Connecting device for airtight instrument

Abstract

The utility model relates to the technical field of airtight connecting devices, in particular to a connecting device for an airtight instrument, which mainly comprises an outer shell and a connecting mechanism, a sealing shell is mounted on the inner wall of the outer shell in a sliding manner, and the connecting mechanism is arranged below the outer shell and comprises a sealing ring fixedly mounted on the bottom surface of the sealing shell. A quick clamp and a fixing mechanism are arranged above the sealing shell, and the fixing mechanism is arranged above the outer shell. After the sealing shell and the battery pack are connected and fixed, the quick clamp is fixed, the clamping rod is pressed, the clamping rod rotates by a certain angle and extrudes the torsional spring, the clamping groove in the rotating strip rotates to the outer wall of the quick clamp to surround and limit the quick clamp, the clamping rod is loosened, and the torsional spring pushes the clamping rod to rotate reversely under the action of the torsional spring. The arc-shaped groove on the clamping rod clamps and limits the quick clamp, so that the quick clamp is not easy to loosen from the clamping groove, the quick clamp is limited and fixed and is not easy to open automatically, smooth detection is ensured, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of airtight connection devices, specifically a connection device for airtight instruments. Background Technology

[0002] With the rise of the new energy industry and the accelerated development of electric vehicles, the demand for power battery packs is also increasing. The safety of power batteries is particularly important. In the production and manufacturing process of lithium batteries, the battery packs must undergo airtightness testing before shipment. Only when the airtightness of the battery packs is qualified can they flow into the next process for processing and use.

[0003] When testing the airtightness of a battery pack, the battery pack needs to be connected to an airtightness tester. Existing airtightness tester connection devices require manual docking and connection between the device and a specially designed explosion-proof valve on the battery pack. A quick-clamp clamp is used to lock the connection, ensuring a tight fit between the device and the valve. However, even a slight accidental touch during operation can cause the quick-clamp clamp to open unexpectedly due to a lack of sufficient stability and limit protection. Such unexpected opening can lead to loosening or even complete detachment of the connection between the device and the valve, interrupting the test and affecting efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a connection device for airtight instruments to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A connection device for airtight instruments includes: an outer shell, a sealing shell slidably mounted on the inner wall of the outer shell, and a connecting air tube fixedly and through the top surface of the sealing shell; and further includes:

[0007] A connecting mechanism is located below the outer casing. The connecting mechanism includes a sealing ring fixedly installed on the bottom surface of the sealing casing, and a quick clamp is provided on the top of the sealing casing. The connecting mechanism is used to connect the sealing casing to the battery pack.

[0008] The fixing mechanism is located on the top of the outer casing. The fixing mechanism includes a rotating bar located on the top of the outer casing, and a locking bar is provided on one side of the rotating bar. The fixing mechanism is used to fix the quick clamp.

[0009] Preferably, three limiting sleeves are fixedly installed on the outer wall of the sealing shell, and three limiting grooves are opened on the outer wall of the outer shell. The inner walls of the three limiting grooves are slidably connected to the outer walls of the three limiting sleeves respectively.

[0010] Preferably, two connecting shells are fixedly installed on the bottom surface of the outer shell, and the two connecting shells are located in the semi-circular area of ​​the outer shell. Limiting rods are slidably installed on the inner walls of the three limiting sleeves, and the two ends of the three limiting rods are fixedly connected to the upper and lower inner walls of the three limiting grooves, respectively.

[0011] Preferably, a through groove is provided on the top surface of the outer shell, the connecting air pipe is located inside the through groove, a fixing block is fixedly installed on the top surface of the outer shell, and a fixing rod is fixedly installed on the top surface of the sealing shell.

[0012] Preferably, the upper end of the fixing rod slides through the inner wall of the upper end of the outer shell and the bottom surface of the fixing block to extend above the fixing block. A rotating seat is fixedly installed on the outer wall of the fixing block. The inner wall of the rotating seat is hinged to the side of the quick clamp. The lower end of the quick clamp is hinged to the upper end of the fixing rod.

