A type of shock-absorbing seat for special vehicles

Abstract

This utility model discloses a vibration-damping seat for special vehicles, including a vibration-damping component disposed between the seat body and a fixed support. Seat slides are fixedly mounted on both sides of the bottom of the seat body, and seat rails are slidably nested at the bottom of each seat slide. The fixed support is located below the seat body, and a fixed bracket is connected to the top of the fixed support. Limiting ring covers are provided on both sides of the fixed bracket at positions corresponding to the seat rails. The vibration-damping component includes an elastic buffer column fixedly mounted inside the limiting ring cover. A friction damping rod is slidably mounted inside the hole of the elastic buffer column. The top of the friction damping rod is fixedly connected to the seat rail. A spring cover is fixedly mounted on the upper end of the friction damping rod, and a vibration-damping spring is sleeved between the spring cover and the elastic buffer column. The lower end of the friction damping rod passes through the limiting ring cover and the fixed bracket. This utility model has advantages such as good seat cushioning and vibration damping effect, stable and reliable cushioning and vibration damping operation, and adjustable cushioning damping force.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping seat technology, specifically a vibration damping seat for special vehicles. Background Technology

[0002] During vehicle operation, uneven road surfaces, emergency maneuvers, or braking can cause multi-dimensional vibrations in the vehicle's interior environment, affecting not only passenger comfort but also, in severe cases, threatening their health and safety. Patent publication number CN210554340U discloses a novel automotive seat shock absorption device, specifically featuring two springs connecting the car seat to its inner frame. These springs are located on either side of a damping adjustment box. A threaded hole is located on the front of the damping adjustment box, with a hand-tightening bolt embedded inside. A spring sleeve is installed at the end of the hand-tightening bolt, and a spring positioning post is fixed inside the spring sleeve. A second spring is embedded outside the spring positioning post, with a spring column connected to the right end of the second spring. A friction plate is connected to the right end of the spring column, and the friction plate abuts against a frosted plate. However, this device suffers from problems such as low integration of the shock absorption structure, complex structure, large space occupation, and poor seat cushioning and shock absorption effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a shock-absorbing seat for special vehicles. The shock-absorbing components are highly integrated, simple in structure, occupy little space, are easy to disassemble and assemble, have good cushioning and shock absorption effect, stable and reliable cushioning and shock absorption operation, and adjustable cushioning damping force, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vibration-damping seat for special vehicles, comprising a vibration-damping component disposed between a seat body and a fixed support. Seat slides are fixedly disposed on both sides of the bottom end of the seat body, and seat slide rails are slidably nested at the bottom of each seat slide. The fixed support is located below the seat body, and a fixed bracket is connected to the top of the fixed support. Limiting ring covers are provided on both sides of the fixed bracket at positions corresponding to the seat slide rails. The vibration-damping component includes an elastic buffer column fixedly disposed within the limiting ring cover. The elastic buffer column has a hollow structure, and a friction damping rod is slidably disposed within the hole of the elastic buffer column. The top end of the friction damping rod is fixedly connected to the seat slide rail. A spring cover is fixedly disposed at the upper end of the friction damping rod, and a vibration-damping spring is sleeved on the friction damping rod between the spring cover and the elastic buffer column. The lower end of the friction damping rod passes through the limiting ring cover and the fixed support. A buffer block is fixedly disposed at the end of the friction damping rod, and the buffer block is in contact with the end of the fixed support when the friction damping rod rebounds and resets.

[0005] Furthermore, the seat slide rail is a U-shaped slide rail, and the seat slide plate is an inverted U-shaped slide plate that is slidably connected to the outer wall of the seat slide rail; the top end of the friction damping rod extends into the seat slide rail, and the top end of the friction damping rod is threaded with a locking nut; the upper end of the friction damping rod is provided with an outwardly protruding shoulder, the inner bottom end of the spring cover is attached to the outwardly protruding shoulder, and the top wall of the spring cover is attached to the bottom surface of the seat slide rail.

