JP2022019189A - toothbrush - Google Patents

Abstract

To provide a toothbrush that can greatly reduce an amount of plastic garbage.SOLUTION: A toothbrush head 1 includes a roughly rectangular plate piece part 3 and a large number of bristles. In the plate piece part 3, a slit 5 is formed from one short side 3a of the roughly rectangle, in a direction to separate thickness. Also, a shank 7 is provided in a direction orthogonally crossing the opposite plane of the slit 5. With a base end connected, the toothbrush is provided with a pair of clipping leg pieces 11 which form the slit that opens legs in a narrow V-shape toward the tip end. In addition, it is provided, at each tip of the clipping leg pieces 11, with a metallic retainer plate 12 in which a small recessed part 13 for gripping the shank 7 is formed. The short side 3a and the long side 3b of the roughly rectangular plate piece part 3 of the toothbrush head 1 are selectively made to pressurize repulsively on a tip end face 2a of a handle part 2. The toothbrush head 1 is thereby structured to be held freely changeably between a linear extended posture and an orthogonal posture from the handle 2.SELECTED DRAWING: Figure 3

Description

The present invention relates to a toothbrush.

Generally, in a toothbrush, a brush is planted at the tip of a handle (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2020-65613

However, the toothbrush described in Patent Document 1 has a problem that when the brush is damaged by the use of the toothbrush, the entire toothbrush is discarded (necessarily, the handle portion that can still be used is also discarded). Therefore, an object of the present invention is to provide a toothbrush capable of reducing plastic dust.

The toothbrush according to the present invention has a toothbrush head and a handle portion that are detachably configured.
Further, the toothbrush head is configured to be freely switched from the handle portion to a linear extension posture and an orthogonal posture.
Further, the head of the toothbrush is composed of a substantially rectangular plate piece portion and a large number of flies, and a slit is formed in the plate piece portion in a direction of separating the thickness from one short side of the substantially rectangular plate. At the same time, a shaft portion is provided in a direction orthogonal to the facing plane of the slit, a axial hole portion is provided from the tip surface of the handle portion, the base ends are connected, and a narrow V shape is formed toward the tip. A pair of sandwiched leg pieces forming a slit to open the legs are provided, and a metal holding plate having a small concave portion for gripping the shaft portion is provided at each tip of the sandwiched leg pieces, and further, the handle portion is provided. A coil spring for elastically pulling the metal holding plate toward the back of the axial hole is provided in the back of the axial hole, and the substantially rectangular shape of the toothbrush head is described above. The short and long sides of the plate piece are selectively pressed against the tip surface of the handle, and the toothbrush head is placed in a linear extension posture and an orthogonal posture from the handle. , It is configured to be held in a switchable manner.

Further, each of the sandwiched leg pieces of the metal holding plate is provided with a stepped portion for holding a drawer state that is locked to the tip surface of the handle portion.
Further, at the intermediate position of the handle portion, a switching holding mechanism for selecting and holding a linear holding posture and a folded holding posture is provided.

According to the toothbrush of the present invention, when the brush is damaged by the use of the toothbrush, only the part of the brush (toothbrush head) can be replaced with a new one (rather than discarding the entire toothbrush). And the amount of plastic waste can be significantly reduced. Further, in the scene of long-term care, when the caregiver brushes the teeth of the care recipient, the caregiver can easily brush the teeth. In addition, it can be folded in half and placed in a pocket or bag for easy portability.

It is a front view which shows one Embodiment of this invention. It is an enlarged sectional view of a main part. It is an enlarged sectional view of a main part. It is a figure which shows the detached state of the toothbrush head, (A) is an enlarged partial sectional view of the main part, (B) is the sectional view of the main part of FIG. 4 (A), (C) is FIG. 4 (A). It is an end view of EE. It is a front view which shows the metal holding plate. It is an enlarged sectional view of a main part. It is an enlarged sectional view of the main part which shows the swinging action. It is a cross-sectional view which shows the plate piece part, (A) is the cross-sectional view when the short side is straight, and (B) is the cross-sectional view when the short side is arcuate. It is a figure which shows the linear holding posture, (A) is a partially broken whole view, (B) is an enlarged sectional view of a main part. It is a figure which shows the folding holding posture, (A) is a partially broken whole view, (B) is an enlarged sectional view of a main part. It is an enlarged cross-sectional view of a main part, (A) is an enlarged cross-sectional view of a main part showing a dead point, (B) is an enlarged cross-sectional view of a main part showing a state in the middle of bending, and (C) is an enlarged main part showing a dead point. It is a sectional view.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment. 1 and 2 show an embodiment of the present invention. A toothbrush head 1 and a handle 2 are provided. The toothbrush head 1 is composed of a substantially rectangular plastic plate piece 3 and a large number of flocked (brushes) 4. The "substantially rectangular shape" includes a shape with R-shaped chamfers at the corners as shown in FIG. 8 (A) and an oval shape as shown in FIG. 8 (B). The toothbrush head 1 and the handle 2 are detachably configured.

