Sealing waterproof performance testing device of microsensor

Abstract

The invention discloses a sealing waterproof performance testing device for a micro sensor, and relates to the technical field of sensor sealing performance testing, and the sealing waterproof performance testing device comprises a testing assembly which comprises a testing box with a testing cavity and an opening at one side, a tray arranged in the testing cavity, and a spraying pipe arranged above the tray; wherein the spraying pipe is an arc bent pipe, nozzles are arranged on the inner concave face of the spraying pipe, the nozzles can discharge water in the radial direction of the spraying pipe, the spraying pipe is rotationally arranged in the testing cavity, and an adjusting assembly used for controlling the spraying pipe to rotate so that the nozzles can discharge water in the direction of the tray is arranged in the testing cavity. Liquid is injected into the tray through the spraying pipe, the sensor to be detected can be rapidly submerged, the bubble generation condition is observed, whether the sensor has cracks or not is judged, and the detection efficiency is improved; and by arranging the liquid return assembly, liquid in the tray flows back to the water tank, recycling of the liquid is achieved, resources are saved, and waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sensor sealing test, and in particular to a sealing and waterproof test device for a micro sensor. Background Art

[0002] Microsensors are small, lightweight, and low-power sensors that are widely used in various fields, including but not limited to medical, industrial automation, environmental monitoring, consumer electronics, etc. With the advancement of technology, the requirements for microsensors in terms of accuracy, stability, and reliability are also increasing. These sensors are usually required to work in various complex environments, so their design and manufacturing must take into account multiple factors, including size, power consumption, durability, and environmental adaptability.

[0003] At present, many micro sensors need to work in humid or underwater environments, such as underwater robots, medical equipment, industrial automation equipment, etc. These application environments require sensors to have good waterproof performance to ensure that they can work normally in these environments; at the same time, the sensors usually contain sensitive electronic components and circuits, which are very sensitive to moisture. The penetration of moisture may cause short circuits, corrosion or other forms of damage, affecting the performance and life of the sensor.

[0004] Therefore, it is urgent to design a testing device to monitor the waterproof sealing of microsensors. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the fact that currently micro sensors need to pass a waterproof test to meet the problem of adapting to working in a humid or underwater environment, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a sealing and waterproof testing device for a micro sensor, comprising a testing component, including a test box with a test cavity and an opening on one side, a tray arranged in the test cavity, and a spray pipe arranged above the tray; wherein the spray pipe is an arc-bent pipe and nozzles are arranged on the inner concave surface, and the nozzles can discharge water radially along the spray pipe, the spray pipe is rotatably arranged in the test cavity, and an adjusting component for controlling the rotation of the spray pipe so that the nozzle can discharge water toward the tray is arranged in the test cavity; the tray is suspended inside the test cavity, a supporting component for supporting the tray is arranged at the bottom of the test cavity, the tray is provided with a through drain, and a liquid return component for recovering the liquid accumulated in the tray is arranged below the tray.

[0008] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, the supporting assembly includes a spring column vertically fixed to the bottom of the test cavity, and a bracket arranged on the top end of the spring column; a gravity sensor for measuring the mass of the tray is arranged on the contact surface between the bracket and the tray.

[0009] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, wherein: a sealing plate is provided at the position of the tray surface corresponding to the water outlet, a guide column is vertically fixedly connected to the top of the sealing plate, a T-shaped block is provided on the inner curved surface of the tray, one end of the T-shaped block extends to the top of the guide column and is provided with a sliding cavity, the sliding cavity is filled with heavy liquid, one end of the guide column away from the sealing plate extends into the sliding cavity and is fixedly connected to the sliding plate, the torsion springs on both sides of the sliding plate are connected to a rotating plate, and an oil leakage hole is provided on the rotating plate.

[0010] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, the liquid return component includes two structurally symmetrical brackets arranged on both sides of the spring column, and a lifting member arranged below the water outlet, one end of the lifting member is connected to the bracket, and the other end of the lifting member can pass through the water outlet and contact the sealing plate.

