Electric energy meter with fool-proof structure

Abstract

The utility model discloses an electric energy meter with a fool-proof structure, and the electric energy meter is characterized in that the bottom surface of a pedestal is provided with at least one limiting column, and the limiting column is connected with a fool-proof projection in the radial direction; a limiting hole matched with the limiting column and a fool-proof groove matched with the fool-proof bulge are formed in the bottom surface of the terminal box; through cooperation of the limiting columns and the limiting holes and cooperation of the fool-proof protrusions and the fool-proof grooves, fool-proof, limiting and fixing effects of the terminal box and the base in the horizontal direction are achieved, the terminal box is prevented from shaking, and the stability of a product is improved.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and specifically to an electricity meter with a foolproof structure. Background Technology

[0002] An electricity meter includes a terminal box and a base. In existing technology, the terminal box is connected to a circuit board, which is then fixed to the base with bolts. The side wall of the terminal box is connected to the inner wall of the base via snap-fit ​​connections, thus achieving a unified connection and fixation between the terminal box and the circuit board. However, in practice, this structure has a certain tolerance in the fixing holes on the circuit board through which the bolts pass, resulting in a certain sliding clearance in the horizontal direction of the terminal box. Sometimes, when the positive or negative tolerance is too large, the terminal box may wobble. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is how to improve the fixing effect of the end-button box. An energy meter with a foolproof structure includes:

[0004] The base has at least one limiting post on its bottom surface, and the limiting post is connected to a foolproof protrusion in the radial direction.

[0005] The end button box has a limiting hole on its bottom surface that mates with the limiting post and a foolproof groove that mates with the foolproof protrusion.

[0006] The bottom surface of the base is provided with an arc-shaped protrusion, which is located outside the limiting post. The bottom surface of the end button box is provided with an arc-shaped groove that mates with the arc-shaped protrusion.

[0007] When the number of the limiting posts exceeds one, the bottom surface of the base is also provided with connecting ribs, which connect two adjacent arc-shaped protrusions.

[0008] The arc-shaped protrusion is a superior arc structure; or, the arc-shaped protrusion is a semi-circular structure.

[0009] When the number of the arc-shaped protrusions exceeds one, one of the arc-shaped protrusions is a semi-circular structure.

[0010] The height of the arc-shaped protrusion is the same as the height of the limiting post.

[0011] The base, the limiting post, and the anti-foolproof protrusion are integrally injection molded.

[0012] The inner wall of the base is provided with at least two buckles, and the side wall of the end button box is provided with a slot that engages with the buckles.

[0013] It also includes a sealing strip, the base is provided with a first sealing groove, the inner wall of the base is provided with a rib, the end button box is provided with a second sealing groove, the first sealing groove is connected to the second sealing groove, the sealing strip is accommodated in the first sealing groove and the second sealing groove, and the rib portion is embedded in the second sealing groove.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. The present invention provides an energy meter with a foolproof structure. Through the cooperation of the limiting post and the limiting hole, and the cooperation of the foolproof protrusion and the foolproof groove, a foolproof and limiting fixing effect is formed between the end button box and the base in the horizontal direction, which prevents the end button box from shaking and improves the stability of the product.

[0016] 2. The present invention provides an energy meter with a foolproof structure. The arc-shaped protrusion creates a double limiting and fixing effect, further improving the overall fixing effect.

[0017] 3. The present invention provides an energy meter with a foolproof structure, wherein the connecting ribs form a reinforcing effect, improve the strength of the limiting post and the arc-shaped protrusion, and prevent breakage during the fixing process.

[0018] 4. The energy meter with a foolproof structure provided by this utility model adopts a highly consistent setting, which makes the manufacturing process more convenient.

[0019] 5. The energy meter with a foolproof structure provided by this utility model is injection molded in one piece, which makes the processing more convenient. In addition, if it is necessary to improve the strength of the limit post and the foolproof protrusion, a structure with metal parts embedded can also be adopted to improve the strength.

[0020] 6. The present invention provides an energy meter with a foolproof structure, which improves the fixing strength of the terminal box by setting two buckles.