[0006] Furthermore, the lower end of the friction damping rod is provided with a concave shoulder, and a limiting ring is sleeved on the step surface of the concave shoulder on the friction damping rod. A locking nut is threaded to the end of the friction damping rod. The buffer block is slidably sleeved on the friction damping rod, and the bottom surface of the buffer block abuts against the limiting ring.

[0007] Furthermore, the elastic buffer column is a hollow stepped shaft structure with a small outer diameter at the upper end and a large outer diameter at the lower end, and the outer diameter at the upper end of the elastic buffer column is adapted to the inner diameter of the damping spring, with the end of the damping spring abutting against the stepped surface of the elastic buffer column.

[0008] Furthermore, the bottom end of the elastic buffer column is provided with a damping hole coaxially arranged with it. The diameter of the damping hole is larger than the outer diameter of the friction damping rod. A damping piston is fixedly provided on the part of the friction damping rod located at the damping hole. The top surface of the damping piston is provided with arc-shaped micro-slit vent holes at equal intervals along its circumference.

[0009] Furthermore, a damping ring is provided on the friction damping rod at the lower end of the corresponding damping piston. The damping ring has a second micro-slit vent hole that matches the structure and number of the first micro-slit vent hole. The amount of air passage when the damping piston slides can be adjusted by adjusting the overlap between the first and second micro-slit vent holes. The upper end face of the damping piston has multiple first connecting holes along its circumference. The lower end face of the damping ring has a second connecting hole at the position corresponding to the first connecting hole. The damping ring is fixedly connected to the lower end face of the damping piston by connecting screws passing through the second connecting hole and the first connecting hole.

[0010] Furthermore, the damping orifice has a spline hole structure, and the damping piston has a spline tube structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This special vehicle vibration-damping seat uses a vibration-damping spring to buffer and dampen the up-and-down swaying of the seat body. Simultaneously, the friction damping rod and the elastic buffer column slide relative to each other, generating friction damping and improving the buffering effect. After the vibration-damping assembly has buffered the seat body, the friction damping generated between the friction damping rod and the elastic buffer column reduces the impact force generated by the release of elastic potential energy by the vibration-damping spring, providing buffering and damping when the seat body returns to its original position. A damping piston is added to the friction damping rod, and air damping is generated when the friction damping rod slides relative to the elastic buffer column through a micro-slit vent hole on the damping piston. The air damping can be adjusted by the damping ring plate, further increasing the buffering effect of the vibration-damping assembly. The vibration-damping assembly has a high degree of integration, simple structure, small space occupation, and convenient disassembly and assembly. The seat has good buffering and vibration damping effect, stable and reliable buffering and vibration damping operation, and adjustable buffering damping force. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a side view of the vibration-damping seat of this utility model;

[0014] Figure 3 This is an isometric drawing of the vibration damping component of this utility model;

[0015] Figure 4 This is an isometric drawing of the friction damping rod of this utility model;

[0016] Figure 5 This is a cross-sectional view of the vibration damping component according to the first embodiment of the present invention;

[0017] Figure 6 This is a cross-sectional view of the vibration damping component according to the second embodiment of this utility model;

[0018] Figure 7 for Figure 6 Enlarged view of a specific area;

[0019] Figure 8 This is a top view of the damping piston according to the second embodiment of the present invention;

[0020] Figure 9 This is a top view of the damping ring plate according to the second embodiment of this utility model.

