Zero-gravity seat backrest passive energy absorption safety structure and automobile seat

Abstract

The invention provides a zero-gravity seat backrest passive energy absorption safety structure and an automobile seat, and relates to the technical field of automobile seat equipment. The zero-gravity seat backrest passive energy absorption safety structure comprises a backrest framework connecting plate, a seat cushion framework, an energy absorption nut and a locking assembly. One end of the bottom of the backrest framework connecting plate is pivoted with the seat cushion framework, an energy-absorbing nut is arranged at the other end of the bottom of the backrest framework connecting plate, an energy-absorbing sliding groove hole is formed in the seat cushion framework, the energy-absorbing nut is inserted into the energy-absorbing sliding groove hole, an energy-absorbing block is arranged on the seat cushion framework, and the energy-absorbing block is connected with the energy-absorbing nut; the locking assembly is arranged on the seat cushion framework, the locking assembly is in transmission connection with the energy absorption nut, and the locking assembly is used for controlling whether the energy absorption nut can move in the energy absorption sliding groove hole or not. The automobile seat comprises the zero-gravity seat backrest passive energy absorption safety structure. The technical effect of improving the safety of the zero-gravity seat during vehicle collision is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive seat equipment, and more particularly, to a passive energy absorption safety structure for a zero-gravity seat backrest and an automotive seat. Background Art

[0002] With the rapid development of science and technology, various new technologies in the automotive industry have emerged like bamboo shoots after a spring rain, which also makes people put forward higher and higher requirements for the comfort and safety of vehicle rides. Zero-gravity seats, with their ultra-high comfort, have developed rapidly in the industry and have been widely used, but there are gaps in the safety performance of zero-gravity seats.

[0003] In the zero-gravity mode, the passenger is in a lying position, and the adjustment range of the seat belt is limited. When the vehicle undergoes a high-speed collision, the magnitude and direction of the restraint force of the seat belt on the body are extremely different from those in the normal sitting position, and problems such as submarining are likely to occur, resulting in a much higher accident mortality rate and a more serious level of injury in the zero-gravity mode than in the normal sitting position. Therefore, it is very urgent to improve the driving safety of zero-gravity seats in the high-speed mode. Summary of the Invention

[0004] The purpose of the present invention is to provide a passive energy absorption safety structure for a zero-gravity seat backrest and an automotive seat to alleviate the technical problem of low safety of zero-gravity seats during vehicle collisions in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a passive energy absorption safety structure for a zero-gravity seat backrest, including a backrest frame connecting plate, a seat cushion frame, an energy absorption nut, and a locking assembly;

[0006] One end of the bottom of the backrest frame connecting plate is pivotally connected to the seat cushion frame, and the other end is provided with an energy absorption nut. An energy absorption chute hole is formed on the seat cushion frame, and the energy absorption nut is inserted into the energy absorption chute hole. An energy absorption block is arranged on the seat cushion frame, and the energy absorption block is connected to the energy absorption nut;

[0007] The locking assembly is arranged on the seat cushion frame, and the locking assembly is in transmission connection with the energy absorption nut, and the locking assembly is used to control whether the energy absorption nut can move in the energy absorption chute hole.

[0008] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein, multiple tearing belts are provided on the energy absorption block, and the tearing belts are connected to the energy absorption nut.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein, the energy absorption nut and the energy absorption block are of an integral structure.

[0010] Combined with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned energy-absorbing chute hole includes an assembly circular groove hole and an energy-absorbing arc groove that communicate with each other;

[0011] The assembly circular groove hole is located above the energy-absorbing arc groove;

[0012] The assembly circular groove hole is in transitional fit with the energy-absorbing nut, and the energy-absorbing arc groove is in interference fit with the energy-absorbing nut.

[0013] Combined with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned locking component includes a locking member and a triggering member;

[0014] The locking member is arranged on the seat cushion skeleton, and the locking member is connected to the energy-absorbing nut;

[0015] The triggering member is arranged on the seat cushion skeleton, and the triggering member is in transmission connection with the locking member.

