JPS6290107A - Toothbrush - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a toothbrush for removing food debris and plaque that adheres around the teeth in the cranial folds, especially in the recessed areas between the teeth and between the teeth and the gums. To provide a toothbrush that can intensively brush key points where plaque and debris tend to accumulate, and can be used extremely easily on a daily basis without using polishing chemicals or cleaning water.

2. Description of the Related Art In the past, many general toothbrushes have been proposed in which, when the brush becomes damaged, the brush part can be removed from the handle along with the implant base and replaced. In addition, in order to brush between the teeth and other areas where plaque tends to accumulate, several tufts of hair are implanted in a narrow area at the tip of the handle.
No. 52937, etc., and some are commercially available.

Japan Kokujitsukai No. 58-166733, etc., discloses a toothbrush in which a brush made of multiple twisted wires is attached to the handle in a replaceable manner. Some are sold commercially as brushes.

Problems to be Solved by the Invention In the toothbrush shown in the above-mentioned Japanese Utility Model Application Publication No. 59-52937, after use, food particles, plaque, etc. adhere to between and around the heavy lines of the brush portion. It is desirable to wash the brush portion with water or the like to remove impurities.

This is quite annoying in everyday life,
This is a factor that makes people avoid taking care of their teeth, which is their goal. Furthermore, if the brush is attached to the handle, it is difficult to handle and unsanitary. Even if a cover is used, the size of the cover is somewhat inconvenient to carry or store in a convenient place, and this becomes a factor that impedes easy use. The brush can be attached and detached from the handle along with the planting stand, and it can also be stored separately for carrying or storage, but this is cumbersome.

Furthermore, covering or storing the toothbrush before it has sufficiently dried after cleaning is not as hygienic as conventional toothbrushes, and it feels even more unclean to handle the wet brush with your fingers before and after use.

Also, when using a small brush like this, it is better to use a thicker bundle of hair with a large number of thin lines as possible, as this will give the brush a stronger body and a better focus on the tips of the brush, resulting in a more precise polishing effect. Although this method has advantages, it also has the disadvantage that in thick hair bundles with a large number of heavy lines, impurities that have entered the inside of the hair bundle cannot be removed sufficiently during washing, resulting in a tendency to become unclean. Because of this, today the hair bundles are generally about 1.5 millimeters thick and are implanted in the base with a certain gap between them.

Furthermore, since the brushing force of such a toothbrush is concentrated in a narrow brush area, it is desirable that the toothbrush be thin and soft so as not to damage the gums. The brushing brush section is extremely narrow compared to that of a regular toothbrush, so it is subjected to harsh usage conditions, which makes the damage to the heavy lines even more severe. However, considerable durability is required.

From this point of view, it is inevitable to choose thick and hard heavy lines. These thick and hard lines tend to damage the gums and cause pain to the user. In addition, the tips of the bristles can penetrate sufficiently deeply into the minute gaps between teeth, which inhibits the effect of scrubbing plaque and the like in such areas. Due to these conflicting requirements, conventional toothbrushes have the problem that it is difficult to provide optimal heavy lines and brush shapes.

The toothbrush shown in the above-mentioned Japanese Utility Model Application Publication No. 58-166733 removes deposits from the interdental area by passing the brush part into the gap between the teeth and moving the brush part in the axial direction. It is effective as a cleaning tool for certain interdental areas. This type of toothbrush is a long cylindrical brush that scrubs the other side with the side surface, and is generally extremely weak and bendable, so it cannot be used in narrow spaces between teeth or in crevices where the brush cannot pass. Like regular toothbrushes, it is insufficient for brushing surfaces. Further, such a removable molded brush that can be securely attached to the handle is quite expensive and cannot be replaced frequently.

Conventional toothbrushes of this type require replacing the brush every time they are used and are not durable, so no consideration has been given to the structure from this point of view.

As described above, conventional so-called interdental toothbrushes have many problems.

Therefore, the purpose of the present invention is to remove plaque and food debris from areas that cannot be removed with a normal toothbrush, such as the back side of the teeth and around the teeth, and to effectively remove plaque and food debris from areas that cannot be removed with a normal toothbrush. Our goal is to provide toothbrushes that are comfortable to use.

Another object of the present invention is to provide a toothbrush that does not require cleaning of the brush part 1/J after use, is convenient to store and carry, and can be used easily in a short amount of time.

