Electric energy meter

Abstract

The utility model discloses an electric energy meter, which comprises an upper shell, a key, an elastic sealing element and a circuit board, the upper shell is provided with an accommodating hole, a bottom plate is arranged in the accommodating hole, and the bottom plate is provided with a via hole; the key is slidably arranged in the containing hole in the axial direction, and the tail end of the key penetrates through the via hole; the elastic sealing element is connected with the tail end of the key and is in contact with the inner side surface of the bottom plate to form a first annular sealing surface, and a conductive layer is arranged on the elastic sealing element; the circuit board is provided with a circuit wire, and the circuit wire is disconnected in an area corresponding to the conductive layer to form two conductive contact areas which are not connected; when the key is pressed to move towards the direction close to the circuit board to a preset position, the conductive layer is respectively contacted and conducted with the two conductive contact areas, so that the circuit wiring becomes a path. The electric energy meter is simple and novel in structure, the arrangement of a touch switch corresponding to the key is omitted, the acquisition cost and the assembly cost of parts in the electric energy meter are reduced, and the electric energy meter is free of the adhesion failure risk of the touch switch and good in working stability.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy metering devices, in particular to an electric energy meter. Background Art

[0002] my country has a large population and has long realized one electricity meter for each household, so the application of electricity meters is extremely extensive. When users check and set the electricity meter, they must touch the button.

[0003] In the prior art, the key structure of the electric energy meter includes an upper shell, a key and a sealing member, wherein the upper shell is provided with a receiving hole, the key is received in the receiving hole and can slide in the axial direction, the interior of the receiving hole is provided with a bottom plate, the bottom plate has a through hole for the tail end of the key to pass through, the sealing member is sleeved on the tail end of the key and abuts against the inner side surface of the bottom plate to form a sealed and waterproof structure; a circuit board is provided in the electric energy meter, and a touch switch corresponding to the key is provided on the circuit board, and the staff can trigger the touch switch by pressing the key, however, the provision of the touch switch undoubtedly occupies the component purchase cost and assembly cost of the electric energy meter, resulting in an increase in the manufacturing cost of the electric energy meter, and at the same time, due to the presence of the three-proof paint on the circuit board, it is also easy to cause the touch switch to fail due to adhesion, so that the key structure of the electric energy meter cannot work normally and stably. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a low-cost electric energy meter with good working stability.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an electric energy meter, comprising:

[0006] An upper shell, wherein a receiving hole is provided on the upper shell, a bottom plate is provided in the receiving hole, and a through hole is provided on the bottom plate;

[0007] A button, the button is slidably disposed in the receiving hole along the axial direction, and the tail end of the button passes through the through hole;

[0008] An elastic sealing member, the elastic sealing member is connected to the tail end of the key and contacts the inner side surface of the bottom plate to form a first annular sealing surface, and a conductive layer is provided on the elastic sealing member;

[0009] A circuit board, wherein a circuit trace is provided on the circuit board, and the circuit trace is disconnected in an area corresponding to the conductive layer to form two unconnected conductive contact areas;

[0010] When the key is pressed and moves toward a preset position in a direction close to the circuit board, the conductive layer contacts and conducts with the two conductive contact areas respectively to form a path for the circuit wiring.

[0011] In one embodiment, the elastic sealing member includes a mounting portion and a conical portion surrounding the mounting portion, the small end of the conical portion is connected to the mounting portion, the tail end of the button is connected to the mounting portion, the surface of the mounting portion close to the base plate and the inner side surface of the base plate form the first annular sealing surface, the large end of the conical portion abuts against the circuit board to form an annular sealing surface, and the conductive layer is arranged on the surface of the mounting portion away from the base plate.

[0012] In one embodiment, a ring groove is provided at the tail end of the button, and the mounting portion is fixedly connected to the button via the ring groove.

[0013] In one embodiment, a mounting column is provided on the upper shell, the receiving hole is provided in the mounting column, the elastic sealing member also includes a cylindrical portion arranged around the truncated cone portion, the large mouth end of the truncated cone portion is connected to the cylindrical portion, and the cylindrical portion is sealingly connected to the mounting column to form a cylindrical sealing surface.