[0016] Combined with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned locking member includes a mounting substrate, a lock plate member and a lock tongue plate;

[0017] The mounting substrate is arranged on the seat cushion skeleton, and both the lock plate member and the lock tongue plate are pivotally connected to the mounting substrate;

[0018] The lock plate member is in transmission connection with the lock tongue plate, the lock plate member can limit the rotation of the lock tongue plate, and the lock tongue plate is connected to the energy-absorbing nut.

[0019] Combined with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned lock plate member includes a first lock plate and a second lock plate;

[0020] Both the first lock plate and the second lock plate are pivotally connected to the mounting substrate, and a return torsion spring is arranged between both the first lock plate and the second lock plate and the mounting substrate;

[0021] A card slot is formed on the lock tongue plate, and both the first lock plate and the second lock plate can be engaged with the card slot. When the triggering member is not triggered, the second lock plate is engaged with the card slot, and when the triggering member is triggered, the first lock plate is engaged with the card slot.

[0022] Combined with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, a bearing groove is formed at one end of the lock tongue plate away from the lock plate member, and the energy-absorbing nut is located in the bearing groove.

[0023] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the triggering member includes a triggering actuator and a triggering cable. The triggering actuator is arranged on the seat cushion frame, and the triggering actuator is in transmission connection with the second lock plate through the triggering cable.

[0024] In a second aspect, an embodiment of the present invention provides an automotive seat, including the zero-gravity seat back passive energy absorption safety structure.

[0025] Beneficial effects:

[0026] An embodiment of the present invention provides a zero-gravity seat back passive energy absorption safety structure, including a backrest frame connecting plate, a seat cushion frame, an energy absorption nut, and a locking component; one end of the bottom of the backrest frame connecting plate is pivotally connected to the seat cushion frame, and the other end is provided with an energy absorption nut. An energy absorption chute hole is provided on the seat cushion frame, and the energy absorption nut is inserted into the energy absorption chute hole. An energy absorption block is arranged on the seat cushion frame, and the energy absorption block is connected to the energy absorption nut; the locking component is arranged on the seat cushion frame, and the locking component is in transmission connection with the energy absorption nut, and the locking component is used to control whether the energy absorption nut can move in the energy absorption chute hole.

[0027] Specifically, when the automotive seat is in the zero-gravity mode state, if a frontal collision accident occurs to the vehicle, the seat back will move forward due to inertia. The seat back drives the backrest frame connecting plate to rotate. At the same time, the locking component is triggered so that the locking component no longer restricts the energy absorption nut. The backrest frame connecting plate will press the energy absorption nut to slide in the energy absorption chute hole, and the energy absorption nut can tear the energy absorption block, thereby absorbing the impact force of the seat back and reducing the harm to the user.

[0028] An embodiment of the present invention provides an automotive seat, including a zero-gravity seat back passive energy absorption safety structure. The automotive seat has the above-mentioned advantages compared with the prior art, which will not be elaborated here. Description of the drawings

[0029] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the zero-gravity seat back passive energy absorption safety structure provided by an embodiment of the present invention;

[0031] Figure 2 It is an internal schematic diagram of the zero-gravity seat back passive energy absorption safety structure provided by an embodiment of the present invention;

[0032] Figure 3 Internal structure schematic diagram of the passive energy absorption safety structure of the zero-gravity seat back provided by the embodiment of the present invention;

[0033] Figure 4 Connection schematic diagram of the locking component and the energy absorption nut of the passive energy absorption safety structure of the zero-gravity seat back provided by the embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the seat cushion skeleton in the passive energy absorption safety structure of the zero-gravity seat back provided by the embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the energy absorption nut and the energy absorption block in the passive energy absorption safety structure of the zero-gravity seat back provided by the embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the locking component in the passive energy absorption safety structure of the zero-gravity seat back provided by the embodiment of the present invention.

