CN110566742A - Laser welding type quick connector - Google Patents

Abstract

The invention discloses a laser-welded quick-plug connector, which is used for connecting a first pipe piece and a second pipe piece in an automobile pipeline. A joint body, one end of the female joint body is the quick-insert end of the female joint, and the other end is the welded end of the female joint sealed and fixed with the first pipe by laser welding, wherein the quick-insert end of the female joint is provided with an elastic lock spring; The male connector includes a male connector body, one end of the male connector body is a male connector quick-insert end, and the other end is a male connector connection end that is fixedly connected with the second pipe, wherein the outer surface ring of the male connector quick-insert end is provided with a second A clasp groove, the first clasp groove is used to clamp and fix the elastic lock spring so that the quick-plug end of the male connector and the quick-plug end of the female connector are clamped and fixed, so as to realize the quick installation and quick release of the male connector and the female connector, The number of parts is greatly reduced, the processing cost is reduced, and the difficulty of cooperation between parts is reduced.

Description

A laser-welded quick-plug connector

technical field

The invention relates to the technical field of quick-plug joints of automobile fluid transmission pipelines, and more particularly relates to a laser-welded quick-plug joint.

Background technique

At present, there are generally two types of quick-connect connectors for automotive fluid transmission nylon pipes on the market: one is the bamboo-type male-female joint with tubes and is used for locking. Poor, high temperature stretchability, high temperature pressure resistance and blasting performance are poor, the sharp corners of the bamboo joints of metal parts are difficult to ensure the sealing and stretchability, and the high and low temperature alternating sealing performance of the bamboo joints of injection molded parts and nylon tubes is poor; the other It is an in-line push-in connector. One end of the connector is installed on the vehicle valve body (or pump body), and the nylon tube empty tube is inserted into the connector and automatically locked and connected.

Among them, the in-line quick-plug connector can also be divided into two types according to the way of use. One is the easy-to-lock and easy-to-open quick-connect connector, which has a simple structure and is suitable for the gas circuit connection of pneumatic equipment tooling, but not suitable for heavy truck commercial vehicle pneumatic systems. There is a safety risk that it is easy to disengage and cause the brakes to fail; the other is a quick-plug joint that is easy to lock and difficult to open. It has a complex structure and a high risk factor. The plug-in quick-connect joint can also be divided into two types according to the material: one is the joint of the metal main part and the rubber sealing ring. The other is that the external parts are injection molded parts, and the internal parts are metal parts and rubber parts, which are easy to assemble and disassemble, but it is prone to artificial or non-artificial trachea falling off, which poses a safety risk.

To sum up, the in-line push-in connector in the prior art has complex structure, many parts, high processing cost, difficult to guarantee the quality of the parts, difficult to control the mutual cooperation between the parts, and prone to man-made or Non-artificial shedding of the tube body poses a greater safety risk and other issues.

Contents of the invention

In order to solve the deficiencies of the prior art, the present invention provides a laser-welded quick-insert joint, which can realize quick-insertion and quick-release by locking the male joint and the female joint with a lock spring, and cooperates with the female joint and the first The pipe fittings are welded by laser, which not only greatly reduces the number of parts and processing costs, but also reduces the difficulty of matching between parts, and greatly enhances the overall performance of the push-in joints such as tightness and stretchability.

The technical effect to be achieved by the present invention is achieved by the following scheme: a laser welding type quick-plug joint, which is used to connect the first pipe fitting and the second pipe fitting in the automobile pipeline, including a female joint and a male A joint, the female joint includes a female joint body, one end of the female joint body is the quick-insert end of the female joint, and the other end is a welded end of the female joint that is sealed and fixed with the first pipe by laser welding, wherein the quick-insert end of the female joint An elastic lock spring is provided; the male connector includes a male connector body, one end of the male connector body is a quick-plug end of the male connector, and the other end is a male connector connection end that is fixedly connected with the second pipe fitting, wherein the male connector is quickly The outer surface ring of the plug end is provided with a first snap ring groove, and the first snap ring groove is used for clamping and fixing the elastic lock spring so that the quick-inserting end of the male connector and the quick-inserting end of the female connector are clamped and fixed.

