CN203068021U

CN203068021U - Quick joint

Info

Publication number: CN203068021U
Application number: CN 201220639488
Authority: CN
Inventors: 陈伟锋
Original assignee: ZHEJIANG SANFENG VALVE CO Ltd
Current assignee: ZHEJIANG SANFENG VALVE CO Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-07-17
Anticipated expiration: 2022-11-28

Abstract

The utility model discloses a quick joint which comprises a top rod and a piston. The top rod comprises a top cover and a rod body, an annular convex body is formed between the top cover and the rod body, the surface of the annular convex body is a conical surface, and an arc-shaped face is formed at the connection position of the inner wall and the end portion of the piston. The quick joint is simple and exquisite in structure, the top rod has a self-positioning guiding function, when the quick joint is mounted, efficiency is high, the sealing property of obtained products is good, radial and axial dual sealing is formed simultaneously, the using performance of the quick joint is greatly improved, and the service life of the quick joint is greatly prolonged.

Description

Rapid pipe joint

Technical field

The utility model relates to the component in the air-conditioning system, especially relates to a kind of rapid pipe joint.

Background technique

Rapid pipe joint in air-conditioning system, wherein sealing is not enough between the push rod in the rapid pipe joint and the piston, forms the slit between push rod and piston, and these slits will cause gas leakage, cause seal failure.In this structure, push rod does not have the positioning and guiding effect, be easy to installing because off normal can not well and form good sealing between the piston, if not only want careful in order to form sealing and need to install, and require very tight for the spring that matches with it, this not only can reduce working efficiency, and cost is higher, otherwise, the up-to-standard rate of rapid pipe joint descends, and is unfavorable for long-run development.

In view of this, the inventor has done deep research, and by feat of the experience of being engaged in relevant industries for many years and practice, designs a kind of rapid pipe joint, can solve deficiency of the prior art, exquisiteness simple in structure, push rod have self-align guide function, when mounted the efficient height, the products obtained therefrom good seal performance, form radial and axial double seal simultaneously, usability and working life improve greatly, and this case produces thus.

The model utility content

The purpose of this utility model is to provide a kind of rapid pipe joint, can solve deficiency of the prior art, exquisiteness simple in structure, push rod has self-align guide function, efficient height when mounted, the products obtained therefrom good seal performance forms radial and axial double seal simultaneously, and usability and working life improve greatly.

To achieve these goals, the technical solution of the utility model is as follows:

Rapid pipe joint comprises push rod and piston, it is characterized in that: described push rod comprises top cover and the body of rod, forms annular convex between top cover and the body of rod, and the surface of this annular convex is the conical surface, forms arc shaped surface in inwall and the jointing place, end of piston.

Such setting can make between push rod and the piston to form self-alignly that because form annular convex between top cover and the body of rod, this convex annular physical efficiency makes between push rod and the piston not off normal, excellent contact between push rod and the piston.

The surface of annular convex is the conical surface, the inwall end of piston is arc shaped surface, be line when between push rod and piston, contacting at the beginning and the contacting of face, when quick structure is mounted locking, between push rod and the piston by fastening, contacting between annular convex and the piston is the contact of face face, forms excellent sealing performance.

Further, the internal layer at pistons end is provided with rubber layer.

Further, form annular lip on the lower end surface of described top cover.

Such setting makes to form sealing between the rubber layer of annular lip and piston, guarantees that rapid pipe joint does not leak, and improves usability.

The beneficial effects of the utility model: hence one can see that, and the utility model has two seals simultaneously, guarantees that rapid pipe joint is in use air tight, improves usability.First road is sealed into, the axial seal between the rubber layer of top cover annular lip and pistons end internal layer; Second road is sealed into, and forms radial seal between the rubber layer arc shaped surface of the push rod neck annular convex conical surface and pistons end internal layer.Simultaneously, because the setting of annular convex, push rod is not easy off normal, improves installation efficiency, is beneficial to long-run development.

In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, the utility model relates to a kind of rapid pipe joint, comprise push rod 1 and piston 2, it is characterized in that: described push rod 1 comprises top cover 3 and the body of rod 4, between top cover 3 and the body of rod 4, form annular convex 5, the surface of this annular convex 5 is the conical surface 6, inwall and jointing place, end at piston 2 form arc shaped surface 7, such setting, can make between push rod 1 and the piston 2 to form self-alignly, make between push rod 1 and the piston 2 not off normal, and have excellent contact, between push rod 1 and piston 2, transfer the face face to and contact for line contacts with face, form good apex seal performance.

Further arrange, the internal layer in piston 2 ends is provided with rubber layer 8.

Further arrange, form annular lip 9 on the lower end surface of described top cover 3, make to form axial seal between the rubber layer 8 on annular lip 9 and the piston 2 end internal layers, guarantee that rapid pipe joint does not leak, the raising usability.

As from the foregoing, the utility model exquisiteness simple in structure, push rod has self-align guide function, efficient height when mounted, the products obtained therefrom good seal performance forms radial and axial double seal simultaneously, and usability and working life improve greatly.

The above only is an embodiment of the present utility model, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.

Claims

1. rapid pipe joint comprises push rod and piston, it is characterized in that: described push rod comprises top cover and the body of rod, forms annular convex between top cover and the body of rod, and the surface of this annular convex is the conical surface, forms arc shaped surface in inwall and the jointing place, end of piston.

2. according to the described rapid pipe joint of claim 1, it is characterized in that: the internal layer at pistons end is provided with rubber layer.

3. according to the described rapid pipe joint of claim 1, it is characterized in that: form annular lip on the lower end surface of described top cover.