Connecting structure and method of knitted shoulder strap and adjusting buckle

Abstract

The present invention discloses a connection structure and connection method for a knitted shoulder strap and an adjustment buckle, comprising a shoulder strap and an adjustment buckle, wherein the two ends of the shoulder strap are respectively a free end and a connection end, a connection belt is sewn on the surface of the connection end of the shoulder strap, the adjustment buckle comprises a first through hole and a second through hole separated by a retaining rib, the end of the connection belt passes through the first through hole and the second through hole and is sewn to the surface of the shoulder strap to form an annular sleeve structure, the retaining rib is located in the annular sleeve, the free end of the shoulder strap passes through the first through hole and the second through hole, so that the lower surface of the shoulder strap at the adjustment buckle abuts against the upper surface of the connection belt, and the end of the shoulder strap connection end abuts against the lower surface of the shoulder strap. The present invention sews the connection belt at the end of the shoulder strap, and the connection belt passes around the adjustment buckle and is sewn to the main body of the shoulder strap to form an adjustment ring, which not only reduces the bulge at the connection between the shoulder strap and the adjustment buckle, improves the seamless effect, but also facilitates the adjustment of the length of the shoulder strap.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing, and in particular to a connection structure and a connection method of a knitted shoulder strap and an adjusting buckle. Background Art

[0002] Knitted shoulder straps are mostly set on women's bras and underwear. With the improvement of living standards, the comfort of wearing shoulder straps has become a common demand. The existing shoulder straps 1 and adjustment buckles 2 are made by passing the end of the shoulder strap 1 through the adjustment buckle and then directly sewing it to the main body of the shoulder strap 1. Since the knitted shoulder straps 1 are mostly made by wrapping one or more layers of fabric around the outside of the elastic band, the shoulder strap 1 is relatively thick. Therefore, this fixing method will cause the connection between the shoulder strap 1 and the adjustment buckle 2 to bulge, resulting in a bulge when worn, and the seamless effect is poor. In addition, when adjusting the length of the shoulder strap 1, the part of the shoulder strap 1 located at the annular sleeve 7 will move with the movement of the main part of the shoulder strap 1, causing the annular sleeve 7 to be severely deformed and difficult to reset. Not only is it inconvenient to adjust the length of the shoulder strap 1, but it also greatly reduces the user experience. Therefore, it is urgently needed to improve this. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a connection structure and connection method between a knitted shoulder strap and an adjustment buckle. By sewing a connecting strap at the end of the shoulder strap, and then passing the connecting strap around the adjustment buckle and sewing it to the main body of the shoulder strap to form an adjustment ring, not only the bulge at the connection between the shoulder strap and the adjustment buckle is reduced, the seamless effect is improved, but also the length of the shoulder strap is easily adjusted.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A connection structure of a knitted shoulder strap and an adjustment buckle, comprising a shoulder strap and an adjustment buckle, wherein the two ends of the shoulder strap are respectively a free end and a connection end, a connection belt is sewn on the surface of the connection end of the shoulder strap, the adjustment buckle comprises a first through hole and a second through hole separated by a retaining rib, the end of the connection belt passes through the first through hole and the second through hole and is sewn to the surface of the shoulder strap to form an annular sleeve structure, the retaining rib is located in the annular sleeve, the free end of the shoulder strap passes through the first through hole and the second through hole, so that the lower surface of the shoulder strap at the adjustment buckle abuts against the upper surface of the connection belt, and the end of the shoulder strap connection end abuts against the lower surface of the shoulder strap.

[0006] The cross-sectional dimensions of the first through hole and the second through hole are both smaller than twice the thickness of the shoulder strap, and the thickness of the connecting belt is smaller than the thickness of the shoulder strap.

[0007] The width of the connecting belt is smaller than the width of the shoulder belt.

[0008] The difference between the width of the connecting belt and the width of the shoulder strap is in the range of 0.1CM-0.2CM.

[0009] The shoulder strap and two ends of the connecting belt are sewn together to form a first sewing portion and a second sewing portion, respectively. The first sewing portion and the second sewing portion respectively cover the two ends of the connecting belt.

[0010] Both sides of the first suture portion and the second suture portion are tightened to form tightening portions.

[0011] The shoulder strap is a thick and elastic strip, and the connecting belt is an elastic belt.

[0012] The inside of the shoulder strap is an elastic belt, the outside of the elastic belt is wrapped with knitted fabric, the material of the connecting belt is consistent with the elastic belt, and both ends of the connecting belt are heat-cut and hardened.

[0013] A method for connecting a knitted shoulder strap and an adjusting buckle comprises a shoulder strap, an adjusting buckle and a connecting belt, wherein the method comprises the following steps:

[0014] S1. Sewing one end of the connecting belt to the surface of the shoulder strap connecting end, pre-sewing the shoulder strap and the connecting belt by tightening the top and loosening the bottom using a bar tacking machine, tightening the shoulder strap and forming a tightening portion;

[0015] S2. The bar tacking machine operates again to sew one end of the connecting strap to the surface of the shoulder strap connecting end, thereby forming a first suture portion. The first suture portion covers the end of the connecting strap, and the edges of the first suture portion do not extend beyond the two sides of the shoulder strap.

