CN105437126A

CN105437126A - Acceleration screwdriver

Info

Publication number: CN105437126A
Application number: CN201510976436.9A
Authority: CN
Inventors: 袁名伟; 万文艳; 刘春英
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2016-03-30

Abstract

The invention relates to an acceleration screwdriver. The acceleration screwdriver comprises a cutter rod, a cutter holder, a shank, a sleeve and a tail cap; the cutter holder is fixedly mounted at the back end of the cutter rod; the cutter holder is mounted in the shank; the sleeve is mounted between the cutter holder and the shank; and the tail cap is fixedly mounted at the tail end of the shank. The acceleration screwdriver is characterized in that the cutter holder is mounted in the shank in a manner of radial rotation and axial positioning; a planet gear acceleration mechanism is arranged between the cutter holder and the front end of the shank, and includes a fixed gear, a driving gear and a driven gear; the fixed gear is fixedly mounted in the front end of the shank; the driven gear is correspondingly mounted on the cutter holder; and the driving gear is mounted between the fixed gear and the driven gear in an engaging manner. The acceleration screwdriver is reasonable in design, uses the planet gear acceleration mechanism for increasing the rotating speed, shortens the part disassembly time, is wide in application range, and solves the problems of long part disassembly time and high long screw working difficulty in a general screwdriver.

Description

A kind of speedup screwdriver

Technical field

The present invention relates to screwdriver, particularly a kind of speedup screwdriver.

Background technology

Screwdriver is that a kind of being used for twists screw with the instrument forcing it in place, is usually used in fastened by screw and part removal.Existing screwdriver mainly contains a word and cross two kinds of cutter heads, and screwdriver kind also has a lot: common, combination, electronic etc.But existing screwdriver is single times of speed and rotates on market, namely handle of a knife revolves the cutter hub that turns around and rotates a circle thereupon.When running into the very large screw of length or the situation is critical, the dismounting speed of these screwdrivers is comparatively slow, and operating efficiency is low, can not solving practical problems quickly.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, provide a kind of planet circular system structure that adopts to realize triple speed rate, thus increase cutter head rotating speed, save time and easy to operate triple speed rate screwdriver.

The present invention solves its technical problem and is achieved through the following technical solutions:

A kind of speedup screwdriver, comprise knife bar, knife rest, handle of a knife, sleeve, tail cap, knife bar rear end is fixed with knife rest, knife rest is installed in handle of a knife, between knife rest and handle of a knife, sleeve is installed, handle of a knife tail end is fixedly mounted with tail cap, it is characterized in that: described knife rest radial rotating, axial location is installed in handle of a knife, planetary gear speed increasing mechanism is provided with between knife rest and handle of a knife front end, this planetary gear speed increasing mechanism comprises fixed gear, driving gear and driven gear, described fixed gear is fixedly mounted with in inside, described handle of a knife front end, the described driven gear of corresponding installation on described knife rest, engage between fixed gear with driven gear and described driving gear is installed.

And described knife rest tail end is bolted installation location-plate, this location-plate is installed on the made positioning table of sleeve inner, and handle of a knife front end is fixedly mounted with front apron, and the axial locator card of described driven gear is loaded between sleeve and front apron.

And described fixed gear and the gearratio of driving gear are 1:3.

And, described driving gear and driven gear external toothing.

Advantage of the present invention and beneficial effect are:

1, triple speed rate screwdriver of the present invention, is provided with planetary gear speed increasing mechanism between knife rest and handle of a knife front end, adopts planet circular system to realize triple speed rate, when dismantling part, handle of a knife rotates a circle, and knife bar can rotate three circles, increase the rotating speed of screwdriver, the take-down time shortens, and simple operation saves time.

2, triple speed rate screwdriver of the present invention, knife rest tail end is bolted installation rear position plate, this location-plate is installed on the made positioning table of sleeve inner, handle of a knife front end is fixedly mounted with front apron, the axial locator card of described driven gear is loaded between sleeve and front apron, realize knife rest axial location, prevent it by the axial float occurred during external force.

3, triple speed rate screwdriver of the present invention, the driving gear in train and driven gear external toothing, when handle of a knife rotates, ensure that the uniformity of knife bar and its direction of rotation, make quick-detachment.

