Precise circuit control device for electric tool

Abstract

The utility model provides a precise circuit control device of an electric tool, which relates to the technical field of electrical equipment, and comprises a control shell, a circuit board is connected inside the control shell through screws, a wiring part is arranged on the top surface of one end of the circuit board, a resistor and a control element are respectively arranged on the top surface of the circuit board, and an adjusting knob is arranged on the top surface of the circuit board. An adjusting element is arranged on the side, close to the wiring part, of the adjusting knob and at the opening position of the front face of the control shell, the adjusting element comprises an adjusting rack, the adjusting knob on a switching power supply of the electric tool can be rotated in a linear movement mode of the adjusting rack, and the output voltage of the electric tool can be accurately controlled by adjusting the ADJ; the adjusting knob can be directly rotated and adjusted clockwise or anticlockwise without using a matched adjusting tool, and meanwhile, a person is prevented from being in direct contact with the adjusting knob, so that the safety of the person during control is greatly improved, the operation is simple, and the adjustment can be accurately completed.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and in particular to a precise circuit control device for electric tools. Background Art

[0002] Precise circuit control of power tools can be achieved by adjusting the switching power supply. Adjusting the voltage of the switching power supply can achieve precise control of parameters such as speed, torque, power, etc. of the power tool, as well as energy saving and protection functions, thereby improving the adaptability, performance and reliability of the tool to meet different working requirements and environmental conditions.

[0003] According to patent publication number CN218603357U, a switching power supply includes a box body, a sealing plate and a bottom plate, the sealing plate is slidably connected to the box body, the bottom plate is installed on one side of the box body, and a plurality of air inlet holes are provided on one side of the bottom plate, a first dustproof component is installed on one side of the bottom plate, and a second dustproof component is installed on the upper surface of the sealing plate; through the cooperation between the cooling fan, the first dustproof component, the second dustproof component and the box body, the cooling fan is used to cool the constant voltage and constant current component in the box body, and the air is introduced into the box body through the cooling holes and ventilation holes under the action of the cooling fan to dissipate heat; the detachable mesh plate and the dustproof net can effectively block dust from entering the box body, reduce the influence of dust on the constant voltage and constant current component, facilitate disassembly and cleaning, and improve the heat dissipation efficiency; at the same time, the cooling fan has a large air volume and makes less noise during heat dissipation.

[0004] The above is an introduction to the circuit control of power tools. Usually, professionals are required to use professional tools to adjust the voltage of the switching power supply in the power tool, so as to adjust the output power of the power tool and accurately adjust the electrical parameters of the tool to complete the circuit control. However, this method is more cumbersome to operate, and there are certain safety hazards when non-professionals make adjustments. Utility Model Content

[0005] The purpose of the utility model is to solve the technical problems in the prior art that it is inconvenient for non-professionals to accurately adjust the switching power supply of the electric tool and there are high safety risks during adjustment, and to propose a precise circuit control device for the electric tool.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a precise circuit control device for an electric tool, comprising a control shell, wherein the internal screws of the control shell are connected to a circuit board, a wiring portion is provided on the top surface of one end of the circuit board, a resistor and a control element are respectively provided on the top surface of the circuit board, an adjustment knob is provided on the top surface of the circuit board, and the adjustment knob is close to the side of the wiring portion, an adjustment element is provided at the opening position on the front of the control shell, the adjustment element includes an adjustment rack, a circumferential array on the surface of the adjustment knob has teeth, and a movable connecting rod is fixed to one end of the adjustment rack.

[0007] Preferably, the teeth on the surface of the adjustment rack are engaged with the teeth on the surface of the adjustment knob, and the adjustment rack is located on the back side of the wiring portion.

[0008] Preferably, a slide groove is provided at the top surface of the control housing, a limit head is fixed at one end of the movable connecting rod, and the limit head and the slide groove cooperate with each other.

[0009] Preferably, a movable groove is provided inside the movable connecting rod, a shift rod is slidably connected in the movable groove, and a clamping plate is connected inside the limiting head.

