Lower hem thermal insulation component for long clothes
By designing insulation layers, joints, and hem insulation components for movement, the problem of heat loss and restricted leg movement at the hem of long garments has been solved, achieving a balance between warmth and mobility. It is compatible with various styles of long garments, improving wearing comfort and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 王付鹏
- Filing Date
- 2026-03-11
- Publication Date
- 2026-05-19
AI Technical Summary
Long garments are prone to heat loss at the hem and restrict leg movement. Existing technologies lack effective insulation solutions, especially regarding their compatibility with slit structures.
Design a hem insulation component that includes an insulation layer, a joint, retractable leg passage holes, and a movable part. Through the retractable structure and the movable part, it can flexibly adapt to the closure and slit of the hem, providing room for movement.
It effectively prevents air from getting in and causing heat loss at the hem, while ensuring freedom of movement for the legs. It is compatible with a variety of long garment styles, improving the ease of putting on and taking off clothes and enhancing wearing comfort.
Smart Images
Figure CN122056435A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of clothing technology, specifically to a heat-insulating component for the hem of long garments, particularly for the hem of long coats, long down jackets, and other garments, to improve the warmth retention and wearing comfort of the hem area. Background Technology
[0002] Long garments (such as long down jackets and long coats) are favored by consumers for their excellent warmth and streamlined appearance. However, existing long garments present the following technical problems in actual wear:
[0003] 1. The hem area is prone to heat loss: The hem of long clothes is usually loose. When walking, the hem swings and creates air convection, causing cold air to enter from the hem, resulting in heat loss from the legs and affecting the overall warmth.
[0004] 2. Restricted leg movement: If the hem is designed to be too tight to improve warmth, it will restrict the wearer's range of motion, affecting normal walking, running, climbing stairs and other movements, causing discomfort.
[0005] 3. Issues with the integration of slit structures: Some long garments feature slits at the hem (such as side slits or back slits) to increase ease of movement. However, slits often become major sources of airflow, and current technology lacks an effective insulation solution that can work seamlessly with slit structures.
[0006] Therefore, there is an urgent need in this field for a heat insulation component that can both ensure the freedom of leg movement and effectively prevent air intake and heat loss in the hem. Summary of the Invention
[0007] The purpose of this invention is to provide a heat insulation component for the hem of long garments, so as to solve the technical problems of wind entry and heat loss and restricted leg movement in the hem of long garments in the prior art.
[0008] To achieve the above objectives, the present invention provides the following technical solution: a heat insulation component for the hem of a long garment, comprising: a heat insulation layer; a connecting portion disposed around the periphery of the heat insulation layer for connecting the heat insulation component to the inner side of the hem of the long garment, and causing the heat insulation layer to form a closed-bottom annular heat insulation space around the wearer's legs inside the hem of the garment after connection; a left leg passage hole and a right leg passage hole formed on the heat insulation layer, the edges of the left leg passage hole and the right leg passage hole having a retractable structure; and at least one movable portion disposed on the heat insulation layer, the movable portion being an adjustable structure for releasing the tension of the heat insulation layer when the legs move.
[0009] Preferably, when standing and wearing the garment, the highest point of the joint is higher than the lowest bottom surface of the insulation layer. This structural design prevents the insulation layer from piling up on the instep when standing, ensuring that the insulation layer can be fully stretched and expanded to effectively keep the legs warm.
[0010] Preferably, the movable part is an expandable opening configured to work in conjunction with the slit at the hem of a long garment, expanding as the slit expands and closing as the slit closes. This design allows the insulation component to perfectly fit long garments with slits, opening synchronously when the slit opens to avoid restriction, while also preventing heat loss and air ingress.
[0011] Preferably, the movable part is a normally closed opening that closes naturally. This design is suitable for long garments without slits, where the opening remains closed naturally to achieve insulation.
[0012] Preferably, the movable part is located on the left edge, right edge, front edge, or rear edge of the insulation layer. By setting openings at different locations, it can adapt to the slit positions of different styles of clothing or meet the activity needs in different scenarios.
[0013] Preferably, the thermal insulation layer area between the left leg through hole and the right leg through hole has an openable structure for opening to facilitate putting on and taking off the thermal insulation component. This design solves the problem of ease of putting on and taking off the thermal insulation component itself—when it is necessary to put on or take off the component, the middle area can be opened, eliminating the need to laboriously pass through the leg holes.