Preferably, the elastic lock spring is integrally injection-molded with the female connector body, and extends along the quick-plug end of the female connector toward the welding end of the female connector to form a locking end, and the locking end is separated from the female connector body.

Preferably, a slope for stretching the locking end is provided between the first snap ring groove and the second snap ring groove of the quick-plug end of the male connector.

Preferably, the male joint further includes a first sealing ring, the outer surface of the male joint is also provided with a second snap ring groove, and the first sealing ring is fitted in the second snap ring groove.

Preferably, the first pipe is inserted into the welding end of the female joint and is sealed and fixed by laser welding, or the welding end of the female joint is extended to be inserted into the first pipe and is sealed and fixed by laser welding.

Preferably, the female joint further includes a welding sleeve, the welding sleeve is made of laser-transparent material, and the first pipe and the welding end of the female joint are respectively inserted into the welding sleeve for splicing and fixed by laser welding of the welding sleeve.

Preferably, the connecting end of the male joint is connected to the second pipe through screw connection or laser welding.

Preferably, when the connecting end of the male joint is screwed to the second pipe, the connecting end of the male joint is made of metal.

Preferably, when the connecting end of the male joint is threadedly connected with the second pipe, the connecting end of the male joint is also provided with a second sealing ring and a third snap ring groove, and the second sealing ring is assembled on the first The three clasps are in the groove and seal the connecting end of the male joint and the second pipe piece.

Preferably, the first pipe is a nylon pipe, and the second pipe is a vehicle-mounted valve body or a pump body or a nylon pipe.

The present invention has the following advantages:

1. Through the elastic lock spring of the female joint, the quick assembly and quick release of the male joint and the female joint can be realized, which greatly reduces the number of parts, reduces the processing cost, and reduces the difficulty of cooperation between the parts;

2. By adopting integral injection molding of the elastic lock spring, the number of components of the quick-connect connector can be effectively reduced, thereby reducing the performance risk points of the processing and assembly of the quick-connect connector. Under the premise of ensuring safety, the performance is greatly improved, which can be Realize quick assembly, and can use tools to realize quick disassembly;

3. By inserting the welding end of the female joint with the first pipe and sealing and fixing it by laser welding, the welding end of the female joint and the first pipe are welded as a whole, with fewer welding risk points, easy control, small welding area, and good airtightness. Better tensile properties;

4. The first pipe fitting and the welding end of the female joint are respectively inserted into the welding sleeve for splicing and fixed by laser welding of the welding sleeve, so that the female joint body only needs ordinary injection molding materials, and no specific laser-transmitting materials are required. The welding sleeve It is preferably made of primary color transparent material, with high and stable laser transmittance, high laser welding efficiency and excellent performance, and the welding condition can be detected from the outside.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a female connector in a laser-welded quick-plug connector of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of a female connector in a laser-welded quick-plug connector of the present invention;

Fig. 3 is a three-dimensional structural schematic diagram of a male connector in a laser-welded quick-plug connector of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of a male connector in a laser-welded quick-plug connector according to the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of a laser-welded quick-plug joint connected to a pipe fitting according to the present invention;

Fig. 6 is a schematic cross-sectional structure diagram of another welding method between the female joint and the first pipe fitting in a laser-welded push-in joint according to the present invention;

Fig. 7 is a schematic cross-sectional structure diagram of the laser welding of the male joint and the second pipe fitting in a laser-welded push-in joint according to the present invention;

Fig. 8 is a three-dimensional structural schematic diagram of a dismantling tool for a laser welding type push-in connector according to the present invention.

Detailed ways

The present invention will be described in detail below with reference to the drawings and embodiments. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, terms such as "installation", "connection", "connection", "fixation" and "setting" should be interpreted in a broad sense, for example, it may be a fixed connection or It is a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

As shown in Fig. 1-Fig. 5, the embodiment of the present invention provides a laser welding type push-in joint for connecting the first pipe A and the second pipe B in the pipeline of the automobile. The push-in joint includes a female joint 100 and The male connector 200 disposed in the female connector 100 can be detachably plugged. The male connector 200 and the female connector 100 are in the shape of a cylinder as a whole, and both of them are hollow for fluid circulation. Wherein the first pipe piece A may be a nylon pipe, and the second pipe piece B may be a vehicle-mounted valve body or a pump body or a nylon pipe.

