Brush body and brush

Abstract

To provide a brush body capable of reliably preventing bristle materials from coming off, being broken and being cut, and brush including the brush body.SOLUTION: A brush body 10 includes a bristle bundle 2 formed by bundling a plurality of bristle materials 1 made of resin A, a connecting body 3 formed by fusion-bonding the root part of the bristle bundle 2 and made of resin A, and a base 4 formed to cover a part of a lateral face of each of the connecting body 3 and the bristle bundle 2 and made of resin B, where the resin B also fills between the bristle materials 1 and 1 on the lower part of the bristle bundle 2.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a brush that is attached to various types of equipment and used in various industrial and household products, and a brush body that constitutes the brush. [Background technology]

[0002] BACKGROUND ART Brushes made of bundled thermoplastic resin bristles have been known in the past (Patent Document 1).

[0003] The brush described in Patent Document 1 is made by bundling fibers made of a heat-fusible material to form a fiber bundle, pressing the lower end surface of this fiber bundle against the upper surface of a metal brush base that has been heated to a temperature above the heat-fusible temperature of the heat-fusible material to melt the lower end surface of the fiber bundle, and then cooling the brush base to fix the fiber bundle to the brush base.The fiber bundle is securely fixed to the brush base by first applying a thin layer of heat-fusible adhesive to the upper surface of the brush base. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3047999 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the brush described in Patent Document 1 above had the problem that the thin layer of heat-melting adhesive applied to the top surface of the brush base did not penetrate sufficiently to the base of the fiber bundles, and was therefore not sufficient to prevent fibers from coming loose, breaking, or breaking.

[0006] The present invention is intended to solve the above-mentioned conventional problems, and aims to provide a brush body that can reliably prevent bristles from falling out, breaking, or being cut, and a brush equipped with the brush body. [Means for solving the problem]

[0007] In order to solve the above-mentioned conventional problems, the invention of claim 1 is as follows: thermoplastic resin A hair bundle formed by converging a plurality of hair materials consisting of A and fusing and bonding the root portion of the hair bundle. thermoplastic resin A linker consisting of A and the linker All of the aspects of The hair bundle is formed so as to cover a part of the side surface thereof. thermosetting resin A brush body having a base made of B teeth, of the base thermosetting resin B is also filled between the bristles at the bottom of the bristle bundle, the bottom surface of the connecting body is not covered by the base, and the length of the base in the thickness direction is at least twice the length of the connecting body in the thickness direction; The aforementioned A brush having a brush body and a brush base to which the brush body is attached, wherein the base is fitted into a groove formed in the brush base or fixed to the groove, and the base has a protrusion that fits into or is fixed to the groove in the brush base, and a cover that protects the side of the bristle bundle, and each of the protrusion and the cover is provided on the side of the base, and the protrusion is formed on the underside of the base and the cover is formed on the upper side.

[0008] In the invention of claim 1, the base made of resin B is All of the aspects of Since it covers part of the side of the bristle bundle, it is possible to prevent the bristles from falling out, breaking, or being cut. Furthermore, since resin B of the base is filled between the bristles at the bottom of the bristle bundle, it is possible to further prevent the bristles from falling out, breaking, or being cut. Furthermore, since the base is integrally formed between the side of the connecting body, the side of the bristle bundle, and the spaces between the bristles in the bristle bundle, the base is unlikely to break even if strong stress is applied to the bristles during use. Furthermore, the thickness direction length of the base is more than twice the thickness direction length of the connecting body, so that the base portion of the bristle bundle, which has become thinner due to fusion bonding, can be reliably protected, further preventing the bristle from falling out, breaking, or being cut.

[0009] The invention of claim 1 is as follows: Resin A is a thermoplastic resin, and Resin B is a thermosetting resin. So,During manufacturing, the bristle bundles can be attached to the base and then the bases of the bristle bundles can be fused together to create a connected body, which makes the brush lighter than when a metal base is used, shortens the manufacturing and disposal processes, and reduces costs.It also further prevents the bristle from falling out, breaking, or being cut.

[0012] The invention of claim 1 is as follows: A brush having a brush body and a brush base on which the brush body is attached, the base being fitted into a groove formed in the brush base or fixed to the groove, the base having a protrusion that fits into the groove of the brush base or fixed to the groove, and a cover that protects the side of the bristle bundle, the protrusion and the cover being each provided on the side of the base, the protrusion being formed on the lower surface of the base, and the cover being formed on the upper surface. So, This makes it easy to manufacture brushes, reducing manufacturing costs. Furthermore, by fixing the brush body to the brush base, it can be attached to a variety of devices. Furthermore, because the sides of the bristle bundle are protected, it is possible to further prevent the bristles from falling out, breaking, or being cut due to friction with the corners of the brush base.

[0014] Claim 2 The invention is 1 In the invention, the brush base has a portion of its outer surface fitted into a groove formed in the brush or fixed by being firmly attached to the groove, and the brush base is made of resin C made of a thermoplastic resin. This makes molding easy and the shape stable, making it easy to manufacture the brush and reducing manufacturing costs.

