CN210347731U

CN210347731U - Electric energy meter with keyboard support

Info

Publication number: CN210347731U
Application number: CN201920376321.XU
Authority: CN
Inventors: 孟遥; 张宇航; 郑哲
Original assignee: Ningbo Sanxing Electric Co Ltd
Current assignee: Ningbo Sanxing Electric Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-04-17
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to an electric energy meter with keyboard support, including the PCB board, its characterized in that: the keyboard support is detachably mounted on the PCB, a socket electrically connected with the PCB is further mounted on the PCB, and the output end of the FPC keyboard is connected with the socket on the PCB in an inserting mode. Compared with the prior art, the utility model has the advantages of: a space for installing other electronic devices is arranged below the keyboard bracket, so that the space utilization rate of the PCB is improved; the FPC keyboard can effectively prevent the influence of the external environment when the silica gel keys are damaged, has higher reliability, is connected with the PCB board in a plugging mode and is convenient to install and disassemble.

Description

Electric energy meter with keyboard support

Technical Field

The utility model relates to an electric energy meter field, in particular to electric energy meter with keyboard support.

Background

At present, key-type prepayment meters at home and abroad generally use a combined keyboard of carbon film keys and silica gel keys, but the adoption of the keyboard has the following problems: 1. the carbon film keys occupy more space, and the positions of the keys forbid the layout of plug-in components and through hole wiring, so that the space utilization rate of the PCB is reduced; 2. the carbon film key is influenced by the process, has unstable high temperature and high humidity resistance and can not meet the requirement of the electric energy meter; 3. the carbon film key is exposed in the internal environment of the electric energy meter, and factors such as foreign matters, moisture and the like in the electric energy meter easily cause key misoperation; 4. after the silica gel key is damaged, the internal environment of the electric energy meter is the same as the external environment, and the dustproof and waterproof characteristics of the key are damaged.

There is also a keyboard structure using keys, a PCB board and a connector connecting the PCB board and the electric energy meter, if the chinese utility model patent with application number cn201621156621.x (the publication number is CN206114735U) discloses a keyboard structure and a three-phase intelligent prepaid electric energy meter with the same, wherein the keyboard structure includes: a PCB board; the key is arranged on the PCB and is electrically connected with the PCB; the pin structure is arranged on the PCB, and the socket structure is electrically connected with the main PCB arranged in the base table and is opposite to the opening arranged on the shell; the PCB is electrically connected with the base meter in a mode that the pin structure is matched with the socket structure for insertion. However, the keyboard adopts the PCB and is also provided with a protection structure for protecting the PCB, so that the whole keyboard is large and the area required by the keyboard arranged on the PCB of the electric energy meter is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a PCB board space utilization height and simple structure's electric energy meter with keyboard support.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an electric energy meter with keyboard support, includes the PCB board, its characterized in that: the keyboard support is detachably mounted on the PCB, a socket electrically connected with the PCB is further mounted on the PCB, and the output end of the FPC keyboard is connected with the socket on the PCB in an inserting mode.

As an improvement, the output end of the FPC keyboard is connected with a plug through a flexible flat cable, and the plug is matched with a socket on a PCB.

Specifically, the lower extreme of plug is equipped with a plurality of first contact pins, the upper end of socket seted up with first contact pin matched with jack.

In the scheme, the lower end of the socket is provided with a second contact pin, the first contact pin is conducted with one end of the second contact pin when inserted into the jack, and the other end of the second contact pin is electrically connected with the PCB.

Further, be equipped with the chamber that holds that is used for placing the FPC keyboard on the keyboard support, the FPC keyboard is fixed in holding the intracavity through 3M glues.

Preferably, the FPC keyboard is a film keyboard.

As an improvement, one side of the keyboard support is provided with a guide hole for keeping the flexible flat cable downward, and the flexible flat cable penetrates through the guide hole.

Furthermore, the keyboard support is provided with a first support piece extending downwards, the bottom of the first support piece is provided with an elastic clamping pin extending downwards, and the PCB is provided with a mounting hole matched with the elastic clamping pin.

Preferably, the number of the first supports is two. The keyboard bracket is fixed on a PCB of the electric energy meter through the first supporting piece.

Furthermore, a second support piece extending downwards is further arranged on the keyboard support, a positioning column extending downwards is arranged at the bottom of the second support piece, a positioning hole for the positioning column to penetrate through is formed in the PCB, and the bottom of the second support piece is abutted against the surface of the PCB in an assembly completion state. The keyboard support is fixed on the PCB in a balanced mode through the first supporting piece and the second supporting piece, and other electrical parts can be placed below the keyboard support, so that the space utilization rate of the PCB is improved.

Compared with the prior art, the utility model has the advantages of: the keyboard support is arranged on the PCB, and a space for installing other electronic devices is arranged below the keyboard support, so that the space utilization rate of the PCB is improved; the FPC key is connected with the PCB in an inserting mode, so that the installation and the disassembly are convenient; and the keyboard is the FPC keyboard, and the weight of this keyboard is light, and thickness is thin, can effectively prevent that external environment from to the influence of keyboard when the silica gel button damages among the prior art, has higher reliability. Therefore, the electric energy meter has reliable functions, the occupied area of the PCB is small, and the flexibility of the overall layout of the PCB is improved.

