Trousers convenient for adjusting tightness of trouser waist

Abstract

The invention 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] The present invention relates to the technical field of trousers, and particularly to a pair of trousers facilitating adjustment of waistband tightness. Background Art

[0002] The waistbands of trousers can be divided into types that can adjust tightness and types that cannot. Among them, the types that can adjust tightness generally have drawstrings threaded inside the waistband, and the waistband tightness is adjusted by tightening the drawstrings. However, this structure for adjusting the waistband tightness with drawstrings is less aesthetically pleasing, and is only applicable to trousers such as sweatpants. Moreover, when adjusting the tightness, it is necessary to untie and retie the knots of the drawstrings, which is inconvenient in operation. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned defects or problems in the background art, and provide a pair of trousers facilitating adjustment of waistband tightness, in which the way of adjusting the waistband tightness is more aesthetically pleasing and convenient to operate.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Technical Solution 1: A pair of trousers facilitating adjustment of waistband tightness, which includes a waistband, and further includes: a drawstring threaded inside the waistband, and including a first tightening section, a connecting section, and a second tightening section; the first tightening section is in the form of a strip with a preset width in the width direction of the waistband, the second tightening section is in the form of a thin string, 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 rotary buckle fixedly provided on the waistband and connected to the second tightening section of the drawstring to tighten or loosen the drawstring by self-locking through rotation; one end of the first tightening section of the drawstring away from the connecting section is connected to the waistband, or the drawstring surrounds the waistband and is connected to the rotary buckle through the two second tightening sections at both ends in the length direction of the drawstring.

[0006] Technical Solution 2 based on Technical Solution 1: The first tightening section includes a plurality of ropes arranged in the width direction of the waistband.

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

[0008] Technical Solution 4 based on Technical Solution 1: The first tightening section is a flat rope band with a preset width in the width direction of the waistband.

[0009] Technical Solution 5 based on Technical Solution 1: The connecting section is a flat rope band with a preset width in the width direction of the waistband and extends in the length direction of the waistband.

[0010] Technical solution six based on technical solution one: The drawstrings include two groups. Each group of drawstrings includes a first tightening section, a connecting section, and a second tightening section. And one end of the first tightening section of each group of drawstrings away from the connecting section is connected to the waistband, and the second tightening sections are all connected to the turnbuckle. And these two groups of drawstrings cooperate to surround the waistband.

[0011] Technical solution seven based on technical solution six: One end of the first tightening section of each group of drawstrings away 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 turnbuckle is located at the rear side of the waistband.

[0013] Technical solution nine based on technical solution one: The turnbuckle includes a base, a winding wheel, an elastic pawl, and a knob; the base is fixedly arranged on the waistband; the winding wheel is rotatably installed on the base around a first axis, and a first tooth portion is arranged on the side thereof facing the knob, and the first tightening section is adapted to be wound around the winding wheel; the elastic pawl is fixedly arranged on the side of the base facing the knob; the knob is rotatably installed on the base around the first axis, and is provided with a second tooth portion adapted to mesh with the first tooth portion and a ratchet portion adapted to cooperate with the above elastic pawl; the knob slides relative to the base along the first axis between a first position and a second position, and when in the first position, the first tooth portion meshes with the second tooth portion to drive the winding wheel to rotate in a first rotation direction through the knob, and when in the second position, the first tooth portion is disengaged from the second tooth portion to enable the winding wheel to rotate in a second rotation direction; the elastic pawl is adapted to cooperate with the ratchet portion when the knob is in the first position to enable the knob to only rotate in the first rotation direction; the winding wheel tightens the drawstring when rotating in the first rotation direction and loosens the drawstring when rotating in the second rotation direction.

[0014] Technical solution ten based on technical solution nine: The base is fixedly arranged on the lining of the waistband, and the knob exposes outside the outer lining of the waistband.