[0021] In the diagram: 1. Seat body; 2. Seat slide plate; 3. Seat slide rail; 4. Vibration damping assembly; 41. Elastic buffer column; 411. Damping hole; 42. Friction damping rod; 421. Outwardly protruding shoulder; 422. Concave shoulder; 43. Spring cover; 44. Vibration damping spring; 45. Damping piston; 451. Micro-slit vent hole one; 452. Connecting hole one; 46. Damping ring plate; 461. Micro-slit vent hole two; 462. Connecting hole two; 47. Buffer block; 48. Locking nut one; 49. Limiting ring plate; 410. Locking nut two; 5. Fixed bracket; 51. Limiting ring cover; 6. Fixed support; 7. Dustproof cloth cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see Figure 1-3This utility model provides a technical solution: a vibration-damping seat for special vehicles, including a vibration-damping component 4 disposed between a seat body 1 and a fixed support 6. Seat slide plates 2 are fixedly disposed on both sides of the bottom end of the seat body 1, and seat slide rails 3 are slidably nested at the bottom of each seat slide plate 2. The fixed support 6 is located below the seat body 1, and a fixed bracket 5 is connected to the top of the fixed support 6. Limiting ring covers 51 are provided on both sides of the fixed bracket 5 at positions corresponding to the seat slide rails 3. In this embodiment, limiting ring covers 51 are provided on both sides of the fixed bracket 5 at positions corresponding to the two ends of the seat slide rails 3, i.e., four limiting ring covers 51 are provided on the fixed bracket 5. Furthermore, the number of vibration-damping components 4 in this embodiment is four. The vibration-damping component 4 includes an elastic buffer column 41 fixedly disposed within the limiting ring cover 51. In this embodiment, the elastic buffer column 41 is a polyurethane elastic column, and the elastic buffer column 41 is a medium-density polyethylene (HDPE) elastic column. The structure is hollow. A friction damping rod 42 is slidably installed inside the hole of the elastic buffer column 41. The top end of the friction damping rod 42 is fixedly connected to the seat slide rail 3. A spring cover 43 is fixedly installed on the upper end of the friction damping rod 42. A damping spring 44 is sleeved on the friction damping rod 42 between the spring cover 43 and the elastic buffer column 41. The elastic buffer column 41 is a hollow stepped shaft structure with a small outer diameter at the upper end and a large outer diameter at the lower end. The outer diameter of the upper end of the elastic buffer column 41 is adapted to the inner diameter of the damping spring 44. The end of the damping spring 44 abuts against the stepped surface of the elastic buffer column 41. The lower end of the friction damping rod 42 passes through the limiting ring cover 51 and the fixing bracket 5. A buffer block 47 is fixedly installed at the end of the friction damping rod 42. When the friction damping rod 42 rebounds and resets, the buffer block 47 fits against the end of the fixing bracket 5. In this embodiment, a dust cover 7 is also provided between the seat slide rail 3 and the fixing bracket 5.

[0024] In use: When the vehicle experiences bumps during travel, the seat body 1 sways up and down. The seat slide plate 2 and seat rail 3 connected to the seat body 1 move closer to the fixed bracket 5 fixed to the fixed support 6. The spring cover 43 and the elastic buffer column 41 move closer to each other, compressing the damping spring 44. The damping spring 44 cushions and dampens the up and down swaying of the seat body 1. At the same time, the friction damping rod 42 slides relative to the elastic buffer column 41, and the friction damping generated between the friction damping rod 42 and the elastic buffer column 41 further enhances the damping of the seat body. 1. Buffering and damping effect for up-and-down swaying; After the damping component 4 has buffered the seat body 1, the damping spring 44 generates elastic potential energy to make the spring cover 43 and the elastic buffer column 41 move away from each other, that is, the seat body 1 and the fixed bracket 5 move away from each other. During the rebound of the damping spring 44, the friction damping generated between the friction damping rod 42 and the elastic buffer column 41 reduces the impact force generated by the release of elastic potential energy of the damping spring 44, and buffers and dampes the seat body 1 when it returns to its original position; The damping component 4 has a high degree of integration, simple structure, small space occupation, and is easy to disassemble and assemble.

[0025] Please see Figure 3-5 The seat slide rail 3 is a U-shaped slide rail, and the seat slide plate 2 is an inverted U-shaped slide plate that is slidably connected to the outer wall of the seat slide rail 3. The top end of the friction damping rod 42 extends into the seat slide rail 3, and the top end of the friction damping rod 42 is threaded with a locking nut 410. The upper end of the friction damping rod 42 is provided with an outwardly protruding shoulder 421, and the inner bottom end of the spring cover 43 is attached to the outwardly protruding shoulder 421, and the top wall of the spring cover 43 is attached to the bottom surface of the seat slide rail 3. The seat slide rail 3, the friction damping rod 42, and the spring cover 43 are detachably connected, and the connection between the three is reliable and stable. During the contraction of the damping spring 44, the outwardly protruding shoulder 421 limits and buffers the relative sliding of the friction damping rod 42 and the elastic buffer column 41.