[0010] Preferably, the movable groove passes through the bottom surface of the limit head, and one end of the shift rod is movably connected to the inside of the limit head, and the part of the clamping plate close to the limit head is an inclined surface.

[0011] Preferably, friction discs are embedded in the through holes on both sides of the limiting head, and a spring is provided between the friction disc and the clamping plate.

[0012] Beneficial effects

[0013] In the utility model, the adjustment knob on the switching power supply of the power tool can be rotated by moving the adjustment rack linearly. By adjusting the ADJ, the output voltage of the power tool can be accurately controlled. The adjustment knob can be directly rotated clockwise or counterclockwise without using the matching adjustment tool, and direct contact with the adjustment knob by personnel is avoided, which greatly improves the safety of personnel during operation. The operation is simple and the adjustment can be completed accurately. By adjusting the voltage, the output power of the power tool can be adjusted to meet different working needs and workpiece material requirements, thereby achieving the effect of increasing or decreasing the power of the power tool and realizing accurate control of the circuit of the power tool. At the same time, the independent limiting structure can be used to limit the adjustment rack after movement to prevent the adjustment rack from moving by itself and causing the adjustment knob to be misadjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric drawing of the present utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is an overall exploded view of the utility model;

[0017] Figure 4 This is an exploded view of the regulating element of the present utility model;

[0018] Figure 5 for Figure 4 A magnified view of location A.

[0019] Legend:

[0020] 1. Control housing; 2. Wiring part; 3. Circuit board; 4. Resistor; 5. Control element; 6. Adjustment element; 61. Adjustment knob; 62. Tooth opening; 63. Adjustment rack; 64. Movable connecting rod; 65. Limit head; 66. Moving slot; 67. Lever; 68. Spring; 69. Friction disc; 610. Clamp; 7. Slide slot. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment:

[0024] Reference Figure 1-5 , including a control housing 1, a circuit board 3 is connected to the control housing 1 by screws inside, a wiring part 2 is provided on the top surface of one end of the circuit board 3, a resistor 4 and a control element 5 are respectively provided on the top surface of the circuit board 3, an adjusting knob 61 is provided on the top surface of the circuit board 3, and the adjusting knob 61 is close to one side of the wiring part 2. The control housing 1, the wiring part 2, the circuit board 3, the adjusting knob 61 and other components constitute the switching power supply of the power tool. The switching power supply is a circuit control device of the power tool. The adjusting knob 61 on the switching power supply can be used to adjust the voltage of the switching power supply, thereby changing the output power of the power tool to adapt to different working requirements and workpiece material requirements, thereby achieving the effect of increasing or decreasing the power of the power tool and realizing precise control of the circuit of the power tool. The adjusting knob 61 is the ADJ part of the switching power supply, which is a component used to adjust and set voltage, current or other parameters. The circuit board 3 includes components such as resistor 4, control element 5 and wiring part 2, so that it can work normally.

[0025] An adjusting element 6 is provided at the opening position on the front of the control housing 1. An independent adjusting element 6 is used to rotate the adjusting knob 61 to change the output power of the power tool, replacing the existing method of using a screwdriver and manual rotation adjustment. The device has an independent adjustment structure, which does not require professionals to use professional adjustment tools for adjustment. At the same time, it avoids direct contact between personnel and the adjusting knob 61, greatly improving the safety of the operator during adjustment. The adjusting element 6 includes an adjusting rack 63. The surface circumferential array of the adjusting knob 61 has a tooth opening 62. The tooth groove on the surface of the adjusting rack 63 is aligned with the adjusting knob 61. The teeth 62 on the surface of the adjustment knob 61 are meshed with each other, and the adjustment rack 63 is located on the back of the wiring part 2. The adjustment knob 61 can be rotated by simply moving the adjustment rack 63. Since the tooth groove part on the surface of the adjustment rack 63 is meshed with the teeth 62 on the surface of the adjustment knob 61, the personnel only need to move the adjustment rack 63 in a straight line to drive the adjustment knob 61 to rotate. Adjusting the voltage of the switching power supply can achieve precise control of the speed, torque, power and other parameters of the power tool, as well as energy saving and protection functions, thereby improving the adaptability, performance and reliability of the tool to meet different working requirements and environmental conditions.

