A waterproof testing method for instrument manufacturing

Abstract

The present invention discloses a waterproof test method for instrument manufacturing, which relates to the technical field of instrument testing, and includes a waterproof tester body, a test tube, and a transmission tube. A tube cover is provided on the top of the test tube, and a partition plate is fixedly connected to the inner wall of the test tube, and an expansion and rotation mechanism is provided on the inner wall of the test tube. This waterproof test method for instrument manufacturing, when testing, can use the instrument's own gravity to drive the transmission column to descend after placing the instrument, so that four rubber balloons are inflated, so that when the instrument floats up later, the four inflated rubber balloons can be used to block and restrict the instrument, so that it is completely immersed in the water body, and at the same time, the connection between the transmission column and the transmission shaft can be used to make multiple stirring rods stir the water body, so that the water flow can more comprehensively cover the surface of the instrument, thereby ensuring the evaluation accuracy of the waterproof test equipment.

Description

Technical Field

[0001] The invention relates to the technical field of instrument testing, in particular to a waterproof testing method for instrument manufacturing. Background Art

[0002] Instruments are used to measure and monitor various physical quantities, chemical quantities or other parameters, such as temperature, pressure, flow, voltage, current, speed, etc. These measurement data are crucial for scientific research, engineering design, production and manufacturing, environmental monitoring, etc., especially for instruments that need to be used underwater for a long time. Therefore, in the manufacturing process of some instruments, it is usually necessary to conduct waterproof testing on them.

[0003] The waterproof tester is mainly used to test the waterproofness of finished instruments. The instruments are placed inside the waterproof tester for instrument manufacturing, and then the water flow rate gradually released by the waterproof tester is used to immerse the instruments for waterproof level test. Finally, the waterproof data of the instruments is displayed on the display screen to obtain the waterproof level result.

[0004] However, during use, since some instruments and meters have fewer internal components and the outer casing is made of lightweight aluminum metal sheet material, the instruments and meters are lifted up by the buoyancy of the water, resulting in part of the instruments and meters being unable to be submerged. There are also cases where a fixing mechanism is used to fix the instruments and meters to achieve complete immersion, but there are situations where the clamped parts are difficult for water to penetrate, and thus the waterproof performance of the instruments and meters cannot be accurately evaluated, resulting in water damage or other damage to the product in actual use, thus affecting the actual quality of the product. Summary of the invention

[0005] The object of the present invention is to provide a waterproof testing method for instrument manufacturing to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a waterproof testing method for instrument manufacturing, characterized in that it comprises the following steps:

[0007] S1: Use the gravity of the instrument to drive the transmission column downward, so that the pressure plate squeezes the air below, so that the air below the pressure plate can rush into the four rubber balloons through the connecting pipe, and then the four rubber balloons are inflated during the descending process of the pressure plate. The four inflated rubber balloons are used to block the top of the instrument and limit it to a certain height to ensure that it is completely immersed in the water;

[0008] S2: By utilizing the clamping connection between the connection block and the connection groove, the six stirring rods can be driven to rotate by the driving motor, stirring the water so that the water flow can more evenly cover the various surfaces of the instrument. At the same time, the stirring rod can contact the trigger block to lift the trigger block, so that the impact block can quickly squeeze the water above, so as to intermittently spray water to impact the instrument through multiple water spray holes;

[0009] S3: When the test is completed, the transmission column is controlled to rotate counterclockwise so that the top of the stirring rod slides to the gap between adjacent limiting blocks. At this time, there is no auxiliary restriction from the auxiliary block, and the four inflated rubber balloons shrink, driving the transmission column to rise back to its original position. At this time, the experimenter can open the cylinder cover to take out the instruments floating on the water surface, and then discharge the water in the test cylinder through the transmission pipe for the next test.

[0010] Preferably, the waterproof test method uses a waterproof tester body, a test tube and a transmission tube for testing, the top of the test tube is provided with a tube cover, and the inner wall of the test tube is fixedly connected with a partition plate;

[0011] The inner wall of the test cylinder is provided with an expansion and rotation mechanism, so that when testing, it can automatically expand to block and restrict instruments and meters, and stir the water body;

[0012] The inner wall of the test cylinder is provided with limiting impact mechanisms at equal distances, so that during the test, water jet impact can be intermittently performed on the instrument to simulate the actual use environment.

