JPH07265127A - Toothbrush with spring - Google Patents

Abstract

PURPOSE:To provide the toothbrush, which can be used for a long period, for enabling optimal cleaning and massage corresponding to a brushing face and simultaneously facilitating the sanitary management of the toothbrush. CONSTITUTION:This toothbrush is composed of a brush head 1, for which plural through holes 2 for inserting the bundle of bristles are formed and lock steps 3 formed by reducing the diameter of a part of these through holes 2 are provided, and a cover 8, for which plural movable stands 4 to be idly fitted to the through holes 2, plural springs for energizing the respective movable stands 4 while being housed in the through holes 2 and plural draining holes 9 are formed, and which is attachable and detachable to the back side of the brush head 1, where the respective movable stands 4 are independently slid inside the respective through holes 2. On the other hand, as a spring, a corn coil spring 6 formed by punching the position of an elastic thin plate 7 corresponding to the movable stand 4 is selectively used, and further, this elastic thin plate 7 is used as a cover 8. The draining holes 9 are formed at the positions respectively corresponding to the through holes 2 or the spring with a different spring constant for each bristle bundle or for the unit of a column or a row is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush with a spring in which a bunch of hair moves up and down according to a brushing surface, and more particularly to a toothbrush which can further improve the brushing effect and can be maintained hygienically.

[0002]

2. Description of the Related Art A conventional toothbrush has a bristles fixed to a brush head. Therefore, it is not possible to effectively brush the tooth surface, the interdental portion, and the gingiva having a complicated shape. In particular, bring the hair bundle into contact with the tooth surface and gums,
When cleaning the tooth surface and massaging the gingiva at the same time, it is not possible to obtain a sufficient cleaning effect on the tooth surface if brushing pressure is applied according to the gingiva. Will cause damage to the gums. In addition, when brushing a complicatedly uneven surface, it is necessary to brush it according to the concave surface, and due to this excessive brushing pressure, gingival abrasion / retraction,
There was a problem that the tooth bundle was inevitable and the hair bundle spreads due to excessive pressure and deteriorates early. In order to avoid this, cleaning and massage may be performed by combining various brushing methods, but it is difficult to learn these brushing methods. Also, with a toothbrush with elastic force on the neck between the handle and the head, it is possible to move according to the brushing pressure to some extent, but in this case the entire head moves, so it is also appropriate for the tooth surface and gingival surface. Unable to expect good cleaning and massage.

In view of this, in Japanese Unexamined Patent Publication No. 5-123218, a brush core (bristles) having one end fixed to a support piece movably accommodated in a hole formed in a base (head),
Disclosed is an elastic brush in which a spring for applying an elastic force to a support piece of a brush core is arranged in a hole of a base.

[0004]

However, in this elastic brush, although the brush core is movable according to the uneven surface or the brushing pressure, one of the holes for accommodating the support piece and the spring is closed, During brushing, dirt such as dental plaque and food pieces easily accumulate in the holes along with water, and water is difficult to remove due to surface tension. Therefore, there is a problem that the toothbrush cannot be kept clean.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to perform optimum cleaning and massage according to the brushing surface, and at the same time, hygiene management of the toothbrush is easy, And to provide a toothbrush that can be used for a long period of time.

[0006]

In order to achieve the above object, the present invention provides a locking step in which a plurality of through holes for inserting hair bundles are formed and a part of these through holes is reduced in diameter. A brush head provided, a plurality of movable bases that are capable of loosely fitting a bunch of hairs on one side and loosely fitted in the through holes, a plurality of springs that are housed in the through holes and urge each movable base, and a plurality of springs A means for forming a water drain hole and a detachable cover on the back side of the brush head, in which each movable base slides independently in each through hole, was used. Further, a conical coil spring formed by punching out a position corresponding to the movable base of the elastic thin plate was used as the spring, and a means using this elastic thin plate as the cover was selectively used.

Further, means for forming a water draining hole at a position corresponding to the through hole, or selectively adopting a means for making a toothbrush using a spring having a different spring constant for each hair bundle, for each column or for each row, may be adopted. And Here, the row means the longitudinal direction of the head, and the column means the direction intersecting with this row.

