CN210881753U - A vibration damping device, seat and vehicle - Google Patents

Abstract

The utility model relates to the field of seat vibration reduction, in particular to a vibration reduction device, a seat and a vehicle, wherein the vibration reduction device comprises two support plates, four folding frames and springs which are oppositely arranged; a fixing groove extends in the horizontal direction of the side surface of the supporting plate; one end of each folding frame is installed in the fixing groove through a rotating shaft, the other end of each folding frame is installed in the fixing groove of the other supporting plate through a rotating shaft, the four folding frames are symmetrically arranged in pairs, and springs are arranged between the two mutually-symmetrical folding frames; the folding frame comprises a first folding frame and a second folding frame, and the first folding frame is connected with the second folding frame through a rotating shaft. The utility model discloses a damping device plays the effect of a damping through the tensile restriction of self structural deformation and spring, simultaneously the utility model discloses a damping seat makes the personnel of taking not basically have the sense of shaking through controlling magnetorheological suspensions and the dual damping of damping device, and the damping effect is obvious.

Description

A vibration damping device, seat and vehicle

technical field

The utility model relates to the field of seat vibration reduction, in particular to a vibration reduction device, a seat and a vehicle.

Background technique

At present, the vibration reduction technology used in domestic trains adopts direct vibration reduction in most cases, that is, through the hydraulic shock absorber, the hydraulic damping force is formed by the reciprocating motion of the stretching and compressing piston rod to achieve the purpose of vibration reduction, so as to achieve good vibration reduction and damping. effect and flexible damping effect. In more advanced models, seat vibration damping pads are usually installed under the seat to achieve the function of sound insulation and vibration reduction. In the domestic research on train seats, most of them are based on the research on the comfort of train seats, that is, the seat structure is designed through aerodynamics, fatigue reliability, ergonomics, etc. New breakthroughs have been made in the research direction of vibration damping seats, and the magnetorheological fluid is gradually combined with the vibration damping of seats.

There have been many types of magnetorheological fluid vibration-damping seats, but most of these seats only use magnetorheological fluid for vibration reduction, and the effect is not obvious. The vibration reduction response time is long, and the vibration reduction control cannot be performed quickly in the case of continuous vibration, resulting in part of the vibration will still be transmitted to the occupants, making the occupants feel obvious vibration; A car seat vibration damping device and an automobile made of magnetorheological fluid material, wherein the magnetorheological fluid material flows back and forth between the two chambers through an orifice on the working piston, and the viscosity of the magnetorheological fluid material is different. The damping generated by the orifice changes accordingly, realizing the variable damping attenuation of the vibration; the whole process is complicated and lengthy, and it is possible that the current vibration has not been processed, and the next vibration has arrived. For another example, Chinese patent CN201611020308.8 discloses a vehicle, a magnetorheological fluid type vehicle vibration damping seat control device and a method thereof, which requires the magnetorheological fluid to pass through the damping hole of the damping plate to complete the damping, and the process is also complicated and lengthy. Vibration can't handle the problem.

Utility model content

The purpose of the utility model is to provide a vibration damping device, a seat and a vehicle, which can shield and weaken the vibration and reduce the vibration sense of the passengers.

In order to solve the above technical problems, the utility model provides a vibration damping device, which includes two oppositely arranged support plates, four folding frames and springs; a fixing groove is extended on the side of the support plate in the horizontal direction; the folding frame One end is installed in the fixing groove through the rotating shaft, and the other end is installed in the fixing groove on the other supporting plate through the rotating shaft, so as to realize the symmetrical arrangement of the four folding frames in two pairs, among which a spring is arranged between the two mutually symmetrical folding frames; The folding frame includes a first folding frame and a second folding frame, and the first folding frame and the second folding frame are connected by a rotating shaft.

As a preferred solution, the support plate has a square structure, and a reinforcing plate is arranged between the adjacent fixing grooves.

As a preferred solution, the first folding frame and the second folding frame are respectively provided with a U-shaped structure, the U-shaped structure is provided with a chute, a sliding rod is provided on the chute, and one end of the spring is connected to a The sliding rod on the folding frame is connected, and the other end is connected with the sliding rod on the symmetrical folding frame.

As a preferred solution, a U-shaped structure is extended at both ends of the folding frame perpendicular to the direction of the folding frame, a chute is provided on the U-shaped structure, a sliding rod is arranged on the chute, and one end of the spring is connected to a folding frame. The slide bar on the frame is connected, and the other end is connected with the slide bar on the symmetrical folding frame.

As a preferred solution, a locking device is provided on the sliding rod.

As a preferred solution, the lengths of the first folding frame and the second folding frame are the same.

