Welding structure of connecting pipe

Abstract

The utility model discloses a welding structure of a connecting pipe, which belongs to the technical field of pipeline connecting fittings, and comprises a pipe body and a seat body, the seat body is provided with an assembly hole, the assembly hole is provided with a positioning step, the pipe body extends into the assembly hole and is positioned on the positioning step, the outer wall of the pipe body and / or the assembly hole are / is provided with a flow guide groove for solder to pass through, and the flow guide groove is communicated with the seat body. The rear end of the pipe body and / or the positioning step are / is provided with interval grooves for solder to pass through, and the flow guide grooves are communicated with the interval grooves. According to the structure, the assembling stability of the pipe body and the base body can be improved, the side wall and the bottom between the pipe body and the base body can be filled with welding flux through mutual communication of the flow guide grooves and the interval grooves, the problems that in the prior art, the pipe body and the base body are prone to insufficient soldering, leakage and even disengagement are solved, and the service life of the pipe body is prolonged. And the finished connecting pipe can be judged to be qualified as long as the upper part and the lower part of the finished connecting pipe are welded and sealed, so that the production efficiency and the qualification rate judgment efficiency of the finished connecting pipe are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection accessories, in particular to a welding structure of a connection pipe. Background Art

[0002] The compressor is one of the important components in refrigeration and heat exchange equipment such as air conditioners or refrigerators. The compressor is usually equipped with a liquid accumulator, and the liquid accumulator and the compressor body need to be connected to each other through a connecting pipe so that the refrigerant enters the compressor from the liquid accumulator.

[0003] The connecting pipe in the prior art is formed by welding a copper pipe and an iron seat together, but the solder used for welding can only be applied to the surface between the copper pipe and the iron seat. When the copper pipe and the iron seat are resistance welded, the iron seat will generate a large amount of heat. The solder softens due to the heat and flows to a local position, resulting in a lack of solder in some positions between the copper pipe and the iron seat and a cold weld. As a result, the connecting pipe cannot be effectively sealed, and leakage or even detachment occurs during operation.

[0004] Therefore, further improvement is necessary. Utility Model Content

[0005] The utility model aims to provide a welding structure of a connecting pipe to overcome the shortcomings of the prior art.

[0006] A welding structure of a connecting pipe designed for this purpose comprises a pipe body and a seat body, wherein the seat body is provided with an assembly hole, the assembly hole is provided with a positioning step, the pipe body extends into the assembly hole, and the positioning action is performed on the positioning step, a guide groove for the passage of solder is provided on the outer wall of the pipe body and / or the assembly hole, a spacing groove for the passage of solder is provided on the rear end of the pipe body and / or the positioning step, and the guide groove is communicated with the spacing groove.

[0007] A protrusion is provided on the rear end of the tube body and / or the positioning step, and the rear end of the tube body and the positioning step are positioned with each other through the protrusion, and the spacing groove is formed.

[0008] The guide groove is provided with at least one and is recessed in the inner wall of the assembly hole along the axial direction of the assembly hole.

[0009] The protrusion is provided with at least one, and is protruded on the positioning step along the axial direction of the assembly hole.

[0010] The tube body and / or the assembly hole are provided with an insertion guide portion, and the tube body is guided by the insertion guide portion to be inserted into the assembly hole.

[0011] The extending guide portion is arranged in a ring shape along the front end of the assembly hole.

[0012] A radial convex ring is arranged at the rear side of the tube body, and the radial convex ring is guided by the insertion guide portion to extend into the assembly hole.

[0013] The tube body is provided with a tube body through hole, the positioning step is provided with a seat body through hole in a direction away from the assembly hole, the tube body through hole and the seat body through hole are arranged on the same axis, and the two are connected to each other.

[0014] The inner diameter of the radial convex ring is larger than the inner diameter of the tube body, and there is an arc, inclined, or right-angle transition between the two. The inner wall of the radial convex ring is in straight contact with the inner wall of the seat body through hole.

[0015] The diameter of the assembly hole is larger than the diameter of the seat body through hole, and there is an arc, inclined, or right-angle transition between the two.