3 and 4 show a state in which the toothbrush head 1 and the handle 2 are separated from each other. The plate piece portion 3 is provided with a slit 5 formed in a direction of separating the thickness from one short side 3a side of a substantially rectangular shape, and a shaft portion 7 is provided in a direction orthogonal to the facing plane 6 of the slit 5. As shown in FIG. 8B, when the plate piece portion 3 has an oval shape, the “short side” is assumed to be an arc portion.

As shown in FIG. 5, a metal holding plate 12 having a pair of sandwiched leg pieces 11 which are connected to each other and form a slit 10 which opens a narrow V-shaped leg toward the tip 9 is provided. The metal holding plate 12 is manufactured, for example, by punching out stainless steel. A semi-circular small recess 13 for gripping the shaft portion 7 (see FIG. 4) is formed at each tip 9 of the sandwiching leg piece 11.

Each of the sandwiching leg pieces 11 of the metal holding plate 12 is provided with a stepped portion 14 for holding the drawer state, which is locked to the tip surface 2a of the handle portion 2 (see FIGS. 3 and 6 and the like).

As shown in FIGS. 2 and 3, the axial hole portion 15 is provided from the tip surface 2a of the handle portion 2. At the back of the axial hole portion 15 of the handle portion 2, a coil spring 16 for elastically pulling the metal holding plate 12 in the inner direction of the axial center direction hole portion 15 is provided. It is also preferable to have a metal cylinder (not shown) on the inner surface side of the axial hole portion 15.

Next, the attachment / detachment action will be described. In order to separate the toothbrush head 1, the drawer state holding stepped portion 14 for moving the toothbrush head 1 in the direction of pulling it away from the handle 2 (that is, the direction of arrow Y ₂ in FIG. 2) is the tip of the handle 2. When moving to the surface 2a, as shown in FIG. 3, the sandwiched leg piece 11 of the metal holding plate 12 is opened in a narrow V shape by the elastic restoring force F ₀ . Then, the two small recesses 13 of the metal holding plate 12 are separated from each other, the shaft portion 7 held by the two small recesses 13 is separated, and the toothbrush head 1 is separated from the handle portion 2. At this time, the stepped portion 14 for holding the drawer state is locked to the tip surface 2a of the handle portion 2.

To attach the toothbrush head 1 to the handle 2, the toothbrush head is removed from the toothbrush head 1 and the handle 2 shown in FIGS. 3 and 4 in the direction of arrow Y ₁ in FIGS. 3 and 4. 1 is inserted into the handle 2 (that is, the tip of the metal holding plate 12 is inserted into the slit 5). By pressing the metal holding plate 12 in the direction of arrow P in FIG. 6 (direction orthogonal to the longitudinal direction of the handle portion 2), the stepped portion 14 for holding the drawer state and the tip surface 2a of the handle portion 2 are locked. When the state is released, as shown in FIG. 2, the metal holding plate 12 is elastically pulled toward the back of the axial hole portion 15 by the coil spring 16 (with the elastic force F ₁ shown in FIG. 6). .. At this time, the narrow V-shaped slit 10 closes.

As shown in FIG. 7, the short side 3a and the long side 3b of the substantially rectangular plate piece portion 3 of the toothbrush head 1 are selectively pressed against the tip surface 2a of the handle portion 2 to elastically press the toothbrush head. The portion 1 is configured to be freely switched from the handle portion 2 to a linear extension posture and an orthogonal posture. That is, a tensile elastic force acts indirectly on the toothbrush head 1 from the metal holding plate 12 via the shaft portion 7, so that the plate side portion 3 comes into close contact with the tip surface 2a of the handle portion. As shown in FIGS. 4 and 7, a protrusion forming member 18 having a part (protrusion 17) protruding from the axial hole 15 is inserted and fixed to the handle 2. The protrusion 17 has an arc portion 19 in front view (when viewed from the brush side). The plate piece portion 3 has three semicircular recesses 20 on the outer peripheral surface that are detachably engaged (fitted) with the protrusion 17.

Next, the swinging action of the toothbrush head 1 will be described. As shown in FIG. 7, the toothbrush head 1 can be swung by 90 ° on each side (180 ° in total). The protrusion 17 and the recess 20 are locked (fitted) to securely hold a predetermined angle. There is a clicking sound when the protrusion 17 fits into the recess 20 due to the swing. As shown in FIG. 8A, the handle portion 2 and the plate piece portion 3 are configured to be in surface contact (surface contact) in any of the swing-fixed states (three shown in FIG. 7). By having the portion), it is possible to more reliably prevent the toothbrush head 1 from rattling while brushing the teeth.

