underwear
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TAKAGI CO LTD
- Filing Date
- 2022-12-26
- Publication Date
- 2026-07-31
AI Technical Summary
【0009】 本願発明では、マチ部の横側からの液漏れ防止を図る上で有利な下着が得られる。
Smart Images
Figure 0007898178000001 
Figure 0007898178000002 
Figure 0007898178000003
Abstract
Description
Technical Field
[0001] The present invention relates to underwear (such as shorts, sanitary shorts, pants, briefs, trunks, etc.) worn to cover the lower limbs.
Background Art
[0002] Conventionally, various types of underwear for the lower limbs have been proposed that can be equipped with an absorption pad (absorbent article) such as a sanitary napkin at the crotch (groin, gusset) part (Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, conventional underwear has a problem that the body fluid absorbed by the absorption pad easily leaks from the side of the crotch part.
[0005] The present invention has been made in consideration of the above matters, and an object thereof is to provide underwear that is advantageous in preventing liquid leakage from the side of the crotch part.
Means for Solving the Problems
[0006] In order to achieve the above object, the underwear according to the present invention is worn to cover the lower limbs, and on the back side of the crotch part in the underwear body (Body side when worn)Underwear having a crotch area for waterproofing, wherein a pair of waterproof side guards extending along both left and right edges of the crotch area are provided on the inner surface of the crotch area, the side guards are folded in half, the fold faces the center in the left-right direction of the crotch area, the front and rear ends of the side guards and the base on the opposite side of the fold are joined to the underwear body or the crotch area, the parts of the fold other than the front and rear ends are not joined to the underwear body or the crotch area, an elastic core material with a longitudinal dimension smaller than the fold passes through the fold, the front and rear ends of this core material are joined to the front and rear ends of the side guard, and the part between the front and rear ends of the core material is not joined to the side guard (Claim 1).
[0007] In the above-described underwear, a floating fabric piece is provided on the inner surface of the crotch area, and only the front and rear ends of this floating fabric piece are joined to the underwear body or the crotch area, and at least a portion of both the left and right edges of the floating fabric piece may be sandwiched between the side guard and the crotch area (Claim 2).
[0008] In the above-described underwear, the crotch fabric may be wider at the rear end than at the front end, and the two folds provided on the pair of side guards may extend diagonally to the crotch fabric so that they are further apart from each other towards the rear (Claim 3). [Effects of the Invention]
[0009] The present invention provides underwear that is advantageous in preventing liquid leakage from the side of the gusset.
[0010] In other words, in the underwear according to each claim of this application, the crotch fabric, which provides a waterproof function to the back of the gusset, and the pair of waterproof side guards effectively prevent the liquid absorbed by the absorbent pad, such as a sanitary napkin, placed on the back of the crotch fabric from leaking to the outside. Furthermore, a core material that passes through the fold and is shorter than the fold functions to make the central part of the pair of side guards stand up, and the rising of the pair of side guards enhances the liquid leakage prevention effect. Moreover, since only the front and rear ends of the core material are joined to the side guards, and the middle part is not joined, not only is the restraint of the side guards by the core material suppressed, but the gathering of the side guards 9 allows the fabric to follow the changes in body shape and dimensions due to movements during wear, making it less likely for gaps to form between the fabric and the body, thus achieving a high liquid leakage prevention effect, while also making it easy to avoid unnecessary compression of the wearer's body by the entire side guard. Furthermore, by appropriately setting the dimensions and properties of the core material that passes through the folds of the side guard, it becomes easy to suppress the collapse of the side guard and, consequently, prevent the weakening of its leak-prevention effect due to such collapse.
[0011] In the underwear according to claim 2, by utilizing a floating fabric piece, sanitary napkins with wings can be attached securely, and accidental release of the attachment is less likely to occur due to the presence of side guards that sandwich the floating fabric piece between the crotch fabric.
[0012] In the underwear according to claim 3, the pair of side guards are not unnecessarily large, so as not to impair the comfort of wearing the underwear. Furthermore, even if the side guards are made larger than necessary, the excess portion does not stand up when worn, contributing to an improved leak-proof effect. Rather, it can prevent the absorbent pad from coming into contact with the wearer's skin, thus hindering its absorption of liquid. However, this inconvenience is avoided in the underwear of the present invention. [Brief explanation of the drawing]
[0013] [Figure 1] (A) and (B) are a front view and a rear view of underwear according to one embodiment of the present invention. [Figure 2] It is an explanatory view of the main part of the underwear. [Figure 3] It is a perspective view of the main part of the underwear. [Figure 4] (A) to (F) are explanatory views showing the positional relationship of each constituent member of the main part of the underwear. [Figure 5] (A) is a plan view showing the unfolded state of the side guard of the underwear, and (B) is a plan view showing the side guard in a folded state and the core material passed through it. [Figure 6] It is an explanatory view showing the relationship between the crotch cloth and the side guard of the underwear.
