WO2014132535A1

WO2014132535A1 - Hexagonal socket screw

Info

Publication number: WO2014132535A1
Application number: PCT/JP2013/084104
Authority: WO
Inventors: 小林　司
Original assignee: セルジャパン株式会社
Priority date: 2013-02-27
Filing date: 2013-12-19
Publication date: 2014-09-04
Also published as: JP2014163497A; JP5450856B1

Abstract

The hexagonal socket screw (1) comprises a screw body (2), a guard member (3), and an elastic member. The guard member (3) comprises a cover (3A), a guard body (3B) and a sliding shaft (3C). The elastic member (4) is disposed inside a first space (2D) so that one end abuts against the cover (3A) and the other end abuts against the bottom surface of the first space (2D), and has a biasing force to bias the guard body (3B) in the direction for closing the first opening (2A) of the first space (2D) with the cover (3A). By moving the cover (3A) in the direction opposite to the biasing direction of the elastic member (4) in opposition to the biasing force, the first space (2D) is configured as a space into which a hexagonal wrench (61) can be fitted.

Description

Hexagon socket head cap screw

The present invention relates to a hexagon socket head screw having a hexagon socket that can be tightened with a hexagon wrench.

The hexagon socket head cap screw or hexagon socket head cap screw that has a hexagon socket on the thread body is widely used.

For example, a hexagon socket head screw is used to attach a tool such as a bite or a drill for processing a workpiece to a target shape in a machine tool that performs metal processing such as a lathe.

The machine tool is provided with a holder body for holding the tool. The holder body is provided with a support member insertion hole through which a support member for supporting the tool is inserted, and a female screw hole communicating with the support member insertion hole. The female screw hole is provided in an oblique direction or a direction orthogonal to the longitudinal axis direction of the support member insertion hole.

And in such a machine tool, the hexagon socket head screw is screwed and arranged in a female screw hole in the holder body, and is used as a pressing member that presses the support member. The supporting member is fixed to the holder body by being pressed by the screw tip of the hexagon socket head screw by screwing the hexagon socket head screw into the female screw hole.

Such a hexagon socket head screw includes a hexagon socket head screw in which a ball portion having a flat contact surface is rotatably attached to a tip portion of a screw portion main body having a hexagon socket.

For example, Japanese Utility Model Laid-Open No. 6-83232 discloses a hexagon socket head bolt as a pressing member that is screwed into a screw hole in a holder body, and a rotatable ball at the tip of the hexagon socket head bolt. A workpiece holder that can hold a workpiece at a desired height on the upper surface side of the support member by pressing the flat contact surface of the sphere, which is a part, against the inclined surface of the support member and pressing the same is disclosed. Has been.

In the hexagon socket head cap screw having the hexagon socket and the hexagon socket head cap screw described in Patent Document 1, chips may enter the hexagon socket when the metal processing of the workpiece is finished.

The chips that have entered the hexagonal hole prevent the hexagonal wrench from being smoothly fitted into the hexagonal hole, making it impossible to quickly perform tool replacement work and adjustment work after machining. For this reason, the operator is performing the operation | work which removes the chip etc. which entered the said hexagonal hole after processing by blowing compressed air or using a thin rod-shaped member.

In addition, there was a possibility that when the compressed air is blown, chips are scattered and the scattered chips enter the eyes of the operator.

The present invention has been made in view of the above circumstances, and prevents intrusion of chips and chips into the hexagonal hole, while smoothly fitting the hexagonal wrench into the hexagonal hole, and screwing workability It aims at providing the hexagon socket head screw which can improve.

In order to achieve the above object, a hexagon socket head screw according to an aspect of the present invention includes a cylindrical thread portion provided on an outer peripheral surface, a first space portion having a hexagonal first opening on one end surface, and the like. A screw portion main body having a second space portion having a second opening on an end face, and a communication hole communicating the first space portion and the second space portion; and in the first space portion. A lid that is slidably disposed and moved to the first opening side along the longitudinal direction of the threaded portion main body so as to close the first opening; and the lid portion on one end side A guard main body provided, and provided along the longitudinal direction from the other end side of the guard main body, slidably disposed in the communication hole, and an opening on the second space portion side of the communication hole at a shaft end portion 1st deformation | transformation for forming the 1st latching | locking part larger diameter than the internal diameter of the said communicating hole for latching to an edge part A guard member having a sliding shaft, and a telescopically disposed within the first space portion of the screw portion main body, the lid portion closing the first opening of the first space portion. A hex wrench tip having a biasing force to move to a position, and being contracted by moving the lid portion by a predetermined distance in a direction opposite to the biasing direction against the biasing force. And an elastic member that enables the fitting arrangement of the parts.

