KR20060026646A - Toothbrush and its manufacturing method - Google Patents

Abstract

In the present invention, the bristle bristles 11 to which the bristles 60 are to be planted and the soft elastic wool molding spheres 13 through which the soft elastic hairs 70 are injection molded are formed to connect the soft elastic wool molding spheres 13 to each other. Toothbrush head plate 1 having a channel 14 extending to the side surface 17 formed on the fusion surface 15 and a toothbrush head portion 21 on which the fusion surface 15 of the toothbrush head plate 1 is fused are formed. The plastic molding step of molding the integrally molded handle 2 and the natural elastic, synthetic rubber, or silicone fluid are supplied through the channel 14 to the flexible elastic wool molding sphere 13. At the same time, the side 17 has a soft body molding step of injection molding the soft pad 71, a bristles step to brush the bristles on the bristle bristle 11 of the toothbrush head plate 1, and the soft elastic hair Toothbrush head plate 1, in which 70 and soft pads 71 are molded and bristles 60 are planted, is fused to toothbrush head 21 of toothbrush handle 2. To the fusion step, and the brushing step of cutting the bristles 60 implanted in the toothbrush bristle 11 of the toothbrush head plate (1) fused to the toothbrush head 21 in the desired shape and round the end of the grinding step It provides a toothbrush manufacturing method comprising and a toothbrush prepared accordingly.

As described above, the toothbrush prepared according to the toothbrush manufacturing method according to the present invention can form a bristle without increasing the size of the toothbrush head even if forming a soft elastic hair that functions as a gum massage, there is no deterioration of tooth cleaning power, According to the soft elastic hair and the soft pad molding, the necessary channels are located on the invisible inner side of the toothbrush head, thereby providing a neat finish.

Toothbrush, head, soft elastic hair, soft pad, channel, injection molding, welding

Description

Toothbrush and manufacturing method thereof

Figure 1a is a perspective view of a toothbrush head plate according to an embodiment of the present invention

Figure 1b is a perspective view showing the formation of a flexible elastic body and gum protection pad on the toothbrush head plate according to an embodiment of the present invention

1C is a perspective view showing that the bristles are implanted in the toothbrush head plate of 1B

Figure 2 is a perspective view of a toothbrush handle in accordance with an embodiment of the present invention

3 is a view showing the welding of the toothbrush head plate of Figure 1c to the head of the toothbrush handle;

Figure 4 is a side view showing a toothbrush in accordance with an embodiment of the present invention

※ Explanation of code about main part of drawing ※

1: toothbrush head plate 2: toothbrush handle

11: toothbrush bristles 13: soft elastic mold

14: channel 15: fusion surface

15 ': Fusion side 21: Toothbrush head

22: head plate welding side 22 ': head plate welding side

33: fusion line 60: brush head

70: soft elastic hair 71: soft pad

The present invention relates to a toothbrush and a method for manufacturing the same, and more particularly to a toothbrush formed with a soft elastic body that functions as a gum massage function and a method for manufacturing the same.

A general toothbrush comprises a handle portion, a neck portion extending from the handle portion, and a head portion connected to the neck portion and into which bristles of a synthetic resin material are inserted and mounted. Such a simple toothbrush has excellent cleaning power on the hard tooth surface, but when massaging the gums surrounding the teeth, there is a problem of hardening the gums due to the nature of the bristles.

In order to solve such a problem, in recent years, a toothbrush which can safely massage the gum by injection molding a soft elastic material such as rubber on the toothbrush head of the toothbrush has been proposed and used.

However, these toothbrushes are formed by providing a gate for injection molding on the outside of the head portion to form a soft elastic body and by injecting a melt of the soft elastic body from the outside (the melt forms a soft elastic body surrounding the toothbrush head). Compared to the toothbrush head is larger than this, there is a problem that the tooth cleaning effect is reduced.

Therefore, the present invention has been created to solve the above problems, the object of the present invention is not only soft elastic body is formed to massage the gums safely, the size of the head is also soft elastic body is not larger than the conventional toothbrushes To provide a toothbrush formed and a method of manufacturing the same.

The purpose of the toothbrush is a toothbrush, the toothbrush is a toothbrush head plate and a toothbrush head having a toothbrush head portion fused to the toothbrush head plate is fused to the bristle insertion hole, the toothbrush head plate is a soft elastomeric molding is formed through this soft It can be achieved by injection molding the elastic hair.

