Underpants

Abstract

The invention provides underpants capable of preventing odor from leaking to the outside of the underpants during accidental urination or defecation. The underpants (1) comprise outer pants (3) and inner pants (2) arranged on the inner side of the outer pants (3), a crotch part (6) of a water absorption layer (62) is arranged on the inner side face of the inner pants (2), and the periphery of the crotch part (6) is provided with an all-dimensional waterproof structure.

Description

Technical Field

[0001] The present invention relates to underwear that can be worn on the lower body. Background Art

[0002] As a conventional underwear that can be worn on the lower body, there is known an underwear consisting of a main body and a water-absorbing part provided inside the main body, and the water-absorbing part is hung on the main body so as to be located in the front center of the main body (see Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2013-227686 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] However, the underwear described in Patent Document 1 has a water-absorbing portion in the center of the wearer's front side (specifically, the lower abdomen) to absorb secretions such as urine. However, the wearer's back side (specifically, the buttocks) does not have a structure equivalent to an absorbent body, and therefore does not take into account the problem of feces. In addition, even if underwear with an absorbent body is worn, in the event of accidental urination or defecation, liquid excretion (specifically, urine, loose stools, etc.) may leak out of the underwear, emitting an unpleasant odor. Even if excrement does not leak out, the odor may escape from the underwear, causing discomfort to those around. This is a problem.

[0008] Technical solutions to the above technical problems

[0009] Therefore, an object of one aspect of the present invention is to provide a technology that can prevent odor from escaping from the outside of underwear in the event of accidental urination or defecation.

[0010] In order to solve the above problems, the present invention discloses a pair of underwear, characterized in that it includes outer pants and inner pants arranged on the inner side of the outer pants, a crotch portion with a water-absorbing layer is installed on the inner side of the inner pants, and a waterproof structure is provided around the entire circumference of the crotch portion.

[0011] According to the underwear described in the present invention, it can be set that the outer pants and the inner pants are connected to each other only at the upper edge of the outer pants and the inner pants by sewing the upper edge of the outer pants, the upper edge of the inner pants and the lower edge of the waist elastic band together.

[0012] According to the underwear described in the present invention, it can be set that the inner pants have a front part and a back part, and side parts are provided between the front part and the back part on the left and right sides of the inner pants, the outer sides of the front part and the back part have a waterproof function, and the side parts are formed of stretchable fabric.

[0013] According to the underwear of the present invention, it can be provided that the lower right end portion and the lower left end portion of the inner pants are respectively provided with trouser leg openings, and the opening side edges of the trouser leg openings have a waterproof structure.

[0014] According to the underwear of the present invention, it can be set that the lower right end and the lower left end of the inner pants are respectively equipped with trouser leg openings, the trouser leg openings fit tightly around the wearer's thighs, and the outer sides of the trouser leg openings have a waterproof function.

[0015] According to the underwear of the present invention, it can be provided that the outer pants have a deodorizing function.

[0016] According to the underwear of the present invention, it can be provided that the inner pants have a front portion and a back portion, and the front portion and the back portion are integrally formed of a whole piece of fabric.

[0017] According to the underwear of the present invention, it can be configured that neither the inner pants nor the outer pants are provided with an opening for urination.

[0018] According to the underwear described in the present invention, it can be set that the waterproof structure of the crotch part is constructed by: using a strip-shaped fabric that is waterproofed on at least one side, folding the fabric in half along the long side of the strip so that the waterproof side is located on the inner side, and attaching and sewing the fabric in this state in a manner of clamping and framing the end portions of the crotch part.

[0019] According to the underwear described in the present invention, it can be set that the inner pants have a front part and a back part, and the lower right end and lower left end of the front part and the back part are respectively equipped with trouser leg openings, and the part near the connection between the front part and the back part and the trouser leg openings in the waterproof structure of the crotch is constructed as follows: a fabric that is waterproofed on at least one side and formed into a strip, the fabric is folded in half along the long side direction of the strip so that the waterproofed side is located on the inside, and the fabric in this state is attached and sewn in a manner of clamping and framing the ends of the crotch part, the ends of the front part and the back part, and the ends of the trouser leg openings.

[0020] According to the underwear of the present invention, the waterproof structure of the trouser leg opening can be configured as follows: a strip of fabric is used which is waterproofed on at least one side, the fabric is folded in half along the long side of the strip so that the waterproofed side is located on the inner side, and the fabric in this state is attached and sewn in a manner so as to clamp and frame the end portion of the opening side of the trouser leg opening.

[0021] Effects of the Invention

[0022] According to the present invention, it is possible to prevent odor from leaking from underwear in the event of accidental urination or defecation.

[0023] Figure 1 is a perspective view of underwear according to an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Front view of the panties shown.

[0025] Figure 3 yes Figure 1 Rear view of the panties shown.

[0026] Figure 4 yes Figure 1 A front view of the outer pant of the panty shown.

