JP2003268601A - Crotch-part separable type underpants - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide crotch-part separable type underpants so designed that a wearer can easily use toilet only by separately opening an separable part of the crotch part, and preventing the lower front- and back-sides of the separately opened crotch part from becoming dirty due to water in a chamber pot. <P>SOLUTION: The underpants comprise a hip part 1 and crotch part 2. The crotch part 2 is provided with the separable part 8 at which the crotch part 2 is separated into a front-side crotch part 2a and a back-side crotch part 2b while being connectable. The separable part 8 is formed at a position where the full length Pf of a portion 13 corresponding to the front-side crotch part ranging from the front-side upper end of the crotch part to the tip of the separable part 8 of the front-side crotch part 2a is 2/5L while the full length from the front-side upper end of the hip part 1 to the back-side upper end passing through the crotch part 2 is L. A portion 14 ranging from the back-side upper end to the tip part of the separable part of the back-side crotch part 2b is formed so as to be stretchable and settled so that the full length Pb of the portion 14 becomes >1/2L when the crotch part 2 is separately opened at the separable part 8. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to underwear, that is, underwear for men and children or panties for women, and is related to a crotch-separated underwear which is configured to be separably connectable at a crotch part. .

[0002]

2. Description of the Related Art A conventional general undergarment has a ring-shaped waistline portion that makes one round around the waist and a crotch part that connects the front side and the rear side of the waistline portion. It has a shape having leg insertion holes formed between the crotch part and the waist part on both left and right sides of the portion.

The undergarment of such a form is troublesome to put on and take off, because it is necessary to insert the legs into the leg insertion holes or pull out the legs from the leg insertion holes when the legs are attached to or removed from the body. In order to improve this point,
For example, as described in Japanese Utility Model Publication No. 62-41003,
It has been proposed that the crotch part can be separated and connected at an intermediate position.

[0004]

By the way, when adding stool or urine in the toilet, the underpants are lowered in the case of the conventional general underpants. In the case of a separate type of underpants, it is possible to perform the supplement by simply separating the crotch, and if the supplement can be performed in such a form, especially for the elderly, the sick, or the underpants. It is very convenient for people who have difficulty in lowering.

However, in the conventional underwear separation type underpants, when the crotch part is separated and seated in a toilet bowl, the separated front crotch part and rear crotch part hang down in front of and behind the body and the front crotch part or The tip of the rear crotch may come into contact with water in the toilet bowl, or urine or stool may adhere to the front crotch or rear crotch. There were many problems in doing work just by separating the crotch.

In view of the above-mentioned circumstances, the present invention provides a lower crotch separation type which can be easily supplemented simply by separating the crotch part, and at which time the separated front and rear crotch parts are not contaminated. It is to provide a bunch.

[0007]

In order to achieve the above object, a first crotch separation type underpants according to the present invention has a waist portion and a crotch part, and the crotch part is An undergarment that separates the crotch into a front crotch part and a rear crotch part and is provided with a connectable separation part, the waistline passing through the crotch part from the front upper end of the waist part. When the total length from the front upper end to the front end of the separation portion of the front crotch is defined as L, the total length Pf of the front crotch corresponding portion is set to a position where the total length Pf is 2 / 5L or less. The rear crotch corresponding portion from the upper end of the rear side to the tip of the separation portion of the rear crotch portion is expandable and retractable when the crotch portion is separated by the separation portion. The corresponding total length Pb is 1
It is characterized in that it is formed so as to be contractible until it becomes / 2L or less.

In order to achieve the above object, a second crotch separation type underpants according to the present invention has a waist portion and a crotch part, and the crotch part has the crotch part on the front side. And a rear crotch part that is separable and connectable, and is provided from the front upper end of the waist part through the crotch part to the rear upper end of the waist part. Is L, the total length Pf of the front crotch corresponding part from the front upper end to the front end of the front crotch separation part is 2 / 5L.
It is provided at a position where the total length Pb of the rear crotch corresponding portion from the rear upper end to the tip of the separation portion of the rear crotch is larger than 1 / 2L, and the front crotch corresponding portion is It is expandable and contractible, and when the crotch part is separated by the separation part, the total length Pf is formed to be 2/5 L or less, and the rear crotch part corresponds to expansion and contraction. The crotch part is formed so as to be contractible until the entire length Pb thereof becomes ½ L or less when the crotch part is separated by the separating part.

