Modularized quick connection type pure signal switch

Abstract

The invention relates to a modularized quick connection type pure signal switch which comprises a switch body, a circuit board is arranged in the switch body, one end of the circuit board penetrates through the side wall of the switch body and extends out of the switch body to form an external connection part, a row of quick jacks matched with connectors with pins are formed in the external connection part, each quick jack is a bonding pad through hole, and the bonding pad through holes are connected with the circuit board. The side wall of the switch body is provided with a through hole which is matched with the external connection part of the circuit board and allows the external connection part to penetrate out. According to the invention, the external connection part of the circuit board is provided with the quick jack matched with the connector with the pins, so that a user can directly insert the wires pre-assembled with the connector with the pins into the quick jack on the circuit board, and compared with the mode that the wires are clamped with connection grooves on the circuit board one by one and then are welded, the wires can be directly inserted into the quick jack on the circuit board; the connector is adopted for direct plugging, so that connection is more convenient, and the connector is more suitable for a small-size pure signal switch.

Description

Technical Field

[0001] This invention belongs to the field of signal switch technology, specifically relating to a modular quick-connect pure signal switch. Background Technology

[0002] Currently, common small-volume pure signal switches have varying wire lengths for transmitting signals due to different tools and applications from end customers. This results in dozens or even hundreds of different switch models, which were originally designed as a single switch body. To standardize the switch body and significantly improve production efficiency and quality, this standardized pure signal switch body was designed to be suitable for different customers and different types of tools.

[0003] To address the above issues, Chinese patent application CN118984525A discloses a circuit board that facilitates external soldering and a modular switch based on the circuit board. By extending one end of the circuit board outside the switch body and setting a connection groove on the edge of the circuit board, users can select the appropriate length of wire for on-site soldering according to actual needs when assembling the switch. However, after practical use, it was found that this structure has good technical effects for large-volume high-current switches, but for small pure signal switches, due to the thin diameter of the signal wire, the small connection groove of the corresponding circuit board, and the small size of the switch body, the actual on-site soldering connection is extremely difficult. Therefore, it is necessary to improve the existing quick connection method to adapt to the characteristics of small-volume pure signal switches. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a modular quick-connect pure signal switch, which solves the technical problem that the connection between the wires and the circuit board is difficult due to the small size and thin wire diameter of the pure signal switch.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a modular quick-connect pure signal switch, including a switch body, a circuit board is disposed inside the switch body, one end of the circuit board extends out of the switch body through the side wall of the switch body to form an external part, a row of quick-connect holes adapted to pin connectors are provided on the external part, each quick-connect hole is a solder pad through hole, and a through hole adapted to the external part of the circuit board is opened on the side wall of the switch body for the external part to pass through.

[0006] As a preferred embodiment, a connector with pins is inserted into the external part. The connector has several wires connected to its tail. The wires correspond one-to-one with the pins and are electrically connected. Each pin is inserted into some or all of the quick-connect holes on the external part. Each wire is electrically connected to the circuit on the circuit board through its quick-connect hole.

[0007] As a preferred embodiment, the outer wall of the switch body is also provided with a U-shaped dam surrounding the outer part. The opening end of the dam is the insertion port of the connector. The connector is inserted from the opening end of the dam along the inner walls on both sides of the dam until each pin is inserted into the corresponding quick-connect hole.

[0008] As a preferred embodiment, the pin has a radially elastically raised locking portion. When the pin is inserted into the quick-connect hole, the locking portion is squeezed and contracted through the quick-connect hole before returning to its raised state, preventing the pin from being pulled out.

[0009] As a preferred option, the pins are inserted into the corresponding quick-connect sockets and soldered to the corresponding quick-connect sockets, with the solder joints coated with sealant.

[0010] As a preferred embodiment, the connector closes the opening end of the cofferdam, and the connector and the cofferdam together form a potting groove. The external part of the circuit board and each pin of the connector are located in the potting groove, which is filled with sealant.

[0011] As a preferred option, the top of the glue-filling tank is equipped with a cover plate, which is connected to the cofferdam by a snap-fit ​​connection.

[0012] As a preferred embodiment, the switch body includes a housing, a speed-regulating slider slidably connected inside the housing, a push rod slidably inserted into the housing for driving the speed-regulating slider to slide, a reset spring connected between the speed-regulating slider and the inner wall of the housing for driving the slider to reset, and a speed-regulating spring connected to the speed-regulating slider and slidably abutting against the speed-regulating circuit on the circuit board. The push rod pushes the speed-regulating slider to slide, and the speed-regulating slider drives the speed-regulating spring to slide on the circuit board to adjust the speed.

[0013] As a preferred embodiment, the switch body further includes a reversing shaft located inside the housing, a reversing spring pressed between the reversing shaft and the circuit board, and a reversing dial rotatably connected to the housing of the switch body for driving the reversing shaft to rotate.

[0014] As a preferred embodiment, the speed regulating slider and the reversing shaft are respectively located on both sides of the circuit board.

