Underwear

Abstract

To provide underwear capable of solving tightness during urination.SOLUTION: Male underwear 1 has a pant main body 10. The pant main body includes a front waist top part 11, a front body part 12, a back waist top part, and a back body part. The front waist top part and the front body part are configured to be openable in the horizontal direction, at least from a vertical middle part 12' of the front body part up to its upper end 11', at the horizontal center.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to underwear. [Background technology]

[0002] There are pants-type or trunk-type men's underwear, and the upper end has a continuous waist top part. For example, Patent Document 1 discloses such men's underwear. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-117968 A Summary of the Invention [Problem to be solved by the invention]

[0004] In such conventional men's underwear, when relieving oneself, for example, the waist button of the trousers is unbuttoned to open the opening and closing part, and the waist top part of the men's underwear is lowered to expose the male genitalia, or, without lowering the waist top part, the opening and closing part of the men's underwear is further opened to expose the male genitalia.

[0005] However, it has been pointed out that it is uncomfortable and inconvenient to relieve oneself by lowering the waist top in this way, or by leaving the opening and closing part of men's underwear open without lowering the waist top.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide underwear that can eliminate the uncomfortable feeling felt when relieving oneself. [Means for solving the problem]

[0007] In order to solve the above problems, the underwear of the present invention is underwear having a pant main body portion, which has a front waist top portion, a front body portion, a rear waist top portion, and a rear body portion, and which is characterized in that the front waist top portion and the front body portion have an opening and closing portion at the left-right central portion that can be opened and closed in the left-right direction, at least from the middle portion in the vertical direction of the front body portion to the upper end.

[0008] According to the present invention, the front waist top and the front body are openable and closable in the left-right direction at least from the middle to the top in the vertical direction at the left-right center, so that when relieving oneself, the waist button of the trousers can be unbuttoned to open the openable and closable parts, and the underwear can be opened up to the top to expose the male genitalia, for example, in the case of a man. This eliminates the feeling of tightness when relieving oneself.

[0009] The front waist top portion has a right side front waist top portion and a left side front waist top portion, the front body portion has a right side front body portion and a left side front body portion, the opening / closing portion has a right side opening / closing portion and a left side opening / closing portion, the left side of the right side front waist top portion and the right side of the right side front body portion form the right side opening / closing portion, the right side of the left side front waist top portion and the left side front body portion form the left side opening / closing portion, the right side opening / closing portion opens to the right side and the left side opening / closing portion opens to the left side, and when opened, the left side edge side of the right side opening / closing portion and the right side edge side of the left side opening / closing portion are separated in the left-right direction from the lower end to the upper end at a position equivalent to the crotch in the vertical middle portion, and when closed, the left side edge side of the right side opening / closing portion and the right side edge side of the left side opening / closing portion overlap.

[0010] The left edge of the right opening / closing part is configured to gradually widen to the left as it goes downward when closed, and the right edge of the left opening / closing part is configured to gradually widen to the right as it goes downward when closed, and the right opening / closing part and the left opening / closing part are configured so that the overlapping parts in the left and right directions widen as they go downward when closed, thereby reliably preventing the male genitalia from being exposed through the opening / closing part when closed, and reliably holding the crotch area by the overlapping parts in the left and right directions, improving comfort when worn. Also, the overlapping parts in the left and right directions can reduce urine seeping to the outside.

[0011] The lower end of the left edge portion of the right opening / closing portion and the lower end of the right edge portion of the left opening / closing portion are approximately aligned in the vertical direction, thereby improving the comfort of wearing the shoes when the opening / closing portion is open.

[0012] The right side opening / closing portion and the left side opening / closing portion are configured to overlap when closed so that the right side edge side of the left side opening / closing portion is on the front side and the left side edge side of the right side opening / closing portion is on the rear side, making it easier for right-handed users to open and close the opening / closing portion, thereby accommodating right-handed users.

[0013] The right side opening / closing portion and the left side opening / closing portion are configured to overlap when closed so that the left side edge side of the right side opening / closing portion is on the front side and the right side edge side of the left side opening / closing portion is on the rear side, making it easier for left-handed users to open and close the opening / closing portions, thereby accommodating left-handed users.

