Two-way check valve connector

Abstract

The present invention discloses a two-way check and through joint, which comprises a female joint assembly and a male joint assembly. The female joint assembly includes a female joint housing, a first spring and a first pusher. The female joint housing has a first internal connection port. The first spring and the first pusher are located inside the female joint housing. Two ends of the first spring are respectively pressed against one end of the second pusher and the interior of the female joint housing. The first pusher can press against the first internal connection port and seal the first internal connection port. The male joint assembly includes a male joint housing, a second spring and a second pusher. The male joint housing has a second internal connection port. One end of the second spring and the second pusher are located inside the male joint housing. Two ends of the second spring are respectively pressed against one end of the second pusher and the interior of the male joint housing. The second pusher can press against the second internal connection port and seal the second internal connection port. The other end of the second pusher can pass through the first internal connection port and press against the other end of the first pusher.

Description

Technical Field

[0001] The present invention relates to a two-way check valve joint. Background Art

[0002] Currently, with the growth of new energy vehicles, the demand for quick battery pack replacement is also increasing. During the disassembly and replacement work, the inlet and outlet joints must have the ability to be opened and closed at both ends. At the interfaces between the inlets and outlets of the new energy battery pack and the charging pile module, joints are required to connect the pipelines to cool the battery pack and the charging module. Sealing without leakage is a basic function when they are connected. Considering the need for maintenance and battery pack replacement, the cooling medium should not flow out when the joint is disassembled. If it flows out, it will not only contaminate the equipment, but also cause irreparable losses in case of short circuit with the circuit. Therefore, a joint is needed that can not only work safely when connected, but also be sealed at both ends when disassembled to prevent liquid from flowing out. Currently, the industrial-grade one-way check valve joint is applied, which is made of metal, has a small diameter, a high price, and a large pressure drop, and is not practical for the fields mentioned above. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the joint between the battery pack and the charging module of new energy vehicles in the prior art cannot meet the two-way sealing requirement, and to provide a two-way check valve joint.

[0004] The present invention solves the above technical problem by the following technical solutions:

[0005] A two-way check valve joint, characterized in that it comprises:

[0006] A female joint assembly, the female joint assembly includes a female joint housing, a first spring and a first pushing member. The female joint housing has a first outer connection port and a first inner connection port. The first outer connection port is used to connect to an external device. The first spring and the first pushing member are located inside the female joint housing. Two ends of the first spring are respectively pressed against one end of the second pushing member and the inside of the female joint housing along the axial direction of the female joint housing. The first pushing member can press against the first inner connection port and seal the first inner connection port;

[0007] Male connector assembly, the male connector assembly includes a male connector housing, a second spring and a second pusher. The male connector housing has a second outer connection port and a second inner connection port. The second outer connection port is used to connect to an external device. One end of the second spring and the second pusher is located inside the male connector housing. Two ends of the second spring are respectively pressed against one end of the second pusher and the interior of the male connector housing along the axial direction of the male connector housing. The second pusher can press against the second inner connection port and seal the second inner connection port. The second inner connection port is detachably and sealingly connected to the first inner connection port. The other end of the second pusher can pass through the first inner connection port and press against the other end of the first pusher.

[0008] Preferably, the inner side of the first inner connection port has a first sealing groove, a first sealing ring is installed in the first sealing groove, the surface of the first pusher facing the first sealing ring is a first sealing surface, and the first sealing surface can press against the first sealing ring.

[0009] Preferably, there are multiple first spring fixing columns parallel to each other inside the female connector housing, and one end of the first spring is sleeved on the ring formed by the multiple first spring fixing columns.

[0010] Preferably, the inner wall of the female connector housing has multiple first guiding grooves extending along the axial direction of the female connector housing, multiple first guiding blocks are fixed on the first pusher, and the multiple first guiding blocks are respectively slidably connected to the multiple first guiding grooves.

[0011] Preferably, multiple reinforcing ribs are fixed circumferentially inside the female connector housing, and the multiple reinforcing ribs are located around the first pusher.

[0012] Preferably, one end of the first pusher facing the first outer connection port is an outer spherical surface structure.

[0013] Preferably, the female connector housing includes a first outer connector housing and a first inner connector housing. The first outer connection port is located on the first outer connector housing, the first inner connection port is located on the first inner connector housing, and the first outer connector housing and the first inner connector housing are connected by laser welding.

