Shell assembly airtightness test tool

Abstract

The utility model relates to the technical field of air tightness detection, in particular to a shell assembly air tightness testing tool which comprises a base, a guide rod is fixedly arranged on the base, a fixing plate is fixedly arranged at the top end of the guide rod, the shell assembly air tightness testing tool further comprises a pressing air cylinder which is fixedly arranged on the fixing plate, the output end of the pressing air cylinder is fixedly connected with a pressing plate, and the guide rod penetrates through the pressing plate; the mounting plate is fixedly arranged on the base and is used for placing a to-be-tested shell; the thin air cylinder is fixedly arranged on the base, an ejection block is arranged at the output end of the thin air cylinder, and a connector used for being connected with a pipeline is arranged on the ejection block; according to the air tightness testing tool for the shell assembly, the downward pressing height of the air cylinder can be adjusted according to the height of the shell through the self-adaptive adjusting mechanism, the situation that the shell is damaged due to the fact that the air cylinder overpresses the shell is avoided, and the limiting piece is arranged on the control switch and matched with a driving structure in the mounting plate and the top block, so that when no object to be tested exists and a pressurizing pipe is not completely installed, the air tightness of the shell assembly is ensured. And the control switch cannot be turned on, so that the detection safety is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of airtightness detection, and in particular to an airtightness testing tool for a shell assembly. Background Art

[0002] In the key links of shell production and processing, airtightness testing is particularly important, especially at the opening of the shell. The airtightness of this connection is directly related to the stability and reliability of the overall function. At present, airtightness testing is generally carried out using airtightness testing tooling. The basic principle is to seal the shell opening with a matching sealing piece, then fill the shell with compressed gas, and evaluate its airtightness performance by monitoring the pressure changes in the shell.

[0003] However, when using this type of test tooling, special attention should be paid to several safety issues: 1. Do not operate under pressurized conditions: During the airtight test, when the inside of the tooling is under pressurized conditions, it is strictly forbidden to disassemble the pipes at the joints of the tooling. This is because, once operated under pressurized conditions, the compressed gas released at high speed may cause serious harm to the human body, such as impact injuries, pressure injuries, etc.; 2. Ensure the integrity of the testing environment: It is strictly forbidden to perform airtight testing in the absence of a tested object or when the pressurized pipe is not correctly connected; this is because if the test tooling is pressurized without being properly installed or used, a large amount of compressed gas leaked from the inside of the tooling may not only waste resources, but may also pose a potential safety threat to the human body; therefore, the existing airtight testing tooling still has shortcomings and needs to be improved urgently. To this end, we propose a shell assembly airtight testing tool. Summary of the invention

[0004] In order to solve the above technical problems, the embodiment of the present application provides a housing assembly airtightness test tool, including a base, a guide rod is fixedly arranged on the base, a fixing plate is fixedly arranged on the top of the guide rod, and also includes:

[0005] The downward pressure cylinder is fixedly arranged on the fixed plate, and the output end of the downward pressure cylinder is fixedly connected to the pressing plate, and the guide rod passes through the pressing plate;

[0006] A mounting plate, fixedly arranged on the base, for placing the housing to be tested;

[0007] A thin cylinder is fixedly mounted on a base and has a top block at the output end, wherein a joint for connecting a pipeline is provided on the top block;

[0008] The adaptive adjustment mechanism, arranged on the pressure plate, can coordinate the stroke of the down-pressing cylinder and the thin cylinder to avoid over-pressuring the housing;

[0009] A control switch is arranged on the base to control the start and stop of the downward pressure cylinder and the thin cylinder;

[0010] The limiter is arranged on the outside of the control switch and can limit the movement of the control switch.

[0011] In some embodiments, a cavity is provided in the top block and a slot communicating with the cavity is opened on the top block, the joint is fixedly arranged on one side of the top block and communicating with the cavity, a pressurized tube is movably installed in the joint, an annular groove is opened on the joint, and an installation cylinder that is plugged into the annular groove is fixedly arranged on the outside of the pressurized tube.

