Fluid connector

Abstract

The invention discloses a fluid connector, and relates to the technical field of new energy, in particular to a fluid connector which comprises a base body, a first air channel, a second air channel and an air cavity are arranged in the base body, the air cavity is an opening groove with an opening located in the end of the base body, the second air channel is communicated with the air cavity, the end of the first air channel is communicated with a suction cup, and the suction cup is arranged in the opening groove. The suction cup is fixedly arranged in the air cavity; according to the fluid connector, two channels are arranged, one set of channels are the negative pressure channels, the suction cups capable of axially deforming are arranged at the ends of the negative pressure channels and used for adsorbing a valve element of a valve on working equipment and driving the valve element to move outwards, so that the valve is conducted, and the other set of channels can be directly communicated with the conducted valve for gas exchange; the whole device is simple in structure and low in processing cost, and a conduction condition is added, that is, the first group of channels can be conducted only by negative pressure, so that the control of the test progress is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and more specifically, to a fluid connector. Background Art

[0002] The protection level of working equipment reflects the degree of protection provided by the housing to prevent access to dangerous parts, solid foreign objects or water from entering. Especially for outdoor use, it is inevitable to be in a harsh environment with high humidity or a lot of sand and dust. The sealing and waterproofing capabilities of electrical equipment are crucial to ensure the safe operation and life of the internal components of electrical equipment. If leakage occurs during use and the leakage exceeds the allowable range, not only will the product function be affected, but in serious cases, it may cause serious consequences such as fire and explosion, causing irreparable losses.

[0003] Therefore, after the working equipment is assembled, it is necessary to do a protection level test before leaving the factory to ensure that the sealing of the electrical equipment meets the protection level requirements and ensure the sealing performance of the equipment. At present, the traditional relatively quick and simple airtightness detection methods include the bubble method, the smear method, and the traditional pressure change method.

[0004] How to provide a structure that can quickly and conveniently detect the protection level of equipment and determine whether a sealed device is leaking is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a fluid connector, which is arranged through a dual channel, one group of which is a negative pressure channel, and a suction cup that can undergo axial deformation is arranged at the end, which is used to adsorb the valve core on the valve of the working equipment and drive the valve core to move outward, so that the valve is turned on, and the other group of channels can be directly connected to the valve after the conduction to exchange gas, and then perform air tightness detection of the working equipment. The overall equipment structure is simple, the processing cost is low, and the conduction condition is added, that is, the first group of channels requires negative pressure to be turned on, which is convenient for controlling the progress of the test.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A fluid connector comprises a base, wherein a first air channel, a second air channel and an air cavity are arranged inside the base, wherein the air cavity is an open groove whose opening is located at the end of the base, the second air channel is connected to the air cavity, and a suction cup is arranged at the end of the first air channel, the suction cup is fixedly arranged in the air cavity, and the suction cup and the air cavity have the same opening direction;

[0008] When there is negative pressure in the suction cup, the suction cup can elastically contract along the center line direction of the suction cup.

[0009] Preferably, an annular step surface is provided in the air cavity, and a second sealing ring for sealing is provided in the step surface.

[0010] Preferably, it further comprises a connector, wherein the air cavity is arranged inside the connector;

[0011] The connecting body is fixedly connected to the base body.

[0012] Preferably, the side wall of the air cavity is provided with a plurality of groups of through holes arranged in a circular array, and connecting steel balls are installed in the through holes;

[0013] A push-pull ring is slidably mounted on the outside of the base body, and is used to apply an axial force to the connecting steel ball. The inner wall of the push-pull ring is a variable diameter structure, and is used to accommodate the radial movement of the connecting steel ball.

[0014] A socket spring is arranged between the push-pull ring and the base along a relative sliding direction.

[0015] Preferably, a first air nozzle connector is fixedly provided at the end of the first air passage;

[0016] A second gas nozzle connector is fixedly disposed at the end of the second gas channel.

[0017] Preferably, it further comprises a valve body and a valve core, wherein the valve core is a stepped shaft structure, the small diameter portion of the valve core is slidably mounted in the valve body, and the stepped surface of the valve core is in contact and sealed with the end surface of the valve body;

[0018] A plug spring is arranged between the valve core and the valve body along a relative sliding direction;

[0019] One end of the valve body close to the large diameter end of the valve core is fixedly arranged in the air cavity, and the large diameter end of the valve core is in contact and sealed with the opening of the suction cup.

