Portable electronic product waterproof test negative pressure cabin

Abstract

The utility model discloses a portable electronic product waterproof test negative pressure cabin, which comprises a test machine, and the test machine comprises a cabin body and a machine base. According to the application, the lifting cylinder pulls the cover plate to be tightly attached to the top of the cabin body, the placing plate and the to-be-tested product are completely immersed in the water body, at the moment, the first group of positioning cylinders pulls the flexible seats at the output ends of the positioning cylinders to be separated, the flexible seats on the second group of positioning cylinders are kept to be combined with the to-be-tested product, and whether bubbles exist on the outer side of the to-be-tested product or not is observed; after a specified time interval, the first group of positioning cylinders drive the flexible seats at the output ends of the positioning cylinders to be recombined with the to-be-tested product, the second group of positioning cylinders drive the flexible seats on the positioning cylinders to be separated, bubbles are observed, and the two groups of flexible seats are alternately switched, so that the stability of the position of the to-be-tested product is ensured, and the detection accuracy is improved. The waterproof test result of the product is prevented from being affected by shielding of the positioning piece, and the whole negative pressure cabin is compact in structure and convenient for operators to carry and transfer.

Description

Technical Field

[0001] This utility model relates to the field of waterproof testing technology, and in particular to a negative pressure chamber for waterproof testing of portable electronic products. Background Technology

[0002] The electronic product negative pressure waterproof tester is a device used to test the waterproof performance of electronic products. It can create a low-pressure environment in a sealed cavity, and then put the electronic product to be tested into it. During the test, a certain amount of water may be injected into the cavity or the product may be directly immersed in water. Afterwards, the presence of bubbles or other forms of gas flow is observed to determine whether the product leaks.

[0003] Chinese Patent Publication No. CN213658178U, published on 20210709, discloses a waterproof testing machine for products, including a manual valve, a buckle, a reinforcing column, and an air pipe. The manual valve is installed at the top right end of the base. The buckle is set on the side surface of the upper cover, and a pull rod is hinged to the outer rear end of the buckle. The upper cover is hinged to the top front end of the transparent cylinder, and a handle is welded to the middle of the top surface of the upper cover. The transparent cylinder is fastened to the middle of the top surface of the base, and a tray extends movably into the inner side of the transparent cylinder. The reinforcing column is fastened to the side surface of the transparent cylinder. The tray is fastened to the piston rod at the top of the lifting cylinder. From left to right, a test water pressure regulating valve, a timer, a pressure gauge, a timer switch, a tray lifting switch, and an alarm are installed on the rear end face of the base, and a bracket is welded to the bottom end face of the base.

[0004] Existing portable waterproof testing negative pressure chambers for electronic products, as mentioned above, typically involve placing the electronic product on a placement plate, closing the cover, and then using a lifting cylinder to submerge the placement plate in water. In practice, considering the influence of buoyancy, straps are often used to secure the electronic product to the placement plate. However, these straps can easily obstruct the outer part of the product, thus affecting the test results. Therefore, there is an urgent need to develop a corresponding portable waterproof testing negative pressure chamber for electronic products to solve these problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a portable negative pressure chamber for waterproof testing of electronic products in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable negative pressure test chamber for waterproof testing of electronic products includes a testing machine. The testing machine includes a chamber body and a base. A lifting cylinder is fixedly connected to the top of the base. A cover plate is fixedly connected to the output end of the lifting cylinder. A placement plate is fixedly connected to the bottom of the cover plate. Two sets of positioning cylinders are fixedly connected to the top of the cover plate, and the output ends of the two sets of positioning cylinders are integrated with flexible seats.

[0008] Preferably, the cover plate and the placement plate are respectively fixedly connected to a bottom strip and a sleeve rod on their opposite sides. The sleeve rod is sleeved on the outside of the bottom strip, and the outside of the sleeve rod is integrated with a fixing part for fixing the bottom strip and the sleeve rod.

[0009] Preferably, the fixing part includes a positioning rod that is screwed into the outer wall of the sleeve rod, and the open end of the positioning rod abuts against the outer wall of the bottom strip.

[0010] Preferably, a protruding ring is fixedly connected to the bottom of the cover plate, and the outer wall of the protruding ring is engaged with the top of the cabin through a slot, and a sealing ring is placed inside the slot.

[0011] Preferably, the bottom strip and the sleeve rod are both fixedly connected to the outer pieces on their opposite sides, and the two sets of outer pieces are respectively fixedly connected to the cover plate and the top of the placement plate by two sets of locking rods.

