CN211992700U

CN211992700U - Quick screwdriver

Info

Publication number: CN211992700U
Application number: CN202022348398.1U
Authority: CN
Inventors: 张小刚; 谢华; 裴亚军; 李涛
Original assignee: Huadian Weifang Power Generation Co Ltd
Current assignee: Huadian Weifang Power Generation Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2020-11-24
Anticipated expiration: 2030-10-21

Abstract

The utility model relates to a screwdriver field, specific quick screwdriver that says so, including handle and screwdriver bit, still include ratchet and turning arm. The ratchet mechanism is arranged on the ratchet seat, the handle is vertically arranged above the ratchet seat, and the screwdriver head is vertically arranged below the ratchet seat and connected with the ratchet mechanism. The ratchet mechanism can drive the screwdriver head to rotate, the crank arm is rotatably arranged on the lower portion of the handle, the crank arm rotates upwards to be abutted against the handle, and the crank arm rotates downwards to be located in the horizontal direction to be perpendicular to the screwdriver head. The utility model is convenient to operate, and can easily achieve the purpose of fast screwing; when a part with larger tightening force is encountered, the crank arm can increase the moment, and the part with larger tightening force can be easily screwed or unscrewed; can also change the screwdriver head of different head types as required and carry out work to satisfy the demand of screwing up or unscrewing different parts.

Description

Quick screwdriver

Technical Field

The utility model relates to a screwdriver field, specific quick screwdriver that says so.

Background

Screwdrivers are often used in practice, and conventional screwdriver bits are usually fixed to a handle. When the part is used, the hand holding the handle can only rotate a small angle, so when the part needs to be continuously rotated for multiple times, the part needs to be stopped to rotate the hand in the opposite direction for an angle. Sometimes the hand-held screwdriver is temporarily withdrawn from the part to effect reverse rotation, which requires the screwdriver bit to be aligned with the part again, sometimes with the other hand assisting in releasing the handle from the hand holding the handle to effect reverse rotation. Obviously, the two modes are inconvenient and influence the operation efficiency; the screw head is easy to be damaged; often cannot be tightened or loosened when parts with relatively high tightening force are encountered.

Disclosure of Invention

In order to solve the technical problems, the utility model discloses a quick screwdriver, which is convenient to operate and can easily achieve the purpose of quick screwing by arranging a ratchet mechanism; when meeting the part that the tight power is great, the turning arm can increase moment, can easily realize screwing up or unscrewing great tight power part.

The utility model relates to a quick screwdriver, including handle and screwdriver head, still include ratchet and turning arm. Ratchet sets up on the ratchet seat, the handle vertical set up in ratchet seat top, screwdriver head vertical set up in ratchet seat below with ratchet is connected, ratchet can drive screwdriver head rotates. The crank arm is rotatably arranged at the lower part of the handle, the crank arm can be abutted against the handle when rotating upwards, and the crank arm can be positioned in the horizontal direction and vertical to the screwdriver head when rotating downwards.

Preferably, the crank arm and the handle are connected by a first shaft pin.

Preferably, the crank arm is located in a crank arm space formed on the side surface of the handle and matched with the crank arm, and the first axle pin is located at the lower part of the crank arm space. The top end of the handle, which is positioned right above the first shaft pin, is provided with a top ball and a top ball spring, a positioning hole which can accommodate the top ball and the top ball spring is formed above the connecting lever, and the top of the connecting lever, which is positioned above the positioning hole, can just press the top ball.

Preferably, the ratchet mechanism comprises a ratchet wheel, two pawls, a steering cam and a steering knob. The ratchet wheel is rotatably arranged on the ratchet wheel seat, and the steering button and the steering cam are fixed together through a second shaft pin and are rotatably arranged on the ratchet wheel seat. The direction of the steering cam is controlled through the steering button, and the protruding end of the steering cam ejects one pawl outwards, so that the other pawl is meshed with the ratchet wheel.

