A button switch for connecting small electrical appliances

Abstract

The present invention discloses a push-button switch for lapping small electrical appliances, which comprises a housing, a circuit board, a fuse resistor, a pressing component and a base, and further comprises a wiring board. The wiring board includes an upper waste discharge row, a lower waste discharge row, a left waste discharge row and a right waste discharge row that are enclosed to form a frame shape. At one end of the upper waste discharge row facing the housing, a first wiring terminal and a second wiring terminal that are turned on / off by the pressing component are arranged at intervals. At one end of the lower waste discharge row facing the housing, a third wiring terminal and a fourth wiring terminal that are electrically connected through the fuse resistor are arranged at intervals. The first wiring terminal and the third wiring terminal are placed at the left end of the wiring board, and the second wiring terminal and the fourth wiring terminal are placed at the right end of the wiring board. The first wiring terminal is further provided with a first extension part extending into a first installation groove, and the third wiring terminal is further provided with a second extension part extending into the first installation groove. The first extension part and the second extension part are electrically connected through the circuit board.

Description

Technical Field

[0001] The present invention relates to the technical field of push-button switches, and particularly relates to a push-button switch for lapping small electrical appliances. Background Art

[0002] A push-button switch refers to a switch that uses a button to push a transmission mechanism to connect or disconnect a moving contact and a static contact and achieve circuit switching. The push-button switch is a kind of master switch with a simple structure and wide application.

[0003] Currently, existing push-button switches are all formed by molding the housing and then introducing connection pins to install with small electrical appliances. The installation process is cumbersome, the production efficiency is low, and fast installation cannot be achieved. At the same time, when introducing the connection pins, the positioning effect is poor, the wiring effect is not ideal, and there are certain safety hazards. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a push-button switch for lapping small electrical appliances to solve the above problems.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A push-button switch for lapping small electrical appliances, comprising a housing, a circuit board, a fuse resistor, a pressing assembly, and a base. A connecting piece for assembly is provided between the housing and the base. A first installation groove for placing the circuit board is provided in the left part of the upper end surface of the housing, and a second installation groove for placing the fuse resistor is provided in the lower part of the upper end surface of the housing. It further includes a wiring board, which is integrally formed with the housing. The wiring board includes an upper waste discharge row, a lower waste discharge row, a left waste discharge row, and a right waste discharge row that enclose a frame shape. At the end of the upper waste discharge row facing the housing, a first connection pin and a second connection pin that are connected or disconnected by the pressing assembly are arranged at intervals. At the end of the lower waste discharge row facing the housing, a third connection pin and a fourth connection pin that are electrically connected through the fuse resistor are arranged at intervals. The first connection pin and the third connection pin are placed at the left end of the wiring board, and the second connection pin and the fourth connection pin are placed at the right end of the wiring board. The first connection pin is further provided with a first extension part extending into the first installation groove, and the third connection pin is further provided with a second extension part extending into the first installation groove. The first extension part and the second extension part are electrically connected through the circuit board.

[0006] The advantages of adopting the above technical solution are as follows: The first terminal and the third terminal of the present invention can be lapped with small electrical appliances, and the third terminal and the fourth terminal are electrically connected through a fuse resistor. When an excessive current appears in the circuit, the fuse resistor will be melted first. Therefore, the push-button switch also has the function of effectively preventing the internal circuit and the small electrical appliances carried thereon from being burned out, with a wider scope of application. Moreover, the first terminal, the second terminal, the third terminal, and the fourth terminal are surrounded by corresponding upper waste discharge rows, lower waste discharge rows, left waste discharge rows, and right waste discharge rows to form a frame structure, which facilitates the molding of the housing with the first terminal, the second terminal, the third terminal, and the fourth terminal, reduces the assembly time of the housing with the first terminal, the second terminal, the third terminal, and the fourth terminal during the assembly process of the push-button switch, improves the production efficiency, and at the same time strengthens the connection strength between the housing and the first terminal, the second terminal, the third terminal, and the fourth terminal, with higher electrical connection stability.

