WO2003075691A1

WO2003075691A1 - Separated leg part underpants

Info

Publication number: WO2003075691A1
Application number: PCT/JP2003/002621
Authority: WO
Inventors: Shiro Ogata
Original assignee: Shiro Ogata
Priority date: 2002-03-12
Filing date: 2003-03-06
Publication date: 2003-09-18
Also published as: AU2003221321A1; JP3817187B2; JP2003268601A

Abstract

An underpants comprising a waist part (1) and a thigh part (2), wherein the thigh part (2) is separated into a front thigh part (2a) and a rear thigh part (2b) and provided with a connectable separating part (8). Assuming the overall length from the upper front end to the upper rear end of the waist part (1) through the thigh part (2) is L, the separating part (8) is provided at such a position as the overall length Pf at a part (13) corresponding to the front thigh part from the upper front end to the forward end at the separating part of the front thigh part (2a) is not longer than 2/5L and a part (14) corresponding to the rear thigh part from the upper rear end to the forward end at the separating part of the rear thigh part (2b) is formed to be stretchable such that the overall length Pb of that part (14) can shrink to not longer than 1/2L when the thigh part (2) is separated at the separating part (8). A person can urinate readily by simply separating the thigh part and the separated front and rear thigh parts can be prevented from being contaminated with water of a toilet stool, or the like.

Description

Inseam-separated underarm technical field

The present invention relates to an underseam, that is, a pants for men and children or a panty for women, wherein the inseam can be separated and connected.

Background art

The conventional general underpants include a ring-shaped waist around the waist, and a crotch connecting the front and rear sides of the waist, and a crotch on the left and right sides of the crotch. It has a shape having a leg hole formed between the crotch part and the waist part.

In this type of lowering, it is necessary to put the leg through the leg or through the hole when removing it from the body, or pull out the leg from the hole or the hole, and it is troublesome to attach and remove In order to improve this point, it has been proposed that the crotch can be separated and connected at an intermediate position as described in, for example, Japanese Unexamined Patent Publication No. 62-41003. .

By the way, when adding a stool or urine in a toilet, the lowering is performed in the case of the conventional general lowering, but in the case of the lowering of the inseam type as described above, the lowering is performed. It is possible to perform rehabilitation simply by separating the inseam, and if the rehabilitation can be performed in such a form, especially for the elderly or sick or those who have difficulty lowering their lowering. Is very convenient.

However, in the case of the conventional lower crotch type, when the crotch is separated and the user sits down on the toilet, the separated front crotch and the rear crotch hang down around the body, and the front crotch or the back. The tip of the side crotch may come into contact with water in the toilet bowl, or urine or stool may adhere to the front crotch or the rear crotch. There were many problems in performing additions simply by separating the parts.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention provides a simple refill by simply separating the inseam. It is another object of the present invention to provide a crotch-separated type lower arm which does not have a risk of soiling the separated front and rear crotch portions. Disclosure of the invention

In order to achieve the above object, a first crotch-separated underpants according to the present invention has a waist portion and a crotch part, and the crotch part includes a front crotch part and a rear side. A lower leg provided with a separating portion that can be separated and connected to the crotch portion, the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion; Is L, the separating section is provided at a position where the total length P f of the front crotch corresponding section from the front upper end to the front end of the separating section of the front crotch is 2/5 L or less, and A rear crotch corresponding portion from an end to a tip of the separation portion of the rear crotch is extendable and contractable, and when the crotch is separated by the separation portion, the total length P of the rear crotch corresponding portion It is characterized in that it is formed so as to be contractable until b becomes 1/2 L or less. In order to achieve the above object, a second crotch-separable underpants according to the present invention have a waist portion and a crotch part, and the crotch part includes a front crotch part and a rear part. A lower leg provided with a separating portion which can be separated from and connected to the crotch portion, the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion; Where L is a dog, the total length P f of the front inseam corresponding portion from the front upper end to the front end of the front crotch separation portion is more than 2/5 L, and The rear crotch corresponding portion is provided at a position where the total length Pb of the rear crotch corresponding portion to the distal end of the rear crotch portion is larger than 1 Z 2 L, and the front crotch corresponding portion is extendable and contractable, and When the crotch part is separated by the separation part, the crotch part is formed so as to be contractable until its total length P f becomes 2 Z 5 L or less, and The rear crotch corresponding portion is formed to be extendable and contractable, and to be contractable until the total length Pb becomes 1/2 L or less when the crotch is separated by the separation portion. It is characterized by the following.