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

[0016] Technical Solution 1 provides a pair of pants with adjustable waistband tightness. The core of its technical solution lies in the combination design of a drawstring and a rotary buckle to achieve convenient adjustment of the waistband tightness. The drawstring includes a first tightening section, a connecting section, and a second tightening section. The first tightening section is a strip structure with a preset width, which can provide a larger contact area in the width direction of the waistband, so that when tightened, the pulling force can be more evenly distributed, avoiding local stress concentration resulting in waistband deformation, wrinkles, or user discomfort. The second tightening section is a thin cord, suitable for connecting with the rotary buckle to facilitate the tightening operation of the rotary buckle. The connecting section plays a role of connection and transition, ensuring the stability of the overall structure of the drawstring, and can also prevent the width of the first tightening section from narrowing due to the pulling of the second tightening section, resulting in a reduction in the contact area. The rotary buckle is connected to the second tightening section through a rotary self-locking mechanism, and uses the mechanical principle of rotation to convert the rotational motion into a linear tightening or loosening motion of the drawstring. The locking function of the rotary buckle prevents the drawstring from rebounding, ensuring the stability after adjusting the waistband tightness. In addition, the design of the drawstring can be fixed at one end to the waistband or surround the waistband and connect the rotary buckles at both ends, providing a flexible force distribution method and enhancing the overall restraint effect of the drawstring on the waistband. For the pair of pants with adjustable waistband tightness provided by this technical solution, on the one hand, through the rotary self-locking mechanism of the rotary buckle, users can quickly and accurately adjust the waistband tightness, with simple operation and no need to untie the knot, improving the usability. On the other hand, the combination of the strip design of the drawstring and the rotary buckle optimizes the force distribution, reduces the uneven local force on the waistband, and improves the wearing comfort and the durability of the waistband structure.

[0017] Technical Solution 2 further defines on the basis of Technical Solution 1 that the first tightening section includes multiple ropes arranged along the width direction of the waistband. The core of its technical solution lies in increasing the overall contact effect and the force distribution points between the first tightening section and the waistband through the design of multiple ropes, and reducing the friction between the drawstring and the waistband. Multiple ropes can form multiple force points in the width direction of the waistband, so as to evenly disperse the overall pulling force of the drawstring, avoiding possible local deformation or cutting feeling when a single rope is tightened. The technical effect of this design is that: through the arrangement of multiple ropes, the first tightening section can fit the shape of the waistband more closely when tightened, providing a more uniform tightening force, further improving the wearing comfort of users, and at the same time reducing the risk of wear or deformation of the waistband material due to local force concentration, and extending the service life of the pants.

[0018] Based on Technical Solution Two, Technical Solution Three further limits the number of ropes in the first tightening section to 3 to 8, which are arranged at fixed intervals in the width direction of the waistband. The core of its technical solution lies in optimizing the uniformity of the tensile force distribution through the design of the specific quantity and the interval distance. 3 to 8 ropes can form a reasonable number of force-bearing points in the width direction of the waistband, avoiding the concentration of tensile force caused by too few ropes and also avoiding the complexity of the structure or excessive dispersion of tensile force caused by too many ropes; the arrangement of fixed intervals ensures the balance of tensile force between each force-bearing point and prevents uneven stress in local areas. The technical effect of this design is that by limiting the number of ropes and the interval distance, the first tightening section can provide a more stable and uniform tightening effect when tightened, further enhancing the comfort of wearing and the reliability of waistband adjustment, while maintaining the simplicity of the structure and the controllability of the manufacturing cost.

[0019] Based on Technical Solution One, Technical Solution Four limits the first tightening section to a rope band that is flattened in the width direction of the waistband and has a preset width. The core of its technical solution lies in increasing the contact area between the first tightening section and the waistband through the flattening design of the rope band. The flattened rope band can disperse the tensile force over a larger area compared to a thin rope, reducing the concentration of local stress on the waistband, and avoiding discomfort caused by tightening or deformation of the waistband material. The technical effect of this design is that the flattened structure of the rope band 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 due to concentrated stress and enhancing the durability of the pants.

[0020] Based on Technical Solution One, Technical Solution Five limits the connecting section to a rope band that is flattened in the width direction of the waistband and has a preset width, and extends in the length direction of the waistband. The core of its technical solution lies in optimizing the mechanical transmission effect between each section of the drawstring through the flattening design of the connecting section. The flattened connecting section can provide a larger force-bearing area in the width direction, ensuring a more stable transmission of the tensile force between the first tightening section and the second tightening section, and avoiding deformation or breakage of the drawstring caused by concentrated local stress; at the same time, the design of the connecting section extending in the length direction of the waistband enables it to conform to the natural shape of the waistband, reducing the twisting or accumulation of the drawstring inside the waistband. The technical effect of this design is that the flattening and extending structure of the connecting section improves the overall mechanical stability of the drawstring, enhances the smoothness and reliability of waistband adjustment, while reducing the internal friction of the drawstring and extending its service life.