[0007] Preferably, connection strengthening blocks bent upward are provided on the second terminal, the first extension part, and the second extension part.

[0008] The advantages of adopting the above technical solution are as follows: The setting of this structure can improve the bonding degree between the first terminal, the second terminal, the third terminal and the housing, so that when the wiring board is integrally formed with the housing, the connection strength is high.

[0009] Preferably, the lower end surfaces of the first terminal, the second terminal, the third terminal, and the fourth terminal are flush with the lower end surface of the housing, and raised blocks are further provided on the first terminal and the second terminal, and the raised blocks extend outside the lower end surface of the housing.

[0010] The advantages of adopting the above technical solution are as follows: The opening and closing of the overall circuit are realized through the cooperation of the raised block and the pressing component, with a simple structure, which simplifies the installation process to a certain extent, improves the production efficiency, and makes the user use more safely.

[0011] Preferably, the upper waste discharge row and the lower waste discharge row are also provided with a plurality of positioning holes, and the centers of the positioning holes are on the same axis.

[0012] The advantages of adopting the above technical solution are as follows: It improves the stability of the overall structure and at the same time improves the strength when the housing is installed on the base.

[0013] Preferably, a through hole for facilitating the disassembly of the circuit board is provided on the base corresponding to the first installation groove.

[0014] The advantages of adopting the above technical solution are as follows: The disassembly of the circuit board is realized through the through hole, which improves the stability of the overall structure and facilitates the maintenance of the circuit board.

[0015] Preferably, the connecting member includes a plug post and a slot, and the housing and the base form an assembled structure through the plug post and the slot.

[0016] The advantages of adopting the above technical solution are as follows: it makes the installation of the housing and the base more firm, improves the stability of the overall structure, and increases the strength of the housing after installation.

[0017] Preferably, an indicator light for indicating the working state and a protection circuit are provided on the circuit board.

[0018] The advantages of adopting the above technical solution are as follows: it avoids the problem of burning out the internal circuit of the housing and external electrical appliances due to excessive current, improves the safety during use, and reduces the occurrence of potential safety hazards.

[0019] Preferably, the first connection pin and the first extension part are integrally formed, and the third connection pin and the second extension part are integrally formed.

[0020] The advantages of adopting the above technical solution are as follows: it improves the strength during the installation of the first connection pin and the first extension part, is not prone to falling off, improves the strength during the installation of the third connection pin and the second extension part, and at the same time improves the installation stability between the first extension part, the second extension part and the circuit board, and reduces the occurrence of potential safety hazards. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the wiring board structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the housing structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the base structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the protection circuit principle of the present invention.

[0026] Reference numerals: 1. Housing; 11. Circuit board; 111. Indicator light; 112. Protection circuit; 12. Fuse resistor; 13. Base; 131. Through hole; 14. First installation groove; 15. Second installation groove; 16. Pressing component; 2. Connecting piece; 21. Insertion post; 22. Insertion slot; 3. Wiring board; 31. Upper waste discharge row; 311. First connection pin; 3111. First extension part; 312. Second connection pin; 3121. Protruding block; 32. Lower waste discharge row; 321. Third connection pin; 3211. Second extension part; 322. Fourth connection pin; 33. Left waste discharge row; 34. Right waste discharge row; 35. Connection strengthening block; 36. Positioning hole. Detailed Embodiments

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component, respectively.

