JP2001001275A - Screwdriver set and screw holding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the screwing workability of a set in a screwdriver set comprising a screw holding tool removably mounted on a body shaft provided with a screw engagement part on its point end, by forming the screw holding tool by an engagement part slidably engaged with the body shaft and a holding part for holding the setscrew in a holding state. SOLUTION: A cross-tip screwdriver 10 has a body shaft 12 formed of a steel rod and having a cross shaped projection on a screw engagement part of a point part 11, and a grip part 13 is mounted on a basic part of this body shaft 12. A screw holding tool 20 is slidably inserted and fitted to the body shaft 12 of the cross-tip screwdriver 10, and the screw holding tool 20 comprises an engagement part 21 of small diameter, and a point-opened holding part 22 holding a setscrew and a washer in a state that is surrounds outer peripheries of the setscrew and the washer, and is made of a soft resin such as vinyl chloride, synthetic rubber and the like. By using this screwdriver set, the screwing work of the setscrew can be stably executed even in a narrow space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screwdriver set and a screw holder.

[0002]

2. Description of the Related Art In an electric device or a mechanical device in which parts are mounted by screwing, tightening of a set screw at the time of assembly and removal at the time of disassembly are often performed in a narrow space. In particular, in maintenance work on equipment with many components mounted, disassembly and reassembly to remove parts screwed into a recessed position for component inspection and replacement must be performed in a narrow space between adjacent components. Often works.

In order to facilitate the work of attaching and detaching a set screw in such a narrow space, a screw which can magnetize the tip of a screw drive shaft to adsorb and hold a set screw or washer. There is a turn (driver).

[0004] A screwdriver set has also been proposed in which a screw receiving member is attached to a screw drive shaft to receive a set screw or washer which has fallen out so as to prevent the screw from falling.

[0005]

However, a magnetized screwdriver does not perform a holding function on a non-magnetic set screw or washer, and has a small attracting force. There is a disadvantage that it falls off.

Since the screwdriver with the screw receiving member is configured to receive the set screw or washer that has fallen off with the screw receiving member, the screw receiving member has a large appearance and is used in a narrow space in an apparatus having a high component mounting density. It is difficult to insert and use. Moreover, the set screw cannot be held at the tip of the screw drive shaft during the mounting operation.

[0007] It is an object of the present invention to provide a screwdriver set and a screw holder which can increase the reliability of holding a set screw (including a washer).

It is another object of the present invention to provide a screwdriver set and a screw holder that function similarly for non-magnetic screws and washers.

A still further object of the present invention is to provide a screwdriver set and a screw holder having a set screw holding function that can be easily inserted into a small space in a small space and detachably set screws. It is in.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a screwdriver set including a main body shaft having a screw engaging portion formed at a distal end thereof, and a screw holder removably attached to the main body shaft.
The screw holder has a fitting portion slidably fitted to the main body shaft, and a holding portion having a distal end opened so as to embrace and hold the outer periphery of the set screw. Features.

In the screw holder, the fitting portion and the holding portion are integrally formed of a soft resin so as to be elastically deformable.

In the screw holder, the fitting portion and the holding portion are integrally formed in a cylindrical concentric form.

[0013]

FIG. 1 is a longitudinal side view of a screwdriver set including a Phillips screwdriver and a screw holder according to an embodiment of the present invention, and FIG. 2 is a perspective view of the screw holder.

The Phillips screwdriver 10 has a general form in which a handle 13 is attached to the base of a steel rod-shaped main body shaft 12 having a + -shaped projection formed in a screw engaging portion of a tip 11.

The screw holder 20 embraces a small-diameter fitting portion 21 into which the main body shaft 12 of the plus screwdriver 10 is slidably inserted and fitted, and surrounds the outer circumference of a set screw or washer. A large-diameter holding portion 22 having an opening at the end so as to be held is formed integrally with a soft resin such as vinyl chloride or synthetic rubber so as to be elastically deformable. The fitting portion 21 and the holding portion 22 are formed in a cylindrical concentric form.

A working mode of screwing the wiring terminal 30 to the terminal block 40 using the Phillips screwdriver 10 fitted with the screw holder 20 will be described with reference to FIGS.

FIG. 3 shows a main body shaft 1 of a Phillips screwdriver 10.
2 with the screw holder 20 at the distal end 1 of the main body shaft 12.
1, and the head 52 of the set screw 50 in which the washer 60 is fitted to the screw portion 51 and the washer 60 are elastically pushed to spread the tip opening into the tip opening of the holding portion 22. The head 52 and the outer periphery of the washer 60 are held in such a manner that the screw portion 51 faces forward and is held, and is added to the driver groove (+ -shaped groove) formed in the head 52 of the set screw 50. 2 shows a state in which a protrusion of a tip 11 of the driver 10 is engaged. In such a state, the screw portion 51 protruding forward
To the screw hole 41 of the terminal block 40 through the mounting hole 31 of the wiring terminal 30, and lightly drive the set screw 50 by rotating the Phillips screwdriver 10, so that the screw portion 51 is screwed shallowly into the screw hole 41. To temporarily stop.

Thereafter, as shown in FIG. 4, the screw holder 20 is retracted to expose the tip 11 and the wiring terminal 30 is exposed.
The screw is screwed deeper into the screw hole 41 by further rotating the set screw 50 while visually confirming the posture of the set screw and the engagement state between the driver groove of the head 52 of the set screw 50 and the tip end portion 11 of the Phillips screwdriver 10. The terminal 30 is securely fastened to the terminal block 40 and fixed.

