JP6390033B2 - toothbrush - Google Patents

Description

  The present invention relates to a toothbrush.

  A conventional toothbrush has a handle and a head, and a bristle bundle (bundle of brushes) is implanted in the head (for example, Patent Document 1).

  FIG. 22 is a schematic view showing a state before and after using a conventional toothbrush 400, where (a) shows a state before use or just after use, and (b) shows a state after use. When the conventional toothbrush 400 is used for a month or more, as shown in FIG. 22B, the tip of the hair bundle 420 implanted in the head 410 spreads left and right, and the tip of the hair bundle 420 is perpendicular to the teeth. It stops touching. Therefore, it is impossible to remove plaque effectively and the durability is inferior.

Japanese Utility Model Publication No. 6-38653

  In view of the above problems, the present invention provides a toothbrush with excellent durability capable of effectively removing plaque over a long period of time.

The toothbrush which concerns on 1 aspect of this invention has the 1st holder which has the 1st head by which the hair | bristle bundle was flocked, and the holding part, The 2nd head which has the 2nd head which has the penetration part of the said hair | bristle bundle, and a holding part. When the grip portion of the first holder and the grip portion of the second holder are gripped, the distance between the first head and the second head varies with the protrusion as a fulcrum, The length of the extended part of the hair bundle can be adjusted .

  According to the said structure, the length of the extension part of the hair | bristle bundle from a penetration part can be adjusted freely, and toothbrushing (brushing) can be performed with the length of favorite hair | bristle bundle. Moreover, if the toothbrush is stored in a state where the length of the extension portion is shortened, the tip of the bristle bundle becomes difficult to spread from side to side. Therefore, when brushing teeth, the tips of the hair bundle come into contact with the teeth at right angles, and the plaque can be effectively removed over a long period of time, which is excellent in durability.

It is a perspective view which shows the toothbrush which concerns on 1st Embodiment of this invention, and shows the state which the up-and-down head closed. It is a perspective view which shows the toothbrush which concerns on 1st Embodiment of this invention, and shows the state which the up-and-down head opened. It is a side view which shows the decomposition | disassembly state of the toothbrush which concerns on 1st Embodiment of this invention. It is a side view of the toothbrush which concerns on 1st Embodiment of this invention. It is a bottom view of the toothbrush which concerns on 1st Embodiment of this invention. It is a top view of the toothbrush which concerns on 1st Embodiment of this invention. It is a bottom view which shows the back surface side of the upper holder which concerns on 1st Embodiment of this invention. It is the schematic diagram which looked at the open / closed state of the up-and-down head of the toothbrush which concerns on 1st Embodiment of this invention from the front-end | tip (head) side. (A) shows a state where the upper and lower heads are completely closed, (b) shows a state where the upper and lower heads are half open, and (c) shows a state where the upper and lower heads are fully opened. It is a perspective view which shows the toothbrush which concerns on 2nd Embodiment of this invention, and shows the state which the up-and-down head opened. It is a side view which shows the toothbrush which concerns on 2nd Embodiment of this invention, and shows the state which the upper and lower heads closed. It is a side view which shows the decomposition | disassembly state of the toothbrush which concerns on 2nd Embodiment of this invention. It is a side view of the toothbrush which concerns on 2nd Embodiment of this invention. It is a bottom view of the toothbrush which concerns on 2nd Embodiment of this invention. It is a top view of the toothbrush which concerns on 2nd Embodiment of this invention. It is a top view of the lower holder which concerns on 2nd Embodiment of this invention. It is a side view which shows the toothbrush which concerns on 3rd Embodiment of this invention, and shows the state which the up-and-down head opened. It is a side view which shows the toothbrush which concerns on 3rd Embodiment of this invention, and shows the state which the up-and-down head closed. It is a side view which shows the decomposition | disassembly state of the toothbrush which concerns on 3rd Embodiment of this invention. It is a bottom view of the toothbrush which concerns on 3rd Embodiment of this invention. It is a top view of the toothbrush which concerns on 3rd Embodiment of this invention. It is a top view of the lower holder which concerns on 3rd Embodiment of this invention. It is a schematic diagram which shows the state before and behind use of the conventional toothbrush, (a) shows the state after use before or immediately after use, (b).

<Overview>
The toothbrush which concerns on 1 aspect of this invention is equipped with the 1st holder which has the 1st head by which the hair | bristle bundle was planted, and the 2nd holder which has the 2nd head which has the penetration part of the said hair | bristle bundle, The said 2nd holder Is provided in a state in which the distance between the first head and the second head is variable.

