JPH081813Y2 - Screwdriver tool - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is to form a hard driver body by integrally connecting a shaft body to a pipe made of a hard material in an orthogonal state to form a hard driver body, and embedding the upper portion of the hard driver body in a plastic grip. A driver is provided at the tip of the more protruding shaft body to form a screwdriver that is easy to rotate when attaching and detaching the screw, and by inserting a tightening rod into the pipe of the grip part, if necessary. The present invention relates to a screwdriver attachment / detachment that can easily and safely generate a large torque as a T-type or L-type with handle.

[0002]

2. Description of the Related Art A so-called screwdriver in which a driver rod is provided on a grip to be gripped with one hand is the easiest to use for attaching and detaching the screw and has been widely used since ancient times. It is said that the grip can be rotated in the palm on the same axis as the screw and the driver rod, so that it can be operated easily and quickly, and it is easy to use, but on the other hand, only the palm or wrist. Since it rotates with the force of, there is a limit to the rotational force that can be generated.

Therefore, these tools are usually used only for small screws (small screws with a slot, small screws with a cross hole, etc.), and when stronger tightening force is required. For this purpose, hexagon bolts, hexagon socket head bolts, and other Torx screw bolts are required. In this case, tools such as an adjustable wrench and spanner are mainly used, and these apply torque from the direction perpendicular to the screw axis Therefore, quick rotation is impossible except in special cases.

[0004]

Conventionally, there is a tool which is provided with a lateral hole in a grip portion of a screwdriver, and a tightening rod is inserted into the lateral hole to generate a large torque as a T type or an L type. ing.

However, the conventional product has a weak coupling strength between the shaft body having the driver portion at the tip and the grip, and the lateral hole of the grip itself is not strong enough. I needed a tool.
That is, since the grip itself is mostly made of plastic or wood, there is too much difference in rigidity or strength from the shaft body made of metal (made of steel and quenched and tempered), and the connection between the shaft body and the grip is large. However, it is difficult to design a structure that can withstand a strong tightening force, and in practice, neither the connection between them nor the strength of the lateral hole of the grip is a structure that can withstand the torque necessary and sufficient for final tightening. Therefore, when a strong final tightening force is required, specialized tools such as an adjustable wrench, spanner, and hex key (key wrench) are required.

The present invention solves the above drawbacks, and when tightening with a strong force is required, a driver tool capable of safely transmitting a necessary and sufficient torque only to the shaft body without a twisting moment acting on the grip. Is provided.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

A hard driver body a in which a shaft body 3 is integrally connected to a pipe 2 made of a hard material in an orthogonal state.
A plastic grip 1 is formed by using the upper part of the hard driver body a as a plastic core material, and the end of the pipe 2 is provided on the side surface of the plastic grip 1 in an open state to insert a tightening rod b. The present invention relates to a driver tool in which a rod insertion hole 4 is formed and a driver portion 5 is provided at the tip of a hard driver body a protruding from the plastic grip 1.

[0009]

A large torque is required because the plastic grip 1 is formed by using the upper part of the hard driver body a in which the shaft body 3 is integrally connected to the pipe 2 made of a hard material in an orthogonal state and integrally with the pipe 2 as a plastic core material. In that case, insert a tightening rod b of an appropriate length into the tightening rod insertion hole 4 of the pipe 2 and use it as a T-type or L-type handle style.
When turning quickly with a small torque, it is used like a screwdriver grip. When a large torque is applied as described above, the torque is transmitted to the shaft body 3 through the pipe 2 and no force acts on the plastic grip 1. On the other hand, when the torque is small, the plastic grip 1 is operated as a screwdriver.
It is possible to apply a torsional moment with quick action.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show an example of a preferred embodiment of the present invention. A hard driver body a in which a shaft body 3 is integrally connected to a pipe 2 made of a hard material in an orthogonal state.
A plastic grip 1 is formed by using the upper part of the hard driver body a as a plastic core material, and the end of the pipe 2 is provided on the side surface of the plastic grip 1 in an open state to insert a tightening rod b. A rod insertion hole 4 is formed, and a driver portion 5 is provided at the tip of a hard driver body a protruding from the plastic grip 1.

