【０００１】
【発明が属する技術分野】歯ブラシ、ボディーブラシ、キッチンブラシ、服ブラシ等々、生活道具である多種多様なデザインの少量生産品の手動ブラシを少ない初期投資で開発する仕組みとして、軸部１の両端にブラッシング機能を有する頭部２とグリップ機能を有する本体３をそれぞれ個別に結合させ構成する。
【０００２】
【従来の技術】従来型手動ブラシの多くは、（図２）で示す通り、軸部１と頭部２と本体３が一体で形成されている為、ブラシ全体が頭部２の材質や製法の制約を受けた大量生産型のものとなっている。
【０００３】その他の従来型手動ブラシには、軸部１と一体となった頭部２と本体３に分割された図３−Ａ．Ｂ．Ｃ．Ｄで示す様な２分割した着脱式のものや、それ以外に頭部２に於けるブラッシング機能を有する部位４（植毛部）のみを頭部２から分離し、この部位のみの交換を可能とする外国製品Ｅ等があるが、これらもやはり大量生産を前提とした仕様となっている。
特に、この外国製品Ｅは、頭部２に於けるブラッシング機能を有する部位４（植毛部分）の製法が新方式となっており、従来設備を用いた多種多様なデザインの少量生産方式を前提とはしていない。
【０００４】
【発明が解決しようとする課題】従来型手動ブラシの多くは、ブラッシング機能を有する頭部２と軸部１及び本体３が一体又は２分割で形成された単品完結型商品である為、新商品開発時毎にその都度高額な初期投資（金型費）が必要となると共に、ブラッシング機能を有する頭部１が傷むと、ブラシ全体を廃棄せざるを得ず、その為環境負荷が高く、経済的な面からも好ましくない。
【０００５】
以上の様な事から本発明は、商品開発時の高額な初期投資の軽減と、環境負荷を軽減した手動ブラシを、既存の製造設備を用いて提供する事を目的とする。
【０００６】
【課題を解決するための手段】本発明は、手動ブラシを構成する軸部１、頭部２、本体３の材質や製法を特定せずに制作し、これら個別に制作した軸部１、頭部２、本体３に、結合と分離を確実・容易に行える機能を持たせる。そしてその機能の構造は、軸部１の両端に頭部２及び本体３をそれぞれ個別に結合させる為の凸又は凹を軸部１の両端、頭部２、本体３に設ける。
具体的には、頭部２に軸部１の一端ｃに設けた凹ａと嵌合し結合させる凸ｂを設け、その結合の方法は（イ）凹と凸の嵌合による結合、（ロ）ねじによる結合、（ハ）前述の（イ）と（ロ）の併用による結合等、物理的（機械的）な方法を用いる。
また本体３にも軸部１のもう一方の先端ｄに設けた凹ｅと嵌合し、結合させる凸ｇを設け、軸部１と本体３を結合する。ただしここで云う凹と凸の関係は互いを結合させる手段を指し、単なる形状のみを指すのではない。又その結合の方法は前述した頭部２の結合方法と同じく、（イ）凹と凸の嵌合による結合、（ロ）ねじによる結合、（ハ）前述の（イ）と（ロ）の併用による結合等、物理的（機械的）結合の方法に加え、接着、溶着等の方法も含めたものとする。
【０００７】
【発明の実施の形態】添付図面中の参照符号を用いて以下に説明する。（図４）
例えば凹と凸で互いに結合させる方法を例に、頭部２と軸部１の結合について説明すると、頭部２に設けた凸ｂに、これに嵌合する形で設けた凹ａを有する軸部１の一端ｃを頭部２の凸ｂに嵌合する様に圧入すれば、頭部２の軸部挿入部内壁ｈ下部に設けた凸ｂが軸部１の先端に押されて下にたわみ、更に圧入すると凸ｂが復元し、軸部１の凹ａが頭部２の凸ｂと嵌合して結合が完了する。また上記の凹と凸の関係が逆の場合も同様である。
分離は、軸部１と頭部２を強引に抜脱する事で可能となる。
頭部２の交換は先ず頭部２を前述の方法で抜脱し、その後に新しい頭部２を前述と同様の方法で軸部１に圧入する。
尚、上記説明の凹と凸の関係は、結合と分離の具体的構造を指すのではなく、あくまでも結合と分離の手段を説明（例）したものである。
【０００８】本体３と軸部１との結合は、本体３の上部ｆに設けた凸ｇに軸部１のもう一方の先端ｄを圧入し嵌合させて結合する。軸部１の本体３からの抜け防止は（イ）凹と凸の嵌合による結合、（ロ）ねじを用いた方法による結合、（ハ）前述の（イ）と（ロ）を併用する方法などとする。
尚、上記説明の凹と凸の関係は、結合と分離の具体的構造を指すのではなく、あくまでも結合と分離の手段を説明（例）したのである。また凹と凸の関係が逆の場合も同様である。
【０００９】
【発明の効果】本発明は、手動ブラシのブラッシング機能を持つ頭部２を他の部位から分離し、規格化（標準部品化）する事で以下に示すような多様な効果が得られる。
（１）頭部２のみの金型は非常にコンパクトなものとなり、従って開発時の初期投資（金型費）も大幅な軽減が可能となる。
（２）軸部１と本体３は、頭部２の材質や製法に制約される事なく自在に材質や製法を選択でき、よって多種多様なデザインの少量生産品の開発が容易となる。
（３）多種多様なデザインの手動ブラシを構成する仕組みは、機能性以外の価値も付加した個性豊かな商品の開発を容易とし、この事により機能性重視の従来型手動ブラシ以外の新たな市場の開発が可能となる。
（４）頭部２のブラッシング機能が低下し交換が必要となった場合、交換部位は頭部２のみで良く、軸部１、本体３は継続使用でき環境負荷の少ないグリーン商品の提供が可能となる。又これは消費者が無駄な出費を抑制出来るという経済的な効果もある。
【図面の簡単な説明】
【図１】本発明の実施形態例である軸部１と頭部２と本体３を組み合わせた構成事例図である。
【図２】従来の手動ブラシの斜視図である。
【図３】分離・結合が可能な構造の従来型手動ブラシの参考事例図である。
【図４】本発明の実施形態例である軸部１と頭部２と本体３を組み合わせた構成事例のＡ−Ａ断面図である。
【符号の説明】
１ 軸部
２ 頭部
３ 本体
４ 植毛部
Ａ 差し込み式手動ブラシの参考事例Ａ
Ｂ 差し込み式手動ブラシの参考事例Ｂ
Ｃ 携帯用差し込み式手動ブラシの参考事例Ｃ
Ｄ 携帯用差し込み式手動ブラシの参考事例Ｄ
Ｅ はめ込み式手動ブラシの参考事例Ｅ
ａ 軸部頭部側に設けた凹
ｂ 頭部の軸部挿入部内壁下部に設けた凸
ｃ 凹を有する軸部の頭部側先端
ｄ 凹を有する軸部の本体側先端
