Electric tool switch

Abstract

The utility model relates to the technical field of electric tools, in particular to an electric tool switch, which comprises a shell composed of an upper half shell and a lower half shell; the silicon controlled voltage regulating circuit board is arranged in the shell; the first circuit is arranged in the shell, a first output end is fixedly arranged on the first circuit, and the first output end penetrates through the shell; the second circuit is of a split type, has two ends and is divided into a first section and a second section which are both arranged in the shell, and a second output end is fixedly arranged on the second section and penetrates through the shell; the third circuit is arranged in the shell, two connecting ends distributed up and down are arranged on the third circuit, the connecting end located at the upper end is connected with the first section of the second circuit, and the connecting end located at the lower end is connected with the first circuit; the two steel sheets are arranged in the shell, one steel sheet is connected with the first section of the second circuit, and the other steel sheet is connected with the second section of the second circuit; and the pressing rod is arranged in the shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tools, in particular to an electric tool switch. BACKGROUND

[0002] The speed regulating switch function of the alternating current speed regulating electric drill, speed regulating electric hammer and other electric tools is realized by changing the output voltage, i.e. the motor working voltage, to change the motor speed through adjusting the conduction angle of the high-power bidirectional thyristor. The size of the conduction angle of the thyristor is determined by the size of the capacitor and resistor in the RC trigger circuit that triggers the conduction of the thyristor. The capacitor capacity is fixed and unchanged, the speed regulating switch trigger moves back and forth to drive the switch brush to move, so that the brush contact slides on the resistor rail to change the size of the resistor and the conduction angle of the thyristor. The size of the resistor and the length and position of the resistor rail cooperate with the displacement of the brush contact, so that the conduction angle of the thyristor can produce the required change of the switch, meeting the voltage requirements of the motor during starting and speed regulation.

[0003] At present, the existing technology, the connection of the switch with the live wire and the zero line needs to be fastened with a locking screw, such as the alternating current stepless speed regulating switch for electric tools disclosed in the publication No. CN221427576U, which needs to be manually tightened or loosened, increasing the time cost of installation and maintenance. After long-term use, the screw may rust, loosen and other problems, affecting the stability and safety of the connection.

[0004] To this end, the present application proposes an electric tool switch to solve the problem. SUMMARY

[0005] The purpose of the present application is to solve at least one of the technical defects mentioned above.

[0006] To this end, one purpose of the present application is to propose an electric tool switch to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0007] To achieve the above object, the embodiment of one aspect of the present application provides an electric tool switch, comprising: a shell composed of an upper half shell and a lower half shell; a thyristor voltage regulating circuit board arranged in the shell; a first circuit arranged in the shell, a first output end being fixedly arranged on the first circuit and penetrating through the shell; a second circuit being split into two ends and composed of a first section and a second section, both arranged in the shell, a second output end being fixedly arranged on the second section and penetrating through the shell; a third circuit arranged in the shell, two connection ends being arranged on the third circuit in an up-down distribution, the connection end at the upper end being connected with the first section of the second circuit, and the connection end at the lower end being connected with the first circuit; two steel sheets arranged in the shell, one of the steel sheets being connected with the first section of the second circuit, and the other steel sheet being connected with the second section of the second circuit; a pressing rod arranged in the shell, one end of the pressing rod extending to the outside of the shell, a handle being arranged on one end of the pressing rod, a reset spring being arranged on the pressing rod and located between the handle and the shell; and an electric brush arranged in the shell and connected with the pressing rod, a contact sheet being arranged on one end of the electric brush and connected with the thyristor voltage regulating circuit board.

[0008] Preferably, the shell is provided with a capacitor, two contact ends being arranged on the capacitor, one of the contact ends being connected with the first section of the second circuit, and the other contact end being connected with the second section of the second circuit.

[0009] Preferably, a plurality of buckles are fixedly arranged on the outer wall of the lower half shell, two connection blocks are arranged in the lower half shell, a first clamping groove is arranged in each of the connection blocks, the steel sheets are clamped in the first clamping grooves, a second clamping groove is arranged in each of the connection blocks, the second clamping groove is cross-shaped, and the first section of the second circuit and the second section of the second circuit are clamped in the two second clamping grooves respectively.