[0011] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, wherein: a sliding groove parallel to the axial direction of the spring column is provided on the surface of the bracket, a slide is provided in the sliding groove, and an adjustment spring is provided between one side of the slide and the end surface of the sliding groove; a pull rope is provided on the side of the slide away from the adjusting column, and the end of the pull rope away from the slide extends into the tray, and wire holes for stretching and passing are provided on the bracket and the T-shaped block, and the end of the pull rope away from the slide passes through the wire holes on the bracket and the T-shaped block in turn and is connected with a hanging ring, a sphere is provided on one side of the hanging ring, and the sphere can collide with the surface of the tray; an elastic rope is provided on the surface of the tray, and the elastic rope passes through the center hole of the hanging ring.

[0012] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, wherein: a liquid collecting bucket is arranged below the lifting member, the liquid collecting bucket is located directly below the water outlet, the water outlet end of the liquid collecting bucket is connected with the water tank through a water pipe, a support rod is fixedly connected to the inner wall of the liquid collecting bucket, a rotating shaft is movably connected to the middle part of the support rod, and guide plates arranged in a circle are arranged on the top end of the rotating shaft, and the guide plates are all inclined at the same angle.

[0013] As a preferred solution of the sealing and waterproof testing device of the micro sensor of the present invention, the inner wall of the liquid collecting hopper is provided with a spiral drainage groove, and the bottom end of the rotating shaft is provided with a water stirring block.

[0014] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, wherein: the adjustment component includes a first movable shaft and a second movable shaft arranged on the side wall of the test chamber, and a transmission belt connecting the first movable shaft and the second movable shaft; wherein, one end of the first movable shaft is connected to the spray pipe, and the end of the second movable shaft is coaxially sleeved with a driving gear, and one side of the driving gear is meshed with a driving rack.

[0015] As a preferred solution of the sealing and waterproof testing device of the micro sensor described in the present invention, a transparent plate is slidably provided on the opening side of the test box, the driving rack is provided on the driving gear and the transparent plate, and the driving rack is arranged parallel to the transparent plate and a connecting rod is provided between the driving rack and the transparent plate.

[0016] As a preferred solution of the sealing and waterproof testing device of the micro sensor of the present invention, when the transparent plate closes the opening of the test box, it can drive the spray pipe to be vertically arranged just above the tray.

[0017] The beneficial effects of the present invention are as follows: by injecting liquid into the tray through the spray pipe, the sensor to be tested can be quickly submerged, the bubble generation can be observed, and it can be determined whether the sensor has cracks, thereby improving the detection efficiency; and by setting a liquid return component, the liquid inside the tray can be returned to the water tank, thereby realizing the recycling of the liquid, saving resources and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the test box in the present invention.

[0021] Figure 3 It is a schematic diagram of the connection structure between the support assembly and the tray in the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the liquid return component in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the liquid collecting bucket in the present invention.

[0024] Figure 6 It is a schematic cross-sectional structural diagram of the T-shaped block and the sealing plate in the present invention.

[0025] Figure 7 It is a schematic structural diagram of the transparent plate and its connecting parts in the present invention.

[0026] Figure 8 for Figure 2 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1

[0032] Reference Figure 1 and Figure 2, which is the first embodiment of the present invention, provides a sealing and waterproof testing device for a micro sensor, including a testing component 100, for detecting the sealing and waterproof characteristics of the sensor; specifically, the testing component 100 includes a testing box 101 with a testing cavity H and an opening on one side, a tray 102 arranged in the testing cavity H, and a spray pipe 103 arranged above the tray 102.

[0033] Furthermore, the spray pipe 103 is an arc-shaped curved pipe and the inner concave surface is arranged with nozzles 104, the nozzles 104 can discharge water radially along the spray pipe 103, and the water inlet end of the spray pipe 103 is connected to the water tank through a hose.

