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A kind of variable torque electric screwdriver

An electric screwdriver, variable technology, applied in the direction of screwdrivers, motor tools, wrench, etc., can solve the problems of small torque adjustment range, inconvenient torque adjustment, etc., and achieve the effect of constant and accurate torque setting value

Active Publication Date: 2018-09-11
沧州德安防爆特种工具制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention is simple in structure, easy to assemble and maintain, and the torque is adjustable, but the torque adjustment range of the invention is small, and the torque adjustment is inconvenient

Method used

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  • A kind of variable torque electric screwdriver
  • A kind of variable torque electric screwdriver
  • A kind of variable torque electric screwdriver

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0050] Combine below Figure 1-14 Describe this embodiment, a variable torque electric screwdriver, including a rotating rod 1, a variable torque connecting rod 2, a torque variable mechanism 3, a variable torque plate 4, a clutch assembly I5, a clutch assembly II6, a drive motor 7, a driving gear 8, The intermediate gear 9, the intermediate shaft 10, the housing 11, the calibration gasket 12, the calibration screw 13 and the spring 14, the rotary rod 1 includes a rotary rod body 1-1, a rotary rod connector 1-2 and a working head 1-3, The right end of the rotary rod body 1-1 is welded to the rotary rod connector 1-2, and the left end of the rotary rod body 1-1 is provided with a working head 1-3.

[0051] The torsion variable link 2 includes a torsion variable link body 2-1, a torsion variable rib plate 2-2, a torsion variable link connecting piece I2-3 and a torsion variable link link II2-4, the torsion variable link body 2-1 The upper end is welded to the variable torsion r...

specific Embodiment approach 2

[0058] Combine below Figure 1-14 Describe this embodiment, this embodiment will further explain the first embodiment, the twist rib 2-2 has a triangular structure, and the knob 3-4 is rotated to make the screw connection part 3-2 drive the annular piece 3-1 to move left and right , the inner side of the annular piece 3-1 presses the variable torsion rib 2-2; when the annular piece 3-1 moves to the right, the variable torsion rib 2-2 is stressed, making the right end of the variable torsion connecting rod 2 along the variable torsion plate 4 The radial direction moves inward, thereby reducing the torque arm and reducing the torque; with the movement of the variable torsion connecting rod 2, the distance between the variable torsion plate 4 and the clutch assembly I5 decreases, and the flange column 5-2 inserts The length connected in the flange hole 4-1-1 is constantly increasing.

specific Embodiment approach 3

[0059] Combine below Figure 1-14 Describe this embodiment, this embodiment will further explain Embodiment 1, the diameter of the circular blind hole 6-4 is larger than the diameter of the intermediate shaft 10, and the right end of the intermediate shaft 10 can be inserted into the circular blind hole 6-4 At this time, the intermediate shaft 10 is fixed, and the driving gear 8 drives the inner ring gear in the clutch sleeve 6-1 to rotate through the transmission of the intermediate gear 9, so that the clutch assembly II 6 rotates.

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Abstract

The invention relates to the field of electric tools, in particular to a variable torque electric screw driver. The variable torque electric screw driver comprises a rotating rod, a variable torque connecting rod, a variable torque mechanism, a variable torque disc, a clutch component I, a clutch component II, a driving motor, a driving gear, a middle gear, a middle shaft, a housing, a calibration gasket, a calibration screw and a spring; the rotating rod comprises a rotating rod body, a rotating rod connecting piece and a working head; the right end of the rotating rod body is in welded connection with the rotating rod connecting piece; the working head is arranged at the left end of the rotating rod body; the variable torque connecting rod comprises a variable torque connecting rod body, a variable torque ribbed plate, a variable torque connecting rod connecting piece I and a variable torque connecting rod connecting piece II; and the variable torque ribbed plate is in a triangular structure. The variable torque electric screw driver has torsion calibration and torsion adjustment functions. Compared with the original mode of adjusting a torque value through an elastic component, torque value adjustment in a wider range can be realized, more torque requirements can be met, and the variable torque electric screw driver has higher practicability.

Description

technical field [0001] The invention relates to the field of electric tools, in particular to a variable twist electric screwdriver. Background technique [0002] An electric screwdriver is an electric tool for tightening and loosening screws. Equipped with a mechanism for adjusting and limiting torque, the electric tool is mainly used for the assembly of threaded joints and is one of the necessary tools for most manufacturers. However, most of the existing electric screwdrivers have non-adjustable torque, and the torque-adjustable electric screwdrivers usually adjust the torque by adjusting the pressing force of the elastic element in the clutch, and the torque adjustment range is small. [0003] For example, the patent application number is an electric screwdriver CN201310280385.7, the electric screwdriver includes a handle shell, a handle cap, a motor and a control circuit, a deceleration torque converter box, a main shaft, a screwdriver nozzle, the motor and a control c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B21/00B25B23/147
CPCB25B21/00B25B23/147
Inventor 王祥樟
Owner 沧州德安防爆特种工具制造有限公司
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