CN214999065U

CN214999065U - Air damper for vehicle

Info

Publication number: CN214999065U
Application number: CN202121173907.XU
Authority: CN
Inventors: 方登; 牛勇; 吴滔; 刘桂琳
Original assignee: Henan Science And Technology Co ltd
Current assignee: Henan Science And Technology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-03
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses an air damper for vehicles, which comprises a damping cylinder body, a piston rod matched with the damping cylinder body and a piston disc; an outer sleeve is arranged outside the damping cylinder body, and a closed cavity is formed between the outer sleeve and the outer wall of the damping cylinder body; four vertical clapboards are arranged in the closed cavity to divide the closed cavity into a left closed cavity and a right closed cavity; the side wall of the lower part of the damping cylinder body is provided with a plurality of lower damping holes for communicating the left cavity and the lower part of the damping cylinder body, the side wall of the upper part of the damping cylinder body is provided with a plurality of upper damping holes for communicating the right cavity and the upper part of the damping cylinder body, and the lower damping holes and the upper damping holes are vertically arranged; an upper through hole for communicating the upper part of the damping cylinder body with the left cavity is formed in the side wall of the upper part of the damping cylinder body, and an upper check valve is arranged in the upper through hole; and a lower through hole for communicating the lower part of the damping cylinder body with the right cavity is formed in the side wall of the lower part of the damping cylinder body, and a lower check valve is arranged in the lower through hole.

Description

Air damper for vehicle

Technical Field

The utility model belongs to the technical field of the automobile shock attenuation, concretely relates to workshop air damper.

Background

The shock absorber is used for inhibiting the shock when the spring absorbs the shock and rebounds and the impact from the road surface. The damping device is widely applied to automobiles and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the driving smoothness of the automobiles. When the automobile runs on a rough road surface, although the shock absorption spring can filter the shock of the road surface, the spring can still do reciprocating motion, the shock absorber is used for inhibiting the spring from jumping, the rebound of the spring cannot be controlled without the shock absorber, the automobile can generate serious bounce when running on the rough road surface, and the tire grip force and the tracking property can be lost due to the up-and-down shock of the spring when the automobile runs over a curve. The air damper is a damper for damping by compressed air, has the advantages of low noise, long service life and the like, and is widely applied.

After the existing air shock absorber is produced and processed, air damping is inconvenient to fix, and the damping of a piston cannot be adjusted according to the vibration amplitude of a vehicle, so that the shock absorption effect is limited. In addition, the shock absorber has the problems of poor shock absorption effect and single shock absorption mode.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model discloses a following technical scheme:

an air damper for a vehicle comprises a damping cylinder body, a piston rod matched with the damping cylinder body and a piston disc which is positioned in the damping cylinder body and connected to the lower end of the piston rod; an outer sleeve is arranged outside the damping cylinder body, and a closed cavity is formed between the outer sleeve and the outer wall of the damping cylinder body; four vertical partition plates are arranged in the closed cavity to divide the closed cavity into a left closed cavity and a right closed cavity which are respectively positioned on the left side and the right side; the damping cylinder body is characterized in that a plurality of lower damping holes for communicating a left chamber with the lower part of the damping cylinder body are formed in the side wall of the lower part of the damping cylinder body, a plurality of upper damping holes for communicating a right chamber with the upper part of the damping cylinder body are formed in the side wall of the upper part of the damping cylinder body, and the lower damping holes and the upper damping holes are vertically arranged; an upper through hole for communicating the upper part of the damping cylinder body with the left cavity is formed in the side wall of the upper part of the damping cylinder body, and an upper one-way valve for feeding air into the damping cylinder body is arranged in the upper through hole; and a lower through hole for communicating the lower part of the damping cylinder body with the right cavity is formed in the side wall of the lower part of the damping cylinder body, and a lower one-way valve for introducing air into the damping cylinder body is arranged in the lower through hole.

Furthermore, a fixing plate is arranged at the upper end of the piston rod, a damping spring surrounding the piston rod is arranged between the fixing plate and the damping cylinder body, and two ends of the damping spring are respectively fixed on the fixing plate and the damping cylinder body.

Furthermore, the fixed plate and the outer sleeve are externally covered with a dust cover with a downward opening; an air bag is arranged between the dust cover and the fixing plate; the upper edge of the outer sleeve is provided with an upper limiting ring, the lower end of the dust cover is provided with a lower limiting ring matched with the upper limiting ring, a gap is reserved between the lower limiting ring and the outer wall of the outer sleeve, and the upper limiting ring is connected with the inner wall of the dust cover in a sliding mode.