[0014] An engagement means for engaging the left side and the right side is provided on the left side of the right side front waist top part, which is the upper edge of the right side opening / closing part, and on the right side of the left side front waist top part, which is the upper edge of the left side opening / closing part, so that the opening / closing part can be opened or closed by engaging and disengaging the engagement means.

[0015] The engagement means is provided on the front side to the right of the center in the left-right direction, so that it can be used by right-handed users.

[0016] The engagement means is provided on the front side to the left of the center in the left-right direction, so that it can be used by left-handed users.

[0017] The engaging means is, for example, a button, a hook and loop fastener, or a hook member.

[0018] At least a portion of the front waist top portion and the rear waist top portion is made of stretchable fabric.

[0019] The left side portion of the right front waist top portion that forms the right side opening / closing portion is made of a fabric that is less stretchy than the right side portion of the right side waist top portion, and the right side portion of the left front waist top portion that forms the left side opening / closing portion is made of a fabric that is less stretchy than the left side portion of the left side waist top portion.This prevents excessive tension from being applied to the engagement means, making it difficult to release the engagement, and makes it easier to open and close the opening / closing portion.

[0020] The left edge side of the right side opening / closing portion and the right edge side of the left side opening / closing portion are configured to hang down downward, and when closed, the width of the overlapping portions of the right side opening / closing portion and the left side opening / closing portion in the vertical and horizontal directions is approximately equal. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to eliminate the feeling of awkwardness when relieving oneself. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a front view showing the configuration of right-handed men's underwear according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a front view showing a right-handed male underwear according to an embodiment of the present invention with the left side opening / closing part open. [Diagram 3] FIG. 1 is a front view showing a right-handed male underwear according to an embodiment of the present invention with the right-side opening / closing part open. [Figure 4] FIG. 1 is a rear view showing the configuration of a right-handed male underwear according to an embodiment of the present invention. [Diagram 5] FIG. 1 is a front view showing the configuration of left-handed men's underwear according to an embodiment of the present invention. [Figure 6] FIG. 1 is a front view showing the left-handed male underwear according to an embodiment of the present invention with the right-side opening / closing part open. [Figure 7] FIG. 1 is a front view showing a state in which the left-handed male underwear according to an embodiment of the present invention has its left-side opening and closing part open. [Figure 8] FIG. 1 is a rear view showing the configuration of left-handed men's underwear according to an embodiment of the present invention. [Figure 9] FIG. 2 is an enlarged front view showing the configuration of the engaging means in the men's underwear. [Figure 10] FIG. 13 is an enlarged front view showing the configuration of another engaging means in the men's underwear. [Figure 11] FIG. 13 is an enlarged front view showing the configuration of still another engaging means in the men's underwear. [Figure 12] FIG. 13 is an enlarged front view showing, in a further enlarged scale, the configuration of still another engaging means in the men's undergarment. [Figure 13] FIG. 13 is a front view showing the configuration of a right-handed male underwear pertaining to a modified example of the present invention. [Figure 14] FIG. 13 is a front view showing a right-handed male underwear pertaining to a modified example of the present invention, with the left side opening / closing part open. [Figure 15] FIG. 13 is a front view showing a right-handed male underwear piece pertaining to a modified example of the present invention, with the right-side opening / closing part open. [Figure 16] FIG. 13 is a front view showing the configuration of a left-handed male underwear pertaining to a modified example of the present invention. [Figure 17] FIG. 13 is a front view showing a left-handed male underwear pertaining to a modified example of the present invention, with the right-side opening and closing part open. [Figure 18]FIG. 13 is a front view showing a left-handed male underwear pertaining to a modified example of the present invention, with the left side opening / closing part open. [Figure 19] FIG. 13 is an enlarged front view showing the configuration of the engaging means in the men's undergarment of the same modified example. [Figure 20] FIG. 13 is an enlarged front view showing, in enlarged scale, the configuration of another engaging means in the men's undergarment of the same modified example. [Figure 21] FIG. 13 is an enlarged front view showing, in enlarged scale, the configuration of still another type of engagement means in the men's undergarment of this modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] [First embodiment] Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a front view showing the configuration of right-handed men's underwear according to an embodiment of the present invention, Fig. 2 is a front view showing the left opening and closing part of right-handed men's underwear according to an embodiment of the present invention in an open state, Fig. 3 is a front view showing the right opening and closing part of right-handed men's underwear according to an embodiment of the present invention in an open state, Fig. 4 is a back view showing the configuration of right-handed men's underwear according to an embodiment of the present invention, Fig. 5 is a front view showing the configuration of left-handed men's underwear according to an embodiment of the present invention, and Fig. 6 is a front view showing the right opening and closing part of left-handed men's underwear according to an embodiment of the present invention in an open state. FIG. 8 is a back view showing the configuration of left-handed men's underwear according to an embodiment of the present invention, FIG. 9 is an enlarged front view showing an enlarged configuration of an engagement means in the men's underwear, FIG. 10 is an enlarged front view showing an enlarged configuration of other engagement means in the men's underwear, FIG. 11 is an enlarged front view showing an enlarged configuration of yet another engagement means in the men's underwear, and FIG. 12 is a further enlarged front view showing the configuration of yet another engagement means in the men's underwear.