[0028] Referring to Figures 1-5 As shown, a push-button switch for a small overlapping electrical appliance includes a housing 1, a circuit board 11, a fuse resistor 12, a pressing assembly 16, and a base 13. A connecting member 2 for assembly is provided between the housing 1 and the base 13. A first mounting groove 14 for placing the circuit board 11 is provided in the left part of the upper end surface of the housing 1, and a second mounting groove 15 for placing the fuse resistor 12 is provided in the lower part of the upper end surface of the housing 1. It further includes a wiring board 3. The housing 1 and the wiring board 3 are integrally formed. The wiring board 3 includes an upper waste discharge 31, a lower waste discharge 32, a left waste discharge 33, and a right waste discharge 34 that enclose a frame shape. At one end of the upper waste discharge 31 facing the housing 1, a first connection pin 311 and a second connection pin 312 that are connected / disconnected by the pressing assembly 16 are arranged at intervals. At one end of the lower waste discharge 32 facing the housing 1, a third connection pin 321 and a fourth connection pin 322 that are electrically connected by the fuse resistor 12 are arranged at intervals. The first connection pin 311 and the third connection pin 321 are placed at the left end of the wiring board 3, and the second connection pin 312 and the fourth connection pin 322 are placed at the right end of the wiring board 3. The first connection pin 311 is further provided with a first extension 3111 extending into the first mounting groove 14, and the third connection pin 321 is further provided with a second extension 3211 extending into the first mounting groove 14. The first extension 3111 and the second extension 3211 are electrically connected through the circuit board 11.

[0029] The present invention is implemented through a housing 1, a circuit board 11, a fuse resistor 12, a pressing component 16, a base 13, and a wiring board 3. When the housing 1 is formed at high temperature, the wiring board 3, the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322 are placed into the housing 1 and integrally formed with the housing 1. Then, the first wiring pin 311 and the third wiring pin 321 are connected to an external electrical appliance, and at the same time, the second wiring pin 312 and the fourth wiring pin 322 are connected to an external power supply to provide electrical energy for the whole. By connecting the second wiring pin 312 and the second wiring pin 312 to the fuse resistor 12, where the fuse resistor 12 is welded at the corresponding positions of the third wiring pin 321 and the fourth wiring pin 322 in the second installation groove 15, the welding position of the fuse resistor 12 is reasonable to avoid interference and provide protection for the whole circuit. Then, the base 13 protects the bottom of the housing 1 to improve the stability of the whole structure. After the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322 are injection-molded with the housing 1, the upper waste discharge 31, the lower waste discharge 32, the left waste discharge 33, and the right waste discharge 34 are removed from the wiring board 3 to complete the installation. The first wiring pin 311 and the third wiring pin 321 of the present invention can be overlapped with a small electrical appliance, and the third wiring pin 321 and the fourth wiring pin 322 are electrically connected through the fuse resistor 12. When an excessive current appears in the circuit, the fuse resistor 12 will be melted first. Therefore, the push-button switch also has the function of effectively preventing the internal circuit and the small electrical appliance carried from being burned out, with a wider application range. Moreover, the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322 form a frame structure through the corresponding upper waste discharge 31, lower waste discharge 32, left waste discharge 33, and right waste discharge 34, which is convenient for the formation of the housing 1 and the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322, reduces the assembly time of the housing 1 and the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322 during the assembly of the push-button switch, improves the production efficiency, and at the same time strengthens the connection strength between the housing 1 and the first wiring pin 311, the second wiring pin 312, the third wiring pin 321, and the fourth wiring pin 322, with higher electrical connection stability.

[0030] The pressing assembly 16 includes a button, a rotor, a copper cap, and a spring. The copper cap consists of a disc and a cylinder. The cylinder is integrally formed on the upper end surface of the disc, and a groove penetrating downward through the disc is provided inside the cylinder. A cavity for placing the disc and the spring is formed on the housing. The upper end of the spring is inserted into the groove and abuts against the top surface of the groove, and the lower end of the spring abuts against the bottom surface of the cavity. The rotor is sleeved on the cylinder of the copper cap, and the button is sleeved on the rotor. A convex ring abutting against the lower end of the button is provided on the rotor. Engaging connection teeth are provided on the upper end surface of the convex ring and the lower end surface of the button. A through hole for the button to pass through is correspondingly provided on the base. Switch-off limiting grooves and switch-on limiting grooves are provided on the inner wall of the through hole. The lower ends of the switch-off limiting grooves and the switch-on limiting grooves penetrate through the through hole, and the upper end surface of the switch-off limiting groove is lower than the upper end surface of the switch-on limiting groove. Radial ribs for sliding into the switch-off limiting groove or the switch-on limiting groove are correspondingly provided on the button and the convex ring of the rotor. The inner ends of the first terminal 311 and the second terminal 312 extend into the cavity and are located above the disc.

