A straight cut pant pattern

Abstract

The utility model discloses a straight trousers pattern, including front piece and back piece, the back piece forms the back corner seam, the back corner seam is in the intersection of the hip line of back piece with the back corner seam's inclination angle is back difficult angle, the back corner seam's back difficult angle is 5~13.1 DEG, the front piece of front piece trousers midline compares the front cross rail line midline and is designed in section outward deviation, the back piece of back piece trousers midline compares the back cross rail line midline and is designed in section outward deviation, the recess of front piece's front knee circumference is less than or equal to 0.5cm, the recess of back piece's back knee circumference is less than or equal to 0.5cm, the outside seam of front piece is straight, the outside seam of back piece is straight. The utility model discloses a straight trousers pattern, through the design of back difficult angle, can eliminate trousers side hip bulge and back middle hip pile amount hook crotch's mutual repulsion phenomenon. Make the crotch bottom be relatively flat, and trousers side hip is straight. And, through the section deviation design to trousers midline, make the outside seam of trousers pattern straight.

Description

Technical Field

[0001] This utility model relates to the technical field of garment engineering structural design, and in particular to a straight trouser pattern. Background Technology

[0002] like Figure 1 As shown, in the design of trousers, there is a contradiction and balance problem between the side hip protrusion 1 (problem 1) and the back hip gathering, crotch bottom diagonal button 3, wrinkles, and unevenness (problem 2).

[0003] When the traditional back crotch angle (back tuck angle) is small (e.g., 3°), the above-mentioned problem of the crotch bottom button is solved, but it will cause the hip circumference on the side of the pants to bulge out (the hip circumference is not straight and bulges outward); when the back crotch angle (back tuck angle) is large (e.g., 16°), the problem of the hip circumference on the side of the pants to bulge out is solved, but it will cause the crotch bottom button to bulge out.

[0004] In addition, traditional trouser designs also have the problem of the side knee area being concave from the outside in. The concavity depth can reach more than 1.5cm, and the curvature of the outer seam of the trousers is obvious.

[0005] In view of this, the inventor of this case conducted in-depth research, which led to the creation of this case. Utility Model Content

[0006] The purpose of this invention is to provide a trouser pattern with straight outer seams.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A straight trouser pattern includes a front piece and a back piece, wherein the back piece forms a back crotch seam, and the inclination angle of the back crotch seam at the intersection of the hip line of the back piece and the back crotch seam is a back entrapment angle, wherein the back entrapment angle of the back crotch seam is 5° to 13.1°. The center line of the front panel is designed to be offset outward in segments from the center line of the front crotch, with the offset at the front hem being less than the offset at the front crotch; the center line of the back panel is designed to be offset outward in segments from the center line of the back crotch, with the offset at the back hem being less than the offset at the back crotch. The offset of the center line of the back piece is correspondingly greater than the offset of the center line of the front piece. The indentation at the front knee circumference of the front piece is less than or equal to 0.5 cm, and the indentation at the rear knee circumference of the rear piece is less than or equal to 0.5 cm. The outer seam of the front piece is straight along the outer hip circumference, outer knee circumference, and outer leg opening, and the outer seam of the back piece is straight along the outer hip circumference, outer knee circumference, and outer leg opening.

[0008] Furthermore, The lateral displacement distance of the midpoint of the front crossbar is S1, and the lateral displacement point of the front crossbar is A'. The lateral displacement distance of the midpoint of the front knee circumference of the front piece is S1, and the lateral displacement point of the front knee circumference is B'. The lateral displacement distance of the midpoint of the front foot opening line of the front piece is S1*(0.5~0.8), and the lateral displacement point of the front foot opening line is C`; The front crossbar lateral shift point A', the front knee circumference line lateral shift point B', and the front hemline lateral shift point C' are connected in sequence to form the front pant center line; The distance the rear crossbar is shifted outward from the midpoint of the rear crossbar is S2, and the lateral shift point of the rear crossbar is D`. The distance by which the midpoint of the rear knee circumference of the rear piece is shifted outward is S2, and the lateral shift point of the rear knee circumference is E'; The distance by which the midpoint of the rear foot opening line of the rear piece is shifted outward is S2*(0.5~0.8), and the lateral shift point of the rear foot opening line is F`; S2 is greater than S1, and S2 is less than 4*S1; The rear crossbar lateral shift point D', the rear knee circumference lateral shift point E', and the rear hemline lateral shift point F' are connected in sequence to form the center line of the rear pant piece.

