CN220120892U

CN220120892U - Anti-interference voltmeter

Info

Publication number: CN220120892U
Application number: CN202321616667.5U
Authority: CN
Inventors: 林富
Original assignee: Zhejiang Qiaoyu Electric Co ltd
Current assignee: Zhejiang Qiaoyu Electric Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-12-01
Anticipated expiration: 2033-06-25

Abstract

The utility model relates to the technical field of voltmeters and discloses an anti-interference voltmeter, which comprises a base, wherein a first shielding metal net is arranged on the inner wall of the base, a first antistatic layer is arranged on the inner wall of the first shielding metal net, a voltmeter body is arranged in the first antistatic layer, a shell is arranged on the periphery of the upper end of the base, fastening knobs are arranged at the lower ends of two side walls of the shell, a second shielding metal net is arranged on the inner wall of the shell, a second antistatic layer is arranged on the inner wall of the second shielding metal net, a display screen is embedded in one side wall of the voltmeter body, and by arranging the base, the shell, the first shielding metal net, the second shielding metal net, the first antistatic layer and the second antistatic layer, external electric signals or other signals can be effectively prevented from interfering the voltmeter, and the voltmeter can be shielded and protected against interference.

Description

Anti-interference voltmeter

Technical Field

The utility model belongs to the technical field of voltmeters, and particularly relates to an anti-interference voltmeter.

Background

The voltmeter is an instrument for measuring voltage, and is composed of a permanent magnet, a coil, and the like. The voltmeter is a quite large resistor, is ideally considered to be open-circuit, and the digital display voltmeter is an instrument which converts a measured voltage value into a digital form by using an analog-to-digital converter and indicates the digital form, and is suitable for being used at the ambient temperature of 0-50 ℃ and the humidity of less than 85%.

In a digital display voltmeter disclosed in patent publication number CN218099350U, the voltmeter lacks a shielding anti-interference structure, is easily interfered by external electric signals or other signals, and affects measurement accuracy, so that an anti-interference voltmeter is provided.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the anti-interference voltmeter, which effectively solves the problem that the existing voltmeter is easy to be interfered by external electric signals or other signals to influence the measurement accuracy.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an anti-interference voltmeter, includes the base, be provided with first shielding metal mesh on the base inner wall, be provided with first antistatic layer on the first shielding metal mesh inner wall, be provided with the voltmeter body in the first antistatic layer, base upper end periphery is provided with the shell, shell both sides wall lower extreme all is provided with the fastening knob, be provided with the second shielding metal mesh on the shell inner wall, be provided with the second antistatic layer on the second shielding metal mesh inner wall, it has the display screen to inlay on the voltmeter body lateral wall, be located the display screen below be provided with inside control knob on the voltmeter body lateral wall, inside control knob one side is provided with the control button, be located the shell corresponds be provided with the transparent window on the lateral wall of display screen position, the control button periphery is provided with outside control knob, is located the shell corresponds be provided with the film button on the lateral wall of control button position, be located one side above the fastening knob be connected with the terminal box through the screw on the shell lateral wall.

Preferably, the first shielding metal mesh is glued to the inner wall of the base, the first antistatic layer is glued to the inner wall of the first shielding metal mesh, and the voltmeter body is connected with the first antistatic layer through a clamping groove.

Preferably, the fastening knob penetrates through one end of the side wall of the shell and is connected with the side wall of the base through threads, the second shielding metal net is glued with the inner wall of the shell, and the second antistatic layer is glued with the inner wall of the second shielding metal net.

Preferably, the internal control knob is rotationally connected with the sidewall of the voltmeter body, and the control key is embedded on the sidewall of the voltmeter body.

Preferably, the external control knob is connected with the internal control knob through a key, the external control knob is rotationally connected with the side wall of the shell, and the film key is welded with the side wall of the shell.

Preferably, the inner wall of the lower end of the shell is in sliding connection with the outer wall of the upper end of the base.

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

in the high-shielding anti-interference voltmeter, the base, the shell, the first shielding metal net, the second shielding metal net, the first anti-static layer and the second anti-static layer are arranged, so that the voltmeter can be effectively prevented from being interfered by external electric signals or other signals, and shielded and anti-interference protected, and the problem that the measurement accuracy is affected due to the fact that the existing voltmeter is easily interfered by the external electric signals or other signals is solved; in addition, the external control knob can be directly pulled down when the voltmeter is maintained, the fastening knob is detached, and the shell and the base can be conveniently disassembled and assembled, so that the voltmeter body can be maintained.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

FIG. 3 is a side cross-sectional view of the present utility model;

in the figure: 1. a base; 2. a first shielding metal mesh; 3. a first antistatic layer; 4. a voltmeter body; 5. a housing; 6. fastening a knob; 7. a second shielding metal mesh; 8. a second antistatic layer; 9. a display screen; 10. an internal control knob; 11. a control key; 12. a transparent window; 13. an external control knob; 14. a film key; 15. and a junction box.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In this embodiment, as shown in fig. 1 to 3, the present utility model includes a base 1, a first shielding metal mesh 2 is disposed on an inner wall of the base 1, a first antistatic layer 3 is disposed on an inner wall of the first shielding metal mesh 2, a voltmeter body 4 is disposed in the first antistatic layer 3, a housing 5 is disposed on an outer periphery of an upper end of the base 1, fastening knobs 6 are disposed at lower ends of two side walls of the housing 5, a second shielding metal mesh 7 is disposed on an inner wall of the housing 5, a second antistatic layer 8 is disposed on an inner wall of the second shielding metal mesh 7, a display screen 9 is embedded on a side wall of the voltmeter body 4, an internal control knob 10 is disposed on a side wall of the voltmeter body 4 below the display screen 9, a control button 11 is disposed on one side of the internal control knob 10, a transparent window 12 is disposed on a side wall of the housing 5 corresponding to the display screen 9, an external control knob 13 is disposed on a periphery of the control button 11, a film button 14 is disposed on a side wall of the housing 5 located above the fastening knob 6, a junction box 15 is connected to a junction box 4 through screws, and the junction box body 4 can be connected to an external device or a circuit to be tested through the junction box 15.

