CN117124950A

CN117124950A - Vibration damper and automobile

Info

Publication number: CN117124950A
Application number: CN202311275591.9A
Authority: CN
Inventors: 满章明; 李兰; 李健伟; 董斌; 张泽华; 谢万春; 徐非凡
Original assignee: Dongfeng Commercial Vehicle Co Ltd
Current assignee: Dongfeng Commercial Vehicle Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2023-11-28

Abstract

The application relates to a vibration damper and an automobile, and relates to the technical field of vibration damping. The device comprises: a support assembly and an induction control assembly; the support assembly comprises an upper support frame and a lower frame, a vibration reduction driving part is arranged between the upper support frame and the lower frame, the upper support frame and the lower frame are connected through a transmission device, and the distance between the upper support frame and the lower frame is adjustable; the induction control assembly is in signal connection with the transmission device, and is used for detecting acceleration information of a seat and driving the transmission device to adjust the limit range of the adjustable distance between the upper support frame and the lower frame according to the seat acceleration information. According to the application, the transmission device and the vibration reduction driving part capable of automatically adapting to the acceleration of the seat are simultaneously arranged, so that the transmission device replaces a conventional damper, and the vibration reduction amplitude of the air bag can be automatically adjusted even if a complex vehicle condition is met in the driving process, thereby meeting the requirements of passengers on the comfort level of the seat.

Description

Vibration damper and automobile

Technical Field

The application relates to the technical field of vibration reduction, in particular to a vibration reduction device and an automobile.

Background

The automobile seat is an indispensable accessory of an automobile, and the shock absorption system of the automobile is more perfect along with the progress of automobile technology in the present stage, so that the shock of the automobile is relatively reduced. However, because of the rapid speed of the vehicle and road conditions, a certain vibration still occurs to the vehicle, which cannot be solved by the vibration absorbing system, especially for the driver of long-distance driving, because most of the attention is paid to the road conditions in front, and the autonomous control force on the body is weakened during long-distance transportation or driving on the road surface of the construction site with poor road conditions. Once the car seat oscillates, the waist of the driver is basically used for bearing the oscillating force, which is also the reason that most long-distance cars have lumbar diseases. To alleviate such situations, in-car seat mounted shock absorbers have become an important determining component of seat comfort.

In the related art, the type of shock absorber of the seat includes an airbag shock absorber. The air bag is adopted for vibration reduction, the air bag is adopted for providing supporting force for the seat, the air bag is inflated and deflated to realize supporting and vibration reduction of the seat, meanwhile, the damper can be manually adjusted to realize vibration reduction and attenuation, and when the bumping amplitude of the road condition is large, the damping force of the damper is increased, and the amplitude of the seat is reduced; when the road condition jolting amplitude is smaller, the damping force of the damper is reduced, and comfortable damping resistance is provided. However, in the case of continuously changing road conditions, the damping force of the damper needs to be continuously adjusted, and in the driving state, the adjustment easily causes distraction of the driver and traffic accidents easily occur.

Disclosure of Invention

Aiming at the problems that in the related art, the vibration absorber of the seat faces continuously changing road conditions, a driver is required to continuously adjust the damping force of the damper to ensure the vibration absorbing effect of the vibration absorber, so that the driver is distracted and traffic accidents are easy to occur. In a first aspect, an embodiment of the present application provides a vibration damping device, including: a support assembly and an induction control assembly; wherein,

the support assembly comprises an upper support frame and a lower frame, a vibration reduction driving part is arranged between the upper support frame and the lower frame, the upper support frame and the lower frame are connected through a transmission device, and the distance between the upper support frame and the lower frame is adjustable;

the induction control assembly is in signal connection with the transmission device, and is used for detecting acceleration information of a seat and driving the transmission device to adjust the limit range of the adjustable distance between the upper support frame and the lower frame according to the seat acceleration information.

With reference to the first aspect, in one embodiment, the vibration damping driving part includes: the vibration reduction air bag component is assembled in the support assembly, and the vibration reduction air bag component can adjust the distance between the upper support frame and the lower frame through inflation or deflation.

With reference to the first aspect, in one embodiment, the vibration damping airbag assembly includes:

an air bag arranged between the upper support frame and the lower frame;

the air valve is connected with the induction control assembly through signals and is used for inflating or deflating the air bag so that the air bag can lift the upper supporting frame or lower the lower frame.