[0016] S3. Connect the shoulder strap to the adjustment buckle, the adjustment buckle including a first through hole, a second through hole, and a retaining rib. Pass the connecting end of the shoulder strap through the first through hole and the second through hole in sequence, and then wrap it back around the adjustment buckle so that the connecting strap passes through the first through hole and the second through hole again, thereby forming an adjustment loop structure.

[0017] S4. Sewing the other end of the connecting belt to the surface of the shoulder strap, and pre-sewing the shoulder strap and the connecting belt by a bar tacking machine in a top-tightening and bottom-loosening manner;

[0018] S5. The tacking machine works again to sew the other end of the connecting belt to the surface of the shoulder strap connecting end and form a second sutured portion. The second sutured portion covers the end of the connecting belt, and the edge of the second sutured portion does not exceed the two sides of the shoulder strap. The connecting belt is wrapped around the outside of the retaining rib to form an annular sleeve structure, and the end of the shoulder strap connecting end abuts against the lower surface of the shoulder strap.

[0019] S6. Complete the connection.

[0020] The upper tight and lower loose sewing steps in step S1 and step S4 are the same, and the specific steps are: sew three times, the first time is to make four stitches along the width of the connecting belt, the second time is to make two stitches back along the width of the connecting belt, and the third time is to make four stitches along the width of the connecting belt.

[0021] The beneficial effects of the present invention are:

[0022] The invention also provides a method for adjusting the thickness of the shoulder strap by sewing a connecting strap at the end portion of the shoulder strap, and then sewing the connecting strap to the main portion of the shoulder strap after the connecting strap is wrapped around the rib. In this way, the thickness of the adjusting buckle is equivalent to the thickness of one shoulder strap plus the thickness of the adjusting buckle plus the thickness of the connecting strap. Compared with the prior art, the thickness of the adjusting buckle is reduced, the bulge is reduced when worn, and the seamless effect is good. Since the first through hole and the second through hole only need to pass through a shoulder strap of one thickness and a connecting strap of one thickness, a smaller-sized adjusting buckle can be selected, which not only further reduces the thickness of the adjusting buckle, but also reduces the cost of the adjusting buckle. Moreover, due to the reduced specifications of the adjusting buckle, the structure is more compact, which can effectively reduce the slippage of the shoulder strap and improve the fixing effect. By sewing the connecting strap, the cross-section of the shoulder strap connecting end can abut the lower surface of the shoulder strap main body, and the size of the first through hole is smaller than the thickness of the two shoulder straps, so that when adjusting the length of the shoulder strap, the end of the shoulder strap connecting end cannot pass through the first through hole, so that the annular sleeve formed by the winding of the connecting strap will not move with the adjustment of the shoulder strap, thereby facilitating the adjustment of the shoulder strap length and providing a good user experience.

[0023] 2. By quickly making two stitches during the second stitch, the stitches during the second stitch can be tightened, so that the shoulder strap can be tightened to form a tightening part, so that the two sides of the shoulder strap do not protrude, which not only looks good, but also improves comfort during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the prior art;

[0025] Figure 2 It is the main view of the prior art;

[0026] Figure 3 It is a structural schematic diagram of the present invention;

[0027] Figure 4 Schematic diagram of the connection between the shoulder strap and the connecting belt;

[0028] Figure 5 Needlework diagram for sewing the shoulder straps and connecting straps;

[0029] Figure 6 This is the stitch diagram for sewing the shoulder straps and connecting straps;

[0030] Figure 7 A cross-sectional view of the shoulder strap.

[0031] In the figure: 1. shoulder strap; 11. tightening part; 12. elastic band; 13. knitted fabric; 2. adjustment buckle; 21. first through hole; 22. second through hole; 23. retaining rib; 3. hanging ring; 4. connecting belt; 5. first stitching part; 6. second stitching part; 7. ring sleeve; 8. needle point. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] In the description of this specification, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0034] like Figures 1 to 7 As shown, a connection structure of a knitted shoulder strap and an adjustment buckle includes a shoulder strap 1 and an adjustment buckle 2, wherein the two ends of the shoulder strap 1 are respectively a free end and a connection end, a connection belt 4 is sewn on the surface of the connection end of the shoulder strap 1, and the adjustment buckle 2 includes a first through hole 21 and a second through hole 22 separated by a retaining rib 23, the end of the connection belt 4 passes through the first through hole 21 and the second through hole 22 and is sewn to the surface of the shoulder strap 1 to form an annular sleeve 7 structure, the retaining rib 23 is located in the annular sleeve 7, and the free end of the shoulder strap 1 passes through the first through hole 21 and the second through hole 22 to form an annular sleeve 7 structure. The lower surface of the shoulder strap 1 at the adjustment buckle 2 is made to abut against the upper surface of the connecting belt 4, and the end of the connecting end of the shoulder strap 1 abuts against the lower surface of the shoulder strap 1. The cross-sectional dimensions of the first through hole 21 and the second through hole 22 are both less than twice the thickness of the shoulder strap 1. The shoulder strap 1 is a strip belt with thickness and elasticity, and the connecting belt 4 is an elastic belt. The thickness of the connecting belt 4 is less than the thickness of the shoulder strap 1. The inside of the shoulder strap 1 is an elastic belt 12, and the outside of the elastic belt 12 is wrapped with a knitted fabric 13. The material of the connecting belt 4 is consistent with that of the elastic belt 12.

