KR20000017721U - Toothbrush - Google Patents

Abstract

The present invention relates to a toothbrush, the toothbrush of the present invention has a receiving space (22) open rear, the handle 20 is formed on the side of the guide path open in the longitudinal direction from the rear rear open; Toothpaste storage container (50) made of a bellows is accommodated in the receiving space 22 of the handle 20 to supply toothpaste, folded as the toothpaste is consumed, the volume of which is reduced; By pressing the toothpaste storage container 50 from the rear of the toothpaste storage container 50, a piston (62) protruding outward through the guideway 24 of the handle 20 on one side ( 60); A cap 70 for closing the open rear of the handle 20; A head 30 formed integrally with the handle 20 and having a discharge port 35 communicating with the receiving space 22 of the handle 20 to discharge toothpaste on one side thereof; A plurality of cilia (40) which are planted around the outlet (35) of the head (30); It is made of a foreign matter inflow prevention means for preventing foreign matter from entering the head 30 through the discharge port 35.

Description

Toothbrush

The present invention relates to a toothbrush for cleaning teeth, and more particularly, to a toothbrush to supply to the cilia, if necessary, while storing the toothpaste in a fixed amount.

As is well known, toothbrushes are used as a tool to clean human teeth to remove food waste, plaque and harmful bacteria, which are the main causes of gum disease and tooth decay disease. This toothbrush has a handle having a predetermined length enough to be grasped by a user, and a head formed at one end of the handle. In addition, one side of the head is planted with soft cilia to clean the teeth, which are usually made of thin and long nylon.

On the other hand, when brushing with a toothbrush as described above, toothpaste is usually used together, such toothpaste is usually stored in a tube that can be stretched and deformed so that it can be squeezed out as needed, and constituents such as fluorine and abrasives It facilitates plaque removal of harmful bacteria and teeth in the oral cavity.

Therefore, by using the toothbrush and toothpaste, the user squeezes a predetermined amount of toothpaste onto the cilia of the head while holding the handle of the toothbrush, and then applies an appropriate force to the handle to contact and rub the cilia on the teeth and to the surface of the tooth. Wipe off any plaque and food debris.

However, such a conventional toothbrush has a very cumbersome drawback because the toothpaste is stored in a separate container and buried in the cilia and then brushed. In particular, the travel or business trip had a inconvenience to be equipped with a toothbrush and toothpaste separately.

In addition, it is generally desirable to use only the minimum amount of toothpaste enough to sufficiently clean the teeth. In the conventional art, the user may use a toothpaste that is arbitrarily stored in a tube body. there was. This problem, in turn, has led to an increase in toothpaste consumption, resulting in economic losses to consumers.

On the other hand, in order to solve this problem, a number of toothbrushes having a function of supplying toothpaste to the cilia have been proposed. As an example, US Pat. Nos. 5,584,593 and 5,039,244 form a hollow portion in which the volume is increased and decreased by a knob while storing the toothpaste in the handle of the toothbrush, and the head of the toothbrush is planted in the head while communicating with the hollow portion. A toothbrush has been proposed to form a communication hole through which the discharge port is exposed between the cilia, which allow the toothpaste to be discharged from the discharge port by moving or rotating the knob.

On the other hand, the toothbrush of the US patent has a great advantage compared to the conventional in that it does not have to have a toothpaste stored in a separate container, but its configuration is very complicated, assembly is very difficult to reduce productivity, It exposed various problems such as raising the manufacturing cost. That is, in order to discharge the toothpaste of the hollow part at a predetermined pressure, a spline is first installed in the hollow part, and a piston for pressing the toothpaste while moving along the spline is provided in the spline, and a communication hole connecting the head and the hollow part is provided. There are many components, such as a shut-off valve that opens and closes the communication hole, and complicated assembly was a problem. This problem was to act as a significant cause to lower the productivity of the product, and to increase the production cost.

In addition, the biggest problem of the toothbrush described above is that toothpaste continues to bleed out from the outlet of the head and the tooth cleaning is not performed properly, and in particular, the toothpaste and foreign matter flows backward through the outlet to contaminate the toothpaste stored in the hollow part. Problems such as hardening occurred.

Therefore, the present invention was devised to solve the above problems, the purpose of which is to store the toothpaste in the toothbrush while supplying the toothpaste of the quantitative to the toothbrush as needed, the need to carry a separate toothpaste container It is to provide a toothbrush to reduce the inconvenience and to maximize the user's convenience.