Mode for Carrying Out the Invention
[0014] The embodiments of the present invention will be described below.
[0015] The underwear shown in FIGS. 1(A) and (B) is shorts worn to cover the lower limbs, and includes an underwear body 5 formed by joining and integrating a front body 1 mainly covering the front side (such as the lower abdomen) of the wearer, a rear body 2 mainly covering the rear side (such as the buttocks) of the wearer, a waist part 3 covering around the waist, and a pair of leg opening parts 4 covering around the leg openings by sewing or the like. Each part constituting the underwear body 5 is made of a stretchable material, whereby the underwear body 5 is easily fitted to the body of the wearer.
[0016] The front body 1 is provided with a crotch part 6 covering the crotch of the wearer connected in series below the main body part 1A covering the front side of the wearer.
[0017] As shown in FIG. 1(B), the rear body 2 is composed of a left part 2A and a right part 2B divided into left and right along the rear center line of the wearer, and the front ends of each part 2A, 2B extend to the front side of the wearer (near the upper part of the crotch part 6).
[0018] The waist part 3 is provided so as to extend along the entire upper edges of the front body 1 and the rear body 2.
[0019] The leg opening part 4 is provided so as to extend along the entire leg opening (an opening for passing through the legs of the wearer) formed by the left and right edges of the gusset part 6 and the lower edge of the back body 2.
[0020] Note that the above configuration is merely an example of the underwear body 5, and the patterns and the like of each part constituting the underwear body 5 can be changed as appropriate. For example, in the above example, the gusset part 6 is included in the front body 1, but the gusset part 6 may be included in the back body 2 instead of the front body 1, or may be provided as an independent part (crotch part) without being included in either the front body 1 or the back body 2. Also, in this example, the entire main body part 1A of the front body 1 has a double structure, but it may have a single structure. Further, in this example, the back body 2 has a single structure, but it may have a double structure.
[0021] Then, as shown in FIGS. 1(A) and (B) and FIG. 4(A), for the gusset part 6 extending from the lower end part of the main body part 1A of the front body 1 to the lower end part on the rear side of the back body 2, as shown in FIG. 4(B), a crotch cloth 7 (also refer to FIG. 3) for providing a waterproof function (including a water repellent function and the like) on the back side (body side) of this gusset part 6 is provided. In this example, the crotch cloth 7 made of a waterproof fabric is provided so as to cover the entire surface of the gusset part 6, and the crotch cloth 7 is divided into a main part 7A that covers substantially the entire part of the gusset part 6 except the rear part and a sub-part 7B that covers the rear part of the gusset part 6 as shown in FIG. 4(B), and the entire periphery of each part 7A, 7B is joined and integrated to the gusset part 6 by sewing or the like.
[0022] As shown in Figure 4(C), a floating fabric piece 8 extending in the front-to-back direction is provided on the inner side (body side) of the main part 7A (crotch cloth 7). Only the front and rear ends of this floating fabric piece 8 are attached to the underwear body 5 or crotch cloth 7, while the middle part is not attached and can be separated from the crotch cloth 7 (main part 7A) (it is floating). Therefore, for example, if a winged type of sanitary napkin is used, it can be placed on the inside (body side) of the floating fabric piece 8, and the wings can be folded outwards from both sides of the floating fabric piece 8 (into the gap between the floating fabric piece 8 and the crotch cloth 7) to secure it firmly. The material of the floating fabric piece 8 is preferably suitable for adhesion to the adhesive part on the wings of the sanitary napkin, and while it is possible to use a non-stretchable or poorly stretchable fabric such as nylon fabric (marquisette), it is not particularly limited. The floating fabric piece 8 can also be used when using a cloth sanitary napkin that is wrapped around and secured in the crotch area.
[0023] As shown in Figure 2, the floating fabric piece 8 in this example has a long rectangular shape in the front-to-back direction, with a stitch (straight stitch) in the center in the left-to-right direction, and both left and right edges are folded outwards and sewn shut.
[0024] As shown in Figure 4(C), on the inner (body) side of the crotch cloth 7 with the floating fabric piece 8 in place, a pair of waterproof side guards 9 are provided, extending along both the left and right edges of the crotch cloth 7, as shown in Figure 4(D). As shown in Figures 2 and 3, the side guards 9 are folded in half, with the fold 9a facing the center of the crotch cloth 7 (gusset portion 6) in the left-right direction. The front and rear ends of the side guards 9 and the base 9b on the opposite side of the fold 9a are joined to the underwear body 5 or the crotch cloth 7, while the parts of the fold 9a other than the front and rear ends are not joined to the underwear body 5 or the crotch cloth 7.