Still another object of the present invention is to provide an inexpensive toothbrush that maintains the cleanliness of the brush portion and the convenience of its tip.

Means for Solving the Problems The present invention provides a bundle of bristles that is separate from the handle and has a width of the brush surface that is less than the thickness of a tooth, and a thick base of the bristles at one end. This toothbrush has a round handle which is adapted to the above-mentioned conditions and has a holding part to which the bristle bundle can be attached and detached, and is attached to the bristle holding part when brushing teeth and removed after brushing the teeth.

Function: When using the toothbrush, a tuft of hair stored in a storage case or the like is taken out and attached to the holding part of the handle by a simple mounting operation, and after use, it is removed from the holding part by a simple removal operation. During use, the bristles often penetrate the narrow gaps between teeth H and T+ and the small depressions between the root of the teeth and the gums, and the fresh and sharp tips of the bristles effectively scrape the surface of these areas to remove deposits. remove.

Embodiment In the toothbrush 30 shown in FIGS. 1 and 2, a generally square plastic handle 31 is provided with a vertically long split groove 38 extending vertically on its tip side. It is divided into two leg parts 39 and 40 on the left and right. Both legs 3
9 and 40 are usually made so that their tips are somewhat open, allowing them to bend toward each other.

Holding parts 32 that are recessed in a semi-cylindrical shape are formed on the inner sides of the tip ends of the legs 39 and 40 so as to face each other. Slanted surfaces 41 and 42 are formed on the rear side of both legs and extend symmetrically toward the front at a gentle inclination angle. The rear portions of the inclined surfaces 41 and 42 form a sliding guide portion 43 extending parallel to the rear. An operating member 44 is fitted into the sliding guide portion 43 so as to be slidable back and forth. Operation member 44
is made of a thin metal tube, and its front side inner wall conforms to the sloped surfaces 41 and 42 and has an operating surface 34 that gradually expands.
It has become 35 years old. A tongue groove 45 provided on the upper surface of the handle and a stop tongue 46 at the rear end of the operating member bent into the tongue groove 45 form a stopper when the operating member is retracted. Therefore, i
When the operating member 44 is moved forward, the legs 39 and 40 are closed, and the holding portion 32 forms a cylindrical hole large enough to firmly hold the hair bundle 33. The figure shows the state in which this hair bundle 33 is held. After use, the hair bundle 33 is removed by retracting the operating member 44 and opening the holding section.

When installing a new hair bundle, place the base of the hair bundle against the holding portion 32 and move the operating member 44 forward.

good. Here, the operating member is maintained in the forward state by the frictional force generated on the operating surface with the mating member.

The thickness of the hair bundle 33 is 3 to 4 mm, and the length from the top surface of the handle to the tip is 5 to 6 mm. As for the material of the hair legs, chemical fibers, animal hair, etc. are used as in the conventionally known materials. The bristles used are thinner than those of conventional toothbrushes. The tip of the bristle bundle, ie, the brush m136, has a mountain shape with a protruding central portion.

In the present invention, active efforts are made to provide a good polishing effect on the hair strands and to provide the product at a sufficiently low cost.

IS Figures 3 to 5 show examples of the bristle bundle of the toothbrush of the present invention.
In the case shown in FIG. 13, the base 60 of the hair bundle 33 is pushed into a bush 37 made of plastic such as nylon. In this case, the outer periphery of the push-piece 37 is sized to fit the holding part of the handle. A flange 61 is provided on the outer periphery of the upper part of the pusher 37. The flange 61 not only increases the force of attaching the JD1 portion of the hair bundle, but also serves as a stopper when inserted into the holding section. In the case shown in FIG. 4, the base 60 of the hair bundle is hardened with an adhesive or the like. It can be easily manufactured by immersing a certain length of the cut end of the hair bundle in an adhesive bath solution. In the one shown in FIG. 5, the base end 62 of the hair bundle is bathed, and the hair legs are made of chemical fiber wire such as nylon. It can be easily manufactured by pressing the base end portion 62 against a heated plate surface. It is desirable that the brush surface has a width less than the width of a normal adult tooth, that is, 5 to 6 wear or less. Optimally, a diameter of 2 to 4 mm is recommended, and a length of 5 to 6 mm from the top of the hair bundle holding section. It goes without saying that for infants, a smaller one is recommended depending on the thickness of the infant's teeth. The shape of the brush surface is not particularly limited, but generally a pointed shape is desirable.