[0012] In some embodiments, the adaptive adjustment mechanism includes a height adjustment plate fixedly mounted on a pressure plate, an air-controlled valve 1 is fixedly mounted on the base, the air-controlled valve 1 is connected to an air intake line of a thin cylinder, a valve stem is mounted on the top of the air-controlled valve 1, and the valve stem is located directly below the height adjustment plate.

[0013] In some embodiments, an air cylinder is fixedly arranged in the cavity, a piston and a piston rod are slidably arranged in the air cylinder, the piston rod slides through the top block and a connecting plate is arranged at the end, a connecting spring is fixedly arranged on the connecting plate, the end of the connecting spring is fixedly connected to the side wall of the top block, a movable ring is slidably arranged on the outside of the joint, the connecting plate is fixedly connected to the movable ring, positioning grooves are provided on both sides of the joint, a positioning rod is slidably arranged in the positioning groove, the end of the positioning rod is wedge-shaped, a positioning slot is provided on the outside of the mounting tube, a rubber block is fixedly arranged in the positioning slot.

[0014] In some embodiments, the control switch includes an air-controlled valve 2 fixedly mounted on a base, the air-controlled valve 2 is provided with a control handle, and the air-controlled valve 2 is connected to the air inlet pipelines of the downward pressure cylinder and the thin cylinder.

[0015] In some embodiments, a moving rod is slidably provided in the mounting plate, and a bevel is provided at one end of the moving rod located on the outer side of the mounting plate. A mounting spring is fixedly provided at the other end of the mounting plate, and the end of the mounting spring is fixedly connected to the mounting plate. A piston rod 2 is fixedly provided at the end of the moving rod, and the piston rod 2 slides through the mounting plate. An air cylinder 2 is fixedly provided on the side wall of the mounting plate, and a piston 2 is slidably provided in the air cylinder 2, and the piston 2 is fixedly connected to the piston rod 2.

[0016] In some embodiments, a sleeve is slidably provided in the joint, and when the pressurized tube is installed in the joint, it abuts against the sleeve to make it move, a side plate is fixedly provided on the outer side of the end of the sleeve, a side spring is fixedly provided on the side plate, the end of the side spring is fixedly connected to the inner wall of the joint, a connecting frame is fixedly provided on the side plate, an air cylinder three is fixedly provided in the cavity, a piston three and a piston rod three are slidably provided in the air cylinder three, and the piston rod three is fixedly connected to the connecting frame.

[0017] In some embodiments, a placement block is fixedly provided on the base, the placement block is hollow inside, the limiting component includes a limit block slidably provided inside the placement block, a connecting rod is provided on the limit block, a limit spring is provided on the outer side of the connecting rod, the two ends of the limit spring are respectively fixedly connected to the limit block and the inner wall of the placement block, and the connecting rod movably passes through the placement block.

[0018] In some embodiments, an air cylinder four is fixedly provided on the outside of the placement block, a piston four and a piston rod four are slidably provided inside the air cylinder four, the piston rod four movably passes through the air cylinder four, an air pipe is connected to the air cylinder four, the air pipe is filled with compressed air, and the other end of the air pipe is divided into two branches and respectively connected to the air cylinder two and the air cylinder three, a U-shaped rod is fixedly provided on the end of the piston rod four, and the U-shaped rod and the connecting rod are located on the same horizontal plane.

[0019] In some embodiments, two control switches are provided and are respectively arranged on both sides of the base.

[0020] The present invention has at least the following beneficial effects:

[0021] This kind of shell assembly airtightness test fixture can adjust the downward pressure height of the cylinder according to the shell height through an adaptive adjustment mechanism to avoid damage to the shell caused by over-pressurization of the cylinder. By setting a limit piece on the control switch, cooperating with the driving structure in the mounting plate and the top block, the control switch cannot be opened when there is no object to be tested and the pressurized pipe is not fully installed, thereby ensuring the safety of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Another structural diagram;

[0024] Figure 3 It is a side view structural schematic diagram of the present invention;

[0025] Figure 4 For the present invention Figure 1 Schematic diagram of local structure;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the thin cylinder of the present invention;

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the top block of the present invention;

[0029] Figure 8 For the present invention Figure 7The enlarged structural diagram at A in the middle;

[0030] Fig. 9 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0031] Fig.10 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0032] Fig.11 It is a schematic diagram of the structure of the base of the present invention;

[0033] Fig.12 It is a schematic diagram of the cross-sectional structure of the placement block of the present invention;

[0034] Fig.13 It is a schematic diagram of the four cross-sectional structures of the gas cylinder of the present invention.