Another object of the present invention is to provide a toothbrush that can simplify the configuration of the toothbrush having a toothpaste supply function to reduce the production cost as well as to improve productivity, such as shortening the assembly time.

Another object of the present invention is to provide a toothbrush that can adequately supply as much toothpaste as necessary for the cilia of the toothbrush and to prevent the toothpaste discharged from the head of the toothbrush from flowing back through the outlet to contaminate or harden the stored toothpaste. It is to provide a toothbrush to prevent that.

1 is an exploded perspective view showing an embodiment of a toothbrush according to the present invention,

Figure 2 is a longitudinal cross-sectional view showing a coupling state of FIG.

3 is an operation of FIG.

Figure 4 is a view showing in detail the head of one embodiment of a toothbrush according to the present invention, Figure 5 is a cross-sectional view taken along line A-A of Figure 4,

Figure 6 is a front view of the head showing another embodiment of the foreign matter inflow prevention means of the toothbrush according to the present invention,

7 and 8 is a cross-sectional view and operation of the B-B line of FIG.

9 is an exploded perspective view showing another embodiment of a toothbrush according to the present invention,

10 and 11 are longitudinal cross-sectional views showing the coupled state of Figure 9 and its operation diagram.

♣ Explanation of symbols for the main parts of the drawing ♣

10: toothbrush 20,110: handle

22,112: Accommodating space 24: Guide

24a: set groove 30,120: head

32: pressure chamber 36: sealing film

36a: incision 40,130: cilia

50,140: toothpaste storage container 60,150: piston

62: Knob 64: Operating Groove

65: stopper 70: cap

160: feed axis 162: knob

Features of the present invention to achieve this object has a rear open receiving space, the side of the handle is formed in the longitudinal opening from the rear rear open; A toothpaste storage container made of bellows which is stored in the receiving space of the handle to supply toothpaste and is folded as the toothpaste is consumed and its volume is reduced; A piston which presses the toothpaste storage container from the rear of the toothpaste storage container, and a knob protruding outward through the guide path of the handle on one side; A cap for closing the open rear of the handle; A head which is formed integrally with the handle and has a discharge hole configured to communicate with the receiving space of the handle and discharge toothpaste on one side thereof; A plurality of cilia planted around the discharge port of the head; It is made of a foreign matter inflow prevention means for preventing foreign matter from entering the head through the discharge port.

As another feature of the present invention, the handle having a rear receiving space; A toothpaste storage container made of bellows which is stored in the receiving space of the handle to supply toothpaste and is folded as the toothpaste is consumed and its volume is reduced; A piston for pressurizing the toothpaste reservoir from the rear of the toothpaste reservoir; A feed shaft for moving the piston by screwing and rotating to penetrate the piston; A knob integrally formed at one end of the feed shaft and rotatably installed at an open rear of the handle to rotate the feed shaft; A head integrally formed at one end of the handle, and at one side thereof, a discharge hole configured to communicate with an accommodation space of the handle to discharge toothpaste; A plurality of cilia planted around the discharge port of the head; It is made of a foreign matter inflow prevention means for preventing foreign matter from entering the interior of the head through the discharge port.

Hereinafter, preferred embodiments of the toothbrush according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing an embodiment of a toothbrush according to the present invention, Figure 2 is a longitudinal cross-sectional view showing a coupling state of Figure 1, Figure 3 is an operation of FIG. In addition, Figure 4 is a view showing in detail the head of an embodiment of the toothbrush according to the present invention, Figure 5 is a cross-sectional view taken along line A-A of FIG. According to this, the toothbrush 10 is largely implanted into the handle 20 having a receiving space 22, the head 30 integrally formed on one end of the handle 20, and one side of the head 30 It can be seen that the cilia 40, the toothpaste storage container 50 for storing the toothpaste, and the piston 60 for pressing the toothpaste storage container 50.

Looking at this in detail, the handle 20 of the toothbrush 10 is formed relatively long so that the user can conveniently hold by hand, there is a receiving space 22 is formed inside the rear. The accommodation space 22 communicates with the head 30 by the passage 20a, and one end of the passage 20a is formed between the cilia 40 planted in the head 30. And the side of the handle 20 is formed with a guide path 24 that is open by a predetermined depth from the rear of the opening, the one side of the guide path 24 is formed so that a plurality of stop grooves (24a) are connected in series. In addition, the scale 25 is formed on one side of the guide path 24, which is to supply the quantitative toothpaste to the head 30 by accurately measuring the moving distance of the piston (60).

