A shock-absorbing and impact-resistant seat based on a double-slider mechanism

Abstract

The present invention provides a shock-absorbing and impact-resistant seat based on a double-slider mechanism. The shock-absorbing and impact-resistant seat includes a backrest slide rail structure, a backrest slider, a backrest load-bearing structure, a lock, a buffer and reset device, a vibration buffer, a seat cushion load-bearing structure, a seat cushion slider, a seat cushion slide rail structure, a seat cushion, a linkage rod, a seat belt, a backrest pad and a vertical guiding structure; when the vehicle encounters an impact load, the lock is overloaded and opened, and the two slider structures installed on the backrest and the seat cushion together with the linkage rod form a double-slider motion mechanism, so that while the backrest pad moves downward in a buffered manner, it drives the seat cushion to generate a lateral associated motion, changing the buffered motion trajectory of the seat and improving the support of the seat for the waist and back of the occupant, thereby reducing human body injuries; the present invention makes full use of the space in the vertical and horizontal directions inside the vehicle for shock absorption and vibration reduction, and changes the load transfer path during the impact process, thereby improving the protection efficiency of the seat for the occupant under the impact load.

Description

Technical Field

[0001] The present invention relates to the field of special vehicle parts, and particularly to a seat with shock absorption and anti - impact buffering functions. Background Art

[0002] For special vehicles such as armored vehicles and riot vehicles, the driving ground environment is very complex. They not only need to drive at high speeds on ordinary roads and off - road surfaces, but also may face threats from explosives such as landmines. As a result, the vehicle occupants need to bear very harsh vibration and impact loads, which seriously affect the riding comfort of the passengers and the equipment operation efficiency. Research shows that relying solely on the suspension shock - absorption system is difficult to meet the requirements of special vehicle occupants for shock absorption and anti - impact performance. Therefore, based on the research of load characteristics and vehicle suspension systems, special vehicle researchers have further carried out research on crew seats with shock - absorption and anti - impact functions.

[0003] Researchers have proposed some shock - absorption and anti - impact seat solutions by analyzing the characteristics of vibration and impact loads of special vehicles, such as CN110303955B, CN113060057A, etc. These new seats have realized functions such as stepless adjustment of seat height, shock absorption, and impact buffering, reducing the vibration and impact of external loads on vehicle occupants and improving the riding comfort of the seats and the equipment operation efficiency of the occupants. However, the shock - absorption and anti - impact buffering movement trajectories of these seats are mostly relatively single, and their buffering strokes basically utilize the space in the vertical direction inside the vehicle. At the same time, the internal space of special vehicles is limited, especially in the vertical direction due to the limitation of the vehicle body height, which restricts the buffering distance of existing shock - absorption seats and restricts the anti - impact performance of the seats. In addition, existing shock - absorption seats mainly rely on the seat cushion to bear the load. The impact load is buffered by shock - absorption components and then transmitted to the seat cushion, and then transmitted to the head through the pelvis - lumbar spine - spine - cervical vertebra, forming a series - connected human load transfer chain. In this series - connected human load transfer chain, the pelvis and lumbar spine bear the largest loads and are relatively prone to "compression injuries"; at the same time, since the head is at the farthest end of the series - connected load transfer chain, it is relatively prone to "whiplash injuries".

[0004] Therefore, it is necessary to propose a new seat with shock absorption and anti - impact buffering functions to solve the problems of insufficient space utilization of existing shock - absorption seats in the above - mentioned technical problems, and the relatively single path of shock absorption and anti - impact buffering. Moreover, the design of the load transfer chain is not reasonable enough, which restricts the protection effect on the occupants under impact loads. Summary of the Invention

[0005] The present invention provides a vibration damping and shock resistant seat based on a double-slider mechanism, which can solve the problems that the existing vibration damping seats are not fully utilized in terms of space, the vibration damping and shock resistant buffering paths are relatively single, and the design of the load transfer chain is not reasonable enough, restricting the protection efficiency of the passengers under impact loads.

