JP2003325718A - Guard of bamboo sword - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guard of a bamboo sword which corresponds by itself to various diameters of the hilt of the bamboo sword to which it is fitted and to make it easy even for a relatively powerless child to fit it on and remove it from a hilt part 3a of the bamboo sword 3, in regard to the guard of the bamboo sword made integral with a guard retainer. <P>SOLUTION: A flat and disk-shaped rubber plate 5 is fitted in the circular recess part 1 of a guard main body 2. The rubber plate 5 and the circular recess part 1 are not joined at least by the flat surfaces thereof and each part of the rubber plate 5 is allowed to transmute radially for an external force applied to the rubber plate 5. The rubber plate 5 is so formed that the thickness of the central part thereof is smaller than that of the whole of the guard main body 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collar that is inserted into and removed from a handle of a bamboo sword, and does not require a collar.

[0002]

2. Description of the Related Art A brim for a bamboo sword used for kendo is often used in combination with a brim made of a plastic material or the like and having a rubber brim. The handle of this bamboo sword is wrapped with tubular leather, and the tip side is formed into a taper with a gradually increasing diameter, where the tsuba is first inserted from the rear end of the handle to the tip, and then the rubber tsuba is attached. It The inner circumference of the collar is formed smaller than the outer circumference of the end of the handle, and is pressed against the outer circumference of the handle so as not to move easily due to its elasticity. Such a tsuba and a tsuba stopper are separated from the bamboo sword after training and separately stored in a bamboo sword bag. At that time, the tsuba and the tsuba are separated, and the tsuba is smaller in diameter than the tsuba, so that the tsuba is easily lost.

Therefore, various proposals have heretofore been made in which the collar and the collar are integrated. For example, Japanese Patent Publication 05-2
No. 8154, "Bamboo sword guard", is an inner peripheral surface of a collar body, which is integrally insert-molded with a collar stopper of a soft elastic body.
The thickness of this tsuba is thicker than the thickness of the tsuba main body, and is formed in the axial direction to widen the inner peripheral surface of the tsuba and the contact surface of the handle of the bamboo sword for stability when attaching the tsuba to the handle. Have secured.

[0004]

The conventional one in which the collar and the collar stopper are integrally formed has a collar portion integrally formed on the inner peripheral surface of the rigid collar body. There was a flaw. First, since the amount of deformation of the collar is extremely small, it was necessary to strictly match the inner diameter of the collar with the mounting portion of the handle of the bamboo sword. However, a bamboo sword is made by combining four long bamboo pieces, and it is difficult to specify the diameter of the handle precisely. Moreover, a large number of handle thicknesses are prepared depending on the physique of the user, the size of the hand, and the like, and are selected according to the respective tastes. Therefore, it is extremely troublesome to prepare a brim with a brim that strictly matches them.

Further, since the elastic deformation of the collar fixing portion is extremely small, a large force is required to firmly attach the collar to the handle of the bamboo sword and to remove it, which is difficult for a weak child to insert and remove. There was a problem. Therefore, it is an object of the present invention to provide a sword and a sword stopper which are integrated and which can cope with the diameters of the handles of various bamboo swords and can be easily worn by even weak children.

[0006]

The present invention according to claim 1 provides a rigid collar body (2) in which a deep annular recess (1) is formed on the inner circumference, and a radial direction in the annular recess (1). A flat, disc-shaped rubber plate (5) that has an outer part inside and has a bamboo sword insertion hole (4) on the axis that is smaller than the diameter of the handle (3a) of the bamboo sword (3),
The inner diameter of the collar body (2) is larger than the diameter of the bamboo sword insertion hole (4) of the rubber plate (5), and the rubber plate is formed.
At least the flat surfaces of the (5) and the annular recess (1) are not joined to each other, and each part of the rubber plate (5) is allowed to move in the radial direction with respect to an external force, so that the rubber plate (5) is not displaced. The thickness of the central part is thinner than the entire thickness of the collar body (2), and when the collar body (2) is inserted into and removed from the handle (3a) of the bamboo sword (3), the rubber is placed on the rear side in the moving direction. It is a brim of a bamboo sword configured so that the central portion of the plate (5) is deformed into a tubular shape.

According to a second aspect of the present invention, in the first aspect, the collar body (2) has a dish-shaped first member (2a) having a hole at the center, and an outer periphery of the first member (2a). It is a brim of a bamboo sword which is aligned with the member (2a) and is composed of a second member (2b) having a hole in the center thereof, and the rubber plate (5) is interposed between the two members, and the two are joined and fixed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of the collar of the present invention,
FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG. Also, FIG.
FIG. 3 is an explanatory view showing a mounted state and a detached state of the collar of the present invention, respectively. The collar of the present invention, as shown in FIG. 1 and FIG.
It has a collar body 2 and a rubber plate 5. As shown in FIG. 2, the collar body 2 is composed of a dish-shaped first member 2a and a second member 2b each having a hole in the center, and the second member 2 is provided on the inner periphery of the first member 2a.
The outer circumferences of b are aligned. These first member 2a and second member 2
b can be formed of a plastic molded body.
In this example, with the rubber plate 5 fitted in the dish-shaped portion of the second member 2b, the adhesive is attached to the outer peripheral surface of the second member 2b and the edge portion adjacent to the outer periphery of the second member 2b. The collar can be configured by fitting the to the first member 2a.