[0014] In one embodiment, a second annular sealing surface is formed between a connection between the truncated cone portion and the cylindrical portion and an end portion of the mounting column.

[0015] In one embodiment, the outer wall surface of the barrel portion is sealedly connected to the inner wall surface of the mounting post; and / or the inner wall surface of the barrel portion is sealedly connected to the outer wall surface of the mounting post.

[0016] In one embodiment, a reset member is further included. The reset member is disposed in the receiving hole and located on the outer side of the bottom plate. The reset member contacts the button and the bottom plate respectively.

[0017] In one embodiment, the conductive layer is a metal material layer or a carbon powder layer.

[0018] In one embodiment, the head of the button is provided with a first lead seal through groove connecting its peripheral wall and end face, and the button is provided with a protrusion; the button is rotatable relative to the receiving hole, the inner wall of the receiving hole has a stop ring protruding inward, the stop ring is provided with a through groove for avoiding the protrusion, and the upper shell is provided with a second lead seal through groove connecting its outer surface and the inner wall of the receiving hole; it also includes a lead seal structure, and the lead seal structure includes a lead seal rope; when the first lead seal through groove is connected to the second lead seal through groove, the lead seal rope passes through the first lead seal through groove and the second lead seal through groove, the protrusion is misaligned with the through groove, and the stop ring stops the protrusion.

[0019] In one embodiment, the first lead seal penetration groove forms a straight groove on the end surface of the head of the key.

[0020] The beneficial effects of the utility model are as follows: the electric energy meter has a simple and novel structure, eliminates the setting of the touch switch corresponding to the button, reduces the purchase cost and assembly cost of parts in the electric energy meter, is conducive to reducing the overall manufacturing cost of the electric energy meter, and, the electric energy meter has no risk of failure due to adhesion of the touch switch, is conducive to ensuring the working stability of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A cross-sectional view of an electric energy meter according to Embodiment 1 of the present utility model Figure 1 ;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 The structure of the elastic seal in the electric energy meter of the first embodiment of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 4 The structure of the elastic seal in the electric energy meter of the first embodiment of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the structure of the circuit board in the electric energy meter of the first embodiment of the utility model;

[0027] Figure 6 A cross-sectional view of an electric energy meter according to Embodiment 1 of the present utility model Figure 2 ;

[0028] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0029] Figure 8 This is a schematic structural diagram of the upper shell in the electric energy meter of the first embodiment of the utility model;

[0030] Fig. 9 The figure is a schematic diagram of the structure of the buttons in the electric energy meter according to the first embodiment of the utility model.

[0031] Description of Figure Numbers:

[0032] 1. Upper shell; 11. Mounting column; 12. Receiving hole; 13. Bottom plate; 14. Second lead seal groove; 15. Stop ring; 16. Over-groove;

[0033] 2. elastic sealing member; 21. mounting portion; 211. first annular sealing surface; 22. truncated cone portion; 221. second annular sealing surface; 222. annular sealing surface; 23. cylinder portion; 231. cylinder sealing surface;

[0034] 3. Button; 31. Ring groove; 32. First lead seal groove; 33. Bump;

[0035] 4. Reset parts;

[0036] 5. Circuit board; 51. Conductive contact area;

