Self-adaptive underpants

By introducing a Y-shaped elastic reinforcement band and a wave-shaped waistband design into the underwear, combined with a breathable outer layer and stepped elastic zones, the problem of insufficient crotch support and poor stability in traditional underwear is solved, achieving greater comfort and stability.

CN224192978UActive Publication Date: 2026-05-05SICHUAN EUPON ENTERPRISE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN EUPON ENTERPRISE CO LTD
Filing Date
2025-04-28
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional men's underwear suffers from problems such as insufficient support in the crotch area, slippage at the lower back, asymmetry, leg compression, and poor comfort and stability due to fabric layering.

Method used

Featuring a Y-shaped elastic reinforcement band and a wavy waistband design, combined with a breathable outer layer and stepped elastic zones, these underwear are heat-pressed and sewn together to form an adaptive structure that enhances crotch support and breathability, while optimizing the waist and leg structure to reduce friction and prevent slippage.

Benefits of technology

It improves comfort and stability during exercise, enhances groin support, reduces friction and slippage, and improves breathability and anti-slip properties.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of underpants, and discloses self-adaptive underpants which are characterized by comprising an underpants body formed by sewing and connecting a front piece and a rear piece, and the front piece comprises a front crotch piece; the Y-shaped elastic reinforcing band is arranged on the inner side of the front crotch piece in an inverted mode, the top end of the elastic reinforcing band is fixedly connected to the middle of the front crotch piece, and the two forked ends of the elastic reinforcing band extend to the joints of the rear piece and the leg girths on the two sides respectively and are fixedly connected with the joints of the rear piece and the leg girths on the two sides; the elastic reinforcing band comprises a Y-shaped core layer and a breathable outer layer wrapping the outer side of the core layer. The Y-shaped elastic reinforcing band is arranged on the front crotch piece of the underpants, the elastic reinforcing band of the structure can play a matched supporting role and elasticity for the crotch when a wearer moves, borne pressure can be dispersed to the two sides, the comfort of the wearer in the moving process is improved, the core layer is wrapped by the breathable outer layer, and therefore the elastic reinforcing band is not prone to falling off when the wearer moves. The elastic reinforcing band has good air permeability while being used for elastic supporting.
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Description

Technical Field

[0001] This utility model belongs to the field of underwear technology, specifically relating to an adaptive underwear. Background Technology

[0002] The following problems exist with men's underwear currently on the market:

[0003] 1. Insufficient crotch support: Traditional underwear only uses fabric for support in the crotch area, which is not very supportive when the wearer is moving, resulting in poor comfort.

[0004] 1. Back waist slips: Traditional underwear has a straight back waist that lacks ergonomic design. When the wearer sits down, the back waist will slip due to insufficient support for the hip curve, resulting in poor stability when wearing it.

[0005] 2. Asymmetry: The method of connecting the cut pieces is simple, and deviations are easily caused after the left and right pieces are sewn together;

[0006] 3. Leg compression: The leg opening is straight and not optimized for the movement trajectory of the groin, resulting in friction and marks;

[0007] 4. Fabric layering: Traditional single-layer fabrics lack elastic partitioning design and are prone to deformation during movement. Utility Model Content

[0008] In view of this, the purpose of this utility model is to provide an adaptive underwear to solve the problem of poor crotch support in existing men's underwear.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An adaptive underwear, characterized in that it comprises:

[0011] A pair of trousers formed by sewing together a front piece and a back piece, wherein the front piece includes a crotch panel;

[0012] An inverted Y-shaped elastic reinforcing band is placed inside the front crotch piece. The top end of the elastic reinforcing band is connected and fixed to the middle of the front crotch piece, and the two forked ends of the elastic reinforcing band extend to the seam between the back piece and the two side leg circumferences and are connected and fixed.

[0013] The elastic reinforcing strip includes a Y-shaped core layer and a breathable outer layer covering the outside of the core layer.

[0014] In one possible implementation, the core layer is made of TPU material, and the breathable outer layer is made of woven mesh fabric.

[0015] In one possible implementation, the top end of the elastic reinforcing band is connected to the crotch piece by heat pressing, and the bifurcation end is sewn to the seam of the leg circumference.

[0016] In a possible implementation, a waist piece connected to the front piece, the back piece, and the crotch piece is also included, the waist piece including a rear waist portion, the rear waist portion having a wavy structure that is high in the middle and low on both sides.

[0017] In one possible implementation, the lower back includes a hip-covering section and two smoothly transitioning connecting sections at both ends of the hip-covering section. Both the connecting sections and the hip-covering section are arc-shaped structures, with the hip-covering section being higher than the connecting sections.