The perspective view which shows 1st Embodiment which concerns on this invention, and shows the whole structure of the hexagon socket head screw 1 is an exploded perspective view of the hexagon socket head screw shown in FIG. Sectional drawing of each component of the hexagon socket head screw shown in FIG. Sectional view of hexagon socket head cap screw in the state where the components shown in FIG. 3 are combined The figure explaining the method of assembling the slide axis | shaft of the guard member shown in FIG. 4 to a screw part main body. Sectional drawing of the state which assembled | attached the slide shaft of the guard member shown in FIG. 5 to the screw part main body. The figure explaining the method of assembling the ball | bowl part shown in FIG. 4 to the lower part of a screw part main body. Sectional drawing of the state which assembled | attached the spherical part shown in FIG. 7 to the lower part of a screw part main body The figure explaining the usage example of the hexagon socket head screw of this embodiment Explanatory drawing explaining the contact state of the ball | bowl part of this screw and the slope of a supporting member at the time of completion of screwing of the hexagon socket head screw shown in FIG. Explanatory drawing explaining the contact state of the ball | bowl part of this screw and the slope of a support member when the hexagon wrench is extracted from the hexagon socket of the hexagon socket screw shown in FIG. The perspective view which shows 2nd Embodiment which concerns on this invention, and shows the whole structure of the hexagon socket head screw Sectional view of the hexagon socket head screw shown in FIG. Sectional drawing which shows the 3rd Embodiment which concerns on this invention, and shows the whole structure of the hexagon socket head bolt provided with the cover part

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment according to the present invention will be described with reference to FIGS.

It should be noted that the drawings are schematic, and the relationship between the thickness and width of each part, the ratio of the thickness of each part, and the like are different from the actual ones. However, it is a matter of course that portions having different dimensional relationships and ratios are included.

The hexagon socket head screw 1 according to the first embodiment is also called, for example, an potato screw. As shown in FIGS. 1 and 2, the hexagon socket head screw 1 mainly includes a screw portion body 2, a guard member 3, an elastic member 4, and a ball portion 5.

The threaded body 2, guard member 3, elastic member 4, and ball part 5 will be described with reference to FIGS.
The screw part body 2 is made of, for example, metal and has a substantially cylindrical shape. The screw part main body 2 includes a screw part 2B provided on the outer peripheral surface, a first space part 2D, a second space part 2E, and a communication hole 2C.

The first space 2D is a hexagonal hole having a hexagonal first opening 2A on one end surface. The second space 2E is a round hole having a circular second opening 2F on the other end surface.

The first space 2D serves as both a fitting hole into which the tip 61A (see FIG. 10) of the hexagon wrench 61 is fitted and an accommodation hole in which, for example, a coil spring as the elastic member 4 is arranged. Yes. On the other hand, the second space portion 2F is an accommodation hole for rotatably accommodating the sphere portion 5.

The communication hole 2C is a through hole that connects the first space portion 2D and the second space portion 2E. A slide shaft 3C of the guard member 3 is slidably disposed in the communication hole 2C. The central axis of the communication hole 2 C is provided along the central axis O of the screw body 2. In the present embodiment, the central axis of the communication hole 2 C is coaxial with the central axis O.

First, the guard member 3 and the elastic member 4 provided in the first space 2D of the screw body 2 will be described.

The guard member 3 is made of, for example, metal, and is integrally formed by a guard body 3B having a lid 3A and a slide shaft 3C. The guard member 3 is mainly disposed in the first space 2D of the screw body 2.

The cross-sectional shape orthogonal to the longitudinal axis of the guard member 3 of the lid 3A is a hexagonal shape. On the other hand, the cross-sectional shape orthogonal to the longitudinal axis of the guard body 3B and the cross-sectional shape orthogonal to the axis of the slide shaft 3C are circular.

3 A of said cover parts are provided in the one end side (upper part of FIG. 2, FIG. 3, etc.) of the guard main body 3B, and it is formed so that the 1st opening 2A of the screw part main body 2 may be plugged up, in 1st space part 2D It is slidably disposed along the central axis O.

In addition, it is desirable that the lid 3A is configured to have a size that makes the gap with the first opening 2A as small as possible.

The slide shaft 3C is provided so as to protrude from the end face on the other end side (the lower part in FIGS. 2 and 3) of the guard body 3B. The central axis of the slide shaft 3C and the central axis of the guard body 3B are coaxial.
In addition, the thickness (diameter) of the slide shaft 3C may be a dimension that can be inserted and slid into the communication hole 2C of the threaded portion body 2, and is configured to have a size that makes the gap with the communication hole 2C as small as possible. It is desirable to do.

Further, a cylindrical first deformation portion (caulking portion) 3D provided with a recess 3D1 is provided at the shaft end portion of the slide shaft 3C. The first deforming portion 3D is deformed using a first jig 10 described later to form a first locking portion 3DX (see FIG. 6).