[0021] Technical solution six further limits on the basis of technical solution one that the drawstring includes two groups, each group of drawstrings includes a first tightening section, a connecting section, and a second tightening section, and the first tightening sections of the two groups of drawstrings are respectively connected to the waistband, the second tightening sections are connected to the rotary buckle, and cooperate to surround the waistband. The core of its technical solution lies in achieving a balanced distribution of the force on the waistband through the symmetrical design of the two groups of drawstrings. The two groups of drawstrings start from different positions on the waistband and surround the waistband, and finally are tightened through the rotary buckle, which can form a uniform pulling force in all directions of the waistband, avoiding the problem of force deviation that may be caused by a single group of drawstrings. The technical effect of this design is that the coordinated action of the two groups of drawstrings makes the waistband of the trousers more stable and uniform when tightened, avoiding local deformation or discomfort of the waistband, improving the comfort of wearing and the reliability of the adjustment effect, and at the same time enhancing the overall durability of the waistband structure.

[0022] Technical solution seven further limits on the basis of technical solution six that the ends of the first tightening sections of the two groups of drawstrings away from the connecting section are respectively connected to both sides of the front placket of the waistband. The core of its technical solution lies in optimizing the direction of the pulling force distribution through the connection design on both sides of the front placket. The drawstrings start from both sides of the front placket, which can form symmetrical pulling force starting points on the front side of the waistband, cooperate with the tightening effect of the rear rotary buckle, and form a balanced distribution of the front and rear pulling forces, avoiding excessive force on the waistband in a certain direction. The technical effect of this design is that through the connection method on both sides of the front placket, the drawstrings can fit more naturally to the curve of the human waist when tightened, providing a more uniform tightening effect, and further improving the comfort of wearing and the stability of the waistband structure.

[0023] Technical solution eight further limits on the basis of technical solution one that the rotary buckle is located at the rear side of the waistband. The core of its technical solution lies in improving the operation convenience and appearance aesthetics through the reasonable setting of the position of the rotary buckle. By setting the rotary buckle at the rear side of the waistband, users can naturally operate with both hands from behind when adjusting, avoiding the visual obtrusiveness or discomfort during wearing that may be brought by the front rotary buckle. At the same time, the rear position is not easily noticed by others, meeting the aesthetic needs of daily wearing. The technical effect of this design is that the setting of the rotary buckle at the rear side makes the adjustment operation of the waistband more concealed and convenient, neither affecting the overall appearance of the trousers nor providing a comfortable operation experience in actual use, improving the practicality and aesthetics of the trousers.

[0024] Technical solution nine further defines the structure of the buckle on the basis of technical solution one, including the specific designs and working mechanisms of the base, the winding wheel, the elastic pawl, and the knob. The core of its technical solution lies in achieving precise tightening and loosening of the drawstring through the mechanical structure of the buckle. The knob converts rotational motion into the rotation of the winding wheel by engaging with the first tooth part and the second tooth part of the winding wheel, thereby tightening or loosening the drawstring; the cooperation between the elastic pawl and the ratchet part forms a one-way locking mechanism to prevent the knob from rotating in the reverse direction and ensure the stability after the drawstring is tightened; the switching of the knob between the first position and the second position provides flexible control of tightening and loosening, optimizing the operation experience. The technical effect of this design is that: the precise mechanical structure of the buckle realizes precise control of the drawstring tension. The user can complete the adjustment of the waistband tightness by simply rotating, avoiding the cumbersome operation of traditional drawstring tying. At the same time, the locking mechanism ensures the stability of the adjusted tension, significantly improving the convenience, reliability, and user experience of waistband adjustment.

[0025] Technical solution ten further defines that the base of the buckle in technical solution nine is fixed to the inner lining of the waistband, and the knob is exposed outside the outer lining of the waistband. The core of its technical solution lies in optimizing the structural layout and operation convenience through the internal and external layered setting of the buckle. Fixing the base to the inner lining can hide most of the mechanical structures, avoiding the protrusion or wear of internal parts on the outside of the waistband, and at the same time ensuring the overall stability of the buckle; the knob being exposed outside the outer lining is convenient for the user to directly operate and complete the adjustment without opening the clothing. The technical effect of this design is that: the internal and external layered design of the buckle not only ensures the convenience and intuitiveness of the waistband adjustment operation but also maintains the flatness and beauty of the outside of the pants, reducing the interference of the buckle on wearing comfort and comprehensively improving the practicality and appearance quality of the pants. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for description in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Structural schematic diagram of the pants for facilitating the adjustment of the waistband tightness according to the embodiment of the present invention Figure 1 ;

[0028] Figure 2 Structural schematic diagram of the pants for facilitating the adjustment of the waistband tightness according to the embodiment of the present invention Figure 2 ;

[0029] Figure 3 Structural schematic diagram of the waistband in the pants for facilitating the adjustment of the waistband tightness according to the embodiment of the present invention;

[0030] Figure 4 For Figure 3 structural explosion of the middle turnbuckle Figure 1 ;

[0031] Figure 5 For Figure 3 structural explosion of the middle turnbuckle Figure 2 。

[0032] Description of main reference numerals:

[0033] Waistband 10; front placket 11;

[0034] Drawstring 20; first tightening section 21; connecting section 22; second tightening section 23;

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

[0036] Trouser body 40. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] In the claims, the description and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0039] In the claims, the description and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "vertical", "level", "vertical", "top", "bottom", "inner", "outer", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present invention.

