CN220668375U

CN220668375U - Pneumatic connector

Info

Publication number: CN220668375U
Application number: CN202322055257.4U
Authority: CN
Inventors: 王炜棠
Original assignee: Dongguan Emma Cnc Technology Co ltd
Current assignee: Dongguan Emma Cnc Technology Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-03-26
Anticipated expiration: 2033-08-02

Abstract

The utility model belongs to the field of pneumatic connectors, in particular to a pneumatic connector, which comprises a body, wherein the body is formed by surrounding an inner moving shaft by an outer fixed shaft, the inner moving shaft is provided with a flow guide channel for compressed air to flow to a pneumatic tool bit, a first passage is formed between the outer fixed shaft and the inner moving shaft, and the first passage reserves a width required by the dustpan change of a first sealing ring for the first sealing ring restrained by the outer fixed shaft and the inner moving shaft; the utility model has the beneficial effects that a certain space is reserved in a dynamic and static combined connecting structure for deformation of the first sealing ring, and when the inner moving shaft moves, the dustpan change of the first sealing ring only causes deformation through external force, so that the condition that the first sealing ring generates sliding friction is avoided, and the problem of air leakage caused by friction damage of the first sealing ring in the prior art is solved.

Description

Pneumatic connector

Technical Field

The utility model belongs to the field of pneumatic connectors, and particularly relates to a pneumatic connector.

Background

As shown in fig. 1, the drawing is a sectional view of a quick connector 101 connected with a pneumatic tool bit 103, and as can be seen from the drawing, one end of the quick connector 101 is connected with an air pipe, the other end of the quick connector 101 is a shaft sleeve 104, the shaft sleeve 104 is sleeved on an air inlet shaft of the pneumatic tool bit 103, and a gap between a steel sleeve 102 of the air inlet shaft and the shaft sleeve 104 is filled through a Y-shaped sealing ring 100, so that loss of compressed air serving as a source power in a circulation process is reduced.

However, the pneumatic tool bit 103 is compatible with the punching operation, and the steel sleeve 102 also generates a corresponding stroke change, so that the Y-shaped seal ring 100 which is originally only used for filling is in sliding friction with the steel sleeve 102, and the Y-shaped seal ring 100 is severely worn after long-time use, so that the air pressure is insufficient, and the cutting effect is poor.

Disclosure of Invention

In order to solve the above problems, the present utility model provides a pneumatic connector, which aims to solve the above air leakage.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pneumatic connector, its characterized in that includes the body, and the body is formed by outer fixed axle surrounding inner moving axle, and the inner moving axle has the water conservancy diversion passageway that supplies compressed air to pneumatic tool bit circulation, is formed with first passageway between outer fixed axle and the inner moving axle, and this first passageway is reserved the required width of confession first sealing washer dustpan change to the first sealing washer that is restrained by outer fixed axle and inner moving axle.

Further, the upper surface of the outer fixed shaft is provided with a first opening which is designed to be open.

Further, the constraint of the first sealing ring is that the inner ring surface and the outer ring surface of the first sealing ring are provided with outwards protruding positioning parts, and the surface of the inner moving shaft corresponding to the first sealing ring with the outer fixed shaft is provided with a first groove-shaped structure matched with the positioning parts, and the first sealing ring is held between the inner moving shaft and the outer fixed shaft through the two ends of the first groove-shaped structure.

Further, in the cross-sectional state, the cross-section of the first seal ring is "H" shaped.

Further, a second sealing groove with a second sealing ring is arranged on the peripheral surface of the outer fixed shaft,

further, the device also comprises a pressing collar with an annular structure, wherein the pressing collar is arranged in the first opening on the upper surface of the outer fixed shaft, the inner ring surface of the pressing collar forms a second opening, and the edge of the second opening corresponds to the side surface area of the diversion channel.

Further, the diversion channel penetrates from the central position of the upper end face of the inner moving shaft to the central position of the other end.

Further, the periphery of the pressing collar is also provided with a third sealing ring which is propped against the inner peripheral surface of the outer fixed shaft, and at least two third sealing rings are arranged.

Further, the novel pneumatic shock absorber further comprises a fourth sealing ring, the inner ring surface of the pressing shaft ring and the area of the inner shaft corresponding to the inner ring surface are respectively provided with a second groove-shaped structure, a second passage is formed between the inner ring surface and the inner shaft, the fourth sealing ring is arranged in the second passage and restrained by the second groove-shaped structure, and the second passage reserves the width required by the vibration change of the fourth sealing ring for the fourth sealing ring restrained by the inner ring surface and the inner shaft.

