Waterproof sealing shell of instrument

Abstract

The utility model relates to the technical field of instrument shells, and discloses an instrument waterproof sealing shell which comprises a lower instrument shell, the top of the front end of the lower instrument shell is rotatably connected with an upper instrument shell, the front end of the upper instrument shell is provided with an observation window, and the bottom side of the front end of the upper instrument shell is fixedly connected with a fixing block. The inner wall of the fixing block is in threaded connection with a fixing screw, the top of the front end of the lower instrument shell is fixedly connected with a connecting block corresponding to the bottom end of the fixing block, the bottom end of the lower instrument shell is fixedly connected with an air pressure bin, and the inner wall of the air pressure bin is connected with a hollow rubber ring through an air conveying assembly. The top of the rear end of the inner wall of the lower instrument shell is slidably connected with a first moving plate. According to the utility model, water vapor, liquid or humid air can be effectively prevented from entering the instrument, so that the corrosion and damage of parts are reduced, maintenance personnel can quickly enter the instrument to carry out maintenance and replacement work, the maintenance time can be saved, and the maintenance efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument housings, in particular to a waterproof and sealed instrument housing. Background Art

[0002] Instrument waterproof sealed housing is usually used to protect instruments from water or other liquids to ensure their normal operation and extend their service life. This housing is usually made of corrosion-resistant materials such as plastic, metal or rubber. It is widely used in instruments, meters, electronics, communications, automation, sensors, smart cards, industrial control, precision machinery and other industries. It is an ideal box for high-end instruments.

[0003] After searching, an instrument case with good waterproof performance with announcement number CN219372828U includes a lower instrument case, an upper instrument case and an observation window, the upper instrument case is fixedly connected to the top of the lower instrument case by bolts, the observation window is opened through the middle position of the front side of the top of the upper instrument case, positioning tubes are fixedly connected to the four corners of the inner bottom of the lower instrument case, and connecting plates are fixedly connected to the front, back, left and right sides of the upper instrument case. When the upper instrument case and the lower instrument case are closed and installed, the instrument case with good waterproof performance is squeezed by squeezing the squeezing plate to shrink the squeezing spring so that the sealing rubber pad is located inside the installation groove, and the reaction force of the squeezing spring is used to squeeze the sealing rubber ring on the squeezing plate so that the sealing rubber ring is tightly fitted to the outside of the installation groove, effectively preventing water seepage at the connection between the upper instrument case and the lower instrument case, improving the waterproof performance of the instrument case, and avoiding damage to internal components.

[0004] Based on the above patent, the threaded rod is rotated by turning the knob, and the threaded rod and the threaded tube are connected by threads, so that the threaded rod rotates and moves, driving the extrusion ring to move, squeezing the expansion rubber ring, causing it to deform and expand, so that the expansion rubber ring is tightly fitted to the outside of the connecting line, and the threading hole is closed to prevent water vapor from entering through the threading hole, thereby further improving the waterproof effect. However, the expansion coefficient generated by the device when squeezing the rubber ring is small, and cannot meet the requirement of tightly fitting the expansion rubber ring to the outside of the connecting line, resulting in a deterioration in the waterproof effect of the device. The deterioration of the waterproof effect will cause water or moisture to enter the inside of the instrument, which may cause the instrument to short-circuit, damage the circuit board or sensor and other components, and cause the instrument to fail to work properly. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a waterproof and sealed instrument housing, which can effectively prevent water vapor, liquid or humid air from entering the interior of the instrument, thereby reducing corrosion and damage to parts and components, allowing maintenance personnel to quickly enter the interior of the instrument for maintenance and replacement work, which can save maintenance time and improve maintenance efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A waterproof and sealed instrument housing comprises a lower instrument housing, wherein the top front end of the lower instrument housing is rotatably connected to an upper instrument housing, an observation window is provided at the front end of the upper instrument housing, a fixing block is fixedly connected to the bottom side of the front end of the upper instrument housing, a fixing screw is threadedly connected to the inner wall of the fixing block, a connecting block is fixedly connected to the bottom end of the fixing block corresponding to the top front end of the lower instrument housing, an air pressure chamber is fixedly connected to the bottom end of the lower instrument housing, a hollow rubber ring is connected to the inner wall of the air pressure chamber through an air transmission component, a first movable plate is slidably connected to the top rear end of the inner wall of the lower instrument housing, and the first movable plate is connected to the instrument body through a clamping component.