[0026] The lower end of the friction damping rod 42 is provided with a concave shoulder 422, and a limiting ring plate 49 is sleeved on the stepped surface of the concave shoulder 422 on the friction damping rod 42. The end of the friction damping rod 42 is threadedly connected with a locking nut 48. The buffer block 47 is slidably sleeved on the friction damping rod 42, and the bottom surface of the buffer block 47 abuts against the limiting ring plate 49. During the process of the damping spring 44 releasing elastic potential energy, the buffer block 47 causes the friction damping rod 42 and the elastic buffer column 41 to slide relative to each other, thereby playing a limiting and buffering role.

[0027] The vibration-damping seat for special vehicles disclosed in this embodiment buffers and dampes the up-and-down swaying of the seat body 1 by means of a damping spring 44. At the same time, the friction damping rod 42 slides relative to the elastic buffer column 41 and generates friction damping, which improves the buffering and damping effect on the up-and-down swaying of the seat body 1. After the vibration damping assembly 4 has buffered the seat body 1, the friction damping generated between the friction damping rod 42 and the elastic buffer column 41 reduces the impact force generated by the release of elastic potential energy by the damping spring 44, and buffers and dampes the seat body 1 when it returns to its original position. The vibration damping assembly 4 has a high degree of integration, simple structure, small space occupation, convenient disassembly and assembly, stable buffering and damping operation, and good seat buffering and damping effect. Example 2

[0028] Please see Figure 1-4 and Figure 6-9In this embodiment, compared to Embodiment 1, the bottom end of the elastic buffer column 41 is provided with a damping hole 411 coaxially arranged with it. The diameter of the damping hole 411 is larger than the outer diameter of the friction damping rod 42. A damping piston 45 is fixedly mounted on the portion of the friction damping rod 42 located at the damping hole 411. In this embodiment, the damping hole 411 is a spline hole structure, and the damping piston 45 is a spline tube structure. The contact surface between the outer wall of the damping piston 45 and the inner wall of the damping hole 411 is large, resulting in greater frictional damping during sliding. To further enhance the damping effect of the damping component 4, the top surface of the damping piston 45 is provided with arc-shaped micro-slit vent holes 451 at equal intervals along its circumference. Since the air volume of the micro-slit vent holes 451 on the damping piston 45 is small, positive or negative pressure will be generated in the damping hole 411 when the friction damping rod 42 and the elastic buffer column 41 slide relative to each other, thereby achieving the effect of air damping on the relative sliding of the friction damping rod 42 and the elastic buffer column 41, and further enhancing the damping effect of the damping component 4.

[0029] The friction damping rod 42 is provided with a damping ring plate 46 at the lower end of the corresponding damping piston 45. The damping ring plate 46 has a second micro-slit vent 461 that matches the structure and number of the first micro-slit vent 451. The upper end face of the damping piston 45 has a plurality of first connecting holes 452 along its circumference. The lower end face of the damping ring plate 46 has a second connecting hole 462 at the position corresponding to the first connecting hole 452. The damping ring plate 46 is fixedly connected to the lower end face of the damping piston 45 by connecting screws passing through the second connecting hole 462 and the first connecting hole 452. The air volume when the damping piston 45 slides can be adjusted by adjusting the overlap of the first micro-slit vent 451 and the second micro-slit vent 461, thereby adjusting the air damping when the friction damping rod 42 slides relative to the elastic buffer column 41.