In order to achieve the above object, a third crotch-separated underpants according to the present invention has a waist portion and a crotch part, and the crotch part includes a front crotch part and a rear part. A lower leg provided with a separating portion that can be separated and connected to the crotch portion, the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion; To L The separation portion is provided at a position where the total length Pb of the rear inseam corresponding portion from the rear upper end to the front end of the rear crotch separation portion is equal to or less than 1/2 L, and the front upper portion is provided. The front crotch corresponding portion from the end to the tip of the separation portion of the front crotch is extendable, and when the crotch is separated by the separation portion, the total length P f of the front crotch corresponding portion is 2 It is characterized in that it is formed so as to be able to contract until it becomes less than / 5 L. The above-mentioned “total length L from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion” means the crotch portion from the front upper end of the waist portion with the separating portion connected. The vertical direction extends from the front upper end of the waistline to the rear upper end of the waistline through the crotch, that is, the direction in which the waist extends. (In the direction perpendicular to the horizontal direction).

In addition, the total length Pf of the front crotch corresponding portion and the total length Pb of the rear crotch corresponding portion used in defining the position of the separating portion described above are also different from the actual length in the vertical direction if each does not expand or contract. When the total length is expanded or contracted, it means the substantial maximum length in the vertical direction when it is stretched in the vertical direction.

Also, the above-mentioned “when the above-mentioned crotch is separated by the above-mentioned separation part” means that the underwear of the present invention is attached to the body and the above-mentioned front crotch corresponding part and Z or the rear crotch corresponding part are stretched. This means that the crotch portion is separated by the separating portion from the state in which the crotch portion is in the closed position.

The term “expandable” with respect to the front crotch corresponding portion and the rear crotch corresponding portion described above means that it is at least vertically expandable and contractable.

The inventor of the present invention has proposed a crotch-separated type underpatch that can be easily attached and detached. As a result of various studies from that point of view, it was found that with a conventional mere crotch-separated underpants, when sitting down on a Western-style or Japanese-style It has been found that the front crotch or the rear crotch may come in contact with water in the toilet bowl, or that urine or stool may adhere and become dirty. The present invention was made as a result of intensive studies on such a separate crotch underpants so that they can be easily and comfortably added. As described above, the crotch-separated underpants according to the present invention are provided with a separation part that separates the crotch into a front crotch part and a back crotch part and is connectable. When the total length from the front upper end of the part to the rear upper end of the waist part through the crotch is L, in the first lower arm, the front side from the front upper end to the front end of the front crotch separation part If the separation part is provided at a position where the total length P f of the crotch part is 2/5 L or less, the crotch corresponding part from the upper end on the rear side to the tip of the separation part at the back crotch should be When the part is separated by the separation part, it is formed to be contractible until the total length Pb of the rear inseam corresponding part is less than 1/2 L or less,

In the second lower leg, the total length P f of the front crotch corresponding portion from the front upper end to the front end of the separation portion of the front crotch is greater than 2/5 L, and the rear crotch from the rear upper end to the back crotch If the separation part is provided at a position where the total length Pb of the rear inseam corresponding part to the tip of the separation part is larger than 1/2 L, the front crotch corresponding part and the crotch part are separated by the separation part. At the same time, it is formed to be contractible until its full length P f becomes 2/5 L or less, and the full length P b becomes 1/2 L or less when the crotch is separated by the separation part. Until it becomes shrinkable,

