Trousers convenient for adjusting tightness of trouser waist

Abstract

The utility model discloses a pair of trousers convenient for adjusting the tightness of a trouser waist, which comprises a waistband, and further comprises a pull rope which is arranged in the waistband in a penetrating manner and comprises a first tightening section, a connecting section and a second tightening section; the first tightening section is in the shape of a belt with a preset width in the width direction of the waistband, the second tightening section is in the shape of a thin rope, and the two ends, in the length direction of the waistband, of the connecting section are connected with the first tightening section and the second tightening section respectively. The rotary buckle is fixedly arranged on the waistband and is connected with the second tightening section of the pull rope so as to tighten or loosen the pull rope through rotary self-locking; the end, away from the connecting section, of the first tightening section in the pull rope is connected to the waistband, or the pull rope surrounds the waistband and is connected to the rotary buckle through the two second tightening sections located at the two ends of the pull rope in the length direction. The waist tightness adjusting mode of the trousers is attractive, and the trousers are convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of trousers technology, specifically to a type of trousers with an adjustable waistband. Background Technology

[0002] Pants waistbands can be divided into adjustable and non-adjustable types. Adjustable waistbands typically have a drawstring inside the waistband, which is tightened to adjust the tightness. However, this drawstring adjustment method is not aesthetically pleasing, is only suitable for athletic pants, and requires untying and re-tying the drawstring, making it inconvenient. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a pair of pants with an adjustable waistband that is aesthetically pleasing and easy to operate.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A pair of trousers with an adjustable waistband, comprising a waistband, and further comprising: a drawstring, which is threaded inside the waistband and includes a first tightening section, a connecting section, and a second tightening section; the first tightening section is a strip with a preset width in the width direction of the waistband, the second tightening section is a thin rope, and the connecting section connects the first tightening section and the second tightening section at both ends in the length direction of the waistband; and a snap fastener, which is fixed to the waistband and connected to the second tightening section of the drawstring to tighten or loosen the drawstring by rotating and self-locking; one end of the first tightening section of the drawstring away from the connecting section is connected to the waistband, or the drawstring wraps around the waistband and is connected to the snap fastener through the two second tightening sections located at both ends in the length direction of the drawstring.

[0006] Technical Solution 2 based on Technical Solution 1: The first tightening section includes multiple ropes arranged along the width direction of the waist.

[0007] Technical Solution 3 based on Technical Solution 2: The number of ropes in the first tightening section is 3 to 8, and each rope is arranged at a fixed distance along the width direction of the waist head.

[0008] Technical Solution 4 based on Technical Solution 1: The first tightening section is a rope that is flattened in the width direction of the waistband and has a preset width.

[0009] Technical Solution 5 based on Technical Solution 1: The connecting segment is a rope strip that is flattened in the width direction of the waist head and has a preset width, and it extends in the length direction of the waist head.

[0010] Technical Solution Six based on Technical Solution One: The pull rope includes two sets, each set of pull ropes includes a first tightening section, a connecting section and a second tightening section, and the end of the first tightening section of each set of pull ropes away from the connecting section is connected to the waistband, and the second tightening section is connected to the buckle, and the two sets of pull ropes cooperate to wrap around the waistband.

[0011] Technical solution seven based on technical solution six: The first tightening section of each group of pull ropes, the end furthest from the connecting section, is respectively connected to both sides of the front placket of the waistband.

[0012] Technical solution eight based on technical solution one: The thimble is located on the back side of the waistband.

[0013] Technical Solution Nine based on Technical Solution One: The swivel includes a base, a winding wheel, an elastic pawl, and a knob; the base is fixed to the waist head; the winding wheel is rotatably mounted on the base about a first axis, and has a first tooth on its side facing the knob, the first tightening section being adapted to be wound around the winding wheel; the elastic pawl is fixed to the base on the side facing the knob; the knob is rotatably mounted on the base about a first axis, and has a second tooth adapted to engage with the first tooth and a ratchet tooth adapted to cooperate with the elastic pawl; the knob along the first axis... An axis slides relative to the base in a first position and a second position. In the first position, the first tooth engages with the second tooth to drive the winding wheel to rotate in a first rotation direction via the knob. In the second position, the first tooth disengages from the second tooth to allow the winding wheel to rotate in a second rotation direction. The elastic pawl is adapted to engage with the ratchet when the knob is in the first position so that the knob can only rotate in the first rotation direction. When the winding wheel rotates in the first rotation direction, it tightens the pull rope, and when it rotates in the second rotation direction, it releases the pull rope.

