JPS596992Y2 - Electric hand polishing machine mainly for swords - Google Patents

Description

[Detailed explanation of the invention] Swords are polished by hand by a sharpener using a whetstone, but polishing the blade pattern in particular requires a high level of skill and skill. It can even take several weeks to polish a sword, and the polishing process is physically and physically demanding for the sharpener.
It's a mentally demanding job.

In view of these circumstances, the present invention has made it possible to provide an electric hand polisher that allows polishers to polish with less effort.

The present invention will be explained in detail below with reference to embodiment figures.

In the figure, reference numeral 1 indicates a small rod-shaped hand motor used for dental equipment, etc., and reference numeral 2 indicates a polishing machine according to the present invention attached to the motor.

The motor 1 has a bush 4 protruding from the front end of the side from which the drive shaft 3 protrudes, and is concentric with the drive shaft 3. The base of the bush has an enlarged screw 6 carved on the outer periphery. A radial flange 5 is formed, and a plurality of pins 7 are protruded from the front surface of the flange 5.

A fastening ring 9 for connection to a motor is rotatably fitted to the rear end of a cylindrical casing 8, which is the main body of the polishing machine 2.

The fastening ring 9 has a female thread 10 cut inside the part protruding from the rear end of the casing 8, and is attached to the motor by screwing this into the male thread of the enlarged diameter collar 5 of the motor 1. The casing can be attached, and 11 is a snap ring for a stopper of the fastening ring, and 12 is a retaining collar formed on the rear outside of the casing.

Inside the cylindrical casing 8, there is a protruding shaft 15 at an eccentric portion of the front end surface.
The rotating shaft 14 has radial bearings 13, 13.
A cylindrical connector 16 provided at the rear end is spline-fitted to the rotary shaft 3 of the motor 1, and in the figure, 17 is a stop pin, 18 is a spring, and 7a indicates the groove in which the pin 7 of the motor engages.

A base of a swinging lever 19 whose front end projects from the tip of the casing is inserted into the front end of the casing, and approximately the center of the base of this lever is connected to a support shaft 20 provided in the casing in one diameter direction. It is rotatably attached to the

A driven body 22 is provided at the rear end of this lever 19 and has a long hole 21 in the rear end in a direction perpendicular to the swinging direction of the lever 19. The installed radial bearing 23 is fitted.

Therefore, when the motor is driven, the lever 19 is rotated forward and backward about the support shaft 20 by the eccentric protruding shaft 15 of the rotating shaft 14 and the driven member 22 of the lever.

At the front end of the lever 19, the base of a pad rod 25 made of bamboo or the like having a hygroscopic pad 24 such as a sponge at the free end for adhering the abrasive material is removably attached by an appropriate attachment 26.

The insertion portion 27 of the lever 19 inside the casing is designed to have a thickness slightly larger than that of the lever so that the lever does not wobble during swinging.

In addition, in the figure, 28 is an abrasive material, 29 is a sword, 30 is a control panel, 3
1 is a power outlet, 32 is a power switch, 33 is a knob for adjusting the rotation speed of the motor, and 34 is a motor plug.

The polishing machine of the present invention has the above-described structure, and by fitting the rear end of the casing to the front end pusher 4 of the hand motor 1, the connector 16 of the rotating shaft 14 is spline-fitted to the rotating shaft 3 of the motor. Then, by turning the fastening ring 9, the fastening ring 9 is screwed onto the bushing collar 5 of the motor, and the fastening ring 9 is attached to the motor for use.

The rotating shaft 14 is rotated by the rotation of the motor, the eccentric protruding shaft 15 is rotated eccentrically, the lever 19 is swung forward and backward around the support shaft 20, and the pad rod 25 is reciprocated in the direction of the arrow in the figure. I am made to do so.

Therefore, by attaching the abrasive material 28 to the pad 24 of the bat rod 25 and lightly pressing it against the part of the sword 29 to be polished, the sword can be polished with the abrasive material moving slightly back and forth.

At this time, if the lever 19 is reciprocated in its axial direction, the polisher must be used parallel to the direction of the sword's blade, making polishing not only difficult but also dangerous.

However, in the present invention, the lever can be rotated forward and backward around the support shaft 20, so that the casing can be gripped in a direction perpendicular to the direction of the blade relative to the sword, and the abrasive material can be held along the edge of the blade. By reciprocating the blade, the blade can be polished in the same way as a sharpener, and safely.

In addition, the cross-sectional shape of the sword has a slight bulge on both sides,
Therefore, if the butt rod 25 is made of a rigid material, you will have to move your hand along the bulge, and in practice it is impossible to polish along the bulge. Because it is made of solid wood, you can easily and properly polish the sword by simply pressing it with your hand, letting it fit naturally into the bulge.

Note that since the pad 24 is attached to the pad rod 25, the abrasive material can be conveniently attached to the pad 24 by wetting it with water.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view of the product being gripped, Fig. 2 is a longitudinal side view, and Fig. 3 is an I.
FIG. 4 is a longitudinal cross-sectional view taken along the line II-III, and FIG. 4 is a cross-sectional plan view. In the figure, 1...motor, 2...polishing machine,
3...Motor rotating shaft, 4...Bush, 5...Brim, 6...Male thread, 7...
...Pin, 7a...Engagement groove, 8...
Casing, 9...Tightening ring, 10...
Menesh, 11...Stop ring, 14...
...Rotating shaft, 15... Eccentric protruding shaft, 16...
... Connector, 19... Lever, 20...
...Spindle, 21 ... Hole, 22 ... Follower, 23 ... Bearing, 24 ... Butt, 25 ... Butt Rod.

Claims (1)

[Scope of utility model registration request] Inside a cylindrical casing whose rear end can be detachably attached to the tip of a rod-shaped hand motor, there is provided a rotation shaft whose rear end can be connected to the drive shaft of the motor and has an eccentric protruding shaft at its tip. , the eccentric protruding shaft has a base inserted into the casing, a front end protruding outside the casing, and a substantially central portion of the base rotatably attached to a diametrical support shaft provided within the casing; The rear end of the swinging lever is engaged with an elongated hole parallel to the support shaft formed in the rear end face of the driven body, and a butt rod made of an elastic material is removably attached to the swinging lever with an attachment. A sword polisher with a bat attached to the tip of the bat rod.