JP2000334632A - Fixture - Google Patents

Abstract

(57) [Problem] To provide a tool for efficiently fixing a hollow platen having a long hole and a T-groove to a platen having a front surface in one direction. A cylindrical part having a diameter larger than the width of a slot to be inserted provided with a screw on the outer periphery, a cylindrical part having a diameter smaller than the width of the slot to be inserted provided at one end face thereof, and further having a width provided at the tip thereof. A one-way mounting type fixing device for a long hole, comprising a main body comprising a projection smaller than the width of the long hole to be inserted and having a length larger than the width of the long hole to be inserted, and a nut fitted to a screw on the outer periphery of the main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to easily and efficiently fixing a road tool on a surface provided with a long hole and a T groove.

[0002]

2. Description of the Related Art A method of fixing a hollow platen having a long hole to the outer surface thereof is as follows.
Tighten with a nut, and on the front side as well as on the back side, tighten and fix the flat washer and nut. Thus, even if the stat bolt is simply fixed to the long hole, a plurality of tools are required, and there is a disadvantage that the work efficiency is reduced.
Furthermore, when trying to fix the stat bolt in the long hole of the large surface plate, the flat washer and nut on the back side cannot be tightened by hand, so it cannot be fixed without another person. There is also. Further, if the nut is loosened, there is a disadvantage that each tool falls.

[0003] A T-slot nut is commercially available as a fixture utilizing a T-slot. However, since the T-slot nut has a structure to be inserted from the side opening of the T-slot, if the T-slot nut is required in an arbitrary part during the setup, the T-slot is opened again. T-slot nut must be inserted from the T-slot. If any other tool interferes with the T-slot opening from the side opening to any position, it is necessary to remove the interfering object. It has the disadvantage of significantly reducing efficiency. For this reason, a rotating T-slot nut that can be inserted from the front of the T-slot is commercially available. This can be done without inserting from the side opening of the T groove.
The structure is such that it can be inserted from the front of the T groove. However, when fixing both the T-slot nut and the rotating T-slot nut in the T-slot, it is necessary to screw in a bolt, insert a flat washer, and tighten the nut. is there. In addition, there is a disadvantage that a nut tightening tool for fixing is limited.

[0004] Further, when fixing a component having a male screw to a surface plate having a female screw, there is a disadvantage that the position of the female screw cannot be adjusted to an arbitrary position because the position of the female screw is predetermined.

[0005]

As described above, when fixing to a surface plate having a long hole, the front side of the bolt inserted into the long hole,
The back side is fixed using a plurality of tools, such as flat washers and nuts, which reduces the fixing efficiency. Further, the flat washer and the nut on the back side are hard to rotate by hand, and the large one has to be tightened by another person from the back side, so that the fixing efficiency is extremely low.

Further, when a T-slot nut and a rotating T-slot nut are fixed in a T-slot, a plurality of tools such as bolts, flat washers, and nuts are required, which significantly lowers the fixing efficiency.

In addition, there is a problem that tools for tightening nuts are limited, and it is not possible to select a fastener for each application.

An object of the present invention is to make it easy to fix an elongated bolt when fixing it.

[0009]

The object of the present invention is to provide a bolt comprising a T-shaped head at one end, a threaded portion at the other end, and an intermediate portion provided between the two and extending in the radial direction of the bolt. This can be achieved by configuring the fixing tool from a nut fastened to the screw portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. This embodiment is a means for fixing a workpiece X placed on a gantry 10. The tip of a holding plate 13 provided horizontally at the upper end of the jack 12 is placed on the upper end of the workpiece X, and the middle of the holding plate 13 is fixed to the gantry 10 by fixing means.

The fixing means comprises a bolt 21 having a T-shaped head, a nut 22, a bolt 23 provided with screws at both ends, and a nut 24. When the bolt 21 is viewed from the radial direction,
The head is T-shaped. The gantry 10 has an elongated hole 11 into which the head of the bolt 21 is inserted. The T-shaped length of the head of the bolt 21 is a long hole 11
Greater than the width of.

The procedure for fixing the workpiece X will be described. The head of the T-shaped bolt 21 is inserted from above the gantry 10 and rotated, and then the nut 22 is screwed and fixed. The bolt 23 is screwed into the upper part of the nut 22. The jack 12 is installed, the bolt 23 is passed through the holding plate 13, and the nut 24 is tightened.

