Waterproof insulation resistance tester

Abstract

The utility model relates to the technical field of insulation resistance testers, and discloses a waterproof insulation resistance tester. Comprising an upper box body and a lower box body, the lower box body rotates at one end of the upper box body, and a tester body is arranged on the inner wall of the lower box body; according to the utility model, the sealing effect at the interface can be conveniently improved by arranging the rubber ring, so that water is prevented from entering the tester, and the sealing effect of the box body can be conveniently improved by arranging the rubber groove in cooperation with the second fixing ring, so that the water is prevented from entering the box body when people go out for operation in rainy days, and the tester is convenient to use. And through the arrangement of a fixing pipe, the detection line can be conveniently guided to prevent the root from being bent due to pulling, and through the cooperative use of a pull rod and a first spring, the redundant detection line can be conveniently arranged, so that physical damages such as pulling due to the disorder of the line when the detection line is taken out are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of insulation resistance tester, concretely to a waterproof insulation resistance tester. BACKGROUND

[0002] The insulation resistance tester is a kind of instrument specially used for measuring the insulation resistance of electrical equipment, and its measurement result is an important basis for evaluating the insulation performance of electrical equipment. By using the insulation resistance tester to detect the insulation resistance of electrical equipment regularly, potential insulation defects, such as insulation aging and damage, can be found in time. This helps to prevent equipment failure and ensure the normal operation of the equipment, thereby avoiding power outage, fire and other safety accidents that may be caused by equipment failure.

[0003] The insulation resistance tester plays an irreplaceable role in electrical safety detection. It is a key tool to ensure the safe operation of electrical equipment and an important auxiliary means for preventive maintenance, fault troubleshooting, electrical installation and acceptance. Some testers do not take good waterproof measures during use, which may cause water to enter the interior of the insulation resistance tester through the line interface, possibly causing the circuit board, electronic components, etc. to be damp, and thus causing short circuit, corrosion or performance degradation. Water will increase the conductivity of electrical equipment, resulting in a decrease in insulation resistance value. In addition, the detection lines of the tester are usually placed randomly in the box, and the random placement method is easy to cause the cable to be squeezed, pulled and physically damaged, resulting in cable wear, breakage and other problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a waterproof insulation resistance tester to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a waterproof insulation resistance tester, comprising an upper box, further comprising:

[0006] A lower box is rotatably connected to one side of the upper box by a hinge, and the inner wall of the lower box is provided with a tester body;

[0007] A rubber groove is formed in the inner wall of the lower box, and the inner wall of the upper box is fixed with a first fixing ring;

[0008] A second fixing ring is fixed to the inner wall of the tester body, and the inner wall of the second fixing ring is provided with a rubber ring, a fixed pipe is communicated with the inner wall of the rubber ring, and a detection line is arranged in the inner wall of the fixed pipe and electrically connected between the electrical input end of the detection line and the electrical output end of the tester body;

[0009] A fixing plate is installed inside the lower housing. A pull rod slides on the inner wall of the fixing plate. A first spring is installed on the outer side of the pull rod. A baffle is fixedly connected to the bottom of the pull rod. A detection head is installed at one end of the detection line.

[0010] Preferably, a fixing block is installed on the outer side of the tester body, and two sets of first connecting rods are fixed on the inner wall of the fixing block.

[0011] Preferably, the inner wall of the fixing block is provided with a second spring, and the outer sides of both sets of the first connecting rods are rotatably connected to limit blocks, and the two limit blocks are fixedly connected to the two ends of the second spring.

[0012] Preferably, a knob is rotatably mounted on the outer side of the tester body, and a sealing disc is fixed at the bottom of the knob for sealing the connection between the knob and the tester body.

[0013] Preferably, the inner wall of the lower housing is fixed with a mounting base for supporting the tester body, and a limit rod is fixed to the top of the mounting base.

[0014] Preferably, two sets of mounting blocks are fixed to the outer sides of both the upper and lower housings, and two sets of handles are rotatably mounted on the inner walls of both sets of mounting blocks.