In the third lower leg, a separating portion is provided at a position where the total length Pb of the rear inseam corresponding portion from the upper end of the rear side to the distal end of the separating portion of the rear crotch is 1/2 L or less. In this case, when the front inseam corresponding portion from the front upper end to the front end of the front crotch separating portion is separated by the separating portion, the total length P f of the front inseam corresponding portion becomes 2 Z 5 L or less. As it was formed to be shrinkable up to

In any of the underarms, when the crotch is detached while being worn on the body, the front crotch-corresponding portion is less than 2 / 5L and the rear crotch-corresponding portion is less than 1 / 2L. If you sit on the toilet with such a length, there is no risk that both the front and rear crotch will come in contact with water in the toilet, and there is also a risk that urine or stool may adhere to the front crotch or the rear crotch. It is very easy and comfortable to add to the crotch by simply separating the crotch at the separation section without lowering the lower leg, and without soiling the lower leg. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a developed view showing a stretched state of the first embodiment of the underpants according to the present invention, FIG. 2 is a front view showing the extended connection state of the lower part shown in FIG. 1, and FIG. 3 is a side view showing the extended part connection state of the lower part shown in FIG.

FIG. 4 is a developed view showing a state in which a rear crotch corresponding portion of the underpants shown in FIG. 1 is contracted. FIG. 5 is a developed view showing an extended state of the second embodiment of the underpants according to the present invention. FIG. 6 is a developed view showing a state in which the front and rear inseam corresponding portions of the underpants shown in FIG. 5 are contracted.

FIG. 5 is a developed view showing a third embodiment of the underpants according to the present invention in an extended state, and FIG. 8 is a developed view showing a state in which the front crotch corresponding portion of the underpants shown in FIG. 7 is contracted. Ο Best mode for carrying out the invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an expanded view showing a stretched state of the first embodiment of the crotch-separated lower leg according to the present invention, FIG. 2 is a front view showing a stretched state of the lower leg shown in FIG. FIG. 3 is a side view showing the extended state of the connecting portion of the lower leg shown in FIG. 1, and FIG.

As shown in FIG. 1, the underpants of the present embodiment are panties for women, and a waist portion extending in the lateral direction which is positioned around the waist when worn on the body (in a frame A indicated by a chain line). 1) and a longitudinal direction including a portion which is connected from the front portion 1a of the waist portion 1 to the rear portion lb of the waist portion 1 and is positioned at the crotch when worn on the body (see above). Crotch (extending in the direction perpendicular to the lateral direction) (parts located in the dashed-dotted frames B and C, excluding the waistline 1) 2. The waist portion 1 and the crotch portion 2 are basically made of a non-stretchable or slightly stretchable fabric.

The waist portion 1 is provided with a separating portion 3 that can be separated and connected to a portion (a portion where the crotch portion 2 is not connected) located on the side of the waist when worn on the body. The separating portion 3 includes two cutting ends 4 and 5 formed by cutting the waist portion 1 along a vertical cutting line, and the two cutting ends 4 provided on the two cutting ends 4 and 5. And 5 are hook-and-loop fasteners 6 and 7, which are connection means that can be connected separately. One hook-and-loop fastener 6 is cut The other side fastener 7 is provided on the back side in FIG. 1 of the end portion 4 and on the front side in FIG. 1 of the cut end portion 5. As the connecting means 6 and 7 that can be separated and connected, various things such as buttons and button holes, hooks and hook receivers can be used in addition to hook-and-loop fasteners such as Percro (registered trademark).

The crotch part 2 is also formed with a separation part 8 that can be separated and connected to a part thereof. The separating portion 8 is formed at a predetermined position of the crotch portion 2 and connects the crotch portion 2 to the front crotch portion (a portion of the portion located in the dashed line frame B except the waist portion 1) 2a. Rear crotch (the part located inside the dashed-dotted line frame C except the waist 1) 2b, which is cut off along the crotch 2 along the horizontal cutting line The two cut ends 9, 10 formed and the surface fasteners 11, 1, which are connection means capable of separating and connecting the two cut ends 9, 10 provided on the both cut ends 9, 10, 10, respectively. It consists of 1 and 2. One surface fastener 11 is provided on the back side of the cut end 9 in FIG. 1, and the other surface fastener 12 is provided on the cut end 10 on the front side in FIG. As the connection means 11 and 12 that can be separated and connected, in addition to hook-and-loop fasteners such as Berg mouth (registered trademark), various types such as buttons and button holes, hooks and hook receivers can be used.

