CN215339999U

CN215339999U - Improved electric energy meter

Info

Publication number: CN215339999U
Application number: CN202120711028.1U
Authority: CN
Inventors: 张恒; 唐健; 魏章波; 林国庆
Original assignee: Ningbo Sanxing Medical and Electric Co Ltd
Current assignee: Ningbo Sanxing Electric Co Ltd; Ningbo Sanxing Medical and Electric Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-12-28
Anticipated expiration: 2031-04-07
Also published as: WO2022213500A1; HUP2300383A1

Abstract

The utility model relates to an improved electric energy meter, which comprises a bottom shell, a PCB (printed circuit board) arranged in the bottom shell, a meter cover and an end cover, wherein the meter cover and the end cover are covered on the bottom shell, a key capable of being reset after being pressed down is arranged on the PCB, an ejector column which is used for pressing down the key when the end cover is covered with the bottom shell and is separated from the key when the end cover is opened is arranged on the inner wall of the end cover, and a connecting component which is used for providing resetting force for resetting the key when the end cover is opened is arranged between the key and the ejector column. By adopting the electric energy meter with the design, even if the key reset function fails after the electric energy meter is used for a long time, the lower key can be reset under the action of the connecting component to provide an additional reset force, so that the key is normally reset, and the service life of the anti-electricity-stealing function of the electric energy meter is prolonged.

Description

Improved electric energy meter

Technical Field

The utility model relates to the technical field of electric energy meters, in particular to an improved electric energy meter.

Background

The electric energy meter in the prior art is mainly realized by adopting the following structure, an elastic key is arranged on a PCB (printed Circuit Board) in the electric energy meter, a push column is arranged on an end cover of the electric energy meter, when the end cover is combined with a bottom shell cover of the electric energy meter, the push column penetrates through an upper shell body of the electric energy meter to press down the key, so that a corresponding module of an electricity larceny prevention circuit in the electric energy meter is conducted, a normal working signal is provided for a control module, the push column releases the push action on the key when the end cover is opened, the key is reset, the corresponding module of the electricity larceny prevention circuit is disconnected, an electricity larceny signal is provided for the control module, and the existence of electricity larceny is judged.

However, the structure has a problem that the elastic key is easy to reset after being used for a long time, namely, when an electricity stealing event occurs and the end cover is opened, the electric energy meter cannot send an electricity stealing signal, so that the electricity stealing prevention function of the electric energy meter fails.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, it is an object of the present invention to provide an improved electric energy meter in which a fraudulent use prevention structure can be normally operated even after a long time use.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a modified electric energy meter, includes the drain pan, sets up PCB board in the drain pan, lid and close table lid and the end cover on the drain pan, be provided with the button that can reset after pressing on the PCB board, be equipped with on the end cover inner wall and press the button when end cover and drain pan lid close and with the ejector pin that the button broke away from mutually when the end cover is opened, its characterized in that:

and a connecting assembly which provides resetting force for resetting the key when the end cover is opened is arranged between the key and the ejection column.

Furthermore, the connecting assembly comprises a connecting hole arranged on the key and a connecting column arranged on the ejection column, or comprises a connecting hole arranged on the ejection column and a connecting column arranged on the key;

the connecting column can be inserted into the connecting hole, and the key is driven to reset through the matching effect of the connecting column and the connecting hole when the end cover is opened, and then the connecting column is separated from the connecting hole.

Furthermore, the connecting column is in interference fit with the connecting hole.

Furthermore, a limiting groove is formed in the connecting hole, and a limiting ring which can be clamped in the limiting groove is arranged on the connecting column.

Furthermore, the free end of the connecting column is provided with a first chamfer which is convenient to insert into the connecting hole.

Furthermore, the outer end of the connecting hole is provided with a second chamfer which facilitates the insertion of the connecting column.

Furthermore, a plurality of reinforcing ribs extending along the length direction of the ejection column are arranged on the periphery of the ejection column.

Furthermore, a reinforcing block is arranged at the connecting position of the reinforcing rib and the end cover.

Further, the button includes the button cover, set up at button cover tip and be close to the elasticity of PCB board one side and reset the piece, set up on the elasticity resets the piece when elasticity resets the piece and is pressed with the conducting strip that the corresponding position on the PCB board is linked together and set up on the elasticity resets and can be by the key post that the ejection post pushed up, spliced pole or connecting hole setting are on the key post.

