Electric energy meter with lead sealing structure

Abstract

The invention discloses an electric energy meter with a lead sealing structure, which comprises a box body and a meter cover arranged on the box body, and a programming button is arranged on the meter cover; the electric energy meter further comprises a lead sealing structure. The lead sealing structure is rotationally arranged on the meter cover, and the lead sealing structure is provided with a limiting part used for limiting downward movement of the programming button; in a closed state, the limiting part limits downward movement of the programming button; in the opening state, the lead sealing structure rotates to enable the lead sealing structure and the programming button to be separated from the limiting state, and the programming button can be pressed down. Compared with the prior art, the structure design is reasonable, the programming button cannot be pressed in a closed state, so that the condition of misoperation is prevented, and the reliability is improved.

Description

Technical Field

[0001] The present invention relates to the field of electric meters, and in particular to an electric energy meter with a lead seal structure. Background Art

[0002] An electric energy meter is an instrument used to measure electrical energy, also known as an electric meter, fire meter, or kilowatt-hour meter. It refers to an instrument that measures various electrical quantities.

[0003] Currently, a programming button is usually provided on the cover of the electricity meter. The programming button includes a button cap and a button shaft. The lower end of the button shaft is electrically connected to a PCB board set inside the electricity meter. The staff can press the programming button to program the electricity meter to modify and set the relevant metering parameters inside the electricity meter.

[0004] Typically, a through-hole for installing a programming button is provided on the cover of an electricity meter. For example, the Chinese utility model patent "Single-Phase Local Fee Control Intelligent Electricity Meter Housing" with patent number CN201120112886.0 (authorization announcement number CN202057699U) has a programming button and a wheel display button on the cover of the electricity meter. Although the programming button has been installed, it needs to be sealed with lead after installation. In the sealed state, the programming button can still be partially rotated, causing it to be partially depressed, which can easily lead to misoperation of the programming button. Consequently, during long-term use, the reliability of the internal parameters of the electricity meter cannot be guaranteed, posing certain safety risks.

[0005] Therefore, it is necessary to further improve the seal structure of the programming button of the existing electric energy meter. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an electric energy meter that prevents misoperation of the programming button when it is in the closed state, thereby improving the reliability, in response to the above technical status quo.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an electric energy meter with a lead seal structure, comprising a box body and a meter cover provided on the box body, wherein the meter cover is provided with a programming button; the characteristics are:

[0008] The electric energy meter also includes:

[0009] A lead seal structure is rotatably mounted on the watch cover, wherein the lead seal structure has a limit portion for limiting downward movement of the programming button;

[0010] In the closed state, the limiter restricts the downward movement of the programming button;

[0011] In the open state, the seal structure rotates to release the seal structure and the programming button from the restricted state, so that the programming button can be pressed down.

[0012] In order to keep the lead seal structure in a closed state and prevent misoperation, preferably, the lead seal structure includes:

[0013] A lead seal having a lead sealing hole and rotatably mounted on the watch cover, wherein an end of the lead seal has a limit portion for limiting downward movement of the programming button;

[0014] The locking piece is arranged in the lead seal hole and is used to limit the rotation of the lead seal piece.

[0015] In order to assemble the lead seal structure, preferably, the lead seal is provided with an elastic block, and correspondingly, the cover has a guide groove for accommodating the elastic block; the elastic block is movable in the guide groove. When the lead seal is rotated, the elastic block moves in the guide groove.

[0016] In order to facilitate the rotation of the lead seal, preferably, the lead seal includes:

[0017] A lead seal column is rotatably mounted on the cover, one end of which has a limiting portion, and the elastic block is mounted on the peripheral wall of the lead seal column;

[0018] The handshake part is located at the other end of the seal column.

[0019] To ensure accurate rotation of the seal and enhance user comfort, the grip portion is preferably provided with a raised reminder post on the side closest to the watch cover. Correspondingly, the mounting portion has a first step that abuts the grip portion, and the grip portion rotates to drive the reminder post over the first step. When the reminder post passes over the first step, the grip portion vibrates due to the collision between the reminder post and the first step. The user can sense this vibration and confirm that the seal is in place.

[0020] Preferably, the side surface of the watch cover has a mounting portion protruding outward, the mounting portion has a mounting hole, and the lead seal column is rotatably mounted in the mounting hole.

[0021] To facilitate assembly, preferably, a raised extension portion is provided at the bottom end of the side wall of the handshake portion, the top end of the extension portion is an arc surface and is located at the bottom of the mounting portion, and correspondingly, the bottom end of the mounting portion is an arc surface.