[0024] In the following explanation, the waist top portion 11, 13 side of men's undergarments 1, 2, 3, 4 will be referred to as the up, the leg insertion portion 15 side will be referred to as the down, the front body portion 12 side of men's undergarments 1, 2, 3, 4 will be referred to as the forward, the back body portion 14 side of men's undergarments 1, 2, 3, 4 will be referred to as the rear, and the right hand side will be referred to as the right side and the left hand side will be referred to as the left side based on the state in which men's undergarments 1, 2, 3, 4 are worn by a person, and each direction will be clearly indicated in the drawings.

[0025] The configuration of male undergarments 1, 2 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. Male undergarments 1, 2 are male undergarments 1, 2 having a pants main body portion 10, and pants main body portion 10 has a front waist top portion 11, a front body portion 12, a rear waist top portion 13, and a back body portion 14, with a lower edge portion 11a of the front waist top portion 11 connected to an upper edge portion 12a of the front body portion 12, a lower edge portion 13a of the rear waist top portion 13 connected to an upper edge portion 14a of the back body portion 14, and side edges 12b, 12c of the front body portion 12 connected to side edges 12b, 12c of the back body portion 14. 4b, 14c are connected, and the center 12d' of the lower edge 12d of the front body part 12 is connected to the center 14d' of the lower edge 14d of the back body part 14. Furthermore, the non-connected portion between the lower edge 12d of the front body part 12 and the lower edge 14d of the back body part 14 is a leg insertion part 15 through which the leg is inserted. The front waist top part 11 and the front body part 12 are openable and closable in the left-right direction at the center in the left-right direction from the middle part 12' in the vertical direction of the front body part 12 to the front waist top part 11 at the upper end 11'. The middle part 12' in the vertical direction of the front body part 12 is located at a position equivalent to the crotch. The front waist top part 11, the front body part 12, the back waist top part 13, and the back body part 14 are made of cloth. At least a portion of front waist top portion 11 and rear waist top portion 13 is configured to be stretchable. The stretchable fabric is made of fabric containing a rubber material. Lower end edge portion 15a of leg insertion portion 15 is located between the groin and the middle of the thigh when worn, and male undergarments 1, 2 are of the briefs or trunks type.

[0026] The front waist top portion 11 has a right side front waist top portion 11A and a left side front waist top portion 11B, the front body portion 12 has a right side front body portion 12A and a left side front body portion 12B, the opening and closing portions 20, 30 have a right side opening and closing portion 20 and a left side opening and closing portion 30, the left sides 11A', 12A' of the right side front waist top portion 11A and the right side front body portion 12A form the right side opening and closing portion 20, the right sides 11B', 12B' of the left side front waist top portion 11B and the left side front body portion 12B form the left side opening and closing portion 30, and the right side opening and closing portion 20 is The right and left opening / closing sections 20 and 30 are configured so that, when open, the left edge 20a of the right opening / closing section 20 and the right edge 30a of the left opening / closing section 30 are spaced apart in the left-right direction from the lower ends 20a', 30a' at a position equivalent to the crotch in the middle in the vertical direction to the upper end 11', and when closed, the left edge 20a of the right opening / closing section 20 and the right edge 30a of the left opening / closing section 30 are closed so that they overlap.