According to such a screwing operation, the set screw 50 and the washer 60 to be used are fixed to the tip end of the main body shaft 12 of the Phillips screwdriver 10 by the screw retainer 20 fitted with the washer 60. 11 to 5
Since the screw portion 51 can be engaged with the driver groove 2 and the screw portion 51 can be held in the forward direction, the set screw 50 and the washer 60 are inserted into the narrow space, and the wiring terminal 30 is screwed to the terminal block 40. It becomes easier.

Next, a disassembly operation mode for removing the wiring terminal 30 screwed to the terminal block 40 will be described with reference to FIGS.

First, as shown in FIG. 5, a Phillips screwdriver 10 having a main body shaft 12 having a tip 11 of a projection matching a driver groove of the head 52 of a set screw 50 to be removed
And a fitting portion 21 having an inner diameter matching the body shaft 12 of the Phillips screwdriver 10 and a head 52 of a set screw 50 to be removed.
And a screw holder 20 provided with a holding portion 22 having an inner diameter matching the outer diameter of the washer 60. The screw holder 20 is fitted to the back of the screw drive shaft 12 to expose the tip portion 11, By visually inserting the end portion 11 into the driver groove of the set screw 50 and rotating the set screw 50, the set screw 50 is loosened, and the head 52 and the washer 60 of the set screw 50 lightly float.

Therefore, as shown in FIG.
0 is pushed toward the distal end portion 11 of the screw drive shaft 12 so that the distal end opening of the holding portion 22 is pressed against the head portion 52 of the set screw 50 and the washer 60 to hold and hold these in the distal end opening. Let it.

Then, by further rotating the Phillips screwdriver 10, the set screw 50 is completely removed from the screw hole 41 of the terminal block 40.

According to such a disassembling operation, the connection terminals 3
0 can be pulled out from the screw hole 41 of the terminal block 40 with the set screw 50 and the washer 60 attached to the terminal block 40 held and held in the distal end opening of the holding portion 22 of the screw holder 20. The disassembly work for removing the set screw 50 and the washer 60 from the narrow space without falling down becomes easy.

In assembling and disassembling parts in an actual apparatus, a plurality of types of set screws and washers are handled. Therefore, the screw holder 20 has a plurality of types of fitting portions 21 and holding portions 22 having different diameters. By preparing such a screwdriver, it becomes possible to cope with an operation of attaching and detaching set screws of various sizes using a Phillips screwdriver 10 of various sizes.

The outer diameter of the washer 60 is
0 or smaller than the outer diameter of the head 52 or the washer 60.
Is extremely thin, it is difficult to hold the screw holder 20 at the tip of the holding portion 22 in the disassembling operation. In such a case, use a hook hand aid,
It is preferable to press down the washer 60 or the connection terminal 30 so that the washer 60 or the connection terminal 30 does not fall out of the screw portion 51 of the set screw 50.

Here, the embodiment in which the set screw 50 for attaching the wiring terminal 30 and the washer 60 are attached and detached has been described. However, the same applies to the attachment / detachment work of the set screw for attaching the screw and the other components. Can be applied to

Further, in the above embodiment, a Phillips screwdriver has been exemplified, but a square engaging hole for fitting a flathead screwdriver or a nut, in which the screw engaging portion of the tip end portion 11 is formed as a minus-shaped projection, is formed. The present invention can be similarly applied to various screwdrivers such as a nut driver.

[0029]

According to the present invention, the set screw (including the washer) can be securely held by the screw holder at the tip of the screwdriver. In addition, non-magnetic screws and washers can function similarly.

Further, according to the present invention, since the screw holder has a small appearance, the work of attaching and detaching the set screw by inserting it into a narrow space becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a screwdriver set including a Phillips screwdriver and a screw holder according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view of the screw holder according to the embodiment of the present invention.

FIG. 3 is a longitudinal sectional side view showing an initial stage of a wiring terminal screwing operation using the screwdriver set of the present invention.

FIG. 4 is a vertical sectional side view showing a termination stage of a wiring terminal screwing operation using the screwdriver set of the present invention.

FIG. 5 is a vertical sectional side view showing an initial stage of a wiring terminal disassembling operation using the screwdriver set of the present invention.

FIG. 6 is a vertical sectional side view showing a termination stage of a wiring terminal disassembling operation using the screwdriver set of the present invention.

[Explanation of symbols]

10 plus screwdriver, 11 tip end, 12 body shaft, 20 screw holder, 21 fitting part, 22 holding part.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Mikio Kitagawa 1-15-25 Higashi Kanazawa-cho, Hitachi City, Ibaraki Prefecture F-term in Hitachi Electric Systems Co., Ltd. (reference) 3C038 AA02 AA07 BB04 BC01 EA06

Claims (6)

[Claims] 1. A main body shaft having a screw engaging portion formed at a distal end thereof;
In the screwdriver set provided with a screw holder detachably attached to the main body shaft, the screw holder may surround a fitting portion slidably fitted to the main body shaft and an outer periphery of a set screw. A screwdriver set comprising a holding portion having an open end so as to hold and hold the screwdriver. 2. The screwdriver set according to claim 1, wherein the fitting portion and the holding portion are integrally formed of a soft resin so as to be elastically deformable. 3. The screwdriver set according to claim 2, wherein the fitting portion and the holding portion are integrally formed into a cylindrical concentric shape. 4. A screw holder detachably mounted on a main body shaft of a screwdriver, wherein the holding portion is slidably fitted on the main body shaft, and is held so as to surround an outer periphery of a set screw. A screw holder provided with a holding portion having an opening at the end so as to perform the operation. 5. A screw holder according to claim 4, wherein said fitting portion and said holding portion are integrally formed of a soft resin so as to be elastically deformable. 6. A screw holder according to claim 5, wherein said fitting portion and said holding portion are integrally formed in a cylindrical concentric form.