Metering detection device of leakage current tester

Abstract

The utility model discloses a metering and detecting device of a leakage current tester, which comprises a leakage current metering and detecting host, an adjusting knob is mounted on the end face of the leakage current metering and detecting host, a detecting clamp body is connected onto the leakage current metering and detecting host through a lead, and a locking fluted disc is sleeved on the outer wall of the adjusting knob; the locking fluted disc, the synchronous hole, the synchronous block, the assembling seat and the locking plate are designed, the locking fluted disc is sleeved on the adjusting knob, and the synchronous block is matched with the synchronous hole, so that the locking fluted disc synchronously rotates along with the adjusting knob, and after alternating current and direct current selection and resistance value selection adjustment are carried out through the adjusting knob, the locking fluted disc is locked. One end of the locking plate is moved downwards to the side part of the locking fluted disc, so that the locking plate and the locking fluted disc are connected in a clamping manner, and the adjusting knob is locked, thereby effectively avoiding error rotation during operation on the main machine body, resulting in change of alternating current and direct current selection and resistance selection adjustment, and resulting in deviation of measurement and detection of leakage electricity testing.

Description

Technical Field

[0001] The utility model belongs to the technical field of leakage current tester metering detection devices, and in particular relates to a leakage current tester metering detection device. Background Art

[0002] The leakage current tester measurement detection device is developed and produced according to the requirements of JJG843-2007 National Metrology Verification Regulations and meets the requirements of JJG843-2007. This verification device integrates the functions of standard AC and DC current source, voltage source, AC and DC ammeter, voltmeter, frequency meter, distortion meter, etc., which greatly improves the efficiency of verification work.

[0003] The existing leakage current tester measurement and detection device integrates the functions of standard AC and DC current source, voltage source, AC and DC ammeter, voltmeter, frequency meter, distortion meter, etc., which greatly improves the efficiency of the verification work, but has the following defects:

[0004] (1) When the existing leakage current tester is in use, the AC / DC and resistance are adjusted by adjusting the knobs respectively, and then the detection clamp is clamped at the detection position for detection. However, when operating on the detection host, it is easy to accidentally touch the knob and cause the knob to rotate, resulting in changes in the AC / DC and resistance values, thereby causing the detection to be inaccurate. For this reason, we propose a leakage current tester measurement detection device. Utility Model Content

[0005] The utility model aims to provide a leakage current tester measuring and detecting device to solve the problem that the leakage current tester measuring and detecting device proposed in the above background technology is prone to accidental contact during use, resulting in erroneous rotation of the knob and affecting the detection accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage current tester metering and detection device, comprising a leakage current metering and detection host, an adjusting knob is installed on the end face of the leakage current metering and detection host, a detection clamp is connected to the leakage current metering and detection host through a wire, a locking gear disk is sleeved on the outer wall of the adjusting knob, a synchronization hole is opened on the surface of the adjusting knob, a synchronization block is arranged inside the synchronization hole, the synchronization block is fixed on the inner wall of the locking gear disk, an assembly seat is arranged on the outer side of the locking gear disk, the assembly seat is fixed on the leakage current metering and detection host, a locking plate is passed through the interior of the assembly seat, and one end of the locking plate is connected to the locking gear disk by snap-fitting.

[0007] Preferably, an assembly hole is opened on the surface of the locking plate, a limit plate is arranged inside the assembly hole, and the limit plate is fixed inside the assembly seat.

[0008] Preferably, three side frames in a circular array are provided on the side of the locking gear disc, and the side frames are fixed on the supporting frame body.

[0009] Preferably, a spherical groove is formed on the surface of the side frame, and a ball is embedded in the spherical groove.

[0010] Preferably, the longitudinal section of the locking plate is an L-shaped structure, and the cross section of the assembly seat is a rectangular structure.

[0011] Preferably, a spring is provided on one side of the limiting plate, and the spring is located inside the assembly hole.