Further, the conducting strip adopts the carbon diaphragm to make, elasticity resets and is made by silica gel.

Compared with the prior art, the utility model has the advantages that: adopt the structural design of this application, under coupling assembling's effect, can realize when opening the table lid, the ejection post can exert an effort of resetting to the button for even the button is under the situation that self reset function became invalid, also can normally reset under the effort of resetting that the ejection post provided, ensures the anti-electricity-stealing function normal work of electric energy meter, thereby ensures the anti-electricity-stealing function of electric energy meter.

Drawings

Fig. 1 is a schematic diagram of an appearance structure of an electric energy meter according to the present application.

Fig. 2 is a schematic diagram of an explosion structure of the electric energy meter according to the present application.

Fig. 3 is a schematic structural diagram of an end cap of an electric energy meter according to the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Fig. 5 is an enlarged schematic view of B in fig. 3.

Fig. 6 is a schematic cross-sectional view of the key, the connecting assembly and the ejection rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 6, which are schematic structural diagrams of a preferred embodiment of the present invention, the improved electric energy meter includes a bottom case 1, a PCB 2 disposed in the bottom case 1, a meter cover 3 covering the bottom case 1, and an end cover 4, wherein the PCB 2 is provided with a push button 5 that can be reset after being pressed, a push pillar 41 that presses the push button 5 when the end cover 4 is covered with the bottom case 1 and separates from the push button 5 when the end cover 4 is opened is disposed on an inner wall of the end cover 4, and a connecting assembly that provides a reset force for resetting the push button 5 when the end cover 4 is opened is disposed between the push button 5 and the push pillar 41. When the end cover 4 is closed, the ejection column 41 ejects the key 5 to press the key 5, the corresponding module of the electricity larceny prevention circuit arranged on the PCB 2 is conducted, a normal working signal without electricity larceny event is provided for the control module of the electric energy meter, when the end cover 4 is opened, a reset external force is provided for the key 5 under the action of the connecting assembly to reset the key 5, namely, the key 5 is separated from the corresponding circuit on the PCB, so that the corresponding module is not conducted, under the design, even if the reset function of the key 5 per se fails, the key 5 can be normally reset under the action of the reset force of the connecting assembly, and therefore, the electricity larceny prevention function of the electric energy meter is effective for a long time.

Specifically, the connecting assembly includes a connecting hole 51 provided on the key 5 and a connecting column 42 provided on the ejection column 41, but of course, the connecting assembly may also be a connecting hole on the ejection column 41 and a connecting column provided on the key (since the difference between this arrangement and the previous structure is that the connecting column and the connecting hole are replaced, and other structures are the same, this arrangement is not shown in the drawings). However, it should be noted that, no matter what arrangement, the connection post 42 can be inserted into the connection hole 51, and when the end cap 4 is opened, the connection post 42 and the connection hole 51 cooperate to drive the key 5 to reset, and then the connection post 42 is separated from the connection hole 51.

As a preferred embodiment, the connection column 42 and the connection hole 51 are connected in an interference fit manner, when the end cap 4 is opened, a large friction force is formed under the interference fit action between the connection column 42 and the connection hole 51, and then the key 5 is driven to reset, and when an external force for opening the end cap 4 is greater than the friction force between the connection column 42 and the connection hole 51, the connection column 42 is separated from the connection hole 51, and the end cap 4 can be smoothly taken down.

As another preferred embodiment, a limiting groove 52 is arranged in the connecting hole 51, and a limiting ring 43 which can be clamped in the limiting groove 52 is arranged on the connecting column 42. When the end cover 4 is opened, a reset force is provided for resetting the key 5 under the action of the limiting ring 43 and the limiting groove 52, and the principle of the reset force is similar to that of interference fit and is not described herein.

It should be noted that, if the connecting column 42 is disposed on the ejection column 41, the connecting column 42 may be the same column as the ejection column 41 (shown in the drawing), may be a column formed at the end of the ejection column 41 with a diameter smaller than that of the ejection column 41, or may be disposed in other forms.

In this embodiment, the free end of the connecting post 42 is provided with a first chamfer 44 to facilitate insertion into the connecting hole 51. Meanwhile, in order to further facilitate the insertion of the connection post 42 into the connection hole 51, the outer end of the connection hole 51 is provided with a second chamfer 53.