[0018] In one possible implementation, the waist piece is provided with an elastic band, which includes a plurality of first elastic zones and second elastic zones arranged from top to bottom, and the first elastic zones and second elastic zones have different elasticity configurations.

[0019] In a possible implementation, the elastic band includes an inner elastic layer and an outer elastic layer arranged from the inside out. The elongation rate of the inner elastic layer is higher than that of the outer elastic layer, and the width of the outer elastic layer is greater than that of the inner elastic layer. The area of ​​the outer elastic layer that is wider than the inner elastic layer in the longitudinal direction is a first elastic zone, and the area of ​​the outer elastic layer that overlaps with the inner elastic layer in the longitudinal direction is a second elastic zone, so as to form a stepped anti-slip structure.

[0020] In a possible implementation, the front piece further includes a left front piece and a right front piece, and positioning fabric pieces are provided at the connection between the left front piece and the back piece and at the connection between the right front piece and the back piece, and the positioning fabric pieces fix the sewing start point at the two connection points.

[0021] In one possible implementation, the trousers have a wavy hem circumferentially arranged at the leg opening.

[0022] In one possible implementation, the trousers have mounting channels sewn along the height of the trousers at the side seam where the front and back pieces connect. An elastic strip is provided in the mounting channel and fixed within the mounting channel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The adaptive underwear of this invention features a Y-shaped elastic reinforcing band in the front crotch area. This elastic reinforcing band provides appropriate support and elasticity to the crotch area during wearer's movement, distributing the pressure to both sides and improving the wearer's comfort during exercise. Furthermore, the elastic reinforcing band provides good breathability while offering elastic support by wrapping the core layer with a breathable outer layer.

[0025] Furthermore, by setting the back waistband of the waistband to a wavy structure that is high in the middle and low on both sides, it can have a larger area to cover the buttocks, and can play a certain role in preventing slipping by matching the structure of the human buttocks. In addition, by setting the wavy structure at the leg openings of the pants, it can conform to the movement trajectory of the upper thigh and reduce friction.

[0026] Meanwhile, the stepped elastic zones on the elastic band further enhance the anti-slip effect, making it more stable to wear. Attached Figure Description

[0027] Figure 1 A front view of an adaptive pair of underwear;

[0028] Figure 2 A rear view of an adaptive pair of underwear;

[0029] Figure 3 A schematic diagram of the elastic band's elasticity zones in an adaptive underwear design;

[0030] Figure 4 This is a cross-sectional view of the elastic band of an adaptive underwear.

[0031] In the diagram: 1-Pants body; 11-Left front panel; 12-Right front panel; 13-Front crotch panel; 14-Back waistband; 141-Buttock covering section; 142-Connecting section; 15-Waist panel; 16-Wave hem; 17-Back panel; 2-Elastic reinforcement band; 3-Positioning fabric piece; 4-Invisible side seam seam; 5-Elastic band; 51-Second elastic zone; 52-First elastic zone; 53-Inner elastic layer; 54-Outer elastic layer. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0033] Please refer to Figure 1-4 As shown, an embodiment of this application provides an adaptive underwear, comprising: a pant body 1 formed by sewing together a front piece and a back piece 17, the front piece including a crotch piece 13; an inverted Y-shaped elastic reinforcing band 2 disposed inside the crotch piece 13, the top end of the elastic reinforcing band 2 being connected and fixed to the middle of the crotch piece 13, and the two forked ends of the elastic reinforcing band 2 extending to the seams of the back piece 17 and the two sides of the leg openings and being connected and fixed; wherein, the elastic reinforcing band includes a Y-shaped core layer (not shown in the figure) and a breathable outer layer (not shown in the figure) covering the outside of the core layer.

[0034] The elastic reinforcing band 2 has a Y-shaped structure, which is inverted and installed inside the front crotch piece 13. It is fixed to the middle of the front crotch piece 13 via a top connection, and its two forked ends extend to the seams of the rear piece 17 and the side leg circumferences, where they are also fixed. This structure provides better elastic support for the crotch area and can distribute the pressure from the load or unstable pressure generated during movement to both sides, thus achieving better support and adaptability during movement. The elastic reinforcing band 2 has a double-layer structure, consisting of an inner core layer and an outer breathable outer layer. This allows for both support and breathability, reducing bacterial growth on the elastic reinforcing band 2.

[0035] Through the above technical solution, a Y-shaped elastic reinforcing band 2 is provided in the front crotch piece 13 of the underwear. The elastic reinforcing band 2 of this structure can provide appropriate support and elasticity for the crotch area when the wearer moves, and can distribute the pressure on both sides to improve the comfort of the wearer during exercise. Furthermore, through the breathable outer layer wrapping the core layer, the elastic reinforcing band 2 can have good breathability while providing elastic support.

