CN205363712U - Screwdriver of triple speed - Google Patents

Abstract

The utility model relates to a screwdriver of triple speed, including cutter arbor, knife rest, handle of a knife, sleeve and tail cap, the knife rest is equipped with admittedly to the cutter arbor rear end, and the knife rest is installed in the handle of a knife, installs the sleeve between knife rest and the handle of a knife, and tail cap, its characterized in that are adorned admittedly to the handle of a knife tail end: the knife rest radially rotates, axial positioning installs in the handle of a knife, is provided with planet wheel acceleration mechanism between knife rest and the handle of a knife front end, and the star gear acceleration mechanism of this bank includes fixed gear, driving gear and driven gear the inside solid dress of handle of a knife front end fixed gear correspond the installation on the knife rest driven gear, meshing installation between fixed gear and driven gear the driving gear. The utility model relates to a rationally, using the planet wheel acceleration mechanism increase speed of rotation, shortening the part takedown time, application scope is extensive. The problem of ordinary screwdriver to install and remove the part chronic, big to the long screw work degree of difficulty is solved.

Description

The screwdriver of triple speed rate

Technical field

This utility model relates to screwdriver, particularly to the screwdriver of a kind of triple speed rate.

Background technology

Screwdriver is a kind of for twisting the screw instrument to force it in place, is usually used in fastened by screw and part removal.Existing screwdriver mainly has a word and two kinds of cutter heads of cross, and screwdriver kind also has a lot: common, combination, electronic etc..But on market, existing screwdriver is single times of speed rotation, and namely handle of a knife revolves cutter hub concomitant rotation one circle that turns around.When running into the very big screw of length or the situation is critical, the dismounting speed of these screwdrivers is relatively slow, and work efficiency is low, it is impossible to solving practical problems quickly.

Summary of the invention

The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that a kind of employing planet circular system structure realizes triple speed rate, thus increasing cutter head rotating speed, saves time and easy to operate triple speed rate screwdriver.

This utility model solves its technical problem and is achieved through the following technical solutions:

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

And, described knife rest tail end is bolted installation location-plate, and this location-plate is installed on the positioning table that sleeve inner is made, 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, the gear ratio of described fixed gear and driving gear is 1:3.

And, described driving gear and driven gear external toothing.

Advantage of the present utility model and having the beneficial effect that

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

2, triple speed rate screwdriver of the present utility model, knife rest tail end is bolted installation rear position plate, this location-plate is installed on the positioning table that sleeve inner is made, 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 axially to position, it is prevented that the axial float occurred when it is by external force.

3, triple speed rate screwdriver of the present utility model, driving gear in train and driven gear external toothing, when handle of a knife rotates, it is ensured that knife bar rotates the concordance in direction so that quickly dismantle.

4, this utility model reasonable in design, simple in construction, adopt planetary gear speed increasing mechanism to realize triple speed rate, shorten the part take-down time, time saving and energy saving, applied widely.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

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 utility model is described in further detail, and following example are illustrative, is not determinate, it is impossible to limits protection domain of the present utility model with this.

A kind of screwdriver of triple speed rate, including 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, sleeve is installed between knife rest and handle of a knife, handle of a knife tail end is fixedly mounted with tail cap, facilitate manual contact operation, the innovation of this screwdriver is in that: knife rest radial rotating, axial location and installation is in handle of a knife, handle of a knife is fixed on baffle plate by screw 2, planetary gear speed increasing mechanism it is provided with between knife rest and handle of a knife front end, this planetary gear speed increasing mechanism includes fixed gear 14, driving gear 12 and driven gear 13, it is fixedly mounted with described fixed gear inside described handle of a knife front end, the described driven gear of corresponding installation on described knife rest, the described driving gear of installation is engaged between fixed gear with driven gear.

Knife rest tail end fixedly mounts location-plate 7 by bolt 5; this location-plate is installed on the positioning table that sleeve inner is made; prevent the knife rest axially-movable that handle of a knife causes when 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 gear ratio between master gear, when dismantling part, the handle of a knife rotation of hand-held tail cap place is turned around, transmission rotating speed is to fixed gear, and rotating speed is passed to driving gear through the gear ratio 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 of three times and drives knife bar to rotate, the knife bar rotating speed of contact part reaches three circles, increases cutter head rotating speed, it is achieved that rapid and convenient is dismantled.

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 reverse with the driven gear of its external toothing rotate counterclockwise, drive knife bar to rotate counterclockwise, it is ensured that handle of a knife and knife bar direction of rotation concordance, meet screwdriver operation principle, strengthen work efficiency.

Operation principle of the present utility model:

Adopting 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, it is ensured that handle of a knife and knife bar direction of rotation concordance.

Although disclosing embodiment of the present utility model 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 without departing from this utility model and claims, various replacements, to change and modifications be all possible, therefore, scope of the present utility model is not limited to embodiment and accompanying drawing disclosure of that.

Claims (4)

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

2. the screwdriver of triple speed rate 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 positioning table that sleeve inner is made, 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. the screwdriver of triple speed rate according to claim 1, it is characterised in that: the gear ratio of described fixed gear and driving gear is 1:3.

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