[0006] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0007] The present invention provides a vibration damping and shock resistant seat based on a double-slider mechanism. The vibration damping and shock resistant seat includes a seat cushion, a backrest, a seat cushion bearing structure located below the seat cushion, a backrest bearing structure located behind the backrest, a vertical guiding structure, a vibration buffer, and a double-slider mechanism;

[0008] The double-slider mechanism includes a backrest slide rail structure located behind the backrest, a backrest slider movably arranged on the backrest slide rail structure, a seat cushion slide rail structure located below the seat cushion, a seat cushion slider movably arranged on the seat cushion slide rail structure, and a linkage rod located between the backrest slider and the seat cushion slider;

[0009] Wherein, a lock is arranged at the connection of the backrest slider, the linkage rod and the backrest bearing structure. One end of the backrest bearing structure is connected to the backrest slide rail structure through the backrest slider, and the other end is connected to the vehicle body through the vertical guiding structure and the vibration buffer.

[0010] According to an optional embodiment of the present invention, the vibration damping and shock resistant seat further includes a buffer reset device, which is arranged on the side of the vertical guiding structure away from the backrest slide rail structure, and is used to quickly reset the vibration buffer.

[0011] According to an optional embodiment of the present invention, a first guiding mechanism is arranged on the backrest slide rail structure. The backrest slider is connected to the backrest slide rail structure through the first guiding mechanism, and the backrest slider is respectively connected to the backrest bearing structure and the linkage rod through hinges.

[0012] According to an optional embodiment of the present invention, a second guiding mechanism is arranged on the seat cushion slide rail structure. The seat cushion slider is connected to the seat cushion slide rail structure through the second guiding mechanism, and the seat cushion slider is respectively connected to the seat cushion bearing structure and the linkage rod through hinges.

[0013] According to an optional embodiment of the present invention, the first guiding mechanism and the second guiding mechanism are chutes or guide rails.

[0014] According to an optional embodiment of the present invention, the seat cushion slide rail structure is connected to the backrest slide rail structure through a hinge and / or a flexible belt.

[0015] According to an optional embodiment of the present invention, the seat cushion bearing structure and the backrest bearing structure are connected via a movable hinge.

[0016] According to an optional embodiment of the present invention, a four-point safety belt is also installed on the vibration-damping and impact-resistant seat, the rear two points of the four-point safety belt are installed on the backrest bearing structure, and the front two points are installed on the seat cushion bearing structure.

[0017] Beneficial effects of the present invention: The embodiment of the present invention provides a vibration-damping and impact-resistant seat based on a double slider mechanism, which includes a backrest slide rail structure, a backrest slider, a backrest bearing structure, a lock, a buffer resetter, a vibration buffer, a cushion bearing structure, a cushion slider, a cushion slide rail structure, a cushion, a linkage rod, a safety belt, a back cushion and a vertical guide structure; when the vehicle is driving normally, the lock locks the backrest slide rail structure, the slider structure and the backrest bearing structure together to form a whole, and relies on the vibration buffer to achieve buffering and vibration reduction under normal driving conditions; when the vehicle encounters an impact load, the lock is overloaded and opened, and the two slider structures installed on the backrest and the cushion together with the linkage rod constitute a double slider motion mechanism, so that the back cushion moves downward while driving the cushion to produce a lateral associated movement, changing the cushioning movement trajectory of the seat, and improving the seat's support for the waist and back of the passenger, thereby reducing human body damage. The present invention makes full use of the space in the vertical and horizontal directions inside the vehicle for buffering and vibration reduction, and changes the load transfer path of the impact process, thereby improving the seat's protection efficiency for the passenger under the impact load. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a vibration-damping and impact-resistant seat based on a double slider mechanism provided in an embodiment of the present application.

[0020] Figure 2 A schematic structural diagram of a threshold lock in a vibration-damping and impact-resistant seat based on a double slider mechanism provided in an embodiment of the present application.

