JPH09193043A - Pulling-out device of fitting-inserting body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pulling-out device of a fitting-inserting body by which a burden to an operator can be reduced and work can be quickly performed. SOLUTION: A flexible power shaft 3 to transmit its rotation is connected to a motor-driven driver, and a cylinder body 4 is connected to the tip of this power shaft 3, and a screw body 5 screw-fitted so as to be vertically movable by a screw part 5a screw-fitted to a carved screw part 4a through a lock means 12, is arranged in this cylinder body 4, and a screw 6 is installed on the tip of this screw body 5, and a support body 7 is arranged in a tip part of the cylinder body 4 so as to be freely rotatable through a bearing 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for extracting a fitting body embedded in a mounting member.

[0002]

2. Description of the Related Art Generally, it is used in various fields as a fitting body embedded in a mounting member. For example, a fitting body such as a soundproof cushioning member fitted to an outer peripheral wall of a terminal gear of an escalator is used. Are known. In the terminal gear that drives the step chain of this escalator, holes are formed for each tooth bottom of the gear, and sound absorbing cushioning members are inserted into these holes, and a polymeric material such as urethane rubber is used as the cushioning member. Since it is used, it must be replaced regularly to prevent deterioration of the soundproofing function due to deterioration over time. Conventionally, when exchanging a cushioning member, a wood screw is screwed into the cushioning member from the side of the terminal gear while turning the terminal gear little by little while the step chain is hanging, and then the wood screw is used with a tool such as pliers. I pulled it out and took out the cushioning member.

[0003]

However, four terminal gears of the escalator are provided in the vertical and horizontal directions for each escalator, and the cushioning material is inserted into each tooth bottom of each terminal gear, so that the escalator 1 is provided. The number of cushioning materials per unit exceeds 150,
As in the past, it takes a long time to pull out the fitting body that is pulled out using a tool such as pliers and a wood screw.

It is an object of the present invention to provide a fitting / pulling-out device for lightening the burden on the operator and enabling quick work.

[0005]

In order to achieve the above object, the present invention inserts a screw into a fitting body embedded in a mounting member and pulls out the fitting body through the screw. In a body withdrawal device, a flexible power shaft for transmitting rotation of an electric driver, a cylinder body rotatably connected to a tip end portion of the power shaft, and a vertically movable screw member attached to the cylinder body. It is characterized in that it has a screw body and a lock means for releasably preventing the vertical movement of the screw body to be connected to the cylindrical body, and that the screw is provided at the tip of the screw body.

As described above, in the device for pulling out the insertion member of the present invention, the screw attached to the tip of the screw member in the state of being blocked by the locking means is pressed against the insertion member, and the screwdriver is operated to insert the screw. When screwed into the body and then the electric screwdriver is operated again with the locking means released, the screw body rises in the cylinder body, and the fitting insert screwed to the screw can be pulled out from the mounting member, Since it is no longer necessary to manually screw a screw into the insert and pull out the wood screw with a tool such as pliers as in the past, the burden on the operator can be reduced and the work can be performed quickly. become.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a front view showing a state of use of the device for pulling out a fitting body according to an embodiment of the present invention, which is a portable power shaft having a flexible rotating shaft of a rechargeable electric screwdriver 2. 3 is connected, the cylinder 4 and the screw body 5 are connected to the tip of the power shaft 3, and the screw 6 is connected to the tip of the screw body 5 to form the withdrawal device 1 for the insert body. It is used to pull out the fitting insert 11 fitted into the mounting member 9.

FIG. 1 is an enlarged cross-sectional view showing the main part of FIG. 3, in which the inner surface of a cylindrical body 4 connected through a chucking mechanism 3a attached to the tip of a grip portion 3b of a power shaft 3 is connected. A screw portion 4a is engraved on the. On the other hand, a screw portion 5a is engraved on the outer periphery of the screw body 5, and the screw portion 5a is screwed into the screw portion 4a of the tubular body 4, and the screw body 5 is rotated by the rotation of the tubular body 4. It is designed to move up and down. A screw 6 such as a wood screw is detachably provided at the tip of the screw body 5. A support 7 which is rotatably formed through a bearing 8 is attached to the tip of the cylindrical body 4, and the support 7 is provided so as to surround the outer peripheral portion of the screw 6. Further, the cylinder 4 has a hole penetrating in the radial direction, and the lock means 12 is configured to move or move the movable member in the hole so as to enable or prevent the screw body 5 from moving upward. This locking means 1
2, when the screw body 5 is locked on the upper surface of the screw body 5 as shown in FIG. 1, the cylinder body 4 and the screw body 5 are rotated together, and the rotation of the cylinder body 4 causes the screw body 5 to rotate. If the lock member 12 is unlocked without locking the upper surface of the screw body 5 as shown in FIG. 2, the screw body 5 rotates when the cylinder body 4 is rotated. The body 4 is moved in the direction of rising. Such a locking means 12 can be adopted without being limited to the illustrated configuration. Normally, the rotation of the electric driver 2 can be continuously adjusted in the range of 0 to 30 times / minute, and the length of the power shaft 3 is about 500 mm. Further, when the mounting member 9 is a terminal gear of an escalator, a plurality of fitting inserts 11 as cushioning members are press-fitted into the holes 10 of the tooth bottom 9a.
Is made of a polymer material such as urethane rubber, is formed in a cylindrical shape, and has a hollow portion 11a.