[0027] Figure 5 yes Figure 4 Rear view of the outer side of the pants.

[0028] Figure 6 yes Figure 1 A front view of the inner pant of the panties shown.

[0029] Figure 7 Observed from the back side Figure 6 A diagram of the front of the inner pants shown.

[0030] Figure 8 yes Figure 6 Rear view of the inner side of the pants.

[0031] Figure 9 Observed from the front Figure 6 A diagram of the back of the inner pants shown.

[0032] Figure 10 yes Figure 6 Exploded view of the inner side of the pants.

[0033] Figure 11 Yes Figure 6 A longitudinal cross-sectional view of the structure of the lower right leg opening / lower left leg opening of the inner trousers shown.

[0034] Figure 12 Yes Figure 11A longitudinal sectional view of the structure of the waterproof edge of the lower right trouser leg opening / lower left trouser leg opening.

[0035] Figure 13 Yes Figure 6 A longitudinal cross-sectional view of the structure of the inner trousers portion having the crotch portion installed therein.

[0036] Figure 14 Yes Figure 13 A longitudinal sectional view of the structure of the waterproof seamed portion of the crotch.

[0037] Figure 15 Yes Figure 13 A longitudinal sectional view of another structure of a waterproof seamed portion of a crotch portion.

[0038] Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. In addition, each drawing is a schematic diagram for explaining an example of a specific configuration of the underpants of the present invention and does not strictly represent the dimensional relationship between the components.

[0039] In the description of the present invention, as shown in the various figures, the up-down direction is defined along each axis of the three-dimensional rectangular coordinate system, and upward and downward are defined according to the direction of each arrow. The front-back direction is also defined, and forward and backward are defined according to the direction of each arrow. The left-right direction is further defined, and rightward and leftward are defined according to the direction of each arrow. The front-back direction and the left-right direction are perpendicular to each other in the same plane (specifically, the horizontal plane), and the up-down direction is perpendicular to the front-back direction and the left-right direction (extending to the horizontal plane). The view from the front along the front-back direction is a front view, the view from the back is a back view, the view from the left-right direction is a side view, and the view from the top along the up-down direction is a plan view. However, the distinctions between front (front), back (back), left, and right are made only for the purpose of explaining the present invention and do not specify the directions of the underwear involved in the present invention in the state of use.

[0040] For the purposes of this invention, the following definitions are also provided. Wearing underwear refers to the state in which the underwear is worn on the body (specifically, the lower torso, lower abdomen, or buttocks). Underwear is worn on the body underneath clothing, but it can also be worn so that at least a portion of it is exposed to the outside.

[0041] The inside refers to the side that is closer to the wearer's skin when wearing underwear. The outside refers to the side opposite to the inside, that is, the side that is closer to the wearer's clothes when wearing underwear.

[0042] (Overall structure)

[0043] Figure 1 This is a perspective view of underwear 1 in an embodiment of an example of a specific structural aspect of underwear according to the present invention. Figure 2 This is a front view of the underwear 1 in the embodiment. Figure 3This is a back view of the underwear 1 according to the embodiment.

[0044] The underwear 1 in the embodiment includes an outer pants 3 and an inner pants 2 arranged inside the outer pants 3. A crotch portion 6 having a water-absorbing layer 62 is attached to the inner side of the inner pants 2, and a waterproof structure is provided around the crotch portion 6 that spans the entire circumference.

[0045] The briefs 1 are generally constructed of an outer pant 3 and an inner pant 2 disposed inside the outer pant 3 .

[0046] The inner pants 2 are located on the side that contacts the wearer's body (specifically, the lower torso, lower abdomen, and buttocks) when the underwear 1 is worn.

[0047] The outer pants 3 are located outside the inner pants 2 when the underwear 1 is worn, so that the inner pants 2 are between the outer pants 3 and the wearer's body, and the outer pants 3 cover the outside of the inner pants 2.

[0048] In addition, neither the inner pants 2 nor the outer pants 3 is provided with a urination opening in the center of the front side (specifically, the lower abdomen side) when worn. In other words, to prevent excretion, especially liquid excretion (specifically, urine, loose stools, etc.) discharged in the inner pants 2 from leaking out of the inner pants 2 and the outer pants 3, or to prevent the odor of excretion from escaping out of the inner pants 2 and the outer pants 3, the inner pants 2 and the outer pants 3 are provided with no unnecessary openings.

[0049] (Outer pants)

[0050] Figure 4 This is a front view of the outer pants 3 of the underwear 1 in the embodiment. Figure 5 It is a back view of the outer pants 3.

[0051] The outer pants 3 include a front crotch portion 31 , a right front portion 32R, a left front portion 32L, an outer back portion 33 , a crotch portion 34 and a waist elastic band 35 .

[0052] When the underwear 1 is worn, the front crotch portion 31, the right front portion 32R and the left front portion 32L are located on the front side of the wearer (specifically, the lower abdomen side), and the outer rear portion 33 is located on the rear side of the wearer (specifically, the buttocks side).