The first locking portion 3DX abuts on the second opening end surface 2C2 that is the opening edge portion of the communication hole 2C on the second space 2E side, and prevents the slide shaft 3C from coming out of the communication hole 2c. It is retaining.

The elastic member 4 is disposed in the first space 2D of the screw body 2. The length of the step member 4 is such that when the elastic member 4 is at a natural height, the upper surface of the lid 3A located on one end side of the elastic member 4 and the first opening 2A of the screw main body 2 are provided. The flat surface constitutes substantially the same surface, and the first opening 2A is closed by the lid portion 3A.

In this embodiment, in this arrangement state, one end side of the elastic member 4 is set in contact with the back surface of the lid portion 3A of the guard member 3, and the other end side is set in contact with the bottom surface 2D1 of the first space portion 2D. .

The elastic member 4 has a biasing force that moves the guard body 3B in a direction to close the first opening 2A of the first space 2D by the lid 3A. The elastic member 4 is contracted by pressing the lid portion 3A in the counter-biasing direction against this biasing force. Then, as the lid 3A moves, the elastic member 4 is contracted by a predetermined amount, thereby forming a fitting space in which the distal end 61A of the hexagon wrench 31 is fitted and arranged so that a fastening operation can be performed. .

The elastic member 4 is not limited to a coil spring that is deformed by being contracted by the lid 3A. The elastic member 4 can be disposed in the first space 2D of the screw body 2 and has a biasing force that biases the lid 3A toward the first opening 2A of the screw body 2. What is necessary is just to be contracted and deform | transformed with the movement of 3A, for example, although biasing force is smaller than a coil spring, Sponge or sponge rubber etc. formed in the pipe shape may be sufficient.

The outer diameter L1 of the guard body 3B of the guard member 3 is set smaller than the inner diameter L2 of the elastic member 4.

The outer diameter L1 of the guard body 3B is set so that the gap with the elastic member 4 becomes as small as possible when the guard member 3 is pushed in the direction of the bottom surface 2D1 of the first opening 2D. It is desirable to configure so that 4 does not deviate in a direction orthogonal to the central axis O.

As shown in FIGS. 2 and 3, the guard member 3 has the elastic member 4 disposed in advance in the first space 2D of the screw body 2 and then the slide shaft 3C and the guard body 3B from the first opening 2A. Is inserted into the elastic member 4 and disposed in the first space 2D (see FIG. 4).

The guard member 3 and the elastic member 4 are assembled so as not to drop off from the threaded body 2 in the following procedure.

A method for assembling the guard member 3 to the first space 2D of the screw body 2 will be described with reference to FIGS.

FIG. 5 is an explanatory view for explaining a method of assembling the slide shaft of the guard portion shown in FIG. 4 to the screw portion main body. FIG. 6 is a cross-sectional view of the state where the slide shaft of the guard portion shown in FIG. FIG.

First, as shown in FIG. 4, the worker arranges the elastic member 4, the guard member 3, and the elastic member 4 in the first space 2 D of the screw body 2. At this time, the upper surface of the lid portion 3 A placed on one end side of the elastic member 4 protrudes from the one end side plane of the screw main body portion 2 by a predetermined amount.

Next, as shown in FIG. 5, the worker places the first opening 2 A side of the screw body 2 in the state where the guard member 3 and the elastic member 4 are arranged in the first space 2 D, for example, a metal It is placed on a flat work surface 100A of a work table 100 made of steel. As a result, the upper surface of the lid 3A and the one end side plane of the screw main body 2 are disposed on the work surface 100A.

The operator prepares the first jig 10 in which the tip portion 10A is formed in a conical shape. Then, the tip portion 10A of the first jig 10 is guided into the second space 2E from the second opening 2F of the screw portion body 2, and the tip portion 10A is guided to the first deforming portion 3D of the slide shaft 3C. In the recess 3D1.

In this arrangement state, the operator drives the first jig 10 in the direction of arrow A in FIG. Then, the distal end portion 10A of the first jig 10 moves in the direction of the arrow A in the recess 3D1, and the first deformable portion 3D is deformed so as to expand in the outer peripheral direction as shown in FIG. .

As a result, the first deforming portion 3D of the slide shaft 3C is a first locking portion 3DX that is locked to the bottom surface 2C2 that is the opening edge portion on the second opening 2E side of the communication hole 2C of the screw body. It is formed.

Thus, by forming the first locking portion 3DX, the slide shaft 3C is slidably disposed without dropping from the communication hole 2C of the screw portion main body 2.