The portion from the front upper end of the waist part 1 to the rear upper end of the waist part 1 through the crotch part 2 is the tip of the separation part of the front crotch part 2a from the front upper end of the waist part 1. (The part located in the frame B of the dashed-dotted line in Fig. 1) up to the front crotch (the end of the cut end 9) 13 and the waistline 1 from the rear upper end to the rear crotch The rear crotch-corresponding portion (the portion located in the dashed-dotted line frame C in FIG. 1) 14 which is the portion up to the tip of the separation portion (the tip of the cut end portion 10) of 2b, and this embodiment As will be described later, the rear inseam corresponding portion 14 is formed so as to be able to expand and contract in the vertical direction, and the front inseam 2a and the rear inseam 2b are connected by the separating portion 8 and the rear inseam The total length from the front upper end of the waist portion 1 to the rear upper end of the waist portion 1 through the crotch portion 2 in a state where the corresponding portion 14 is substantially extended in the vertical direction (vertical direction). When the total length) is L (= L f + L b), the separating portion 8 has a total length P f of the front crotch corresponding portion 13 in the vertical direction (hereinafter, simply referred to as a total length P f) of 2/5 L. It is formed at the position below.

In addition, as shown in FIG. 1, the above L f is from the front upper end of the waistline portion 1 in the front crotch corresponding portion 13 to the center of the separating portion 3 (the center of the hook-and-loop fastener 11 as a connecting means). Lb is the length from the rear upper end of the waist portion 1 in the rear inseam corresponding portion 14 to the center of the separating portion 3 (the center of the hook-and-loop fastener 12 serving as a connecting means). I mean.

Then, as shown in FIG. 1, three elastic elastically stretchable rubber pieces 15 are sewn to the fabric of the rear inseam corresponding portions 14 in a substantially maximum stretched state, as shown in FIG. As a result, the rear crotch corresponding portion 14 is formed so as to be able to expand and contract in the vertical direction, and particularly, in the free state, the total length Pb of the rear crotch corresponding portion 14 in the vertical direction (hereinafter simply referred to as “b”). The overall length Pb) is formed so that the rubber 15 shrinks to less than 1/2 L. Accordingly, when the lower leg of the present embodiment is not worn on the body, the rear inseam corresponding portion 14 contracts in the vertical direction, as shown in FIG.

When the lower gown of the present embodiment is worn on the body, first, the rear crotch corresponding portion 14 is applied to the buttocks in the unfolded state shown in FIG. 4, and then both cut ends 4 and 5 of the waist portion are placed on the lower back. It is turned around the waist toward the front of the body as shown by the arrows D and E in the figure, and the hook-and-loop fasteners 6 and 7 are brought into contact at the sides of the waist and connected. In this state, the front crotch corresponding portion 13 is located on the front side of the body, so the rear crotch corresponding portion 14 located behind the buttocks is turned forward through the crotch portion in the direction of arrow F, and Pull the side inseam corresponding portion 14 to stretch it by extending the rubber 15, connect the hook-and-loop fasteners 11, 12 by contacting them, and attach them to the body as shown in FIGS.

When adding to the body from the state shown in Figs. 2 and 3, the hook-and-loop fasteners 11 and 12 are separated to separate the crotch part 2 at the separation part 8, and in this state the toilet All you have to do is sit down and add something. At this time, of the separated inseam 2, the front inseam 2 a is originally filled with water in the toilet when adding, since the total length P f of the front inseam corresponding portion 13 is originally shorter than 2/5 L as described above. There is no danger of touching or sticking of urine, and when the rear inseam corresponding portion 14 is separated by the separating portion 8, the stretching force disappears and becomes free, and the total length Pb is reduced by the rubber 15 Since it shrinks to less than 1/2 L, there is no danger of touching the water in the toilet or sticking the stool for too long, making it possible to add comfortably.

