Curved sleeve and preparation method for garment having curved sleeves

Abstract

A curved sleeve and a preparation method for a garment having curved sleeves. The curved sleeve comprises a first sleeve piece (10) and a second sleeve piece (20). The first sleeve piece (10) is provided with a first sleeve bottom (101) and a first sleeve back (102). The second sleeve piece (20) is provided with a second sleeve bottom (201) and a second sleeve back (202). The curvature of the first sleeve bottom (101) is the same as the curvature of the second sleeve bottom (201) and the curvature of the first sleeve back (102) is the same as the curvature of the second sleeve back (202), both conforming to the natural bending curvature of an arm when a human body leans forward.

Description

Curved sleeve and method for preparing curved sleeve clothing

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 22, 2023, with application number 202311230392.6, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of clothing, for example, to a method for preparing curved sleeves and curved sleeve clothing. Background Art

[0003] There are generally two methods for making sleeves for clothing: one-piece sleeves and two-piece sleeves, each designed according to the desired sleeve type. However, the production process for two-piece sleeves is not only cumbersome and difficult to ensure the curvature is consistent with the body's forward-leaning posture, but also often requires additional fabric or structure for splicing, resulting in an unsightly garment.

[0004] Summary of the Invention

[0005] The present application provides a method for preparing a curved sleeve and a curved sleeve garment, so that the sleeve itself has a natural sleeve shape with a forward leaning posture, meeting the demand of the forward leaning posture of the human arm.

[0006] The present application provides a curved sleeve, comprising:

[0007] A first sleeve piece is provided with a first sleeve bottom and a first sleeve back;

[0008] The second sleeve piece is provided with a second sleeve bottom and a second sleeve back. The curvature of the first sleeve bottom is the same as that of the second sleeve bottom, and the curvature of the first sleeve back is the same as that of the second sleeve back, both of which conform to the natural curvature of the arm when the human body leans forward.

[0009] The present invention provides a method for preparing a curved sleeve garment, comprising:

[0010] Determine the waistline, front and back collar, as well as the front and back armholes to complete the garment;

[0011] After replicating the front armhole and the back armhole on the garment piece, the sleeve cap arc of the curved sleeve is produced;

[0012] Formulate a sleeve bottom line, a sleeve bottom reference line, and a sleeve back reference line according to the sleeve cap arc line, and determine the cutting sizes of the first sleeve piece and the second sleeve piece of the curved sleeve according to the sleeve bottom reference line and the sleeve back reference line;

[0013] The first sleeve piece, the second sleeve piece and the two garment pieces are sewn into a curved sleeve garment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic diagram of the back side of a curved sleeve garment according to an embodiment of the present application;

[0015] FIG2 is a front view of a curved sleeve garment according to an embodiment of the present application;

[0016] FIG3 is a side view of a curved sleeve garment according to an embodiment of the present application;

[0017] FIG4 is a schematic structural diagram of the first sleeve piece in the curved sleeve according to an embodiment of the present application;

[0018] FIG5 is a schematic structural diagram of the second sleeve piece in the curved sleeve according to an embodiment of the present application;

[0019] FIG6 is a schematic diagram of the unfolding of the garment pieces according to an embodiment of the present application;

[0020] FIG7 is a first schematic diagram of a process for preparing a curved sleeve according to an embodiment of the present application;

[0021] FIG8 is a second schematic diagram of the process for preparing a curved sleeve according to an embodiment of the present application;

[0022] FIG9 is a third schematic diagram of the process for preparing a curved sleeve according to an embodiment of the present application;

[0023] FIG10 is a schematic diagram of the preparation of the first sleeve piece of the curved sleeve according to an embodiment of the present application;

[0024] FIG11 is a schematic diagram of the preparation of the second sleeve piece in the curved sleeve described in an embodiment of the present application.

