Push type switch

Abstract

The utility model belongs to the technical field of switches, in particular to a push type switch, which comprises a base, a circuit board is arranged in the base, an input terminal and an output terminal are respectively arranged at two ends of the circuit board, and a switch assembly is arranged between the input terminal and the output terminal. The switch assembly comprises a contact frame connected with the input terminal and a static contact piece connected with the output terminal, the static contact piece is provided with a static contact, the contact frame is further provided with a movable springboard, the springboard is provided with a movable contact, the movable contact is located above the static contact, a button is further arranged in the base, the lower end of the button abuts against the upper portion of the springboard, and the lower end of the button abuts against the lower portion of the springboard. The upper end of the button extends out of the base, the button moves downwards to control the springboard to fall down and enable the movable contact on the springboard to be in contact with the static contact on the static contact piece to achieve electrification, and the push type switch is simple in structure and can better enable the button not to deviate when the button is pressed downwards.

Description

Technical Field

[0001] The utility model belongs to the technical field of switches, and particularly refers to a push-button switch. Background Art

[0002] There are many types of electric tool switches. Among them, there is a push-button switch which has a static contact and a moving contact inside. Pressing the button can drive the moving contact to move and make it contact with the static contact to connect. Pressing the button again and lifting the pressing button can make the moving contact lift, so that the moving contact and the static contact are mechanically disconnected. Although this push-button switch is simple to operate, when pressing the button, due to the uncontrollability of the button, the button is prone to position deviation during the downward pressing process. After long-term pressing, the lower end of the button will not be able to accurately press the spring to make the moving contact complete contact with the static contact. Therefore, there is a need for a push-button switch that can better prevent the button from deviating when pressed. Summary of the Invention

[0003] The purpose of the utility model is to provide a push-button switch with a simple structure that can better prevent the button from deviating when pressed.

[0004] The purpose of the utility model is realized as follows:

[0005] A push-button switch includes a base. A circuit board is provided inside the base. Input terminals and output terminals are respectively provided at both ends of the circuit board. A switch assembly is provided between the input terminal and the output terminal. The switch assembly includes a contact holder connected to the input terminal and a static contact piece connected to the output terminal. A static contact is provided on the static contact piece. A movable spring plate is also provided on the contact holder. A moving contact is provided on the spring plate. The moving contact is located above the static contact. A button is also provided inside the base. The lower end of the button abuts against the upper side of the spring plate. The upper end of the button extends outside the base. When the button moves downward, it can control the spring plate to fall and make the moving contact on the spring plate contact with the static contact on the static contact piece to achieve power-on. At least one guiding part is formed on the button. A vertically arranged guiding groove is provided inside the base. The guiding part is arranged in the guiding groove. When pressing the button, the guiding part can move downward along the guiding groove.

[0006] Further, a return spring is provided in the guiding groove. The upper end of the return spring abuts against the lower surface of the guiding part. The guiding parts are arranged on both sides of the button. When pressing the button, the return spring is squeezed and tightened. When pressing the button again, the return spring pushes the button to move upward.

[0007] Further, a hook part is also provided in the guiding groove. The hook part is arranged at the upper end of the guiding groove. When the button moves upward, the upper surface of the guiding part abuts against the lower surface of the hook part.

[0008] Further, a hook spring is also provided above the contact holder. The lower end of the button abuts against the hook spring. A connection hole is formed in the contact holder. One end of the hook spring is hooked to the connection hole. A through hole is also formed in the spring board. The other end of the hook spring is hooked to the through hole.

[0009] Further, a rotating seat is also provided on the contact holder. One end of the spring board is provided with a rotating part. The spring board is rotatably connected to the rotating seat on the contact holder through the rotating part. When the button moves downward, the hook spring is squeezed and deformed and pulls the spring board. At this time, the spring board falls around the rotating seat through the rotating part, and the moving contact contacts the static contact to conduct electricity.