Next, a second embodiment of the present invention will be described. FIG. 5 is a developed view showing a stretched state of the second embodiment of the crotch-separated lower leg according to the present invention, and FIG. 6 is a front crotch corresponding portion. FIG. 26B is a developed view showing a state in which the 2621 and the rear inseam corresponding part are contracted. In this embodiment, the basic configuration is the same as that of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

The second embodiment is different from the first embodiment in that the position of the separating portion 8 for separating the crotch portion 2 is different and the front crotch corresponding portion 13 is also contracted. . That is, in the second embodiment, both the front crotch corresponding portion 13 and the rear crotch corresponding portion 14 are formed so as to be able to expand and contract in the vertical direction. And the crotch 2b from the front upper end of the waistline 1 when the front crotch corresponding portion 13 and the rear crotch corresponding portion 14 are both substantially extended to the maximum. When the total length (length in the vertical direction) of the waist portion 1 to the rear upper end is defined as L (= L f + L b), the separating portion 8 has a total length P f of the front crotch corresponding portion 13. The dog is larger than 2Z5L, and the full length Pb of the rear inseam corresponding portion 14 is formed at a position where the dog is smaller than 1Z2L.

As shown in the figure, three elastically elastic rubbers 16 are sewn to the front inseam corresponding portion 13 in the longitudinal direction in the front inseam corresponding portion 13 in a substantially maximum stretched state. As a result, the front crotch corresponding portion 13 is formed so as to be able to expand and contract in the vertical direction, and the total length P f of the front crotch corresponding portion 13 becomes 2/5 when the rubber 16 contracts, particularly in a free state. L, and at the rear inseam corresponding portion 14, three elastically extendable rubbers 15 in the vertical direction as shown in the drawing are provided at the rear inseam corresponding portion in a substantially extended state. 14 and is sewn on the material of the rear crotch corresponding portion 14 so as to be able to expand and contract in the vertical direction, especially in the free state. Is formed such that the rubber 15 shrinks to 1/2 L or less.

In the case of the lower leg of the present embodiment, it can be worn on the body in the same manner as in the case of the first embodiment (however, in the case of the present embodiment, the front and rear inseam portions 13, Since both 14 are formed to be extensible, pull either one or both of the inseam corresponding parts 13 and 14 and connect them with the separating part 8). When adding, the hook-and-loop fasteners 11 and 12 are separated, the crotch part 2 is separated by the separation part 8, and in this state, it is sufficient to sit down on the toilet bowl and add the stuff. in this case, The front inseam corresponding portion 13 is separated by the separating portion 8 so that the stretching force disappears and becomes free, and the rubber 16 contracts until the total length Pf becomes 2/5 L or less. There is no danger of touching the water in the toilet or sticking urine, etc., because the length is too long, and the rear crotch support section 14 is also separated by the separation section 8 so that the stretching force is lost. And the rubber 15 contracts until the total length Pb becomes 1/2 L or less.Therefore, there is no danger that water in the toilet bowl or stool may adhere due to too long and comfortable. You can do extra work.

Next, a third embodiment of the present invention will be described. FIG. 6 'is a developed view showing a stretched state of the third embodiment of the crotch-separated lower leg according to the present invention, and FIG. 7 is a developed view showing a state where the front crotch corresponding portion is contracted. This embodiment also has the same basic configuration as that of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

In the third embodiment, the position of the separating portion 8 for separating the crotch portion 2 is different from that of the first embodiment, and the front crotch corresponding portion 13 instead of the rear crotch corresponding portion 14 contracts. It is different in that it is configured as follows. That is, in the third embodiment, the front crotch corresponding portion 13 is formed to be extendable and contractable, and the separation portion 8 connects the front crotch portion 2a and the rear crotch portion 2b and When the front inseam corresponding portion 13 is substantially fully extended, the total length (vertical length) from the front upper end of the waistline to the rear upper end of the waistline through the crotch is L (two Lf + L b), the separation part 8 is formed at a position where the total length P b of the rear inseam corresponding part 14 in the vertical direction is 1/2 L or less.o