[0015] The beneficial effects of this invention are: by providing quick-connect holes adapted to pin connectors on the external part of the circuit board, this invention allows users to directly plug wires with pre-installed pin connectors into the quick-connect holes on the circuit board. Compared with soldering the wires one by one into the connection slots on the circuit board, direct plugging of the connectors is more convenient and more suitable for small-volume pure signal switches. Attached Figure Description

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1This is a partially exploded structural diagram of the modular quick-connect pure signal switch described in this invention; Figure 2 This is a schematic diagram of the specific structure of the connector described in this invention; Figure 3 This is an exploded view of the modular quick-connect pure signal switch described in this invention; Figures 1-3 Components: 1. Switch body; 101. Housing; 102. Speed ​​control slider; 103. Push rod; 104. Return spring; 105. Speed ​​control spring; 106. Reversing shaft; 107. Reversing spring; 108. Reversing dial; 2. Circuit board; 2a. External part; 3. Quick-connect socket; 4. Through hole; 5. Connector; 6. Wire; 7. Pin; 8. Dike; 9. Locking part; 10. Glue potting groove; 11. Cover plate. Detailed Implementation

[0017] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 The modular quick-connect pure signal switch shown includes a switch body 1. A circuit board is disposed inside the switch body 1. One end of the circuit board extends out of the switch body 1 through the side wall to form an external part 2a. The external part 2a is provided with a row of quick-connect holes 3 adapted to pin connectors. Each quick-connect hole 3 is a through hole with a solder pad. The side wall of the switch body 1 is provided with a through hole 4 adapted to the external part 2a of the circuit board and allowing the external part 2a to pass through.

[0019] A connector 5 with pins 7 is inserted into the external part 2a. Several wires 6 are connected to the tail of the connector 5. The wires 6 correspond one-to-one with the pins 7 and are electrically connected. Each pin 7 is inserted into some or all of the quick-connect holes 3 on the external part 2a. Each wire 6 is electrically connected to the circuit on the circuit board through each quick-connect hole 3.

[0020] A quick-connect socket 3, compatible with the connector 5 with pins 7, is provided on the external part 2a of the circuit board, allowing users to directly plug the wires 6 pre-installed with the connector 5 into the quick-connect socket 3 on the external part 2a of the circuit board for rapid connection. Compared to soldering the wires 6 one by one to the connection slots on the circuit board, the direct plug-in connection method using the connector 5 is more convenient and more suitable for small-sized pure signal switches. It effectively solves the technical problem of the difficulty in field connection of wires to the circuit board due to the small size and thin wire diameter of pure signal switches, laying the foundation for the mass production of small pure signal switches with standardized specifications.

[0021] like Figure 1As shown, a U-shaped retaining wall 8 is also provided on the outer wall of the switch body 1, surrounding the outer part 2a. The open end of the retaining wall 8 is the insertion port of the connector 5. The connector 5 is inserted from the open end of the retaining wall 8 along the inner walls on both sides of the retaining wall 8 until each pin 7 is inserted into the corresponding quick-connect socket 3. The retaining wall 8 is used to protect the outer part 2a from damage caused by impact. At the same time, the retaining wall 8 can also guide the assembly of the connector 5 to ensure that the user can accurately insert the pins 7 into the corresponding quick-connect sockets 3, so as to achieve accurate connection between the wire 6 and the circuit board.

[0022] like Figure 2 As shown, the pin 7 has a radially elastically raised locking portion 9. When the pin 7 is inserted into the quick-connect socket 3, the locking portion 9 is compressed and retracted through the quick-connect socket 3 before returning to its raised state, preventing the pin 7 from being pulled out. The locking portion 9 can be composed of multiple spring clips with their ends respectively connected to the pin 7. The pin 7 with the locking portion 9 has a self-locking function, making it less likely to fall out after being inserted into the quick-connect socket 3, thus improving the reliability of the connection between the wire 6 and the circuit board after the quick-connect connection.

[0023] To further improve connection stability and conductivity reliability, this embodiment also preferably inserts pin 7 into the corresponding quick-connect hole 3 and welds it to the corresponding quick-connect hole 3. The weld is coated with sealant to seal the exposed metal, so as to avoid moisture, dust and other impurities affecting the insulation performance between the sealed pins 7.

[0024] The connector 5 closes the opening end of the cofferdam 8. The connector 5 and the cofferdam 8 together form a potting groove 10. The outer part 2a of the circuit board and each pin 7 of the connector 5 are located in the potting groove 10. The potting groove 10 is filled with sealant.

[0025] A cover plate 11 is provided on the top of the glue-filling tank 10, and the cover plate 11 is connected to the cofferdam 8 by a snap-fit. The cover plate 11 seals the glue-filling tank 10 to prevent dust from entering the glue-filling tank 10. like Figure 3 As shown, the switch body 1 includes a housing 101, a speed regulating slider 102 slidably connected inside the housing 101, a push rod 103 slidably inserted into the housing 101 and used to drive the speed regulating slider 102 to slide, a reset spring 104 connected between the speed regulating slider 102 and the inner wall of the housing 101 for driving the speed regulating slider 102 to reset, and a speed regulating spring 105 connected to the speed regulating slider 102 and slidably abutting against the speed regulating circuit on the circuit board 2. The push rod 103 pushes the speed regulating slider 102 to slide, and the speed regulating slider 102 drives the speed regulating spring 105 to slide on the circuit board 2 to adjust the speed.

