A push button switch

Abstract

This utility model provides a push-button switch, including a switch housing and a circuit board installed inside the switch housing. The circuit board has a first plate and a second plate. The first plate is used for soldering to wires, and the second plate has a conductive layer. A surrounding plate is provided inside the switch housing, and the surrounding plate and the switch housing enclose a first receiving cavity. After the wires and the circuit board are installed on the switch housing, glue is poured into the first receiving cavity. The glue wraps the solder joints of the wires and the circuit board, and after curing, it forms a shock-resistant buffer layer, eliminating the risk of stress cracking of the solder joints caused by vibration / temperature difference, and greatly improving the welding reliability. In addition, after the glue fills the cavity, it completely blocks the gap between the wires and the slots, and the gap between the circuit board and the switch housing, blocking the dust intrusion path from the root and significantly improving the protection level. Furthermore, the circuit board has slots formed between two adjacent conductive layers, thereby increasing the creepage distance between two adjacent conductive layers and improving safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically to a push-button switch. Background Technology

[0002] Push-button switches are widely used in handheld power tools, such as electric drills, electric grinders, electric wrenches, and electric screwdrivers.

[0003] Existing push-button switches consist of a circuit board installed inside the housing and wires connected to the circuit board and extending to the outside of the housing. The electrical connection between the wires and the circuit board is typically achieved through soldering. Under vibration, temperature changes, or mechanical stress during equipment transportation and use, the solder joints are prone to cracking or even complete detachment, causing serious malfunctions such as switch failure and signal transmission interruption. Furthermore, dust, particles, and other contaminants can easily penetrate the switch housing along the wire connection side. Long-term dust accumulation can not only contaminate the contacts and affect conductivity but may also cause short circuits in the internal circuitry, shortening the switch's lifespan. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects of existing push button switches, such as easy cracking and falling off of solder joints and short service life, so as to provide a push button switch with high reliability.

[0005] Therefore, this utility model provides a push-button switch, including a switch housing and a circuit board installed inside the switch housing. The circuit board has a first plate and a second plate. The first plate is used for soldering to a wire, and the second plate is provided with a conductive layer. A surrounding plate is provided inside the switch housing. The surrounding plate and the switch housing enclose a first receiving cavity. A first slot for inserting the wire is formed on the switch housing, and a second slot for extending the second plate is formed on the surrounding plate. After the wire and the circuit board are installed on the switch housing, glue is poured into the first receiving cavity.

[0006] The conductive layers are multiple, and the second plate has a slot formed between two adjacent conductive layers.

[0007] The conductive layer includes a first conductive layer and a second conductive layer arranged side by side, and a slot is formed on the second plate between the first conductive layer and the second conductive layer.

[0008] The first plate is provided with a plurality of welded parts spaced apart along its width direction.

[0009] The welded part is provided with a socket for inserting the wire.

[0010] The technical solution of this utility model has the following advantages:

[0011] 1. The push button switch provided by this utility model has a first receiving cavity formed by the surrounding plate and the switch housing. By injecting glue into the first receiving cavity, the glue wraps the solder joints of the wires and the circuit board. After curing, it forms a shock-resistant buffer layer, eliminating the risk of stress cracking of the solder joints caused by vibration / temperature difference, and greatly improving the welding reliability. In addition, after the glue fills the cavity, it completely blocks the gap between the wires and the slots, and the gap between the circuit board and the switch housing, blocking the dust intrusion path from the root and significantly improving the protection level.

[0012] 2. The push-button switch provided by this utility model has a slot formed on the first plate between two adjacent conductive layers, thereby increasing the creepage distance between the two adjacent conductive layers and improving safety and reliability. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the push button switch of this utility model;

[0015] Figure 2 A 3D view of the circuit board and conductive springs;

[0016] Figure 3 This is a 3D view of the circuit board.

[0017] Explanation of reference numerals in the attached drawings: 1. Switch housing; 2. Circuit board; 3. First board; 4. Second board; 5. Wire; 6. Conductive layer; 7. Enclosure; 8. First receiving cavity; 9. Slot; 10. Welding part; 11. First slot; 12. Second slot; 13. First conductive layer; 14. Second conductive layer; 15. Socket. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 this utility model 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.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Example

[0023] This embodiment provides a push-button switch, such as Figure 1 As shown, it includes a switch housing 1 and a circuit board 2 installed inside the switch housing 1.

[0024] like Figure 2 and Figure 3 As shown, the circuit board 2 has a first board 3 and a second board 4. The first board 3 is used for soldering to the conductor 5. The first board 3 has a plurality of soldering portions 10 spaced apart along its width direction. Each soldering portion 10 has a socket 15 for inserting the conductor 5. The second board 4 has a conductive layer 6, which includes a first conductive layer 13 and a second conductive layer 14 arranged side by side. The second board 4 has a slot 9 formed between the first conductive layer 13 and the second conductive layer 14.

[0025] like Figure 1 As shown, the switch housing 1 is provided with a surrounding plate 7, which together with the switch housing 1 forms a first receiving cavity 8. The switch housing 1 is formed with a first slot 11 for inserting the wire 5, and the surrounding plate 7 is formed with a second slot 12 for extending the second plate 4. After the wire 5 and the circuit board 2 are installed on the switch housing 1, glue is poured into the first receiving cavity 8.

[0026] The push-button switch provided by this utility model has a first receiving cavity 8 formed by the enclosure 7 and the switch housing 1. By filling the first receiving cavity 8 with glue, the glue wraps the solder joints of the wires and the circuit board. After curing, it forms a shock-resistant buffer layer, eliminating the risk of stress cracking of the solder joints caused by vibration / temperature difference and greatly improving the welding reliability. In addition, after the glue fills the cavity, it completely blocks the gap between the wires and the slots and the gap between the circuit board and the switch housing, blocking the dust intrusion path from the root and significantly improving the protection level.

[0027] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A push-button switch, characterized in that, The device includes a switch housing (1) and a circuit board (2) installed inside the switch housing (1). The circuit board (2) has a first plate (3) and a second plate (4). The first plate (3) is used to weld and connect to a wire (5). The second plate (4) is provided with a conductive layer (6). The switch housing (1) is provided with a surrounding plate (7). The surrounding plate (7) and the switch housing (1) enclose to form a first receiving cavity (8). The switch housing (1) is formed with a first slot (11) for inserting the wire (5). The surrounding plate (7) is formed with a second slot (12) for extending the second plate (4). After the wire (5) and the circuit board (2) are installed on the switch housing (1), glue is poured into the first receiving cavity (8).

2. The push-button switch according to claim 1, characterized in that, There are multiple conductive layers (6), and the second plate (4) has a slot (9) formed between two adjacent conductive layers (6).

3. The push-button switch according to claim 2, characterized in that, The conductive layer (6) includes a first conductive layer (13) and a second conductive layer (14) arranged side by side, and a slot (9) is formed on the second plate (4) between the first conductive layer (13) and the second conductive layer (14).

4. The push-button switch according to claim 1, characterized in that, The first plate (3) is provided with a plurality of welding parts (10) spaced apart along its width direction.

5. The push-button switch according to claim 4, characterized in that, The welding part (10) is provided with a socket (15) for inserting the wire (5).

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