Crumple structure and seat with same

Abstract

The utility model relates to a crumple structure and a seat with the crumple structure, the crumple structure is used for the seat, a connecting rod assembly used for adjusting the height and the angle of a seat cushion is connected between the front end of the seat cushion of the seat and a base, the seat cushion comprises a left side plate and a right side plate, and the left side plate and the right side plate are arranged on the base. The connecting rod assembly comprises a left connecting rod and a right connecting rod which are located on the two sides of the seat cushion respectively, the crumple structure comprises a crumple pipe connected between the left connecting rod and the right connecting rod or between the left side plate and the right side plate, and the crumple pipe is provided with an indentation structure. The indentation structure meets the requirement that when the seat is impacted, the crumple pipe is promoted to deform so as to absorb and buffer impact force. According to the utility model, the crumple pipe is additionally arranged at the front end of the seat, so that the seat can crumple according to a required direction and a specific speed when collision occurs at a zero-gravity position, the return and energy absorption of a human body posture are realized, the collision energy is reduced, passengers are protected, the overall structure is simple, and no extra space is occupied.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a collapse structure and a seat with the collapse structure. Background Art

[0002] Since zero-gravity seats have rich adjustment capabilities and greatly improve riding comfort, they are increasingly used. However, zero-gravity seats have many problems in terms of collision safety. Figures 1 to 3 As shown, a connecting rod assembly for adjusting the height and angle of the seat cushion 2 is connected between the front end of the seat cushion 2 and the base 1. The connecting rod assembly includes a left connecting rod 31 and a right connecting rod 32 located on both sides of the seat cushion 2. By adjusting the height and angle of the seat cushion 2, the seat can be adjusted from the designed position to the zero pressure position. When the seat is at the zero pressure position, if a frontal collision occurs, the seat cushion 2 will be subjected to a downward impact force F1, and the left connecting rod 31 and the right connecting rod 32 will be subjected to a lateral impact force F2, so that the left connecting rod 31 and the right connecting rod 32 will tilt inward, as shown in FIG. Figure 2 and Figure 3 As shown, Figure 3 A comparative schematic diagram of the inward tilting of the link assembly before and after the collision is shown, wherein the left link 31 tilts inward by about 70 degrees and the right link 32 tilts inward by about 50 degrees, causing severe bending and deformation of the middle portion of the seat cushion, which can easily lead to damage to the seat frame, thereby increasing occupant injuries.

[0003] How to solve the collision safety of passengers in zero gravity has become a key problem restricting the current development of car seats. The following patents disclose some solutions:

[0004] 1. Patent CN217515015U discloses a zero-gravity seat that can quickly return to its original position when a collision occurs. By using an unlocking mechanism, the connecting rod assembly is unlocked when a collision occurs, so that the seat can quickly return to its original position when a collision occurs in zero-gravity mode. When a collision occurs, the energy-absorbing structure can reduce the collision energy and reduce passenger injuries.

[0005] 2. Patents CN217074116U and CN217074119U disclose two zero-gravity seat quick-reset structures, which provide a crush groove on the connecting rod assembly and use the crush groove to unlock the connecting rod assembly when a collision occurs, so that the seat can quickly return to its original position when a collision occurs in zero-gravity mode.

[0006] The above patents have similar structures, all of which realize the rapid return of the seat when encountering a collision in zero gravity mode by unlocking the connecting rod assembly, and the difference lies in the different unlocking forms. However, if the connecting rod assembly is unlocked, an unlocking structure needs to be added, and the matching connection between the unlocking structure and the connecting rod assembly needs to be considered, which makes the structure here complicated and the installation and use are very limited by space. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a collapse structure and a seat with a collapse structure. By adding a collapse tube at the front end of the seat, when the seat collides in a zero-gravity position, it can collapse in the required direction and at a specific speed, thereby realizing the return of the human body posture and energy absorption, thereby reducing the collision energy and protecting the passengers. The overall structure is simple and does not take up extra space.

