate the rear cross beam 33 to abut against the elastic seat basin 11. The front cross beam 32 supports the legs of the occupant.

[0070] Specifically, the frame body 31 can be selected to include two side panels, the two side panels are arranged at intervals along the axial direction of the central axis 2, and the two side panels are rotatably connected to the central axis 2, the front cross beam 32 and the rear cross beam 33 extend along the axial direction of the central axis 2, the front cross beam 32 is connected between the two side panels, and the rear cross beam 33 is connected between the two side panels. The front cross beam 32 and the rear cross beam 33 are respectively on the front and rear sides of the central axis 2, so that the rear cross beam 33 is on the lower side of the elastic seat basin 11, and the rear cross beam 33 and the elastic seat basin 11 are spaced from each other and arranged relative to each other.

[0071] Of course, the frame body 31 can also be selected to be a rectangular frame. The frame body 31 is arranged along the radial direction of the central axis 2. The frame body 31 is rotatably connected to the central axis 2 in the middle of the radial direction of the central axis 2, and the front cross beam 32 and the rear cross beam 33 are respectively connected to the two ends of the frame body 31 along the radial direction of the central axis 2.

[0072] The front cross beam 32 and the rear cross beam 33 extend radially along the central axis 2, increasing the area of ​​the rear cross beam 33 that can contact the elastic seat basin 11, and also increasing the area of ​​the front cross beam 32 used to support the legs of the occupant, making it easier for the front cross beam 32 to support the legs of the occupant to limit the occupant from continuing to dive.

[0073] The locking assembly 5 is connected between the frame body 31 and the central axis 2, and the locking assembly 5 limits the reverse rotation of the frame body 31 relative to the central axis 2. The positioning piece is connected between the frame body 31 and the central axis 2, so that the positioning piece can limit the relative rotation between the frame body 31 and the central axis 2.

[0074] The deformation groove 34 is arranged on the frame body 31 , so that when the front cross beam 32 supports the legs of the occupant, the frame body 31 is subjected to force and bends at the deformation groove 34 , and the bending direction of the frame body 31 is the direction of moving the supporting end downward around the central axis 2 .

[0075] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the rear cross beam 33 includes a first beam body 331 and a second beam body 332, and the second beam body 332 and the first beam body 331 are spaced apart along the direction of the central axis 2 toward the elastic seat basin 11; the elastic seat basin 11 includes a front area and a rear area, and the front area is arranged on the side of the rear area close to the central axis 2, and the first beam body 331 and the second beam body 332 are both arranged opposite to the front area.

[0076] With such arrangement, the passenger tilts the backrest and the seat cushion of the seat relative to the chassis or bottom surface of the vehicle, so that when the seat is in an inclined state, the deformation degree of the front area is relatively large when the passenger dives down, and the first beam body 331 and the second beam body 332 are arranged relative to the front area, which facilitates the contact between the rear cross beam 33 and the elastic seat pot 11. In addition, when the seat is tilted, the buttocks of the passenger will move forward when diving down, and the first beam body 331 and the second beam body 332 are arranged at intervals, which increases the range in which the rear cross beam 33 can contact the elastic seat pot 11, so that the passenger can contact the first beam body 331 and the second beam body 332 during the diving process, ensuring that the diving force can be transmitted to the rear cross beam 33 during the entire diving process of the passenger, so that the flip bracket 3 can continue to flip as the buttocks of the passenger move forward.

[0077] Specifically, the direction from the front side of the central axis of the elastic seat basin 11 to the rear side is the length direction of the elastic seat basin 11. The length dimension of the front area can be selected to be 1 / 5 or 2 / 5 of the length dimension of the elastic seat basin 11, that is, the front area occupies 1 / 5 of the elastic seat basin 11, and the rear area occupies 4 / 5 of the elastic seat basin 11, or the front area occupies 2 / 5 of the elastic seat basin 11, and the rear area occupies 3 / 5 of the elastic seat basin 11. The first beam body 331 and the second beam body 332 are arranged at intervals, which increases the range in which the elastic seat basin 11 can contact the rear cross beam 33.

