JPH075288Y2 - Screwdriver structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a screwdriver structure of a screw, more specifically, a screw and a screwdriver tool for this screw, and the tool is inclined even when it is perpendicular to the screw. The present invention relates to a screwdriver structure that enables a screwing operation even in a state.

[Prior Art] Several structures and combinations have been proposed and put into practical use as screwdriver structures for screwing in screws.

That is, a screwdriver with a minus or plus engaging part at the tip and a screw with a minus or plus groove on the head, a socket wrench and a hexagon head screw, a hexagon wrench and a hexagon socket For example, a combination with an attached screw.

By the way, when screwing in the screw, as shown in FIG. 8, the handle 2 of the screwdriver 1 touches the bend 3 or the narrow place depending on the working conditions such as the bend or the narrow place, and the shaft center of the screw is touched. On the other hand, there are times when the screwdriver tool 1 cannot be engaged vertically.

[Problems to be solved by the device]

However, all of the conventional screwdriver structures allow the screwing operation in a vertical relationship between the screw and the screwdriver tool, so under the working conditions described above, the combination of socket wrench and hexagon head screw is used. The screwdriver structure including a combination of a hexagon wrench and a hexagonal screw causes a problem that the screwdriver cannot be operated.

Further, in the case of the combined structure of the screwdriver 1 having the screw 4 provided with the plus groove and the plus engagement portion 5 shown in FIG.
It is not impossible to irregularly screw the engaging part 5 into the plus groove of the screw head 4a in a slanted manner, but the amount of engagement between the plus groove and the engaging part 5 decreases, so There is a problem that the plus groove of the screw head 4a is crushed by the joint portion 5, the screw 4 cannot be completely screwed in, and it becomes impossible to enter during the construction.

Therefore, the present invention enables complete screwing without damaging the head of the screw even under the working condition in which the screwdriver is inclined with respect to the axis of the screw, and also in the vertical working condition. It is an object of the present invention to provide a screwdriver structure for a screw, which can prevent the occurrence of glitches between the turning tools and ensure the straight-moving performance of the screw.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the first invention comprises a screw and a screwdriver for this screw, and the screwdriver has a spherical body having a polygonal peripheral surface at the tip of an angular axis. The screw is formed with a polygonal tool engagement hole on the head into which the spherical body fits, and the engagement hole is formed in the spherical body with the screw and the screwdriver tool arranged coaxially. This is a structure in which the tip of the square shaft has a fitting depth.

The second invention comprises a screw and a screw turning tool for the screw. The screw turning tool is formed by providing a spherical body having a polygonal peripheral surface on a tip end surface of a shaft portion, and the screw is a head part. There is a polygonal tool engagement hole in which a spherical body is fitted and the upper end opening widens.The tip end surface of the angular axis is set with the tool engagement hole and the screw turning tool arranged coaxially. Is formed so as to contact the upper surface of the head, and the upper surface of the head is an inclined surface that descends from the periphery of the opening of the tool engaging hole toward the outer periphery.

The third invention is composed of a screw and a screw turning tool for the screw. The screw turning tool is formed by providing a spherical body having a polygonal peripheral surface at the tip of the shaft portion, and the screw is provided on the head. A polygonal tool engagement hole into which a spherical body is fitted is provided, and a screw and a screwdriver are fitted to each other in a coaxially arranged state at the tip of the spherical body and the bottom surface of the tool engagement hole. In this configuration, a convex portion and a concave portion are provided.

[Action]

First idea When the screw and the screwdriver are screwed in a vertical relationship, the tip of the square shaft fits into the tool engagement hole to prevent the screw and the screwdriver tool from grabbing and to ensure the straight advance performance of the screw. .

When inclining the screwdriver with respect to the screw and screwing in, only the spherical body should be fitted in the tool engagement hole, and the screwdriver should be tilted at an arbitrary angle to the screw. The rotation torque can be transmitted, a sufficient amount of fitting can be ensured between the spherical body and the tool engagement hole, and the screw head is not damaged.

Second idea When screwing in the vertical state, the tip surface of the shaft part abuts the head of the screw to prevent the screw and screwdriver tool from wobbling. When screwing in the inclined state, the tip surface of the shaft part It is sufficient to bring the screw head into contact with the inclined surface of the head, and it is possible to secure a fitting amount capable of transmitting the screwing torque to the spherical body and the tool engagement hole.

