JPH0490709A - Brush - Google Patents

Abstract

PURPOSE:To obtain a brush of which the bristles are closely implanted on the brush body by making it easy to wedge flat wires and by eliminating a cracking phenomenon at implantation, by a method wherein at a bristle-implanting part, a base part for implanting the bristles and a head part for holding the base part are formed of materials different from each other; and the base part is formed of a synthetic resin with a shock resistance, containing fibers or filler with an abrasion resistance, and bristle-implanting holes are arranged and formed; and on each of the holes, a guide slit for passing a flat wire is provided. CONSTITUTION:At a bristle-implanting part 1, a base part 1, for implanting bristles and a head part 12 for holding the base part are formed of materials different from each other. This base part 1, is composed of a synthetic resin with a shock resistance, containing fibers or filler with an abrasion resistance, and bristle-implanting holes 2 are arranged and formed on the base part. On each of the holes, a guide slit for passing a flat wire 4 is provided within the range of 0 to 180 deg., and hence the title brush is made easy to mount the flat wire 4 on the base part 11. For the bristle-implanting hole 2, a peripheral part 21, at which the circumference of the hole on the surface side to be implanted is chamfered in a taper shape or in a quarter-round shape, is provided and it is made easy to wedge the flat wire 4, and a guide slit 5 for passing the flat wire 4 is made narrower than the thickness of the flat wire used. In this way, the production cost of the title brush can be reduced and the durability thereof can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to toothbrushes, podibraso, hairbrushes, and other brushes.

[Conventional technology]

Generally speaking, brushes are installed on a bristle-planting table with a flat bristle-planting surface, and the brushes are inserted into the bristle-planting holes of this bristle-planting table using a flat wire and the bristles are secured using the flat wire. is frequently used.

In the case of hair transplantation in which the hair is fixed using a flat wire with this conventional brush, depending on the material selection of the brush handle including the hair transplantation stand, cracks may occur during the transplantation, resulting in a decrease in quality and the occurrence of defective products. This tendency is strong in dense bristle brushes with small dimensions, so if a resin grade with high impact resistance is selected as a material to prevent this cracking phenomenon during flocking, the cost will be high, so we have to use different material molding technology. It is known that the bristle part is molded with an impact-resistant resin and the other parts are molded with another resin that satisfies the quality of the brush handle in order to achieve denser bristle density and cost reduction.

[Problem to be solved by the invention]

However, with brushes whose flocked parts are made of this impact-resistant resin, the area around the bristle holes is made of highly impact-resistant material, making it difficult for the flat wires to enter the bristle holes. However, there is a problem in that the flocked needles are likely to break, and since the flocked part and the other handle parts are made of different materials, it is difficult to fuse them together. It was difficult to select the material, and methods such as undercutting had to be used to ensure complete bonding, creating a problem around the flocked area that was unnecessary for the brush function.

The present invention aims to solve these conventional problems, and makes it possible to easily drive a flat wire, eliminate the cracking phenomenon during flocking, and create a dense bristle brush, which ensures reliable bristles and prevents the brush from coming off. The purpose of the present invention is to provide a brush at a low cost, which is difficult to maintain, has a short flat wire for brush stop, provides a flocked part of good quality, and has significantly improved durability.

[Means to solve the problem]

The present invention provides a brush in which bristles are fixed with flat wires for each of a plurality of tuft holes arranged in the tuft part, and
The flocking part includes a flocking base part and a head part holding the flocking base part made of different materials, and the flocking base is made of an impact-resistant synthetic resin containing wear-resistant fibers or filler, This brush is characterized in that the tufting holes are provided with guide slits for the passage of the flat wires.

〔Example〕

To explain the present invention with reference to FIGS. 1 to 3 of an embodiment in which the present invention is applied to a toothbrush, each brush 3 is connected with a flat line 4 for each of a plurality of bristle holes 2 provided in a bristle portion l at one end of a handle portion 10 of a toothbrush. In the brush that has been planted by stopping, the flocking part 1 is made of different materials, and the flocking base part 1 and the head part 12 holding the flocking base part 11 are made of different materials, and the flocking base l,
is made of impact-resistant synthetic resin containing abrasion-resistant fibers or fillers, and is formed with an array of tufting holes 2, in which a guiding thrust 5 for the passage of the flat wire 4 is provided in the range of 0 to 180 degrees. A highly impact-resistant flocked base 1. The flat wire 4 makes it easy to install the brush.

