CN210510664U

CN210510664U - Laser welding type quick connector

Info

Publication number: CN210510664U
Application number: CN201921542315.3U
Authority: CN
Inventors: 夏雷鸣; 高晓磊; 赵立永; 赵建明; 赵艳
Original assignee: Hebei Chinaust Automotive Plastics Co Ltd
Current assignee: Hebei Chinaust Automotive Plastics Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-12
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a laser welding type quick connector, which is used for connecting a first pipe fitting and a second pipe fitting in an automobile pipeline, and comprises a female connector and a male connector which can be inserted into the female connector, wherein the female connector comprises a female connector body, one end of the female connector body is a female connector quick connector end, the other end of the female connector body is a female connector welding end which is sealed and fixed with the first pipe fitting by laser welding, and the female connector quick connector end is provided with an elastic locking spring; the male joint includes the male joint body, the one end of male joint body is male joint fast spigot end, and the other end is the male joint link fixed with second pipe connection, wherein the surface ring of male joint fast spigot end is equipped with first snap ring groove, first snap ring groove is used for the fixed elasticity locking spring of joint to make male joint fast spigot end is fixed with female joint fast spigot end joint, realizes that the fast-assembling of male joint and female joint is quick-release, and the spare part quantity that significantly reduces has reduced the processing cost, has reduced the cooperation degree of difficulty between each spare part again.

Description

Laser welding type quick connector

Technical Field

The invention relates to the technical field of quick connectors of automobile fluid transmission pipelines, in particular to a laser welding type quick connector.

Background

There are two general types of quick-connect fittings currently on the market for automotive fluid transfer nylon tubing: the bamboo joint type connecting pipe male-female joint is matched and locked for use, the bamboo joint type male-female plug-in joint has poor high-low temperature alternating sealing performance, high-temperature tensile insertion and high-temperature pressure-resistant blasting performance, the sharp angle of a bamboo joint of a metal piece is difficult to guarantee to influence the sealing performance and tensile performance, and the matching of the bamboo joint of an injection molding piece and a nylon pipe has poor high-low temperature alternating sealing performance; the other type is a direct-insertion type quick connector, one end of the connector is arranged on a vehicle-mounted valve body (or a pump body), and a hollow nylon pipe is inserted into the connector for automatic locking connection.

The direct-insertion type quick connector can be divided into two types according to the using modes, one type is an easy-to-lock and easy-to-open quick connector, the structure is simple, the direct-insertion type quick connector is suitable for gas circuit connection of a pneumatic equipment tool, but is not suitable for a pneumatic braking system of a heavy truck commercial vehicle, and the safety risk that the direct-insertion type quick connector is easy to disengage to cause brake failure exists; one is a quick connector which is easy to lock and not easy to open, and has a complex structure and a high risk coefficient. The plug-in quick connector can also be divided into two types according to materials: one is a joint of a metal main body part and a rubber sealing ring, the metal part has poor corrosion resistance, is easy to rust and assemble and is not easy to disassemble, and the two-piece clamping ring and the metal welding part have greater risk; the other type is that the external part is an injection molding part, and the internal parts are metal parts and rubber parts, so that the assembly is easy and the disassembly is easy, but the falling of an artificial or non-artificial air pipe is easy to occur, and the safety risk exists.

In conclusion, the direct-insertion quick connector in the prior art has the problems of complex structure, more parts, higher processing cost, difficulty in ensuring the quality of the parts, difficulty in controlling the mutual matching of the parts, easiness in causing the falling of artificial or non-artificial pipes, great safety risk and the like.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the laser welding type quick connector, the quick insertion and quick detachment can be realized by clamping the male connector and the female connector through the locking spring, and the laser welding is adopted by matching the female connector and the first pipe fitting, so that the number of parts is greatly reduced, the processing cost is reduced, the matching difficulty among the parts is reduced, and the overall performances of the quick connector such as the matching tightness, the stretchability and the like are greatly enhanced.

