Membrane switch with good waterproofness

Abstract

The utility model relates to the technical field of membrane switches, in particular to a membrane switch with good waterproofness, which comprises a switch body, the switch body comprises an upper shell and a lower shell, screw blocks are fixed on the upper shell and the lower shell, the screw blocks on the upper shell and the lower shell are oppositely arranged, each pair of screw blocks is in threaded connection with a bolt, and the upper shell and the lower shell are fixed on the switch body. The upper shell is provided with a key, the lower shell further comprises an annular first sealing part which is arranged at the bottom of the upper shell, and the lower shell is provided with an annular sealing groove which is suitable for the insertion of the first sealing part; the first magnetic attraction part is arranged in the first sealing part; and the second magnetic attraction part is arranged in the sealing groove and is suitable for attracting the first magnetic attraction part. According to the utility model, the first sealing part is arranged, the first sealing part can prevent external humid air from invading into the switch body through the gap between the upper shell and the lower shell, and the second magnetic attraction part can attract the first magnetic attraction part, so that the first sealing part and the sealing groove are attached more tightly.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane switches, in particular to a membrane switch with good waterproof performance. Background Art

[0002] Membrane switch is a multi-layer structure (flat) type (non-locking) push button switch, which integrates the functions of buttons, indicating elements, instrument panels, etc. The action of the membrane switch is only realized by the vertical bounce of the elastic film. Although the elastic film has undergone millions of creeps, and the amplitude of creeps is very small, only 0.1-0.3MM, coupled with the rationality of material selection, the film material can withstand a long life of more than one million times without deformation.

[0003] Existing membrane switches basically have a waterproof function. For example, the existing patent with publication number CN218918700U proposes a waterproof membrane switch, which has an electronic heating rod arranged inside. When the membrane switch is used for a long time, the electronic heating rod can be turned on to remove the internal moisture. The rear end of the box body is provided with air dispersion holes, which can effectively disperse the internal moisture.

[0004] However, in the above technical solution, although part of the moisture inside the membrane switch can be removed by providing an electronic heating rod, if the membrane switch is left for too long, the user will easily forget the active dehumidification function of the membrane switch, which may still cause moisture inside the membrane switch. Therefore, the utility model aims to provide a membrane switch with good waterproofness that can prevent external moisture from invading the interior of the membrane switch for a long time. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art, the utility model provides a membrane switch with good waterproof performance, which can prevent external moisture from invading the interior of the membrane switch for a long time, so as to solve the problem in the prior art that users tend to forget the active dehumidification function of the membrane switch when the membrane switch is left for too long.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides a membrane switch with good waterproof performance, including a switch body, the switch body including an upper shell and a lower shell, screw blocks are fixed on the upper shell and the lower shell, the screw blocks on the upper shell and the lower shell are arranged opposite to each other, and each pair of the screw blocks are threadedly connected with a bolt, the upper shell is provided with a button, and also includes a first annular sealing part, which is arranged at the bottom of the upper shell, and an annular sealing groove suitable for inserting the first sealing part is opened on the lower shell; a first magnetic attraction part, which is arranged inside the first sealing part; and a second magnetic attraction part, which is arranged in the sealing groove and is suitable for adsorbing the first magnetic attraction part.

[0009] Optionally, a third magnetic attraction portion is further provided inside the upper shell, and the third magnetic attraction portion is suitable for adsorbing the first magnetic attraction portion.

[0010] Optionally, an area of ​​the third magnetic attraction portion facing the first magnetic attraction portion is larger than an area of ​​the second magnetic attraction portion facing the first magnetic attraction portion.

[0011] Optionally, a plurality of annular protrusions are formed on the bottom of the first sealing portion, the plurality of annular protrusions are cocentric but have different radii, and the annular protrusions are flexible.

[0012] Optionally, the interior of the annular protrusion is a hollow structure.

[0013] Optionally, a second sealing portion is provided inside the upper shell body, and the second sealing portion is annular. An annular groove block is provided inside the lower shell body, and the annular groove block is suitable for being inserted into the second sealing portion.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a membrane switch with good waterproof performance, which has the following beneficial effects:

[0016] 1. The utility model provides a first sealing part. After the first sealing part at the bottom of the upper shell is inserted into the sealing groove on the lower shell, the first sealing part will block the external humid air from invading the interior of the switch body through the gap between the upper shell and the lower shell. At this time, the second magnetic attraction part will absorb the first magnetic attraction part, so that the first sealing part and the sealing groove are more closely fitted, so that the switch body can be stored for a long time without being invaded by external humid air;

[0017] 2. The utility model provides a third magnetic attraction part. When the user needs to replace the first sealing part, the first sealing part can be directly removed from the third magnetic attraction part. After replacement, the first sealing part is placed at the bottom of the lower shell. The first magnetic attraction part in the first sealing part will be attracted by the third magnetic attraction part, which is convenient for the user to replace the first sealing part.