[0008] The utility model is realized through the following scheme: a collapse structure is used for a seat, a connecting rod assembly for adjusting the height and angle of the seat cushion is connected between the front end of the seat cushion and the base of the seat, the seat cushion includes a left side plate and a right side plate, the connecting rod assembly includes a left connecting rod and a right connecting rod respectively located on both sides of the seat cushion, the collapse structure includes a collapse tube connected between the left connecting rod and the right connecting rod or between the left side plate and the right side plate, the collapse tube is provided with a dent structure, and the dent structure is sufficient to cause the collapse tube to deform when the seat is impacted so as to absorb and buffer the impact force.

[0009] A further improvement of the collapse structure of the utility model is that the number of the depression structure is one and it is arranged in the middle of the collapse tube.

[0010] A further improvement of the collapse structure of the utility model is that the number of the depression structures is two and they are symmetrically distributed at two ends of the collapse tube.

[0011] A further improvement of the collapse structure of the utility model is that the number of the depression structures is three and they are evenly distributed on the collapse tube.

[0012] A further improvement of the collapse structure of the utility model is that the dent structure is in a flattened shape, and the depth of the dent is 1 / 3 to 1 / 2 of the diameter of the collapse tube.

[0013] A further improvement of the collapse structure of the utility model is that the depression structure is bowl-shaped, and the depression depth is 1 / 4 to 1 / 2 of the diameter of the collapse tube.

[0014] A further improvement of the collapse structure of the utility model is that the dent structure is a rectangular cutout, and the width and length of the rectangular cutout are respectively 1 / 2 to 3 / 4 and 3 / 4 to 3 / 2 of the diameter of the collapse tube.

[0015] A further improvement of the collapse structure of the utility model is that the left connecting rod and the right connecting rod both include an upper rod hinged to the seat cushion, a lower rod hinged to the base, and a hinge for hingedly connecting the upper rod and the lower rod, and the collapse tube is connected between the two upper rods, or between the two lower rods, or between the two hinges.

[0016] A further improvement of the collapse structure of the utility model is that the collapse tube is connected between the two hinged parts, the lower end of the upper rod and the upper end of the lower rod are both provided with hinge holes, the hinged parts include step screws and rotating shaft bushings arranged in the hinge holes, the step screws pass through the rotating shaft bushings and are inserted into the collapse tube.

[0017] A further improvement of the collapse structure of the utility model is that the lower end of the upper rod is formed into a double-ear structure, both ears are provided with the hinge holes, and both the left connecting rod and the right connecting rod include a support member sleeved on the collapse tube, and the support member is located between the two ears of the upper rod.

[0018] The utility model also provides a seat, which adopts the collapse structure as described in any one of the above items.

[0019] The utility model includes but is not limited to the following beneficial effects:

[0020] 1. By adding a crush tube at the front end of the seat, the seat can be crushed in the required direction and at a specific speed when a collision occurs in a zero-gravity position, thereby achieving the return of the human body posture and energy absorption.

[0021] 2. The structure is simple, and only a collapse connecting pipe needs to be added to the original seat frame.

[0022] 3. By collapsing the seat, people can be protected in zero gravity and the collision energy can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A comparative schematic diagram showing the seat being adjusted from the design position to the zero-pressure position.

[0024] Figure 2 A schematic diagram of the force analysis when the seat is hit in the zero-pressure position is shown.

[0025] Figure 3 The figure shows a comparison diagram of the seat frame deformation of a conventional seat in a zero-pressure position before and after a collision.

[0026] Figure 4 The schematic diagram of the combined structure of the utility model in which the collapse tube is installed between the left side plate and the right side plate is shown.

[0027] Figure 5 The schematic diagram of the combined structure of the utility model in which the collapse tube is installed between the upper rods of the left connecting rod and the right connecting rod is shown.

[0028] Figure 6 The schematic diagram of the combined structure of the utility model in which the collapse tube is installed between the lower rods of the left connecting rod and the right connecting rod is shown.

