CN205191049U - Quick connector - Google Patents

Abstract

The utility model discloses a quick connector, which comprises: a cylinder body, the first end of which is provided with a main air-filling hole connected with the inner hole of the optical shaft; Among them, it is made of elastic material and installed in the second end of the cylinder; the piston is installed in the cylinder, and when the piston slides along the axial direction of the cylinder, it can push the sealing connection sleeve, wherein: When the piston pushes the sealing connection sleeve, the inner hole of the sealing connection sleeve becomes smaller. Since the second end of the cylinder is equipped with an elastic sealing connection sleeve for optical shaft insertion, when the sealing connection sleeve is not pushed by the piston, the axial dimension of the sealing connection sleeve and the radial dimension of its inner hole None of them have changed, and its inner hole can be freely plugged and pulled out by the optical shaft; when the sealing connecting sleeve is pushed by the piston, the axial dimension of the sealing connecting sleeve becomes smaller, and the radial dimension of its inner hole also becomes smaller, so that it The hole wall of the inner hole is tightly wrapped on the optical axis, so as to realize the airtight connection.

Description

quick connector

technical field

The utility model relates to a connector used for quickly sealing and connecting an optical axis.

Background technique

In the prior art, in order to inflate the cavity of the part, the worker needs to connect a connector at the outlet end of the inflation tube (the inlet end of the inflation tube is connected to the air pump), and the connector is used to connect with the inflation joint of the part (the shape is Cylindrical with an inner hole) for a sealed connection to prevent gas from leaking from the gap between the inflatable joint and the connector. In order to realize the connection and sealing with the inflatable joint at the same time, in the prior art, the connector and the inflatable joint are usually threaded, and then sealed with an O-ring. However, this method of threaded connection requires the relative rotation of the connector and the inflatable joint to be realized, which will inevitably increase the complexity of the operation of connecting the connector and the inflatable joint, and when the inflatable joint is the optical axis (the outer peripheral surface of the optical axis has no thread), the connector cannot be connected to the inflatable joint.

Utility model content

Aiming at the above-mentioned technical problems existing in the connectors in the prior art, the utility model provides a quick connector capable of quickly sealing and connecting the optical shaft (the optical shaft is provided with an inner hole and can be used as an inflatable joint). The structure and operation of the device are simple, and the sealing performance is good.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A quick connector used to connect an optical axis with an inner hole, comprising: a cylinder body, a main air-filling hole that communicates with the inner hole of the optical axis to inflate the inner hole at the first end; A connecting sleeve, the optical axis is inserted into the inner hole of the sealed connecting sleeve, which is made of elastic material and installed in the second end of the cylinder body; the piston is installed in the cylinder body, and the piston can push the sealing connection sleeve when sliding along the axial direction of the cylinder body, wherein: when the piston pushes the sealing connection sleeve, the inner hole of the sealing connection sleeve becomes Small.

Preferably, the first end of the cylinder is also provided with an auxiliary charging hole leading to the end surface of the piston away from the sealing connection sleeve, so that the pressure gas can be pushed against the piston through the auxiliary charging hole. The sealing connection sleeve moves.

Preferably, it also includes an end cap mounted on the second end of the cylinder body, the end cap is provided with an installation hole along the axial direction of the cylinder body, and the sealing connection sleeve is arranged in the installation hole, which The end away from the piston abuts against the stepped surface formed by the installation hole.

Preferably, a first guide hole is opened inside the cylinder along its axial direction, the piston slides along the first guide hole, and an end of the piston opposite to the sealing connection sleeve is provided at least partially on the The push-off shaft in the installation hole, the cylinder body pushes the sealing connection sleeve through the push-off shaft.

Preferably, a guide shaft is provided at one end of the piston facing the first end of the cylinder body, and a second guide hole for sliding the guide shaft is opened on a solid body near the second end of the cylinder body.

Preferably, the pushing shaft, the piston and the guide shaft are arranged coaxially, and an air guide hole passing through the three is opened in the axial direction of the three, and the main air charging hole passes through the air guide hole and the The inner hole of the optical axis is connected.

Preferably, the end cover is threadedly connected to the second end of the cylinder body through external threads on its outer peripheral surface.

Preferably, O-ring seals are used between the piston and the cylinder, between the pushing shaft and the end cover, and between the guide shaft and the cylinder.

Preferably, both ends of the sealing connection sleeve are provided with gaskets.