In addition, the purpose of the toothbrush manufacturing method is the toothbrush bristles to be planted with the bristles and soft elastic wool molding spheres to be molded in the soft elastic hair penetrates through the channel formed in the fusion surface connected to the soft elastic wool molding spheres and extending to the side A plastic molding step of forming a toothbrush head plate, a handle integrally molded with the toothbrush head portion to be fused to the toothbrush head plate, and a natural rubber, synthetic rubber, or silicone fluid through the channel to supply the soft elastic A soft body molding step of injection molding a soft elastic hair to the mold sphere, and at the same time a soft pad molding portion, and a bristling step of implanting the bristles to the bristle of the toothbrush head plate, and the soft elastic hair and the soft pad is molded A fusion step of fusing the toothbrush head plate having bristled bristles to the toothbrush head portion of the toothbrush handle, and the toothbrush head It can be achieved by including a brushing step of cutting the bristles planted in the bristle bristle of the toothbrush head plate fused to the portion to the desired shape, and rounding the end portion round.

In the toothbrush of the present invention for achieving the above object is a toothbrush in which the bristles are combined with a toothbrush head plate and a toothbrush handle having a toothbrush head portion fused to the toothbrush head plate, the toothbrush head plate is a soft elastic molding machine Is formed is characterized in that the soft elastic hair injection molded through this.

Here, the toothbrush pad forming portion of the toothbrush head plate is characterized in that the injection molding of the soft pad.

And, the soft elastomeric molding spheres are characterized in that connected by a concave channel.

In addition, the channel is characterized in that connected to the soft pad forming portion formed on the side of the toothbrush head plate.

In addition, the toothbrush handle is characterized in that the double injection molding of natural rubber or synthetic rubber on the outer surface.

In addition, the soft elastic hair and the soft pad are made of styrene-ethylene-butadiene-styrene rubber (SEBS TPE) using natural rubber and a thermoplastic elastomer (Thermoplastic Elastomer), ethylene-propylene-diene rubber (EPDM; It is characterized in that the injection molding of any one of synthetic rubber and silicon (Silicon), such as ethylene propylene diene monomer rubber.

In addition, the fusion of the toothbrush head portion and the toothbrush head plate of the handle is characterized in that the ultrasonic welding.

In addition, the toothbrush manufacturing method of the present invention for achieving the above object is a bristle bristle to be planted with the bristles and soft elastic hair injection molding soft elastic hair injection molding is formed and connected to each other and extended to the elastic elastomeric molding spheres A plastic molding step of forming a toothbrush head plate having a channel formed on the fusion surface and a handle integrally formed with a toothbrush head portion on which the fusion surface of the toothbrush head plate is fused; and a natural rubber, a synthetic rubber, or a silicone fluid through the channel. A soft body molding step of supplying the soft elastic hair to the soft elastic hair forming tool and injection molding of the soft pad to the soft pad forming part, and a bristling step of planting the bristles on the bristle bristles of the toothbrush head plate, and the soft elastic hair. The toothbrush head plate, in which the hair and soft pad are molded and the bristles are implanted, is fused to the toothbrush head of the toothbrush handle. It is configured to include a mounting step and, cutting out the step of cutting the bristles implanted in the bristle implanted sphere of the toothbrush head plates welded to the brush head into a desired shape, and polishing the rounded end.

Here, the toothbrush handle is characterized in that the plastic injection molding after the double injection molding of natural rubber or synthetic rubber on the outer surface.

In addition, the fluid forming the soft elastic hair and the soft pad may be made of styrene-ethylene-butadiene-styrene rubber (SEBS TPE; Styrene Ethylene Butadiene Styrene based Thermoplastic Elastomer) using natural rubber and thermoplastic elastomer (Thermoplastic Elastomer), ethylene-propylene- It is characterized in that any one of synthetic rubber and silicon (Silicon) such as diene rubber (EPDM; Ethylene Propylene Diene Monomer Rubber).

And, the fusion of the toothbrush head portion and the toothbrush head plate of the handle is characterized in that made of ultrasonic welding.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. While many specific details are set forth in order to provide a more general understanding of the invention, such as the following description and the annexed drawings, these specific details are illustrated for the purpose of illustrating the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Figure 1a is a perspective view showing a toothbrush head plate according to an embodiment of the present invention, the toothbrush head plate 1 according to an embodiment of the present invention is injection molded plastic such as polypropylene (polypropylene) resin or polyethylene (polyethylene) resin A plurality of through holes penetrated from the fusion surface 15 are formed in a plate shape having a thickness of 2 to 2.5 mm. The through hole is formed in a predetermined pattern effective for brushing teeth. In the present embodiment, the through hole is composed of a soft bristle molding tool 13 into which a bristle bristle 11 to be inserted with a bristle 60 which is a general bristle bristle 11 and a soft elastic hair 70 is injection molded.

The flexible elastomeric molding tool 13 has six through holes arranged in the middle of the left and right ends of the toothbrush head plate 1. Are connected to each other. The channel 14 is concave on the fusion surface 15 to become a passage for the fluid to form the soft elastic hair 70, and the channel 14 is also connected to the soft pad forming unit 17 to form a soft pad. The part 17 serves as a passage for the fluid to form the soft pad 71.

