JP3208806U - Bidirectional sweep type lice comb and method of manufacturing the same - Google Patents

Abstract

Disclosed is a comb for treating lice infestation that can efficiently and effectively remove lice eggs and larvae. A comb includes a grip portion and a plurality of tooth portions. Each of the plurality of teeth includes a continuous groove or valley intended to catch and drag out larvae and lice present in the hair. The grooves or troughs form two groups that intersect each other along each comb or needle, thereby defining sharp edges and crossing areas that face in opposite directions. [Selection] Figure 1

Description

Technical Description Field of the Invention The present invention is directed to a comb for treating lice infestation intended to remove lice eggs and larvae attached to the hair, and more specifically, the book The invention relates to an improved comb that makes it possible to remove larvae and lice from the hair by sweeping the hair in one direction or in the opposite direction. In this case, since it can be removed in both directions in this way, it becomes more efficient as compared to a conventionally known comb of the same type.

Background of the Invention Lice infestation affects people at all levels in the entire population, but the greatest impact is on school children, especially during school and off-campus activities and sports. It begins to occur when a young child begins to come into contact with others.

  The louse stays on the scalp and gives birth to eggs in the hair, that is, the human lice commonly known as lice, the eggs of the pubic lice (Phtirius pubis) and similar species.

  Many compounds have been developed to treat this parasitic disease, but in addition to lice and larvae that do not cause side effects, such as those used to apply chemical products. Various combs for removal have also been developed.

  Various comb designs have become popular in order to avoid the use of chemicals as much as possible. Numerous needle parts, tooth parts or steel wires are attached to the gripping parts provided in such various comb designs, and the gap between them is one hair between adjacent tooth parts. It is designed to be able to pass through just as much as possible, so that whatever it attaches to it, especially larvae, will be held between such comb teeth. In this way, it is possible to remove as many larvae as possible by passing the comb through the patient's hair.

  One of the combs that has most effectively achieved the goal of removing larvae better is disclosed in the Argentine patent AR03275B1 and the corresponding US 5.873.374. Both of these are owned by the applicant of the present invention and disclose a comb for lice having a needle portion with an uneven outer peripheral surface as specifically defined by the appended claims. . The comb includes a gripping portion and a plurality of, preferably steel teeth, a wire or a needle portion, and each needle portion includes an end portion attached to the handle, a contact end portion, and an outer peripheral surface. Have The contact end of each needle has a sharp tip and a rounded tip. According to the concepts of these patents, the novelty of this comb over the prior art is that there are irregularities on the outer peripheral surface of each needle section designed to catch and drag larvae attached to the hair. The comb also has other features such as a distance of 50 μm to 100 μm between adjacent needle portions. Each needle portion has a total length in the range of 40 mm to 80 mm, and useful lengths other than the handle are in the range of 20 mm to 60 mm. The uneven features mentioned in the Argentine patent AR03275B1 and its US counterpart are preferably based on the provision of helical grooves with a helical pitch of less than 4 mm.

  The passages and grooves of the Argentine patent AR03275B1 improve larvae retention and drag, the purpose of the grooves is to change the geometric shape designed to catch larvae abruptly to smooth the tooth surface To provide live edges. However, during use, the comb is inserted into the hair from above and lowered along the hair, dragging the larvae from the lower end of the hair, thus moving the needle and the hair relative to each other so that the hair becomes a needle. It was observed that it reached the bottom of the gap between the parts and exited from there. The purpose is to catch larvae by sharp edges or sharp edges in the groove along the path. However, when the hair passes through the gap between the needle portions in one direction, not all the boundary portions of all the groove portions are sharp edges. This is because half of the boundary portion is smooth, as will be described below in relation to the drawings illustrating the prior art.

  As described above, the inventor of the present application is more efficient than combs known in the art by providing sharp edges in the groove portions in the gap between the needle portions in order to move the comb in both directions. In order to achieve effective removal, it is intended to improve the functional aspects of the teeth in the head lice comb.

BRIEF DESCRIPTION OF THE INVENTION Accordingly, the object of the present invention is to provide needles, teeth or teeth with grooves or valleys designed to hold, catch and drag larvae, dust and lice without damaging the hair. It is to provide a comb for the treatment of lice infestation comprising a wire.

  Yet another idea of the present invention is to provide a new comb for head lice treatment that includes a grip handle and a plurality of teeth. Each of the plurality of teeth includes a continuous groove or valley intended to catch and drag lice and larvae present in the hair. The grooves or valleys form part of two groups that intersect along each comb or needle, thereby defining sharp edges and intersecting areas that face away from each other.

