Waterproof ammeter with uncovering detection function

Abstract

The utility model discloses a waterproof ammeter with a cover opening detection function, which comprises a bottom shell, a PCB (Printed Circuit Board), a surface shell, a terminal cover, a trigger assembly and an elastic sealing element, and the bottom shell is provided with a connecting terminal assembly; the PCB is fixed on the bottom shell, and a through hole and a trigger detection structure are arranged on the PCB; the surface shell is provided with a positioning hole corresponding to the through hole; the terminal cover is connected with the bottom shell, the terminal cover is connected with the terminal assembly in a covering manner, and a positioning column is arranged on the terminal cover; the trigger assembly comprises a trigger block and an elastic reset piece, the elastic reset piece makes contact with the bottom shell and the trigger block so as to drive the trigger block to move in the direction close to the PCB, and the trigger block corresponds to the through hole and is used for being matched with the trigger detection structure; the elastic sealing piece comprises a column part, a circular truncated cone part and a barrel part which are sequentially connected from inside to outside, one end of the column part abuts against the positioning column, the other end of the column part penetrates through the penetrating hole to abut against the trigger block so that the trigger block can be separated from the trigger detection structure, and the barrel part and the face shell are connected to form a barrel-shaped sealing face. The ammeter is simple in structure and convenient to manufacture.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy metering devices, in particular to a waterproof electric meter with a cover opening detection function. Background Art

[0002] Figure 1 The present invention shows an existing electric meter with a cover opening detection function, which includes a bottom shell 1 and a front shell 3 and a terminal cover 4 respectively connected to the bottom shell 1, wherein the terminal cover 4 covers the connection terminal assembly 7 provided on the bottom shell 1, and the electric meter is provided with a PCB board 2, a first reset member 91, a trigger block 51, a button 92 and a second reset member 93. The first reset member 91 is respectively connected to the trigger block 51 and the bottom shell 1 to drive the trigger block 51 to move toward the direction of the PCB board 2, the button 92 is slidably provided on the front shell 3, and the second reset member 93 is respectively connected to the button 92. The button 92 is driven by the face shell 3 to move away from the PCB board 2. The PCB board 2 is provided with a through-hole in the area corresponding to the button 92. One end of the button 92 passes through the through-hole to press the trigger block 51 so as to maintain a gap between the trigger block 51 and the PCB board 2. The other end of the button 92 presses against the terminal cover 4. When the terminal cover 4 is removed, the second reset member 93 drives the button 92 to move away from the PCB board 2, and the first reset member 91 drives the trigger block 51 to contact the PCB board 2, thereby generating a cover opening signal and realizing cover opening detection.

[0003] It is not difficult to find from the above description that the implementation of the existing cover opening detection function requires the cooperation of many components, which will undoubtedly lead to a complex structure of the electricity meter and a troublesome assembly process. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a waterproof electric meter with a simple structure, easy to manufacture and a cover opening detection function.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a waterproof electric meter with a cover opening detection function, comprising:

[0006] a bottom shell, wherein the bottom shell is provided with a connecting terminal assembly;

[0007] A PCB board, the PCB board is fixed to the bottom shell, and the PCB board is provided with a perforation and a trigger detection structure;

[0008] A front shell connected to the bottom shell to form a chamber, wherein the PCB is located in the chamber, and the front shell has positioning holes corresponding to the perforations;

[0009] A terminal cover, the terminal cover is connected to the bottom shell, the terminal cover covers the connecting terminal assembly, and the terminal cover is provided with a positioning column adapted to the positioning hole;

[0010] a trigger assembly, the trigger assembly comprising a trigger block and an elastic reset member, the elastic reset member respectively contacting the bottom shell and the trigger block to drive the trigger block to move toward the PCB board, the trigger block corresponding to the perforation, and the trigger block being configured to cooperate with the trigger detection structure;

[0011] An elastic sealing member includes a column portion, a conical portion, and a cylindrical portion connected in sequence from the inside to the outside, one end of the column portion abuts against the positioning column, and the other end of the column portion passes through the through hole and abuts against the trigger block to separate the trigger block from the trigger detection structure, and the cylindrical portion is connected to the face shell to form a cylindrical sealing surface.