[0025] In the picture:

[0026] 10-first sleeve piece; 20-second sleeve piece; 300-garment piece;

[0027] 101-First sleeve bottom; 102-First sleeve back; 103-First cuff; 104-First shoulder opening;

[0028] 201-second sleeve bottom; 202-second sleeve back; 203-second cuff; 204-second shoulder opening;

[0029] 301-waistline; 302-front side seam; 303-back side seam; 304-front centerline; 305-back centerline; 306-chestline; 307-first reference point; 308-second reference point;

[0030] 311-First intersection point; 312-Front vertical collar point; 313-Front horizontal collar point; 314-Front collar line; 315-Front shoulder width line; 316-First extension line; 317-Front armhole;

[0031] 321-Second intersection point; 322-Back vertical collar point; 323-Back horizontal collar point; 324-Back collar line; 325-Back shoulder width line; 326-Second extension line; 327-Back armhole;

[0032] 315'-front shoulder width auxiliary line; 317'-front armhole auxiliary line; 325'-back shoulder width auxiliary line; 327'-back armhole auxiliary line;

[0033] 401-Sleeve Mountain fixed point; 402-Third reference point; 403-Third intersection point; 404-Fourth intersection point;

[0034] 411-sleeve cap height line; 412-sleeve width line; 413-sleeve center line; 414-cuff line; 415-sleeve elbow line;

[0035] 421-back sleeve cap oblique line; 422-front sleeve cap oblique line; 430-sleeve cap arc line;

[0036] 501-fifth intersection; 502-sixth intersection; 503-seventh intersection;

[0037] 510 - Sleeve bottom line; 520 - Sleeve bottom reference line; 521 - First sleeve bottom arc line; 522 - Second sleeve bottom arc line; 530 - Sleeve back reference line; 531 - First sleeve back arc line; 532 - Second sleeve back arc line;

[0038] 521'-first sleeve bottom auxiliary arc; 531'-first sleeve back auxiliary arc;

[0039] 522'-Second sleeve bottom auxiliary arc; 532'-Second sleeve back auxiliary arc. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0041] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to a fixed connection or a detachable connection, a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, and may refer to internal communication between two elements or an interaction between two elements. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application according to the circumstances.

[0042] In the description of this application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature's horizontal height is higher than the second feature's horizontal height. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature's horizontal height is lower than the second feature's horizontal height.

[0043] The technical solution of this embodiment will be described below with reference to the accompanying drawings and through specific implementation methods.

[0044] As shown in Figures 1 to 11, this embodiment provides a method for preparing a curved sleeve and a garment with curved sleeves. The curved sleeve includes a first sleeve piece 10 and a second sleeve piece 20. The first sleeve piece 10 is provided with a first sleeve bottom 101 and a first sleeve back 102. The second sleeve piece 20 is provided with a second sleeve bottom 201 and a second sleeve back 202. The curvature of the first sleeve bottom 101 and the curvature of the second sleeve bottom 201 are the same, and the curvature of the first sleeve back 102 and the curvature of the second sleeve back 202 are the same, both of which conform to the natural curvature of the arm when the human body leans forward. In another aspect, the method for preparing a garment with curved sleeves includes:

[0045] S1. Formulate the waistline 301, the front collar, the back collar, the front armhole 317 and the back armhole 327 to complete the production of the garment piece 300;

[0046] S2, after replicating the front armhole 317 and the back armhole 327 on the garment piece 300, make the sleeve cap arc 430 of the curved sleeve;

[0047] S3. Develop a sleeve bottom line 510, a sleeve bottom reference line 520, and a sleeve back reference line 530 based on the sleeve cap arc line 430, and determine the cutting dimensions of the first sleeve piece 10 and the second sleeve piece 20 of the curved sleeve based on the sleeve bottom reference line 520 and the sleeve back reference line 530.

[0048] S4. Sew the first sleeve piece 10, the second sleeve piece 20 and the two garment pieces 300 into a curved sleeve garment.