[0040] In the claims, the description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, when using the terms "fixed connection" or "fixedly connected", it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is to say, it includes non-removable fixed connection, removable fixed connection, being integrated, and being fixed connected through other devices or components.

[0041] In the claims, the description and the above-mentioned drawings of the present invention, when using the terms "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0042] Embodiment

[0043] An embodiment of the present invention relates to a pair of trousers that is convenient for adjusting the waistband tightness. Referring to Figure 1 and Figure 2 , which shows the general structure of the trousers. The trousers include a trouser body 40 and a waistband 10. The trouser body 40 includes trouser legs and the lower half of the waistband. The waistband 10 is the upper half of the waistband. The trouser body 40 and the waistband 10 are integrated. Among them, the waistband 10 includes a lining on the inner side and an outer lining on the outer side. When the user wears it, the lining fits the human body, the outer lining is exposed on the outside, and the lining and the outer side cooperate to form a channel inside the waistband 10. The channel can extend continuously or have an interruption at a certain position along the length direction of the waistband 10. Here, the length direction of the waistband 10 can be regarded as the circumferential direction of the waistband 10. In addition, the width direction of the waistband 10 referred to in this specification and the claims is another direction perpendicular to the length direction of the waistband 10.

[0044] Referring to Figure 1 and Figure 2 , in the trousers that are convenient for adjusting the waistband tightness according to the embodiment of the present invention, a drawstring 20 and a rotary buckle 30 are further included.

[0045] Among them, the 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 in the form of a strip with a preset width in the width direction of the waistband 10. The second tightening section 23 is in the form of a thin string. The connecting section 22 connects the first tightening section 21 and the second tightening section 23 at both ends in the length direction of the waistband 10 respectively. The rotary buckle 30 is fixedly arranged on the waistband 10 and is connected to the second tightening section 23 of the drawstring 20 to realize tightening or loosening of the drawstring 20 through self-locking by rotation. One end of the first tightening section 21 of the drawstring 20 away from the connecting section 22 is connected to the waistband 10, or the drawstring 20 surrounds the waistband 10 and is connected to the rotary buckle 30 through the two second tightening sections 23 at both ends in the length direction of the drawstring 20.

[0046] Specifically, the drawstring 20 is an integral strip-shaped member, which is threaded through the channel in the waistband 10, and the waistband 10 can be tightened by pulling the drawstring 20, or loosened by releasing the drawstring 20. Among them, 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 the main part of the drawstring 20 and is used to adjust the tightness of the waistband 10 within a large range. The second tightening section 23 is the part of the drawstring 20 used to connect with the turnbuckle 30. Due to the structure of the turnbuckle 30, it is generally only applicable to thin cord-like members. The connecting section 22 is used to connect the first tightening section 21 and the second tightening section 23 to prevent uneven force at the connection position of the second tightening section 23 from causing deformation of the first tightening section 21 in the width direction.

[0047] As an aspect of the embodiment of the present invention, the first tightening section 21 includes a plurality of ropes arranged along the width direction of the waistband 10. Specifically, referring to Figure 3 , the part of the drawstring 20 in the first tightening section 21 includes a plurality of ropes. Here, the rope refers to a strip-shaped member in the form of a thin cord. The plurality of ropes are arranged in sequence in the width direction of the waistband 10, so as to cooperate with each other to form a strip-shaped first tightening section 21 with a preset width. Here, the strip shape regards these ropes as a whole in the width direction, ignoring the interval between adjacent ropes. By designing with multiple ropes, the overall contact effect and the pulling force distribution points between the first tightening section 21 and the waistband 10 are increased, and the friction between the drawstring 20 and the waistband 10 is reduced. Multiple ropes can form multiple force application points in the width direction of the waistband 10, so as to evenly disperse the overall pulling force of the drawstring 20 and avoid possible local deformation or cutting feeling when a single rope is tightened. The technical effect of this design is that: through the arrangement of multiple ropes, the first tightening section 21 can fit the shape of the waistband 10 more closely when tightened, provide a more uniform tightening force, further improve the comfort of the user when wearing, and at the same time reduce the risk of wear or deformation of the waistband 10 material due to local force concentration, and extend the service life of the trousers.

