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Electric spanner

An electric wrench and handle technology, applied in the field of wrenches, can solve the problems of too fast movement of the jaws, small driving torque, insufficient rigidity, etc., and achieve the effect of solving inaccurate opening, increasing driving torque, and increasing safety

Inactive Publication Date: 2008-02-20
GAOYOU BOMEIDA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A wrench is a commonly used tool. It is usually laborious to adjust the opening of the jaws manually.
Especially for places with small space, the hand is not easy to enter the small space. The nut of the adjustment wrench generally needs to be pre-adjusted, so the adjustment of the jaw opening is not very accurate, and sometimes the nut will be twisted and scrapped.
Most of the existing electric wrenches are driven by parallel shaft gears or belts, which are large in size and complex in structure, and cannot be used in small spaces, thus limiting their scope of use.
There is also an external screw electric wrench, due to structural reasons, its rigidity is insufficient and its life is not long
At the same time, the reduction ratio of the existing electric wrench is too small, resulting in too fast movement of the jaws, poor safety, and small driving torque

Method used

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Examples

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Embodiment Construction

[0009] As shown in the figure: the electric wrench includes a handle 1, a body 2, a fixed jaw 3, a movable jaw 4, a battery 5, a micro motor 6, a double pole double throw switch 7, a spur gear 8, a screw 9 and a primary transmission gear 10 , Intermediate gear 11 and shaft 12. The battery and the micromotor are placed in the preset cavity of the handle, and the forward and reverse rotation of the micromotor is controlled by a double-pole double-throw switch, and the cavity of the handle is covered by a cover. The primary transmission gear, intermediate gear, spur gear and screw rod are placed in the pre-designed cavity of the body, and the spur gear is installed in the cavity through the shaft.

[0010] The battery sends current to the circuit board located at the switch through two wires, and the circuit board then sends electricity to the motor through two output wires as a power source for the motor.

[0011] Since the head of the electric wrench adopts the shape of the he...

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Abstract

The invention provides an electric wrench which comprises a handle, a main body, a fixed clamp port and a movable clamp port. The handle is provided with a battery and a micro-machine and a switch is provided between the battery and the micro-machine; the main body is provided with a straight gear and a screw; the main axis of the electric engine drives the primary transmission gear; the primary transmission gear drives the middle gear; the middle gear drives the straight gear; the straight gear drives the screw; and the screw drives the clamp port to move repeatedly. As the invention adopts the two step gears to drive the inner hidden screw, the invention effectively solves the problem of the hand power wrench which has an inaccurate clamp open degree; the invention enhances the transmission torque force and has a simple and beautiful structure. The invention is very convenient in a very small space as the micro-machine can adjust the size of the opening and can ensure that the workpiece can not slide after being clamped.

Description

technical field [0001] The invention relates to a wrench, in particular to an electric wrench. Background technique [0002] A wrench is a commonly used tool, and it is usually laborious to adjust the opening of the jaws manually. Especially for places with less space, the hand is not easy to enter the smaller space to adjust the nut of the wrench, which generally needs to be pre-adjusted, so the adjustment of the opening of the jaws is not very accurate, sometimes causing the nut to slip and be scrapped. Most of the existing electric wrenches are driven by parallel shaft gears or belts, which are large in size and complex in structure, and cannot be used for operations in small spaces, thereby limiting their scope of use. There is also an external screw electric wrench. Due to structural reasons, its rigidity is insufficient and its life is not long. At the same time, the reduction ratio of the existing electric wrench is too small, causing the jaws to move too fast, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B13/12B25B23/16B25B23/00
Inventor 李道平
Owner GAOYOU BOMEIDA MACHINERY MFG
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