In order to solve the above technical problems, the present invention provides a vibration damping seat, which includes the above vibration damping device, and also includes a seat, a steering device, a mounting plate, a control unit and a damping unit,

The vibration damping device is installed inside the cushion of the seat;

the seat is mounted on the top surface of the mounting plate through the steering device;

The damping unit includes a piston cylinder filled with magnetorheological fluid, a fixed cylinder and a piston rod, the fixed cylinder is sleeved outside the piston cylinder; one end of the piston rod is vertically welded in the fixed cylinder, and the other end extends into the piston cylinder ; The top of the piston cylinder is welded with the bottom surface of the mounting plate;

The control unit includes:

A pressure sensor installed in the seat for receiving the pressure of the seat;

An information amplifier connected with the pressure sensor for amplifying and rectifying the information collected by the pressure sensor;

A single-chip unit that is connected to an information amplifier and used to receive the information collected by the pressure sensor, calculate the current control amount acting on the magnetorheological fluid according to the seat pressure information, and issue a control signal;

It is connected with the single-chip unit and the magnetorheological fluid respectively, and is used to convert the control signal of the single-chip microcomputer into a control current, and is a current driver for controlling the damping characteristics of the magnetorheological fluid.

As a preferred solution, there are four damping units and four control units respectively, and the damping units are respectively installed at the four corners of the mounting plate; the pressure sensors in the control unit are arranged at the four corners of the seat cushion, using The pressure at the four corners of the seat cushion is collected; the control unit controls the damping characteristics of the magnetorheological fluid in the corresponding damping unit according to the information collected by the corresponding pressure sensor.

As a preferred solution, a plurality of the vibration damping devices are provided, and the plurality of the vibration damping devices are equally spaced in the seat cushion.

In order to solve the above-mentioned technical problems, the present invention provides a vibration-damping vehicle, including the above-mentioned vibration-damping seat.

The utility model has the following beneficial effects:

(1) In the vibration damping device of the present utility model, if one support plate is used to receive the front pressure, such as the pressure of the occupants, the other support plate is used to receive the reverse pressure, such as the vibration transmitted from below; when there is pressure acting on the support plate When the two support plates are close together, the first folding frame and the second folding frame are folded outward at a certain angle, so that the spring is stretched, and the whole device is in a stable state, so as to achieve the effect of weakening and even shielding the vibration. Avoid transmission of vibrations to occupants.

(2) The damping seat of the present utility model is provided with a damping unit and a control unit, and the damping characteristics of the magnetorheological fluid in the damping unit are controlled by the control unit, so that the piston cylinder can slide up and down on the piston rod, so as to realize the anti-corrosion effect. The variable damping attenuation of vibration plays the first vibration reduction effect, and the entire vibration reduction structure is simple, the process is fast and compact, and can adapt to continuous vibration; and by installing the vibration reduction device into the seat, the second vibration reduction is realized, Double vibration damping, so that the occupants basically feel no vibration.

Description of drawings

1 is a schematic structural diagram of a vibration damping device provided by an embodiment of the present invention;

2 is a schematic structural diagram of a folding frame of a vibration damping device provided by an embodiment of the present invention;

3 is a schematic diagram of a seat structure provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the arrangement of the vibration damping device provided by the embodiment of the present invention.

Reference numerals: 1, support plate; 2, first folding frame; 3, second folding frame; 4, spring; 5, seat; 6, steering device; 7, mounting plate; 8, pressure sensor; 9, information Amplifier; 10. Single chip unit; 11. Current driver; 12. Piston cylinder; 13. Fixed cylinder; 14. Piston rod; 15. Vibration damping device; 16. Magnetorheological fluid.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

Referring to Figure 1 and Figure 2, a vibration damping device in a preferred embodiment of the present invention includes two oppositely arranged support plates 1, four folding frames and springs 4; Fixing groove; one end of the folding frame is installed in the fixing groove through the rotating shaft, and the other end is installed in the fixing groove on the other supporting plate 1 through the rotating shaft, so as to realize the symmetrical arrangement of the four folding frames, two of which are symmetrical to each other. A spring 4 is arranged between the folding frames; the folding frame includes a first folding frame 2 and a second folding frame 3, and the first folding frame 2 and the second folding frame 3 are connected by a rotating shaft.

Specifically, in the vibration damping device, if one support plate 1 is used to receive frontal pressure, such as the pressure of passengers, the other support plate 1 is used to receive negative pressure, such as vibration from below; when pressure acts on the support plate 1, the two support plates 1 are close together, causing the first folding frame 2 and the second folding frame 3 to be folded outward at a certain angle, so that the spring 4 is stretched, the whole device is in a stable state, and the vibration is weakened, Even the shielding effect prevents vibrations from being transmitted to the occupants.