[0030] Compared to Embodiment 1, this embodiment adds a damping piston 45 to the friction damping rod 42, and the contact surface between the outer wall of the damping piston 45 and the inner wall of the damping hole 411 is large, resulting in greater friction damping during sliding. Furthermore, through the micro-slit vent hole 451 provided on the damping piston 45, air damping is generated when the friction damping rod 42 slides relative to the elastic buffer column 41, and the magnitude of air damping can be adjusted by the damping ring plate 46, further increasing the buffering and vibration reduction effect of the vibration damping component 4.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing seat for a special vehicle, comprising a shock-absorbing assembly provided between a seat body and a fixed support, characterized in that: Seat slides are fixedly mounted on both sides of the bottom of the seat body, and seat rails are slidably nested at the bottom of each seat slide. The fixed support is located below the seat body, and a fixed bracket is connected to the top of the fixed support. Limiting ring covers are provided on both sides of the fixed bracket at the positions corresponding to the seat rails. The vibration damping component includes an elastic buffer column fixedly mounted inside the limiting ring cover. The elastic buffer column has a hollow structure, and a friction damping rod is slidably mounted inside the hole of the elastic buffer column. The top of the friction damping rod is fixedly connected to the seat rail. A spring cover is fixedly mounted on the upper end of the friction damping rod. A vibration damping spring is sleeved on the friction damping rod between the spring cover and the elastic buffer column. The lower end of the friction damping rod passes through the limiting ring cover and the fixed bracket. A buffer block is fixedly mounted at the end of the friction damping rod, and the buffer block is in contact with the end of the fixed bracket when the friction damping rod rebounds and resets.

2. The shock absorbing seat for a special vehicle according to claim 1, characterized in that: The seat slide rail is a U-shaped slide rail, and the seat slide plate is an inverted U-shaped slide plate that is slidably connected to the outer wall of the seat slide rail; the top end of the friction damping rod extends into the seat slide rail, and the top end of the friction damping rod is threaded with a locking nut; the upper end of the friction damping rod is provided with an outwardly protruding shoulder, the inner bottom end of the spring cover is attached to the outwardly protruding shoulder, and the top wall of the spring cover is attached to the bottom surface of the seat slide rail.

3. A shock-absorbing seat for special vehicles according to claim 1, characterized in that: The lower end of the friction damping rod is provided with a concave shoulder, and a limiting ring is fitted on the step surface of the concave shoulder on the friction damping rod. A locking nut is threaded to the end of the friction damping rod. The buffer block is slidably fitted on the friction damping rod, and the bottom surface of the buffer block abuts against the limiting ring.

4. A shock-absorbing seat for special vehicles according to claim 1, characterized in that: The elastic buffer column is a hollow stepped shaft structure with a small outer diameter at the top and a large outer diameter at the bottom. The outer diameter at the top of the elastic buffer column is matched with the inner diameter of the damping spring, and the end of the damping spring abuts against the stepped surface of the elastic buffer column.

5. A shock-absorbing seat for special vehicles according to claim 1, characterized in that: The bottom end of the elastic buffer column is provided with a damping hole coaxially arranged with it. The diameter of the damping hole is larger than the outer diameter of the friction damping rod. A damping piston is fixedly provided on the part of the friction damping rod located at the damping hole. The top surface of the damping piston is provided with arc-shaped micro-slit vent holes at equal intervals along its circumference.

6. A shock-absorbing seat for special vehicles according to claim 5, characterized in that: The friction damping rod is provided with a damping ring plate at the lower end of the corresponding damping piston. The damping ring plate has a second micro-slit vent hole that matches the structure and number of the first micro-slit vent hole. The amount of air passage when the damping piston slides can be adjusted by adjusting the overlap between the first and second micro-slit vent holes. The upper end face of the damping piston has multiple first connecting holes along its circumference. The lower end face of the damping ring plate has a second connecting hole at the position corresponding to the first connecting hole. The damping ring plate is fixedly connected to the lower end face of the damping piston by connecting screws passing through the second connecting hole and the first connecting hole.

7. A shock-absorbing seat for special vehicles according to claim 5, characterized in that: The damping orifice has a spline hole structure, and the damping piston has a spline tube structure.

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