CN207915356U - A kind of reversed power-assisted screwdriver - Google Patents

Abstract

The utility model discloses a reverse power-assisted screwdriver, which comprises a force-bearing round rod. The front end of the force-bearing round rod is a screwdriver connection port. The helical notch of the helical notch has a helix angle of not less than 45 degrees. A handle sleeve is sleeved on the stressed round rod, and a raised slider is arranged on the inner wall of the handle sleeve. The raised slider When unloading the screw, hold the handle sleeve with your hand without turning it, use a hammer to hit the top of the handle sleeve, and the arc-protruded slider on the inner wall of the handle sleeve moves downward along the spiral slot and presses The stressed round rod rotates in the opposite direction along the direction in which the screw to be unloaded is screwed in, and the screw is unscrewed. The utility model does not require special machine tool processing, and is handmade and simple. It is not only suitable for the removal of slotted or cross-shaped screws, but also suitable for the removal of inner square screws after replacing the screwdriver head. It is easy to operate and has a high success rate. Specialized technical training.

Description

A kind of reverse assist screwdriver

technical field

The utility model relates to a hardware tool, in particular to a reverse power-assisted screwdriver.

Background technique

In actual work, when disassembling and assembling mechanical equipment, we often encounter the problem that screws are difficult to remove, especially when the slot or cross notch is incomplete, it is even more difficult to remove. Worse, it is also very difficult to remove the screws that have been corroded for a long time. It is often helpless. It is necessary to find professional technicians to use special tools to remove them, and sometimes even damage the equipment.

Contents of the invention

The purpose of this utility model is to propose a reverse power-assisted screwdriver, which uses a slide block in the casing to fit a stressed round rod with a screw buckle, and the stressed round rod is connected to the screwdriver head, and the casing is hammered to Drive the screwdriver head to rotate in reverse to realize the removal of difficult-to-remove screws.

In order to achieve the above object, the technical solution of the utility model is: a reverse power-assisted screwdriver, including a force-bearing round rod, the front end of the force-bearing round rod is a screwdriver connection port, wherein, the force-bearing round rod is provided with a The helical notch with the same rotation direction as the turnbuckle of the screw to be unloaded, the helix angle of the helical notch is not less than 45 degrees, and a handle sleeve is sleeved on the stressed round rod, on the inner wall of the handle sleeve There is a raised slider, and the raised slider is snapped into the helical notch. When removing the screw, snap the screwdriver head into the screwdriver connection port, put the screwdriver head against the notch on the screw head to remove the screw, and hold it by hand. The handle sleeve does not rotate, use a hammer to hit the top of the handle sleeve, the arc-protruded slider on the inner wall of the handle sleeve moves downward along the spiral notch, and presses the force-bearing round rod to rotate in the opposite direction along the screwing direction of the screw to be removed. Unscrew the screw.

The solution is further as follows: the stressed round rod includes a metal sleeve and a solid metal rod, the solid metal rod is inserted into the metal sleeve and fixedly connected, the front end of the metal rod is provided with a screwdriver connection port, and on the sleeve, along the circumferential surface An anti-helical notch opposite to the direction of rotation of the screw to be unloaded is provided.

The solution is further as follows: the handle sleeve includes an inner tube and an outer tube, and a through hole is arranged on the inner tube, and a cylinder is inserted into the through hole to form the raised slider, and the inner tube and the outer tube are connected to each other. set of fixed connections.

The solution is further as follows: the outer surface of the handle sleeve is provided with non-slip prismatic protrusions or grooves.

The solution is further as follows: the anti-helical notch is arranged one or more continuously along the circumferential surface of the stressed round rod, and there are at least two raised sliders, and the two raised sliders are arranged on the opposite surface In the anti-helical notch of the stressed round rod.

Compared with the prior art, the utility model has the beneficial effects that no special machine tool processing is required, and the manual production is simple. It is not only suitable for the removal of slotted or cross-shaped screws, but also suitable for the removal of inner square screws after replacing the screwdriver head. , simple operation, high success rate, no special technical training is required.

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Description of drawings

Fig. 1 is a schematic sectional view of the structure of the utility model;

Fig. 2 is a diagram of the usage state of the utility model after assembly.