Compared with the prior art, the beneficial effect of the quick connector of the utility model is: since the second end of the cylinder body is equipped with an elastic sealing connection sleeve for optical shaft insertion, when the sealing connection sleeve is not affected by the piston When pushing, the axial size of the sealing connection sleeve and the radial size of its inner hole do not change, and the inner hole can be used for the optical shaft to be inserted and pulled out at will; when the sealing connection sleeve is pushed by the piston, the shaft of the sealing connection sleeve As the size becomes smaller, the radial dimension of the inner hole also becomes smaller, so that the wall of the inner hole is tightly wrapped on the optical axis, thereby achieving a sealed connection. The sealing connection mode of the utility model has ingenious design, simple structure, convenient operation and good sealing performance.

Description of drawings

Fig. 1 is a schematic structural view of a quick connector of the present invention in an installed state;

Fig. 2 is a schematic structural view of the quick connector of the present invention in an inflated state.

In the picture:

10-cylinder; 11-main air hole; 12-auxiliary air hole; 13-first guide hole; 14-second guide hole; 20-piston; 21-pushing shaft; 22-guide shaft; 23-air guide hole ; 30-seal connection sleeve; 40-end cover; 41-installation hole; 50-gasket; 60-O-ring; 100-optical axis.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the preferred embodiment of the present invention provides a quick connector for connecting an optical shaft 100 with an inner hole so as to fill the inner hole with pressure gas. The quick connector includes a cylinder body 10 , a sealing connection sleeve 30 and a piston 20 . The first end of the cylinder body 10 is provided with a main inflation hole 11. When the optical axis 100 is connected, the main inflation hole 11 communicates with the inner hole of the optical axis 100 so as to charge gas into the inner hole; the sealing connection sleeve 30 is used for light supply The shaft 100 is plugged in, the sealing connection sleeve 30 is made of elastic material, and is installed on the second end of the cylinder body 10, and the structure of the cylinder body needs to limit the overall axial movement of the sealing connection sleeve 30; the piston 20 is installed on the cylinder body 10 and located on one side of the sealing connection sleeve 30 , the piston 20 can slide along the axial direction of the cylinder body 10 , and when moving to the side of the sealing connection sleeve 30 , the piston 20 pushes the sealing connection sleeve 30 . In this way, when the sealing connection sleeve 30 is not pushed by the piston 20, the axial dimension t of the sealing connection sleeve 30 and the radial dimension d of its inner hole do not change, and the inner hole of the sealing connection sleeve 30 can be inserted and removed at will for the optical shaft 100; When the sealing connection sleeve 30 is pushed by the piston 20, the axial dimension of the sealing connection sleeve 30 changes from t to t1, and the size becomes smaller, and the radial dimension of its inner hole changes from d to d1, and the size also becomes smaller, so that The hole wall of the inner hole is tightly wrapped on the optical axis 100, so as to realize a sealed connection. The sealing connection mode of the utility model has ingenious design, simple structure, convenient operation and good sealing performance.

It should be noted that the reason why the radial dimension of the inner hole of the sealing connection sleeve 30 is pushed by the piston 20 becomes smaller is that the solid volume of the sealing connection sleeve 30 remains unchanged during the entire deformation process, when the sealing connection sleeve 30 When the axial dimension becomes smaller, the cross-sectional area of the sealing connection sleeve 30 will increase to make up for the reduction of its axial dimension, while the outer diameter of the sealing connection sleeve 30 remains unchanged. Therefore, the diameter of the inner hole of the sealing connection sleeve 30 automatically decrease.

There are many ways to push the piston 20 to slide in the cylinder body 10, such as mechanical, pneumatic and hydraulic methods. In order to be able to use the pressure gas in the inflation tube, in a preferred embodiment of the present invention, the piston is pushed by pneumatic force. 20. Specifically, the second end of the cylinder body 10 is provided with an auxiliary inflation hole 12, and the auxiliary inflation hole 12 leads to the end surface of the piston 20 away from the sealing connection sleeve 30. Pressure gas is introduced into the hole 12 , and the pressure gas pushes the piston 20 to move toward the sealing connection sleeve 30 inserted with the optical shaft 100 , and finally pushes the sealing connection sleeve 30 to deform and seal the optical shaft 100 .

In order to improve the maintainability and interchangeability of the quick connector, in a preferred embodiment of the present utility model, the second end of the quick connector is equipped with an end cap 40, which is threadedly connected with the cylinder body 10 and passed through The sealant is sealed, and an installation hole 41 is opened along the axial direction of the end cover 40. The installation hole 41 is formed with a stepped surface facing the piston 20. The sealing connection sleeve 30 is installed in the installation hole 41, and the sealing connection sleeve 30 is kept away from the One end of the piston 20 abuts against the stepped surface. In this way, when the piston 20 pushes the end of the sealing connection sleeve 30 opposite to the piston 20 , the sealing connection sleeve 30 is deformed.

