Portable leakage current tester

Abstract

The utility model relates to the technical field of current testers, and discloses a portable leakage current tester, which comprises a shell, a switch arranged at the side part of the shell, a testing head arranged at one end of the shell and comprising a contact block connected with the shell through a clamping assembly, and a clamping sheet fixedly arranged at the other end of the shell, a buffer assembly is installed in the middle of the shell, the clamping assembly comprises a fixing groove formed in the side portion of the contact block, in the using process of the equipment, if the testing head is not protected, the testing head is damaged when being collided, follow-up use is affected, the testing head can be protected through use of the contact block, and when the contact block is used for a long time, the testing head cannot be damaged. When the test head is used, the test head can be replaced through the clamping assembly, so that the protection effect of the test head can be improved as much as possible, the problem that the test head is damaged in the use process is solved, and the service life of the test head is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of current testers, in particular to a leakage current tester which is easy to carry. Background Art

[0002] Portable leakage current testers play a vital role in electrical safety testing. Leakage current testers can accurately measure the leakage current of electrical equipment, thereby evaluating the insulation performance of the equipment. By comparing the measured leakage current value with the insulation requirements or standards of the equipment, it can be determined whether the insulation condition of the equipment is good and whether there is a potential insulation fault; the magnitude of the leakage current is directly related to the safety of the electrical equipment. Excessive leakage current may indicate that the equipment has safety hazards, such as insulation aging, damage or contamination. By using a leakage current tester, these potential safety risks can be discovered in time, so that corresponding maintenance or replacement measures can be taken to avoid electrical accidents; by regularly testing the leakage current of electrical equipment, the downward trend or abnormal changes in insulation performance can be discovered in time. This helps to carry out preventive maintenance and take measures in advance to repair or improve the insulation performance of the equipment, thereby extending the service life of the equipment and improving the reliability and safety of the equipment.

[0003] In the prior art, if the test head is not protected during the use of the equipment, it will be damaged when it is accidentally collided, which will affect the subsequent use; therefore, it does not meet the existing needs. We have proposed a portable leakage current tester. Utility Model Content

[0004] The utility model provides a leakage current tester that is easy to carry and has the beneficial effect of extending the service life of the equipment. It solves the problem in the prior art mentioned in the above background technology that if the test head is not protected during the use of the equipment, the test head will be damaged when it is accidentally colliding, which will affect the subsequent use.

[0005] The utility model provides the following technical solution: a leakage current tester that is easy to carry, comprising a shell, a switch is installed on the side of the shell, a test head is installed at one end of the shell, the test head comprises a contact block connected to the shell through a snap-fit ​​assembly, a snap-fit ​​sheet is fixedly installed at the other end of the shell, and a buffer assembly is installed in the middle of the shell.

[0006] As an optional solution of a portable leakage current tester described in the utility model, the snap-fit ​​assembly includes a fixing groove opened on the side of the contact block, the side of the fixing groove is connected to a snap-fit ​​groove, and the middle of the fixing groove is snap-connected to a fixing block.

[0007] As an optional solution of a portable leakage current tester described in the utility model, wherein: a clamping rod is fixedly connected to the side of the fixed block, the clamping rod is clamped and connected to the clamping groove, and a clamping spring is sleeved on the side of the clamping rod.

[0008] As an optional solution for a portable leakage current tester described in the utility model, the contact block is provided with a slot in the middle, a transmission rod is snap-connected in the middle of the slot, a connecting slot is provided on the side of the transmission rod, a snap-connected block is snap-connected in the middle of the connecting slot, a limiting slot is provided on the side of the contact block, a limiting spring is installed in the middle of the limiting slot, and the bottom of the limiting spring is fixedly connected to the snap-connecting block.

[0009] As an optional solution of a portable leakage current tester described in the utility model, the buffer component includes a buffer groove opened in the middle of the shell, the bottom of the buffer groove is fixedly connected to a base plate, the side of the base plate is fixedly connected to a fixing plate, and a buffer cylinder is fixedly installed in the middle of the fixing plate.

[0010] As an optional solution of a portable leakage current tester described in the utility model, a buffer rod is inserted in the middle of the buffer cylinder, a rotating shaft is fixedly installed on the side of the buffer cylinder, a rotating rod is hinged on the side of the rotating shaft, and a rotating shaft is hinged on the end of the rotating rod.

[0011] As an optional solution of a portable leakage current tester described in the utility model, wherein: the rotating shaft is fixedly installed in the middle of the slider, the slider is slidably installed in the middle of the fixed frame, a sliding groove is opened in the middle of the fixed frame, and the slider is slidably connected in the middle of the sliding groove.

[0012] As an optional solution of a portable leakage current tester described in the utility model, wherein: a moving spring is fixedly connected to the side of the slider, and the slider, the rotating rod, the buffer cylinder and the buffer rod are all symmetrically arranged.

[0013] The utility model has the following beneficial effects:

[0014] 1. If the test head of the portable leakage current tester is not protected during use, it will be damaged when it is hit, which will affect subsequent use. The contact block can be used to protect it. When the contact block is used for a long time and the protection effect is not good, it can be replaced by a snap-on assembly. In this way, the protection effect of the test head can be improved as much as possible, solving the problem of damage to the test head during use, thereby greatly improving the service life of the test head.

[0015] 2. The portable leakage current tester will be damaged if it is accidentally dropped during use. The buffer component can be used to protect the device during the drop. The setting of the slider and the slide groove can further improve the buffer effect. The cooperation between the buffer tube and the buffer rod can provide buffer protection as much as possible when the device falls. The buffer tube and the buffer rod can also protect the core of the internal device, thereby greatly improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a side structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the structure of the clamping assembly of the utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the buffer component of the utility model.

[0020] In the figure: 110, housing; 130, snap-fitting piece; 140, test head; 150, switch; 160, transmission rod; 170, contact block; 180, snap-fitting groove; 190, fixing groove; 200, snap-fitting rod; 210, snap-fitting spring; 220, fixing block; 230, snap-fitting groove; 240, limiting groove; 250, limiting spring; 260, snap-fitting block; 270, connecting groove; 280, buffer groove; 300, bottom plate; 310, fixing plate; 320, buffer cylinder; 330, rotating shaft; 331, buffer rod; 332, rotating rod; 340, fixing frame; 350, rotating shaft; 360, sliding groove; 370, sliding block; 380, moving spring; 390, buffer assembly; 400, snap-fitting assembly. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1: This embodiment is intended to promote the solution of the problem in the prior art that if the test head 140 is not protected during the use of the device, the test head 140 will be damaged when it is accidentally hit, which will affect the subsequent use. Figure 1-Figure 4A portable leakage current tester includes a shell 110, a switch 150 is installed on the side of the shell 110, a test head 140 is installed at one end of the shell 110, the test head 140 includes a contact block 170 connected to the shell 110 through a snap-fit ​​assembly 400, a snap-fit ​​piece 130 is fixedly installed at the other end of the shell 110, and a buffer assembly 390 is installed in the middle of the shell 110.

[0023] The snap-fit ​​assembly 400 includes a fixing groove 190 provided on the side of the contact block 170, the side of the fixing groove 190 is connected to a snap-fit ​​groove 180, the middle of the fixing groove 190 is snap-fitted with a fixing block 220, the side of the fixing block 220 is fixedly connected with a snap-fit ​​rod 200, the snap-fit ​​rod 200 is snap-fitted with the snap-fit ​​groove 180, and the side of the snap-fit ​​rod 200 is sleeved with a snap-fit ​​spring 210.

[0024] During the use of the device, the test head 140 can be protected by the setting of the contact block 170. When the contact block 170 needs to be replaced, the staff will pull out the contact block 170. During the pulling out process, the fixing groove 190 and the fixing block 220 will be disengaged, and the connecting groove 270 will also be disengaged from the locking block 260. During the disengagement process, the locking spring 210 and the limit spring 250 will both expand and contract, thereby making the disengagement smoother.

[0025] When the device accidentally falls, the buffer component 390 is provided to protect the device as much as possible. When the device falls, the device will first contact the base plate 300, and then the impact force will impact the buffer cylinder 320. At this time, the buffer rod 331 will be inserted in the buffer cylinder 320. When the buffer cylinder 320 moves, the rotating rod 332 will rotate, and at this time, the slider 370 will be driven to squeeze the moving spring 380 in the slide groove 360, thereby buffering the impact force, so that the device can be protected.

[0026] In this embodiment: During the use of the device, if the test head 140 is not protected, then when the test head 140 is hit, it will be damaged, which will affect the subsequent use. By using the contact block 170, it can be protected. When the contact block 170 is used for a long time and the protection effect is not good, it can be replaced by the snap-fit ​​assembly 400. In this way, the protection effect of the test head 140 can be improved as much as possible, and the problem of the test head 140 being damaged during use is solved, thereby greatly improving the service life of the test head 140.

[0027] Embodiment 2: This embodiment is intended to promote the solution of the problem of protecting the device as much as possible when the device is accidentally dropped. This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 4A slot 230 is provided in the middle of the contact block 170, and the middle of the slot 230 is engaged with the transmission rod 160. A connecting slot 270 is provided on the side of the transmission rod 160, and the middle of the connecting slot 270 is engaged with the engaging block 260. A limiting slot 240 is provided on the side of the contact block 170, and a limiting spring 250 is installed in the middle of the limiting slot 240. The bottom of the limiting spring 250 is fixedly connected to the engaging block 260.

[0028] The buffer assembly 390 includes a buffer groove 280 opened in the middle of the shell 110, the bottom of the buffer groove 280 is fixedly connected to the bottom of the bottom plate 300, the side of the bottom plate 300 is fixedly connected to the fixed plate 310, the middle of the fixed plate 310 is fixedly installed with a buffer cylinder 320, the middle of the buffer cylinder 320 is inserted with a buffer rod 331, the side of the buffer cylinder 320 is fixedly installed with a rotating shaft 330, the side of the rotating shaft 330 is hinged with a rotating rod 332, and the end of the rotating rod 332 is hinged with a rotating shaft 350.

[0029] The rotating shaft 350 is fixedly installed in the middle of the slider 370, and the slider 370 is slidably installed in the middle of the fixed frame 340. A sliding groove 360 ​​is opened in the middle of the fixed frame 340. The slider 370 is slidably connected in the middle of the sliding groove 360. A movable spring 380 is fixedly connected to the side of the slider 370. The slider 370, the rotating rod 332, the buffer cylinder 320 and the buffer rod 331 are all symmetrically arranged.

[0030] In this embodiment: during the use of the device, if it is accidentally dropped, the entire device will be damaged. Therefore, the buffer component 390 is provided to protect the device during the drop. The setting of the slider 370 and the slide groove 360 ​​can further improve the buffering effect. The cooperation between the buffer cylinder 320 and the buffer rod 331 can provide buffering protection as much as possible when the device falls. The device core can also be protected by the buffer cylinder 320 and the buffer rod 331, thereby greatly improving the service life of the device.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A portable leakage current tester, comprising a housing (110), characterized in that: A switch (150) is installed on the side of the housing (110); a test head (140) is installed on one end of the housing (110); the test head (140) comprises a contact block (170) connected to the housing (110) via a snap-fit ​​assembly (400); a snap-fit ​​piece (130) is fixedly installed on the other end of the housing (110); and a buffer assembly (390) is installed in the middle of the housing (110).

2. A portable leakage current tester according to claim 1, characterized in that: The snap-fit ​​assembly (400) comprises a fixing groove (190) provided on the side of the contact block (170), the side of the fixing groove (190) is connected to a snap-fit ​​groove (180), and the middle of the fixing groove (190) is snap-fitted with a fixing block (220).

3. A portable leakage current tester according to claim 2, characterized in that: A clamping rod (200) is fixedly connected to the side of the fixed block (220), the clamping rod (200) is clamped and connected to the clamping groove (180), and a clamping spring (210) is sleeved on the side of the clamping rod (200).

4. The portable leakage current tester according to claim 1, characterized in that: A slot (230) is provided in the middle of the contact block (170), and a transmission rod (160) is snap-connected in the middle of the slot (230). A connecting slot (270) is provided on the side of the transmission rod (160), and a snap-connected block (260) is snap-connected in the middle of the connecting slot (270). A limiting slot (240) is provided on the side of the contact block (170), and a limiting spring (250) is installed in the middle of the limiting slot (240), and the bottom of the limiting spring (250) is fixedly connected to the snap-connected block (260).

5. The portable leakage current tester according to claim 1, characterized in that: The buffer assembly (390) comprises a buffer groove (280) opened in the middle of the housing (110); a bottom plate (300) is fixedly connected to the bottom of the buffer groove (280); a fixing plate (310) is fixedly connected to the side of the bottom plate (300); and a buffer cylinder (320) is fixedly installed in the middle of the fixing plate (310).

6. A portable leakage current tester according to claim 5, characterized in that: A buffer rod (331) is inserted in the middle of the buffer cylinder (320), a rotating shaft (330) is fixedly installed on the side of the buffer cylinder (320), a rotating rod (332) is hinged on the side of the rotating shaft (330), and a rotating shaft (350) is hinged on the end of the rotating rod (332).

7. A portable leakage current tester according to claim 6, characterized in that: The rotating shaft (350) is fixedly mounted in the middle of the sliding block (370), the sliding block (370) is slidably mounted in the middle of the fixed frame (340), a sliding groove (360) is provided in the middle of the fixed frame (340), and the sliding block (370) is slidably connected in the middle of the sliding groove (360).

8. The portable leakage current tester according to claim 7, characterized in that: A moving spring (380) is fixedly connected to the side of the slider (370), and the slider (370), the rotating rod (332), the buffer cylinder (320) and the buffer rod (331) are all symmetrically arranged.

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