[0049] In this embodiment, the entire structure of the curved sleeve is completed by sewing the first sleeve piece 10 and the second sleeve piece 20 together. The first sleeve piece 10 is provided with a first sleeve bottom 101 and a first sleeve back 102, and the second sleeve piece 20 is provided with a second sleeve bottom 201 and a second sleeve back 202. The first sleeve bottom 101 and the second sleeve bottom 201 have the same curvature, and the first sleeve back 102 and the second sleeve back 202 have the same curvature. All four curvatures conform to the natural curvature of the human arm when leaning forward. Thus, the design of the sleeve shape of the first sleeve piece 10 and the second sleeve piece 20 alone can give the curved sleeve a natural sleeve shape that allows for a forward leaning posture, effectively improving the user experience, and increasing production efficiency and yield. On the other hand, for the curved sleeve garment, the garment piece 300 can be quickly and efficiently manufactured by sequentially establishing the waistline 301, the front collar, and the back collar. The sewing of the two garment pieces 300 completes the main structure of the curved sleeve garment. By replicating the front armhole 317 and the back armhole 327 on the garment piece 300, the sleeve cap arc 430 can be produced. According to the position of the sleeve cap arc 430, the sleeve bottom line 510, the sleeve bottom reference line 520 and the sleeve back reference line 530 are correspondingly formulated. The cutting size of the first sleeve piece 10 and the second sleeve piece 20 can be quickly confirmed to ensure the accurate connection between the two and the garment piece 300.

[0050] The structure of the curved sleeve in this embodiment is described below.

[0051] As shown in Figures 1 to 5, in this embodiment, the curved sleeve includes a first sleeve piece 10 and a second sleeve piece 20, and the first sleeve piece 10 is provided with a first sleeve bottom 101, a first sleeve back 102, a first cuff 103 and a first shoulder opening 104, and the second sleeve piece 20 is provided with a second sleeve bottom 201, a second sleeve back 202, a second cuff 203 and a second shoulder opening 204.

[0052] In this embodiment, the first sleeve base 101 and the first sleeve back 102 are both curved, and the length of the first sleeve base 101 is shorter than the length of the first sleeve back 102. Similarly, the second sleeve base 201 and the second sleeve back 202 are both curved, and the length of the second sleeve base 201 is shorter than the length of the second sleeve back 202. Furthermore, the length and curvature of the first sleeve base 101 and the second sleeve base 201 are identical, and the length and curvature of the first sleeve back 102 and the second sleeve back 202 are identical, thereby ensuring that corresponding two of the four elements can be sewn together to form a curved sleeve. The curvature of the first sleeve base 101, the second sleeve base 201, the first sleeve back 102, and the second sleeve back 202 all conform to the natural curvature of the human arm when leaning forward, thereby ensuring a comfortable fit for the user, simplifying the structure of the curved sleeve, and ensuring that it naturally adapts to the movement of the human arm when leaning forward, thereby improving comfort. Optionally, the length of the first cuff 103 is the same as the length of the second cuff 203. The first cuff 103 is located between the first sleeve bottom 101 and the first sleeve back 102, and the second cuff 203 is located between the second sleeve bottom 201 and the second sleeve back 202, for the user's hand movement. The first shoulder opening 104 is configured as a convex structure, located at the end of the first sleeve bottom 101 and the first sleeve back 102 away from the first cuff 103, and the second shoulder opening 204 is configured as a concave structure, located at the end of the second sleeve bottom 201 and the second sleeve back 202 away from the second cuff 203. In this embodiment, the first shoulder opening 104 and the second shoulder opening 204 are both connected to the garment body 300 to ensure the stable sewing of the curved sleeve in the garment. Optionally, the first shoulder opening 104 is located on the outside of the curved sleeve to protect the side of the user's arm away from the body and the shoulder, while the second shoulder opening 204 is located on the inside of the curved sleeve near the garment body 300 to protect the inside of the user's arm.

[0053] The following describes the method for preparing the curved sleeve garment in the present embodiment.

[0054] 6 to 11 , the method for preparing the curved sleeve garment in this embodiment includes:

[0055] S1. Formulate the waistline 301, the front collar, the back collar, the front armhole 317 and the back armhole 327 to complete the production of the garment piece 300;

[0056] S2, after replicating the front armhole 317 and the back armhole 327 on the garment piece 300, make the sleeve cap arc 430 of the curved sleeve;

[0057] S3. Develop a sleeve bottom line 510, a sleeve bottom reference line 520, and a sleeve back reference line 530 based on the sleeve cap arc line 430, and determine the cutting dimensions of the first sleeve piece 10 and the second sleeve piece 20 of the curved sleeve based on the sleeve bottom reference line 520 and the sleeve back reference line 530.

[0058] S4. Sew the first sleeve piece 10, the second sleeve piece 20 and the two garment pieces 300 into a curved sleeve garment.

