Waterproof and dustproof integrated microswitch structure
By designing a new integrated shell and using a silicone waterproof cap and sealing glue, the problem that existing micro switches cannot meet the waterproof and dustproof function in outdoor applications is solved, and efficient waterproof and dustproof effect is achieved, ensuring the normal operation and long life of the switch.
Patent Information
- Application Number
- CN202421464487.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-25
AI Technical Summary
When used outdoors, existing micro switches cannot meet the waterproof and dustproof function due to structural defects, resulting in water and dust entering the shell and corroding the metal structure, which may cause electrical short circuits or corrosion and breakage of internal metal parts, affecting the normal operation of the switch.
A waterproof and dust-proof integrated micro switch is designed, adopting a new integrated housing structure to eliminate the matching gap between the split housing, and achieve the sealing effect through silicone waterproof cap and sealing glue, achieving the waterproof and dustproof level of IP67.
It significantly improves the waterproof and dustproof performance of the micro switch, avoids water and dust entering the shell, protects the internal metal structure, and ensures the normal operation and long life of the switch.
Smart Images
Figure CN222720256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric switches, in particular to a waterproof and dustproof integrated micro switch. Background Art
[0002] Micro switches are widely used and play a role in controlling the connection and disconnection of circuits in electronic equipment circuits. They usually have a fast-acting pressing button and corresponding switching contacts. A specified force is applied to the button to push it through a specified stroke to achieve the conversion of the switch's open and closed states. Because the spacing between the switch's switching contacts is relatively small, it is called a micro switch. There is a matching gap between the conventional micro switch button and the switch housing. The outer housing of the switch is also a split housing. The base body of the switch is generally set in the upper housing, and the metal pins of the base body are exposed. There is also a matching gap between the upper housing and the lower housing. When used outdoors, due to its structural defects, it does not meet the waterproof and dustproof functions. Water and dust can easily enter the housing through the matching gap, and the water and dust in the housing will corrode the metal contacts, moving plates, tension springs and other metal structures in the housing. When there is a lot of water inflow, it may also cause an electrical short circuit or cause corrosion and fracture of internal metal parts, thereby affecting the normal operation of the switch. Utility Model Content
[0003] The purpose of the utility model is to design a waterproof and dustproof integrated micro switch structure in order to solve the above problems.
[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0005] The utility model provides a waterproof and dustproof integrated micro switch structure, comprising an integrated shell, a button, a silicone waterproof cap, a base body and a bottom sealing area.
[0006] As a preferred embodiment of the utility model, a through hole is provided on the upper portion of the integrated shell, and a mounting groove is provided on the edge of the through hole, one end of the button lift is located inside the integrated shell, and the other end of the button lift extends out of the integrated shell through the button lift through hole; the silicone waterproof cap is installed on the upper end of the button lift extending out of the integrated shell, the base body is arranged in the integrated shell cavity and below the button lift, and the bottom sealing area is arranged below the base body.
[0007] As a preferred embodiment of the utility model, the base body is provided with a movable contact arm, a normally open contact, a normally closed contact, a movable contact arm bracket, a tension spring, and a metal pin. The movable contact arm bracket contacts the lower end of the button, one end of the movable contact arm is arranged on the movable contact arm bracket, the other end of the movable contact arm contacts or separates from the normally open contact and the normally closed contact, and the movable contact arm is reset by the tension spring, and the metal pin is arranged at the lower end of the base body and embedded in the bottom sealing area.
[0008] As a preferred embodiment of the utility model, the silicone waterproof cap is installed on the upper end of the button extending from the integrated shell, and the lower end of the silicone waterproof cap forms an edge, and the edge is arranged in the installation groove of the integrated shell through hole, and the plastic structure on the integrated shell through hole is hot riveted to tighten the lower edge of the silicone waterproof cap located in the installation groove, so that the cavity is sealed.
[0009] As a preferred embodiment of the present invention, sealing glue is poured from the bottom of the integrated shell to the sealing area at the bottom of the base body to achieve a waterproof and dustproof effect.
[0010] As a preferred embodiment of the present invention, a metal spring is fixedly provided on the left end of the upper end surface of the integrated shell, and the metal spring is arranged to be inclined upward from left to right, and the right end of the metal spring is located directly above the button.
[0011] As a preferred embodiment of the present invention, the metal spring piece is made of stainless steel or plastic, and the thickness of the metal spring piece is 0.5-1.5 mm.
[0012] The beneficial effects of the utility model are:
[0013] 1. New integrated shell: adopts a new integrated shell structure. First, the entire integrated shell is formed, and then the entire base body and its metal pins, buttons, and the lower edge of the silicone waterproof cap are set in the integrated shell cavity, eliminating the redundant matching gap between the split shells, thereby improving the waterproof and dustproof performance.
[0014] 2. Sealing the silicone waterproof cap by hot riveting: The lower edge of the silicone insulating cap is installed in the internal mounting groove of the through hole of the integrated shell. The edge of the silicone waterproof cap is pressed and sealed by hot riveting the plastic structure of the through hole on the shell on the edge of the silicone waterproof cap, thereby achieving the waterproof and dustproof function.
[0015] 3. Sealing glue potting: Use potting glue with strong adhesion to the shell material, and fill the space from the bottom of the integrated shell to the sealing area at the bottom of the base body with sealing glue to achieve waterproof and dustproof functions.
[0016] The micro switch using this technical solution can meet the IP67 waterproof and dustproof grade requirements, greatly improving the waterproof and dustproof performance of the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic cross-sectional structure diagram of the waterproof and dustproof integrated micro switch structure of the utility model.