[0014] Technical solution ten based on technical solution nine: the base is fixed to the inner lining of the waistband, and the knob is exposed on the outer lining of the waistband.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] Technical Solution 1 provides a pair of trousers with an easily adjustable waistband. The core of this solution lies in the convenient adjustment of the waistband through a combination of a drawstring and a snap fastener. The drawstring includes a first tightening section, a connecting section, and a second tightening section. The first tightening section is a strip-shaped structure with a preset width, providing a larger contact area in the waistband width direction. This allows for more even distribution of tension when tightened, preventing localized stress concentration that could lead to waistband deformation, wrinkles, or user discomfort. The second tightening section is a thin rope-like structure, suitable for connection with the snap fastener, facilitating tightening. The connecting section serves as a connection and transition, ensuring the overall stability of the drawstring structure and preventing the first tightening section from narrowing under the pull of the second tightening section, thus reducing the contact area. The snap fastener connects to the second tightening section via a self-locking mechanism. Utilizing the mechanical principle of rotation, it converts rotational motion into linear tightening or loosening motion of the drawstring. The locking function of the snap fastener prevents the drawstring from springing back, ensuring the stability of the waistband after adjustment. Furthermore, the drawstring design allows for either a single-end fixation to the waistband or a loop around the waistband connected to buckles at both ends, providing a flexible force distribution and enhancing the overall restraint effect of the drawstring on the waistband. This technical solution provides pants with an easily adjustable waistband. On one hand, the self-locking mechanism of the buckle allows users to quickly and precisely adjust the waistband tightness, simplifying operation without needing to untangle the knot, thus improving ease of use. On the other hand, the strip-like design of the drawstring combined with the buckle optimizes the force distribution, reducing uneven stress on the waistband and improving wearing comfort and the durability of the waistband structure.

[0017] Technical Solution Two, building upon Technical Solution One, further defines the first tightening section as including multiple ropes arranged along the width of the waistband. The core of this technical solution lies in increasing the overall contact effect and tension distribution points between the first tightening section and the waistband through the multi-rope design, while reducing friction between the ropes and the waistband. Multiple ropes create multiple stress points along the width of the waistband, thus evenly distributing the overall tension of the ropes and avoiding localized deformation or a cutting sensation that may occur when a single rope is tightened. The technical benefits of this design are: through the arrangement of multiple ropes, the first tightening section can better conform to the shape of the waistband when tightened, providing a more uniform tightening force, further improving user comfort, while reducing the risk of wear or deformation of the waistband material due to concentrated localized stress, thus extending the lifespan of the trousers.

[0018] Technical Solution 3, building upon Technical Solution 2, further limits the number of ropes in the first tightening section to 3 to 8, arranged at fixed intervals along the waist width direction. The core of this technical solution lies in optimizing the uniformity of tension distribution through the design of the specific number and intervals. Three to eight ropes create a reasonable number of stress points along the waist width direction, avoiding both insufficient number leading to concentrated tension and excessive number resulting in structural complexity or excessive tension dispersion. The fixed intervals ensure tension balance among the stress points, preventing uneven stress in localized areas. The technical effect of this design is that, by limiting the number and intervals of the ropes, the first tightening section provides a more stable and uniform tightening effect when tightened, further improving wearing comfort and the reliability of waistband adjustment, while maintaining structural simplicity and controllable manufacturing costs.

[0019] Technical Solution Four, building upon Technical Solution One, defines the first tightening section as a flattened drawstring with a preset width along the waistband width direction. The core of this technical solution lies in increasing the contact area between the first tightening section and the waistband through the flattened drawstring design. Compared to a thinner rope, the flattened drawstring can distribute tension over a larger area, reducing the concentration of localized stress on the waistband and avoiding discomfort or deformation of the waistband material caused by tightening. The technical benefits of this design are: the flattened drawstring structure allows the waistband to fit the user's waist more closely when tightened, providing a more comfortable wearing experience, while reducing the risk of damage to the waistband due to concentrated stress, thus enhancing the durability of the pants.

[0020] Technical Solution Five, building upon Technical Solution One, defines the connecting section as a flattened cord with a preset width in the waistband width direction and extending in the waistband length direction. The core of this technical solution lies in optimizing the force transmission between the various sections of the drawstring through the flattened design of the connecting section. The flattened connecting section provides a larger force-bearing area in the width direction, ensuring smoother force transmission between the first and second tightening sections and preventing deformation or breakage of the drawstring due to localized force concentration. Simultaneously, the design of the connecting section extending along the waistband length direction allows it to conform to the natural shape of the waistband, reducing twisting or accumulation of the drawstring within the waistband. The technical benefits of this design are: the flattened and extended structure of the connecting section improves the overall mechanical stability of the drawstring, enhances the smoothness and reliability of waistband adjustment, and reduces internal friction, extending its service life.