As shown in FIGS. 9 and 10, a switching holding mechanism Q for selecting and holding a linear holding posture (FIG. 9) and a folded holding posture (FIG. 10) is provided at an intermediate position of the handle portion 2. ing. The handle portion 2 includes a plastic first half body 21 on the base end side and a plastic second half body 22 on the tip end side. The first half body 21 and the second half body 22 are connected via a rectangular parallelepiped plastic intermediate member 23.

Specifically, the first half body 21 and the intermediate member 23 are pivotally attached by the pivot shaft 24, and the second half body 22 and the intermediate member 23 are pivotally attached by the pivot connection shaft 25. The intermediate member 23 has a hole 26 in which the pivot shaft 24 is slidable and a hole 27 in which the pivot shaft 25 is slidable. The pivot shaft 24 is inserted through the hole 26, and the pivot shaft 25 is inserted through the hole 27. It has a coil spring 28 that applies an elastic force in a direction that attracts the pivot shaft 24 and the pivot shaft 25. The intermediate member 23 has a hole portion 29 for accommodating a coil spring that communicates with the hole portion 26 and the hole portion 27. The coil spring 28 is stored in the coil spring storage hole 29.

A notch recess 30 is formed at the tip of the first half body 21, and a notch recess 31 is formed at the base end of the second half body 22. The notch recess 30 has a parallel surface 32 substantially parallel to the longitudinal direction of the handle portion 2 and a vertical surface 33 substantially orthogonal to the parallel surface 32. The notch recess 31 has a parallel surface 34 substantially parallel to the longitudinal direction of the handle portion 2 and a vertical surface 35 substantially orthogonal to the parallel surface 34. A brush storage recess 40 for storing the brush 4 of the toothbrush head 1 is formed on the base end side of the first half body 21.

Next, the folding (folding in half) action of the handle portion 2 will be described. When the handle portion 2 is bent, for example, it bends through the following states. As shown in FIG. 11A, the corner portion 36 of the second half body 22 gets over the tip surface 37 of the first half body 21 (beyond the dead point). Then, as shown in FIG. 11B, the tip surface 37 of the first half body 21 and the outer surface 38 of the second half body 21 are in contact with each other. After that, as shown in FIG. 11C, the corner portion 39 of the first half body 21 gets over the outer surface 38 of the second half body 22 (beyond the dead point). Then, it becomes the folding holding posture (folded in half) shown in FIG. The above-mentioned folding order is an example, and it can be folded by another order. For example, the first half body 21 and the second half body 22 can be swung with respect to the intermediate member 23 substantially simultaneously.

In the present invention, the design can be changed, and for example, the protrusion forming member 18 and the second half body 22 may be formed as an integral body. Further, the first half body 21 and the second half body 22 may be made of wood. The plate piece 3 may be made of wood.

As described above, in the present invention, the toothbrush head 1 and the handle 2 are detachably configured. Therefore, when the brush 4 is damaged by the use of the toothbrush, the toothbrush (rather than discarding the entire toothbrush) Only the head 1 can be replaced with a new one. And the amount of plastic waste (so-called waste plastic) can be significantly reduced. For example, waste plastic can be reduced by 90%. Further, since only the toothbrush head 1 can be sequentially replaced and used for a long period of time (for example, 10 years), it is economical for the user.

Further, since the toothbrush head 1 is configured to be freely switched from the handle 2 to a linear extension posture and an orthogonal posture, the caregiver brushes the teeth of the care recipient in the care scene. If necessary, the toothbrush head 1 can be easily brushed by switching between the linear extension posture and the orthogonal posture. In particular, if the toothbrush head 1 is in an orthogonal posture, it is possible to easily brush the teeth of the care recipient in a sleeping state.

Further, the toothbrush head 1 is composed of a substantially rectangular plate piece portion 3 and a large number of fleece plants 4, and the plate piece portion 3 has a slit 5 having a thickness from the one short side 3a side of the substantially rectangular shape. Along with being formed in a direction of separation, a shaft portion 7 is provided in a direction orthogonal to the facing plane 6 of the slit 5, an axial hole portion 15 is provided from the tip surface 2a of the handle portion 2, and a base end 8 is provided. Has a pair of sandwiched leg pieces 11 forming a slit 10 that opens in a narrow V shape as it goes to the tip 9, and grips the shaft portion 7 at each tip 9 of the sandwiched leg piece 11. A metal holding plate 12 having a small recess 13 formed therein is provided, and a metal holding plate 12 is provided in the depth direction of the axial hole portion 15 in the axial center direction hole portion 15 of the handle portion 2. The coil spring 16 for elastically pulling into the toothbrush head 1 is internally provided, and the short side 3a and the long side 3b of the substantially rectangular plate piece portion 3 of the toothbrush head 1 are selectively selected to select the short side 3a and the long side 3b of the handle portion 2. The toothbrush head 1 is elastically pressed against the tip surface 2a so as to be held in a linear extension posture and an orthogonal posture from the handle portion 2 so as to be switchable when brushing teeth. , The toothbrush head 1 can be prevented from rattling with respect to the handle 2. Further, if necessary, the linear extension posture and the orthogonal posture of the toothbrush head 1 can be easily switched. In particular, if the toothbrush head 1 is in an orthogonal posture, it is possible to easily brush the teeth of the care recipient in a sleeping state.

