JP2009126048A - Writing brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing brush which can easily provide flexibility and resilience of a brush neck even if bristles having almost uniform elasticity are used. <P>SOLUTION: The writing brush is provided with: a barrel axis 10; and a brush neck 11 whose fixed base part 11a is fixed to the distal end of the barrel axis 10, wherein a tapered coil spring 15 whose one end is fixed to the fixed base part 11a of the brush neck 11 and whose diameter is made smaller toward the distal end of the brush neck 11 is buried in the inside of the brush neck 11, and bristles 12 arranged at the inside and outside of the tapered coil spring 15 are assembled at the distal end side of the brush neck 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an improvement of a writing brush comprising a body shaft and a neck that has a fixed base fixed to the tip of the body shaft.

  In calligraphy, the acquisition of delicate brush usage such as stopping, repelling, and paying off the neck is an important factor for improvement. To promote the acquisition of the brush usage, A certain suppleness is required. Conventionally, in order to give a supple flexibility to the neck of a brush brush, it is cut into lengths corresponding to the waist, abdomen, throat and life of the neck, and the number has elasticity corresponding to each. The head is made by mixing seed hairs.

  However, in order to produce a neck by the above method, expensive hair is required and extremely high skill is required, so that a brush is expensive.

  The present invention has been made in view of such circumstances, and provides a writing brush that can easily obtain the flexibility of the waist of the neck even when using hair having substantially uniform elasticity. The purpose is to do.

  In order to achieve the above object, the present invention provides a brush having a trunk shaft and a panicle fixed to the tip of the trunk shaft, and one end is fixed to the fixed base inside the neck. The first feature is that a taper coil spring having a small diameter toward the tip of the neck is embedded, and hairs arranged inside and outside the taper coil spring are assembled on the tip side of the head. .

  In addition to the first feature, the second feature of the present invention is that the large-diameter end of the taper coil spring is locked to a spring holder fixed to the fixed base of the head.

  According to the first feature of the present invention, due to the bending characteristics of the taper coil spring, which is relatively easy to bend on the small diameter side but difficult to bend on the large diameter side, the head is sure to have a repulsive force as the bending increases. The person who conducts calligraphy can feel the repulsive force accurately with his fingers, so he can easily use the life of the neck, the throat, and the belly, and stop and repel the head. You can learn subtle brushing such as payment early. You can also easily write fine and bold characters with a single brush. Moreover, because the hairs arranged inside and outside the taper coil spring are gathered at the tip of the neck, even when using the throat or belly, you can write beautiful characters without cracking the tip. it can. Furthermore, by embedding a taper coil spring, it is possible to obtain a supple neck with a waist as described above even when bundling hairs with substantially uniform elasticity, and this can contribute to a reduction in the cost of writing brushes. .

  According to the second feature of the present invention, the taper coil spring can be easily and reliably attached to the neck.

  Embodiments of the present invention will be described below on the basis of preferred embodiments of the present invention shown in the accompanying drawings.

  FIG. 1 is an enlarged longitudinal sectional view of a main part including a neck of a writing brush according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG.

  In FIG. 1, the writing brush M includes a hollow body shaft 10 and a fixed neck 11 attached to one end of the body shaft 10. The neck 11 is formed by mixing and bundling a large number of hairs 12 cut into lengths corresponding to the waist 11b, the belly 11a, the throat 11d, and the life hair 11e, respectively. A spring holder 13 fixed to the fixed base portion 11a and a taper coil spring 13 supported by the spring holder 13 and extending from the fixed base portion 11a to the vicinity of the throat 11d and having a small diameter toward the tip of the head 11 are embedded. The The taper coil spring 13 is made of stainless steel or synthetic resin.

  As shown in FIGS. 1 and 2, the spring holder 13 is made of a synthetic resin, and includes a flange 13a and a plurality of support pieces 13b protruding in an annular arrangement so as to surround the center of one end surface of the flange 13a. A locking groove 14 in an annular arrangement is provided on the outer periphery of the support piece 13b group, and the locking groove 14 has one winding of the coil wire at the large-diameter end of the taper coil spring 13. Is elastically engaged with the locking groove 14, and the end 15a of the wire is bent to the side of the support piece 13b in order to fix it. By doing so, the taper coil spring 13 can be easily and reliably attached to the head 11.

  A large number of bristles 12 constituting the neck 11 are bundled together at the end face of the flange 13 a while being arranged inside and outside the taper coil spring 13. The bundle is secured by the thread 16 around the support piece 13 b group, and the secured portion becomes the fixed base portion 11 a of the neck 11. The fixed base portion 11a is fitted to the inner peripheral surface of the distal end portion of the barrel shaft 10 and fixed by adhesion or the like. Thus, the bristles 12 arranged inside and outside the taper coil spring 13 are gathered on the tip side of the neck 11.

  Next, the operation of this embodiment will be described.

  As shown in FIG. 3, assuming that the head 11 is gradually pressed against the paper and bent, the taper coil spring 13 embedded in the head 11 has a small diameter toward the tip of the head 11. Therefore, it is relatively easy to bend on the small diameter side, but is difficult to bend on the large diameter side. Due to the bending characteristics of the taper coil spring 13, the head 11 surely increases the repulsive force according to the increase of the bending, and the person who performs the calligraphy properly uses the repulsive force with the finger. Since it can be felt, the lifespan e, throat 11d, and belly 11a of the neck 11 can be easily used properly, and subtle brush strokes such as stopping, repelling, and paying off the neck 11 can be acquired at an early stage. In addition, with a single brush M, both small and bold letters can be easily written.

  In addition, since the hairs 12 arranged inside and outside the taper coil spring 13 are gathered at the tip side of the neck 11, even when using the throat 11 d and the belly 11 a, the tip crack does not occur. Can write beautiful characters.

  Further, by embedding the taper coil spring 13, it is possible to obtain the supple neck 11 having a waist even when using hair having substantially uniform elasticity, which can contribute to the reduction of the cost of the brush M.

  As mentioned above, although the Example of this invention was described, this invention is not limited to it, A various design change is possible in the range which does not deviate from the summary. For example, the thickness of the wire of the taper coil spring 13, the embedded region of the taper coil spring 13 in the neck 11, and the like can be appropriately set according to the type and use of the brush brush M.

The principal part expansion longitudinal cross-sectional view containing the neck of the brush which concerns on the Example of this invention. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. Action explanatory drawing of the said brush.

Explanation of symbols

M ... writing brush 10 ... body shaft 11 ... head 12 ... hair 13 ... spring holder 15 ... taper coil spring

Claims (2)

In a writing brush comprising a trunk shaft (10) and a neck (11) to which a fixed base (11a) is fixed at the tip of the trunk shaft (10),
A taper coil spring (15) having one end fixed to the fixed base (11a) and having a smaller diameter toward the tip of the head (11) is embedded in the head (11). The hair brush (12) arranged inside and outside the hair brush is gathered on the tip side of the neck (11). The writing brush according to claim 1,
A brush with the large diameter end of the taper coil spring (15) engaged with a spring holder (13) fixed to the fixed base (11a) of the neck (11).

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