[0037] Icon:

[0038] 100 - Backrest skeleton connecting plate;

[0039] 200 - Seat cushion skeleton; 210 - Energy absorption chute hole; 211 - Assembly round hole; 212 - Energy absorption arc groove; 220 - Energy absorption block; 230 - Tear strip;

[0040] 300 - Energy absorption nut;

[0041] 400 - Locking component; 410 - Locking piece; 411 - Installation substrate; 412 - Locking plate piece; 4121 - First locking plate; 4122 - Second locking plate; 4123 - Return torsion spring; 413 - Lock tongue plate; 4131 - Card slot; 4132 - Support groove; 420 - Trigger piece; 421 - Trigger cable. Detailed implementation manners

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0045] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The present invention will be further described in detail below through specific embodiments in conjunction with the drawings.

[0047] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown in the figure, this embodiment provides a passive energy absorption safety structure for a zero-gravity seat back, including a backrest frame connecting plate 100, a seat cushion frame 200, an energy absorption nut 300, and a locking assembly 400; one end of the bottom of the backrest frame connecting plate 100 is pivotally connected to the seat cushion frame 200, and an energy absorption nut 300 is arranged at the other end. An energy absorption sliding groove hole 210 is formed on the seat cushion frame 200, and the energy absorption nut 300 is inserted into the energy absorption sliding groove hole 210. An energy absorption block 220 is arranged on the seat cushion frame 200, and the energy absorption block 220 is connected to the energy absorption nut 300; the locking assembly 400 is arranged on the seat cushion frame 200, the locking assembly 400 is in transmission connection with the energy absorption nut 300, and the locking assembly 400 is used to control whether the energy absorption nut 300 can move in the energy absorption sliding groove hole 210.

[0048] Specifically, when the vehicle seat is in the zero-gravity mode, if a frontal collision accident occurs to the vehicle, the seat back will move forward due to inertia. The seat back drives the backrest frame connecting plate 100 to rotate. At the same time, the locking assembly 400 is triggered so that the locking assembly 400 no longer restricts the energy absorption nut 300. The backrest frame connecting plate 100 presses the energy absorption nut 300 to slide in the energy absorption sliding groove hole 210. The energy absorption nut 300 can tear the energy absorption block 220, thereby absorbing the impact force of the seat back and reducing the harm to the user.

[0049] See Figure 1 - Figure 7 As shown in the figure, in an alternative solution of this embodiment, the energy absorption block 220 has a plurality of tearing belts 230, and the tearing belts 230 are connected to the energy absorption nut 300.

[0050] Among them, the energy absorption nut 300 and the energy absorption block 220 are of an integral structure.

[0051] Among them, the energy absorption sliding groove hole 210 includes an assembly circular groove hole 211 and an energy absorption arc groove 212 that are communicated with each other; the assembly circular groove hole 211 is located above the energy absorption arc groove 212; the assembly circular groove hole 211 is in transitional fit with the energy absorption nut 300, and the energy absorption arc groove 212 is in interference fit with the energy absorption nut 300.

[0052] Specifically, the energy-absorbing nut 300 and the energy-absorbing block 220 are of an integral structure. When the energy-absorbing nut 300 is driven by the back-bone connecting plate to slide in the energy-absorbing chute hole 210 of the seat cushion frame 200, the energy-absorbing nut 300 will not break the multiple tearing belts 230 connecting it to the energy-absorbing block 220, thus achieving energy absorption in the first stage. At this time, the energy-absorbing nut 300 moves from the assembly round groove hole 211 to the energy-absorbing arc groove 212. Moreover, when the energy-absorbing nut 300 enters the energy-absorbing arc groove 212, the energy-absorbing nut 300 will expand the energy-absorbing arc groove 212, thus achieving energy absorption in the second stage. When the energy-absorbing nut 300 moves to the bottom of the energy-absorbing chute hole 210, it can make the seat backrest return from the zero-gravity mode to the normal angle, and during this process, it can consume the impact force of the seat backrest and reduce the harm to the user.

[0053] See Figure 1 - Figure 7 As shown, in an alternative solution of this embodiment, the locking assembly 400 includes a locking member 410 and a triggering member 420; the locking member 410 is arranged on the seat cushion frame 200, and the locking member 410 is connected to the energy-absorbing nut 300; the triggering member 420 is arranged on the seat cushion frame 200, and the triggering member 420 is in transmission connection with the locking member 410.