[0013] Preferably, the expansion and rotation mechanism includes a transmission column, and the outer wall of the transmission column slides in fit with the inner center of the partition plate, the bottom outer wall of the transmission column is fixedly connected with a pressure plate, and the outer wall of the pressure plate slides in fit with the inner wall of the test cylinder, the bottom side wall of the test cylinder is penetrated by through holes at equal distances, and the outer wall of the test cylinder is fixedly connected with a connecting tube corresponding to the through hole, and one end of the connecting tube is connected to the inner wall of the through hole.

[0014] Preferably, the other end of the connecting tube passes through the top side of the test cylinder and is fixedly connected to a rubber balloon, the top outer wall of the transmission column is fixedly connected to a connecting rod at an equal distance, and the other end of the connecting rod is fixedly connected to a stirring rod, and one side outer wall of the stirring rod slides in contact with the inner wall of the test cylinder.

[0015] Preferably, the bottom center of the test cylinder is rotatably connected to a transmission shaft, and the top of the transmission shaft is fixedly connected to a connecting block at an equal distance, a connecting groove is opened at the bottom of the transmission column corresponding to the connecting block, and the inner wall of the connecting groove fits and slides with the outer wall of the connecting block.

[0016] Preferably, the impact limiting mechanism includes a limiting block, and a side wall of the limiting block is fixed to the inner wall of the test cylinder, a movable groove is opened at the same end of the six limiting blocks, and the inner wall of the movable groove is rotatably connected to a rotating drum, and the outer wall of the rotating drum is fixedly connected to an auxiliary block.

[0017] Preferably, a torsion spring is overlapped on the inner wall of the rotating drum, and the other end of the torsion spring is overlapped on the inner wall of the movable groove.

[0018] Preferably, a through groove is formed through the top of the limiting block, and a fixed cylinder is fixedly connected to the inner wall of the through groove, a sliding cavity is formed at the bottom of the fixed cylinder, and a fixed block is fixedly connected to the inner wall of the sliding cavity, and a sliding rod is slidably connected to the inner center of the fixed block.

[0019] Preferably, a trigger block is fixedly connected to the bottom of the sliding rod, and the trigger block is semicircular, an impact block is fixedly connected to the top of the sliding rod, and the outer wall of the impact block slides in contact with the inner wall of the sliding cavity, and water spray holes are equidistantly provided on the top outer wall of the fixed cylinder, and the inner wall of the water spray hole is connected to the inner wall of the sliding cavity.

[0020] Preferably, a return spring is fitted on the outer wall of the slide rod, one end of the return spring is fixedly connected to the bottom of the fixed block, and the other end of the return spring is fixedly connected to the top of the trigger block.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. When conducting the test, after placing the instrument, the instrument's own gravity can be used to drive the transmission column to descend, so that the four rubber balloons can be inflated. When the instrument floats up later, the four inflated rubber balloons can be used to block and restrict the instrument, so that it is completely immersed in the water. At the same time, the connection between the transmission column and the transmission shaft can be used to stir the water with multiple stirring rods, so that the water flow can more comprehensively cover the surface of the instrument, thereby ensuring the evaluation accuracy of this waterproof testing equipment.

[0023] 2. During the test, the trigger block can be squeezed intermittently while the stirring rod is stirring the water, so that the impact block can be used to squeeze the water in the sliding cavity, so that the fixed cylinder can intermittently spray water to the instrument through multiple water spray holes, simulating the actual use environment, ensuring the reliability of the test, and further ensuring the evaluation accuracy of the waterproof test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of the waterproof test of the present invention;

[0025] Figure 2It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure inside the test tube of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the expansion and rotation mechanism of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the first part of the impact limiting mechanism of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the second part of the impact limiting mechanism of the present invention.

[0030] In the figure: 1. Waterproof tester body; 2. Test tube; 3. Tube cover; 4. Partition plate; 7. Through hole; 8. Transmission shaft; 9. Connecting block; 10. Transmission tube; 5. Expansion and rotation mechanism; 501. Transmission column; 502. Pressure plate; 503. Connecting tube; 504. Rubber balloon; 505. Connecting rod; 506. Stirring rod; 507. Connecting groove; 6. Impact limiting mechanism; 601. Limiting block; 602. Movable groove; 603. Rotating cylinder; 604. Auxiliary block; 605. Torsion spring; 606. Through groove; 607. Fixed cylinder; 608. Sliding cavity; 609. Fixed block; 610. Sliding rod; 611. Trigger block; 612. Impact block; 613. Water spray hole; 614. Reset spring. DETAILED DESCRIPTION

[0031] 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.

