Brush

Abstract

To provide a brush capable of reliably suppressing detachment and folding of a bristle material and smoothly being fitted to a groove portion in a brush base.SOLUTION: A brush 10 configured to fit in a groove portion formed in a brush base includes: a bristle material bundle 2 in which a plurality of bristle materials 1, 1... are collected; and a base 3 that fixes one end 2c of the bristle material bundle and fits in the groove portion in the brush base. An outer peripheral surface 2a of the bristle material bundle on a root side and an upper surface 3a of the base are coated with a lubricant 4. An internal portion 2b of the bristle material bundle on the root side is filled with an adhesive 5.SELECTED DRAWING: Figure 1

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. [Background technology]

[0002] 2. Description of the Related 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 create a fiber bundle, and then pressing the lower end surface of this fiber bundle against the upper surface of a metal brush base that has been heated to above the heat-melting temperature of the heat-fusible material to melt the lower end surface of the fiber bundle.The brush base is then cooled to adhere the fiber bundle to the brush base.A thin layer of heat-fusible adhesive is applied to the upper surface of the brush base in advance to ensure that the fiber bundle is adhered to 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-meltable 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 or breaking.

[0006] On the other hand, if the amount of adhesive filled in the base part of the fiber bundle is increased, a puddle of solidified adhesive remains on the outer surface of the base part of the fiber bundle or on the side of the brush base, etc., which creates the problem that it becomes difficult to fit the brush into the groove formed in the brush base.

[0007] The present invention is devised to solve the above-mentioned problems in the conventional art, and aims to provide a brush that can reliably prevent bristles from falling out or breaking, and that can be smoothly fitted into the grooves of the brush base. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the invention of claim 1 is a brush that fits into a groove formed in a brush base, the brush having a bristle bundle in which a plurality of bristles are bundled, and a base to which one end of the bristle bundle is fixed and which fits into the groove of the brush base, The base has a base and a reinforcing part formed to cover the outer peripheral surface of the base and the outer peripheral surface of the root side of the hair bundle, the hair constituting the hair bundle is made of a thermoplastic resin, and the base or a part of the base is formed by melt-bonding one end of the hair bundle, An outer peripheral surface of the base side of the hair bundle; An upper end surface of the reinforcing portion A lubricant is applied to both ends of the bristle bundle, and an adhesive is filled inside the base side of the bristle bundle.

[0009] In the invention of claim 1, the inside of the root side of the hair bundle is filled with adhesive, so that the occurrence of hair falling out or breaking can be reliably prevented. Top surface of reinforcement Since a lubricant is applied to both the brush holder and the brush base, adhesive puddles are less likely to form in those areas, and the brush holder can be smoothly fitted into the groove. In addition, since one end of the bristle bundle and the outer peripheral surface at the base side are covered with the base and the reinforcing part, it is possible to further prevent the bristle from falling out or breaking. In addition, the brush can be stabilized when it is fitted into the brush stand. In addition, compared to when a metal fitting is used for the base, the brush is lighter in weight and the manufacturing and disposal processes can be shortened, resulting in cost reduction. In addition, it is possible to further prevent the bristle from falling out or breaking.

[0012] Claim 2 The invention is as follows: 1 In the invention, the base has a void portion that communicates with the outer surface and the inside, and the void portion is filled with an adhesive material, thereby increasing the strength of the base.

[0013] Claim 3 The invention is as follows: 1 or 2 In the invention, the lubricant is Top surface of filled adhesive This is characterized by the fact that the outer peripheral surface of the root side of the bristle bundle and the Top surface of reinforcement This can further prevent adhesion pools from forming on the substrate.

[0014] Claim4 The invention is as follows: 1~3 In any one of the above-mentioned inventions, The top surface of the filled adhesive is The brush is characterized by being higher at the center than at the outer periphery of the bristles, which increases the bonding area at the center of the bristles, increasing the strength of the brush and further preventing the bristles at the center from falling out or breaking.

[0015] Claim 5 The invention is as follows: 1~4 In any one of the above-mentioned inventions, the lubricant contains silicone oil, and the adhesive contains epoxy resin. This makes it possible to more reliably prevent the bristles from falling out or breaking, and also makes it difficult for adhesive to accumulate, allowing the brush to fit more smoothly into the groove of the brush base.