[0021] 7. The present invention provides an energy meter with a foolproof structure. The ribs improve the sealing effect and prevent dust or liquid from entering the meter casing. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1A schematic diagram of the structure of an energy meter with a foolproof structure provided by this utility model;

[0024] Figure 2 An exploded view of an energy meter with a foolproof structure provided for this utility model;

[0025] Figure 3 A cross-sectional view of an energy meter with a foolproof structure provided by this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0027] Figure 5 A front view of the base provided by this utility model;

[0028] Figure 6 This is a structural schematic diagram of the end button box provided by this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 11. Base; 12. End button box; 111. Limiting post; 112. Anti-foolproof protrusion; 113. Arc-shaped protrusion; 114. Connecting rib; 115. Buckle; 116. First sealing groove; 117. Raised rib; 121. Limiting hole; 122. Anti-foolproof groove; 123. Arc-shaped groove; 124. Slot; 125. Second sealing groove. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Example 1

[0036] This embodiment provides an energy meter with a foolproof structure, as shown in the attached figure. Figures 1-6 As shown, it includes:

[0037] The base 11 has at least one limiting post 111 on its bottom surface. The limiting post 111 extends upwards, that is, towards the top surface of the electricity meter casing. The number of limiting posts 111 can be adjusted according to actual needs; this embodiment uses two limiting posts 111 as an example. A foolproof protrusion 112 is connected to the radial direction of the limiting post 111. The limiting post 111 has a cylindrical structure, and the foolproof protrusion 112 is connected to its radial direction, that is, the horizontal direction of the base 11. In this embodiment, one foolproof protrusion 112 is used as an example, and the foolproof protrusion 112 extends towards the rear.

[0038] The end-cap box 12 has a bottom surface with a limiting hole 121 that mates with a limiting post 111 and a foolproof groove 122 that mates with a foolproof protrusion 112. The number of limiting holes 121 corresponds to the number of limiting posts 111, and the position of the foolproof groove 122 also corresponds to the position of the foolproof protrusion 112. That is, when the end-cap box 12 is fitted with the base 11, the limiting posts 111 are partially embedded in the limiting holes 121, and the foolproof protrusions 112 are partially embedded in the foolproof grooves 122, forming a foolproof and limiting fit. Through the fit between the limiting posts 111 and the limiting holes 121, and the fit between the foolproof protrusions 112 and the foolproof grooves 122, a foolproof and limiting fixation effect is formed between the end-cap box 12 and the base 11 in the horizontal direction, preventing the end-cap box 12 from shaking and improving the stability of the product.

[0039] Specifically, the bottom surface of the base 11 is provided with an arc-shaped protrusion 113, the radius and size of which can be adjusted according to actual needs. The arc-shaped protrusion 113 is located on the outside of the limiting post 111, and the bottom surface of the end cap box 12 is provided with an arc-shaped groove 123 that mates with the arc-shaped protrusion 113. The arc-shaped protrusion 113 creates a double limiting and fixing effect, further improving the overall fixing effect. Alternatively, a frame-shaped protrusion can also be used to achieve the double limiting and fixing effect. It should be noted that one limiting post 111 corresponds to one arc-shaped protrusion 113.

[0040] Specifically, when the number of limiting posts 111 exceeds one, the bottom surface of the base 11 is also provided with connecting ribs 114, which connect two adjacent arc-shaped protrusions 113. In this embodiment, there are two limiting posts 111 and two arc-shaped protrusions 113, with adjacent arc-shaped protrusions 113 connected by the connecting ribs 114. The connecting ribs 114 provide reinforcement, increasing the strength of the limiting posts 111 and the arc-shaped protrusions 113, and preventing breakage during fixing. In this embodiment, the connecting ribs 114 horizontally connect two arc-shaped protrusions 113. The end-cap box 12 also has a groove that mates with the connecting ribs 114.

[0041] Specifically, the arc-shaped protrusion 113 has a superior arc structure; or, the arc-shaped protrusion 113 has a semi-circular structure. The specific structure of the arc-shaped protrusion 113 can be adjusted according to actual needs.

[0042] Specifically, when the number of arc-shaped protrusions 113 exceeds one, one of the arc-shaped protrusions 113 is a semi-circular structure. Using one of them as a semi-circular structure creates a foolproof effect and prevents incorrect installation orientation.

[0043] Specifically, the height of the arc-shaped protrusion 113 is the same as the height of the limiting post 111. Furthermore, the height of the limiting post 111 is also the same as the height of the foolproof protrusion 112. Using a consistent height makes processing more convenient. Alternatively, unequal heights can be used, meaning the heights of the arc-shaped protrusion 113, the limiting post 111, and the foolproof protrusion 112 are all different, which can be adjusted by those skilled in the art according to actual needs.