[0034] Specifically, during the detection, the sensor to be tested is placed inside the tray 102, and the spray control switch is turned on. Liquid is injected into the tray 102 through the spray pipe 103 until the liquid completely submerges the sensor to be tested. It is observed whether bubbles are generated in the liquid around the sensor to be tested inside the tray 102 to determine whether there are cracks in the sensor.

[0035] Example 2

[0036] Reference Figure 2 to Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the tray 102 is suspended inside the test chamber H, a support assembly 300 for supporting the tray 102 is provided at the bottom of the test chamber H, the tray 102 is provided with a through drain port 102a, the water outlet speed of the injection spray pipe 103 is much greater than the water outlet speed of the drain port 102a, to ensure that the liquid level inside the tray 102 rises normally during the test, and a liquid return assembly 400 is provided below the tray 102 for recovering the accumulated liquid inside the tray 102.

[0037] Specifically, the support assembly 300 includes a spring column 301 vertically fixed to the bottom of the test chamber H, and a top bracket 302 arranged on the spring column 301; the tray 102 is placed on the top of the bracket 302, and the spring column 301 plays a role in supporting the tray 102. During the test, the tray 102 will be filled with water, the overall weight will increase, and the spring column 301 will drop under the influence of gravity. As the spray pipe 103 stops injecting water into the tray 102, the accumulated liquid in the tray 102 is gradually discharged from the drain port 102a, the overall gravity decreases, and the spring column 301 rises under the influence of its own elastic force.

[0038] Preferably, a gravity sensor 303 for measuring the mass of the pallet 102 is provided on the contact surface between the bracket 302 and the pallet 102. The gravity sensor 303 can also be used to assist in detecting the sealing of the sensor to be tested. By recording and comparing the weight of the pallet 102 after being filled with water and the overall weight of the pallet 102 after water is poured into the drain port 102a, it is possible to determine whether water is seeping into the sensor, that is, to determine whether there are cracks on the surface of the sensor.

[0039] Furthermore, a sealing plate 105 is provided on the surface of the tray 102 corresponding to the drain port 102a, and a guide column 106 is vertically fixedly connected to the top of the sealing plate 105. A T-shaped block 107 is provided on the inner curved surface of the tray 102. One end of the T-shaped block 107 extends to the top of the guide column 106 and is provided with a sliding cavity 107a. The sliding cavity 107a is filled with heavy liquid. One end of the guide column 106 away from the sealing plate 105 extends into the sliding cavity 107a and is fixedly connected to a sliding plate 108. The torsion springs on both sides of the sliding plate 108 are connected to a rotating plate 109, and an oil leakage hole 109a is provided on the rotating plate 109.

[0040] Furthermore, the liquid return assembly 400 includes two structurally symmetrical brackets 401 arranged on both sides of the spring column 301, and a lifting member 402 arranged below the drain port 102a, one end of the lifting member 402 is connected to the bracket 401, and the other end of the lifting member 402 can pass through the drain port 102a and contact the sealing plate 105.

[0041] Specifically, by providing the sealing plate 105, it is ensured that in the initial stage of water filling, the liquid in the tray 102 will not be discharged from the drain port 102a, thereby preventing the liquid level inside the tray 102 from rising too slowly, resulting in a long test time. As the water filling time increases, the amount of water inside the tray 102 continues to increase, the overall gravity of the tray 102 increases, the spring column 301 continues to shrink and descend, and the sealing plate 105 contacts the lifting member 402. When the water filling time continues to increase, the amount of water inside the tray 102 continues to increase, and the spring column 301 continues to shrink, so that the sealing member is resisted by the sealing plate 105 and separated from the water outlet. The liquid inside the tray 102 begins to be discharged from the drain port 102a, and the falling water flows back to the water tank through the liquid return component 400, so that the liquid can be reused repeatedly.

[0042] At the same time, the guide column 106, the sliding plate 108, and the rotating plate 109 are also resisted by the lifting member 402. As the amount of water inside the tray 102 continues to increase, the sliding plate 108 and the rotating plate 109 move toward the middle of the sliding chamber 107a. The heavy liquid in the sliding chamber 107a located on the upper part of the sliding plate 108 moves from the oil leakage hole 109a to the upper part of the sliding plate 108. Under the influence of the heavy liquid, the rotating plate 109 will be deflected, causing a gap between the rotating plate 109 and the side wall of the sliding chamber 107a, thereby increasing the descending speed of the heavy liquid.

