JPH09252844A - Cap for inter dental brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To invariably firmly insert a cap for an inter-dental brush to a handle, apply sufficient holding power to the cap, safely and sanitarily hold the brush without deforming or damaging it, and reasonably and smoothly insert or remove the cap. SOLUTION: A substantially U-shaped handle neck section coupling notch section 2 is provided at one side section of the opening end of a cylindrical brush storage section 1 to be inserted with the brush section (c) of an inter-dental brush having the brush section (c) at a handle bent tip section (b) bent at the crossing angle against the handle axis of a handle (a). The interval between the opposite side walls of the handle neck section coupling notch section 2 is made smaller than the handle neck section width. When a cap is inserted to the handle (a), a hook section is kept in contact with the handle neck section without causing displacement or without being slipped apart, the brush is kept at the prescribed position, and the brush can be safely protected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interdental brush for cleaning between teeth, and more particularly to a cap used for a handle type interdental brush.

[0002]

2. Description of the Related Art Conventionally, an interdental brush is often used as a small portable brush that easily fits in a pocket or a purse, and these small brushes are usually a handle and a brush integrated with the handle. , And two parts with a cap that is put over the brush.
The handle-type interdental brush has a twisted wire brush protruding straight from the end of the handle, and when brushing into the tooth gap during brushing, the brush must be put in the back of the mouth. However, it is known that the brush may come out from the gap during brushing and puncture the gums or teeth, or the wire brush may bend, making it difficult to clean between the teeth. Since the upper wire brush is often bent to a convenient brushing angle for use, an easy-to-use interdental brush has been proposed in which the handle tip is bent at a substantially right angle and a brush portion is provided at the tip.

[0003]

However, an interdental brush of this kind is used as a cover for covering a brush that is still wet after use, or as a cover that can be covered with the brush in order to protect the brush portion and prevent contamination during handling and storage. As the cap, a cylindrical cap having a brush accommodating part into which a brush part can be fitted is used, but the cap may slip off the handle or be displaced, and is a cap type to be fitted to the handle tip part. , The handle tip must have a diameter larger than the brush diameter, and this is a problem in terms of handling as a cleaning tool. This is not desirable, and if the mating push-in is too strong, the brush part cannot be held properly in the cap and the brush may be deformed or damaged. If the fitting structure is configured to increase the friction of the opening end of the tubular cap, the fitting and removal operation does not go smoothly and the handling becomes complicated, and since the opening end is closed by the handle, it is difficult to dry and hygienic is preferable. There was a problem such as not being.

The present invention is intended to eliminate these conventional drawbacks, so that the cap can always be fitted tightly into the handle, and the cap has a sufficient holding force.
An object of the present invention is to provide a cap for an interdental brush that can be safely and sanitarily maintained without deforming or damaging the brush, and that can be smoothly engaged and disengaged in a simple and inexpensive form. It is what

[0005]

According to the present invention, a brush portion of an interdental brush having a brush portion at a handle bending tip portion bent at an angle intersecting with a handle axis of a handle can be inserted. A substantially U-shaped handle neck fitting notch portion having a gap is provided on one side of the opening end of the cylindrical brush accommodating portion, and a distance between opposing side walls of the handle neck fitting notch portion is smaller than a handle neck width. It is used as a stop.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In an embodiment of the present invention, a gap is formed at an opening end of a cylindrical brush accommodating portion into which a brush portion of an interdental brush having a brush portion at a bent tip portion of a bent handle can be inserted. By providing a substantially U-shaped handle neck fitting notch with the handle neck fitting into the gap of the handle neck fitting notch, the opposite side walls of the handle neck fitting notch are locked. The part is opened and the brush part is smoothly inserted into the brush storage part, and the return of the locking part provides a sufficient holding force so that the brush part can always be fitted tightly. Then, when the cap is fitted into the handle, the locking part does not come into contact with the handle neck and the position does not shift, it does not slip off and the brush is kept at a predetermined position in the cap with the stopper rib to safely protect the brush. Moreover, even if the cap is put on, the brush at the handle tip is located facing the opening end and has good air permeability and can be dried properly after using the brush, keeping the brush clean and hygienic It's easy.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Explaining an embodiment of the present invention with reference to the examples of FIGS. 1 and 2, a brush portion c is provided on a handle bending tip end portion b bent at an angle intersecting with a handle axis line of a handle a. A substantially U-shaped handle neck fitting notch 2 having a gap is provided at one side of the open end of a cylindrical brush housing 1 into which the brush part c of the interdental brush can be fitted. The interdental brush cap 4 is formed as a locking portion 3 in which the width between the opposing side walls of the portion 2 is smaller than the width of the handle neck portion.