[0044] Specifically, the base 11, the limiting post 111, and the foolproof protrusion 112 are injection molded as a single piece. This single-piece injection molding process facilitates manufacturing. It should be noted that the limiting hole 121 and the foolproof groove 122 corresponding to the end button box 12 are also injection molded as a single piece with the end button box 12 body. Furthermore, if it is necessary to increase the strength of the limiting post 111 and the foolproof protrusion 112, an embedded metal structure can be used to improve strength.

[0045] Specifically, the terminal box 12 also has a relay and a current transformer fixed in place. This is existing technology, so it will not be described in detail in this embodiment.

[0046] Specifically, the inner wall of the base 11 is provided with at least two buckles 115, and the side wall of the terminal box 12 is provided with a slot 124 that mates with the buckles 115. The two buckles 115 enhance the fixing strength of the terminal box 12. In this embodiment, two buckles 115 are used as an example; they are positioned vertically along the entire height of the electricity meter to improve the fixing effect and prevent the terminal box 12 from loosening.

[0047] Specifically, it also includes a sealing strip. The base 11 has a first sealing groove 116, which is a U-shaped structure located on a horizontal plane. The end-cap box 12 has a second sealing groove 125, which is also a U-shaped structure, but located on a vertical plane. When the end-cap box 12 mates with the base 11, the horizontal area of ​​the second sealing groove 125 mates with the first sealing groove 116 to form an annular sealing structure, which is partially filled by the sealing strip. The vertical area of ​​the second sealing groove 125 is set along the height of the electricity meter, and the remaining part of the sealing strip fills the vertical area of ​​the second sealing groove 125. In actual installation, two sealing strips are used, corresponding to the first sealing groove 116 and the second sealing groove 125 respectively. The inner wall of the base 11 is provided with a raised rib 117, which is embedded in the longitudinal area of ​​the second sealing groove 125. The cooperation of the raised rib 117 improves the sealing effect of the sealing strip and prevents the sealing strip located in the second sealing groove 125 from loosening. The setting of the raised rib 117 improves the sealing effect and prevents dust or liquid from entering the casing.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electricity meter with a foolproof structure, characterized in that, include: The base (11) has at least one limiting post (111) on its bottom surface, and the limiting post (111) is connected to a foolproof protrusion (112) in the radial direction. End button box (12), the bottom surface of the end button box (12) is provided with a limiting hole (121) that cooperates with the limiting post (111) and a foolproof groove (122) that cooperates with the foolproof protrusion (112).

2. The energy meter with a foolproof structure according to claim 1, characterized in that, The bottom surface of the base (11) is provided with an arc-shaped protrusion (113), which is located outside the limiting post (111). The bottom surface of the end button box (12) is provided with an arc-shaped groove (123) that cooperates with the arc-shaped protrusion (113).

3. The energy meter with a foolproof structure according to claim 2, characterized in that, When the number of the limiting posts (111) exceeds one, the bottom surface of the base (11) is also provided with connecting ribs (114), and the connecting ribs (114) connect two adjacent arc-shaped protrusions (113).

4. The energy meter with a foolproof structure according to claim 2 or 3, characterized in that, The arc-shaped protrusion (113) is an arc structure; or, the arc-shaped protrusion (113) is a semi-circular structure.

5. The energy meter with a foolproof structure according to claim 4, characterized in that, When the number of the arc-shaped protrusions (113) exceeds one, one of the arc-shaped protrusions (113) is a semi-circular structure.

6. The energy meter with a foolproof structure according to claim 2 or 3, characterized in that, The height of the arc-shaped protrusion (113) is the same as the height of the limiting post (111).

7. The energy meter with a foolproof structure according to claim 2 or 3, characterized in that, The base (11), the limiting post (111), and the anti-fooling protrusion (112) are integrally injection molded.

8. The energy meter with a foolproof structure according to claim 1, characterized in that, The inner wall of the base (11) is provided with at least two buckles (115), and the side wall of the end button box (12) is provided with a slot (124) that cooperates with the buckles (115).

9. The energy meter with a foolproof structure according to claim 1, characterized in that, It also includes a sealing strip. The base (11) is provided with a first sealing groove (116). The inner wall of the base (11) is provided with a rib (117). The end button box (12) is provided with a second sealing groove (125). The first sealing groove (116) is connected to the second sealing groove (125). The sealing strip is accommodated in the first sealing groove (116) and the second sealing groove (125). The rib (117) is partially embedded in the second sealing groove (125).

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