[0035] In the figure: 1-base; 2-fixed plate; 3-down-pressure cylinder; 4-pressing plate; 5-adaptive adjustment mechanism; 51-height adjustment plate; 52-gas control valve 1; 53-valve stem; 6-control switch; 61-gas control valve 2; 62-control handle; 7-limiting member; 71-limiting block; 72-connecting rod; 73-limiting spring; 8-mounting plate; 9-thin cylinder; 10-top block; 11-joint; 12-pressurized pipe; 13-ring groove; 14-mounting cylinder; 15-gas cylinder 1; 16-piston 1; 17- Piston rod one; 18-connecting plate; 19-connecting spring; 20-movable ring; 21-positioning slide; 22-positioning rod; 23-positioning slot; 24-moving rod; 25-installing spring; 26-piston rod two; 27-gas cylinder two; 28-piston two; 29-sleeve; 30-side plate; 31-side spring; 32-connecting frame; 33-gas cylinder three; 34-piston three; 35-piston rod three; 36-placing block; 37-gas cylinder four; 38-piston four; 39-piston rod four; 40-U-shaped rod. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1:

[0038] See also Figure 1-13The present invention provides a technical solution: a shell assembly airtight test tool, including a base 1, a guide rod is fixedly arranged on the base 1, a fixing plate 2 is fixedly arranged on the top of the guide rod, and a downward pressure cylinder 3 is fixedly arranged on the fixing plate 2, and the output end of the downward pressure cylinder 3 is fixedly connected to a pressing plate 4, the guide rod passes through the pressing plate 4, a mounting plate 8 for placing the shell to be tested is fixedly arranged on the base 1, a thin cylinder 9 is also arranged on the base 1, a top block 10 is arranged at the output end of the thin cylinder 9, a joint 11 for connecting a pipeline is arranged on the top block 10, an adaptive adjustment mechanism 5 is arranged on the pressing plate 4, which can coordinate the stroke of the downward pressure cylinder 3 and the thin cylinder 9 to avoid over-pressure of the shell, a control switch 6 is arranged on the base 1, which is used to control the start and stop of the downward pressure cylinder 3 and the thin cylinder 9, and a limit member 7 is arranged on the outer side of the control switch 6;

[0039] A cavity is provided in the top block 10 and a slot communicating with the cavity is provided on the top block 10, and compressed gas is filled into the shell through the slot. A joint 11 is fixedly arranged on one side of the top block 10 and communicating with the cavity. A pressurized tube 12 is movably installed in the joint 11, and an annular groove 13 is provided on the joint 11. An installation tube 14 that is plugged into the annular groove 13 is fixedly provided on the outside of the pressurized tube 12. When installing the pressurized tube 12, the installation tube 14 can be inserted into the annular groove 13.

[0040] The adaptive adjustment mechanism 5 includes a height adjustment plate 51 fixedly mounted on the pressure plate 4, and an air control valve 52 is fixedly arranged on the base 1. The air control valve 52 is connected to the air intake pipeline of the thin cylinder 9. A valve stem 53 is arranged on the top of the air control valve 52, and the valve stem 53 is located directly below the height adjustment plate 51. During detection, the downward pressure cylinder 3 and the thin cylinder 9 are both started. When the downward pressure cylinder 3 drives the pressure plate 4 to move, it also drives the height adjustment plate 51 to move. When the height adjustment plate 51 moves and contacts with the valve stem 53, it drives the valve stem 53 to move to close the air control valve 52, thereby stopping the thin cylinder 9 from feeding. At the same time, the downward pressure cylinder 3 also just presses the shell, thereby avoiding the situation where the cylinder over-presses the shell and causes damage to the shell.