In a preferred embodiment of the present invention, the support plate 1 is a square structure, and a reinforcing plate is arranged between the adjacent fixing grooves.

In a preferred embodiment of the present invention, the first folding frame 2 and the second folding frame 3 are respectively provided with U-shaped structures, the U-shaped structures are provided with sliding grooves, and the sliding grooves are provided with sliding bars , one end of the spring 4 is connected with a sliding rod on a folding frame, and the other end is connected with a sliding rod on a symmetrical folding frame.

In a preferred embodiment of the present invention, two ends of the folding frame are extended with a U-shaped structure perpendicular to the direction of the folding frame, a sliding slot is opened on the U-shaped structure, and a sliding rod is arranged on the One end of the spring 4 is connected with a sliding rod on a folding frame, and the other end is connected with a sliding rod on a symmetrical folding frame.

Specifically, by setting a plurality of U-shaped structures to open chutes, and arranging springs 4 on the chutes, the multi-point balance of the device can be achieved, so that the deformation range of the entire device can be larger, and the device can be adapted to greater pressure and vibration. , to ensure that the larger vibration is weakened and the vibration reduction effect is better.

In a preferred embodiment of the present invention, a locking device is provided on the sliding rod.

Specifically, through the locking device, the sliding rod can be fixed at a certain position of the chute, and the initial state of the spring 4, that is, the initial stretching degree, can be controlled, so as to control the deformation amount of the vibration damping device, so as to ensure that in practical application, considering To the influence of the passenger's own weight, the parameter of spring 4 is linked with the weight of the human body, so as to avoid the passenger's panic due to the sinking of the seat 5.

In a preferred embodiment of the present invention, the lengths of the first folding frame 2 and the second folding frame 3 are the same.

Example 2:

Referring to FIGS. 3 and 4 , a preferred embodiment of the present invention provides a vibration-damping seat, comprising the vibration-damping device 15 described in Embodiment 1, a seat 5 , a steering device 6 , a mounting plate 7 , a control unit and damping unit,

The vibration damping device 15 is installed inside the cushion of the seat 5;

The seat 5 is mounted on the top surface of the mounting plate 7 through the steering device 6;

The damping unit includes a piston cylinder 12 filled with magnetorheological fluid 16, a fixed cylinder 13 and a piston rod 14, the fixed cylinder 13 is sleeved outside the piston cylinder 12; one end of the piston rod 14 is vertically welded to the fixed cylinder 13 inside, the other end extends into the piston cylinder 12; the top end of the piston cylinder 12 is welded with the bottom surface of the mounting plate 7;

The control unit includes:

A pressure sensor 8 installed in the seat 5 for receiving the pressure of the seat 5;

An information amplifier 9 connected to the pressure sensor 8 for amplifying and rectifying the information collected by the pressure sensor 8;

A single-chip unit 10 that is connected to the information amplifier 9 and used to receive the information collected by the pressure sensor 8 and calculate the current control amount acting on the magnetorheological fluid 16 according to the pressure information of the seat 5, and issue a control signal. ;

The current driver 11 is connected to the single-chip unit 10 and the magnetorheological fluid 16 respectively, and is used for converting the control signal of the single-chip microcomputer into a control current and controlling the damping characteristics of the magnetorheological fluid 16 .

It should be noted that the vibration damping device 15 is arranged horizontally in the cushion of the seat 5, that is, the two support plates 1 of the vibration damping device 15 are placed horizontally, one receives the pressure of the occupant, and the other receives the vibration transmitted from bottom to top.

Specifically, when vibration occurs, the damping characteristic of the magnetorheological fluid 16 in the damping unit is controlled by the control unit, so that the piston cylinder 12 can slide up and down on the piston rod 14, so as to realize the variable damping attenuation of the vibration, and the The first vibration reduction effect is achieved, and the whole vibration reduction structure is simple, the process is fast and compact, and it can adapt to continuous vibration; and by installing the vibration reduction device 15 into the seat 5, the second vibration reduction and double vibration reduction are realized. The occupants hardly feel the vibration.

In a preferred embodiment of the present invention, four damping units and control units are respectively provided, and the damping units are respectively installed at the four corners of the mounting plate 7; the pressure sensors 8 in the control unit are provided with the seat 5. The four corners of the seat cushion are used to collect the pressure at the four corners of the seat 5. The control unit controls the damping characteristics of the magnetorheological fluid 16 in the corresponding damping unit according to the information collected by the corresponding pressure sensor 8.