In order to improve the stability of the knock-out post 41 and prevent the knock-out, a plurality of ribs 45 extending in the longitudinal direction of the knock-out post 41 are provided around the knock-out post 41. Preferably, in order to further improve the stability of the ejector pin 41, a reinforcing block 46 is provided at a connecting position of the reinforcing rib 45 and the end cover 4.

In this embodiment, the key 5 includes a key cover 54, an elastic reset member 55 disposed at an end of the key cover 54 and close to one side of the PCB 2, a conductive sheet 56 disposed on the elastic reset member 55 and communicating with a corresponding position on the PCB 2 when the elastic reset member 55 is pressed, and a key post 57 disposed on the elastic reset member 55 and capable of being pushed by the pushing post 41, wherein a connection post or a connection hole 51 on the key 5 is disposed on the key post 57, it should be noted that, if the key post 57 is provided with a connection post, the connection post may be the same cylinder as the key post 57, or a cylinder formed at an end of the key post 57 and having a diameter smaller than that of the key post 57, or be in other forms.

Preferably, the conductive plate 56 is made of a carbon membrane, and the elastic restoring member 55 is made of silicon. Specifically, the elastic reset piece 55 is a cone made of a silicone material, the diameter of one end close to the PCB 2 is larger than the diameter of one end far away from the PCB 2, and the conducting strip 56 is arranged at one end of the elastic reset piece 55 far away from the PCB 2. Of course, the elastic return member 55 may be a return spring or the like. The key sleeve 54 of the present application may also be made of a silicone material.

While embodiments of the 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 to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a modified electric energy meter, includes drain pan (1), sets up PCB board (2) in drain pan (1), lid and closes table lid (3) and end cover (4) on drain pan (1), be provided with on PCB board (2) and push down button (5) that can reset after pressing, be equipped with on end cover (4) inner wall and press button (5) down and push away fore-set (41) that break away from mutually with button (5) when end cover (4) are opened with drain pan (1) when end cover (4) are covered, its characterized in that:

and a connecting assembly which provides resetting force for resetting the key (5) when the end cover (4) is opened is arranged between the key (5) and the ejection column (41).

2. The improved electric energy meter of claim 1, wherein:

the connecting assembly comprises a connecting hole (51) arranged on the key (5) and a connecting column (42) arranged on the ejection column (41), or comprises a connecting hole arranged on the ejection column (41) and a connecting column arranged on the key;

the connecting column (42) can be inserted into the connecting hole (51), and when the end cover (4) is opened, the key (5) is driven to reset through the matching effect of the connecting column (42) and the connecting hole (51), and then the connecting column is separated from the connecting hole (51).

3. The improved electric energy meter of claim 2, wherein:

the connecting column (42) is in interference fit with the connecting hole (51).

4. The improved electric energy meter of claim 2, wherein:

a limiting groove (52) is formed in the connecting hole (51), and a limiting ring (43) which can be clamped in the limiting groove (52) is arranged on the connecting column (42).

5. The improved electrical energy meter of any of claims 3 or 4, wherein:

the free end of the connecting column (42) is provided with a first chamfer (44) which is convenient to insert into the connecting hole (51).

6. The improved electric energy meter of claim 5, wherein:

and a second chamfer (53) which is convenient for the insertion of the connecting column (42) is arranged at the outer end of the connecting hole (51).

7. The improved electric energy meter of claim 1, wherein:

and a plurality of reinforcing ribs (45) extending along the length direction of the ejection column (41) are arranged on the periphery of the ejection column (41).

8. The improved electric energy meter of claim 7, wherein:

and a reinforcing block (46) is arranged at the connecting position of the reinforcing rib (45) and the end cover (4).

9. The improved electric energy meter of claim 2, wherein:

the button (5) includes button cover (54), set up at button cover (54) tip and be close to elasticity reset piece (55) of PCB board (2) one side, set up on elasticity reset piece (55) when elasticity reset piece (55) is pressed with conducting strip (56) that the corresponding position on PCB board (2) is linked together and set up on elasticity reset piece (55) and can be by the key post (57) that push up of ejector pin (41), spliced pole or connecting hole (51) set up on key post (57).

10. The improved electric energy meter of claim 9, wherein:

the conducting strip (56) is made of a carbon membrane, and the elastic resetting piece (55) is made of silica gel.