[0048] As a preferred implementation manner, the number of ropes in the first tightening section 21 is 3 to 8, and each rope is arranged at a fixed distance interval along the width direction of the waistband 10. 3 to 8 ropes can form a reasonable number of force application points in the width direction of the waistband 10, avoiding both too few ropes resulting in concentrated pulling force and too many ropes resulting in complex structure or excessive pulling force dispersion; the arrangement of fixed intervals ensures the pulling force balance between each force application point and prevents uneven force in local areas. The technical effect of this design is that: by limiting the number of ropes and the interval distance, the first tightening section 21 can provide a more stable and uniform tightening effect when tightened, further improve the comfort of wearing and the reliability of waistband adjustment, while maintaining the simplicity of the structure and the controllability of the manufacturing cost.

[0049] Alternatively, in other embodiments, the first tightening section 21 is a cord flattened in the width direction of the waistband 10 and having a preset width. Specifically, in this embodiment, the first tightening section 21 is an ordinary strip-shaped member, which has a certain width and the width direction thereof is consistent with the width direction of the waistband 10. The flattened cord can disperse the pulling force over a larger area compared to a thin cord, reducing the concentration of local stress on the waistband 10 and avoiding discomfort caused by tightening or deformation of the waistband 10 material. The technical effect of this design is that the flattened structure of the cord makes the trouser waist 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 trousers.

[0050] In any case, the connecting section 22 is a cord flattened in the width direction of the waistband 10 and having a preset width, and it extends in the length direction of the waistband 10. Specifically, when the first tightening section 21 is formed by multiple ropes in cooperation, the ends of these ropes can be sequentially connected to one end of the connecting section 22 in the width direction, and the end of the second tightening section 23 can be connected to the middle position of the other end of the connecting section 22 in the width direction to ensure uniform force application. When the first tightening section 21 is a cord, the connecting section 22 can be integrally woven and formed with the first tightening section 21, and at the same time, the end of the second tightening section 23 is also connected to the middle position of one end of the connecting section 22 in the width direction. The flattened connecting section 22 can provide a larger force-bearing area in the width direction, ensuring a more stable transmission of the pulling force between the first tightening section 21 and the second tightening section 23, and avoiding deformation or breakage of the drawstring 20 caused by local stress concentration; at the same time, the design of the connecting section 22 extending in the length direction of the waistband 10 enables it to conform to the natural shape of the waistband 10, reducing the twisting or accumulation of the drawstring 20 within the waistband 10. The technical effect of this design is that 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 the trouser waist adjustment, and at the same time reduces the internal friction of the drawstring 20 and extends its service life.

[0051] The above-mentioned drawstring 20 can be made of a polymer material such as nylon to ensure structural strength and service life.

[0052] As an aspect of the embodiment of the present invention, the drawstring 20 includes two groups, and each group of the drawstring 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 group of the drawstring 20 away from the connecting section 22 is connected to the waistband 10, and the second tightening section 23 is connected to the turnbuckle 30, and the two groups of the drawstring 20 cooperate to surround the waistband 10. Moreover, the ends of the first tightening section 21 of each group of the drawstring 20 away from the connecting section 22 are respectively connected to both sides of the front fly 11 of the waistband 10.

[0053] Specifically, referring to Figure 3 , two sets of drawstrings 20 are threaded through the waistband 10, located on the left and right sides respectively. Among the drawstrings 20 on the left side, 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 this connecting section 22 is connected to the second tightening section 23, and the second tightening section 23 is then connected to the turnbuckle 30. Among the drawstrings 20 on the right side, 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 this connecting section 22 is connected to the second tightening section 23, and the second tightening section 23 is then connected to the turnbuckle 30. The two sets of drawstrings 20 start from different positions of the waistband 10 and surround the waistband 10, and finally are tightened through the turnbuckle 30, which can form a uniform pulling force in all directions of the waistband 10, avoiding the problem of uneven force that may be caused by a single set of drawstrings 20. The technical effect of this design is that the combined action of the two sets of drawstrings 20 makes the trouser waist more stable and uniform when tightened, avoiding local deformation or discomfort of the waistband 10, improving the comfort of wearing and the reliability of the adjustment effect, and at the same time enhancing the overall durability of the trouser waist structure. Moreover, the drawstrings 20 start from both sides of the front placket 11, which can form symmetric pulling force starting points on the front side of the waistband 10, and cooperate with the tightening action of the rear turnbuckle 30 to form a balanced distribution of front and rear pulling forces, avoiding excessive force on the waistband 10 in a certain direction. The technical effect of this design is that through the connection method on both sides of the front placket 11, the drawstrings 20 can fit more naturally to the curve of the human waist when tightened, providing a more uniform tightening effect, and further improving the comfort of wearing and the stability of the trouser waist structure.