[0037] 6. Conductive layer. DETAILED DESCRIPTION

[0038] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0042] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] Please refer to Figures 1 to 9 , Embodiment 1 of the utility model is: an electric energy meter, comprising an upper shell 1, a button 3, an elastic seal 2 and a circuit board 5, the upper shell 1 is provided with a receiving hole 12, a bottom plate 13 is provided in the receiving hole 12, and a through hole is provided on the bottom plate 13; the button 3 is slidably arranged in the receiving hole 12 along the axial direction, and the tail end of the button 3 passes through the through hole; the elastic seal 2 is connected to the tail end of the button 3 and contacts with the inner side surface of the bottom plate 13 to form a first annular sealing surface 211, and a conductive layer 6 is provided on the elastic seal 2; the circuit board 5 is arranged in the upper shell 1, and a circuit trace is provided on the circuit board 5, and the circuit trace is disconnected in the area corresponding to the conductive layer 6 to form two unconnected conductive contact areas 51; please combine Figure 2 , Figure 5 and Figure 7 When the button 3 is not pressed, there is a gap between the conductive layer 6 and the circuit line, and the circuit line remains disconnected. When the button 3 is pressed and moves toward the circuit board 5 to a preset position, the conductive layer 6 contacts and conducts with the two conductive contact areas 51 to make the circuit line a passage. In this way, the elastic seal 2 not only seals, but also conducts the circuit line, enriching the function of the elastic seal 2.

[0046] The conductive layer 6 is a metal material layer or a carbon powder layer, and the conductive layer 6 can be fixed on the elastic sealing member 2 by printing, spraying, bonding and other processes.

[0047] In some embodiments, the elastic seal 2 may be an O-ring, etc., and in this embodiment, please refer to Figures 2 to 4 The elastic seal 2 includes a mounting portion 21 and a truncated cone portion 22 surrounding the mounting portion 21. The small end of the truncated cone portion 22 is connected to the mounting portion 21. The tail end of the button 3 is connected to the side of the mounting portion 21 close to the bottom plate 13. The surface of the mounting portion 21 close to the bottom plate 13 and the inner side surface of the bottom plate 13 form the first annular sealing surface 211. The large end of the truncated cone portion 22 abuts against the circuit board 5 to form an annular sealing surface 222. The conductive layer 6 is arranged on the surface of the mounting portion 21 away from the bottom plate 13. The truncated cone portion 22 of the elastic seal 2 abuts against the circuit board 5 to form a closed space, which can prevent the conductive layer 6 from contacting water vapor, dust, etc., so that the conductive layer 6 is free from pollution, which is conducive to ensuring the stability of the conductive layer 6 contacting and conducting with the circuit wiring. At the same time, the truncated cone portion 22 can also provide a reset force for the button 3, so that when the button 3 is not pressed, the gap is retained between the conductive layer 6 and the circuit wiring. In actual products, the truncated cone portion 22 may also be in the shape of a truncated cone, which should be regarded as an equivalent feature of the truncated cone portion 22 .

[0048] Specifically, the tail end of the button 3 is provided with an annular groove 31, and the mounting portion 21 is fixedly connected to the button 3 through the annular groove 31. More specifically, the top of the mounting portion 21 is provided with an embedding groove for matching with the tail end of the button 3, and the cross section of the embedding groove is convex.

[0049] In this embodiment, a mounting column 11 is provided on the upper shell 1, and the receiving hole 12 is provided in the mounting column 11. The elastic sealing member 2 also includes a cylindrical portion 23 arranged around the truncated cone portion 22, and the large mouth end of the truncated cone portion 22 is connected to the cylindrical portion 23. The cylindrical portion 23 is sealed and connected to the mounting column 11 to form a cylindrical sealing surface 231. The elastic seal 2 constructed in this way has a stronger sealing performance. When the user presses the button 3, although the mounting portion 21 is separated from the base plate 13, due to the presence of the cylindrical sealing surface 231, a closed space can be formed between the truncated cone portion 22 of the elastic seal 2 and the base plate 13 to limit the entry of water vapor into the meter. Therefore, after the user presses the button 3, external water vapor and dust can only enter the closed space at most, but cannot enter the interior of the electric energy meter. Therefore, when the user presses the button 3, the sealing performance of the electric energy meter will not be destroyed, which effectively improves the sealing and waterproof effect of the electric energy meter; and a planar snap-fit ​​structure is formed at the connection between the button 3 and the elastic seal 2, and the button 3 itself cannot be separated from the upper shell 1. Even if the user pulls out the button 3 violently, due to the presence of the elastic seal 2, the user cannot insert tools into the electric energy meter to tamper with the electric energy meter or perform other illegal operations, which is beneficial to ensuring the data security of the electric energy meter.

