CN108909557B - Nonlinear seat suspension and driving chair - Google Patents
Nonlinear seat suspension and driving chair Download PDFInfo
- Publication number
- CN108909557B CN108909557B CN201810956011.5A CN201810956011A CN108909557B CN 108909557 B CN108909557 B CN 108909557B CN 201810956011 A CN201810956011 A CN 201810956011A CN 108909557 B CN108909557 B CN 108909557B
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- suspension
- nonlinear
- seat
- vertical
- lower chassis
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- 239000000725 suspension Substances 0.000 title claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000002955 isolation Methods 0.000 abstract description 17
- 230000003068 static effect Effects 0.000 abstract description 14
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/502—Seat suspension devices attached to the base of the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/505—Adjustable suspension including height adjustment
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The present invention relates to a nonlinear seat suspension and a driver's seat. The nonlinear seat suspension comprises a frame body, wherein the frame body comprises an upper suspension, a vertical suspension and a lower chassis, elastic compression parts respectively connected with the upper suspension and the lower chassis are arranged in the vertical suspension, and cams are arranged on two sides of the vertical suspension; the side contact of every cam far away from vertical suspension all is provided with rolling mechanism, connect through the elasticity tensile part between the rolling mechanism, rolling mechanism is kept away from the side of elasticity tensile part is provided with horizontal sliding mechanism. The nonlinear seat suspension provided by the invention has the advantages of nonlinear contact, vibration isolation frequency bandwidth, low static rigidity, high dynamic rigidity and the like, overcomes the condition of larger vibration stroke and static displacement caused by the requirement of low rigidity in the motion process of the linear suspension, and has better comfort level and simple design.
Description
Technical Field
The present invention is in the field of vehicles, and more particularly, to a non-linear seat suspension and driver's seat.
Background
The driving chairs used in the market at present are particularly applied to driving chairs of wheeled tractors, forklift trucks and the like, and a driver needs to drive while working, so that the requirements on the functions of the driving chairs are relatively high, but most of the prior driving chairs have simple structures and single functions, and the functions important for the driver, such as auxiliary driving functions, driving comfort and the like, cannot be reflected.
The vibration injury suffered by the driver during operation mainly comes from low-frequency vibration, the rigidity of the prior driving chair suspension is relatively high, the natural frequency of the chair suspension system is increased, the vibration attenuation caused by low frequency is little, and the purpose of improving the comfort of the driver is not achieved. On the other hand, if the rigidity is small, the driver will make the seat generate larger displacement when contacting the seat, if the vibration of the vehicle is strong during running, larger vibration stroke will be brought, the larger displacement generated when the driver contacts the seat brings space limitation to the arrangement of the seat suspension, and the excessive vibration stroke will cause the driver to decrease the steering ability of the vehicle direction, so that the steering is disordered, the driving risk of the driver is increased, and the probability of traffic accident is possibly increased. At present, a plurality of linear seat suspensions and air spring suspensions are applied, the linear suspensions have theoretical limitation on the problem of low-frequency vibration isolation, namely, the static displacement is large when the low-frequency vibration isolation performance is good, the low-frequency vibration isolation requirement of off-highway vehicles (working vehicles) is difficult to meet, and the air spring suspensions have better low-frequency vibration isolation performance but require an air chamber with larger volume. The active and semi-active suspensions theoretically have ideal vibration isolation performance, but the system is complex, the cost is high and the energy consumption is high.
Therefore, the driving chair with scientific design structure and better driving comfort has important lifting value on the whole quality of the working vehicle and has very important significance on drivers.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of poor damping effect, complex system, high cost and high energy consumption of the conventional driving chair suspension, and provides a nonlinear seat suspension. The nonlinear seat suspension provided by the invention has the advantages of nonlinear contact, vibration isolation frequency bandwidth, low static rigidity, high dynamic rigidity and the like, overcomes the condition of larger vibration stroke and static displacement caused by the requirement of low rigidity in the motion process of the linear suspension, and has better comfort level and simple design.
Another object of the present invention is to provide a driver's chair.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
the nonlinear seat suspension comprises a frame body, wherein the frame body comprises an upper suspension, a vertical suspension and a lower chassis, elastic compression parts respectively connected with the upper suspension and the lower chassis are arranged in the vertical suspension, and cams are arranged on two sides of the vertical suspension;
the side contact of every cam far away from vertical suspension all is provided with rolling mechanism, connect through the elasticity tensile part between the rolling mechanism, rolling mechanism is kept away from the side of elasticity tensile part is provided with horizontal sliding mechanism.
