Pipeline joint structure for cooling system

Abstract

The utility model discloses a pipeline joint structure for a cooling system, which comprises a transverse connecting part, a first through hole and a second through hole are arranged in the transverse connecting part, and the first through hole and the second through hole are arranged in a T-shaped structure; a rubber part is arranged outside the longitudinal inserting part, the longitudinal inserting part and the rubber part are formed into a whole in an injection molding mode, and the rubber part protrudes out of the periphery of the longitudinal inserting part; and the transverse connecting part and the longitudinal inserting part are welded into a whole. According to the technical scheme, the longitudinal inserting part is wrapped by the rubber part, namely the rubber part and the longitudinal inserting part are integrally formed through injection molding, and compared with the prior art that a sealing ring is embedded in a groove, the rubber part can be effectively prevented from falling off, so that the stability of the pipeline joint is greatly enhanced, and the sealing performance of the pipeline joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to a pipe joint structure used in a cooling system. Background Art

[0002] As the core part of electric vehicles, the battery pack cooling system is currently mostly liquid-cooled. It needs to be connected to the battery pack cooling plate through a joint, and the sealing performance of the joint is particularly important when the pipes are connected. The existing cooling system's three-way joint has a groove on the outer ring of the joint part at the radial end, and a sealing ring is embedded in the groove to seal during connection. However, after long-term use feedback, it is known that the sealing ring is prone to fall off due to axial movement, and the falling of the sealing ring is likely to cause leakage of the coolant in the cooling system, affecting the heat dissipation performance of the vehicle's battery pack. If the sealing rubber is directly coated on the radial end of the three-way joint by injection, the process is complicated and difficult to implement, and the cost is relatively high. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provides a pipe joint structure for a cooling system, which is mainly used to solve the problem that a sealing ring on a joint is easy to fall off.

[0004] The utility model is realized by the following technical solutions:

[0005] The pipe joint structure used for the cooling system includes:

[0006] A transverse connecting portion, wherein the interior of the transverse connecting portion has a first through hole and a second through hole, and the first through hole and the second through hole are arranged in a "T"-shaped structure;

[0007] A longitudinal plug-in portion, wherein a rubber piece is disposed on the outside of the longitudinal plug-in portion, the longitudinal plug-in portion and the rubber piece are integrally formed by injection molding, and the rubber piece protrudes from the outer periphery of the longitudinal plug-in portion;

[0008] The transverse connecting portion and the longitudinal inserting portion are welded into one body.

[0009] The utility model is further configured as follows: an adhesive layer is provided between the longitudinal plug-in portion and the rubber member.

[0010] The utility model is further configured as follows: a first protrusion is arranged on the top of the longitudinal plug-in portion, a second protrusion is arranged on the lower outer wall of the longitudinal plug-in portion, and an annular filling groove is formed between the first protrusion and the second protrusion.

[0011] The utility model is further configured as follows: the outer wall of the second protrusion has at least one glue inlet.

[0012] The utility model is further configured as follows: at least one annular step surface 1 is provided between the upper outer wall of the longitudinal inserting portion and the first protrusion.

[0013] The utility model is further configured as follows: the outer side of the second through hole has an annular step surface 2;

[0014] The lower outer wall of the longitudinal inserting portion is inserted into the second through hole and connected to the transverse connecting portion.

[0015] The utility model discloses a pipe joint structure for a cooling system. Compared with the prior art:

[0016] The technical solution covers the rubber part on the outside of the longitudinal plug-in part, that is, the rubber part and the longitudinal plug-in part are injection-molded as one body. Compared with the prior art in which a sealing ring is embedded in the groove, the rubber part can be effectively prevented from falling off, so that the stability of the pipe joint is greatly enhanced, and the sealing performance of the pipe joint is improved; the technical solution firstly injection-moldes the rubber part on the longitudinal plug-in part, and then laser welds the transverse connecting part and the longitudinal plug-in part into one body. The design is novel, the process is simple, the cost is saved, and it is convenient for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the transverse connecting portion of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the longitudinal plug-in portion of the utility model.