[0012] In one embodiment, the trigger detection structure is a press switch.

[0013] In one embodiment, the trigger detection structure is a circuit breakage trace provided on the PCB board, the circuit breakage trace has two non-touching contacts, the trigger block is a conductive structural component for conducting the two contacts, or the trigger block is provided with a conductive layer for conducting the two contacts.

[0014] In one embodiment, the face shell has a cylindrical structure arranged around the positioning hole, and the cylindrical portion is connected to the cylindrical structure to form the cylindrical sealing surface.

[0015] In one embodiment, the outer wall surface of the cylinder portion is sealed to the inner wall surface of the cylinder structure.

[0016] In one embodiment, the inner wall surface of the cylinder portion is sealed to the outer wall surface of the cylinder structure.

[0017] In one embodiment, the terminal cover and the bottom shell are fastened together by fasteners.

[0018] In one embodiment, a buckling convex strip is provided at one end of the terminal cover close to the face shell, and a buckling groove matching with the buckling convex strip is provided on the face shell.

[0019] In one embodiment, the positioning post is provided on the buckle convex strip.

[0020] In one embodiment, a mounting post is provided on the bottom shell, and an end of the mounting post close to the PCB board has a mounting groove corresponding to the through-hole, and the elastic reset member is located in the mounting groove.

[0021] The beneficial effects of the present utility model are as follows: the electric meter has a simple structure, and the positioning column on the terminal cover is used as part of the structure of the cover opening detection component. Compared with the prior art, it eliminates the need for a button and a reset member, which not only reduces the cost of purchasing parts, but also facilitates the assembly and manufacture of the electric meter, which helps to reduce the manufacturing cost of the electric meter. At the same time, in the electric meter, the elastic seal can well seal the positioning hole, thereby preventing moisture and dust from entering the interior of the electric meter through the positioning hole. Even after the terminal cover is removed, the elastic seal can still play a good sealing role, which helps to ensure the working stability of the electric meter. In addition, the cooperation between the positioning hole and the positioning column can also enable the terminal cover and the face shell to be accurately positioned and installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A cross-sectional view of an electric meter with a cover opening detection function in the prior art;

[0024] Figure 2 This is a cross-sectional view of a waterproof electric meter with a cover opening detection function according to the first embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of the elastic seal in the waterproof electric meter with cover opening detection function according to the first embodiment of the present invention. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the structure of the elastic seal in the waterproof electric meter with cover opening detection function according to the first embodiment of the present invention. Figure 2 ;

[0028] Figure 6 This is a schematic structural diagram of a waterproof electric meter with a cover-opening detection function according to a first embodiment of the present invention, with the terminal cover hidden;

[0029] Figure 7 This is a structural schematic diagram of the terminal cover in a waterproof electric meter with a cover opening detection function according to the first embodiment of the present invention.

[0030] Description of Figure Numbers:

[0031] 1. Bottom shell; 11. Mounting column;

[0032] 2. PCB board; 21. Perforation; 22. Trigger detection structure;

[0033] 3. Surface shell; 31. Positioning hole; 32. Tube structure; 33. Buckle slot;

[0034] 4. Terminal cover; 41. Positioning column; 42. Buckle convex strip;

[0035] 5. Trigger assembly; 51. Trigger block; 52. Elastic reset member;

[0036] 6. Elastic sealing member; 61. Column portion; 62. Cone portion; 63. Cylinder portion; 631. Cylindrical sealing surface;

[0037] 7. Connect terminal assembly;

[0038] 8. Fasteners;

[0039] 91. First reset element; 92. Button; 93. Second reset element. DETAILED DESCRIPTION

[0040] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments.