In this case, the flocked part l is AS, ABS, PP,
P.C.

PEP, CP, PMMA, styrene resin, propionate resin, etc. are selected and used, and these are coated with 10 wear-resistant fibers such as metal fibers, carbon fibers, or glass fibers, for example, 5-15μ in thickness and 80-300μ in length. Flocked base 1. Mixed with ~30% by volume as an impact-resistant synthetic resin. It is integrally formed with a head portion 1□ made of a different synthetic resin.

For example, for the flocked part L, the flocked base part L is made of PP resin that contains metal fibers and has improved impact resistance, and the other parts are made of PP resin, which is the base resin of the flocked part, to ensure a perfect bond. Head part 1. Consideration will be given to reducing unnecessary parts by merging them.

The tufting hole 2 has a periphery 2. The opening and closing of the hole on the tufting surface side is chamfered into a tapered or rounded shape. I have a flat 1l
A4 size can be easily inserted, and the guide slit 5 through which the flat wire 4 passes is narrower than the thickness of the flat wire used.

The flocked base part II is fitted into a fitting hole 6 or a fitting recess formed in the head part 12, and is bonded and integrated by ultrasonic, thermal welding, or adhesive bonding means. Alternatively, it may be constructed by two-color molding if necessary.

In the example shown in FIG. 4, a flocking hole 2 is provided through the flocking base part 11, and a large diameter hole 2□ having a diameter equal to or longer than the width of the flat line 4 is provided on the bottom surface opposite to the flocking surface. The fitting part is flat wA4, and has a structure that prevents it from coming out.The head part 1.
It is fitted into the fitting hole 6 to form the flocked part 1.

In the example shown in FIG. 5, a fitting hole 6 penetrating the head portion 12 is provided, and a flocking base portion l is provided in an engaging portion 7 on the inner peripheral surface of the fitting hole 6.
It is designed to be easy to manufacture and hard to come off by locking the outer circumferential surface of the ring and fitting it into the body.

〔Effect of the invention〕

The present invention provides a flocking unit in which a flocking base part and a head part holding a part of the flocking are made of different materials, and the flocking base is made of an impact-resistant synthetic resin containing wear-resistant fibers or fillers. , and the tufting holes are arranged in an array, and the tufting holes are provided with base circular slits for the passage of the flat wire, so that the tufting is easy, the flat wire can be driven in smoothly and safely, and the cracking phenomenon during the tufting is prevented. The bristles are secure, there is no risk of quality deterioration, and there is no risk of quality deterioration, and there is no possibility of defective products.It is also easy to make a dense bristle brush, the flat wire can be shortened, and the bristle holes can be made less likely to break. Furthermore, since impact-resistant resin is used only in the flocked portion, costs can be reduced and the durability of the easy-to-use brush can be improved, which has practical effects.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a side view, FIG. 2 is a partially enlarged vertical sectional view, FIG. 3 is a plan view thereof, and FIGS. 4 and 5 are respective examples of other embodiments. FIG. 2 is an enlarged longitudinal cross-sectional view of the hair transplantation section of the hair transplantation section before hair transplantation. 1... Flocking part, 11... Flocking base part, 12...
Head part, 2... tufting hole, 2. ...Periphery, 2□...
- Large diameter hole, 3... Brush, 4... Flat wire, 5... Guide slit, 6... Fitting hole, 7... Locking part.

Claims (4)

[Claims] (1) In a brush in which a brush is implanted by fixing the bristles with a flat line for each of a plurality of tuft holes arranged in the tufting part, the tufting part is divided into a bristle base part and a head part that holds the tuft base part. is made of different materials, the flocking base is made of impact-resistant synthetic resin containing wear-resistant fibers or fillers, and the flocking holes are arranged in an array, and the flocking holes are provided with guide slits for the passage of the flat wire. A brush characterized by: (2) The brush according to claim 1, wherein the tufting hole has a tapered chamfered periphery around the hole on the tufting surface side. (3) The flocking hole is a through hole penetrating through the flocking base, and has a large diameter hole having a diameter equal to or longer than the width of the flat wire on the bottom surface opposite to the flocking surface. The brush described in 1 or 2. (4) Claim 1, wherein the flocked base part is fitted into a fitting hole or a fitting recess formed in the head part, and is integrally joined by ultrasonic, thermal welding, or adhesive bonding means. , 2 or 3.