Grounding validity detection device

Abstract

The utility model relates to the technical field of charging gun grounding detection, and discloses a grounding validity detection device, which comprises a shell, a cover plate arranged at the top of the shell, and a circuit board arranged in the shell. The connecting line is matched in the lower groove of the fixing seat, then the pressing piece is clamped to the top of the fixing seat in cooperation with the clamping groove, at the moment, the pressing plate can be used for being matched with the fixing seat to press the top of the connecting line, therefore, pressing and positioning of the connecting line can be achieved, and the problem that the connecting line shakes and is unsoldered in the long-term use process of the connecting line is solved; and long-term use of the grounding effectiveness detection device is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging gun grounding detection technical field, concretely is a kind of grounding effectiveness detection device. BACKGROUND

[0002] Charging gun is the equipment for providing electric energy to electric vehicle (EV) or hybrid electric vehicle (PHEV), usually connected to charging station or charging pile, with the function of transmitting electric energy to vehicle. The grounding effectiveness detection device is a device for detecting whether the grounding system of electric vehicle charging equipment is safe and reliable. This device can ensure that the grounding electrical characteristics of the charging gun meet the safety standards during charging, thereby preventing electrical accidents and equipment damage.

[0003] The existing grounding effectiveness detection device is internally provided with a circuit board, and the connecting line for grounding detection is welded on the circuit board. In the long-term use of the grounding effectiveness detection device, the connecting line is easily detached from the circuit board when subjected to external shaking or accidental pulling, thereby causing the grounding effectiveness detection device to be unable to be normally used. Therefore, we propose a grounding effectiveness detection device. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a grounding effectiveness detection device to solve the problem of the connecting line being easily detached from the circuit board when subjected to external shaking or accidental pulling as proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a grounding effectiveness detection device, comprising:

[0006] A housing is provided with a cover plate on the top, and a circuit board is arranged inside the housing.

[0007] A fixing seat is fixed to the side wall of the housing, and the top of the fixing seat is provided with a clamping groove and a lower groove. A rubber semicircular tube is arranged on the side wall of the fixing seat, and a sticky tape I is arranged outside the rubber semicircular tube. A moisture-absorbing sheet is arranged inside the fixing seat.

[0008] A compression member is arranged on the top of the fixing seat, and the top of the compression member is provided with a sealing film and a sticky tape II. A plurality of grooves are arranged on the bottom of the compression member, and a compression plate is arranged inside the compression member.

[0009] Preferably, the side wall of the housing is provided with a fixing sheet.

[0010] Preferably, the compression member is provided with a limiting block at both ends.

[0011] Preferably, the side wall of the rubber semicircular tube is provided with a connecting strip.

[0012] Preferably, the pressing plate bottom is provided with a rubber strip.

[0013] Preferably, a spring is arranged between the pressing plate and the pressing member.

[0014] Preferably, the pressing member is matched with the side wall of the cover plate.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The utility model discloses a pressing member is arranged on the top of the fixed seat, when the connecting line of the circuit board and external device is welded, the connecting line is matched in the lower groove of the fixed seat, and then the pressing member is clamped on the top of the fixed seat through the clamping groove, so that the pressing plate is matched with the fixed seat and is pressed on the top of the connecting line, thereby realizing the pressing positioning of the connecting line, avoiding the problem that the connecting line shakes and is disconnected during long-term use, and being beneficial to the long-term use of the grounding effectiveness detection device.

[0017] 2. The utility model discloses a sealing film and a sticking tape are arranged in the fixed seat and matched with the pressing member outside, the sealing film and the sticking tape are used to seal the outside of the pressing member, so that the pressing member is pressed and the inside of the pressing member is dehumidified through the moisture absorption sheet, thereby the air near the welding position of the connecting line can be dehumidified and kept dry, and the inside of the shell can be kept dry, thereby avoiding the problem that the welding position of the connecting line is too humid and rusts and corrodes, and improving the moisture-proof effect of the grounding effectiveness detection device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the inside structure schematic diagram of the shell of the utility model;

[0020] Figure 3 It is the structure schematic diagram of the pressing member of the utility model;

[0021] Figure 4 It is the inside structure schematic diagram of the pressing member of the utility model;

[0022] Figure 5 It is the circuit module flow schematic diagram of the circuit board of the utility model;

[0023] Figure 6 It is the circuit schematic diagram of the circuit board of the utility model.

[0024] In the figure: 100, the shell; 101, the fixed sheet; 110, the cover plate; 120, the circuit board; 200, the fixed seat; 210, the rubber semicircular pipe; 211, the connecting strip; 220, the first adhesive tape; 230, the clamping groove; 240, the lower groove; 241, the moisture absorbing sheet; 300, the compression part; 301, the sealing film; 302, the groove; 303, the second adhesive tape; 310, the limiting block; 320, the compression plate; 321, the rubber strip. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] EMBODIMENT

[0027] Please refer to Figures 1-6 , a kind of ground effectiveness detection device in the figure, including:

[0028] The top of shell 100 is provided with cover plate 110, and the inside of shell 100 is provided with circuit board 120;

[0029] In some embodiments, the circuit module inside circuit board 120 can be referred to the attached Figure 5 , and the circuit inside circuit board 120 can be referred to the attached Figure 6 Wherein, when the AC charging gun circuit is not effectively grounded, the zero fire line and the ground of the detection circuit cannot form an effective loop, and the signal detected at the output end is DC voltage VDD;When the AC charging gun circuit is effectively grounded, the sine voltage of the detection circuit passes through diode half-wave rectification, then passes through resistance and stabilizing tube to generate the current of driving triode, and the output end of triode generates 50HZ square wave, and at the same time, R2, R3, R5, R6, R7 in the circuit are large power current limiting, the static current is extremely small and enough to drive stabilizing tube and triode, and using triode detection, the cost is low, the signal is stable, and MCU can be more effectively protected.