[0010] Preferably, a baffle is arranged in the lower half shell, a gap is formed between the baffle and the lower half shell, the first circuit is clamped in the gap between the baffle and the lower half shell, a fixing block is arranged in the lower half shell, a third clamping groove is arranged in the fixing block, and the third circuit is clamped in the third clamping groove.

[0011] Preferably, a plurality of connection sheets are fixedly arranged on the outer wall of the upper half shell, a clamping groove is arranged in each of the connection sheets, the clamping groove is used for cooperating with the buckles, a heat dissipation groove is arranged in the upper half shell, the heat dissipation groove is located above the thyristor voltage regulating circuit board and is used for dissipating heat of the thyristor voltage regulating circuit board, and two wiring grooves are arranged in the upper half shell, the positions of the two wiring grooves correspond to the positions of the two steel sheets.

[0012] It is preferable that one end of the shell is provided with an adjusting member according to any one of the above solutions.

[0013] It is preferable that the first line, the second line and the third line are all in a stamping integrated structure according to any one of the above solutions.

[0014] Compared with the prior art, the application has the following advantages and beneficial effects:

[0015] In the application, the neutral line and the live wire are connected to the second line through a steel sheet, and stable connection can be achieved with additional tools. This design not only speeds up the installation, but also reduces the risk caused by improper operation.

[0016] The additional aspects and advantages of the application will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a three-dimensional schematic view according to an embodiment of the application;

[0019] Figure 2 is a first perspective view of a split structure according to an embodiment of the application;

[0020] Figure 3 is a second perspective view of a split structure according to an embodiment of the application;

[0021] Figure 4 is a third perspective view of a split structure according to an embodiment of the application;

[0022] Figure 5 is a three-dimensional schematic view according to an embodiment of the application; Figure 4 is an enlarged schematic view of A in FIG. 8;

[0023] Figure 6 is a lower half shell schematic view according to an embodiment of the application;

[0024] Figure 7 is a capacitor connection schematic view according to an embodiment of the application;

[0025] Figure 8 is a second line connection schematic view according to an embodiment of the application;

[0026] Figure 9 is a third line connection schematic view according to an embodiment of the application.

[0027] In the diagram: 1. Outer shell, 11. Upper shell, 11. Connecting piece, 12. Wiring groove, 12. Lower shell, 1201. Buckle, 1202. Connecting block, 1203. Baffle, 1204. Fixing block, 2. Thyristor voltage regulating circuit board, 3. First circuit, 31. First output terminal, 4. Second circuit, 41. First segment, 42. Second segment, 4201. Second output terminal, 5. Third circuit, 6. Steel sheet, 7. Pressure rod, 71. Handle, 72. Reset spring, 8. Brush, 81. Contact piece, 9. Capacitor. Detailed Implementation

[0028] like Figures 1 to 9 As shown, a power tool switch includes a housing 1, a silicon controlled rectifier (SCR) voltage regulating circuit board 2, a first circuit 3, a second circuit 4, a third circuit 5, a steel sheet 6, a pressure rod 7, a brush 8, a capacitor 9, and an adjusting component.

[0029] Furthermore, the first line 3 is disposed inside the housing 1, and a first output terminal 31 is fixedly provided on the first line 3, which penetrates the housing 1.

[0030] Furthermore, the second line 4 is a split type with two ends, divided into a first section 41 and a second section 42, both of which are set inside the outer casing 1. A second output terminal 4201 is fixedly provided on the second section 42, and the second output terminal 4201 penetrates through the outer casing 1.

[0031] Furthermore, the third line 5 is disposed inside the outer casing 1, and the third line 5 has two connecting ends distributed vertically. The connecting end at the upper end is connected to the first segment 41 of the second line 4, and the connecting end at the lower end is connected to the first line 3.

[0032] Specifically, the first section 41 and the second end 42 of the first line 3, the second line 4, and the third line 5 all adopt a metal sheet stamping integrated structure.