The rubber plate 5 is formed into a flat disk shape, and for example, a rubber plate having a thickness of about 3 mm can be used.
In this example, the outer peripheral portion of the rubber plate 5 in the radial direction is the first member 2a.
And a deep annular recess 1 composed of the second member 2b. The interior portion of the rubber plate 5 is slightly larger than the exposed portion of the inner peripheral portion. Further, the flat surface portion of the rubber plate 5 and the inner surfaces of the dish-shaped recess 1a and the dish-shaped recess 1b are in a non-bonded state. The bamboo sword insertion hole 4 of the rubber plate 5 is formed sufficiently smaller than the handle portion 3 a of the bamboo sword 3.

Needless to say, the various dimensions of the rubber plate 5 and the collar body 2 can be appropriately changed in design as necessary. As an example, the outer diameter of the rubber plate 5 can be about 60 mm, and the inner diameter of the bamboo sword insertion hole 4 can be about 18 mm. The outer diameter of the collar body 2 is, for example, about 85 mm,
The inner diameter can be about 35 mm. Further, the thickness of the collar body 2 is about 8 mm, and the groove width of the annular recess 1 is 3 mm.
The depth can be about 12 mm, and the depth can be about 12 mm.

The collar of the present invention thus constructed is inserted from the rear end of the tapered handle portion 3a, as shown in FIG. At the time of insertion, the central portion of the rubber plate 5 is deformed rearward in the insertion direction, and the rubber plate 5 is deformed as shown by the solid line in FIG.
The central portion of the is a tubular portion 5a. At this time, in FIG.
Since the fitting portion between the rubber plate 5 and the annular recess 1 is not adhered by an adhesive agent or the like, the radial displacement also occurs inside the fitting between the rubber plate 5 and the annular recess 1. Therefore, the rubber plate 5 is easily deformed as shown in FIG.
The flat surface of the collar body 2 is orthogonal to the axis of the handle 3a.

According to the experiment, when the flat surface of the rubber plate 5 and the inner surface of the dish-shaped recess 1a and the inner surface of the dish-shaped recess 1b are bonded with an adhesive, when the brim is mounted on the handle 3a of the bamboo sword 3. , Its mounting resistance becomes extremely large. Also, it was extremely difficult to remove the collar after mounting. In particular, it turned out to be impossible for a weak child. However, in the present invention, since the flat surface of the rubber plate 5 and the flat surface of the inner surface of the annular recess 1 of the collar body 2 are in a non-bonded state, the radial displacement is possible even in the fitting portion of both, and the mounting and mounting thereof. It was found to be easy to remove and attach. That is, even a relatively weak child can easily insert and remove the child. When the collar body 2 is removed from the handle portion 3a, the tubular portion 5a of the rubber plate 5 is deformed in a direction opposite to the solid line state, like a chain line. Such deformation can be easily performed by making the thickness of the rubber plate 5 thinner than that of the collar body 2. If the thickness of the rubber plate 5 is set to the thickness of the collar body 2, the deformation becomes difficult.

[0013]

In the bamboo sword guard of the present invention, the annular recess 1 of the collar body 2 is internally provided with the radially outer portion of the disk-shaped rubber plate 5, and at least the rubber plate 5 and the annular recess 1 are provided. The respective planes of the rubber plate 5 are configured to be allowed to shift in the radial direction with respect to an external force applied to the rubber plate 5 without the planes thereof being joined by an adhesive or the like. further,
When the collar main body 2 is inserted into or removed from the handle portion 3a of the bamboo sword 3, the rubber plate 5 is configured such that the center portion thereof is deformed into a tubular shape rearward in the moving direction.

With the above construction, when the tsuba is attached to the handle portion 3a of the bamboo sword 3, the attached state can be surely held, and the tsuba of the present invention can be inserted and removed even by a relatively weak child. Is easy. This is based on the fact that the external force applied to the rubber plate 5 at the time of insertion / removal can be displaced in the radial direction even at each part of the rubber plate 5, particularly at the part inserted into the annular recess 1. Furthermore, because it is configured as above, even if the thickness of the pattern of various bamboo swords changes,
It is possible to attach this tsuba. In other words, this tsuba can handle various thicknesses of bamboo swords.

[Brief description of drawings]

FIG. 1 is a plan view of a collar according to the present invention.

2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an explanatory view showing a state in which the brim of the present invention is inserted into and removed from the handle portion 3a of the bamboo sword 3.

[Explanation of symbols]

1 annular recess 1a Plate-shaped recess 1b Plate-shaped recess 2 Tsuba body 2a First member 2b Second member 3 bamboo sword 3a handle 4 bamboo sword insertion holes 5 rubber plate 5a tubular part 6 adhesive

Claims (2)

[Claims] 1. A rigid brim body (2) having a deep annular recess (1) formed on the inner circumference thereof, and a radially outer portion inside the annular recess (1), and a bamboo sword (3) on the axis. Bamboo sword insertion hole that is smaller than the diameter of the handle (3a)
(4) having a flat and disk-shaped rubber plate (5), and the inner diameter of the collar body (2) is larger than that of the bamboo sword insertion hole (4) of the rubber plate (5). The rubber plate (5) and the annular recess (1) are not joined at least at their planes, and each part of the rubber plate (5) is not displaced in the radial direction due to an external force. Allowed, the thickness of the central part of the rubber plate (5) is made thinner than the total thickness of the collar body (2), and when inserting the collar body (2) into the handle (3a) of the bamboo sword (3), A brim of a bamboo sword, which is configured such that the central portion of the rubber plate (5) is deformed into a tubular shape on the rear side in the moving direction. 2. The flange body (2) according to claim 1, wherein the outer periphery of the collar body (2) is aligned with the first member (2a) formed in a dish shape having a hole in the center, and the outer periphery of the first member (2a). A bamboo sword brim comprising a second member (2b) having a hole in the center thereof, and the rubber plate (5) interposed between the two members, whereby the two members are joined and fixed.