[0053] When the underwear 1 is worn, the outer rear portion 33 located on the wearer's rear side, the right front portion 32R extending from the right end of the outer rear portion 33 to the wearer's front side, and the left front portion 32L extending from the left end of the outer rear portion 33 to the wearer's front side are composed of a single piece of fabric.

[0054] The front crotch portion 31 is located at the center of the front side (specifically, the lower abdomen side) of the wearer when the underwear 1 is worn.

[0055] The right end of the front crotch portion 31 and the upper left end of the right front portion 32R are sewn together at the right sewing portion 36R, and the left end of the front crotch portion 31 and the upper right end of the left front portion 32L are sewn together at the left sewing portion 36L.

[0056] The front end of the crotch portion 34 (in other words, the upper end on the front side) is sewn to the lower end of the front crotch portion 31, the lower left end of the right front portion 32R, and the lower right end of the left front portion 32L at the front side sewing portion 37F. The rear end of the crotch portion 34 (in other words, the upper end on the rear side) is sewn to the lower end center portion of the outer rear portion 33 and its left and right side portions at the rear side sewing portion 37B.

[0057] Through the above-mentioned structure, the outer pants 3 have a right trouser leg opening 38R at the lower end of the right side portion of the right front part 32R and the outer back part 33 for the wearer's right leg (specifically, the right thigh) to pass through, and a left trouser leg opening 38L at the lower end of the left side portion of the left front part 32L and the outer back part 33 for the wearer's left leg (specifically, the left thigh) to pass through.

[0058] The front crotch portion 31, the right front portion 32R, the left front portion 32L, the outer back portion 33 and the crotch portion 34 of the outer pants 3 can be made of, for example, plain knitted fabric (specifically, containing more than 90% and less than 95% cotton and more than 5% and less than 10% spandex, with a basis weight of more than 150g and less than 160g).

[0059] The fabrics (for example, plain knitted fabric) used for the front crotch portion 31, the right front portion 32R, the left front portion 32L, the outer back portion 33 and the crotch portion 34 of the outer pants 3 may be subjected to a deodorizing treatment.

[0060] The outer pants 3 (specifically, the front crotch portion 31, the right front portion 32R, the left front portion 32L, the outer back portion 33, and the crotch portion 34) can be treated with a deodorizing treatment to deodorize excrement odors such as ammonia, hydrogen sulfide, acetic acid, methyl mercaptan, and indole. The outer pants 3 can be treated with a deodorizing treatment to deodorize methyl mercaptan, a particularly effective excrement odor.

[0061] The outer pants 3 (specifically, the front crotch portion 31, the right front portion 32R, the left front portion 32L, the outer back portion 33, and the crotch portion 34) may be impregnated with at least one agent having a deodorizing effect, such as a silver ion zeolite carrier (ionicity: anionic, pH: weakly alkaline), an inorganic metal oxide (ionicity: anionic, pH: weakly alkaline), a resin (ionicity: anionic, pH: neutral), and a special thickening and dispersing agent (ionicity: anionic, pH: neutral). In order to achieve an excellent deodorizing effect, particularly against methyl mercaptan, it is preferable to impregnate the outer pants 3 with a silver ion zeolite carrier, a resin, or a special thickening and dispersing agent as a deodorizing agent.

[0062] The outer pants 3 (specifically, the front crotch portion 31, the right front portion 32R, the left front portion 32L, the outer back portion 33, and the crotch portion 34) are imparted with a deodorizing function, for example, by employing an impregnation process. Specifically, the impregnation process comprises the steps of immersing a target substrate (e.g., a plain knitted fabric) in an aqueous solution containing at least one of a silver ion zeolite carrier, an inorganic metal oxide, a resin, and a special thickening dispersant (preferably, an aqueous solution containing a silver ion zeolite carrier, a resin, and a special thickening dispersant) and allowing the substrate to absorb the aqueous solution; passing the substrate that has absorbed the aqueous solution through a pair of rollers so that the aqueous solution evenly permeates the substrate; performing a preliminary drying of the substrate; and performing a high-temperature drying of the substrate. The impregnation process imparts a deodorizing function to the substrate constituting the outer pants 3.

[0063] The waist elastic band 35 is disposed around the upper ends of the front crotch portion 31, the right front portion 32R, the left front portion 32L, and the outer rear portion 33. When the underpants 1 are worn, the elastic band is wrapped around the wearer's waist and sewn together at the annular seam 39. For example, a jacquard elastic band can be used for the waist elastic band 35. The waist elastic band 35 (e.g., jacquard elastic band) can be composed of, for example, 52% nylon, 38% polyester, and 10% spandex.

[0064] (Underwear)

[0065] Figure 6 This is a front view of the inner pants 2 of the underwear 1 in the embodiment. Figure 7 This is a view of the front portion 21 of the inner pants 2 as viewed from the rear side. Figure 8 This is the back view of inner pants 2. Figure 9 This is a view of the back portion 22 of the inner pants from the front. Figure 10 It is an exploded view of the inner pants 2.

