JPH0350735Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an interdental cleaning brush, and more specifically, to an interdental cleaning brush that is durable, easy to operate, and has an excellent cleaning effect. .

[Conventional technology]

Conventionally, interdental cleaning brushes used to remove plaque and food residue accumulated between teeth have been made by implanting hairs at the tip of a wire to form a brush, and the proximal end of the brush is not flexible. One known is one that is embedded in the handle body.

By the way, when using an interdental cleaning brush, the proximal end of the wire must be bent frequently because the bristles must be positioned at the cleaning site, and therefore bending stress is repeatedly applied to the bent portion of the wire.
During brushing, vibrations from brushing are propagated to the bent portion, so stress is concentrated at the bent portion, and as a result, the wire may break due to metal fatigue during use. For example, Utility Model Application Publication No. 180014/1983 was devised to solve these problems. As shown in Fig. 6, the base end side of the brush part b embedded and supported in the tip of the handle body a is coated with a flexible synthetic resin c.
It is configured to do this. By coating the wire with a flexible synthetic resin, it is possible to alleviate the bending stress that is applied to the wire during bending and brushing, and as a result, the number of wire breakage accidents during use is drastically reduced. At the same time, the durability of the interdental cleaning brush was significantly improved.

[Problem that the invention attempts to solve]

However, in this interdental cleaning brush, as shown in FIG. 6A, the flexible member covering the wire is circular in cross section with the wire at the center.
Since the thickness of the wire is the same all around the wire, the bent brush tends to return to its original shape due to the elastic restoring force of the synthetic resin, thus maintaining the bent position of the brush. It is difficult to position the cleaning area,
There was also the problem of not applying enough force when brushing. In addition, since the tip of the covered part is tapered, especially when cleaning bridge parts such as dentures, the brush part may go into the lower part of the bridge too deeply than necessary, and the brush part may not be able to reach the bottom of the bridge. There have also been cases where it has become stuck at the bottom and cannot be removed. Furthermore, since the wire located at the bent portion is completely covered, the condition of the wire, such as the presence or absence of breakage, cannot be visually observed, and there is also the problem that it is impossible to know when to replace the wire.

[Means for solving problems]

The present invention was developed in view of the current situation, and it is possible not only to prevent stress concentration on the wire and increase the durability of the interdental cleaning brush, but also to maintain a bent posture. It is an object of the present invention to provide an interdental cleaning brush that allows easy positioning of the tip of the brush portion to the cleaning site and enables powerful brushing. The gist of the present invention, which has achieved these objectives, is that a pair of flexible struts, which are integrally formed with the handle body, are placed at a certain distance from the wire at the tip of the handle body to which the wire of the brush part is attached. The wire is protruded from both sides of the wire, and the ends of both supports are provided with connecting portions for internally supporting a portion of the wire in the length direction.

[Effect]

In order to use the interdental cleaning brush having such a configuration, the connecting portion provided between the tips of the struts is pressed with a finger to bend the struts at the base end or at an appropriate position in the middle. Since the struts are made of a flexible material, the struts can be easily bent, and since the struts are provided only on both sides of the wire, the direction of bending of the struts is relative to the plane that includes the wire and both struts. limited to the orthogonal direction. Since bending deformation in the direction perpendicular to the plane containing the support and wire is relatively easy, the posture after bending can be maintained, and the tip of the brush part can be easily positioned in the cleaning area. be able to. In addition, the brush part after bending should be flexible in the direction of bending, and on the other hand,
Since rigidity can be imparted in the direction orthogonal to the bending direction, it is possible to avoid stress concentration on the bending portion due to bending motions and brushing, and it is also possible to perform forceful brushing.

In addition, since the support is provided at a certain distance from the wire, the rigidity in the axial direction at the base end of the wire in the brush section is extremely large, so even if external force or vibration is applied to the wire in these directions, , the struts will not be deformed.