The first shielding metal mesh 2 is glued to the inner wall of the base 1, the first antistatic layer 3 is glued to the inner wall of the first shielding metal mesh 2, the voltmeter body 4 is connected with the first antistatic layer 3 through a clamping groove, the junction box 15 is electrically connected with the voltmeter body 4, the fastening knob 6 penetrates through one end of the side wall of the shell 5 and is connected with the side wall of the base 1 through threads, the shell 5 and the base 1 are connected with each other through the fastening knob 6 more stably, the second shielding metal mesh 7 is glued to the inner wall of the shell 5, the second antistatic layer 8 is glued to the inner wall of the second shielding metal mesh 7, the first metal shielding mesh and the second metal shielding mesh can shield external signals, the external signals or other signals are prevented from interfering with the voltmeter body 4, and the first antistatic layer 3 and the second antistatic layer 8 can conduct antistatic protection on the voltmeter body 4.

Wherein, inside control knob 10 rotates with voltmeter body 4 lateral wall to be connected, control button 11 is embedded on voltmeter body 4 lateral wall, outside control knob 13 passes through key connection with inside control knob 10, outside control knob 13 rotates with shell 5 lateral wall to be connected, film button 14 welds with shell 5 lateral wall, can be convenient through inside control knob 10 on the rotatory voltmeter body 4 of outside control knob 13, can press the control button 11 on the voltmeter body 4 through film button 14, can be convenient like this controls voltmeter body 4, shell 5 lower extreme inner wall and the outer wall sliding connection of base 1 upper end, shell 5 and the dismouting that base 1 can be convenient.

Working principle: the voltmeter body 4 is wrapped by the shell 5 and the base 1, the voltmeter body 4 can be protected, the first metal shielding net and the second metal shielding net can be used for shielding external signals, the external electric signals or other signals are prevented from interfering with the voltmeter body 4, the first antistatic layer 3 and the second antistatic layer 8 can be used for protecting the voltmeter body 4 against static electricity, the voltmeter body 4 can be connected with external tested equipment or circuits through the junction box 15, the internal control knob 10 on the voltmeter body 4 can be conveniently rotated through the external control knob 13, the control key 11 on the voltmeter body 4 can be conveniently pressed through the film key 14, the voltmeter body 4 can be conveniently controlled, the external control knob 13 can be directly pulled down, and after the fastening knob 6 is detached, the shell 5 and the base 1 can be conveniently disassembled, so that the voltmeter body 4 can be maintained.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-interference voltmeter, includes base (1), its characterized in that: the utility model discloses a novel anti-static electricity meter, including base (1) and film, be provided with first shielding metal mesh (2) on the inner wall of base (1), be provided with first antistatic layer (3) on the inner wall of first shielding metal mesh (2), be provided with voltmeter body (4) in first antistatic layer (3), base (1) upper end periphery is provided with shell (5), shell (5) both sides wall lower extreme all is provided with fastening knob (6), be provided with second shielding metal mesh (7) on shell (5) inner wall, be provided with second antistatic layer (8) on second shielding metal mesh (7) inner wall, be provided with display screen (9) on a lateral wall of voltmeter body (4) that is located display screen (9) below be provided with inside control knob (10) on the lateral wall of voltmeter body (4), inside control knob (10) one side is provided with control button (11), be located on the lateral wall of shell (5) corresponding to display screen (9) position is provided with transparent window (12), control button (11) are located outside control button (11) are located on the lateral wall of shell (5) position corresponding to control button (13), and a junction box (15) is connected to the side wall of the shell (5) on one side above the fastening knob (6) through a screw.

2. An anti-tamper voltmeter as defined in claim 1, wherein: the first shielding metal net (2) is glued with the inner wall of the base (1), the first antistatic layer (3) is glued with the inner wall of the first shielding metal net (2), and the voltmeter body (4) is connected with the first antistatic layer (3) through a clamping groove.

3. An anti-tamper voltmeter as defined in claim 1, wherein: the fastening knob (6) penetrates through one end of the side wall of the shell (5) and is connected with the side wall of the base (1) through threads, the second shielding metal net (7) is glued with the inner wall of the shell (5), and the second antistatic layer (8) is glued with the inner wall of the second shielding metal net (7).

4. An anti-tamper voltmeter as defined in claim 1, wherein: the internal control knob (10) is rotationally connected with the side wall of the voltmeter body (4), and the control key (11) is embedded on the side wall of the voltmeter body (4).

5. An anti-tamper voltmeter as defined in claim 1, wherein: the external control knob (13) is connected with the internal control knob (10) through a key, the external control knob (13) is rotationally connected with the side wall of the shell (5), and the film button (14) is welded with the side wall of the shell (5).

6. An anti-tamper voltmeter as defined in claim 1, wherein: the inner wall of the lower end of the shell (5) is in sliding connection with the outer wall of the upper end of the base (1).