JPH09224745A - Cap for inter-tooth brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the cap to be always fitted snugly on the handle, to provide the cap with a sufficient holding force, to retain a brush safely and hygienically without deforming or damaging it, and to facilitate the attaching/detaching operation naturally and smoothly. SOLUTION: In an inter-tooth brush in which a brush part (c) is attached to the bent tip end (b) of a handle (a) bent at an angle crossing the axial line of the handle, a nearly U-shaped receiving part 2 for the handle neck is provided roughly orthogonally on the opening end side of a tubular storing part 1 in which the brush part (c) of the inter-tooth brush is fitted. In this case, the space between the oppositely facing side walls of the handle neck receiving part 2 is made smaller than the neck width of the handle; consequently, with a cap 4 fitted on the handle (a), an engaging rib 3 comes into contact with the handle neck, thereby holding the brush at a prescribed position in the cap 4 without positional deviation nor slipped detachment, and protecting the brush safely.

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 portion into which the brush portion can be fitted is fitted and used, but since the cap has an inner diameter larger than the maximum diameter of the brush portion, the tip of the brush handle for fitting the cap is large. It becomes difficult to operate when brushing due to the large diameter, and there is a risk that the mating cap will slip away from the handle to insert and remove in the axial direction, or be inserted deeply or misaligned. In addition, if the push-in is strong, the brush part cannot be held properly inside the cap and the brush is easily deformed or damaged. When fitting structure for increasing the friction, fit de operation to be complicated handling not go smoothly, the opening end had such problems drying hardly hygienic undesirable because it is closed by the handle.

The present invention is intended to eliminate these drawbacks of the prior art, and the cap can always be fitted tightly into the handle so that the cap has a sufficient holding force to prevent the brush from being deformed or damaged. It is an object of the present invention to provide a cap for an interdental brush that can be safely and hygienically maintained and that can be smoothly fitted and removed in a simple and inexpensive manner.

[0005]

According to the present invention, a brush portion of an interdental brush having a brush portion can be inserted into a handle bending tip portion bent at an angle intersecting with a handle axis line of the handle. A substantially U-shaped handle neck receiving portion is provided substantially orthogonal to one side of the opening end of the cylindrical brush accommodating portion, and a space between the opposing side walls of the handle neck receiving portion is smaller than a handle neck width.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the embodiments of the present invention, one end of an open end of a cylindrical brush accommodating portion into which a brush portion of an interdental brush having a brush portion at a bent handle bending end can be fitted. A substantially U-shaped handle neck receiving portion is provided substantially orthogonal to each other, and locking ribs are projected on the inner surfaces of the opposite side walls of the handle neck receiving portion so that the handle neck portion can be applied to the handle neck receiving portion. By inserting the brush neck, the opposite side wall of the handle neck receiving portion is widened, the brush portion is smoothly inserted into the brush housing portion, and a sufficient holding force is provided so that the brush portion can always be fitted tightly. Then, when the cap is fitted into the handle, the locking rib will not come into contact with the handle neck and the position will not be displaced, and it will not slip off and keep the brush in the predetermined position in the cap to protect the brush safely. In addition, even if the cap is put on, the brush at the tip of the handle 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 and easy to handle. Is. In addition, since the handle is held by the handle neck receiving portion of the cap, the handle has a degree of freedom to reduce the diameter and size of the tip end portion, which can be easily operated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the examples of FIGS. 1 to 3. A handle bending tip portion b bent at an angle intersecting the handle axis of a handle a is provided with a brush portion c. Further, a substantially U-shaped handle neck receiving portion 2 is provided substantially orthogonal to one side of the opening end of the cylindrical brush accommodating portion 1 into which the brush portion c of the interdental brush can be fitted. The space between the opposing side walls is formed by narrowing the width smaller than the width of the neck portion of the handle, or the interdental brush cap 4 is provided with the locking rib 3 projecting on the inner surface of the side wall.