[0010] Further, a forced disconnection component is also provided in the base. The forced disconnection component includes a disconnection board and a disconnection piece. A clamping groove is formed in the disconnection board. A driving part is formed by extending on the button. The driving part is arranged in the clamping groove and can move up and down along the clamping groove. A butting board is also formed by horizontally extending at the lower end of the clamping groove. When the driving part moves downward, it abuts against the butting board. The disconnection piece is arranged at the lower end of the disconnection board. The disconnection piece is located between the moving contact piece and the static contact piece.

[0011] Further, an installation groove for the up-and-down movement of the forced disconnection component is formed in the base. The forced disconnection component is installed in the installation groove.

[0012] Further, an upper cover plate and a lower cover plate are respectively provided on the upper surface and the lower surface of the base. A heat sink is also provided on the upper cover plate. A plurality of heat dissipation holes are formed in the heat sink. A dust-proof sleeve is also provided on the upper surface of the heat sink. The dust-proof sleeve is sleeved outside the button. A capacitor, a thyristor and a 5p terminal are also installed on the circuit board.

[0013] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0014] The utility model relates to a push-button switch, which comprises a base. A circuit board is arranged inside the base. Input terminals and output terminals are respectively arranged at two ends of the circuit board. A switch assembly is arranged between the input terminal and the output terminal. The switch assembly includes a contact holder connected to the input terminal and a static contact piece connected to the output terminal. Static contact points are arranged on the static contact piece. A movable spring plate is further arranged on the contact holder. A movable contact point is arranged on the spring plate. The movable contact point is located above the static contact point. A button is further arranged inside the base. The lower end of the button abuts against the upper side of the spring plate. The upper end of the button extends outside the base. When the button moves downward, it can control the spring plate to fall and make the movable contact point on the spring plate contact with the static contact point on the static contact piece to realize power-on. At least one guiding part is formed on the button. A vertically arranged guiding groove is arranged inside the base. The guiding part is arranged in the guiding groove. When the button is pressed, the guiding part can move downward along the guiding groove. This product can control the spring plate to rotate and fall around the contact holder through the button, so that the movable contact point on the contact holder contacts with the static contact point on the static contact piece. At this time, the input terminal and the output terminal are powered on. In the past, during the pressing process of the button, after multiple presses or heavy blows with different forces, the position would deviate, resulting in the lower end of the button not being able to better contact the spring plate on the contact holder. At this time, the switch would malfunction and be unstable. This product adds a guiding part on the button. The guiding part is arranged in the guiding groove. When the button moves downward, it can move downward along the guiding groove through the guiding part, with stronger stability, so that the lower end of the button always moves downward stably in one direction, enabling the spring plate to fall, and being more accurate and stable than before. Description of the Drawings

[0015] Figure 1 is a perspective view of the utility model.

[0016] Figure 2 is one of the sectional views of the utility model (switch off state).

[0017] Figure 3 is a perspective view of the utility model (switch off state) with some structures removed.

[0018] Figure 4 is an exploded view of the utility model (switch off state) with some structures removed.

[0019] Figure 5 is a schematic diagram of the switch off state of the utility model.

[0020] Figure 6 is a schematic diagram of the switch on state of the utility model.

[0021] Figure 7 is a sectional view of the utility model (switch on state).

[0022] Figure 8 is a perspective view of the utility model (switch on state) with some structures removed.

[0023] Figure 9 It is a perspective view of the button of the present utility model.

[0024] Figure 10 It is a perspective view of the base of the present utility model.

[0025] Figure 11 It is a perspective view of the button of the present utility model disposed inside the base.

[0026] Figure 12 It is a perspective view of the forced disconnection component of the present utility model.

[0027] Figure 13 It is the second cross-sectional view of the present utility model (in the switch-off state).