[0031] The second terminal 312, the first extension portion 3111, and the second extension portion 3211 are all provided with connecting strengthening blocks 35 bent upward. During use, the setting of this structure can improve the bonding degree between the first terminal 311, the second terminal 312, the third terminal 321 and the housing 1, so that when the wiring board 3 is integrally formed with the housing 1, the connection strength is high.

[0032] The lower end surfaces of the first terminal 311, the second terminal 312, the third terminal 321, and the fourth terminal 322 are flush with the lower end surface of the housing 1, and raised blocks 3121 are further provided on the first terminal 311 and the second terminal 312. The raised blocks 3121 extend outside the lower end surface of the housing 1. During use, the first terminal 311 and the second terminal 312 are electrically connected to the pressing assembly 16. When the pressing assembly 16 is pressed, the contacts of the pressing assembly 16 come into contact with the raised blocks 3121, so that the circuits of the first terminal 311 and the second terminal 312 are connected, and the overall circuit is made to flow. When the pressing assembly 16 is pressed again, the contacts of the pressing assembly 16 are disconnected from the raised blocks 3121, so that the overall circuit is disconnected. The opening and closing of the overall circuit are realized through the cooperation of the raised blocks 3121 and the pressing assembly 16. The structure is simple, which simplifies the installation process to a certain extent, improves the production efficiency, and makes it safer for users to use.

[0033] The upper waste discharge 31 and the lower waste discharge 32 are also provided with a plurality of positioning holes 36, and the centers of the positioning holes 36 are on the same axis. During installation, when the wiring board 3 is integrally formed with the housing 1, the wiring board 3 is positioned during installation through the positioning holes 36, and when the wiring board 3 is installed with the housing 1, the first wiring pin 311 and the second wiring pin 312 are placed between the two insertion posts 21 on the upper part of the bottom of the housing 1, and at the same time, the third wiring pin 321 and the fourth wiring pin 322 are placed between the two insertion posts 21 on the lower part of the bottom of the housing 1, improving the stability of the overall structure.

[0034] A through hole 131 for facilitating the disassembly of the circuit board 11 is provided on the base 13 corresponding to the first installation groove 14. During use, when the circuit board 11 is damaged and cannot operate, the circuit board 11 is ejected from the through hole 131 by any ejecting member and ejected to the outside of the first installation groove 14 to disassemble and replace the circuit board 11. The disassembly of the circuit board 11 is realized through the through hole 131, improving the stability of the overall structure and facilitating the maintenance of the circuit board 11.

[0035] The connecting member 2 includes an insertion post 21 and a slot 22, and the housing 1 and the base 13 form an assembled structure through the insertion post 21 and the slot 22. When the housing 1 and the base 13 are installed, the insertion post 21 is arranged at the bottom of the housing 1, the slot 22 is arranged at the top of the base 13, and by matching the insertion post 21 with the corresponding slot 22, the installation of the housing 1 and the base 13 is made more firm, improving the stability of the overall structure and increasing the strength of the housing 1 after installation.

[0036] An indicator light 111 for indicating the working state and a protection circuit 112 are provided on the circuit board 11. During use, when an external power supply provides electrical energy for the overall structure, the second wiring pin 312 and the second wiring pin 312 are connected to the fuse resistor 12. When the current in the circuit is too large, the fuse resistor 12 will be melted first, and the opening and closing condition of the circuit is displayed through the indicator light 111, avoiding the problem of burning the internal circuit of the housing 1 and the external electrical appliances due to excessive current, improving the safety during use and reducing the occurrence of potential safety hazards.