[0021] Technical Solution Six, building upon Technical Solution One, specifies that the drawstring comprises two sets. Each set includes a first tightening section, a connecting section, and a second tightening section. The first tightening sections of both sets are connected to the waistband, and the second tightening sections are connected to the buckle, working together to wrap around the waistband. The core of this technical solution lies in achieving a balanced distribution of force on the waistband through the symmetrical design of the two sets of drawstrings. The two sets of drawstrings originate from different positions on the waistband and wrap around it, ultimately tightening through the buckle. This creates uniform tension in all directions around the waistband, avoiding the force imbalance that might occur with a single set of drawstrings. The technical benefits of this design are: the synergistic effect of the two sets of drawstrings makes the waistband more stable and evenly tightened, preventing localized deformation or discomfort at the waistband, improving wearing comfort and the reliability of the adjustment effect, while also enhancing the overall durability of the waistband structure.

[0022] Technical Solution Seven, building upon Technical Solution Six, further specifies that the ends of the first tightening sections of the two sets of drawstrings, furthest from the connecting sections, are respectively connected to both sides of the front placket of the waistband. The core of this technical solution lies in optimizing the distribution of tension through the connection design on both sides of the front placket. The drawstrings originate from both sides of the front placket, forming a symmetrical tension starting point on the front of the waistband. This, combined with the tightening action of the rear buckle, creates a balanced distribution of tension, preventing excessive stress on the waistband in any one direction. The technical effect of this design is that, through the connection method on both sides of the front placket, the drawstrings can more naturally conform to the curve of the human waist when tightening, providing a more even tightening effect and further improving wearing comfort and the stability of the waistband structure.

[0023] Technical Solution Eight, building upon Technical Solution One, places the buckle at the back of the waistband. The core of this solution lies in improving both ease of use and aesthetic appeal through the strategic placement of the buckle. Positioning the buckle at the back of the waistband allows users to naturally adjust the waistband using both hands from behind, avoiding the visual abruptness or discomfort that a front-mounted buckle might cause. Furthermore, the rear placement makes it less noticeable to others, meeting the aesthetic needs of everyday wear. The technical benefits of this design are: the rear placement of the buckle makes waistband adjustment more discreet and convenient, without affecting the overall appearance of the pants, while providing a comfortable operating experience in actual use, thus enhancing both the practicality and aesthetics of the pants.

[0024] Technical Solution Nine, building upon Technical Solution One, details the structure of the twist-lock, including the specific design and working mechanism of the base, winding wheel, elastic pawl, and knob. The core of this technical solution lies in achieving precise tightening and loosening of the drawstring through the mechanical structure of the twist-lock. The knob, through engagement with the first and second teeth of the winding wheel, converts rotational motion into the rotation of the winding wheel, thereby tightening or loosening the drawstring. The engagement of the elastic pawl with the ratchet teeth forms a one-way locking mechanism, preventing the knob from rotating in the opposite direction and ensuring the stability of the tightened drawstring. Switching between the first and second positions of the knob provides flexible control over tightening and loosening, optimizing the user experience. The technical advantages of this design are: the precise mechanical structure of the twist-lock enables precise control of the drawstring tension; users can easily adjust the waistband by simply rotating the knob, avoiding the cumbersome operation of traditional drawstring tying; and the locking mechanism ensures stable tension after adjustment, significantly improving the convenience, reliability, and user experience of waistband adjustment.

[0025] Technical Solution Ten, building upon Technical Solution Nine, specifies that the base of the buckle is fixed to the lining of the waistband, while the knob protrudes from the outer lining. The core of this technical solution lies in optimizing the structural layout and ease of operation through the layered design of the buckle. Fixing the base to the lining conceals most of the mechanical structure, preventing internal parts from protruding or wearing on the outer side of the waistband, while ensuring the overall stability of the buckle. The knob protruding from the outer lining allows for direct user operation, enabling adjustments without having to fold up the clothing. The technical benefits of this design are: the layered design of the buckle ensures both convenience and intuitiveness in waistband adjustment, maintains the smoothness and aesthetics of the outer side of the pants, reduces the buckle's interference with wearing comfort, and comprehensively improves the practicality and appearance of the pants. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the trousers with an adjustable waistband, according to an embodiment of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of the trousers with an adjustable waistband, according to an embodiment of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the waistband structure of trousers that facilitates waistband adjustment, according to an embodiment of the present invention.