As shown in the figure, three elastically elastic rubbers 16 are sewn to the front inseam corresponding portion 13 in the longitudinal direction in the front inseam corresponding portion 13 in a substantially maximum stretched state. As a result, the front crotch corresponding portion 13 is formed so as to be able to expand and contract in the vertical direction, and particularly, in the free state, the rubber 16 is shrunk to the total length P f of the front crotch corresponding portion 13 in the vertical direction. It is formed to be 2 / 5L or less.

In the case of the lower leg of this embodiment, it can be worn on the body in the same manner as in the case of the first embodiment. (However, in the case of the present embodiment, the front crotch corresponding portion 13 can be expanded and contracted. As it is formed, pull through the crotch while pulling To the side and connect it at the separation part 8), and when adding to the body while wearing it, separate the hook-and-loop fasteners 11 and 12 to separate the crotch part 2 at the separation part 8. However, in this state, it is sufficient to sit down on the toilet and add the necessary items. In this case, the rear inseam 2b of the separated inseam 2 is originally filled with water in the toilet bowl when adding, since the total length of the rear inseam corresponding portion 14 is originally shorter than 1/2 L as described above. There is no danger of touching or sticking of stool, and the front crotch corresponding portion 13 is separated by the separating portion 8 so that the stretching force disappears and becomes free. Since it shrinks until f becomes less than 2/5 L, it is too long and there is no danger of touching the water in the toilet or sticking urine, and it is possible to comfortably perform refilling.

In each of the above-described embodiments, the front crotch corresponding portion 13 and the rear crotch corresponding portion 14 are made of a material that does not have elasticity or has little if any. The actual maximum length of L, Lf, and Lb when stretched in the vertical direction is different from that above, on the front side of the waist portion 1 with the connection portion 8 connected. The free length of the fabric from the end through the crotch to the rear upper end of the waist, the front free length of the fabric forming the crotch-compatible portion 13, and the back It is equal to the length in the free direction of the fabric forming the side inseam corresponding portion 14.

Further, in each of the above embodiments, as a means for imparting elasticity to the front crotch corresponding portion 13 and the rear crotch corresponding portion .14, the fabric of the front crotch corresponding portion 13 and the rear crotch corresponding portion 14 is used. The elastic rubbers 15 and 16 are sewn vertically in the center of the, but these elastic rubbers 15 and 16 can shrink the front crotch corresponding part 13 or the rear crotch corresponding part 14 As long as it adheres to the cloth, various methods such as adhesion with a bonding agent can be adopted. It is not always necessary to attach the elastic rubber to the center part. For example, as shown by a two-dot chain line in FIGS. Elastic rubbers 17 and 18 are attached to the side edge of the side crotch corresponding portion 14 (the portion corresponding to the periphery of the leg 揷 through hole) by sewing or the like, so that the front crotch corresponding portion 13 or the rear crotch corresponding portion 14 is attached. May contract so that their total lengths P f and P b become shorter.

Further, as a method of imparting elasticity, any method other than a method of attaching an elastic material such as rubber may be employed. For example, the front crotch corresponding portion 13 or 3/02621 When the fabric of the rear inseam corresponding part 14 is separated by the separating part 8 by using a material with sufficient elasticity, P f and P b are 2/5 L or less, respectively. , 1/2 L or less.

Further, in the first embodiment described above, not only the rear inseam corresponding portion 14 but also the front inseam corresponding portion 13 may be formed so as to be contracted and further shortened when separated by the separating portion 8. In the third embodiment described above, not only the front crotch corresponding portion 13 but also the rear crotch corresponding portion 14 may be formed so as to be contracted and further shortened when separated by the separation portion 8.

Further, in each of the above embodiments, the separation part 3 is also formed on the waist part 1, but the separation part 3 of the waist part 1 is not always necessary, and may be provided as necessary.