[0078] The above-mentioned first beam body 331 is arranged on the side of the second beam body 332 away from the central axis 2; when the length dimension of the front area can be selected to be 2 / 5 of the length dimension of the elastic seat basin 11, the projection of the first beam body 331 on the elastic seat basin 11 is the first projection, and the projection of the second beam body 332 on the elastic seat basin 11 is the second projection. The distance between the first projection and the end of the elastic seat basin 11 close to the central axis 2 is 2 / 5 of the length of the elastic seat basin 11, and the distance between the second projection and the end of the elastic seat basin 11 close to the central axis 2 is 1 / 5 of the length of the elastic seat basin 11.

[0079] The distances between the first beam 331 and the second beam 332 and the elastic seat pan 11 are designed based on experimental data and simulation to ensure that the elastic seat pan 11 does not squeeze the first beam 331 and the second beam 332 when the occupant sits normally or under static impact.

[0080] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the locking assembly 5 includes a ratchet 51 and a limiting column 52; the ratchet 51 is sleeved on the central axis 2, the ratchet 51 is rotationally connected to the central axis 2, and the ratchet 51 is fixedly connected to the flip bracket 3; the limiting column 52 is fixedly connected to the central axis 2, the limiting column 52 abuts against the ratchet 51, and when the flip bracket 3 rotates in the opposite direction, the limiting column 52 limits the ratchet 51 from rotating relative to the central axis 2.

[0081] In this way, the ratchet 51 and the limiting column 52 have a simple structure and low setting cost, and when the flip bracket 3 rotates forward, the flip bracket 3 is limited every time it rotates through a sawtooth of the ratchet 51. When the force of the occupant diving is small, so that the angle of rotation of the flip bracket 3 is small, the cooperation of the ratchet 51 and the limiting column 52 can also limit the reverse rotation of the flip bracket 3, so that the support end can support the legs of the occupant, and the locking assembly 5 can limit the flip bracket 3 when the flip bracket 3 rotates forward at various angles relative to the central axis 2.

[0082] Specifically, a through hole is provided in the middle of the ratchet 51, and the central axis 2 passes through the through hole of the ratchet 51. The ratchet 51 can be selected to be attached to one side of the frame body 31 along the axial direction of the central axis 2. The ratchet 51 and the frame body 31 can be selected to be connected to each other by welding. Of course, the ratchet 51 and the frame body 31 can also be connected by bolts or screws.

[0083] A vertical plate can be optionally set on the above-mentioned central axis 2, and the vertical plate is set along the radial direction of the central axis 2. The limit column 52 is installed on the vertical plate, so that the limit column 52 can be set opposite to the ratchet 51 in the radial direction of the central axis 2, and the limit column 52 abuts against the serrated structure on the surface of the ratchet 51, one side of the serrated structure is an arc surface, and the other side is a plane; the limit column 52 can be selected to be elastic. When the frame body 31 rotates forward, the limit column 52 abuts against the arc surface of the tooth pitch structure of the ratchet 51, and the limit column 52 elastically deforms to enable the ratchet 51 to rotate forward; when the frame body 31 rotates reversely, the plane of the ratchet 51 abuts against the limit column 52, and the elastic deformation of the limit column 52 cannot cause the ratchet 51 to rotate reversely.

[0084] Of course, the limiting column 52 and the vertical plate may be slidably connected, and a spring may be connected between the limiting column 52 and the vertical plate, and the elastic force of the spring may cause the limiting column 52 to tightly abut against the ratchet 51 .

[0085] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the limiting column 52 includes an elastic member 522, a locking tongue 521 and a mounting plate 523; the mounting plate 523 is fixedly mounted on the central axis 2, the mounting plate 523 and the ratchet 51 are radially spaced apart along the central axis 2, the locking tongue 521 is disposed between the mounting plate 523 and the ratchet 51, the locking tongue 521 and the mounting plate 523 are radially slidably connected along the central axis 2, the elastic member 522 is disposed between the locking tongue 521 and the mounting plate 523, and one end of the locking tongue 521 away from the mounting plate 523 abuts against the ratchet 51.