[0014] Preferably, the outer peripheral surface of the first outer connection port is a bamboo joint structure.

[0015] Preferably, the outer peripheral surface of the first outer connection port has a first outer sealing groove, and a first outer sealing ring is installed in the first outer sealing groove.

[0016] Preferably, a second sealing groove is provided on the inner side of the second inner connection port, and a second sealing ring is installed in the second sealing groove. The second pushing member is composed of a pointed end portion and a pressing portion. The pointed end portion is fixed to the pressing portion. The surface of the pressing portion connected to the pointed end portion is a second sealing surface, and the second sealing surface can press on the second sealing ring.

[0017] Preferably, one end of the pressing portion facing the second outer connection port is of an outer spherical surface structure.

[0018] Preferably, a third sealing groove is provided on the outer peripheral surface of the second inner connection port of the male joint housing, and a third sealing ring is installed in the third sealing groove. The third sealing ring presses between the male joint housing and the female joint housing.

[0019] Preferably, two oppositely arranged and through snap spring grooves are circumferentially formed on the outer peripheral surface of one end of the female joint housing connected to the male joint housing. An annular groove is circumferentially formed on the male joint housing. The annular groove is in alignment with the snap spring grooves. The two-way check valve also includes a snap spring, and the snap spring passes through the two snap spring grooves and is clamped in the annular groove.

[0020] On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0021] The positive and progressive effects of the present invention are as follows: By respectively arranging a spring and a pushing member in the female joint housing and the male joint housing, when the female joint assembly and the male joint assembly are connected, the two-way check valve is in a conducting state, and when the female joint housing and the male joint housing are separated, both are in a sealed and separated state. Description of the Drawings

[0022] Figure 1 It is a schematic three-dimensional structure diagram of the two-way check valve in the preferred embodiment of the present invention.

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the two-way check valve in a position state in the preferred embodiment of the present invention.

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the two-way check valve in another position state in the preferred embodiment of the present invention.

[0025] Figure 4 It is a schematic three-dimensional structure diagram of the first inner joint housing in the preferred embodiment of the present invention.

[0026] Figure 5 It is a schematic three-dimensional structure diagram of the second inner joint housing in the preferred embodiment of the present invention.

[0027] Description of the Reference Numerals:

[0028] Female connector assembly 100

[0029] Female connector housing 110

[0030] First external connection port 111

[0031] First internal connection port 112

[0032] First sealing groove 113

[0033] First spring fixing post 114

[0034] First guiding groove 115

[0035] Reinforcing rib 116

[0036] First external connector housing 117

[0037] First internal connector housing 118

[0038] First external sealing groove 119

[0039] First spring 120

[0040] First pusher 130

[0041] First sealing surface 131

[0042] First guiding block 132

[0043] First sealing ring 140

[0044] First external sealing ring 150

[0045] Circlip groove 160

[0046] Male connector assembly 200

[0047] Male connector housing 210

[0048] Second external connection port 211

[0049] Second internal connection port 212

[0050] Second sealing groove 213

[0051] Second spring fixing post 214

[0052] Second guiding groove 215

[0053] Second external connector housing 216

[0054] Second internal connector housing 217

[0055] Second external sealing groove 218

[0056] Third sealing groove 219

[0057] Second spring 220

[0058] Second pusher 230

[0059] Second sealing surface 231

[0060] Second guide block 232

[0061] Tip part 233

[0062] Pressing part 234

[0063] Second sealing ring 240

[0064] Third sealing ring 250

[0065] Annular groove 260

[0066] Second outer sealing ring 270

[0067] Circlip 300 Detailed implementation mode

[0068] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples.

[0069] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation of the present invention.

[0070] Figures 1-3 A two-way check valve joint is shown, which includes: a female joint assembly 100 and a male joint assembly 200. The female joint assembly 100 includes a female joint housing 110, a first spring 120 and a first pusher 130. The female joint housing 110 has a first outer connection port 111 and a first inner connection port 112, and the first outer connection port 111 is used to connect to an external device. The first spring 120 and the first pusher 130 are located inside the female joint housing 110. The two ends of the first spring 120 are respectively pressed against one end of the second pusher 230 and the inside of the female joint housing 110 along the axial direction of the female joint housing 110. The first pusher 130 can press against the first inner connection port 112 and seal the first inner connection port 112.

