Waterproof key structure and electric energy meter

Abstract

The utility model belongs to the technical field of electric energy meters, and provides a waterproof button structure and an electric energy meter, and the waterproof button structure comprises a touch switch, an external pressing assembly, and a sealing sleeve. The external pressing assembly comprises a mounting base, a pressing piece and an elastic element used for elastic reset. The mounting base is fixed outside the electric energy meter, the inner end of the pressing piece corresponds to the touch switch, the pressing piece is movably arranged in the mounting base, and the two ends of the elastic element act on the mounting base and the pressing piece respectively; the two ends of the sealing sleeve abut against the mounting base and the PCB respectively, and the inner end of the pressing piece and the light touch switch are both located in the sealing sleeve. An elastic diaphragm is arranged in an inner cavity of the sealing sleeve, and the diaphragm is located between the inner end of the pressing piece and the light touch switch so as to isolate and seal the pressing piece and the light touch switch. The key structure provided by the utility model has a good waterproof effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric energy meters, and in particular relates to a waterproof key structure. Background Art

[0002] As a common component of the electric energy meter, the button serves as a bridge for effective communication between the user and the internal information of the electric energy meter. At present, the buttons of the electric energy meter are generally assembled on the external structure, and the purpose of signal transmission is achieved by pressing the external button to touch the touch switch on the internal PCB board.

[0003] The use environment of electric energy meters varies greatly. For example, some electric energy meters are installed in humid environments, and some electric energy meters are even installed directly outdoors. Therefore, the waterproof requirements for electric energy meters are high. As active parts, buttons are the weak link in waterproofing. Therefore, the waterproof function of buttons needs to be strengthened. It is necessary to propose a button structure with good waterproof effect. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a waterproof key structure, which has a good waterproof effect and is particularly suitable for electric energy meters.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A waterproof key structure, comprising a touch switch, an external pressing component and a sealing sleeve;

[0007] The touch switch is arranged on the PCB board inside the electric energy meter and is used for signal transmission;

[0008] The external pressing assembly includes a mounting seat, a pressing member, and an elastic element for elastic reset; the mounting seat is fixed to the outside of the electric energy meter, the inner end of the pressing member corresponds to the touch switch, the pressing member is movably arranged in the mounting seat, and the two ends of the elastic element act on the mounting seat and the pressing member respectively;

[0009] The two ends of the sealing sleeve are respectively abutted against the mounting seat and the PCB board, and the inner end of the pressing piece and the touch switch are both located in the sealing sleeve; the inner cavity of the sealing sleeve is provided with an elastic diaphragm, and the diaphragm is located between the inner end of the pressing piece and the touch switch to isolate and seal the pressing piece from the touch switch.

[0010] In a preferred solution of the utility model, a protruding boss is provided on one side of the mounting seat close to the touch switch, a guide channel is provided in the boss, and the pressing member is arranged in the guide channel.

[0011] Preferably, the boss includes a first protrusion and a second protrusion, the second protrusion is located at an end of the first protrusion close to the touch switch, the first protrusion is larger than the second protrusion and a first step is formed at the connection between the first protrusion and the second protrusion; the guide channel is respectively a first guide channel and a second guide channel at corresponding positions of the first protrusion and the second protrusion, and the first guide channel is larger than the second guide channel;

[0012] The pressing member includes a pressing block and a connecting rod, wherein the pressing block is matched and arranged in the first guide channel, one end of the connecting rod is connected to the pressing block, and the other end of the connecting rod extends toward a side close to the touch switch and passes through the second guide channel and then extends out;

[0013] A second step is provided at one end of the inner cavity of the sealing sleeve away from the touch switch, and the second step matches the first step.

[0014] Preferably, a retaining ring is provided on the connecting rod, and the retaining ring has a larger inner diameter than the second guide channel; under normal conditions, the retaining ring is located at a side of the second guide channel close to the touch switch.

[0015] Preferably, the elastic element is disposed in the first guide channel, one end of the elastic element abuts against an end surface of the first guide channel, and the other end abuts against an inner side of the pressing block.

[0016] In a preferred embodiment of the present invention, the elastic element is a spring, which is sleeved on the connecting rod, one end of the spring abuts against the end surface of the first guide channel, and the other end abuts against the inner side of the pressing block.

[0017] In a preferred embodiment of the present invention, the diaphragm and the sealing sleeve are an integrated structure.

[0018] Preferably, the sealing sleeve is a silicone sleeve.

[0019] In a preferred embodiment of the utility model, two tact switches are provided, and two pressing members of the external pressing assembly are provided; two independent inner cavities are provided in the sealing sleeve, and each of the inner cavities is provided with the diaphragm.

[0020] Another object of the utility model is to provide an electric energy meter including the key structure.