The technical effect to be achieved by the invention is realized by the following scheme: a laser welding type quick connector is used for connecting a first pipe fitting and a second pipe fitting in an automobile pipeline and comprises a female connector and a male connector which can be inserted into the female connector in a pulling mode, wherein the female connector comprises a female connector body, one end of the female connector body is a female connector quick connector end, the other end of the female connector body is a female connector welding end which is fixedly sealed with the first pipe fitting in a laser welding mode, and the female connector quick connector end is provided with an elastic locking spring; the male joint comprises a male joint body, one end of the male joint body is a male joint quick-plugging end, the other end of the male joint body is a male joint connecting end connected and fixed with a second pipe fitting, a first clamping ring groove is annularly arranged on the outer surface of the male joint quick-plugging end, and the first clamping ring groove is used for clamping and fixing an elastic locking spring to enable the male joint quick-plugging end to be clamped and fixed with the female joint quick-plugging end.

Preferably, the elastic locking spring is integrally injection-molded with the female joint body, and extends along the female joint quick-insertion end toward the female joint welding end to form a locking end, and the locking end is separately provided from the female joint body.

Preferably, an inclined plane for supporting the unlocking stopping end is further arranged between the first clamping ring groove and the second clamping ring groove of the male joint quick-plugging end.

Preferably, the male joint further comprises a first sealing ring, a second clamping ring groove is further annularly arranged on the outer surface of the male joint, and the first sealing ring is assembled in the second clamping ring groove.

Preferably, the first pipe member extends into the female joint welding end to be inserted and fixed in a sealing manner by laser welding or the female joint welding end extends into the first pipe member to be inserted and fixed in a sealing manner by laser welding.

Preferably, the female joint further comprises a welding sleeve, the welding sleeve is made of a laser-transmitting material, and the welding ends of the first pipe fitting and the female joint are respectively inserted into the welding sleeve to be spliced and fixed through the welding sleeve in a laser welding mode.

Preferably, the male joint connecting end and the second pipe fitting are connected through threads or are welded through laser.

Preferably, when the male joint connecting end is in threaded connection with the second pipe fitting, the male joint connecting end is made of a metal material.

Preferably, when the male joint connecting end is in threaded connection with the second pipe fitting, the male joint connecting end is further provided with a second sealing ring and a third clamping ring groove, and the second sealing ring is assembled in the third clamping ring groove and seals the male joint connecting end and the second pipe fitting.

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

The invention has the following advantages:

1. the male joint and the female joint can be quickly assembled and disassembled by the elastic locking spring of the female joint, so that the number of parts is greatly reduced, the processing cost is reduced, and the matching difficulty among the parts is reduced;

2. the elastic locking spring is integrally formed by injection molding, so that the number of parts of the quick connector can be effectively reduced, the performance risk points of processing and assembling of the quick connector are reduced, the use performance is greatly improved on the premise of ensuring safety, and the quick assembly and the quick disassembly can be realized by using tools;

3. the welding end of the female joint is spliced with the first pipe fitting and sealed and fixed through laser welding, so that the welding end of the female joint and the first pipe fitting are integrally welded, the welding risk points are few, the control is easy, the welding area is small, and the sealing performance and the tensile property are better;

4. insert respectively through first pipe fitting and female joint welding end and splice in the welding sleeve and fixed through welding sleeve laser welding for the female joint body only need ordinary injection moulding material can, need not specific laser material that passes through, the welding sleeve is preferred to be primary colour transparent material, and laser transmissivity is high and stable, and laser welding is efficient and excellent performance, and can follow the outside and detect the welding condition.

Drawings

FIG. 1 is a schematic perspective view of a female connector of a laser welding type quick connector according to the present invention;

FIG. 2 is a schematic cross-sectional view of a female connector of a laser welded quick connector according to the present invention;

FIG. 3 is a schematic perspective view of a male connector of a laser welding type quick connector according to the present invention;

FIG. 4 is a schematic cross-sectional view of a male connector of a laser welded quick connector according to the present invention;

FIG. 5 is a schematic cross-sectional view of a laser welded quick connector according to the present invention;

FIG. 6 is a schematic cross-sectional view of another welding method for the female connector and the first tubular member of the laser welded quick connector according to the present invention;

FIG. 7 is a schematic cross-sectional view of a laser welded quick connector according to the present invention, wherein the male connector is laser welded to a second pipe;

fig. 8 is a schematic perspective view of the detaching tool for laser welding type quick connector according to the present invention.