[0041] An air cylinder 15 is fixedly arranged in the cavity, a piston 16 and a piston rod 17 are slidably arranged in the air cylinder 15, the piston rod 17 slides through the top block 10 and a connecting plate 18 is arranged at the end thereof, a connecting spring 19 is fixedly arranged on the connecting plate 18, the end of the connecting spring 19 is fixedly connected to the side wall of the top block 10, a movable ring 20 is slidably arranged on the outer side of the joint 11, the connecting plate 18 is fixedly connected to the movable ring 20, positioning grooves 21 are provided on both sides of the joint 11, a positioning rod 22 is slidably arranged in the positioning groove 21, the end of the positioning rod 22 is wedge-shaped, a positioning slot 23 is provided on the outer side of the mounting cylinder 14, a rubber block is fixedly arranged in the positioning slot 23;

[0042] When the detection tooling is in a pressurized state, the air pressure in the cavity is relatively high, which drives the piston 16 and the piston rod 17 in the air cylinder 15 to move, the piston rod 17 drives the connecting plate 18 to move, and the connecting plate 18 drives the movable ring 20 to move. When moving, the movable ring 20 drives the positioning rod 22 to move into the positioning slot 23, thereby positioning the installation cylinder 14, so that in the pressurized state, the pressurized tube 12 at the joint 11 cannot be removed, thereby ensuring safety during use.

[0043] The control switch 6 includes an air-controlled valve 61 fixedly mounted on the base 1, and a control handle 62 is arranged on the air-controlled valve 61. The air-controlled valve 61 is connected to the air intake pipeline of the downward pressure cylinder 3 and the thin cylinder 9. Moving the control handle 62 can control the opening and closing of the air-controlled valve 61, thereby controlling the start and closing of the downward pressure cylinder 3 and the thin cylinder 9.

[0044] A moving rod 24 is slidably provided in the mounting plate 8, and one end of the moving rod 24 is provided with an inclined surface on the outer side of the mounting plate 8, and a mounting spring 25 is fixedly provided at the other end of the mounting plate 8, and the end of the mounting spring 25 is fixedly connected to the mounting plate 8, and a piston rod 26 is fixedly provided at the end of the moving rod 24, and the piston rod 26 slides through the mounting plate 8, and a gas cylinder 27 is fixedly provided on the side wall of the mounting plate 8, and a piston 28 is slidably provided in the gas cylinder 27, and the piston 28 is fixedly connected to the piston rod 26;

[0045] When there is a housing to be tested in the mounting plate 8 , the outer wall of the housing will squeeze the moving rod 24 to move the moving rod 24 , and the moving rod 24 drives the piston rod 26 and the piston 28 to move.

[0046] A sleeve 29 is slidably provided in the joint 11. When the pressurized tube 12 is installed in the joint 11, it abuts against the sleeve 29 to make it move. A side plate 30 is fixedly provided on the outer side of the end of the sleeve 29. A side spring 31 is fixedly provided on the side plate 30. The end of the side spring 31 is fixedly connected to the inner wall of the joint 11. A connecting frame 32 is fixedly provided on the side plate 30. An air cylinder 33 is fixedly provided in the cavity. A piston 34 and a piston rod 35 are slidably provided in the air cylinder 33. The piston rod 35 is fixedly connected to the connecting frame 32. When the pressurized tube 12 is installed in the joint 11, its end abuts against the sleeve 29 to make it move. The sleeve 29 drives the piston rod 35 and the piston 34 to move through the side plate 30 and the connecting frame 32.

[0047] A placement block 36 is fixedly arranged on the base 1, and the interior of the placement block 36 is hollow. The limiting member 7 includes a limiting block 71 slidably arranged inside the placement block 36, and a connecting rod 72 is arranged on the limiting block 71. A limiting spring 73 is arranged on the outer side of the connecting rod 72. The two ends of the limiting spring 73 are respectively fixedly connected to the limiting block 71 and the inner wall of the placement block 36. The connecting rod 72 movably penetrates the placement block 36. When the limiting block 71 is locked, the control handle 62 cannot move either.