[0013] Preferably, a hinge block is fixedly installed on the top surface of the outer casing, the inner wall of the hinge block is hinged to the lower end of the rotating bar, and a slot is provided on the side of the rotating bar, which is slidably connected to the outer wall of the quick clamp.

[0014] Preferably, the top surface of the rotating bar is provided with a hinge groove, the inner wall of the hinge groove is rotatably mounted with a rotating shaft, the outer wall of the rotating shaft is fixedly connected to the inner wall of the clamping rod, and the side of the clamping rod is provided with an arc-shaped groove.

[0015] Preferably, a torsion spring is movably installed on the outer wall of the rotating shaft, with both ends of the torsion spring being fixedly connected to the side of the locking rod and the inner wall of the hinge groove, respectively. A retaining groove is provided on the side of the rotating bar, and the inner wall of the retaining groove is slidably connected to the side of the locking rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention connects and fixes the sealing shell to the battery pack, thus securing the quick-clamp. Pressing the lever rotates it by a certain angle, compressing the torsion spring and rotating the slot on the rotating bar to surround and limit the quick-clamp. Loosening the lever causes the torsion spring to push the lever in reverse, and the arc-shaped groove on the lever clamps and limits the quick-clamp, making it difficult for the quick-clamp to come loose from the slot. If the operator accidentally touches the quick-clamp during operation, the quick-clamp is limited and fixed and does not open automatically, making it difficult for the connecting device and the explosion-proof valve to loosen or separate, ensuring smooth testing and improving testing efficiency.

[0018] By engaging the connecting shell with the explosion-proof valve on the battery pack and locking the quick clamp, the fixing rod and sealing shell are moved. The limiting sleeve and limiting post limit the movement of the sealing shell, making its movement more stable. At the same time, the sealing shell contacts one end of the explosion-proof valve, and the sealing shell and connecting shell compress and fix one end of the explosion-proof valve. The sealing shell also compresses and deforms the sealing ring, which seals the sealing shell and one end of the explosion-proof valve, making the connection tighter and preventing gas leakage, thus improving the accuracy of the detection. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the bottom of the three-dimensional structure of this utility model;

[0021] Figure 3 This is an exploded three-dimensional view of the sealing shell of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle.

[0023] In the picture:

[0024] 1. Outer shell; 101. Sealing shell; 102. Connecting air pipe;

[0025] 2. Connecting mechanism; 201. Connecting shell; 202. Sealing ring; 203. Limiting sleeve; 204. Limiting groove; 205. Limiting rod; 206. Through groove; 207. Fixing block; 208. Fixing rod; 209. Rotating seat; 210. Quick clamp;

[0026] 3. Fixing mechanism; 301. Hinge block; 302. Rotating bar; 303. Slot; 304. Hinge groove; 305. Rotating shaft; 306. Locking rod; 307. Torsion spring; 308. Stop groove. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] like Figures 1-4 As shown, this application provides a connection device for airtight instruments, comprising: an outer shell 1, a sealing shell 101 slidably mounted on the inner wall of the outer shell 1, and a connecting air pipe 102 fixedly and throughly mounted on the top surface of the sealing shell 101, and further comprising:

[0030] The connecting mechanism 2 is located below the outer shell 1. The connecting mechanism 2 includes a sealing ring 202 fixedly installed on the bottom surface of the sealing shell 101. A quick clamp 210 is provided above the sealing shell 101. The connecting mechanism 2 is used to connect the sealing shell 101 to the battery pack.

[0031] Specifically, such as Figures 1-3 As shown, three limiting sleeves 203 are fixedly installed on the outer wall of the sealing shell 101, and three limiting grooves 204 are opened on the outer wall of the outer shell 1. The inner walls of the three limiting grooves 204 are slidably connected to the outer walls of the three limiting sleeves 203 respectively.

[0032] In this embodiment: the limiting sleeve 203 is limited by the limiting groove 204, thereby limiting the sealing shell 101 and making the movement of the sealing shell 101 more stable.

