CN202251633U - Gas spring - Google Patents
Gas spring Download PDFInfo
- Publication number
- CN202251633U CN202251633U CN2011203622893U CN201120362289U CN202251633U CN 202251633 U CN202251633 U CN 202251633U CN 2011203622893 U CN2011203622893 U CN 2011203622893U CN 201120362289 U CN201120362289 U CN 201120362289U CN 202251633 U CN202251633 U CN 202251633U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston rod
- annular bulge
- gas spring
- dirt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Sealing Devices (AREA)
Abstract
The utility model discloses a gas spring, which comprises a cylinder body and a piston rod. A front annular bulge and a back annular bulge are arranged in the cylinder body in parallel, a dustproof sleeve is arranged at a connection part of the end inner side of the cylinder body and the piston rod and located through the front bulge; a guiding sleeve, an oil seal and a spacer are sequentially arranged between the front annular bulge and the back annular bulge; and the outer diameter of the cylinder body is 22mm, the outer diameter of the dustproof sleeve is 19mm, and the outer diameter of the piston rod is 10mm. The dustproof sleeve is arranged at the connecting part of the end inner side of the cylinder body and the piston rod and is located by the front annular bulge arranged in the cylinder body, and the front annular bulge and the dustproof sleeve are matched mutually, thus dust can be effectively prevented from entering the interior of the gas spring, and the service life of the gas spring is prolonged; in addition, the guiding sleeve, the oil seal and the spacer are sequentially arranged between the front annular bulge and the back annular bulge, thus the sealing performance of the gas spring is better; and compared with the prior art, the gas spring disclosed by the utility model has the advantages of convenience for using and long service life.
Description
Technical field
The utility model relates to the auto parts machinery field, relates in particular to a kind of air spring.
Background technique
The working principle of air spring is in airtight pressure cylinder, to charge into inert gas or gas mixture; Make the pressure in the cavity be higher than atmospheric several times or tens times, thereby the pressure difference that the cross-section area that utilizes piston rod produces less than the cross-section area of piston realize the motion of piston rod.In the piston rod movement process, the impurity such as dust that will cover are above that easily brought air spring inside into, will damage inner Sealing like this, and inner lubricant oil was lost efficacy, and have influenced its working life, make troubles to use.
The model utility content
The purpose of the utility model is to address the above problem, and a kind of air spring is provided, and its good seal performance can prevent impurity entering air spring inside such as dust, has the advantage of easy to use and long service life.
The purpose of the utility model is to realize through following technological scheme:
A kind of air spring comprises cylinder body, piston rod, two annular protrusions before and after said cylinder interior laterally arranges; The inboard junction point with piston rod of said cylinder ends is provided with dirt-proof boot; Said dirt-proof boot sets gradually guide sleeve, oil sealing, pad through preceding protruding location between two convexities of said front and back, and the external diameter of said cylinder body is 22mm; The external diameter of said dirt-proof boot is 19mm, and the external diameter of said piston rod is 10mm.
Said dirt-proof boot is a boot seal.
The beneficial effect of the utility model is: through being provided with dirt-proof boot at the inboard junction point with piston rod of cylinder ends; And the annular protrusion that passes through the cylinder interior setting is located; Annular protrusion and dirt-proof boot cooperatively interact; It is inner to prevent effectively that dust from getting into air spring, has prolonged the working life of air spring; Through between two convexities of front and back, setting gradually guide sleeve, oil sealing, pad, make the better tightness of air spring, the contrast existing technology, this air spring has the advantage of easy to use and long service life.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of the described air spring of the utility model.
Among the figure:
1, cylinder body; 2, piston rod; 3, convexity; 4, dirt-proof boot; 5, guide sleeve; 6, oil sealing; 7, pad.
Embodiment
Among the embodiment as shown in Figure 1, the described air spring of the utility model, two annular protrusions 3 before and after cylinder body 1 inside laterally arranges; The inboard junction point with piston rod 2 in cylinder body 1 end is provided with boot seal 4; Dirt-proof boot 4 sets gradually guide sleeve 5, oil sealing 6, pad 7 through preceding protruding 3 location between the said front and back two protruding 3, and wherein the external diameter of cylinder body 1 is 22mm; The external diameter of dirt-proof boot 4 is 19mm, and the external diameter of piston rod 2 is 10mm.
Claims (2)
1. air spring; Comprise cylinder body (1), piston rod (2), it is characterized in that, two annular protrusions (3) before and after said cylinder body (1) inside laterally arranges; The inboard junction point with piston rod (2) in said cylinder body (1) end is provided with dirt-proof boot (4); Said dirt-proof boot (4) sets gradually guide sleeve (5), oil sealing (6), pad (7) through preceding convexity (3) location between said front and back two convexities (3), the external diameter of said cylinder body (1) is 22mm; The external diameter of said dirt-proof boot (4) is 19mm, and the external diameter of said piston rod (2) is 10mm.
2. air spring according to claim 1 is characterized in that, said dirt-proof boot (4) is a boot seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203622893U CN202251633U (en) | 2011-09-26 | 2011-09-26 | Gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203622893U CN202251633U (en) | 2011-09-26 | 2011-09-26 | Gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251633U true CN202251633U (en) | 2012-05-30 |
Family
ID=46112879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203622893U Expired - Lifetime CN202251633U (en) | 2011-09-26 | 2011-09-26 | Gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434614A (en) * | 2011-09-26 | 2012-05-02 | 无锡诤烨气动器件有限公司 | Gas spring |
| EP3646982A1 (en) * | 2018-10-16 | 2020-05-06 | Doceram GmbH | Welding electrode |
-
2011
- 2011-09-26 CN CN2011203622893U patent/CN202251633U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434614A (en) * | 2011-09-26 | 2012-05-02 | 无锡诤烨气动器件有限公司 | Gas spring |
| EP3646982A1 (en) * | 2018-10-16 | 2020-05-06 | Doceram GmbH | Welding electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |