Withstand voltage tester with electric shock protection function

Abstract

The invention discloses a withstand voltage tester with an electric shock protection function, and relates to the technical field of withstand voltage testers, the withstand voltage tester comprises a tester body, foot cups are fixedly connected to four corners of the bottom surface of the tester body, and a wiring terminal is fixedly connected to the rear side of the tester body. A fixing plate is fixedly connected to the middle of the rear side of the tester body, a console is fixedly mounted on the surface of the tester body, a first display panel is fixedly mounted on the surface of the console, a second display panel is fixedly mounted on the surface of the console, and an adjusting disc is arranged in the middle of the surface of the console. And a control panel is arranged on the surface of the console. According to the invention, the structure is reasonable, the cooperation of the protection assembly and the adjusting assembly facilitates the completion of the plugging work between the plug and the wiring terminal, the phenomenon of electric shock during use is avoided, and the phenomenon of loosening between the plug and the fixing plate can be avoided through the pressing plate on the protection assembly.

Description

Technical Field

[0001] The invention relates to the technical field of withstand voltage testers, and in particular to a withstand voltage tester with an electric shock protection function. Background Art

[0002] The withstand voltage tester can be called an electrical insulation strength tester, a dielectric strength tester, etc. according to its function. Its working principle is to apply a voltage higher than the normal working voltage to the insulator of the device under test for a specified period of time. The voltage applied to it will only produce a small leakage current, and the insulation is good. The test system consists of three modules: the programmable power supply module, the signal acquisition and conditioning module, and the computer control system.

[0003] The existing withstand voltage tester is provided with wiring terminals. When performing the withstand voltage test, the wires need to be plugged into the wiring terminals. Since the gap between the plug positions on the wiring terminals is small, electric shock is likely to occur when the plug is plugged in, and the plug is likely to fall off when the plug is plugged in, which will affect the normal use of the withstand voltage tester. Summary of the invention

[0004] The purpose of this application is to provide a voltage withstand tester with electric shock protection function, which realizes the coordinated use of protection components and adjustment components to facilitate the plugging and connection between the plug and the terminal, avoiding electric shock during use. The pressure plate on the protection component can prevent the plug and the fixing plate from loosening.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a voltage withstand tester with an electric shock protection function, comprising a tester body, wherein foot cups are fixedly connected to the four corners of the bottom surface of the tester body, a wiring terminal is fixedly connected to the rear side of the tester body, a fixing plate is fixedly connected to the middle position of the rear side of the tester body, a console is fixedly installed on the surface of the tester body, a first display panel is fixedly installed on the surface of the console, a second display panel is fixedly installed on the surface of the console, an adjustment disk is arranged in the middle position of the surface of the console, a control panel is installed on the surface of the console, a control switch is arranged on the surface of the control panel, and an adjustment switch is arranged on the surface of the control panel; further comprising a protection component, an adjustment component and a buffer component, the protection component is arranged at the rear side of the tester body for use in conjunction with a pressure plate, the adjustment component is arranged on the protection component for use, and the buffer component is arranged on both sides of the tester body for use.

[0006] Preferably, the protection assembly includes a pair of first shaft seats fixedly installed on both sides of the tester body, a side rod is fixedly connected between the pair of first shaft seats, a circular ring is fixedly connected to the middle position of the side rod, a sleeve is slidably connected to the side rod, one end of the sleeve is fixedly connected to a baffle, a first spring is sleeved on the side rod, and both ends of the first spring are respectively fixedly connected to one side of the circular ring and one side of the baffle.

[0007] Preferably, a docking plate is fixedly connected to the surface of the sleeve, a sleeve block is fixedly connected to the other end of the docking plate, the sleeve block is slidably connected to a fixed rod, both ends of the fixed rod are fixedly connected to a fixed seat, and the fixed seat is fixedly installed at the rear side of the tester body.

[0008] Preferably, a hinge seat is fixedly mounted on the sleeve block, a linkage plate is rotatably connected to the hinge seat, the other end of the linkage plate is rotatably connected to a pin column, one end of the pin column is fixedly connected to a side plate, and the side plate is fixedly connected to one end of the pressure plate.

[0009] Preferably, the pressing plate is provided with a plurality of groups of accommodating grooves, the interior of the accommodating grooves is slidably connected with supporting blocks, and the surface of the supporting blocks is fixedly connected with ribs.

[0010] Preferably, a sleeve is fixedly connected to the middle position of the bottom surface of the support block, the sleeve is slidably connected to a slide rod, one end of the slide rod is fixedly connected to the pressure plate, and the other end of the slide rod is fixedly connected to a retaining ring.

[0011] Preferably, the adjusting assembly includes a limit block fixedly mounted on the pressure plate, through grooves are provided on both sides of the limit block, a pressure block is arranged inside the limit block, both ends of the pressure block are fixedly connected to side seats, one end of the side seat extends to the outside of the limit block through the through groove, the side seat is slidably connected to the guide rod, the bottom end of the guide rod is fixedly connected to the base, one end of the base is fixedly connected to one side of the limit block, the top end of the guide rod is fixedly connected to a clamping ring, a second spring is sleeved on the guide rod, and both ends of the second spring are respectively fixedly connected to the bottom surface of the clamping ring and the top surface of the side seat.

[0012] Preferably, a top block is fixedly connected to the top surface of the pressure block, an arc-shaped groove is opened on the top block, a pair of limit seats are fixedly connected to the limit block, a cam is rotatably connected between the pair of limit seats, the bottom of the cam is positioned on the inner wall of the arc-shaped groove, and a pull plate is fixedly connected to the surface of the cam.

[0013] Preferably, the buffer assembly includes a positioning seat fixedly installed on both sides of the tester body, the positioning seat is provided with a slide groove, the positioning seat is fixedly connected to a limit rod, a driven block is slidably connected to the limit rod, one side of the driven block is fixedly connected to a sliding shaft, the sliding shaft is slidably connected to the inside of the slide groove, a disc is fixedly connected to the middle position of the limit rod, a third spring is sleeved on the limit rod, two ends of the third spring are respectively fixedly connected to one side of the driven block and one side of the disc, the driven block is fixedly connected with a rotating shaft, a push plate is rotatably connected to the rotating shaft, the other end of the push plate is rotatably connected to the bracket, the bracket is provided with a slot, and the bracket is fixedly connected with a handle.

[0014] Preferably, a bracket is fixedly installed on the top surface of the tester body, a positioning rod is fixedly connected to the bracket, a movable block is slidably connected to the positioning rod, one end of the positioning rod is fixedly connected to a positioning ring, a fourth spring is sleeved on the positioning rod, two ends of the fourth spring are respectively fixedly connected to one side of the positioning ring and one side of the movable block, and a clamping block is fixedly installed on the movable block.

[0015] In summary, the present invention has the following beneficial effects: The present invention has a reasonable structure. The wire plug is placed inside the support block, and then the pressure plate is pushed as a whole. The side plate is moved by the movement of the pressure plate. The movement of the side plate drives the sleeve block on the hinge seat to slide on the fixed rod through the linkage plate. A docking plate is fixedly connected to the sleeve block, and the other end of the docking plate is fixedly connected to the sleeve. The movement of the sleeve block drives the sleeve to slide on the side rod through the docking plate, so that the first spring is pulled easily. The movement of the pressure plate facilitates the plug inside the support block to be plugged in with the wiring terminal, thereby preventing electric shock. In the present invention, when it is necessary to fix the position of the pressing plate, a limiting block is fixedly connected to the top position of the pressing plate, and a fixed plate is slidably connected inside the limiting block, one end of the fixed plate is fixedly connected to the tester body, and the limiting block is driven to slide on the fixed plate by the movement of the pressing plate. After the position is determined, the pulling plate is pulled, and then the cam presses down the top block, which is fixedly connected to the pressing block. The pressing block is moved by the movement of the top block, and the movement of the pressing block facilitates the side seat to slide on the guide rod, so that the pressing block is tightly clamped on the fixed plate to fix the position of the pressing plate, thereby avoiding the phenomenon of falling off between the plug and the wiring terminal. 3. In the present invention, the tester body is carried by the handle on the bracket. When the bracket is folded, the handle is pressed down, and then the bracket moves downward. The movement of the bracket pushes the driven block on the rotating shaft to slide on the limit rod through the push plate, so as to facilitate the pulling of the third spring. A card slot is provided on the bracket, and the card block is squeezed by the movement of the bracket, so as to facilitate the sliding of the movable block on the positioning rod. The movement of the positioning rod pulls the fourth spring. When the card block moves into the inside of the card slot, the elastic force of the fourth spring makes the card block stuck in the inside of the card slot, so as to facilitate the fixing of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the tester body; Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of the tester body; Figure 3 This is a schematic diagram of the three-dimensional structure of the tester body when viewed from above; Figure 4 It is a schematic diagram of the three-dimensional structure of the pressing plate; Figure 5 It is a schematic diagram of the three-dimensional structure of the side panel; Figure 6 It is a schematic diagram of the limit block structure; Figure 7 is a schematic diagram of the three-dimensional structure of the bracket; Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. Tester body; 101. Foot cup; 102. Terminal block; 103. Fixing plate; 104. Control console; 105. First display panel; 106. Second display panel; 107. Adjustment plate; 108. Control panel; 109. Control switch; 110. Adjustment switch; 2. First shaft seat; 201. Side rod; 202. Ring; 203. Sleeve; 204. Baffle; 205. First spring; 206. Docking plate; 207. Bushing block; 208. Fixing rod; 209. Fixing seat; 210. Articulated seat; 211. Linkage plate; 212. Pin; 213. Side plate; 3. Pressing plate; 301. Accommodating groove; 302. Support block; 303. Rib; 304. Bushing; 30 5. Slide rod; 306. Retaining ring; 4. Limit block; 401. Through groove; 402. Press block; 403. Side seat; 404. Guide rod; 405. Base; 406. Snap ring; 407. Second spring; 408. Top block; 409. Arc groove; 410. Limit seat; 411. Cam; 412. Pull plate; 5. Positioning seat; 501. Slide groove; 502. Limit rod; 503. Follower block; 504. Sliding shaft; 505. Disc; 506. Third spring; 507. Rotating shaft; 508. Push plate; 509. Bracket; 510. Slot; 511. Handle; 512. Support seat; 513. Positioning rod; 514. Movable block; 515. Positioning ring; 516. Fourth spring; 517. Block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Reference Figure 1 - Figure 8A withstand voltage tester with an electric shock protection function is shown, comprising a tester body 1, wherein foot cups 101 are fixedly connected to the four corners of the bottom surface of the tester body 1, a wiring terminal 102 is fixedly connected to the rear side of the tester body 1, a fixing plate 103 is fixedly connected to the middle position of the rear side of the tester body 1, a console 104 is fixedly installed on the surface of the tester body 1, a first display panel 105 is fixedly installed on the surface of the console 104, a second display panel 106 is fixedly installed on the surface of the console 104, an adjusting disk 107 is arranged in the middle position of the surface of the console 104, a control panel 108 is installed on the surface of the console 104, a control switch 109 is arranged on the surface of the control panel 108, and an adjusting switch 110 is arranged on the surface of the control panel 108; it also comprises a protection component, an adjustment component and a buffer component, the protection component is arranged at the rear side of the tester body 1 for use in conjunction with the pressure plate 3, the adjustment component is arranged on the protection component for use, and the buffer component is arranged on both sides of the tester body 1 for use.

[0021] Specifically, it should be noted that the test parameters can be displayed through the first display panel 105 and the second display panel 106, and the parameters can be adjusted through the adjustment dial 107. The specific working principles are referenced through the existing technology and will not be elaborated here.

[0022] As an implementation method in this embodiment, the protection component includes a pair of first shaft seats 2 fixedly installed on both sides of the tester body 1, a side rod 201 is fixedly connected between the pair of first shaft seats 2, a ring 202 is fixedly connected to the middle position of the side rod 201, a sleeve 203 is slidably connected to the side rod 201, one end of the sleeve 203 is fixedly connected to a baffle 204, a first spring 205 is sleeved on the side rod 201, the two ends of the first spring 205 are respectively fixedly connected to one side of the ring 202 and one side of the baffle 204, a docking plate 206 is fixedly connected to the surface of the sleeve 203, the other end of the docking plate 206 is fixedly connected to a sleeve block 207, the sleeve block 207 is slidably connected to the fixed rod 208, and the two ends of the fixed rod 208 are fixedly connected to the fixed seat 209 The fixed seat 209 is fixedly installed at the rear side of the tester body 1, and the sleeve block 207 is fixedly installed with a hinge seat 210, and the hinge seat 210 is rotatably connected with a linkage plate 211, and the other end of the linkage plate 211 is rotatably connected to the pin 212, and one end of the pin 212 is fixedly connected to the side plate 213, and the side plate 213 is fixedly connected to one end of the pressure plate 3, and a plurality of groups of accommodating grooves 301 are opened on the pressure plate 3, and the interior of the accommodating groove 301 is slidably connected with a support block 302, and the surface of the support block 302 is fixedly connected with a rib 303, and the middle position of the bottom surface of the support block 302 is fixedly connected with a sleeve seat 304, and the sleeve seat 304 is slidably connected to the slide rod 305, and one end of the slide rod 305 is fixedly connected to the pressure plate 3, and the other end of the slide rod 305 is fixedly connected to the retaining ring 306.

[0023] Specifically, the wire plug is placed inside the support block 302, and then the pressure plate 3 is pushed as a whole. The side plate 213 is moved by the movement of the pressure plate 3. The movement of the side plate 213 drives the sleeve 207 on the hinge seat 210 to slide on the fixed rod 208 through the linkage plate 211. The sleeve 207 is fixedly connected with a docking plate 206, and the other end of the docking plate 206 is fixedly connected to the sleeve 203. The movement of the sleeve 207 drives the sleeve 203 to slide on the side rod 201 through the docking plate 206, thereby facilitating the pulling of the first spring 205. The movement of the pressure plate 3 facilitates the plug inside the support block 302 to be plugged in with the terminal block 102 to prevent electric shock.

[0024] As an implementation method in this embodiment, the adjustment component includes a limit block 4 fixedly installed on the pressure plate 3, through grooves 401 are opened on both sides of the limit block 4, a pressure block 402 is arranged inside the limit block 4, both ends of the pressure block 402 are fixedly connected with side seats 403, one end of the side seat 403 extends to the outside of the limit block 4 through the through groove 401, the side seat 403 is slidably connected to the guide rod 404, the bottom end of the guide rod 404 is fixedly connected to the base 405, one end of the base 405 is fixedly connected to one side of the limit block 4, and the top of the guide rod 404 A retaining ring 406 is fixedly connected, and a second spring 407 is sleeved on the guide rod 404. The two ends of the second spring 407 are respectively fixedly connected to the bottom surface of the retaining ring 406 and the top surface of the side seat 403. The top surface of the pressure block 402 is fixedly connected to a top block 408, and an arc groove 409 is opened on the top block 408. A pair of limit seats 410 are fixedly connected to the limit block 4, and a cam 411 is rotatably connected between the pair of limit seats 410. The bottom position of the cam 411 fits on the inner wall of the arc groove 409, and a pull plate 412 is fixedly connected to the surface of the cam 411.

[0025] Specifically, when it is necessary to fix the position of the pressure plate 3, a limit block 4 is fixedly connected to the top position of the pressure plate 3, and a fixed plate 103 is slidably connected inside the limit block 4, one end of the fixed plate 103 is fixedly connected to the tester body 1, and the limit block 4 is driven to slide on the fixed plate 103 by the movement of the pressure plate 3. After the position is determined, the pulling plate 412 is pulled, and then the cam 411 presses down the top block 408, and the top block 408 is fixedly connected to the pressure block 402. The pressure block 402 is moved by the movement of the top block 408. The movement of the pressure block 402 facilitates the sliding of the side seat 403 on the guide rod 404, so that the pressure block 402 is tightly clamped on the fixed plate 103 to fix the position of the pressure plate 3, thereby avoiding the plug and the terminal 102 from falling off.

[0026] As an implementation method in this embodiment, the buffer assembly includes a positioning seat 5 fixedly installed at both sides of the tester body 1, the positioning seat 5 is provided with a slide groove 501, a limiting rod 502 is fixedly connected to the positioning seat 5, a driven block 503 is slidably connected to the limiting rod 502, a sliding shaft 504 is fixedly connected to one side of the driven block 503, the sliding shaft 504 is slidably connected to the inside of the slide groove 501, a disc 505 is fixedly connected to the middle position of the limiting rod 502, a third spring 506 is sleeved on the limiting rod 502, and two ends of the third spring 506 are respectively fixedly connected to one side of the driven block 503 and one side of the disc 505, and a rotating shaft 50 is fixedly connected to the driven block 503 7. A push plate 508 is rotatably connected to the rotating shaft 507, and the other end of the push plate 508 is rotatably connected to a bracket 509. A card slot 510 is provided on the bracket 509, and a handle 511 is fixedly connected to the bracket 509. A bracket 512 is fixedly installed on the top surface of the tester body 1, and a positioning rod 513 is fixedly connected to the bracket 512. A movable block 514 is slidably connected to the positioning rod 513. One end of the positioning rod 513 is fixedly connected to a positioning ring 515. The positioning rod 513 is sleeved with a fourth spring 516. The two ends of the fourth spring 516 are respectively fixedly connected to one side of the positioning ring 515 and one side of the movable block 514, and a card block 517 is fixedly installed on the movable block 514.

[0027] Specifically, the tester body 1 is carried by the handle 511 on the bracket 509. When the bracket 509 is folded, the handle 511 is pressed down, and then the bracket 509 moves downward. The movement of the bracket 509 pushes the driven block 503 on the rotating shaft 507 to slide on the limiting rod 502 through the push plate 508, so as to facilitate the pulling of the third spring 506. A slot 510 is provided on the bracket 509. The block 517 is squeezed by the movement of the bracket 509, so as to facilitate the sliding of the movable block 514 on the positioning rod 513. The movement of the positioning rod 513 pulls the fourth spring 516. When the block 517 moves into the slot 510, the elastic force of the fourth spring 516 makes the block 517 stuck in the slot 510, so as to facilitate the fixing of the bracket 509.

[0028] The working principle of the present invention is as follows: the wire plug is placed inside the support block 302, and then the pressure plate 3 is pushed as a whole, and the side plate 213 is moved by the movement of the pressure plate 3. The movement of the side plate 213 drives the sleeve block 207 on the hinge seat 210 to slide on the fixed rod 208 through the linkage plate 211. The sleeve block 207 is fixedly connected with the docking plate 206, and the other end of the docking plate 206 is fixedly connected to the sleeve 203. The movement of the sleeve block 207 drives the sleeve 203 to slide on the side rod 201 through the docking plate 206, so as to facilitate the pulling of the first spring 205. The movement of the pressure plate 3 facilitates the plug inside the support block 302 to be plugged in with the wiring terminal 102, thereby preventing electric shock. When it is necessary to fix the position of the pressing plate 3, a limit block 4 is fixedly connected to the top position of the pressing plate 3, and a fixed plate 103 is slidably connected inside the limit block 4, one end of the fixed plate 103 is fixedly connected to the tester body 1, and the limit block 4 is driven to slide on the fixed plate 103 by the movement of the pressing plate 3. After the position is determined, the pulling plate 412 is pulled, and then the cam 411 presses down the top block 408, and the top block 408 is fixedly connected to the pressing block 402. The pressing block 402 is moved by the movement of the top block 408. The movement of the pressing block 402 facilitates the sliding of the side seat 403 on the guide rod 404, so that the pressing block 402 is tightly clamped on the fixed plate 103 to fix the position of the pressing plate 3, thereby avoiding the phenomenon of falling off between the plug and the terminal 102; The tester body 1 is carried by the handle 511 on the bracket 509. When the bracket 509 is folded, the handle 511 is pressed down, and then the bracket 509 moves downward. The movement of the bracket 509 pushes the driven block 503 on the rotating shaft 507 to slide on the limit rod 502 through the push plate 508, so as to facilitate the pulling of the third spring 506. A slot 510 is provided on the bracket 509. The block 517 is squeezed by the movement of the bracket 509, so as to facilitate the sliding of the movable block 514 on the positioning rod 513. The movement of the positioning rod 513 pulls the fourth spring 516. When the block 517 moves into the slot 510, the elastic force of the fourth spring 516 makes the block 517 stuck in the slot 510, so as to facilitate the fixing of the bracket 509.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 withstand voltage tester with electric shock protection function, comprising a tester body (1), characterized in that: The four corners of the bottom surface of the tester body (1) are fixedly connected with foot cups (101); the rear side of the tester body (1) is fixedly connected with a wiring terminal (102); the middle position of the rear side of the tester body (1) is fixedly connected with a fixing plate (103); the surface of the tester body (1) is fixedly mounted with a console (104); the surface of the console (104) is fixedly mounted with a first display panel (105); the surface of the console (104) is fixedly mounted with a second display panel (106); the middle position of the surface of the console (104) is provided with an adjustment disk (107); the surface of the console (104) is provided with a control panel (108); the surface of the control panel (108) is provided with a control switch (109); the surface of the control panel (108) is provided with an adjustment switch (110); It also comprises a protection component, an adjustment component and a buffer component, wherein the protection component is arranged at the rear side of the tester body (1) for use in conjunction with a pressure plate (3), the adjustment component is arranged on the protection component for use, and the buffer component is arranged on both sides of the tester body (1) for use.

2. A withstand voltage tester with electric shock protection function according to claim 1, characterized in that: The protection component comprises a pair of first shaft seats (2) fixedly mounted on both sides of the tester body (1); a side rod (201) is fixedly connected between the pair of first shaft seats (2); a ring (202) is fixedly connected to the middle of the side rod (201); a sleeve (203) is slidably connected to the side rod (201); a baffle (204) is fixedly connected to one end of the sleeve (203); a first spring (205) is sleeved on the side rod (201); and two ends of the first spring (205) are respectively fixedly connected to one side of the ring (202) and one side of the baffle (204).

3. A withstand voltage tester with electric shock protection function according to claim 2, characterized in that: A docking plate (206) is fixedly connected to the surface of the sleeve (203); a sleeve block (207) is fixedly connected to the other end of the docking plate (206); the sleeve block (207) is slidably connected to a fixed rod (208); both ends of the fixed rod (208) are fixedly connected to a fixed seat (209); and the fixed seat (209) is fixedly installed at the rear side of the tester body (1).

4. A withstand voltage tester with electric shock protection function according to claim 3, characterized in that: A hinge seat (210) is fixedly mounted on the sleeve block (207), a linkage plate (211) is rotatably connected to the hinge seat (210), the other end of the linkage plate (211) is rotatably connected to a pin column (212), one end of the pin column (212) is fixedly connected to a side plate (213), and the side plate (213) is fixedly connected to one end of the pressure plate (3).

5. A withstand voltage tester with electric shock protection function according to claim 4, characterized in that: The pressing plate (3) is provided with a plurality of groups of accommodating grooves (301), the interior of the accommodating grooves (301) is slidably connected to a supporting block (302), and the surface of the supporting block (302) is fixedly connected to a rib (303).

6. A withstand voltage tester with electric shock protection function according to claim 5, characterized in that: A sleeve seat (304) is fixedly connected to the middle of the bottom surface of the support block (302), and the sleeve seat (304) is slidably connected to a slide rod (305). One end of the slide rod (305) is fixedly connected to the pressure plate (3), and the other end of the slide rod (305) is fixedly connected to a retaining ring (306).

7. A withstand voltage tester with electric shock protection function according to claim 1, characterized in that: The adjustment assembly comprises a limit block (4) fixedly mounted on the pressure plate (3), through slots (401) being provided on both sides of the limit block (4), a pressure block (402) being arranged inside the limit block (4), side seats (403) being fixedly connected at both ends of the pressure block (402), one end of the side seat (403) extending to the outside of the limit block (4) through the through slot (401), the side seat (403) being slidably connected to a guide rod (404), the bottom end of the guide rod (404) being fixedly connected to a base (405), one end of the base (405) being fixedly connected to one side of the limit block (4), the top end of the guide rod (404) being fixedly connected to a snap ring (406), a second spring (407) being sleeved on the guide rod (404), the two ends of the second spring (407) being fixedly connected to the bottom surface of the snap ring (406) and the top surface of the side seat (403) respectively.

8. A withstand voltage tester with electric shock protection function according to claim 7, characterized in that: The top surface of the pressing block (402) is fixedly connected to a top block (408), an arc-shaped groove (409) is formed on the top block (408), a pair of limit seats (410) are fixedly connected to the limit block (4), a cam (411) is rotatably connected between the pair of limit seats (410), the bottom of the cam (411) is fitted on the inner wall of the arc-shaped groove (409), and a pull plate (412) is fixedly connected to the surface of the cam (411).

9. A withstand voltage tester with electric shock protection function according to claim 1, characterized in that: The buffer assembly comprises a positioning seat (5) fixedly mounted on both sides of the tester body (1), a slide groove (501) being provided on the positioning seat (5), a limiting rod (502) being fixedly connected to the positioning seat (5), a driven block (503) being slidably connected to the limiting rod (502), a sliding shaft (504) being fixedly connected to one side of the driven block (503), the sliding shaft (504) being slidably connected to the inside of the slide groove (501), a disc (505) being fixedly connected to the middle position of the limiting rod (502), and the limiting rod (502) being fixedly connected to the driven block (503). A third spring (506) is sleeved on the positioning rod (502), and two ends of the third spring (506) are respectively fixedly connected to one side of the driven block (503) and one side of the disc (505). The driven block (503) is fixedly connected to a rotating shaft (507), and a push plate (508) is rotatably connected to the rotating shaft (507). The other end of the push plate (508) is rotatably connected to a bracket (509). A slot (510) is provided on the bracket (509), and a handle (511) is fixedly connected to the bracket (509).

10. A withstand voltage tester with electric shock protection function according to claim 9, characterized in that: A bracket (512) is fixedly mounted on the top surface of the tester body (1); a positioning rod (513) is fixedly connected to the bracket (512); a movable block (514) is slidably connected to the positioning rod (513); a positioning ring (515) is fixedly connected to one end of the positioning rod (513); a fourth spring (516) is sleeved on the positioning rod (513); two ends of the fourth spring (516) are respectively fixedly connected to one side of the positioning ring (515) and one side of the movable block (514); and a clamping block (517) is fixedly mounted on the movable block (514).

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