[0030] Figure 4 for Figure 3 Structural explosion of the central buckle Figure 1 ;

[0031] Figure 5 for Figure 3 Structural explosion of the central screw buckle Figure 2 .

[0032] Explanation of key figure labels:

[0033] Waistband 10; Front placket 11;

[0034] Pull rope 20; First tightening section 21; Connecting section 22; Second tightening section 23;

[0035] 30; base 31; connecting seat 311; receiving seat 312; rotating chamber 3121; wire inlet 3122; limiting flange 3123; locking flange 3124; winding wheel 32; first tooth 321; elastic pawl 33; knob 34; second tooth 341; ratchet 342; locking protrusion 343;

[0036] Pants size 40. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0038] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0039] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0040] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0041] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0042] Example

[0043] This utility model embodiment relates to a pair of trousers with an adjustable waistband, see reference. Figure 1 and Figure 2 The diagram illustrates the general structure of the trousers, which include a body 40 and a waistband 10. The body 40 comprises the lower half of the legs and waistband, while the waistband 10 is the upper half of the waistband. The body 40 and waistband 10 are integrated as one piece. The waistband 10 includes an inner lining and an outer lining. When worn by a user, the lining conforms to the body, while the outer lining protrudes to the outside. The lining and outer lining cooperate to form a channel within the waistband 10. This channel may extend continuously or interrupted at a certain location along the length direction of the waistband 10. Here, the length direction of the waistband 10 can be considered as the circumferential direction of the waistband 10. Furthermore, the width direction of the waistband 10 referred to in this specification and claims refers to another direction perpendicular to the length direction of the waistband 10.

[0044] Reference Figure 1 and Figure 2 The trousers with adjustable waistbands according to this utility model embodiment also include a drawstring 20 and a snap fastener 30.

[0045] The pull cord 20 is threaded through the waistband 10 and includes a first tightening section 21, a connecting section 22, and a second tightening section 23. The first tightening section 21 is a strip with a preset width in the width direction of the waistband 10, and the second tightening section 23 is a thin rope. The connecting section 22 connects the first tightening section 21 and the second tightening section 23 to both ends of the waistband 10 in the length direction. The buckle 30 is fixed to the waistband 10 and connected to the second tightening section 23 of the pull cord 20 to tighten or loosen the pull cord 20 by rotating and self-locking. The end of the first tightening section 21 of the pull cord 20 away from the connecting section 22 is connected to the waistband 10, or the pull cord 20 wraps around the waistband 10 and is connected to the buckle 30 through the two second tightening sections 23 located at both ends of the length direction of the pull cord 20.

[0046] Specifically, the pull cord 20 is a long strip-shaped component that is threaded through a channel within the waistband 10. The waistband 10 can be tightened by pulling the pull cord 20 or loosened by releasing it. The pull cord 20 includes a first tightening section 21, a connecting section 22, and a second tightening section 23. The first tightening section 21 is the main part of the pull cord 20, used for adjusting the tightness of the waistband 10 over a wide range. The second tightening section 23 is the part of the pull cord 20 used to connect to the buckle 30. Due to the structure of the buckle 30, it is generally only suitable for thin rope-like components. The connecting section 22 connects the first tightening section 21 and the second tightening section 23, preventing uneven stress at the connection point of the second tightening section 23 from causing deformation of the first tightening section 21 in the width direction.

[0047] As one aspect of this utility model embodiment, the first tightening section 21 includes a plurality of ropes arranged along the width direction of the waist head 10. Specifically, refer to... Figure 3 The drawstring 20 comprises multiple ropes in the first tightening section 21. These ropes are long, thin, rope-like components arranged sequentially along the width of the waistband 10, forming a strip-like first tightening section 21 of a preset width. This strip-like design treats the ropes as a single unit across the width, ignoring the spacing between adjacent ropes. This multi-rope design increases the overall contact effect and tension distribution points between the first tightening section 21 and the waistband 10, while reducing friction between the drawstring 20 and the waistband 10. Multiple ropes create multiple stress points along the width of the waistband 10, evenly distributing the overall tension of the drawstring 20 and avoiding localized deformation or a cutting sensation that might occur when a single rope is tightened. The technical advantage of this design is that the arrangement of multiple ropes allows the first tightening section 21 to better conform to the shape of the waistband 10 when tightened, providing a more uniform tightening force, further improving user comfort, and reducing the risk of wear or deformation of the waistband 10 material due to concentrated localized stress, thus extending the lifespan of the trousers.