[0014] Preferably, the insulation layer area between the left leg passage hole and the right leg passage hole is arc-shaped to provide room for leg movement when worn. The "arc shape" means that when the insulation component is in a hanging or wearing state, the insulation layer material between the left leg passage hole and the right leg passage hole forms an upwardly convex or downwardly drooping arc-shaped profile, rather than a flat state tightly attached to the leg, thereby providing redundant space for leg movement.
[0015] Preferably, the insulation layer is a flexible sheet material. This basic material characteristic allows the insulation layer to deform in accordance with human body movements, ensuring wearing comfort.
[0016] More preferably, the insulation layer has a corrugated folded structure. The corrugated structure can provide a larger coverage area when extended and achieve compact stacking when contracted, enhancing the deformation adaptability of the insulation layer.
[0017] More preferably, the insulation layer has a Miura folding structure. Miura folding is a folding method that can efficiently switch between "unfolded" and "folded" states. Applying it to the insulation layer allows for smooth expansion and contraction during leg movement while maintaining structural stability.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] 1. Thermal insulation protection: The lower hem area is completely isolated by a thermal insulation layer, and the retractable structure at the edge of the leg holes ensures a snug fit around the legs, effectively preventing cold air from entering.
[0020] 2. Balancing activity and warmth: The movable section can be unfolded to free up space when activity is needed (such as walking or lifting legs), solving the technical contradiction of not being able to achieve both "warmth" and "activity" in traditional designs.
[0021] 3. Adaptable to various clothing styles: By setting different types of movable parts (expandable and normally closed) and multiple positions (left, right, front, back), this invention can perfectly adapt to various long clothes with or without slits.
[0022] 4. Easy to put on and take off: By setting an openable structure between the leg holes, the problem of putting on and taking off the insulation components themselves is solved, improving the user experience.
[0023] 5. Ergonomic design: The design of the joint high point being higher than the bottom surface of the insulation layer, and the arched design of the area between the leg holes, ensures that the components conform to the natural shape of the human body when worn, making them both beautiful and comfortable. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of the lower hem insulation component in Embodiment 1 of the present invention.
[0025] Figure 2 This is a schematic diagram of the structure of the lower hem heat insulation component in Embodiment 2 of the present invention.
[0026] Figure 3 This is a schematic diagram of the structure of the folded thermal insulation layer in Embodiment 3 of the present invention.
[0027] In the diagram: 1-Joint; 2-Insulation layer; 3-Left leg passage hole; 4-Right leg passage hole; 5-Moving part; 6-Openable and closable structure; 7-Retractable structure. Detailed Implementation
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0029] It should be noted that the "movable part" mentioned in this invention refers to a structure or material arrangement that allows the insulation layer to release tension and adapt to leg movement during wear, including but not limited to: unfoldable openings, normally closed openings, physically separable structures (such as magnetic or Velcro), elastic material structures (such as elastic material areas), and foldable structures (such as opening and closing through folding design). Regardless of the method used, as long as the function of releasing the tension of the insulation layer during leg movement is achieved, it falls within the protection scope of the "movable part" of this invention.
[0030] Example 1: Implementation of the basic structure and its linkage with the slit
[0031] like Figure 1 As shown, this embodiment provides a heat-insulating component for the hem of a long garment. The component includes:
[0032] Insulation layer (2): Made of flexible insulating material, such as composite insulating cotton or elastic fleece. Connecting part (1): Located around the perimeter of the insulation layer (2), used to connect the entire component to the inner hem of a long garment. The connecting part (1) can be achieved using various methods such as sewing thread, Velcro, zipper, or magnetic fastener. In this embodiment, the connecting part (1) is a Velcro fastener located along the upper edge of the insulation layer (2), which is attached to the Velcro fastener on the inner lining of the garment hem.
[0033] Left leg through hole (3) and right leg through hole (4): formed on the insulation layer (2), with positions corresponding to the wearer's left and right legs, respectively. The two holes can be circular or elliptical in shape to fit the cross-section of the human leg.
[0034] Retractable structure (7): Located at the edges of the left leg passage hole (3) and the right leg passage hole (4). In this embodiment, the retractable structure is an elastic band (such as an elastic band) sewn onto the edge of the hole, giving the hole a certain retractable ability to fit legs of different thicknesses and prevent cold air from entering from the edge of the leg hole. In other embodiments, the retractable structure can also be a magnetic band, Velcro adjustment band, etc.