With reference to the first aspect, in one embodiment, the transmission device includes:

the cross type lifting assembly is assembled on the supporting assembly and comprises a movable end capable of moving on the supporting assembly;

the driving part is in signal connection with the induction control assembly, is arranged on the cross type lifting assembly and is used for driving the cross type lifting assembly to move on the supporting assembly.

With reference to the first aspect, in one embodiment, the cross-type lifting assembly includes:

one end of the outer buffer bracket is fixed on the upper supporting frame, and the other end of the outer buffer bracket is movably connected with the lower frame;

and one end of the inner buffer bracket is fixed on the lower frame, the other end of the inner buffer bracket is movably connected with the upper support frame, and the middle part of the inner buffer bracket is connected with the middle part of the outer buffer bracket.

With reference to the first aspect, in one embodiment, the cross-type lifting assembly further includes:

the rack is arranged on the upper supporting frame;

the connecting rod is arranged on the inner buffer support, the connecting rod is connected with the driving part, a gear is arranged at the end part of the connecting rod, and the gear is meshed with the rack.

With reference to the first aspect, in one embodiment, the driving part includes a forward and reverse rotation motor, and the forward and reverse rotation motor is connected with the middle part of the connecting rod; wherein,

when the forward and reverse rotation motor drives the connecting rod to rotate forward or reversely, the gear can move along the rack so as to drive the inner buffer support and the outer buffer support to move back and forth in the length direction of the support assembly.

With reference to the first aspect, in one implementation manner, an upper chute is arranged in the upper supporting frame, and a bearing is arranged at the tail end of the connecting rod; wherein,

when the gear slides in the rack, the bearing moves along the upper chute.

With reference to the first aspect, in one implementation manner, a lower chute is provided in the lower frame, and a roller is provided at a movable end of the outer buffer bracket, and the roller is provided in the lower chute.

In a second aspect, an embodiment of the present application provides an automobile, including: a vibration damping device according to any one of the preceding claims.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

through setting up transmission and damping drive portion that can adapt to seat acceleration simultaneously for transmission replaces conventional attenuator, even meet complicated car condition in the driving process, but also automatically regulated gasbag damping amplitude, satisfies the requirement of personnel of taking the bus to the seat comfort level.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a vibration damping device according to an embodiment of the present application;

FIG. 2 is a schematic view of a partial structure of an end portion of a connecting rod according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a vibration damping device according to an embodiment of the present application;

fig. 4 is a schematic view of the overall structure of a seat according to an embodiment of the present application.

In the figure: 1. a support assembly; 11. an upper support frame; 111. an upper chute; 12. a lower frame; 2. a vibration damping airbag assembly; 21. an air bag; 22. an air valve; 3. an inductive control assembly; 31. a controller; 32. a sensor; 4. a transmission device; 41. a cross lifting assembly; 411. an outer buffer support; 412. an inner buffer bracket; 413. a connecting rod; 414. a rack; 415. a gear; 416. a roller; 42. a driving section; 43. a bearing; 5. and (5) a seat.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the related art, the types of shock absorbers for seats include two types of vibration damping, namely mechanical vibration damping and air-bubble vibration damping. The mechanical vibration reduction generally provides seat supporting force through tension springs, and the damper provides vibration reduction attenuation, but because the damping of the damper cannot be conveniently adjusted, the vibration reduction range is larger under special road conditions, and thus the comfort of passengers is affected. As shown in fig. 1, 3 and 4, the present application provides a vibration damping device including: support assembly 1, vibration damping driving part and induction control assembly 3

The support assembly 1 comprises an upper support frame 11 and a lower frame 12, a vibration reduction driving part is arranged between the upper support frame 11 and the lower frame 12, the upper support frame 11 and the lower frame 12 are connected through a transmission device 4, and the distance between the upper support frame 11 and the lower frame 12 is adjustable;

the induction control assembly 3 is in signal connection with the transmission device 4, and the induction control assembly 3 is used for detecting acceleration information of the seat 5 and driving the transmission device 4 to adjust the limit range of the adjustable distance between the upper support frame 11 and the lower frame 12 according to the acceleration information of the seat 5.

