Normally-open switch with dustproof and waterproof functions

Abstract

The utility model discloses a normally-on switch with dustproof and waterproof functions, which comprises a shell and a button inserted in the outer wall of the top of the shell, and further comprises a second waterproof mechanism used for further waterproofing of the normally-on switch; a first mounting block is arranged on the outer wall of the top of the shell, a cavity is formed in the first mounting block, holes which are annularly distributed at equal intervals are formed in the circumferential outer wall of the first mounting block, two first sealing strips are connected to the circumferential inner wall of the first mounting block, and the button is inserted into the outer wall of the top of the first mounting block; and the two first sealing strips are in contact with the outer wall of the button. The normally-on switch with dustproof and waterproof functions provided by the utility model has the technical effect of prolonging the service life of the normally-on switch.

Description

Technical Field

[0001] The utility model relates to the technical field of dustproof and waterproof switches, in particular to a normally-on switch with dustproof and waterproof functions. Background Art

[0002] A normally-on switch is a switch that is normally on when not triggered. This type of switch is usually used in circuits that need to remain connected or powered. A normally-on switch with dust and waterproof function can remain normally on in harsh environments due to its special sealing design, and prevent dust and moisture from affecting the circuit.

[0003] Current normally-on switches are provided with a button for pressing operation, but conventional normally-on switches usually have a gap between the button and the movable part of the normally-on switch housing, and water and dust can easily enter the housing through the gap. If water and dust enter the housing through the gap, they will corrode other components in the housing, affecting the normal use of the normally-on switch and reducing the service life of the normally-on switch. Utility Model Content

[0004] The utility model discloses a normally-on switch with dustproof and waterproof functions, aiming to solve the technical problem that a gap exists at the movable part between a button of the normally-on switch and a shell of the normally-on switch, and water and dust easily enter the shell through the gap. If water and dust invade the shell through the gap, other components in the shell will be corroded, thus affecting the normal use of the normally-on switch and reducing the service life of the normally-on switch.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A normally-on switch with dustproof and waterproof functions, comprising a housing and a button plugged into the top outer wall of the housing, and further comprising:

[0007] The second waterproof mechanism is used for further waterproofing of the normally open switch;

[0008] A first mounting block is provided on the top outer wall of the shell, a cavity is opened inside the first mounting block, and holes distributed in annular shapes at equal distances are opened on the circumferential outer wall of the first mounting block. Two first sealing strips are connected to the circumferential inner wall of the first mounting block, and the button is inserted on the top outer wall of the first mounting block, and the two first sealing strips are in contact with the outer wall of the button.

[0009] In this solution, two first sealing strips are used to block external water and dust. If water passes through the top first sealing strip, it will be blocked by the other first sealing strip at the bottom and discharged through the hole. If a little water still passes through the bottom first sealing strip, it will be blocked by the second waterproof mechanism. It is difficult for water and dust to enter the housing through the gap, thereby preventing them from affecting the normal use of the normally-on switch and increasing the service life of the normally-on switch.

[0010] In a preferred solution, the second waterproof mechanism includes a second mounting block installed inside the shell, the circumferential inner wall of the second mounting block close to the top is connected to a second sealing strip, a notch is opened on one side outer wall of the shell, the notch is used in conjunction with the second mounting block, the button is inserted into the top outer wall of the second mounting block, and the second sealing strip is in contact with the outer wall of the button.

[0011] Since there is still a small possibility that water can enter the shell through the entire first sealing strip, a second mounting block is added inside the shell for further waterproofing. The remaining water is blocked by the second sealing strip and guided to flow out from the gap, further preventing water and dust from entering the shell through the gap.

[0012] As can be seen from the above, a normally-on switch with dustproof and waterproof functions includes a housing and a button plugged into the top outer wall of the housing, and also includes:

[0013] The second waterproof mechanism is used for further waterproofing of the normally open switch;

[0014] The top outer wall of the housing is provided with a first mounting block, a cavity is formed inside the first mounting block, holes are formed on the circumferential outer wall of the first mounting block and are distributed in an annular manner with equal distances, two first sealing strips are connected to the circumferential inner wall of the first mounting block, the button is plugged into the top outer wall of the first mounting block, and the two first sealing strips are in contact with the outer wall of the button. The normally-on switch with dustproof and waterproof functions provided by the utility model has the technical effect of increasing the service life of the normally-on switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model discloses a normally-on switch with dust and water-proof functions.

[0016] Figure 2 The utility model provides a schematic diagram of the second mounting block installation structure of a normally-on switch with dust and water-proof functions.

[0017] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of a first mounting block of a normally-on switch with dustproof and waterproof functions.

[0018] Figure 4 This is an enlarged structural schematic diagram of a normally-on switch with dust and water-proof functions at position A proposed by the utility model.

[0019] In the accompanying drawings: 1. housing; 2. button; 3. first mounting block; 4. second mounting block; 5. hole; 6. notch; 7. second sealing strip; 8. first sealing strip; 9. cavity. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0021] The utility model discloses a normally-on switch with dustproof and waterproof functions, which is mainly used in conventional normally-on switches. Usually, there is a gap between the button and the movable part of the normally-on switch shell, and water and dust can easily enter the shell through the gap. If water and dust invade the shell through the gap, they will corrode other components in the shell, affecting the normal use of the normally-on switch and reducing the service life of the normally-on switch.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A normally-on switch with dustproof and waterproof functions comprises a housing 1 and a button 2 plugged into the top outer wall of the housing 1, and further comprises:

[0023] The second waterproof mechanism is used for further waterproofing of the normally open switch;

[0024] A first mounting block 3 is fixedly mounted on the top outer wall of the shell 1, a cavity 9 is opened inside the first mounting block 3, and holes 5 distributed in annular shapes at equal distances are opened on the circumferential outer wall of the first mounting block 3. Two first sealing strips 8 are fixedly connected to the circumferential inner wall of the first mounting block 3, and an opening of the cavity 9 near the center is located between the two first sealing strips 8. The button 2 is inserted into the top outer wall of the first mounting block 3, and the two first sealing strips 8 are in contact with the outer wall of the button 2.