In order to achieve the above object, a third crotch separation type underpants according to the present invention has a waistline portion and a crotch part, and the crotch part includes the front crotch part. And a rear crotch part that is separable and connectable, and is provided from the front upper end of the waist part through the crotch part to the rear upper end of the waist part. Is L, the total length Pb of the rear crotch corresponding part from the rear upper end to the tip of the rear crotch part is 1 / 2L.
The front crotch corresponding portion from the front upper end to the front end of the separation portion of the front crotch provided at the following position is expandable and contractible when the crotch portion is separated by the separation portion. It is characterized in that it is formed so as to be contractable until the total length Pf of the front crotch part corresponds to 2/5 L or less.

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 part from the front upper end of the waist part through the crotch part to the rear upper end of the waist part with the separation part connected (from the front upper end of the waist part through the crotch part to the waist part). Means a substantially maximum length when stretched in a direction reaching a rear upper end of the section, that is, a direction perpendicular to the lateral direction when the waistline extending direction is defined as a lateral direction.

Further, the total length Pf of the front crotch corresponding part and the total length Pb of the rear crotch corresponding part which are used when defining the position of the above-mentioned separating part are the actual total lengths in the vertical direction when neither expands nor contracts. In the case of expanding and contracting, it means the substantially maximum length in the vertical direction when it is expanded in the vertical direction.

Further, the above-mentioned "when the crotch part is separated by the separating part" means that the underwear of the present invention is mounted on the body and the front crotch part and / or the rear crotch part is stretched. This means when the crotch part is separated from the squeezed state by the separation part.

Further, "extendable / contractible" with respect to the front crotch corresponding portion and the rear crotch corresponding portion means that the portion can be expanded / contracted at least in the vertical direction.

[0014]

As for the crotch-separated underwear which can be easily attached and detached, the present inventor has found that the crotch-separated underwear is not only easy to attach / detach but also the crotch when the wearer wears. Focusing on the fact that it is possible to easily perform additional work just by separating it, as a result of various studies from that point of view, as a result, in the conventional mere underarm separation type underpants, sitting on a Western style or Japanese style toilet bowl for additional work At this time, it has been found that the separated front crotch part or rear crotch part may come into contact with the water in the toilet bowl, or urine or stool may adhere to it to be contaminated. The present invention has been made as a result of earnestly studying such a crotch separation type undergarment so that the undergarment can be easily and comfortably worn.

As described above, the crotch-separation-type underwear according to the present invention is provided with a separation part that separates the crotch part into the front crotch part and the rear crotch part and is connectable thereto. When the total length from the front upper end of the waist part to the rear upper end of the waist part through the crotch part is L, in the first underpants,
When the separation part is provided at a position where the total length Pf of the front crotch corresponding part from the front upper end to the tip of the separation part of the front crotch is not more than 2 / 5L, the separation part from the rear upper end to the rear crotch part When the crotch part is separated by the separation part, the total length Pb of the rear crotch part is 1/2 L
In the second undergarment, the total length Pf of the front crotch corresponding portion from the front upper end to the tip of the separation portion of the front crotch is larger than 2 / 5L, and When the separation part is provided at a position where the total length Pb of the rear crotch corresponding part from the side upper end to the tip of the separation part of the rear crotch is larger than 1 / 2L, the front crotch corresponding part is separated by the crotch part. When it is separated by the part, it is formed so as to be contractible until its total length Pf becomes 2 / 5L or less, and when the crotch part is separated by the separation part, the total length Pb is 1 / 2L or less. In the third undergarment, at the position where the total length Pb of the rear crotch corresponding part from the rear upper end to the tip of the separation part of the rear crotch is 1/2 L or less in the third undergarment. If a separation part is provided, it will extend from the upper end of the front side to the tip of the separation part of the front crotch part. Of the front crotch corresponding portion, the total length Pf of the front-side crotch corresponding portion when the crotch portion is separated by the separating unit 2
Since it is formed so that it can be contracted to / 5L or less, the front inseam corresponding part is 2 / 5L or less and the rear inseam corresponding part is 1 when the crotch is separated while being worn on the body in any underpants. The length is less than / 2L, and even if you sit down in the toilet bowl with such a length, there is no risk of touching the water in the toilet bowl on either the front or rear crotch, There is no risk of urine or stools adhering, and it is very easy to separate the crotch part by the separating part without lowering the underpants, and you can comfortably work without polluting the underpants. .