Further, the inner ring surface of the pressing shaft ring is also provided with a straight shaft sleeve, the straight shaft sleeve is matched with the inner ring surface of the pressing shaft ring, and when the inner moving shaft moves up and down, the inner moving shaft moves up and down along the straight shaft sleeve.

The utility model has the beneficial effects that a certain space is reserved in a dynamic and static combined connecting structure for deformation of the first sealing ring, and when the inner moving shaft moves, the dustpan change of the first sealing ring only causes deformation through external force, so that the condition that the first sealing ring generates sliding friction is avoided, and the problem of air leakage caused by friction damage of the first sealing ring in the prior art is solved.

Drawings

Fig. 1 is a cross-sectional view of the prior art.

Fig. 2 is a cross-sectional view of the pneumatic connector after application to the quick connector and the pneumatic tool bit.

Fig. 3 is a cross-sectional view of a pneumatic fitting.

Fig. 4 is a schematic view of fig. 3 in a perspective state.

Fig. 5 is a schematic view of fig. 4 with the first seal ring and the second seal ring removed.

Fig. 6 is a perspective view of the pneumatic fitting.

Fig. 7 is an exploded view of fig. 6.

Reference numerals illustrate: 100. y-shaped sealing rings; 101. a quick connector; 102. a steel sleeve;

103. pneumatic tool bit; 104. a shaft sleeve; 2. a body; 200. an outer fixed shaft; 201. an inner moving shaft;

202. a diversion channel; 203. a first aisle; 204. a first seal ring; 205. a first channel structure;

206. a second seal ring; 207. pressing a collar; 207a, a second groove-like structure; 208. a third seal ring; 209. a fourth seal ring; 210. a straight shaft sleeve.

Detailed Description

Fig. 2 is a cross-sectional view of the pneumatic connector after application to the quick connector 101 and the pneumatic cutter head 103.

The pneumatic connector comprises a body 200, wherein a local area of the body 200 is fixed in a cavity preset by the pneumatic connector through a screw, and an area of the body 200 exposed out of the pneumatic connector is wrapped by a shaft sleeve 104 of the quick connector 101 and is fixed by a threaded connection mode.

As shown in fig. 3-7, the body 200 is formed by surrounding an inner moving shaft 201 by an outer fixed shaft 200, the inner moving shaft 201 is connected with a pneumatic tool bit 103, the upper surface of the outer fixed shaft 200 is designed to be open so that compressed air of a quick joint can pass through a diversion channel 202 of the inner moving shaft 201 and be communicated with the pneumatic tool bit 103, wherein first passages 203 corresponding to each other are arranged on the surfaces of the outer fixed shaft 200 and the inner moving shaft 201 opposite to each other, and the first passages 203 reserve the width required by the vibration change of the first sealing ring 204 for the first sealing ring 204 restrained by the outer fixed shaft 200 and the inner moving shaft 201;

in this scheme, the inner moving shaft 201 and the air tool bit 103 have a connection relationship, specifically, the inner end of the inner moving shaft 201 is in threaded connection with the shaft sleeve 104 on the air tool bit 103, the up-down reciprocating motion of the air tool bit 103 drives the inner moving shaft 201 to do the same motion, and the first sealing ring 204, one end of which is restrained by the inner moving shaft 201, deforms in the first passageway 203 due to external force, so that not only can the friction problem be solved, but also the air tightness between the inner moving shaft 201 and the outer fixed shaft 200 can be maintained.

The first passage 203 is formed by corresponding openings of the first groove-like structure 205.

The constraint of the first sealing ring 204 is that the inner ring surface and the outer ring surface of the first sealing ring 204 are provided with positioning parts protruding outwards, the surfaces of the inner moving shaft 201 and the outer fixed shaft 200 corresponding to the first sealing ring 204 are provided with first groove-shaped structures 205 adapting to the positioning parts, and the first sealing ring 204 is kept between the inner moving shaft 201 and the outer fixed shaft 200 through two ends of the first groove-shaped structures, so that the design has the advantages of convenience in installation and difficulty in disengaging the first sealing ring 204 from the first groove-shaped structures 205.

In the cross-sectional state, the cross-section of the first seal ring 204 is "H" shaped.

The inner moving shaft 201 is movable, and the clearance fit between the inner moving shaft 201 and the outer fixed shaft 200 can solve the problem that compressed air flows out from the clearance between the inner moving shaft 201 and the outer fixed shaft 200 through the first sealing ring 204.

The inner end of the inner shaft 201 passes through the outer fixed shaft 200, so that after the air tool bit 103 is mounted, a gap between the bottom surface of the outer fixed shaft 200 and the inner shaft 201 is in communication with a gap between the outer fixed shaft 200 and the surface of the cavity, and a second seal groove with a second seal ring 206 is provided on the peripheral surface of the outer fixed shaft 200 in the cavity to isolate air flow between the outer fixed shaft 200 and the cavity, thereby improving sealing effect between the inner shaft 201 and the outer fixed shaft 200.