[0029] Figure 7 The schematic diagram of the combined structure of the utility model shows that the collapse tube is installed between the upper and lower rod hinges of the left connecting rod and the upper and lower rod hinges of the right connecting rod.

[0030] Figure 8 The schematic diagram of the exploded structure of the utility model shows that the collapse tube is installed between the upper and lower rod hinges of the left connecting rod and the upper and lower rod hinges of the right connecting rod.

[0031] Fig. 9 The utility model shows an assembly schematic diagram of the collapse tube and the upper and lower rod hinges of the left connecting rod.

[0032] Fig.10 The utility model shows a schematic diagram of a flattened depression structure on a collapse tube.

[0033] Fig.11 The schematic diagram of the bowl-shaped depression structure on the collapse tube of the utility model is shown.

[0034] Fig.12 The schematic diagram of the dimple structure with a rectangular cutout on the collapse tube of the utility model is shown.

[0035] Fig.13 A schematic diagram showing the distribution of different numbers of dimple structures on the collapse tube of the utility model is shown.

[0036] Fig.14 The diagram shows a comparison of the seat cushion change states before and after a collision at a zero-pressure position of a seat equipped with the collapse structure of the utility model. DETAILED DESCRIPTION

[0037] Because traditional zero-pressure seat collision safety measures are all achieved by unlocking the connecting rod assembly. Such measures require the addition of an unlocking structure, and the coordination and connection between the unlocking structure and the connecting rod assembly need to be considered, which makes the structure of the connecting rod assembly complicated, and the installation and use are very limited by space. In order to solve this problem, the utility model provides a collapse structure and a seat with a collapse structure. By adding a collapse tube to the front end of the seat, when the seat collides in a zero-gravity position, it can collapse in the required direction and at a specific speed, so as to realize the return of the human body posture and energy absorption, thereby reducing the collision energy and protecting passengers. The overall structure is simple and does not take up extra space. The collapse structure and the seat with a collapse structure are further explained below with specific embodiments and accompanying drawings.

[0038] See also Figure 1 , Figures 4 to 7As shown, a collapse structure is used for a seat, wherein a connecting rod assembly for adjusting the height and angle of the seat cushion 2 is connected between the front end of the seat cushion 2 and the base 1 of the seat, the seat cushion includes a left side plate 211 and a right side plate 212, the connecting rod assembly includes a left connecting rod 31 and a right connecting rod 32 respectively located on both sides of the seat cushion 2, the collapse structure includes a collapse tube 4 connected between the left connecting rod 31 and the right connecting rod 32 or between the left side plate 211 and the right side plate 212, the collapse tube 4 is provided with a dent structure 41, the dent structure 41 is required to cause the collapse tube 4 to deform when the seat is impacted so as to absorb and buffer the impact force.

[0039] Specifically, the crush tube 4 is a circular tube with openings at both ends, with a diameter of 20 to 30 mm, a thickness of 0.8 to 1.8 mm, and a material strength of 300 to 980 MPa. Located at the lower front side of the seat, the energy absorption effect of the crush tube 4 is adjusted by designing a dimple structure on the crush tube 4 and controlling the number and depth of the dimple structures, thereby obtaining the force required to trigger the collapse. In order to take into account the strength of the crush tube 4, the number and depth of the dimple structures should be controlled within an allowable range. In this embodiment, the preferred number of dimple structures is 1 to 3, and the depth is 1 / 4 to 1 / 2 times the diameter of the crush tube 4.

[0040] The distribution of different numbers of dimple structures is further described below through specific embodiments: Fig.13 , wherein, the collapse tube shown in FIG. A is provided with one dimpled structure 41, and the dimpled structure is located in the middle of the collapse tube; the collapse tube shown in FIG. B is provided with two dimpled structures 41, and the two dimpled structures 41 are symmetrically distributed at two ends of the collapse tube; the collapse tube shown in FIG. C is provided with three dimpled structures 41, and the three dimpled structures 41 are evenly distributed on the collapse tube 4.