[0016] Claim 6 The invention is as follows: 1~5 In any one of the above-mentioned inventions, the bristles constituting the bristle bundle are characterized by having a generally wavy portion formed in the longitudinal direction or an uneven portion formed on the outer surface, which makes it easier to hold the adhesive inside the bristle bundle and more reliably prevents the bristles from falling out or breaking. Effect of the Invention

[0017] The brush invention of claim 1 can reliably prevent the bristles from falling out or breaking. Also, the brush can be smoothly fitted into the groove of the brush base. 1 The invention of the present invention can further prevent the bristles from falling out or breaking, and can stabilize the brush when it is fitted into the brush base.

[0018] Claim 1 The invention of claim 1 is capable of reducing the weight of the brush, shortening the manufacturing and disposal processes, and reducing costs. It is also possible to further prevent the bristles from falling out or breaking. 2The invention of claim 1 can increase the strength of the base. 3 The invention relates to an outer peripheral surface of the root side of the bristle bundle and Top surface of reinforcement This can further prevent adhesion pools from forming on the substrate.

[0019] Claim 4 The invention of claim 1 can increase the strength of the brush, and can further prevent the bristles in the center from falling out or breaking. 5 The invention of claim 1 can more reliably prevent the bristles from falling out or breaking, and can more smoothly fit into the groove of the brush base. 6 The invention of claim 1 makes it easier to hold the adhesive inside the bristle bundle, and more reliably prevents the bristle from falling out or breaking. [Brief description of the drawings]

[0020] [Figure 1] (a) is a perspective view of a brush according to the present invention; (b) is a perspective view of a brush according to the present invention viewed from the base side; [Diagram 2] (a) Cross section AA of Figure 1 (b) Cross section BB of Figure 1 [Diagram 3] FIG. 1 is a perspective view showing a state in which a brush according to the present invention is fitted to a brush base; [Figure 4] 1A to 1C are cross-sectional views showing another embodiment of a brush according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to this embodiment. Fig. 1(a) is a perspective view of a brush according to the present invention, and Fig. 1(b) is a perspective view of the brush as viewed from the base side. Fig. 2(a) is a cross-sectional view taken along line AA in Fig. 1, and Fig. 2(b) is a cross-sectional view taken along line BB in Fig. 1. A first embodiment of a brush according to the present invention will be described below with reference to these drawings.

[0022] The brush 10 of the present invention is a brush that fits into a groove formed in a brush base, and has a bristle bundle 2 formed by bundling multiple bristles 1, 1..., and a base 3 to which one end of the bristle bundle 2 is fixed and which fits into the groove of the brush base.

[0023] The inside 2b on the base side of the hair bundle is filled with adhesive 5. This reliably prevents the hair 1 from falling out or breaking. The adhesive 5 preferably contains an epoxy resin.

[0024] In addition, a lubricant 4 is applied to the outer peripheral surface 2a of the base side of the bristle bundle and to the upper surface 3a of the base 3. This makes it difficult for adhesive 5 to adhere and remain as adhesive puddles, allowing the brush to be smoothly fitted into the groove of the brush stand.

[0025] The procedure for applying the lubricant 4 and filling the adhesive 5 is as follows: First, the lubricant 4 is applied to the outer peripheral surface 2a of the base side of the hair bundle and the upper surface 3a of the base 3, and then a formwork is placed to cover the outer peripheral surface 2a of the base side of the hair bundle. The tip of a syringe filled with adhesive 5 is inserted into the center 2d of the hair bundle, and the adhesive 5 is filled into the gaps formed in the hair bundle 2.

[0026] The base 3 has a base 3b and a reinforcing part 3d formed to cover an outer peripheral surface 3c of the base and the outer peripheral surface 2a of the root side of the bristle bundle. As a result, one end 2c of the bristle bundle and the outer peripheral surface 2a of the root side are covered by the base 3b and the reinforcing part 3d, which further prevents the bristles 1 from falling out or breaking. In addition, the brush 10 can be stabilized when the brush 10 is fitted into the brush stand.