The female connector 100 includes a female connector body 110, one end of the female connector body 110 is a female connector quick-plug end 120, and the female connector quick-plug end 120 is used for quick-plug connection with the male connector 200, and the female connector body The other end of 110 is a female joint welding end 130 , which is used for sealing and fixing with the first pipe A by laser welding, wherein the female joint quick-insertion end 120 is provided with an elastic locking spring 121 .

The male connector 200 includes a male connector body 210 and a first sealing ring 220, one end of the male connector body 210 is a male connector quick-plug end 230, and the male connector quick-plug end 230 is used for quick-plug connection with the female connector 100 , the other end of the male connector body 210 is a male connector connecting end 240, and the male connector connecting end 240 is used to connect and fix the second pipe fitting B, wherein the outer surface ring of the male connector quick-plug end 230 is provided with a first A snap ring groove 231 and a second snap ring groove 232, the first snap ring groove 231 is used to clamp and fix the elastic lock spring 121, and the second snap ring groove 232 is used to assemble the first sealing ring 220 to Make the quick-plug end 230 of the male connector and the quick-plug end 120 of the female connector sealed and fixed when plugged in.

Specifically, the elastic lock spring 121 is preferably integrally injection-molded with the female connector body 110, and extends along the female connector quick-plug end 120 toward the female connector welding end 130 to form a locking end, and the locking end is connected to the female connector body. 110 is separated so that the locking end has a certain degree of elasticity. An inclined surface 233 for expanding the locking end is also provided between the first snap ring groove 231 and the second snap ring groove 232 of the quick-plug end 230 of the male connector. When the male connector 200 is inserted into the female connector 100 , the The first sealing ring 220 is assembled in the second snap ring groove 232, and the male connector quick-insert end 230 is inserted toward the female connector quick-insert end 120, and the locking end of the elastic lock spring 121 is stretched by the inclined surface 233 and then moves to The first snap ring groove 231 shrinks and is snapped and fixed with the first snap ring groove 231. At the same time, the first sealing ring 220 is squeezed and sealed with the inner surface of the female connector quick-plug end 120 to realize the connection between the male connector 200 and the female connector 100. The socket seal is fixed. In the embodiment of the present invention, when the male joint 200 and the female joint 100 are disassembled, the locking end is stretched outward by an external force to unlock the first snap ring groove 231 , and the male joint 200 is pulled out at the same time.

In the quick-plug joint of the embodiment of the present invention, the quick installation and quick disassembly of the male joint 200 and the female joint 100 can be realized through the elastic lock spring 121 of the female joint 100, which greatly reduces the number of parts, reduces the processing cost, and reduces the cost of each component. Difficulty in matching between components.

The quick-plug end 120 of the female joint can effectively reduce the number of components of the quick-plug joint by integrally injecting the elastic lock spring 121, thereby reducing the performance risk points of the processing and assembly of the quick-plug joint. Under the premise of ensuring safety, the use performance There is a big improvement, which can not only realize quick assembly, but also use tools to realize quick disassembly. Preferably, there are two elastic locking springs 121, which are symmetrically arranged on the quick-insert end 120 of the female connector. The locking end of the elastic locking spring 121 can be bent inward so that the locking end can be locked more firmly at the second end. Inside a snap ring groove 231 . Corresponding to the slope 233 of the quick-plug end 230 of the male connector, the inner surface of the quick-plug end 120 of the female connector is also formed with a slope adapted to it so that when the plug-in of the male connector 200 and the female connector 100 is completed, the plugged surfaces are all effective. seal.

The male connector body 210 is also provided with a boss 250 for inserting and positioning. When the male connector 200 and the female connector 100 are fully plugged and sealed, the boss 250 is just in contact with the outer side of the female connector 100 .