Furthermore, evenly inlay on the lateral wall of upper limit ring and be equipped with a plurality of ball, be provided with on the dust cover inner wall with ball complex vertical chute.

Further, an annular rubber pad is arranged on the upper surface of the lower limiting ring.

Further, the bottom of shock attenuation cylinder body is provided with the mounting panel, the upper surface of dust cover and all be provided with the collar on the lower surface of mounting panel.

The utility model has the advantages that: the utility model discloses be provided with a plurality of upper damping hole and lower damping hole of vertical arrangement, when the piston dish reciprocated, the vibration range was different, the number that the piston dish sheltered from was gone up the damping hole and was gone down the damping hole is different, that is to say when the vibration range is great, the number of sheltering from going up the damping hole or going down the damping hole is less, therefore the resistance that the piston dish received is less, when the vibration range is great, the number of upper damping hole or lower damping hole that sheltered from is more, therefore the resistance that the piston received is great, play good shock attenuation effect; in addition, the air bag is added to further enhance the damping effect of the damper; the utility model discloses be provided with the dust cover, can effectively reduce the external environment to the corruption of gasbag, damping spring etc. has increased the life of bumper shock absorber.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the present invention in the direction A-A;

reference numerals: 1-a dust cover; 2-mounting a ring; 3-air bag; 4, fixing a plate; 5-a vertical chute; 6-damping spring; 7-a piston rod; 8-a damping cylinder body; 9-a piston disc; 10-upper damping holes; 11-an outer sleeve; 12-lower damping orifice; 13-left chamber; 14-a right chamber; 15-upper through holes; 16-an upper one-way valve; 17-a lower via; 18-lower one-way valve; 19-a lower limiting ring; 20-upper confinement ring; 21-a ball; 22-a mounting plate; 23-a separator; 24-ring rubber pad.

Detailed Description

The technical solution of the present invention will be further described with reference to the accompanying drawings and examples. As shown in fig. 1-2, the air damper for vehicle of the present invention comprises a damping cylinder 8, a piston rod 7 engaged with the damping cylinder 8, and a piston disc 9 located inside the damping cylinder 8 and connected to the lower end of the piston rod 7; an outer sleeve 11 is arranged outside the damping cylinder body 8, and a closed cavity is formed between the outer sleeve 11 and the outer wall of the damping cylinder body 8; four vertical partition plates 23 are arranged in the closed cavity to divide the closed cavity into a left closed cavity 13 and a right closed cavity 14 which are respectively positioned on the left side and the right side.

A plurality of lower damping holes 12 for communicating a left chamber 13 with the lower part of the damping cylinder 8 are formed in the side wall of the lower part of the damping cylinder 8, a plurality of upper damping holes 10 for communicating a right chamber 14 with the upper part of the damping cylinder 8 are formed in the side wall of the upper part of the damping cylinder 8, and the lower damping holes 12 and the upper damping holes 10 are vertically arranged; an upper through hole 15 for communicating the upper part of the damping cylinder body 8 with the left chamber 13 is formed in the side wall of the upper part of the damping cylinder body 8, and an upper one-way valve 16 for feeding air into the damping cylinder body 8 is arranged in the upper through hole 15; and a lower through hole 17 for communicating the lower part of the damping cylinder body 8 with the right cavity 14 is formed in the side wall of the lower part of the damping cylinder body 8, and a lower one-way valve 18 for introducing air into the damping cylinder body 8 is arranged in the lower through hole 17. When the piston disc moves downwards, air at the lower part of the piston disc of the damping cylinder body enters the left cavity from the lower damping hole and enters the upper part of the piston disc of the damping cylinder body from the upper through hole; when the piston disc moves upwards, air on the upper part of the piston disc of the damping cylinder body enters the right cavity from the upper damping hole and enters the lower part of the piston disc of the damping cylinder body from the lower through hole; when the vibration amplitudes of the piston discs are different, the movement damping of the piston discs is smaller when the vibration amplitudes are smaller, and is larger when the vibration amplitudes are larger. Therefore, the damping value of the utility model can be changed according to the vibration amplitude.