[0012] Preferably, a guide hole is opened on the surface of the limiting plate, and a guide rod is provided on the inner side of the guide hole and the spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The locking gear disc, synchronization hole, synchronization block, assembly seat and locking plate are designed to mount the locking gear disc on the adjustment knob, and the locking gear disc rotates synchronously with the adjustment knob through the cooperation of the synchronization block and the synchronization hole. After the AC / DC selection and resistance selection are adjusted through the adjustment knob, one end of the locking plate is moved down to the side of the locking gear disc so that the two are engaged and connected to lock the adjustment knob, effectively avoiding misrotation during operation on the main body, resulting in changes in the AC / DC selection and resistance selection adjustment, and causing deviations in the leakage current test measurement detection. The side frame is designed, and the side frame It is arranged on the side of the locking sprocket to limit the locking sprocket to prevent it from shaking on the adjusting knob and affecting the locking engagement effect. The designed ball has a lubricating effect to reduce the wear between the side frame and the locking sprocket. The designed limit plate and assembly hole can limit the sliding of the locking plate to prevent it from detaching from the assembly seat. The designed spring, which is in a compressed state, releases the elastic force in the assembly hole, and applies elastic force to squeeze the locking plate, so that the locking plate and the locking sprocket are more firmly engaged. The designed guide rod and guide hole can correct the spring and prevent the spring from losing its elasticity due to excessive bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 This is an assembly side view of the adjusting knob, locking gear disc and locking plate of the utility model;

[0017] Figure 3 This is a front assembly cross-sectional view of the adjusting knob, locking gear disc and locking plate of the utility model;

[0018] Figure 4 This is a top view of the assembly of the assembly seat and the limiting plate of the utility model;

[0019] In the figure: 1. Leakage current metering detection host; 2. Assembly seat; 3. Locking plate; 4. Locking gear plate; 5. Side frame; 6. Adjustment knob; 7. Ball; 8. Limit plate; 9. Guide rod; 10. Spring; 11. Synchronous block; 12. Synchronous hole; 13. Assembly hole; 14. Guide hole. DETAILED DESCRIPTION

[0020] 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.

[0021] Example

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a leakage current tester metering and detecting device, comprising a leakage current metering and detecting host 1, an adjusting knob 6 is installed on the end face of the leakage current metering and detecting host 1, a detecting clamp body is connected to the leakage current metering and detecting host 1 through a wire, a locking toothed disc 4 is sleeved on the outer wall of the adjusting knob 6, a synchronization hole 12 is opened on the surface of the adjusting knob 6, a synchronization block 11 is arranged inside the synchronization hole 12, the synchronization block 11 is fixed on the inner wall of the locking toothed disc 4, an assembly seat 2 is arranged on the outer side of the locking toothed disc 4, the assembly seat 2 is fixed on the leakage current metering and detecting host 1, a locking plate 3 is penetrated inside the assembly seat 2, one end of the locking plate 3 is connected to the locking toothed disc 4 by snapping, through the designed locking toothed disc 4, synchronization hole 12, synchronization block 11, assembly seat 2 and The locking plate 3 is used to mount the locking toothed disk 4 on the adjusting knob 6, and the locking toothed disk 4 is rotated synchronously with the adjusting knob 6 through the cooperation of the synchronization block 11 and the synchronization hole 12. After the AC / DC selection and the resistance selection are adjusted through the adjusting knob 6, one end of the locking plate 3 is moved down to the side of the locking toothed disk 4 so that the two are engaged and connected to lock the adjusting knob 6, which effectively avoids the wrong rotation when operating on the main body, resulting in changes in the AC / DC selection and the resistance selection adjustment, and causing deviations in the leakage electrical test measurement detection. An assembly hole 13 is provided on the surface of the locking plate 3, and a limit plate 8 is provided on the inner side of the assembly hole 13. The designed limit plate 8 and assembly hole 13 are used to limit the sliding of the locking plate 3 to avoid separation from the assembly seat 2. The limit plate 8 is fixed inside the assembly seat 2.