[0016]

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 a development view showing a stretched state of a first embodiment of a crotch separation type underpants according to the present invention, and FIG. 2 is a front view showing a stretched state of a separated part of the underpants shown in FIG. FIG. 3 is a side view showing the extension state of the separation part connection of the underpants shown in FIG. 1,
FIG. 4 is a development view showing a state where the rear inseam corresponding portion is contracted.

As shown in FIG. 1, the undergarment of the present embodiment is a panty for women, which has a waistline portion (a one-dot chain line frame) extending laterally and located around the waist when worn on the body. (A portion located in A) and a longitudinal direction including a portion that is connected from the front side portion 1a of the waistline portion 1 to the rear side portion 1b of the waistline portion 1 and is located in the crotch when worn on the body ( And a crotch portion (a portion of the portion located in the frames B and C of the alternate long and short dash line excluding the waistline portion 1) 2 extending in the direction perpendicular to the lateral direction. Waist part 1 and crotch part 2
Is basically formed of a cloth having no elasticity or slightly elasticity.

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

The crotch portion 2 is also formed with a separating portion 8 which can be separately connected. The separating portion 8 is formed at a predetermined position of the crotch portion 2 and is provided with a front crotch portion (a portion of the portion located inside the frame B of the alternate long and short dash line excluding the waistline portion 1) 2a and a rear side thereof. And a crotch portion (a portion of the portion located inside the frame C of the one-dot chain line excluding the waistline portion 1) 2b, which is formed by cutting the crotch portion 2 along a transverse cutting line. Both cutting end portions 9 and 10, and both cutting end portions 9 and 1
It is composed of surface fasteners 11 and 12 which are connecting means capable of separating and connecting the both cut end portions 9 and 10 provided at 0. One surface fastener 11 is provided on the back side in FIG. 1 of the cutting end portion 9, and the other surface fastener 12 is provided on the front side in FIG. 1 of the cutting end portion 10. Separately connectable connection means 11, 12
In addition to surface fasteners such as Velcro (registered trademark),
Various things such as buttons and button holes, hooks and hook receivers can be used.

The portion from the front upper end of the waistline portion 1 of the above underwear through the crotch portion 2 to the rear upper end of the waistline portion 1 is a separating portion from the front upper end of the waistline portion 1 to the front crotch portion 2a. A front crotch corresponding part (a part located in the frame B of the alternate long and short dash line in FIG. 1) 13 which is a part up to the tip (the tip of the cut end 9);
The rear crotch corresponding part (positioned in the frame C indicated by alternate long and short dash line in FIG. 1) which is a part from the rear upper end of the waistline portion 1 to the tip of the separation part (the tip of the cut end 10) of the rear crotch portion 2b. In the present embodiment, the rear crotch corresponding portion 14 is formed so as to be capable of expanding and contracting in the vertical direction, and the front crotch portion 2a and the rear crotch portion 2b are separated from each other by the separating portion 8 in this embodiment. And the rear inseam-corresponding portion 14 is substantially maximally stretched in the vertical direction, the entire length from the front upper end of the waist portion 1 through the crotch portion 2 to the rear upper end of the waist portion 1 (vertical length). When the total length in the direction) is L (= Lf + Lb), the separating portion 8 has a total length Pf in the vertical direction of the front inseam corresponding portion 13 (hereinafter simply referred to as the total length Pf).
Is referred to as 2/5 L or less.

As shown in FIG. 1, the Lf is the center of the separating portion 3 from the front upper end of the waistline portion 1 in the front crotch corresponding portion 13 (the center of the surface fastener 11 which is the connecting means).
Means the length up to, and the above Lb is the rear inseam corresponding portion 14
It means the length from the rear upper end of the waist part 1 to the center of the separating part 3 (the center of the surface fastener 12 which is the connecting means).