[0022] Preferably, the mounting portion has a second step, and the elastic block abuts against the second step when located in the guide groove. The elastic block abuts against the second step, thereby being confined within the guide groove and preventing it from detaching from the cover. Furthermore, the top of the guide groove is open to the outside world. To remove the seal, a rod-shaped or hook-shaped tool can be inserted through the opening into the guide groove to disengage the elastic block from the second step, thereby removing the seal.

[0023] In order to separate the limiting portion from the programming button when the seal column rotates, the limiting portion is preferably fan-shaped, with the center of the arc surface of the fan-shaped portion located on the axis of the seal column. The limiting portion can also be in the shape of a bump or the like.

[0024] Preferably, the programming button includes an end portion and a button column provided at the bottom of the end portion. In the closed state, the limiting portion is located at the bottom of the end portion and abuts against the end portion, thereby limiting the downward movement of the programming button.

[0025] Compared with the prior art, the advantages of the present invention are: it has a limiting portion for limiting the downward movement of the programming button, and its structural design is reasonable. When the lead seal structure is rotated to a closed state, the limiting portion limits the downward movement of the programming button, thereby making it impossible to press the programming button, thereby preventing misoperation and increasing reliability; when the programming button needs to be used, the lead seal structure is rotated to disengage the limiting portion from the programming button, so that the programming button can be pressed downward; in addition, the lead seal structure is simple in structure, easy to assemble, and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the embodiment in a closed state;

[0027] Figure 2 It is a cross-sectional view of the embodiment in a closed state;

[0028] Figure 3 for Figure 2 A magnified view of point A;

[0029] Figure 4 This is a schematic diagram of the structure of the embodiment in the open state;

[0030] Figure 5 This is a cross-sectional view of the embodiment in the open state (excluding the silicone button);

[0031] Figure 6 for Figure 5 Enlarged view of point B;

[0032] Figure 7 A schematic diagram of a lead seal according to an embodiment;

[0033] Figure 8 It is a structural schematic diagram of an embodiment (excluding the lead seal structure). DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] like Figure 1-8 The electric energy meter with the lead seal structure 4 comprises a box body 1, a meter cover 2 provided on the box body 1, a programming button 3 and a lead seal structure 4.

[0036] The programming button 3 is located on the meter cover 2 and includes an end 31 and a button column 32 located at the bottom of the end 31. When closed, a stopper 412 is located at the bottom of the end 31 and abuts against it, thereby restricting the downward movement of the programming button 3. A silicone button 33, connected to the housing 1, is located at the bottom of the button column 32. This silicone button 33 has an electric contact at its bottom. Pressing down on the programming button 3 deforms the silicone button 33, causing the electric contact to contact the PCB (not shown) inside the meter box. When the downward force is removed, the silicone button 33 rebounds, returning the programming button 3 to its original position.

[0037] The lead seal structure 4 is rotatably mounted on the watch cover 2 and has a limit portion 412 for limiting the downward movement of the programming button 3;

[0038] The lead sealing structure 4 includes a lead sealing member 41 and a locking member 42 .

[0039] The seal 41 has a sealing hole 411 and is rotatably mounted on the watch cover 2. The end 31 of the seal 41 has a stopper 412 for limiting the downward movement of the programming button 3. A resilient block 413 is mounted on the seal 411, and the watch cover 2 has a corresponding guide slot 21 for accommodating the resilient block 413. The resilient block 413 is movable within the guide slot 21. The seal 41 includes a seal post 414 and a gripping member 415. The seal post 414 is rotatably mounted on the watch cover 2, with a stopper 412 at one end. The resilient block 413 is mounted on the wall of the seal post 414. The gripping member 415 is located at the other end of the seal post 414. A raised indicator post 416 is located on the side of the gripping member 415 near the watch cover 2. A corresponding first step 22 is located on the side of the watch cover 2, against which the gripping member 415 abuts. The rotation of the gripping member 415 drives the indicator post 416 past the first step 22. The locking member 42 is disposed in the seal hole 411 and is used to limit the rotation of the seal member 41. The limiting portion 412 is fan-shaped, and the center of the arc surface of the fan is located at the axis of the seal column 414, so that the limiting portion 412 changes position as the seal column 414 rotates.

