Waterproof microswitch

Abstract

The utility model discloses a waterproof microswitch, which comprises a base, a shell is sleeved above the surface of the base, a plurality of connecting terminals are fixedly mounted at the bottom of the base, one of the connecting terminals penetrates through the base and is positioned above the surface of the base, the top of the connecting terminal is fixedly connected with a first connecting sheet which is bent inwards, and the first connecting sheet is fixedly connected with a second connecting sheet which is bent inwards. One side of the top surface of the base is fixedly connected with a contact plate, the contact plate is connected with the connecting terminal, the surface of the contact plate is fixedly connected with a second connecting sheet at a position opposite to the first connecting sheet, the surfaces of the first connecting sheet and the second connecting sheet are fixedly connected with static contacts, and the top surface of the shell is provided with a connecting hole. A clamping groove is formed in the position, located on the outer side of the connecting hole, of the top surface of the shell, a waterproof cap is clamped in the clamping groove, a button is movably connected into the connecting hole, and the top of the waterproof cap sleeves the surface of the outer wall of the button; in combination with the structural design of the utility model, the problems proposed in the background technology are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, specifically a waterproof micro switch. Background Technology

[0002] A micro switch is a type of switch with a small contact gap and a quick-acting mechanism that performs switching action with a specified stroke and force. It is covered by a housing and has a drive rod on the outside. Because the contact gap of the switch is relatively small, it is called a micro switch, also known as a sensitive switch. Waterproof micro switches are one type of micro switch.

[0003] However, existing waterproof micro switches have the following drawbacks during use: the connection between the existing stationary contact and the connection terminal is relatively simple, which leads to a decrease in the conductivity of the stationary contact and the connection terminal during use. At the same time, the existing micro switches have poor waterproofing at the connection between the button and the housing. Under long-term use, water can easily enter the switch, thereby reducing the product's service life. Summary of the Invention

[0004] The purpose of this utility model is to provide a waterproof micro switch to solve the following defects of the existing waterproof micro switches mentioned in the background art during use: the connection method between the existing stationary contact and the connecting terminal is relatively simple, which leads to a reduction in the conductivity of the stationary contact and the connecting terminal during use. At the same time, the existing micro switch has poor waterproof performance at the connection between the button and the housing. Under long-term use, water is easy to enter the switch, thereby reducing the service life of the product.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof micro switch, including a base, a housing fitted on the surface of the base, a plurality of connecting terminals fixedly installed at the bottom of the base, and one of the connecting terminals passing through the base and located above the surface of the base, a first connecting piece bent inwardly fixedly connected to the top of the connecting terminal, a contact plate fixedly connected to one side of the top surface of the base, and the contact plate being connected to the connecting terminal, a second connecting piece fixedly connected to the surface of the contact plate at a position opposite to the first connecting piece, stationary contacts fixedly connected to the surfaces of both the first and second connecting pieces, a connecting hole opened on the top surface of the housing, a slot opened on the top surface of the housing outside the connecting hole, a waterproof cap being snapped into the slot, a button being movably connected in the connecting hole, and the top of the waterproof cap fitting onto the outer surface of the button.

[0006] Preferably, a support plate is fixedly connected to the middle of the top surface of the base, and a movable groove is provided on the side of the support plate near the contact plate. A movable contact assembly is movably connected to the movable groove, and the front end of the movable contact assembly is movably in contact between two stationary contacts. A support member is abutted and connected to the other side of the surface of the support plate.

[0007] Preferably, a notch is provided in the middle of the surface of the support plate, and a tension spring is provided in the notch. One end of the tension spring is hooked to the rear end of the moving contact assembly, and the other end of the tension spring is hooked to the lower part of the support surface.

[0008] Preferably, the top of the support member abuts against the bottom of the button.

[0009] Preferably, an elastic lever is connected to the top surface of the housing away from the connection hole, and the bottom surface of the elastic lever is in contact with the top surface of the button.

[0010] Beneficial effects

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] In combination with the structural design of this utility model, compared with the existing one, a first connecting piece is added to the static contact position of the connecting terminal. The static contact is riveted or welded to the first connecting piece, which increases the conductivity. At the same time, the waterproof cap is inserted into the slot of the housing, and the lower end of the waterproof cap is pressed tightly to the housing by heat riveting to prevent water leakage and effectively improve the waterproof performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] The correspondence between the labels and component names in the attached figures is as follows:

[0017] 1. Housing; 2. Base; 3. Connecting terminal; 4. Waterproof cap; 5. Button; 6. Elastic lever; 7. Support component;

[0018] 8. Tension spring; 11. Connecting hole; 12. Slot; 21. Contact plate; 22. First connecting piece;

[0019] 23. Second connecting piece; 24. Stationary contact; 25. Moving contact assembly; 26. Support plate; 261. Movable slot;