As shown in FIG. 1, the rear crotch part 14 has three elastic rubbers 15 extending and contracting in the vertical direction.
Is sewn to the material of the rear inseam-corresponding portion 14 in a substantially maximally stretched state, whereby the rear inseam-corresponding portion 14 is formed so as to be capable of expanding and contracting in the longitudinal direction, and especially in the free state, this rear inseam-corresponding portion The total length Pb of the portion 14 in the vertical direction (hereinafter simply referred to as the total length Pb) is 1 /
It is formed so as to be 2 L or less. Therefore, when the underpants of the present embodiment are not worn on the body, the rear inseam corresponding portion 14 contracts in the vertical direction to be in the state shown in FIG.

When the undergarment of this embodiment is worn on the body, first, the rear crotch corresponding portion 14 is applied to the buttocks in the expanded state shown in FIG. 4, and then both cut end portions 4 and 5 of the waist portion are attached. Rotate along the circumference of the waist toward the front side of the body as shown by the arrows D and E in the drawings, and attach the fasteners 6, 7 on the side of the waist.
Abut and connect. In this state, the front inseam corresponding part 13
Is located on the front side of the body, the rear crotch corresponding part 14 located behind the buttocks is turned toward the front side in the arrow F direction through the crotch part, and the rear crotch corresponding part 14 is pulled to pull the rubber 15 By extending the surface fastener 1
1, 12 are brought into contact with each other to be connected, and are attached to the body in the state shown in FIGS.

When wearing 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 portion 2 by the separating portion 8, and the toilet bowl is in this state. Just sit down and add something. At this time, the front crotch part 2a of the separated crotch part 2 originally has a short total length Pf of the front crotch corresponding part 13 of 2/5 L or less as described above, and therefore, it may come into contact with water in the toilet bowl when stooling or urine. Is not adhered, and the rear crotch-supporting portion 14 loses its stretching force when separated by the separating portion 8 and becomes free, and contracts until the total length Pb becomes 1/2 L or less by the rubber 15. Therefore, there is no fear that the water is too long to come into contact with the water in the toilet bowl or stool adheres to the toilet bowl, so that it is possible to comfortably work.

Next, a second embodiment of the present invention will be described. FIG. 5 is a second part of the crotch separation type underpants according to the present invention.
6 is a development view showing an expanded state of the embodiment of FIG. 6, and FIG. 6 is a development view showing a state in which the front crotch corresponding part and the rear crotch corresponding part are contracted. The basic configuration of this embodiment is the same as that of the first embodiment, and the same components are designated 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. Is different. That is, in the second embodiment, both the front crotch corresponding part 13 and the rear crotch corresponding part 14 are formed so as to be capable of expanding and contracting in the vertical direction, and the separating part 8 allows the front crotch part 2a and the rear crotch part 2a to be extended. With the crotch part 2b connected and the front crotch corresponding part 13 and the rear crotch corresponding part 14 both being substantially maximally stretched, the waist upper part 1 passes through the crotch part 2 from the front upper end of the waist part 1 Assuming that the total length (longitudinal length) up to the rear upper end is L (= Lf + Lb), the separating portion 8 has a total length Pf of the front inseam corresponding portion 13 that is larger than 2 / 5L, and corresponds to the rear inseam. The total length Pb of the part 14 is 1 / 2L
It is formed at a position that becomes larger.

As shown in the figure, three elastically expandable and contractable rubbers 16 are sewn to the front crotch corresponding portion 13 in the longitudinal direction as shown in the drawing in the substantially maximum stretched state. The front inseam-corresponding portion 13 is formed so as to be capable of expanding and contracting in the vertical direction, and the total length Pf of the front inseam-corresponding portion 13 is formed so that the rubber 16 contracts to be not more than 2 / 5L especially in a free state. In addition, the rear inseam-corresponding portion 14 has a vertical direction of 3 as shown.
The elastic elastic rubber 15 of the book is sewn to the material of the rear inseam corresponding portion 14 in a substantially maximum stretched state, whereby the rear inseam corresponding portion 14 is formed to be extendable and contractible in the vertical direction, and particularly In the free state, the entire length Pb of the rear inseam corresponding portion 14 is formed such that the rubber 15 contracts to be 1/2 L or less.

