CN202251629U - Air spring by adopting dual sealing structures - Google Patents

Air spring by adopting dual sealing structures Download PDF

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Publication number
CN202251629U
CN202251629U CN2011203623129U CN201120362312U CN202251629U CN 202251629 U CN202251629 U CN 202251629U CN 2011203623129 U CN2011203623129 U CN 2011203623129U CN 201120362312 U CN201120362312 U CN 201120362312U CN 202251629 U CN202251629 U CN 202251629U
Authority
CN
China
Prior art keywords
guide sleeve
air spring
piston rod
order
sealing
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
Application number
CN2011203623129U
Other languages
Chinese (zh)
Inventor
邓诤烨
邓峥嵘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI ZHENGYE PNEUMATIC DEVICE CO Ltd
Original Assignee
WUXI ZHENGYE PNEUMATIC DEVICE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUXI ZHENGYE PNEUMATIC DEVICE CO Ltd filed Critical WUXI ZHENGYE PNEUMATIC DEVICE CO Ltd
Priority to CN2011203623129U priority Critical patent/CN202251629U/en
Application granted granted Critical
Publication of CN202251629U publication Critical patent/CN202251629U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an air spring by adopting dual sealing structures. The air spring comprises an outer tube and a piston rod, wherein the outer diameter of the piston rod is 14mm, a primary guide sleeve is arranged at the joint of the piston rod and the inner side of an end part of the outer tube, a primary oil seal is arranged at the inner end of the primary guide sleeve, an annular groove is concentrically arranged at the outer end of the primary guide sleeve, a rubber dust-proof sleeve is arranged in the annular groove, the outer diameter of the dust-proof sleeve is 21mm, a secondary guide sleeve is arranged at the inner end of the primary oil seal, and a secondary oil seal is arranged at the inner end of the secondary guide sleeve. By adopting the dual sealing structures, the air spring has better sealing performance, and the leakage of internal filler is effectively prevented; as the annual groove is concentrically arranged at the outer end of the primary guide sleeve, and the dust-proof sleeve is arranged in the annular groove, dust can be effectively prevented from entering the inner part of the air spring, so that wear of sealing pieces and failure of internal lubricating oil are avoided.

Description

Adopt the air spring of double sealing structure
Technical field
The utility model relates to a kind of elastic element, relates in particular to a kind of air spring that adopts double sealing structure.
Background technique
Air spring is to be a kind of elastic element of working medium with gas and liquid, by outer tube, piston rod, guide sleeve, piston, packing formations such as (inert gas or gas mixtures).When present air spring outer tube and guide sleeve sealing, only the primary seal circle is set in guide sleeve the inner, since motion each other between piston rod and the guide sleeve, the leakage that is prone to produce packing; Because the working environment of air spring is more abominable, and the surface of piston rod is prone to be stained with a large amount of dusts, dust gets into its inner seal of the inner meeting wearing and tearing of air spring, and lubricant oil was lost efficacy, and has had a strong impact on the working life of air spring, has increased the cost that uses simultaneously.
The model utility content
The purpose of the utility model is to address the above problem, and a kind of air spring that adopts double sealing structure is provided, and it has good seal performance and effective blocks dust etc. and gets into the inner advantage of air spring.
The purpose of the utility model is to realize through following technological scheme:
A kind of air spring that adopts double sealing structure; Comprise outer tube, piston rod, the external diameter of said piston rod is 14mm, and the inboard junction point with piston rod in said outer tube end is provided with first order guide sleeve; The inner of said first order guide sleeve is provided with first order oil sealing; Said first order guide sleeve outer end is concentric has circular groove, is provided with boot seal in the said circular groove, and the external diameter of said dirt-proof boot is 21mm; The inner of said first order oil sealing is provided with second level guide sleeve, and the inner of said second level guide sleeve is provided with second level oil sealing.
The inner of said second level oil sealing is provided with pad.
The beneficial effect of the utility model is: through first order guide sleeve and second level guide sleeve are set; And first order oil sealing and second level oil sealing; Adopt double sealing structure, make the better tightness of this air spring effectively to have prevented the leakage of its inside stuffing; The circular groove that has through concentric in first order guide sleeve outer end is provided with dirt-proof boot in the circular groove, can effectively prevent the inside of entering air springs such as dust, has avoided the wearing and tearing of Sealing and the inefficacy of internal lubrication oil.Contrast existing technology, this air spring have good seal performance and effective blocks dust etc. and get into the inner advantage of air spring.
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 air spring of the described employing double sealing structure of the utility model.
Among the figure:
1, outer tube; 2, piston rod; 3, first order oil sealing; 4, first order guide sleeve; 5, dirt-proof boot; 6, second level guide sleeve; 7, second level oil sealing; 8, pad.
Embodiment
Among the embodiment as shown in Figure 1, the air spring of the described employing double sealing structure of the utility model comprises outer tube 1, piston rod 2; The external diameter of piston rod 2 is 14mm, and the inboard junction point with piston rod 2 in outer tube 1 end is provided with first order guide sleeve 4, and the inner of first order guide sleeve 4 is provided with first order oil sealing 3; First order guide sleeve 4 outer ends are concentric has circular groove; Be provided with boot seal 5 in the said circular groove, the external diameter of dirt-proof boot 5 is 21mm, and the inner of first order oil sealing 3 is provided with second level guide sleeve 6; The inner of second level guide sleeve 6 is provided with second level oil sealing 7, and the inner of second level oil sealing 7 is provided with pad 8.

Claims (2)

1. an air spring that adopts double sealing structure comprises outer tube (1), piston rod (2), it is characterized in that; The external diameter of said piston rod (2) is 14mm; The inboard junction point with piston rod (2) in said outer tube (1) end is provided with first order guide sleeve (4), and the inner of said first order guide sleeve (4) is provided with first order oil sealing (3), and said first order guide sleeve (4) outer end is concentric has circular groove; Be provided with boot seal (5) in the said circular groove; The external diameter of said dirt-proof boot (5) is 21mm, and the inner of said first order oil sealing (3) is provided with second level guide sleeve (6), and the inner of said second level guide sleeve (6) is provided with second level oil sealing (7).
2. the air spring of employing double sealing structure according to claim 1 is characterized in that, the inner of said second level oil sealing (7) is provided with pad (8).
CN2011203623129U 2011-09-26 2011-09-26 Air spring by adopting dual sealing structures Expired - Lifetime CN202251629U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203623129U CN202251629U (en) 2011-09-26 2011-09-26 Air spring by adopting dual sealing structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203623129U CN202251629U (en) 2011-09-26 2011-09-26 Air spring by adopting dual sealing structures

Publications (1)

Publication Number Publication Date
CN202251629U true CN202251629U (en) 2012-05-30

Family

ID=46112875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203623129U Expired - Lifetime CN202251629U (en) 2011-09-26 2011-09-26 Air spring by adopting dual sealing structures

Country Status (1)

Country Link
CN (1) CN202251629U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359534A (en) * 2011-09-26 2012-02-22 无锡诤烨气动器件有限公司 Gas spring adopting dual-seal structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359534A (en) * 2011-09-26 2012-02-22 无锡诤烨气动器件有限公司 Gas spring adopting dual-seal structure

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20120530

CX01 Expiry of patent term