[0027] The left edge 20a of the right opening / closing part 20 is configured so that the width gradually increases to the left as it goes downward when closed, and the right edge 30a of the left opening / closing part 30 is configured so that the width gradually increases to the right as it goes downward when closed, and the right opening / closing part 20 and the left opening / closing part 30 are configured so that the overlapping part in the left and right direction increases as it goes downward when closed. In addition, the lower end 20a' of the left edge 20a of the right opening / closing part 20 and the lower end 30a' of the right edge 30a of the left opening / closing part 30 are approximately aligned in the vertical direction. More specifically, the vertical positional deviation between the lower end 20a' of the left edge 20a of the right opening / closing part 20 and the lower end 30a' of the right edge 30a of the left opening / closing part 30 is within 1 cm.

[0028] The left side 11A' of the right front waist top part 11A, which forms the right side opening / closing part 20, is made of a fabric that is less stretchy than the right side 11A'' of the right side waist top part 11A, and the right side 11B' of the left front waist top part 11B, which forms the left side opening / closing part 30, is made of a fabric that is less stretchy than the left side 11B'' of the left side waist top part 11B.

[0029] The left side 11A' of the right front waist top portion 11A forming the right opening / closing portion 20 and the right side 11B' of the left front waist top portion 11B forming the left opening / closing portion 30 are made of fabric that does not contain rubber material.

[0030] The left side 11A' of the right front waist top part 11A forming the right side opening / closing part 20 and the right side 11B' of the left front waist top part 11B forming the left side opening / closing part 30 are made of cotton fabric, cotton blend fabric, polyester fabric, etc. that do not contain rubber material.

[0031] Here, in the right-handed male underwear 1 shown in Figures 1 to 4, the right opening / closing portion 20 and the left opening / closing portion 30 are configured to overlap when closed so that the left edge 20a of the right opening / closing portion 20 is the front side, and the right edge 30a of the left opening / closing portion 30 is the rear side.

[0032] In addition, in the left-handed male underwear 2 shown in Figures 5 to 8, the right opening and closing part 20 and the left opening and closing part 30 are configured to overlap when closed so that the right edge 30a of the left opening and closing part 30 is on the front side, and the left edge 20a of the right opening and closing part 20 is on the rear side.

[0033] In the above-described male undergarments 1 and 2, engagement means 40 is provided on left side 11A' of right side front waist top portion 11A, which is upper edge 20b of right side opening / closing portion 20, and on right side 11B' of left side front waist top portion 11B, which is upper edge 30b of left side opening / closing portion 30, for engaging left side 11A' and right side 11B'. Engagement means 40 is configured to be able to be engaged and disengaged.

[0034] In men's undergarment 1, engagement means 40 is provided to the right of center L in the left-right direction of the front part. In addition, in men's undergarment 2, engagement means 40 is provided to the right of center L in the left-right direction of the front part.

[0035] The engagement means 40 may be a button 41 as shown in FIG. 9, a hook and loop fastener 42 as shown in FIG. 10, or a hook member 43 as shown in FIGS.

[0036] The button 41 is composed of a button body 41a and a buttonhole 41b. That is, the button body 41a is provided on either the left side 11A' of the right front waist top part 11A or the right side 11B' of the left front waist top part 11B of the left opening / closing part 30, and the buttonhole 41b is provided on the other of the left side 11A' of the right front waist top part 11A or the right side 11B' of the left front waist top part 11B of the left opening / closing part 30. By inserting the button body 41a into the buttonhole 41b, the left side 11A' of the right front waist top part 11A and the right side 11B' of the left front waist top part 11B are engaged with each other.

[0037] In addition, button 41 may be provided as a male snap button on either the left side 11A' of the right front waist top portion 11A or the right side 11B' of the left front waist top portion 11B of the left side opening / closing portion 30, and a female snap button on the other of the left side 11A' of the right front waist top portion 11A or the right side 11B' of the left front waist top portion 11B of the left side opening / closing portion 30, and the left side 11A' of the right front waist top portion 11A may be engaged with the right side 11B' of the left front waist top portion 11B by engaging the male snap button with the female snap button.

[0038] The hook-and-loop fastener 42 is made up of a male hook-and-loop fastener 42a and a female hook-and-loop fastener 42b. That is, the male hook-and-loop fastener 42a is provided on either the left side 11A' of the right front waist top portion 11A or the right side 11B' of the left front waist top portion 11B of the left side opening-and-closing portion 30, and the female hook-and-loop fastener 42b is provided on the other of the left side 11A' of the right front waist top portion 11A or the right side 11B' of the left front waist top portion 11B of the left side opening-and-closing portion 30, and the left side 11A' of the right front waist top portion 11A is engaged with the right side 11B' of the left front waist top portion 11B by engaging the male hook-and-loop fastener 42a and the female hook-and-loop fastener 42b.