[0020] Preferably, the outer circumferential surface of the valve body is provided with an annular groove for clamping a connecting steel ball provided in the base.

[0021] Preferably, the valve body is a stepped shaft structure, an external thread is arranged on the outside of the small diameter end, and a first sealing ring is arranged on the stepped surface.

[0022] Preferably, a guide ring is fixedly provided inside the valve body, and the outer wall of the small-diameter end of the valve core is in sliding contact with the inner wall of the guide ring.

[0023] Preferably, a limit groove is provided on the circumferential outer wall of the small-diameter end of the valve core, and a clamping ring is fixedly installed in the limit groove;

[0024] The guide ring is arranged in the valve body at one end close to the large diameter end of the valve core;

[0025] Both ends of the plug spring are respectively in contact with end surfaces of the clamping ring and the guide ring.

[0026] Compared with the prior art, the fluid connector provided by the present invention has at least the following beneficial effects:

[0027] 1. A design of double air channels is adopted in the base. The first air channel is a negative pressure air channel, which is used to make the suction cup present negative pressure, adsorb the corresponding workpiece, and drive the workpiece to move backward. Specifically in the test environment, the suction cup adsorbs the valve core in the valve of the test equipment, so that the valve core moves backward, thereby connecting the valve. At the same time, the valve after connection is directly connected to the second air channel, and gas exchange can be carried out with the second air channel, thereby performing air tightness detection of the test equipment;

[0028] 2. By controlling the negative pressure in the first airway, if the negative pressure is stopped, the suction cup can stop adsorbing the valve core, even if the valve is closed. Through the above settings, the conduction of the valve is added with control conditions, so that the test progress of the test equipment can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of a specific plug provided by the present invention;

[0031] Figure 2 An exploded view of the parts of a specific plug provided by the present invention;

[0032] Figure 3 A schematic diagram of the structure of a specific socket provided by the present invention;

[0033] Figure 4 An exploded view of the parts of a specific socket provided by the present invention;

[0034] Figure 5 This is a schematic structural diagram of a specific plug and socket combination provided by the present invention.

[0035] Figure 1-Figure 5 middle:

[0036] 1. Plug; 101. Valve body; 1011. Annular groove; 1012. Guide ring; 1013. First sealing ring; 102. Valve core; 1021. Limiting groove; 103. Plug spring

[0037] 2. Socket; 201. Base; 2011. First air channel; 2012. Second air channel; 202. Connector; 2021. Air cavity; 2022. Connecting steel ball; 2023. Second sealing ring; 203. Suction cup; 204. Socket spring; 205. Push-pull ring; 206. First air nozzle joint; 207. Second air nozzle joint. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The core of the present invention is to provide a fluid connector, which is set up through a dual channel, one of which is a negative pressure channel, and a suction cup that can undergo axial deformation is set at the end, which is used to adsorb the valve core on the valve of the working equipment and drive the valve core to move outward, so that the valve is turned on. The other group of channels can be directly connected to the valve after the conduction to exchange gas, and then perform air tightness detection of the working equipment. The overall equipment structure is simple, the processing cost is low, and the conduction condition is increased, that is, the first group of channels requires negative pressure to be turned on, which is convenient for controlling the progress of the test.

[0040] Please refer to Figure 1-Figure 5 A fluid connector includes a base 201, a first air channel 2011, a second air channel 2012 and an air cavity 2021 are arranged inside the base 201, the air cavity 2021 is an open groove with an opening at the end of the base 201, the second air channel 2012 is connected to the air cavity 2021, and a suction cup 203 is arranged at the end of the first air channel 2011, the suction cup 203 is fixedly arranged in the air cavity 2021, and the suction cup 203 and the air cavity 2021 have the same opening direction;

[0041] When there is negative pressure in the suction cup 203, the suction cup 203 can elastically contract along its own center line.