Third idea When screwing in the vertical state, the tip of the spherical body and the convex portion and the concave portion provided on the bottom surface of the tool engaging hole are fitted to each other to prevent the screw and the screwdriver tool from wobbling and to screw in the inclined state. At this time, it is sufficient to make the fitting of the spherical body into the tool engagement hole shallow and to incline the screwdriver.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the first embodiment shown in FIGS. 1 to 3, the screwdriver structure comprises a screw 11 and a screwdriver tool 21 for the screw 11, and the screwdriver tool 21 has a polygonal square shaft 22. It is formed by providing a spherical body 23 having a polygonal peripheral surface at its tip, and the screw 11 has a polygonal tool engaging hole 13 in a head 12. The screwdriver 21 has a handle provided at the end of the square shaft 22.

The angular axis 22 and the spherical body 23 are both formed in a hexagonal shape.
The outer diameter of the spherical body 23 and the diameter of the spherical body 23 are set to be equal, and the upper end of the spherical body 23 connected to the angular axis 22 is a small-diameter throttle portion 24.

Further, the tool engagement hole 13 provided in the head 12 of the screw 11 is a spherical body.
23 is formed into a hexagonal hole that fits exactly, and its depth is, as shown in FIG. 2, when the screw 11 and the screwdriver tool 21 are coaxial and vertical, and the tip of the angular axis 22 is located. It is set to the depth that allows a fixed amount of fitting.

The first embodiment is constructed as described above, and under the condition that the screwdriver 21 can be screwed in while being perpendicular to the screw 11, as shown in FIG. The spherical body 23 and the tip of the square shaft 22 are fitted into the inside of 13.

By fitting the tip of the square shaft 22 into the tool engagement hole 13, the screw 11 and the screwdriver tool 21 are maintained in the coaxial center state, prevent the occurrence of rattling, and ensure the straight traveling state of the screw 11, and the spherical body twenty three
And the screwdriver 21 at the fitting portion of the square shaft 22 and the tool engagement hole 13.
The rotational torque of is transmitted to the screw 11, and the screw 11 can be screwed.

Further, under working conditions such as a bend or a narrow place where the screwdriver 21 cannot be arranged vertically to the screw 11, as shown in FIG. ,
The screwdriver tool 21 fits only the spherical body 23.

The spherical body 23 is a screwdriver tool inside the tool engagement hole 13.
It becomes possible to freely rotate 21 in all tilting directions, and by making the narrowed portion 24 of the spherical body 23 face the opening edge of the tool engagement hole 13, the screwdriver tool 21 can be tilted with respect to the axis of the screw 11. Since the hexagonal tool engaging hole 13 and the spherical body 23 having a hexagonal outer circumference can be inclined, the rotation of the screwdriver tool 21 can be transmitted to the screw 11, The screw 11 can be screwed in without trouble even in an irregular arrangement in which the screwdriver 21 is inclined.

Next, a second embodiment shown in FIGS. 4 and 5 will be described. The same parts as those in the first embodiment will be described using the same reference numerals. The same applies to the following examples.

In the second embodiment, the screwdriver tool 21 has a spherical body on the tip surface 32 of the shaft portion 31 with a conical portion 33 having a small diameter on the tip side.
It has a structure with 23.

The screw 11 has a conical portion at the top of the tool engagement hole 13 provided in the head 12.
The upper surface of the head portion 12 is an inclined surface 15 that descends from the periphery of the opening of the expanding portion 14 toward the outer periphery, which is formed in the expanding portion 14 into which 33 is fitted.

As shown in FIG. 4, when the spherical body 23 is fitted into the tool engaging hole 13 by making the screw 11 and the screwdriver tool 21 upright, the tool engaging hole 13 has a tip surface 32 of the shaft portion 31. The depth is set so that the upper surface of the head 12 abuts around the engagement hole 13.

In the case shown, the contact between the tip surface 32 of the shaft portion 31 and the upper surface of the head portion 12 is
Although an example of the annular line contact is shown, an annular flat surface may be provided around the expanded portion 14 on the upper surface of the head 12 so as to be in surface contact.

The second embodiment has the above-described structure, and under the condition that the screwdriver 21 can be screwed in while being perpendicular to the screw 11, as shown in FIG. It is sufficient to fit the spherical body 23 in 13 and bring the tip surface 32 of the shaft portion 31 into contact with the periphery of the expansion portion 14 on the upper surface of the head portion 12.
11 and the screwdriver tool 21 are kept coaxial with each other at the abutting portion, prevent the occurrence of graffiti and ensure the straight advance state of the screw 11, and screw the screw member at the fitting portion of the spherical body 23 and the tool engagement hole 13. tool
Transmit the rotation of 21 to screw 11.