In the related art, the seat of the engineering machinery adopts the passive damper, so that on one hand, the damping effect is to be improved, and on the other hand, the damping adjustment depends on the active adjustment of the seat riding personnel, so that the seat is very inconvenient. In the present application, the upper support frame 11 is used to support in front of the seat 5, and the distance between the upper support frame 11 and the lower frame 12 is changed, i.e. the change of the ascending or descending of the seat. In the embodiment of the application, the induction control assembly 3 is adopted to acquire the acceleration information of the seat 5, the acceleration information of the seat is compared with the acceleration curve in the induction control assembly 3, and the limit range of the adjustable distance between the upper support frame 11 and the lower frame 12 is controlled according to the comparison result. It will be appreciated that the limit range of the adjustable distance is not the real-time distance between the upper support frame 11 and the lower frame 12, but the amplitude of the change in distance between the upper support frame 11 and the lower frame 12 during the opposite movement or opposite movement in vibration damping. The vibration damping action of the upper support frame 11 and the lower frame 12 drives the seat to lift up and down to damp, and the vibration damping driving part provides the vibration damping power.

Optionally, the induction control assembly 3 comprises: a controller 31 assembled on the side surface of the upper support frame 11; and a sensor 32, which is assembled on the lower frame 12, wherein the sensor 32 is used for acquiring the acceleration value of the seat 5.

Specifically, the vibration damping driving section includes: a vibration damping airbag module 2 assembled in the support assembly 1, wherein the vibration damping airbag module 2 can adjust the distance between the upper support frame 11 and the lower frame 12 by inflating or deflating.

Specifically, the vibration damping airbag module 2 includes: an air bag 21 and an air valve 22; wherein,

an air bag 21 is provided between the upper support frame 11 and the lower frame 12. The air valve 22 is in signal connection with the induction control assembly 3, and the air valve 22 is used for inflating or deflating the air bag 21 so as to enable the air bag 21 to lift the upper supporting frame 11 or lower the lower frame 12.

It is understood that the supporting force of the upper support frame 11 becomes large when the airbag 21 is inflated, and the seat 5 moves upward. The airbag 21 is deflated, the supporting force on the upper support frame 11 becomes smaller, and the seat 5 moves downward. The purpose of reducing the adjustment range of the seat is achieved.

When a person is not sitting in the seat, the air pressure in the air bag 21 only needs to maintain the self weight of the seat 5, and the self-adaptive air valve 22 is used for maintaining the balance position; when a person sits, the air pressure (0.1 Mpa) in the air bag 21 cannot support the weight of the person, so that the air spring starts to compress, and the seat 5 is lowered (when the seat 5 is lower, the seat support collides with the buffer rubber block, namely, the person feel that the person touches the bottom); the seat 5 is lowered, the air inlet valve of the self-adaptive air valve is triggered to be opened, the air bag 21 is inflated, and the seat 5 is lifted to the working height along with the increase of the pressure (> 0.4 Mpa) in the air bag 21; when the road surface with larger jolt amplitude is bumpy, the suspension moves up and down to trigger the air valve 22 to charge and discharge the air valve, so that the balance of air pressure and gravity is maintained for the seat, and the seat 5 is ensured to jump up and down at the working height position all the time.

In some preferred embodiments, the transmission 4 comprises: a cross-type lifting assembly 41 and a driving part 42; wherein,

a cross lifting assembly 41 assembled on the support assembly 1, wherein the cross lifting assembly 41 comprises a movable end capable of moving on the support assembly 1;

and the driving part 42 is in signal connection with the induction control assembly 3, and the driving part 42 is arranged on the cross lifting assembly 41 and is used for driving the cross lifting assembly 41 to move on the support assembly 1.

It can be appreciated that the driving portion 42 can adjust the maximum height of the upper support frame 11 by adjusting the arm of force supported by the cross lifting assembly 41, and the actively adjustable structure replaces the damper in the related art.

Specifically, the cross-type lifting assembly 41 includes: an outer buffer bracket 411 and an inner buffer bracket 412; wherein,

an outer buffer bracket 411, one end of which is fixed on the upper support frame 11, and the other end of which is movably connected with the lower frame 12. And an inner buffer bracket 412 intersecting the outer buffer bracket 411, wherein one end of the inner buffer bracket 412 is fixed on the lower frame 12, the other end of the inner buffer bracket 412 is movably connected with the upper support frame 11, and the middle part of the inner buffer bracket 412 is connected with the middle part of the outer buffer bracket 411.