[0059] As shown in FIG6 , step S1 includes:

[0060] S1.1. A waistline 301 is drawn horizontally, and a front centerline 304 and a back centerline 305 are drawn perpendicular to the waistline 301 at both ends of the waistline 301;

[0061] S1.2. Develop a chest line 306 parallel to the waist line 301, set a first reference point 307 at the midpoint of the chest line 306, and develop a front panel side seam line 302 and a back panel side seam line 303 with the first reference point 307 as the starting point.

[0062] S1.3. Setting a second reference point 308 in the vertical direction at a first preset distance from the first reference point 307;

[0063] S1.4. A front open collar is provided at the top of the front center line 304, and a rear open collar is provided at the top of the rear center line 305;

[0064] S1.5. A front armhole 317 is defined based on the front collar and the second reference point 308 , and a back armhole 327 is defined based on the back collar and the first reference point 307 , thereby completing the production of the garment piece 300 .

[0065] For example, in this embodiment, the length of waistline 301 is set to the user's chest circumference length / 2 + 4cm. For example, if the user's chest circumference is 88cm, the length of waistline 301 is 88cm / 2 + 4cm = 48cm. The length of front centerline 304 is equal to the length of the human front waist segment, which is set to 41cm in this embodiment. Similarly, the length of back centerline 305 is equal to the length of the human back waist segment, which is set to 40cm in this embodiment. Optionally, chest line 306 and waistline 301 are separated by a certain distance, which is 15.5cm in this embodiment. This also allows the position of first reference point 307 to be determined, and second reference point 308 is set vertically at a first preset distance to be used for subsequent armhole size drawing. Optionally, two front side seams 302 and back side seams 303 with an angled starting point are established with first reference point 307 as the starting point to serve as the side seams of the front and back panels. The angle is used to set the waist suction, and the value can be set as needed.

[0066] A first set line with a length of chest circumference / 4 is drawn horizontally at the endpoint of the front center line 304. Optionally, the intersection of the first set line and the front center line 304 is set as a first intersection point 311, and a front straight collar point 312 is set on the front center line 304 at a distance of 7 cm from the first intersection point 311. A front horizontal collar point 313 is set on the first set line at a distance of 6.8 cm from the first intersection point 311. An arc is thus formed connecting the front straight collar point 312 and the front horizontal collar point 313 to form a front collar line 314, thereby achieving the setting of a front collar in the garment piece 300 of the curved sleeve garment.

[0067] A second set line with a length of chest circumference / 4 is drawn horizontally at the endpoint of rear centerline 305. Optionally, the intersection of the second set line and rear centerline 305 is set as second intersection point 321, and a rear straight collar point 322 is set on rear centerline 305 at a distance of 2.5 cm from second intersection point 321. A rear horizontal collar point 323 is set on the second set line at a distance of 7.5 cm from second intersection point 321. An arc connects rear straight collar point 322 and rear horizontal collar point 323 to form rear collar line 324, thereby achieving the rear collar setting in garment piece 300 of the curved sleeve garment. Connecting the two front collars and the two rear collars of the two garment pieces 300 can complete the neckline setting of the curved sleeve garment.

[0068] As shown in Figure 6, with the front horizontal collar point 313 as the starting point, draw a front shoulder width line 315 with an angle of 22° to the first set line and a length of 12.4 cm, and draw a first extension line 316 with a length of 2 cm in the horizontal direction from the end point of the front shoulder width line 315 toward the front center line 304, and with the end point of the first extension line 316 as the starting point, draw a perpendicular line in the vertical direction and intersect the oblique line where the second reference point 308 is located at one point, take the midpoint of the line connecting this point and the end point of the first extension line 316, the second reference point 308 and the end point of the front shoulder width line 315, and connect them with an arc to form a front armhole 317, which is convenient for the subsequent connection of the curved sleeve.

[0069] Similarly, with the front and back horizontal collar point 323 as the starting point, draw a back shoulder width line 325 with an angle of 19° to the second setting line and a length of 12.7 cm, and draw a second extension line 326 with a length of 1.5 cm in the horizontal direction from the end point of the back shoulder width line 325 toward the back center line 305, and with the end point of the second extension line 326 as the starting point, draw a perpendicular line in the vertical direction and intersect the chest line 306 at one point, take the midpoint of the line connecting this point and the end point of the second extension line 326, the first reference point 307 and the end point of the back shoulder width line 325, and connect them with an arc to form a back armhole 327, which is convenient for the subsequent connection of the curved sleeves, thereby completing the overall setting of the garment piece 300.