[0012] Preferably, the flexible seat includes a connecting seat fixedly connected to the output end of the positioning cylinder, and multiple sets of protruding rods are inserted into the bottom of the connecting seat, and the tops of the multiple sets of protruding rods are fixedly connected to the inner wall of the connecting seat with springs.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this application, the testing machine is selected in negative pressure mode. The product to be tested is placed on the placement plate. In the initial stage, two sets of positioning cylinders push two sets of flexible seats to abut against the top of the product to be tested. Then, the lifting cylinder pulls the cover plate to make it fit tightly against the top of the chamber. The placement plate and the product to be tested are completely immersed in the water. At this time, the first set of positioning cylinders pulls the flexible seat at its output end to separate. The flexible seat on the second set of positioning cylinders remains attached to the product to be tested. It is observed whether there are air bubbles on the outside of the product to be tested. After a specified interval, the first set of positioning cylinders drives the flexible seat at its output end to reattach to the product to be tested. The second set of positioning cylinders then drives the flexible seat on it to separate. Air bubbles are observed. By alternately switching the positions of the two sets of flexible seats, the position of the product to be tested is kept stable, and the results of the waterproof test are avoided due to the obstruction of the positioning parts. Moreover, the overall negative pressure chamber structure is compact and easy for operators to carry and transfer.

[0015] 2. In this application, the placement plate is vertically lifted, and the bottom strip and the sleeve rod slide together until the placement plate is raised to a suitable height. Then, the positioning rod is rotated to screw it onto the outer wall of the sleeve rod. The bottom strip and the sleeve rod are fixed by the contact friction between the positioning rod and the bottom strip, so that the height of the placement plate can be easily adjusted according to the usage requirements, thereby improving the convenience of using the negative pressure chamber for waterproof testing of electronic products. Attached Figure Description

[0016] Figure 1A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0017] Figure 2 A schematic diagram of the placement plate structure provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of the connector structure according to an embodiment of the present utility model is shown;

[0019] Figure 4 A schematic diagram of a convex ring structure according to an embodiment of the present invention is shown.

[0020] Legend:

[0021] 1. Testing machine; 101. Chamber; 102. Base; 2. Lifting cylinder; 3. Cover plate; 4. Positioning cylinder; 5. Placement plate; 6. Convex ring; 7. Bottom strip; 8. Sleeve rod; 9. Positioning rod; 10. Outer piece; 11. Connecting seat; 12. Convex rod; 13. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A portable electronic product waterproof testing negative pressure chamber includes a testing machine 1. The testing machine 1 includes a chamber body 101 and a base 102. A lifting cylinder 2 is fixedly connected to the top of the base 102. A cover plate 3 is fixedly connected to the output end of the lifting cylinder 2. A placement plate 5 is fixedly connected to the bottom of the cover plate 3. Two sets of positioning cylinders 4 are fixedly connected to the top of the cover plate 3, and the output ends of the two sets of positioning cylinders 4 are all integrated with flexible seats.

[0025] Select the negative pressure mode on the testing machine 1, place the product to be tested on the placement plate 5. In the initial stage, the two sets of positioning cylinders 4 push the two sets of flexible seats to abut against the top of the product to be tested. Then, the lifting cylinder 2 pulls the cover plate 3 to make it fit tightly against the top of the chamber 101. The placement plate 5 and the product to be tested are completely immersed in the water. At this time, the first set of positioning cylinders 4 pulls the flexible seat at its output end to separate. The flexible seat on the second set of positioning cylinders 4 remains connected to the product to be tested. Observe whether there are air bubbles on the outside of the product to be tested. After a specified interval, the first set of positioning cylinders 4 drives the flexible seat at its output end to reconnect with the product to be tested. The second set of positioning cylinders 4 then drives the flexible seat on it to separate. Observe the air bubbles. By alternately switching the positions of the two sets of flexible seats, the position of the product to be tested is kept stable, and the results of the waterproof test are not affected by the obstruction of the positioning parts. Moreover, the overall negative pressure chamber structure is compact and easy for operators to carry and transfer.

[0026] Specifically, such as Figure 2 and Figure 4 As shown, a bottom strip 7 and a sleeve rod 8 are fixedly connected to the opposite surfaces of the cover plate 3 and the placement plate 5, respectively. The sleeve rod 8 is sleeved on the outside of the bottom strip 7, and a fixing part for fixing the bottom strip 7 and the sleeve rod 8 is integrated on the outside of the sleeve rod 8. The fixing part includes a positioning rod 9 that is screwed into the outer wall of the sleeve rod 8, and the open end of the positioning rod 9 abuts against the outer wall of the bottom strip 7. When the placement plate 5 is vertically pulled up, the bottom strip 7 and the sleeve rod 8 slide together until the placement plate 5 is raised or lowered to a suitable height. Then, the positioning rod 9 is rotated to screw into the outer wall of the sleeve rod 8. The bottom strip 7 and the sleeve rod 8 are fixed by the contact friction between the positioning rod 9 and the bottom strip 7, so that the height of the placement plate 5 can be conveniently adjusted according to the usage requirements, thereby improving the convenience of using the negative pressure chamber for waterproof testing of electronic products.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, a protruding ring 6 is fixedly connected to the bottom of the cover plate 3, and the outer wall of the protruding ring 6 is engaged with the top of the cabin 101 through a slot 13. A sealing ring is placed inside the slot 13 to ensure the airtightness of the connection between the cover plate 3 and the cabin 101. The bottom strip 7 and the sleeve rod 8 are both fixedly connected to the back of the outer piece 10. The two sets of outer pieces 10 are fixedly connected to the top of the cover plate 3 and the placement plate 5 through two sets of locking rods, so as to ensure the ease of independent disassembly and assembly of the placement plate 5. The flexible seat includes a connecting seat 11 fixedly connected to the output end of the positioning cylinder 4. Multiple sets of protruding rods 12 are inserted into the bottom of the connecting seat 11, and the top of each set of protruding rods 12 is fixedly connected to the inner wall of the connecting seat 11 with a spring. The multiple sets of protruding rods 12 can be independently extended and retracted. The multiple sets of protruding rods 12 can conform to the external contour of the electronic product to ensure the stability of the electronic product positioning.