The underpants of the present invention may be not only the above-mentioned women's panties, but also men's panties or children's panties, or swimsuit pants or the like.

Claims

The scope of the claims

(1) An underpants having a waist portion and a crotch portion, wherein the crotch portion is provided with a separation portion capable of separating the crotch portion into a front crotch portion and a rear crotch portion and being connectable. When the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion is L, the separating portion separates the front crotch portion from the front upper end. Provided at a position where the total length P f of the front inseam corresponding portion to the front end is 2/5 L or less, and the rear inseam corresponding portion from the upper end of the rear side to the front end of the separation portion of the rear crotch can expand and contract And when the crotch part is separated by the separation part, is formed so as to be contractible until the total length Pb of the rear crotch corresponding part becomes 1/2 L or less. Separate crotch underpants.

(2) The rear crotch-corresponding portion is made to be stretchable by attaching an elastically stretchable elastic material to the central portion of the rear crotch-corresponding portion in the vertical direction with substantially maximum extension. The crotch-separated underpatch according to claim 1, characterized in that:

(3) The rear inseam corresponding portion is characterized in that it can be expanded and contracted by attaching an elastic material that can be elastically stretched to the side edge of the rear inseam corresponding portion in a substantially maximum stretched state. The underseam-separated underpatch according to claim 1.

(4) An underpatch having a waist portion and a crotch portion, wherein the crotch portion is provided with a separation portion capable of separating the crotch portion into a front crotch portion and a rear crotch portion and being connectable. When the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion is L, the separating portion separates the front crotch portion from the front upper end. The total length P f of the front inseam corresponding part up to the front end of the dog is more than 2/5 L, and the total length P b of the rear inseam corresponding part from the rear upper end to the separation front end of the rear crotch is It is provided at a position larger than 1/2 L,

The front crotch corresponding portion is extendable and contractible, and is formed so as to be contractable until the total length P f becomes 2/5 L or less when the crotch is separated by the separation portion,

The rear crotch corresponding portion is formed so as to be extendable and contractable, and to be contractable until the total length Pb becomes 1/2 L or less when the crotch portion is separated by the separation portion. Separate crotch-type underarm.

(5) The front crotch-corresponding portion or the rear crotch-corresponding portion vertically adheres an elastic material which can be elastically stretched to the center of the fabric of the front crotch-corresponding portion or the rear crotch-corresponding portion in a substantially stretched state. 5. The crotch-separated underpatch according to claim 4, wherein the underpants can be extended and contracted.

(6) The front crotch corresponding portion or the rear crotch corresponding portion expands and contracts by attaching an elastic material that can be elastically stretched to the side edge of the fabric of the front crotch corresponding portion or the rear crotch corresponding to approximately the maximum stretch state. 5. The inseamable lower leg boot according to claim 4, wherein the lower leg boot is made possible.

(7) An underpatch having a waist portion and a crotch portion, wherein the crotch portion is provided with a separation portion capable of separating and connecting the crotch portion to a front crotch portion and a back crotch portion. When the total length from the front upper end of the waist portion to the rear upper end of the waist portion through the crotch portion is defined as L, the separating portion is formed from the rear upper end to the rear crotch portion. The front inseam corresponding part from the upper front end to the front end of the front crotch can be expanded and contracted so that the total length Pb of the rear inseam corresponding part to the front end of the front crotch is 1/2 L or less. And when the crotch portion is separated by the separation portion, the front crotch corresponding portion is formed so as to be contractible until the total length P f becomes 2/5 L or less. Separate crotch lower boot.

(8) The front crotch-corresponding portion is characterized in that it can be extended and contracted by attaching an elastic material that can be elastically stretched to the center of the front crotch-corresponding portion in the vertical direction in a substantially extended state. The underseam-separated underpants according to claim 7, wherein

(9) The front crotch corresponding portion is configured to be expandable and contractable by attaching an elastic material that is elastically stretchable to a side edge of the front crotch corresponding portion in a substantially extended state. Separate crotch lower arm described in 7.