The upper suspension and the lower chassis play a supporting and fixing role, when the weight of a person is received (vertically downwards), the nonlinear seat suspension vibrates in the vertical direction, the elastic compression part is compressed, and then the cam is driven to move downwards, so that the cam and the rolling mechanism which are in contact mutually extrude each other, the rolling mechanism rolls back and forth on the periphery of the cam, and the elastic stretching part drives the horizontal sliding mechanism to stretch and contract back and forth in the horizontal direction, so that the vibration in the vertical direction is converted into the stretching in the horizontal direction, the nonlinear seat suspension has the characteristics of higher rigidity in the static state and lower rigidity in the dynamic state, and a better vibration reduction effect is achieved.
Preferably, the elastic compression member is a compression spring.
The compression spring has better compression and recovery performance.
Preferably, the cam is elliptical.
More preferably, the long axis of the cam is disposed in the vertical direction.
The specially designed cam and the better contact with the rolling mechanism, squeeze and roll.
Preferably, the cams are symmetrically arranged.
Preferably, the cam is detachably connected to the vertical suspension.
The detachable connection can conveniently replace the worn cam, and the service life of the nonlinear seat suspension is prolonged; in addition, the proper cam size can be changed under different requirements so as to adapt to different weights (different vibration reduction requirements).
More preferably, the cam is connected to the vertical suspension by a bolt structure.
Preferably, the elastic tension member is a tension spring.
The stretching spring has a good stretching effect, can realize that vibration in the vertical direction is converted into movement in the horizontal direction, and has a good vibration reduction effect.
Preferably, the rolling mechanism is a roller bearing.
Preferably, the rolling mechanism and the horizontal sliding mechanism are fixedly connected through a bolt structure.
Preferably, the horizontal sliding mechanism comprises a sliding column and a sliding groove which are fixedly connected with the rolling mechanism, and the horizontal sliding mechanism is fixedly connected with the frame body.
The sliding column moves back and forth in the sliding groove, so that the vibration in the vertical direction can be well converted into the movement in the horizontal direction, and the vibration reduction effect is good.
Preferably, the frame body further comprises a support frame vertically arranged on the lower chassis, and the horizontal sliding mechanism is fixedly connected with the support frame.
In order to achieve a better vibration reduction effect, preferably, a scissor type lifting mechanism is further arranged between the upper suspension and the lower chassis.
Existing scissor lift mechanisms can be used in the present invention.
Preferably, the scissor lift mechanism comprises a scissor lift suspension and a cylinder for driving the scissor lift suspension to lift.
The invention further discloses a driving chair, which comprises a cushion, wherein the bottom of the cushion is provided with the nonlinear seat suspension.
Compared with the prior art, the invention has the following beneficial effects:
the nonlinear seat suspension provided by the invention has the advantages of nonlinear contact, vibration isolation frequency bandwidth, low static rigidity, high dynamic rigidity and the like, overcomes the condition of larger vibration stroke and static displacement caused by the requirement of low rigidity in the motion process of the linear suspension, and has better comfort level and simple design.
Drawings
Fig. 1 is a schematic structural view of a nonlinear seat suspension provided in embodiment 1;
fig. 2 is another schematic structural view of the nonlinear seat suspension provided in embodiment 1 (no-shear lifting mechanism);
FIG. 3 is a force-displacement static characteristic curve of the nonlinear seat suspension provided in example 1;
FIG. 4 is a graph showing a comparison of force versus displacement characteristics of a nonlinear seat suspension and a linear seat suspension provided in example 1;
wherein 1 is a frame body, 101 is an upper suspension, 102 is a vertical suspension, 103 is a lower chassis, and 104 is a supporting frame; 2 is an elastic compression member; 3 is a cam; 4 is an elastic stretch member; 5 is a rolling mechanism; 6 is a horizontal sliding mechanism, 601 is a sliding column, and 602 is a sliding groove; 7 is a scissor type lifting mechanism, 701 is a scissor type lifting suspension;
a is nonlinear; b is linear.
Detailed Description
The present invention will be further described in detail with reference to the drawings and the detailed description of the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
It will be understood that when an original is referred to as being "disposed" or "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Example 1
The embodiment provides a nonlinear seat suspension, as shown in fig. 1-2, which comprises a frame body 1, wherein the frame body 1 comprises an upper suspension 101, a vertical suspension 102 and a lower chassis 103, an elastic compression part 2 respectively connected with the upper suspension 101 and the lower chassis 103 is arranged in the vertical suspension 102, and cams 3 are symmetrically arranged on two sides of the vertical suspension 102; the side surface contact of each cam 3 far away from the vertical suspension 102 is provided with a rolling mechanism 5, the rolling mechanisms 5 are connected through an elastic stretching component 4, and the side surface of the rolling mechanism 5 far away from the elastic stretching component 4 is provided with a horizontal sliding mechanism 6.