[0008] Furthermore, the gas delivery assembly includes a piston rod slidably connected to the right end of the air pressure chamber, a piston plate is fixedly connected to the left end of the piston rod, an air flow plate is fixedly connected to the inner wall of the air pressure chamber, a connecting pipe is fixedly connected to the inner wall of the hollow rubber ring, a one-way plug is slidably connected to the inner wall of the connecting pipe via a return spring, exhaust holes are provided on four sides of the outer wall of the one-way plug, an air chamber is provided on the inner wall of the one-way plug, and an air vent is provided at the bottom end of the inner wall of the air pressure chamber.

[0009] Furthermore, the clamping assembly includes a one-way screw rotatably connected to the left side of the rear end of the inner wall of the lower instrument housing, the outer wall of the one-way screw is threadedly connected to the second movable plate, the right ends of the first movable plate and the second movable plate are rotatably connected to a two-way screw, and the left and right ends of the two-way screw are threadedly connected to clamping blocks.

[0010] Furthermore, the outer wall of the fixing screw is detachably connected to the inner wall of the connecting block, and the left end of the first movable plate is threadedly connected to the outer wall of the one-way screw.

[0011] Furthermore, the top end of the return spring is fixedly connected to the top end of the inner wall of the connecting tube, and the bottom end of the connecting tube is fixedly connected to the top end of the one-way plug.

[0012] Furthermore, the outer wall of the piston plate is slidably connected to and tightly attached to the inner wall of the air pressure chamber.

[0013] Furthermore, the rear end of the second movable plate is slidably connected to the rear end of the inner wall of the lower instrument housing.

[0014] Furthermore, the rear end of the clamping block is slidably connected to the rear ends of the inner walls of the first movable plate and the second movable plate respectively.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by using the hollow rubber ring, piston rod, piston plate, air flow plate, connecting pipe, one-way plug, reset spring, air chamber, exhaust hole and air vent in combination, water vapor, liquid or humid air can be effectively prevented from entering the interior of the instrument, thereby reducing corrosion and damage to parts, extending the service life of the instrument, reducing the potential safety hazards such as short circuit and fire caused by liquid intrusion, and improving safety during use.

[0017] 2. In the utility model, by using the first movable plate, the one-way screw, the two-way screw, the clamping block and the second movable plate in combination, maintenance personnel can quickly enter the interior of the instrument for maintenance and replacement work, which can save maintenance time, improve maintenance efficiency, and make it easier and safer for maintenance personnel to replace, adjust and repair the instrument body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a waterproof and sealed casing of an instrument proposed by the utility model;

[0019] Figure 2 A half-section diagram of an air pressure chamber of a waterproof and sealed shell of an instrument proposed in the utility model;

[0020] Figure 3 A half-section diagram of a hollow rubber ring of a waterproof sealing shell of an instrument proposed by the utility model;

[0021] Figure 4 A half-section diagram of a connecting pipe of a waterproof and sealed shell of an instrument proposed by the utility model;

[0022] Figure 5 A half-section diagram of a one-way plug of a waterproof sealing shell of an instrument proposed by the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of a second movable plate of a waterproof and sealed shell of an instrument proposed by the utility model;

[0024] Figure 7 This is a half-section view of a first movable plate of a waterproof and sealed shell of an instrument proposed by the utility model.

[0025] Legend:

[0026] 1. Lower instrument case; 2. Upper instrument case; 3. Observation window; 4. Fixing block; 5. Fixing screw; 6. Connecting block; 7. Air pressure chamber; 8. Hollow rubber ring; 9. First movable plate; 10. Instrument body; 11. Piston rod; 12. Piston plate; 13. Air flow plate; 14. Connecting pipe; 15. One-way plug; 16. Reset spring; 17. One-way screw; 18. Two-way screw; 19. Clamping block; 20. Second movable plate; 21. Air chamber; 22. Exhaust hole; 23. Air vent. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-7 , the utility model provides an embodiment: a waterproof and sealed shell of an instrument, including a lower instrument shell 1, the top of the front end of the lower instrument shell 1 is rotatably connected to an upper instrument shell 2, the front end of the upper instrument shell 2 is provided with an observation window 3, the bottom side of the front end of the upper instrument shell 2 is fixedly connected to a fixing block 4, the inner wall of the fixing block 4 is threadedly connected to a fixing screw 5, the top of the front end of the lower instrument shell 1 is fixedly connected to a connecting block 6 corresponding to the bottom end of the fixing block 4, the bottom end of the lower instrument shell 1 is fixedly connected to an air pressure chamber 7, the inner wall of the air pressure chamber 7 is connected to a hollow rubber ring 8 through a gas transmission component, the top of the rear end of the inner wall of the lower instrument shell 1 is slidably connected to a first movable plate 9, the first movable plate 9 is connected to an instrument body 10 through a clamping component, the outer wall of the fixing screw 5 is detachably connected to the inner wall of the connecting block 6, the left end of the first movable plate 9 is threadedly connected to the outer wall of the one-way screw 17, after the instrument body 10 is installed in the lower instrument shell 1, the upper instrument shell 2 is fitted in front of the lower instrument shell 1, and the fixing block 4 is rotated to fix the screw 5 at the connecting block 6 to maintain the fixing effect.

[0029] The right end of the air pressure chamber 7 is slidably connected with a piston rod 11, the left end of the piston rod 11 is fixedly connected with a piston plate 12, the inner wall of the air pressure chamber 7 is fixedly connected with an air flow plate 13, the inner wall of the hollow rubber ring 8 is fixedly connected with a connecting pipe 14, the inner wall of the connecting pipe 14 is slidably connected with a one-way plug 15 through a reset spring 16, exhaust holes 22 are provided on all four sides of the outer wall of the one-way plug 15, an air chamber 21 is provided on the inner wall of the one-way plug 15, and an air vent 23 is provided on the bottom end of the inner wall of the air pressure chamber 7, the top end of the reset spring 16 is fixedly connected to the top end of the inner wall of the connecting pipe 14, the bottom end of the connecting pipe 14 is fixedly connected to the top end of the one-way plug 15, the outer wall of the piston plate 12 is slidably connected to the inner wall of the air pressure chamber 7 and is tightly attached, pulling the piston rod 11 at the air pressure chamber 7, The piston rod 11 drives the piston plate 12, and the air entering the air pressure chamber 7 from the exhaust hole 22 passes through the air flow plate 13 and is input into the connecting pipe 14, so that the air squeezes the one-way plug 15, so that the air is input into the air chamber 21 and input into the hollow rubber ring 8 through the exhaust hole 22, so that the hollow rubber ring 8 expands and fits the hollow rubber ring 8 with the upper instrument shell 2, thereby improving the waterproof effect between the lower instrument shell 1 and the upper instrument shell 2, and can effectively prevent water vapor, liquid or humid air from entering the interior of the instrument, thereby reducing corrosion and damage of components, extending the service life of the instrument, reducing safety hazards such as short circuit and fire caused by liquid intrusion, and improving safety during use.

[0030] The left side of the rear end of the inner wall of the lower instrument housing 1 is rotatably connected with a one-way screw 17, and the outer wall of the one-way screw 17 is threadedly connected with a second movable plate 20, and the right ends of the first movable plate 9 and the second movable plate 20 are both rotatably connected with a bidirectional screw 18, and the left and right ends of the bidirectional screw 18 are threadedly connected with a clamping block 19, and the rear end of the second movable plate 20 is slidably connected to the rear end of the inner wall of the lower instrument housing 1, and the rear ends of the clamping block 19 are respectively slidably connected to the rear ends of the inner walls of the first movable plate 9 and the second movable plate 20, and the first movable plate 9 can be adjusted by rotating the one-way screw 17 according to the length of the instrument body 10 The distance between the first movable plate 9 and the second movable plate 20 allows the first movable plate 9 and the second movable plate 20 to fit the length of the instrument body 10, and the rotation of the bidirectional screw 18 can shrink the clamping block 19 to clamp the width of the instrument body 10, thereby ensuring the fixing effect of the instrument body 10, and when the one-way screw 17 and the bidirectional screw 18 are rotated in the opposite direction, the instrument body 10 can be dropped from the first movable plate 9 and the second movable plate 20, which is convenient for disassembling the instrument body 10 for maintenance, so that maintenance personnel can quickly enter the instrument for maintenance and replacement. This can save maintenance time, improve maintenance efficiency, and make it easier and safer for maintenance personnel to replace, adjust and repair the instrument body 10.