[0027] The bristles 1 constituting the bristles bundle 2 are made of thermoplastic resin, and the base 3 is formed by melting and bonding one end 2c of the bristles bundle. This makes it lighter than when metal fittings are used for the base, and shortens the manufacturing and disposal processes, thereby reducing costs. It also further prevents the bristles 1 from falling out or breaking. As will be described later, the present invention also includes a case where not the entire base 3 but only a part of the base 3 is formed by melting and bonding one end 2c of the bristles bundle.

[0028] Preferably, the height of the reinforcing portion 3d is at least twice the thickness of the base portion 3b. This allows the overall length of the brush 10 to be shortened and the strength to be increased. Although the bristle bundle 1 of the brush 10 in the first embodiment has a rectangular shape in a plan view, this is not limited thereto, and various shapes such as a circle, a star, or a triangle can be adopted.

[0029] An example of a manufacturing procedure for the brush 10 of the first embodiment will be described below. (1) First, the bristle material 1 is placed into a mold. (2) Next, an iron plate heated by a heater is brought into contact with the bristle bundle 2 from one side. (3) Next, the iron plate is slid to melt one end 2c of the bristle bundle with heat. (4) Next, the molten bristles flow into a groove (a portion forming the reinforcing portion 3d) provided at the inner end of the formwork. (5) Next, the iron plate is moved to the other side (excess bristles 1 are scraped off) and the iron plate is pressed against the bristles 1 from above to form the base 3b. (6) Next, after it is confirmed that the molten bristles are filled into the grooves forming the reinforcing portions 3d, the iron plate is removed and the bristles 1 are cooled. (7) Finally, burrs formed on the base portion 3b and the reinforcing portion 3e are cut off with a blade or the like, and the brush 10 is completed.

[0030] The base 3 has a cavity 6 that communicates between the outer surface and the inside, and this cavity 6 is filled with an adhesive 5. This makes it possible to increase the strength of the base 3.

[0031] As shown in Figures 2(a) and (b), the lubricant 4 is applied up to the vicinity of the filling surface of the adhesive 5. This further prevents adhesion pooling on the outer peripheral surface 2a of the base side of the bristle bundle and the upper surface 3a of the base. It is preferable that the lubricant 4 contains silicone oil, which makes it difficult for adhesion pooling to occur and allows the brush to fit more smoothly into the groove of the brush base.

[0032] 2(b), the filling surface of the adhesive 5 may be formed so that the center 2d side is higher than the outer peripheral surface 2a side of the bristle bundle. This increases the adhesive area on the center 2d side of the bristle bundle, thereby increasing the strength of the brush 10 and further preventing the bristles 1 on the center 2d side from falling out or breaking.

[0033] The hair 1 constituting the hair bundle 2 has a generally wavy portion 7 formed in the longitudinal direction. This makes it easier to hold the adhesive 5 inside the hair bundle 2, and more reliably prevents the hair 1 from falling out or breaking.

[0034] FIG. 3 is a perspective view showing the state in which the brush according to the present invention is fitted to the brush stand. In the brush stand 11, a plurality of brushes 10 are detachably attached to an annular base member 12. The base member 12 has an insertion hole 12a and a groove portion 12b formed on the edge of the insertion hole 12a. After the brush base 3 is fitted into the groove portion 12b and slid in the direction of the arrow, the brush 10 is fixed to the base member 12 by attaching a ring-shaped retaining member (not shown) to the inner peripheral side. Although the brush stand 11 is configured to fix a plurality of brushes 10, 10, ..., the brush 10 may be one. Here, if an adhesive pool is formed on the outer peripheral surface 2a on the root side of the bristle bundle of the brush 10 and on the upper surface 3a of the base, it becomes difficult for the brush to be fitted into the groove portion 12b of the base 3 and to slide in the direction of the arrow, but this problem can be solved by the present invention.

[0035] Fig. 4(a) is a cross-sectional view showing a brush of the second embodiment. In the brush 20 of the second embodiment, the base 23 is made of a resin different from that of the bristle bundle 2, and one end 2c of the bristle bundle is fixed with the resin of the base 23 to prevent the bristle 1 from falling out. Since no metal fittings are used in this brush 20, it is lightweight and easy to dispose of. In addition, the thickness of the base 23 can be reduced, and the thickness of the base member constituting the brush stand described above can be reduced. The other configurations are the same as those of the brush 10 of the first embodiment, so a description thereof will be omitted.