In the present embodiment, the elastic compression member 2 is a compression spring; the cam 3 is an elliptical cam, and the long axis of the cam 3 is arranged in the vertical direction; the elastic tension member 4 is a tension spring, and the rolling mechanism 5 is a roller bearing.
The oval cam is detachably connected to the vertical suspension 102 in order to allow replacement of the oval cam when required. Specifically, the two are connected by a bolt structure. The special connection mode can conveniently replace the worn elliptical cam, so that the service life of the nonlinear seat suspension is prolonged; in addition, the proper elliptical cam size can be replaced under different requirements so as to adapt to different vibration reduction requirements of different weights.
In this embodiment, the horizontal sliding mechanism 6 includes a sliding column 601 and a sliding groove 602 fixedly connected to the rolling mechanism 5, and the horizontal sliding mechanism 6 is fixedly connected to the frame 1. The frame body 1 further comprises a support frame 104 vertically arranged on the lower chassis 103, and the horizontal sliding mechanism 6 is fixedly connected with the support frame 104.
In order to further enhance the vibration damping effect, a scissor lift mechanism 7 is also provided between the upper suspension 101 and the lower chassis 103. Specifically, the scissor lift mechanism 7 includes a scissor lift suspension 701 and an air cylinder for driving the scissor lift suspension 701 to lift, both ends of the scissor lift suspension 701 are fixedly connected with the upper suspension 101 and the lower chassis 103, respectively, and the air cylinder is disposed on the lower chassis 103.
The upper suspension and the lower chassis play a supporting and fixing role, when the weight of a person is received (vertically downwards), the nonlinear seat suspension vibrates in the vertical direction, the elastic compression part is compressed, and then the cam is driven to move downwards, so that the cam and the rolling mechanism which are in contact mutually extrude each other, the rolling mechanism rolls back and forth on the periphery of the cam, and the elastic stretching part drives the horizontal sliding mechanism to stretch and contract back and forth in the horizontal direction, so that the vibration in the vertical direction is converted into the stretching in the horizontal direction, the nonlinear seat suspension has the characteristics of higher rigidity in the static state and lower rigidity in the dynamic state, and a better vibration reduction effect is achieved. As shown in fig. 3, the force-displacement static characteristic curve in the motion process of the nonlinear seat suspension is nonlinear. The rigidity is changed from large to small to large, so that the smaller static rigidity of the seat suspension can be realized, and the low-frequency vibration isolation performance is good. As shown in fig. 4, for comparison of the linear vibration isolation system and the nonlinear vibration isolation system, the graph a shows the nonlinear vibration isolation system, and the graph B shows the nonlinear vibration isolation system, and as can be seen from the graph, the vibration isolation section of the nonlinear vibration isolation system has small displacement variation near the equilibrium position, so that the stability and the vibration isolation efficiency of the suspension system are greatly improved.
The nonlinear seat suspension provided by the invention has the advantages of nonlinear contact, vibration isolation frequency bandwidth, low static rigidity, high dynamic rigidity and the like, overcomes the condition of larger vibration stroke and static displacement caused by the requirement of low rigidity in the motion process of the linear suspension, and has better comfort level and simple design.
The nonlinear seat suspension provided by the embodiment can be applied to a conventional driving chair, and particularly the driving chair comprises a cushion, and the bottom of the cushion is provided with the nonlinear seat suspension.
The driving chair provided by the invention has a good vibration reduction effect and high comfort level.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (6)
1. The nonlinear seat suspension is characterized by comprising a frame body (1), wherein the frame body (1) comprises an upper suspension (101), a vertical suspension (102) and a lower chassis (103), elastic compression components (2) respectively connected with the upper suspension (101) and the lower chassis (103) are arranged in the vertical suspension (102), and cams (3) are arranged on two sides of the vertical suspension (102);
the side surface of each cam (3) far away from the vertical suspension (102) is contacted with a rolling mechanism (5), the rolling mechanisms (5) are connected through an elastic stretching component (4), and the side surface of the rolling mechanism (5) far away from the elastic stretching component (4) is provided with a horizontal sliding mechanism (6);
the horizontal sliding mechanism (6) comprises a sliding column (601) and a sliding groove (602) which are fixedly connected with the rolling mechanism (5), and the horizontal sliding mechanism (6) is fixedly connected with the frame body (1);
the cam (3) is elliptical;
the long shaft of the cam is arranged in the vertical direction;
the elastic stretching component (4) is a stretching spring;
the frame body (1) further comprises a supporting frame (104) vertically arranged on the lower chassis (103), and the horizontal sliding mechanism (6) is fixedly connected with the supporting frame (104).