[0037] The first wiring pin 311 is integrally formed with the first extension portion 3111, and the third wiring pin 321 is integrally formed with the second extension portion 3211. During use, by integrally forming the first wiring pin 311 with the first extension portion 3111, the strength of the installation of the first wiring pin 311 and the first extension portion 3111 is improved, and it is not easy to fall off. The third wiring pin 321 is integrally formed with the second extension portion 3211, improving the strength of the installation of the third wiring pin 321 and the second extension portion 3211, and at the same time improving the stability of the installation between the first extension portion 3111, the second extension portion 3211 and the circuit board 11, reducing the occurrence of potential safety hazards.

[0038] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A push-button switch for a small electrical appliance with a lap joint, comprising a housing (1), a circuit board (11), a fuse resistor (12), a pressing assembly (16) and a base (13). A connecting piece (2) for assembly is arranged between the housing (1) and the base (13). A first mounting groove (14) for placing the circuit board (11) is arranged at the left part of the upper end surface of the housing (1), and a second mounting groove (15) for placing the fuse resistor (12) is arranged at the lower part of the upper end surface of the housing (1). It is characterized in that: It further includes a wiring board (3), the housing (1) and the wiring board (3) are integrally formed, the wiring board (3) includes an upper waste discharge row (31), a lower waste discharge row (32), a left waste discharge row (33), and a right waste discharge row (34) that enclose a frame shape. At one end of the upper waste discharge row (31) facing the housing (1), a first connection pin (311) and a second connection pin (312) that are connected / disconnected by the pressing assembly (16) are arranged at intervals. At one end of the lower waste discharge row (32) facing the housing (1), a third connection pin (321) and a fourth connection pin (322) that are electrically connected by the fuse resistor (12) are arranged at intervals. The first connection pin (311) and the third connection pin (321) are placed at the left end of the wiring board (3), and the second connection pin (312) and the fourth connection pin (322) are placed at the right end of the wiring board (3). The first connection pin (311) is further provided with a first extension portion (3111) extending into the first installation groove (14), and the third connection pin (321) is further provided with a second extension portion (3211) extending into the first installation groove (14). The first extension portion (3111) and the second extension portion (3211) are electrically connected through the circuit board (11).

2. The push-button switch for lapping small electrical appliances according to claim 1, characterized in that: The second connection pin (312), the first extension portion (3111), and the second extension portion (3211) are all provided with connection strengthening blocks (35) bent upward.

3. The push-button switch for lapping small electrical appliances according to claim 1, characterized in that: The lower end surfaces of the first connection pin (311), the second connection pin (312), the third connection pin (321), and the fourth connection pin (322) are flush with the lower end surface of the housing (1), and the first connection pin (311) and the second connection pin (312) are further provided with raised blocks (3121), and the raised blocks (3121) extend outside the lower end surface of the housing (1).

4. A push-button switch for connecting small electrical appliances according to claim 1, characterized in that: The upper waste discharge row (31) and the lower waste discharge row (32) are further provided with a plurality of positioning holes (36), and the centers of the positioning holes (36) are on the same axis.

5. The push-button switch for a small electrical appliance according to claim 1, characterized in that: A through hole (131) facilitating the disassembly of the circuit board (11) is provided at the position corresponding to the first installation groove (14) on the base (13).

6. The push-button switch for lapping small electrical appliances according to claim 1, characterized in that: The connecting member (2) includes a plug post (21) and a slot (22), and the housing (1) and the base (13) form an assembled structure through the plug post (21) and the slot (22).

7. The push-button switch for lapping small electrical appliances according to claim 1, characterized in that: An indicator light (111) for indicating the working state and a protection circuit (112) are provided on the circuit board (11).

8. The push-button switch for lapping small electrical appliances according to claim 1, wherein: The first connection pin (311) and the first extension portion (3111) are integrally formed, and the third connection pin (321) and the second extension portion (3211) are integrally formed.

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