[0018] Figure 2 This is a schematic diagram of the structure of the riveting area of the silicone waterproof cap of the waterproof and dustproof integrated micro switch structure of the utility model.
[0019] Figure 3 The figure is a schematic diagram of the appearance structure of the waterproof and dustproof integrated micro switch structure of the utility model.
[0020] In the figure: 1-silicone waterproof cap, 2-button, 3-integrated shell, 4-moving contact arm bracket, 5-base body, 6-metal pin, 7-bottom sealing area, 8-tension spring, 9-normally closed contact, 10-moving contact arm, 11-normally open contact, 12-metal spring. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0024] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships that are usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.
[0025] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.
[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.
[0028] As attached Figure 1-3 As shown, this embodiment provides a waterproof and dustproof integrated micro switch, including an integrated housing 3, a push button 2, a silicone waterproof cap 1, a base body 5 and a bottom sealing area 7. The upper part of the integrated housing 3 is provided with a through hole, and the edge of the through hole is provided with a mounting groove. One end of the push button 2 is located in the integrated housing 3, and the other end of the push button 2 extends out of the integrated housing 3 through the push button through hole; the silicone waterproof cap 1 is installed at the upper end of the push button 2 extending out of the integrated housing 3, the base body 5 is arranged in the cavity of the integrated housing 3 and arranged below the push button 2, and the bottom sealing area 7 is arranged below the base body 5.
[0029] As a preferred embodiment of the utility model, a moving contact arm 10, a normally open contact 11, a normally closed contact 9, a moving contact arm bracket 4, a tension spring 8, and a metal pin 6 are provided on the base body 5; the moving contact arm bracket 4 is in contact with the lower end of the button 2, one end of the moving contact arm 10 is provided on the moving contact arm bracket 4, and the other end of the moving contact arm is in contact with or separated from the normally open contact 11 and the normally closed contact 9, and the moving contact arm 10 is reset by the tension spring 8, and the metal pin 6 is provided at the lower end of the base body 5 and is embedded in the bottom sealing area 7.
[0030] As a preferred embodiment of the present invention, the silicone waterproof cap 1 is installed on the upper end of the push-button 2 extending out of the integrated housing 3, and the lower end of the silicone waterproof cap 1 forms an edge, which is arranged in the installation groove of the through hole of the integrated housing 3, and the lower edge of the silicone waterproof cap 1 located in the installation groove is pressed by riveting the plastic structure on the through hole of the integrated housing 3, so that the cavity is sealed;
[0031] As a preferred embodiment of the present utility model, sealing glue is poured from below the integrated housing 3 to the sealing area 7 at the bottom of the base body to achieve a waterproof and dustproof effect.
[0032] As a preferred embodiment of the utility model, a metal spring 12 is fixedly provided on the left end of the upper end surface of the integrated shell 3. The metal spring 12 is tilted upward from left to right, and the right end of the metal spring 12 is located directly above the button 2.
[0033] As a preferred embodiment of the present invention, the metal spring piece 12 is made of stainless steel or plastic, and the thickness of the metal spring piece 12 is 0.5-1.5 mm.
[0034] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.
Claims
1. A waterproof and dustproof integrated micro switch structure, characterized in that: The invention comprises an integrated shell (3), a push button (2), a silicone waterproof cap (1), a base body (5) and a bottom sealing area (7); the upper part of the integrated shell (3) is provided with a through hole, and the edge of the through hole is provided with a mounting groove; one end of the push button (2) is located in the integrated shell (3); the silicone waterproof cap (1) is installed at the upper end of the push button (2) extending out of the integrated shell (3); the other end of the push button (2) extends out of the integrated shell (3) through the through hole; the base body (5) is arranged in the cavity of the integrated shell (3) and below the push button (2); and the bottom sealing area (7) is arranged below the base body (5).
2. The waterproof and dustproof integrated micro switch structure according to claim 1, characterized in that: The base body (5) is provided with a moving contact arm (10), a normally open contact (11), a normally closed contact (9), a moving contact arm bracket (4), a tension spring (8), and a metal pin (6); the moving contact arm bracket (4) is in contact with the lower end of the button (2); one end of the moving contact arm (10) is arranged on the moving contact arm bracket (4); the other end of the moving contact arm is in contact with or separated from the normally open contact (11) and the normally closed contact (9); and the moving contact arm (10) is reset by the tension spring (8); and the metal pin (6) is arranged at the lower end of the base body (5) and is embedded in the bottom sealing area (7).
3. The waterproof and dustproof integrated micro switch structure according to claim 1 or 2, characterized in that: The lower end of the silicone waterproof cap (1) forms an edge, and the edge is arranged in the installation groove of the through hole of the integrated shell (3). The plastic structure on the through hole of the integrated shell (3) is hot-riveted to tighten the lower edge of the silicone waterproof cap (1) located in the installation groove, so that the cavity is sealed.
4. The waterproof and dustproof integrated micro switch structure according to claim 1, characterized in that: Sealing glue is poured into the sealing area (7) from below the integrated shell (3) to the bottom of the base body to achieve a waterproof and dustproof effect.
5. The waterproof and dustproof integrated micro switch structure according to claim 1, characterized in that: A metal spring (12) is fixedly arranged at the left end of the upper end surface of the integrated shell (3), and the metal spring (12) is arranged to be tilted upward from left to right, and the right end of the metal spring (12) is located directly above the button (2).
6. The waterproof and dustproof integrated micro switch structure according to claim 5, characterized in that: The metal spring (12) is made of stainless steel or plastic, and the thickness of the metal spring (12) is 0.5-1.5 mm.