[0039] Furthermore, the hook member 43 is composed of a male hook member 43a bent or curved into a U-shape, a J-shape, or a U-shape, and a ring-shaped female hook member 43b. That is, the male hook member 43a is provided on either the left side 11A' of the right front waist top part 11A or the right side 11B' of the left front waist top part 11B of the left side opening / closing part 30, and the female hook member 43b is provided on the other of the left side 11A' of the right front waist top part 11A or the right side 11B' of the left front waist top part 11B of the left side opening / closing part 30, and the tip 43a' of the male hook member 43a is hooked onto the ring-shaped female hook member 43b, and the male hook member 43a and the female hook member 43b are engaged with each other to engage the left side 11A' of the right front waist top part 11A and the right side 11B' of the left front waist top part 11B (FIG. 12 shows an example of a hook member 43 bent into a U-shape and flat).

[0040] As explained above, according to the present invention, the front waist top portion 11 and the front body portion 12 are provided with the opening and closing portions 20, 30 at the left-right center portion that can be opened and closed in the left-right direction at least from the middle portion 12' in the up-down direction of the front body portion 12 to the top end 11', so that when relieving oneself, the waist button of the trousers can be unbuttoned to open the opening and closing portions 20, 30, while opening up to the top end 11' of the male underwear 1, 2 to expose the male genitalia. This eliminates the feeling of tightness when relieving oneself.

[0041] In addition, the left edge 20a side of the right opening / closing part 20 is configured so that its width in the left-right direction gradually increases as it moves downward, and the right edge 30a side of the left opening / closing part 30 is configured so that its width in the left-right direction gradually increases as it moves downward. By configuring the right opening / closing part 20 and the left opening / closing part 30 so that the overlapping portion in the left-right direction increases in the downward direction when the right opening / closing part 20 and the left opening / closing part 30 are closed, exposure of the male genitalia can be reliably prevented from the opening / closing parts 20, 30 when closed, and the overlapping portion in the left-right direction can reliably hold the crotch area, improving comfort when worn.

[0042] Furthermore, the lower end 20a' of the left edge portion 20a of the right opening / closing portion 20 and the lower end 30a' of the right edge portion 30a of the left opening / closing portion 30 are approximately aligned in the vertical direction, thereby improving the comfort of wearing the shoes when the opening / closing portions 20, 30 are opened.

[0043] Furthermore, the right side opening / closing section 20 and the left side opening / closing section 30 are configured to overlap when closed so that the right side edge 30a of the left side opening / closing section 30 is the front side and the left side edge 20a of the right side opening / closing section 20 is the rear side, making it easier for right-handed users to open and close the opening / closing sections 20, 30, thereby accommodating right-handed users.

[0044] Furthermore, the right side opening / closing section 20 and the left side opening / closing section 30 are configured to overlap when closed so that the left side edge 20a of the right side opening / closing section 20 is the front side and the right side edge 30a of the left side opening / closing section 30 is the rear side, thereby making it easier for left-handed users to open and close the opening / closing sections 20, 30, thereby accommodating left-handed users.

[0045] In addition, an engagement means 40 is provided on the left side 11A' of the right side front waist top portion 11A, which is the upper edge 20b of the right side opening / closing portion 20, and on the right side 11B' of the left side front waist top portion 11B, which is the upper edge 30b of the left side opening / closing portion 30, to engage the left side 11A' and the right side 11B', so that the opening / closing portion can be opened or closed by engaging and disengaging the engagement means 40.

[0046] Furthermore, the engagement means 40 is provided on the right side of the center L in the left-right direction on the front side, so that it can be used by right-handed users.

[0047] Furthermore, the engagement means 40 is provided on the left side of the center L in the left-right direction on the front side, so that it can be used by left-handed users.