The T-shaped bolt 21 and the nut 22 constitute a fixture.

The structure of the T-shaped bolt will be described. This is T
This is for facilitating the fixing of the bolt 21 to the gantry 10 (fixed object). The portion (intermediate portion) 21c between the T-shaped head 21b and the screw portion 21d corresponds to the thickness of the fixed object 10 (the elongated hole 11), and here, when viewed from the axial direction, has a rectangular shape. is there. The length of the square 21 c is longer than the width of the elongated hole 11. The thickness of the rectangular portion 21c is smaller than the thickness of the fixed object 10.

Here, since the head of the bolt 21 is inserted into the elongated hole 11 and slightly rotated to insert the square 21c into the elongated hole 11, the shape of the square 21c is a rhombus.

When the square portion 21c is inserted into the elongated hole 11 by rotating the bolt, the side surface of the square portion 21c is
1 can be contacted. For this reason, when fixing the bolt with the nut 22, the rotation of the bolt can be easily prevented, and the fixing can be facilitated.

In the embodiment shown in FIGS. 7 and 8, a suspension ring 41 is provided on the threaded portion 21d side of the T-shaped bolt 21. The suspension ring 41 extends along the longitudinal direction of the head 21b of the bolt 21. The fixed object is lifted by hooking the suspension ring 41.

The embodiment shown in FIG. 9 is an example in which a bolt 23 is integrally provided on a nut 22.

In the embodiment shown in FIG. 10, a shaft 42 is integrally provided on an upper portion of the nut 22, and a female screw is provided on an upper end of the shaft. A bolt 43 is fixed to the female screw. The upper end of the bolt 43 can rotate the bolt and mount a member. 44 is a nut. The bolt 43 is a jack.

The embodiment shown in FIG.
1d is provided with a female screw 21f. This female screw 2
The suspension ring 41 can be fixed to 1f with a screw.

[0021]

According to the present invention, fixing to a long hole can be facilitated.

[Brief description of the drawings]

FIG. 1 is a front view of a state in which a workpiece according to an embodiment of the present invention is fixed.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of the fixture of FIG. 1;

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a front view showing a state where the fixing tool of FIG. 3 is fixed to a fixing object.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a front view of a fixture according to another embodiment of the present invention.

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a front view of a fixture according to another embodiment of the present invention.

FIG. 10 is a front view of a fixture according to another embodiment of the present invention.

FIG. 11 is a front view of a fixture according to another embodiment of the present invention.

[Explanation of symbols]

21: bolt, 21b: head, 21c: square part, 21
d: screw portion, 21f: female screw, 22: nut, 23: bolt, 24: nut, 41: suspension ring.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigemi Yamada 794, Higashi Toyoi, Kazamatsu, Kudamatsu City, Yamaguchi Prefecture Inside the Kasado Plant, Hitachi, Ltd. (72) Junichi Kanemoto 794, Higashi Toyoi, Kudamatsu, Yamaguchi Prefecture Hitachi, Ltd., Kasado Plant (72) Inventor, Tsuyoshi Mizusaki, 794, Higashi-Toyoi, Kazamatsu, Yamaguchi Prefecture, Ltd.Kitaka Kurioka, 794, Higashi-Toyoi, Katsumatsu, Kudamatsu, Yamaguchi, Japan F term in Kasado Plant of Hitachi, Ltd. (reference) 3C016 CB02 3J001 AA02 CA01 DB04 EA02

Claims (7)

[Claims] 1. A bolt comprising a T-shaped head at one end, a screw portion at the other end, and an intermediate portion provided between the two and extending in the radial direction of the bolt, and a nut fastened to the screw portion. A fixture consisting of,. 2. The fixing device according to claim 1, wherein a longitudinal direction of the intermediate portion and a longitudinal direction of the head are the same. 3. The fixing tool according to claim 1, wherein a length of the nut is longer than a length of the threaded portion of the bolt and a length that can be used to fasten another bolt. 4. The fixing device according to claim 1, wherein a suspension ring is provided on the other end side. 5. The fixing device according to claim 1, wherein a length of the bolt is longer than a length of the nut, and a second screw portion is provided at an end. 6. The fixing tool according to claim 1, wherein a female screw is provided at an end of the shaft of the nut. 7. The fixing tool according to claim 1, wherein the screw portion has a female screw.