[0015] Claim 3 The invention is 1 or 2In the invention, the base and the brush base have a plurality of air bubbles inside, and the brush base has a smaller air bubble content than the base. This makes the brush base less likely to break even if the base and the brush base are made of the same resin material, so the base of the bristle bundle can be reliably protected and the bristle can be more effectively prevented from falling out, breaking, or being cut.

[0016] Claim 4 The invention is 1~3 In any one of the above-mentioned inventions, the brush body has a plurality of brush bodies, and the bases of the adjacent brush bodies are connected. This improves the strength of the bases and prevents the brush bodies from shifting. In addition, the brush can be easily manufactured, which reduces manufacturing costs. [Effects of the Invention]

[0017] The brush invention of claim 1 can prevent bristles from falling out, breaking, or being cut. It also shortens the manufacturing and disposal processes, thereby reducing costs.

[0018] Claim 1 or 2 and 4 Brush of The invention allows for easy brush manufacturing and reduces manufacturing costs. 3 The invention of claim 1 can reliably protect the roots of the bristle bundle, and can further prevent the bristle from falling out, breaking, or being cut. 4 The invention can improve the strength of the base and prevent the brush body from shifting. [Brief explanation of the drawings]

[0019] [Figure 1] (a) A perspective view of the brush body of the first embodiment as seen from above. (b) A perspective view of the brush body of the first embodiment as seen from below. [Figure 2] (a) A cross-sectional view of a brush body according to a first embodiment; (b) A cross-sectional view of a brush body according to a second embodiment; (c) A cross-sectional view of a brush body according to a third embodiment. [Figure 3] (a) is a perspective view showing the state in which the brush body is attached to the brush base; (b) is a cross-sectional view taken along the line AA in FIG. 3(a). [Figure 4] 1 is a perspective view showing a brush according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments. Fig. 1(a) is a perspective view of a brush body of a first embodiment viewed from above, and Fig. 1(b) is a perspective view of the brush body of the first embodiment viewed from below. Also, Fig. 2(a) is a cross-sectional view of the brush body of the first embodiment. The first embodiment of the brush body according to the present invention will be described below using these figures.

[0021] The brush body 10 of the first embodiment has a bristle bundle 2 formed by bundling a plurality of bristles 1 made of resin A, a connector 3 made of resin A formed by fusing and bonding the bases of the bristle bundles 2, and a base 4 made of resin B formed so as to cover part of the side surfaces of the connector 3 and the bristle bundles 2. This prevents the bristles 1 from falling out, breaking, or being cut.

[0022] Furthermore, the resin B that constitutes the base 4 is also filled between the bristles 1 at the bottom of the bristles bundle 2. This further prevents the bristles 1 from falling out, breaking, or being cut. Furthermore, because the base 4 is integrally formed between the side surface of the connector 3, the side surface of the bristles bundle 2, and the spaces between the bristles 1 of the bristles bundle, the base 4 is less likely to break even if a strong stress is applied to the bristles 1 during use.

[0023] Furthermore, resin A constituting the bristle bundle 2 and connector 3 is preferably a thermoplastic resin, and resin B constituting the base 4 is preferably a thermosetting resin. This allows the base 3 to be created by melting and bonding the base of the bristle bundle 2 while the bristle bundle 2 is attached to the base 4 during manufacturing, which makes the product lighter than when metal fittings are used for the base, shortens the manufacturing and disposal processes, and reduces costs. It also further prevents the bristle 1 from falling out, breaking, or being cut.

[0024] Furthermore, it is preferable that the thickness of the base 4 is at least twice the thickness of the connector 3. This ensures that the roots of the bristle bundles 2, which have become thinner due to fusion bonding, are protected, further preventing the bristle 1 from falling out, breaking, or being cut.

[0025] An example of a manufacturing procedure for the brush assembly 10 of the first embodiment will be described below. (1) First, a bundle of bristles 1 is placed into a mold A. (2) Next, one end of the bristle bundle is pressed against an iron plate heated by a heater to melt it with heat. (3) Next, the molten resin A flows into the mold A, and after it is confirmed that it has filled up, the iron plate is removed and the bristles 1 are cooled. In this state, a temporary brush body with the connectors 2 formed is formed. (4) Next, the temporary brush body created in (3) is placed in another mold B. (5) Next, resin B is filled into mold B, and then heat is applied to complete the brush body 10 on which the base 4 is formed.

[0026] 2(b) is a cross-sectional view of a brush body according to a second embodiment. The brush body 10a according to the second embodiment is an example in which the base 4a is formed to cover the underside of the connecting body 3a. This prevents the connecting body 3a from being damaged by external forces, and further prevents the bristles 1 from falling out, breaking, or being cut.

[0027] 2(c) is a cross-sectional view of a brush body according to a third embodiment. In the brush body 10b of the third embodiment, the base 4b has a protrusion 8 that fits into or is fixed to a groove in the brush base 5, and a cover 9 that protects the side surfaces of the bristle bundle. The protrusion 8 and cover 9 are each provided on the side surfaces of the base 4b, with the protrusion 8 formed on the underside of the base 4b and the cover 9 formed on the upper side. This facilitates brush manufacturing and reduces manufacturing costs. Furthermore, because the sides of the bristle bundle are protected, it is possible to further prevent the bristles from falling out, breaking, or being cut due to friction with the corners of the brush base.