In this embodiment, the length of the slide shaft 3C protruding from the other end face of the guard body 3B is such that the locking portion 3DX is in contact with the bottom surface 2C2 of the second space portion 2E and is locked. The upper surface of the lid portion 3A and the one end side surface having the first opening 2A of the screw main body portion 2 are set to form substantially the same surface.

In the present embodiment, the first deforming portion 3D of the slide shaft 3C is deformed in a state where the upper surface of the lid portion 3A and the one end side plain of the screw portion main body 2 are arranged on the work surface 100A. The locking portion 3DX is brought into contact with the bottom surface 2C2 to obtain a locked state. Therefore, by performing this operation, the upper surface of the lid 3A and the one end side plane of the screw main body 2 can be easily made substantially flush with each other.

By finely adjusting the deformation amount of the first deformation portion 3D of the slide shaft 3C, it is possible to make the surfaces coincide with each other without variation in height between the upper surface of the lid portion 3A and the one end side plane of the screw body portion 2. it can.

Thus, the guard member 3 and the elastic member 4 can be assembled in the first space 2D of the screw body 2 as shown in FIG.

According to this configuration, the guard member 3 disposed in the first space 2D is constantly urged by the elastic member 4 in the direction of moving the lid 3A toward the first opening 2A. In this biased state, the first locking portion 3DX provided on the slide shaft 3C of the card member 3 is locked to the bottom surface 2C2 of the second space portion 2E.

As a result, the upper surface of the lid portion 3A is disposed so as to be substantially flush with the one end side surface of the screw main body portion 2 having the first opening 2A. Therefore, the first opening 2 A is closed by the lid portion 3 A of the guard member 3. The ball portion 5 is provided in the second space portion 2E opposite to the first space portion 2D of the screw portion main body 2 in which the guard member 3 and the elastic member 4 are assembled.
Next, the spherical portion 5 provided in the second space portion 2E of the screw portion main body 2 will be described.

2 and 3 is made of, for example, metal and includes a sliding portion 5A having a spherical surface, a flat contact surface 5B, and a regulating portion 5C.

The abutment surface 5B is a flat surface formed by cutting out the spherical surface of the sphere portion 5. The restricting portion 5C is a columnar convex portion protruding from the spherical surface of the spherical portion 5, and is provided on the opposite side of the contact surface 5B. The spherical surface of the sliding portion 5A is a sliding surface that is rotatably arranged with respect to the arcuate sliding surface 2E2 of the second space 2E.

The sliding portion 5A of the sphere portion 5 described above is rotatably disposed in the second space portion 2E of the screw portion main body 2. The contact surface 5B of the sphere portion 5 is disposed so as to protrude outward from the second opening 2F of the second space portion 2E.

The spherical portion 5 is rotatably disposed at a lower portion of the second space portion 2E of the screw portion main body 2, so that a flat contact surface 5B protrudes from the second opening 2F by a predetermined amount, In this configuration, the fixed surface 50x (see FIG. 9) of the support member 50 can always be brought into surface contact.

The convex peripheral edge portion 5C1 of the restricting portion 5C is in contact with an inner peripheral surface 2E1 that is an inner wall forming a second space portion 2E of the screw portion main body 2 described later, and the longitudinal axis (central axis) of the spherical portion 5 O1: Refer to FIG. 3) The rotation in the direction is restricted.

The central axis O1 of the sphere part 5 is inclined differently from the central axis O of the screw part body 2 when the sliding part 5A of the sphere part 5 rotates with respect to the sliding surface 2E2. The inclination angle of the central axis O1 of the spherical portion 5 with respect to the central axis O is set in advance when the edge portion 5C1 of the restricting portion 5C comes into contact with the inner peripheral surface 2E1 of the second space portion 2E of the screw portion main body 2. Tilt at an angle to maximize.

The second space 2E of the screw body 2 has the inner peripheral surface 2E1 and the sliding surface 2E2. The sliding surface 2E2 is an arc-shaped surface with which the sliding portion 5A of the sphere portion 5 comes into surface contact, and is provided on the second opening 2F side of the second space portion 2E. The inner peripheral surface 2E1 is an inner peripheral surface of a round hole with which the convex peripheral portion 5C1 of the restricting portion 5C of the sphere portion 5 abuts.
As shown in FIG. 3, the inner peripheral surface 2E1 of the second space 2E is formed with an inner diameter L4 having a dimension set in advance larger than the outer diameter L3 of the columnar restricting portion 5C. Then, when the central axis O1 of the sphere part 5 is inclined at a preset angle with respect to the central axis O of the screw part body 2, the convex peripheral part 5C1 of the restricting part 5C is in contact with the inner peripheral surface 2E1. It has become.

That is, by providing the restricting portion 5C, the sliding portion 5A rotates and the abutting surface 5B is not disposed in the second space 2E, so that the abutting surface 5B is always placed on the screw body. It is possible to dispose it toward the screw tip direction, which is outside the second second opening 2F.