Also in the case of the undergarment 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 this embodiment, the front and rear inseam corresponding portions 13). , 14 are both formed to be expandable and contractable, so that either or both of the crotch corresponding parts 13 and 14 are connected by the separating part 8 while being pulled), and when the body is worn on the body The surface fasteners 11 and 12
And the crotch part 2 is separated by the separating part 8, and in this state, the user can sit down on the toilet bowl and use it. In this case, since the front crotch corresponding part 13 is separated by the separating part 8 to lose the stretching force and becomes free, and the rubber 16 contracts until the total length Pf becomes 2/5 L or less, it is too long. There is no risk of touching water in the toilet bowl or adhesion of urine, and the rear crotch support portion 14 is separated by the separation portion 8 so that the stretching force disappears and becomes free. Since the rubber 15 contracts until the total length Pb becomes 1/2 L or less, there is no fear that water in the toilet bowl adheres or stool adheres because it is too long, and it is possible to comfortably wear.

Next, a third embodiment of the present invention will be described. FIG. 6 is a third part of the crotch separation type underpants according to the present invention.
FIG. 7 is a development view showing the stretched state of the embodiment of FIG. 7, and FIG. 7 is a development view showing the state in which the front inseam corresponding portion is contracted. This embodiment also has the same basic configuration as that of the first embodiment,
The same components are designated 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 is contracted instead of the rear crotch corresponding portion 14. The difference is that it is configured to do. That is, in the third embodiment, the front crotch corresponding portion 13 is formed to be expandable and contractable, and the front crotch portion 2a is formed by the separating portion 8.
And the rear crotch portion 2b are connected and the front crotch corresponding portion 13 is substantially maximally stretched, the entire length from the front upper end of the waist portion through the crotch portion to the rear upper end of the waist portion (vertical length) (Total length in the direction) is L (= Lf + Lb), the separating portion 8 has a total length Pb in the vertical direction of the rear inseam corresponding portion 14.
Is formed at a position of 1 / 2L or less.

As shown in the drawing, three elastically expandable and contractable rubbers 16 are sewn to the front inseam-corresponding portion 13 in a substantially maximum stretched state on the cloth of the front inseam-corresponding portion 13. The front inseam-corresponding portion 13 is formed so as to be capable of expanding and contracting in the vertical direction, and particularly in a free state, the overall length Pf in the longitudinal direction of the front inseam-corresponding portion 13 is set so that the rubber 16 contracts to be 2/5 L or less. Is formed in.

Also in the case of the undergarment 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 this embodiment, the front crotch corresponding portion 13 can be expanded and contracted). Since it is formed on the front inseam-corresponding portion 13 while pulling the front inseam corresponding portion 13 through the crotch portion toward the rear side to connect with the separation portion 8), when wearing from the state of being worn on the body, The fasteners 11 and 12 may be pulled apart to separate the crotch portion 2 at the separating portion 8, and in this state, the person may sit down on the toilet bowl and use it. In this case, the rear crotch portion 2b of the separated crotch portion 2 is originally the rear crotch portion 1 as described above.
Since the total length of 4 is as short as 1/2 L or less, there is no risk of touching water in the toilet bowl or sticking of stool during addition, and the front inseam corresponding portion 13 is also separated by the separating portion 8 to extend. The rubber 16 loses its force and becomes free, and the rubber 16 contracts until the total length Pf becomes 2/5 L or less, so there is no fear of touching water in the toilet bowl or sticking urine, etc. You can do extra work.

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 having no elasticity or a small amount of elasticity, and rubber 15 and 16 are added to the material. Since they are attached, the substantial maximum lengths of L, Lf, and Lb when they are stretched in the longitudinal direction are respectively from the upper end on the front side of the waistline portion 1 in the state of being connected by the connecting portion 8 to the crotch portion. The length in the free state of the fabric through the waist upper part to the rear upper end, the length in the free direction of the fabric forming the front crotch corresponding part 13, and the rear crotch corresponding part 14 It is equal to the vertical length of the forming fabric in the free state.

Further, in each of the above-mentioned embodiments, as means for imparting elasticity to the front crotch corresponding part 13 and the rear crotch corresponding part 14, the center of the cloth of the front crotch corresponding part 13 and the rear crotch corresponding part 14 is used. Elastic rubber 15,1 in the vertical direction
6 is sewn, but the elastic rubbers 15 and 16 may be attached to the cloth so that the front crotch corresponding portion 13 or the rear crotch corresponding portion 14 can be contracted. Various methods such as bonding with an agent can be adopted. Further, the elastic rubber does not necessarily have to be attached to the central portion, and for example, FIG. 1, FIG. 5, FIG.
As indicated by a chain double-dashed line, elastic rubbers 17 and 18 are attached to the side edges of the front crotch corresponding portion 13 or the rear crotch corresponding portion 14 (the portions corresponding to the peripheral edges of the leg insertion holes) to which elasticity is to be given by sewing or the like. As a result, the front crotch corresponding portion 13 or the rear crotch corresponding portion 14 contracts and their total length Pf, P
It can also be configured such that b is short.