[0025] The bottom inner wall of the first mounting block 3 is arranged as an inclined structure, and the lowest position of the bottom inner wall of the first mounting block 3 is flush with the lowest position of the hole 5, which is conducive to the rapid and effective discharge of water entering from the gap.

[0026] During specific use, water and dust will be isolated by the first sealing strip 8 at the top and cannot enter through the gap between the button 2 and the shell 1. If a small amount of water passes through the top first sealing strip 8, it will still be blocked by another first sealing strip 8 at the bottom. After the remaining water is blocked by the first sealing strip 8 at the bottom, it will flow around along the bottom inner wall of the first mounting block 3 and finally be discharged from the hole 5. It is difficult for water and dust to enter the shell 1 through the gap, thereby preventing them from affecting the normal use of the normally-on switch and improving the service life of the normally-on switch.

[0027] Reference Figure 1 and Figure 2 In a preferred embodiment, the second waterproof mechanism includes a second mounting block 4 fixedly mounted inside the shell 1, and a second sealing strip 7 is fixedly connected to the circumferential inner wall of the second mounting block 4 near the top. A notch 6 is opened on the outer wall of one side of the shell 1, and the notch 6 is used in conjunction with the second mounting block 4. The button 2 is inserted into the top outer wall of the second mounting block 4, and the second sealing strip 7 is in contact with the outer wall of the button 2.

[0028] The top outer wall of the second mounting block 4 is set to a "V" shaped inclined structure, which is conducive to collecting water and guiding the incoming water to drain out.

[0029] The first sealing strip 8 and the second sealing strip 7 are both made of rubber and have good sealing and waterproof properties.

[0030] Among them, a guide pipe (this structure is not shown) is provided at the gap 6 to discharge water flowing out of the gap 6.

[0031] Specifically, if a very small amount of water still passes through the two first sealing strips 8 and enters the interior of the shell 1 along the gap, it will be blocked by the second sealing strip 7 and flow out through the notch 6 along the inclined "V"-shaped groove at the top of the second mounting block 4, and finally discharged to the outside of the shell 1 through the guide pipe (this structure is not shown), further preventing water and dust from entering the shell 1 through the gap.

[0032] Working principle: When in use, water and dust will be isolated by the first sealing strip 8 at the top and cannot enter through the gap between the button 2 and the shell 1. If a small amount of water passes through the top first sealing strip 8, it will still be blocked by the other first sealing strip 8 at the bottom. After the remaining water is blocked by the first sealing strip 8 at the bottom, it will flow around along the bottom inner wall of the first mounting block 3 and finally be discharged from the hole 5. If there is still a very small amount of water that passes through the two first sealing strips 8 and enters the inside of the shell 1 along the gap, it will be blocked by the second sealing strip 7 and flow out through the notch 6 along the inclined "V"-shaped groove at the top of the second mounting block 4, and finally be discharged to the outside of the shell 1 through the guide pipe.

[0033] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A normally-on switch with dustproof and waterproof functions, comprising a housing (1) and a button (2) plugged into the top outer wall of the housing (1), characterized in that: Also includes: The second waterproof mechanism is used for further waterproofing of the normally open switch; The top outer wall of the shell (1) is provided with a first mounting block (3), the interior of the first mounting block (3) is provided with a cavity (9), the circumferential outer wall of the first mounting block (3) is provided with holes (5) distributed in an annular pattern at equal distances, and the circumferential inner wall of the first mounting block (3) is connected to two first sealing strips (8).

2. A normally open switch with dust and water proof function according to claim 1, characterized in that: An opening of the cavity (9) close to the central position is located between the two first sealing strips (8).

3. A normally open switch with dust and water proof function according to claim 2, characterized in that: The bottom inner wall of the first mounting block (3) is arranged as an inclined structure, and the lowest position of the bottom inner wall of the first mounting block (3) is flush with the lowest position of the hole (5).

4. A normally open switch with dust and water proof function according to claim 3, characterized in that: The button (2) is plugged into the top outer wall of the first mounting block (3), and the two first sealing strips (8) are in contact with the outer wall of the button (2).

5. A normally open switch with dust and water proof function according to claim 1, characterized in that: The second waterproof mechanism comprises a second mounting block (4) mounted inside the housing (1); a second sealing strip (7) is connected to a circumferential inner wall of the second mounting block (4) close to the top; a notch (6) is formed on an outer wall of one side of the housing (1); the notch (6) is used in conjunction with the second mounting block (4).

6. A normally open switch with dust and water proof function according to claim 5, characterized in that: The top outer wall of the second mounting block (4) is arranged as a "V"-shaped inclined structure.

7. A normally open switch with dust and water proof function according to claim 6, characterized in that: The button (2) is plugged into the top outer wall of the second mounting block (4), and the second sealing strip (7) is in contact with the outer wall of the button (2).

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