Note that the outer diameter L3 of the restricting portion 5C (convex portion) is appropriately set according to the rotation range of the sliding portion 5A.

The ball portion 5 is assembled in the following procedure so that it does not fall out of the second space portion 2E of the screw portion main body 2.

A method of assembling the ball portion 5 in the second space 2E of the screw portion main body 2 to which the guard member 3 is assembled will be described with reference to FIGS. FIG. 7 is an explanatory view for explaining a method of assembling the ball part shown in FIG. 4 to the lower part of the screw part main body, and FIG. 8 is a cross-sectional view showing a state in which the ball part shown in FIG. is there.

First, as shown in FIG. 6, the worker arranges the sliding portion 5A of the ball portion 5 on the sliding surface 2E2 of the second space portion 2E of the screw portion main body 2 to which the guard member 3 is attached. At this time, the operator first guides the restricting portion 5C of the ball portion 5 into the second space portion 2E.

Thereafter, the worker places the first opening 2A side of the screw body 2 in the state where the ball portion 5 is disposed in the second space portion 2E, as shown in FIG. It is placed on a flat work surface 100A.

The worker prepares a second jig 20 formed like a cylindrical cap as shown in FIG. The 2nd jig | tool 20 is substantially the same diameter as the outer diameter of the thread part main body 2, and has the press part 20a of a taper shape, for example inside an opening edge part. The pressing portion 20a of the second jig 20 may be formed in an R shape.

The operator moves the second jig 20 in the direction of arrow B in FIG. 7, and the pressing portion 20 a of the second jig 20 is provided on the outer peripheral edge at the lower part of the screw body 2. The second deformed portion 2G is brought into contact.

In addition, the 2nd deformation | transformation part 2G is previously provided in the vicinity of 2nd opening 2F of the sliding face 2E2. The second deforming portion 2G is a retaining member that is deformed to come into contact with the sliding portion 5A of the ball portion 5 to prevent the ball portion 5 from falling out of the second space portion 2E. It is formed as a second locking portion 2GX.

The worker presses the jig 20 with the pressing portion 20a of the second jig 20 in contact with the second deformable portion 2G. Then, the second deforming portion 2G follows the spherical surface of the sliding portion 5A in the inner direction of the second opening 2F as shown in FIG. 8 by the pressing force from the pressing portion 20a of the second jig 20. And deform to reduce the diameter.

As a result, the sliding surface 2E2 of the screw portion main body 2 is deformed into a predetermined arc surface while providing the second locking portion 2GX. As a result, the sliding portion 5A of the ball portion 5 disposed in the second space portion 2E of the screw portion main body 2 is rotatable with respect to the arc surface and is latched and held by the second latching portion 2GX. It is prevented from dropping out from the second opening 2F.

Thus, by forming the second locking portion 2GX, the sliding portion 5A of the ball portion 5 does not fall off from the second opening 2F of the second space portion 2E of the screw portion main body 2. In the space 2E, it is rotatably arranged.

As a result, the hexagon socket head screw 1 of this embodiment shown in FIGS. 1 and 8 is configured.

The operation of the hexagon socket head screw 1 of this embodiment will be described with reference to FIGS.

FIG. 9 is an explanatory diagram for explaining an example of use of the hexagon socket head screw of the present embodiment, and FIG. 10 shows a ball portion of the screw at the completion of screwing with the hexagon wrench of the hexagon socket head screw of FIG. FIG. 11 is an explanatory diagram for explaining the contact state between the support member and the inclined surface of the support member. FIG. 11 shows the contact state between the ball portion of the screw and the support member inclined surface when the hexagon wrench is removed from the hexagon socket head screw shown in FIG. It is explanatory drawing demonstrated.

As shown in FIG. 9, the hexagon socket head screw 1 of this embodiment is used for the machine tool 30 which performs metal processing, such as a machining center, for example.
The machine tool 30 includes a holder main body 60 for fixing a tool 40 such as a cutting tool 40a, a drill 40b, and an end mill 40c. The holder body 60 is provided with a plurality of support member mounting holes 60a and a plurality of female screw holes 60b corresponding to the support member mounting holes 60a. Support members 50A to 50C for holding the tool 40 are detachably attached to the support member mounting holes 60a. The female screw holes 60b are provided in a direction orthogonal to the central axis of the support member mounting holes 60a and communicate with the support member mounting holes 60a. The hexagon socket head screw 1 of this embodiment is screwed into the female screw hole 60b.

As shown in FIG. 9, in the machine tool 30 configured as described above, tools 40 such as a cutting tool 40a, a drill 40b, and an end mill 40c are fixed to the support members 50A to 50C, respectively.