[0025] As shown in Figure 5(A), the side guard 9 in this example has a symmetrical shape, and when folded in half along its axis of symmetry (see Figure 5(B)), the base 9b on the opposite side of the fold (axis of symmetry) 9a is configured to follow both the left and right edges of the crotch fabric 7.
[0026] On the other hand, as shown in Figures 2, 3, and 4(E), an elastic core material (elastic tape in this example) 10 is passed through each fold 9a of the pair of side guards 9 (inside the folded side guard 9). As shown in Figure 5(B), the length of the core material 10 is smaller than that of the fold 9a (for example, it can be about 70-90% of the length of the fold 9a). In this example, the front and rear ends of the core material 10 are joined to the front and rear ends of the side guards 9 (including cases where it is directly joined to the front and rear ends of the side guards 9, and cases where it is indirectly joined to the front and rear ends of the side guards 9 by joining it to the corresponding parts of the underwear body 5 or crotch fabric 7), and the part between the front and rear ends of the core material 10 is not joined to other parts such as the side guards 9.
[0027] In this way, the core material 10 passing through the fold 9a is made shorter than the fold 9a, and the front and rear ends of this short core material 10 are joined to the front and rear ends of the side guard 9, the underwear body 5, or the crotch fabric 7, while the middle section is left free without being joined. This makes it easier for the side guard 9 to stand up with the fold 9a as the apex relative to the crotch fabric 7 when the underwear is worn.
[0028] Furthermore, in the underwear of this example, an absorbent pad 11 such as a sanitary napkin can be used by placing (attaching) it between a pair of side guards 9, for example, as shown in Figures 3 and 4(F).
[0029] In the underwear described above, the crotch fabric 7, which provides waterproofing to the back of the gusset 6, and the pair of waterproof side guards 9 effectively prevent the liquid (body fluid) absorbed by the absorbent pad 11, such as a sanitary napkin, placed on the back of the crotch fabric 7 from leaking to the outside. Furthermore, the core material 10, which passes through the fold 9a and is shorter than the fold 9a, functions to raise the central part of the pair of side guards 9, thereby enhancing the liquid leakage prevention effect. Moreover, since only the front and rear ends of the core material 10 are joined to the front and rear ends of the side guards 9, and the middle part is not joined, not only is the restraint of the side guards 9 by the core material 10 reduced, but the gathering of the side guards 9 also allows the fabric to follow the changes in body shape and dimensions due to movement during wear, making it less likely for gaps to form between the fabric and the body, thus achieving a high liquid leakage prevention effect, while also making it easy to avoid unnecessary compression of the wearer's body by the entire side guard 9. Furthermore, by appropriately setting the dimensions and properties of the core material 10 that passes through the fold 9a of the side guard 9 (for example, by using a rubber stretch tape with appropriate thickness, width, elasticity, etc.), it becomes easy to suppress the crushing of the side guard 9 and, consequently, prevent the weakening of its leak-preventing effect due to such crushing.
[0030] On the other hand, since the front and rear ends of the side guard 9 are joined to the underwear body 5 or the crotch fabric 7, the side guard 9 does not protrude from its front and rear ends. Furthermore, as shown in Figure 4(D), the distance between the folds 9a of the pair of side guards 9 (distance in the left-right direction) is shorter than the left-right dimension of the crotch fabric 7, and since the front and rear ends and base 9b of the side guard 9 are joined to the underwear body 5 or the crotch fabric 7, pockets are formed at each of the four corners of the crotch fabric 7 covered by the pair of side guards 9. By inserting the ends of the absorbent pad 11 into each pocket (see Figure 4(F)), the absorbent pad 11 is less likely to shift position even if it is a wingless sanitary napkin, and leakage of bodily fluids caused by such shifting can be prevented.
[0031] Furthermore, as can be seen by comparing Figures 4(B) to (D) (see also Figure 2), in this example, at least a portion of both the left and right edges of the floating fabric piece 8 is sandwiched between the pair of side guards 9 and the crotch cloth 7, making it less likely for the absorbent pad 11 attached using the floating fabric piece 8 to be accidentally released.
[0032] Furthermore, as shown in Figure 4(B), the crotch fabric 7 is wider at the rear end than at the front end, and the two folds 9a on the pair of side guards 9 extend diagonally to the crotch fabric 7 so that they are further apart from each other towards the rear (see Figure 4(D)). This prevents the pair of side guards 9 from becoming unnecessarily large and does not impair the comfort of wearing the underwear. Moreover, even if the side guards are made larger than necessary, the excess portion will stand up when worn and will not contribute to improving the leakage prevention effect. Rather, it will prevent the absorbent pad from coming into contact with the wearer's skin and hinder its absorption of liquid, but this problem is avoided in the underwear of this example.
