JPH0136365B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a toothbrush, and particularly to a toothbrush with a built-in dentifrice that can dispense an appropriate amount of dentifrice to brush teeth with a single touch operation.

[Prior art and its problems]

Various types of toothbrushes have been proposed in which a fluid dentifrice is contained inside the toothbrush, and when the teeth are brushed, the dentifrice is pushed out and exuded into the bristles.

However, with conventional products, the toothpaste inserted into the handle is pushed out using a pushing member like a piston, which not only makes the dispensing operation troublesome, but also makes it difficult to get the right amount of toothpaste needed. There is a problem that it is difficult to take out the agent. In addition, the type with a built-in extrusion mechanism in the handle does not have a large capacity to store the toothpaste, and if it is a disposable type, for example, the toothpaste will run out sooner than the service life of the bristles, which is inevitable. There is no choice but to create a structure that allows for replenishment of toothpaste.

On the other hand, in a toothbrush that dispenses a certain amount of dentifrice by dispensing the dentifrice filled in the handle using a pump mechanism built into the toothbrush, when the dentifrice is dispensed, the dentifrice in the handle is Since it is necessary to replace the toothbrush with air, air is sucked in. Therefore, if the dispensing operation is performed while brushing teeth, the dirty water attached to the toothbrush will be sucked in along with the air, making it impractical. There is the problem of becoming a thing.

[Purpose of the invention]

In view of this, it is an object of the present invention to provide a toothbrush with a one-touch structure that provides a completely new structure and operational feeling that can eliminate the drawbacks of the conventional toothbrush by fundamentally improving the conventional toothbrush with a built-in dentifrice. It was done for a purpose.

[Summary of the invention]

The feature of the toothbrush according to the present invention is that the brush itself, which has toothbrush hairs planted on one side of the tip, is connected to the handle part that is held in the hand so that it can be pushed down and operated. By doing so, an appropriate amount of the liquid dentifrice in the dentifrice container, which forms part of the handle, can ooze out onto the flocked surface. It is a toothbrush that does not suck air into the toothbrush and is free from the risk of backflow of sewage, and its structure consists of a hair-planted rod with bristles planted on one side of the tip, and a protruding base on one side of the toothbrush. The operating protrusion is fitted into a vertical groove cut in the circumferential wall of the shaft hole of the bearing portion of the handle body, so that the flocking rod can be freely pushed in the direction of protruding in the axial direction against bias. ,
A dentifrice passage is formed from the base of the flocking rod to the flocking surface, and a dentifrice dispensing mechanism is provided at the base. A first valve body that closes the conduit by elastically pressing against the tip of the conduit that penetrates in the axial direction of the actuating pipe, and a valve seat at the rear end of the handle body that is detachably provided. A second valve element that opens and closes the through hole of the valve seat, a dentifrice suction chamber airtightly formed between these valve elements, and a dentifrice suction chamber formed in an airtight manner between the first and second valve elements in the conduit of the operating pipe. a thin interlocking rod that pushes the first valve body and forcibly bends it to open the valve when the flocking rod is pushed in; and a container that is connected to the handle main body so that the inside thereof can communicate with the first valve body. and a movable bottom body that moves in an airtight manner to follow the dispensing of the dentifrice that is filled inside the container. The liquid toothpaste contained in the toothpaste is made to exude in an appropriate amount onto the hair-planted surface.

[Embodiments of the invention]

The present invention will be described below with reference to embodiments shown in the drawings.

The toothbrush 1 according to the present invention has the following features, as shown in FIG. 1 as a side view of the external appearance and in FIG. 2 as the same plane.
The handle part 2 is composed of a handle part 2 and a flocked rod 3 fitted into the tip of the handle part so as to be slidable in the axial direction.
A toothpaste dispensing mechanism 4 is installed inside.

The handle portion 2 is composed of a handle main body 5 and a dentifrice container 6 connected to the handle main body 5, and a male thread 6A formed on the outer periphery of the opening of the dentifrice container 6 is connected to the handle. It can be freely connected by screwing into a female thread 5A formed on the inner periphery of the base of the main body 5.

The tip of the flocking rod 3 is formed into a flat shape with a rectangular cross section as in the case of a normal toothbrush, and bristles 7 are planted in a required range on one of the flocking surfaces 3A.

The flocking rod 3 has a flocking surface 3 from its base 3B.
A dentifrice passage 8 with a hole structure is formed inside the bristle area A, and this passage 8 either opens directly to the bristle implantation surface 3A or communicates with the bristle openings of the implanted bristle 7, allowing liquid dentifrice to flow through the bristle. It is exuded from the roots of 7.