[0050] Please combine Figures 2 to 4 Preferably, the elastic seal 2 is a body of revolution structure. In actual products, a partial area of ​​the elastic seal 2 constitutes a body of revolution structure, rather than the entire body of revolution structure. The specific setting can be made according to actual needs.

[0051] The outer wall surface of the barrel portion 23 is sealedly connected to the inner wall surface of the mounting post 11, thereby forming a cylindrical sealing surface 231. However, in this embodiment, the inner wall surface of the barrel portion 23 is sealedly connected to the outer wall surface of the mounting post 11, thereby forming a cylindrical sealing surface 231. Of course, in actual products, it is also possible that the wall of the mounting post 11 is inserted into the barrel portion 23 to form a cylindrical sealing surface 231 on the inner wall of the receiving hole 12 and another cylindrical sealing surface 231 is formed on the outer wall of the mounting post 11.

[0052] In one embodiment, a second annular sealing surface 221 is formed between the connection between the truncated cone portion 22 and the cylindrical portion 23 and the end of the mounting column 11 , and under the pressure of the circuit board 5 , the integrity of the second annular sealing surface 221 can be fully guaranteed.

[0053] The elastic sealing member 2 may be made of rubber or the like. In the present embodiment, the elastic sealing member 2 is made of silicone.

[0054] The upper shell 1 and the elastic seal 2 can be either a split structure or an integrated structure. When the upper shell 1 and the elastic seal 2 are a split structure, the mounting column 11 of the upper shell 1 is adhesively connected or welded to the barrel 23. When the upper shell 1 and the elastic seal 2 are an integrated structure, the upper shell 1 and the elastic seal 2 can be an integrated structure formed by insert injection molding.

[0055] like Figure 2 As shown, to ensure that the button 3 can be reset normally, the electric energy meter also includes a reset member 4, which is arranged in the receiving hole 12 and located on the outside of the bottom plate 13, and the reset member 4 contacts the button 3 and the bottom plate 13 respectively. The reset member 4 can be a spring, a spring sheet, a spring washer made of elastic material, etc.

[0056] Please combine Figures 6 to 9Optionally, the head of the button 3 is provided with a first lead seal groove 32 connecting its peripheral wall and end surface, and the button 3 is provided with a protrusion 33; the button 3 is rotatable relative to the receiving hole 12, and the inner wall of the receiving hole 12 has a stop ring 15 protruding inward, and the stop ring 15 is provided with a through groove 16 for avoiding the protrusion 33, and the upper shell 1 is provided with a second lead seal groove 14 connecting its outer surface and the inner wall of the receiving hole 12; the electric energy meter also includes a lead seal structure, and the lead seal structure includes a lead seal rope; when the first lead seal groove 32 is connected to the second lead seal groove 14, the lead seal rope passes through the first lead seal groove 32 and the second lead seal groove 14, the protrusion 33 is misaligned with the through groove 16, and the stop ring 15 stops the protrusion 33. When the authorized staff needs to operate the button 3, they first destroy the lead seal structure, pull out the lead seal rope, and then rotate the button 3 to align the protrusion 33 on the button 3 with the groove 16 on the stop ring 15, and finally press the button 3.

[0057] The electric energy meter has a lead-sealing structure for locking the button 3 and the upper shell 1, which greatly reduces the probability of electricity theft. Moreover, the button 3 needs to be rotated until the protrusion 33 is aligned with the slot 16 before it can be pressed, which relaxes the length requirement of the lead-sealing rope, making the lead-sealing structure easy to install. At the same time, it avoids the phenomenon that the button 3 can be operated without destroying the lead-sealing structure, which is conducive to ensuring the lead-sealing effect. Moreover, the cooperation between the protrusion 33 and the stop ring 15 forms an anti-mistouch structure, ensuring that the electric energy meter can work normally and stably.