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] 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 various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0044] In addition, if the word "and / or" appears throughout the text, it means that three parallel solutions are included. For example, "and / or" includes solutions, or solutions, or solutions that meet all of the requirements simultaneously. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. If the combination of technical solutions is mutually contradictory or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0045] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0046] Example 1

[0047] Please refer to Figures 2 to 7, Embodiment 1 of the present utility model is: a waterproof electric meter with a cover opening detection function, comprising a bottom shell 1, a PCB board 2, a front shell 3, a terminal cover 4, a trigger assembly 5 and an elastic seal 6, wherein the bottom shell 1 is provided with a connecting terminal assembly 7, the connecting terminal assembly 7 is electrically connected to the PCB board 2, the PCB board 2 is fixed to the bottom shell 1, and the PCB board 2 is provided with a through hole 21 and a trigger detection structure 22; the front shell 3 is connected to the bottom shell 1 to form a chamber, the PCB board 2 is located in the chamber, and the front shell 3 has a positioning hole 31 corresponding to the through hole 21; the terminal cover 4 is connected to the bottom shell 1, the terminal cover 4 covers the connecting terminal assembly 7 to provide effective protection for the connecting terminal assembly 7, and the terminal cover 4 is provided with a positioning column 41 adapted to the positioning hole 31; the trigger assembly 5 includes a trigger block 51 and an elastic reset The elastic reset member 52 contacts the bottom shell 1 and the trigger block 51 respectively to drive the trigger block 51 to move toward the PCB board 2. The trigger block 51 is arranged corresponding to the through-hole 21 and is used to cooperate with the trigger detection structure 22. When the trigger block 51 contacts and triggers the trigger detection structure 22, the PCB board 2 generates a cover opening signal. The elastic reset member 52 can be a spring, a spring sheet, a spring washer made of elastic material, etc. The elastic sealing member 6 includes a column 61, a frustum 62, and a cylinder 63 connected in sequence from the inside to the outside. One end of the column 61 contacts the positioning column 41, and the other end of the column 61 passes through the through-hole 21 to contact the trigger block 51 to separate the trigger block 51 from the trigger detection structure 22. The cylinder 63 is connected to the top shell 3 to form a cylindrical sealing surface 631. In actual products, the frustum 62 can also be in the shape of a truncated cone, in which case it should be regarded as an equivalent feature of the frustum 62.

[0048] The terminal cover 4 is fastened to the bottom shell 1 by fasteners 8 , and the fasteners 8 include but are not limited to fastening screws.

[0049] Preferably, the elastic seal 6 is a body of revolution structure. In actual products, a partial area of the elastic seal 6 constitutes a body of revolution structure, rather than the entire body of revolution structure. The specific setting can be made according to actual needs.

[0050] The face shell 3 has a cylindrical structure 32 arranged around the positioning hole 31, and the cylindrical portion 63 is connected to the cylindrical structure 32 to form the cylindrical sealing surface 631. In one embodiment, the outer wall surface of the cylindrical portion 63 is sealedly connected to the inner wall surface of the cylindrical structure 32, thereby forming the cylindrical sealing surface 631. However, in this embodiment, the inner wall surface of the cylindrical portion 63 is sealedly connected to the outer wall surface of the cylindrical structure 32, thereby forming the cylindrical sealing surface 631. Of course, in an actual product, it is also possible that the wall of the cylindrical structure 32 is inserted into the cylindrical portion 63 to form a cylindrical sealing surface 631 on the inner wall of the cylindrical structure 32 and another cylindrical sealing surface 631 on the outer wall of the cylindrical structure 32.

[0051] The elastic sealing member 6 may be made of rubber or the like. In this embodiment, the elastic sealing member 6 is made of silicone.

[0052] The face shell 3 and the elastic seal 6 can be either a split structure or an integrated structure. When the face shell 3 and the elastic seal 6 are a split structure, the barrel structure 32 of the face shell 3 and the barrel part 63 are glued or welded. When the face shell 3 and the elastic seal 6 are an integrated structure, the face shell 3 and the elastic seal 6 can be an integrated structure formed by insert injection molding. This makes it easier to assemble and manufacture the electric meter, and at the same time, the sealing effect of the elastic seal 6 is better.