[0026] A movable link 64 is fixed to one end of the adjusting rack 63, and a slide groove 7 is opened at the top surface position inside the control shell 1. A limit head 65 is fixed to one end of the movable link 64, and the limit head 65 cooperates with the slide groove 7. It is necessary to explain that the adjusting rack 63 is connected to the movable link 64, and the movable link 64, the adjusting rack 63 and the adjusting knob 61 are all insulating components. When adjustment is required, it is only necessary to toggle the movable link 64. Since the limit head 65 of the movable link 64 is located in the slide groove 7 of the control shell 1 and cooperates with the slide groove 7, the limit head 65 can be used to make the movable link 64 move linearly along the slide groove 7.

[0027] The movable link 64 is provided with a movable groove 66, and a lever 67 is slidably connected in the movable groove 66. The inner part of the limit head 65 is connected to a clamping plate 610. The movable groove 66 runs through the bottom surface of the limit head 65, and one end of the lever 67 is movably connected to the inner part of the limit head 65, and the part of the clamping plate 610 close to the limit head 65 is an inclined surface. Friction plates 69 are embedded in the through holes on both sides of the limit head 65. A spring 68 is provided between the friction plate 69 and the clamping plate 610. After the adjustment is completed, it is only necessary to push the lever 67 upward to make the lever 67 move along the movable groove 66 of the movable link 64 until the lever 67 moves to the top end. The lever 67 is clamped by the spring 68 and the clamping plate 610. Since the contact part between the clamping plate 610 and the top end of the lever 67 is an inclined end, the space formed between the two sets of clamping plates 610 gradually changes from large to small. The spring 68 is then released to release the spring 68, and the spring 68 is released to release the spring 68. The spring 68 is released to release the spring 68, and the spring 68 is released to release the spring 68. The spring 68 is released to release the spring 68, and the spring 68 is released to release the spring 68.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A precise circuit control device for an electric tool, comprising a control housing (1), characterized in that: The control housing (1) is screwed internally to a circuit board (3), a wiring portion (2) is provided on the top surface of one end of the circuit board (3), a resistor (4) and a control element (5) are provided on the top surface of the circuit board (3), an adjustment knob (61) is provided on the top surface of the circuit board (3), and the adjustment knob (61) is located on a side close to the wiring portion (2), an adjustment element (6) is provided at an opening position on the front of the control housing (1), the adjustment element (6) includes an adjustment rack (63), a tooth opening (62) is provided in a circumferential array on the surface of the adjustment knob (61), and a movable connecting rod (64) is fixed to one end of the adjustment rack (63).

2. The precise circuit control device for electric tools according to claim 1, characterized in that: The tooth grooves on the surface of the adjustment rack (63) and the tooth openings (62) on the surface of the adjustment knob (61) are engaged with each other, and the adjustment rack (63) is located on the back side of the wiring portion (2).

3. The precise circuit control device for electric tools according to claim 1, characterized in that: A sliding groove (7) is provided at the top surface of the control housing (1), and a limiting head (65) is fixed to one end of the movable connecting rod (64), and the limiting head (65) and the sliding groove (7) cooperate with each other.

4. The precise circuit control device for electric tools according to claim 3, characterized in that: A movable groove (66) is provided inside the movable connecting rod (64), a shifting rod (67) is slidably connected inside the movable groove (66), and a clamping plate (610) is connected inside the limiting head (65).

5. The precise circuit control device for electric tools according to claim 4, characterized in that: The movable groove (66) passes through the bottom surface of the limiting head (65), and one end of the shifting rod (67) is movably connected to the inside of the limiting head (65), and the portion of the splint (610) close to the limiting head (65) is an inclined surface.

6. The precise circuit control device for electric tools according to claim 4, characterized in that: Friction discs (69) are embedded in the through holes on both sides of the limiting head (65), and a spring (68) is provided between the friction disc (69) and the clamping plate (610).

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