[0043] When the spray pipe 103 stops spraying, the tray 102 is no longer filled with water, and the liquid inside is drained through the drain port 102a and gradually decreases. The overall gravity of the tray 102 decreases, and the spring column 301 will gradually stretch upward. With the help of the high buoyancy of the heavy liquid in the sliding cavity 107a, the sealing plate 105 under the T-block 107 slowly descends, giving the liquid inside the tray 102 sufficient time to drain.

[0044] Furthermore, a sliding groove 401a parallel to the axis of the spring column 301 is provided on the surface of the bracket 401, a slide 403 is provided in the sliding groove 401a, and an adjustment spring 404 is provided between one side of the slide 403 and the end surface of the sliding groove 401a; a pull rope 405 is provided on the side of the slide 403 away from the adjustment column, and the end of the pull rope 405 away from the slide 403 extends into the tray 102, and wire holes 406 for stretching and passing are provided on the bracket 401 and the T-shaped block 107, and the end of the pull rope 405 away from the slide 403 passes through the wire holes 406 on the bracket 401 and the T-shaped block 107 in turn and is connected to a hanging ring 407, and a sphere 408 is provided on one side of the hanging ring 407, and the sphere 408 can collide with the surface of the tray 102; an elastic rope 409 is provided on the surface of the tray 102, and the elastic rope 409 passes through the center hole of the hanging ring 407.

[0045] Specifically, one end of the slide 403 is affected by the tension of the adjusting spring 404 to maintain dynamic stability, and the other end cooperates with the tension of the elastic rope 409 to maintain the dynamic stability of the pull rope 405. In the process of injecting liquid into the tray 102, under the action of gravity, the tray 102 moves downward as a whole, thereby pulling the pull rope 405 to slide in the wire holes 406 of the T-shaped frame and the bracket 401, pulling the elastic rope 409 and making the ball 408 suspended in the air; after the elastic rope 409 is deformed by tension, due to its own elastic recovery characteristics, it further pulls the pull rope 405 to slide back, and the ball 408 hits the tray 102. At the same time, the pull rope 405 slides back and pulls the other end of the slide 403 to slide, squeezing the adjusting spring 404, and the spring recovers after being compressed. This reciprocating process can make the ball 408 frequently hit the inner cavity surface of the tray 102, causing the tray 102 and the liquid in the tray 102 to vibrate, further accelerating the discharge of the liquid inside the tray 102.

[0046] Furthermore, a liquid collecting hopper 410 is provided below the lifting member 402. The liquid collecting hopper 410 is located directly below the drain port 102a. The water outlet end of the liquid collecting hopper 410 is connected to the water tank through a water pipe. The liquid discharged from the drain port 102a will fall vertically into the liquid collecting hopper 410 and flow into the water tank along the water pipe, thereby realizing the recycling of the liquid.

[0047] Furthermore, the inner wall of the liquid collecting hopper 410 is fixedly connected with a support rod 411, the middle part of the support rod 411 is movably connected with a rotating shaft 412, the top of the rotating shaft 412 is provided with guide plates 413 arranged in a circle, and the guide plates 413 are all inclined at the same angle; the inner wall of the liquid collecting hopper 410 is provided with a spiral drainage groove 414, and the bottom end of the rotating shaft 412 is provided with a water stirring block 415.

