CN210487838U - Anti-static electricity meter - Google Patents
Anti-static electricity meter Download PDFInfo
- Publication number
- CN210487838U CN210487838U CN201920923413.5U CN201920923413U CN210487838U CN 210487838 U CN210487838 U CN 210487838U CN 201920923413 U CN201920923413 U CN 201920923413U CN 210487838 U CN210487838 U CN 210487838U
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- static
- pcb
- key switch
- electricity meter
- shell
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- Switch Cases, Indication, And Locking (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The utility model discloses an anti-static electricity meter, which comprises a shell, wherein a PCB is arranged in the shell, a key switch is arranged on the PCB, and a stratum is arranged on the PCB; the key switch comprises a main body and a metal shell arranged outside the main body, wherein the metal shell is electrically connected with the ground layer. The utility model provides a prevent static ammeter when having high-voltage static on the casing, static at first can contact key switch's metal casing to through the leading-in stratum on the PCB board of metal casing, thereby prevent that high-voltage static from causing the damage to circuit and electron device, played the electrostatic protection effect, realized preventing the effect of static, do benefit to the guarantee user property safety.
Description
Technical Field
The utility model relates to an electric energy meter technical field especially relates to an anti-static electricity meter.
Background
The electric meter is called electric energy meter for short, and is also called watt-hour meter, fire meter, kilowatt-hour meter, etc. for measuring electric energy. The ammeter is installed by every family, so the application basis of the ammeter is very extensive.
The high-voltage static electricity on the shell of the ammeter has great harm to electronic devices inside the ammeter, and the ammeter is easy to crash, reset and even damaged. Therefore, there is a need for an antistatic electricity meter.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: an antistatic electricity meter is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: an anti-static electricity meter comprises a shell, wherein a PCB is arranged in the shell, a key switch is arranged on the PCB, and a stratum is arranged on the PCB; the key switch comprises a main body and a metal shell arranged outside the main body, wherein the metal shell is electrically connected with the ground layer.
Further, the metal housing includes a ground pin soldered to the ground layer.
Further, the key switch is a five-foot touch switch.
Further, the stratum is a copper-paved line.
Further, the ground layer is electrically connected with a live terminal on the shell.
The beneficial effects of the utility model reside in that: when high-voltage static electricity exists on the shell, the static electricity firstly contacts the metal shell of the key switch and is led into the stratum on the PCB through the metal shell, so that the circuit and the electronic device are prevented from being damaged by the high-voltage static electricity, the static protection effect is achieved, the static prevention effect is realized, and the property safety of a user is favorably ensured.
Drawings
Fig. 1 is a schematic structural view of a PCB board in an anti-static electricity meter according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a key switch in an anti-static electricity meter according to an embodiment of the present invention.
Description of reference numerals:
1. a PCB board;
2. a key switch;
3. an earth formation;
4. a metal housing;
5. a ground pin;
6. and a live wire binding post.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the key switch on the PCB is provided with a metal shell, and the PCB is provided with a stratum which is electrically connected with the metal shell.
Referring to fig. 1 and 2, an anti-static electricity meter comprises a housing, wherein a PCB (printed circuit board) 1 is arranged in the housing, a key switch 2 is arranged on the PCB 1, and a ground layer 3 is arranged on the PCB 1; the key switch 2 comprises a main body and a metal shell 4 arranged outside the main body, wherein the metal shell 4 is electrically connected with the ground layer 3.
From the above description, the beneficial effects of the present invention are: when high-voltage static electricity exists on the shell, the static electricity firstly contacts the metal shell of the key switch and is led into the stratum on the PCB through the metal shell, so that the circuit and the electronic device are prevented from being damaged by the high-voltage static electricity, the static protection effect is achieved, the static prevention effect is realized, and the property safety of a user is favorably ensured.
Further, the metal housing 4 includes a ground pin 5 soldered to the ground layer 3.
As can be seen from the above description, the metal casing is stably connected with the ground.
Further, the key switch 2 is a five-foot tact switch.
As can be seen from the above description, the key switch can adopt standard components, which is beneficial to controlling the manufacturing cost of the electric meter.
Further, the stratum 3 is a copper-laid circuit.
Further, the ground layer 3 is electrically connected to a live terminal 6 on the housing.
As can be seen from the above description, static electricity can be derived from the electricity meter in a timely manner.
Example one
Referring to fig. 1 and fig. 2, a first embodiment of the present invention is: an anti-static electricity meter comprises a shell, wherein a PCB (printed circuit board) 1 is arranged in the shell, a key switch 2 is arranged on the PCB 1, and a stratum 3 is arranged on the PCB 1; the key switch 2 comprises a main body and a metal shell 4 arranged outside the main body, wherein the metal shell 4 is electrically connected with the ground layer 3, and in detail, the metal shell 4 comprises a grounding pin 5 welded with the ground layer 3.
In this embodiment, the key switch 2 is a five-foot tact switch; the stratum 3 is a copper-laid circuit.
Further, stratum 3 is connected with live wire terminal 6 electricity on the casing, so, static can let out into the electric wire netting by live wire terminal 6 to avoid static to cause the influence to the components and parts on PCB board 1, do benefit to the job stabilization nature who guarantees the ammeter.
To sum up, the utility model provides a prevent static ammeter when having high-voltage static on the casing, static at first can contact key switch's metal casing to through metal casing, the stratum on the PCB board and the leading-in electric wire netting of live wire terminal that couples with it prevent that high-voltage static from causing the damage to circuit and electron device, played the electrostatic protection effect, realized preventing the effect of static, do benefit to the security of guarantee user property.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. The utility model provides an antistatic ammeter, includes the casing, is equipped with the PCB board in the casing, be equipped with key switch on the PCB board, its characterized in that: the PCB is provided with a stratum; the key switch comprises a main body and a metal shell arranged outside the main body, wherein the metal shell is electrically connected with the ground layer.
2. The antistatic electricity meter of claim 1, wherein: the metal housing includes a ground pin soldered to the ground layer.
3. The antistatic electricity meter of claim 2, wherein: the key switch is a five-foot touch switch.
4. The antistatic electricity meter of claim 1, wherein: the stratum is a copper-laid circuit.
5. The antistatic electricity meter of claim 1, wherein: the ground layer is electrically connected to a live terminal on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923413.5U CN210487838U (en) | 2019-06-18 | 2019-06-18 | Anti-static electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923413.5U CN210487838U (en) | 2019-06-18 | 2019-06-18 | Anti-static electricity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210487838U true CN210487838U (en) | 2020-05-08 |
Family
ID=70514129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923413.5U Active CN210487838U (en) | 2019-06-18 | 2019-06-18 | Anti-static electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210487838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343434A (en) * | 2020-09-17 | 2021-02-09 | 温州大学乐清工业研究院 | Electrostatic discharge structure and method of intelligent electronic lock |
-
2019
- 2019-06-18 CN CN201920923413.5U patent/CN210487838U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343434A (en) * | 2020-09-17 | 2021-02-09 | 温州大学乐清工业研究院 | Electrostatic discharge structure and method of intelligent electronic lock |
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