[0071] The male connector assembly 200 includes a male connector housing 210, a second spring 220, and a second pusher 230. The male connector housing 210 has a second outer connection port 211 and a second inner connection port 212. The second outer connection port 211 is used to connect to an external device. One end of the second spring 220 and the second pusher 230 is located inside the male connector housing 210. The two ends of the second spring 220 are respectively pressed against one end of the second pusher 230 and the interior of the male connector housing 210 along the axial direction of the male connector housing 210. The second pusher 230 can press against the second inner connection port 212 and seal the second inner connection port 212. The second inner connection port 212 is detachably and sealingly connected to the first inner connection port 112. The other end of the second pusher 230 can pass through the first inner connection port 112 and press against the other end of the first pusher 130.

[0072] In this solution, when the female connector assembly 100 and the male connector assembly 200 are separated from each other, the first pusher 130 presses against the first inner connection port 112 under the spring force of the first spring 120, so that the first inner connection port 112 is in a sealed-off state. Similarly, the second pusher 230 presses against the second inner connection port 212 under the spring force of the second spring 220, so that the second inner connection port 212 is in a sealed-off state. In this example, the female connector assembly 100 and the male connector assembly 200 are respectively connected to the battery pack and the charging module. In the separated state, it can ensure that the liquid cooling medium in the battery pack and the charging module cannot flow out of the battery pack and the charging module, ensuring the safety of the system. When the female connector assembly 100 and the male connector assembly 200 are connected, that is, the female connector housing 110 and the male connector housing 210 are sealingly connected, one end of the second pusher 230 can pass through the first inner connection port 112 and press against the first pusher 130. At this time, under the mutual pushing action of the first pusher 130 and the second pusher 230, the first pusher 130 is separated from the first inner connection port 112, and the second pusher 230 is separated from the second inner connection port 212, so that the liquid cooling medium in the battery pack and the charging module can flow through the first inner connection port 112 and the second inner connection port 212 to circulate and dissipate heat. In this solution, the elastic coefficient of the second spring 220 is the same as that of the first spring 120. When the first pusher 130 and the second pusher 230 press against each other, their elastic deformation amounts are the same, and the opening amounts of the first inner connection port 112 and the second inner connection port 212 are the same.

[0073] To ensure the sealing between the first inner connection port 112 and the first pusher 130, the inner side of the first inner connection port 112 has a first sealing groove 113. A first sealing ring 140 is installed in the first sealing groove 113. The surface of the first pusher 130 facing the first sealing ring 140 is a first sealing surface 131, and the first sealing surface 131 can press against the first sealing ring 140.

[0074] In addition, in order to ensure the sealing performance between the second internal connection port 212 and the second pushing member 230, a second sealing groove 213 is provided on the inner side of the second internal connection port 212, and a second sealing ring 240 is installed in the second sealing groove 213. The second pushing member 230 is composed of a pointed end portion 233 and a pressing portion 234. The pointed end portion 233 is fixed to the pressing portion 234. The surface of the pressing portion 234 connected to the pointed end portion 233 is a second sealing surface 231, and the second sealing surface 231 can press on the second sealing ring 240. In other embodiments, the pointed end portion 233 can be designed as a conical shape, the second sealing groove 213 can be provided on the side wall of the second internal connection port 212, and the conical surface of the pointed end portion 233 can press on the second sealing groove 213, which can also achieve the sealing of the second internal connection port 212.

[0075] In order to fix the acting direction of the first spring 120, multiple mutually parallel first spring fixing columns 114 are provided inside the female connector housing 110, and one end of the first spring 120 is sleeved on the ring formed by the multiple first spring fixing columns 114. The first spring fixing columns 114 are dispersedly arranged, which can not only play a role in supporting the spring, but also do not affect the flow of liquid inside the female connector housing 110. In addition, multiple mutually parallel second spring fixing columns 214 are also provided inside the male connector housing 210, and one end of the second spring 220 is sleeved on the ring formed by the multiple second spring fixing columns 214.