The base portion 3B of the flocking rod 3 is slidably fitted to the inner peripheral surface of the bearing portion 9 of the handle main body 5 as tightly as possible, and is formed in the axial direction of the peripheral wall of the bearing portion 9. A handle operation protrusion 11 protruding from the outer circumferential surface of the base 3B of the flocking rod 3 is slidably fitted into the vertical groove hole 10 as tightly as possible. By fitting with 11, the flocking rod 3 is prevented from rotating and steadying.

Further, an operating pipe 12 of the toothpaste dispensing mechanism 4 is fitted and fixed to the base 3B of the flocking rod 3, and this operating pipe 12 is connected to a bearing hole formed at the bottom of the bearing part 9 of the handle main body 5. 13 so that it can slide as tightly as possible.

The dentifrice dispensing mechanism 4, as shown in the cross section of an example in FIG. a first valve body 19 that closes the conduit 12C by elastically pressing against the tip of the valve body 19;
A second valve body 20 is provided on the valve seat 16 at the rear end of the handle main body 5 so as to be freely releasable and opens and closes the through hole 18 of the valve seat 16, and a second valve body 20 is formed airtight between the valve bodies 19 and 20. In the conduit 12C between the dentifrice suction chamber 21 and the first and second valve bodies 19, 20, when the flocking rod 3 is pushed in, the first valve body 19 is forced It consists of an interlocking rod 22 that opens the valve, and a movable bottom body 23 that is located inside the container 6 and moves in an airtight manner as the dentifrice is poured out.

A valve portion 15 is formed around the actuating tube 12 and expands in the front and rear directions in a flap shape, and the front and rear ends 15A and 15B of the valve portion 15 are closely connected to the inner circumferential surface of the handle body 5. The front end 15A serves to prevent air and sewage from flowing in from the outer end of the handle body 5, and the rear end 15B serves to prevent toothpaste from entering. Works to prevent leakage.

A valve seat 16 is connected to the spring receiver of the actuating tube 12 and the rear end of the handle main body 5 by press fitting, screwing, etc.
A compression spring 17 is interposed between the actuating tube 12 and the flocking rod 3 to return it to the protruding direction.

The first valve body 19 is located at the tip end surface 12 of the actuating pipe 12.
interposed between A and the inner end of the passage 8 of the flocking rod 3,
Further, the second valve body 20 is installed inside the large diameter portion 16A formed inside the through hole 18 of the valve seat 16, and the first valve body 19 is located at the end of the conduit 12B of the actuating pipe 12. The second valve element 20, which opens and closes between the toothpaste passage 8 and the valve seat 16, opens and closes the through hole 18 of the valve seat 16. 20, and a suction chamber 21 is airtightly formed within the handle body 5.

The first valve body 19 is made of a highly elastic synthetic resin material, and has valve plates 19A and 19A at both ends.
19B, and these valve plates 19A and 19B are connected by a loop-shaped bullet 19C,
One of the valve plates 19A is pressed against a jetty 12B projecting annularly from the end surface of the actuating pipe 12, and the other valve plate 19B is pressed against a step 3C at the end of the flocking rod 3.

A required number (four in the figure) of notches 19D, 19D... having a depth that does not reach the jetty 3C is formed on the periphery of the valve plate 19A.
Similarly, the required number of notches 19D, 19 are formed on the periphery of B.
D... is formed, and this valve plate 19B keeps the passage 8 of the actuating pipe 3 open at all times through the notches 19D, 19D.... Note that the shape and number of the cutout portions 19D are not limited to those shown in the drawings, and may be selected as appropriate.

The second valve body 20 is made of a ball such as a steel ball, and the second valve body 20 is made of a ball such as a steel ball, and is pivoted at the inner edge of a plurality of ribs 16B, 16B, . The ribs 16B, 16 are supported so as to be movable in the direction.
The valve body 2 is secured by the retainers 16C and 16C at the ends of B...
0 is held within the large diameter portion 16A.

The interlocking rod 22 inserted into the conduit 12C of the operating pipe 12 is sufficiently thin compared to the inner diameter of the conduit 12C, and the interlocking rod 22 is in the closed state as shown in FIG. the first and second valve bodies 19,
20, and when the flocking rod 3 is pushed in, the valve plate 19 of the first valve body 19
A comes into contact with the interlocking rod 22, and the second valve body 20 comes into contact with the valve seat 16 and becomes immovable, so the spring 19C of the first valve body 19 is forcibly bent and the valve plate 19A
is left behind, which functions to separate the valve plate 19A from the jetty 12B at the end of the actuating tube 12 and facilitate the flow of toothpaste toward the flocking rod 3 side.