[0048] In a preferred embodiment, the first tightening section 21 contains 3 to 8 ropes, each rope spaced at a fixed distance along the width of the waistband 10. The 3 to 8 ropes create a reasonable number of stress points along the width of the waistband 10, avoiding both insufficient ropes leading to concentrated tension and excessive ropes causing structural complexity or excessive force dispersion. The fixed-distance arrangement ensures balanced tension among the stress points, preventing uneven stress in localized areas. The technical advantage of this design is that by limiting the number and spacing of the ropes, the first tightening section 21 provides a more stable and uniform tightening effect when tightened, further improving wearing comfort and the reliability of waistband adjustment, while maintaining structural simplicity and controllable manufacturing costs.

[0049] Alternatively, in other embodiments, the first tightening section 21 is a drawstring flattened in the width direction of the waistband 10 and having a preset width. Specifically, in this embodiment, the first tightening section 21 is a common long strip-shaped component with a certain width, and its width direction is consistent with the width direction of the waistband 10. Compared with a thin rope, the flattened drawstring can distribute the tension over a larger area, reduce the concentration of local stress on the waistband 10, and avoid discomfort or deformation of the waistband 10 material caused by tightening. The technical effect of this design is that the flattened structure of the drawstring makes the waistband fit the user's waist more closely when tightened, providing a more comfortable wearing experience, while reducing the risk of damage to the waistband 10 due to concentrated stress and enhancing the durability of the pants.

[0050] In all cases, the connecting segment 22 is a rope strip flattened in the width direction of the waist head 10 and having a preset width, and it extends in the length direction of the waist head 10. Specifically, when the first tightening segment 21 is formed by multiple ropes, the ends of these ropes can be sequentially connected to one end of the connecting segment 22 along the width direction, and the end of the second tightening segment 23 can be connected to the other end of the connecting segment 22 at the middle position in the width direction to ensure uniform force application. When the first tightening segment 21 is a rope strip, the connecting segment 22 can be integrally woven with the first tightening segment 21, and the end of the second tightening segment 23 is also connected to one end of the connecting segment 22 at the middle position in the width direction. The flattened connecting section 22 provides a larger force-bearing area in the width direction, ensuring a smoother force transmission between the first tightening section 21 and the second tightening section 23, and preventing deformation or breakage of the drawstring 20 due to localized force concentration. Simultaneously, the design of the connecting section 22 extending along the length of the waistband 10 allows it to conform to the natural shape of the waistband 10, reducing twisting or accumulation of the drawstring 20 within the waistband 10. The technical benefits of this design are: the flattened and extended structure of the connecting section 22 improves the overall mechanical stability of the drawstring 20, enhances the smoothness and reliability of waistband adjustment, and reduces internal friction, extending its service life.

[0051] The aforementioned pull rope 20 can be made of polymer materials such as nylon to ensure structural strength and service life.

[0052] As one aspect of this utility model embodiment, the pull cord 20 includes two sets, each set of pull cords 20 including a first tightening section 21, a connecting section 22, and a second tightening section 23. The end of the first tightening section 21 of each set of pull cords 20 away from the connecting section 22 is connected to the waistband 10, and the second tightening section 23 is connected to the buckle 30. The two sets of pull cords 20 cooperate to surround the waistband 10. Furthermore, the end of the first tightening section 21 of each set of pull cords 20 away from the connecting section 22 is respectively connected to both sides of the front placket 11 of the waistband 10.

[0053] Specifically, refer to Figure 3 The waistband 10 has two sets of drawstrings 20, located on the left and right sides respectively. In the drawstring 20 on the left, one end of the first tightening section 21 is fixedly connected to the front placket 11 of the waistband 10, and the other end is connected to a connecting section 22. One end of the connecting section 22 connects to a second tightening section 23, which in turn connects to a snap fastener 30. In the drawstring 20 on the right, one end of the first tightening section 21 is fixedly connected to the front placket 11 of the waistband 10, and the other end is connected to a connecting section 22. One end of the connecting section 22 connects to the second tightening section 23, which in turn connects to a snap fastener 30. The two sets of drawstrings 20 originate from different positions on the waistband 10 and wrap around it, ultimately tightening through the snap fastener 30. This creates a uniform tension in all directions of the waistband 10, avoiding the force imbalance that might occur with a single set of drawstrings 20. The technical benefits of this design are as follows: the synergistic effect of the two sets of drawstrings 20 makes the waistband more stable and even when tightened, avoiding localized deformation or discomfort at the waistband 10, improving wearing comfort and the reliability of the adjustment effect, while also enhancing the overall durability of the waistband structure. Furthermore, the drawstrings 20, originating from both sides of the front placket 11, can form symmetrical tension points on the front side of the waistband 10, cooperating with the tightening action of the rear buckle 30 to create a balanced distribution of tension from front to back, preventing excessive stress on the waistband 10 in any one direction. The technical benefits of this design are also that, through the connection method on both sides of the front placket 11, the drawstrings 20 can more naturally conform to the curve of the human waist when tightened, providing a more even tightening effect, further improving wearing comfort and the stability of the waistband structure.