[0026] The switch body 1 also includes a reversing shaft 106 located inside the housing 101, and a reversing spring 107 pressed between the reversing shaft 106 and the circuit board 2. A reversing dial 108 for driving the reversing shaft 106 to rotate is rotatably connected to the housing 101 of the switch body 1. The reversing shaft 106 and the reversing spring 107 are used to switch the rotation direction of the device motor.

[0027] The speed regulating slider 102 and the reversing shaft 106 are respectively located on both sides of the circuit board 2 to avoid mutual interference.

[0028] The working principle of this invention is as follows: by setting quick-connect holes 3 on the outer part of the circuit board 2 that are compatible with pin connectors, users can directly plug the wires 6 with pre-installed pin connectors 5 into the quick-connect holes 3 on the circuit board 2. Compared with soldering the wires 6 one by one into the connecting slots on the circuit board 2, it is more convenient to connect by directly plugging in the connectors 5, and it is more suitable for small-volume pure signal switches.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A modular quick-connect pure signal switch, comprising a switch body (1), characterized in that, The switch body (1) has a circuit board inside. One end of the circuit board extends out of the switch body (1) through the side wall to form an external part (2a). The external part (2a) has a row of quick-connect holes (3) adapted to the pin connector. Each quick-connect hole (3) is a through hole with a solder pad. The side wall of the switch body (1) has a through hole (4) adapted to the external part (2a) of the circuit board and through which the external part 2 passes.

2. The modular quick-connect pure signal switch according to claim 1, characterized in that, A connector (5) with pins (7) is inserted into the external part (2a). Several wires (6) are connected to the tail of the connector (5). The wires (6) correspond one-to-one with the pins (7) and are electrically connected. Each pin (7) is inserted into some or all of the quick-connect holes (3) on the external part (2a). Each wire (6) is electrically connected to the circuit on the circuit board through each quick-connect hole (3).

3. The modular quick-connect pure signal switch according to claim 2, characterized in that, The outer wall of the switch body (1) is also provided with a U-shaped dam (8) surrounding the outer part (2a). The opening end of the dam (8) is the insertion port of the connector (5). The connector (5) is inserted from the opening end of the dam (8) along the inner walls on both sides of the dam (8) until each pin (7) is inserted into the corresponding quick-connect hole (3).

4. The modular quick-connect pure signal switch according to claim 2, characterized in that, The pin (7) has a radially elastically raised locking part (9). When the pin (7) is inserted into the quick-connect hole (3), the locking part (9) is squeezed and contracted through the quick-connect hole (3) and then returns to the raised state to prevent the pin (7) from being pulled out.

5. The modular quick-connect pure signal switch according to claim 2, characterized in that, The pin (7) is inserted into the corresponding quick-connect socket (3) and soldered to the corresponding quick-connect socket (3), and the solder joint is coated with sealant.

6. The modular quick-connect pure signal switch according to claim 3, characterized in that, The connector (5) closes the opening end of the cofferdam (8). The connector (5) and the cofferdam (8) together form a potting groove (10). The outer part (2a) of the circuit board and each pin (7) of the connector (5) are located in the potting groove (10). The potting groove (10) is filled with sealant.

7. The modular quick-connect pure signal switch according to claim 6, wherein a cover plate (11) is provided on the top of the potting tank (10), and the cover plate (11) is connected to the cofferdam (8) by a snap fastener.

8. The modular quick-connect pure signal switch according to any one of claims 1 to 7, characterized in that, The switch body (1) includes a housing (101), a speed regulating slider (102) slidably connected inside the housing (101), a push rod (103) slidably inserted into the housing (101) and used to drive the speed regulating slider (102) to slide, a reset spring (104) connected between the speed regulating slider (102) and the inner wall of the housing (101) for driving the speed regulating slider (102) to reset, and a speed regulating spring (105) connected to the speed regulating slider (102) and slidably abutting against the speed regulating circuit on the circuit board (2). The push rod (103) pushes the speed regulating slider (102) to slide, and the speed regulating slider (102) drives the speed regulating spring (105) to slide on the circuit board (2) to regulate speed.

9. The modular quick-connect pure signal switch according to claim 8, characterized in that, The switch body (1) also includes a reversing shaft (106) located inside the housing (101), a reversing spring (107) pressed between the reversing shaft (106) and the circuit board (2), and a reversing dial (108) for driving the reversing shaft (106) to rotate is rotatably connected to the housing (101) of the switch body (1).

10. The modular quick-connect pure signal switch according to claim 9, characterized in that, The speed regulating slider (102) and the reversing shaft (106) are respectively located on both sides of the circuit board (2).

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