[0009] Furthermore, the rear trap angle is 5.7°~9.5°.

[0010] Furthermore, the total width of the front crossbar of the front piece = hip circumference / 4 - 1cm + 0.045 * hip circumference, and the total width of the back crossbar of the back piece = hip circumference / 4 + 1cm + 0.11 * hip circumference, where 1 ranges from 1 to 2.5cm.

[0011] Furthermore, the total width of the front crossbar of the front piece is 29.3cm, the total width of the rear crossbar is 40.2cm; the front knee circumference is 20cm, the rear knee circumference is 26cm, the front instep is 15cm, and the rear instep is 19cm. S2 = 2 * S1, S1 is 1 cm, and the rear trap angle is 8.5°.

[0012] After adopting the above technical solution, the straight trouser pattern of this utility model has the following beneficial effects: The design of the back tuck angle eliminates the mutually exclusive phenomenon of the side hip circumference protruding and the back center hip circumference bunching up and catching the crotch. This results in a flatter crotch and straighter side hip circumference. Furthermore, through the segmented offset design of the trouser center line, based on the gradual dynamic balance theory, the offset amount of the trouser center line is decomposed into segments at the knee and hem, making the offset rate of the hip-knee-ankle segments gradually change. This solves the problem of the traditional side knee circumference being significantly concave from the outside to the inside. This utility model, through the combined design of the back tuck angle and the segmented offset of the trouser center line, makes the trouser side straight from the side hip circumference to the side knee circumference and then to the hem, resulting in a beautiful and elegant trouser pattern. It effectively improves the problem of uneven side seams and poor leg shape caused by the concave side knee circumference. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the trouser structure in the background art; Figure 2 This is a schematic diagram of the trouser pattern structure of this utility model; Figure 3 This is a schematic diagram of the trouser structure of this utility model. Detailed Implementation

[0014] A straight-leg trousers design, such as Figure 2 and Figure 3 As shown, the back panel includes a front piece 1a and a back piece 1b. The back piece 1b has a back crotch seam 05. The angle of inclination of the back crotch seam 05 at the intersection of the hip line 04 and the back crotch seam 05 on the back piece 1b is the back constriction angle f. The back constriction angle of the back crotch seam 05 is 5°~13.1°. The back constriction angle is the angle of inclination of the back crotch seam 05 at the intersection of the hip line 08 and the back crotch seam 05 on the back piece (the angle between the back crotch seam 05 and the vertical direction at this intersection).

[0015] The center line g' (green line) of the front panel 1a is segmented and offset outwards from the center line g (red line) of the front crotch. Similarly, the center line h' (green line) of the back panel 1b is segmented and offset outwards from the center line h (red line) of the back crotch. Specifically, the offset at the front hem is less than the offset at the front crotch; and the offset at the back hem is less than the offset at the back crotch. The offset of the center line h' of the back piece 1b is greater than the offset of the center line g' of the front piece 1a.

[0016] The indentation at the front knee circumference of the front piece 1a is less than or equal to 0.5cm, and the indentation at the rear knee circumference of the rear piece 1b is ( Figure 3 The depression in area 5) is less than or equal to 0.5 cm; The outer seam of the front piece 1a is straight along the outer hip circumference, outer knee circumference, and outer leg opening; the outer seam of the back piece 1b is straight along the outer hip circumference, outer knee circumference, and outer leg opening.