[0070] Step S2 includes:

[0071] S2.1. Re-engraving the front armhole 317 as the front armhole auxiliary line 317', and re-engraving the back armhole 327 as the back armhole auxiliary line 327', so that one end of the front armhole auxiliary line 317' and the back armhole auxiliary line 327' coincide with the third reference point 402;

[0072] S2.2. Set a sleeve cap fixed point 401 vertically at a second predetermined distance from the third reference point 402, connect the sleeve cap fixed point 401 and the third reference point 402, and extend the sleeve midline 413 to define the sleeve. Also, define a sleeve fat line 412 perpendicular to the sleeve midline 413 at the third reference point 402.

[0073] S2.3. Draw a circle with the sleeve cap fixed point 401 as the center and the distance between the third reference point 402 and the corner point of the back armhole auxiliary line 327' as the radius, intersecting the sleeve fat line 412 at the third intersection point 403.

[0074] S2.4. Draw a circle with the sleeve cap fixed point 401 as the center and the distance between the third reference point 402 and the corner point of the front armhole auxiliary line 317' as the radius, intersecting the sleeve fat line 412 at the fourth intersection point 404;

[0075] S2.5. Create the sleeve cap arc 430 of the curved sleeve based on the third intersection 403 and the fourth intersection 404.

[0076] As shown in Figure 7, the front armhole 317, the back armhole 327, the front shoulder width line 315 and the back shoulder width line 325 are copied respectively to make the front armhole auxiliary line 317', the back armhole auxiliary line 327', the front shoulder width auxiliary line 315' and the back shoulder width auxiliary line 325' to set the relevant dimensions of the curved sleeve. Optionally, the front armhole auxiliary line 317' and the back armhole auxiliary line 327' intersect at the third reference point 402, and the sleeve cap fixed point 401 is set vertically upward and spaced apart from the third reference point 402. Exemplarily, the length of the sleeve cap height line 411 after the sleeve cap fixed point 401 and the third reference point 402 are connected is the value of (the length of the front armhole auxiliary line 317'+the length of the back armhole auxiliary line 327') / 3. The sleeve cap height line 411 is extended to draw the sleeve center line 413. In this embodiment, the length of the sleeve center line 413 is set to 59cm. Optionally, a sleeve excess line 412 is set at the third reference point 402 and extends leftward and rightward along the horizontal direction, and the third reference point 402 is located at the midpoint of the sleeve excess line 412 .

[0077] As shown in Figures 8 and 7 , with the sleeve cap fixed point 401 as the center, and the distance between the intersection of the third reference point 402, the front armhole auxiliary line 317', and the front shoulder width auxiliary line 315' as the radius, and the distance between the intersection of the third reference point 402, the armhole auxiliary line 327', and the back shoulder width auxiliary line 325' as the radius, a circle is drawn, and intersects with the sleeve width line 412 at the fourth intersection 404 and the third intersection 403, and then the sleeve cap fixed point 401 and the third intersection 403, as well as the sleeve cap fixed point 401 and the fourth intersection 404, are connected to formulate the back sleeve cap oblique line 421 and the front sleeve cap oblique line 422. A sleeve cap arc line 430 is drawn through the sleeve cap fixed point 401, the back sleeve cap oblique line 421, and the front sleeve cap oblique line 422 to prepare for the subsequent shoulder size of the curved sleeve. Alternatively, parallel lines are drawn 17 cm apart downward from the sleeve fat line 412 to define a sleeve elbow line 415, and a line parallel to the sleeve fat line 412 is drawn at the bottom end of the sleeve center line 413 to define a cuff line 414. Alternatively, parallel lines are drawn to the sleeve center line 413 starting from the third intersection 403 and the fourth intersection 404 to serve as sleeve bottom seam lines.

[0078] Optionally, step S3 includes:

[0079] S3.1. A sleeve bottom line 510 parallel to the sleeve center line 413 is provided on one side of the sleeve center line 413 , and the sleeve bottom line 510 intersects with the sleeve fat line 412 at a fifth intersection 501 .