[0086] With such arrangement, the elastic member 522 drives the locking tongue 521 to abut against the ratchet 51, so that the locking tongue 521 tightly abuts against the ratchet 51. When the ratchet 51 rotates forward, the elastic member 522 elastically deforms to allow the locking tongue 521 to slide on the arc surface of the sawtooth structure of the ratchet 51, so that the locking tongue 521 will not hinder the forward rotation of the ratchet 51. When the ratchet 51 rotates reversely, the elastic member 522 causes the locking tongue 521 to abut against one side of the plane of the sawtooth structure, so that the ratchet 51 cannot rotate reversely. The elastic member 522 improves the stability of the connection between the locking tongue 521 and the ratchet 51.

[0087] Specifically, the mounting plate 523 may be selected to be arranged along the radial direction of the central axis 2, and the central axis 2 may be provided with a sleeve, which is sleeved on the central axis 2, and the central axis 2 is provided with a fixing hole, and the sleeve is provided with a mounting hole, and a metal pin is used to penetrate the fixing hole and the mounting hole, so that the sleeve is fixedly connected to the central axis 2. The mounting plate 523 is connected to the sleeve, and a bottom plate is provided at one end of the mounting plate 523 away from the central axis 2, and the bottom plate and the central axis 2 are spaced apart along the radial direction of the central axis 2, and the locking tongue 521 is connected to a side surface of the bottom plate facing the central axis 2. Of course, a column extending along the radial direction of the central axis 2 may also be selected to be provided on the mounting plate 523, and the locking tongue 521 is slidably connected to the column of the mounting plate 523.

[0088] The above-mentioned elastic member 522 can be selected as a spring or an elastic sheet. The elastic member 522 is arranged between the lock tongue 521 and the mounting plate 523. The elastic force of the elastic member 522 drives the lock tongue 521 to move toward the central axis 2, so that the lock tongue 521 is abutted and connected with the ratchet 51, so that the lock tongue 521 abuts on the ratchet 51 under the drive of the elastic force of the elastic member 522.

[0089] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the positioning member includes a nylon pin 41, a first pin hole is provided on the central axis 2, and a second pin hole is provided on the flip bracket 3. The first pin hole and the second pin hole are arranged radially along the central axis 2, and the first pin hole and the second pin hole are arranged coaxially. The nylon pin 41 is plug-connected with the first pin hole and the second pin hole so that when the driving end is under pressure, the nylon pin 41 is subjected to a shear force along the circumference of the central axis 2.

[0090] In this way, the nylon pin 41 is subjected to shear force, and the force that causes the nylon pin 41 to break is related to the diameter of the nylon pin 41. By adjusting the diameter of the nylon pin 41, the nylon pin 41 can be adapted to the force required to trigger the anti-submarine flip mechanism. The nylon pin 41 is plugged into the first pin hole and the second pin hole, making the assembly operation of the positioning member, the flip bracket 3 and the central axis 2 simple.

[0091] Specifically, the nylon pin 41 is a column structure, the first pin hole is set on the side of the central axis 2, the second pin hole is set at the connection between the flip bracket 3 and the central axis 2, the first pin hole is set along the radial direction of the central axis 2, and the second pin hole is set along the radial direction of the central axis 2, so that when the first pin hole and the second pin hole are coaxial, the nylon pin 41 can be simultaneously inserted into the first pin hole and the second pin hole. Of course, it is also possible to select that the flip bracket 3 is connected to the central axis 2 through a shaft sleeve 42, the second pin is set on the shaft sleeve 42, and the shaft sleeve 42 covers the first pin hole. When the first pin hole and the second pin hole are coaxial, the nylon pin 41 can be simultaneously inserted into the first pin hole and the second pin hole.

[0092] The diameter of the above-mentioned nylon pin 41 can be modified according to actual needs, so that the nylon pin 41 has different strengths. The strength of the nylon pin 41 is determined based on experiments and simulations, so that the nylon pin 41 breaks when the occupant dives, and the force exerted by the occupant on the nylon pin 41 when the vehicle bumps will not cause the nylon pin 41 to break.

[0093] The force exerted on the nylon pin 41 by the above-mentioned flip bracket 3 rotating relative to the central axis 2 is along the circumferential direction of the central axis 2, so that the nylon pin 41 is subjected to shear force. The force that causes the nylon pin 41 to break is related to the diameter of the nylon pin 41.