[0032] For examples, see Figure 1-6 The present invention provides a waterproof testing method for instrument manufacturing as follows:

[0033] First, the experimenter calibrates the waterproof tester body 1, then opens the cylinder cover 3, and then puts the instrument to be tested into the test cylinder 2, and uses the gravity of the instrument to drive the transmission column 501 to descend, so that the pressure plate 502 squeezes the air below, so that the air below the pressure plate 502 can rush into the four rubber balloons 504 through the connecting pipe 503, and then the four rubber balloons 504 are inflated during the descending process of the pressure plate 502, and the four inflated rubber balloons 504 are used to block the top of the instrument and limit it to a certain height to ensure that it is completely immersed in the water;

[0034] Then, after the four rubber balloons 504 are fully inflated, the bottom of the transmission column 501 fits with the top of the transmission shaft 8, and the connection between the connecting block 9 and the connecting groove 507 is used to drive the transmission column 501 to rotate through the driving motor, thereby driving the six stirring rods 506 to rotate. Stirring the water can increase the fluidity and circulation of the water, and can drive the instrument to move slightly under the flow of water, so that the contact surface between the instrument and the rubber balloon 504 can be continuously changed, so that the water flow can cover the various surfaces of the instrument more evenly.

[0035] Then, when the stirring rod 506 rotates clockwise, it can contact the trigger block 611. The semicircular surface of the trigger block 611 is used to lift the trigger block 611 when in contact, so that the impact block 612 can be driven by the sliding rod 610 to quickly squeeze the water above, so that the fixed cylinder 607 can intermittently spray water to the instrument through the multiple water spray holes 613 to simulate the actual use environment;

[0036] When the test is completed, the transmission column 501 is controlled to rotate counterclockwise so that the top of the stirring rod 506 slides to the gap between the adjacent limiting blocks 601. At this time, there is no auxiliary restriction of the auxiliary block 604, and the four inflated rubber balloons 504 shrink, driving the transmission column 501 to rise back to its original position. At this time, the experimenter can open the cylinder cover 3 to take out the instruments floating on the water surface, and then discharge the water in the test cylinder 2 through the transmission tube 10 for the next test.

[0037] The waterproof test method uses a waterproof tester body 1, a test tube 2 and a transmission tube 10 for testing. A tube cover 3 is provided on the top of the test tube 2, and a partition plate 4 is fixedly connected to the inner wall of the test tube 2.

[0038] The inner wall of the test cylinder 2 is provided with an expansion and rotation mechanism 5. Further, the expansion and rotation mechanism 5 includes a transmission column 501, and the outer wall of the transmission column 501 fits and slides with the inner center of the partition plate 4. The bottom outer wall of the transmission column 501 is fixedly connected with a pressure plate 502, and the outer wall of the pressure plate 502 fits and slides with the inner wall of the test cylinder 2. Through holes 7 are opened at equal distances through the bottom side wall of the test cylinder 2, and the outer wall of the test cylinder 2 is fixedly connected with a connecting tube 503 corresponding to the through hole 7, and one end of the connecting tube 503 is connected with the inner wall of the through hole 7.

[0039] More specifically, when conducting the test, the experimenter first calibrates the waterproof tester body 1, then opens the cylinder cover 3, and then puts the instrument to be tested into the test cylinder 2. At this time, the outer wall of the transmission column 501 and the inner center of the partition plate 4 are fitted and slid, and the bottom outer wall of the transmission column 501 is fixedly connected with a pressure plate 502, and the outer wall of the pressure plate 502 and the inner wall of the test cylinder 2 are fitted and slid, so that the transmission column 501 can be driven to descend by the gravity of the instrument itself, so that the pressure plate 502 squeezes the air below;

[0040] Then, through holes 7 are formed through the bottom side wall of the test cylinder 2 at equal intervals, and a connecting tube 503 is fixedly connected to the outer wall of the test cylinder 2 corresponding to the through hole 7, and one end of the connecting tube 503 is connected to the inner wall of the through hole 7, and the other end of the connecting tube 503 is fixedly connected to a rubber balloon 504 through the top side of the test cylinder 2, so that the air below the pressure plate 502 can rush into the four rubber balloons 504 through the connecting tube 503, and then the four rubber balloons 504 are expanded during the descending process of the pressure plate 502, so that when water is subsequently sent into the test cylinder 2 through the transmission tube 10 to float the instrument, the four inflated rubber balloons 504 can be used to block the top of the instrument and limit it to a certain height to ensure that it is completely immersed in the water.