Further, since each of the sandwiching leg pieces 11 of the metal holding plate 12 is provided with a stepped portion 14 for holding the drawer state to be locked to the tip surface 2a of the handle portion 2, the metal holding plate 12 is pulled out. The state can be reliably maintained.

Further, since the switching holding mechanism Q for selecting and holding the linear holding posture and the folding holding posture is provided at the intermediate position of the handle portion 2, the whole can be folded in half and put into a pocket or a bag. It can be put in and easily carried. It is suitable for use in desired places such as schools, workplaces, and toilets.

1 Toothbrush head 2 Handle 2a Tip surface 3 Plate piece 3a Short side 3b Long side 4 Flocking (brush)
5 Slit 6 Facing plane 7 Shaft 8 Base end 9 Tip
10 slit
11 Sandwiched leg piece
12 Metal holding plate
13 Small recess
15 Axial hole
16 Coil spring Q switching holding mechanism

In the toothbrush according to the present invention, the toothbrush head and the handle portion are detachably configured , and the toothbrush head is held so as to be switchable between a linear extension posture and an orthogonal posture from the handle portion. The head of the toothbrush is composed of a substantially rectangular plate piece portion and a large number of flies, and the plate portion has a direction in which a slit separates the thickness from one short side of the substantially rectangular plate portion. A shaft portion is provided in a direction orthogonal to the facing plane of the slit, a shaft center direction hole portion is provided from the tip surface of the handle portion, the base end is connected, and the shaft portion is narrowed as it goes to the tip end. It has a pair of sandwiched leg pieces forming a slit that opens in a V shape, and is provided with a metal holding plate having a small recess for gripping the shaft portion at each tip of the sandwiched leg pieces. A coil spring for elastically pulling the metal holding plate in the depth direction of the axial hole portion is provided in the back of the axial hole portion of the handle portion, and the above-mentioned omission of the toothbrush head. The short and long sides of the rectangular plate piece are selectively pressed against the tip surface of the handle, and the toothbrush head is orthogonal to the linear extension posture from the handle. It is configured to be held in a state-like posture so as to be switchable.

Claims (5)

Toothbrush A toothbrush characterized in that the head (1) and the handle (2) are detachably configured. The toothbrush according to claim 1, wherein the toothbrush head (1) is freely held in a linear extension posture and an orthogonal posture from the handle portion (2). The toothbrush head (1) is composed of a substantially rectangular plate piece (3) and a large number of flocked hairs (4).
A slit (5) is formed in the plate piece portion (3) from the one short side (3a) side of the substantially rectangular shape in a direction of separating the thickness, and the facing plane (6) of the slit (5) is formed. A shaft portion (7) is provided in a direction orthogonal to the above.
An axial hole portion (15) is provided from the tip surface (2a) of the handle portion (2).
It has a pair of pinching leg pieces (11) that form a slit (10) in which the base end (8) is connected and opens in a narrow V shape as it goes toward the tip end (9), and the pinching leg piece (11). ), A metal holding plate (12) having a small recess (13) for gripping the shaft portion (7) is provided at each tip (9).
Further, in the back of the axial hole portion (15) of the handle portion (2), the metal holding plate (12) is elastically pulled in the inner direction of the axial hole portion (15). It has a coil spring (16) inside,
The short side (3a) and the long side (3b) of the plate piece portion (3) having the substantially rectangular shape of the toothbrush head (1) are selectively placed on the tip surface (2a) of the handle portion (2). The toothbrush according to claim 2, wherein the toothbrush head (1) is elastically pressed to be held in a linear extension posture and an orthogonal posture from the handle portion (2). .. Each of the sandwiched leg pieces (11) of the metal holding plate (12) is provided with a stepped portion (14) for holding a drawer state that is locked to the tip surface (2a) of the handle portion (2). The toothbrush according to claim 3. The toothbrush according to claim 3 or 4, wherein the toothbrush according to claim 3 or 4 is provided with a switching holding mechanism (Q) for selecting and holding a linear holding posture and a folded holding posture at an intermediate position of the handle portion (2).

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