The pressing collar 207 is arranged in an open design on the upper surface of the outer fixed shaft 200, the open design is a first opening, the edge of a second opening of the pressing collar 207 corresponds to the side surface area of the diversion channel 202, and the diversion channel 202 penetrates from the central position of the upper end surface of the inner movable shaft 201 to the central position of the other end; the pressing collar 207 is designed to prevent the inner shaft 201 from being separated from the outer fixed shaft 200, and thus the pressing collar 207 achieves an object of maintaining the inner shaft 201 connected to the outer fixed shaft 200.

The outer periphery of the pressing collar 207 is also provided with a third sealing ring 208 which is propped against the inner peripheral surface of the outer fixed shaft 200, and the number of the third sealing rings 208 is two; the effect is to isolate the air flow between the compression collar 207 and the outer fixed shaft 200.

The inner ring surface of the pressing collar 207 is further provided with a second groove-shaped structure 207a located below the third sealing ring 208, and a fourth sealing ring 209 installed in the second groove-shaped structure 207a, the second groove-shaped structure 207a is identical to the first groove-shaped structure 205, the structure of the fourth sealing ring 209 is identical to the structure of the first sealing ring 204, and the second groove-shaped structure 207a is further disposed on the peripheral surface of the inner shaft 201 corresponding to the fourth sealing ring 209, and the above functions and actions can be referred to the description of the first sealing ring 204 in the first groove-shaped structure 205, which is not repeated herein.

The inner ring surface of the pressing collar 207 is also provided with a straight shaft sleeve 210, the straight shaft sleeve 210 is matched with the inner ring surface of the pressing collar 207, when the inner moving shaft 201 moves up and down, the inner moving shaft 201 moves up and down along the straight shaft sleeve 210, and the straight shaft sleeve 210 plays a role in guiding, so that the smoothness of the movement of the inner moving shaft 201 is ensured.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. The utility model provides a pneumatic connector, its characterized in that includes the body, and the body is formed by outer fixed axle surrounding inner moving axle, and the inner moving axle has the water conservancy diversion passageway that supplies compressed air to pneumatic tool bit circulation, is formed with first passageway between outer fixed axle and the inner moving axle, and this first passageway is reserved the required width of confession first sealing washer dustpan change to the first sealing washer that is restrained by outer fixed axle and inner moving axle.

2. A pneumatic fitting according to claim 1, wherein the upper surface of the outer fixed shaft is a first opening of open design.

3. A pneumatic coupler according to claim 1, wherein the first seal ring is constrained by having outwardly projecting locating portions on the inner and outer annular surfaces of the first seal ring, and wherein the surfaces of the inner and outer fixed shafts corresponding to the first seal ring are provided with first groove-like formations adapted to the locating portions, the first seal ring being retained between the inner and outer fixed shafts by the ends thereof.

4. A pneumatic fitting as claimed in claim 3 wherein the first seal ring has an "H" shape in cross-section.

5. A pneumatic coupler according to claim 1, wherein the outer fixed shaft is provided with a second seal groove with a second seal ring on its peripheral surface.

6. A pneumatic coupler according to claim 2, further comprising a collar of annular configuration disposed within the first opening in the upper surface of the outer fixed shaft, the inner annulus of the collar defining a second opening, the edges of the second opening corresponding to the side regions of the flow guide channel.

7. A pneumatic connector as claimed in claim 1, wherein the flow guide passage extends from the central position of the upper end face of the inner shaft to the central position of the other end.

8. A pneumatic coupler according to claim 6, wherein the outer periphery of the press collar is further provided with third sealing rings which are abutted against the inner peripheral surface of the outer fixed shaft, and at least two third sealing rings are provided.

9. A pneumatic coupler according to claim 6, further comprising a fourth seal ring, wherein the inner annular surface of the press collar and the region of the inner shaft corresponding to the inner annular surface are each provided with a second groove structure, a second passageway is formed between the inner annular surface and the inner shaft, the fourth seal ring is disposed in the second passageway and is constrained by the second groove structure, and the second passageway retains a width required for the fourth seal ring to change in a dustpan by the fourth seal ring constrained by the inner annular surface and the inner shaft.

10. The pneumatic connector of claim 6, wherein the inner ring surface of the press collar is further provided with a straight shaft sleeve, the straight shaft sleeve is matched with the inner ring surface of the press collar, and the inner shaft moves up and down along the straight shaft sleeve when the inner shaft moves up and down.