[0017] This utility model relates to a straight-leg trousers design, which, through the design of the rear tuck angle, such as... Figure 3 As shown, this can eliminate the bulge of the hip area on the side of the pants (such as...). Figure 3 The mutual exclusion phenomenon between the central area (as shown in region 4) and the back mid-hip circumference gathering and crotch hooking. This results in a relatively flat crotch bottom (as shown in region 4). Figure 3 As shown in section 6), the hip circumference of the pants is straight (as shown in section 6). Figure 3 (As shown in regions 4 and 5). Furthermore, through a segmented offset design of the trouser center line, based on the gradual dynamic balance theory, the offset of the trouser center line is decomposed into segments at the knee and hem, making the offset rates of the hip-knee-ankle segments gradually change, thus solving the problem of the traditional upper knee position being noticeably concave from the outside to the inside (e.g., ...). Figure 3 (As shown in area 5, the seam becomes straight). This utility model, through the combination of the back angle and the segmented offset of the center line of the pants, makes the side of the pants straight from the hip circumference to the knee circumference and then to the hem. The pants are beautiful and elegant, and effectively improve the problem of uneven side seams and poor leg shape caused by the concavity of the knee circumference.

[0018] Furthermore, the lateral displacement distance of the midpoint of the front crossbar is S1, and the lateral displacement point of the front crossbar is A'; The lateral displacement distance of the midpoint of the anterior knee circumference line is S1, and the lateral displacement point of the anterior knee circumference line is B'. The lateral displacement distance of the midpoint of the front foot mouth line is S1*0.5, and the lateral displacement point of the front foot mouth line is C`; The front crossbar lateral shift point A`, the front knee circumference line lateral shift point B`, and the front hem line lateral shift point C` are connected in sequence to form the front pant center line g`; The distance S2 is the outermost shift of the midpoint of the rear crossbar, and the lateral shift point of the rear crossbar is D`. The distance S2 is the lateral shift of the midpoint of the posterior knee circumference line, and the lateral shift point of the posterior knee circumference line is E'. The distance by which the midpoint of the hind foot mouth line is shifted outward is S2*0.5, and the lateral shift point of the hind foot mouth line is F`.

[0019] S2 = 2 * S1; The rear crossbar shift point D`, the rear knee circumference shift point E`, and the rear hemline shift point F` are connected in sequence to form the rear trouser center line h`.

[0020] In one preferred embodiment, a trouser pattern can be obtained by a trouser pattern design method based on dynamic ergonomics.

[0021] A method for designing trouser patterns based on dynamic ergonomics includes the following steps: Step S1: Determine the basic pattern of the front and back pieces of the trousers, such as... Figure 2 As shown, determine the basic dimensions of the front piece 1a and the back piece 1b, and draw the front crossbar line 01, the front knee circumference line 02 and the front hem line 03 of the front piece 1a; draw the back crossbar line 04, the back knee circumference line 07 and the back hem line 06 of the back piece 1b. Determine the midpoint A of the front crossbar line, the midpoint B of the front knee circumference line, and the midpoint C of the front foot inlet line; Determine the midpoint D of the rear crossbar line, the midpoint E of the rear knee circumference line, and the midpoint F of the rear foot opening line; Step S2: Set the rear trap angle f of the trousers to 5°~13.1°; Step S3: Perform segmented offset design for the center line of the front trousers; The midpoint of the front crossbar is shifted to the side by a distance S1, and the front crossbar shift point A' is determined. The midpoint of the anterior knee circumference is shifted laterally by a distance S1, and the lateral shift point B' of the anterior knee circumference is determined. Laterally shift the midpoint of the front foot mouth line by S1* (0.5~0.8), specifically 0.5, to determine the lateral shift point C` of the front foot mouth line; Connect the front crossbar lateral shift point A', the front knee circumference line lateral shift point B', and the front hemline lateral shift point C' in sequence to determine the front trouser center line g'; Step S4: Perform segmented offset design for the center line of the back trousers; Move the midpoint of the rear crossbar line outward by a distance S2, and determine the lateral displacement point D' of the rear crossbar. The midpoint of the posterior knee circumference is shifted outward by a distance S2 to determine the lateral shift point E' of the posterior knee circumference. Move the midpoint of the hind foot mouth line outward by S2* (0.5~0.8), specifically 0.5, to determine the lateral shift point F` of the hind foot mouth line; S2 is greater than S1, and S2 is less than 4*S1; Connect the rear crossbar lateral shift point D`, the rear knee circumference line lateral shift point E`, and the rear hemline lateral shift point F` in sequence to determine the rear pant center line h`; To obtain a trouser pattern that conforms to dynamic ergonomics.