The upper end of piston rod 7 is provided with fixed plate 4, be provided with between fixed plate 4 and the damping cylinder body 8 and encircle damping spring 6 of piston rod 7, damping spring 6's both ends are fixed respectively on fixed plate 4 and on the damping cylinder body 8. The fixed plate 4 and the outer sleeve 11 are externally covered with a dust cover 1 with a downward opening; an air bag 3 is arranged between the dust cover 1 and the fixing plate 4; an upper limiting ring 20 is arranged at the upper edge of the outer sleeve 11, a lower limiting ring 19 matched with the upper limiting ring 20 is arranged at the lower end of the dust cover 1, a gap is reserved between the lower limiting ring 19 and the outer wall of the outer sleeve 11, and the upper limiting ring 20 is connected with the inner wall of the dust cover 1 in a sliding mode. A plurality of balls 21 are uniformly embedded in the side wall of the upper limiting ring 20, and vertical sliding grooves 5 matched with the balls 21 are formed in the inner wall of the dust cover 1. An annular rubber pad 24 is arranged on the upper surface of the lower limiting ring 19. The bottom of shock attenuation cylinder body 8 is provided with mounting panel 22, the upper surface of dust cover 1 and all be provided with collar 2 on the lower surface of mounting panel 22. The utility model discloses add the gasbag, can further strengthen the utility model discloses a shock attenuation effect. Additionally, the utility model discloses be provided with the dust cover and can prevent the corruption of external environment to gasbag and shock attenuation cylinder body. The upper limiting ring and the lower limiting ring are arranged to prevent the dust cover from sliding and falling off when the dust cover moves. Just the utility model discloses be provided with the ball, when the dust cover reciprocated, the ball can effectively reduce the frictional force of removal.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An air damper for a vehicle, characterized in that: comprises a damping cylinder body (8), a piston rod (7) matched with the damping cylinder body (8) and a piston disc (9) which is positioned in the damping cylinder body (8) and connected to the lower end of the piston rod (7); an outer sleeve (11) is arranged outside the damping cylinder body (8), and a closed cavity is formed between the outer sleeve (11) and the outer wall of the damping cylinder body (8); four vertical partition plates (23) are arranged in the closed cavity to divide the closed cavity into a left closed cavity (13) and a right closed cavity (14) which are respectively positioned on the left side and the right side; the damping cylinder is characterized in that a plurality of lower damping holes (12) used for communicating a left chamber (13) and the lower part of the damping cylinder (8) are formed in the side wall of the lower part of the damping cylinder (8), a plurality of upper damping holes (10) used for communicating a right chamber (14) and the upper part of the damping cylinder (8) are formed in the side wall of the upper part of the damping cylinder (8), and the lower damping holes (12) and the upper damping holes (10) are vertically arranged;

an upper through hole (15) used for communicating the upper part of the damping cylinder body (8) with the left chamber (13) is formed in the side wall of the upper part of the damping cylinder body (8), and an upper one-way valve (16) used for introducing air into the damping cylinder body (8) is arranged in the upper through hole (15); and a lower through hole (17) for communicating the lower part of the damping cylinder body (8) with the right cavity (14) is formed in the side wall of the lower part of the damping cylinder body (8), and a lower one-way valve (18) for introducing air into the damping cylinder body (8) is arranged in the lower through hole (17).

2. The air damper for vehicle according to claim 1, wherein: the damping mechanism is characterized in that a fixing plate (4) is arranged at the upper end of the piston rod (7), a damping spring (6) surrounding the piston rod (7) is arranged between the fixing plate (4) and the damping cylinder body (8), and two ends of the damping spring (6) are fixed on the fixing plate (4) and the damping cylinder body (8) respectively.

3. An air damper for vehicles according to claim 2, wherein: the fixed plate (4) and the outer sleeve (11) are externally covered with a dust cover (1) with a downward opening; an air bag (3) is arranged between the dust cover (1) and the fixing plate (4); the dustproof cover is characterized in that an upper limiting ring (20) is arranged on the upper edge of the outer sleeve (11), a lower limiting ring (19) matched with the upper limiting ring (20) is arranged at the lower end of the dustproof cover (1), a gap is reserved between the lower limiting ring (19) and the outer wall of the outer sleeve (11), and the upper limiting ring (20) is connected with the inner wall of the dustproof cover (1) in a sliding mode.

4. An air damper for vehicles according to claim 3, wherein: evenly inlay on the lateral wall of last spacing ring (20) and be equipped with a plurality of ball (21), be provided with on dust cover (1) inner wall with ball (21) complex vertical spout (5).

5. An air damper for vehicles according to claim 3, wherein: an annular rubber pad (24) is arranged on the upper surface of the lower limiting ring (19).

6. An air damper for vehicles according to claim 3, wherein: the bottom of shock attenuation cylinder body (8) is provided with mounting panel (22), the upper surface of dust cover (1) and all be provided with collar (2) on the lower surface of mounting panel (22).