[0015] Preferably, the inner wall of the upper housing is fixed with a plug rod for limiting the tester body in conjunction with the limiting rod, and the outer side of the plug rod is fixed with a limiting plate for limiting the tester body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention improves the sealing effect at the interface by setting a rubber ring, thus preventing moisture from entering the tester. The rubber groove facilitates the use of a second fixing ring to enhance the sealing effect of the housing, preventing moisture from entering the housing during rainy weather and thus improving the overall sealing performance. The fixing tube facilitates the guidance of the test line to prevent the root from bending due to pulling. The combination of the pull rod and the first spring facilitates the organization of excess test lines, thus preventing physical damage such as pulling due to messy lines during removal. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the waterproof insulation resistance tester provided by this utility model;

[0019] Figure 2 A schematic diagram of the upper box structure provided by this utility model;

[0020] Figure 3 A schematic diagram of the lower housing structure provided by this utility model;

[0021] Figure 4 for Figure 3 A magnified structural diagram at point A is shown below;

[0022] Figure 5 A schematic diagram of the fixing base structure provided by this utility model;

[0023] Figure 6 for Figure 5 A magnified structural diagram of point B is shown.

[0024] In the diagram: 1. Upper housing; 2. Lower housing; 3. Tester body; 4. Rubber groove; 5. First fixing ring; 6. Second fixing ring; 7. Rubber ring; 8. Fixing tube; 9. Detection line; 10. Fixing plate; 11. Pull rod; 12. First spring; 13. Detection head; 14. Fixing block; 15. First connecting rod; 16. Second spring; 17. Limiting block; 18. Knob; 19. Sealing plate; 20. Fixing seat; 21. Limiting rod; 22. Mounting block; 23. Handle; 24. Connecting rod; 25. Limiting plate; 26. Baffle. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figures 1-6 As shown, a waterproof insulation resistance tester includes an upper housing 1 and a lower housing 2. The lower housing 2 facilitates the installation of the tester body 3. The lower housing 2 is rotatably connected to one end of the upper housing 1 via a hinge. The tester body 3 is installed on the inner wall of the lower housing 2. The tester body 3 is existing technology. The insulation resistance tester applies a DC voltage to the insulating material of the electrical equipment under test and calculates the insulation resistance value by measuring the current flowing through the insulating material. When the two electrodes of the tester are connected to the insulating material under test, the internal DC high voltage generator generates a stable DC high voltage applied to both ends of the insulating material. Under the action of this voltage, a small leakage current is generated in the insulating material. This current is detected by the measuring circuit, and then the insulation resistance value is calculated according to Ohm's law. The result is displayed through the display section. This is existing technology.

[0027] A rubber groove 4 is formed on the inner wall of the lower chamber 2, and a first fixing ring 5 is fixed on the inner wall of the upper chamber 1. The rubber groove 4 and the first fixing ring 5 work together to increase the sealing when the chamber is closed, thereby preventing moisture from entering the chamber and damaging the tester body 3.

[0028] The second fixing ring 6 is fixed to the inner wall of the tester body 3. By setting the second fixing ring 6, it is easy to install the rubber ring 7. The rubber ring 7 is installed on the inner wall of the second fixing ring 6. By setting the rubber ring 7, it is easy to increase the sealing of the connection port. The inner wall of the rubber ring 7 is connected to the fixing tube 8. By setting the fixing tube 8, it is easy to guide and protect the detection line 9, and prevent the detection line 9 from rubbing against the outer side of the tester body 3 during operation. The detection line 9 is set on the inner wall of the fixing tube 8. By setting the detection line 9, it is easy to connect the detection head 13, and the electrical input end of the detection line 9 is electrically connected to the electrical output end of the tester body 3.

[0029] A fixing plate 10 is installed inside the lower housing 2. A pull rod 11 slides along the inner wall of the fixing plate 10. A first spring 12 is installed on the outer side of the pull rod 11. A baffle 26 is fixedly connected to the bottom of the pull rod 11. A detection head 13 is installed at one end of the detection line 9. Two sets of fixing plates 10 are provided. By setting the fixing plates 10, it is easy to install the pull rod 11. The pull rod 11 slides inside the fixing plate 10. The first spring 12 is sleeved on the outer side of the pull rod 11, and the bottom of the first spring 12 contacts the top of the baffle 26. When storing the wire, the pull rod 11 can be pulled to raise the bottom baffle 26, at which time the wire can be wound up. The wire is wound inside the fixing plate 10. After winding, the pull rod 11 can be released to prevent the wound wire from falling outward and causing the internal wires to become messy. It should be noted that the fixing plate 10 has a space inside for winding the wire, which is convenient for storing the test wire. When the test wire is wound and stored, the pull rod 11 can be released. Under the reaction force of the first spring 12, the baffle 26 can be reset, thereby limiting the wound and stored test wire. Through the cooperation of the first spring 12 and the pull rod 11, the test wire 9 can be easily limited to prevent it from falling off. By setting the test head 13, it is convenient to test the wire that needs to be tested.

[0030] A fixing block 14 is installed on the outside of the tester body 3. By setting the fixing block 14, it is easy to install the first connecting rod 15. Two sets of first connecting rods 15 are fixed on the inner wall of the fixing block 14. By setting the first connecting rods 15, it is easy for the auxiliary limiting block 17 to rotate on the first connecting rod 15, and at the same time, the rotation stroke of the limiting block 17 is limited.

[0031] The inner wall of the fixing block 14 is provided with a second spring 16. By setting the second spring 16, it is easy to open one end of the two limiting blocks 17, thereby limiting the detection head 13 at the other end of the limiting block 17. The outer sides of the two sets of first connecting rods 15 are rotatably connected to the limiting blocks 17. By setting the limiting blocks 17, it is easy to limit the detection head 13 and prevent the detection head 13 from colliding in the box during travel. The two limiting blocks 17 are fixedly connected to both ends of the second spring 16. During use, by pressing one end of the limiting block 17, the limiting block 17 rotates around the first connecting rod 15 as the axis. At this time, the other end of the limiting block 17 will open outward, making it easy to take out the detection head 13. It should be noted that the space reserved in the fixing block 14 allows the end of the limiting block 17 close to the second spring 16 to rotate downward slightly. Since the end of the limiting block 17 away from the second spring 16 only needs to rotate a small displacement, the detection head 13 can be taken out.

[0032] A knob 18 is rotated on the outside of the tester body 3. The knob 18 facilitates the start of the tester body 3. A sealing plate 19 is fixed at the bottom of the knob 18 to seal the connection between the knob 18 and the tester body 3. The sealing plate 19 helps to prevent rainwater from entering the interior of the tester body 3.

[0033] The inner wall of the lower housing 2 is fixed with a mounting base 20 for supporting the tester body 3. By setting the mounting base 20, it is easy to support the tester body 3, and at the same time, it is easy to prevent moisture condensed at the bottom of the lower housing 2 from entering the interior of the tester body 3. The top of the mounting base 20 is fixed with a limiting rod 21. By setting the limiting rod 21, it is easy to limit the tester body 3.

[0034] Two sets of mounting blocks 22 are fixed on the outer sides of both the upper housing 1 and the lower housing 2. Two sets of handles 23 are rotatably mounted on the inner walls of both sets of mounting blocks 22. The position of the tester body 3 can be easily moved by the cooperation of the mounting blocks 22 and the handles 23.

[0035] The inner wall of the upper housing 1 is fixed with a plug rod 24 for limiting the tester body 3 in conjunction with the limiting rod 21. By setting the plug rod 24, it is easy to install the limiting plate 25. Through the cooperation of the plug rod 24, the limiting plate 25 and the limiting rod 21, it is easy to limit the tester body 3 when the entire housing is closed, preventing the tester body 3 from colliding with the entire housing during movement. The holes of the plug rod 24 correspond one-to-one with the limiting rod 21. In addition, the limiting plate 25 should be made of a deformable material such as rubber to prevent it from excessively squeezing the tester body 3 and causing damage.