[0054] Among them, the triggering member 420 includes a triggering actuator and a triggering cable 421. The triggering actuator is arranged on the seat cushion frame 200, and the triggering actuator is in transmission connection with the second lock plate 4122 through the triggering cable 421.

[0055] Specifically, when a frontal collision occurs to the vehicle, the triggering actuator will be triggered, and then the triggering actuator pulls the triggering cable 421, and the triggering cable 421 will pull the locking member 410, thereby releasing the limitation of the locking member 410 on the energy-absorbing nut 300. When the locking member 410 limits the energy-absorbing nut 300, the back-bone connecting plate cannot drive the energy-absorbing nut 300 to move in the energy-absorbing chute hole 210.

[0056] Among them, the triggering actuator can adopt devices such as a motor, explosives, etc. Those skilled in the art can select according to actual needs and will not be elaborated here.

[0057] See Figure 1 - Figure 7 As shown, in an alternative solution of this embodiment, the locking member 410 includes a mounting substrate 411, a lock plate member 412, and a lock tongue plate 413; the mounting substrate 411 is arranged on the seat cushion frame 200, and both the lock plate member 412 and the lock tongue plate 413 are pivotally connected to the mounting substrate 411; the lock plate member 412 is in transmission connection with the lock tongue plate 413, the lock plate member 412 can limit the rotation of the lock tongue plate 413, and the lock tongue plate 413 is connected to the energy-absorbing nut 300.

[0058] Among them, the lock plate member 412 includes a first lock plate 4121 and a second lock plate 4122; both the first lock plate 4121 and the second lock plate 4122 are pivotally connected to the mounting substrate 411, and a return torsion spring 4123 is provided between both the first lock plate 4121 and the second lock plate 4122 and the mounting substrate 411; a clamping groove 4131 is formed on the lock tongue plate 413, and both the first lock plate 4121 and the second lock plate 4122 can be clamped with the clamping groove 4131. When the trigger member 420 is not triggered, the second lock plate 4122 is clamped with the clamping groove 4131, and when the trigger member 420 is triggered, the first lock plate 4121 is clamped with the clamping groove 4131.

[0059] Among them, a bearing groove 4132 is formed at one end of the lock tongue plate 413 away from the lock plate member 412, and the energy-absorbing nut 300 is located in the bearing groove 4132.

[0060] Specifically, when the trigger actuator is triggered, it can pull the trigger cable 421. The trigger cable 421 can pull the second lock plate 4122 to rotate, and the energy-absorbing nut 300 can press the bearing groove 4132 to move downward, so that the second lock plate 4122 disengages from the clamping groove 4131 of the lock tongue plate 413. When the energy-absorbing nut 300 moves to the bottom of the energy-absorbing chute hole 210, the clamping groove 4131 of the lock tongue plate 413 is clamped with the first lock plate 4121.

[0061] In addition, a return torsion spring 4123 is provided between both the first lock plate 4121 and the second lock plate 4122 and the mounting substrate 411. By providing the return torsion spring 4123, it can keep both the first lock plate 4121 and the second lock plate 4122 in contact with the lock tongue plate 413, so that the second lock plate 4122 can be stuck in the clamping groove 4131 when the trigger actuator is not triggered, and the first lock plate 4121 can be in contact with the lock tongue plate 413.

[0062] This embodiment provides an automobile seat, including a zero-gravity seat back passive energy-absorbing safety structure.

