CN215720442U

CN215720442U - Shock absorber with lifting function

Info

Publication number: CN215720442U
Application number: CN202121952268.7U
Authority: CN
Inventors: 刘小娟; 宋锐; 秦宝星
Original assignee: Shanghai Gaussian Automation Technology Development Co Ltd
Current assignee: Shanghai Gaussian Automation Technology Development Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-01
Anticipated expiration: 2031-08-19

Abstract

The utility model discloses a shock absorber with a lifting function, which belongs to the technical field of shock absorption and comprises an oil storage cylinder, a dust cover, a piston rod, a piston and a shock absorption pad, wherein an oil cavity is formed in the oil storage cylinder; the piston rod is connected with the oil storage cylinder in a sliding mode, the bottom end of the piston rod is located in the oil cavity, and the top end of the piston rod penetrates through the closed space and is fixedly connected with the movable portion; the piston is located the oil pocket, and the piston is connected with the piston rod and with the inner wall sliding connection of oil pocket, and the damping pad is located airtight space and sliding sleeve locates on the piston rod. When lifting is needed, oil or gas is filled into the closed space, and the pressure of the oil or the gas enables the movable part to move relative to the fixed part, so that the piston rod is driven to lift, and lifting is achieved; utilize the dust cover to form airtight space, collect and lift and reduce vibration in an organic whole for overall structure is compact.

Description

Shock absorber with lifting function

Technical Field

The utility model relates to the technical field of vibration reduction, in particular to a vibration reducer with a lifting function.

Background

With the development of the automobile industry, the requirements of consumers on automobiles are higher and higher. The application of the shock absorber is ubiquitous, but the principle of the conventional shock absorber is that the hydraulic cylinder absorbs the received impact energy by damping of liquid, and basically only has a shock absorbing function.

The applied environment of shock absorber is various, in order to prevent inside grains of sand and the dust gets into the shock absorber, generally can set up the dirt proof boot outside the shock absorber, and the dirt proof boot is established on arranging the pneumatic cylinder, occupies great space, and the function is single.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a shock absorber with a lifting function, and aims to solve the technical problem that the functions of the shock absorber and a dustproof sleeve are single in the prior art.

As the conception, the technical scheme adopted by the utility model is as follows:

a shock absorber with a lifting function, comprising:

the oil storage cylinder is internally provided with an oil cavity;

the dust cover comprises a fixed part and a movable part, the fixed part is fixedly connected with the oil storage cylinder, the movable part is in sliding connection with the fixed part, and a closed space is formed between the fixed part and the sliding part;

the piston rod is connected with the oil storage cylinder in a sliding mode, the bottom end of the piston rod is located in the oil cavity, and the top end of the piston rod penetrates through the closed space and is fixedly connected with the movable portion;

the piston is positioned in the oil cavity, and is connected with the piston rod and is in sliding connection with the inner wall of the oil cavity;

and the vibration damping pad is positioned in the closed space and is sleeved on the piston rod in a sliding manner.

Wherein the movable portion includes:

the fixing part is positioned in the cylinder and is in sliding connection with the cylinder;

the cover plate is fixed at the top end of the cylinder, the piston rod penetrates through the fixing portion and the cover plate, and the piston rod is fixedly connected with the cover plate.

Wherein, the apron pass through gland nut with the piston rod is connected, the piston rod includes:

a main body portion;

the first thread part is arranged at the top end of the main body part, a first step is formed at the junction of the first thread part and the main body part, the cover plate is lapped on the first step, and the compression nut is in threaded connection with the first thread part and tightly abuts against the cover plate.

The cover plate is provided with a groove, and the compression nut is located in the groove.

Wherein, the piston pass through lock nut with the piston rod is connected, the piston rod still includes:

the second thread part is arranged at the bottom end of the main body part, a second step is formed at the junction of the second thread part and the main body part, the piston is sleeved on the second thread part, and the locking nut is located on the lower side of the piston and in threaded connection with the second thread part.

The cylinder is a cylindrical cylinder, and the fixing part and the cover plate are both disc-shaped.