Furthermore, in the present invention, a single bundle of hair includes, for example, a bush as shown in FIG. I'm here.

Other embodiments of σ are shown in FIGS. 6-8.

The toothbrush 30 shown here has a cylindrical holding part 32 formed on the upper surface of the tip of the handle 31 and having a size that fits a tuft of hair. The rear side of the holding portion 32 is a shaft hole 43 that penetrates to the rear end inside the handle.

A push rod 44 is slidably inserted into the shaft hole 43.

The thickness of a certain length part at the rear of the handle 31 is thinner,
A female thread having a diameter larger than the thickness of the core is cut in this thinned portion, and a worm 55 having a male thread on the outer periphery is fitted into the female thread. The worm 55 has an internal shaft hole, and is fitted into the narrowed portion 54 at the rear of the push rod so as to be freely rotatable. The upper and lower parts of the worm's outer circumference are the rear part of the handle (h
It is curved on the top and bottom. The tip 53 of the push rod is the holding part 32
It is formed into a cylindrical surface following the circumferential wall of No. 4. Therefore,
The push rod 44 can be moved back and forth by turning the exposed portion of the worm 55 with a finger. The push rod can be kept pressed forward by the frictional force of the threaded portion. As a means for keeping the push rod pressed forward, an elastic body such as a spring, such as a toothbrush 30' to be described later, may be used. At this time, push and pull the exposed portion at the rear of the push rod with your fingers to manipulate the push rod back and forth.

In this example, a cap 56 with a clip 57 is placed over the tip of the handle, as shown by the imaginary line in the figure. Remove hair bundles after use.

It can be stored or carried with the cap 56 on.

Toothbrush 30rI′i thin and long handle 3 shown in Figures 9 and 10
A holding part 325 consisting of a hole sized to fit the base of the hair bundle is provided at the tip of the hair 15.a The holding part 325 has a gently tapered hole with a larger opening on the upper surface side.

Therefore, the hair bundle 335 is attached to the holding part 323 by pushing it from above, and is removed by poking the base end of the hair bundle from the back side of the hole.

Here, the angle at which the hair bundle is held relative to the handle (X is the chelicerae and is held slightly tilted backwards).

The slot 63 at the rear of the holding portion provides the hole with appropriate elasticity.

The vertical direction of the groove 63 is inclined with respect to the axis of the hole.

11 to 13 show an embodiment of the present invention. The handle of the toothbrush 30 consists of a barrel 316 having an operation surface and a clamp body 48. A shaft hole 43 is bored inside the body 316 and extends from the h nI+ end to the rear end, and the shaft hole 436
A shaft portion 446 of the sandwich body is fitted into the frame. The scissor body has leg parts 396 and 40 which are divided by a split #38 on the distal end side and are bent to open and close. A holding part 32 is formed in a semi-cylindrical shape facing the holding part 326.The dividing groove 38 is inclined with respect to the cylindrical axis of the holding part 326, and is formed in grooves which are inclined to different sides at the front and back of the holding part. The free side portions of the legs 396 and 406 form inclined surfaces 416 and 426 that symmetrically widen toward the front at a gentle inclination angle.

Also on the body side, there is an operation surface 3 in which the front part of the shaft hole 436 expands in an inclined manner.
It's now 4 and 35. Rear part QjI(1)I of shaft portion 44
A spring cover 65 protrudes a certain length from the rear end of the moving part 445, and is fixed to the rear end of the moving part 445 by a stopper pin 66. A tension spring 55 is inserted into the shaft between the spring cover 65 and the rear end of the body 31. Therefore, the sandwich body 48
is maintained in a state where it is constantly pulled rearward by the tension spring 55, and its legs 396 and 406 are connected to the operation surfaces 346 and 35.
Closed by 6.

The holding portion 326 firmly holds the hair bundle.

The dividing lines of the front and rear dividing grooves of the holding part are inclined with respect to the axial force direction of the hair bundle, and when the hair bundle is pinched, the heavy lines V and -￥A enter the gap between the dividing grooves and the hair bundle is There is no possibility that the holding force of the wire will be hindered or that the heavy wire will fall into the gap and spread during use. The legs are opened and closed by pushing away the rear part of the spring cover 65 and moving the clamp body back and forth. As a means for moving the clamp body back and forth and a means for maintaining it in a rearward tension state, a worm and female thread could be used as shown in the embodiment of It-, '456-8.