  Still another object of the present invention is to provide a comb for treating lice infestation of a type having a grip handle, wherein a plurality of teeth are separated from each other by a gap for passing hair. In order to hold the larvae and lice present in them and drag them together, they have protruding rough intermediate teeth. The rough means is formed by a plurality of grooves or continuous valleys defined on the surface of at least one longitudinal portion of each of the teeth. The plurality of grooves or valleys include at least two groups of grooves or valleys. That is, a first group of grooves extending spirally around each tooth in the first rotation direction and a first crossing the first rotation direction spirally around each tooth. And a second group of grooves extending in the two directions. The said edge defines the groove part sharpened in both directions in each of the clearance gaps between tooth parts.

  Yet another object of the present invention is to provide a comb for treating lice, the comb for treating lice includes a grip handle and a plurality of teeth, each of which is present in the hair. It is provided with a groove or continuous valley intended to catch and drag larvae and lice. Each groove or valley has at least one side surface formed by a protruding boundary.

  Yet another object of the present invention is to provide a method for forming grooves and protrusions on the teeth of a comb for treating head lice comprising a grip and a plurality of, preferably metal, teeth or needles or wires. Is to provide. In the method, a rolling tool is applied to each of the comb teeth, and the groove is formed by applying pressure as a force vector inclined with respect to the surface of the tooth, and the material adjacent to the groove is grooved. Moving toward at least one side of the groove, thereby forming such a boundary on at least one side of the groove.

BRIEF DESCRIPTION OF THE DRAWINGS In order to make the subject matter of the present invention clear and easy to understand, the subject matter of the present invention is shown in several figures, in which the present invention is one of the preferred forms of expression. It is only shown as an example in form.

1 is a front view showing a head louse treatment comb according to the prior art. FIG. It is an enlarged front view which shows three tooth parts which the comb of FIG. 1 has. It is an enlarged front view which shows the three teeth part of the comb according to preferable embodiment of this invention. It is a more detailed view of a gap between two teeth in the present invention, and shows a larva attached to hair moving in opposite directions within the gap as indicated by an arrow. FIG. 5 is a detailed partial cross-sectional view showing two tooth portions in which groove portions are formed by rolling in order to provide protrusions on at least one side or both sides of the groove portions for the purpose of improving larva capturing ability. It is a detailed fragmentary sectional view which shows the tool produced by applying a pressure to the groove part on the surface of a comb tooth, in the state which left the protrusion edge only on the one side of the groove part. It is a fragmentary sectional view which shows the tool produced by applying a pressure to the groove part on the surface of a comb tooth in the state which left the protrusion edge on both sides of the groove part.

Detailed Description of the Invention Referring now to the drawings, it can be seen that the present invention is a comb for the treatment of head lice. The comb as a whole is identified by reference numeral 1 and may look like a conventional comb when viewed from a distance. This type of comb 1 includes a grip handle 2, and a plurality of tooth portions or needle portions 3 are attached to the inside of the grip handle 2. A plurality of teeth or needles 3 extend parallel to each other from the handle 2 and maintain a convenient distance for passing a single hair to catch larvae attached to the hair. . For example, the gap between teeth may be between 50 μm and 100 μm, and this distance has already been found to be effective for this comb according to the Argentine patent AR03275B1 by the same inventor and owner as the present invention. doing. Similarly, the tooth or needle may have a total length in the range of 40-80 mm, and useful lengths excluding the handle may be in the range of 20-60 mm. In the aforementioned patent, the teeth or needles are provided with rough means for holding and dragging larvae and lice present in the hair.

  In one of the most efficient and effective embodiments, the rough means of the teeth or needles 3a, 3b, 3c are defined on a surface on at least a portion of the length of each tooth. A continuous groove or valley. A groove identified by reference numeral 4 in FIG. 2 is spirally engraved around each tooth 3. All the spiral grooves are provided in the same direction. That is, as can be seen from the drawing, these groove portions are wound around the needle portion in a spiral direction around the needle portion as viewed from above.