[0054] In addition, in another embodiment, only one drawstring 20 can be provided in the waistband 10. This drawstring 20 includes a first tightening section 21, two connecting sections 22, and two second tightening sections 23. The two connecting sections 22 are connected to both ends of the first tightening section 21. One end of each of the two tightening sections is connected to a connecting section 22, and the other end is connected to the turnbuckle 30 from opposite directions. The entire drawstring 20 surrounds the waistband 10 and is threaded through the channel in the waistband 10. At this time, the entire drawstring 20 can also be tightened through the turnbuckle 30.

[0055] Preferably, the turnbuckle 30 is located at the rear side of the waistband 10. By setting the turnbuckle 30 at the rear side of the waistband 10, users can naturally operate it with both hands from behind during adjustment, avoiding the visual obtrusiveness or discomfort during wearing that may be caused by the front turnbuckle 30. At the same time, the rear position is not easily noticed by others, meeting the aesthetic requirements of daily wearing. The technical effect of this design is that the setting of the turnbuckle 30 at the rear side makes the trouser waist adjustment operation more concealed and convenient, neither affecting the overall appearance of the trousers nor providing a comfortable operation experience in actual use, improving the practicality and aesthetics of the trousers.

[0056] In addition, referring to Figure 4 and Figure 5 , the spinner 30 includes a base 31, a winding wheel 32, an elastic pawl 33, and a knob 34; the base 31 is fixedly provided on the waistband 10; the winding wheel 32 is rotatably mounted on the base 31 around a first axis, and a first tooth portion 321 is provided on a side thereof 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 fixedly provided on a side of the base 31 facing the knob 34; the knob 34 is rotatably mounted on the base 31 around the first axis, and is provided with a second tooth portion 341 adapted to mesh with the first tooth portion 321 and a ratchet tooth portion 342 adapted to cooperate with the elastic pawl 33; the knob 34 slides relative to the base 31 along the first axis between a first position and a second position, and when in the first position, the first tooth portion 321 meshes with the second tooth portion 341 to drive the winding wheel 32 to rotate in a first rotation direction through the knob 34, and when in the second position, the first tooth portion 321 disengages from the second tooth portion 341 to enable the winding wheel 32 to rotate in a second rotation direction; the elastic pawl 33 is adapted to cooperate with the ratchet tooth portion 342 when the knob 34 is in the first position to enable the knob 34 to only rotate in the first rotation direction; when the winding wheel 32 rotates in the first rotation direction, the drawstring 20 is tightened, and when it rotates in the second rotation direction, the drawstring 20 is loosened.

[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 on the fabric of the waistband 10. The receiving seat 312 is detachably fixed to the connecting seat 311 by a snap connection. The receiving seat 312 is provided with a rotating chamber 3121 with an opening facing the connecting seat 311. Two wire inlet ports 3122 communicating with the rotating chamber 3121 are provided on the receiving seat 312. A limiting flange 3123 is provided around the outer periphery of the receiving seat 312. At the same time, a snap edge 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 portion 321 is provided on its outer side, and the first tooth portion 321 is exposed on the outer side of the fixed seat. The elastic pawl 33 is fixedly installed on the outer side of the receiving seat 312. At the same time, the rotating buckle 30 is rotatably buckled on the receiving seat 312. The inner side wall of the rotating buckle 30 can cooperate with the limiting flange 3123 of the receiving seat 312, so that the rotating buckle 30 can move between the first position and the second position along the first axis and will not be disconnected from the receiving seat 312. A second tooth portion 341 facing the winding wheel 32 is provided at the middle position of the inner wall of the rotating buckle 30, and a ratchet portion 342 cooperating with the elastic pawl 33 is provided in the circumferential direction. The elastic pawl 33 can cooperate with the ratchet portion 342 to limit the rotating buckle 30 to rotate only in the first rotation direction. When in use, the user presses the rotating buckle 30 to make the rotating buckle 30 in the first position. In the first position, the second tooth portion 341 of the rotating buckle 30 meshes with the first tooth portion 321 of the winding wheel 32. The user can rotate the rotating buckle 30 to rotate it in the first rotation direction. During the rotation of the rotating buckle 30, the elastic pawl 33 and the ratchet portion 342 remain in cooperation, and at the same time, the winding wheel 32 rotates in the first rotation direction, winding the second tightening section 23 of the drawstring 20 around its own circumferential side, so as to realize the function of tightening the drawstring 20. After the rotation is in place, the rotating buckle 30 can be released. Under the cooperation of the elastic pawl 33 and the ratchet portion 342, the rotating buckle 30 will be positioned at this position and will not rotate back in the opposite second rotation direction. When it is necessary to loosen the drawstring 20, the user pulls the rotating buckle 30 outwards to the second position. At this time, the second tooth portion 341 of the rotating buckle 30 is disengaged from the first tooth portion 321 of the winding wheel 32. Under the pulling of the drawstring 20 itself, the winding wheel 32 rotates in the opposite second rotation direction.Among them, a clamping projection 343 is further provided on the buckle 30. The clamping projection 343 can cooperate with the clamping edge 3124 on the receiving seat 312. When the buckle 30 is in the first position, the clamping edge 3124 restricts the buckle 30 from leaving the first position by abutting against the clamping projection 343. When the user needs to loosen the drawstring 20, the user can pull the buckle 30 outward from the first position to the second position with force. During this process, the clamping projection 343 applies a force to the part where the clamping edge 3124 is located to deform it, so that the clamping projection 343 leaves the position where it abuts against the clamping edge 3124. When the drawstring 20 needs to be tightened again, press the buckle 30 forcefully so that the clamping projection 343 and the clamping edge 3124 form a fit again.