The bristle 60 may be a bristle of nylon (Nylon) or polybutylene terephthalate (PBT) synthetic resin, which is generally used, and forms the soft elastic hair 70 and the soft pad 71. The fluid may be made of natural rubber, styrene-ethylene-butadiene-styrene rubber (SEBS TPE; Styrene Ethylene Butadiene Styrene based Thermoplastic Elastomer) using thermoplastic elastomer, and ethylene-propylene-diene monomer (EPDM). If it is hardened like synthetic rubber, silicone, etc., it can be used if it is a soft thing which has a predetermined elastic force.

FIG. 1B is a perspective view showing the formation of the soft elastic hair 70 and the soft pad 71 on the toothbrush head plate 1 according to the embodiment of the present invention, and the fusion surface of the toothbrush head plate 1 as shown in FIG. 1A. When the fluid is supplied to the channel 14 formed in the channel 15 through a gate (not shown) connected to a hot runner (not shown), the fluid flows back into the soft elastomeric molding tool 13 through the channel 14. When supplied along to form the shape of the soft elastic hair 70 and cooled to separate from the mold to form a soft elastic hair 70 as shown, some of the fluid is formed in the channel (outside the toothbrush head plate 1) It is supplied according to the shape of the mold through the soft pad forming portion 17 of the toothbrush head plate 1 through 14 to form a soft pad (71).

1C is a perspective view showing that the bristles 60 are implanted in the toothbrush head plate 1 of FIG. 1B, where the bristle 6 is planted in the bristle bristle 11 and the bristle 6 is the same as the anchor. It is in the state fitted to the bristles 11 without fixing.

Figure 2 shows a toothbrush handle according to an embodiment of the present invention, the handle (2) may have the same or similar shape as the handle of a general toothbrush, the head plate fusion portion to which the toothbrush head plate 1 is fused to the head side 21 is formed with a thickness of about 1 to 2 mm so that the head plate fusion surface 22, which is the upper surface thereof, fits snugly against the fusion surface 15 of the toothbrush head plate 1 accordingly. The handle 2 is injection-molded to cover a part or the whole by using a plastic material such as PP (Polypropylene) or PE (Polyethylene) alone, or using a soft elastic material such as natural rubber or synthetic rubber as described above. It can also be molded into.

3 is a view showing fusion of the toothbrush head plate 1 to the head portion 21 of the handle 2, Figure 4 is a side view showing a toothbrush 1 according to an embodiment of the present invention, In order to complete the toothbrush 1 according to the embodiment, the process of fusing the toothbrush head plate 1 to the toothbrush head portion 21 formed on the head side of the handle 2 is necessary. The fusion surface 15 and the fusion side surface 15 'of the toothbrush head plate 1 may be bonded to the head plate fusion surface 22 and the head plate fusion side surface 22' of the toothbrush head portion 21. At this time, the non-fixed bristle 6 will also be adhered because the end is melted. It is preferable to use an adhesion method using ultrasonic waves.

Now look at the manufacturing process of the toothbrush formed soft elastic hair 70 and gum protection soft pad 71 for gum massage according to an embodiment of the present invention.

The manufacturing process of the toothbrush according to the present invention is a first step, which starts with a plastic molding step of first plastic injection molding the toothbrush head plate 1 and the toothbrush handle 2 separately. The plastic molding step is the same as the conventional plastic molding production, the result is the shape as shown in Figure 1a and 2 and the shape structure is as described in detail above. If necessary, the toothbrush handle 2 is preferably double injection of natural rubber or synthetic rubber to be easy to grip and to prevent slipping. Since this is also a general method, detailed description thereof will be omitted.

The second step is a soft body molding step of forming a soft elastic hair and a soft pad on the toothbrush head plate 1, first of which the molded toothbrush head plate 1 is put in a mold and the fluid is fused to the toothbrush head plate 1 ( 15, the elastic elastic hair 70 by supplying and cooling a fluid along the channel 14 formed therein and connected to the soft elastic hair forming tool 13 and the soft pad forming portion 17 connected thereto. And a soft pad (71).

The third step is a hair transplant step in which the bristles 60 are implanted in the bristle hatch 11 of the toothbrush head plate 1, and the bristles 60 are planted using a conventionally used well-equipped funnel. In this step, the bristles 60 are not completely fixed to the toothbrush head plate 1 but are fitted.