  Of the grooves, the area facing the gap 5 separating each pair of adjacent teeth has two boundaries, namely an upper boundary 6 and a lower boundary 7 as shown in FIG. However, only some of the adjacent grooves are referenced to simplify the figure. Therefore, since each spiral groove portion shows a specific inclination when intersecting the gap 5, the upper boundary portion 6 is formed by the cylindrical wall 8 of the tooth portion and the side wall 9 of the groove portion 4, and this As a result, an acute angle is formed as clearly shown in FIG. On the contrary, the lower boundary portion 7 is formed by the cylindrical wall 8 of the tooth portion and the side wall 10 of the groove portion 4, thereby forming an obtuse angle, that is, an angle exceeding 90 °. As a result, the boundary portion 6 has a sharp edge on the tooth portion 3c shown on the right side of the figure because of a sharp or acute downward configuration. On the other hand, since the boundary part 7 does not have a sharp or acute side part, it becomes a dull edge or a smooth edge. On the opposite side of the gap 5, the tooth 3 b will also have an upwardly sharpened edge (live edge) 6 and a downwardly dull edge (dead edge) 7 in this case.

  For example, when a comb is used for a child with long hair, the comb begins to be inserted from the top of the head, is lowered along the hair, and reaches the lower end of the child's hair. When the comb begins to be inserted from the top of the head, the comb is inserted into the hair, that is, the direction in which the hair 11 passes through the comb as shown by the arrows appearing above the hair in FIG. 2 is the teeth 3b and 3c. Will be upward. When the comb is pulled down to the bottom of the hair, as shown by the arrow appearing below the hair 11, the hair exits the gap 5 and advances toward the tip of the tooth. Since it is clear that the tooth part moves along the hair, naturally, the upward movement and the downward movement of the hair within the gap 5 are the relative movement between the hair and the tooth part. Become.

  As shown in FIG. 2, when the hair infested with larva moves upward, the hair moves to two sharp edges 6, that is, the edge of the tooth 3 c shown on the right side of FIG. 2. Only a dull edge 7 does not contact the hair surface. This is because these blunt edges 7 have an obtuse angle, and furthermore, the boundary portion 7 follows this hair without facing the passing hair. This is because the hair sliding along the tooth surface 8 passes through the boundary portion 7. On the other hand, the boundary of the tooth 3b shown in the center of the figure will also be a sharp boundary 6 and a blunt boundary 7. However, since the sharp boundary portions 6 are directed upward, there is no influence on the passage of hair, while the boundary portion 7 facing the hair that passes while rising is a sharp angled boundary portion. It is not present and is therefore inefficient to function on the hair surface to catch larvae attached to the hair. The hair 11 faces only the sharp boundary portion 6 in the central tooth portion 3b when descending from above. Therefore, if the comb is not always passed inside and outside with respect to the hair, the comb will only face the sharp edge of one tooth in the gap 5 and the treatment will be inefficient as a result. .

  In order to solve this problem, the present invention provides two different groups of groove or valley patterns, as shown in FIGS. One pattern has a spiral configuration in one direction and the other pattern has a spiral configuration in the opposite direction.

  More precisely, the comb may have an overall configuration as shown in FIG. 1, but unlike the prior art, the plurality of grooves or valleys includes at least two groups of grooves or valleys. That is, the first group of grooves 4 extending in the first rotation direction spirally around each tooth portion, and the first rotation direction intersecting spirally around each tooth portion. And a second group of grooves 12 extending in the second direction. When viewed from above the teeth, the group of grooves 4 descends along the teeth by rotating in the clockwise direction, and in the second group 12, the grooves descend while rotating in the opposite direction. Then, the groove portions of both groups are crossed to define sharp edges in both directions in each gap 5 between the tooth portions 3.

  When the grooves 4 and 12 intersect each other, they form an intersecting area 13 that can be randomly located outside the gap 5 or inside the gap 5. The gap 5 between the tooth portions may be 0.05 mm to 0.1 mm, and the groove portions of the same group extend in the circumferential direction around the tooth portion and are spaced from 0.5 mm to 5 mm apart. Arranged. Due to the configuration in which the two groups of spiral grooves extend in opposite directions, the tooth 3b is always present when the hair 11 carrying the larvae “L” (see FIG. 4) contacts the pointed edge 6. Alternatively, the contact from the tooth portion 3c, that is, the contact from any one of the side tooth portions in the gap 5 through which the hair slips is ensured. In this way, the larva is surely caught by any of the sharp edges 6. In FIG. 4, the larvae “L” will come in contact with two sharp edges 6a and 6b in the tooth 3b and a sharp edge 6c in the tooth 3c. When the larva is lowered, the larva comes into contact with the sharp edge 6d of the tooth 3b and the sharp edge 6e of the tooth 3c. This will greatly increase the probability of catching the larvae “L” and dragging them together with foreign objects and lice sticking to the patient or user's hair.