[0031] Working principle: After installing the instrument body 10 in the lower instrument case 1, fit the upper instrument case 2 in front of the lower instrument case 1, and turn the fixing screw 5 at the fixing block 4 at the connecting block 6 to keep it fixed, then pull the piston rod 11 at the air pressure chamber 7, so that the piston rod 11 drives the piston plate 12, and the air entering the air pressure chamber 7 from the exhaust hole 22 passes through the air flow plate 13 and is input into the connecting pipe 14, so that the air squeezes the one-way plug 15, so that the air is input into the air chamber 21 and input into the hollow rubber ring 8 through the exhaust hole 22, so that the hollow rubber ring 8 expands, and the hollow rubber ring 8 fits with the upper instrument case 2, thereby improving the waterproof effect between the lower instrument case 1 and the upper instrument case 2, and can effectively prevent water vapor, liquid or humid air from entering the inside of the instrument, thereby reducing corrosion and damage of parts. The instrument body 10 is provided with a plurality of movable plates 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 111, 112, 113, 114, 115, 116, 117, 118, 119, 110, 111, 112, 113, 114, 115, 116,

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof sealed instrument housing, comprising a lower instrument housing (1), Features: The top of the front end of the lower instrument case (1) is rotatably connected to the upper instrument case (2), the front end of the upper instrument case (2) is provided with an observation window (3), the bottom side of the front end of the upper instrument case (2) is fixedly connected to a fixing block (4), the inner wall of the fixing block (4) is threadedly connected to a fixing screw (5), the top of the front end of the lower instrument case (1) is fixedly connected to a connecting block (6) corresponding to the bottom end of the fixing block (4), the bottom end of the lower instrument case (1) is fixedly connected to an air pressure chamber (7), the inner wall of the air pressure chamber (7) is connected to a hollow rubber ring (8) through a gas transmission component, the top of the rear end of the inner wall of the lower instrument case (1) is slidably connected to a first movable plate (9), and the first movable plate (9) is connected to an instrument body (10) through a clamping component.

2. The waterproof sealed housing of an instrument according to claim 1, Features: The gas delivery assembly comprises a piston rod (11) slidably connected to the right end of the air pressure chamber (7), the left end of the piston rod (11) is fixedly connected to a piston plate (12), the inner wall of the air pressure chamber (7) is fixedly connected to an air flow plate (13), the inner wall of the hollow rubber ring (8) is fixedly connected to a connecting pipe (14), the inner wall of the connecting pipe (14) is slidably connected to a one-way plug (15) via a return spring (16), the outer wall of the one-way plug (15) is provided with exhaust holes (22) on four sides, the inner wall of the one-way plug (15) is provided with an air chamber (21), and the bottom end of the inner wall of the air pressure chamber (7) is provided with an air vent (23).

3. The waterproof sealed housing of an instrument according to claim 1, Features: The clamping assembly comprises a one-way screw (17) rotatably connected to the left side of the rear end of the inner wall of the lower instrument housing (1); the outer wall of the one-way screw (17) is threadedly connected to a second movable plate (20); the right ends of the first movable plate (9) and the second movable plate (20) are both rotatably connected to a two-way screw (18); and the left and right ends of the two-way screw (18) are both threadedly connected to a clamping block (19).

4. The waterproof sealed housing of an instrument according to claim 1, Features: The outer wall of the fixing screw (5) is detachably connected to the inner wall of the connecting block (6), and the left end of the first movable plate (9) is threadedly connected to the outer wall of the one-way screw rod (17).

5. The waterproof sealed housing of an instrument according to claim 2, Features: The top end of the return spring (16) is fixedly connected to the top end of the inner wall of the connecting tube (14), and the bottom end of the connecting tube (14) is fixedly connected to the top end of the one-way plug (15).

6. The waterproof sealed housing of an instrument according to claim 2, Features: The outer wall of the piston plate (12) is slidably connected to the inner wall of the air pressure chamber (7) and is in close contact with it.

7. The waterproof sealed housing for an instrument according to claim 3, Features: The rear end of the second movable plate (20) is slidably connected to the rear end of the inner wall of the lower instrument housing (1).

8. The waterproof sealed housing for an instrument according to claim 3, Features: The rear ends of the clamping blocks (19) are slidably connected to the rear ends of the inner walls of the first movable plate (9) and the second movable plate (20), respectively.

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