[0048] Specifically, the liquid collecting bucket 410 has a large upper opening and a small lower opening, which can fully receive the falling liquid split by the jacking member 402 and quickly gather the collected liquid to the small opening. In the process of discharging the liquid in the tray 102 through the drain port 102a, the discharged liquid will first enter the liquid collecting bucket 410 and flow into the water tank along the water pipe from the bottom output end of the liquid collecting bucket 410. In the process of the liquid entering the liquid collecting bucket 410, it will collide with the guide plate 413. The guide plate 413 will rotate around the rotating shaft 412 when hit. At the same time, the liquid flows downward along the guide plate 413 and contacts the conical inner wall of the liquid collecting bucket 410. Further, under the action of the spiral drainage groove 414 on the inner wall of the liquid collecting bucket 410, the liquid continues to flow downward in a spiral manner. At the same time, the rotation of the rotating shaft 412 synchronously drives the bottom water stirring block 415 to rotate, stirring the liquid at the small end of the liquid collecting bucket 410, thereby increasing the speed and strength of the liquid returning to the water tank.

[0049] The remaining structures are the same as those of Example 1.

[0050] Example 3

[0051] Reference Figure 2 , Figure 7 and Figure 8 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the spray pipe 103 is rotatably arranged in the test chamber H, and an adjustment component 200 is arranged in the test chamber H for controlling the rotation of the spray pipe 103 so that the nozzle 104 can discharge water toward the tray 102; specifically, the adjustment component 200 includes a first movable shaft 201 and a second movable shaft 202 arranged on the side wall of the test chamber H, and a transmission belt 203 connecting the first movable shaft 201 and the second movable shaft 202; wherein, one end of the first movable shaft 201 is connected to the spray pipe 103, and the end of the second movable shaft 202 is coaxially sleeved with a driving gear 204, and one side of the driving gear 204 is meshed with a driving rack 205.

[0052] Furthermore, a transparent plate 206 is slidably disposed on the opening side of the test box 101 , a driving rack 205 is disposed between the driving gear 204 and the transparent plate 206 , and the driving rack 205 is arranged parallel to the transparent plate 206 and a connecting rod 207 is disposed between the driving rack 205 and the transparent plate 206 .

[0053] Specifically, when the transparent plate 206 is closed but not closed, the test box 101 is open, and the curved portion of the spray pipe 103 is close to the opening of the test box 101. At this time, the tester can conveniently place the sensor to be tested in the tray 102 without being interfered by the spray pipe 103. When the transparent plate 206 slides upward to close the opening of the test box 101, it simultaneously drives the drive rack 205 upward, and then drives the drive gear 204 meshing with it to rotate. Furthermore, with the transmission action of the first movable shaft 201, the second movable shaft 202 and the transmission belt 203, the spray pipe 103 is rotated to be vertically arranged directly above the tray 102, so that the nozzle 104 can discharge water toward the tray 102.

[0054] The remaining structure is the same as that of Example 2.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sealing and waterproof testing device for a micro sensor, Features: include, A test assembly (100) comprises a test box (101) having a test cavity (H) and an opening on one side, a tray (102) arranged in the test cavity (H), and a spray pipe (103) arranged above the tray (102); The spray pipe (103) is a circular curved pipe and has nozzles (104) arranged on its inner concave surface. The nozzles (104) can discharge water radially along the spray pipe (103). The spray pipe (103) is rotatably arranged in the test chamber (H). An adjustment component (200) is arranged in the test chamber (H) for controlling the rotation of the spray pipe (103) so that the nozzles (104) can discharge water in the direction of the tray (102). The tray (102) is suspended inside the test cavity (H); a support assembly (300) for supporting the tray (102) is provided at the bottom of the test cavity (H); the tray (102) is provided with a through drain port (102a); and a liquid return assembly (400) for recovering liquid accumulated in the tray (102) is provided below the tray (102).

2. The sealing and waterproof testing device of the micro sensor as claimed in claim 1, Features: The support assembly (300) comprises a spring column (301) vertically fixed to the bottom of the test cavity (H), and a bracket (302) arranged on the top end of the spring column (301); a gravity sensor (303) for measuring the mass of the tray (102) is arranged on the contact surface between the bracket (302) and the tray (102).