[0021] Figure 3 A schematic diagram of the operation principle of a dual slider mechanism of a vibration-damping and impact-resistant seat based on a dual slider mechanism provided in an embodiment of the present application.

[0022] Figure 4A schematic diagram of the forward / rearward movement trajectory of a vibration-damping and impact-resistant seat based on a double slider mechanism that senses a strong impact force provided in an embodiment of the present application.

[0023] Figure 5 A schematic diagram of the initial position of a vibration-damping and impact-resistant seat based on a double slider mechanism provided in an embodiment of the present application.

[0024] Figure 6 A schematic diagram of the position of a vibration-damping and impact-resistant seat based on a double slider mechanism after impact resistance provided in an embodiment of the present application.

[0025] Figure numerals: backrest slide rail structure 1, backrest slider 2, backrest bearing structure 3, lock 4, buffer resetter 5, vibration buffer 6, seat cushion bearing structure 7, seat cushion slider 8, seat cushion slide rail structure 9, seat cushion 10, linkage rod 11, safety belt 12, back cushion 13, vehicle body 14 and vertical guide structure 15. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0027] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In the present application, " / " means "or". In the figures, units with similar structures are represented by the same reference numerals, and the dotted lines in the figures represent those that do not exist in the structure, which only illustrate the shape and position of the structure. The present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] The existing vibration-damping seats do not fully utilize space, have a relatively single path for vibration reduction and impact buffering, and are not reasonably designed in the load transfer chain, which limits their ability to protect passengers under impact loads. The embodiments of the present invention can solve the above problems.

[0029] For this reason, Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a structural schematic diagram of a vibration-damping and impact-resistant seat based on a double slider mechanism, wherein the vibration-damping and impact-resistant seat comprises a seat cushion 10, a back cushion 13, a seat cushion bearing structure 7 located below the seat cushion 10, a backrest bearing structure 3 located behind the back cushion 13, a vertical guide structure 15, a vibration buffer 6 and a double slider mechanism; the double slider mechanism comprises a backrest slide rail structure 1 located behind the back cushion 13, a backrest slider 2 movably arranged on the backrest slide rail structure 1, a seat cushion slide rail structure 9 located below the seat cushion 10, a seat cushion slider 8 movably arranged on the seat cushion slide rail structure 9, and a linkage rod 11 located between the backrest slider 2 and the seat cushion slider 8; wherein a lock buckle 4 is provided at the connection between the backrest slider 2 and the linkage rod 11 and the backrest bearing structure 3, one end of the backrest bearing structure 3 is connected to the backrest slide rail structure 1 through the backrest slider 2, and the other end is connected to the vehicle body through the vertical guide structure 15 and the vibration buffer 6.

[0030] The present invention uses a double slider mechanism to expand the cushioning movement of the seat in the vertical direction to both the vertical and horizontal directions, making full use of the limited space in the vehicle, increasing the impact cushioning stroke, and improving the impact resistance of the seat; the present invention uses a linkage rod to link the vertical movement with the horizontal movement, thereby improving the support of the seat for the part above the waist and back of the human body, changing the transmission path of the impact load, and reducing damage to the human body; the present invention uses a lock and a reset device in coordination, so that the seat meets the dual requirements of vibration reduction and impact resistance at the same time, and can be reset and reused, reducing secondary impact damage.

[0031] Specifically, Figure 1 Combination Figure 2 The vibration-damping and impact-resistant seat comprises a backrest slide rail structure 1, a backrest slider 2, a backrest bearing structure 3, a lock 4, a buffer resetter 5, a vibration buffer 6, a cushion bearing structure 7, a cushion slider 8, a cushion slide rail structure 9, a cushion 10, a linkage rod 11, a safety belt 12, a back cushion 13 and a vertical guide structure 15. The vibration-damping and impact-resistant seat is fixed on a vehicle body 14.