[0066] The inner pants 2 include a front portion 21 , a back portion 22 , a right side panel 25R, a left side panel 25L, a right leg opening 5R, a left leg opening 5L, and a crotch portion 6 .

[0067] When the underwear 1 is worn, the front portion 21 is located on the front side of the wearer (specifically, the lower abdomen side), and the back portion 22 is located on the back side of the wearer (specifically, the buttocks side).

[0068] When the underwear 1 is worn, the front portion 21, located on the front side of the wearer, and the back portion 22, which is continuous with the lower end of the front portion 21 (i.e., the portion located at the wearer's crotch when the underwear 1 is worn) and located on the wearer's back side, are made of a single piece of fabric. In other words, the inner pants 2 have no unnecessary cuts to prevent liquid excretion (specifically, urine, loose stools, etc.) excreted by the wearer from leaking outside the inner pants 2, or to prevent the odor of excretion from leaking outside the inner pants 2.

[0069] The front portion 21 and the back portion 22 of the inner pants 2 can be formed of, for example, a plain knitted fabric (specifically, the composition is 90%-95% cotton and 5%-10% polyurethane, with a basis weight of 150g-160g).

[0070] The fabrics (eg, jersey fabrics) used for the front portion 21 and the back portion 22 of the inner pants 2 may be subjected to a deodorizing treatment, a waterproof treatment, or a waterproof and moisture-permeable treatment.

[0071] The front portion 21 and the back portion 22 of the inner pants 2 can be polyurethane coated on their outer surfaces (i.e., the surfaces that come into contact with the inner surfaces of the outer pants 3) to ensure waterproofing. Alternatively, waterproofing can be ensured by adhering a waterproof sheet or film to the front portion 21 and the back portion 22 of the inner pants 2, or to the outer surfaces of the inner pants 2. The polyurethane coating can be achieved, for example, by hot-pressing a polyurethane film onto the fabric forming the front portion 21 and the back portion 22, or onto the outer surfaces of the inner pants 2.

[0072] The right leg opening 5R is attached to the lower right end of the front portion 21 and the back portion 22 (ie, the inner pants 2 ), and is C-shaped when viewed from below, with a gap on the right side.

[0073] A right side portion 25R is provided between the right ends of the front portion 21 and the back portion 22, i.e., at the right end of the inner pants 2. The right side portion 25R is provided in a C-shaped gap between the front portion 21 and the back portion 22 to enter the right leg opening 5R.

[0074] An opening is formed at the lower end of the right side portion of the inner pant 2, through the right leg opening 5R (partially through the right side portion 25R). The wearer's right leg (specifically, the right thigh) is inserted through the opening formed by the right leg opening 5R. The lower end opening of the right side portion of the inner pant 2, formed by the right leg opening 5R, communicates with the right leg opening 38R at the lower end of the right side portion of the outer pant 3. When the wearer's right leg is inserted into the lower end opening of the right side portion of the inner pant 2, it is also inserted into the right leg opening 38R at the lower end of the right side portion of the outer pant 3.

[0075] The left leg opening 5L is attached to the lower left end of the front portion 21 and the back portion 22 (ie, the inner pants 2 ), and is C-shaped when viewed from below, with a gap on the left side.

[0076] A left side portion 25L is provided between the left end of the front portion 21 and the left end of the back portion 22, i.e., at the left end of the inner pants 2. The left side portion 25L is provided in a C-shaped gap between the front portion 21 and the back portion 22 to enter the left leg opening 5L.

[0077] An opening is formed at the lower end of the left side of the inner pant 2, through the left leg opening 5L (partially through the left side portion 25L). The wearer's left leg (specifically, the left thigh) is inserted through the opening formed by the left leg opening 5L. The lower end opening of the left side of the inner pant 2, formed by the left leg opening 5L, communicates with the left leg opening 38L at the lower end of the left side of the outer pant 3. When the wearer's left leg is inserted into the lower end opening of the left side of the inner pant 2, it is also inserted into the left leg opening 38L at the lower end of the left side of the outer pant 3.

[0078] Figure 11 1 is a longitudinal sectional view showing the structure of the right leg opening 5R and the left leg opening 5L of the inner pants 2 of the underwear 1 in the embodiment.

[0079] The structure of the right trouser leg opening 5R and the left trouser leg opening 5L is to prevent the excretion, especially liquid excretion (such as urine, soft feces, etc.) excreted into the inner pants 2 from leaking to the outside of the inner pants 2 (extending to the underwear 1) when the wearer of the underwear 1 inadvertently (accidentally) urinates or defecates, or the odor of excretion from leaking to the outside of the inner pants 2 (extending to the underwear 1).