  According to such a structure, since the 2nd holder is provided in the state which can change the space | interval of a 1st head and a 2nd head, the length of the extension part of the hair | bristle bundle from a penetration part can be made freely. It can be adjusted and brushing can be done with the desired length of hair bundle. Moreover, if the toothbrush is stored in a state where the length of the extension portion is shortened, the tip of the bristle bundle becomes difficult to spread from side to side. Therefore, when brushing teeth, the tips of the hair bundle come into contact with the teeth at right angles, and the plaque can be effectively removed over a long period of time, which is excellent in durability.

<Embodiment>
Hereinafter, a toothbrush which is one embodiment of the present invention will be described in detail with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing the toothbrush 100 according to the first embodiment of the present invention, and shows a state in which the upper and lower heads 111 and 121 are closed. FIG. 2 is a perspective view showing the toothbrush 100 and shows a state in which the upper and lower heads 111 and 121 are opened.

  In this specification, an increase in the interval between the upper and lower heads 111 and 121 is referred to as “opening”, and conversely, a decrease in the interval between the upper and lower heads 111 and 121 indicates that the interval between the upper and lower heads 111 and 121 is reduced. 121 heads are said to be “closed”. An increase or decrease in the interval between the upper and lower heads 111 and 121 is defined as “opening and closing” of the upper and lower heads 111 and 121. The toothbrush 100 is a radio pliers style in which the upper and lower heads 111 and 121 are opened and closed when the upper and lower handles 114 and 124 (described later) are gently grasped with fingers.

  FIG. 3 is a side view showing an exploded state of the toothbrush 100. FIG. 4 is a side view of the toothbrush 100. FIG. 5 is a bottom view of the toothbrush 100. FIG. 6 is a plan view of the toothbrush 100. FIG. 7 is a bottom view showing the back side of the upper holder 110.

  As shown in FIG. 3, the toothbrush 100 includes two members, a rod-shaped upper holder 110 and a rod-shaped lower holder 120. The total length of the lower holder 120 is shorter than the total length of the upper holder 110.

  As shown in FIG. 2, the upper holder 110 includes an upper head (head) 111 having a plurality of flocking holes 112 into which a hair bundle 130 (brush bundle) is implanted, a neck (neck) 113, and a hand. And a handle (gripping part) 114 that is long enough to be gripped.

  As shown in FIG. 2, the lower holder 120 includes a lower head 121 having a plurality of through holes 122 through which the hair bundle 130 is inserted, a neck 123, and a handle 124 having a lever portion 125. In FIG. 2, 130 a indicates an extended portion of the hair bundle 130 inserted through the through hole 122.

  In the toothbrush 100 of the present embodiment, for the sake of convenience, the heads 111 and 121 are referred to as tips (left side in the drawing), and the handles 114 and 124 are referred to as rear (right side in the drawing).

  As shown in FIG. 4, small protrusions 126 serving as fulcrums are formed on the left and right sides of the handle 124 of the lower holder 120 (upper and lower sides in FIG. 5). Through holes 116 into which the protrusions 126 are fitted are also formed on both the left and right sides (upper and lower sides in FIG. 5) of the handle 114 of the upper holder 110. As shown in FIG. 5, the lower holder 120 is pivotally supported by the upper holder 110 by fitting the left and right protrusions 126 into the through holes 116 from the inside. In addition, the through-hole 116 should just be a shape which the projection part 126 fits, and does not need to penetrate.

  As shown in FIG. 4, the neck 123 and the handle 124 of the lower holder 120 are fitted into the groove 117 (see FIG. 7) on the back surface of the upper holder 110. In addition, a part (right side of the drawing) of the groove 117 of the upper holder 110 shown in FIG. 7 is an opening 117a (see FIG. 6), and a protruding portion 124a (see FIG. 4) of the handle 124 protrudes from the opening 117a. It is inserted in the state.

  The size (diameter) (D2) of the through hole 122 of the lower head 121 is preferably larger than the size (diameter) (D1) of the flock hole 112 of the upper head 111, and D2 is about 10% larger than D1. It is particularly preferable to do this. Thereby, the hair bundle 130 planted in the planting hole 112 of the upper head 111 can be easily inserted through the through hole 122 of the lower head 121.