[0041] Then, the transmission shaft 8 is connected to the center of the bottom of the test tube 2, and the top of the transmission shaft 8 is fixedly connected to the connecting block 9 at an equal distance, and a connecting groove 507 is opened at the bottom of the transmission column 501 corresponding to the connecting block 9, and the inner wall of the connecting groove 507 and the outer wall of the connecting block 9 are fitted and slid, and the bottom of the transmission shaft 8 is connected to the driving motor in a transmission manner, so that after the four rubber balloons 504 are fully inflated, the bottom of the transmission column 501 fits with the top of the transmission shaft 8, and the connection between the connecting block 9 and the connecting groove 507 is used to make it possible to The driving motor drives the transmission column 501 to rotate, and then the top outer wall of the transmission column 501 is fixedly connected with a connecting rod 505 at an equal distance, and the other end of the connecting rod 505 is fixedly connected with a stirring rod 506, so that the six stirring rods 506 can be driven to rotate by the transmission column 501. Stirring the water can increase the fluidity and circulation in the water, and can drive the instrument to move slightly under the flow of water, so that the contact surface between the instrument and the rubber balloon 504 can be continuously changed, so that the water flow can cover various surfaces of the instrument more evenly;

[0042] As described above, when conducting a test, after placing the instrument, the instrument's own gravity can be used to drive the transmission column 501 to descend, so that the four rubber balloons 504 can be inflated. When the instrument floats up later, the four inflated rubber balloons 504 can be used to block and restrict the instrument so that it is completely immersed in the water. At the same time, the connection between the transmission column 501 and the transmission shaft 8 can be used to stir the water with multiple stirring rods 506, so that the water flow can more comprehensively cover the surface of the instrument, thereby ensuring the evaluation accuracy of the waterproof testing equipment.

[0043] The inner wall of the test cylinder 2 is provided with impact limiting mechanisms 6 at equal distances. Further, the impact limiting mechanism 6 includes a limiting block 601, and one side wall of the limiting block 601 is fixed to the inner side wall of the test cylinder 2. A movable groove 602 is opened at the same end of the six limiting blocks 601, and the inner wall of the movable groove 602 is rotatably connected to a rotating drum 603, and the outer wall of the rotating drum 603 is fixedly connected to an auxiliary block 604;

[0044] More specifically, in order to achieve that the transmission column 501 can accurately engage the connection block 9 with the connection groove 507 when it descends, and the transmission column 501 can continue to engage with the instrument after it floats, a side wall of the limiting block 601 is fixed to the inner side wall of the test tube 2, and the two side walls of any stirring rod 506 are fitted and slid with the adjacent side walls of any two adjacent limiting blocks 601, so that the rotation angle of the transmission column 501 can be limited by the limiting block 601, so that the transmission column 501 can accurately engage the connection block 9 with the connection groove 507 when it descends;

[0045] Then, when the four rubber balloons 504 are fully inflated by the gravity of the instrument, the stirring rod 506 moves down to the lowest position, and the top of the stirring rod 506 is at the same level as the bottom surface of the limiting block 601. At this time, the driving motor drives the transmission column 501 to rotate slightly clockwise so that the top of the stirring rod 506 fits the bottom surface of the limiting block 601. At this time, after the test tube 2 is filled with water to float the instrument, the current height of the stirring rod 506 can be limited by the limiting block 601.