[0041] The shape and depth of the dimple structure are further described below through specific embodiments: Fig.10 , Fig.10 The dimpled structure 41 shown is in a flattened shape and is generated by flattening a designated position of the collapse tube 4. The dimpled depth of the dimpled structure 41 is preferably 1 / 3 to 1 / 2 of the diameter of the collapse tube 4. Fig.11 , Fig.11 The dimple structure 41 shown is bowl-shaped, and the dimple depth of the dimple structure 41 is preferably 1 / 4 to 1 / 2 of the diameter of the collapse tube 4; Fig.12 , Fig.12 The dimple structure 41 shown is a rectangular cutout, and the width of the rectangular cutout is preferably 1 / 2 to 3 / 4 of the diameter of the collapse tube 4 , and the length of the rectangular cutout is preferably 3 / 4 to 3 / 2 of the diameter of the collapse tube 4 .

[0042] See also Figures 4 to 7As shown, the left connecting rod 31 includes a left upper rod 311, a left lower rod 312 and a hinge for hingedly connecting the left upper rod 311 and the left lower rod 312, and the right connecting rod 32 includes a right upper rod 321, a right lower rod 322 and a hinge for hingedly connecting the right upper rod 321 and the right lower rod 322. The upper ends of the left upper rod 311 and the right upper rod 321 are respectively hinged to the front of the left side plate 211 and the right side plate 212 of the seat cushion 2, and the lower ends of the left lower rod 312 and the right lower rod 322 are respectively hinged to the front end of the base 1. There are many ways to connect the collapse tube 4, which are described below through different embodiments:

[0043] Embodiment 1, as Figure 4 As shown, the collapse tube 4 is connected between the front ends of the left side plate 211 and the right side plate 212.

[0044] Embodiment 2, as Figure 5 As shown, the collapse tube 4 is connected between the left upper rod 311 and the right upper rod 321.

[0045] Embodiment 3, as Figure 6 As shown, the collapse tube 4 is connected between the left lower rod 321 and the right lower rod 322.

[0046] Embodiment 4, as Figure 7 As shown, the collapse tube 4 is connected between the two hinges.

[0047] In the above-mentioned embodiments 1 to 4, the connection form of the collapse tube 4 can be a rotating connection or a fixed connection (such as welding). For the rotating connection form, in order to simplify the assembly, it is preferred to adopt embodiment 4, that is, the collapse tube 4 is connected between two hinged parts. Figure 8 and Fig. 9 As shown, the lower ends of the left upper rod 311 and the right upper rod 321 are each provided with an upper hinge hole 52, and the upper ends of the left lower rod 312 and the right lower rod 322 are each provided with a lower hinge hole 53. The hinged parts on both sides have the same structure, and both include a step screw 51 and a rotating shaft bushing 54 arranged in the upper hinge hole 52 and the lower hinge hole 53 on the same side. The step screw 51 is passed through the rotating shaft bushing 54 on the corresponding side and inserted into the collapse tube 4 to achieve hinge connection.

[0048] Preferably, in order to improve the stability of the hinge, in this embodiment, the lower ends of the left upper rod 311 and the right upper rod 321 are formed into a double-ear structure, and the double ears are provided with an upper hinge hole 52. The hinge also includes a cylindrical plastic support 55 and a stopper 56 that can be sleeved on the collapse tube 4, and the number of the shaft bushings 54 is increased to two. Figure 7 and Fig. 9As shown, the support member 55 is supported and clamped between the two ears, and its two ports are respectively opposite to the two upper hinge holes 52 to improve the axial strength of the upper rod. The stopper 56 is also provided with an opening, and is correspondingly arranged between the upper hinge hole 52 on the side close to the collapse tube 4 and the collapse tube 4, and is rotatably connected through a rotating shaft bushing 54. The upper hinge hole 52 on the side away from the collapse tube 4 and the corresponding lower hinge hole 53 are rotatably connected through another rotating shaft bushing 54. Then, the step screw 51 is passed through the two rotating shaft bushings 54 and the support member 55 and inserted into the collapse tube 4 to achieve the connection of all parts, and the above connection should ensure that the left upper rod 311 and the left lower rod 312 can rotate relative to each other. The hinge of the right connecting rod 32 and the collapse tube 4 is the same as that of the left connecting rod 31, which will not be repeated here.