[0021] An electric energy meter comprises the waterproof button structure.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model completely isolates the touch switch from the external pressing component by setting a diaphragm in the sealing sleeve, forming a physical partition barrier, effectively ensuring the waterproof sealing effect of the touch switch. At the same time, combined with the waterproof sealing of the pressing part and the PCB board by the sealing sleeve, the touch switch and the outside of the electric energy meter have a reliable waterproof isolation effect.

[0024] Specifically, when the touch switch needs to be triggered, the pressing member is pressed, and the elastic force of the elastic element is overcome under the action of external force to cause the pressing member to move to the side close to the touch switch. During the movement of the pressing member, the diaphragm is pressed down and causes the diaphragm to deform to a certain extent, so that the pressing member touches the touch switch on the PCB through the diaphragm to complete the triggering of the touch switch. After the key triggering operation is completed, the pressing member is released, and the pressing member automatically resets under the elastic force of the elastic element, and the diaphragm also returns to normal under its own elastic action. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is an exploded view of the waterproof button structure of the utility model.

[0027] Figure 2 It is a cross-sectional view of the waterproof button structure of the utility model.

[0028] in:

[0029] 1-pressing block, 2-connecting rod, 3-groove, 4-elastic element, 5-first guide channel, 6-mounting seat, 7-retaining ring, 8-sealing sleeve, 9-tact switch, 10-PCB board, 11-second guide channel, 12-diaphragm. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the utility model, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Example 1

[0033] See also Figure 1-Figure 2 This embodiment discloses a waterproof button structure, including a touch switch 9, an external pressing component and a sealing sleeve 8.

[0034] The touch switch 9 of this embodiment is arranged on the PCB board 10 inside the electric energy meter for signal transmission. The touch switch 9 can be fixed on the PCB board 10 by welding. Specifically, two touch switches 9 of this embodiment are provided. Of course, the number of touch switches 9 can also be adjusted according to actual conditions, and the protection scope of the utility model is not limited thereto.

[0035] The external pressing assembly includes a mounting seat 6, a pressing piece and an elastic element 4 for elastic reset; the mounting seat 6 is fixed to the outside of the electric energy meter, the inner end of the pressing piece corresponds to the touch switch 9, the pressing piece can be moved in the mounting seat 6 along the direction close to or away from the touch switch 9, and the two ends of the elastic element 4 act on the mounting seat 6 and the pressing piece respectively; the two ends of the sealing sleeve 8 are respectively abutted on the mounting seat 6 and the PCB board 10, the inner end of the pressing piece and the touch switch 9 are both located in the sealing sleeve 8; the inner cavity of the sealing sleeve 8 is provided with an elastic diaphragm 12, and the diaphragm 12 is located between the inner end of the pressing piece and the touch switch 9 to isolate and seal the pressing piece from the touch switch 9.

[0036] Correspondingly, in order to match the number of the touch switches 9 of this embodiment, the external pressing assembly of this embodiment is provided with two pressing members; two independent inner cavities are provided in the sealing sleeve 8, and each inner cavity is provided with a diaphragm 12.

[0037] Furthermore, a protruding boss is provided on one side of the mounting seat 6 of the present embodiment close to the touch switch 9, a guide channel is provided in the boss, and a pressing member is provided in the guide channel. Specifically, the boss of the present embodiment includes a first protruding portion and a second protruding portion, the second protruding portion is located at one end of the first protruding portion close to the touch switch 9, the first protruding portion is larger than the second protruding portion and a first step is formed at the connection between the two; the guide channels are respectively a first guide channel 5 and a second guide channel 11 at the corresponding positions of the first protruding portion and the second protruding portion, and the first guide channel 5 is larger than the second guide channel 11.

[0038] The pressing member includes a pressing block 1 and a connecting rod 2. The pressing block 1 is matched and arranged in the first guide channel 5. One end of the connecting rod 2 is connected to the pressing block 1. The other end of the connecting rod 2 extends toward the side close to the touch switch 9 and passes through the second guide channel 11 before extending out. A second step is provided at one end of the inner cavity of the sealing sleeve 8 away from the touch switch 9, and the second step matches the first step.

[0039] By providing such a boss and guide channel, it is convenient to cooperate with the pressing piece, so that the pressing block 1 can be embedded in the first guide channel 5 to be flush with the surface of the mounting seat 6. In addition, the connecting rod 2 can be guided to improve the stability and accuracy of key operation. The second step in the inner cavity of the sealing sleeve 8 of this embodiment matches the first step of the mounting seat 6, and the second step in the inner cavity of the sealing sleeve 8 covers the first step to improve the waterproof sealing effect.

[0040] A retaining ring 7 is provided on the connecting rod 2, and the retaining ring 7 has a larger inner diameter than the second guide channel 11; under normal conditions, the retaining ring 7 is located on the side of the second guide channel 11 close to the light touch switch 9. The retaining ring 7 of this embodiment can be an O-ring or an accessory of other materials; in order to better cooperate with the retaining ring 7, a groove 3 is provided on the connecting rod 2 of this embodiment.