The fixing part comprises a middle plate and a baffle arranged around the circumference of the middle plate, the barrel is sleeved outside the baffle, and the piston rod penetrates through the middle plate.

And the cover plate is provided with a fluid through hole, and the fluid through hole is communicated with the closed space.

Wherein, be provided with first sealing washer between fixed part with the movable part.

The piston rod is characterized by further comprising an elastic limiting block, the elastic limiting block is located in the oil cavity and sleeved on the piston rod, and the elastic limiting block is located above the piston.

The utility model has the beneficial effects that:

when the shock absorber with the lifting function needs to be lifted, oil or gas is filled into the closed space, and the pressure of the oil or the gas enables the movable part to move relative to the fixed part, so that the piston rod is driven to lift, and the lifting is realized; when the piston rod is impacted or vibrated, the piston rod moves downwards, and the oil pressure in the oil cavity of the oil storage cylinder acts on the piston to form damping so as to reduce vibration; the damping pad sets up for the movable part can not bump the fixed part when descending, therefore the damping pad not only has limit function, also plays buffering damping effect.

The shock absorber with the lifting function provided by the utility model utilizes the dust cover to form a closed space, integrates lifting and shock absorption, has a compact integral structure, small volume and small occupied space, and can be suitable for various working conditions.

Drawings

FIG. 1 is a schematic structural diagram of a shock absorber with a lifting function according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a schematic structural diagram of a piston rod provided in an embodiment of the present invention;

fig. 4 is a sectional view of a damper with a lifting function according to a second embodiment of the present invention.

In the figure:

10. a reserve tube; 11. an oil chamber;

20. a dust cover; 200. sealing the space; 21. a fixed part; 211. a middle plate; 212. a baffle plate; 22. a movable portion; 221. a barrel; 222. a cover plate; 223. a fluid via;

30. a piston rod; 31. a main body portion; 32. a first threaded portion; 33. a second threaded portion; 34. a card slot;

40. a piston;

50. a vibration damping pad;

60. a compression nut;

70. locking the nut;

80. an elastic limiting block;

91. a first seal ring; 92. a second seal ring; 93. and a third sealing ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example one

Referring to fig. 1 to 3, an embodiment of the present invention provides a shock absorber with a lifting function, which is suitable for a vehicle with a lifting function and other components with a lifting function.

The shock absorber with the lifting function comprises a reserve tube 10, a dust cover 20, a piston rod 30, a piston 40 and a shock absorption pad 50, wherein an oil chamber 11 is formed inside the reserve tube 10, the dust cover 20 comprises a fixed part 21 and a movable part 22, the fixed part 21 is fixedly connected with the reserve tube 10, the movable part 22 is slidably connected with the fixed part 21, and a closed space 200 is formed between the fixed part 21 and the sliding part; the piston rod 30 is connected with the oil storage cylinder 10 in a sliding mode, the bottom end of the piston rod 30 is located in the oil cavity 11, and the top end of the piston rod 30 penetrates through the closed space 200 and is fixedly connected with the movable portion 22; the piston 40 is located in the oil chamber 11, the piston 40 is connected with the piston rod 30 and slidably connected with the inner wall of the oil chamber 11, and the damping pad 50 is located in the closed space 200 and slidably sleeved on the piston rod 30.

When lifting is needed, oil or gas is filled into the closed space 200, and the pressure of the oil or gas makes the movable part 22 move relative to the fixed part 21, so as to drive the piston rod 30 to lift, thereby realizing lifting; when the piston rod 30 moves downwards when impact or vibration is received, the oil pressure in the oil storage cylinder 10 acts on the piston 40 to form damping, and the vibration is reduced; the damping pad 50 is provided so that the movable portion 22 does not collide with the fixed portion 21 when descending, and thus the damping pad 50 not only has a limiting function, but also plays a role in damping and buffering.

According to the shock absorber with the lifting function, the dust cover 20 is utilized to form the closed space 200, the lifting and the shock absorption are integrated, the overall structure is compact, the size is small, the occupied space is small, and the shock absorber with the lifting function can be suitable for various working conditions.