[0028] Fig. 3(a) is a perspective view showing the brush body attached to the brush base, and Fig. 3(b) is a cross-sectional view taken along line AA in Fig. 3(a). Fig. 4 is a perspective view showing the brush according to the present invention. The brush according to the present invention will be described below using these figures.

[0029] The brush of the present invention has a brush body and a brush base to which the brush body is attached, and the base is configured to fit into a groove formed in the brush base or to be fixed by being firmly attached to the groove, which makes it easy to manufacture the brush and reduces manufacturing costs.

[0030] The brush shown in Figure 4 is an example of a brush for cleaning bouldering walls and holds, and the brush bundle is triangular prism-shaped, with the corners being used to clean dirt, but the shape of the brush bundle that constitutes the brush of the present invention is not limited to this, and various shapes can be used depending on the purpose of use. For example, a brush bundle in the shape of a square prism or a cylinder can be used.

[0031] Furthermore, part of the outer surface of the brush base 5 is fitted into a groove formed in the cover 6 of the brush 20 or is fixed by being firmly attached to the groove, and the brush base 5 is made of a thermoplastic resin C. This makes molding easy and the shape stable, making it possible to easily manufacture the brush 20 and reduce manufacturing costs.

[0032] Although the base 4c and the brush base 5 have multiple air bubbles inside, the brush base 5 is designed to have a smaller amount of air bubbles than the base 4c. This makes the brush base 5 less likely to break even if the base 4c and the brush base 5 are made of the same resin material, so the base of the bristle bundle 2 can be reliably protected, and the bristles can be further prevented from falling out, breaking, or being cut.

[0033] The brush 20 has multiple brush bodies 10c, 10c.... In addition to the structure of the brush body 10a of the second embodiment, the brush body 10c has the bases 4c of adjacent brush bodies 10c, 10c connected to each other. This further improves the strength of the bases 4c and prevents the brush bodies 10c from shifting. Furthermore, the brush 20 can be easily manufactured, reducing manufacturing costs.

[0034] An example of a manufacturing procedure for the brush 20 is shown below. (1) First, a brush base is made from resin C. Resin C is a thermoplastic resin that is manufactured by injection molding, making it easy to mold and maintaining a stable shape. It is also inexpensive, can be mass-produced, and does not require much time to manufacture. (2) Next, each bristle bundle is inserted into the multiple triangular holes formed in the brush base (the lower inner surface of the hole is stepped to prevent the base from falling out after the bristle is inserted, and also functions as a mold for forming the base). (3) Next, the tips of the inserted bristle bundles made of resin A are melted and bonded to form a connected body. (4) Next, a thermosetting resin made of resin B is poured into the stepped gaps of the brush base so as to cover the connecting body, thereby creating a base. Here, since the outer periphery of the brush base 5 is covered with the cover 6, the bases of each bristle bundle are connected by adjusting the amount of resin B. (5) Finally, the completed brush unit is attached to the brush handle 7 to complete the brush 20. [Industrial Applicability]

[0035] The brush body and brush according to the present invention are used in industrial applications by being assembled into various types of equipment, and are also used in household products. [Explanation of symbols]

[0036] 1 Hair material 2 Hair bundle 3, 3a Concatenation 4, 4a, 4b, 4c base 5 Brush stand 6 Cover 7 patterns 8 Protrusion 9 Cover 10, 10a, 10b, 10c Brush body 20 brushes

Claims

1. A bristle bundle formed by converging a plurality of bristle materials made of thermoplastic resin A; a connecting body made of thermoplastic resin A formed by melt-bonding the base portions of the bristle bundles; a brush body having a base made of a thermosetting resin B formed so as to cover the entire side surface of the connecting body and a part of the side surface of the bristle bundle; The thermosetting resin B of the base is also filled between the bristles at the bottom of the bristle bundle, the bottom surface of the connector is not covered by the base, and the length of the base in the thickness direction is at least twice the length of the connector in the thickness direction. In a brush having the brush body and a brush base on which the brush body is attached, the base is fitted into a groove formed in the brush base or is fixed to the groove, and The base has a protruding portion that fits into or is fixed to the groove of the brush stand, and a cover portion that protects the side of the bristle bundle, and the protruding portion and the cover portion are each provided on the side of the base, and the protruding portion is formed on the lower surface of the base, and the cover portion is formed on the upper surface of the base.

2. 2. The brush according to claim 1, wherein a part of the outer surface of the brush base is fitted into a groove formed in the brush or is fixed to the groove, and the brush base is made of a thermoplastic resin C.

3. 3. The brush according to claim 1, wherein the base and the brush base have a plurality of bubbles therein, and the brush base has a smaller amount of bubbles than the base.

4. 4. The brush according to claim 1, further comprising a plurality of brush bodies, the bases of the adjacent brush bodies being connected to each other.

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