ｅ 軸部本体側に設けた凹
ｆ 本体の上部
ｇ 本体に設けた凸
ｈ 軸部挿入部内壁[0001]
The present invention relates to a mechanism for developing a small amount of hand-manufactured manual brushes of various designs, such as toothbrushes, body brushes, kitchen brushes, clothes brushes, etc., with a small initial investment. The head 2 having a brushing function and the main body 3 having a grip function are individually connected to each other.
[0002]
2. Description of the Related Art As shown in FIG. 2, most conventional manual brushes have a shaft 1, a head 2 and a main body 3 integrally formed, so that the whole brush is made of a material and a manufacturing method of the head 2. It is a mass-production type subject to restrictions.
[0003] Other conventional manual brushes include a head 2 integrated with a shaft 1 and a main body 3 as shown in FIG. B. C. It is possible to separate only the part 4 (flocked portion) having a brushing function in the head 2 from the head 2 so that only this part can be replaced. There are foreign products E, etc., which also have specifications based on mass production.
In particular, this foreign product E has a new method of manufacturing a portion 4 (flocked portion) having a brushing function in the head 2 and is based on a small-quantity production method of various designs using conventional equipment. I haven't.
[0004]
Most of the conventional manual brushes are new products because the head 2 having a brushing function, the shaft portion 1 and the main body 3 are formed as a single product or a two-piece product. Each time development is performed, a large initial investment (mold cost) is required each time, and if the head 1 having the brushing function is damaged, the entire brush must be discarded, which results in a high environmental load and economy. It is not preferable from the viewpoint of the quality.
[0005]
In view of the above, an object of the present invention is to provide a manual brush with reduced initial investment at the time of product development and reduced environmental load using existing manufacturing equipment.
[0006]
SUMMARY OF THE INVENTION According to the present invention, the shaft 1, head 2 and main body 3 constituting a manual brush are manufactured without specifying the material and manufacturing method thereof. The part 2 and the main body 3 are provided with a function that can reliably and easily combine and separate. The structure of the function is such that protrusions or depressions for individually coupling the head 2 and the main body 3 to both ends of the shaft 1 are provided at both ends, the head 2 and the main body 3 of the shaft 1.