[0048] Furthermore, the left side 11A' portion of the right front waist top portion 11A that forms the right side opening / closing portion 20 is made of a fabric that is less stretchy than the right side 11A'' portion of the right side waist top portion 11A, and the right side 11B' portion of the left front waist top portion 11B that forms the left side opening / closing portion 30 is made of a fabric that is less stretchy than the left side 11B'' portion of the left side waist top portion 11B.This prevents excessive tension from being applied to the engagement means 40, making it difficult to release the engagement, and makes it easier to open and close the opening / closing portions 20, 30.

[0049] Incidentally, in the present invention, engaging means 40 is made up of buttons 41, hook and loop fasteners 42, and hook members 43, but in men's undergarments 1 and 2, buttons 41 and hook members 43 are particularly excellent configurations from the standpoint of how unlikely they are to fall off when closed.

[0050] In particular, in men's underwear 1, the left edge 20a side of the right opening / closing part 20 is configured so that it gradually widens in the left-right direction as it moves downward, and the right edge 30a side of the left opening / closing part 30 is configured so that it gradually widens in the left-right direction as it moves downward, and when the right opening / closing part 20 and the left opening / closing part 30 are configured so that the overlapping part in the left-right direction widens as it moves downward when closed, it is possible to reliably prevent the male genitalia from being exposed through the opening / closing parts 20, 30 when closed, and the crotch area can be reliably held in place by the overlapping part in the left-right direction, improving comfort to wear; however, there is an issue of how difficult it is for the engaging means 40 to fall off when closed.

[0051] In such a case, it is effective to employ the button 41 or the hook member 43, and in the case of the hook member 43, it is particularly effective to employ the hook member 43 which is bent into a U-shape and has a flat shape. The hook member 43 which is bent into a U-shape and has a flat shape is less bulky and can improve the wearing comfort when worn under clothing such as trousers.

[0052] The male hook member 43a of the hook member 43 has a base 43a1, a connecting portion 43a2, and a hooking portion 43a3, the base 43a1 is plate-shaped having a predetermined length, the base connecting portion 43a2 is plate-shaped and intersects with the base 43a1 perpendicularly, and the hooking portion 43a3 has a tip 43a' that is parallel to the base 43a1 and shorter than the base 43a1 for hooking onto the female book member 43b.

[0053] Of course, the present invention is not limited to the above-described embodiment, and various modifications and applications are possible.

[0054] That is, in the men's undergarments 1 and 2 described above, the left edge 20a side of the right opening / closing portion 20 is configured so that its width in the left-right direction gradually increases as it moves downward, and the right edge 30a side of the left opening / closing portion 30 is configured so that its width in the left-right direction gradually increases as it moves downward, and when the right opening / closing portion 20 and the left opening / closing portion 30 are configured so that their overlapping portion in the left-right direction increases as it moves downward when they are closed, but as in the men's undergarments 3 and 4 shown in Figures 13 to 21, the left edge 20a side of the right opening / closing portion 20 and the right edge 30a side of the left opening / closing portion 30 are configured so that they hang down downward, and the required effect is achieved even if the width of the overlapping portion in the left-right direction in the up-down direction of the right opening / closing portion 20 and the left opening / closing portion 30 are approximately equal when they are closed.

[0055] It should be noted that the men's undergarment 3 relating to the modified example is a men's undergarment 3 for right-handed people, and similarly to the above, the right side opening / closing portion 20 and the left side opening / closing portion 30 are configured to overlap when closed so that the left side edge 20a of the right side opening / closing portion 20 is the front side, and the right side edge 30a of the left side opening / closing portion 30 is the rear side.

[0056] Moreover, the men's undergarment 4 relating to the modified example is men's undergarment 4 for left-handed people, and similarly to the above, the right side opening / closing portion 20 and the left side opening / closing portion 30 are configured to overlap when closed so that the right side edge 30a of the left side opening / closing portion 30 is the front side, and the left side edge 20a of the right side opening / closing portion 20 is the rear side.