[0033] Here, as shown in Figure 6, the side guard 9 is shorter in the front-to-back direction than the crotch fabric 7 (Figure 6 shows only the right half of the crotch fabric 7 and does not show it divided into main part 7A and sub part 7B). The front and rear ends of the side guard 9 are joined to the crotch fabric 7 or the underwear body 5 so as to follow the front and rear ends of the crotch fabric 7. By making the front-to-back dimensions of the side guard 9, which is positioned closer to the body than the crotch fabric 7, shorter, the side guard 9 fits the body more easily. In addition, if both the front and rear edges of the side guard 9 are perpendicular to the fold 9a, it becomes easier to sew both the front and rear edges (front and rear ends) of the side guard 9 to the underwear body 5 or the crotch fabric 7.
[0034] As described above, the underwear in this example can prevent side leakage of bodily fluids caused by the wearer's movements, even when using various types of sanitary napkins or bodily fluid absorbent sheets as the absorbent pad 11. This is expected to reduce the need for expensive, high-performance disposable absorbents and to add a side-leak prevention function to cloth sanitary napkins, which are not often available in high-performance versions. Furthermore, for example, during the delicate period before and after menstruation, the underwear in this example can be worn without using the absorbent pad 11, thus reducing the waste of absorbent pads 11.
[0035] It should be noted that the present invention is not limited in any way to the embodiments described above, and can be implemented in various ways without departing from the spirit of the invention. For example, the following modifications can be given.
[0036] For example, as shown in Figures 4(B) and (C), in the above embodiment, the floating cloth piece 8 is shorter in the front-to-back direction than the crotch cloth 7. This is because the dimensions necessary for using a winged type sanitary napkin or a cloth sanitary napkin that wraps around and secures the crotch area as the absorbent pad 11 are secured. In other words, the embodiment is configured assuming that a long type sanitary napkin with a large absorbency is used as the absorbent pad 11. The front-to-back dimension of the crotch cloth 7 only needs to be at least the same as the floating cloth piece 8. Therefore, for example, of the main part 7A and sub-part 7B shown in Figure 4(B), it is conceivable to leave only the main part 7A as the crotch cloth 7 and eliminate the sub-part 7B. Alternatively, a part corresponding to the sub-part 7B (a part not covered by the floating cloth piece 8) could be placed in front of the main part 7A, and the floating cloth piece 8 could be moved relatively to the rear.
[0037] In the above embodiment, the crotch fabric 7 is provided as waterproof fabric only in the position that covers the gusset portion 6, but the area in which the waterproof fabric is provided can be changed in various ways. For example, the waterproof fabric may be provided in the position that covers the main body portion 1A of the front body 1 or in the position that covers the back body 2.
[0038] In the example shown in Figure 6, the side guard 9 is shorter than the crotch fabric 7, but the example is not limited to this, and the front-to-back dimensions of the crotch fabric 7 and the side guard 9 may be the same.
[0039] Needless to say, the modifications described herein may be combined as appropriate. [Explanation of Symbols]
[0040] 1 Front 1A Main body 2 Back 3 Waist parts 4 Leg opening parts 5. Underwear 6. Gusset 7 Crotch cloth 7A Main Parts 7B Sub-parts 8. Floating cloth pieces 9 Side Guard 9a Oriyama 9b base 10 Core material 11 absorbent pads
Claims
1. Underwear that is worn to cover the lower limbs, and has a crotch panel on the inside of the gusset (the side facing the body when worn) to provide waterproofing, A pair of waterproof side guards are provided on the inner side of the crotch fabric, extending along both the left and right edges of the crotch fabric. The side guard is folded in half, with the fold facing the center of the crotch area in the left-right direction. The front and rear ends of the side guard and the base on the opposite side of the fold are attached to the underwear body or crotch area, while the parts of the fold other than the front and rear ends are not attached to the underwear body or crotch area. Underwear characterized by having a core material that is elastic and smaller in the longitudinal direction than the fold running through the fold, with the front and rear ends of this core material being joined to the front and rear ends of the side guard, and the portion between the front and rear ends of the core material not being joined to the side guard.
2. The underwear according to claim 1, wherein a floating fabric piece is provided on the inner surface of the crotch fabric, and only the front and rear ends of this floating fabric piece are joined to the underwear body or crotch fabric, and at least a portion of both the left and right edges of the floating fabric piece is sandwiched between the side guard and the crotch fabric.
3. The underwear according to claim 1 or 2, wherein the crotch area is wider at the rear end than at the front end, and the two folds provided on the pair of side guards extend diagonally to the crotch area so that they are further apart from each other towards the rear.