Furthermore, the bending of the brush part itself does not directly bend the wire, but by bending the support and indirectly bending the wire via the connecting part, so even if the support is bent at an acute angle, Since the wire never bends at an acute angle and always bends in a relatively gentle curve, fatigue of the wire at the bent portion can also be reduced.

〔Example〕

Next, details of the present invention will be explained based on illustrated embodiments. What is shown as FIG. 1A is a front view of the interdental cleaning brush according to the present invention, and FIG. 1B is a side view of the same. The interdental cleaning brush has a handle body 1 that has a cylindrical shape as a whole and has a gently tapering diameter at the tip end, and the base end of a wire 3 of a brush part 2 is embedded in the handle body 1. A pair of flexible support columns 4, 4 are protruded from both sides of the wire 3 in a substantially parallel state, and a substantially spherical connecting portion 5 is provided at the tip of both the support columns 4, 4. It is being constructed. The connecting portion 5 internally supports the intermediate portion of the wire 3, so that vibrations acting on the wire during brushing are transmitted to the supports 4, 4 via the connecting portion 5. The struts 4, 4 are formed integrally with the handle body 1, and can be made of soft synthetic resin or hard synthetic resin as long as they are flexible. The illustrated example is made of hard synthetic resin, and the thickness D of the pillars 4, 4 is set thinner than the width W, so that the pillars 4, 4 can be easily bent in the thickness direction. Furthermore, the reason why the connecting part 5 is made into a substantially spherical shape is to prevent the brush part 2 from penetrating more deeply between the teeth than necessary when inserting the brush part 2 between the teeth. The shape is not limited to a spherical shape as long as it has a thick part that can prevent the problem. For example, as shown in FIG. It is also possible to simply form it thicker than 4 and 4. In the illustrated embodiment, the connecting portion 5 is made of hard synthetic resin and is integrally molded with the struts 4, 4 and the handle body 1. If a gap 6 is formed between the struts 4, 4 and the wire 3, and the struts 4, 4 and the wire 3 are arranged in the same plane, the struts 4,
4 can also be configured in other ways; for example, as shown in FIG. 5, both supports 4, 4 can be arranged in a V-shape when viewed from the front.

In the figure, 7 is an annular step, and 8 is a connecting cylinder. The annular step portion 7 and the connecting tube 8 are for connecting the holder 9 which is constructed separately.
This is done by fitting it inside. By connecting the holder 9 to the connecting tube 8 in this manner, it is possible to provide an interdental cleaning brush with a long gripping section and easy positioning of the brush section on the back teeth.

Note that holder 9 does not necessarily need to contact
It is also optional to use a short interdental cleaning brush. Further, the holder 9 not only serves to extend the gripping portion of the interdental cleaning brush, but also serves to protect the brush section 2 when the brush section 2 of the interdental cleaning brush is accommodated. Further, a clip 11 is attached to the outer wall of the holder 9, and the interdental cleaning brush can be easily carried by inserting the clip 11 into a breast pocket or the like.

The interdental cleaning brush having such a configuration is used in the following manner. Connect the holder 9 to the handle body 1 to extend the handle, then press the connecting part 5 or the upper part of the struts 4, 4, bend the struts 4, 4 at the base end or at a suitable intermediate position, and bend the brush part 2. . The brush portion 2 can be bent only in a direction perpendicular to the plane in which the struts 4, 4 and the wire 3 are included, since the struts 4, 4 are present only on both sides of the wire 3. The bending is not done by directly bending the wire 3, but by bending the supports 4, 4.
Since this is done indirectly via the connecting part 5, even if the supports 4, 4 are bent at an acute angle, the wire 3
is bent in a gentle curve, and no unreasonable force is applied to the wire 3. Since the struts 4, 4 do not exist around the entire circumference of the wire 3, but exist only on both sides of the wire 3, there is a difference in the elastic restoring force of the brush portion 2 between the bending direction and the direction perpendicular to the bending direction. The bending angle once set can be maintained. Next, the brush portion 2 is positioned between the teeth to be cleaned, and brushing is performed. In this embodiment, since the holder 9 is connected to the handle body 1, the brush portion 2 can be easily positioned at the back of the oral cavity, such as on the molars.