[0035] Movable section (5): Located on the insulation layer (2). In this embodiment, the movable section (5) is an expandable opening, specifically a foldable structure that can be opened and closed. The structure is a double-triangular design, with each triangle being a folded corrugation. The two sides of the double-triangle are connected to each other to form a folding axis; the two bottom sides are respectively connected to the main body of the insulation layer (2); the two high sides are connected to the inside of the hem of the long down jacket, corresponding to the slit position of the garment. The dotted line indicates the closed state of the movable section (5).
[0036] Arc-shaped area implementation: The thermal insulation layer area between the left leg through hole (3) and the right leg through hole (4) is naturally drooping arc-shaped, which can also be achieved by material cutting or hot pressing to provide more room for movement of the legs when wearing.
[0037] Installation method: as follows Figure 1 As shown, the heat insulation component of the present invention is attached to the inside of the hem of a long garment using Velcro via the joint (1). After installation, the wearer's legs pass through the left leg through hole (3) and the right leg through hole (4) respectively. The heat insulation layer (2) is inside the hem of the garment, surrounding the wearer's legs to form a bottom-closed annular heat insulation space, effectively blocking air convection at the hem.
[0038] Working principle: such as Figure 1 As shown, the movable part (5) in this embodiment corresponds to the left and right slits on the hem of the long garment. When the slits are closed, the movable part (5) is also closed (as shown by the dotted line in the figure), and the insulation layer (2) forms a complete windproof barrier. When the wearer needs to move their legs significantly and opens the slits, the double-triangular structure of the movable part (5) unfolds accordingly, increasing the angle between the bottom and top sides, releasing the tension of the insulation layer (2), and avoiding restriction of leg movement. It should be emphasized that in the unfolded state, the waist of the double-triangular structure remains connected, and the insulation layer (2) remains a continuous structure. Therefore, the insulation function is maintained throughout, and no gaps or seams are created due to the unfolding. When the slits are closed again, the movable part (5) also closes, restoring the double-triangular structure to its original closed state.
[0039] Example 2: Implementation of a normally closed moving part
[0040] This embodiment provides an implementation method suitable for long garments without slits.
[0041] The difference from Embodiment 1 is that the movable part (5) in this embodiment is a normally closed opening, which remains closed in its natural state. Specifically, it can be implemented by: providing elastic fabric at the movable part, using the natural contraction characteristics of the elastic material to keep the movable part closed without external force; or providing a magnetic strip at the movable part, so that it closes when there is no external force, but can be pulled open or stretched when subjected to a certain pulling force, providing leg movement space.
[0042] Working principle: When the wearer stands or walks normally, the movable part (5) remains closed, and the insulation layer (2) forms a complete windproof barrier. When the wearer performs large leg movements, the legs exert a tensile force on the insulation layer, and the movable part (5) is stretched or opened, releasing the movement space. After the movement is completed, the movable part automatically returns to the closed state by relying on the elastic recoil force or the reset characteristics of the magnetic structure.
[0043] Example 3: Optimized design of the area between leg holes
[0044] Based on Example 1, this embodiment optimizes the design of the insulation layer area between the left leg passage hole (3) and the right leg passage hole (4). The remaining structure is similar to that of Example 1 and will not be described again.
[0045] (a) Implementation method of the openable and closable structure
[0046] like Figure 2 As shown, an openable structure (6) is provided in the insulation layer area between the left leg opening (3) and the right leg opening (4). The openable structure (6) is a herringbone Velcro or magnetic strip, which connects the shaded area between the left leg opening (3) and the right leg opening (4) in the figure. One end is connected to the vicinity of the main placket zipper at the front of the down jacket, and the other two ends are connected to the edges of the left leg opening (3) and the right leg opening (4) respectively. With this design, opening the main placket zipper will simultaneously open the openable structure (6), and open the left and right leg openings as well, making it easy to put on and take off the jacket.
[0047] (II) Implementation method for the arc-shaped region
[0048] like Figure 2 As shown, the joint (1) between the front placket and the corresponding back center line is positioned higher than the insulation layer (2) and the openable structure (6). This height difference causes the joint (1) to exert a tension on the insulation layer, causing the insulation layer area between the left leg passage hole (3) and the right leg passage hole (4) to form an upward arched shape due to the tension. This arch provides additional space for movement between the two legs. When the wearer walks, the legs swing back and forth, and the arched area can deform with the movement, providing ample space for movement. This arched design works in conjunction with the overall ring structure of the insulation layer, ensuring free leg movement while maintaining the integrity of the closed ring insulation space at the bottom.