The cap 4 is made of polypropylene resin or the like, and the handle neck receiving portion 2 also serves as a sheath receiving portion.
Is a substantially U-shaped wall with an open upper surface, and the opening end 1 of the brush storage unit 1
One side of 1 is integrally formed so as to be substantially orthogonal to the one side in a communicating state, the other end 12 is a handle lead-out opening end, and both opposing side walls are expanded by elastic force so that the handle neck portion can be easily fitted and removed. The space between the side walls of the handle neck receiving portion 2 may be smaller than the width of the handle neck portion, or the locking ribs 3 raised on the inner surface of the side wall may be used to reduce the width, and the locking ribs 3 are cylindrical. It is provided so as to be inclined toward the brush storage section 1 side so that the handle can be properly prevented from coming off and the positioning and holding thereof can be properly performed, and the cap 4 can be picked up to raise the handle a and the cap can be easily removed and operated. There is.

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 may be provided in the bottom of the cap to ensure proper draining or drying after using the brush. further,
The locking rib 3 raised on the inner surface of the handle neck receiving portion reduces the holding gap for fitting the handle neck portion, and limits the length of fitting the cap properly to the end portion of the handle, and the brush portion c serves as a cap. 4 is prevented from shifting upward. Further, the frictional force of the locking ribs 3 provides a sufficient holding force so that the ribs 3 can be fitted tightly at all times, and when the cap 4 is fitted in the handle a, the brush is kept clean and hygienic. In addition, since the handle is held by the handle neck portion receiving portion of the cap, there is a degree of freedom to reduce the diameter and size of the handle tip portion, which is effective.

The locking rib 3 provided on the cap 4 is a raised portion corresponding to the side surface of the handle neck, and the locking rib is brought into contact with the raised portion of the handle neck as necessary for positioning. Alternatively, instead of the raised portion, a stopper type may be used as a locking concave portion that fits with the protrusion of the handle neck portion. Further, a stopper that abuts the handle neck portion may be provided on the inner surface of the cap 4 so as not to shift in the handle axial direction. It is considered that the protection of the brush portion c is safe as a form of positioning regulation.

[0011]

According to the present invention, a cylindrical brush into which a brush portion of an interdental brush having a brush portion at a handle bending tip portion bent at an angle intersecting the handle axis line of the handle can be fitted. A substantially U-shaped handle neck receiving portion is provided substantially orthogonal to one side of the opening end of the storage portion, and the distance between the opposing side walls of the handle neck receiving portion is made smaller than the handle neck width, so that the cap is always attached to the handle. It can be fitted tightly, the cap has sufficient holding power, the brush can be kept safe and hygienic without being deformed or damaged, and the fitting / removing operation can be smoothly performed. In addition, when the cap is fitted into the handle, the locking rib does not come into contact with the neck of the handle to prevent displacement and keep the brush in place in the cap without slipping away. Can protect the brush to all,
Moreover, even if the cap is put on, the brush at the tip of the handle is located facing the opening end and has good air permeability, it can be dried properly after using the brush, the brush is kept clean and hygienic, and it is easy to handle It has the above effect.

[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 an enlarged cutaway side view taken along line AA of FIG.

FIG. 3 is a vertical cross-sectional view showing one usage state of the example of FIG.

[Explanation of symbols]

 1 Brush Storage Section 2 Handle Neck Receiving Section 3 Locking Rib 4 Cap 11 Opening End 12 Other End a Handle b Handle Bending Tip c Brush Section

Claims (2)

[Claims] 1. An opening of a cylindrical brush accommodating portion into which a brush portion of an interdental brush having a brush portion can be fitted at a bent end portion of the handle bent at an angle intersecting with a handle axis line of the handle. An interdental brush cap, characterized in that a handle U-shaped neck receiving portion having a substantially U-shape is provided at one end side substantially orthogonally, and a space between opposing side walls of the handle neck receiving portion is smaller than a handle neck width. 2. The interdental brush according to claim 1, wherein the handle neck receiving portion is provided with locking ribs projectingly provided on the inner surfaces of the opposing side walls, which are inclined toward the cylindrical brush housing portion side. For cap.