[0048] An air cylinder 4 37 is fixedly provided on the outside of the placement block 36, and a piston 4 38 and a piston rod 4 39 are slidably provided inside the air cylinder 4 37. The piston rod 4 39 movably penetrates the air cylinder 4 37. An air pipe is connected to the air cylinder 4 37. The air pipe is filled with compressed air, and the other end of the air pipe is divided into two branches and respectively connected to the air cylinder 2 27 and the air cylinder 3 33. A U-shaped rod 40 is fixedly provided on the end of the piston rod 4 39, and the U-shaped rod 40 and the connecting rod 72 are located on the same horizontal plane.

[0049] When the second piston 28 and the third piston 34 move, the compressed air in the air pipe moves into the fourth cylinder 37, and the compressed air drives the fourth piston rod 39 to move, thereby driving the U-shaped rod 40 to move, so that the U-shaped rod 40 and the connecting rod 72 are staggered. At this time, the control handle 62 can be moved. Similarly, when there is no housing to be tested on the mounting plate 8, the second piston 28 does not move. Even if the pressurized pipe 12 is installed at the joint 11, so that the third piston 34 moves, the distance moved by the fourth piston rod 39 is not enough for the U-shaped rod 40 to move. 0 is offset from the connecting rod 72, and the control handle 62 is restricted from moving by the limit block 71, then the tooling cannot be used. Similarly, when there is a shell to be tested on the mounting plate 8 but the pressurized pipe 12 is not connected, the U-shaped rod 40 and the connecting rod 72 cannot be completely offset. Furthermore, when there is no shell to be tested and the pressurized pipe 12 is not correctly installed, the control handle 62 cannot move. Only when there is a shell to be tested on the mounting plate 8 and the pressurized pipe 12 is correctly connected, can the control handle 62 be driven to open the air control valve 61 to perform an airtightness test.

[0050] Embodiment 2:

[0051] The main structure of the second embodiment is the same as that of the first embodiment, and the only difference is that two control switches 6 are provided and are respectively arranged on both sides of the base 1, so that the tooling can only be started when both control switches 6 are activated, and can only be started when both hands drive the two control switches 6 respectively, so as to avoid pinching the hands of the tooling and ensure safety during use.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A housing assembly airtightness test fixture, comprising a base (1), a guide rod fixedly arranged on the base (1), a fixing plate (2) fixedly arranged on the top of the guide rod, characterized in that: Also included are: The downward pressure cylinder (3) is fixedly arranged on the fixed plate (2), and the output end of the downward pressure cylinder (3) is fixedly connected to the pressing plate (4), and the guide rod passes through the pressing plate (4); A mounting plate (8) is fixedly mounted on the base (1) and is used to place the housing to be tested; A thin cylinder (9) is fixedly mounted on a base (1) and has a top block (10) at its output end, wherein a joint (11) for connecting a pipeline is disposed on the top block (10); An adaptive adjustment mechanism (5) is arranged on the pressure plate (4) and is capable of coordinating the strokes of the downward pressure cylinder (3) and the thin cylinder (9) to avoid over-pressurizing the housing; A control switch (6) is arranged on the base (1) and is used to control the start and stop of the downward pressure cylinder (3) and the thin cylinder (9); The limiting member (7) is arranged outside the control switch (6) and can limit the movement of the control switch (6).

2. The airtightness test tool for a housing assembly according to claim 1, characterized in that: The top block (10) is provided with a cavity and the top block (10) is provided with a notch which is communicated with the cavity. The joint (11) is fixedly arranged on one side of the top block (10) and is communicated with the cavity. A pressurizing tube (12) is movably installed in the joint (11). The joint (11) is provided with an annular groove (13). An installation cylinder (14) which is plugged into and matched with the annular groove (13) is fixedly arranged on the outside of the pressurizing tube (12).

3. The airtightness test tool for a housing assembly according to claim 2, characterized in that: The adaptive adjustment mechanism (5) comprises a height adjustment plate (51) fixedly mounted on the pressure plate (4); a gas control valve (52) is fixedly arranged on the base (1); the gas control valve (52) is connected to the air intake pipeline of the thin cylinder (9); a valve rod (53) is arranged on the top of the gas control valve (52), and the valve rod (53) is located directly below the height adjustment plate (51).