Detailed Description

The invention is described in detail below with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 5, a laser welding type quick connector according to an embodiment of the present invention is used for connecting a first pipe a and a second pipe B in an automobile pipeline, and includes a female connector 100 and a male connector 200 that is removably inserted into the female connector 100, where the male connector 200 and the female connector 100 are generally cylindrical and hollow for fluid communication. The first pipe fitting A can be a nylon pipe, and the second pipe fitting B can be an on-vehicle valve body or a pump body or a nylon pipe.

The female joint 100 comprises a female joint body 110, one end of the female joint body 110 is a female joint quick-insertion end 120, the female joint quick-insertion end 120 is used for being connected with a male joint 200 in a quick-insertion mode, the other end of the female joint body 110 is a female joint welding end 130, the female joint welding end 130 is used for being fixed with a first pipe fitting A in a sealing mode through laser welding, and the female joint quick-insertion end 120 is provided with an elastic locking spring 121.

The male joint 200 comprises a male joint body 210 and a first sealing ring 220, one end of the male joint body 210 is a male joint quick-plugging end 230, the male joint quick-plugging end 230 is used for being quickly plugged and connected with the female joint 100, the other end of the male joint body 210 is a male joint connecting end 240, the male joint connecting end 240 is used for being fixedly connected with a second pipe fitting B, a first clamping ring groove 231 and a second clamping ring groove 232 are annularly arranged on the outer surface of the male joint quick-plugging end 230, the first clamping ring groove 231 is used for clamping and fixing an elastic locking spring 121, and the second clamping ring groove 232 is used for assembling the first sealing ring 220 so that the male joint quick-plugging end 230 is hermetically fixed when being plugged with the female joint quick-plugging end 120.

Specifically, the elastic locking spring 121 is preferably formed by injection molding integrally with the female coupling body 110, and extends along the female coupling quick-insertion end 120 toward the female coupling welding end 130 to form a locking end, which is disposed apart from the female coupling body 110 so that the locking end has certain elasticity. Still be equipped with the inclined plane 233 that is used for propping to open the lock between the first snap ring groove 231 of male joint quick-witted end 230 and the second snap ring groove 232, when male joint 200 is pegged graft with female joint 100, first sealing washer 220 assembles in second snap ring groove 232, inserts male joint quick-witted end 230 towards female joint quick-witted end 120, the locking end of elasticity locking spring 121 is strutted by inclined plane 233 and is removed to first snap ring groove 231 in shrinkage and fixed with first snap ring groove 231 joint, and first sealing washer 220 is fixed with the internal surface extrusion seal of female joint quick-insertion end 120 simultaneously, realizes the grafting of male joint 200 and female joint 100 and seals fixedly. In the embodiment of the present invention, when the male connector 200 is detached from the female connector 100, the locking end is opened outward by external force to unlock the first snap ring groove 231, and the male connector 200 is pulled outward.

According to the quick connector of the embodiment of the invention, the male connector 200 and the female connector 100 can be quickly assembled and disassembled by the elastic locking spring 121 of the female connector 100, so that the number of parts is greatly reduced, the processing cost is reduced, and the matching difficulty among the parts is reduced.

Female joint end 120 is inserted soon through adopting integrative injection moulding with elasticity locking spring 121, thereby can effectively reduce the performance risk point of the processing of quick-witted bayonet joint and assembly by the reduction of quick-witted bayonet joint part quantity, under the prerequisite of guaranteeing safety, performance has great promotion, both can realize rapid Assembly, can use the instrument again to realize dismantling fast. Preferably, the two elastic locking springs 121 are symmetrically disposed at the female coupling quick-insertion end 120, and the locking ends of the elastic locking springs 121 can be bent inward so that the locking ends can be more firmly engaged in the first engagement ring grooves 231. The inner surface of the female quick-insert end 120 is also formed with a bevel surface adapted to the bevel surface 233 of the male quick-insert end 230 so that the surfaces of the male connector 200 and the female connector 100 that are inserted together are effectively sealed.