Preferably, a pawl spring is arranged on the outer side of each pawl, one end of each pawl spring is fixed on the pawl, and the other end of each pawl spring is fixed on the ratchet wheel seat. When the protruding end of the steering cam ejects one pawl outwards, the other pawl is ejected inwards under the action of the elastic force of the pawl spring, so that the other pawl is meshed with the ratchet wheel.

Preferably, a screwdriver head mounting hexagon is fixedly connected to the ratchet mechanism, and the screwdriver head is detachably mounted on the ratchet mechanism through the mounting hexagon.

The utility model has the advantages that: the utility model is convenient to operate, and can easily achieve the purpose of fast screwing; when a part with larger tightening force is encountered, the crank arm can increase the moment, and the part with larger tightening force can be easily screwed or unscrewed; can also change the screwdriver head of different head types as required and carry out work to satisfy the demand of screwing up or unscrewing different parts.

Drawings

The invention will be further explained with reference to the accompanying drawings, which are simplified schematic drawings and which illustrate, by way of illustration only, the basic structure of the invention and do not constitute an undue limitation on the invention:

fig. 1 is a schematic structural view of a quick screwdriver of the present invention;

FIG. 2 is a schematic view of the screwdriver head of the present invention when removed;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view of section A-A of FIG. 1;

FIG. 5 is a partial cross-sectional view of FIG. 1;

FIG. 6 is a schematic structural view of the crank arm of the present invention turning to a horizontal position;

in the figure: 1. the handle, 2, the screwdriver head, 3, the ratchet seat, 4, the crank arm, 5, the first shaft pin, 6, the crank arm space, 7, the ejector ball, 8, the ejector ball spring, 9, the positioning hole, 10, the ratchet, 11, the pawl, 12, the steering cam, 13, the steering button, 14, the second shaft pin, 15, the mounting hexagon and 16, the pawl spring.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure, as the terms used are used to describe particular embodiments only, and are not intended to limit the exemplary embodiments based on the disclosure.

Fig. 1 shows that the utility model relates to a quick screwdriver, including handle 1 and screwdriver head 2, still include ratchet 10 mechanism and turning arm 4. The ratchet 10 mechanism is arranged on the ratchet seat 3, the handle 1 is vertically arranged above the ratchet seat 3, the screwdriver head 2 is vertically arranged below the ratchet seat 3 and connected with the ratchet 10 mechanism, and the ratchet 10 mechanism can drive the screwdriver head 2 to rotate. The crank arm 4 is rotatably mounted at the lower part of the handle 1, the crank arm 4 can be abutted against the handle 1 when rotating upwards, and as shown in fig. 6, the crank arm 4 can be positioned in the horizontal direction and vertical to the screwdriver head 2 when rotating downwards.

As shown in fig. 5, the crank arm 4 is connected to the handle 1 via a first shaft pin 5. The crank arm 4 is positioned in a crank arm space 6 formed on the side surface of the handle 1 and matched with the crank arm 4, and the first shaft pin 5 is positioned at the lower part of the crank arm space 6. The top end of the handle 1, which is positioned right above the first shaft pin 5, is provided with a top bead 7 and a top bead spring 8, a positioning hole 9 which can accommodate the top bead 7 and the top bead spring 8 is formed above the crank arm 4, and the top of the crank arm 4, which is positioned above the positioning hole 9, can just press the top bead 7.

As shown in fig. 3 and 4, the ratchet 10 mechanism includes a ratchet 10, two pawls 11, a steering cam 12, and a steering knob 13. The ratchet 10 is rotatably mounted on the ratchet seat 3, and the steering button 13 and the steering cam 12 are fixed together by a second axis pin 14 and are rotatably mounted on the ratchet seat 3. The direction of the steering cam 12 is controlled by the steering button 13, and the protruding end of the steering cam 12 pushes out one of the pawls 11 to the outside, so that the other pawl 11 is engaged with the ratchet 10. A pawl spring 16 is arranged on the outer side of each pawl 11, one end of the pawl spring 16 is fixed on the pawl 11, the other end of the pawl spring 16 is fixed on the ratchet wheel seat 3, when the protruding end of the steering cam 12 pushes out one of the pawls 11 to the outer side, the other pawl 11 pushes the inner side under the elastic force of the pawl spring 16, so that the pawl is meshed with the ratchet wheel 10.

