CN202228663U - Conveniently-assembled combination structure of piston and sealing ring - Google Patents

Conveniently-assembled combination structure of piston and sealing ring Download PDF

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Publication number
CN202228663U
CN202228663U CN2011203318319U CN201120331831U CN202228663U CN 202228663 U CN202228663 U CN 202228663U CN 2011203318319 U CN2011203318319 U CN 2011203318319U CN 201120331831 U CN201120331831 U CN 201120331831U CN 202228663 U CN202228663 U CN 202228663U
Authority
CN
China
Prior art keywords
piston
seal ring
ring
sealing ring
diameter
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 - Fee Related
Application number
CN2011203318319U
Other languages
Chinese (zh)
Inventor
倪禹隆
Original Assignee
倪禹隆
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 倪禹隆 filed Critical 倪禹隆
Priority to CN2011203318319U priority Critical patent/CN202228663U/en
Application granted granted Critical
Publication of CN202228663U publication Critical patent/CN202228663U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides the conveniently-assembled combination structure of a piston and sealing rings, wherein the piston is provided with a piston head and a piston rod. An inner sealing ring and an external sealing ring are arranged in the installation groove of the piston head. The piston head is formed through connecting two circular columns of different diameters and the installation groove is provided one circular column with a smaller diameter. The diameter of the circular column with a smaller diameter is less than or equal to the internal diameter of the external sealing ring. The circular column with a smaller diameter is provided with a positioning groove and a back-up ring is arranged in the positioning groove. The inner sealing ring and the external sealing ring are positioned between the back-up ring and the circular column with a larger diameter. The inner sealing ring is arranged in the installation groove first and the external sealing ring is sleeved onto the inner sealing ring. Then the back-up ring is clamped inside the positioning groove. Therefore, the reliable installation of the inner and external sealing rings can be ensured. Since the piston head is formed through connecting two circular columns of different diameters, the external sealing ring can be easily disassembled and assembled.

Description

Piston and seal ring easy assembling type composite structure
Technical field
The utility model relates to the composite structure of piston and seal ring.
Background technique
The composite structure of existing piston and seal ring does, on a cylindrical piston head, has mounting groove, in mounting groove, from the inside to the outside, inner seal ring and exterior seal ring is housed successively.Because inner seal ring is generally the rubber material, exterior seal ring is generally engineering plastics; Therefore the deficiency of the composite structure of above-mentioned existing piston and seal ring existence is: when the dismounting exterior seal ring; Need it be enlarged by force, easily with its damage, and the dismounting exterior seal ring is inconvenient.
The model utility content
The purpose of the utility model is to provide a kind of piston and seal ring easy assembling type composite structure, and this composite structure can make the easy disassembling of inside and outside seal ring.
For realizing above-mentioned purpose; The utility model adopts following scheme: piston and seal ring easy assembling type composite structure, and piston has piston head and piston rod, and inner seal ring and exterior seal ring are housed in the mounting groove that has on the piston head; Piston head is connected to form by the cylindrical body that two diameters differ; Mounting groove is opened on the less cylindrical body of diameter, and the less cylindrical diameter of diameter has locating slot smaller or equal to the internal diameter of exterior seal ring on the less cylindrical body of diameter; Be installed with back-up ring in the locating slot, inner seal ring and exterior seal ring are between the bigger cylindrical body of back-up ring and diameter.
Visible by such scheme; When piston that installation the utility model provides and seal ring easy assembling type composite structure, earlier inner seal ring is loaded in the mounting groove, again exterior seal ring is enclosed within on the inner seal ring; And then back-up ring is stuck in the locating slot, can guarantee the reliable installation of inside and outside seal ring.Because piston head is connected to form by the cylindrical body that two diameters differ, exterior seal ring can be easy to dismounting.In addition, be loaded on piston in the cylinder body after, receive the restriction of cylinder inner bore, back-up ring can not come off from mounting groove.
The utility model is rational in infrastructure, use is reliable, easy accessibility, quick.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural drawing;
Fig. 2 is the structural representation of back-up ring.
Embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing.
Referring to Fig. 1
In piston that the utility model provides and the seal ring easy assembling type composite structure; Piston has piston head 1 and piston rod 2; Inner seal ring 3 and exterior seal ring 4 are housed in the mounting groove 1c that has on the piston head 1, and cylindrical body 1a, cylindrical body 1b that piston head 1 is differed by two diameters connect to form, and mounting groove 1c opens on the less cylindrical body 1b of diameter; The diameter of the cylindrical body 1b that diameter is less is smaller or equal to the internal diameter of exterior seal ring 4; On the less cylindrical body 1b of diameter, have locating slot 1d, be installed with back-up ring 5 in the locating slot 1d, inner seal ring 3 and exterior seal ring 4 are between the bigger cylindrical body 1a of back-up ring 5 and diameter.
In conjunction with Fig. 1, Fig. 2
For better that inner seal ring 3, exterior seal ring 4 is fixing, in the present embodiment, locating slot 1d is circular, and mounting groove 1c communicates with locating slot 1d, and back-up ring 5 is more than two, back-up ring 5 be shaped as an annulus section.The internal diameter of back-up ring 5 is identical with the diameter of locating slot 1d bottom land.

Claims (2)

1. piston and seal ring easy assembling type composite structure; Piston has piston head and piston rod; Inner seal ring and exterior seal ring are housed in the mounting groove that has on the piston head, it is characterized in that: piston head is connected to form by the cylindrical body that two diameters differ, and mounting groove is opened on the less cylindrical body of diameter; The less cylindrical diameter of diameter is smaller or equal to the internal diameter of exterior seal ring; On the less cylindrical body of diameter, have locating slot, be installed with back-up ring in the locating slot, inner seal ring and exterior seal ring are between the bigger cylindrical body of back-up ring and diameter.
2. piston according to claim 1 and seal ring easy assembling type composite structure is characterized in that: locating slot is circular, and mounting groove communicates with locating slot, and back-up ring is more than two, back-up ring be shaped as an annulus section.
CN2011203318319U 2011-09-06 2011-09-06 Conveniently-assembled combination structure of piston and sealing ring Expired - Fee Related CN202228663U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203318319U CN202228663U (en) 2011-09-06 2011-09-06 Conveniently-assembled combination structure of piston and sealing ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203318319U CN202228663U (en) 2011-09-06 2011-09-06 Conveniently-assembled combination structure of piston and sealing ring

Publications (1)

Publication Number Publication Date
CN202228663U true CN202228663U (en) 2012-05-23

Family

ID=46079249

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203318319U Expired - Fee Related CN202228663U (en) 2011-09-06 2011-09-06 Conveniently-assembled combination structure of piston and sealing ring

Country Status (1)

Country Link
CN (1) CN202228663U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297261A (en) * 2011-09-06 2011-12-28 倪禹隆 Piston and sealing ring easily assembling combination structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297261A (en) * 2011-09-06 2011-12-28 倪禹隆 Piston and sealing ring easily assembling combination structure

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120523

Termination date: 20130906