[0036] In one embodiment, the core layer is made of TPU material, and the breathable outer layer is made of woven mesh fabric.

[0037] The core layer of TPU material has good elasticity, and when combined with the woven mesh fabric as the breathable outer layer, it can achieve good breathability, making the wearer more comfortable.

[0038] Furthermore, to better connect and fix the elastic reinforcing band 2, the top end of the elastic reinforcing band 2 is connected to the front crotch piece 13 by heat pressing, and the bifurcation end is sewn to the seam of the leg circumference. Heat fusion connection allows for seamless connection with the surface layer of the front crotch piece 13, and the sewn connection of the bifurcation end also ensures good fixation.

[0039] In the specific implementation process, the top of the Y-shaped elastic reinforcing band 2 is fixed to the center of the front crotch piece 13, and the bifurcated end extends to the seam between the back piece 17 and the leg circumference. The top is hot-pressed with the cotton layer of the front crotch piece 13 using a hot press to form a seamless bonding connection. The bifurcated end is embedded in the seam between the leg circumference and the front and back pieces 17, and reinforced with a four-needle six-thread overlocking process. The core layer uses a 0.5mm thick TPU strip (tensile strength ≥20MPa), and the breathable outer layer uses a breathable polyester / spandex blended mesh fabric.

[0040] In the embodiments of this application, a waist piece 15 connected to the front piece, the rear piece 17 and the crotch piece is also included. The waist piece 15 includes a rear waist portion 14, which has a wavy structure that is high in the middle and low on both sides.

[0041] By setting the back waist 14 of the waist piece 15 to a wave-like structure that is high in the middle and low on both sides, it can have a larger area for covering the buttocks, and can play a certain anti-slip role in combination with the structure of the human buttocks.

[0042] Based on this, and to better conform to ergonomic design, the lower back 14 includes a hip-covering section 141 and two smoothly transitioning connecting sections 142 at both ends of the hip-covering section 141. Both the connecting sections 142 and the hip-covering section 141 are arc-shaped structures, with the hip-covering section 141 being higher than the connecting sections. This results in an S-shaped lower back 14. By adopting an S-shaped arc edge design, the curvature and radius match the curve of the human coccyx, increasing the hip-covering area. Furthermore, the larger hip-covering area also provides a certain degree of anti-slip effect when worn.

[0043] Furthermore, the waist piece 15 is provided with an elastic band 5, which includes a plurality of first elastic zones 52 and second elastic zones 51 arranged from top to bottom, and the first elastic zones 52 and the second elastic zones have different elasticity configurations.

[0044] By setting a first elastic zone 52 and a second elastic zone 51 with different elastic forces on the elastic band 5, a pressure gradient in the longitudinal direction can be formed, which can better achieve anti-slip.

[0045] In a preferred embodiment of the elastic band 5, the elastic band 5 includes an inner elastic layer 53 and an outer elastic layer 54 arranged from the inside to the outside. The elongation rate of the inner elastic layer 53 is higher than that of the outer elastic layer 54, and the width of the outer elastic layer 54 is greater than that of the inner elastic layer 53. The area of ​​the outer elastic layer 54 that is wider than the inner elastic layer 53 in the longitudinal direction is a first elastic zone 52, and the area of ​​the outer elastic layer 54 that overlaps with the inner elastic layer 53 in the longitudinal direction is a second elastic zone 51, so as to form a stepped anti-slip structure.

[0046] The elastic band 5 has a double-layer composite structure, with its inner elastic layer 53 and outer elastic layer 54 connected by ultrasonic hot-press welding. By setting the elastic band 5 into an inner elastic layer 53 and an outer elastic layer 54 with different widths, it is easy to form a stepped elastic zone, and thus the pressure gradient can prevent slippage.

[0047] In practical implementation, the inner elastic layer 53 uses a high-elasticity spandex tape (elongation ≥ 90%), accounting for 60% of the total width of the elastic band 5, while the outer elastic layer 54 uses a low-elasticity polyester woven tape (elongation ≤ 80%), accounting for 40% of the width. Thus, the elongation of the elastic band 5 is dominated by the material properties (spandex / polyester ratio), with the high-elasticity material of the inner elastic layer 53 providing longitudinal stretch, and the low-elasticity material of the outer layer restricting lateral expansion. The elastic band 5 is preferably positioned within the channel formed by the waist piece 15.

[0048] Because the front piece and the back piece 17 are connected by a single piece, deviations are likely to occur after the left front piece 11 and the right front piece 12 of the front piece are sewn to the back piece 17. Furthermore, the front piece also includes a left front piece 11 and a right front piece 12. Positioning fabric pieces 3 are provided at the connection between the left front piece 11 and the back piece 17 and at the connection between the right front piece 12 and the back piece 17. The positioning fabric pieces 3 fix the sewing start point of the two connection points.