[0028] Working principle: The testing machine 1 is set to negative pressure mode. The product to be tested is placed on the placement plate 5. Initially, two sets of positioning cylinders 4 push both sets of flexible seats to abut the top of the product. Then, the lifting cylinder 2 pulls the cover plate 3 to make it tightly fit against the top of the chamber 101. The placement plate 5 and the product to be tested are then completely immersed in the water. At this time, the first set of positioning cylinders 4 pulls the flexible seat at its output end to separate, while the flexible seat on the second set of positioning cylinders 4 remains attached to the product. Observe whether there are air bubbles on the outside of the product. After a specified interval, the first set of positioning cylinders 4 drives the flexible seat at its output end to reattach to the product, and the second set of positioning cylinders 4 drives the flexible seat on its... The seats are separated, and bubbles are observed. By alternating the positions of two sets of flexible seats, the position of the product under test is kept stable, and the results of the waterproof test are not affected by the obstruction of the positioning components. The overall negative pressure chamber has a compact structure, which is easy for operators to carry and transfer. The placement plate 5 is lifted vertically, and the bottom strip 7 and the sleeve rod 8 slide together until the placement plate 5 is raised or lowered to a suitable height. Then, the positioning rod 9 is rotated to screw into the outer wall of the sleeve rod 8. The bottom strip 7 and the sleeve rod 8 are fixed by the contact friction between the positioning rod 9 and the bottom strip 7. The height of the placement plate 5 can be easily adjusted according to the usage requirements, thereby improving the convenience of using the negative pressure chamber for waterproof testing of electronic products.

[0029] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable negative pressure chamber for waterproof test of electronic products, comprising a testing machine (1), wherein the testing machine (1) comprises a chamber body (101) and a base (102), characterized in that, The base (102) top fixedly connected with lifting cylinder (2), the lifting cylinder (2) output end fixedly connected with cover plate (3), the cover plate (3) bottom fixedly connected with the placement plate (5), the cover plate (3) top fixedly connected with two groups of positioning cylinder (4), and two groups the positioning cylinder (4) output end is integrated with flexible seat.

2. The portable electronic product waterproof test negative pressure chamber according to claim 1, characterized in that, The cover plate (3) and placement plate (5) opposite face are fixedly connected with bottom strip (7) and sleeve rod (8) respectively, the sleeve rod (8) is sleeved on the outside of bottom strip (7), and the outside of sleeve rod (8) is integrated with the fixed part for the fixed connection of bottom strip (7) and sleeve rod (8).

3. The portable electronic product waterproof test negative pressure chamber according to claim 2, characterized in that, The fixed part includes the positioning rod (9) that is screwed with the outer wall of sleeve rod (8), and the open end of positioning rod (9) is butted on the outer wall of bottom strip (7).

4. The portable electronic product waterproof test negative pressure chamber according to claim 3, characterized in that, The cover plate (3) bottom fixedly connected with convex ring (6), and the outer wall of convex ring (6) is clamped with the top of cabin (101) through the clamping groove (13), the sealing ring is placed in the inside of clamping groove (13).

5. The portable electronic product waterproof test negative pressure chamber according to claim 4, characterized in that, The bottom strip (7) and sleeve rod (8) opposite face are fixedly connected with outer sheet (10) respectively, two groups the outer sheet (10) are fixedly connected through two groups of locking rods and cover plate (3) and placement plate (5) top respectively.

6. The portable electronic product waterproof test negative pressure chamber according to claim 5, characterized in that, The flexible seat includes the connecting seat (11) that is fixedly connected with the output end of positioning cylinder (4), the connecting seat (11) bottom is inserted with multiple groups of convex rod (12), and multiple groups the convex rod (12) top is fixedly connected with spring with the inner wall of connecting seat (11).

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