[0023] In this embodiment, preferably, three side frames 5 in a circular array are provided on the side of the locking gear disc 4, and the side frames 5 are fixed on the supporting frame body. The side frames 5 are designed and arranged on the side of the locking gear disc 4 to limit the locking gear disc 4 and prevent it from shaking on the adjusting knob 6 and affecting the locking engagement effect. A spherical groove is provided on the surface of the side frame 5, and a ball 7 is embedded in the spherical groove. The designed ball 7 plays a lubricating role and reduces the wear between the side frame 5 and the locking gear disc 4. The longitudinal section of the locking plate 3 is an L-shaped structure, and the cross-section of the assembly seat 2 is a rectangular structure.

[0024] In this embodiment, preferably, a spring 10 is provided on one side of the limit plate 8. Through the designed spring 10, the spring 10 in a compressed state is in the assembly hole 13 to release the elastic force, and the elastic force is applied to the locking plate 3 to squeeze the locking plate 3, so that the locking plate 3 and the locking gear plate 4 are more firmly engaged. The spring 10 is inside the assembly hole 13, and a guide hole 14 is opened on the surface of the limit plate 8. The guide hole 14 and the inner side of the spring 10 are jointly provided with a guide rod. Through the designed guide rod 9 and guide hole 14, the spring 10 is corrected and limited to avoid excessive bending of the spring 10 and loss of elasticity.

[0025] The working principle and use process of the utility model are as follows: when conducting a leakage current test, the detection clamp body is clamped in the detection position, and the AC / DC selection and the resistance selection are adjusted and changed respectively by adjusting the knob 6. When adjusting, the locking plate 3 is pushed up to stop the locking plate 3 and the locking gear disc 4 is engaged and locked. After the AC / DC selection and the resistance selection are adjusted by the adjusting knob 6, one end of the locking plate 3 is moved down to the side of the locking gear disc 4 so that the two are engaged and connected, and the adjusting knob 6 is locked, which effectively avoids misrotation during operation on the main body, resulting in changes in the AC / DC selection and the resistance selection adjustment, and causing deviations in the leakage current test measurement detection, and the spring 10 in a compressed state applies elastic force to squeeze the locking plate 3, so that the locking plate 3 and the locking gear disc 4 are more firmly engaged.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage current tester measuring and detecting device, comprising a leakage current measuring and detecting host (1), an end surface of the leakage current measuring and detecting host (1) being provided with an adjusting knob (6), and a detecting clamp body being connected to the leakage current measuring and detecting host (1) via a wire, characterized in that: The outer wall of the adjusting knob (6) is sleeved with a locking toothed disc (4); a synchronization hole (12) is opened on the surface of the adjusting knob (6); a synchronization block (11) is arranged inside the synchronization hole (12); the synchronization block (11) is fixed on the inner wall of the locking toothed disc (4); an assembly seat (2) is arranged on the outer side of the locking toothed disc (4); the assembly seat (2) is fixed on the leakage current metering detection host (1); a locking plate (3) runs through the interior of the assembly seat (2); one end of the locking plate (3) is connected to the locking toothed disc (4) by snapping.

2. The leakage current tester measuring and detecting device according to claim 1, characterized in that: An assembly hole (13) is provided on the surface of the locking plate (3), a limit plate (8) is provided inside the assembly hole (13), and the limit plate (8) is fixed inside the assembly seat (2).

3. The leakage current tester measuring and detecting device according to claim 1, characterized in that: Three side frames (5) in a circular array are arranged on the side of the locking gear disc (4), and the side frames (5) are fixed on the supporting frame body.

4. The leakage current tester measuring and detecting device according to claim 3 is characterized in that: A spherical groove is provided on the surface of the side frame (5), and a ball (7) is embedded in the spherical groove.

5. The leakage current tester measuring and detecting device according to claim 2, characterized in that: The longitudinal section of the locking plate (3) is an L-shaped structure, and the cross section of the assembly seat (2) is a rectangular structure.

6. The leakage current tester measuring and detecting device according to claim 2, characterized in that: A spring (10) is provided on one side of the limiting plate (8), and the spring (10) is located inside the assembly hole (13).

7. The leakage current tester measuring and detecting device according to claim 6, characterized in that: A guide hole (14) is provided on the surface of the limiting plate (8), and a guide rod (9) is provided on the inner side of the guide hole (14) and the spring (10).

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