[0042] like Figure 5 As shown, a first air channel 2011 and a second air channel 2012 are arranged in the base 201, the two groups of air channels are independent of each other, and the end of the first air channel 2011 is connected to a suction cup 203. When negative pressure is introduced into the first air channel 2011, negative pressure is synchronously generated in the suction cup 203, and the suction force is increased. Moreover, when the suction cup 203 is under negative pressure, it can shrink along its own center line direction, so that the suction cup 203 can absorb the object at the opening and stretch it backward. In the air tightness test, the purpose of this function is to absorb the end of the valve core 102 through the suction cup 203 and pull the valve core 102 backward, so that the air channel in the valve body 101 is open;

[0043] An air cavity 2021 is provided in the base body 201, and the suction cup 203 is provided in the air cavity 2021, that is, after the suction cup 203 pulls the valve core 102 to move backward, the air channel in the valve body 101 can be directly connected to the air cavity 2021, and at the same time, the second air channel 2012 in the base body 201 is directly connected to the air cavity 2021, that is, the air channel in the valve body 101 is directly connected to the second air channel 2012, that is, the test equipment where the valve body 101 is located can directly exchange gas with the second air channel 2012;

[0044] Specifically, in the test of the new energy battery pack assembly, a plug 1 composed of a valve body 101 and a valve core 102 is installed on the battery pack assembly. The opening and closing and sealing of the pressure relief port of the battery pack assembly are realized through the action of the valve core 102. The socket 2 composed of a base 201 and a suction cup 203 is combined with the plug 1. By controlling the negative pressure in the first airway 2011, the suction cup 203 is controlled to adsorb the end of the valve core 102 and drive the valve core 102 to move backward, so that the pressure in the valve body 101 is reduced. The air passage and the air cavity 2021 are connected or blocked; during the test, it is necessary to inflate the inside of the battery pack assembly to check its air tightness, that is, negative pressure is introduced into the first air passage 2011 to make the suction cup 203 adsorb the valve core 102 and pull the valve core 102 backward to make the air passage in the valve body 101 connected, and positive pressure airflow is introduced into the second air passage 2012, and the positive pressure airflow enters the battery pack assembly through the air cavity 2021 and the air passage in the valve body 101, so that the battery pack assembly is under positive pressure.

[0045] During the operation, it is only necessary to control the negative pressure in the first air channel 2011 to control the suction force of the suction cup 203 and the deformation in the center line direction, that is, to change the suction force of the suction cup 203 on the valve core 102 and the backward displacement of the valve core 102, that is, to adjust the conductance of the plug 1, thereby providing a controllable conditional variable for the test, which is convenient for controlling the progress of the test.

[0046] In some embodiments, an annular step surface is provided in the air cavity 2021, and a second sealing ring 2023 for sealing is provided in the step surface;

[0047] When designing the air cavity 2021, an annular step surface is set inside the air cavity 2021 for abutting the end of the valve body 101 and allowing the valve core 102 to pass through, so as to facilitate accurate mutual positioning of the plug 1 and the socket 2 when the two are combined. At the same time, the second sealing ring 2023 is added to enhance the sealing of the contact position between the air cavity 2021 and the valve body 101 to ensure the airtightness of the air cavity 2021.

[0048] In some embodiments, a connecting body 202 is further included, and an air cavity 2021 is disposed inside the connecting body 202;

[0049] The connecting body 202 is fixedly connected to the base body 201;

[0050] like Figure 5 As shown, the socket 2 adopts a split design, the first air channel 2011 and the second air channel 2012 are designed in the base 201, and the air cavity 2021 is designed in the connector 202, wherein the first air channel 2011 and the second air channel 2012 adopt a straight through hole design, which is easy to process; the connector 202 and the base 201 are threadedly connected, and a sealing ring is provided on the contact surface for contact sealing to ensure the air tightness of each air channel;

[0051] In some embodiments, the connector 202 and the base 201 are integrally designed, that is, the first air channel 2011, the second air channel 2012 and the air cavity 2021 are all arranged in the base 201. Although the processing difficulty is increased, the assembly process is reduced. This solution also falls within the protection scope of this application.

[0052] In some embodiments, the side wall of the air cavity 2021 is arranged with a plurality of through holes in a circular array, and connecting steel balls 2022 are installed in the through holes;

[0053] A push-pull ring 205 is slidably mounted on the outside of the base 201 to apply an axial force to the connecting steel ball 2022. The inner wall of the push-pull ring 205 is a variable diameter structure to accommodate the radial movement of the connecting steel ball 2022.