Next, the use (open / close) state of the toothbrush 100 will be described.
FIG. 8 is a schematic view of the upper and lower heads 111 and 121 as viewed from the tip (head) side of the toothbrush 100. 8A shows a state in which the upper and lower heads 111 and 121 are completely closed, FIG. 8B shows a state in which the upper and lower heads 111 and 121 are half opened, and FIG. 8C shows a state in which the upper and lower heads 111 and 121 are opened to the maximum. Each state is shown.

  As shown in FIG. 2, when the user gently grasps the handle 114 of the upper holder 110 and the handle 124 of the lower holder 120 with his / her finger and pushes the lever 125 upward, the upper and lower heads 111 are supported using the protrusion 126 as a fulcrum. , 121 are opened, and the length of the extended portion 130a of the hair bundle 130 inserted through the through hole 122 is shortened (see FIGS. 8B and 8C). When the lever portion 125 is pushed up to the uppermost side, as shown in FIG. 8C, the upper and lower heads 111 and 121 are opened to the maximum, and the length of the extended portion 130a of the hair bundle 130 is minimized. Normally, when the toothbrush 100 is stored, the state of FIG. In addition, the toothpaste can be removed more effectively by using the toothpaste in the state shown in FIG. 8 (c) because the edge of the extended portion 130a is effective. Therefore, it is preferable.

  On the other hand, as shown in FIG. 1, when the user pushes down the protruding portion 124a downward (that is, pushes down the lever portion 125), the upper and lower heads 111 and 121 are closed with the protrusion 126 as a fulcrum, The length of the extended portion 130a of the hair bundle 130 inserted through the through hole 122 is increased. When the lever portion 125 is pushed down to the lowermost side, as shown in FIG. 8A, the upper and lower heads 111 and 121 are completely closed, and the length of the extended portion 130a of the hair bundle 130 is maximized.

  In this way, the user can freely adjust the length of the extended portion 130a of the hair bundle 130, and can brush the teeth with the desired hair bundle length. Further, when the toothbrush 100 is stored in a state in which the length of the extended portion 130a is shortened (see FIG. 8C), the extended portion 130a is restrained by the through hole 122 of the lower head 121, so The tip is less likely to spread from side to side and from falling over. Therefore, at the time of brushing, the tip of the hair bundle 130 comes into contact with the teeth at right angles, so that the plaque can be effectively removed over a long period of time, and the durability is excellent.

  In this specification, the distance between the upper and lower heads 111 and 121 refers to the distance from the lower surface of the upper head 111 to the upper surface of the lower head 121. If the distance between the upper and lower heads 111 and 121 is larger than the total length of the hair bundle 130, the hair bundle 130 is completely pulled out from the through hole 122. From the viewpoint of preventing this, the distance between the upper and lower heads 111 and 121 is It is necessary to make it shorter than the full length of the bundle 130.

  3 to 5 and 7 show examples in which a storage unit 119 for storing a commercially available interdental brush 140 is provided inside the handle 114 of the upper holder 110. When the back of the interdental brush 140 is lightly pressed with a finger, the front is lifted from the storage unit 119, and the interdental brush 140 can be easily removed from the storage unit 119. The toothbrush and the interdental brush are normally stored in different locations. However, in this embodiment, the interdental brush 140 is stored in one toothbrush 100, so that it is sandwiched between the upper and lower heads 111 and 121. It is convenient because it can be used to clean the hair bundle 130 and the clearance between teeth.

  Next, the manufacturing process of the toothbrush 100 will be described. First, the upper holder 110 and the lower holder 120 are prepared, and the left and right protrusions 126 of the lower holder 120 are fitted into the through holes 116 of the upper holder 110 from the inside as shown in FIG. Subsequently, with the upper and lower heads 111 and 121 closed (see FIG. 1 and FIG. 8A), the hair bundle 130 is implanted from the through hole 122 of the lower head 121 into the flocked hole 112 of the upper head 111. About another process, it is the same as that of the manufacturing process of a normal toothbrush.

Second Embodiment
FIG. 9 is a perspective view showing a toothbrush 200 according to the second embodiment of the present invention, and shows a state where the upper and lower heads 211 and 221 are opened. FIG. 10 is a side view showing the toothbrush 200 and shows a state in which the upper and lower heads 211 and 221 are closed. In the toothbrush 200, the upper and lower heads 211 and 221 are normally closed.

  FIG. 11 is a side view showing an exploded state of the toothbrush 200. FIG. 12 is a side view of the toothbrush 200. FIG. 13 is a bottom view of the toothbrush 200. FIG. 14 is a plan view of the toothbrush 200. FIG. 15 is a plan view of the lower holder 220.