Further, since the brush portion 2 is given flexibility in the bending direction and rigidity in the direction orthogonal to the bending direction, vibration in the bending direction is alleviated and the bending portion of the wire 3 is It is possible to avoid concentration of stress, and on the other hand, it is possible to perform powerful brushing in the direction perpendicular to the direction of bending, so it is possible to provide an interdental cleaning brush that is both excellent in durability and has an excellent cleaning effect. It is.

In addition, in this embodiment, since the connecting portion 5 installed between the pillars 4 is formed in a spherical shape, there is no risk of damaging the inside of the oral cavity even when brushing forcefully, and especially when cleaning the bridge ponte. It is safe because the base end of the brush portion 2 does not go deeper into the lower part of the ponte than necessary. Furthermore, in this embodiment, the brush portion 2 is placed in the holder 9 after use.
It is hygienic because it can be stored inside, and the holder 9 has a clip 11.
It is convenient to carry the interdental cleaning brush by inserting it into your chest pocket or the like, and you can use it even when you are out and about.

[Effect of idea]

The present invention has flexible struts protruding from the tip of the handle body on both sides of the wire of the brush portion, and a connecting portion is constructed between the tips of both the struts, and
Since a part of the wire of the brush part is placed inside the connecting part to support the brush part, the brush part can be easily bent, and the bent state of the brush can be maintained even if the hand is removed. , positioning of the brush portion to the cleaning area becomes extremely easy. In addition, since the struts are placed on both sides of the wire at a certain distance from the wire, the brush section after bending can be given flexibility in the bending direction and rigidity in the direction perpendicular to the bending direction. This reduces the stress concentration on the bent part during brushing, improving the durability of the interdental cleaning brush. On the other hand, it can provide rigidity in the direction perpendicular to the bending direction, allowing for powerful brushing. It is possible to provide an interdental cleaning brush that is capable of cleaning and has excellent cleaning effects. In addition, since the connecting part that supports the wire is constructed between the tips of both supports and has a certain length, the brush part can be used more easily than necessary when cleaning bridge parts such as dentures. It is safe because it does not go deep into the lower part of the Ponteik. Furthermore, the wire is only internally supported at the base end by the handle body and by the connecting part at the appropriate intermediate point, and the other parts are exposed, so even if the wire breaks during use, it will not happen. It can be detected immediately, and you can know when to replace the interdental cleaning brush.

[Brief explanation of drawings]

FIG. 1A is a front view of an embodiment of the interdental cleaning brush according to the present invention, FIG. 1B is a side view of the same embodiment,
FIG. 1C is an end view taken along line A-A in FIG. 1A, FIG. 2 is a front view of the holder in the embodiment, FIG. An explanatory diagram showing a state in which the brush part is housed in the holder, Figures 4A and 4B, and Figure 5 are explanatory diagrams of main parts of other embodiments.
Figure 6A is a front view of a conventional interdental cleaning brush.
Figure B is an enlarged cross-sectional view of the same interdental cleaning brush. 1...Handle body, 2...Brush part, 3...
Wire, 4... Support, 5... Connecting part, 6... Interval, 7... Annular step, 8... Connecting tube, 9... Holder, 10... Open end, 11... Clip, a... …
Handle body, b...Brush portion, c...Coating.

Claims (1)

[Claims for Utility Model Registration] 1. At the tip of the handle body to which the wire of the brush part is attached, a pair of flexible supports integrally formed with the handle body are placed at a certain distance from the wire and the wire is attached to the tip of the handle body. An interdental cleaning brush comprising connecting parts that protrude from both sides and at the ends of both pillars connect parts that internally support a part of the wire in the length direction. 2. The interdental cleaning brush according to claim 1, wherein the connecting portion is formed of a hard member that does not have flexibility.