[0016] The utility model improves the above structure, extends the tube body into the assembly hole, and positions it on the positioning step, so that the tube body can be positioned and assembled on the seat body, thereby improving the assembly stability of the two, and then utilizes the mutual connection of the guide groove and the spacing groove to enable the solder to be filled to the side wall and the bottom between the tube body and the seat body, thereby avoiding the problem that the solder in the prior art can only be applied to the surface, resulting in the tube body and the seat body being prone to cold welding, leakage or even separation, so as to improve the welding quality and use stability of the finished connecting pipe. At the same time, because the solder can be effectively filled to any position between the tube body and the seat body, the finished connecting pipe only needs to have welding seals at the top and bottom to be judged as qualified, thereby improving the production efficiency of the finished connecting pipe and the efficiency of judging the qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the assembly cross-sectional structure of an embodiment of the utility model.

[0020] Figure 4 for Figure 3 A in the figure is an enlarged structural diagram.

[0021] Figure 5 The figure is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0022] Figure 6 This is a schematic diagram of the exploded structure from another perspective of an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-Figure 6 The welding structure of the connecting pipe comprises a pipe body 1 and a seat body 2. The seat body 2 is provided with an assembly hole 2.1, and the assembly hole 2.1 is provided with a positioning step 2.2. The pipe body 1 extends into the assembly hole 2.1, and the positioning action is on the positioning step 2.2. A guide groove 2.3 for the solder to pass through is provided on the outer wall of the pipe body 1 and / or the assembly hole 2.1, and a spacing groove 2.4 for the solder to pass through is provided on the rear end of the pipe body 1 and / or the positioning step 2.2, and the guide groove 2.3 and the spacing groove 2.4 are connected to each other.

[0026] In this embodiment, the tube body 1 is inserted into the assembly hole 2.1 and positioned on the positioning step 2.2, so that the tube body 1 can be positioned and assembled on the seat body 2, thereby improving the assembly stability of the two. Subsequently, the guide groove 2.3 and the spacing groove 2.4 are connected to each other so that the solder can be filled into the side wall and the bottom between the tube body 1 and the seat body 2, thereby avoiding the problem that the solder in the prior art can only be applied on the surface, resulting in the tube body 1 and the seat body 2 being prone to cold welding, leakage or even separation, so as to improve the welding quality and use stability of the finished connecting pipe. At the same time, since the solder can be effectively filled into any position between the tube body 1 and the seat body 2, the finished connecting pipe only needs to have welding seals at the top and bottom to be judged as qualified, thereby improving the production efficiency of the finished connecting pipe and the efficiency of judging the qualified rate.

[0027] As a preferred solution of this embodiment, it may also have the following additional technical features:

[0028] A protrusion 2.5 is provided on the rear end of the tube body 1 and / or the positioning step 2.2. The rear end of the tube body 1 and the positioning step 2.2 are positioned with each other through the protrusion 2.5 and a spacing groove 2.4 is formed.

[0029] There is at least one guide groove 2.3, which is recessed on the inner wall of the assembly hole 2.1 along the axial direction of the assembly hole 2.1.

[0030] At least one protrusion 2.5 is provided and protrudes on the positioning step 2.2 along the axial direction of the assembly hole 2.1.

[0031] In this embodiment, six guide grooves 2.3 are provided, and the six guide grooves 2.3 are evenly distributed in a ring along the inner wall of the assembly hole 2.1. Three raised portions 2.5 are provided, and the three are evenly distributed along the ring surface of the positioning step 2.2. When the bracket tube body 1 and the seat body 2 are assembled with each other, four spacing grooves 2.4 are formed at the bottom of the two. The six guide grooves 2.3 and the four spacing grooves 2.4 are interconnected, so that the solder can be fully filled into the side walls and bottom of the tube body 1 and the seat body 2 through the six guide grooves 2.3 and the four spacing grooves 2.4.

[0032] In this embodiment, the guide groove is 1.5MM wide, recessed by 0.03-0.05mm, and runs from the front end of the inner wall of the assembly hole 2.1 to the positioning step 2.2, and the raised portion 2.5 is recessed by 1.5MM.

[0033] The tube body 1 and / or the assembly hole 2.1 are provided with an insertion guide portion 2.6, and the tube body 1 is guided by the insertion guide portion 2.6 to be inserted into the assembly hole 2.1.

[0034] The extending guide portion 2.6 is arranged in a ring shape along the front end of the assembly hole 2.1.

[0035] A radial convex ring 1.1 is arranged at the rear side of the tube body 1, and the radial convex ring 1.1 is guided into the assembly hole 2.1 by the insertion guide part 2.6.

