Dustproof and waterproof switch

Abstract

The utility model relates to a dustproof and waterproof switch, which comprises a main shell, a key, a base, a first terminal, a second terminal, a waterproof sleeve, a spring, a movable shaft and a contact piece, the key is arranged above the main shell, the base is arranged below the main shell, the first terminal and the second terminal are arranged in the base, a boss is arranged above the main shell, a convex column is arranged below the key, and the convex column is arranged below the key. The dustproof and waterproof switch is reasonable in structural design, the boss is sleeved with the waterproof sleeve, the boss is matched with the waterproof sleeve so that external dust and water can be prevented from entering the sealing cavity, normal work of the switch is guaranteed, and the dustproof and waterproof switch is suitable for popularization and application. And the spring and the movable shaft are arranged in the convex column, and the first terminal can be electrically connected with the second terminal through the contact piece by pressing the key to enable the movable shaft to swing, so that the opening and closing switching is stable.

Description

Technical Field

[0001] The utility model relates to the field of circuit switches, in particular to a dustproof and waterproof switch. Background Art

[0002] A switch is an electronic component that can open a circuit, interrupt current, or cause it to flow to another circuit. The most common switch is an electromechanical device that can be operated by humans, which has one or more electronic contacts. When the contact is "closed", it means that the electronic contact is conducting, allowing current to flow; when the switch is "open", it means that the electronic contact is not conducting, forming an open circuit, and current is not allowed to flow. The defect of existing switches is that the waterproof and dustproof performance is average, and it is easy for external dust and water to enter the switch, affecting the normal operation of the switch. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the utility model is how to improve the waterproof and dustproof performance of the switch. The specific technical solution is as follows:

[0004] A dustproof and waterproof switch comprises a main shell, a button, a base, a first terminal, a second terminal, a waterproof sleeve, a spring, a movable shaft and a contact piece. The button is installed on the top of the main shell, the base is installed on the bottom of the main shell, the first terminal and the second terminal are installed in the base, a boss is provided on the top of the main shell, a waterproof sleeve is installed on the top of the boss, a convex column is provided under the button, a sealed chamber is provided in the base, the convex column passes through the waterproof sleeve and the boss and extends into the sealed chamber, the contact piece is installed in the sealed chamber, a spring and a movable shaft are installed inside the convex column, one end of the spring presses against the inner wall of the convex column and the other end presses against the movable shaft, the bottom of the movable shaft presses against the contact piece, the upper ends of the first terminal and the second terminal respectively extend into the sealed chamber, and pressing the button makes the first terminal electrically connected to the second terminal through the contact piece.

[0005] As a preferred solution of the utility model, a avoiding inclined surface is provided on the left side of the key. When the key is flush with the main shell, the contact piece contacts the first terminal but not the second terminal. When the key is not flush with the main shell after pressing, the contact piece contacts the first terminal and the second terminal respectively.

[0006] As a preferred solution of the utility model, the front and rear sides of the key are provided with rotating shafts, and the key is inserted into the through hole of the main housing through the rotating shaft to be rotatably mounted on the main housing.

[0007] As a preferred solution of the utility model, an indicator cover is installed on the right side of the button, and when the button is pressed so that it is not flush with the main shell, the indicator cover protrudes and is visible.

[0008] As a preferred solution of the utility model, the front and rear sides of the middle of the contact piece are provided with empty grooves, the upper end of the first terminal is inserted into the empty groove, and a contact is installed on the right side of the contact piece, and the contact is located above the second terminal.

[0009] As a preferred solution of the present invention, the base is mounted on the main housing by snap-fitting.

[0010] As a preferred solution of the utility model, the waterproof cover is provided with a circular hole for the boss to pass through, the boss is provided with an opening, the area of ​​the circular hole is smaller than the area of ​​the opening, and the waterproof cover covers part of the opening.

[0011] As a preferred solution of the utility model, the waterproof sleeve is a silicone sleeve.

[0012] Beneficial effects: The dustproof and waterproof switch of the utility model has a reasonable structural design. A waterproof cover is installed above the boss. The boss and the waterproof cover cooperate to prevent external dust and water from entering the sealed chamber, ensuring the normal operation of the switch. In addition, a spring and a movable shaft are installed inside the boss. Pressing the button to swing the movable shaft can electrically connect the first terminal to the second terminal through the contact sheet, and the opening and closing switching is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the button, spring and movable shaft of the utility model in coordination;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 yes Figure 3 Sectional view in the AA direction;

[0017] Figure 5 It is a structural diagram of the switch of the utility model when it is in the on state;

[0018] Figure 6 It is a three-dimensional diagram of the first terminal, the second terminal and the contact piece of the utility model in coordination;

[0019] Figure 7 It is a three-dimensional diagram of the main shell and the waterproof cover of the utility model in coordination. DETAILED DESCRIPTION

[0020] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings:

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have specific directions, be constructed and operated in specific directions. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected 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 the specific circumstances.