4. The airtightness test tool for a housing assembly according to claim 3, characterized in that: An air cylinder (15) is fixedly arranged in the cavity, a piston (16) and a piston rod (17) are slidably arranged in the air cylinder (15), the piston rod (17) slides through the top block (10) and a connecting plate (18) is arranged at the end thereof, a connecting spring (19) is fixedly arranged on the connecting plate (18), the end of the connecting spring (19) is fixedly connected to the side wall of the top block (10), a movable ring (20) is slidably arranged on the outer side of the joint (11), the connecting plate (18) is fixedly connected to the movable ring (20), positioning grooves (21) are provided on both sides of the joint (11), a positioning rod (22) is slidably arranged in the positioning groove (21), the end of the positioning rod (22) is wedge-shaped, a positioning groove (23) is provided on the outer side of the mounting tube (14), a rubber block is fixedly arranged in the positioning groove (23).

5. The airtightness test tool for a housing assembly according to claim 4, characterized in that: The control switch (6) comprises a second air control valve (61) fixedly arranged on the base (1), a control handle (62) being arranged on the second air control valve (61), and the second air control valve (61) is connected to the air intake pipeline of the downward pressure cylinder (3) and the thin cylinder (9).

6. The airtightness test tool for a housing assembly according to claim 5, characterized in that: A moving rod (24) is slidably arranged in the mounting plate (8), and an inclined surface is provided at one end of the moving rod (24) located outside the mounting plate (8). A mounting spring (25) is fixedly arranged at the other end of the mounting plate (8), and the end of the mounting spring (25) is fixedly connected to the mounting plate (8). A second piston rod (26) is fixedly arranged at the end of the moving rod (24), and the second piston rod (26) slides through the mounting plate (8). A second air cylinder (27) is fixedly arranged on the side wall of the mounting plate (8), and a second piston (28) is slidably arranged in the second air cylinder (27), and the second piston (28) is fixedly connected to the second piston rod (26).

7. The airtightness test tool for a housing assembly according to claim 6, characterized in that: A sleeve (29) is slidably arranged in the joint (11). When the pressure tube (12) is installed in the joint (11), it abuts against the sleeve (29) to move it. A side plate (30) is fixedly arranged on the outer side of the end of the sleeve (29). A side spring (31) is fixedly arranged on the side plate (30). The end of the side spring (31) is fixedly connected to the inner wall of the joint (11). A connecting frame (32) is fixedly arranged on the side plate (30). An air cylinder (33) is fixedly arranged in the cavity. A piston (34) and a piston rod (35) are slidably arranged in the air cylinder (33). The piston rod (35) is fixedly connected to the connecting frame (32).

8. The airtightness test tool for a housing assembly according to claim 7, characterized in that: A placement block (36) is fixedly arranged on the base (1), the interior of the placement block (36) is hollow, the limiting member (7) comprises a limiting block (71) slidably arranged inside the placement block (36), a connecting rod (72) is arranged on the limiting block (71), a limiting spring (73) is arranged outside the connecting rod (72), two ends of the limiting spring (73) are respectively fixedly connected to the limiting block (71) and the inner wall of the placement block (36), and the connecting rod (72) movably passes through the placement block (36).

9. The airtightness test tool for a housing assembly according to claim 8, characterized in that: An air cylinder (37) is fixedly arranged on the outside of the placement block (36), and a piston (38) and a piston rod (39) are slidably arranged inside the air cylinder (37). The piston rod (39) movably passes through the air cylinder (37). An air pipe is connected to the air cylinder (37), and the air pipe is filled with compressed air. The other end of the air pipe is divided into two branches and is respectively connected to the air cylinder (27) and the air cylinder (33). A U-shaped rod (40) is fixedly arranged at the end of the piston rod (39), and the U-shaped rod (40) and the connecting rod (72) are located on the same horizontal plane.

10. The airtightness test tool for a housing assembly according to claim 9, characterized in that: Two control switches (6) are provided and are respectively arranged on both sides of the base (1).

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