[0094] Reference Figure 1 , Figure 2 and Figure 3 In a second aspect of the present application, there is provided a seat, comprising a seating portion 61, a seat back 62 and an anti-diving and flipping mechanism as described in any one of the above items; the seat back 62 is connected to one end of the seating portion 61, the seat frame 1 is installed inside the seating portion 61, and the central axis 2 is arranged on the side of the elastic seat basin 11 away from the seat back 62.

[0095] The above-mentioned sitting part 61 is used for passengers to sit on. The buttocks of the passengers sit on the sitting part 61 close to the seat back 62, so that when the support end is raised, the support end can be supported at the position of the legs of the passengers.

[0096] By providing the above-mentioned anti-diving mechanism in the seating portion 61, the occupant sits on the seating portion 61 with his buttocks on the elastic seat pan 11. When the vehicle collides, the occupant dives and the driving end is compressed. The positioning piece breaks and causes the flip bracket 3 to rotate forward. The locking assembly 5 limits the flip bracket 3 from rotating in the reverse direction. The supporting end is lifted to support the occupant's legs, limiting the occupant from continuing to dive. The flip bracket 3 is deformed and bent to absorb the impact force, thereby reducing the damage to the occupant.

[0097] A third aspect of the embodiments of the present application also provides a vehicle, comprising the seat as described above.

[0098] By using the above-mentioned seat, the supporting end is lifted to limit the occupant from further diving when the vehicle collides, and the bending of the flip bracket 3 can absorb the impact force, thereby reducing the damage to the occupant.

[0099] When the anti-diving and flipping mechanism, seat and vehicle provided by the embodiment of the present application are used, the seat frame 1 is installed in the seating portion 61, the frame body 31 is rotatably connected to the central axis 2, the positioning piece is plug-connected to the first pin hole and the second pin hole, and the occupant sits on the seating portion 61 with the occupant's buttocks at the elastic seat basin 11.

[0100] When the vehicle collides, the occupant dives, and the diving force of the occupant increases the deformation degree of the elastic seat pan 11, so that the elastic seat pan 11 contacts the rear cross beam 33, and the diving force of the occupant is applied to the nylon pin 41 through the rear cross beam and the frame body 31. The nylon pin 41 is sheared and broken, the rear cross beam 33 moves downward, and the frame body 31 rotates forward, so that the front cross beam 32 is lifted, and the locking tongue 521 abuts against the ratchet 51 to limit the reverse rotation of the frame body 31, so that the rear cross beam 33 supports the legs of the occupant.

[0101] When the occupant dives, when the diving force is small, the frame body 31 maintains a stable position under the action of the locking assembly 5, so that the front cross beam 32 supports the occupant's legs. The structural strength of the frame body 31 can bear the force transmitted by the occupant, and the frame body 31 does not deform.

[0102] When the diving force increases, the deformation groove 34 provided on the frame body 31 undergoes a certain degree of deformation, and the two abutting walls 341 approach each other but do not abut. At this time, the deformation of the frame body 31 absorbs the impact force of the occupants and reduces the injuries to the occupants.

[0103] When the diving force is further increased, the deformation groove 34 of the frame body 31 undergoes a large degree of deformation, and the two abutment walls 341 approach and abut each other, so that the frame body 31 maintains structural stability and stops bending and deformation, thereby preventing the flip bracket 3 from deforming too much and the front cross beam 32 from being unable to support the occupant's legs.

[0104] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0105] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-submarine and flipping mechanism, characterized in that: include: A seat frame (1) is provided with an elastic seat pan (11) for carrying passengers; A central axis (2) connected to the seat frame (1) and arranged on the front side of the elastic seat basin (11); A flip bracket (3), the middle part of which is rotatably connected to the central axis (2), comprising a supporting end and a driving end located on both sides of the central axis (2), the driving end being suspended and arranged at the lower side of the elastic seat basin (11), and the driving end being spaced apart from the elastic seat basin (11); A positioning member connected between the flip bracket (3) and the central axis (2) to limit the rotation of the flip bracket (3) relative to the central axis (2); when the passenger dives down and causes the elastic seat basin (11) to press down the driving end, the positioning member breaks, so that the flip bracket (3) rotates in the forward direction and simultaneously drives the supporting end to rise; A locking assembly (5) is arranged between the flip bracket (3) and the central axis (2) to limit the reverse rotation of the flip bracket (3); The lower side of the flip bracket (3) is recessed to form a deformation groove (34), and the deformation groove (34) is arranged between the support end and the central axis (2).