2. A non-linear seat suspension according to claim 1, characterized in that the resilient compression member (2) is a compression spring.
3. The non-linear seat suspension according to claim 1, characterized in that the rolling mechanism (5) is a roller bearing.
4. The non-linear seat suspension according to claim 1, characterized in that a scissor lift mechanism (7) is also provided between the upper suspension (101) and the lower chassis (103).
5. The non-linear seat suspension according to claim 4, characterized in that the scissor lift mechanism (7) comprises a scissor lift suspension (701) and a cylinder for driving the scissor lift suspension (701) to lift.
6. A driver's seat, comprising a seat cushion, wherein the bottom of the seat cushion is provided with the nonlinear seat suspension according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956011.5A CN108909557B (en) | 2018-08-21 | 2018-08-21 | Nonlinear seat suspension and driving chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956011.5A CN108909557B (en) | 2018-08-21 | 2018-08-21 | Nonlinear seat suspension and driving chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108909557A CN108909557A (en) | 2018-11-30 |
| CN108909557B true CN108909557B (en) | 2024-03-26 |
Family
ID=64405552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810956011.5A Active CN108909557B (en) | 2018-08-21 | 2018-08-21 | Nonlinear seat suspension and driving chair |
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| Country | Link |
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| CN (1) | CN108909557B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624797B (en) * | 2018-12-04 | 2020-11-24 | 河北铠特农业机械有限公司 | Automatic balancing device for mountain tractor seat |
| CN109895666A (en) * | 2019-03-25 | 2019-06-18 | 华南农业大学 | A kind of non-linear seat suspension and driver seat with micro-adjusting mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0073096A1 (en) * | 1981-08-13 | 1983-03-02 | Sears Manufacturing Company | Seat support and suspension system |
| US5222709A (en) * | 1990-04-13 | 1993-06-29 | Rosdon Engineering And Manufacturing Pty. Ltd. | Vehicle seat suspension unit |
| CN202520848U (en) * | 2012-04-20 | 2012-11-07 | 吉林大学 | Ultra-low frequency vibration isolator based on positive and negative stiffness springs in parallel |
| CN203641365U (en) * | 2014-01-07 | 2014-06-11 | 湖南大学 | Quasi zero stiffness vibration isolator |
| CN104401240A (en) * | 2014-11-24 | 2015-03-11 | 吉林大学 | Two-dimensional nonlinear vibration-isolating suspension frame of seats of off-road vehicle |
| CN107740843A (en) * | 2017-11-17 | 2018-02-27 | 北京市劳动保护科学研究所 | A kind of cam bawl negative stiffness structure low frequency vibration isolation device |
| CN107776445A (en) * | 2017-09-13 | 2018-03-09 | 华南农业大学 | Multifunctional driver seat and application |
| CN208730829U (en) * | 2018-08-21 | 2019-04-12 | 华南农业大学 | A kind of non-linear seat suspension and driver seat |
-
2018
- 2018-08-21 CN CN201810956011.5A patent/CN108909557B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0073096A1 (en) * | 1981-08-13 | 1983-03-02 | Sears Manufacturing Company | Seat support and suspension system |
| US5222709A (en) * | 1990-04-13 | 1993-06-29 | Rosdon Engineering And Manufacturing Pty. Ltd. | Vehicle seat suspension unit |
| CN202520848U (en) * | 2012-04-20 | 2012-11-07 | 吉林大学 | Ultra-low frequency vibration isolator based on positive and negative stiffness springs in parallel |
| CN203641365U (en) * | 2014-01-07 | 2014-06-11 | 湖南大学 | Quasi zero stiffness vibration isolator |
| CN104401240A (en) * | 2014-11-24 | 2015-03-11 | 吉林大学 | Two-dimensional nonlinear vibration-isolating suspension frame of seats of off-road vehicle |
| CN107776445A (en) * | 2017-09-13 | 2018-03-09 | 华南农业大学 | Multifunctional driver seat and application |
| CN107740843A (en) * | 2017-11-17 | 2018-02-27 | 北京市劳动保护科学研究所 | A kind of cam bawl negative stiffness structure low frequency vibration isolation device |
| CN208730829U (en) * | 2018-08-21 | 2019-04-12 | 华南农业大学 | A kind of non-linear seat suspension and driver seat |
Non-Patent Citations (2)
| Title |
|---|
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| CN108909557A (en) | 2018-11-30 |
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