[0036] By utilizing the guiding effect of the insertion guide portion 2.6, the radial convex ring 1.1 can be conveniently guided to be inserted into the assembly hole 2.1, so as to improve the convenience of assembling the tube body 1 and the seat body 2. In addition, the insertion guide portion 2.6 can also facilitate the addition and filling of solder, that is, the solder is placed in the insertion guide portion 2.6 without leakage, and the solder then enters the side wall between the tube body 1 and the seat body 2 through the guide groove 2.3, and then enters the bottom between the tube body 1 and the seat body 2 through the spacing groove 2.4.

[0037] The tube body 1 is provided with a tube body through hole 1.2, and the positioning step 2.2 is provided with a seat body through hole 2.7 in a direction away from the assembly hole 2.1. The tube body through hole 1.2 and the seat body through hole 2.7 are arranged on the same axis and are interconnected.

[0038] The inner diameter of the radial convex ring 1.1 is larger than the inner diameter of the tube body 1, and there is an arc, inclined, or right-angle transition between the two. The inner wall of the radial convex ring 1.1 is straightly connected with the inner wall of the seat body through hole 2.7.

[0039] The diameter of the assembly hole 2.1 is larger than the diameter of the seat body through hole 2.7, and there is an arc, inclined, or right-angle transition between the two.

[0040] In this embodiment, the radial convex ring 1.1 and the tube body 1 have an arc transition, the assembly hole 2.1 and the seat body through hole 2.7 have a right-angle transition and form a positioning step 2.2. At the same time, the inner wall of the radial convex ring 1.1 and the inner wall of the seat body through hole 2.7 are straightly connected, thereby improving the smoothness of the flow of the liquid.

[0041] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A welding structure of a connecting pipe, comprising a pipe body (1) and a seat body (2), characterized in that: The seat body (2) is provided with an assembly hole (2.1), the assembly hole (2.1) is provided with a positioning step (2.2), the tube body (1) extends into the assembly hole (2.1) and is positioned on the positioning step (2.2), a guide groove (2.3) for solder to pass through is provided on the outer wall of the tube body (1) and / or the assembly hole (2.1), a spacing groove (2.4) for solder to pass through is provided on the rear end of the tube body (1) and / or the positioning step (2.2), and the guide groove (2.3) and the spacing groove (2.4) are connected to each other.

2. The welding structure of the connecting pipe according to claim 1, characterized in that: A protrusion (2.5) is provided on the rear end of the tube body (1) and / or the positioning step (2.2); the rear end of the tube body (1) and the positioning step (2.2) are positioned with each other via the protrusion (2.5), and the spacing groove (2.4) is formed.

3. The welding structure of the connecting pipe according to claim 2 is characterized in that: At least one guide groove (2.3) is provided and is recessed on the inner wall of the assembly hole (2.1) along the axial direction of the assembly hole (2.1).

4. The welding structure of the connecting pipe according to claim 3 is characterized in that: The protrusion (2.5) is provided with at least one protrusion and is protruded on the positioning step (2.2) along the axial direction of the assembly hole (2.1).

5. The welding structure of the connecting pipe according to claim 1, characterized in that: An insertion guide portion (2.6) is provided on the tube body (1) and / or the assembly hole (2.1), and the tube body (1) is guided by the insertion guide portion (2.6) to be inserted into the assembly hole (2.1).

6. The welding structure of the connecting pipe according to claim 5, characterized in that: The insertion guide portion (2.6) is arranged in a ring shape along the front end of the assembly hole (2.1).

7. The welding structure of the connecting pipe according to claim 6, characterized in that: A radial convex ring (1.1) is arranged on the rear side of the tube body (1), and the radial convex ring (1.1) is guided by the insertion guide portion (2.6) to extend into the assembly hole (2.1).

8. The welding structure of the connecting pipe according to claim 7, characterized in that: The tube body (1) is provided with a tube body through hole (1.2), the positioning step (2.2) is provided with a seat body through hole (2.7) in a direction away from the assembly hole (2.1), the tube body through hole (1.2) and the seat body through hole (2.7) are arranged on the same axis, and the two are interconnected.

9. The welding structure of the connecting pipe according to claim 8, characterized in that: The inner diameter of the radial convex ring (1.1) is greater than the inner diameter of the tube body (1), and there is an arc, inclined, or right-angle transition between the two, and the inner wall of the radial convex ring (1.1) is in straight contact with the inner wall of the seat body through hole (2.7).

10. The welding structure of the connecting pipe according to claim 8, characterized in that: The diameter of the assembly hole (2.1) is greater than the diameter of the seat body through hole (2.7), and there is an arc, an inclined, or a right-angle transition between the two.

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