Drawings

Fig. 1 is a schematic view illustrating an installation of a keyboard holder and a keyboard according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the installation of the keyboard, the keyboard support and the PCB board in the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-2, an electric energy meter with a keyboard support, especially suitable for an intelligent prepayment electric energy meter, includes a PCB board 1, an FPC keyboard 2, a keyboard support 3, and other electronic devices in the existing electric energy meter, the keyboard support 3 is detachably mounted on the PCB board 1, the FPC keyboard 2 is mounted on the keyboard support 3, wherein the FPC keyboard 2 is made of an FPC key board, the FPC key board is a printed circuit made of a flexible insulating base material, can be bent and flexed arbitrarily, and has the characteristics of light weight and thin thickness; the PCB board 1 is also provided with a socket 6 which is electrically connected with the PCB board 1, and the output end of the FPC keyboard 2 is connected with the socket 6 on the PCB board 1 in a plugging mode. In this embodiment, the FPC keyboard 2 is a film keyboard, the keyboard includes an FPC key sheet, and a film is sealed on an outer layer of the FPC key sheet, so that the FPC key sheet can be effectively prevented from being interfered by an external environment.

In the scheme, the FPC keyboard 2 is connected with a plug 5 through a flexible flat cable 4, and the plug 5 is matched with a socket 6 on the PCB 1. Specifically, the lower end of the plug 5 is provided with a plurality of first pins 51, and the upper end of the socket 6 is provided with jacks matched with the first pins 51; the lower end of the socket 6 is provided with a second pin 61, the first pin 51 is connected with one end of the second pin 61 when inserted into the jack, and the other end of the second pin 61 is electrically connected with the PCB board 1. In the embodiment, the socket 6 is a 7-pin socket in the JP4 model, so that the technical requirements of wave-soldering plug-in units are met, the socket 6 is welded on the PCB board 1, and the second contact pin is connected with the MCU of the electric energy meter, so that the FPC keyboard 2 is connected with the MCU of the electric energy meter; and can install socket 6 at the lower extreme of keyboard support 3, also can set up other electron device at the lower extreme of keyboard support 3, improve the space utilization of PCB board.

Be equipped with the chamber that holds that is used for placing FPC keyboard 2 on the keyboard support 3, FPC keyboard 2 glues through 3M and fixes in holding the intracavity.

One side of the keyboard bracket 3 is provided with a guide hole 31 for keeping the flexible flat cable 4 downward, and the flexible flat cable 4 is arranged in the guide hole 31 in a penetrating way. The flat cable 4 is held downward by the guide hole 31, and the plug 5 and the socket 6 are easily mounted.

The keyboard support 3 has a first support member 32 extending downward, the bottom of the first support member 32 has an elastic clip 321 extending downward, the bottom of the first support member 32 also has a pillar 322 extending downward, an opening 323 is formed between the elastic clip 321 and the pillar 322 from the bottom of the first support member 32, the elastic clip 321 is formed through the opening 323, the PCB board 1 is provided with mounting holes matching with the elastic clip 321, in this embodiment, two first support members 32 are provided, and are respectively provided on two diagonal lines of the keyboard support 3. In addition, the keyboard support 3 further has a second support 33 extending downward, the bottom of the second support 33 has a positioning post 331 extending downward, the PCB 1 is provided with a positioning hole for the positioning post 331 to pass through, and in the assembled state, the bottom of the second support 33 abuts against the surface of the PCB 1.

When the electric energy meter is used, the keyboard 2 is arranged on the keyboard support 3, the keyboard support 3 is arranged on the PCB 1 of the electric energy meter, and other electronic devices can be arranged below the keyboard support 3, so that the space utilization rate of the PCB 1 is improved; in addition, the keyboard 2 adopts an FPC keyboard, so that the reliability of keys is improved; and the FPC keyboard output end is inserted with the socket 6 installed on the PCB board 1 through the plug 5, and the second contact pin at the other end of the socket 6 is connected with the MCU of the electric energy meter, so that the space utilization rate of the PCB board of the electric energy meter is high, and the installation and the disassembly are convenient.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an electric energy meter with keyboard support, includes the PCB board, its characterized in that: the keyboard support is detachably mounted on the PCB, a socket electrically connected with the PCB is further mounted on the PCB, and the output end of the FPC keyboard is connected with the socket on the PCB in an inserting mode.

2. The electric energy meter with the keyboard support according to claim 1, wherein: the output end of the FPC keyboard is connected with a plug through a flexible flat cable, and the plug is matched with a socket on the PCB.

3. The electric energy meter with the keyboard support according to claim 2, wherein: the lower extreme of plug is equipped with a plurality of first contact pins, the upper end of socket seted up with first contact pin matched with jack.

4. The electric energy meter with the keyboard support according to claim 3, wherein: the lower end of the socket is provided with a second contact pin, the first contact pin is conducted with one end of the second contact pin when inserted into the socket, and the other end of the second contact pin is electrically connected with the PCB.

5. The electric energy meter with the keyboard support according to claim 1, wherein: the keyboard support is provided with a containing cavity for placing an FPC keyboard, and the FPC keyboard is fixed in the containing cavity through 3M glue.

6. The electric energy meter with the keyboard support according to claim 2 or 5, wherein: the FPC keyboard is a film keyboard.

7. The electric energy meter with the keyboard support according to claim 5, wherein: one side of the keyboard support is provided with a guide hole for keeping the flexible flat cable downward, and the flexible flat cable penetrates through the guide hole.

8. The electric energy meter with the keyboard support according to claim 1 or 7, wherein: the keyboard support is provided with a first support piece extending downwards, the bottom of the first support piece is provided with an elastic clamping pin extending downwards, and the PCB is provided with a mounting hole matched with the elastic clamping pin.

9. The electric energy meter with the keyboard support according to claim 8, wherein: the number of the first supporting pieces is two.

10. The electric energy meter with the keyboard support according to claim 8, wherein: the keyboard support is further provided with a second supporting piece extending downwards, the bottom of the second supporting piece is provided with a positioning column extending downwards, the PCB is provided with a positioning hole for the positioning column to penetrate through, and the bottom of the second supporting piece is abutted against the surface of the PCB in an assembly completion state.