It should be noted that the connection mode between the inner and outer buffer brackets and the upper and lower frames 11 and 12 according to the present application is not limited to the above embodiments. Meanwhile, as shown in fig. 1, two sets of two pairs of outer and inner buffer brackets 411 and 412 symmetrically arranged in the width direction of the support assembly 1 may be arranged as needed.

Further, as shown in fig. 1 and 2, the cross-type lifting assembly 41 further includes: a rack 414 and a link 413 provided on the upper support frame 11; wherein,

and a link 413 provided on the inner buffer bracket 412, wherein the link 413 is connected to the driving unit 42, a gear 415 is provided at an end of the link 413, and the gear 415 is engaged with the rack 414.

It will be appreciated that when the link rotates, the gear 415 at the end thereof can move along the rack 414 by meshing, thereby driving the inner and outer shock mounts 412, 411 to move back and forth in the longitudinal direction of the rack 414.

Further, in some embodiments, the gear 415 can only move on the rack 414, and the connecting rod 413 is connected to the inner buffer support 412, so that the connecting rod 413, the inner buffer support 412 and the outer buffer support 411 are all connected, and the air bag 21 can lift the upper support 11 to drive the inner buffer support 412 and the outer buffer support 411 to act when inflated and deflated. Therefore, the position of the gear 415 on the rack 414 affects the movement ranges of the inner and outer cushion brackets 412 and 411, and thus affects the up-down ranges of the upper support frame 11 and the seat 5. And the driving part 42 and the vibration damping air bag assembly 2 work simultaneously, but the power sources are separated independently, and the damper function of the vibration damping air bag assembly 2 in the related art is replaced only by the mutual influence of the transmission device 4.

Specifically, the driving part 42 includes a forward and reverse rotation motor, and the forward and reverse rotation motor is connected to the middle part of the connecting rod 413; wherein,

when the forward and reverse rotation motor drives the connecting rod 413 to rotate forward or reverse, the gear 415 can move along the rack 414, so as to drive the inner buffer bracket 412 and the outer buffer bracket 411 to move back and forth in the length direction of the support assembly 1.

In some alternative embodiments, as shown in fig. 1, an upper chute 111 is disposed in the upper supporting frame 11, and a bearing 43 is disposed at the end of the connecting rod 413; wherein the bearing 43 moves along the upper chute 111 when the gear 415 slides within the rack 414.

Further, a lower chute is provided in the lower frame 12, a roller 416 is provided at the movable end of the outer buffer bracket 411, and the roller 416 is provided in the lower chute.

It will be appreciated that, as shown in fig. 1 and 3, the driving part 42 drives the gear 415 to move along the rack 414, and the bearing 43 moves along the upper chute 111, and one end of the inner buffer bracket 412 and one end of the outer buffer bracket 411 are fixed to the support assembly 1 as fixed ends. The roller 416 is driven by the gear 415 to slide left and right along the length direction (i.e., left and right direction in fig. 3) of the lower frame 12, so as to drive the cross lifting assembly 41 to lift or descend, thereby reducing the jumping stroke of the upper support frame 11.

In a second aspect the application provides a vibration damping seat comprising a vibration damping device according to any of the embodiments described above.

In a third aspect, the present application provides an automobile comprising: a vibration damping device, the device comprising: support assembly 1, vibration damping driving part and induction control assembly 3

It should be noted that the connection mode between the inner and outer buffer brackets and the upper and lower frames 11 and 12 according to the present application is not limited to the above embodiments.

When the vehicle is running, the sensor 32 collects the acceleration value of the seat frame (the seat frame is connected with the floor of the vehicle body of the vehicle), the acceleration curve preset in the controller 31 is used for comparison, the controller 31 controls the driving part 42 to realize forward rotation or reverse rotation according to the comparison result, the driving part 42 receives the transmitted control signal according to the magnitude and direction of the acceleration to realize forward and reverse rotation, and then the double-side gears 415 are driven to move back and forth between the double-side racks 414, and then the cross arm drives the roller 416 to move back and forth. Meanwhile, the air bag 21 realizes inflation and deflation through the control of the air valve 22 on the cross arm, the supporting force of the air bag 21 is increased through inflation, the seat moves upwards, the supporting force of the air bag 21 is reduced through deflation, the seat moves downwards, the front and back movement of the gear 415 and the roller 416 drive the cross arm to realize the up and down movement of the seat 5, the purpose of attenuating the adjustment range of the seat 5 is achieved, the transmission device 4 actively controlled through the set can replace an original damper to attenuate the vibration reduction acceleration of the seat, the vibration reduction stroke of the seat 5 can be realized not to exceed the balance position within +/-5 mm through the transmission device 4, namely, even if the vehicle jolt range is increased, the seat 5 is always kept at the balance position, passengers can not feel jolt, and the purpose of actively reducing vibration is achieved.