[0032] like Figure 3As shown, the double slider mechanism includes a backrest slide rail structure 1 located behind the back cushion 13, a backrest slider 2 movably arranged on the backrest slide rail structure 1, a cushion slide rail structure 9 located below the seat cushion 10, a cushion slider 8 movably arranged on the cushion slide rail structure 9, and a linkage rod 11 located between the backrest slider 2 and the cushion slider 8; a first guide mechanism is arranged on the backrest slide rail structure 1, and a second guide mechanism is arranged on the cushion slide rail structure 9. The backrest slider 2 moves downward along the first guide mechanism on the backrest slide rail structure 1, and the backrest slider 2 will drive the cushion slider 8 to move through the linkage rod 11, and the cushion slider 8 moves on the second guide mechanism on the cushion slide rail structure 9.

[0033] like Figure 1 As shown, the backrest bearing structure 3 is connected to the vehicle body 14 through the backrest slide rail structure 1, the backrest slider 2 and the vibration buffer 6. One end of the backrest bearing structure 3 is connected to the backrest slide rail structure 1 through the backrest slider 2, and the other end is connected to the vehicle body through the vertical guide structure 15 and the vibration buffer 6. In detail, the other end of the backrest bearing structure 3 is sleeved on the vertical guide structure 15, and the vertical guide structure 15 is connected to the vehicle body 14 through a hinge. One end of the vibration buffer 6 is also sleeved on the vertical guide structure 15, and the other end of the vibration buffer 6 is connected to the seat cushion slide rail structure 9 through a hinge. The vertical guide structure 15 in this embodiment is a cylinder.

[0034] The seat slide rail structure 9 is connected to the backrest slide rail structure 1 through a hinge and / or a flexible belt. The seat slide rail structure 9 in this embodiment is connected to the backrest slide rail structure 1 through a hinge and can be folded and unfolded; the seat slide rail structure 9 and the backrest slide rail structure 1 are connected by a flexible belt on the basis of the hinge connection to facilitate folding and unfolding. After the seat slide rail structure 9 and the backrest slide rail structure 1 are unfolded, the flexible belt is used to maintain the relative position, forming two sliding rails of the double slider mechanism.

[0035] The backrest slide rail structure 1 is provided with a first guide mechanism, the backrest slider 2 is connected to the backrest slide rail structure 1 through the first guide mechanism, and the backrest slider 2 is connected to the backrest bearing structure 3 and the linkage rod 11 through hinges. The seat cushion slide rail structure 9 is provided with a second guide mechanism, the seat cushion slider 8 is connected to the seat cushion slide rail structure 9 through the second guide mechanism, and the seat cushion slider 8 is connected to the seat cushion bearing structure 7 and the linkage rod 11 through hinges. The first guide mechanism and the second guide mechanism are preferably guide rails, and the first guide mechanism and the second guide mechanism in other embodiments may also be slide grooves.

[0036] When a passenger sits on the seat, the passenger's gravity acts on the cushion bearing structure 7. The seat is fixed with a safety belt 12. The safety belt 12 is bound to the backrest bearing structure 3 and the cushion bearing structure 7, and the human body is completely bound to the seat, so that the whole person will not be separated from the seat due to impact. The cushion bearing structure 7 is connected to the backrest bearing structure 3 through a movable hinge, and can be folded up when the seat is not in use.

[0037] like Figure 2 As shown, there is a lock 4 at the connection between the backrest slider 2, the linkage rod 11 and the backrest bearing structure 3. When the vibration impact does not reach the threshold, the lock 4 will be fixed to the backrest bearing structure 3 and the backrest slider 2, and the driving environment of the occupants will be guaranteed through the buffering effect of the vibration buffer. However, military vehicles often pass through some complex sections, and the vehicle body 14 will be subjected to a large impact force, so the vibration buffer 6 and the double slider structure are required to play a dual vibration reduction and buffering role, and the vibration buffer 6 is quickly restored under the action of the buffer resetter 5, so that the vibration buffer 6 can quickly respond to the next impact.