[0080] S3.2. A sleeve bottom reference line 520 parallel to the sleeve bottom line 510 is provided at a distance from the sleeve center line 413 , and the sleeve bottom reference line 520 intersects the sleeve cap arc line 430 at a sixth intersection 502 .

[0081] S3.4. A sleeve back reference line 530 is disposed parallel to the sleeve bottom line 510 and spaced apart from the sleeve bottom line 510 where the sleeve center line 413 is disposed. The sleeve back reference line 530 intersects the sleeve cap arc line 430 at a seventh intersection 503, and the sleeve center line 413 is located between the sleeve bottom line 510 and the sleeve back reference line 530.

[0082] S3.5. Develop a symmetrical sleeve cap arc 430 that passes through the fifth intersection 501, the sixth intersection 502, and the seventh intersection 503 in sequence for the arc of the second shoulder opening 204 of the second sleeve piece 20;

[0083] S3.6. A first sleeve bottom arc 521 and a second sleeve bottom arc 522 are spaced apart on both sides of the sleeve bottom reference line 520, and a first sleeve back arc 531 and a second sleeve back arc 532 are spaced apart on both sides of the sleeve back reference line 530. The curvatures of the first sleeve bottom arc 521 and the second sleeve bottom arc 522 are the same, and the curvatures of the first sleeve back arc 531 and the second sleeve back arc 532 are the same, so as to determine the cutting sizes of the first sleeve piece 10 and the second sleeve piece 20 in the curved sleeve.

[0084] As shown in Figure 9, a line parallel to the sleeve centerline 413 is drawn on the right side of the sleeve centerline 413 to form a sleeve base line 510. The intersection of the sleeve base line 510 and the sleeve fat line 412 is set as the fifth intersection 501. For example, the distance between the sleeve centerline 413 and the sleeve base line 510 is set to 4 cm. Starting from the midpoint of the line connecting the fifth intersection 501 and the fourth intersection 404, a line parallel to the sleeve base line 510 is drawn to form a sleeve bottom reference line 520. The sleeve bottom reference line 520 is extended until it intersects the sleeve cap arc 430 at the sixth intersection 502. Similarly, starting from the midpoint of the line connecting the fifth intersection 501 and the third intersection 403, a line parallel to the sleeve base line 510 is drawn to form a sleeve back reference line 530. The sleeve back reference line 530 is extended until it intersects the sleeve cap arc 430 at the seventh intersection 503. Therefore, the sleeve cap arc 430 is symmetrically arranged to pass through the fifth intersection 501 , the sixth intersection 502 and the seventh intersection 503 , thereby obtaining a downwardly concave curve.

[0085] In this embodiment, the intervals between the first sleeve bottom arc 521 and the sleeve bottom reference line 520, as well as the intervals between the second sleeve bottom arc 522 and the sleeve bottom reference line 520, are the same, and the intervals between the first sleeve back arc 531 and the sleeve back reference line 530, as well as the intervals between the second sleeve back arc 532 and the sleeve back reference line 530 are the same, and the first sleeve bottom arc 521 and the second sleeve bottom arc 522 are both set to be concave inward, and the first sleeve back arc 531 and the second sleeve back arc 532 are both set to be convex outward, and the curvatures of the four are consistent with the natural bending curvature of the arm when the human body leans forward, so as to facilitate the subsequent bending of the bent sleeve to meet the user's bent arm use.

[0086] To prevent the sleeve bottom seam from being exposed, the bottom seams need to be drawn in parallel. A first sleeve bottom arc 521 and a second sleeve bottom arc 522 are drawn parallel to each other, 3 cm apart, on either side of the sleeve bottom reference line 520. The spacing between the first and second sleeve bottom arcs and the sleeve bottom reference line 520 remains constant, at 3 cm. Similarly, a first sleeve back arc 531 and a second sleeve back arc 532 are drawn parallel to each other, 3 cm apart, on either side of the sleeve back reference line 530, on the upper section of the sleeve elbow line 415. The lower sections of the first and second sleeve back arcs 531 and 532 are drawn parallel to each other, 1.5 cm apart, to ensure the cuff size.