In summary, through setting up transmission and damping drive portion that can adapt to seat acceleration voluntarily simultaneously for transmission replaces conventional attenuator, even meet complicated car condition in the driving process, but also automatically regulated gasbag damping amplitude, satisfies the requirement of passenger to the seat comfort level.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration damping device, comprising:

the support assembly (1) comprises an upper support frame (11) and a lower frame (12), a vibration reduction driving part is arranged between the upper support frame (11) and the lower frame (12), the upper support frame (11) and the lower frame (12) are connected through a transmission device (4), and the distance between the upper support frame (11) and the lower frame (12) is adjustable;

the induction control assembly (3) is in signal connection with the transmission device (4), and the induction control assembly (3) is used for detecting acceleration information of the seat (5) and driving the transmission device (4) to adjust the limit range of the adjustable distance between the upper support frame (11) and the lower frame (12) according to the acceleration information of the seat (5).

2. The vibration damping device according to claim 1, wherein the vibration damping driving section includes:

the vibration reduction air bag assembly (2) is arranged in the support assembly (1) in a combined mode, and the vibration reduction air bag assembly (2) can be inflated or deflated to adjust the distance between the upper support frame (11) and the lower frame (12).

3. The vibration damping device of claim 2, wherein: the vibration damping airbag assembly (2) comprises:

an airbag (21) provided between the upper support frame (11) and the lower frame (12);

the air valve (22) is in signal connection with the induction control assembly (3), and the air valve (22) is used for inflating or deflating the air bag (21) so as to enable the air bag (21) to lift the upper supporting frame (11) or lower the lower frame (12).

4. Damping device according to claim 2, wherein the transmission (4) comprises:

a cross lifting assembly (41) assembled on the support assembly (1), wherein the cross lifting assembly (41) comprises a movable end capable of moving on the support assembly (1);

the driving part (42) is in signal connection with the induction control assembly (3), and the driving part (42) is arranged on the cross type lifting assembly (41) and is used for driving the cross type lifting assembly (41) to move on the support assembly (1).

5. Damping device according to claim 4, wherein the cross lift assembly (41) comprises:

an outer buffer bracket (411), one end of which is fixed on the upper support frame (11) and the other end of which is movably connected with the lower frame (12);

and an inner buffer bracket (412) which is arranged to be crossed with the outer buffer bracket (411), wherein one end of the inner buffer bracket (412) is fixed on the lower frame (12), the other end of the inner buffer bracket is movably connected with the upper support frame (11), and the middle part of the inner buffer bracket (412) is connected with the middle part of the outer buffer bracket (411).

6. Damping device according to claim 5, wherein the cross lift assembly (41) further comprises:

a rack (414) arranged on the upper support frame (11);

the connecting rod (413) is arranged on the inner buffer support (412), the connecting rod (413) is connected with the driving part (42), a gear (415) is arranged at the end part of the connecting rod (413), and the gear (415) is meshed with the rack (414).

7. Damping device according to claim 6, wherein the driving part (42) comprises a reversible motor connected to the middle part of the connecting rod (413); wherein,

when the forward and reverse rotation motor drives the connecting rod (413) to rotate forward or reversely, the gear (415) can move along the rack (414) so as to drive the inner buffer support (412) and the outer buffer support (411) to move back and forth in the length direction of the support assembly (1).

8. The vibration damping device of claim 6, wherein: an upper sliding groove (111) is formed in the upper supporting frame (11), and a bearing (43) is arranged at the tail end of the connecting rod (413); wherein,

when the gear (415) slides in the rack (414), the bearing (43) moves along the upper chute (111).

9. The vibration damping device of claim 6, wherein: a lower chute is arranged in the lower frame (12), a roller (416) is arranged at the movable end of the outer buffer support (411), and the roller (416) is arranged in the lower chute.

10. An automobile, comprising: vibration damping device according to any one of claims 1-9.