[0040] The side of the watch cover 2 has an outwardly protruding mounting portion 23, which has a mounting hole 24, a first step 22, and a second step 25. The lead seal column 414 is rotatably mounted in the mounting hole 24. The bottom end of the side wall of the handshake portion 415 is provided with a protruding extension portion 417. The top end of the extension portion 417 is an arc surface and is located at the bottom of the mounting portion 23. Correspondingly, the bottom end of the mounting portion 23 is an arc surface. When the elastic block 413 is located in the guide groove 21, it abuts against the second step 25. A blocking portion 26 is formed on the mounting portion 23 extending outward. In the closed state, one side of the lead seal 41 abuts against the blocking portion 26, and in the open state, the other side of the lead seal 41 abuts against the blocking portion 26, thereby helping the user to judge the rotation angle and prevent incomplete rotation.

[0041] The usage process of this embodiment is:

[0042] like Figure 1-3 As shown, in the closed state, the locking member 42 is disposed in the lead seal hole 411 to restrict the rotation of the lead seal 41, and the limiting portion 412 is disposed at the bottom of the end portion 31 and abuts against the end portion 31, thereby restricting the programming button 3 from moving downward;

[0043] like Figure 4-6 As shown, in the open state, the locking member 42 disengages from the lead seal hole 411, and the lead seal structure 4 rotates to rotate the limiting portion of the lead seal structure 4, disengaging the limiting state from the programming button 3, so that the programming button 3 can be pressed down; after the external pressing force disappears, the silicone button 3 rebounds, driving the programming button 3 back to its original position.

Claims

1. An electric energy meter with a lead seal structure, comprising a box body (1) and a meter cover (2) arranged on the box body (1), wherein the meter cover (2) is provided with a programming button (3); characterized in that: The electric energy meter further includes: A lead seal structure (4) is rotatably mounted on the watch cover (2), wherein the lead seal structure (4) has a limiting portion (412) for limiting the downward movement of the programming button (3); In the closed state, the limiting portion (412) limits the downward movement of the programming button (3); In the open state, the lead seal structure (4) rotates to separate the lead seal structure (4) and the programming button (3) from the restricted state, so that the programming button (3) can be pressed downward.

2. The electric energy meter with a lead seal structure according to claim 1, characterized in that: The lead seal structure (4) comprises: A lead seal (41) having a lead seal hole (411) and rotatably arranged on the watch cover (2), wherein the end (31) of the lead seal (41) has a limiting portion (412) for limiting the downward movement of the programming button (3); The locking member (42) is arranged in the lead sealing hole (411) and is used to limit the rotation of the lead sealing member (41).

3. The electric energy meter with a lead seal structure according to claim 2, characterized in that: The lead seal (41) is provided with an elastic block (413), and correspondingly, the cover (2) has a guide groove (21) for accommodating the elastic block (413); the elastic block (413) can move in the guide groove (21).

4. The electric energy meter with a lead seal structure according to claim 3, characterized in that: The lead seal (41) comprises: A lead seal column (414) is rotatably mounted on the cover (2), and has a limiting portion (412) at one end. The elastic block (413) is mounted on a peripheral wall of the lead seal column (414). The handshake portion (415) is located at the other end of the lead seal column (414).

5. The electric energy meter with a lead seal structure according to claim 4, characterized in that: The side surface of the watch cover (2) is provided with a mounting portion (23) protruding outward, the mounting portion (23) has a mounting hole (24), and the lead seal column (414) is rotatably mounted in the mounting hole (24).

6. The electric energy meter with a lead seal structure according to claim 5, characterized in that: The handshake portion (415) is provided with a raised prompt column (416) on one side close to the watch cover (2). Correspondingly, the mounting portion (23) has a first step (22) abutting against the handshake portion (415). The handshake portion (415) rotates to drive the prompt column (416) to pass through the first step (22).

7. The electric energy meter with a lead seal structure according to claim 6, characterized in that: The bottom end of the side wall of the handshake portion (415) is provided with a raised extension portion (417), the top end of the extension portion (417) is an arc surface and is located at the bottom of the mounting portion (23), and correspondingly, the bottom end of the mounting portion (23) is an arc surface.

8. The electric energy meter with a lead seal structure according to claim 5, characterized in that: The mounting portion (23) further has a second step (25), and the elastic block (413) abuts against the second step (25) when located in the guide groove (21).

9. The electric energy meter with a lead seal structure according to claim 4, characterized in that: The limiting portion (412) is fan-shaped, and the center of the arc surface of the fan is located on the axis of the lead seal column (414).

10. The electric energy meter with a lead seal structure according to claim 4, characterized in that: The programming button (3) comprises an end portion (31) and a button column (32) disposed at the bottom of the end portion (31); in a closed state, the limiting portion (412) is located at the bottom of the end portion (31) and abuts against the end portion (31), thereby limiting the downward movement of the programming button (3).

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