4, reasonable in design of the present invention, structure is simple, adopts planetary gear speed increasing mechanism to realize triple speed rate, shortens the part take-down time, time saving and energy saving, applied widely.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is planetary gear speed increasing mechanism structural representation.

Description of reference numerals

1-pin, 2-screw, 3-handle of a knife, 4-sleeve, 5-bolt, 6-tail cap, 7-location-plate, 8-gear, 9-front apron, 10-knife rest, 11-knife bar, 12-driving gear, 13-driven gear, 14-fixed gear.

Detailed description of the invention

Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.

A kind of speedup screwdriver, comprise knife bar 11, knife rest 10, handle of a knife 3, sleeve 4, tail cap 6, knife bar rear end is fixed with knife rest, knife bar front end is fixed by pin 1 and knife rest, knife rest is installed in handle of a knife, between knife rest and handle of a knife, sleeve is installed, handle of a knife tail end is fixedly mounted with tail cap, facilitate manual contact operation, the innovation of this screwdriver is: knife rest radial rotating, axial location is installed in handle of a knife, handle of a knife is fixed on baffle plate by screw 2, planetary gear speed increasing mechanism is provided with between knife rest and handle of a knife front end, this planetary gear speed increasing mechanism comprises fixed gear 14, driving gear 12 and driven gear 13, described fixed gear is fixedly mounted with in inside, described handle of a knife front end, the described driven gear of corresponding installation on described knife rest, engage between fixed gear with driven gear and described driving gear is installed.

Knife rest tail end fixedly mounts location-plate 7 by bolt 5; this location-plate is installed on the made positioning table of sleeve inner; the knife rest axially-movable caused when preventing handle of a knife from rotating; knife rest front end is shaped with front apron 9; front apron medial surface location and installation is on handle of a knife front apron; by planetary gear speed increasing mechanism by front apron and external isolation, play the effect of protection attractive in appearance.

Fixed gear and be 1:3 from the gearratio between master gear, when dismantling part, hand-held tail cap place handle of a knife revolves and turns around, transmit rotating speed to fixed gear, rotating speed is passed to driving gear through the gearratio of 1:3 by fixed gear, and the number of teeth such as driving gear and driven gear engages, rotating speed becomes the driven gear drive knife bar rotation of three times, the knife bar rotating speed of contact part reaches three circles, increases cutter head rotating speed, achieves rapid and convenient dismounting.

Driving gear and driven gear external toothing, handle of a knife rotates counterclockwise, drive fixed gear shaft rotates counterclockwise, driving gear is reverse to be rotated clockwise, now rotate counterclockwise with the driven gear of its external toothing is reverse, drive knife bar to rotate counterclockwise, ensure handle of a knife and knife bar direction of rotation uniformity, meet screwdriver operation principle, strengthen operating efficiency.

Operation principle of the present invention:

Adopt planetary gear speed increasing mechanism, make driving gear identical with the number of teeth of driven gear, the number of teeth of fixed gear is that three times of driving gear realize triple speed rate, and driving gear and driven gear external toothing, ensure handle of a knife and knife bar direction of rotation uniformity.

Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.

Claims

1. a speedup screwdriver, comprise knife bar, knife rest, handle of a knife, sleeve and tail cap, knife bar rear end is fixed with knife rest, knife rest is installed in handle of a knife, between knife rest and handle of a knife, sleeve is installed, handle of a knife tail end is fixedly mounted with tail cap, it is characterized in that: described knife rest radial rotating, axial location is installed in handle of a knife, planetary gear speed increasing mechanism is provided with between knife rest and handle of a knife front end, this planetary gear speed increasing mechanism comprises fixed gear, driving gear and driven gear, described fixed gear is fixedly mounted with in inside, described handle of a knife front end, the described driven gear of corresponding installation on described knife rest, engage between fixed gear with driven gear and described driving gear is installed.

2. triple speed rate screwdriver according to claim 1, it is characterized in that: described knife rest tail end is bolted installation location-plate, this location-plate is installed on the made positioning table of sleeve inner, handle of a knife front end is fixedly mounted with front apron, and the axial locator card of described driven gear is loaded between sleeve and front apron.

3. triple speed rate screwdriver according to claim 1, is characterized in that: described fixed gear and the gearratio of driving gear are 1:3.

4. triple speed rate screwdriver according to claim 1, is characterized in that: described driving gear and driven gear external toothing.