JPH0657557U - Screwdriver - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a screwdriver which can easily fix a small-diameter screw and can be screwed in a small space regardless of the size and material of the diameter. [Structure] In a screwdriver 1 for tightening a small screw 8, a receiving nut 2 that is screwed and fixed to the tip of the screwdriver 1, and a spring steel clamping plate that is bent in an isosceles triangle shape and opens only at the tip. 3, the upper and lower ends of the holding plate 3 that are opened are curved in an arc shape, and the edges of the upper and lower ends of the holding plate 3 are wound in a tubular shape. It consists of an open metal fitting 5 which is inserted into the cylinder and abuts the outside of the holding plate 3, and a lock nut 7 which is held between the holding plate 3 and the receiving nut 2 and screwed together. The clamping plate 3 is opened and closed by a pressing operation, and the machine screw 8 is clamped and fixed by the clamping portion 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screwdriver for tightening a small screw such as a small screw and a wood screw in a narrow space where a fingertip does not fit in a screwed portion of the back of a car body or a mechanical device.

[0002]

[Prior art]

 Conventionally, this kind of device has not been devised in particular, and when tightening a small diameter screw in a narrow space, tape is wrapped around the tape with the tip of the screwdriver inserted into the head of the small diameter screw. And tightening the screw while it is fixed, and when the material of the small-diameter screw is iron, it is known that the tip of the screwdriver is magnetized and the screw is magnetically attached and tightened. There is.

[0003]

[Problems to be solved by the device]

 As mentioned in the prior art, attaching a small-diameter screw to the tip of a screwdriver with tape requires a separate tool to remove the tape after tightening the screw, and Magnetically attaching small-diameter screws is limited to those made of iron material, and considering the stability of fixing the screws, the tip of the screwdriver is limited to those with a cross hole shape. Had.

The present invention has been made in view of the above problems of the conventional technology, and its object is to easily fix a small-diameter screw, and to improve the size and material of the diameter. The purpose is to provide a screwdriver that can be screwed in even in a small space.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention, in a screwdriver for tightening a small-diameter screw, a receiving nut that is screwed and fixed to the tip end portion of the screwdriver, and an isosceles triangular shape to open only the tip end. An attachment plate made of spring steel, an attachment upper and lower ends of the attachment plate which are curved in an arc shape, and an attachment portion in which each edge of the upper and lower ends is wound in a tubular shape, and the upper and lower attachments. An opening metal fitting that is inserted into the cylinder of the fitting part and contacts the outside of the fitting plate, and a tip of the screwdriver is inserted into the bottom surface of the fitting plate and contacts the receiving nut to attach the fitting plate. It is composed of a retaining nut and a lock nut that is screwed together with the receiving nut, and the clamping plate is opened and closed by the pressing operation of the upper and lower open metal fittings, and the small diameter screw is clamped and fixed by the clamping part.

[0006]

[Action]

 The spring steel clamping plate with only the tip open holds the clamping force that tends to close the inside of the clamping part.

[0007] The opening metal fittings that come into contact with the outside of the holding plate give an opening force to open to the outside by pressing, and overcome the holding force of the holding plate to hold the holding plate above and below the holding plate. Open the section.

A receiving nut and a lock nut, which are screwed into the screwdriver, fix the holding plate to the front end of the screwdriver.

[0009]

【Example】

 An embodiment will be described with reference to the drawings, as shown in FIGS. 1 and 2.

At the tip of the screwdriver 1 for tightening the machine screw 8, a receiving nut 2 is screwed and fixed to the tip of the screwdriver 1, and is bent in an isosceles triangle shape so that only the tip is opened. The attachment plate 3 is provided.

The upper and lower ends of the holding plate 3 that are opened are curved in an arc shape, and the edges of the upper and lower holding plates 3 serve as a holding portion 4 that is wound in a tubular shape. An opening metal fitting 5 is provided which is inserted into the cylinder and comes into contact with the outside of the attachment plate 3.

The tip of the screwdriver 1 is inserted into the insertion hole 6 on the bottom surface of the holding plate 3 and is brought into contact with the receiving nut 2, and the holding nut 7 which is held between the receiving plate 2 and the holding nut 3 is screwed. .

In this embodiment, when tightening the machine screw 8 with the screwdriver 1, the upper and lower open metal fittings 5 are pressed to open the sandwiched portion 4, and the head of the machine screw 8 is sandwiched to screw the machine screw 8 in place. When it is fixed to the tip of the screwdriver 1 and it is not necessary to fix it with the machine screw 8, the upper and lower open metal fittings 5 are pressed to open the attachment part 4, and the screw 8 is rotated from the machine screw 1 and the attachment plate 3 at the tip of the screwdriver 1 is attached. Remove.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. It is easy to fix the small diameter screw at the tip of the screwdriver by sandwiching it with a clasp plate, and it can be easily fixed by pressing the open metal fittings, and it can be attached and detached regardless of the diameter and material of the screw even in a narrow space. Also, since the screw is fixed by the holding force of the spring steel holding plate, the screw can be fixed securely.

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment according to the present invention.

FIG. 2 is a schematic diagram showing a perspective view of the attachment plate of FIG.

[Explanation of symbols]

 1 Screwdriver 2 Receiving nut 3 Clamping plate 4 Clamping part 5 Opening metal fitting 6 Insertion hole 7 Lock nut 8 Machine screw

Claims (1)

[Scope of utility model registration request] 1. In a screwdriver for tightening a small-diameter screw, a retaining nut is screwed and fixed to the tip of the screwdriver and bent into an isosceles triangle shape so that only the tip is opened. The upper and lower tip ends of the holding plate are curved in an arc shape, and the edges of the upper and lower ends are wound into a cylindrical holding portion, and the upper and lower holding portions are arranged in the cylinder. Opening metal fittings, which are inserted and come into contact with the outside of the holding plate, are provided, and the tip of the screwdriver is inserted into the bottom surface of the holding plate to abut the receiving nut, and the holding plate is attached to the receiving nut. A screwdriver that is characterized by screwing a lock nut that is held between and by pressing the open and close metal fittings to open and close the holding plate, and holding a small-diameter screw at the holding part.