These support members 50A to 50C to which the respective tools are fixed are arranged in the support member mounting holes 60a of the holder body 60. Thereafter, the hexagon socket head screw 1 is screwed into the female screw hole 60b communicating with the support member mounting hole 60a. As a result, the support members 50A to 50C are pressed by the contact surface 5B of the ball portion 5 of the hexagon socket head screw 1 and fixed to the holder main body 60.

When the hexagon socket head screw 1 is screwed into the female screw hole 60b, as shown in FIG. 10, the operator closes the distal end surface of the distal end portion 61A of the hexagon wrench 61 with the first opening 2A of the hexagon socket 3A. Place on top. Then, the operator moves the guard member 3 in the direction of the bottom surface 2D1 of the first space 2D against the biasing force of the elastic member 4 while pressing the lid 3A with the hexagon wrench 61. Then, the first opening 2A appears, and as the guard member 3 further moves, a hexagonal hole into which the tip portion 61A of the hexagon wrench 61 is fitted gradually appears.

That is, by pressing the lid portion 3A and contracting the elastic member 4, the distal end portion 61A of the hexagon wrench 61 is fitted and arranged in the hexagonal hole of the first space portion 2D so that a fastening operation is possible.

Thereafter, the operator rotates the hexagon wrench 61 to screw the hexagon socket head screw 1 into the female screw hole 60b.

Note that the hexagon socket head screw 1 of the present embodiment has a distal end portion 61A at the time of screwing with the hexagon wrench 61, and a second locking portion provided at the shaft end portion of the slide shaft 3C as shown in FIG. 3DX is comprised so that it may not contact the end surface of 5 C of control parts of the spherical part 5, and the convex part peripheral part 5C1 provided in this control part 5C.

When the support member 50 is fixed by the hexagon socket head screw 1, the fixing surface 50x of the support member 50 is basically arranged so as to be orthogonal to the female screw hole 60b. That is, the central axis of the hexagon socket head screw 1 is arranged so as to be orthogonal to the fixed surface 50x of the support member 50, and the contact surface 5B of the ball portion 5 is in contact with the fixed surface 50x.

Temporarily, it is assumed that the support member 50 rotates in the support member mounting hole 60a and the fixing surface 50x is disposed obliquely with respect to the central axis of the hexagon socket head screw 1 as shown in FIG.

In such a case, the hexagon socket head screw 1 of the present embodiment is screwed into the female screw hole 60b with the hexagon wrench 61, so that a part of the contact surface 5B provided on the ball portion 5 is obliquely arranged. It contacts the fixed surface 50x. If the screwing is continued, the sliding portion 5A of the ball portion 5 is provided so as to be rotatable with respect to the screw portion main body 2, so that the spherical surface of the sliding portion 5A is in relation to the arc surface of the sliding surface 2E2. Will be rotated. As the sliding portion 5A is rotated, the contact surface 5B of the ball portion 5 is rotated in accordance with the inclination of the fixed surface 50x, and the entire surface of the contact surface 5B is reliably brought into contact with the fixed surface 50x. Contact.

As a result, instead of the pressing force in the arrow S direction along the longitudinal axis of the threaded portion 2 from the contact surface 5B of the hexagon socket head screw 1 to the fixed surface 50x of the support member 50, the contact surface 5B The support member 50 is fixed to the support member mounting hole 60 a of the holder main body 60 by the pressing force in the direction of the arrow S 1 perpendicular to the support member 60.

In addition, as shown by the dotted line in FIG. 10, the ball portion 5 is provided with a regulating portion 5C that can contact the inner peripheral surface 2E1 that forms the second space portion 2E above the sliding portion 5A. The contact surface 5B of the ball portion 5 is always arranged so as to face the screw tip direction on the second opening 2F side of the lower portion of the screw portion main body 2. In other words, the restricting portion 5C prevents the ball portion 5 from rotating and the contact surface 5B from being disposed in the second space portion 2E.

Further, since the hexagon socket head screw 1 has a ball portion 5 that is rotatable with respect to the screw portion main body 2, within the rotation range of the sliding portion 5A by the convex peripheral portion 5C1 of the restricting portion 5C. Then, even if the fixed surface 50x is in an inclined state, the contact surface 5B can be reliably brought into surface contact with the fixed surface 50x that is inclined.

Then, the hexagon socket head screw 1 is fastened using a hexagon wrench 61 to fix the support member 50 to the support member mounting hole 60 a of the holder body 60. After fixing, the operator pulls out the hexagon wrench 61 from the hexagon hole which is the first space portion 2D.