Further, under the working condition in which the screwdriver 21 cannot be arranged vertically with respect to the screw 11, the spherical body 23 is shallowly fitted into the tool engaging hole 14 of the screw 11 as shown in FIG. By bringing the tip end surface 32 of 31 into contact with the inclined surface 15 of the head 12, the screwdriver tool 21 can be inclined with respect to the screw 11 to transmit the rotation.

The third embodiment shown in FIGS. 6 and 7 is a screwdriver tool 21.
Is formed by a shaft portion 31 and a spherical body 23 provided at the tip thereof, and the upper portion of the spherical body 23 is a narrowed portion 24 having a small diameter.

The tool engagement hole 13 provided in the screw 11 is set to a depth at which the spherical body 23 is fitted, and the convex portion 41 and the other end are provided on one of the tip of the spherical portion 23 and the bottom surface of the tool engagement hole 13. A concave portion 42 into which the convex portion 41 is fitted is provided in the.

The third embodiment is configured as described above, and under the condition that the screw 11 and the screwdriver tool 21 can be made vertical, as shown in FIG. 6, a spherical body 23 is formed in the tool engagement hole 13 of the screw 11. Inserted, convex
It suffices that the 41 and the concave portion 42 be fitted to each other, and the vertical state of the screw 11 and the screwdriver 21 is held by the fitting portion without any fluctuation.

Further, under the condition that the screwdriver tool 21 is inclined and screwed into the screw 11, the spherical body 23 is shallowly fitted into the tool engagement hole 13 as shown in FIG. When the fitting is released, the screw 11 can be screwed in with the screwdriver 21 inclined.

〔effect〕

As described above, according to the present invention, it is possible to prevent the occurrence of rattling with the screw and the screwdriver tool in a vertical state and to secure the straight-moving performance of the screw. The screwdriver can be tilted and screwed in. The screwdriver can be screwed in both vertically and inclined, and the screw can always be screwed vertically into the mounting material.

In addition, since the fitting state of the tool engagement hole and the spherical body can be ensured in a state where the screwdriver tool is inclined, the screw head is damaged even if the screwdriver tool is inclined and screwdriver is performed. There is nothing.

[Brief description of drawings]

1 to 3 show a first screwdriver structure according to the present invention.
Fig. 1 shows an embodiment, Fig. 1 is a perspective view of a screwdriver, Figs. 2 and 3 are sectional views showing a state at the time of screwing in, and Figs. 4 and 5 are states of the second embodiment at the time of screwing in. 6 is a sectional view showing the state of the third embodiment when screwed in, and FIG. 8 is an explanatory view showing a conventional screwdriver structure. 11 …… Screw, 12 …… Head, 13 …… Tool engagement hole, 14 …… Expansion part, 15 …… Inclined surface, 21 …… Screwdriver, 22 …… Square axis, 23 …… Spherical body , 31 …… Shaft, 32 …… Tip surface, 41 ……
Convex part, 42 ... concave part.

Continuation of the front page (72) Ichida Ikuta, 2-3, Morikawachi-nishi, Higashi-Osaka City, Osaka Prefecture Wakai Sangyo Co., Ltd. (56) Reference JP-A-63-154166 (JP, A) JP-A-1 -84975 (JP, A)

Claims (3)

[Scope of utility model registration request] 1. A screw and a screw-turning tool for this screw, wherein the screw-turning tool is formed by providing a spherical body having a polygonal peripheral surface at the tip of an angular axis, and the screw has a spherical body at the head. Is provided with a polygonal tool engagement hole, and this engagement hole has a depth at which the spherical body and the tip of the square shaft fit with the screw and the screwdriver tool arranged coaxially. The screwdriver structure of the screw. 2. A screw and a screw turning tool for the screw, wherein the screw turning tool is formed by providing a spherical body having a polygonal peripheral surface on the tip end surface of the shaft portion, and the screw is spherical on the head. A polygonal tool engaging hole that fits the body and expands the upper opening is provided,
This tool engagement hole is formed in a depth such that the tip end surface of the angular axis abuts the upper surface of the head with the screw and the screwdriver in the coaxially arranged state, and the upper surface of the head is A screwdriver for screws that have an inclined surface that descends from the periphery of the opening toward the outer periphery. 3. A screw and a screw turning tool for the screw, wherein the screw turning tool is formed by providing a spherical body having a polygonal peripheral surface at the tip of a shaft portion, and the screw has a spherical body at the head. Is provided with a polygonal tool engagement hole, and the tip of the spherical body and the bottom surface of the tool engagement hole are engaged with each other in a state where the screw and the screwdriver are coaxially arranged. A screwdriver structure that has a convex portion and a concave portion.