In a preferred embodiment of the present utility model, a first guide hole 13 is opened inside the cylinder body 10, the piston 20 slides along the first guide hole 13, and the end of the piston 20 opposite to the sealing connection sleeve 30 is provided with a pushing shaft 21, The pushing shaft 21 partially extends into the mounting hole 41 , and is driven by the piston 20 to move toward the sealing connection sleeve 30 and finally pushes the sealing connection sleeve 30 through the end surface of the pushing shaft 21 . In order to prevent the two ends of the sealing connection sleeve 30 from being squeezed and damaged or worn, gaskets 50 are provided at both ends.

In order to increase the stability of the sliding of the piston 20, a guide shaft 22 is provided at the end of the piston 20 away from the sealing connection sleeve 30, and a second guide hole 14 is provided on the entity near the second end of the cylinder body 10 for the guide shaft 22 to extend in and to be inserted into it. slide inside. In this way, the piston 20 can slide smoothly under the guidance of the first guide hole 13 and the second guide hole 14 .

After the sealing connection sleeve 30 is sealed and connected to the optical shaft 100 , the main air hole 11 needs to communicate with the inner hole of the optical shaft 100 so as to fill the inner hole with pressure gas. In fact, the main air hole 11 can be communicated with the inner hole of the optical axis 100 in various ways, and the main air hole 11 can also have a variety of walking paths. , the piston 20 and the guide shaft 22 are coaxially arranged, and an air guide hole 23 passing through the three is opened in the axial direction of the three, and the air guide hole 23 communicates with the inner hole of the main air charging hole 11 and the optical axis 100 . The way the air guide hole 23 communicates makes the processing simple, and the traveling path of the pressurized gas in the guide hole is smooth.

To increase the tightness inside the quick connector, O-rings 60 are provided between the piston 20 and the cylinder 10 , between the pushing shaft 21 and the end cover 40 , and between the guide shaft 22 and the cylinder 10 for sealing.

The above embodiments are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the spirit and protection scope of the utility model, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the utility model.

Claims (9)

1. A quick connector for connecting an optical shaft with an inner hole, characterized in that it comprises: A cylinder body, the first end of which is provided with a main air-filling hole communicating with the inner hole of the optical axis to inflate the inner hole; A sealing connection sleeve, the optical shaft is inserted into the inner hole of the sealing connection sleeve, which is made of elastic material and installed in the second end of the cylinder; A piston, which is installed in the cylinder body, and can push the sealing connection sleeve when the piston slides along the axial direction of the cylinder body, wherein: When the piston pushes the sealing connection sleeve, the inner hole of the sealing connection sleeve becomes smaller. 2. The quick connector according to claim 1, wherein the first end of the cylinder body is also provided with an auxiliary inflation hole leading to the end surface of the piston away from the sealing connection sleeve, so that the pressure gas The piston is pushed to move toward the sealing connection sleeve through the auxiliary gas charging hole. 3. The quick connector according to claim 2, further comprising an end cap mounted on the second end of the cylinder body, the end cap is provided with a mounting hole along the axial direction of the cylinder body, The sealing connection sleeve is arranged in the installation hole, and its end away from the piston abuts against the stepped surface formed in the installation hole. 4. The quick connector according to claim 3, wherein a first guide hole is opened inside the cylinder along its axial direction, the piston slides along the first guide hole, and the piston and the The opposite end of the sealing connection sleeve is provided with a pushing shaft at least partly located in the installation hole, and the cylinder pushes the sealing connection sleeve through the pushing shaft. 5. The quick connector according to claim 4, characterized in that a guide shaft is provided at one end of the piston facing the first end of the cylinder body, and a guide shaft is set in the body close to the second end of the cylinder body There is a second guide hole for the guide shaft to slide. 6. The quick connector according to claim 5, characterized in that, the pushing shaft, the piston and the guide shaft are arranged coaxially, and an air guide hole passing through the three is provided in the axial direction of the three , the main air hole communicates with the inner hole of the optical axis through the air guide hole. 7 . The quick connector according to claim 3 , wherein the end cover is threadedly connected to the second end of the cylinder through an external thread on its outer peripheral surface. 8. The quick connector according to claim 6, characterized in that, between the piston and the cylinder, between the pushing shaft and the end cover, and between the guide shaft and the cylinder Both are sealed by O-rings. 9. The quick connector according to any one of claims 1 to 8, wherein gaskets are provided at both ends of the sealing connection sleeve.