Then, since the guard member 3 is always urged by the elastic member 4, the guard member 3 starts to move with the removal of the hexagon wrench 61. That is, the lid portion 3A is moved toward the first opening 2A in the first space portion 2D, and the first opening 2A of the screw portion main body 2 of the hexagon socket head screw 1 as shown in FIG. The lid 3A is rearranged to close the opening 2A.

As described above, since the first opening 2A of the screw portion main body 2 is closed by the lid portion 3A, even if the workpiece is metal-worked, it is cut into the first opening 2A that is a hexagonal hole. Intrusion of powder and the like can be prevented.

Therefore, immediately after finishing the metal processing of the workpiece, the hexagonal wrench 61 can be quickly fitted through the first opening 2A which is the hexagonal hole of the hexagonal socket screw 1. As a result, tool exchange work, adjustment work, and the like can be performed smoothly.

In other words, in the present embodiment, there is no need to scrape the chips that have entered the hexagonal hole in order to fit the hexagonal wrench 61 into the hexagonal hole using a thin rod-like member, or to blow off by blowing air. .

This makes it possible to simplify the metal working process without fear of adversely affecting the worker.

Therefore, according to the first embodiment, it is possible to smoothly fit the hexagon wrench 61 into the hexagonal hole by preventing the entry of chips and the like into the first opening 2A of the hexagonal hole with a simple configuration. In this way, the hexagon socket head screw 1 that can improve the workability during the screwing operation can be realized. Moreover, the hexagon socket head screw 1 which can arrange | position the flat contact surface 5B of the ball | bowl part 5 toward a screw tip direction always with a simple structure is realizable.

(Second Embodiment)
12 and 13 show a second embodiment according to the present invention, FIG. 12 is a perspective view showing the overall configuration of the hexagon socket head screw according to the second embodiment, and FIG. 13 shows the hexagon of FIG. It is sectional drawing of a screw with a hole. In FIG. 12 and FIG. 13, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions are described.

The hexagon socket head screw 1 A of the second embodiment is configured without the ball portion 5. Other configurations are substantially the same as the hexagon socket head screw 1 of the first embodiment.
That is, as shown in FIGS. 12 and 13, the hexagon socket head screw 1 A does not need to accommodate the ball portion 5 in the second space portion 2 E. It can be configured shorter than the first embodiment, and the inner diameter of the second space 2E can be configured smaller than the inner diameter L4.

Therefore, the second space 2E of the screw body 2 is smaller than that of the first embodiment. Thereby, the strength in the longitudinal direction of the threaded portion main body 2 can be increased.

Further, since the hexagon socket head screw 1A does not need to accommodate the ball portion 5 in the second space portion 2E, the shape of the second opening 2F is not a circular shape, but an elliptical shape, a polygonal shape, or the like. It may be a shape other than a circle.

Note that the hexagon socket screw 1A of the present embodiment is configured such that the second locking portion 3DX does not protrude from the second opening 2F when the hexagon wrench 61 is screwed. Moreover, the length of the longitudinal direction of the said thread part main body 2 is suitably changed and comprised as needed.
As described above, the other configurations and operations of the hexagon socket head screw 1A excluding the ball portion 5 are the same as those of the hexagon socket head screw 1 of the first embodiment.

Therefore, according to the second embodiment, even if the configuration without the spherical portion 5 is used, the chips to the first opening 2A of the hexagonal hole are as simple as the first embodiment, and the like. The hexagon socket head screw 1A that can prevent the intrusion of the screw and smoothly fit the hexagon wrench 61 into the hexagon socket can be realized.

(Third embodiment)
FIGS. 14A and 14B are cross-sectional views showing the overall configuration of the hexagon socket head cap screw according to the third embodiment of the present invention. In FIG. 14, the same components as those in the first and second embodiments are denoted by the same reference numerals, description thereof is omitted, and only different portions are described.

Although the hexagon socket head screw 1 of the first embodiment and the hexagon socket head screw 1A of the second embodiment are configured as potato screws, the hexagon socket head screw of this embodiment is a hexagon socket head cap screw 1B having a hexagon socket. 1C.
Specifically, the hexagon socket head cap screw 1B shown in FIG. 14A is configured in substantially the same manner as the hexagon socket head screw 1 shown in FIG. 2, and the hexagon socket head cap screw 1C shown in FIG. 12 is configured in substantially the same manner as the hexagon socket head screw 1A shown in FIG. 12, and the configuration of the screw portion main body 70 is different from the hexagon

socket head screw

1, 1A.

The screw body 70 is provided with a head 70X and a threaded portion 70Y. The head portion 70X has a first opening 70A and a first space portion 70D that are hexagonal holes. The screwing portion 70Y has a smaller diameter than the head portion 70X, has a second opening 70F and a second space portion 70E, and is provided with a screw portion 70B on the outer periphery.