[0054] In another embodiment, only one pull cord 20 may be provided in the waistband 10. This pull cord 20 includes a first tightening section 21, two connecting sections 22, and two second tightening sections 23. The two connecting sections 22 connect to both ends of the first tightening section 21, and each tightening section has one end connected to a connecting section 22, while the other ends connect to a buckle 30 from opposite directions. The entire pull cord 20 is threaded around the waistband 10 and passes through a channel within the waistband 10. The entire pull cord 20 can also be tightened using the buckle 30.

[0055] Preferably, the buckle 30 is located at the rear of the waistband 10. Positioning the buckle 30 at the rear of the waistband 10 allows the user to naturally operate it from behind with both hands during adjustment, avoiding the visual abruptness or discomfort that a front-mounted buckle 30 might cause. Simultaneously, its rear position is less noticeable to others, meeting the aesthetic needs of everyday wear. The technical advantage of this design is that the rear placement of the buckle 30 makes waistband adjustment more discreet and convenient, without affecting the overall appearance of the pants, while providing a comfortable operating experience in actual use, thus enhancing the practicality and aesthetics of the pants.

[0056] In addition, refer to Figure 4 and Figure 5 The throttle 30 includes a base 31, a winding wheel 32, an elastic pawl 33, and a knob 34; the base 31 is fixed to the waist head 10; the winding wheel 32 is rotatably mounted on the base 31 about a first axis, and has a first tooth 321 on the side facing the knob 34, and the first tightening section 21 is adapted to be wound around the winding wheel 32; the elastic pawl 33 is fixed to the side of the base 31 facing the knob 34; the knob 34 is rotatably mounted on the base 31 about a first axis, and has a second tooth 341 adapted to mesh with the first tooth 321 and a ratchet 342 adapted to cooperate with the elastic pawl 33; the knob 34 along... The first axis slides relative to the base 31 in a first position and a second position. In the first position, the first tooth 321 engages with the second tooth 341 to drive the winding wheel 32 to rotate in a first rotation direction via the knob 34. In the second position, the first tooth 321 disengages from the second tooth 341 to allow the winding wheel 32 to rotate in a second rotation direction. The elastic pawl 33 is adapted to engage with the ratchet 342 when the knob 34 is in the first position so that the knob 34 can only rotate in the first rotation direction. When the winding wheel 32 rotates in the first rotation direction, it tightens the pull rope 20, and when it rotates in the second rotation direction, it loosens the pull rope 20.