In the embodiment of the present invention, there are preferably two second snap ring grooves 232 , which are arranged side by side at the quick-plug end 230 of the male connector, and there are also two first sealing rings 220 .

As an improvement of the embodiment of the present invention, the fixing method between the welding end 130 of the female joint and the first pipe A is that the first pipe A extends into the welding end 130 of the female joint and is inserted into the welding end 130 of the female joint and sealed by laser welding fixed (as shown in Figure 5), the welding end 130 of the female joint is made of laser-transparent material; the welding end 130 of the female joint extends into the first pipe A and is sealed and fixed by laser welding. The first tube A is a laser-transmitting material. The integral welding of the female joint welding end 130 and the first pipe piece A has fewer welding risk points, is easy to control, has a small welding area, and has better sealing and tensile properties. Preferably, the inner surface of the female joint welding end 130 is further provided with a positioning step surface 131 for positioning when connecting with the first pipe A.

As shown in Fig. 6, as another improvement of the embodiment of the present invention, the welding end 130 of the female joint is made of non-transparent material, and the female joint 100 also includes a welding sleeve 140, which is transparent The laser material, the first pipe piece A and the female joint welding end 130 are respectively inserted into the welding sleeve 140 for splicing and fixed by laser welding through the welding sleeve 140 . Since the welding end 130 of the female joint is made of a non-laser-transmitting material, the female joint body 110 only needs ordinary injection molding materials, and no specific laser-transmitting materials are required. The welding sleeve 140 is preferably made of a primary color transparent material, which has high and stable laser transmittance, and can be laser welded. High efficiency and high performance, and can detect the welding condition from the outside.

In the embodiment of the present invention, the connection sealing performance between the female joint 100 and the first pipe part A is greatly improved by laser welding the female joint 100 and the first pipe part A.

As an improvement of the embodiment of the present invention, the male connector connection end 240 of the male connector body 210 and the second pipe B can be screwed (as shown in FIG. 5 ) or laser welded (as shown in FIG. 7 ). , so that the male joint 200 can not only meet the requirements of different application environments, but also provide a design and use scheme with better performance according to the actual situation. It should be understood that the male joint connection end 240 can also be integrally molded with the second pipe piece B, which can be selected according to the actual situation.

When the male connector connecting end 240 of the male connector body 210 is inserted into the second pipe part B and welded by laser, it is consistent with the welding of the female connector body 110 and the first pipe part A. When the second pipe part B is inserted into The connecting end 240 of the male joint is sealed and fixed by laser welding, and the connecting end 240 of the male joint is made of a laser-transparent material; when the connecting end 240 of the male joint is inserted into the second pipe part B and sealed and fixed by laser welding (as shown 7), the second tube B is made of laser-transmitting material. The integral welding of the connecting end 240 of the male joint and the second pipe piece B results in fewer welding risk points, easy control, small welding area, and better sealing and tensile properties.

When the male connector connection end 240 of the male connector body 210 is spliced with the second pipe piece B and fixed by laser welding, the male connector 200 also includes a welding sleeve 140 (consistent with the structure of the female connector 100 adopting the welding sleeve 140, so the figure not shown), the welding sleeve 140 is made of laser-transparent material, and the second pipe piece B and the male joint connection end 240 are respectively inserted into the welding sleeve 140 for splicing and fixed by laser welding. Since the connecting end 240 of the male joint is made of a non-laser-transmitting material, the male joint body 210 only needs ordinary injection molding materials, and no specific laser-transmitting material is required. The welding sleeve 140 is preferably made of primary-color transparent material, which has high and stable laser transmittance and is suitable for laser welding. High efficiency and high performance, and can detect the welding condition from the outside.

The laser welding between the male connector connection end 240 and the second pipe B can be laser welding between the metal male connector 200 and the metal second pipe B, or laser welding between the non-metallic male connector 200 and the non-metal second pipe B , for example, laser welding is used between the injection molded male joint 200 and the first pipe piece A.