[0020] 262. Gap. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] like Figure 1-3 This is a schematic diagram of a waterproof micro switch according to a preferred embodiment of the present invention. In this embodiment, the waterproof micro switch includes a base 2, a housing 1 sleeved on the surface of the base 2, and multiple connecting terminals 3 fixedly installed at the bottom of the base 2. One of the connecting terminals 3 passes through the base 2 and is located above the surface of the base 2. A first connecting piece 22 bent inwards is fixedly connected to the top of the connecting terminal 3. A contact plate 21 is fixedly connected to one side of the top surface of the base 2, and the contact plate 21 is connected to the connecting terminal 3. A second connecting piece 23 is fixedly connected to the surface of the contact plate 21 at a position opposite to the first connecting piece 22. Static contacts 24 are fixedly connected to the surfaces of both the first connecting piece 22 and the second connecting piece 23. Compared with existing designs, the position of the static contact of the connecting terminal is increased. A first connecting piece 22 is added, and the stationary contact 24 is fixed to the first connecting piece 22 by riveting or welding, which increases the conductivity. A connecting hole 11 is opened on the top surface of the housing 1, and a slot 12 is opened on the top surface of the housing 1 outside the connecting hole 11. A waterproof cap 4 is snapped into the slot 12. The waterproof cap 4 is inserted into the slot 12 of the housing 1, and the lower end of the waterproof cap 4 is snapped into the slot 12 and pressed tightly against the housing 1 by hot riveting to prevent water leakage and effectively improve waterproofness. A button 5 is movably connected in the connecting hole 11, and the top of the waterproof cap 4 is sleeved on the outer wall surface of the button 5 to increase the waterproofness between the waterproof cap 4 and the button 5. Combined with the structural design of this utility model, the problems mentioned in the background art are effectively solved, and the practicality is better.

[0024] In this embodiment, a support plate 26 is fixedly connected to the center of the top surface of the base 2. A movable groove 261 is provided on the side of the support plate 26 near the contact plate 21, and a movable contact assembly 25 is movably connected to the movable groove 261. The front end of the movable contact assembly 25 movably contacts the two stationary contacts 24. A support member 7 is abutted and connected on the other side of the surface of the support plate 26. A notch 262 is provided in the center of the surface of the support plate 26, and a tension spring 8 is provided in the notch 262. One end of the tension spring 8 is hooked to the movable contact assembly 26. The rear end of button 5 and the other end of spring 8 are hooked to the underside of the surface of support member 7, and the top of support member 7 abuts against the bottom of button 5. When button 5 is pressed down, support member 7 rotates around support plate 26. During the rotation of support member 7, its upper part moves downward and its lower part moves upward and pulls spring 8. After spring 8 pulls moving contact assembly 25, the moving contact at the front end of moving contact assembly 25 touches the stationary contact on the first connecting piece 22, realizing the closing and opening of waterproof micro switch.

[0025] In this embodiment, an elastic lever 6 is connected to the top surface of the housing 1 away from the connection hole 11, and the bottom surface of the elastic lever 6 is in contact with the top surface of the button 5. The structure is designed so that the operator can press the elastic lever 6 to make the button 5 move in the connection hole 11.

[0026] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A waterproof micro switch, comprising a base (2), wherein a housing (1) is sleeved on the surface of the base (2), characterized in that: The base (2) has multiple connecting terminals (3) fixedly installed at its bottom, and one of the connecting terminals (3) passes through the base (2) and is located above the surface of the base (2). The top of the connecting terminal (3) is fixedly connected to an inwardly bent first connecting piece (22). A contact plate (21) is fixedly connected to one side of the top surface of the base (2), and the contact plate (21) is connected to the connecting terminal (3). The surface of the contact plate (21) is fixedly connected to a second connecting piece (23) at a position opposite to the first connecting piece (22). Static contacts (24) are fixedly connected to the surfaces of the first connecting piece (22) and the second connecting piece (23). A connecting hole (11) is opened on the top surface of the housing (1). A slot (12) is opened on the top surface of the housing (1) outside the connecting hole (11). A waterproof cap (4) is snapped into the slot (12). A button (5) is movably connected into the connecting hole (11). The top of the waterproof cap (4) is sleeved on the outer wall surface of the button (5).

2. The waterproof micro switch according to claim 1, characterized in that: A support plate (26) is fixedly connected to the middle of the top surface of the base (2). The support plate (26) has a movable groove (261) on the side near the contact plate (21). The movable groove (261) is movably connected to a moving contact assembly (25). The front end of the moving contact assembly (25) is in contact with two stationary contacts (24). A support member (7) is abutted and connected to the other side of the surface of the support plate (26).

3. The waterproof micro switch according to claim 2, characterized in that: The support plate (26) has a notch (262) in the middle of its surface. A tension spring (8) is provided in the notch (262). One end of the tension spring (8) is hooked to the rear end of the moving contact assembly (25), and the other end of the tension spring (8) is hooked to the lower part of the support member (7).

4. The waterproof micro switch according to claim 3, characterized in that: The top of the support (7) abuts against the bottom of the button (5).

5. A waterproof micro switch according to claim 1, characterized in that: The top surface of the housing (1) is connected to an elastic lever (6) at the end away from the connection hole (11), and the bottom surface of the elastic lever (6) is in contact with the top surface of the button (5).

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