[0038] The lock buckle 4 with a threshold value plays a great role in the impact resistance of the seat. When the seat is subjected to an impact that does not reach a predetermined threshold value, the seat back slider 2 will be fixed to the side panels on both sides of the back support structure 3 by the lock buckle 4 and will not be easily disconnected. At this time, the seat only achieves the effect of vibration reduction and buffering through the action of the vibration buffer 6, thereby improving the riding comfort of the driver and passengers.

[0039] When the seat needs to be folded, the lock 4 can be released, and the seat cushion bearing structure 7 can rotate to drive the backrest slider 2 to slide downward along the backrest bearing structure 3, and the backrest slider 2 moves upward, and the seat cushion 10 and the back cushion 13 move towards a close trend, thereby achieving a contraction effect and saving space in the vehicle when the seat is not needed.

[0040] exist Figure 4 In the figure, line S1 represents the schematic diagram of the movement state of the double slider mechanism after the seat feels a strong impact force, line S2 represents the schematic diagram of the movement state of the double slider mechanism before the seat feels a strong impact force, and line S2 represents the schematic diagram of the movement trajectory of the cushion slider 8 before the seat feels a strong impact force. Figure 5 A schematic diagram of the initial position of a seat provided in an embodiment of the present application. Figure 6 A schematic diagram of the position of a seat after impact resistance provided in an embodiment of the present application.

[0041] like Figures 4 to 6As shown, when the vehicle encounters a strong impact force on a bad road, which exceeds the threshold of the lock buckle 4, the backrest slider 2 in the seat will be subjected to a strong impact force, and the fixed lock buckle 4 at the connecting rod connected to the backrest bearing structure 3 will start to operate. When the explosion impact is transmitted to the seat, the fixed lock buckle 4 will be squeezed open or broken. At this time, the backrest slider 2 in the double slider mechanism moves downward along the first guide mechanism on the backrest slide rail structure 1, which will drive the backrest bearing structure 3 to move downward. When the backrest bearing structure 3 sinks, the backrest slider 2 will drive the seat cushion slider 8 to move through the linkage rod 11, and the seat cushion slider 8 moves on the second guide mechanism on the seat cushion slide rail structure 9, that is, the backrest slider 2 drives the seat cushion 10 to move forward, so that the back cushion moves downward while driving the seat cushion to produce a lateral associated movement, thereby changing the seat's buffering movement trajectory, increasing the seat's buffering distance, and improving the seat's support for the occupant's waist and back, thereby reducing human body injuries.

[0042] At the same time, the acceleration to which the human body is subjected is relatively reduced, and the connecting rod mechanism drives the seat, and the backrest bearing structure 3 will generate a damping force with the support during the curved movement, thereby reducing the explosion impact force for the occupants. Then the buffer resetter 5 in the shock absorber quickly resets the vibration buffer 6 to prevent the next impact. In addition, the seat provides effective support to the occupant's back during the buffering movement, effectively reducing damage to the waist and pelvis, thereby reducing the damage to the occupant during the explosion. There will also be lateral support at the head position, and there will be a longer impact resistance stroke, effectively avoiding more impacts. When impacted, the upper connecting rod in the vibration buffer 6 will be pressed downward, and the piston will be pressed downward. The oil in the oil cylinder will be pressed into the upper connecting rod in the shock absorber, and the vibration buffer 6 will generate a buffering force to resist the first buffering of the seat to the impact force.