[0046] Next, when the stirring rod 506 is driven to rotate clockwise, in order to make up for the gap between the adjacent limiting blocks 601, a movable groove 602 is opened at the same end of the six limiting blocks 601, and the inner wall of the movable groove 602 is rotatably connected to the rotating drum 603, and the outer wall of the rotating drum 603 is fixedly connected to the auxiliary block 604, so that when the stirring rod 506 rotates clockwise, it can contact the auxiliary block 604 and drive the auxiliary block 604 to rotate from the vertical direction to the horizontal direction to make up for the gap, so that the transmission column 501 can continue to be engaged and driven after the instrument floats;

[0047] Then, a sliding cavity 608 is opened at the bottom of the fixed cylinder 607, and a fixed block 609 is fixedly connected to the inner wall of the sliding cavity 608, and a sliding rod 610 is slidably connected to the inner center of the fixed block 609, and a trigger block 611 is fixedly connected to the bottom of the sliding rod 610, and the trigger block 611 is semicircular, so that when the stirring rod 506 rotates clockwise, it can contact the trigger block 611, and the semicircular surface of the trigger block 611 is used to make the trigger block 611 lifted up when in contact, and at this time, the sliding rod 61 0 is fixedly connected with an impact block 612, and the outer wall of the impact block 612 slides in contact with the inner wall of the sliding cavity 608, and water spray holes 613 are opened at equal distances on the outer wall of the top of the fixed cylinder 607, and the inner wall of the water spray hole 613 is connected with the inner wall of the sliding cavity 608, so that the impact block 612 can be driven by the sliding rod 610 to quickly squeeze the water above, so that the fixed cylinder 607 can intermittently spray water to the instrument through multiple water spray holes 613 to simulate the actual use environment;

[0048] Then, a return spring 614 is provided on the outer wall of the slide rod 610, one end of the return spring 614 is fixedly connected to the bottom of the fixed block 609, and the other end of the return spring 614 is fixedly connected to the top of the trigger block 611, so that after the trigger block 611 is lifted up, the return spring 614 can be further compressed, so that the return spring 614 drives the trigger block 611 to return to its original position, thereby realizing intermittent water jet impact;

[0049] Then, when the test is completed, the transmission column 501 is controlled to rotate counterclockwise, so that the top of the stirring rod 506 slides to the gap between the adjacent limiting blocks 601. At this time, there is no auxiliary restriction of the auxiliary block 604, and the four inflated rubber balloons 504 shrink, driving the transmission column 501 to rise back to the original position. At this time, the experimenter can open the cylinder cover 3 to take out the instruments floating on the surface of the water, and then discharge the water in the test cylinder 2 through the transmission pipe 10, waiting for the next test;

[0050] Furthermore, in order to prevent the auxiliary block 604 from floating up to fill the gap under the buoyancy of the water body, so that the top of the stirring rod 506 slides to the gap between the adjacent limiting blocks 601 and cannot rise when the test is completed, a torsion spring 605 is overlapped on the inner wall of the rotating cylinder 603, and the other end of the torsion spring 605 is overlapped on the inner wall of the movable groove 602, so that the state of the auxiliary block 604 can be limited by the torsion spring 605 and kept in a vertical state;

[0051] As described above, during the test, the trigger block 611 can be squeezed intermittently while the stirring rod 506 is stirring the water, so that the impact block 612 can be used to squeeze the water in the sliding cavity 608, so that the fixed cylinder 607 can intermittently spray water to the instrument through the multiple water spray holes 613, simulating the actual use environment, ensuring the reliability of the test, and further ensuring the evaluation accuracy of the waterproof testing equipment.