[0049] (iii) The height relationship between the highest point of the joint and the bottom surface of the insulation layer
[0050] This embodiment provides a detailed description of the height relationship described in claim 2. (Refer to...) Figure 2 In a standing position, the upper edge of the joint (1) (i.e., the connection point with the hem of the garment) is denoted as point A in the vertical direction, and the lowest point of the insulation layer (2) hanging down naturally is denoted as point B in the vertical direction. In this embodiment, point A is higher than point B to provide more room for the legs to move when wearing the garment. This height relationship ensures that the insulation layer (2) is in a naturally relaxed hanging state when standing, and will not pile up on the instep or calf, forming an effective insulation barrier; on the other hand, it avoids the bulkiness and inconvenience caused by material accumulation.
[0051] Example 4: Implementation of Corrugated and Miura Folded Insulation Layers
[0052] This embodiment provides two preferred folding structures for the insulation layer (2), both of which can be used in conjunction with Embodiment 1 or 2.
[0053] (a) Corrugated folding structure
[0054] like Figure 3 As shown, the insulation layer (2) can adopt a corrugated folded structure, that is, the material is repeatedly folded in a wave-like shape. In this embodiment, the size of each corrugated unit is a square area with a side length of about 5 cm, which is folded to form a wave shape. The extension direction of the corrugation is preferably perpendicular to the direction of leg movement (front and back direction).
[0055] (ii) Miura folding structure
[0056] like Figure 3 As shown, the insulation layer (2) can also adopt the Miura folding structure. The Miura folding is a classic origami structure, characterized by the ability to smoothly unfold the whole in two dimensions by stretching in one direction. In this embodiment, each Miura folding unit is a parallelogram area with a side length of about 5 cm, and multiple units are arranged to form the insulation layer (2).
[0057] Technical Effects: Both of the above folding structures provide the insulation layer (2) with good elasticity. When the legs move forward, the folding structure is stretched out, providing a larger coverage area; when the legs return to an upright position, the folding structure naturally retracts, maintaining a compact shape. This structure allows the insulation layer to use thicker insulating materials (such as high-loft down cotton, composite insulating cotton, etc.), while ensuring flexibility of movement through the folding structure, achieving a balance between "thick materials + high flexibility". Among them, the Miura folding structure has bidirectional stretching characteristics, which can better adapt to the complex three-dimensional movements of the legs.
[0058] Industrial applicability
[0059] This invention provides a heat-insulating component for the hem of long garments. It features a simple structure, controllable cost, and ease of manufacturing, making it widely applicable in the production of various long garments. This component can be integrated into the garment production process as a part of the garment, or it can be manufactured as a standalone accessory for consumers to purchase and install on their existing clothing. Therefore, this invention possesses excellent industrial applicability and market potential.
[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A heat-insulating component for the hem of long garments, characterized in that, include: An insulating layer; a connecting part disposed around the periphery of the insulating layer for connecting the insulating component to the inside of the hem of a long garment, and so that the insulating layer, after connection, forms a closed-off annular insulating space around the wearer's legs inside the hem of the garment; a left leg passage hole and a right leg passage hole formed on the insulating layer, the edges of the left leg passage hole and the right leg passage hole having a retractable structure; and at least one movable part disposed on the insulating layer, the movable part being an adjustable structure for releasing the tension of the insulating layer when the legs move.
2. The thermal insulation component for long garments according to claim 1, characterized in that, When the garment is worn standing up, the highest point of the joint is higher than the lowest bottom surface of the insulation layer.
3. The thermal insulation component for long garments according to claim 1, characterized in that, The movable part is an expandable opening, which is configured to be linked with the slit at the hem of the long garment, expanding as the slit expands and closing as the slit closes.
4. The thermal insulation component for long garments according to claim 1, characterized in that, The movable part is a normally closed opening, which closes under natural conditions.
5. The thermal insulation component for long garments according to claim 1, characterized in that, The movable part is located on the left edge, right edge, front edge, or rear edge of the insulation layer.
6. The thermal insulation component for long garments according to claim 1, characterized in that, The thermal insulation layer area between the left leg passage hole and the right leg passage hole is provided with an openable structure for opening to facilitate putting on and taking off the thermal insulation component.
7. The thermal insulation component for long garments according to claim 1 or 6, characterized in that, The thermal insulation layer area between the left leg opening and the right leg opening is arc-shaped to provide room for the legs to move when worn.
8. The thermal insulation component for long garments according to claim 1, characterized in that, The insulation layer is a flexible sheet material.
9. The thermal insulation component for long garments according to claim 8, characterized in that, The insulation layer has a corrugated folded structure.
10. The thermal insulation component for long garments according to claim 8, characterized in that, The insulation layer has a Miura folded structure.