FIG. 1 of the drawings is an application example to a hexagonal bar wrench used for tightening a hexagon socket head bolt, and FIG. 2 is an application example to a plus bit type screwdriver used for tightening a cross socket head bolt. The tip of the shaft body 3 can be applied to various screws such as a minus bit, a torx, and a box type, and the driver portion 5 applied to each screw is integrally formed.

Although the shaft main body 3 and the pipe 2 are directly connected by welding, brazing, etc., the pipe 2 is attached to the pipe 2 in a T shape as shown in FIG. 3, for example, by casting or die casting. It is also possible to integrally form the shaft main body 3 into the mounting pipe 6 by press-fitting or inserting the shaft main body 3 or by a connecting method such as rivet connection. It should be noted that the plastic grip 1 is preferably molded by using a hard driver body a in which a shaft body 3 is integrally connected to a pipe 2 made of a hard material in an orthogonal state and integrally with the upper part of the hard driver body as a plastic core material. The body a may be manufactured by press-fitting and coupling the shaft body 3 to the pipe 2 part with the mounting pipe 6 as shown in FIG.

There is also a type of screwdriver in which the outer circumference of a grip portion called a cushion grip is made of a rubbery elastic material so that it is easy to grip and feel, and it is easy to apply force. In the case of coupling with the shaft main body 3, first, a plastic called a hard grip, which is generally used as a handle, is molded as a grip with large unevenness,
It is manufactured by double molding to remold a rubber soft grip on it.

In the case of the present invention, the hard driver body a in which the shaft body 3 is orthogonally and integrally coupled to the pipe 2
Since the upper part of this hard driver body a is formed as the core material, it is not necessary to mold the hard grip, and the entire grip can be molded with rubber plastic, creating a grip with higher cushioning properties. Is possible.

[0015]

As described above, the present invention forms a hard driver body by integrally connecting the shaft body to the pipe made of a hard material as described above in an orthogonal state and integrally, and using the upper portion of the hard driver body as a plastic core material. A plastic grip is molded, the end of the pipe is opened on the side of this plastic grip, and a tightening rod insertion hole for inserting the tightening rod is formed.The screwdriver is attached to the tip of the shaft body protruding from the plastic grip. Since a part is provided, even if a tightening rod is inserted into the tightening rod insertion hole on the side of the plastic grip and a large torque is applied to the shaft body, a large torque can be applied to the driver part regardless of the material of the plastic grip. Moreover, since it is a screwdriver-shaped tool, it can be swung quickly, and the inner diameter of the pipe can be used in most work sites. By setting the diameter to fit the shaft diameter of the turning, it is not, a su a driver tool utility that may be added a large torque equivalent to the wrenches in particular the need for other specialized tools.

[Brief description of drawings]

FIG. 1 is a cross-sectional view in which a driver portion of the present embodiment is a ball-point-shaped driver tool with a part cut away.

FIG. 2 is a cross-sectional view of a driver tool having a plus bit-shaped driver portion according to the present embodiment.

FIG. 3 is a perspective view of a rigid driver body in which a mounting pipe integrally projects in a T-shape from the pipe of the present invention, and the shaft body is coupled to the mounting pipe.

[Explanation of symbols]

 1 Plastic grip 2 Pipe 3 Shaft body 4 Tightening rod insertion hole 5 Driver part a Hard driver body b Tightening rod

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A hard driver body is formed by integrally connecting a shaft body to a pipe made of a hard material in an orthogonal state and integrally with each other, and a plastic grip is provided with an upper portion of the hard driver body as a plastic core material. The end of the pipe is opened on the side of this plastic grip to form a tightening rod insertion hole for inserting the tightening rod, and the driver part is attached to the tip of the hard driver body protruding from the plastic grip. A driver tool characterized by the provision of.