JP2003265234A - Tooth brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tooth brush which enables the simple replacement of a brush part used with a new brush part upon the removal thereof from a handle part. <P>SOLUTION: The tooth brush, is provided with a rail groove (112) at the tip part (111) of a flexible handle part (11) to form pieces (113) and (113) to be inserted having recessed notch parts (114) and (114) facing each other while a ridge guide (115) and a protrusion part (16) are formed from the side of the base end part of the rail groove (112). On the other hand, an insertion piece (122) is formed on the rear part (121) of a brush part (12) with bulged parts (123) and (123) which are resiliently energized while being fitted into the recessed notch parts (114) and (114) of the handle part (11) by the formation of a cut part (124). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush in which a used brush portion is detached from a handle portion and can be easily replaced with a new brush portion.

[0002]

2. Description of the Related Art Most of the conventional toothbrushes have a handle and a brush integrated with each other, or have a handle and a brush removably connected to each other. is there. The former one, in which the handle part and the brush part are integrated, is discarded as it is after use.
The latter has a handle and a brush that are detachably connected to the toothbrush.The handle that can be continuously used is reused as it is, and the used brush is removed from the handle and discarded or recycled. At present, it contributes to the reduction of garbage waste, which is becoming a social problem, or the recycling process.

As described above, the toothbrush in which the handle portion and the brush portion are detachably connected is, for example, shown in FIGS.
The one shown in (C) is known. (JP-A-5-168
That is, as shown in FIG. 8A, the thin tip 8 of the handle 81 is used.
2, a male screw is engraved, a female screw is engraved on the side end surface of the brush portion 83, and these are screwed together to be detachably replaceable and integrated. However, since it is the portion of the small diameter tip 82 where the handle 81 and the brush portion 83 are connected that the stress is likely to concentrate during brushing of teeth, it is easy to break at the threaded boundary portion of the thin diameter tip 82. There is.

Further, the one shown in FIG. 8B has a handle portion 8
A brush portion base 831 'is integrally formed with a small diameter tip 82' of the 1 ', and locking grooves 8 are formed on both side surfaces of the brush portion base 831'.
32 'is engraved, and locking pieces 834' provided on both sides of the brush part 83 'are fitted and locked along the locking groove 832' formed on the brush part base 831 'to be integrated. To do. However, in this kind, the handle 81 'and the brush 8
If the brush portion 83 'is not connected to the brush portion 3'by force fitting, the brush portion 83' is easily displaced or deviated from the handle portion 81 'during use. Therefore, the brush portion 8 that is forcedly fitted into the handle portion 81 '
Replacing the 3'is inconvenient in practice because a large force is required to pull it apart.

Further, as shown in FIG. 8C, a fitting groove 835 ″ is formed in the brush base 831 ″, and a brush body 85 ″ is fitted into the fitting groove 835 ″ to form a peripheral wall of the brush base 831 ″. A screw having a small diameter tip of the handle 81 ″ is screwed into and fixed in the screw hole 836 ″ formed at the side end. However, this type has a problem that it is easy to break at the threaded boundary portion of the small-diameter tip, it takes time to replace it, and the number of members increases, so that the cost increases.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and removes the brush portion that has been worn or deformed by use from the handle portion.
The handle part is used as it is, and a new brush part can be easily replaced and attached to this handle part, and during use of the toothbrush, there is a gap between the brush part and the handle part, and To provide a toothbrush that does not deviate.

[0007]

DISCLOSURE OF THE INVENTION The present invention is to solve the above problems, and its gist is to provide a toothbrush which can be replaced by replacing a brush portion with a flexible handle portion. A rail groove is provided at the tip of the handle to form an inserted piece having a recessed portion, and on the other hand, on the back side of the brush portion, there is a bulging portion elastically locked to the inserted piece. A toothbrush having an insert piece formed therein.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be specifically described below with reference to the drawings. 1 is a side view showing an overall image of the toothbrush of the present invention, FIG. 2 is a perspective view showing the tip of the handle of the present invention, and FIG. 3 is an X- line of FIG.
FIG. 4 is a sectional view taken along line X-arrow, FIG. 4 is a perspective view showing a brush portion of the present invention, FIG. 5 is a sectional view taken along line X′-X ′ of FIG. 4, and FIG. FIG. 8 is a side view showing a state of being attached to the brush portion, and FIG. 7 is a side view showing a state of removing the handle portion from the brush portion.

As shown in the drawings, the present invention is a toothbrush 1 in which the brush portion 12 can be replaced by the handle portion 11 having flexibility, and the tip portion 111 of the handle portion 11 can be replaced.
The rail groove 112 is provided on the back surface to form the inserted piece 113 having the recessed portion 114, while the back surface portion 121 of the brush portion 12 is formed.
In addition, the insertion piece 122 having the bulging portion 123 elastically locked to the insertion piece 113 is formed.

A rail groove 112 is provided at a tip portion 111 of the flexible handle portion 11 so as to face an inserted piece 113 having a recessed portion 114, and the base of the rail groove 112 is formed. The ridge guide 115 and the protrusion 116 are formed from the end side, while the back surface part 121 of the brush part 12 is formed.
In addition, an insertion piece 122 having a bulging portion 123 that is elastically urged by the formation of the cut portion 124 and that matches the recessed portion 114 of the handle portion 11 is formed.