Where reserve tube 10 is of conventional construction, it is prior art that reserve tube 10 is capable of damping piston rod 30.

In the present embodiment, the dust cover 20 not only has a dust-proof function but also can perform a lifting function.

The movable portion 22 includes a cylinder 221 and a cover plate 222, the fixed portion 21 is located in the cylinder 221 and slidably connected to the cylinder 221, the cover plate 222 is fixed to the top end of the cylinder 221, the piston rod 30 passes through the fixed portion 21 and the cover plate 222, and the piston rod 30 is fixedly connected to the cover plate 222.

A closed space 200 is enclosed among the fixing part 21, the cylinder 221 and the cover plate 222, a fluid through hole 223 is formed in the cover plate 222, and the fluid through hole 223 is communicated with the closed space 200 and is used for introducing oil or gas into the closed space 200.

When lifting is needed, oil or gas is filled into the closed space 200, and the cover plate 222 moves upwards under the pressure of the oil or gas, so that the piston rod 30 is driven to lift; during the lifting process, the cylinder 221 slides relative to the fixing portion 21, and the length of the cylinder 221 is such that the fixing portion 21 does not disengage from the cylinder 221.

In this embodiment, the cylinder 221 is a cylindrical cylinder, and the fixing portion 21 and the cover plate 222 are both disc-shaped, so as to facilitate manufacturing and assembly.

A first sealing ring 91 is arranged between the fixed part 21 and the movable part 22, and specifically, the first sealing ring 91 is located between the inner wall of the cylinder 221 and the outer wall of the fixed part 21. A second seal 92 is provided between the fixing portion 21 and the piston rod 30, and a third seal 93 is provided between the cover plate 222 and the piston rod 30. The first seal ring 91, the second seal ring 92 and the third seal ring 93 all play a sealing role, and prevent oil or gas in the closed space 200 from leaking.

Specifically, the piston rod 30 includes a main body portion 31, a first screw portion 32, and a second screw portion 33, the first screw portion 32 being provided at a top end of the main body portion 31, the second screw portion 33 being provided at a bottom end of the main body portion 31, the main body portion 31 being pierced through the reserve cylinder 10, the fixing portion 21, and the cover plate 222.

The cover plate 222 is connected to the piston rod 30 by the compression nut 60. The first step is formed at the boundary of the first thread part 32 and the main body part 31, the cover plate 222 is lapped on the first step, and the compression nut 60 is in threaded connection with the first thread part 32 and tightly abuts against the cover plate 222. The first step limits one end of the cover plate 222, and the compression nut 60 limits the other end of the cover plate 222.

The cover plate 222 is provided with a groove, and the compression nut 60 is positioned in the groove, so that the space is fully facilitated, the axial length is reduced, and the structure is compact and the size is small.

The piston 40 is connected to the piston rod 30 by a lock nut 70. The second step is formed at the boundary of the second thread part 33 and the main body part 31, the piston 40 is sleeved on the second thread part 33, and the lock nut 70 is located at the lower side of the piston 40 and is in threaded connection with the second thread part 33. The second step limits one end of the piston 40, and the locking nut 70 limits the other end of the piston 40.

The shock absorber with the lifting function further comprises an elastic limiting block 80, the elastic limiting block 80 is located in the oil cavity 11 and sleeved on the piston rod 30, and the elastic limiting block 80 is located above the piston 40.

When the piston rod 30 rises, the elastic stopper 80 can prevent the piston 40 from hitting the top wall of the oil chamber 11, and protect the piston 40.

Specifically, the elastic stopper 80 is spaced apart from the piston 40. The piston rod 30 is provided with a clamping groove 34, the clamping groove 34 and the second step are arranged at intervals, the elastic limiting block 80 is sleeved on the piston rod 30, and the elastic limiting block 80 can be limited by arranging an elastic washer in the clamping groove 34.

