CN2269928Y

CN2269928Y - Electric wrench

Info

Publication number: CN2269928Y
Application number: CN 96230531
Authority: CN
Inventors: 胡金生
Original assignee: HUGONG ELECTRIC TOOL GENERAL FACTORY SHANGHAI
Current assignee: HUGONG ELECTRIC TOOL GENERAL FACTORY SHANGHAI
Priority date: 1996-08-22
Filing date: 1996-08-22
Publication date: 1997-12-10
Anticipated expiration: 2006-08-22

Abstract

The utility model relates to an electric wrench which mainly solves the problem of troublesome use. The utility model is characterized in that an external gear is fixed on a motor shaft, an internal gear is fixed on a shaft of a driving shaft linking body, and the external gear on the motor shaft is mutually engaged with the internal gear; a speed control clutch which is sheathed between the internal gear and a linking end is fixed on the shaft of the driving shaft linking body, and a sliding impact block and a spring are sheathed on an output shaft. A rotating impact block is inlaid in the edge where an energy storage body and the driving shaft linking body are fixed, and a push rod is arranged in a hole which is arranged on the driving shaft linking body. One end of the push rod is gored on a ferrule of the speed control clutch, and the other end is gored on the sliding impact block.

Description

Electric wrench

The utility model relates to a kind of electric wrench.

In prior art, the spanner that generally mounts and dismounts screw and nut adopts the lever principle manual operation, so installation and removal are relatively more difficult, uses cumbersome.

The purpose of this utility model provides a kind of fairly simple electric wrench that uses.

The utility model is by motor, driving shaft is conjuncted, the speed solenoidoperated cluthes, moving sliding impact block, spring, bearing, output shaft and energy storage body are formed, it is characterized in that: motor is fixed on the motor cabinet, on motor shaft, be fixed with external gear, the conjuncted axle head of driving shaft by bearing fixing on motor cabinet, internal gear is fixed on the conjuncted axle of driving shaft, external gear and internal gear on the motor shaft are meshing with each other, the speed solenoidoperated cluthes are enclosed between internal gear and the conjuncted end and are fixed on the conjuncted axle of driving shaft, in the middle of the conjuncted conjuncted end of driving shaft, has the hole, be fixed with bearing in the hole, one end of output shaft is by bearing and driving shaft is conjuncted fixes, be with slip impact block and spring on the output shaft, the other end of output shaft fixes by bearing and energy storage body, the conjuncted conjuncted axle of the other end of energy storage body and driving shaft fixes, be embedded with the rotation impact block at energy storage body and the conjuncted edge that fixes of driving shaft, on the conjuncted conjuncted end of driving shaft, has the hole, lay push rod in the hole, one end of push rod withstands on the lasso of speed solenoidoperated cluthes, and the other end withstands on the slip impact block.

After the motor rotation of the present utility model, motor gear drives the internal gear rotation, rotate by the conjuncted speed solenoidoperated cluthes that make of driving shaft, at the speed solenoidoperated cluthes when reaching certain rotating speed, behind the lasso that makes the speed solenoidoperated cluthes under the centrifugal effect, move, push rod loses top power, the slip impact block slides to the rotation impact block under the effect of spring, two impact block phase impact blocks are clashed into mutually drive the output shaft rotation, thereby reach the effect of twisting bolt or nut, when impact block clashes into moment, driving shaft is conjuncted also with regard to the moment stall, and centrifugal of speed control is restored under the effect of extension spring, makes the lasso of speed solenoidoperated cluthes eject push rod forward, under the impact block rebound effect, the slip impact block is broken away from rotate impact block, the conjuncted beginning again under the drive of motor of driving shaft rotated, and goes round and begins again, heavily clash into and finish until installation and removal, very easy to use.

Below in conjunction with accompanying drawing the utility model is elaborated,

Accompanying drawing is a structural representation of the present utility model,

1 expression motor among the figure, motor is fixed on motor cabinet 2, on motor shaft, be fixed with external gear 3, the axle head of driving shaft conjuncted 4 is fixed on the motor cabinet by bearing 5, internal gear 6 is fixed on the conjuncted axle of driving shaft, external gear and internal gear on the motor shaft are meshing with each other, speed solenoidoperated cluthes 7 are enclosed between internal gear and the conjuncted end and are fixed on the conjuncted axle of driving shaft, in the middle of the conjuncted conjuncted end of driving shaft, has the hole, be fixed with bearing 8 in the hole, one end of output shaft 16 is by bearing and driving shaft is conjuncted fixes, be with slip impact block 9 and spring 10 on the output shaft, the other end of output shaft fixes by bearing 11 and energy storage body 12, and the conjuncted conjuncted axle of the other end of energy storage body and driving shaft fixes, and is embedded with rotation impact block 13 at energy storage body and the conjuncted edge that fixes of driving shaft, on the conjuncted conjuncted end of driving shaft, has the hole, lay push rod 14 in the hole, an end of push rod withstands on the lasso 15 of speed solenoidoperated cluthes, and the other end withstands on the slip impact block.

Claims

1. electric wrench, comprise motor, driving shaft is conjuncted, the speed solenoidoperated cluthes, moving sliding impact block, spring, bearing, output shaft and energy storage body, it is characterized in that: motor is fixed on the motor cabinet, on motor shaft, be fixed with external gear, the conjuncted axle head of driving shaft by bearing fixing on motor cabinet, internal gear is fixed on the conjuncted axle of driving shaft, external gear and internal gear on the motor shaft are meshing with each other, the speed solenoidoperated cluthes are enclosed between internal gear and the conjuncted end and are fixed on the conjuncted axle of driving shaft, in the middle of the conjuncted conjuncted end of driving shaft, has the hole, be fixed with bearing in the hole, one end of output shaft is by bearing and driving shaft is conjuncted fixes, be with slip impact block and spring on the output shaft, the other end of output shaft fixes by bearing and energy storage body, the conjuncted conjuncted axle of the other end of energy storage body and driving shaft fixes, be embedded with the rotation impact block at energy storage body and the conjuncted edge that fixes of driving shaft, on the conjuncted conjuncted end of driving shaft, has the hole, lay push rod in the hole, one end of push rod withstands on the lasso of speed solenoidoperated cluthes, and the other end withstands on the slip impact block.