[0028] The meanings represented by the reference numerals in the figure:

[0029] 1 - Base; 2 - Circuit board; 3 - Input terminal; 4 - Output terminal; 6 - Contact holder;

[0030] 7 - Static contact piece; 8 - Static contact point; 9 - Spring plate; 10 - Moving contact point; 11 - Button; 12 - Guide portion; 13 - Guide groove; 14 - Return spring; 15 - Hook portion; 16 - Hook spring; 17 - Connection hole; 18 - Through hole; 19 - Forced disconnection component; 20 - Disconnection plate; 21 - Disconnection piece; 22 - Card slot; 23 - Driving member; 24 - Abutting plate; 25 - Installation groove; 26 - Upper cover plate; 27 - Lower cover plate; 28 - Heat sink; 29 - Heat dissipation hole; 30 - Dustproof sleeve;

[0031] 31 - Capacitor; 32 - Thyristor; 33 - 5p terminal. Specific embodiments

[0032] The present utility model will be further described below in conjunction with specific embodiments:

[0033] A push-button switch includes a base 1. A circuit board 2 is provided inside the base 1. An input terminal 3 and an output terminal 4 are respectively provided at two ends of the circuit board 2. A switch assembly is provided between the input terminal 3 and the output terminal 4. The switch assembly includes a contact holder 6 connected to the input terminal 3 and a stationary contact piece 7 connected to the output terminal 4. A stationary contact point 8 is provided on the stationary contact piece 7. A movable spring plate 9 is further provided on the contact holder 6. A movable contact point 10 is provided on the spring plate 9. The movable contact point 10 is located above the stationary contact point 8. A button 11 is further provided inside the base 1. The lower end of the button 11 abuts above the spring plate 9. The upper end of the button 11 extends outside the base 1. When the button 11 moves downward, it can control the spring plate 9 to fall and make the movable contact point 10 on the spring plate 9 contact the stationary contact point 8 on the stationary contact piece 7 to achieve power-on. At least one guiding portion 12 is formed on the button 11. A vertically arranged guiding groove 13 is provided inside the base 1. The guiding portion 12 is arranged in the guiding groove 13. When the button 11 is pressed, the guiding portion 12 can move downward along the guiding groove 13.

[0034] The utility model relates to a push-button switch, which includes a base 1. A circuit board 2 is provided inside the base 1. An input terminal 3 and an output terminal 4 are respectively provided at two ends of the circuit board 2. A switch assembly is provided between the input terminal 3 and the output terminal 4. The switch assembly includes a contact holder 6 connected to the input terminal 3 and a stationary contact piece 7 connected to the output terminal 4. A stationary contact point 8 is provided on the stationary contact piece 7. A movable spring plate 9 is further provided on the contact holder 6. A movable contact point 10 is provided on the spring plate 9. The movable contact point 10 is located above the stationary contact point 8. A button 11 is further provided inside the base 1. The lower end of the button 11 abuts above the spring plate 9. The upper end of the button 11 extends outside the base 1. When the button 11 moves downward, it can control the spring plate 9 to rotate and fall around the contact holder 6, so that the movable contact point 10 on the contact holder 6 contacts the stationary contact point 8 on the stationary contact piece 7. At this time, the input terminal 3 and the output terminal 4 are powered on. In the past, during the pressing process of the button 11, after multiple presses or heavy impacts with different forces, the position would deviate, resulting in the lower end of the button 11 not being able to better contact the spring plate 9 on the contact holder 6. At this time, the switch would malfunction and be unstable. In this product, a guiding portion 12 is added to the button 11. The guiding portion 12 is arranged in the guiding groove 13. When the button 11 moves downward, it can move downward along the guiding groove 13 through the guiding portion 12, with stronger stability, so that the lower end of the button 11 always moves downward stably in one direction, enabling the spring plate 9 to fall, which is more accurate and stable than before.

[0035] Preferably, a return spring 14 is provided in the guiding groove 13. The upper end of the return spring 14 abuts against the lower surface of the guiding portion 12. The guiding portions 12 are provided on both sides of the button 11. When the button 11 is pressed, the return spring 14 is squeezed and tightened. When the button 11 is pressed again, the return spring 14 pushes the button 11 to move upward. The number of guiding portions 12 is adapted to the guiding groove 13, and the return spring 14 is used to drive the button 11 to reset.