  Also according to the present invention, the groove 4 and the groove 12 may be formed by a cutting technique or preferably by rolling. More precisely, according to another aspect of the present invention, as best shown in FIGS. 6 and 7, each groove or spiral valley 5 and 12 has a cylindrical tooth on at least one side. It has a protrusion 14 protruding above the generally smooth surface of part 3. In FIG. 5, only four grooves are shown for clarity, but it can be seen that the laminate and the boundary 14 are also applicable to the grooves 12 of FIGS. 3 and 4. Preferably, the two boundary portions 14 and 15 are provided on both sides of the groove portion 4 or the groove portion 12 so as to be located on both sides of the groove portion 4 or 12, but in order to achieve a desired effect Obviously, a single flange is also possible. In addition, the flanges 14 and 15 may have a tip 16 that may define sharp edges or gently rounded edges, depending on the desired design, materials used, and the like.

  The tooth portions may be arranged, for example, at a distance of 50 μm to 100 μm, and the raised protrusions are preferably 0.005 mm to 0.04 mm, more preferably a maximum distance of 0.01 mm, and the tooth surface “ Extends above "S". These circumferential grooves may be arranged at a distance of 0.5 mm to 4 mm, and the spiral grooves may have a helical pitch of 0.5 mm to 4 mm.

  The groove portions of adjacent tooth portions may be arranged such that adjacent tooth portion protrusions 14 and 15 are offset as shown in FIG. 5 or face each other. In either case, the distance between the two adjacent teeth 9 will be small and this will limit the passage of the hair 11 holding the larvae or foreign objects 17.

  In another aspect, the present invention provides a method for forming the grooves 4, 12 and the protrusions 14, 15 on the teeth 3 of the comb 1. In practice, the grooves on the prior art comb teeth are achieved by using a cutting tool to machine the tooth surface, but as a result, the grooves become very rough and polish the hair. In contrast, the present invention uses another method that successfully solves the two problems of known lice combs. One problem is the wearability of the grooves, and another problem is that there is insufficient tissue in the teeth to capture the larvae more effectively.

  According to this aspect of the invention, the groove is created using a rolling technique rather than cutting. More specifically, the step of deforming the tooth material is performed only once. This stage includes the step of forming the grooves 4 and 12 by applying the pressure by applying the rolling tool 17 to each of the comb teeth. The pressure is applied in response to a force vector Fl that can be tilted with respect to the tooth surface “S”, as shown in FIG. 6, and the material adjacent to the groove is directed to at least one of its sides. The protrusion 14 can be formed on at least the side surface of the groove.

  Alternatively, the method of the present invention may use a rolling tool 18, as shown in FIG. The rolling tool 18 applies a force F2 perpendicular to the surface of the tooth portion 3 to move the material adjacent to the groove portion toward both sides of the groove portion, so that the protrusions 14 and 15 are formed on both sides of the groove portion. Form.

  This manufacturing process is cold rolling and the grooves or slots 4, 12 can be made, for example, by rotating the tool around the wire as it passes through the tool. In practice, there may be one or more tools 17 or 18.

  The present invention presents an improvement over the prior art. For example, the Argentine patent AR03275Bl succeeds in dropping a larvae into a 90 degree slit in the path and catching the larvae when they are in a groove on the tooth. In the present invention with one or two protrusions 14, 15, the areas that have the most positive effect on the larvae, ie protrusions and grooves, can be expanded. In addition, a protrusion can be provided that provides an additional trap. At this time, the larva collides with the protrusion more frequently than dropping into the groove described in the patent by the same inventor.

  Two effects are achieved by the protrusions or undulations of the present invention. As the rough area becomes wider, the probability of catching larvae increases. In this case, it is easy to collide with the larvae by extending some along the cylindrical generatrix. For example, a boundary projecting at an angle of 90 degrees with respect to the larvae movement drags and / or breaks down the larvae in the path. By paying attention to the path of these combs throughout the head, the movement of the flutes and protruding teeth with respect to the larvae on the hair will cause a component perpendicular to the tooth and another component in the direction of its axis It can be seen that Next, the complex movement of the larvae with respect to the groove is approximately 90 degrees from the course. That is, by passing the comb, the larva attached to the hair is hooked on the protrusion or groove.