[0058] The rotary knob 34 converts the rotational motion into the rotation of the winding wheel 32 by meshing with the first tooth part 321 and the second tooth part 341 of the winding wheel 32, so as to tighten or loosen the drawstring 20; the cooperation between the elastic pawl 33 and the ratchet part 342 forms a one-way locking mechanism to prevent the rotary knob 34 from rotating in the reverse direction and ensure the stability after the drawstring 20 is tightened; the switching of the rotary knob 34 between the first position and the second position provides flexible control of tightening and loosening, optimizing the operation experience. The technical effect of this design is that: the precise mechanical structure of the buckle 30 realizes the precise control of the tension of the drawstring 20. The user can complete the adjustment of the waistband tightness by simply rotating, avoiding the cumbersome operation of tying the traditional drawstring 20. At the same time, the locking mechanism ensures the stability of the adjusted tension, significantly improving the convenience, reliability and user experience of the waistband adjustment.

[0059] Furthermore, the base 31 is fixedly arranged on the lining of the waistband 10, and the rotary knob 34 is exposed outside the outer lining of the waistband 10. Fixing the base 31 on the lining can hide most of the mechanical structures, avoid the protrusion or wear of the internal parts on the outside of the waistband 10, and ensure the overall stability of the buckle 30; the rotary knob 34 being exposed outside the outer lining is convenient for the user to directly operate and complete the adjustment without turning over the clothes. The technical effect of this design is that: the internal and external layered design of the buckle 30 not only ensures the convenience and intuitiveness of the waistband adjustment operation, but also maintains the flatness and beauty of the outside of the trousers, reduces the interference of the buckle 30 on the wearing comfort, and comprehensively improves the practicality and appearance quality of the trousers.

[0060] An embodiment of the present invention relates to a pair of pants that is convenient for adjusting the waistband tightness. The core of its technical solution lies in the combined design of a drawstring 20 and a rotary buckle 30 to achieve convenient adjustment of the waistband tightness. 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-like structure with a preset width, which can provide a larger contact area in the width direction of the waistband 10, so that the pulling force can be more evenly distributed when tightened, avoiding deformation, wrinkles or user discomfort of the waistband 10 caused by local stress concentration; the second tightening section 23 is a thin string-like shape, suitable for connecting with the rotary buckle 30 to facilitate the tightening operation of the rotary buckle 30; the connecting section 22 plays a connecting and transitional role, ensuring the stability of the overall structure of the drawstring 20, and can also prevent the width of the first tightening section 21 from narrowing due to the pulling of the second tightening section 23, resulting in a reduction in the contact area. The rotary buckle 30 is connected to the second tightening section 23 through a rotary self-locking mechanism, and uses the mechanical principle of rotation to convert the rotational motion into a linear tightening or loosening motion of the drawstring 20. The locking function of the rotary buckle 30 prevents the drawstring 20 from rebounding, ensuring the stability after adjusting the waistband tightness. In addition, the design of the drawstring 20 can be fixed at one end to the waistband 10 or surround the waistband 10 and connect the rotary buckles 30 at both ends, providing a flexible force distribution method and enhancing the overall restraint effect of the drawstring 20 on the waistband 10. For the pants that are convenient for adjusting the waistband tightness provided by this technical solution, on the one hand, through the rotary self-locking mechanism of the rotary buckle 30, the user can quickly and accurately adjust the waistband tightness, with simple operation and no need to disassemble the knot, improving the usability; on the other hand, the combination of the strip-like design of the drawstring 20 and the rotary buckle 30 optimizes the force distribution, reduces the uneven local force on the waistband 10, and improves the wearing comfort and the durability of the waistband structure.