[0076] In this solution, as Figure 4 shown, the inner wall of the female connector housing 110 has multiple first guiding grooves 115 extending along the axial direction of the female connector housing 110. Multiple first guiding blocks 132 are fixed on the first pushing member 130, and the multiple first guiding blocks 132 are respectively slidably connected to the multiple first guiding grooves 115. Due to the interaction between the first guiding grooves 115 and the first guiding blocks 132, the first pushing member 130 can only move along the axial direction of the female connector housing 110, ensuring that no matter how the first pushing member 130 moves, it always faces the first sealing ring 140, so that it can completely press on the first sealing ring 140 to ensure the sealing performance of the first internal connection port 112. Similarly, as Figure 5 shown, the inner wall of the male connector housing 210 has multiple second guiding grooves 215 extending along the axial direction of the male connector housing 210. Multiple second guiding blocks 232 are fixed on the pressing portion 234, and the multiple second guiding blocks 232 are respectively slidably connected to the multiple second guiding grooves 215.

[0077] In order to strengthen the structural strength of the female connector housing 110 and the male connector housing 210, multiple reinforcing ribs 116 are fixed circumferentially inside the female connector housing 110 and the male connector housing 210, and the multiple reinforcing ribs 116 are respectively located around the first pushing member 130 and the second pushing member 230.

[0078] The two-way check valve joint is applied in the fluid field, and pressure drop is a functional requirement that must be considered. First of all, the internal diameter must be large enough, and the volume of the housing should be as small as possible. Then, it is also necessary to meet the fluid flow principle and reasonably design the internal structure of the space. The pushing mechanism is a place with relatively large flow resistance, so the design of its structural shape is particularly important. In this embodiment, one end of the first pushing member 130 facing the first external connection port 111 is an outer spherical surface structure, one end of the pressing portion 234 facing the second external connection port 211 is an outer spherical surface structure, and the tip portion 233 is an arrow-shaped structure. The above structures can meet the pressure drop requirements and enable the liquid to flow as smoothly and gently as possible. It is observed through simulation that the above structures can control the pressure drop within the design requirements.

[0079] In order to facilitate the installation of the first spring 120, the first pushing member 130, and the first sealing ring 140 into the female joint housing 110, in this embodiment, the female joint housing 110 includes a first outer joint housing 117 and a first inner joint housing 118. The first external connection port 111 is located on the first outer joint housing 117, and the first internal connection port 112 is located on the first inner joint housing 118. The first outer joint housing 117 and the first inner joint housing 118 are connected by laser welding. Laser welding has the advantages of high welding reliability and good sealing performance. Similarly, the male joint housing 210 includes a second outer joint housing 216 and a second inner joint housing 217. The second external connection port 211 is located on the second outer joint housing 216, and the second internal connection port 212 is located on the second inner joint housing 217. The second outer joint housing 216 and the second inner joint housing 217 are connected by laser welding.

[0080] In order to facilitate the connection of the first outer joint housing 117 and the second outer joint housing 216 to the battery pack and the charging module, the outer peripheral surfaces of the first external connection port 111 and the second external connection port 211 are both bamboo joint structures.

[0081] In addition, a first outer sealing groove 119 is provided on the outer peripheral surface of the first external connection port 111, and a second outer sealing groove 218 is provided on the outer peripheral surface of the second external connection port 211. A first outer sealing ring 150 is installed in the first outer sealing groove 119, and a second outer sealing ring 270 is installed in the second outer sealing groove 218. The first outer sealing ring 150 can achieve a sealed connection between the first outer joint housing 117 and the battery pack, and the second outer sealing ring 270 can achieve a sealed connection between the second outer joint housing 216 and the charging module.

[0082] In order to ensure the sealing performance after the male joint housing 210 is connected to the female joint housing 110, a third sealing groove 219 is provided on the outer peripheral surface of the second inner joint housing 217 of the male joint housing 210, and a third sealing ring 250 is installed in the third sealing groove 219. The third sealing ring 250 is pressed between the second inner joint housing 217 and the first inner joint housing 118.

[0083] In this solution, on the outer peripheral surface of one end of the female connector housing 110 (i.e., the first inner connector housing 118) connected to the male connector housing 210, two oppositely arranged and through snap rings grooves 160 are circumferentially formed. An annular groove 260 is circumferentially formed on the second inner connector housing 217. The annular groove 260 is in alignment with the snap rings grooves 160. The two-way check valve connector further includes a snap ring 300. The snap ring 300 passes through the two snap rings grooves 160 and is clamped in the annular groove 260. When it is necessary to separate the male connector housing 210 and the female connector housing 110, first, the snap ring 300 is forcefully pried open, and then the female connector housing 110 and the male connector housing 210 are slowly separated. Under the action of the spring force, the first pusher 130 and the second pusher 230 quickly move forward in the first guide groove 115 and the second guide groove 215, and cooperate with the sealing rings at both ends for sealing to prevent liquid from flowing out. During disassembly, a small amount of liquid will flow out, and it can be wiped clean immediately.