  As shown in FIG. 11, the toothbrush 200 includes two members, a rod-shaped upper holder 210 and a Y-shaped lower holder 220. The total length of the lower holder 220 is slightly shorter than the total length of the upper holder 210.

  The upper holder 210 has an upper head 211 having a plurality of flocking holes 112 in which the hair bundle 130 is flocked, a neck 213, and a handle 214 that is long enough to be grasped by a hand. The handle 114 of the toothbrush 100 has a substantially linear shape (see FIG. 3), but the handle 214 of the toothbrush 200 is slightly curved as compared to the handle 114.

  As shown in FIG. 11, the lower holder 220 includes a lower head 221 having a plurality of through holes 122 through which the hair bundle 130 is inserted, a neck 223, and a handle 224. The handle 224 includes a lower handle 224a serving as a lever portion and an upper handle 224b. The upper handle 224b is slightly curved, whereas the lower handle 224a is a lever portion, so that it is greatly curved so that it can be easily grasped by hand, and is longer than the upper handle 224b. The lower holder 220 has a Y shape as a whole.

  As shown in FIG. 11, the lower holder 220 has a knob portion 240 for adjusting the opening, and protrusions 240a (three in the figure) are formed on the side surface. The knob portion 240 is fitted into the opening 217a (see FIGS. 11 and 14) of the upper holder 210. By adjusting the position of the protrusion 240a of the knob portion 240, the openings of the upper and lower heads 211 and 221 can be adjusted. Thereby, the length of the extension part 130a of the hair | bristle bundle 130 can be adjusted to arbitrary length.

  About the other structure of the toothbrush 200, since it is a structure substantially the same as the toothbrush 100 of 1st Embodiment, the same number is attached | subjected to the same member and description is abbreviate | omitted.

Next, the use (open / close) state of the toothbrush 200 will be described.
As shown in FIG. 9, when the user gently grasps the handle 214 of the upper holder 210 and the lower handle 224a of the lower holder 220 with a finger, a load is applied to the shape elasticity (spring property) of the curved upper handle 224b. The upper and lower heads 211 and 221 are opened, and the length of the extended portion 130 a of the hair bundle 130 inserted through the through hole 122 is shortened.

  On the other hand, when the user removes the finger, the upper and lower heads 211 and 221 are naturally closed (see FIG. 10) due to the shape elasticity (spring property) of the curved upper handle 224b, and the hair bundle inserted through the through hole 122 The length of the extended portion 130a of 130 is increased.

<Third Embodiment>
FIG. 16 is a side view showing a toothbrush 300 according to the third embodiment of the present invention, and shows a state in which the upper and lower heads 311 and 321 are opened. FIG. 17 is a side view showing the toothbrush 300 and shows a state in which the upper and lower heads 311 and 321 are closed. In the toothbrush 300, the upper and lower heads 311 and 321 are normally open.

  FIG. 18 is a side view showing an exploded state of the toothbrush 300. FIG. 19 is a bottom view of the toothbrush 300. FIG. 20 is a plan view of the toothbrush 300. FIG. 21 is a plan view of the lower holder 320.

  As shown in FIG. 18, the toothbrush 300 includes two members, a rod-shaped upper holder 310 and a Y-shaped lower holder 320. The total length of the lower holder 320 is slightly shorter than the total length of the upper holder 310.

  The upper holder 310 has an upper head 311 having a plurality of flocking holes 112 in which the hair bundle 130 is flocked, a neck 313, and a handle 314 long enough to be grasped by a hand.

  As shown in FIG. 21, the lower holder 320 includes a lower head 321 having a plurality of through grooves 322 through which the hair bundle 130 is inserted, a neck 323, and a handle 324. As shown in FIG. 18, the handle 324 includes a lower handle 324a serving as a lever portion and an upper handle 324b. The upper handle 324b is slightly curved, whereas the lower handle 324a is a lever portion, so that it is greatly curved so that it can be easily grasped by the hand, and is longer than the upper handle 324b. The lower holder 320 has a Y shape as a whole.

  As shown in FIG. 16, in the toothbrush 300, a small protrusion 326 serving as a fulcrum is formed behind the toothbrush 300. This point is greatly different from the toothbrushes 100 (see FIG. 1) and 200 (see FIG. 9) in which a small protrusion 126 serving as a fulcrum is formed at the approximate center of the toothbrushes 100 and 200.