[0080] Specifically, the right trouser leg opening 5R and the right armpit area 25R, as well as the left trouser leg opening 5L and the left armpit area 25L, tightly surround the wearer's thigh (in other words, fit the thigh and are in full contact with moderate pressure), thereby serving as a mechanism to prevent excretion into the inner pants 2, especially liquid excretion, from leaking out or odor from leaking out of the inner pants 2 (i.e., underwear 1).

[0081] The right trouser leg opening 5R and the left trouser leg opening 5L each comprise a three-layer structure, specifically, from the inner side (i.e., the side that contacts the wearer's skin when the underwear 1 is worn) comprising a trouser leg water-absorbing layer 51, a moisture-absorbing and breathable layer 52, and a waterproof layer 53.

[0082] The trouser leg water-absorbing layer 51 is made of fabric with water-absorbing function or fabric treated in a way that has water-absorbing function. The trouser leg water-absorbing layer 51 can be made of 100% polyester fabric, for example.

[0083] The moisture-absorbing and breathable layer 52 is made of fabric with moisture-absorbing and breathable properties or a fabric processed in a manner with moisture-absorbing and breathable properties. The moisture-absorbing and breathable layer 52 can for example be made of a plain knit fabric composed of 75% to 85% polyester and 15% to 25% polyurethane.

[0084] The waterproof layer 53 is made of a layer having a waterproof function or a layer having a waterproof function and moisture permeability.

[0085] The waterproof layer 53 can be ensured to be waterproof by, for example, applying a polyurethane coating to the outer side of the moisture-absorbing, breathable layer 52, which serves as the inner trouser 2 (i.e., the side that contacts the inner side of the outer trouser 3). Alternatively, the waterproof layer 53 can be ensured to be waterproof by adhering a waterproof sheet or film to the outer side of the moisture-absorbing, breathable layer 52, which serves as the inner trouser 2. Alternatively, the waterproof layer 53 can be formed by, for example, hot-pressing a polyurethane film onto the outer side of the fabric forming the moisture-absorbing, breathable layer 52.

[0086] The lower edges (i.e., opening edges) of the right leg opening 5R and the left leg opening 5L are provided with a waterproof structure and a water-stopping structure (in other words, a waterproof structure and a water-stopping structure). The lower edges (i.e., opening edges) of the right leg opening 5R and the left leg opening 5L have a waterproof edge 54 as a waterproof structure and a water-stopping structure (see Figure 12 ).

[0087] In the waterproof edge 54, for example, a waterproof seam tape can be folded in half longitudinally and placed along the lower end (i.e., the end on the opening side) of each of the right and left leg openings R and L (specifically, the overlapping state of the leg water-absorbing layer 51, the moisture-absorbing and breathable layer 52, and the waterproof layer 53). The folded waterproof seam tape is then sewn together and secured to the lower end (opening end) of each of the right and left leg openings R and L.

[0088] The waterproof edge 54 can also be made of a strip of fabric (e.g., plain knit fabric) with at least one side treated with a waterproofing agent. For example, the waterproofing agent can be ensured by applying a polyurethane coating to at least one side of the strip of fabric. Furthermore, if the waterproof edge 54 is made of a strip of fabric that has been waterproofed on only one side, the fabric should be folded in half longitudinally with the waterproofing surface 54f facing inward. The fabric should then be wrapped around the lower ends (i.e., the open ends) of the right and left leg openings R and L (specifically, where the water-absorbing layer 51, the moisture-absorbing and breathable layer 52, and the waterproof layer 53 overlap). The folded strip of fabric should then be sewn together and secured to the lower ends (open ends) of the right and left leg openings R and L.

[0089] The waterproof edge 54 prevents moisture (specifically, urine, loose stools, and other liquid excrement) that penetrates along the right leg opening 5R and the left leg opening 5L from penetrating to the outside of the inner pants 2 (and, by extension, the underwear 1).

[0090] The right armpit 25R and the left armpit 25L can be made of elastic and stretchable fabric. The right armpit 25R and the left armpit 25L can be made of elastic and stretchable fabric composed of, for example, 75% to 85% polyester and 15% to 25% polyurethane.

[0091] The fabric used for the front portion 21 and the back portion 22 of the inner pants 2 (which are formed integrally from a single piece of fabric) may have (almost) no elasticity and stretchability or only slight elasticity and stretchability, while the fabric used for the right armpit portion 25R and the left armpit portion 25L, on the other hand, has greater elasticity and stretchability. With this design, even if the front portion 21 and the back portion 22 have less elasticity and stretchability, the right armpit portion 25R and the left armpit portion 25L can still provide sufficient elasticity and stretchability, thereby making it easier to put on and take off the underwear 1 while ensuring comfort when wearing the underwear 1.