Example two

Fig. 4 shows a second embodiment, wherein the same or corresponding parts as in the first embodiment are provided with the same reference numerals as in the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference is that the fixing portion 21 includes an intermediate plate 211 and a baffle 212 wound around the intermediate plate 211, and the cylinder 221 is sleeved outside the baffle 212, so as to increase the contact area between the cylinder 221 and the fixing portion 21 and ensure the sealing performance of the enclosed space 200.

Specifically, the piston rod 30 passes through the intermediate plate 211, and the first seal ring 91 is located between the baffle 212 and the cylinder 221.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A shock absorber with a lifting function, comprising:

an oil reservoir cylinder (10) having an oil chamber (11) formed therein;

a dust cover (20) including a fixed portion (21) and a movable portion (22), the fixed portion (21) being fixedly connected to the reserve tube (10), the movable portion (22) being slidably connected to the fixed portion (21), a sealed space (200) being formed between the fixed portion (21) and the sliding portion;

the piston rod (30) is connected with the oil storage cylinder (10) in a sliding mode, the bottom end of the piston rod (30) is located in the oil cavity (11), and the top end of the piston rod (30) penetrates through the closed space (200) and is fixedly connected with the movable portion (22);

the piston (40) is positioned in the oil cavity (11), and the piston (40) is connected with the piston rod (30) and is in sliding connection with the inner wall of the oil cavity (11);

and the damping pad (50) is positioned in the closed space (200) and is sleeved on the piston rod (30) in a sliding manner.

2. Shock absorber with lifting function according to claim 1, characterized in that said movable part (22) comprises:

the fixing part (21) is positioned in the cylinder (221) and is connected with the cylinder (221) in a sliding manner;

the cover plate (222) is fixed at the top end of the cylinder (221), the piston rod (30) penetrates through the fixing portion (21) and the cover plate (222), and the piston rod (30) is fixedly connected with the cover plate (222).

3. Shock absorber with lifting function according to claim 2, wherein said cover plate (222) is connected with said piston rod (30) by a compression nut (60), said piston rod (30) comprising:

a main body (31);

the first thread part (32) is arranged at the top end of the main body part (31), a first step is formed at the junction of the first thread part (32) and the main body part (31), the cover plate (222) is lapped on the first step, and the compression nut (60) is in threaded connection with the first thread part (32) and tightly abuts against the cover plate (222).

4. The shock absorber with lifting function as claimed in claim 3, wherein the cover plate (222) is provided with a groove, and the compression nut (60) is located in the groove.

5. Shock absorber with lifting function according to claim 3, wherein said piston (40) is connected with said piston rod (30) by means of a lock nut (70), said piston rod (30) further comprising:

the second thread part (33) is arranged at the bottom end of the main body part (31), a second step is formed at the junction of the second thread part (33) and the main body part (31), the piston (40) is sleeved on the second thread part (33), and the locking nut (70) is positioned on the lower side of the piston (40) and is in threaded connection with the second thread part (33).

6. The damper with lifting function according to claim 2, wherein the cylinder (221) is a cylindrical cylinder, and the fixing portion (21) and the cover plate (222) are each disc-shaped.

7. The damper with a lifting function according to claim 2, wherein the fixing portion (21) includes an intermediate plate (211) and a baffle plate (212) disposed around a circumference of the intermediate plate (211), the cylinder (221) is sleeved outside the baffle plate (212), and the piston rod (30) passes through the intermediate plate (211).

8. The shock absorber with lifting function as claimed in claim 2, wherein the cover plate (222) is provided with a fluid through hole (223), and the fluid through hole (223) is communicated with the closed space (200).

9. Shock absorber with lifting function according to any of claims 1-8, characterized in that a first sealing ring (91) is arranged between the fixed part (21) and the movable part (22).

10. The shock absorber with lifting function as claimed in any one of claims 1 to 8, further comprising an elastic limiting block (80), wherein the elastic limiting block (80) is located in the oil chamber (11) and sleeved on the piston rod (30), and the elastic limiting block (80) is located above the piston (40).