[0087] In conjunction with shown in Figure 10 and Figure 11, respectively copy the first sleeve bottom arc 521, the second sleeve bottom arc 522, the first sleeve back arc 531 and the second sleeve back arc 532 to obtain the first sleeve bottom auxiliary arc 521', the second sleeve bottom auxiliary arc 522', the first sleeve back auxiliary arc 531' and the second sleeve back auxiliary arc 532', and copy the sleeve cap arc 430 and the second shoulder opening 204 radian of the second sleeve piece 20 symmetrical with the sleeve cap arc 430. In conjunction with shown in Figure 1-Figure 5, the first sleeve bottom 101, the first sleeve back 102, the first cuff 103 and the first shoulder opening 104 of the first sleeve piece 10, and the second sleeve bottom 201, the second sleeve back 202, the second cuff 203 and the second shoulder opening 204 of the second sleeve piece 20 are obtained to achieve the sewing of the curved sleeve. The two curved sleeves and the two garment pieces 300 are sewn in sequence to complete the production of the curved sleeve garment.

Claims

1. A curved sleeve, comprising: A first sleeve piece (10) is provided with a first sleeve bottom (101) and a first sleeve back (102); The second sleeve piece (20) is provided with a second sleeve bottom (201) and a second sleeve back (202); the curvature of the first sleeve bottom (101) is the same as the curvature of the second sleeve bottom (201); the curvature of the first sleeve back (102) is the same as the curvature of the second sleeve back (202), and both conform to the natural curvature of the arm when the human body leans forward.

2. The curved sleeve according to claim 1, wherein: The length of the first sleeve bottom (101) is shorter than the length of the first sleeve back (102), and the length of the second sleeve bottom (201) is shorter than the length of the second sleeve back (202).

3. The curved sleeve according to claim 1, wherein: The first sleeve piece (10) is further provided with a first cuff (103), and the second sleeve piece (20) is further provided with a second cuff (203), and the first cuff (103) and the second cuff (203) are of the same length.

4. The curved sleeve according to claim 1, wherein: The first sleeve piece (10) is also provided with a first shoulder opening (104) which is convex outwards, and the second sleeve piece (20) is also provided with a second shoulder opening (204) which is concave inwards, the first shoulder opening (104) and the second shoulder opening (204) are both connected to the garment piece (300), and the first shoulder opening (104) is located on the outer side of the curved sleeve, and the second shoulder opening (204) is located on the inner side of the curved sleeve close to the garment piece (300).

5. A method for preparing a curved sleeve garment, comprising: A waistline (301), a front collar, a back collar, a front armhole (317) and a back armhole (327) are formed to complete the production of the garment piece (300); After replicating the front armhole (317) and the back armhole (327) on the garment piece (300), the sleeve cap arc (430) of the curved sleeve as claimed in any one of claims 1 to 4 is manufactured; According to the sleeve cap arc line (430), a sleeve bottom line (510), a sleeve bottom reference line (520) and a sleeve back reference line (530) are formulated, and the cutting sizes of the first sleeve piece (10) and the second sleeve piece (20) in the curved sleeve are determined according to the sleeve bottom reference line (520) and the sleeve back reference line (530); The first sleeve piece (10), the second sleeve piece (20) and the two garment pieces (300) are sewn together to form the curved sleeve garment.

6. The method according to claim 5, wherein: The process of making the waistline (301), the front collar, the back collar, the front armhole (317) and the back armhole (327) to complete the production of the garment piece (300) includes: A waistline (301) is drawn in the horizontal direction, and a front centerline (304) and a rear centerline (305) are drawn at two ends of the waistline (301) perpendicular to the waistline (301); A chest line (306) is defined parallel to the waist line (301), and a A first reference point (307) is set at the midpoint, and a front panel side seam line (302) and a back panel side seam line (303) are established with the first reference point (307) as a starting point; A second reference point (308) is set in the vertical direction at a first preset distance from the first reference point (307); A front open collar is arranged at the top of the front center line (304), and a rear open collar is arranged at the top of the rear center line (305); A front armhole (317) is formulated according to the front collar and the second reference point (308), and a rear armhole (327) is formulated according to the rear collar and the first reference point (307), thereby completing the production of the garment piece (300).