[0036] Preferably, a hook portion 15 is further provided in the guiding groove 13. The hook portion 15 is provided at the upper end of the guiding groove 13. When the button 11 moves upward, the upper surface of the guiding portion 12 abuts against the lower surface of the hook portion 15, preventing the button 11 from flying out of the base 1 after being pushed upward by the return spring 14 and playing a role in limiting the maximum moving distance.

[0037] Preferably, a hook spring 16 is further provided above the contact holder 6. The lower end of the button 11 abuts against the hook spring 16. A connection hole 17 is formed in the contact holder 6. One end of the hook spring 16 is hooked to the connection hole 17. A through hole 18 is further formed in the spring board 9. The other end of the hook spring 16 is hooked to the through hole 18. When the lower end of the button 11 moves downward, it can drive the hook spring 16 to deform. When the hook spring 16 deforms, it can drive the spring board 9 to rotate and fall relative to the contact holder 6. The two ends of the hook spring 16 are respectively hooked to the connection hole 17 on the contact holder 6 and the through hole 18 on the spring board 9. When a force acts on the middle part, the connection hole 17 is fixed and cannot be pulled, so one end of the spring board 9 will be driven to move and drive the spring board 9 to fall.

[0038] Preferably, a rotating seat is further provided on the contact holder 6. One end of the spring board 9 is provided with a rotating portion. The spring board 9 is rotatably connected to the rotating seat on the contact holder 6 through the rotating portion. When the button 11 moves downward, the hook spring 16 is squeezed and deformed to pull the spring board 9. At this time, the spring board 9 falls around the rotating seat through the rotating portion, and the moving contact 10 contacts the static contact 8 to conduct electricity. The rotational connection enables the spring board 9 to fall more smoothly relative to the contact holder 6, and the moving contact 10 and the static contact 8 can better contact each other.

[0039] Preferably, a forced disconnection component 19 is further provided in the base 1. The forced disconnection component 19 includes a disconnection plate 20 and a disconnection piece 21. A card slot 22 is formed on the disconnection plate 20. A driving member 23 is formed by extending on the button. The driving member 23 is arranged in the card slot 22 and can move up and down along the card slot 22. A butt plate 24 is further formed by horizontally extending at the lower end of the card slot 22. When the driving member 23 moves downward, it abuts against the butt plate 24. The disconnection piece 21 is arranged at the lower end of the disconnection plate 20. The disconnection piece 21 is located between the moving contact piece and the static contact piece 7. The forced disconnection component 19 can separate the moving contact point 10 and the static contact point 8 faster. At the moment when the moving contact point 10 contacts the static contact point 8, due to the too strong electric field, an electric arc may be generated between the moving contact point 10 and the static contact point 8, thus generating more heat, and the moving contact point 10 and the static contact point 8 may be partially melted and adhered together. In the present utility model, the driving member 23 moves in the card slot 22 on the disconnection plate 20. After the disconnection plate 20 moves upward, the disconnection piece 21 will force the moving contact point 10 to move upward, so that the moving contact point 10 and the static contact point 8 are forcibly separated.

[0040] Preferably, an installation slot 25 for the up and down movement of the forced disconnection component 19 is formed on the base 1. The forced disconnection component 19 is installed in the installation slot 25, which is convenient for the button 11 to drive the forced disconnection component 19 to move up and down.

[0041] Preferably, an upper cover plate 26 and a lower cover plate 27 are respectively provided on the upper surface and the lower surface of the base 1. A heat sink 28 is further provided on the upper cover plate 26. A plurality of heat dissipation holes 29 are formed on the heat sink 28. A dust-proof sleeve 30 is provided on the upper surface of the heat sink 28. The dust-proof sleeve 30 is sleeved outside the button 11. A capacitor 31, a thyristor 32 and a 5p terminal 33 are further installed on the circuit board 2. The 5p terminal 33 is a common wiring terminal on the market. The heat dissipation holes 29 can play a heat dissipation effect, avoiding the danger caused by the inability to dissipate the heat generated after the moving contact point 10 contacts the static contact point 8.