[0049] In this way, by adding a triangular positioning fabric piece 3, the starting point of the sewing can be fixed by heat pressing and bonding, ensuring that the deviation of the left and right seams is ≤0.3cm.

[0050] To improve the adaptability of the trousers 1 to movement on the legs, the trousers 1 have a wavy hem 16 circumferentially arranged at the leg opening. The wavy hem 16 adopts a wavy structure (wave peak height 1.5cm, wavelength 4cm) to conform to the movement trajectory of the upper thigh and reduce friction.

[0051] Specifically, the wavy hem 16 has a double-layer composite structure, with the outer layer being plain cotton and the inner layer being diamond-patterned quick-drying fiber, forming breathable channels.

[0052] In addition, the pant body 1 has installation channels sewn along the height direction of the pant body 1 at the side seam where the front and back pieces 17 connect. Elastic strips are installed within these installation channels and fixed in place. These elastic strips serve as invisible side seam seam reinforcement 4. By embedding flexible TPU strips (0.5mm in diameter) inside the side seam, longitudinal tensile recovery is enhanced, reducing the deformation rate of the underwear. The installation channel is constructed by pre-sewing a 1cm wide channel inside the side seam panel, then inserting a 0.5mm diameter TPU strip into the channel, leaving 5cm free ends at both ends. Finally, a heat press is used to locally melt the fabric at the channel entrance to fix the position of the elastic strip.

[0053] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An adaptive underwear, characterized in that, include: The trouser body (1) is formed by sewing together a front piece and a back piece (17), the front piece including a crotch piece (13); An inverted Y-shaped elastic reinforcing band (2) is placed inside the front crotch piece (13). The top end of the elastic reinforcing band (2) is connected and fixed to the middle of the front crotch piece (13). The two forked ends of the elastic reinforcing band (2) extend to the seam between the rear piece (17) and the two side leg circumferences and are connected and fixed. The elastic reinforcing strip (2) includes a Y-shaped core layer and a breathable outer layer covering the outside of the core layer.

2. The adaptive underwear as described in claim 1, characterized in that, The core layer is made of TPU material, and the breathable outer layer is made of woven mesh fabric.

3. The adaptive underwear as described in claim 1, characterized in that, The top end of the elastic reinforcing band (2) is connected to the front crotch piece (13) by heat pressing, and the bifurcation end is sewn and fixed at the seam of the leg circumference.

4. The adaptive underwear as described in claim 1, characterized in that, It also includes a waist piece (15) connected to the front piece, the back piece (17) and the crotch piece (13), the waist piece (15) including a back waist part (14), the back waist part (14) having a wave-like structure that is high in the middle and low on both sides.

5. The adaptive underwear as described in claim 4, characterized in that, The lower back (14) includes a hip-covering section (141) and two smoothly transitioning connecting sections (142) at both ends of the hip-covering section (141). Both the connecting sections (142) and the hip-covering section (141) are arc-shaped structures, and the hip-covering section (141) is higher than the connecting sections.

6. The adaptive underwear as described in claim 4, characterized in that, The waist piece (15) is provided with an elastic band (5), which includes several first elastic zones (52) and second elastic zones (51) arranged from top to bottom, and the first elastic zones (52) and second elastic zones have different elasticity configurations.

7. The adaptive underwear as described in claim 6, characterized in that, The elastic band (5) includes an inner elastic layer (53) and an outer elastic layer (54) arranged from the inside to the outside. The elongation of the inner elastic layer (53) is higher than that of the outer elastic layer (54), and the width of the outer elastic layer (54) is greater than that of the inner elastic layer (53). The area of ​​the outer elastic layer (54) that is wider than the inner elastic layer (53) in the longitudinal direction is the first elastic zone (52), and the area of ​​the outer elastic layer (54) that overlaps with the inner elastic layer (53) in the longitudinal direction is the second elastic zone (51), so as to form a stepped anti-slip structure.

8. The adaptive underwear as described in claim 1, characterized in that, The front piece also includes a left front piece (11) and a right front piece (12). Positioning fabric pieces (3) are provided at the connection between the left front piece (11) and the back piece (17) and at the connection between the right front piece (12) and the back piece (17). The positioning fabric pieces (3) fix the sewing start point of the two connection points.

9. The adaptive underwear as described in claim 1, characterized in that, The trousers (1) have a wavy hem (16) circumferentially arranged at the leg opening.

10. The adaptive underwear as described in claim 1, characterized in that, The trouser body (1) has an installation channel sewn at the side seam where the front piece and the back piece (17) are connected. The installation channel is provided with an elastic strip, which is fixed in the installation channel.