[0021] The numbers and letters in the figure represent the corresponding component names:

[0022] Among them: 100, transverse connecting part; 200, longitudinal plug-in part; 300, rubber part; 400, filling groove; 101, first through hole; 102, second through hole; 103, step surface 2; 201, first protrusion; 202, second protrusion; 203, glue inlet; 204, step surface 1. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and through specific implementation methods. Among them, the accompanying drawings are only used for exemplary descriptions, and only represent schematic diagrams rather than physical drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] See also Figures 1 to 4As shown, a pipe joint structure for a cooling system comprises: a transverse connecting portion 100, wherein the interior of the transverse connecting portion 100 has a first through hole 101 and a second through hole 102, the first through hole 101 and the second through hole 102 are arranged in a "T"-shaped structure, the first through hole 101 is connected to the second through hole 102, the transverse connecting portion 100 is a circular tubular structure, and the two ends of the transverse connecting portion 100 are used to connect with an external pipeline, the first through hole 101 is a horizontal through hole, and the second through hole 102 is a longitudinal through hole; a longitudinal plug-in portion 200, wherein the longitudinal plug-in portion 200 is a circular tubular structure, and a rubber member 300 is arranged on the exterior of the longitudinal plug-in portion 200, the longitudinal plug-in portion 200 and the rubber member 300 are injection-molded as a whole, and the rubber member 300 protrudes from the longitudinal plug-in portion 200. The outer periphery of the longitudinal plug-in part 200; the longitudinal plug-in part 200 is used to connect with the cooling system of the power battery pack, the rubber member 300 is covered on the outside of the longitudinal plug-in part 200, the rubber member 300 protrudes from the longitudinal plug-in part 200, that is, part of the rubber member 300 protrudes from the outer periphery of the longitudinal plug-in part 200, the longitudinal plug-in part 200 is plugged into the interface of the cooling system, and sealing is achieved by the protruding part of the rubber member 300; the transverse connecting part 100 and the longitudinal plug-in part 200 are welded as a whole. Preferably, the transverse connecting part 100 and the longitudinal plug-in part 200 are laser welded as a whole. The transverse connecting part 100 and the longitudinal plug-in part 200 are both made of plastic, and the longitudinal plug-in part 200 is welded to the outside of the second through hole 102 of the transverse connecting part 100. In the present technical solution, the transverse connection part 100 and the longitudinal plug part 200 are first processed by injection molding, and then the rubber part 300 is coated on the outside of the longitudinal plug part 200 by injection, and then the transverse connection part 100 and the longitudinal plug part 200 are welded together by laser welding. Since the rubber part 300 is coated on the outside of the longitudinal plug part 200, the longitudinal plug part 200 and the rubber part 300 are in close contact, thereby forming a stable structure, so that the longitudinal plug part 200 and the rubber part 300 can effectively avoid the falling off of the rubber part 300 when moving axially compared with the sealing ring structure of the prior art, and the sealing performance is greatly guaranteed; at the same time, the transverse connection 100 is laser welded together with the longitudinal plug part 200, which can also ensure the strength and sealing performance of the entire pipe joint; compared with directly injecting the rubber part into the groove at the radial end of the joint, the present technical solution has low process difficulty and low cost, and can be mass-produced.

[0026] See also Figure 1As shown, the outer surfaces of both ends of the transverse connecting part 100 are provided with connecting parts, and the connecting parts are arranged outside the first through hole. The connecting parts are annular protrusions. The transverse connecting part 100 can be connected to an external pipeline, and the connecting parts play a role in connecting the external pipeline. If it is necessary to further improve the sealing of the connection, a sealing ring can be sleeved on the outside of the transverse connecting part 100 to ensure the stability and sealing of the connection.

[0027] Preferably, a bamboo joint anti-detachment structure may be further provided on the outer surface of the transverse connecting part 100; the bamboo joint anti-detachment structure is arranged on the outside of the first through hole 101, and the transverse connecting part 100 can be connected to an external pipeline. The setting of the bamboo joint anti-detachment structure can be stably connected to the external pipeline, and if it is necessary to further improve its sealing effect, a sealing ring may be provided on the bamboo joint anti-detachment structure to ensure the stability and sealing of the connection.

[0028] As a preferred embodiment, an adhesive layer is further provided between the longitudinal plug-in portion 200 and the rubber member 300; the adhesive layer is mainly made of glue. Before the injection process, glue can be first applied to the longitudinal plug-in portion 200, and then injection is performed using a mold, which can make the connection between the longitudinal plug-in portion 200 and the rubber member 300 tighter and more stable.