[0033] Specifically, such as Figures 1-3 As shown, two connecting shells 201 are fixedly installed on the bottom surface of the outer shell 1. The two connecting shells 201 are located in the semi-circular area of ​​the outer shell 1. Limiting rods 205 are slidably installed on the inner walls of the three limiting sleeves 203 respectively. The two ends of the three limiting rods 205 are fixedly connected to the upper and lower inner walls of the three limiting grooves 204 respectively.

[0034] In this embodiment: the limiting rod 205 is set to further limit the limiting sleeve 203, so as to ensure that the movement of the limiting sleeve 203 is smoother.

[0035] Specifically, such as Figures 1-3 As shown, a through groove 206 is provided on the top surface of the outer shell 1, and the connecting air pipe 102 is located inside the through groove 206. A fixing block 207 is fixedly installed on the top surface of the outer shell 1, and a fixing rod 208 is fixedly installed on the top surface of the sealing shell 101.

[0036] In this embodiment, the through groove 206 facilitates the connection of the external connecting pipe to the connecting air pipe 102.

[0037] Specifically, such as Figures 1-3 As shown, the upper end of the fixing rod 208 slides through the inner wall of the upper end of the outer shell 1 and the bottom surface of the fixing block 207, extending to the top of the fixing block 207. A rotating seat 209 is fixedly installed on the outer wall of the fixing block 207. The inner wall of the rotating seat 209 is hinged to the side of the quick clamp 210, and the lower end of the quick clamp 210 is hinged to the upper end of the fixing rod 208.

[0038] In this embodiment: the quick clamp 210 drives the fixed rod 208 to move, and the fixed rod 208 drives the sealing shell 101 to move.

[0039] The fixing mechanism 3 is located above the outer shell 1. The fixing mechanism 3 includes a rotating bar 302 located above the outer shell 1. A locking bar 306 is provided on one side of the rotating bar 302. The fixing mechanism 3 is used to fix the quick clamp 210.

[0040] Specifically, such as Figures 1-4 As shown, a hinge block 301 is fixedly installed on the top surface of the outer shell 1. The inner wall of the hinge block 301 is hinged to the lower end of the rotating bar 302. A slot 303 is provided on the side of the rotating bar 302. The slot 303 is slidably connected to the outer wall of the quick clamp 210.

[0041] In this embodiment, the quick clamp 210 is limited and fixed by the rotating bar 302 and the slot 303.

[0042] Specifically, such as Figures 1-4 As shown, the top surface of the rotating bar 302 is provided with a hinge groove 304, and a rotating shaft 305 is rotatably installed on the inner wall of the hinge groove 304. The outer wall of the rotating shaft 305 is fixedly connected to the inner wall of the clamping rod 306, and an arc-shaped groove is provided on the side of the clamping rod 306.

[0043] In this embodiment, the quick clamp 210 is further blocked and limited by the locking lever 306 and the arc-shaped groove.

[0044] Specifically, such as Figures 1-4 As shown, a torsion spring 307 is movably installed on the outer wall of the rotating shaft 305. The two ends of the torsion spring 307 are fixedly connected to the side of the locking rod 306 and the inner wall of the hinge groove 304, respectively. A stop groove 308 is provided on the side of the rotating bar 302. The inner wall of the stop groove 308 is slidably connected to the side of the locking rod 306.

[0045] In this embodiment: a torsion spring 307 applies torque to the latch 306, causing the latch 306 to press and block the latch 306.