[0049] All the above examples are only preferred implementations and can be adjusted as needed in actual applications. The utility model controls the collapse speed and degree of the seat frame by setting a collapse tube between the left connecting rod and the right connecting rod or between the left side plate and the right side plate, thereby achieving protection against zero-pressure position collision. Fig.14 As shown, when the seat is hit at the zero-pressure position, the left connecting rod 31 and the right connecting rod 32 are deformed inward, thereby compressing the crush tube 4. Under the action of the pressure dimple structure, the crush tube 4 collapses to absorb energy. Since the collision energy is limited, the deformation of the left connecting rod 31 and the right connecting rod 32 can be reduced (by about 20 to 30 mm) under the energy absorption effect of the crush tube 4, thereby ensuring that the overall structure of the seat is not damaged.

[0050] The collapse structure of the utility model is mainly used for seats, especially zero-pressure seats. The safety of the zero-pressure seats is ensured by the collapse structure. Furthermore, the seat provided with the collapse structure is installed on a vehicle, thereby ensuring the safety of the vehicle.

[0051] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A collapse structure for a seat, wherein a connecting rod assembly for adjusting the height and angle of the seat cushion is connected between the front end of the seat cushion and the base, the seat cushion comprises a left side plate and a right side plate, and the connecting rod assembly comprises a left connecting rod and a right connecting rod respectively located on both sides of the seat cushion, characterized in that: The collapse structure includes a collapse tube connected between the left connecting rod and the right connecting rod or between the left side plate and the right side plate, and the collapse tube is provided with a dimple structure, which can cause the collapse tube to deform when the seat is impacted so as to absorb and buffer the impact force.

2. The collapse structure according to claim 1, characterized in that: The number of the dimple structure is one, and the dimple structure is arranged in the middle of the collapse tube.

3. The collapse structure according to claim 1, characterized in that: The number of the dimple structures is two and they are symmetrically distributed at two ends of the collapse tube.

4. The collapse structure according to claim 1, characterized in that: The number of the dimple structures is three and they are evenly distributed on the collapse tube.

5. The collapse structure according to claim 1, characterized in that: The dimple structure is in a flattened shape, and the depth of the dimple is 1 / 3 to 1 / 2 of the diameter of the collapse tube.

6. The collapse structure according to claim 1, characterized in that: The dimple structure is bowl-shaped, and the depth of the dimple is 1 / 4 to 1 / 2 of the diameter of the collapse tube.

7. The collapse structure according to claim 1, characterized in that: The dimple structure is a rectangular cutout, and the width and length of the rectangular cutout are 1 / 2 to 3 / 4 and 3 / 4 to 3 / 2 of the diameter of the collapse tube, respectively.

8. The collapse structure according to claim 1, characterized in that: The left connecting rod and the right connecting rod each include an upper rod hinged to the seat cushion, a lower rod hinged to the base, and a hinge for hingedly connecting the upper rod and the lower rod, and the collapse tube is connected between the two upper rods, or between the two lower rods, or between the two hinges.

9. The collapse structure according to claim 8, characterized in that: The collapse tube is connected between the two hinged parts, and hinge holes are provided at the lower end of the upper rod and the upper end of the lower rod. The hinged part includes a step screw and a rotating shaft bushing arranged in the hinge hole. The step screw passes through the rotating shaft bushing and is inserted into the collapse tube.

10. The collapse structure according to claim 9, characterized in that: The lower end of the upper rod is formed into a double-ear structure, and the double ears are both provided with the hinge holes. The left connecting rod and the right connecting rod both include a support member sleeved on the collapse tube, and the support member is located between the double ears of the upper rod.

11. A seat, characterized in that: A collapse structure as described in any one of claims 1 to 10 is adopted.

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