JPS6237968B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a toothbrush.

[Conventional technology and its problems]

As a toothbrush, the brush bristles on the bristles are aggregated into a plurality of bristles, which are divided into a plurality of groups in the length direction of the bristles, and each bristles of each bristles aggregate has a fiber length, There is a type in which the ends of the hair are made to have different lengths so that they are stepped, and the longest fibers are aligned toward the center of the hair bundle assembly, and the shortest fibers are located on the outside, and each hair bundle is tilted toward the center ( Jitsukai 1977
−121765).

By the way, in the conventional toothbrush described above, the bristles of at least two or more bundles of bristles that are adjacent to each other in the longitudinal direction of the bristle bed are brought together to form relatively large chevron-shaped bristles, and the chevron-shaped bristles and valleys are alternately arranged. Therefore, when the toothbrush is held horizontally and the brush section is moved in the axial direction, the bristle bundles in each bristle assembly in the vertical row support each other and curve in the axial direction. However, when the toothbrush is moved up and down, it curves outward on both sides, no different from normal upright bristles, and becomes unusable soon.

An object of the present invention is to provide a toothbrush that can withstand long-term use without causing the bristles to curve even when the brush portion is moved not only in the axial direction but also in the direction orthogonal to the axis.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention arranges each flocked bristle bundle assembly into a column with one row for each two bundles oriented in the length direction at the center in the width direction of the brush flocking surface, and two bundles in the column. The toothbrush is made up of two rows of bundles crossing the center of each assembly.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, A is a toothbrush stand, and B is a brush part planted on the bristle-planting surface 1 of the stand A.

The brush part B is divided into four groups in the length direction of the flocked surface 1, and each flocked hair bundle aggregate 2a, 2b, 2
As shown in Fig. 3, each of the hair bundles 3 c and 2d has different fiber lengths so that the ends of the hair are stepped. The fibers b are arranged so as to be located outside the hair bundle group.

The bristle bundle assembly has a flocked form consisting of one vertical row c for every two bundles in the length direction at the center in the width direction of the flocked surface 1, and a horizontal row d for every two bundles crossing the center of this vertical row c. .

Also, as shown in the enlarged view of Fig. 4, the method of planting the bristles of each bristle bundle in different lengths so that the tips of the bristles are stepped is that the brush bristle bundle 3 is folded in half and the lengths of both bristles are different. It consists of a set of fibers e that are significantly different from each other, and a set of fibers f that are folded in half and have the same length on both sides and have a length that is intermediate between the long and short lengths of the fiber e. Flocking can be performed by an automatic machine by holding the bifold fibers f within the bifold fibers and making them into a bundle.

However, depending on the direction of the hair bundles, it is necessary to make the rows of hair transplanted at intervals, and to change the direction of the movement of the hair transplanted surface between the forward and reverse directions, or sideways between the forward and reverse directions.

〔effect〕

The toothbrush of this invention has the following effects.

(1) The hair bundles of each hair bundle assembly are arranged such that the long fibers are located in the center of the hair bundle assembly, and the short fibers are located on the outside of the hair bundle assembly, and each hair bundle is Since it is tilted toward the center of the bundle assembly, hold the toothbrush horizontally and move the brush part up and down, specifically from top to bottom against the teeth of the upper jaw.
The direction of movement is important for both methods of brushing, moving from the bottom to the top for the teeth in the lower jaw, and moving the brush holder lengthwise to brush the back teeth laterally or brushing the back surfaces of the teeth. The brush bristle bundle is supported by the rear brush bristle bundle, and the outer fibers do not curve outward with use as seen in conventional toothbrushes, making it durable for long-term use.

(2) Each hair bundle aggregate is a set of every two bundles in a vertical row and every two bundles in a horizontal row, and is shaped like a "cross" in which the hair bundles of every two bundles intersect across the center of every two bundles in the vertical direction. Therefore, each hair bundle in the vertical and horizontal rows supports each other with other hair bundles in the aggregate, and is supported not only in the vertical and horizontal directions but also in the diagonal direction.
The above effect can be further increased.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the main parts of the toothbrush, FIG. 2 is a plan view of the same, FIG. 3 is a left side view of the same, and FIG. 4 is a further view of the same. FIG. 3 is an enlarged vertical cross-sectional view of main parts. A...stand, 1...flocking surface, B...brush part, 2
a, 2b, 2c, 2d...Flocked hair bundle aggregate, 3...
...hair bundle, a...longest fiber, b...shortest fiber, c...
...vertical column, d...horizontal column.

Claims (1)

[Claims] 1 Brush hair bundles on the flocked surface are aggregated into a plurality of hair bundles, which are divided into a plurality of groups in the length direction of the flocked surface, and each hair bundle of each flocked hair bundle aggregate has a fiber length of A toothbrush having different lengths and shorter tips so as to have a step-like shape, the longest fibers being aligned toward the center of the bristle bundle assembly, and the shortest fibers being aligned on the outside, and each of the bristle bundles being inclined toward the center. The flocked bristle bundle aggregate consists of a vertical row of every two bundles facing in the length direction at the center in the width direction of the brush flocking surface, and a row of every two bundles that crosses the center of the aggregate of every two bundles in the column. A toothbrush comprising a horizontal row.