When the male joint connection end 240 is threadedly connected to the second pipe piece B, the male joint connection end 240 is a threaded end, which is threadedly connected to the second pipe piece B. Further, the connection end 240 of the male joint is preferably made of metal, which can effectively ensure the sealing of the connection. The threaded end of the male joint connection end 240 may be internally threaded or externally threaded (as shown in FIG. 5 ). Further, the connecting end 240 of the male joint is also provided with a second sealing ring for sealed connection. Specifically, a third snap ring groove may be provided at the connecting end 240 of the male joint, and the second sealing ring is assembled in the third snap ring groove , when the male joint connecting end 240 is threadedly connected with the second pipe fitting B, the second sealing ring is extruded, and the second sealing ring then squeezes the boss 250 of the male joint connecting end 240 so that the male joint connecting end 240 and the second pipe fitting B seal tight connection.

In the embodiment of the present invention, the quick release of the male joint 200 and the female joint 100 can be manually disassembled, or a disassembly tool 300 as shown in FIG. To stretch the pincer head 310 of the elastic lock spring 121, when the male joint 200 and the female joint 100 need to be disassembled, the pincer head 310 extends into the elastic lock spring 121 and applies force to the pincer head 310 to make the elastic lock spring 121 is unlocked from the first snap ring groove 231, and then the male joint 200 can be pulled out from the female joint 100 to realize quick disassembly.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and not to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that modifications or equivalent replacements can still be made to the technical solutions of the embodiments of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A laser-welded quick-plug connector for connecting the first pipe fitting and the second pipe fitting in automobile pipelines, comprising a female connector and a male connector detachably arranged in the female connector, characterized in that the female connector It includes a female joint body, one end of the female joint body is a quick-insert end of the female joint, and the other end is a welded end of the female joint sealed and fixed with the first pipe by laser welding, wherein the quick-insertion end of the female joint is provided with an elastic locking spring; The male connector includes a male connector body, one end of the male connector body is a male connector quick-insert end, and the other end is a male connector connection end that is fixedly connected with the second pipe fitting, wherein the outer surface of the male connector quick-insert end is ringed There is a first clasp groove, and the first clasp groove is used for clamping and fixing the elastic lock spring so that the quick-inserting end of the male connector and the quick-inserting end of the female connector are clamped and fixed. 2. A laser-welded quick-plug joint according to claim 1, wherein the elastic lock spring is integrally injection-molded with the female joint body, and is formed by extending along the quick-insert end of the female joint toward the welding end of the female joint The locking end is set separately from the body of the female joint. 3. A laser-welded push-in connector according to claim 1 or 2, characterized in that, there is a locking ring between the first snap ring groove and the second snap ring groove at the quick-plug end of the male connector. The slope of the end stop. 4. A laser welding type push-in joint according to claim 1, wherein the male joint further comprises a first sealing ring, and the outer surface of the male joint is also provided with a second snap ring groove, The first sealing ring is assembled in the second snap ring groove. 5. A laser welding type push-in joint according to claim 1, characterized in that, the first pipe extends to the welding end of the female joint for insertion and is sealed and fixed by laser welding or the welding end of the female joint extends It is plugged into the first pipe and sealed and fixed by laser welding. 6. A laser welding type push-in joint according to claim 1, wherein the female joint further comprises a welding sleeve, the welding sleeve is made of laser-transparent material, and the first pipe and the female joint The welding ends are respectively inserted into the welding sleeves for splicing and fixed by laser welding of the welding sleeves. 7 . The laser welding type push-in joint according to claim 1 , characterized in that, the connecting end of the male joint and the second pipe are threaded or laser welded. 8 . The laser welding type push-in joint according to claim 7 , wherein when the connecting end of the male joint is screwed to the second pipe fitting, the connecting end of the male joint is made of metal. 9 . 9. A laser welding type push-in joint as claimed in claim 7, characterized in that, when the connecting end of the male joint is screwed to the second pipe fitting, the connecting end of the male joint is also provided with a second sealing ring and A third snap ring groove is opened, and the second sealing ring is assembled in the third snap ring groove and seals the connecting end of the male joint and the second pipe piece. 10. A laser welding type push-in connector according to claim 1, characterized in that, the first pipe is a nylon pipe, and the second pipe is a vehicle-mounted valve body or a pump body or a nylon pipe.