[0033] Furthermore, the thyristor voltage regulating circuit board 2 is disposed inside the housing 1.

[0034] Furthermore, there are two steel sheets 6 in total. One steel sheet 6 is connected to the first segment 41 of the second line 4, and the other steel sheet 6 is connected to the second segment 42 of the second line 4. The steel sheet 6 is an elastic component.

[0035] Furthermore, the pressure rod 7 is disposed inside the housing 1, one end of the pressure rod 7 extends to the outside of the housing 1, a handle 71 is installed on one end of the pressure rod 7, and a return spring 72 is provided on the pressure rod 7. The return spring 72 is located between the handle 71 and the housing 1, and the return spring 72 provides a return force for the pressure rod 7.

[0036] Further, the brush 8 is arranged in the shell 1 and connected to the pressing rod 7, one end of the brush 8 is provided with a contact sheet 81, the contact sheet 81 is connected with the thyristor voltage regulating circuit board 2.

[0037] Further, the capacitor 9 is arranged in the shell 1, the capacitor 9 is provided with two contact ends, one of the contact ends is connected with the first section 41 of the second line 4, the other contact end is connected with the second section 42 of the second line 4, the first section 41 and the second section 42 of the second line 4 are connected through the capacitor 9.

[0038] Further, the adjusting part is arranged at one end of the shell 1.

[0039] Further, the shell 1 is composed of an upper half shell 11 and a lower half shell 12.

[0040] A plurality of buckles 1201 are fixedly arranged on the outer wall of the lower half shell 12.

[0041] Two connecting blocks 1202 are arranged in the lower half shell 12, and a first clamping groove is arranged on each of the two connecting blocks 1202, and the steel sheet 6 is clamped in the first clamping groove.

[0042] A second clamping groove is arranged on each of the two connecting blocks 1202, the second clamping groove is cross-shaped, and the first section 41 of the second line 4 and the second section 42 of the second line 4 are clamped in the two second clamping grooves respectively.

[0043] A baffle 1203 is arranged in the lower half shell 12, and a gap is formed between the baffle 1203 and the lower half shell 12, and the first line 3 is clamped in the gap between the baffle 1203 and the lower half shell 12.

[0044] A fixing block 1204 is arranged in the lower half shell 12, and a third clamping groove is arranged on the fixing block 1204, and the third line 5 is clamped in the third clamping groove.

[0045] Further, a plurality of connecting sheets 11 are fixedly arranged on the outer wall of the upper half shell 11, and a clamping groove is arranged on each of the connecting sheets 11, and the clamping groove is used in cooperation with the buckle 1201.

[0046] A heat dissipation groove is arranged on the upper half shell 11, and the heat dissipation groove is arranged above the thyristor voltage regulating circuit board 2, and is used for heat dissipation of the thyristor voltage regulating circuit board 2.

[0047] Two wiring grooves 12 are arranged on the upper half shell 11, and the positions of the two wiring grooves 12 correspond to the positions of the two steel sheets 6.

[0048] In use, the live wire is connected to one of the steel sheets 6 (the steel sheet 6 connected to the first section 41 of the second line 4) through the terminal slot 12, the live wire being between the steel sheet 6 and the first section 41 of the second line 4, and the steel sheet 6 compresses the live wire, the zero line is connected to the other steel sheet 6 (the steel sheet 6 connected to the second section 42 of the second line 4) through the terminal slot 12, the zero line being between the steel sheet 6 and the second section 42 of the second line 4, and then the two levels of the electric tool are connected to the first output end 31 and the second output end 4201 respectively.

Claims

1. An electric power tool switch characterized by comprising: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

2. An electric power tool switch according to claim 1, characterized by: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

3. The electric power tool switch according to claim 1, characterized by: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

4. An electric power tool switch according to claim 3, wherein: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

5. An electric tool switch according to claim 4, characterized in that: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

6. The power tool switch of claim 1, wherein: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof.

7. The electric power tool switch according to claim 1, characterized by: The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. The utility model relates to a controllable silicon voltage regulating circuit board, and relates to a controllable silicon voltage regulating circuit board and a shell thereof. 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