[0057] Specifically, the base 31 includes a connecting seat 311 and a receiving seat 312. The connecting seat 311 can be made of elastic plastic and can be sewn onto the fabric of the waistband 10. The receiving seat 312 is detachably fixed to the connecting seat 311 by a snap-fit ​​mechanism. The receiving seat 312 has a rotating chamber 3121 with an opening facing the connecting seat 311. The receiving seat 312 has two wire inlets 3122 communicating with the rotating chamber 3121. A limiting flange 3123 is provided around the outer periphery of the receiving seat 312, and a snap-fit ​​flange 3124 is provided in the middle of the outer side surface of the receiving seat 312. The winding wheel 32 is rotatably installed in the rotating chamber 3121 of the receiving seat 312, and a first tooth 321 is provided on its outer side, which protrudes from the outer side of the fixed seat. The elastic pawl 33 is fixedly installed on the outer side of the receiving seat 312, while the buckle 30 is rotatably fastened to the receiving seat 312. The inner wall of the buckle 30 can cooperate with the limiting flange 3123 of the receiving seat 312, so that the buckle 30 can move between the first position and the second position along the first axis without disengaging from the receiving seat 312. The middle position of the inner wall of the buckle 30 is provided with a second tooth 341 facing the winding wheel 32, and a ratchet portion 342 that cooperates with the elastic pawl 33 is provided in the circumferential direction. The elastic pawl 33 can cooperate with the ratchet portion 342, restricting the buckle 30 to rotate only in the first rotation direction. In use, the user presses the buckle 30 to place it in the first position. In the first position, the second tooth 341 of the buckle 30 engages with the first tooth 321 of the winding wheel 32. The user can rotate the buckle 30 in the first rotation direction. During the rotation of the buckle 30, the elastic pawl 33 and the ratchet 342 remain engaged. At the same time, the winding wheel 32 rotates in the first rotation direction, winding the second tightening section 23 of the pull rope 20 around its own circumference, thereby achieving the function of tightening the pull rope 20. After rotating to the correct position, the buckle 30 can be released. Under the action of the elastic pawl 33 and the ratchet 342, the buckle 30 will be positioned in this position and will not rotate back in the opposite second rotation direction. When it is necessary to release the pull rope 20, the user pulls the buckle 30 outward to the second position. At this time, the second tooth 341 of the buckle 30 disengages from the first tooth 321 of the winding wheel 32. Under the pull of the pull rope 20 itself, the winding wheel 32 rotates in the opposite second rotation direction.The buckle 30 is also provided with a snap-fit ​​protrusion 343, which can cooperate with the snap-fit ​​edge 3124 on the receiving seat 312. When the buckle 30 is in the first position, the snap-fit ​​edge 3124 restricts the buckle 30 from leaving the first position by abutting against the snap-fit ​​protrusion 343. When it is necessary to release the pull rope 20, the user can forcefully pull the buckle 30 outward from the first position to the second position. During this process, the snap-fit ​​protrusion 343 applies force to the part where the snap-fit ​​edge 3124 is located, causing it to deform, thereby causing the snap-fit ​​protrusion 343 to leave the position abutting against the snap-fit ​​edge 3124. When it is necessary to tighten the pull rope 20 again, the buckle 30 is pressed down forcefully to make the snap-fit ​​protrusion 343 and the snap-fit ​​edge 3124 re-form a cooperation.

[0058] The knob 34, through engagement with the first tooth 321 and the second tooth 341 of the winding wheel 32, converts rotational motion into rotation of the winding wheel 32, thereby tightening or loosening the drawstring 20. The engagement of the elastic pawl 33 with the ratchet 342 forms a one-way locking mechanism to prevent the knob 34 from rotating in the opposite direction, ensuring the stability of the drawstring 20 after tightening. Switching between the first and second positions of the knob 34 provides flexible control over tightening and loosening, optimizing the user experience. The technical advantages of this design are: the precision mechanical structure of the knob 30 enables accurate control of the pull force of the drawstring 20; users can easily adjust the waistband by simply rotating it, avoiding the cumbersome operation of tying the traditional drawstring 20; at the same time, the locking mechanism ensures stable pull force after adjustment, significantly improving the convenience, reliability, and user experience of waistband adjustment.

[0059] Furthermore, the base 31 is fixed to the lining of the waistband 10, while the knob 34 protrudes from the outer lining of the waistband 10. Fixing the base 31 to the lining conceals most of the mechanical structure, preventing internal parts from protruding or wearing on the outer side of the waistband 10, while ensuring the overall stability of the knob 30. The knob 34 protruding from the outer lining allows for direct user operation, enabling adjustment without opening the garment. The technical advantage of this design is that the layered design of the knob 30 ensures both the convenience and intuitiveness of waistband adjustment, maintains the smoothness and aesthetics of the outer side of the pants, reduces the interference of the knob 30 on wearing comfort, and comprehensively improves the practicality and appearance of the pants.

[0060] This utility model relates to a pair of trousers with an adjustable waistband. The core of its technical solution lies in the convenient adjustment of the waistband through a combination of a drawstring 20 and a snap fastener 30. The drawstring 20 includes a first tightening section 21, a connecting section 22, and a second tightening section 23. The first tightening section 21 is a strip-shaped structure with a preset width, providing a larger contact area in the width direction of the waistband 10. This allows for a more even distribution of tension when tightened, preventing localized stress concentration that could lead to deformation, wrinkles, or user discomfort at the waistband 10. The second tightening section 23 is a thin rope-like structure, suitable for connection to the snap fastener 30, facilitating its tightening operation. The connecting section 22 serves as a connection and transition, ensuring the overall stability of the drawstring 20 structure and preventing the first tightening section 21 from narrowing under the pull of the second tightening section 23, thus reducing the contact area. The buckle 30 is connected to the second tightening section 23 via a rotating self-locking mechanism. Utilizing the mechanical principle of rotation, it converts rotational motion into linear tightening or loosening motion of the drawstring 20. The locking function of the buckle 30 prevents the drawstring 20 from springing back, ensuring stability after waistband adjustment. Furthermore, the drawstring 20 can be designed to be fixed at one end to the waistband 10 or wrap around the waistband 10, connected to the buckle 30 at both ends, providing a flexible force distribution method and enhancing the overall restraint effect of the drawstring 20 on the waistband 10. This technical solution provides pants with an easily adjustable waistband. On the one hand, the rotating self-locking mechanism of the buckle 30 allows users to quickly and accurately adjust the waistband tightness, simplifying operation without needing to untangle knots, thus improving ease of use. On the other hand, the strip-like design of the drawstring 20 combined with the buckle 30 optimizes the force distribution, reducing uneven force distribution on the waistband 10 and improving wearing comfort and the durability of the waistband structure.