[0036] FIG. 4(b) is a cross-sectional view showing a brush of the third embodiment. In the brush 30 of the third embodiment, like the brush 10 of the first embodiment, the bristles 1 constituting the bristles bundle 2 are formed of a thermoplastic resin, and the base 33b of the base 33 is formed by melting and bonding one end 2c of the bristles bundle. Meanwhile, the reinforcing portion 33d is formed of a metal ring, and one end of this metal ring 33d is bonded to the base 33b. By adopting a metal ring for the reinforcing portion 33d, the area covering the outer peripheral surface 2a on the root side of the bristles bundle can be increased, and the occurrence of the bristles 1 being pulled out or broken can be reliably prevented. In addition, the bristles 1 constituting the bristles bundle 2 have an approximately wave-shaped portion 7 formed in the longitudinal direction, and since the bristles 1 contain abrasive grains, an uneven portion 8 is formed on the outer surface. This makes it easier to hold the adhesive 5 inside the bristles bundle 2, and the occurrence of the bristles 1 being pulled out or broken can be more reliably prevented. In addition, instead of the approximately corrugated portion 7, straight bristles may be used and the outer surface of the bristles may be formed with the uneven portion 8, which is also included in the present invention. The other configurations are the same as those of the brush 10 of the first embodiment, so a description thereof will be omitted.

[0037] Fig. 4(c) is a cross-sectional view showing a brush of the fourth embodiment. The brush 40 of the fourth embodiment is formed of a metal base 43 having a U-shaped cross section in which a base portion 43b and a reinforcing portion 43d are integrally formed, and one end 2c of the bristle bundle is inserted into a fixing hole 9 of the base 43 and fixed with an adhesive 5. This configuration allows the base 43 to be smoothly fitted into the groove of the brush stand. The other configurations are the same as those of the brush 10 of the first embodiment, so a description thereof will be omitted. [Industrial Applicability]

[0038] The brush according to the present invention can be attached to various types of equipment and used in various industrial and household products. [Explanation of symbols]

[0039] 1 Hair material 2 Hair bundle 2a Outer periphery of the base side 2b Inside of the base 2c one end 2d center 3, 23, 33, 43 bases 3a Top side 3b, 33b, 43b base 3c Outer surface 3d, 33d, 43d reinforcement part 4. Lubricants 5 Adhesive 6 Cavity 7. Wave-shaped section 8 Uneven part 9 Fixing hole 10, 20, 30, 40 Brushes 11 Brush stand 12 Base material 12a Insertion hole 12b Groove

Claims

1. A brush that fits into a groove formed in a brush base, The brush includes a bristle bundle formed by bundling a plurality of bristles, a base to which one end of the bristle bundle is fixed and which fits into a groove in the brush stand; The base has a base and a reinforcing portion formed to cover an outer peripheral surface of the base and an outer peripheral surface of the root side of the hair bundle, The bristles constituting the bristle bundle are formed of a thermoplastic resin, and the base or a part of the base is formed by melt-bonding one end of the bristle bundle, A brush characterized in that a lubricant is applied to the outer peripheral surface of the root side of the bristle bundle and the upper end surface of the reinforcing portion, and an adhesive is filled inside the root side of the bristle bundle.

2. 2. The brush according to claim 1, wherein the base has a cavity that communicates with the outer surface and the inside, and the cavity is filled with an adhesive.

3. 3. The brush according to claim 1, wherein the lubricant is applied up to the vicinity of the upper end surface of the filled adhesive material.

4. A brush as claimed in any one of claims 1 to 3, characterized in that the upper end surface of the filled adhesive is formed so that the central side is higher than the outer peripheral surface side of the bristle bundle.

5. 5. The brush according to claim 1, wherein the lubricant contains silicone oil and the adhesive contains epoxy resin.

6. The brush according to any one of claims 1 to 5, characterized in that the bristles constituting the bristle bundle have a substantially wavy portion formed in the longitudinal direction or a concave-convex portion formed on the outer surface.

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