3. The sealing and waterproof testing device of the micro sensor as claimed in claim 2, Features: A sealing plate (105) is provided on the surface of the tray (102) corresponding to the water outlet (102a), and a guide column (106) is vertically fixedly connected to the top of the sealing plate (105). A T-shaped block (107) is provided on the inner curved surface of the tray (102), and one end of the T-shaped block (107) extends to the top of the guide column (106) and is provided with a sliding cavity (107a). The sliding cavity (107a) is filled with heavy liquid. One end of the guide column (106) away from the sealing plate (105) extends into the sliding cavity (107a) and is fixedly connected to a sliding plate (108). The torsion springs on both sides of the sliding plate (108) are connected to a rotating plate (109), and an oil leakage hole (109a) is provided on the rotating plate (109).

4. The sealing and waterproof testing device of the micro sensor as claimed in claim 3, Features: The liquid return assembly (400) comprises two structurally symmetrical brackets (401) arranged on both sides of the spring column (301), and a lifting member (402) arranged below the drain port (102a), one end of the lifting member (402) being connected to the bracket (401), and the other end of the lifting member (402) being able to penetrate the drain port (102a) and abut against the sealing plate (105).

5. The sealing and waterproof testing device of the micro sensor as claimed in claim 4, Features: The surface of the bracket (401) is provided with a sliding groove (401a) parallel to the axial direction of the spring column (301), a sliding rack (403) is provided in the sliding groove (401a), and an adjusting spring (404) is provided between one side of the sliding rack (403) and the end surface of the sliding groove (401a); A pull rope (405) is provided on the side of the slide (403) away from the adjustment column, and one end of the pull rope (405) away from the slide (403) extends into the tray (102), and wire holes (406) for stretching and passing are provided on the bracket (401) and the T-shaped block (107), and one end of the pull rope (405) away from the slide (403) passes through the wire holes (406) on the bracket (401) and the T-shaped block (107) in sequence and is connected to a hanging ring (407), and a sphere (408) is provided on one side of the hanging ring (407), and the sphere (408) can collide with the surface of the tray (102); An elastic rope (409) is arranged on the surface of the tray (102), and the elastic rope (409) passes through the central hole of the hanging ring (407).

6. The sealing and waterproof testing device of the micro sensor as claimed in claim 5, Features: A liquid collecting hopper (410) is arranged below the lifting member (402). The liquid collecting hopper (410) is located directly below the water outlet (102a). The water outlet end of the liquid collecting hopper (410) is connected to the water tank through a water pipe. A support rod (411) is fixedly connected to the inner wall of the liquid collecting hopper (410). A rotating shaft (412) is movably connected to the middle of the support rod (411). Guide plates (413) arranged in a circle are arranged at the top end of the rotating shaft (412), and the guide plates (413) are all inclined at the same angle.

7. The sealing and waterproof testing device of the micro sensor as claimed in claim 6, Features: The inner wall of the liquid collecting hopper (410) is provided with a spiral drainage groove (414), and the bottom end of the rotating shaft (412) is provided with a water stirring block (415).

8. The sealing and waterproof testing device of a micro sensor according to any one of claims 1 to 7, Features: The adjustment assembly (200) comprises a first movable shaft (201) and a second movable shaft (202) arranged on the side wall of the test chamber (H), and a transmission belt (203) connecting the first movable shaft (201) and the second movable shaft (202); One end of the first movable shaft (201) is connected to the spray pipe (103), the end of the second movable shaft (202) is coaxially sleeved with a driving gear (204), and one side of the driving gear (204) is meshed with a driving rack (205).

9. The sealing and waterproof testing device of the micro sensor as claimed in claim 8, Features: A transparent plate (206) is slidably disposed on the opening side of the test box (101), the driving rack (205) is disposed on the driving gear (204) and the transparent plate (206), and the driving rack (205) is arranged in parallel with the transparent plate (206) and a connecting rod (207) is disposed between the driving rack (205) and the transparent plate (206).

10. The sealing and waterproof testing device of the micro sensor as claimed in claim 9, Features: When the transparent plate (206) closes the opening of the test box (101), it can drive the spray pipe (103) to be vertically arranged directly above the tray (102).

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