2. The anti-submarine and flipping mechanism according to claim 1, characterized in that: The number of the deformation grooves (34) is multiple, and the multiple deformation grooves (34) are arranged at intervals along the direction from the supporting end to the driving end.

3. The anti-submarine and flipping mechanism according to claim 1, characterized in that: The deformation groove (34) forms two abutment walls (341) arranged opposite to each other along the direction from the support end toward the drive end; Along the recessed direction of the deformation groove (34), the two abutment walls (341) are inclined close to each other.

4. The anti-submarine and flipping mechanism according to claim 1, characterized in that: The flip bracket (3) comprises a frame body (31), a front crossbeam (32) and a rear crossbeam (33); The front cross beam (32) and the rear cross beam (33) both extend along the axial direction of the central axis (2); the front cross beam (32) and the rear cross beam (33) are respectively connected to two ends of the frame body (31); the frame body (31) is rotatably connected to the central axis (2); the front cross beam (32) is arranged on the front side of the central axis (2) as the supporting end; the rear cross beam (33) is arranged on the rear side of the central axis (2) as the driving end; the rear cross beam (33) and the elastic seat basin (11) are spaced apart from each other and arranged opposite to each other; The positioning member is connected between the frame body (31) and the central axis (2), the locking assembly (5) is connected between the frame body (31) and the central axis (2), the deformation groove (34) is arranged on the frame body (31), and the deformation groove (34) is arranged between the front cross beam (32) and the central axis (2).

5. The anti-submarine and flipping mechanism according to claim 4, characterized in that: The rear cross beam (33) comprises a first beam body (331) and a second beam body (332), wherein the second beam body (332) and the first beam body (331) are arranged at intervals along the central axis (2) in a direction toward the elastic seat basin (11); The elastic seat basin (11) comprises a front area and a rear area, the front area is arranged on a side of the rear area close to the central axis (2), and the first beam body (331) and the second beam body (332) are both arranged opposite to the front area.

6. The anti-submarine and flipping mechanism according to claim 1, characterized in that: The locking assembly (5) comprises a ratchet (51) and a limiting column (52); The ratchet (51) is sleeved on the central shaft (2), the ratchet (51) is rotationally connected to the central shaft (2), and the ratchet (51) is fixedly connected to the flip bracket (3); The limiting column (52) is fixedly connected to the central axis (2), and the limiting column (52) abuts against the ratchet (51). When the flip bracket (3) rotates in the opposite direction, the limiting column (52) limits the ratchet (51) from rotating relative to the central axis (2).

7. The anti-submarine and flipping mechanism according to claim 6, characterized in that: The limiting column (52) comprises an elastic member (522), a locking tongue (521) and a mounting plate (523); The mounting plate (523) is fixedly mounted on the central axis (2); the mounting plate (523) and the ratchet (51) are arranged at intervals along the radial direction of the central axis (2); the locking tongue (521) is arranged between the mounting plate (523) and the ratchet (51); the locking tongue (521) and the mounting plate (523) are slidably connected along the radial direction of the central axis (2); the elastic member (522) is arranged between the locking tongue (521) and the mounting plate (523); and one end of the locking tongue (521) away from the mounting plate (523) abuts against the ratchet (51).

8. The anti-submarine and flipping mechanism according to claim 1, characterized in that: The positioning member comprises a nylon pin (41), a first pin hole is provided on the central axis (2), a second pin hole is provided on the flip bracket (3), the first pin hole and the second pin hole are arranged along the radial direction of the central axis (2), the first pin hole and the second pin hole are arranged coaxially, and the nylon pin (41) is plug-connected with the first pin hole and the second pin hole so that when the driving end is pressed, the nylon pin (41) is subjected to a shear force along the circumferential direction of the central axis (2).

9. A seat, characterized in that: It comprises a seating portion (61), a chair back (62) and an anti-diving and flipping mechanism as claimed in any one of claims 1 to 8; The chair back (62) is connected to one end of the seating portion (61), the seat frame (1) is installed inside the seating portion (61), and the central axis (2) is arranged on a side of the elastic seat pan (11) away from the chair back (62).

10. A vehicle, characterized in that: Comprising the seat as claimed in claim 9.

Images