On the other hand, in the receiving space 22 of the handle 20, the toothpaste storage container 50 for storing the toothpaste, and the piston 60 for pressing the toothpaste storage container 50 is sequentially inserted from the rear open, finally A cap 70 is covered behind the opening.

Toothpaste storage container 50 is folded as the toothpaste is consumed as shown in Figure 1 is reduced in volume and consists of a bellows capable of elastic deformation, one side is formed with an outlet 52 for discharging the toothpaste. The outlet 52 is configured to communicate with each other by being inserted into the passage 20a at a predetermined depth when the toothpaste storage container 50 is inserted into the accommodation space 22. On the other hand, the toothpaste storage container 50 may be formed in a single-use, it may be permanently used to receive toothpaste from the outside through the outlet (52).

And the piston 60 is to press the toothpaste storage container 50 in the rear of the toothpaste storage container 50, and serves to discharge the toothpaste to a predetermined pressure by reducing its volume. This piston 60 has a knob 62 on one side. The knob 62 is configured to move left and right along the guide path 24 while protruding to the outer surface through the guide path 24 when the piston 60 is inserted into the accommodation space 22. It serves as a handle that allows the user to move the piston (60).

In addition, the knob 62 is provided with a piston stop means for stopping the piston 60 at a predetermined position. That is, an operation groove 64 is formed on one side of the knob 62, and the stopper 65 is fitted into the operation groove 64. The stopper 65 is a leaf spring having an elastic force while being bent at a predetermined angle, and installed in the actuating groove 64. The stopper 65 is stopped when the piston 60 is inserted into the receiving space 22, and the knob 62 moves along the guide path 24 while releasing from the operating groove 64. It slides along the groove 24a and is inserted into the stop groove 24a of the guide path 24 when the knob 62 is stopped at a predetermined position to limit the movement of the piston 60.

On the other hand, if the user applies the predetermined force to move the piston 60 to move the knob 62 to the front and rear of the handle 20, the stopper 65 having a predetermined elastic force to guide the path 24 According to repeating the haunting from the working groove 64 to move forward, backward to allow the movement of the piston (60). On the other hand, the rear of the open handle 20 is configured to cover the cap 70 to prevent the separation of the piston (60).

On the other hand, the head 30 formed on one end of the handle 20 is made of a resin, for example, ABS resin (Acrylonitrile Butadiene Styrene Resin) by molding the material, a plurality of follicles 31 on one side Is formed, cilia (40) are planted in these hair follicles (31). The cilia 40 are made of a nylon material, so that teeth and gums are not damaged, and are smooth and thin so as to clean the gaps between the teeth. 4 and 5, the cover 33 is installed at the other side of the head 30 so that the pressure chamber 32 connected to the passage 20a of the handle 20 is formed. Outward from the 32, that is, the discharge port 35 is formed between the cilia (50). This discharge port 35 becomes the final discharge port of the toothpaste which passed the passage 20a of the handle 20 and the pressure chamber 32 of the head 30. The discharge port 35 is preferably formed long along the longitudinal direction of the head 30 so that the toothpaste is naturally discharged as shown in FIG.

On the other hand, the pressure chamber 32 of the head 30 is provided with a foreign matter inflow prevention means for preventing the toothpaste discharged to the discharge port 35 flows back into the pressure chamber 32. The foreign matter inflow preventing means has a sealing film 36 covering one side of the pressure chamber 32 of the head 30, that is, the side wall on which the discharge port 35 is formed. The sealing film 36 is formed to a predetermined thickness, is formed of a rubber material capable of elastic deformation, and is formed with a cutout portion 36a formed along the discharge port 35. The cutout 36a is a discharge passage of the toothpaste, and as shown in FIG. 5, the end portion thereof is always abutted toward the discharge port 35, and is thinner toward the end. This is to facilitate the discharge of toothpaste and to prevent the backflow of foreign substances from the outside. Accordingly, the toothpaste passes through the passage 20a and the pressure chamber 32 of the handle 20 and passes through the sealing film 36, and is finally discharged to the outside through the discharge port 35. At this time, the foreign matter backflow from the outside is prevented by the sealing film 36 to prevent contamination or curing of the toothpaste.

