JP2001347470A - Roller pulling-out jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller pulling-out jig capable of easily pulling out a roller member even in a small space. SOLUTION: This roller pulling-out jig is composed of an operating body 2 having a grip part 4 approximately perpendicular to a screw shaft 5, and a frame body 3 having a threaded hole 3A to be engaged with the screw shaft 5 at a center of its upper face, and having a pair of locking claw parts 3B and 3C on its lower end, a lower tip of the screw shaft 5 is brought into contact with a mounting shaft of a roller to be taken out, a pair of locking claw parts 3B and 3C are inserted into a lower face of the roller, and then the grip part 4 is rotated to move the frame body 3 to the grip part 4 side to pull out the roller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller extracting jig suitable for extracting a roller installed in a small space.

[0002]

2. Description of the Related Art Conventionally, a roller pulling jig for pulling out a roller installed in a narrow space uses a gear puller because a gap between the roller and a main body on which a shaft for mounting the roller is small is small. The roller cannot be removed from the mounting shaft using a flathead screwdriver.

[0003]

However, since the conventional roller extracting jig uses a flathead screwdriver to extract the roller installed in a narrow space, the lock is moved along the mounting shaft by the flathead screwdriver. It takes time and effort to perform the operation, and the operation time is prolonged, and there is a risk that the mounting shaft may be bent if the force is incorrectly adjusted.

An object of the present invention is to provide a roller extracting jig which can easily extract a roller even when the roller is installed in a narrow space.

[0005]

In order to achieve the above object, the present invention provides a roller removing jig for removing a roller from a mounting shaft thereof, wherein the jig is substantially perpendicular to a screw shaft whose lower end abuts on the mounting shaft. An operating body with a grip,
It is characterized in that the screw shaft is screwed with a screw hole at the center of the upper surface, and a frame provided with a pair of locking claws at the lower end at the lower end of the roller.

[0006] The roller removing jig of the present invention inserts a locking claw portion provided on a frame body into a lower surface of a roller to be removed, and screws into a screw hole provided at the center of the upper surface of the frame body. Since the lower end of the shaft is configured to contact the mounting shaft of the roller to be removed, the locking claw can be easily inserted into the lower part of the roller even if it is installed in a narrow space. By rotating the shaft, the roller to be extracted can be extracted in the axial direction,
The roller can be easily removed in a short time without bending the mounting shaft of the roller to be removed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a roller extracting jig according to an embodiment of the present invention.

A roller removing jig 1 includes a substantially T-shaped operating body 2 made of steel and a substantially inverted U-shaped frame 3 made of steel.
It is composed of FIG. 4 is a front view of the operation body 2.
As shown in the figure, the outer diameter of the rod is 8 mm and the width of the frame 3 is 58 mm.
And a screw shaft 5 having an outer diameter of 8 mm and a length of 70 mm welded so as to be orthogonal to a substantially central portion of the grip portion 4 and having a length of 80 mm in the same direction. Has a threaded portion leaving 10 mm on the grip portion 4 side.

The front view and side view of the frame 3 are shown in FIG.
As shown in FIG. 3, a pair of locking claws 3 having a screw hole 3 </ b> A screwed with the screw shaft 4 in the center of the upper surface thereof and protruding from the lower end of the frame body 3 in directions facing each other.
B and 3C, respectively, and the locking claws 3B and 3C have a thickness of about 2 mm. The height of this frame 3 is 55 mm
When the screw shaft 4 of the operating body 2 is screwed into the screw hole 3A to the end, the tip of the screw shaft 4 is locked by the locking claws 3B, 3C of the frame 3.
More protruding.

Next, a description will be given of an extracting operation using the roller extracting jig described above.

First, the screw shaft 4 shown in FIG. 4 is screwed into a screw hole 3A formed in the center of the upper surface of the frame 3 shown in FIG. 2, and the lower end of the screw shaft 4 has a locking claw 3B, It should be located above 3C. This is a state in which the screw shaft 4 is located at an upper portion from the state shown in FIG.

Thereafter, a pair of locking claws 3B, 3 of the frame 3 are formed.
As shown in FIG. 5 which is a perspective view, the roller 6 is inserted between the lower end of the screw shaft 4 and the lower end of the screw shaft 4. So that it contacts the mounting shaft 7 of the section. At this time, the roller 6
The lower end of the screw shaft 4 and the pair of locking claws 3B and 3C are sandwiched. From this state, as shown in FIG. 5, the operator further rotates the grip 4 of the operating body 2 with the other hand 10 while holding the frame 3 with one hand 9, and the frame 3 Side, and the roller 6 easily comes out of the mounting shaft 7.

At this time, since the roller 6 moves linearly along the axial direction of the mounting shaft 7, the mounting shaft 7 is not bent. Further, according to experiments, the time required for the roller 6 to come off from the mounting shaft 7 can be reduced to about 70% of that of the conventional roller in the case of the roller over the door opening force holding device. Further, since the locking claw portions 3B and 3C are formed in a thin plate shape, the locking claw portions 3B and 3C can be easily inserted into a narrow gap between the roller 8 and the main body 8 to which the roller 6 is attached. And workability is good.

[0015]

As described above, the roller removing jig according to the present invention is provided with a thin plate-shaped locking claw inserted into the lower surface of the roller to be removed at the lower portion of the frame, and the center of the upper surface of the frame is provided. A screw shaft is screwed into the screw hole formed in the above, and the lower end of the screw shaft is brought into contact with the mounting shaft of the roller to be extracted, and then the screw shaft is rotated to remove the roller. Even if the space between the mounting parts is narrow, the locking claw part can be easily inserted and the roller can be pulled out in the axial direction, without bending the mounting shaft of the roller to be pulled out, and shortening the roller. It can be easily extracted in time.

[Brief description of the drawings]

FIG. 1 is a front view of a roller extracting jig according to an embodiment of the present invention.

FIG. 2 is a front view showing a frame of the roller extracting jig shown in FIG. 1;

FIG. 3 is a side view of the frame shown in FIG. 2;

FIG. 4 is a front view showing an operating body of the roller extracting jig shown in FIG.

FIG. 5 is a perspective view showing a use state of the roller removing jig shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller removal jig 2 Operation body 3 Frame body 3A Screw hole 3B, 3C Locking claw part 4 Grip part 5 Screw shaft 6 Roller 7 Mounting shaft 8 Main body

Claims (2)

[Claims] 1. A roller extracting jig for extracting a roller from its mounting shaft, comprising: an operating body provided with a gripper substantially orthogonal to a screw shaft for bringing the lower end of the roller into contact with the mounting shaft; And a frame having a pair of locking claws at the lower end thereof, which are inserted into the lower portion of the roller, at the lower end thereof. 2. The device according to claim 1, wherein the frame is formed in a substantially inverted U-shape, and a pair of locking claws provided at a lower end thereof are provided so as to project in directions facing each other. A roller removing jig characterized by the above-mentioned.