[0018] 3. The utility model sets the area of ​​the third magnetic attraction part toward the first magnetic attraction part to be larger than the area of ​​the second magnetic attraction part toward the first magnetic attraction part. When the user separates the upper shell and the lower shell, the first sealing part will be adsorbed on the upper shell by the third magnetic attraction part to prevent the first sealing part from being left on the lower shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural schematic diagram of the utility model is shown;

[0020] Figure 2 A schematic diagram of a three-dimensional cutaway structure of the utility model is shown;

[0021] Figure 3 Shows Figure 2 A schematic diagram of the enlarged structure at point A;

[0022] Figure 4 The utility model is shown in a three-dimensional split structure schematic diagram.

[0023] In the figure: 1. upper shell; 2. lower shell; 3. screw block; 4. bolt; 5. button; 6. first sealing part; 7. second sealing part; 8. sealing groove; 9. first magnetic part; 10. second magnetic part; 11. third magnetic part; 12. annular protrusion; 13. annular groove block; 14. switch body. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Example: See Figures 1 to 4 According to an embodiment of the utility model, a technical solution is provided: a membrane switch with good waterproof performance, including a switch body 14, the switch body 14 includes an upper shell 1 and a lower shell 2, screw blocks 3 are fixed on the upper shell 1 and the lower shell 2, the screw blocks 3 on the upper shell 1 and the lower shell 2 are arranged opposite to each other, and each pair of screw blocks 3 are threadedly connected with a bolt 4, a button 5 is provided on the upper shell 1, and also includes an annular first sealing portion 6, which is arranged at the bottom of the upper shell 1, and an annular sealing groove 8 suitable for inserting the first sealing portion 6 is opened on the lower shell 2; a first magnetic attraction portion 9, which is arranged inside the first sealing portion 6; and a second magnetic attraction portion 10, which is arranged in the sealing groove 8 and is suitable for adsorbing the first magnetic attraction portion 9.

[0026] When the user needs to store the switch body 14 for a long time using the waterproof membrane switch of the above structure, the first sealing portion 6 at the bottom of the upper shell 1 is first inserted into the sealing groove 8 on the lower shell 2. The first sealing portion 6 will block the external humid air from invading the switch body 14 through the gap between the upper shell 1 and the lower shell 2. At this time, the second magnetic portion 10 will absorb the first magnetic portion 9 to make the first sealing portion 6 and the sealing groove 8 fit more closely, so that the switch body 14 can be stored for a long time without being invaded by external humid air.

[0027] In this embodiment, a third magnetic attraction portion 11 is further provided inside the upper shell 1, and the third magnetic attraction portion 11 is suitable for adsorbing the first magnetic attraction portion 9; when the user needs to replace the first sealing portion 6, the first sealing portion 6 can be directly removed from the third magnetic attraction portion 11. After replacement, the first sealing portion 6 is placed on the bottom of the lower shell 2, and the first magnetic attraction portion 9 inside the first sealing portion 6 will be adsorbed by the third magnetic attraction portion 11, which is convenient for the user to replace the first sealing portion 6.

[0028] In this embodiment, the area of ​​the third magnetic attraction portion 11 facing the first magnetic attraction portion 9 is larger than the area of ​​the second magnetic attraction portion 10 facing the first magnetic attraction portion 9; when the user separates the upper shell 1 and the lower shell 2, the first sealing portion 6 will be adsorbed on the upper shell 1 by the third magnetic attraction portion 11 to prevent the first sealing portion 6 from being retained on the lower shell 2.

[0029] In this embodiment, the bottom of the first sealing portion 6 is protruded to form a plurality of annular protrusions 12, which are cocentric but have different radii, and are flexible. When the first sealing portion 6 is attached to the sealing groove 8, the plurality of annular protrusions 12 at the bottom of the first sealing portion 6 will prevent humid air outside the switch body 14 from entering the interior of the switch body 14, thereby further improving the moisture-proof effect of the switch body 14.