[0057] Furthermore, although the above-described embodiment discloses men's underwear, the desired effects are also achieved when applied to women's underwear such as women's shorts. [Explanation of symbols]

[0058] 1,2,3,4:Men's underwear 10: Pants body 11: Front waist top 11A: Right front waist top 11A´:Left side 11A´´:Right side 11B:Left front waist top 11B´: Right side 11B´´:Left side 11a: Lower edge 11´:Top end 12: Front body part 12A: Right front section 12A´: Right side 12B: Left front body part 12B´:Left side 12a: Upper edge 12b, 12c: Side edge 12d: Lower edge 12d´: Central part 12´:Middle section 13: Back waist top 13a: Lower edge 14: Back body part 14a: Upper edge 14b, 14c: Side edge 14d: Lower edge 14d´: Central part 15: Leg insertion part 15a: Lower edge 20: Right side opening / closing part 20a: Left edge 20a´: Bottom end 30: Left side opening 30a: Right edge 30a´: Bottom end 40: Engagement means 41: Button 41a: Button body 41b: Buttonhole 42: Velcro 42a: Male hook-and-loop fastener 42b: Female hook and loop fastener 43: Hook member 43a: Male hook member 43a1: Base 43a2: Connection part 43a3: Hook 43a´:Tip 43b: female hook member

Claims

1. An undergarment having a pants body portion, The pants body portion has a front waist top portion, a front body portion, a rear waist top portion, and a rear body portion, The front waist top and the front body part are configured in a left-right central portion as an opening / closing part that can be opened and closed in the left-right direction from at least the middle part in the up-down direction of the front body part to the upper end of the front waist top part.

2. The front waist top portion has a right front waist top portion and a left front waist top portion, The front body portion has a right front body portion and a left front body portion, The opening / closing unit has a right opening / closing unit and a left opening / closing unit, The left side of the right front waist top portion and the right front body portion constitute the right opening and closing portion, The right side of the left side front waist top part and the left side front body part forms the left side opening and closing part, 2. The underwear according to claim 1, characterized in that the right side opening / closing portion opens to the right side and the left side opening / closing portion opens to the left side, and when open, the right side opening / closing portion and the left side opening / closing portion are configured so that the left side edge side of the right side opening / closing portion and the right side edge side of the left side opening / closing portion are separated in the left-right direction from the lower end to the upper end of the vertical middle portion, and when closed, the left side edge side of the right side opening / closing portion and the right side edge side of the left side opening / closing portion are configured to overlap.

3. The left edge of the right opening / closing portion is configured to gradually widen to the left as it goes downward, The right edge of the left opening / closing portion is configured to gradually widen to the right as it goes downward, The undergarment according to claim 2, wherein the right opening / closing part and the left opening / closing part are configured so that the overlapping portion in the left-right direction increases in width as the opening / closing part approaches the bottom.

4. 3. The underwear according to claim 2, wherein a lower end of a left edge of the right opening / closing part and a lower end of a right edge of the left opening / closing part are positioned substantially in the same vertical position.

5. The undergarment according to claim 2, characterized in that the right side opening / closing portion and the left side opening / closing portion are configured to overlap each other when closed such that the right side edge side of the left side opening / closing portion is on the front side and the left side edge side of the right side opening / closing portion is on the rear side.

6. 3. The undergarment according to claim 2, characterized in that the right opening / closing portion and the left opening / closing portion are configured to overlap each other when closed such that the left edge side of the right opening / closing portion is on the front side and the right edge side of the left opening / closing portion is on the rear side.

7. The underwear according to claim 2, characterized in that an engagement means for engaging the left side and the right side is provided on the left side of the right front waist top portion, which is the upper edge of the right side opening / closing portion, and on the right side of the left front waist top portion, which is the upper edge of the left side opening / closing portion.

8. The underwear according to claim 7, wherein the engaging means is provided on the front portion to the right of the center in the left-right direction.

9. The underwear according to claim 7, wherein the engaging means is provided on the front portion on the left side of the center in the left-right direction.

10. 8. The underwear according to claim 7, wherein the engaging means is a button, a hook and loop fastener, or a hook member.

11. 2. The undergarment according to claim 1, wherein at least a portion of the front waist top portion and the rear waist top portion is made of a stretchable fabric.

12. The underwear described in claim 2, characterized in that the left side portion of the right front waist top portion that forms the right opening and closing portion is made of a fabric that is less stretchy than the right side of the right waist top portion, and the right side portion of the left front waist top portion that forms the left side opening and closing portion is made of a fabric that is less stretchy than the left side of the left waist top portion.

13. a left edge side of the right opening portion and a right edge side of the left opening portion are configured to hang down downward, The undergarment according to claim 2, wherein the right opening and the left opening have an overlapping width in the left-right direction in the up-down direction that is approximately equal when the right opening is closed.

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