[0043] When the entire seat is impacted, it will automatically press down. When it reaches a peak value, the lock 4 between the backrest slider 2 and the backrest bearing structure 3 will loosen or fall off. The seat will not only move downward, but also move forward under the motion of the rotational pair between the seat cushion bearing structure 7 and the backrest slider 2 and the linkage rod 11, which drives the seat cushion bearing structure 7 and the backrest bearing structure 3. When buffering the impact force, it not only increases the distance, but also reduces the instantaneous acceleration of the human body by dispersing the acceleration. More effectively, it makes the seat produce a curved motion, and will also provide corresponding support to the occupants during the motion. The corresponding cervical vertebrae will also have correspondingly extra buffering distance, and head injuries will also be protected. The double slider mechanism produces a second buffer, which more effectively guarantees the safety of the occupants.

[0044] The safety belt 12 in this embodiment is a four-point fastening safety belt, which can effectively prevent the occupant from shaking and plays a good protective measure. The four-point safety belt 12 is installed on the seat, the rear two points of the four-point safety belt 12 are installed on the backrest bearing structure 3, and the front two points are installed on the seat cushion bearing structure 7. The four-point safety belt fixes the occupant on the seat cushion 10 and the backrest 13 to ensure that the occupant's body moves according to the track of the double slider mechanism during the impact buffering process.

[0045] As described above, the vibration-damping and impact-resistant seat in this embodiment can buffer huge impacts through the vibration buffer 6, safety belt 12, backrest slider 2, seat cushion slider 8 and linkage rod 11, and the buffer resetter 5 returns to its position quickly to ensure the safety and reliability of the seat.

[0046] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A shock-absorbing and impact-resistant seat based on a double-slider mechanism, characterized in that, the shock-absorbing and impact-resistant seat includes a seat cushion, a backrest, a seat cushion bearing structure located below the seat cushion, a backrest bearing structure located behind the backrest, a vertical guiding structure, a vibration buffer, and a double-slider mechanism; the double-slider mechanism includes a backrest slide rail structure located behind the backrest, a backrest slider movably arranged on the backrest slide rail structure, a seat cushion slide rail structure located below the seat cushion, a seat cushion slider movably arranged on the seat cushion slide rail structure, and a linkage rod located between the backrest slider and the seat cushion slider; wherein, a lock is provided at the connection of the backrest slider, the linkage rod, and the backrest bearing structure. One end of the backrest bearing structure is connected to the backrest slide rail structure through the backrest slider, and the other end is connected to the vehicle body through the vertical guiding structure and the vibration buffer; a first guiding mechanism is provided on the backrest slide rail structure. The backrest slider is connected to the backrest slide rail structure through the first guiding mechanism, and the backrest slider is respectively connected to the backrest bearing structure and the linkage rod through hinges; a second guiding mechanism is provided on the seat cushion slide rail structure. The seat cushion slider is connected to the seat cushion slide rail structure through the second guiding mechanism, and the seat cushion slider is respectively connected to the seat cushion bearing structure and the linkage rod through hinges.

2. The shock-absorbing and impact-resistant seat based on a double-slider mechanism according to claim 1, characterized in that, the shock-absorbing and impact-resistant seat further includes a buffer reset device, and the buffer reset device is arranged on the side of the vertical guiding structure away from the backrest slide rail structure, and the buffer reset device is used to quickly reset the vibration buffer.

3. The shock-absorbing and impact-resistant seat based on a double-slider mechanism according to claim 1, characterized in that, the first guiding mechanism and the second guiding mechanism are chutes or guide rails.

4. The shock-absorbing and impact-resistant seat based on a double-slider mechanism according to claim 1, characterized in that, the seat cushion slide rail structure is connected to the backrest slide rail structure through a hinge and / or a flexible belt.

5. The shock-absorbing and impact-resistant seat based on a double-slider mechanism according to claim 1, characterized in that, the seat cushion bearing structure is connected to the backrest bearing structure through a movable hinge.

6. The shock-absorbing and impact-resistant seat based on a double-slider mechanism according to claim 1, characterized in that, a four-point seat belt is further installed on the shock-absorbing and impact-resistant seat. The rear two points of the four-point seat belt are installed on the backrest bearing structure, and the front two points are installed on the seat cushion bearing structure.

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