[0030] In this embodiment, the interior of the annular protrusion 12 is a hollow structure; when the first sealing portion 6 is attached to the sealing groove 8, the annular protrusion 12 with a hollow structure will be more closely attached to the sealing groove 8, further preventing external humid air from entering the switch body 14.

[0031] In this embodiment, a second sealing portion 7 is provided inside the upper shell 1, and the second sealing portion 7 is annular. An annular annular groove block 13 is provided inside the lower shell 2, and the annular groove block 13 is suitable for being inserted by the second sealing portion 7; after the user inserts the first sealing portion 6 into the sealing groove 8, the second sealing portion 7 will also be inserted into the annular groove block 13 in a matching manner, so as to achieve a layered protection effect and further prevent external humid air from entering the switch body 14.

[0032] Working principle: When the user needs to store the switch body 14 for a long time, first insert the first sealing part 6 at the bottom of the upper shell 1 into the sealing groove 8 on the lower shell 2. The first sealing part 6 will block the external humid air from invading the inside of the switch body 14 through the gap between the upper shell 1 and the lower shell 2. At this time, the second magnetic attraction part 10 will absorb the first magnetic attraction part 9 to make the first sealing part 6 and the sealing groove 8 fit more tightly, so that the switch body 14 can be stored for a long time without being invaded by external humid air; when the user needs to replace the first sealing part 6, the first sealing part 6 can be directly removed from the third magnetic attraction part 11. After replacement, the first sealing part 6 is placed on the bottom of the lower shell 2. The first magnetic attraction part 9 in the first sealing part 6 will be absorbed by the third magnetic attraction part 11, which is convenient for the user to replace the first sealing part 6; when the user When the upper shell 1 and the lower shell 2 are separated, the first sealing part 6 will be adsorbed on the upper shell 1 by the third magnetic part 11 to prevent the first sealing part 6 from being retained on the lower shell 2; when the first sealing part 6 is fitted into the sealing groove 8, a plurality of annular protrusions 12 located at the bottom of the first sealing part 6 will layer by layer protect the humid air outside the switch body 14 from entering the switch body 14, further improving the moisture-proof effect of the switch body 14; when the first sealing part 6 is fitted into the sealing groove 8, the annular protrusion 12 with a hollow structure will be more closely attached to the sealing groove 8, further preventing external humid air from entering the switch body 14; after the user inserts the first sealing part 6 into the sealing groove 8, the second sealing part 7 will also be inserted into the annular groove block 13 in a matching manner, so as to achieve a layer-by-layer protection effect, further preventing external humid air from entering the switch body 14.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A membrane switch with good waterproof performance, comprising a switch body (14), the switch body (14) comprising an upper shell (1) and a lower shell (2), a screw block (3) being fixed on the upper shell (1) and the lower shell (2), the screw blocks (3) on the upper shell (1) and the lower shell (2) being arranged opposite to each other, and each pair of the screw blocks (3) being threadedly connected with a bolt (4), the upper shell (1) being provided with a button (5), characterized in that: Also includes: An annular first sealing portion (6) is arranged at the bottom of the upper shell (1), and an annular sealing groove (8) suitable for inserting the first sealing portion (6) is provided on the lower shell (2); A first magnetic attraction portion (9), which is arranged inside the first sealing portion (6); and a second magnetic attraction portion (10), which is disposed in the sealing groove (8) and is suitable for adsorbing the first magnetic attraction portion (9).

2. A membrane switch with good waterproofness according to claim 1, characterized in that: A third magnetic attraction portion (11) is also provided inside the upper shell (1), and the third magnetic attraction portion (11) is suitable for adsorbing the first magnetic attraction portion (9).

3. A membrane switch with good waterproofness according to claim 2, characterized in that: An area of ​​the third magnetic attraction portion (11) facing the first magnetic attraction portion (9) is greater than an area of ​​the second magnetic attraction portion (10) facing the first magnetic attraction portion (9).

4. The waterproof membrane switch according to claim 1, characterized in that: The bottom of the first sealing portion (6) is protruded to form a plurality of annular protrusions (12), the plurality of annular protrusions (12) are cocentric but have different radii, and the annular protrusions (12) are flexible.

5. The waterproof membrane switch according to claim 4, characterized in that: The interior of the annular protrusion (12) is a hollow structure.

6. The waterproof membrane switch according to claim 1, characterized in that: A second sealing portion (7) is provided inside the upper shell (1), and the second sealing portion (7) is annular. An annular groove block (13) is provided inside the lower shell (2), and the annular groove block (13) is suitable for being inserted into the second sealing portion (7).

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