[0054] A socket spring 204 is provided between the push-pull ring 205 and the base 201 along the relative sliding direction;

[0055] By providing a radially movable connecting steel ball 2022, it can be clamped in the annular clamping groove 1011 on the outer peripheral wall of the valve body 101, and at the same time, a push-pull ring 205 is added on the outside to limit the connecting steel ball 2022 in the radial direction, so as to prevent the connecting steel ball 2022 from falling off from the annular clamping groove 1011, thereby achieving relative fixation of the valve body 101 and the base 201, and realizing the quick connection and fixation of the plug 1 and the socket 2;

[0056] In some embodiments, the socket 2 is in the form of a combination of a base 201 and a connector 202, and the connector 202 is directly connected to the valve body 101, so the through hole is set in the connector 202, that is, the connecting steel ball 2022 is set in the connector 202, so as to realize the rapid connection and fixation of the valve body 101 and the connector 202.

[0057] In some embodiments, Figure 4 and Figure 5 As shown, a first air nozzle connector 206 is fixedly provided at the end of the first air passage 2011;

[0058] A second air nozzle connector 207 is fixedly disposed at the end of the second air passage 2012;

[0059] By adding the first air nozzle connector 206 and the second air nozzle connector 207 at the ends of the first air passage 2011 and the second air passage 2012, it is convenient to connect the first air passage 2011 and the second air passage 2012 with an external air pipe.

[0060] In some embodiments, it also includes a valve body 101 and a valve core 102, the valve core 102 is a stepped shaft structure, the small diameter portion of the valve core 102 is slidably installed in the valve body 101, and the stepped surface of the valve core 102 is in contact and sealed with the end surface of the valve body 101;

[0061] A plug spring 103 is arranged between the valve core 102 and the valve body 101 along the relative sliding direction;

[0062] One end of the valve body 101 close to the large diameter end of the valve core 102 is fixedly disposed in the air cavity 2021, and the large diameter end of the valve core 102 is in contact and sealed with the opening of the suction cup 203;

[0063] The plug 1 is composed of a valve body 101 and a valve core 102, and is directly fixed to the test equipment when in use. The air channel in the valve body 101 directly penetrates the shell of the test equipment, so that gas exchange can be carried out inside and outside the test equipment, and the valve core 102 can open or close the air channel in the valve body 101 through axial movement, and the plug spring 103 can automatically reset the valve core 102, so that the air channel in the valve body 101 is in a normally closed state. Moreover, when the pressure difference force between the internal pressure and the external pressure of the test equipment is greater than the elastic force of the plug spring 103, the pressure difference force can push the valve core 102 to move, forcing the air channel in the valve body 101 to be opened, thereby releasing the pressure in the shell and playing the role of a pressure relief valve. Moreover, the valve core 102 adopts a stepped shaft structure, and the large end corresponds to the suction cup 203, which is convenient for the suction of the suction cup 203.

[0064] In some embodiments, the outer circumferential surface of the valve body 101 is provided with an annular groove 1011 for clamping the connecting steel ball 2022 provided in the base body 201;

[0065] like Figure 2 As shown, an annular groove 1011 is provided on the outside of the valve body 101 for engaging the connecting steel ball 2022 in the socket 2, thereby realizing quick plugging and unplugging of the plug 1 and the socket 2, realizing the quick connection function, and improving the test efficiency of the test equipment.

[0066] In some embodiments, the valve body 101 is a stepped shaft structure, an external thread is provided on the outside of the small diameter end, and a first sealing ring 1013 is provided on the stepped surface;

[0067] By providing an external thread on the outside of the valve body 101, the valve body 101 is directly connected to the threaded hole on the housing of the test equipment, which is convenient for assembly. A first sealing ring 1013 is provided to increase the air tightness and protection performance of the connection position.

[0068] In some embodiments, a guide ring 1012 is fixedly disposed inside the valve body 101, and the outer wall of the small-diameter end of the valve core 102 is in sliding contact with the inner wall of the guide ring 1012;

[0069] By adding the guide ring 1012 , the straightness of the valve core 102 during axial movement is improved, thereby preventing the valve core 102 from getting stuck with the valve body 101 during sliding.