[0063] Specifically, the automobile seat provided in this embodiment has the advantages of the above-mentioned zero-gravity seat back passive energy-absorbing safety structure compared with the prior art, which will not be elaborated here.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A passive energy absorption safety structure for a zero-gravity seat back, characterized in that, Comprising: a backrest frame connecting plate (100), a seat cushion frame (200), an energy-absorbing nut (300), and a locking assembly (400); One end of the bottom of the backrest frame connecting plate (100) is pivotally connected to the seat cushion frame (200), and an energy-absorbing nut (300) is provided at the other end. An energy-absorbing sliding groove hole (210) is formed on the seat cushion frame (200), the energy-absorbing nut (300) is inserted into the energy-absorbing sliding groove hole (210), an energy-absorbing block (220) is provided on the seat cushion frame (200), and the energy-absorbing block (220) is connected to the energy-absorbing nut (300); The locking assembly (400) is provided on the seat cushion frame (200), the locking assembly (400) is in driving connection with the energy-absorbing nut (300), and the locking assembly (400) is used to control whether the energy-absorbing nut (300) can move in the energy-absorbing sliding groove hole (210).

2. The zero-gravity seat back passive energy absorption safety structure according to claim 1, wherein, The energy-absorbing block (220) has a plurality of tearing belts (230), and the tearing belts (230) are connected to the energy-absorbing nut (300).

3. The passive energy absorption safety structure of the zero-gravity seat back according to claim 2, wherein, The energy-absorbing nut (300) and the energy-absorbing block (220) are of an integral structure.

4. The zero-gravity seat back passive energy absorption safety structure according to claim 1, characterized in that, The energy-absorbing sliding groove hole (210) includes an assembly circular groove hole (211) and an energy-absorbing arc groove (212) that are communicated with each other; The assembly circular groove hole (211) is located above the energy-absorbing arc groove (212); The assembly circular groove hole (211) is in transitional fit with the energy-absorbing nut (300), and the energy-absorbing arc groove (212) is in interference fit with the energy-absorbing nut (300).

5. The zero-gravity seat back passive energy absorption safety structure according to claim 1, characterized in that, The locking assembly (400) includes a locking member (410) and a triggering member (420); The locking member (410) is provided on the seat cushion frame (200), and the locking member (410) is connected to the energy-absorbing nut (300); The triggering member (420) is provided on the seat cushion frame (200), and the triggering member (420) is in driving connection with the locking member (410).

6. The zero-gravity seat back passive energy absorption safety structure according to claim 5, characterized in that, The locking member (410) includes a mounting substrate (411), a lock plate member (412), and a lock tongue plate (413); The mounting substrate (411) is provided on the seat cushion frame (200), and both the lock plate member (412) and the lock tongue plate (413) are pivotally connected to the mounting substrate (411); The lock plate member (412) is in driving connection with the lock tongue plate (413), the lock plate member (412) can limit the rotation of the lock tongue plate (413), and the lock tongue plate (413) is connected to the energy-absorbing nut (300).

7. The passive energy absorption safety structure of the zero-gravity seat back according to claim 6, characterized in that, The lock plate member (412) includes a first lock plate (4121) and a second lock plate (4122); Both the first lock plate (4121) and the second lock plate (4122) are pivotally connected to the mounting substrate (411), and a return torsion spring (4123) is provided between both the first lock plate (4121) and the second lock plate (4122) and the mounting substrate (411); A clamping groove (4131) is formed in the locking tongue plate (413). Both the first locking plate (4121) and the second locking plate (4122) can be clamped with the clamping groove (4131). When the triggering member (420) is not triggered, the second locking plate (4122) is clamped with the clamping groove (4131). When the triggering member (420) is triggered, the first locking plate (4121) is clamped with the clamping groove (4131).

8. The passive energy absorption safety structure of the zero-gravity seat back according to claim 6, characterized in that, A supporting groove (4132) is formed at one end of the locking tongue plate (413) away from the locking plate member (412). The energy-absorbing nut (300) is located in the supporting groove (4132).

9. The zero-gravity seat back passive energy absorption safety structure according to claim 7, characterized in that, The triggering member (420) includes a triggering actuator and a triggering cable (421). The triggering actuator is arranged on the seat cushion frame (200). The triggering actuator is in transmission connection with the second locking plate (4122) through the triggering cable (421).

10. An automotive seat, characterized in that, It includes the zero-gravity seat back passive energy-absorbing safety structure according to any one of claims 1-9.

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