[0022] In this invention, the back crotch angle f is the inclination angle of the back crotch seam 05 at the intersection of the hip line 08 of the back piece 1b and the back crotch seam 05 (the angle between the back crotch seam 05 and the vertical direction at this intersection).

[0023] A trouser pattern design method based on dynamic ergonomics finds the golden balance point of the back posture angle f, and controls the back posture angle f to achieve the desired effect. Figure 3 As shown, this can eliminate the bulge of the hip area on the side of the pants (such as...). Figure 3 The mutual exclusion phenomenon between the central area (as shown in region 4) and the back mid-hip circumference gathering and crotch hooking. This results in a relatively flat crotch bottom (as shown in region 4). Figure 3 As shown in area 6), the side seams of the trousers are straight (as shown in the middle area). Figure 3 As shown in regions 4 and 5), the hip and knee circumferences are straight. Furthermore, through a segmented offset design of the center line, based on the gradual dynamic balance theory, the offset of the center line is decomposed into segments at the knee and hem, making the offset rates of the hip-knee-ankle segments gradually change. This solves the problem of the traditional upper knee circumference being noticeably concave from the outside to the inside (as shown in regions 4 and 5). Figure 3 (As shown in the middle area 5, the knee circumference is straight). This utility model, through the combination of the back circumference angle f and the segmented offset of the trouser center line, makes the side of the trousers straight from the hip circumference to the knee circumference and then to the hem. The trousers are beautiful and elegant, and effectively improve the problem of uneven side seams and poor leg shape caused by the hip circumference protruding and the knee circumference concave.

[0024] This method is applicable to the pattern design of trousers such as casual wear and everyday training trousers.

[0025] In traditional trouser designs, the range of motion in the legs is inversely proportional to the front and back crotch slant buttons—increasing the offset can improve freedom of movement, but it inevitably increases the weight of the crotch slant buttons; reducing the offset can make the crotch smooth, but it restricts the range of motion.

[0026] Traditional methods of offsetting the center line of trousers have the following limitations: To allow for greater freedom of movement, the center line is shifted laterally in the pattern design to increase the leg opening. The conventional method involves vertically positioning the front center line at the 1 / 2 front crotch width and then shifting it laterally, centering the center line at the knee and hem. Similarly, the back center line is vertically positioned at the 1 / 2 back crotch width and then shifted laterally, centering it at the knee and hem. However, when the back center line shifts by more than 2.5cm or the front center line shifts by more than 1cm, severe slanted creases (inverted V-shape) appear at the crotch. Insufficient offset, on the other hand, results in uneven side seams and insufficient leg opening (insufficient freedom of movement).

[0027] This invention utilizes a phased offset technology for the center line of trousers. The lateral shift distance of the center line of the front crotch is S1, the lateral shift distance of the center line of the front knee is S1, the lateral shift distance of the center line of the front hem is S1*(0.5~0.8), the lateral shift distance of the center line of the back crotch is S2, the lateral shift distance of the center line of the back knee is S2, and the lateral shift distance of the center line of the back hem is S2*(0.5~0.8), with S2 being greater than S1. This solves the problem of uneven side seams caused by the concavity of the knee. In addition, practical experience has shown that the phased offset design of the center line of trousers can, to a certain extent, avoid or reduce the problem of slanted buttons at the front and back crotches.

[0028] In a preferred embodiment, S1 is less than 3 cm; S2 is 1~5 cm.

[0029] In a preferred embodiment, the rear trap angle f is 5.7°~9.5°.

[0030] In a preferred embodiment, in step S1, when determining the basic pattern of the front and back pieces of the trousers, the total width of the front crossbar is = hip circumference / 4 - 1cm + 0.045 * hip circumference, and the total width of the back crossbar is = hip circumference / 4 + 1cm + 0.11 * hip circumference, where 1 ranges from 1 to 2.5cm.