[0070] In some embodiments, a limit groove 1021 is provided on the circumferential outer wall of the small-diameter end of the valve core 102, and a clamping ring is fixedly installed in the limit groove 1021;

[0071] The guide ring 1012 is disposed in the valve body 101 at one end close to the large diameter end of the valve core 102;

[0072] The two ends of the plug spring 103 are respectively in contact with the end faces of the clamp ring and the guide ring 1012;

[0073] By providing a limit groove 1021 and a retaining ring at the small-diameter end of the valve core 102, the difficulty of assembling the valve core 102 and the valve body 101 is reduced. The specific assembly method is that the small-diameter end of the valve core 102 is inserted from the end of the valve body 101 provided with a guide ring 1012, and then the plug spring 103 is installed in the valve body 101, and then the retaining ring is clamped in the limit groove 1021, so that the two ends of the plug spring 103 are respectively abutted against the retaining ring and the guide ring 1012, and in the initial state, the plug spring 103 is in a compressed state, so that the opening of the valve core 102 requires a certain initial force to ensure that the valve core 102 is in a normally closed state, thereby ensuring the air tightness inside the test equipment.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The fluid connector provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A fluid connector, It is characterized in that The invention comprises a base body (201), wherein a first air channel (2011), a second air channel (2012) and an air cavity (2021) are arranged inside the base body (201), wherein the air cavity (2021) is an open groove whose opening is located at the end of the base body (201), wherein the second air channel (2012) is in communication with the air cavity (2021), and a suction cup (203) is arranged at the end of the first air channel (2011), wherein the suction cup (203) is fixedly arranged in the air cavity (2021), and the opening directions of the suction cup (203) and the air cavity (2021) are consistent; When negative pressure is present in the suction cup (203), the suction cup (203) can elastically contract along the direction of its own center line.

2. The fluid connector according to claim 1, It is characterized in that An annular step surface is provided in the air cavity (2021), and a second sealing ring (2023) for sealing is provided in the step surface.

3. The fluid connector according to claim 1, It is characterized in that It also includes a connecting body (202), wherein the air cavity (2021) is arranged inside the connecting body (202); The connecting body (202) is fixedly connected to the base body (201).

4. The fluid connector according to claim 1, It is characterized in that The side wall of the air cavity (221) is provided with a plurality of groups of through holes arranged in a ring array, and connecting steel balls (222) are installed in the through holes. A push-pull ring (205) is slidably mounted on the outside of the base body (201) for applying an axial force to the connecting steel ball (2022); the inner wall of the push-pull ring (205) is a variable diameter structure for accommodating radial movement of the connecting steel ball (2022); A socket spring (204) is provided between the push-pull ring (205) and the base body (201) along a relative sliding direction.

5. The fluid connector according to claim 1, It is characterized in that A first air nozzle connector (206) is fixedly provided at the end of the first air channel (2011); A second air nozzle connector (207) is fixedly provided at the end of the second air channel (2012).

6. The fluid connector according to any one of claims 1 to 5, It is characterized in that It also comprises a valve body (101) and a valve core (102), wherein the valve core (102) is a stepped shaft structure, the small diameter portion of the valve core (102) is slidably mounted in the valve body (101), and the stepped surface of the valve core (102) is in contact and sealed with the end surface of the valve body (101); A plug spring (103) is arranged between the valve core (102) and the valve body (101) along a relative sliding direction; One end of the valve body (101) close to the large-diameter end of the valve core (102) is fixedly disposed in the air cavity (2021), and the large-diameter end of the valve core (102) is in contact and sealed with the opening of the suction cup (203).

7. The fluid connector according to claim 6, It is characterized in that The outer circumferential surface of the valve body (101) is provided with an annular clamping groove (1011) for clamping a connecting steel ball (2022) provided in the base body (201).

8. The fluid connector according to claim 6, It is characterized in that The valve body (101) is a stepped shaft structure, an external thread is provided on the outside of the small-diameter end, and a first sealing ring (1013) is provided on the stepped surface.

9. The fluid connector according to claim 6, It is characterized in that A guide ring (1012) is fixedly arranged inside the valve body (101), and the outer wall of the small-diameter end of the valve core (102) is in sliding contact with the inner wall of the guide ring (1012).

10. The fluid connector according to claim 9, It is characterized in that A limit groove (1021) is provided on the circumferential outer wall of the small-diameter end of the valve core (102), and a clamping ring is fixedly installed in the limit groove (1021); The guide ring (1012) is arranged at one end of the valve body (101) close to the large diameter end of the valve core (102); Both ends of the plug spring (103) are in contact with the end faces of the clamping ring and the guide ring (1012) respectively.

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