On the other hand, Figure 6 to Figure 8 shows another embodiment of the foreign matter inflow prevention means and its operation diagram. Accordingly, in the foreign material inflow preventing means of another embodiment, unlike the above-described embodiment, a plurality of discharge holes 35 are formed in a conical hole shape, and the cover 38 replaces the sealing film 36 with the conical hole shape. It can be seen that the discharge port 35 is selectively opened or closed. Looking at this in detail, the discharge port 35 of the conical hole shape is formed on one side of the head 30, the cover 38 which is elastically deformable is installed on the other side of the head 30 so that the pressure chamber 32 is formed. The discharge port 35 is configured to be narrower toward the outside, and a plurality of fingers 38a for opening or closing the discharge hole 35 are protruded on one side of the cover 38. The tip of the finger 38a is conical to be in close contact with the discharge hole 35 in the shape of a conical hole. And when the finger 38a is in close contact with the discharge port 35, the end thereof is configured to protrude to the outside of the discharge port 35. This is for completely pushing out the toothpaste which exists around the discharge opening 35.

On the other hand, when the toothpaste is introduced into the pressure chamber 32 through the passage (20a) of the handle 20 by this configuration, as shown in Figure 7 by the discharge pressure of the toothpaste cover 38 is deformed while blowing out This increases the volume of the pressure chamber 32. At this time, the finger 38a of the cover 38 is spaced apart from the discharge hole 35 of the head 30 by a predetermined distance to open the discharge hole 35, and the toothpaste between the discharge hole 35 and the finger 38a. Is introduced and charged. When an external force is applied to the cover 38 in this state, the cover 38 is compressed as shown in FIG. 8 and the volume of the pressure chamber 32 is reduced. At this time, the finger 38a presses the toothpaste filled between the discharge hole 35 and the finger 38a to discharge it to the outside, and finally, the finger 38a is in close contact with the discharge hole 35 and discharges the discharge hole 35. ) Will be closed.

Next, the operation and effects of one embodiment of the toothbrush having such a configuration will be described with reference to FIGS. 2 and 3. According to this, Figure 2 is a state before the use of the toothbrush, the toothpaste storage container 50 and the piston 60 filled with toothpaste inside the toothbrush 10 of the toothbrush 10 is sequentially inserted, the rear cap (open) 70) is combined.

When the toothbrush is to be used in this state, as shown in FIG. 3, the user moves the knob 62 of the piston 60 to the front while the user grips the handle 20 of the toothbrush. Then, the piston (60) formed integrally with the knob (62) presses the toothpaste storage container (50) while moving forward of the handle (20), and the toothpaste storage container (50) reduces the volume of the toothpaste passage ( Discharge to 20a). The toothpaste passing through the passage 20a is introduced into the pressure chamber 32 of the head 30 and simultaneously discharged to the outside through the discharge port 35. At this time, the toothpaste is to prevent the inflow of foreign substances from the outside by the sealing film 36 of the toothpaste backflow prevention means or the cover 38 capable of elastic deformation. Then, when the user releases the knob 62 at the predetermined position, the stopper 65 of the knob 62 is inserted into the stop groove 24a of the guideway 24 while being elastically deformed in the operating groove 64, As a result, the piston 60 is kept in a stopped state.

On the other hand, by precisely adjusting the moving distance of the knob 62, the user can supply the quantitative toothpaste necessary for cleaning the tooth to the cilia 40 of the head 30. That is, the scale 25 is formed at one side of the guide path 24 formed in the handle 20, and by accurately measuring the moving distance of the knob 62 on the basis of the scale 25, the head ( The amount of toothpaste supplied to the cilia 40 of 30) can be adjusted accurately every time.

Next, FIGS. 9 to 11 show another embodiment of the toothbrush according to the present invention. This is as follows. First, Figure 9 is an exploded perspective view showing another embodiment of the toothbrush according to the present invention, Figure 10 and Figure 11 is a longitudinal cross-sectional view showing the coupling state of Figure 9 and its operation. According to this, the toothbrush 100 of another embodiment includes a handle 110 having a large accommodation space 112, a head 120 integrally formed at one end of the handle 110, and one side surface of the head 120. It can be seen that it consists of a cilia 130 to be planted in the, toothpaste storage container 140 for storing the toothpaste and a piston 150 for pressing the toothpaste storage container 140, and in addition to the handle 110 It can be seen that the feed shaft 160 for moving the 150 and the knob 162 for rotating the feed shaft 160 are included and installed.

Looking at this in detail, the handle 20 of the toothbrush 100 is formed relatively long so that the user can conveniently hold by hand, there is a receiving space 112 is formed inside the rear. The accommodation space 112 is in communication with the head 120 by the passage (110a), one end of the passage (110a) the discharge port 125 is formed between the cilia 130 are planted in the head 120 .