As shown in fig. 2, a mounting hexagon 15 of the screwdriver bit 2 is fixedly connected to the ratchet 10 mechanism, and the screwdriver bit 2 is detachably mounted on the ratchet 10 mechanism through the mounting hexagon 15. The screwdriver bit 2 with different head shapes can be conveniently replaced during working so as to meet different working requirements.

The screwdriver head 2 is fixed on a part, when the handle 1 is rotated, the ratchet wheel seat 3 rotates along with the handle 1, the screwdriver head 2 is driven by the ratchet wheel 10 mechanism to rotate simultaneously, when the handle 1 is rotated in the opposite direction, the ratchet wheel 10 of the ratchet wheel 10 mechanism does not rotate, and then the screwdriver head 2 does not rotate. Therefore, the handle 1 can be held by hand to rotate back and forth continuously without stopping, and the purpose of quick screwing can be achieved easily. When the screwdriver bit 2 needs to be reversed, the steering button 13 is pushed, the ratchet wheel 10 is meshed with the other pawl 11, and the screwdriver bit 2 is further reversed. The operation is convenient.

When meeting the great part of tight power, open connecting lever 4 and make it be in the horizontal direction, lean on connecting lever 4 to drive ratchet 10 mechanism and screwdriver head 2 and rotate together, can increase moment, can easily realize screwing up or unscrewing great tight power part. When the screwdriver head 2 with different head types needs to be used for working, the replacement of the screwdriver head 2 can be easily realized through the installation hexagonal structure 15, so that the requirements for screwing or unscrewing different parts are met.

In the description of the present invention, terms describing orientations such as "vertical", "above", "below", "lower", "upward", "downward", "outside", "inside", etc. are all based on the positional relationship shown in the drawings, where "outside" and "inside" are based on the steering cam 12, and the side close to the steering cam 12 is "inside", and the side far from the steering cam 12 is "outside". The above terminology is for the purpose of simplifying the description of the present invention only and is not to be construed as limiting the present invention.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a quick screwdriver, includes handle and screwdriver head, its characterized in that: still include ratchet and connecting lever, ratchet sets up on the ratchet seat, the handle vertical set up in ratchet seat top, screwdriver head vertical set up in ratchet seat below with ratchet is connected, ratchet can drive screwdriver head rotates, the rotatable installation of connecting lever is in the lower part of handle, the connecting lever upwards rotate can with the handle is close together, the connecting lever downwards rotate can be located the horizontal direction with screwdriver head is mutually perpendicular.

2. The quick screwdriver of claim 1, wherein: the crank arm is connected with the handle through a first shaft pin.

3. The quick screwdriver of claim 2, wherein: the crank arm is located the handle side form with in the crank arm assorted crank arm space, the first pivot pin is located the lower part in crank arm space be located in the handle be located top directly over the first pivot is installed and is pushed up pearl and top pearl spring, the crank arm top form can with push up the pearl with the locating hole that the top pearl spring held, lie in on the crank arm the top of locating hole top can compress tightly just the top pearl.

4. The quick screwdriver of claim 1, wherein: the ratchet mechanism comprises a ratchet wheel, two pawls, a steering cam and a steering button, the ratchet wheel is rotatably mounted on the ratchet wheel seat, the steering button and the steering cam are fixed together through a second shaft pin and rotatably mounted on the ratchet wheel seat, the direction of the steering cam is controlled through the steering button, and one pawl is ejected outwards by the protruding end of the steering cam, so that the other pawl is meshed with the ratchet wheel.

5. The quick screwdriver of claim 4, wherein: and when the protruding end of the steering cam ejects one of the pawls outwards, the other pawl is pushed inwards under the action of the elastic force of the pawl spring so as to be meshed with the ratchet wheel.

6. The quick screwdriver according to any one of claims 1 to 5, wherein: the ratchet mechanism is fixedly connected with a screwdriver head mounting hexagon, and the screwdriver head is detachably mounted on the ratchet mechanism through the mounting hexagon.