[0061] The above description of the specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, in combination with common general knowledge, ordinary technical knowledge in this field and / or existing technology, through logical analysis, reasoning or limited experiments, can obtain modifications, equivalent replacements or other improvements to the embodiments of the present invention or some of its technical features, which should all be included within the protection scope of the present invention.

Claims

1. A pair of trousers that are easy to adjust the tightness of the waist, comprising a waistband (10), characterized in that include: a drawstring (20) which is inserted into the waistband (10) and comprises a first tightening section (21), a connecting section (22) and a second tightening section (23); the first tightening section (21) is in the shape of a belt with a preset width in the width direction of the waistband (10), the second tightening section (23) is in the shape of a thin rope, and the connecting section (22) is respectively connected to the first tightening section (21) and the second tightening section (23) at both ends in the length direction of the waistband (10); and A rotating buckle (30) is fixedly mounted on the waistband (10) and connected to the second tightening section (23) of the drawstring (20) so as to tighten or loosen the drawstring (20) by rotating it for self-locking; One end of the first tightening section (21) of the drawstring (20) away from the connecting section (22) is connected to the waistband (10), or the drawstring (20) surrounds the waistband (10) and is connected to the turn buckle (30) through two second tightening sections (23) located at both ends of the drawstring (20) in the length direction.

2. The trousers with easy-to-adjust waist elasticity as claimed in claim 1, characterized in that: The first tightening section (21) comprises a plurality of ropes arranged along the width direction of the waistband (10).

3. The trousers with adjustable waist tightness as claimed in claim 2, characterized in that: The number of ropes in the first tightening section (21) is 3 to 8, and the ropes are arranged at fixed intervals along the width direction of the waistband (10).

4. The trousers with easy-to-adjust waist elasticity as claimed in claim 1, characterized in that: The first tightening section (21) is a rope belt which is flattened in the width direction of the waistband (10) and has a preset width.

5. The trousers with adjustable waist tightness as claimed in claim 1, characterized in that: The connecting section (22) is a rope belt which is flattened in the width direction of the waistband (10) and has a preset width, and extends in the length direction of the waistband (10).

6. The trousers with easy-to-adjust waist elasticity as claimed in claim 1, characterized in that: The draw cord (20) includes two groups, each group of the draw cord (20) includes a first tightening section (21), a connecting section (22) and a second tightening section (23), and the end of the first tightening section (21) of each group of the draw cord (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), and the two groups of draw cords (20) cooperate to surround the waistband (10).

7. The trousers with easy-to-adjust waist elasticity as claimed in claim 6, characterized in that: One end of the first tightening section (21) of each group of the drawstrings (20) away from the connecting section (22) is respectively connected to two sides of the front placket (11) of the waistband (10).

8. The trousers with adjustable waist tightness as claimed in claim 1, characterized in that: The turn button (30) is located on the rear side of the waistband (10).

9. The trousers with adjustable waist tightness as claimed in claim 1, characterized in that: The turn button (30) comprises a base (31), a winding wheel (32), an elastic pawl (33) and a knob (34); the base (31) is fixedly mounted on the waistband (10); the winding wheel (32) is rotatably mounted on the base (31) around a first axis, and a first tooth portion (321) is provided on a side thereof facing the knob (34), and the first tightening section (21) is suitable for being wound around the winding wheel (32); the elastic pawl (33) is fixedly mounted on a side of the base (31) facing the knob (34); the knob (34) is rotatably mounted on the base (31) around a first axis, and a second tooth portion (341) suitable for meshing with the first tooth portion (321) and a ratchet portion (342) suitable for cooperating with the elastic pawl (33); The knob (34) slides along the first axis relative to the base (31) between a first position and a second position, and in the first position, the first tooth portion (321) is meshed with the second tooth portion (341) to drive the winding wheel (32) to rotate in a first rotation direction through the knob (34), and in the second position, the first tooth portion (321) is disengaged from the second tooth portion (341) to allow the winding wheel (32) to rotate in a second rotation direction; the elastic pawl (33) is suitable for cooperating with the above-mentioned ratchet portion (342) when the knob (34) is located in the first position so that the knob (34) can only rotate in the first rotation direction; the pull rope (20) is tightened when the winding wheel (32) rotates in the first rotation direction, and the pull rope (20) is loosened when it rotates in the second rotation direction.

10. The trousers with adjustable waist tightness as claimed in claim 9, characterized in that: The base (31) is fixed to the inner lining of the waistband (10), and the knob (34) is exposed from the outer lining of the waistband (10).

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