  Further, in the toothbrush 300, as shown in FIG. 21, the circular through hole 122 (see FIGS. 7 and 15) is also the point that the through hole formed in the head 321 of the lower holder 320 is a slit-like through groove 322. This is different from the toothbrushes 100 and 200.

  As shown in FIG. 18, an opening adjusting knob 340 is attached to a substantially central portion of the lower holder 320 by integral molding. A protruding stopper 340 a is formed at the tip of the knob portion 340. The knob 340 is fitted into the opening 317a (see FIG. 18) of the upper holder 310. By moving the knob portion 340 up and down, the interval between the upper and lower heads 311 and 321 can be adjusted, and the extension portion 130a of the hair bundle 130 can be prevented from falling out of the through groove 322 by the stopper 340a.

  About the other structure of the toothbrush 300, since it is a structure substantially the same as the toothbrush 200 of 2nd Embodiment, the same number is attached | subjected to the same member and description is abbreviate | omitted.

Next, the use (open / close) state of the toothbrush 300 will be described.
In the toothbrush 300, the upper and lower heads 311 and 321 are continuously opened with a constant interval due to the shape elasticity (spring property) of the curved upper handle 324b (see FIG. 16).

  On the other hand, when the handle 314 of the upper holder 310 and the lower handle 324a of the lower holder 320 are lightly grasped with fingers, the upper and lower heads 311 and 321 are closed and the hair bundle 130 inserted through the through groove 322 as shown in FIG. The length of the extended portion 130a becomes longer.

  As described above, the toothbrush 300 according to the third embodiment is different from the toothbrush 200 according to the second embodiment in that the opening / closing mechanism of the upper and lower heads is reversed, and thus the adjustment mechanism for the length of the extended portion 130a of the bristle bundle 130. The reverse is also true.

<Modification>
The toothbrush according to the embodiment has been described above, but the present invention is not limited to this embodiment, and for example, the following modification may be used. Further, the present invention may be a combination of the embodiment, the modified examples, and the modified examples.
In addition, examples that are not described in the embodiments and modifications and design changes that do not depart from the gist are also included in the present invention.

1. Penetration portion As the penetration portion, the through hole 122 is shown in the first embodiment and the second embodiment, and the through groove 322 is shown in the third embodiment. The shape of the penetrating part is not particularly limited as long as the bristles that can be inserted can be inserted.

2. Toothbrush material, etc. The material, shape (length, thickness, thickness, etc.) of each member such as the head, neck, and handle of the toothbrush is not particularly limited, and a commonly used toothbrush can be appropriately employed.

3. The material of the hair bundle, etc. There is no particular limitation on the material of the hair bundle to be implanted in the head of the toothbrush, the width of the hair implantation (single or multi-row implantation), the shape of the hair tip, the hardness of the hair, etc. The toothbrush that is present can be used as appropriate.

4). Interdental brush Although the example which provided the interdental brush 140 was shown in 1st Embodiment, the interdental brush 140 can also be abbreviate | omitted.

100, 200, 300 Toothbrush 110, 210, 310 Upper holder 120, 220, 320 Lower holder 111, 211, 311 Upper head 121, 221, 321 Lower head 122 Through hole 130 Hair bundle 130a Extension part

Claims (5)

A first holder having a first head in which a hair bundle is implanted and a gripping portion ;
A second holder having a penetrating portion of the hair bundle and a second holder having a gripping portion ;
When the gripping part of the first holder and the gripping part of the second holder are gripped , the distance between the first head and the second head varies, and the length of the extended part of the hair bundle from the penetration part Toothbrush characterized by being able to adjust . The protrusion of the second holder is fitted into the opening of the first holder to pivotally support the first holder;
When the grip portion of the first holder and the grip portion of the second holder are gripped, the distance between the first head and the second head varies with the protrusion as a fulcrum, and the hair bundle from the penetrating portion changes . The toothbrush according to claim 1 , wherein the length of the extending portion can be adjusted . The toothbrush according to claim 2 , wherein the protrusion of the second holder is provided on a central portion in the length direction of the second holder or on an end side opposite to the second head . Said second holder has a knob portion for adjusting the length of the extended portion of the tuft from the through portion, the knob portion according to claim 3 which is fitted into the opening of the first holder Toothbrush. The toothbrush according to claim 4 , wherein the knob portion includes a stopper that prevents the extended portion from falling off the penetrating portion.