The fourth step is a fusion step of fusion welding the toothbrush head plate 1, in which the soft elastic hair 70 and the soft pad 71 are molded and the bristles 60 are planted, to the toothbrush head portion 21 of the toothbrush handle 2. By using an ultrasonic welding machine, the fusion surface 15 and the fusion side surface 15 'of the toothbrush head plate 1 and the head plate fusion surface 22 and the head plate fusion side surface 22' of the toothbrush head portion 21 are used. It is to firmly combine. Of course, it is also possible to fuse the toothbrush head plate (1) to the toothbrush head portion 21 in another way, but to achieve a smooth and solid coupling, the ultrasonic welding method is preferred.

Finally, in the process of fusing the toothbrush head plate 1 to the toothbrush head 21, the tip of the bristle 6 is also melted and adhered to be firmly fixed. After that, the toothbrush 6 is cut evenly, and the toothbrush is finished through a finishing step of polishing and finishing the part in contact with the tooth.

As described above, the toothbrush manufacturing method according to the present invention and the toothbrush manufactured according to the present invention can be densely planted bristles without increasing the size of the toothbrush head even if forming a soft elastic hair that functions as a gum massage, there is no deterioration of tooth cleaning power According to the soft elastic hair and the soft pad molding, the necessary channels are located on the invisible inner side of the toothbrush head, thereby providing a neat finish.

Claims (11)

In the toothbrush 60, the toothbrush 60 combines a toothbrush head plate 1 implanted in the bristle insertion hole 11 and a toothbrush handle 2 having a toothbrush head portion 21 to which the toothbrush head plate 1 is fused. The toothbrush head plate (1) is characterized in that the soft elastic wool molding sphere 13 is formed through which the soft elastic hair 70 is injection molded. The toothbrush of claim 1, wherein a soft pad (71) is injection molded in the toothbrush pad forming portion (17) of the toothbrush head plate (1). 2. The toothbrush in accordance with claim 1, wherein the soft elastomeric sphere (13) is connected by a concave channel (14). 4. The toothbrush of claim 3 wherein said channel (14) is connected by a soft pad forming portion (17) formed on the side of said toothbrush head plate (1). The toothbrush of claim 1, wherein the toothbrush handle (2) is formed by double injection molding a natural rubber or a synthetic rubber on an outer surface thereof. According to claim 1 or 2, wherein the soft elastic wool 70 and the soft pad 71 is made of styrene-ethylene-butadiene-styrene rubber (SEBS TPE; Styrene Ethylene Butadiene) using a natural rubber, a thermoplastic elastomer (Thermoplastic Elastomer) Toothbrush characterized in that the injection molding of any one of synthetic rubber and silicone (Styrene based Thermoplastic Elastomer), ethylene-propylene-diene rubber (EPDM). The toothbrush according to claim 1, wherein the fusion of the toothbrush head portion (21) of the handle (2) and the toothbrush head plate (1) is made by ultrasonic welding. The bristle bristles 11 to which the bristle 60 is to be planted and the soft elastomeric moldings 13 through which the soft elastic hairs 70 are injection molded are formed and connected to each other and the side surfaces 17 Toothbrush head plate (1) formed with a channel (14) formed on the fusion surface (15) and the toothbrush head portion (21) to which the fusion surface (15) of the toothbrush head plate (1) are to be fused together. Plastic molding step of molding the handle 2, The natural rubber, the synthetic rubber, or the silicone fluid is supplied through the channel 14 to inject the soft elastic wool 70 into the soft elastic wool molding sphere 13 and the soft pad 71 to the side 17 at the same time. Soft forming step and And a bristles step of planting the bristles in the bristle bristle 11 of the toothbrush head plate (1), A fusion step of fusing the toothbrush head plate 1 in which the soft elastic hair 70 and the soft pad 71 are molded and the bristles 60 are implanted, to the toothbrush head 21 of the toothbrush handle 2; Toothbrush manufacturing method comprising a finishing step of cutting the bristles 60 implanted in the bristle bristle (11) of the toothbrush head plate (1) fused to the toothbrush head 21 in the desired shape and round the end portion round grinding. . The toothbrush manufacturing method of claim 8, wherein the toothbrush handle (2) is a double injection molding of natural rubber or synthetic rubber on the outer surface after plastic injection molding. The method of claim 8, wherein the fluid forming the soft elastic hair 70 and the soft pad 71 is made of styrene-ethylene-butadiene-styrene rubber (SEBS TPE; Styrene Ethylene Butadiene) using a natural rubber, a thermoplastic elastomer (Thermoplastic Elastomer) Toothbrush manufacturing method characterized in that any one of synthetic rubber and silicon (Silicon) such as styrene based Thermoplastic Elastomer, ethylene-propylene-diene rubber (EPDM). The toothbrush manufacturing method according to claim 8, wherein the fusion of the toothbrush head portion (21) and the toothbrush head plate (1) of the handle (2) is made by ultrasonic welding.

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