The cap 4 is made of polypropylene resin or the like, and the handle neck fitting notch 2 which also serves as a sheath receiver is a substantially U-shaped recess having an open upper surface. The locking portions 3 and 3 formed in the communicating state and opposed to each other on both side walls are expanded by elastic force so that the handle neck portion can be easily fitted and removed. Further, the stopper rib 12 raised on the inner surface of the side wall of the handle neck fitting notch 2 is provided so as to abut against the handle tip b, so that the handle can be prevented from coming off and the positioning and holding can be appropriately performed, and the cap 4 It is designed so that the cap can be easily removed and operated while picking up the handle and raising the handle a.

The brush housing portion of the cap 4 is a cylindrical member whose one end, that is, the bottom is closed, and the other end is an open opening end 11, from which the brush portion c is formed. Is inserted. If desired, one or more holes can be provided in the bottom of the cap to ensure proper draining or drying after using the brush. In addition, the locking portion 3 that is raised on the inner surface of the handle neck fitting cutout portion reduces the holding gap for fitting the handle neck portion, and limits the length for fitting the cap to the end portion of the handle properly, and the brush portion. The cap 4 is prevented from shifting upward by the cap 4. In addition, the frictional force of the engaging portion 3 gives a sufficient holding force so that the engaging portion 3 can always be fitted tightly, and when the cap 4 is fitted in the handle a, the brush is kept clean and hygienic. Further, it is also effective to fit and position the outer surface of the cap 1 or the inner surface or both surfaces of the protrusion d protruding from the neck portion of the handle.

The present invention also includes the following characteristic configuration. An interdental brush cap in which a stopper rib for positioning with which the tip of the handle abuts is provided on the inner circumference of the brush housing.

[0011]

According to the present invention, a cylindrical brush into which a brush portion of an interdental brush having a brush portion at a bent end portion of the handle bent at an angle intersecting with a handle axis of the handle can be inserted. A substantially U-shaped handle neck fitting notch having a gap is provided on one side of the opening end of the storage part, and a space between the opposing side walls of the handle neck fitting notch is made to be a locking part having a smaller handle neck width. By doing so, the cap can be fitted tightly to the handle at all times, and the cap has sufficient holding force to keep the brush safe and sanitary without deforming or damaging the brush, and it is also possible to perform the fitting and removing operation. In addition to smoothness, there is no slippage when the cap is fitted into the handle, and the locking part does not come into contact with the neck of the handle to cause positional displacement. You can keep the brush in place and protect it safely, and even if you cover the cap, the brush part at the tip of the handle faces the opening end and has good air permeability, and you can also dry it properly after using the brush. , Has a practical effect such that the brush is kept clean and hygienic and easy to handle.

[Brief description of drawings]

1 shows an embodiment of the present invention, (a) is a longitudinal sectional view,
(B) is the top view, (c) is a rear view.

FIG. 2 is a vertical cross-sectional view showing one usage state of the example of FIG.

[Explanation of symbols]

 1 Brush Storage Part 2 Handle Neck Fitting Notch 3 Locking Part 4 Cap 11 Open End 12 Stopper Rib a Handle b Handle Bend Tip c Brush Part

Claims (1)

[Claims] 1. An opening of a cylindrical brush accommodating portion into which a brush portion of an interdental brush having a brush portion at a bent end portion of the handle bent at an angle intersecting with a handle axis of the handle can be inserted. It is characterized in that a substantially U-shaped handle neck fitting notch having a gap is provided at one end portion, and a space between opposing side walls of the handle neck fitting notch is a locking portion smaller than a handle neck width. Interdental brush cap.