And the inner surface of the receiving space 112 is formed with a guide groove 114 in a predetermined depth along the longitudinal direction, the scale 116 is formed on one end of the handle 110, that is, the outer peripheral surface of the open rear. This is to supply the quantitative toothpaste to the head 120 by accurately measuring the moving distance of the piston 150 by allowing the rotation speed and the rotation angle of the knob 162 to be recognized.

On the other hand, in the receiving space 112 of the handle 110, the toothpaste storage container 140 for storing the toothpaste, the feed shaft having a piston 150 and the knob 162 for pressing the toothpaste storage container 140 integrally. 160 is inserted one after the other.

Toothpaste storage container 140 is folded as the toothpaste is consumed as shown in Figure 9 is reduced in volume and is composed of a bellows capable of elastic deformation, in the center the insertion groove 142 is formed a predetermined depth in the longitudinal direction, one side The discharge port 144 for discharging the toothpaste is formed. The outlet 144 is configured to communicate with each other by being inserted into the passage (110a) to a predetermined depth when the toothpaste storage container 140 is inserted into the receiving space (112). On the other hand, the toothpaste storage container 140 may be formed in a single-use, it may be permanently used to receive toothpaste from the outside through the outlet 114.

In addition, the piston 150 pressurizes the toothpaste storage container 140 at the rear of the toothpaste storage container 140, and serves to discharge the toothpaste at a predetermined pressure by reducing its volume. One side of the piston 150 is formed with a guide protrusion 152 is inserted into the guide groove 114 of the receiving space 112 to slide. The guide protrusion 152 prevents the piston 150 from rotating in the accommodation space 112 and helps to naturally move left and right along the accommodation space 112. In addition, a guide hole 154 is formed in the center of the piston 150, and an internal thread is formed on the inner circumferential surface of the guide hole 154. The feed shaft 160, which will be described later, is screwed to the guide hole 152, and the piston 150 can move in the accommodation space 112 by the rotation of the feed shaft 160.

On the other hand, the feed shaft 160 to move the piston 150 to the left, right, a male thread is formed around the outer surface to be screwed with the guide hole 154 of the piston 150, the knob 162 on one side Is formed. The knob 162 serves as a handle to rotate the feed shaft 160 from the outside and also closes the receiving space 112 of the handle 110. The feed shaft 160 is fitted from the open rear of the handle 110 and screwed with the guide hole 154 of the piston 150, and is inserted into the insertion groove 142 of the toothpaste storage container 140 to accommodate the receiving space 112 Stretched along.

Therefore, when the knob 162 is rotated by such a configuration, the feed shaft 160 is also rotated, and the piston 150 is moved as the feed shaft 160 is rotated to move the toothpaste storage container 140 to a predetermined pressure. To pressurize.

On the other hand, the coupling structure of the handle 110 and the head 120 connected by the passage (110a) and the coupling structure of the head 120 and the discharge port 125 is the same as the embodiment of the toothbrush described above, so a description thereof is omitted. Let's do it.

Finally, with reference to Figures 10 and 11 will be described the operation of another embodiment of the toothbrush described above. According to this, Figure 10 is a state before the use of the toothbrush, the toothpaste storage container 140, the piston 150 and the feed shaft 160 is filled in the handle 110 of the toothbrush 100 is filled with toothpaste sequentially In the open position, the knob 162 integrated with the feed shaft 160 is rotatably coupled.

To use the toothbrush in this state, as shown in FIG. 11, the user rotates the knob 162 while holding the toothbrush 100. Then, the feed shaft 160 integrally formed with the knob 162 is rotated. As the feed shaft 160 is rotated, the piston 150 is also moved to press the toothpaste storage container 140 to a predetermined pressure. Therefore, the toothpaste storage container 140 discharges the toothpaste into the passage 110a while the volume thereof is reduced. And the toothpaste passing through the passage (110a) is introduced into the head 120 is discharged to the outside through the discharge port 35, 37 at the same time at a predetermined pressure. At this time, the toothpaste is to prevent backflow by the toothpaste backflow prevention means as described above. Then, when the user releases the knob 162 at a predetermined position, the knob 162 stops rotating, and at the same time, the feed shaft 160 also stops rotating, thereby stopping the pressing action of the piston 150.