When the fitting body 11 is to be pulled out, the lock means 12 is locked as shown in FIG. 1 to prevent the screw body 5 from rising, and then the grip portion 3b of the power shaft 3 is held and screwed. The tip of 6 is pressed against the center of the insert body 11. After that, when the electric screwdriver 2 is operated to rotate the tubular body 4, the screw body 5, and the screw 6 together in the same direction, the lower end portion of the support body 7 comes into contact with the mounting member 9, and the screw 6 is fitted and inserted. It is screwed into the inside of the body 11, and the rotation of the electric screwdriver 2 is stopped there.

Next, as shown in FIG. 2, the lock means 12 is unlocked to allow the screw body 5 to rise along the inside of the cylindrical body 4, and then the lower end portion of the support body 7 is attached to the mounting member 9. The electric screwdriver 2 is actuated again in the state of being in contact. Then, the cylinder body 4 rotates, and the screw body 5 ascends in the cylinder body 4 under the driving force of the screw. Therefore, the fitting insert 11 screwed onto the screw 6 is pulled out from the hole 10 of the mounting member 9. At this time, the support 7
Although the lower end portion of the cylinder is in contact with the mounting member 9, the rotation of the cylindrical body 4 is not affected because the bearing 8 is provided.
As understood from this description, the length of the support 7 and the length of the screw portion 4a in the tubular body 4 are selected so that the fitting body 11 can be pulled out from the hole 10.

According to the pull-out device 1 for such a fitting body, since the flexible power shaft 3 is used, even when the mounting member 9 is a narrow gear work as in the case of a terminal gear, Utilizing the flexibility, the screw 6 can be easily inserted into the fitting body 11, and the pulling-out operation can be performed by operating the electric screwdriver 2 at a remote position. Moreover, since the fitting insert 11 can be easily pulled out from the hole 10 of the terminal gear 9 only by operating the electric screwdriver 2 and the locking means 12, the screw 6 can be screwed into the fitting insert 11 as in the conventional case. Since it is not necessary to pull out the wood screw with a tool such as pliers, the burden on the worker can be reduced and the work can be performed quickly. In this way, the time for exchanging the fitting body 11 can be shortened, and thus the downtime of the escalator can also be shortened.

[0012]

As described above, the device for pulling out the insertion member according to the present invention is provided with the cylindrical body at the tip of the power shaft and the screw body that can be moved up and down with respect to the cylindrical body through the locking means. Since the screw is attached to the tip of this screw body, the electric screwdriver can be operated in the locked state by the locking means to be screwed into the insertion body, and the electric screwdriver can be operated in the unlocked state by the locking means. Then, the screw body is raised in the cylinder, and the fitting insert screwed to the screw can be pulled out, and the wood screw can be screwed into the fitting insert as before, or the wood screw can be pulled out with a tool such as pliers. The burden on the worker can be reduced without the need for labor, and the work can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a main part of a device for extracting a fitting body according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing another usage state of the device for pulling out the fitting body shown in FIG.

FIG. 3 is a front view showing the whole of the device for pulling out the fitting body shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Extraction device 2 Electric screwdriver 3 Power shaft 4 Cylindrical body 5 Screw body 6 Screw 8 Bearing 9 Mounting member 11 Fitting body 12 Locking means

Claims (2)

[Claims] 1. A flexible device for transmitting rotation of an electric screwdriver in a device for pulling out a fitting insert body, in which a screw is screwed into a fitting insert body embedded in a mounting member and the fitting insert body is pulled out through the screw. Power shaft, a cylindrical body rotatably connected to the tip of this power shaft, a screw body screwed vertically into this cylindrical body, and the vertical movement of the screw body can be released. And a lock means connected to the cylindrical body, and the screw is provided at the tip of the screw body. 2. The support body according to claim 1, which is rotatably attached to the tubular body through a bearing at the front end portion of the tubular body, and has the front end abutting against the mounting member. A device for pulling out a fitting body, characterized by being provided.