[0061] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. Trousers with a waistband which can be adjusted easily, comprising a waistband (10), characterized in that, in addition include: A drawstring (20) is threaded through the waistband (10) and includes a first tightening section (21), a connecting section (22), and a second tightening section (23). The first tightening section (21) is a strip with a preset width in the width direction of the waistband (10), the second tightening section (23) is a thin rope, and the connecting section (22) connects the first tightening section (21) and the second tightening section (23) to both ends of the waistband (10) in the length direction, respectively. A swivel buckle (30) is fixed to the waist head (10) and connected to the second tightening section (23) of the pull rope (20) to tighten or loosen the pull rope (20) by rotating and self-locking. The first tightening section (21) of the pull cord (20) is connected to the waistband (10) at one end away from the connecting section (22), or the pull cord (20) wraps around the waistband (10) and is connected to the buckle (30) through two second tightening sections (23) located at both ends of the length direction of the pull cord (20).

2. The pants of claim 1 wherein, The first tightening section (21) includes a plurality of ropes arranged along the width direction of the waist head (10).

3. The pants of claim 2 wherein, The number of ropes in the first tightening section (21) is 3 to 8, and each rope is arranged at a fixed distance along the width direction of the waist head (10).

4. The pants of claim 1 wherein, The first tightening section (21) is a rope that is flattened in the width direction of the waist head (10) and has a preset width.

5. The pants of claim 1 wherein, The connecting segment (22) is a rope strip that is flattened in the width direction of the waist head (10) and has a preset width, and extends in the length direction of the waist head (10).

6. The pants of claim 1 wherein, The pull cord (20) includes two sets. Each set of pull cords (20) includes a first tightening section (21), a connecting section (22), and a second tightening section (23). The end of the first tightening section (21) of each set of pull cords (20) away from the connecting section (22) is connected to the waistband (10), and the second tightening section (23) is connected to the buckle (30). The two sets of pull cords (20) cooperate to wrap around the waistband (10).

7. The pants of claim 6 wherein, The first tightening section (21) of each set of pull cords (20) is connected to the two sides of the front placket (11) of the waistband (10) at the end away from the connecting section (22).

8. The pants of claim 1 wherein, The swivel (30) is located on the rear side of the waistband (10).

9. The pants of claim 1 wherein, The swivel (30) includes a base (31), a winding wheel (32), an elastic pawl (33), and a knob (34); the base (31) is fixed to the waist head (10); the winding wheel (32) is rotatably mounted on the base (31) about a first axis, and has a first tooth (321) on the side facing the knob (34), and the first tightening section (21) is adapted to be wound on the winding wheel (32); the elastic pawl (33) is fixed to the side of the base (31) facing the knob (34); the knob (34) is rotatably mounted on the base (31) about a first axis, and has a second tooth (341) adapted to mesh with the first tooth (321) and a ratchet (342) adapted to cooperate with the elastic pawl (33); The knob (34) slides relative to the base (31) along the first axis to a first position and a second position. In the first position, the first tooth (321) engages with the second tooth (341) to drive the winding wheel (32) to rotate in a first rotation direction. In the second position, the first tooth (321) disengages from the second tooth (341) to allow the winding wheel (32) to rotate in a second rotation direction. The elastic pawl (33) is adapted to engage with the ratchet (342) when the knob (34) is in the first position so that the knob (34) can only rotate in the first rotation direction. When the winding wheel (32) rotates in the first rotation direction, it tightens the pull rope (20) and when it rotates in the second rotation direction, it releases the pull rope (20).

10. The pants of claim 9 wherein, The base (31) is fixed to the lining of the waist head (10), and the knob (34) protrudes from the outer lining of the waist head (10).

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