[0036] Working principle: First, when the device is carried to the location where the circuit needs to be tested, the operator pulls the handle 23 on the outside of the upper box 1 to separate the upper box 1 from the lower box 2, thus opening the entire box. After opening, press the two sets of limit blocks 17 to retract the second spring 16. After the second spring 16 retracts, the other end of the two sets of limit blocks 17 will open outward, allowing the detection head 13 to be removed. Then, pull the lever 11 to disengage the limit detection line 9. At this point, pulling out the detection line 9 allows for insulation testing of the circuit to be tested. Because the detection line 9 is exposed during the testing process, the interface between the detection line 9 and the tester body 3 needs to be waterproofed. To waterproof the interface between the detection line 9 and the tester body 3, first pull the rubber ring 7 to move it. After the rubber ring 7 moves into the second fixing ring 6, the rubber ring 7 is then secured with the connecting bolt. The connection between the head 13 and the second fixing ring 6 is fixed to waterproof the interface. When it is necessary to store the detection head 13 and the detection line 9, press the two sets of limiting blocks 17 again, put the detection head 13 into the limiting blocks 17, and then release the two sets of limiting blocks 17 to limit the detection head 13. Then pull the lever 11 again, and the lever 11 will compress the first spring 12. At this time, the detection line 9 is wrapped around the outside of the fixing plate 10. Then release the lever 11, and the first spring 12 will rebound to limit the detection line 9 to prevent it from scattering, thereby rewinding and tidying up the outer detection line 9. After the work is completed, close the upper box 1 and the lower box 2. After the upper box 1 and the lower box 2 are closed, the first fixing ring 5 will smoothly enter the rubber groove 4. After the first fixing ring 5 and the rubber groove 4 are engaged, the entire box is sealed to prevent rainwater from entering the box.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A waterproof insulation resistance tester comprising an upper case (1), characterized in that, Also includes: Lower box (2) is connected to one side of the upper box (1) by hinge rotation, the inner wall of the lower box (2) is provided with test instrument body (3); Rubber tank (4) is opened in the inner wall of the lower box (2), the inner wall of the upper box (1) is fixed with the first fixed ring (5); The second fixed ring (6) is fixed to the inner wall of the test instrument body (3), the inner wall of the second fixed ring (6) is mounted with the rubber ring (7), the inner wall of the fixed pipe (8) is communicated with the detection line (9), and the electrical connection between the electrical input end of the detection line (9) and the electrical output end of the test instrument body (3) is electrically connected; The fixed plate (10) is arranged in the lower box (2), the inner wall of the fixed plate (10) is slidably connected with the pull rod (11), the outer side of the pull rod (11) is provided with the first spring (12), the bottom of the pull rod (11) is fixedly connected with the baffle (26), one end of the detection line (9) is mounted with the detection head (13).

2. The waterproof insulation resistance tester according to claim 1, characterized in that: The outer side of the test instrument body (3) is provided with a fixed block (14), the inner wall of the fixed block (14) is fixed with two groups of first connecting rods (15).

3. The waterproof insulation resistance tester according to claim 2, characterized in that: The inner wall of the fixed block (14) is provided with a second spring (16), the outer side of the two groups of first connecting rods (15) is rotatably connected with a limiting block (17), and the two limiting blocks (17) are fixedly connected with the two ends of the second spring (16).

4. The waterproof insulation resistance tester according to claim 1, characterized in that: The outer side of the test instrument body (3) is rotatably provided with a knob (18), the bottom of the knob (18) is fixedly connected with a sealing disc (19) for sealing the connection between the knob (18) and the test instrument body (3).

5. The waterproof insulation resistance tester according to claim 1, characterized in that: The inner wall of the lower box (2) is fixedly connected with a fixed seat (20) for supporting the test instrument body (3), and the top of the fixed seat (20) is fixedly connected with a limiting rod (21).

6. The waterproof insulation resistance tester according to claim 1, characterized in that: The outer side of the upper box (1) and the lower box (2) is fixedly connected with two groups of mounting blocks (22), the inner wall of the two groups of mounting blocks (22) is rotatably provided with two groups of handles (23).

7. The waterproof insulation resistance tester according to claim 5, wherein: The inner wall of the upper box (1) is fixedly connected with a plug-in rod (24) for limiting the test instrument body (3) in cooperation with the limiting rod (21), and the outer side of the plug-in rod (24) is fixedly connected with a limiting plate (25) for limiting the test instrument body (3).

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