[0023] like Figures 1 to 5 As shown, a dustproof and waterproof switch comprises a main shell 1, a button 2, a base 3, a first terminal 4, a second terminal 5, a waterproof cover 6, a spring 7, a movable shaft 8 and a contact piece 9. The button 2 is installed on the top of the main shell 1, and the base 3 is installed below the main shell 1. The first terminal 4 and the second terminal 5 are installed in the base 3. A boss 1a is provided on the top of the main shell 1, and a waterproof cover 6 is mounted on the top of the boss 1a. A boss 2a is provided below the button 2, and the boss 2a is obliquely arranged. A sealed chamber 3a is provided in the base 3. The boss 2a passes through the waterproof cover 6 and the boss 1a and extends into the sealed chamber 3a. The contact piece 9 is installed in the sealed chamber 3a. A spring 7 and a movable shaft 8 are installed inside the boss 2a. One end of the spring 7 presses against the inner wall of the boss 2a and the other end presses against the movable shaft 8. The bottom of the movable shaft 8 presses against the contact piece 9. The upper ends of the first terminal 4 and the second terminal 5 extend into the sealed chamber 3a respectively. Pressing the button 2 makes the first terminal 4 electrically connected to the second terminal 5 through the contact piece 9.

[0024] like Figure 4 and 5 As shown, the left side of the button 2 is provided with an avoidance slope 2b, and a large gap is left between the avoidance slope 2b and the inner wall of the main shell 1 to facilitate pressing the button 2. When the button 2 is flush with the main shell 1, the movable shaft 8 is located on the left side, and the contact piece 9 contacts the first terminal 4 but not the second terminal 5. After pressing the button 2, the movable shaft 8 swings to the right, and the right surface of the button 2 protrudes. When the button 2 is not flush with the main shell 1, the contact piece 9 contacts the first terminal 4 and the second terminal 5 respectively, that is, the first terminal 4 is electrically connected to the second terminal 5 through the contact piece 9.

[0025] Specifically, a rotating shaft 2c is provided on the front and rear sides of the button 2. The button 2 is inserted into the through hole of the main shell through the rotating shaft 2c to be rotatably installed on the main shell 1. An indicator cover 10 is installed on the right side of the button 2. The indicator cover 10 is preferably red or yellow or other prominent colors. When the button 2 is pressed so that it is not flush with the main shell 2, the indicator cover 10 protrudes and is visible to display the status of the switch.

[0026] like Figure 6 As shown, a slot 9a is provided on the front and rear sides of the middle of the contact piece 9, the upper end of the first terminal 4 is inserted into the slot 9a, a contact 11 is installed on the right side of the contact piece 9, and the contact 11 is located above the second terminal 5. The tails of the first terminal 4 and the second terminal 5 extend from the bottom end of the base 3 for easy installation of the switch, and the base 3 is installed on the main housing 1 by snap-fitting.

[0027] like Figure 7 As shown, the waterproof cover 6 is provided with a circular hole 6a for the boss 2a to pass through, the boss 1a is provided with an opening 1b, the area of ​​the circular hole 6a is smaller than the area of ​​the opening 1b, the waterproof cover 6 covers part of the opening 1b, and the waterproof cover 6 is a silicone cover, so that even if dust and water enter the gap between the main shell 1 and the button 2, they will be blocked by the matching structure of the protruding boss 1a and the waterproof cover 6, and will not enter the sealed chamber 3a.

[0028] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the protection scope of the utility model.

Claims

1. A dustproof and waterproof switch, comprising a main housing, a button, a base, a first terminal and a second terminal, wherein the button is mounted on the upper part of the main housing, the base is mounted on the lower part of the main housing, and the first terminal and the second terminal are mounted in the base, characterized in that: It also includes a waterproof cover, a spring, a movable shaft and a contact piece. A boss is provided on the top of the main shell, a waterproof cover is installed on the top of the boss, a convex column is provided under the button, a sealed chamber is provided in the base, the convex column passes through the waterproof cover and the boss and extends into the sealed chamber, a contact piece is installed in the sealed chamber, a spring and a movable shaft are installed inside the convex column, one end of the spring presses against the inner wall of the convex column and the other end presses against the movable shaft, the bottom of the movable shaft presses against the contact piece, the upper ends of the first terminal and the second terminal respectively extend into the sealed chamber, and pressing the button makes the first terminal electrically connected to the second terminal through the contact piece.

2. The dustproof and waterproof switch according to claim 1, characterized in that: The left side of the button is provided with an avoidance slope. When the button is flush with the main housing, the contact piece contacts the first terminal but not the second terminal. When the button is pressed so that it is not flush with the main housing, the contact piece contacts the first terminal and the second terminal respectively.

3. A dustproof and waterproof switch according to claim 1 or 2, characterized in that: The front and rear sides of the key are provided with rotating shafts, and the key is inserted into the through hole of the main housing through the rotating shaft to realize rotational installation on the main housing.

4. A dustproof and waterproof switch according to claim 1 or 2, characterized in that: An indication cover is installed on the right side of the button. When the button is pressed so that it is not flush with the main housing, the indication cover is protruded and visible.

5. The dustproof and waterproof switch according to claim 1, characterized in that: Empty slots are arranged at the front and rear sides of the middle of the contact piece, the upper end of the first terminal is inserted into the empty slot, and a contact point is installed on the right side of the contact piece, and the contact point is located above the second terminal.

6. The dustproof and waterproof switch according to claim 1, characterized in that: The base is mounted on the main housing by snap-fitting.

7. The dustproof and waterproof switch according to claim 1, characterized in that: The waterproof cover is provided with a circular hole for the convex column to pass through, the convex platform is provided with an opening, the area of ​​the circular hole is smaller than the area of ​​the opening, and the waterproof cover covers part of the opening.

8. The dustproof and waterproof switch according to claim 7, characterized in that: The waterproof cover is a silicone cover.

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