[0092] Furthermore, the front portion 21 and the back portion 22 of the inner pants 2 (which are formed from a single piece of fabric) are waterproofed, while the right side portion 25R and the left side portion 25L do not need to be waterproofed. In this way, even if the breathability, elasticity, and elasticity of the front portion 21 and the back portion 22 are reduced due to the waterproofing, the breathability, elasticity, and elasticity of the right side portion 25R and the left side portion 25L are still maintained (i.e., the waterproofing does not reduce the breathability, elasticity, and elasticity), thereby ensuring the comfort of the underwear 1 when worn and making it easier to put on and take off the underwear 1.

[0093] Furthermore, even if the stretchability and elasticity of the right and left leg openings 5R and 5L are reduced due to the waterproof structure and water-stopping structure of the waterproof layer 53 and the waterproof edge 54, the stretchability and elasticity of the right and left sides 25R and 25L are still maintained (i.e., the waterproof layer or waterproof structure and water-stopping structure do not reduce the stretchability and elasticity). Therefore, the right leg opening 5R and the right side 25R, and the left leg opening 5L and the left side 25L can fit well around the wearer's thigh (in addition, the lower edges (i.e., the edges on the opening side) of the right and left sides 25R and 25L are not provided with waterproof edges). Therefore, liquid excrement discharged from the inner pants 2 does not leak outside the inner pants 2 (and the underwear 1 outside), and the odor of excrement does not leak outside the inner pants 2 (and the underwear 1 outside).

[0094] (Connection between inner pants and outer pants)

[0095] The inner pants 2 and the outer pants 3 are connected to each other. Specifically, the lower edge of the waist elastic band 35 is sewed together with the upper edge of the outer pants 3 and the upper edge of the inner pants 2.

[0096] That is, with the inner pants 2 placed inside the outer pants 3, the lower edge of the waist elastic band 35, the upper edges of the front crotch portion 31, the right front portion 32R, the left front portion 32L and the outer back portion 33 of the outer pants 3, and the upper edges of the front portion 21, the back portion 22, the right side portion 25R and the left side portion 25L of the inner pants 2 are overlapped in sequence from the outside and sewn together at the annular seam portion 39 (in addition, the right front portion 32R, the left front portion 32L and the outer back portion 33 are composed of a single piece of fabric).

[0097] Specifically, in the illustrated example, the inner pants 2 and outer pants 3 are sewn together only at their upper edges, that is, at the lower end of the waist elastic band 35. This allows the inner pants 2 to be pulled out of the outer pants 3 and spread out for airing and drying. However, for example, the right leg opening 5R and the left leg opening 5L of the inner pants 2 may be connected to any portion of the right front portion 32R, the left front portion 32L, or the outer back portion 33 of the outer pants 3.

[0098] (Inside the crotch of pants)

[0099] Figure 13 1 is a longitudinal sectional view showing the structure of the attachment portion of the crotch portion 6 of the inner pants 2 of the underwear 1 in this embodiment.

[0100] When the underwear 1 is worn, a crotch portion 6 is arranged (in other words, spans) from the front side (specifically, the lower abdomen, below the navel) to the back side (specifically, the buttocks, the coccyx, and the sacrum) of the wearer. The crotch portion 6 is attached to the inner side (i.e., the side that contacts the wearer's skin when the underwear 1 is worn) of the front portion 21 and the back portion 22 (which are made of a single piece of fabric).

[0101] The crotch portion 6 is designed to absorb excrement discharged into the inner pants 2 when the wearer of the underwear 1 accidentally urinates or defecates. Specifically, when the underwear 1 is worn, the crotch portion 6 is configured to cover the wearer's lower abdomen (specifically, the area below the navel) to the buttocks (specifically, the coccyx and sacrum), and in particular functions as a mechanism for absorbing liquid excrement (specifically, urine, soft stool, etc.).

[0102] Crotch portion 6 is made of two-layer structure. And the crotch portion 6 mounting portion of inside pants 2, adds inside pants 2 (specifically, front portion 21 and back portion 22 and guarantee waterproof layer) and outside pants 3, forms five-layer structure together.

[0103] Specifically, the crotch portion 6 is composed of a two-layer structure of a water absorption and diffusion layer 61 and a water absorption layer 62 in sequence from the inner side (i.e., the side that contacts the wearer's skin when the underwear 1 is worn and faces the wearer's skin).

[0104] Here, the front portion 21 and the back portion 22 of the inner pants 2 (which are integrally formed from a single piece of fabric) can be made of, for example, cotton stretch fabric, and polyurethane is coated on the outer side of the fabric to form a waterproof layer.

[0105] Therefore, the crotch 6 mounting portion is composed of the water absorption diffusion layer 61 and the water absorption layer 62 of the crotch 6, the fabric of the front part 21 and the back part 22 of the inner pants 2 (which are composed of a piece of fabric as a whole), and the fabric of the inner pants 2. Figure 13The five-layer structure consists of the outer pants 3 (specifically, the front crotch 31, etc.) and the polyurethane coating (numbered 20a in the figure) as a waterproof layer (numbered 20b in the figure), and the outer pants 3.