[0058] In order to balance the force on the key 3, the number of the protrusions 33 on the key 3 is multiple, and the multiple protrusions 33 are evenly distributed around the axis of the key 3. In this embodiment, the number of the protrusions 33 is two, and the two protrusions 33 are arranged 180° apart.

[0059] To facilitate the staff to rotate the button 3, preferably, the first lead seal penetration groove 32 forms a straight groove on the end surface of the head of the button 3. Further preferably, when looking down at the button 3, the protrusion 33 is arranged 90° apart from the straight groove.

[0060] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electric energy meter, characterized in that: include An upper shell, wherein a receiving hole is provided on the upper shell, a bottom plate is provided in the receiving hole, and a through hole is provided on the bottom plate; A button, the button is slidably disposed in the receiving hole along the axial direction, and the tail end of the button passes through the through hole; An elastic sealing member, the elastic sealing member is connected to the tail end of the key and contacts the inner side surface of the bottom plate to form a first annular sealing surface, and a conductive layer is provided on the elastic sealing member; A circuit board, wherein a circuit trace is provided on the circuit board, and the circuit trace is disconnected in an area corresponding to the conductive layer to form two unconnected conductive contact areas; When the key is pressed and moves toward a preset position in a direction close to the circuit board, the conductive layer contacts and conducts with the two conductive contact areas respectively to form a path for the circuit wiring.

2. The electric energy meter according to claim 1, characterized in that: The elastic sealing component includes a mounting portion and a truncated cone portion surrounding the mounting portion, the small end of the truncated cone portion is connected to the mounting portion, the tail end of the button is connected to the mounting portion, the surface of the mounting portion close to the base plate and the inner side surface of the base plate form the first annular sealing surface, the large end of the truncated cone portion abuts against the circuit board to form an annular sealing surface, and the conductive layer is arranged on the surface of the mounting portion away from the base plate.

3. The electric energy meter according to claim 2, characterized in that: The tail end of the button is provided with an annular groove, and the mounting portion is fixedly connected to the button through the annular groove.

4. The electric energy meter according to claim 2, characterized in that: The upper shell is provided with a mounting column, the receiving hole is arranged in the mounting column, the elastic sealing member also includes a cylinder portion arranged around the truncated cone portion, the large mouth end of the truncated cone portion is connected to the cylinder portion, and the cylinder portion is sealingly connected to the mounting column to form a cylindrical sealing surface.

5. The electric energy meter according to claim 4, characterized in that: A second annular sealing surface is formed between the connection between the truncated cone portion and the cylindrical portion and the end portion of the mounting column.

6. The electric energy meter according to claim 4, characterized in that: The outer wall surface of the cylinder is sealedly connected to the inner wall surface of the mounting post; and / or the inner wall surface of the cylinder is sealedly connected to the outer wall surface of the mounting post.

7. The electric energy meter according to claim 1, characterized in that: It also includes a reset member, which is arranged in the receiving hole and located on the outside of the bottom plate, and the reset member contacts the button and the bottom plate respectively.

8. The electric energy meter according to claim 1, characterized in that: The conductive layer is a metal material layer or a carbon powder layer.

9. The electric energy meter according to claim 1, characterized in that: The head of the key is provided with a first lead seal through groove connecting its peripheral wall and the end face, and the key is provided with a protrusion; the key is rotatable relative to the receiving hole, the inner wall of the receiving hole is provided with a stop ring protruding inward, the stop ring is provided with a through groove for avoiding the protrusion, and the upper shell is provided with a second lead seal through groove connecting its outer surface and the inner wall of the receiving hole; it also includes a lead seal structure, and the lead seal structure includes a lead seal rope; when the first lead seal through groove is connected with the second lead seal through groove, the lead seal rope passes through the first lead seal through groove and the second lead seal through groove, the protrusion is misaligned with the through groove, and the stop ring stops the protrusion.

10. The electric energy meter according to claim 9, characterized in that: The first lead seal penetration groove forms a straight groove on the end surface of the head of the key.

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