JPH0310739Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a brush head for attachment to a dental unit or equivalent equipment having a hexagonal drive pivot into which the brush head can be press-fitted and secured.

[Background technology]

Brushes of this type are used in particular for cleaning teeth on a daily basis and are also used by dentists and nurses in dental clinics. To drive such brushes, dental units or battery-powered devices are used and are commonly referred to as electric toothbrushes.

Conventionally known brushes of this type have a metal base that tightens around the ends of the fiber bundle.
Alternatively, it may be assembled entirely by gluing the individual fibers together before insertion into the holder.

However, these assemblies do not provide any protection against loosening of the individual fibers, and such loosening is extremely inconvenient for the user. Also, known foundations are very unstable.
This is because known foundations tend to be shaky;
This is because this means that it becomes difficult to control the brush in a short period of time. Additionally, there is a significant risk that the brush may become loose from the pivot and thus fall into the user's throat.

[Purpose and outline of the idea]

It is an object of the present invention to overcome the above-mentioned drawbacks of the known brushes, the object being that the brush head consists of a number of substantially parallel fibers, one end of which is firmly welded together to form a brush. The weld is accomplished by a brush having sufficient rigidity to be removably attached directly to the drive pivot.

By using such fibers that have thermoplasticity and can be melted at one end, it is possible to achieve fixation of all the fibers with extremely high reliability. This means that there is no risk of the individual fibers coming undone when the brush is used.

Additionally, high stability is achieved because the fibers are assembled with fused tips that secure the individual fibers together.

It is also advantageous to have a large extension of the fused portion so that a hexagonal base hole for the drive pivot can be arranged in the base, as stated in claim 2 of the patent application. This results in high stability and brush retention.

Furthermore, the scope of claims for utility model registration, paragraphs 3 to 5,
As described in Section 1, it is advantageous to design the ends of the brushes with different shapes to suit different requirements for the brushes.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings.

The drawings show three preferred embodiments of the invention. 1, 4, 7 and 10, substantially cylindrical brush heads are shown, and FIGS. 2, 5, 8 and 1.
FIG. 1 shows a brush head with a short tip, and FIGS.
The illustration shows a brush head with a long tip.

All brush heads are made of fiber bundles 1 of synthetic thermoplastic material.

At the ends of the fiber bundles, these fibers are welded together to form a base 5, which has a central base hole 6 with a hexagonal cross section as shown in Figures 10-12. It is located. This provides effective welding of all the fibers within the bundle and also allows for a firm hold of the brush head on the hexagonal drive pivot inserted into the hole 6.

After welding, the fibers are cut to the desired length and shortened, and the fiber bundle is shaped as desired, for example by cutting off a large or small portion of the fibers at the front. In this way it is possible to design any desired external shape, the drawings respectively showing a short tip 3 and a long tip 4.

In addition, Fig. 1, Fig. 4, Fig. 7, and Fig. 10
In the brush head shown in the figure, only the central portion of the fibers 1 at the tip of the brush head are cut shorter than the other portions to form holes 2.

However, it is within the scope of the present invention to design the fibers into any desired shape to suit any anticipated requirements.

Although a hexagonal drive pivot is shown in this specification and drawings, it is of course within the scope of the present invention to use any other type of drive pivot.

According to the invention, one end of the fibers of the brush head are firmly welded together to form a brush, the weld being sufficient for direct removable attachment to, for example, the drive pivot of a dental unit. Since the brush head of the present invention can be directly attached to and detached from the drive pivot of a dental unit, there will be no problems such as damage to the welded part or decomposition of the fibers. Therefore, the brush head of the present invention is extremely convenient and useful for use as a so-called electric brush by directly attaching it to an external rotary drive means such as a drive pivot.

Such advantages of the present invention are unique to the present invention; for example, like the dental plaque removal and gingival pus surgery tools disclosed in Japanese Patent Application Laid-open No. 57-86348, the device can be simply held in the patient's own hands. The usage, function, etc. are fundamentally different from those used. Furthermore, the brush head of the present invention is completely different in structure, function, and effect from the brush head of the above-mentioned publication, in which the inner fiber layer is exposed or decomposed when the outer annular shell layer comes off. be.

[Brief explanation of the drawing]

1-3 are respectively plan views of three embodiments of the brush head according to the present invention, FIGS. 4-6 are side views of the brush, FIGS. 7-9 are bottom views of the brush, and FIG. 12 are cross-sectional views of the brush taken in the directions of FIGS. 7-9, XI--XI, and XII--XII, respectively. 1...Fiber, 3...Short tip, 4...Long tip, 5...Base, 6...Hole.

Claims (1)

[Claims for Utility Model Registration] (1) A brush head for attachment to a dental unit or equivalent equipment having a hexagonal drive pivot into which the brush head can be press-fitted and fixed, the brush head having a large number of substantially parallel brush heads. It consists of fibers 1 extending from one side to the other, the ends 5 of said fibers being firmly welded together to form a brush, the weld 5 having sufficient rigidity to be releasably attached directly to said drive pivot. A brush head comprising: (2) The brush head according to claim 1, wherein a hexagonal hole 6 is located in the welded portion 5 around the long axis of the brush head. (3) The brush head according to claim 1 or 2, wherein the brush 1 has a substantially cylindrical shape (FIG. 6). (4) A brush head according to claim 1 or 2, characterized in that the brush 1 tapers toward the end to form a short tip 3 (FIG. 5). (5) A brush head according to claim 4, characterized in that the brush 1 is extended to form a long tip 4 (FIG. 6).