[0106] The water absorption and diffusion layer 61 is made of a cloth having water absorption and diffusion properties (in other words, quick-drying properties) or a cloth processed to have water absorption and diffusion properties. For example, the water absorption and diffusion layer 61 can be formed of a 100% cotton knitted cloth.

[0107] Water-absorbing layer 62 is formed from a water-absorbing fabric or sheet material, or a fabric or sheet material processed to be water-absorbing. For example, a 100% rayon felt absorbent sheet (particularly water-absorbing) can be used to form water-absorbing layer 62. The thickness of water-absorbing layer 62 (e.g., felt) is not limited to a specific value; for example, it can be set to between 2 mm and 4 mm, and approximately 3 mm.

[0108] The crotch portion 6 is provided with a waterproof structure and a water-stopping structure across the entire periphery (in other words, it has a waterproof and water-stopping structure). Specifically, as a waterproof structure and a water-stopping structure, the crotch portion 6 has a waterproof seam portion 64 around its periphery (see Figure 14 ).

[0109] In the illustrated example, of the waterproof seams 64 of the crotch portion 6 on the rear portion 22 side of the inner pants 2, the waterproof seams on the right side 25R (portion 64a) and the waterproof seams on the left side 25L (portion 64b) extend to the waist elastic band 35. However, these waterproof seams (portions 64a and 64b) do not necessarily extend to the waist elastic band 35.

[0110] In the waterproof seam portion 64, for example, a waterproof tape may be provided in a folded state along its length so as to wrap around the end of the crotch portion 6 (specifically, the overlapping state of the water absorption and diffusion layer 61 and the water absorption layer 62). The folded waterproof tape is then sewn together with the end of the crotch portion 6.

[0111] The waterproof seam section 64 may also be made of a strip of fabric (e.g., ribbed fabric) that has been waterproofed on at least one side. For example, polyurethane may be coated on at least one side of the strip to ensure waterproofing. Furthermore, if a strip of fabric that has been waterproofed on only one side is used as the waterproof seam section 64, the waterproof surface 64f should face inward and be folded in half along the long side of the strip. This will allow the strip to be attached to and frame the end of the crotch section 6 (specifically, the overlapping state of the water-absorbing diffusion layer 61 and the water-absorbing layer 62). The folded strip of fabric is then sewn together with the end of the crotch section 6.

[0112] In the example shown in the figure, at the connection portion (referred to as "right leg connection portion 23R") between the front portion 21 and the back portion 22 (which are formed entirely of a single piece of fabric) and the right leg opening 5R, the end portion of the crotch portion 6 (specifically, the overlapped state of the water-absorbing and diffusing layer 61 and the water-absorbing layer 62), the end portion of the front portion 21 and the back portion 22 (specifically, the fabric 20a and the waterproof layer 20b) corresponding to the right leg connection portion 23R, and the end portion of the right leg opening 5R (specifically, the overlapped state of the water-absorbing and diffusing layer 61, the moisture-absorbing and breathable layer 52, and the waterproof layer 53) corresponding to the right leg connection portion 23R are sewn together by means of a portion (referred to as "portion 64c") of the waterproof sewing portion 64 near the right leg connection portion 23R (see FIG. 1 ). Figure 15 ).

[0113] In the example shown in the figure, at the connection portion (referred to as "left leg connection portion 23L") between the front portion 21 and the back portion 22 (which are formed entirely of a single piece of fabric) and the left leg opening 5L, the end portion of the crotch portion 6 (specifically, the overlapped state of the water-absorbing and diffusing layer 61 and the water-absorbing layer 62), the end portion of the front portion 21 and the back portion 22 (specifically, the fabric 20a and the waterproof layer 20b) corresponding to the left leg connection portion 23L, and the end portion of the left leg opening 5L (specifically, the overlapped state of the water-absorbing and diffusing layer 61, the moisture-absorbing and breathable layer 52, and the waterproof layer 53) corresponding to the left leg connection portion 23L are sewn together by means of a portion (referred to as "portion 64d") of the waterproof sewn portion 64 near the left leg connection portion 23L (see FIG. 1 ). Figure 15 ).

[0114] By providing a waterproof seam portion 64, moisture (specifically, liquid excretions such as urine and soft stool) absorbed by the crotch portion 6 (especially the absorbent layer 62) is prevented from penetrating to the outside of the crotch portion 6, and further prevented from penetrating to the outside of the inner pants 2 (and further to the outside of the underwear 1).

[0115] Part of the waterproof seam 64 of the crotch portion 6 is sewn to the inner side (i.e., the side that contacts the wearer's skin when the underwear 1 is worn) of the front portion 21 and the back portion 22 of the inner pants 2 (which are made of a single piece of fabric) (specifically by herringbone seams (zigzag stitches); reference numeral 65 in the illustrated example).