Detailed ways

A reverse power-assisted screwdriver, as shown in Figure 1, the reverse power-assisted screwdriver includes a force-bearing round rod 1, the front end of the force-bearing round rod is a screwdriver connection port 2, wherein the force-bearing round rod is arranged along the circumferential surface There is a helical notch 101 with the same rotation direction as the turnbuckle of the screw to be unloaded, and the helix angle a of the helical notch is not less than 45 degrees, which is between 45 degrees and 60 degrees. In this embodiment, it is actually 50 degrees. A handle cover The tube 3 is set on the stressed round rod 1, and the inner wall of the handle sleeve 3 is provided with a raised slider 4, and the raised slider 4 is snapped into the helical notch 101. When removing the screw, as shown in the figure As shown in 2, snap the screwdriver head 5 into the screwdriver connection port 2, place the screwdriver head in the notch on the screw head where the screw is to be removed, hold the handle sleeve with your hand without turning it, and hit the top 301 of the handle sleeve with a hammer, Because the handle cover does not turn, the protruding slide block 4 on the inner wall of the handle sleeve tube moves downward along the spiral notch and can press the force-bearing round bar to reversely rotate along the direction of unloading the screw, and the screw is unscrewed.

In order to make it convenient, it is not necessary to use a lathe mechanic, but to make it manually with existing parts. This embodiment uses a preferred solution: as shown in Figure 1, the stressed round rod 1 includes a metal sleeve 102 And a solid metal rod 103, the metal sleeve 102 and the solid metal rod 103 are all easy to find in some waste parts, the solid metal rod is inserted into the metal sleeve for fixed connection, using welding or riveting; the front end of the metal rod is provided with a screwdriver connection port , the connection port is a connection port for a variety of tools, suitable for screwdrivers with square nuts, etc. Before inserting the solid metal rod into the metal sleeve, process it with a hacksaw and a file along the circumferential surface of the sleeve. Use a file to form a circular arc to form a spiral notch opposite to the direction of rotation of the screw to be unloaded. This is very easy for a general fitter, and then the solid metal rod 103 is inserted and fixed.

Similarly: as shown in Figure 1, the handle sleeve includes an inner tube 301 and an outer tube 302, which brings convenience to the inner wall of the processing handle sleeve 3 with a raised slider 4. A through-hole is provided on the top through a drill hole, and the force-bearing round rod 1 is inserted first, and then a cylinder is inserted into the through-hole and welded and fixed to form the raised slider, and then the inner tube and the outer tube are fixedly connected to form a An integral handle sleeve 3 . Since the handle sleeve 3 needs to be held by hand to prevent it from rotating, in the embodiment: the outer surface of the handle sleeve is provided with non-slip prismatic protrusions or grooves 302 as shown in FIG. 2 .

Wherein, the helical notches 101 provided along the circumferential surface of the stressed round rod 1 may be provided with one on half of the circumferential surface, or a plurality of them in the axial direction, or provided with one or more on the complete circumferential surface, that is Said: the said helical notches are arranged along the circumferential surface of the stressed round rod one or more continuously, correspondingly, there are at least two raised sliders, and the two raised sliders are arranged on the opposite surface In the anti-helical notch of the force-bearing round rod, the force is more uniform and the effect is better.

Claims (5)

1. the front end of a kind of reversed power-assisted screwdriver, including stress round bar, stress round bar is screwdriver connector, feature exists In circumferentially surface is provided with spiral notch identical with the spiral shell button direction of rotation for the screw of being unloaded, spiral to the stress round bar The spiral angle of notch is not less than 45 degree, and a handle sleeve is sleeved on the stress round bar, on the inside of the handle sleeve Boss slider is provided on wall, boss slider is caught in spiral notch.

2. reversed power-assisted screwdriver according to claim 1, which is characterized in that the stress round bar includes a metallic sheath Pipe and a solid metal, solid metal are inserted into metal sleeve and are fixedly connected, and the front end of metallic rod is provided with screwdriver company Interface is provided with the backpitch notch opposite with the screw socket direction of rotation for the screw of being unloaded in described sleeve pipe upper edge circumferential surface.

3. reversed power-assisted screwdriver according to claim 1, which is characterized in that the handle sleeve includes inner tube and outer Pipe, is provided with open-work in said inner tube, and being inserted into open-work using cylinder forms the boss slider, said inner tube and outer tube It is nested and is fixedly connected.

4. reversed power-assisted screwdriver according to claim 1, which is characterized in that the handle sleeve outer surface is provided with anti- Sliding prismatic or groove.

5. reversed power-assisted screwdriver according to claim 2, which is characterized in that the backpitch notch is along the stress Round bar circumferential surface is arranged one or continuous a plurality of, and at least two pieces of the boss slider, two pieces of boss slider opposite faces are set It sets in the stress round bar backpitch notch.