[0008]

In the present invention employing the above-mentioned means, the movable table having the tufts of bristles slid in the through hole according to the shape of the brushing surface and the brushing pressure. However, the sliding range of the movable table is restricted by the locking step. The locking step also prevents the hair bundle from spreading. The spring applies an elastic force to the movable table, and in response to this, the tuft of hairs acts to apply a brushing pressure according to the amount of deformation (compression width) of the spring to the brushing surface. Further, the drain hole functions as a discharge port for water that has entered the through hole, plaque and food pieces. The cover is detachably attached to the brush head to prevent the movable table and the spring from falling off, and also functions as a lid when replacing the bristles (movable table) and cleaning the inside of the through hole.

According to the second aspect of the present invention, the thickness of the conical coil spring at the time of maximum compression is almost the same as that of the elastic thin plate, and as a result, the brush head can be thinly formed. In addition to this, in the third aspect, since the elastic thin plate provided with the conical coil spring is used as the cover, the number of components is reduced and the weight of the toothbrush is reduced.

Further, according to the fourth aspect of the present invention, the through hole and the drainage hole communicate with each other, so that efficient drainage is possible. According to the present invention, the spring can apply different elastic force to each hair bundle, each column, and each row, and brushing adapted to the shape of the oral cavity is performed without the need to provide hair bundles having different hardness. Have an effect.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a vertical sectional view showing an embodiment of the present invention, in which 1 is a brush head integrally formed with a handle, 2 ... 2 are through holes formed in the brush head 1,
3 is a locking step formed by reducing the diameter of each through hole 2 and 4 ... 4 is a cylindrical movable base with bristles 5 planted on the upper surface thereof, each of which is housed in the through hole 2. There is. The locking step 3
Is to prevent the movable table 4 from coming out of the through hole 2, and the diameter of the locking step 3 needs to be smaller than that of the movable table 4. Further, the locking step 3 can prevent the hair bundle 5 from spreading and prevent dirt from entering the through hole 2.

Denoted by 6 are conical coil springs formed by punching out the elastic thin plate 7, and are arranged so as to contact the bottom surface of the movable table 4. In this embodiment, a stainless steel plate is used as the elastic thin plate 7. This is because rust resistance and workability are good, and the punched and formed spring has an appropriate elastic force. However, the elastic thin plate is not limited to this embodiment, such as a plastic plate. Regarding the forming, as shown in FIG. 2, after the elastic thin plate 7 is punched out in a spiral shape at a position corresponding to the movable table 4, this portion is extruded from one side (in the direction of the arrow in the drawing). Here, the thickness of the elastic thin plate 7 and the number of spirals of the conical coil spring 6 are not limited, but the conical coil spring 6 has a size that can be stored in the through hole 2.

Reference numeral 8 is a cover detachably attached to the brush head 1. The cover 8 prevents the movable base 4 and the elastic thin plate 7 from coming off from the brush head 1 by an external force. The cover 8 is attached to the brush head 1 by fitting a guide of the cover 8 along a groove provided below the brush head 1 as shown in FIG. However, the structure for attaching / detaching the cover 8 to / from the brush head 1 may be any structure such as a well-known structure provided that the cover does not come off during brushing. Further, although the cover having the water drainage hole 9 is used in the present embodiment, an elastic thin plate formed by a conical coil spring may be used as the cover. In this case, the conical coil spring pushing portion of the elastic thin plate functions as the water drainage hole, and the toothbrush The number of components can be reduced.

Reference numeral 9 denotes a drain hole formed in the cover 8 so as to communicate with the through holes 2 and 2, and functions as a discharge port for water, dental plaque, food pieces and the like that have entered the through hole 2. That is, after brushing, as shown in FIG. 4, by pressing the hair bundles 5 ... 5 with the finger 10, the plaque and the like accumulated in the through hole 2 can be discharged together with water, and the toothbrush can be sanitized. Can be maintained. Further, if the cover 8 cannot be removed by this operation, it can be removed by removing the cover 8 and rinsing with water. Further, when the movable table 4 and the through hole 2 have substantially the same diameter in order to prevent the movable table 4 from moving to the left and right during brushing, the through hole 2 and the water drain hole 9 communicate with each other. Since water and air in the through holes 2 are efficiently discharged, the movable base 4 can be smoothly slid.