Specifically, by collecting the pressure of the four corners of the seat 5 and controlling the damping units of the four corners at the same time, the vibration reduction of the four corners of the seat 5 is realized. It can deal with unevenly distributed vibration. For example, the wheel of one side of the vehicle is rolled against a stone and the vehicle is tilted. The vibration of the four corners of the seat 5 is different, so the four corners are controlled separately, and the vibration reduction effect is better.

In a preferred embodiment of the present invention, a plurality of the vibration damping devices 15 are provided, and the plurality of the vibration damping devices 15 are equally spaced in the cushion of the seat 5 .

Example 3:

A preferred embodiment of the present invention provides a vibration-damping vehicle, including the vibration-damping seat 5 described in the second embodiment.

Specifically, the vibration-damping vehicle is provided with a plurality of vibration-damping seats 5 , and the fixing cylinders 13 of the vibration-damping seats 5 are welded on the floor of the vehicle.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present invention, several improvements and replacements can be made. These improvements And replacement should also be regarded as the protection scope of the present invention.

Claims (10)

1. A vibration damping device characterized by: comprises two supporting plates, four folding frames and springs which are oppositely arranged; a fixing groove extends in the horizontal direction of the side surface of the supporting plate; one end of each folding frame is installed in the fixing groove through a rotating shaft, the other end of each folding frame is installed in the fixing groove of the other supporting plate through a rotating shaft, the four folding frames are symmetrically arranged in pairs, and springs are arranged between the two mutually-symmetrical folding frames; the folding frame comprises a first folding frame and a second folding frame, and the first folding frame is connected with the second folding frame through a rotating shaft.

2. The vibration damping device as claimed in claim 1, wherein the support plate has a square structure, and a reinforcing plate is disposed between adjacent fixing grooves.

3. The vibration damper according to claim 1, wherein the first folding frame and the second folding frame are respectively provided with a U-shaped structure, the U-shaped structures are provided with sliding grooves, the sliding grooves are provided with sliding rods, one end of the spring is connected with the sliding rod on one folding frame, and the other end of the spring is connected with the sliding rods on the symmetrical folding frames.

4. The vibration damper according to claim 3, wherein the two ends of the folding frame extend perpendicularly to the direction of the folding frame to form a U-shaped structure, the U-shaped structure is provided with a sliding groove, a sliding rod is arranged on the sliding groove, one end of the spring is connected with the sliding rod on one folding frame, and the other end of the spring is connected with the sliding rod on the symmetrical folding frame.

5. The vibration damping device as set forth in claim 4, wherein a locking device is provided on the slide rod.

6. The vibration damping device according to claim 2, wherein the first folding leg and the second folding leg have the same length.

7. A vibration damping seat is characterized by comprising the vibration damping device as described in any one of 1-6, a seat, a steering device, a mounting plate, a control unit and a damping unit,

the vibration damper is arranged inside a cushion of the seat;

the seat is arranged on the top surface of the mounting plate through a steering device;

the damping unit comprises a piston cylinder filled with magnetorheological fluid, a fixed cylinder and a piston rod, and the fixed cylinder is sleeved outside the piston cylinder; one end of the piston rod is vertically welded in the fixed cylinder, and the other end of the piston rod extends into the piston cylinder; the top end of the piston cylinder is welded with the bottom surface of the mounting plate;

the control unit includes:

a pressure sensor installed in the seat for receiving a pressure of the seat;

the information amplifier is connected with the pressure sensor and used for amplifying and rectifying the information acquired by the pressure sensor;

the single chip microcomputer unit is connected with the information amplifier and used for receiving the information acquired by the pressure sensor, calculating the current control quantity acting on the magnetorheological fluid according to the seat pressure information and sending a control signal;

and the current driver is respectively connected with the single chip microcomputer unit and the magnetorheological fluid and is used for converting the single chip microcomputer control signal into control current and controlling the damping characteristic of the magnetorheological fluid.

8. The vibration damping seat according to claim 7, wherein the damping units and the control units are respectively provided with four, and the damping units are respectively arranged at four corners of the mounting plate; the pressure sensors in the control unit are arranged at four corners of the seat cushion and used for collecting the pressure at the four corners of the seat cushion; and the control unit controls the damping characteristics of the magnetorheological fluid in the corresponding damping unit according to the information acquired by the corresponding pressure sensor.

9. The vibration damping seat according to claim 7, wherein a plurality of vibration damping devices are provided, and the plurality of vibration damping devices are laid in the seat cushion at equal intervals.

10. A vibration damping vehicle comprising a vibration damping seat as claimed in any one of claims 7 to 9.

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