[0041] The elastic element 4 of this embodiment is arranged in the first guide channel 5, one end of the elastic element 4 abuts against the end face of the first guide channel 5, and the other end abuts against the inner side of the pressing block 1. Specifically, the elastic element 4 of this embodiment adopts a spring, which is sleeved on the connecting rod 2. Under normal conditions, the elastic element 4 applies an elastic force to the pressing member to move away from the touch switch 9, so that the pressing block 1 of the pressing member is kept at the end of the first guide channel 5, which is convenient for the user to press; and because the retaining ring 7 is provided on the connecting rod 2, it can limit the pressing member and prevent it from escaping from the mounting seat 6 under the elastic force of the elastic element 4. In the external pressing assembly of this embodiment, the end face of the first guide channel 5 and the retaining ring 7 are used to limit the movement of the pressing member.

[0042] The diaphragm 12 and the sealing sleeve 8 of this embodiment are an integrated structure. Preferably, the sealing sleeve 8 is a silicone sleeve. In this embodiment, the diaphragm 12 and the sealing sleeve 8 are designed as an integrated silicone structure, which is convenient for manufacturing and processing, and convenient for installation and fixing. The sealing sleeve 8 made of silicone material has a certain elastic deformation ability, and can be pressed against the mounting seat 6 and the PCB board 10 by extrusion deformation, so as to achieve waterproof protection of the touch switch 9 and the components in the inner cavity of the sealing sleeve 8; at the same time, the diaphragm 12 is an integrated silicone material, which also has elastic properties and can be deformed when pressed by the pressing member so as to touch the touch switch 9.

[0043] This embodiment also discloses an electric energy meter, comprising the above-mentioned waterproof button structure.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A waterproof button structure, characterized in that: It includes a touch switch, an external pressing component and a sealing sleeve; The touch switch is arranged on the PCB board inside the electric energy meter and is used for signal transmission; The external pressing assembly includes a mounting seat, a pressing member, and an elastic element for elastic reset; the mounting seat is fixed to the outside of the electric energy meter, the inner end of the pressing member corresponds to the touch switch, the pressing member is movably arranged in the mounting seat, and the two ends of the elastic element act on the mounting seat and the pressing member respectively; The two ends of the sealing sleeve are respectively abutted against the mounting seat and the PCB board, and the inner end of the pressing piece and the touch switch are both located in the sealing sleeve; the inner cavity of the sealing sleeve is provided with an elastic diaphragm, and the diaphragm is located between the inner end of the pressing piece and the touch switch to isolate and seal the pressing piece from the touch switch.

2. The waterproof key structure according to claim 1, characterized in that: A protruding boss is provided on one side of the mounting seat close to the touch switch, a guide channel is provided in the boss, and the pressing member is arranged in the guide channel.

3. The waterproof key structure according to claim 2, characterized in that: The boss comprises a first protrusion and a second protrusion, the second protrusion is located at one end of the first protrusion close to the touch switch, the first protrusion is larger than the second protrusion and a first step is formed at the connection between the first protrusion and the second protrusion; The guide channel is respectively a first guide channel and a second guide channel at corresponding positions of the first protrusion and the second protrusion, and the first guide channel is larger than the second guide channel; The pressing member includes a pressing block and a connecting rod, wherein the pressing block is matched and arranged in the first guide channel, one end of the connecting rod is connected to the pressing block, and the other end of the connecting rod extends toward a side close to the touch switch and passes through the second guide channel and then extends out; A second step is provided at one end of the inner cavity of the sealing sleeve away from the touch switch, and the second step matches the first step.

4. The waterproof key structure according to claim 3, characterized in that: The connecting rod is provided with a retaining ring, and the retaining ring has a larger inner diameter than the second guide channel; under normal conditions, the retaining ring is located at a side of the second guide channel close to the touch switch.

5. The waterproof key structure according to claim 3, characterized in that: The elastic element is arranged in the first guide channel, one end of the elastic element abuts against the end surface of the first guide channel, and the other end abuts against the inner side of the pressing block.

6. The waterproof key structure according to claim 5, characterized in that: The elastic element is a spring.

7. The waterproof key structure according to any one of claims 1 to 6, characterized in that: The diaphragm and the sealing sleeve are an integrated structure.

8. The waterproof key structure according to claim 7, characterized in that: The sealing sleeve is a silicone sleeve.

9. The waterproof key structure according to any one of claims 1 to 6, characterized in that: The touch switches are provided with two, and the external pressing components are provided with two pressing pieces; the sealing sleeve is provided with two independent inner cavities, and each of the inner cavities is provided with the diaphragm.

10. An electric energy meter, characterized in that: The waterproof key structure comprises the waterproof key structure as described in any one of claims 1 to 9.

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