In the toothbrush with a spring having the above-described structure, the movement and function of each member during brushing will be described with reference to FIG. Since the movable table 4 is configured to slide in the through hole 2, the movable table 4 moves up and down according to the unevenness of the brushing surface, and each hair bundle 5 always contacts the tooth surface 11. Therefore, brushing can be performed according to the uneven shape of the tooth surface 11. At this time, each of the hair bundles 5 brushes the tooth surface 11 with a brushing pressure corresponding to the elastic force from the conical coil spring 6. In other words, while relieving excessive pressure, it is possible to effectively clean the tooth surface without damaging the tooth structure. This is also the case when brushing teeth and gums simultaneously, and in addition to cleaning the tooth surface, the gums can be massaged with an appropriate brushing pressure.

The elastic thin plate 7 of the first embodiment is used as a spring.
6 may be housed in the through hole 2 instead of the conical coil springs 6 ... 6 formed by punching. In addition, by arranging a coil spring having a larger spring constant than the other rows in the central several rows, brushing according to the shape is not only performed, but in addition to that, the tooth surface has a higher brushing than gingiva. Pressure can be applied, and tooth surfaces can be cleaned and gums can be massaged more effectively. In this way, by combining springs having different spring constants for each hair bundle or for each column or row, it is possible to more adapt to the shape in the oral cavity and realize the desired brushing method.

[0017]

As described above, with the spring toothbrush according to the present invention, it is possible to perform brushing with an appropriate pressure while adapting to the shape of the brushing surface. In addition, the spread of the hair bundle due to excessive brushing pressure was prevented, and the toothbrush can be used for a long time. Further, since the dirt can be discharged from the water drain hole, the toothbrush can be kept clean. Further, since the cover is detachable, when the hair bundle deteriorates, only the movable base of this portion is replaced, and the brush main body, which originally has little deterioration, can be used for a long period of time, which is economical.

Further, by using a conical coil spring formed of an elastic thin plate as the spring, the maximum compression width of the spring was small and the brush head could be made thin. Furthermore, by using springs with different spring constants for each hair bundle, column, or row, it is possible to adapt to the shape of the oral cavity and
More appropriate brushing pressure can be applied to some parts. That is, ideal brushing can be performed without having to be familiar with various brushing methods.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a method for forming a conical coil spring.

FIG. 3 is a perspective view showing an example of a cover attaching / detaching structure.

FIG. 4 is a side view showing an example of a method of discharging water or the like.

FIG. 5 is a vertical sectional view showing the movement of each member during brushing.

[Explanation of symbols]

 1 Brush Head 2 Through Hole 3 Locking Stage 4 Movable Platform 5 Bristles 6 Conical Coil Spring 7 Elastic Thin Plate 8 Cover 9 Drainage Hole

Claims (5)

[Claims] 1. A brush head having a plurality of through holes for penetrating a hair bundle and provided with locking steps formed by partially reducing the diameter of the through holes; A plurality of movable bases that can be loosely fitted in the through holes, a plurality of springs that are housed in the through holes and that urge each movable base, and a plurality of water drain holes are formed and can be attached to and detached from the back side of the brush head. A toothbrush with a spring, characterized in that each movable base independently slides in each through hole. 2. The toothbrush with spring according to claim 1, wherein the spring is a conical coil spring formed by punching out a position corresponding to the movable base of the elastic thin plate. 3. The cover is an elastic thin plate in which a conical coil spring is formed by punching out a position corresponding to the movable table.
Toothbrush with spring as described. 4. The toothbrush with spring according to claim 1, wherein the water drainage hole is formed at a position corresponding to the through hole. 5. The toothbrush with spring according to claim 1, 2, 3 or 4, wherein the spring has a different spring constant for each hair bundle, or for each column or row.