The dentifrice container 6 has a bottomless structure, and as described above, the male thread 6A at the tip thereof is screwed into the female thread 5A of the valve seat 16, thereby connecting it to the handle body 5. Through hole 1 of valve seat 16
8 and the mouth opening 22 of the container 6 are configured to be in communication with each other.

The bottom of the container 6 is constituted by a piston-shaped movable bottom body 22 that is slidable in the axial direction in close contact with the inner peripheral surface of the container 6. The movable bottom body 23 is made of soft synthetic resin or the like, and has sliding edges 23B and 23C that widen in a tulle shape at the axial tip and rear end of the cylindrical portion 23A and have thin tips. These sliding edges come into close contact with the inner peripheral surface of the container 6 to maintain airtightness so that the milky lotion or paste-like dentifrice 24 filled in the container 6 does not leak out.

A small-diameter cylindrical portion 23D is formed at the tip of the cylindrical portion 23A, which can fit into the small-diameter portion 6B in the mouth of the container 6. The amount of toothpaste remaining is now being minimized. In the figure, reference numeral 25 denotes a ring for preventing the movable bottom body from slipping off, which is fitted to the inner circumferential surface of the open rear end of the container 6, and is used as a reinforcing member to prevent the container 6 from deforming due to external forces. This is to prevent the close contact between the moving edges 23B, 23C and the inner peripheral surface of the container 6 from being impaired.

Next, the operation of the above embodiment will be explained.

In the state shown in Fig. 3, the flocking rod 3 can be pushed down by holding the handle 2 through the operating protrusion 11 (right row in Fig. 3), or pushed down by pressing the tip of the flocking rod 3, or By pressing the tip of the rod 3 against something, the flocking rod 3 is pushed along the bearing part 9 of the handle body 5 as shown in the fourth figure, and together with this, the actuating tube 12 is pushed and the handle body is pushed. 5
The second valve body 20 is brought into close contact with the valve seat 16, the through hole 18 is closed, and the valve plate 1 of the first valve body 19 is closed.
9A is pushed by the interlocking rod 22 and separated from the tube end of the actuating tube 12.

Then, when the pressure on the actuating tube 3 is released, the compression spring 17
The actuating tube 3 protrudes and returns to its original state due to the burst attack, and the actuating tube 12 is also returned, creating a negative pressure in the suction chamber 21 in the handle body 5, and the second valve element 20 is sucked up from the valve seat 16. They are separated, and the through hole 18 is opened (as shown in Figure 5). At this time, the negative pressure in the suction chamber 21 causes the bearing hole 13 of the handle main body 5 and the base 3 of the actuating tube 3 to
Air and sewage try to be sucked in through the gap between B and B, but when the actuating tube 12 is returned to its original position by the compression spring 17, the end 15A of the valve portion 15 is tightly pressed against the inner circumferential surface of the handle body 5. and sliding.
The other end 15B is in close contact with the inner circumferential surface of the handle main body 5, and the pipe end of the actuating pipe 12 is sealed by the valve plate 19A of the first valve body 19, so that air and Dirty water never flows back into the suction chamber 21. Therefore, the negative pressure in the suction chamber 21 is used only for pulling up the second valve body 20 and sucking out the dentifrice in the container 6.

In this way, by opening the second valve body 19, the liquid dentifrice 2 in the container 6 passes through the through hole 18 of the valve seat 16.
4 is sucked into the suction chamber 21 in the handle main body 5.

This suction causes the volume inside the container 6 to decrease, and following this decrease, the movable bottom body 23 moves forward in close contact with the inner circumferential surface of the container 6.

When the flocking rod 3 is pressed down again in the same manner as above, the second valve body 20 closes due to the entry of the actuating tube 12, and the toothpaste that has been sucked into the handle body 5 is released into the actuating tube 12. passage 12C, notches 19D, 19D, .
D, 19D... and the dentifrice passage 8 in the working tube 3
An appropriate amount of toothpaste 2 is pushed out through the hair 7 and applied to the root of the hair 7.
4 exudes.

When the pressure on the operating tube 3 is released, the dispensing of the dentifrice 24 is stopped, the second valve body 20 is opened, and the dentifrice 24 is sucked into the suction chamber in the handle body 5 from inside the container 6 again. . Due to this suction, the movable bottom body 23 in the container 6 moves forward in accordance with the amount of dentifrice 24 poured out, similarly to the above.

By performing this operation 2 to 3 times in the initial stage of use, the toothpaste 24 is transferred to the handle main body 5 and the operating tube 1.
Each time the actuating tube 3 is pressed once, one dose of dentifrice 24 oozes out onto the flocked surface 3A, allowing teeth to be brushed. Note that if the amount of exudation is insufficient due to individual differences, two or more pressing operations may be performed.