7. The method according to claim 5, wherein: After the front armhole (317) and the back armhole (327) are formed on the replica garment piece (300), the sleeve cap arc (430) of the curved sleeve described in any one of claims 1 to 4 is produced, comprising: The front armhole (317) is replicated as a front armhole auxiliary line (317'), and the back armhole (327) is replicated as a back armhole auxiliary line (327'), so that one end of the front armhole auxiliary line (317') and the back armhole auxiliary line (327') coincide with a third reference point (402); In the vertical direction, a sleeve cap fixed point (401) is set at a second preset distance from the third reference point (402), and a sleeve center line (413) is extended after connecting the sleeve cap fixed point (401) and the third reference point (402), and a sleeve fat line (412) is set perpendicular to the sleeve center line (413) at the third reference point (402); A circle is drawn with the sleeve cap fixed point (401) as the center and the distance between the third reference point (402) and the corner point of the back armhole auxiliary line (327') as the radius, and intersects with the sleeve fat line (412) at a third intersection point (403); A circle is drawn with the sleeve cap fixed point (401) as the center and the distance between the third reference point (402) and the corner point of the front sleeve hole auxiliary line (317') as the radius, and intersects with the sleeve fat line (412) at a fourth intersection point (404); The sleeve cap arc line (430) of the curved sleeve described in any one of claims 1 to 4 is produced based on the third intersection point (403) and the fourth intersection point (404).

8. The method according to claim 7, wherein: The method of formulating the sleeve bottom line (510), the sleeve bottom reference line (520) and the sleeve back reference line (530) according to the sleeve cap arc line (430), and determining the cutting sizes of the first sleeve piece (10) and the second sleeve piece (20) in the curved sleeve according to the sleeve bottom reference line (520) and the sleeve back reference line (530) comprises: A sleeve bottom line (510) parallel to the sleeve center line (413) is arranged at intervals on one side of the sleeve center line (413), and the sleeve bottom line (510) intersects with the sleeve fat line (412) at a fifth intersection (501); A sleeve bottom reference line (520) parallel to the sleeve bottom line (510) is arranged at a distance from the sleeve center line (413) on the side of the sleeve bottom line (510) away from the sleeve center line (413), and the sleeve bottom reference line (520) intersects with the sleeve cap arc line (430) at a sixth intersection (502); A sleeve back reference line (530) parallel to the sleeve back bottom line (510) is arranged at a distance on one side of the sleeve back bottom line (510) where the sleeve center line (413) is arranged, and the sleeve back reference line (530) intersects with the sleeve top arc line (430) at a seventh intersection (503), and the sleeve center line (413) is located between the sleeve back bottom line (510) and the sleeve back reference line (530); Formulate the arc of the second shoulder opening (204) of the second sleeve piece (20) which is symmetrical to the sleeve cap arc (430) and passes through the fifth intersection (501), the sixth intersection (502) and the seventh intersection (503) in sequence; A first sleeve bottom arc (521) and a second sleeve bottom arc (522) are arranged at intervals on both sides of the sleeve bottom reference line (520), and a first sleeve back arc (531) and a second sleeve back arc (532) are arranged at intervals on both sides of the sleeve back reference line (530), and the curvatures of the first sleeve bottom arc (521) and the second sleeve bottom arc (522) are the same, and the curvatures of the first sleeve back arc (531) and the second sleeve back arc (532) are the same, so as to determine the cutting sizes of the first sleeve piece (10) and the second sleeve piece (20) in the curved sleeve.

9. The method according to claim 8, wherein: The intervals between the first sleeve bottom arc line (521) and the sleeve bottom reference line (520), as well as the intervals between the second sleeve bottom arc line (522) and the sleeve bottom reference line (520) are the same, and the intervals between the first sleeve back arc line (531) and the sleeve back reference line (530), as well as the intervals between the second sleeve back arc line (532) and the sleeve back reference line (530) are the same.

10. The method according to claim 8, wherein: The first sleeve bottom arc (521) and the second sleeve bottom arc (522) are both arranged to be concave inwards, the first sleeve back arc (531) and the second sleeve back arc (532) are both arranged to be convex outwards, and the curvatures of the four are consistent with the natural bending curvature of the arm when the human body leans forward.

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