[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 waterproof testing method for instrument manufacturing, characterized in that: The following steps are involved: S1: Place and expand, using the instrument's own gravity to drive the transmission column (501) to descend, so that the pressure plate (502) squeezes the air below, so that the air below the pressure plate (502) rushes into the four rubber balloons (504) through the connecting pipe (503), and the four rubber balloons (504) are expanded during the descending process of the pressure plate (502). The four expanded rubber balloons (504) are used to block the top of the instrument and limit it to a certain height, ensuring that it is completely immersed in the water body; S2: stirring and impacting, utilizing the clamping connection between the connection block (9) and the connection groove (507), and then driving the six stirring rods (506) to rotate through the driving motor, stirring the water body so that the water flow covers all surfaces of the instrument more evenly; S3: Reverse and take. When the test is completed, the transmission column (501) is controlled to rotate counterclockwise so that the top of the stirring rod (506) slides to the gap between the adjacent limiting blocks (601). At this time, there is no auxiliary restriction of the auxiliary block (604). The four inflated rubber balloons (504) shrink, driving the transmission column (501) to rise back to the original position. At this time, the experimenter can open the cylinder cover (3) to take out the instruments floating on the surface of the water, and then discharge the water in the test cylinder (2) through the transmission tube (10) to wait for the next test; The inner wall of the test cylinder (2) is provided with an expansion rotation mechanism (5), and the inner wall of the test cylinder (2) is provided with impact limiting mechanisms (6) at equal distances; The expansion rotation mechanism (5) comprises a transmission column (501), and the outer wall of the transmission column (501) is fitted and slid with the inner center of the partition plate (4), the bottom outer wall of the transmission column (501) is fixedly connected with a pressure plate (502), and the outer wall of the pressure plate (502) is fitted and slid with the inner wall of the test cylinder (2), the bottom side wall of the test cylinder (2) is equidistantly penetrated with through holes (7), and the outer wall of the test cylinder (2) is fixedly connected with a connecting pipe (503) corresponding to the through hole (7). ), one end of the connecting tube (503) is in communication with the inner wall of the through hole (7); the other end of the connecting tube (503) passes through the top side of the test cylinder (2) and is fixedly connected to a rubber balloon (504); a connecting rod (505) is fixedly connected to the top outer wall of the transmission column (501) at an equal distance, and the other end of the connecting rod (505) is fixedly connected to a stirring rod (506); an outer wall of one side of the stirring rod (506) is fitted and slidably connected to the inner wall of the test cylinder (2); The bottom center of the test cylinder (2) is rotatably connected to a transmission shaft (8), and the top of the transmission shaft (8) is fixedly connected to a connection block (9) at an equal distance, and a connection groove (507) is formed at the bottom of the transmission column (501) corresponding to the connection block (9), and the inner wall of the connection groove (507) is slidably fitted with the outer wall of the connection block (9).

2. A waterproof testing method for instrument manufacturing according to claim 1, characterized in that: The stirring and impacting step also includes: The stirring rod (506) contacts the trigger block (611) to lift the trigger block (611), and the impact block (612) is used to quickly squeeze the water body above, so as to intermittently spray water to impact the instrument through the multiple water spray holes (613).

3. A waterproof testing method for instrument manufacturing according to claim 2, characterized in that: The waterproof testing method adopts a waterproof tester body (1), a test tube (2) and a transmission tube (10) for testing, wherein a tube cover (3) is arranged on the top of the test tube (2), and a partition plate (4) is fixedly connected to the inner wall of the test tube (2).

4. A waterproof testing method for instrument manufacturing according to claim 3, characterized in that: The impact limiting mechanism (6) comprises a limiting block (601), and a side wall of the limiting block (601) is fixed to the inner side wall of the test cylinder (2); a movable groove (602) is formed at the same end of the six limiting blocks (601); the inner wall of the movable groove (602) is rotatably connected to a rotating cylinder (603); and the outer wall of the rotating cylinder (603) is fixedly connected to an auxiliary block (604).

5. A waterproof testing method for instrument manufacturing according to claim 4, characterized in that: A torsion spring (605) is overlapped on the inner wall of the rotating cylinder (603), and the other end of the torsion spring (605) is overlapped on the inner wall of the movable groove (602).

6. A waterproof testing method for instrument manufacturing according to claim 5, characterized in that: A through slot (606) is formed through the top of the limiting block (601), and a fixing cylinder (607) is fixedly connected to the inner wall of the through slot (606), and a sliding cavity (608) is formed at the bottom of the fixing cylinder (607).

7. A waterproof testing method for instrument manufacturing according to claim 6, characterized in that: A fixing block (609) is fixedly connected to the inner wall of the sliding cavity (608), and a sliding rod (610) is slidably connected to the inner center of the fixing block (609).

8. A waterproof testing method for instrument manufacturing according to claim 7, characterized in that: The bottom of the slide bar (610) is fixedly connected to a trigger block (611), and the trigger block (611) is semicircular. The top of the slide bar (610) is fixedly connected to an impact block (612), and the outer wall of the impact block (612) slides in contact with the inner wall of the slide cavity (608).

9. A waterproof testing method for instrument manufacturing according to claim 8, characterized in that: The top outer wall of the fixed cylinder (607) is provided with water spray holes (613) at equal intervals, and the inner walls of the water spray holes (613) are connected to the inner wall of the sliding cavity (608).

10. A waterproof testing method for instrument manufacturing according to claim 9, characterized in that: A return spring (614) is fitted on the outer wall of the slide rod (610), one end of the return spring (614) is fixedly connected to the bottom of the fixed block (609), and the other end of the return spring (614) is fixedly connected to the top of the trigger block (611).

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