The male connector body 210 is further provided with a boss 250 for plugging and positioning, and when the male connector 200 is completely plugged and sealed with the female connector 100, the boss 250 is just in abutting contact with the outer side of the plugging end of the female connector 100.

In the embodiment of the present invention, preferably, there are two second snap ring grooves 232, which are arranged at the male coupling quick-insertion end 230 in parallel at intervals, and thus there are two first sealing rings 220.

As an improvement of the embodiment of the present invention, the female joint welding end 130 and the first pipe fitting a are fixed in a manner that the first pipe fitting a extends into the female joint welding end 130 to be inserted and fixed in a sealing manner by laser welding (as shown in fig. 5), and then the female joint welding end 130 is made of a laser-transparent material; the female joint welding end 130 extends into the first pipe fitting a and is inserted and sealed and fixed by laser welding, and the first pipe fitting a is made of a laser-transparent material. The female joint welding end 130 is integrally welded with the first pipe fitting A, so that the welding risk points are few, the control is easy, the welding area is small, and the sealing performance and the tensile property are better. Preferably, the inside 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 fitting a.

As shown in fig. 6, as another modification of the embodiment of the present invention, the female joint welding end 130 is a non-laser-transparent material, the female joint 100 further includes a welding sleeve 140, the welding sleeve 140 is a laser-transparent material, and the first pipe fitting a and the female joint welding end 130 are respectively inserted into the welding sleeve 140 to be spliced and fixed by laser welding through the welding sleeve 140. Because the female joint welding end 130 is a non-laser-transparent material, the female joint body 110 only needs a common injection molding material, and does not need a specific laser-transparent material, the welding sleeve 140 is preferably a primary-color transparent material, the laser transmittance is high and stable, the laser welding efficiency is high, the performance is excellent, and the welding condition can be detected from the outside.

According to the embodiment of the invention, the female joint 100 and the first pipe fitting A are subjected to laser welding, so that the connection sealing performance of the female joint 100 and the first pipe fitting A is greatly improved.

As an improvement of the embodiment of the present invention, the male joint connecting end 240 of the male joint body 210 and the second pipe B may be connected by a thread (as shown in fig. 5) or laser welding (as shown in fig. 7), so that the male joint 200 can meet the requirements of different application environments, and can provide a design and use scheme with better performance according to actual situations. It should be understood that the male connection end 240 may also be integrally molded with the second tube member B, as the case may be, and is selected as desired.

When the male joint connecting end 240 of the male joint body 210 is inserted into the second pipe fitting B and is welded by laser, it is welded to the female joint body 110 and the first pipe fitting a, and when the second pipe fitting B is inserted into the male joint connecting end 240 and is sealed and fixed by laser welding, the male joint connecting end 240 is made of a laser-transparent material; when the male coupling end 240 is inserted into the second pipe member B and hermetically fixed thereto by laser welding (as shown in fig. 7), the second pipe member B is made of a laser-transparent material. The male joint connecting end 240 is integrally welded with the second pipe fitting B, so that the welding risk points are few, the control is easy, the welding area is small, and the sealing performance and the tensile property are better.

When the male coupling end 240 of the male coupling body 210 is coupled to the second pipe member B and fixed by laser welding, the male coupling 200 further includes a welding sleeve 140 (the welding sleeve 140 is identical to the female coupling 100, and is not shown), the welding sleeve 140 is made of a laser-transparent material, and the second pipe member B and the male coupling end 240 are respectively inserted into the welding sleeve 140 and coupled and fixed by laser welding. Because the male joint connecting end 240 is a non-laser-transparent material, the male joint body 210 only needs a common injection molding material, and does not need a specific laser-transparent material, the welding sleeve 140 is preferably a primary-color transparent material, the laser transmittance is high and stable, the laser welding efficiency is high, the performance is excellent, and the welding condition can be detected from the outside.

The laser welding between the male joint connection end 240 and the second pipe fitting B may be laser welding between the metal male joint 200 and the metal second pipe fitting B, or laser welding between the non-metal male joint 200 and the non-metal second pipe fitting B, for example, laser welding is adopted between the injection molding male joint 200 and the first pipe fitting a.