  FIG. 5 is a cross-sectional view in the longitudinal direction of the tooth portion, showing a larva attached to the hair pulled by the protrusion and the groove and a contact cross section. As shown in this figure, the height “H” of each protrusion 14 and 15 will not exceed 0.04 mm.

  Another improvement of the present invention is that if the chips are not removed in the manufacturing process, the tooth material will be in a plastic state under rolling pressure and will be carried over the edge and deposited there, thereby Forming the projections 14 and 15. Therefore, the groove inner surface obtained in this way does not cause friction, and the projections exhibit a very positive action.

  The rolling method used in the manufacturing process also improves the resistance of the teeth to bending, which is an important variable for comb effectiveness. This improvement is brought about by the resulting notch not cutting the fibers of the material in the same way as removing chips.

Also according to the present invention, the groove 4 and the groove 12 may be formed by a cutting technique or preferably by rolling. More precisely, according to another aspect of the present invention, as best shown in FIGS. 6 and 7, each groove or spiral valley 4 and 12 has a cylindrical tooth on at least one side. It has a protrusion 14 protruding above the generally smooth surface of part 3. In FIG. 5, only four grooves are shown for clarity, but it can be seen that the laminate and the boundary 14 are also applicable to the grooves 12 of FIGS. 3 and 4. Preferably, the two boundary portions 14 and 15 are provided on both sides of the groove portion 4 or the groove portion 12 so as to be located on both sides of the groove portion 4 or 12, but in order to achieve a desired effect Obviously, a single flange is also possible. In addition, the flanges 14 and 15 may have a tip 16 that may define sharp edges or gently rounded edges, depending on the desired design, materials used, and the like.

Claims (15)

A comb for treating head lice of the type including a grip handle, wherein a plurality of tooth portions protrude from the grip portion, and the tooth portions are arranged at a distance that allows a single hair to pass through the comb. Comprising rough means for holding and dragging lice and larvae present, said rough means comprising a plurality of continuous grooves or valleys defined on the surface of at least one longitudinal segment of each of said teeth With
The plurality of grooves or valleys are formed by at least two groups of grooves or valleys, and the at least two groups of grooves or valleys, that is, spirally around each tooth in the first rotational direction. A first group of grooves extending and a second group of grooves extending in a second direction that intersects the first rotational direction in a spiral fashion around each tooth. A groove is a comb that defines sharp edges in both directions in each of the gaps between the teeth.   The comb of claim 1, wherein the first group of grooves intersects the second group of grooves defining an intersection area.   The comb of claim 2, wherein the intersecting areas are randomly arranged around each tooth along each tooth.   The comb according to claim 2, wherein the intersecting area is arranged in the gap between the tooth portions.   The comb according to any one of claims 1 to 4, wherein the tooth portions are arranged at a distance of 0.05 mm to 0.1 mm.   The comb according to any one of claims 1 to 5, wherein the groove portion of one group extends circumferentially around the tooth portion and is arranged with a distance of 0.5 mm to 5 mm.   The comb according to any one of claims 1 to 6, wherein at least one side surface of the groove portion or the valley portion is formed by a boundary portion protruding along a tooth surface.   The tooth portion is disposed at a distance of 0.05 mm to 0.1 mm, and the raised boundary portion protrudes by 0.005 mm to 0.04 mm above the tooth surface. Comb.   The comb according to any one of claims 7 and 8, wherein each of the protruding boundaries has an upper edge.   The comb according to any one of claims 7 to 9, wherein the protruding boundary portions of adjacent tooth portions are shifted from each other.   The comb according to any one of claims 7 to 9, wherein among the adjacent tooth portions, the protruding boundary portions face each other.   The comb according to any one of claims 7 to 11, wherein the protruding boundary portion exists on both sides of each groove portion.   The comb according to any one of claims 1 to 12, wherein the groove is formed by rolling. A method for forming a boundary part and a groove part projecting on a tooth part of a comb according to any one of claims 1 to 13,
A rolling pressure tool is applied to each tooth portion of the comb to apply pressure as a force vector inclined with respect to the tooth surface to form the groove portion, and a material adjacent to the groove portion is used as the groove portion. The boundary portion is formed on at least one side of the groove portion.   The rolling tool applies a force perpendicular to the surface of the tooth part, and moves the material adjacent to the groove part to both sides of the groove part to form the boundary part on both sides of the groove part. 14. The method according to 14.

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