On the other hand, by accurately adjusting the rotational speed and the rotation angle of the knob 162, the user can supply the amount of toothpaste necessary for cleaning teeth to the cilia 130 of the head 120 appropriately. That is, a scale 116 is formed around the handle 110, and the cilia 130 of the head 120 are accurately measured by accurately measuring the rotation speed and the rotation angle of the knob 162 based on the scale 116. ), The amount of toothpaste supplied can be adjusted accurately every time.

Therefore, by this configuration, the user does not have to carry a separate toothpaste container as well as can easily and conveniently supply quantitative toothpaste to the cilia, so that the tooth cleaning can be made as simple as possible.

On the other hand, the above embodiments are merely to describe the preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and the present invention can be appropriately changed within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, the toothbrush according to the present invention can easily supply toothpaste to the cilia of the toothbrush without having and carrying a separate toothpaste container, thereby increasing convenience.

In addition, by supplying the toothbrush in a quantitative amount as needed, it has the effect of reducing the economic loss.

In addition, by simplifying the configuration of the toothbrush having a toothpaste supply function as compared to the conventional, there is an effect that can improve productivity, such as reducing the manufacturing cost and shorten the assembly time.

In addition, while only the toothpaste can be properly supplied, it is possible to prevent foreign substances from entering the pressure chamber through the discharge port, so that the stored toothpaste has an effect of preventing contamination and curing in advance.

Claims (8)

A handle 20 having a rear receiving space 22, the side of which is formed with a guide path 24 that is opened in the longitudinal direction from the rear of the open portion; Toothpaste storage container (50) made of a bellows is accommodated in the receiving space 22 of the handle 20 to supply toothpaste, folded as the toothpaste is consumed, the volume of which is reduced; By pressing the toothpaste storage container 50 from the rear of the toothpaste storage container 50, a piston (62) protruding outward through the guideway 24 of the handle 20 on one side ( 60); A cap 70 for closing the open rear of the handle 20; A head 30 formed integrally with the handle 20 and having a discharge port 35 communicating with the receiving space 22 of the handle 20 to discharge toothpaste on one side thereof; A plurality of cilia (40) which are planted around the outlet (35) of the head (30); Toothbrush made of foreign matter inflow prevention means for preventing foreign matter from entering the head 30 through the discharge port (35). The toothbrush according to claim 1, wherein the discharge hole (35) of the head (30) is formed long along the longitudinal direction of the head. According to claim 1 or 2, wherein the foreign matter inflow prevention means forms a pressure chamber 32 in communication with the discharge port 35 in the head 30, the pressure chamber 32 in the discharge port While being in close contact with 35, a sealing film 36 having a cutout 36a is provided along the discharge port 35, and the cutout 36a is configured such that its end portion always abuts toward the discharge port 35. Toothbrush characterized in that it is formed thinner toward the end. 2. The toothbrush of claim 1, wherein the outlets of the heads are a plurality of holes formed between the cilia. According to claim 1 or claim 4, The foreign matter inflow prevention means is installed so that the pressure chamber 32 is formed on one side of the head 30, the cover 38 capable of elastic deformation; And a plurality of fingers (38a) protruding from one side of the cover (38) to selectively open or close the outlet (35) by deformation of the cover (38). The method of claim 1, wherein the toothbrush further comprises a piston stop means for stopping the piston 60 in a predetermined position, the piston stop means The stopper 24a is formed so as to be connected to one side of the guide path 24 and the operating groove 64 is formed on one side of the knob 62, it is installed so as to be sunk, the guideway ( Toothbrush characterized in that the stopper 65 is selectively inserted into the stop groove (24a) of the 24. The toothbrush of claim 6, wherein a scale (25) is formed at one side of the guide path (24) to measure a moving distance of the knob (62). A handle 110 having a rear receiving space 112; Toothpaste storage container 140 of the bellows is accommodated in the receiving space 112 of the handle 110 to supply the toothpaste, folded as the toothpaste is consumed to reduce its volume; A piston 150 for pressing the toothpaste storage container 140 at the rear of the toothpaste storage container 140; A feed shaft 160 for moving the piston 150 by screwing and rotating to penetrate the piston 150; A knob 162 integrally formed at one end of the transfer shaft 160 and rotatably installed at an open rear of the handle 110 to rotate the transfer shaft 160; A head 120 integrally formed at one end of the handle 110 and having a discharge port 125 communicating with the receiving space 112 of the handle 110 to discharge the toothpaste; A plurality of cilia (130) which are planted around the outlet (125) of the head; Toothbrush made of foreign matter inflow prevention means for preventing foreign matter from entering the interior of the head 120 through the discharge port (125).