According to the present invention described above, the brush portion 12 that has been worn or deformed due to use is removed from the handle portion 11, and a new brush portion 12 can be easily and surely replaced and attached to the handle portion 11 while being used. As a result, the toothbrush 1 was obtained in which the brush portion 12 did not shift or deviate from the handle 11. Then, the handle portion 11 that can be continuously used is reused as it is, and the used brush portion 12 is removed from the handle portion 11 and is discarded or recycled for contributing to reduction of waste waste and recycling processing. It is effective.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A toothbrush 1 of the present invention shown in FIG. 1 has a tip portion 111 of a flexible handle portion 11 made of plastic or the like.
And the brush portion 12 are detachably fitted and obtained. That is, as shown in FIGS. 2 and 3, the handle 11 having flexibility is provided with a rail groove 112 at the tip portion 111 thereof, and the rail groove 112 has an insertion piece 114 having a recess 114. 114 are formed to face each other, and the ridge guide 11 extends from the base end side of the rail groove 112 toward the center.
5, and a projection 116 is formed obliquely upward from the base end side of the convex guide 115.

As shown in FIGS. 4 and 5, the brush portion 12 which is detachably inserted into the tip portion 111 of the handle portion 11 has a back surface portion 121 of the brush portion 12, that is, the brush 1 as shown in FIGS.
On the side opposite to the side where 2'is attached, the handle 11
An insertion piece 122 that is inserted between the insertion pieces 113 and 113 is formed. The insertion piece 122 is attached at the same height position as the insertion piece 113 via the supporting portion 125, and the width dimension thereof is set to be substantially the same as the width interval between the insertion pieces 113, 113. To be done. Further, the notch 124 formed by cutting from the center of the tip of the insertion piece 122 receives the ridge guide 115 of the handle portion 11 and imparts elasticity to the insertion piece 122.

Further, on both sides of the tip of the insertion piece 122 of the brush portion 12, the recessed portions 114, 11 of the handle portion 11 are provided.
4 is formed with bulging portions 123, 123, and the width dimension of the insertion piece 122 at the portion where the bulging portions 123, 123 are formed is the width between the insertion pieces 114, 114 of the handle portion 11. It is set larger than the interval. As a result, the brush portion 12
When the insert is inserted into the tip portion 111 of the handle portion 11, the cut portion 12
Bulging portion 12 of the insertion piece 122 that is elastically urged by
3,123 are elastically attached to the recessed portions 114, 114 of the handle 11.

Then, the convex guide 11 of the handle 11 is formed in the recess 126 formed on the side wall of the rear end of the brush 12.
The protruding portion 116 protruding from the base end portion side of 5 is engaged to prevent the brush portion 12 from deviating from the handle portion 11 during use.

To insert the brush portion 12 into the tip portion 111 of the handle portion 11, as shown in FIG. 6, the tip portion 111 of the handle portion 11 is moved from the horizontal direction of the arrow to the back face portion 1 of the brush portion 12.
21 and slides the inserted piece 113 of the handle portion 11 into the inserting piece 122 of the brush portion 12, and at the same time, inserts the recessed portion 114 of the handle portion 11 into the cutout portion 124 of the brush portion 12. The bulging portion 123 is locked by utilizing the elasticity that occurs,
Further, by engaging the protrusion 116 of the handle portion 11 with the recess 126 formed on the side wall of the rear end portion of the brush portion 12, as shown by the alternate long and short dash line, the brush portion 12 is attached to the tip portion 111 of the handle portion 11. Is installed.

To remove the brush portion 12 from the tip portion 111 of the handle portion 11, as shown in FIG.
And the flexible handle 11 is lifted in the direction of the arrow a and bent to the position shown by the alternate long and short dash line and moved in the direction of the arrow b, the protrusion 116 of the handle 11 causes the recessed portion 126 of the brush portion 12 to move. And the recessed portion 11 of the handle 11
4, the bulging portion 123 of the brush portion 12 deviates upward,
The brush section 12 can be easily removed from the handle section 11.

According to the present invention, the brush portion which has been worn or deformed and is unusable due to use can be easily removed from the handle portion, and a new brush portion can be easily replaced and attached to the handle portion. Is now possible. Further, the brush portion does not shift or deviate from the handle portion during use of the toothbrush, which is extremely convenient in practice. The handle part that can be continuously used can be reused as it is, and the used brush part can be removed from the handle part and discarded or recycled, which greatly contributes to the reduction of waste and recycling. It has the effect that it can be expected. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an overall image of a toothbrush of the present invention.

FIG. 2 is a perspective view showing a tip portion of a handle portion of the present invention.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a perspective view showing a brush portion of the present invention.

5 is a cross-sectional view taken along line X'-X 'of FIG.

FIG. 6 is a side view showing a state in which the tip end portion of the handle portion is attached to the brush portion.

FIG. 7 is a side view showing a state in which the handle portion is removed from the brush portion.

FIG. 8A is a partially cutaway side view showing an example of a conventional technique. (B) It is a perspective view which shows the other example of a prior art. (C) It is a perspective view showing another example of the prior art.

[Explanation of symbols] 1 toothbrush 11 handle 111 Tip 112 rail groove 113 Inserted piece 114 recess 115 convex guide 116 protrusion 12 Brush section 12 'brush 121 Back 122 Insert 123 bulge 124 notch 125 support 126 Dimple

Claims (2)

[Claims] 1. A toothbrush in which a brush portion can be replaced with a flexible handle portion so as to be replaceable, and a rail groove is provided at a tip portion of the handle portion to form an inserted piece having a recessed portion. On the other hand, the toothbrush is characterized in that an insertion piece having a bulging portion elastically locked to the insertion piece is formed on the back surface of the brush portion. 2. A flexible groove is provided at the distal end of a handle portion with a rail groove and an insertion piece having a recessed portion is provided so as to face each other, and a ridge guide is provided from the base end side of the rail groove. And a protrusion, and on the other hand, the back surface of the brush has a bulge that matches the recess of the handle, and forms an insertion piece that is elastically urged by forming a notch. The toothbrush according to claim 1, wherein the toothbrush is formed.