[0031] In a preferred embodiment, the total width of the front crossbar is 29.3cm, the total width of the rear crossbar is 40.2cm, the front knee circumference is 20cm, the rear knee circumference is 26cm, the front instep is 15cm, and the rear instep is 19cm. S2 = 2 * S1, where S1 is 1 cm and the backward trap angle f is 8.5°.

[0032] This invention utilizes an outward shift of the midpoint of the crotch and the midpoint of the knee circumference to provide sufficient leg opening range for the trousers. Furthermore, by shifting the midpoint of the hem outward, a gradual straightening of the side seams is achieved. By comparison, the knee circumference indentation (from the outside in) depth is reduced from 1.5cm in the conventional design to 0.5cm, improving the straightness of the side seams.

[0033] The above embodiments and accompanying drawings are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A straight trouser pattern, characterized in that: It includes a front piece and a back piece, wherein the back piece forms a back crotch seam, and the inclination angle of the back crotch seam at the intersection of the hip line of the back piece and the back crotch seam is the back trap angle, and the back trap angle of the back crotch seam is 5°~13.1°. The center line of the front panel is designed to be offset outward in segments from the center line of the front crotch, with the offset at the front hem being less than the offset at the front crotch; the center line of the back panel is designed to be offset outward in segments from the center line of the back crotch, with the offset at the back hem being less than the offset at the back crotch. The offset of the center line of the back piece is correspondingly greater than the offset of the center line of the front piece. The indentation at the front knee circumference of the front piece is less than or equal to 0.5 cm, and the indentation at the rear knee circumference of the rear piece is less than or equal to 0.5 cm. The outer seam of the front piece is straight along the outer hip circumference, outer knee circumference, and outer leg opening, and the outer seam of the back piece is straight along the outer hip circumference, outer knee circumference, and outer leg opening.

2. The straight trouser pattern as described in claim 1, characterized in that: The lateral displacement distance of the midpoint of the front crossbar is S1, and the lateral displacement point of the front crossbar is A'. The lateral displacement distance of the midpoint of the front knee circumference of the front piece is S1, and the lateral displacement point of the front knee circumference is B'. The lateral displacement distance of the midpoint of the front foot opening line of the front piece is S1*(0.5~0.8), and the lateral displacement point of the front foot opening line is C`; The front crossbar lateral shift point A', the front knee circumference line lateral shift point B', and the front hemline lateral shift point C' are connected in sequence to form the front pant center line; The distance the rear crossbar is shifted outward from the midpoint of the rear crossbar is S2, and the lateral shift point of the rear crossbar is D`. The distance by which the midpoint of the rear knee circumference of the rear piece is shifted outward is S2, and the lateral shift point of the rear knee circumference is E'; The distance by which the midpoint of the rear foot opening line of the rear piece is shifted outward is S2*(0.5~0.8), and the lateral shift point of the rear foot opening line is F`; S2 is greater than S1, and S2 is less than 4*S1; The rear crossbar lateral shift point D', the rear knee circumference lateral shift point E', and the rear hemline lateral shift point F' are connected in sequence to form the center line of the rear pant piece.

3. The straight trouser pattern as described in claim 1, characterized in that: The aforementioned backward trap angle is 5.7°~9.5°.

4. The straight trouser pattern as described in claim 1, characterized in that: The total width of the front crossbar of the front piece = hip circumference / 4 - 1cm + 0.045 * hip circumference, and the total width of the back crossbar of the back piece = hip circumference / 4 + 1cm + 0.11 * hip circumference, where 1 ranges from 1 to 2.5cm.

5. A straight trouser pattern as described in claim 2, characterized in that: The total width of the front crossbar of the front panel is 29.3cm, and the total width of the rear crossbar is 40.2cm; the front knee circumference is 20cm, the rear knee circumference is 26cm, the front instep is 15cm, and the rear instep is 19cm. S2 = 2 * S1, S1 is 1 cm, and the rear trap angle is 8.5°.

Images