Further, as a method of imparting elasticity,
Any method other than the method of attaching an elastic material such as rubber may be adopted. For example, the front crotch corresponding portion 13 or the rear crotch corresponding portion 14 is made of a material having sufficient elasticity. By doing so, when separated by the separation unit 8, Pf and Pb may be formed to shrink until they become 2/5 L or less and 1/2 L or less, respectively.

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

Further, in each of the above-mentioned embodiments, the separating portion 3 is also formed in the waistline portion 1, but the separating portion 3 of the waistline portion 1 is not always necessary, and may be provided as necessary. Good.

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

[Brief description of drawings]

FIG. 1 is a development view showing a stretched state of a first embodiment of an undergarment according to the present invention.

FIG. 2 is a front view showing an extension state of the separation portion connection of the underpants shown in FIG.

FIG. 3 is a side view showing an extended state of connection of the separation portion of the underpants shown in FIG.

FIG. 4 is a development view showing a state in which a rear crotch part corresponding to the underpants shown in FIG. 1 is contracted.

FIG. 5 is a development view showing a stretched state of the second embodiment of the undergarment according to the present invention.

FIG. 6 is a development view showing a state in which front and rear crotch-corresponding portions of the underpants shown in FIG. 5 are contracted.

FIG. 7 is a development view showing a stretched state of the third embodiment of the undergarment according to the present invention.

8 is a development view showing a state in which the front crotch part of the underpants shown in FIG. 7 is contracted.

[Explanation of symbols]

1 waist area 2 inseam 2a Front crotch 2b Rear crotch 8 Separation section 13 Front inseam area 14 Rear inseam area

Claims (3)

[Claims] 1. A lower part having a waistline part and a crotch part, and the crotch part provided with a separating part for separating and connecting the crotch part into a front crotch part and a rear crotch part. When the total length from the front upper end of the waistline section through the crotch section to the rear upper end of the waistline section is L, the separating section defines the front upper end to the front crotch section. Is provided at a position where the total length Pf of the front crotch corresponding part to the tip of the separating part is 2 / 5L or less, and the rear crotch corresponding part from the rear upper end to the tip of the separating part of the rear crotch can be expanded and contracted. The crotch 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 when the crotch part is separated by the separation part. Separated underwear. 2. A lower portion having a waistline portion and a crotch portion, and the crotch portion provided with a separating portion which separates the crotch portion into a front crotch portion and a rear crotch portion and can be connected to the crotch portion. When the total length from the front upper end of the waistline section through the crotch section to the rear upper end of the waistline section is L, the separating section defines the front upper end to the front crotch section. The total length Pf of the front crotch corresponding part to the tip of the separation part is larger than 2 / 5L, and the total length Pb of the rear crotch corresponding part from the rear upper end to the tip of the separation part of the rear crotch is 1 / Provided at a position larger than 2L, the front inseam corresponding portion is expandable and contractible, and when the crotch portion is separated by the separating portion, the entire length Pf is contracted until it becomes 2 / 5L or less. The rear inseam-corresponding portion is expandable and contractible, and A crotch-separated underwear, wherein the crotch part is formed so as to be contractible until its total length Pb becomes 1/2 L or less when separated by the separation part. 3. A lower part having a waistline portion and a crotch part, and the crotch part provided with a separating part for separating the crotch part into a front crotch part and a rear crotch part and connecting them. When the total length from the front upper end of the waistline portion to the rear upper end of the waistline portion is L, the separating portion is a rear end from the rear upper end. It is provided at a position where the total length Pb of the rear crotch corresponding part to the tip of the separation part of the crotch is 1/2 L or less, and the front crotch corresponding part from the front upper end to the tip of the separation part of the front crotch can be expanded and contracted. In addition, the crotch separation is characterized in that when the crotch part is separated by the separation part, the crotch part is formed so as to be contractable until the total length Pf of the front crotch corresponding part becomes 2/5 L or less. Underpants.