[0029] See also Figure 1 , Figure 2 and Figure 4 As shown, the top of the longitudinal plug-in portion 200 is provided with a first protrusion 201, and the lower outer wall of the longitudinal plug-in portion 200 is provided with a second protrusion 202. The diameter of the first protrusion 201 is greater than the diameter of the second protrusion 202. An annular filling groove 400 is formed between the first protrusion 201 and the second protrusion 202. In the present technical solution, a filling groove 400 for molding the rubber member 300 is formed between the first protrusion 201 and the second protrusion 202 on the longitudinal plug-in portion 200. The rubber member 300 is molded in the filling groove 400 and cooperates with the first protrusion 201 and the second protrusion 202. The rubber member 300 is in close contact with the first protrusion 201, the second protrusion 202, and the upper outer wall of the longitudinal plug-in portion 200. Compared with the embedded sealing ring form of the prior art, the present technical solution can prevent the rubber member 300 from falling off by increasing the contact area in this way. It is worth noting that, refer to Figure 2 As shown, the rubber member 300 is wrapped around the outside of the second protrusion 202 , and the bottom surface of the rubber member 300 is flush with the bottom surface of the second protrusion 202 .

[0030] See also Figure 4As shown, the outer wall of the second protrusion 202 has at least one glue inlet 203; the setting of the glue inlet 203 is mainly used for the entry of rubber compound during injection, and the glue inlet 203 is connected to the filling groove 400. For ease of understanding, Figure 4 Taking the angle as an example, when performing injection, the longitudinal plug-in part 200 is first inverted, and then the longitudinal plug-in part 200 is fixed in the mold, and then the rubber is injected into the filling groove 400 through the glue inlet 203, that is, the rubber flows from the glue inlet 203 of the second protrusion 202 to the filling groove 400 of the longitudinal plug-in part 200 to fill and form the rubber part 300. It is worth noting that there is rubber in the glue inlet 203, that is, the rubber part 300 includes the rubber located in the filling groove 400 and the rubber inlet 203. Therefore, the setting of the glue inlet 203 also increases the contact area between the longitudinal plug-in part 200 and the rubber part 300, so that the rubber part 300 is not easy to separate from the longitudinal plug-in part 200.

[0031] See also Figure 2 As shown, at least one annular step surface 204 is provided between the upper outer wall of the longitudinal plug-in portion 200 and the first protrusion 201; the provision of the step surface 204 can increase the contact area between the rubber member 300 and the longitudinal plug-in portion 200. At the same time, this structural design also forms an undercut structure between the rubber member 300 and the longitudinal plug-in portion 200 to prevent the rubber member 300 from loosening; in addition, it should be noted that the top surface of the rubber member 300 is in contact with the lower surface of the first protrusion 201.

[0032] See also Figures 2 to 4 As shown, the outer side of the second through hole 102 has an annular stepped surface 103; the lower outer wall of the longitudinal plug-in portion 200 is plugged into the second through hole 102 and connected to the transverse connecting portion 100; in the above technical solution, the bottom surface of the second protrusion 202 is in contact with the outer top surface of the second through hole 102, the lower outer wall of the longitudinal plug-in portion 200 extends into the second through hole 102 and contacts with the inner wall of the second through hole 102, the second protrusion 202 mainly plays a limiting role, and the contact surface position of the longitudinal plug-in portion 200 and the transverse connecting portion 100 is integrated by laser welding to ensure overall strength and stability.

[0033] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A pipe joint structure for a cooling system, characterized in that: include: A transverse connecting portion (100), wherein the interior of the transverse connecting portion (100) comprises a first through hole (101) and a second through hole (102), and the first through hole (101) and the second through hole (102) are arranged in a "T"-shaped structure; A longitudinal plug-in portion (200), wherein a rubber member (300) is disposed outside the longitudinal plug-in portion (200), the longitudinal plug-in portion (200) and the rubber member (300) are injection-molded as one piece, and the rubber member (300) protrudes from the outer periphery of the longitudinal plug-in portion (200); The transverse connecting portion (100) and the longitudinal inserting portion (200) are welded into one body.

2. The pipe joint structure for a cooling system according to claim 1, characterized in that: An adhesive layer is also provided between the longitudinal plug-in portion (200) and the rubber member (300).

3. The pipe joint structure for a cooling system according to claim 1, characterized in that: The top of the longitudinal plug-in portion (200) is provided with a first protrusion (201), the lower outer wall of the longitudinal plug-in portion (200) is provided with a second protrusion (202), and an annular filling groove (400) is formed between the first protrusion (201) and the second protrusion (202).

4. The pipe joint structure for a cooling system according to claim 3, characterized in that: The outer wall of the second protrusion (202) has at least one glue inlet (203).

5. The pipe joint structure for a cooling system according to claim 3, characterized in that: At least one annular step surface (204) is provided between the upper outer wall of the longitudinal plug-in portion (200) and the first protrusion (201).

6. The pipe joint structure for a cooling system according to claim 3, characterized in that: The outer side of the second through hole (102) has an annular stepped surface 2 (103); The lower outer wall of the longitudinal inserting portion (200) is inserted into the second through hole (102) and connected to the transverse connecting portion (100).

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