In the present invention, the thickness of the C handle σ, the hair bundle σ relative to the handle, the holding angle α, the degree of bending of the handle, etc. can be freely selected within a wide range.

FIG. 14 shows a state in which a large number of hair bundles are stored in the storage case 70. The hair bundles 33 are stored vertically in a storage case 70. The storage case 70 is made of a flexible plastic tube, one end of which is closed with a crimp end 1, and the other end is open and serves as a take-out lower 2.

The hair bundle 33 is stored with its base portion taken out and placed on the lower 2 side. When taking out the hair bundle 33, press the stopper 7 at the outlet.
3 and shake the case so that the outlet side hits an object, the base of the hair bundle can be taken out and exposed on the end of the lower part 2. If you press the hair bundle from the top of the case with your fingers and place the base against the holding part of the handle, you can attach it to the handle without touching the hair bundle with your fingertips.
can be handled. If a plurality of such storage cases 70 are pasted in parallel on a mount, it is convenient for storage and portability. In this way, the hair strands are hygienically protected and supplied in a conveniently portable form.

Effects According to the present invention, hair bundles can be provided at extremely low cost, and the hair bundles can be removed and thrown away after use without any economic burden.

As a result, there is no need to clean the brush part, it is convenient to carry around, and the constraints of time and location are greatly relieved, allowing for more frequent and thorough dental care. Also, since one hair bundle does not require durability, it is possible to use the optimal thin and flexible hair.

The bristles do not damage the gums, and the bristles can easily penetrate into the narrow recesses around the teeth to scrape the surface m1, making it possible to remove deposits effectively and comfortably. Furthermore, the hair strands used are fresher, allowing for more hygienic dental care.

[Brief explanation of drawings]

Figure 1 is a front view of a toothbrush σ) showing an embodiment of the present invention;
3 is a front view showing an embodiment of the bristle bundle according to the present invention, and FIG. 4 is a partial cross-sectional view of the toothbrush shown in FIG. σ,・A front view showing an embodiment, FIG. 5 is a front view showing another embodiment of the bristle bundle, and FIG. 6 is a plan view of a toothbrush showing another embodiment of the present invention. Figure i''1 is a 7-7 sectional view in Figure 6, Figure 8 is a 8-8 sectional view in Figure 7, and Figure 9 is a front view of a toothbrush showing another embodiment. FIG. 10 is a plan view of the toothbrush shown in FIG. 9; FIG. 11 is a plan view of a toothbrush showing still another embodiment, with a portion shown in cross section; FIG. Figure 11 is a 12-12 sectional view, Figure 13 is a right side view of the toothbrush shown in Figure 7811, and Figure 14 is a front view showing an embodiment of the hair bundle storage case of the present invention. It is a diagram showing a part in cross section. Explanation of main symbols 3T, 3+', 315 Two handles 31: Body 32. 32. 325. 326: Holding part 33. 33...33: Hair bundle 34.35.34', 356: Hyaksakumian 2
B 36.36.36.36: Brush surface 37: Push 38.38: II groove 39.4
0.39.40: Leg portion 41.42.4142: Inclined surface 44: Operation member 48: Sandwich body 53: Tip 55:
Worm 55: Pull spring 60. 60: Base 62: Base end 65: Spring lid 70: Storage case 72: Outlet 73: Plug

Claims (4)

[Claims] (1) A bundle of hair that is separate from the handle and whose width on the brush surface is less than the thickness of the tooth, and one end that fits the thickness of the base of the hair bundle, and the hair bundle can be attached and detached. A toothbrush comprising a handle having a flexible holding part, the bristles are attached to the holding part when brushing teeth, and are removed after brushing teeth. (2) A pinch side crosspiece whose tip is divided by a groove, has a sloped surface on the outside, has a holding part on the inside, and has legs that open and close, and an operation that fits the slope on the inside. Claim 1, characterized in that the operating member has a surface and slides back and forth on the outside of the leg, and a handle includes means for maintaining the operating member in the closed state of the leg. The toothbrush described in section 1). (3) The dividing groove around the holding part is formed in an inclined shape with respect to the axis of the hair bundle.
The toothbrush described in section 2). (4) The toothbrush according to claim (1), wherein the base end of the bristle bundle is heat-welded.