[0046] The specific steps are as follows: Connect the connecting shell 201 to the explosion-proof valve on the battery pack, lock the quick-clamp 210, and move the fixing rod 208 and the sealing shell 101. The sealing shell 101 contacts one end of the explosion-proof valve, and the sealing shell 101 and connecting shell 201 press and fix one end of the explosion-proof valve. The sealing shell 101 also deforms the sealing ring 202, sealing the sealing shell 101 and one end of the explosion-proof valve, making the connection tighter and preventing gas leakage, thus improving detection accuracy. Press the lever 306, which rotates a certain angle and compresses the torsion spring 307. The slot 303 on the rotating bar 302 is rotated so that the quick clamp 210 is surrounded and limited by the outer wall of the quick clamp 210. The locking rod 306 is loosened. Under the action of the torsion spring 307, the torsion spring 307 pushes the locking rod 306 to reverse. The arc groove on the locking rod 306 clamps and limits the quick clamp 210, making it difficult for the quick clamp 210 to come out of the slot 303. When the operator accidentally touches the quick clamp 210 during operation, the quick clamp 210 is limited and fixed and does not open automatically. This makes it difficult for the connecting device and the sealing explosion-proof valve to loosen or separate, ensuring the smooth progress of the test and improving the efficiency of the test.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0048] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas-tight instrument connection device, comprising: The outer shell (1) is provided with a sealing shell (101) slidingly installed on the inner wall of the outer shell (1), and a connecting air pipe (102) is fixedly installed on the top surface of the sealing shell (101). The connecting mechanism (2) is arranged below the outer shell (1), and the connecting mechanism (2) comprises a sealing ring (202) fixedly installed on the bottom surface of the sealing shell (101), and a quick clamp (210) is arranged above the sealing shell (101), and the connecting mechanism (2) is used for connecting the sealing shell (101) and the battery pack. The fixing mechanism (3) is arranged above the outer shell (1), and the fixing mechanism (3) comprises a rotating strip (302) arranged above the outer shell (1), and a clamping rod (306) is arranged on one side of the rotating strip (302), and the fixing mechanism (3) is used for fixing the quick clamp (210).

2. A gas-tight instrument connection device according to claim 1, characterized in that The outer wall of the sealing shell (101) is fixedly provided with three limiting sleeves (203), and three limiting grooves (204) are formed in the outer wall of the outer shell (1), and the inner walls of the three limiting grooves (204) are slidingly connected with the outer walls of the three limiting sleeves (203), respectively.

3. A gas-tight instrument connection device according to claim 2, characterized in that The bottom surface of the outer shell (1) is fixedly provided with two connecting shells (201), and the three limiting sleeves (203) are slidingly installed on the inner walls of the three limiting sleeves (203), respectively.

4. A gas-tight instrument connection device according to claim 3, characterized in that The top surface of the outer shell (1) is provided with a through groove (206), and the connecting air pipe (102) is arranged in the through groove (206), and the top surface of the outer shell (1) is fixedly provided with a fixed block (207), and the top surface of the sealing shell (101) is fixedly provided with a fixed rod (208).

5. A gas-tight instrument connection device according to claim 4, characterized in that The upper end of the fixed rod (208) slidingly penetrates the inner wall of the upper end of the outer shell (1) and the bottom surface of the fixed block (207) and extends above the fixed block (207), and the outer wall of the fixed block (207) is fixedly provided with a rotating seat (209), and the inner wall of the rotating seat (209) is hingedly connected with the side surface of the quick clamp (210), and the lower end of the quick clamp (210) is hingedly connected with the upper end of the fixed rod (208).

6. A gas-tight instrument connection device according to claim 1, characterized in that The top surface of the outer shell (1) is fixedly provided with a hinge block (301), and the inner wall of the hinge block (301) is hingedly connected with the lower end of the rotating strip (302), and the side surface of the rotating strip (302) is provided with a clamping groove (303), and the clamping groove (303) is slidingly connected with the outer wall of the quick clamp (210).

7. A gas-tight instrument connection device according to claim 6, characterized in that The top surface of the rotating strip (302) is provided with a hinge groove (304), and a rotating shaft (305) is rotatably installed in the inner wall of the hinge groove (304), and the outer wall of the rotating shaft (305) is fixedly connected with the inner wall of the clamping rod (306), and the side surface of the clamping rod (306) is provided with an arc-shaped groove.

8. A gas-tight instrument connection device according to claim 7, characterized in that The outer wall of the rotating shaft (305) movably installs a torsion spring (307), the two ends of the torsion spring (307) are fixedly connected with the side of a clamping rod (306) and the inner wall of the hinge groove (304) respectively, the side of the rotating strip (302) is provided with a blocking groove (308), and the inner wall of the blocking groove (308) is in sliding connection with the side of the clamping rod (306).

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