[0116] (Effect)

[0117] According to the underwear 1 in the embodiment, since the crotch portion 6 installed on the inner side of the inner pants 2 has an all-round waterproof structure, it can prevent urine or feces from leaking to the outside and can block odor leakage, so that odor will not leak to the outside of the underwear when urinating or defecating accidentally.

[0118] In addition, according to the underwear 1 in the embodiment, the right leg opening 5R installed at the lower right end of the inner pants 2 and the left leg opening 5L installed at the lower left end fit tightly around the wearer's thighs, thereby better preventing urine or feces from leaking to the outside and blocking odor leakage, so that odor will not leak to the outside of the underwear in case of accidental urination or defecation.

[0119] Although the embodiments of the present invention have been described in detail above, the specific embodiments of the present invention are not limited to the above embodiments, and various variations and modifications within the scope not departing from the gist of the present invention are also included in the present invention.

[0120] Explanation of symbols

[0121] 1 underwear

[0122] 2 inner pants

[0123] 21 front of body

[0124] 22 rear part

[0125] 23R Right trouser leg connection

[0126] 23L Left leg connection

[0127] 25R right side

[0128] 25L left side

[0129] 3 outer pants

[0130] 31 front crotch

[0131] 32R right front

[0132] 32L Left front

[0133] 33 External rear part

[0134] 34 crotch

[0135] 35 elastic waist

[0136] 36R right suture

[0137] 36L Left side seam

[0138] 37F front suture

[0139] 37B rear suture

[0140] 38R right trouser leg

[0141] 38L left leg opening

[0142] 39 Annular suture

[0143] 5R Right trouser leg opening

[0144] 5L left leg opening

[0145] 51 Trouser leg absorbent layer

[0146] 52 moisture-absorbing and breathable layer

[0147] 53 waterproof layer

[0148] 54 waterproof edges

[0149] 6 Crotch

[0150] 61 water absorption and diffusion layer

[0151] 62 water absorption layer

[0152] 64 waterproof seams

[0153] 64a The portion of the waterproof seam located on the rear right side

[0154] 64b The portion of the waterproof seam located on the left side of the rear side

[0155] 64c waterproof seam near the right trouser leg connection

[0156] 64d waterproof seam near the left leg connection

[0157] 65 herringbone suture

Claims

1. A pair of underwear, characterized in that: It comprises outer pants and inner pants arranged on the inner side of the outer pants. The inner side of the inner pants is provided with a crotch portion having a water-absorbing layer. The entire periphery of the crotch portion is provided with a waterproof structure.

2. The underwear according to claim 1, wherein The outer pants and the inner pants are connected to each other only at their upper edges by sewing the upper edges of the outer pants, the upper edges of the inner pants, and the lower edges of the waist elastic band together.

3. The underwear according to claim 1, wherein: The inner pants have a front part and a back part. Side parts are provided between the front part and the back part on the left and right sides of the inner pants. The outer sides of the front part and the back part have waterproof function. The side portions are formed of stretchable fabric.

4. The underwear according to claim 1, wherein: The lower right end and the lower left end of the inner pants are respectively provided with trouser leg openings. The side edges of the openings of the trouser legs have a waterproof structure.

5. The underwear according to claim 1, wherein: The lower right end and the lower left end of the inner pants are respectively provided with trouser leg openings. The leg openings fit tightly around the wearer's thighs. The outer side surface of the trouser leg opening has a waterproof function.

6. The underwear according to claim 1, wherein: The outer pants have a deodorizing function.

7. The underpants according to claim 1, wherein: The inner pants have a front part and a back part. The front part and the back part are integrally formed by a whole piece of cloth.

8. The underpants according to claim 1, wherein: The inner pants and the outer pants are not provided with an opening for urination.

9. The underpants according to claim 1, wherein: The waterproof structure of the crotch portion is constructed as follows: a strip-shaped fabric is used which is waterproofed on at least one side, the fabric is folded in half along the long side of the strip so that the waterproof side is located on the inner side, and the fabric in this state is attached and sewn in a manner that clamps and frames the end portions of the crotch portion.

10. The underpants according to claim 1, wherein: The inner pants have a front part and a back part. The lower right end and the lower left end of the front part and the back part are respectively provided with trouser leg openings. The portion near the connection between the front part and the back part and the trouser leg opening in the waterproof structure of the crotch is constructed as follows: a strip-shaped fabric is used which is waterproofed on at least one side, the fabric is folded in half along the long side of the strip so that the waterproof side is located on the inside, and the fabric in this state is attached and sewn in a manner that clamps and frames the end portions of the crotch, the end portions of the front part and the back part, and the end portions of the trouser leg opening.

11. The underpants according to claim 4, wherein: The waterproof structure of the trouser leg opening is constructed by using a strip of fabric that has been waterproofed on at least one side, folding the fabric in half along the longitudinal direction of the strip so that the waterproofed side is located inside, and attaching and sewing the fabric in this state so as to sandwich and frame the end portion of the opening side of the trouser leg opening.

Images