[0053] To facilitate the installation of the trigger assembly 5, optionally, a mounting post 11 is provided on the bottom shell 1, and the end of the mounting post 11 close to the PCB board 2 has a mounting groove corresponding to the through hole 21, and the elastic reset member 52 is located in the mounting groove.

[0054] In one embodiment, the trigger detection structure 22 is a push switch. In this embodiment, the trigger detection structure 22 is a circuit breakage trace disposed on the PCB 2. The circuit breakage trace has two non-contacting contacts, and the trigger block 51 is a conductive structure for conducting electricity between the two contacts. Alternatively, the trigger block 51 is provided with a conductive layer for conducting electricity between the two contacts. When the trigger block 51 contacts the PCB 2, the circuit breakage trace is conducted through the trigger block 51 itself or the conductive layer on the trigger block 51, forming a pathway, thereby achieving a switch effect.

[0055] Optionally, the terminal cover 4 is provided with a buckle convex strip 42 at one end close to the face shell 3, and the face shell 3 is provided with a buckle groove 33 that matches the buckle convex strip 42. For ease of processing, the positioning column 41 is provided on the buckle convex strip 42.

[0056] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the practical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A waterproof electric meter with a cover opening detection function, characterized by: include a bottom shell, wherein the bottom shell is provided with a connecting terminal assembly; A PCB board, the PCB board is fixed to the bottom shell, and the PCB board is provided with a perforation and a trigger detection structure; A front shell connected to the bottom shell to form a chamber, wherein the PCB is located in the chamber, and the front shell has positioning holes corresponding to the perforations; A terminal cover, the terminal cover is connected to the bottom shell, the terminal cover covers the connecting terminal assembly, and the terminal cover is provided with a positioning column adapted to the positioning hole; a trigger assembly, the trigger assembly comprising a trigger block and an elastic reset member, the elastic reset member respectively contacting the bottom shell and the trigger block to drive the trigger block to move toward the PCB board, the trigger block corresponding to the perforation, and the trigger block being configured to cooperate with the trigger detection structure; An elastic sealing member includes a column portion, a conical portion, and a cylindrical portion connected in sequence from the inside to the outside, one end of the column portion abuts against the positioning column, and the other end of the column portion passes through the through hole and abuts against the trigger block to separate the trigger block from the trigger detection structure, and the cylindrical portion is connected to the face shell to form a cylindrical sealing surface.

2. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The trigger detection structure is a press switch.

3. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The trigger detection structure is a circuit-breaking trace arranged on the PCB board, and the circuit-breaking trace has two non-contacting contacts. The trigger block is a conductive structural component for conducting the two contacts, or the trigger block is provided with a conductive layer for conducting the two contacts.

4. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The face shell has a cylindrical structure arranged around the positioning hole, and the cylindrical portion is connected to the cylindrical structure to form the cylindrical sealing surface.

5. The waterproof electric meter with cover opening detection function according to claim 4, characterized in that: The outer wall surface of the cylinder portion is sealed to the inner wall surface of the cylinder structure.

6. The waterproof electric meter with cover opening detection function according to claim 4, characterized in that: The inner wall surface of the cylinder portion is sealed to the outer wall surface of the cylinder structure.

7. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The terminal cover is fastened to the bottom shell by a fastener.

8. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The terminal cover is provided with a buckle convex strip at one end close to the face shell, and the face shell is provided with a buckle groove matched with the buckle convex strip.

9. The waterproof electric meter with cover opening detection function according to claim 8, characterized in that: The positioning column is arranged on the buckle convex strip.

10. The waterproof electric meter with cover opening detection function according to claim 1, characterized in that: The bottom shell is provided with a mounting post, and one end of the mounting post close to the PCB board has a mounting groove corresponding to the through-hole, and the elastic reset member is located in the mounting groove.

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