[0042] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A push switch, comprising a base (1), characterized in that: The base (1) is provided with a circuit board (2), and the two ends of the circuit board (2) are respectively provided with an input terminal (3) and an output terminal (4), and a switch assembly is provided between the input terminal (3) and the output terminal (4), and the switch assembly comprises a contact frame (6) connected to the input terminal (3) and a static contact piece (7) connected to the output terminal (4), and a static contact point (8) is provided on the static contact piece (7), and a movable springboard (9) is also provided on the contact frame (6), and a moving contact point (10) is provided on the springboard (9), and the moving contact point (10) is located above the static contact point (8), and a push button is also provided in the base (1). A button (11) is provided, the lower end of the button (11) is against the top of the springboard (9), the upper end of the button (11) extends outside the base (1), the button (11) moves downward to control the springboard (9) to fall and make the moving contact (10) on the springboard (9) contact with the static contact (8) on the static contact piece (7) to realize power supply, at least one guide part (12) is formed on the button (11), a vertically arranged guide groove (13) is provided in the base (1), the guide part (12) is arranged in the guide groove (13), and the button (11) is pressed so that the guide part (12) can move downward along the guide groove (13).

2. A push switch according to claim 1, characterized in that: A return spring (14) is arranged in the guide groove (13), and the upper end of the return spring (14) abuts against the lower surface of the guide portion (12). The guide portion (12) is arranged on both sides of the button (11). When the button (11) is pressed, the return spring (14) is squeezed and tightened. When the button (11) is pressed again, the return spring (14) pushes the button (11) to move upward.

3. A push switch according to claim 2, characterized in that: A hook portion (15) is also provided in the guide groove (13). The hook portion (15) is provided at the upper end of the guide groove (13). When the button (11) moves upward, the upper surface of the guide portion (12) abuts against the lower surface of the hook portion (15).

4. The push switch according to claim 1, characterized in that: A hook spring (16) is also provided above the contact frame (6), the lower end of the button (11) abuts against the hook spring (16), a connecting hole (17) is provided on the contact frame (6), one end of the hook spring (16) is hooked with the connecting hole (17), and a through hole (18) is also provided on the springboard (9), the other end of the hook spring (16) is hooked with the through hole (18).

5. A push switch according to claim 4, characterized in that: The contact frame (6) is also provided with a rotating seat, and one end of the springboard (9) is provided with a rotating part. The springboard (9) is rotatably connected to the rotating seat on the contact frame (6) through the rotating part. When the button (11) moves downward, the hook spring (16) is squeezed and deformed and pulls the springboard (9). At this time, the springboard (9) falls around the rotating seat through the rotating part, and the moving contact (10) contacts the static contact (8) to be energized.

6. The push switch according to claim 1, characterized in that: A forced disconnection assembly (19) is also provided in the base (1), and the forced disconnection assembly (19) comprises a disconnection plate (20) and a disconnection piece (21). A slot (22) is provided on the disconnection plate (20), and a driving member (23) is extended and formed on the button (11). The driving member (23) is arranged in the slot (22) and can move up and down along the slot (22). An abutment plate (24) is also extended and formed at the lower end of the slot (22). When the driving member (23) moves downward, it abuts against the abutment plate (24). The disconnection piece (21) is provided at the lower end of the disconnection plate (20), and the disconnection piece (21) is located between the moving contact piece and the stationary contact piece (7).

7. The push switch according to claim 6, characterized in that: The base (1) is provided with a mounting groove (25) for the forced disconnection component (19) to move up and down, and the forced disconnection component (19) is installed in the mounting groove (25).

8. The push switch according to claim 7, characterized in that: The upper surface and lower surface of the base (1) are respectively provided with an upper cover plate (26) and a lower cover plate (27); the upper cover plate (26) is also provided with a heat sink (28); the heat sink (28) is provided with a plurality of heat dissipation holes (29); the upper surface of the heat sink (28) is also provided with a dust cover (30); the dust cover (30) is sleeved outside the button (11); and a capacitor (31), a thyristor (32) and a 5p terminal (33) are also installed on the circuit board (2).

Images