Specifically, the head 2 is provided with a convex b which is fitted and coupled with the concave a provided at one end c of the shaft portion 1, and the coupling method is (a) coupling by concave-convex coupling, (b) ) A physical (mechanical) method such as a screw connection, (c) a connection using the above (a) and (b) in combination, or the like is used.
Also, the main body 3 is provided with a convex g to be fitted and coupled with the concave e provided at the other end d of the shaft portion 1, and the shaft portion 1 and the main body 3 are combined. However, the relationship between the concave and the convex as referred to herein indicates a means for connecting them together, and does not indicate only a simple shape. The method of connection is the same as the connection method of the head 2 described above, (a) connection by fitting a concave and a convex, (b) connection by a screw, (c) combination of the above (a) and (b) In addition to the method of physical (mechanical) connection such as bonding by the method described above, methods such as adhesion and welding are also included.
[0007]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. (FIG. 4)
For example, the coupling between the head 2 and the shaft portion 1 will be described by way of an example of a method of coupling the head 2 and the shaft 1 with a concave and a convex. A shaft having a convex b provided on the head 2 and a concave a provided so as to fit therewith If one end c of the part 1 is press-fitted so as to fit into the protrusion b of the head 2, the protrusion b provided on the lower part of the inner wall h of the shaft part insertion part of the head 2 is pressed by the tip of the shaft part 1 and When bending and press-fitting are further performed, the convex b is restored, and the concave a of the shaft portion 1 is fitted with the convex b of the head 2 to complete the connection. The same applies to the case where the relationship between the concave and convex is reversed.
Separation is possible by forcibly removing the shaft 1 and the head 2.
To replace the head 2, the head 2 is first withdrawn in the manner described above, and then a new head 2 is pressed into the shaft 1 in the same manner as described above.
Note that the relationship between the concave and convex in the above description does not indicate a specific structure of coupling and separation, but merely describes (examples) means of coupling and separation.
The connection between the main body 3 and the shaft portion 1 is performed by press-fitting the other end d of the shaft portion 1 into a projection g provided on the upper portion f of the main body 3 and fitting them together. The shaft portion 1 is prevented from coming off from the main body 3 by (a) coupling by fitting a concave and a convex, (b) coupling by a method using a screw, and (c) a method of using the above (a) and (b) together. And so on.
Note that the relationship between the concave and convex in the above description does not indicate a specific structure of coupling and separation, but merely describes (examples) means of coupling and separation. The same applies when the relationship between the concave and the convex is reversed.
[0009]
According to the present invention, various effects as described below can be obtained by separating the head 2 having the brushing function of the manual brush from other parts and standardizing it (standard parts).
(1) The mold having only the head 2 is very compact, so that the initial investment (mold cost) during development can be greatly reduced.
(2) The material and manufacturing method of the shaft portion 1 and the main body 3 can be freely selected without being restricted by the material and manufacturing method of the head 2, thereby facilitating the development of small-quantity products with various designs.
(3) The mechanism for constructing manual brushes of various designs facilitates the development of unique products that add value other than functionality, and thus new markets other than conventional manual brushes that emphasize functionality. Can be developed.
(4) If the brushing function of the head 2 deteriorates and replacement is required, only the head 2 needs to be replaced, and the shaft 1 and the main body 3 can be used continuously and green products with less environmental impact can be provided. It becomes. This also has the economic effect that the consumer can reduce unnecessary expenses.
[Brief description of the drawings]
FIG. 1 is a configuration example showing a combination of a shaft portion 1, a head portion 2, and a main body 3 according to an embodiment of the present invention.
FIG. 2 is a perspective view of a conventional manual brush.
FIG. 3 is a reference example diagram of a conventional manual brush having a structure capable of being separated and connected.
FIG. 4 is an AA cross-sectional view of a configuration example in which a shaft portion 1, a head portion 2, and a main body 3 are combined according to an embodiment of the present invention.
[Explanation of symbols]
1 Shaft 2 Head 3 Main body 4 Flocked part A Reference example A of plug-in type manual brush
B Reference example B of plug-in type manual brush
C Reference example C of portable plug-in manual brush
D Reference example D of portable plug-in manual brush
E Reference example E of built-in manual brush
a a concave portion provided on the shaft head side b a convex portion provided on a lower portion of the inner wall of the shaft portion insertion portion c a head-side distal end of the shaft portion having the concave d a main body-side distal end of the concave shaft portion e the shaft portion main body side The concave f provided in the upper part of the main body g The convex h provided in the main body