[0030] The fixed seat 200 is fixed to the side wall of the shell 100, and the top of the fixed seat 200 is provided with a clamping groove 230 and a lower groove 240 matched with the connecting line. The side wall of the fixed seat 200 is provided with a rubber semicircular tube 210, and the outside of the rubber semicircular tube 210 is provided with a sticky tape 220. The sticky tape 220 can be used to paste and bind the rubber semicircular tube 210 matched with the external connecting line. The sticky tape 220 and the sticky tape 303 are common power tapes on the market. When the compression member 300 is compressed on the top of the fixed seat 200, the sticky tape 303 can be used to fix and seal the compression member 300. The inside of the fixed seat 200 is provided with a moisture absorbing sheet 241, which is made of common cotton strips, and the cotton strips are provided with common calcium chloride drying particles.

[0031] The compression member 300 is arranged on the top of the fixed seat 200, and the top of the compression member 300 is provided with a sealing film 301 and a sticky tape 303. The sealing film 301 is a plastic film, and the bottom of the plastic film is coated with a common adhesive. The compression member 300 and the cover plate 110 can be fixed and sealed. Similarly, the sealing film 301 can be used to seal other gaps of the shell 100. The bottom of the compression member 300 is provided with a plurality of grooves 302 matched with the connecting line, and the inside of the compression member 300 is provided with a compression plate 320.

[0032] Specifically, the side wall of the shell 100 is provided with a fixed sheet 101.

[0033] Further, the compression member 300 is provided with a limiting block 310 at both ends.

[0034] Further, the side wall of the rubber semicircular tube 210 is provided with a connecting strip 211, which is made of hard plastic.

[0035] Further, the bottom of the compression plate 320 is provided with a rubber strip 321.

[0036] It is worth mentioning that the compression plate 320 and the compression member 300 are provided with a spring.

[0037] It is worth noting that the compression member 300 is matched with the side wall of the cover plate 110.

[0038] Working principle: through setting the pressing part 300 on the top of the fixed seat 200, the connecting line can be matched in the lower groove 240 of the fixed seat 200 when the connecting line of the circuit board 120 and external device is welded, and then the pressing part 300 is clamped on the top of the fixed seat 200 by matching the clamping groove 230, at this time, the pressing plate 320 can be used to match the fixed seat 200 and press on the top of the connecting line, so that the pressing positioning of the connecting line can be realized, the problem of the connecting line shaking and off-welding in long-term use of the connecting line can be avoided, and the long-term use of the grounding effectiveness detection device is beneficial; meanwhile, the moisture absorbing sheet 241 is arranged in the fixed seat 200, and the adhesive tape one 220 and the adhesive tape two 303 outside the pressing part 300 are matched, the adhesive tape one 220 and the adhesive tape two 303 are used to paste and seal the outside of the pressing part 300, so that the pressing part 300 is pressed and matched with the moisture absorbing sheet 241 to absorb moisture in the inside of the pressing part 300, so that the air near the welding position of the connecting line can be absorbed and kept dry, and the inside of the shell 100 can be kept in a dry state, so that the problem of rust and corrosion of the welding position of the connecting line due to excessive moisture can be avoided, and the moisture-proof effect of the grounding effectiveness detection device is improved.

[0039] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or apparatus.

[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A ground effectiveness detection device characterized by comprising: Include: The shell (100) is provided with a cover plate (110) on the top, and a circuit board (120) is arranged inside the shell (100); The fixed seat (200) is fixed to the side wall of the shell (100), and the top of the fixed seat (200) is provided with a clamping groove (230) and a lower groove (240), and the side wall of the fixed seat (200) is provided with a rubber semicircular pipe (210), The outside of the rubber semicircular pipe (210) is provided with a sticky tape (220), and the inside of the fixed seat (200) is provided with a moisture absorption piece (241); The compression part (300) is arranged on the top of the fixed seat (200), the top of the compression part (300) is provided with a sealing film (301) and a sticky tape (303), the bottom of the compression part (300) is provided with a plurality of grooves (302), and the inside of the compression part (300) is provided with a compression plate (320).

2. The ground effectiveness detection apparatus of claim 1, wherein: The side wall of the shell (100) is provided with a fixed sheet (101).

3. The ground effectiveness detection apparatus of claim 1, wherein: The compression part (300) is provided with a limiting block (310) at both ends.

4. The ground effectiveness detection apparatus of claim 1, wherein: The side wall of the rubber semicircular pipe (210) is provided with a connecting strip (211).

5. The ground effectiveness detection apparatus of claim 1, wherein: The bottom of the compression plate (320) is provided with a rubber strip (321).

6. The ground effectiveness detection apparatus of claim 1, wherein: The compression plate (320) and the compression part (300) are provided with a spring.

7. The ground effectiveness detection apparatus of claim 1, wherein: The compression part (300) is matched with the side wall of the cover plate (110).

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