As in the first embodiment, the screw body 70 is provided with a communication hole 70C. The head 70X is configured in a cylindrical shape or a hexagonal prism shape. Further, a first locking portion 3DX is provided at the shaft tip of the slide shaft 70C of the guard member. And about the hexagon socket head cap screw 1B, the 2nd latching | locking part 70GX is provided in the 2nd opening 70F of the thread part main body 70. As shown in FIG.
Other configurations and operations are the same as those of the hexagon socket head screw 1 of the first embodiment and the hexagon socket head screw 1A of the second embodiment described above.

According to the third embodiment, even when the hexagon

socket head screw

1, 1A is configured as the hexagon socket

head cap screw

1B, 1C, the same effect as the hexagon

socket head screw

1, 1A can be obtained.

The present invention is not limited to the above-described embodiments and modifications, and various changes and modifications can be made without departing from the scope of the present invention.

This application is filed on the basis of the priority claim of Japanese Patent Application No. 2013-037605 filed in Japan on February 27, 2013, and the above disclosure is disclosed in the present specification, claims, It shall be cited in the drawing.

Claims

A cylindrical thread portion provided on the outer peripheral surface, a first space portion having a hexagonal first opening on one end surface, a second space portion having a second opening on the other end surface, and the first A threaded portion main body having a communication hole that communicates the space portion and the second space portion;
A lid that is slidably disposed in the first space, moved to the first opening side along the longitudinal direction of the screw body, and disposed so as to close the first opening; A guard main body provided with the lid on one end side, provided along the longitudinal direction from the other end side of the guard main body, slidably disposed in the communication hole, and at the shaft end portion of the communication hole. And a slide shaft provided with a first deforming portion for forming a first locking portion having a diameter larger than the inner diameter of the communication hole for locking to the opening edge portion of the two space portions. Members,
The biasing force is disposed in the first space portion of the screw portion main body so as to be extendable and contractable, and has a biasing force for moving the lid portion to a position for closing the first opening of the first space portion. An elastic member that is contracted by moving the lid portion by a predetermined distance in a direction opposite to the urging direction to enable the fitting arrangement of the hex wrench tip in the first space portion;
A hexagon socket head screw characterized by comprising:
The cross-sectional shape orthogonal to the longitudinal axis of the guard member of the lid portion is a hexagonal shape, and the cross-sectional shape orthogonal to the longitudinal axis of the guard body and the slide shaft is a circular shape,
The hexagon socket head screw according to claim 1, wherein the elastic member has a through hole along the longitudinal direction in which the guard body can be slidably disposed.
The elastic member is always housed in the first space portion in an elastically deformed state, with one end abutting against the back surface of the lid portion of the card member and the other end contacting the bottom surface of the first space portion. The hexagon socket head cap screw according to claim 2, wherein the hexagon socket head cap screw is arranged in contact with each other.
The second space portion of the screw body has a circular second opening, and the second space portion has a spherical shape and is rotatably disposed in the second space portion. A sphere having a sliding surface having a spherical surface and a flat contact surface is rotatable, and the contact surface of the sphere is outside the second opening of the second space portion. The hexagon socket head cap screw according to claim 1, wherein the hexagon socket head screw is attached so as to protrude from the base.
A second lock having a diameter smaller than the diameter of the spherical portion for locking to a spherical surface reaching the contact surface protruding outward from the second opening in the vicinity of the second opening of the second space. The hexagon socket head screw according to claim 4, wherein a second deforming portion for forming the portion is provided.
The hexagon socket head cap screw according to claim 4, wherein the ball portion has a restricting portion on a spherical surface of the sliding portion on the opposite side of the contact surface.
The restricting portion is a columnar convex portion,
The second space portion has an arcuate sliding surface on which the sliding portion of the ball portion comes into surface contact, and an inner peripheral surface on which an edge portion of the restricting portion comes into contact. Item 6. A hexagon socket head cap screw according to item 6.
The inner diameter of the inner peripheral surface of the second space portion is formed to be larger in dimension than the outer diameter of the convex portion of the restricting portion, and the central axis of the ball portion is the center of the screw portion main body. The hexagon socket head cap screw according to claim 7, wherein an edge portion of the restricting portion comes into contact with the shaft when inclined at a preset angle with respect to the shaft.
The screw body has a head having the first opening and the first space, a diameter smaller than the head, the second opening and the second space, and an outer periphery. 2. The hexagon socket head cap screw according to claim 1, wherein the hexagon socket head cap screw is configured to include a threaded portion provided with a thread portion.
The screw body has a head having the first opening and the first space, a diameter smaller than the head, the second opening and the second space, and an outer periphery. The hexagon socket head cap screw according to claim 4, wherein the screw is a hexagon socket head cap screw having a threaded portion provided with a thread portion.