[0084] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A two-way check valve joint, characterized in that, It includes: A female connector assembly, which includes a female connector housing, a first spring and a first pusher. The female connector housing has a first outer connection port and a first inner connection port. The first outer connection port is used to connect to an external device. The first spring and the first pusher are located inside the female connector housing. Two ends of the first spring are respectively pressed against one end of the first pusher and the interior of the female connector housing along the axial direction of the female connector housing. The first pusher can press against the first inner connection port and seal the first inner connection port; A male connector assembly, which includes a male connector housing, a second spring and a second pusher. The male connector housing has a second outer connection port and a second inner connection port. The second outer connection port is used to connect to an external device. The second spring and one end of the second pusher are located inside the male connector housing. Two ends of the second spring are respectively pressed against one end of the second pusher and the interior of the male connector housing along the axial direction of the male connector housing. The second pusher can press against the second inner connection port and seal the second inner connection port. The second inner connection port is detachably and sealingly connected to the first inner connection port. The other end of the second pusher can pass through the first inner connection port and press against the other end of the first pusher; The inner side of the first inner connection port has a first sealing groove, and a first sealing ring is installed in the first sealing groove. The surface of the first pusher facing the first sealing ring is a first sealing surface, and the first sealing surface can press against the first sealing ring; The inner wall of the female connector housing has a plurality of first guiding grooves extending along the axial direction of the female connector housing. A plurality of first guiding blocks are fixed on the first pusher, and the plurality of first guiding blocks are respectively slidably connected to the plurality of first guiding grooves; The inner side of the second inner connection port has a second sealing groove, and a second sealing ring is installed in the second sealing groove. The second pusher is composed of a pointed end portion and a pressing portion. The pointed end portion is fixed to the pressing portion. The surface of the pressing portion connected to the pointed end portion is a second sealing surface, and the second sealing surface can press against the second sealing ring; One end of the pressing portion facing the second outer connection port is an outer spherical surface structure; one end of the first pusher facing the first outer connection port is an outer spherical surface structure, and the pointed end portion is an arrow-shaped structure.

2. The two-way check valve joint according to claim 1, characterized in that, There are multiple mutually parallel first spring fixing columns inside the female connector housing, and one end of the first spring is sleeved on a ring formed by the multiple first spring fixing columns.

3. The two-way check valve joint according to claim 1, characterized in that, A plurality of reinforcing ribs are circumferentially fixed inside the female connector housing, and the plurality of reinforcing ribs are located around the first pusher.

4. The two-way check valve joint according to claim 1, characterized in that The female connector housing includes a first outer connector housing and a first inner connector housing. The first outer connection port is located on the first outer connector housing, and the first inner connection port is located on the first inner connector housing. The first outer connector housing and the first inner connector housing are connected by laser welding.

5. The bi-directional check and flow-through joint according to claim 4, characterized in that, The outer peripheral surface of the first outer connection port is a bamboo joint structure.

6. The bi-directional stop-and-pass joint according to claim 5, characterized in that, The outer peripheral surface of the first outer connection port has a first outer sealing groove, and a first outer sealing ring is installed in the first outer sealing groove.

7. The two-way check valve joint according to claim 1, characterized in that, The outer peripheral surface of the second inner connection port of the male connector housing has a third sealing groove, and a third sealing ring is installed in the third sealing groove. The third sealing ring is pressed between the male connector housing and the female connector housing.

8. The bi-directional stop and through joint according to claim 7, characterized in that, On the outer peripheral surface of one end of the female connector housing that is connected to the male connector housing, two oppositely arranged and through snap spring grooves are circumferentially formed. An annular groove is circumferentially formed on the male connector housing. The annular groove is in a position opposite to the snap spring grooves. The two-way check valve connector further includes a snap spring, and the snap spring passes through the two snap spring grooves and is clamped in the annular groove.

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