When the male coupling end 240 is threadedly coupled to the second tubular member B, the male coupling end 240 is a threaded end that is threadedly coupled to the second tubular member B. Further, the male joint connection end 240 is preferably made of a metal material, so that the connection tightness is effectively ensured. The threaded end of the male connector end 240 may be a female connection or a male connection (as shown in fig. 5). Further, the male joint connecting end 240 is further provided with a second sealing ring for sealing connection, a third clamping ring groove can be specifically formed in the male joint connecting end 240, the second sealing ring is assembled in the third clamping ring groove, the second sealing ring is extruded when the male joint connecting end 240 is in threaded connection with the second pipe fitting B, and the second sealing ring extrudes the boss 250 of the male joint connecting end 240 again so that the male joint connecting end 240 is tightly connected with the second pipe fitting B in a sealing manner.

In the embodiment of the present invention, the male connector 200 and the female connector 100 can be disassembled manually, or a disassembling tool 300 as shown in fig. 8 can be used, the disassembling tool 300 is similar to a tool pliers, and includes two pliers heads 310 for expanding the elastic locking spring 121, when the male connector 200 and the female connector 100 need to be disassembled, the pliers heads 310 extend into the elastic locking spring 121 and apply a force to the pliers heads 310 to unlock the elastic locking spring 121 from the first annular clamping groove 231, and then the male connector 200 is pulled out from the female connector 100, so as to achieve quick disassembling.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention, and these modifications or equivalent substitutions cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser welding type quick connector is used for connecting a first pipe fitting and a second pipe fitting in an automobile pipeline and comprises a female connector and a male connector which can be inserted into the female connector in a pulling mode, and is characterized in that the female connector comprises a female connector body, one end of the female connector body is a female connector quick connector end, the other end of the female connector body is a female connector welding end which is fixedly sealed with the first pipe fitting in a laser welding mode, and the female connector quick connector end is provided with an elastic locking spring; the male joint comprises a male joint body, one end of the male joint body is a male joint quick-plugging end, the other end of the male joint body is a male joint connecting end connected and fixed with a second pipe fitting, a first clamping ring groove is annularly arranged on the outer surface of the male joint quick-plugging end, and the first clamping ring groove is used for clamping and fixing an elastic locking spring to enable the male joint quick-plugging end to be clamped and fixed with the female joint quick-plugging end.

2. The laser welded quick connector of claim 1, wherein the resilient locking spring is integrally injection molded with the female connector body and extends along the female connector quick connector end toward the female connector weld end to form a locking end, the locking end being spaced apart from the female connector body.

3. The laser welding type quick connector as claimed in claim 1 or 2, wherein a slope for supporting the lock stopper is further provided between the first ring groove and the second ring groove of the quick connector end of the male connector.

4. The laser welded quick connector as recited in claim 1, wherein the male connector further comprises a first sealing ring, the outer surface of the male connector further comprising a second snap ring groove, the first sealing ring fitting within the second snap ring groove.

5. A laser welded quick connector as claimed in claim 1 wherein the first tubular member extends into the female connector weld end and is sealingly secured by laser welding or the female connector weld end extends into the first tubular member and is sealingly secured by laser welding.

6. The laser welding type quick connector as claimed in claim 1, wherein the female connector further comprises a welding sleeve, the welding sleeve is made of a laser-transparent material, and the welding ends of the first pipe and the female connector are respectively inserted into the welding sleeve to be spliced and fixed through the welding sleeve by laser welding.

7. A laser welded quick connector as claimed in claim 1 wherein the male connector end is threadably connected to the second tubular member or laser welded to the second tubular member.

8. The laser welded quick connector as recited in claim 7 wherein the male connector end is metal when the male connector end is threadably engaged with the second tubular member.

9. The laser welding type quick connector as claimed in claim 7, wherein when the male connector end is screwed with the second pipe, the male connector end is further provided with a second sealing ring and a third snap ring groove, and the second sealing ring is fitted in the third snap ring groove and seals the male connector end and the second pipe.

10. The laser welding type quick connector as claimed in claim 1, wherein the first pipe is a nylon pipe, and the second pipe is a vehicle valve body, a pump body or a nylon pipe.