When the entire amount of toothpaste 24 in the container 6 has been used, the container 6 and the valve seat 16 are unscrewed, a new container 6 is unsealed, and the toothpaste 24 is re-screwed for continued use. can. Furthermore, if there is a risk that the opening of the dentifrice passage 8 that opens to the flocking surface 3A of the flocking rod 3 may dry out during continued use, the entire bristles 7 should be capped as shown by the imaginary line in FIG. 26 should be covered.

Note that the structures of the first and second valve bodies 19 and 20 are not limited to the illustrated embodiment, and valves of other configurations may be used as long as they perform the same function.

〔Effect of the invention〕

As explained above, in the toothbrush of the present invention, the bristle-flocked rod is used as the operation part, and by pushing the bristle-flocked rod down against the handle body, an appropriate amount of toothpaste in the container can be exuded onto the bristle-flocked surface. Not only can you brush your teeth with a single touch, but the amount of toothpaste that oozes out with a single operation is fixed, so you don't have to worry about manually distributing the toothpaste as you would in the past, and you don't have to waste a lot of toothpaste. This prevents the agent from being wasted. In addition, by dispensing the toothpaste by pressing down on the flocked part, an unprecedented feeling of use can be obtained. It is a fun tool to use, can be particularly interesting to infants and children who dislike tooth brushing, and can greatly contribute to inculcating the habit of tooth brushing. Furthermore, since the dentifrice container can be easily attached and detached, the main body of the toothbrush can be used for a long period of time, which is economical.

In particular, in the present invention, when the dentifrice is poured out by pushing the flocking rod, the storage volume of the dentifrice in the container decreases, so there is no need to suck in outside air, and the dentifrice is completely sealed. The toothpaste can be dispensed with the dentifrice, which is extremely desirable from a hygiene perspective.

Furthermore, since the first valve body is forcibly opened via the interlocking rod when the flocking rod is pushed in, the toothpaste in the suction chamber is reliably poured out, and the flocking rod is prevented from rotating relative to the handle body by the rotation prevention means. Since the brush is designed so that it does not move, the direction of the brush does not change during tooth brushing, and the number of parts required for manufacturing is small, making it easy to manufacture.

[Brief explanation of drawings]

Fig. 1 is a side view showing the external appearance of the toothbrush according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a partially cutaway enlarged cross-sectional view of the main part, and Fig. 4 shows the toothbrush in a state where the hair flocking rod is pushed in. 5 is a sectional view of the same flocked rod in a restored state, FIG. 6 is a side view of the second valve body, and FIGS. 7A and 7B are left and right end views of the same. 1...Toothbrush, 2...Handle portion, 3...Flocking rod, 4...Toothpaste dispensing mechanism, 5...Handle body, 6
... Toothpaste container, 7 ... Hair, 8 ... Toothpaste passage,
9...Bearing portion, 10...Vertical groove hole, 11...Operation protrusion, 12...Operation pipe, 13...Bearing hole, 15...
Valve part, 16... Valve seat, 17... Compression spring, 18...
...Through hole, 19...First valve body, 20...Second valve body, 21...Suction chamber, 22...Interlocking rod, 23...
...Movable bottom body, 24...Toothpaste.

Claims (1)

[Claims] 1. The base of the flocking rod with hair implanted on one side of the tip part is fitted into the vertical groove cut into the shaft hole circumferential wall of the shaft hole of the bearing part of the handle body. Together, the flocking rod is formed so as to be freely pushed in against the bias in the direction of protruding in the axial direction, and a dentifrice passage is formed from the base of the flocking rod to the flocking surface, and a dentifrice passage is formed in the base. A spouting mechanism is provided, and the spouting mechanism is elastically pressed against an operating pipe connected to the base of the flocking rod and a tip of a pipe passing through the working pipe in the axial direction, thereby discharging the pipe. a first valve body that closes the valve body; a second valve body that is detachably provided on the valve seat at the rear end of the handle body and that opens and closes the through hole of the valve seat; and a second valve body that opens and closes the through hole of the valve seat; A valve is provided in the conduit of the actuating pipe between the formed dentifrice suction chamber and the first and second valve bodies, and when the flocking rod is pushed in, the first valve body is pushed and forcibly flexed. A thin interlocking rod that opens the valve at least once, and a movable bottom body that moves in an airtight manner in accordance with the dispensing of dentifrice that is contained in a container that is connected to the handle body so that the inside can communicate with the handle body. A toothbrush comprising: an appropriate amount of liquid dentifrice in the container oozes out onto the bristle surface by pushing down the bristle rod against bias.