Radial vane for tooth brush, tooth brush using the same, and method and device for manufacturing the radial vane for the tooth brush

Abstract

A 360 DEG type tooth brush having a brush head formed by axially stacking disk type radial vanes (1). The arrangement pitch of the radial vanes (1) is increased to appropriate a bristling density. Spacers are not used between the radial vanes (1) to increase productivity. The state of sanitation is improved. For these purposes, an annular projection (3) is formed on one or both of the surfaces of the annular weld part (2) of the radial vane (1). The annular projection (3) is formed simultaneously with the weld part (2) in a welding step for manufacturing the radial vane (1) by radially expanding a yarn bundle in all directions and welding the center part to the weld part.

Description

technical field [0001] The present invention relates to a disc-shaped radial bristle used for a brush head of a toothbrush, a 360-degree toothbrush having a cylindrical radial head using it for a brush head, and a method for manufacturing the radial bristle for the toothbrush and manufacturing device. Background technique [0002] As a kind of toothbrush, such a 360-degree type toothbrush described in Patent Document 1 is known. A cylindrical radial brush head is provided at the front end of the handle of this toothbrush. This brush head can be manufactured by the method described in Patent Document 2, for example. [0003] Patent Document 1: JP Unexamined Patent Publication No. Hei 9-168427 [0004] Patent Document 2: JP Unexamined Publication No. 2003-220080 [0005] In the method described in Patent Document 2, disc-shaped radial bristles are produced, wherein a plurality of filamentary materials protrude radially from the center to the outer peripheral side, and are ...

AI Technical Summary

Problems solved by technology

However, there is a problem that the increase in cost due to the increase in the number of parts and the increase in assembly man-hours due to the use of spacers is very large

In addition, there is also a problem that the hygienic condition deteriorates due to the mixing of foreign matter that occurs with the insertion of the spacer and the increase in the gap caused by the interposition of the spacer.

[0015] And, as another problem, there is the trouble of using multiple tools differently before making radial bristles

That is, it is necessary to push away the tow a based on the wire developing jig d, fix based on the wire pressing member e, weld based on the welding head f, and remove the center part based on the cutting punch g, due to other tools. The separate process caused by the large number of processes

Therefore, there is a problem that the productivity is not improved, and the product price is very high.

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