[0035] like Figure 2 In the prior art, the end of the shoulder strap 1 is directly sewn to the main body of the shoulder strap 1 after being wound around the retaining rib 23, resulting in the thickness at the adjustment buckle 2 being the thickness of two shoulder straps 1 plus the thickness of one adjustment buckle 2; Figure 3In the present invention, a connecting belt 4 is sewn at the end of the shoulder strap 1, and the connecting belt 4 is wound around the retaining rib 23 and then sewn to the main part of the shoulder strap 1. In this way, the thickness at the adjusting buckle 2 is equivalent to the thickness of one shoulder strap 1 plus the thickness of one adjusting buckle 2 plus the thickness of one connecting belt 4. Compared with the prior art, the thickness at the adjusting buckle 2 is reduced, the bulge is reduced when worn, and the seamless effect is good; because the first through hole 21 and the second through hole 22 only need to pass through a shoulder strap 1 of one thickness and a connecting belt 4 of one thickness, a smaller size of the adjusting buckle 2 can be selected, which not only further reduces the thickness at the adjusting buckle 2 The thickness can also reduce the cost of the adjustment buckle 2, and since the specification of the adjustment buckle 2 is reduced, the structure is more compact, which can effectively reduce the sliding of the shoulder strap 1 and improve the fixing effect; by sewing the connecting belt 4, the cross-section of the connecting end of the shoulder strap 1 can abut the lower surface of the shoulder strap 1 body, and the size of the first through hole 21 is smaller than the thickness of the two shoulder straps 1, so that when the length of the shoulder strap 1 is adjusted, the end of the connecting end of the shoulder strap 1 cannot pass through the first through hole 21, so that the annular sleeve 7 formed by the winding of the connecting belt 4 will not move with the adjustment of the shoulder strap 1, thereby facilitating the length adjustment of the shoulder strap 1 and providing a good user experience.

[0036] Furthermore, both ends of the connecting belt 4 are heat-cut and hardened, that is, the connecting belt 4 is heat-cut on the long strip, so that it is heat-melted at the cut and hardened after cooling. In this way, the structural reliability of the connecting belt 4 can be improved and the yarn of the connecting belt 4 can be prevented from falling apart.

[0037] like Figure 4 As shown, further, the width of the connecting belt 4 is smaller than the width of the shoulder strap 1. Since the edge of the connecting belt 4 is hardened, if the connecting belt 4 contacts the user's skin, it will cause discomfort to the user. Therefore, through the above design, the connecting belt 4 can be effectively prevented from contacting the skin, and in order to prevent the connecting belt 4 from sliding in the adjustment buckle 2, the difference between the width of the connecting belt 4 and the width of the shoulder strap 1 is in the range of 0.1CM-0.2CM.

[0038] like Figure 3 and Figure 4 As shown, further, the shoulder strap 1 and the two ends of the connecting belt 4 are sewn together to form a first sewing portion 5 and a second sewing portion 6 respectively, and the first sewing portion 5 and the second sewing portion 6 respectively cover the two ends of the connecting belt 4. Through the above design, the two ends of the connecting belt 4 can be effectively wrapped, thereby preventing the hardened part from being exposed, and further preventing the hardened part from directly contacting the skin.

[0039] Furthermore, the first stitching portion 5 and the second stitching portion 6 are tightened on both sides to form a tightening portion 11. Through multiple stitching, the shoulder strap 1 can be tightened on both sides of the stitching with the connecting belt 4 to prevent the edge of the shoulder strap from protruding, which improves the aesthetics.

[0040] A method for connecting a knitted shoulder strap and an adjusting buckle of the present invention comprises the following steps:

[0041] S1. Suture one end of the connecting strap 4 to the surface of the connecting end of the shoulder strap 1. Use a bar tacking machine to pre-sew the shoulder strap 1 and the connecting strap 4 in a top-tightening and bottom-loosening manner to tighten the shoulder strap 1 and form a tightening portion 11.

[0042] Before step S1, the connecting strip 4 is hot-cut;

[0043] S2. The bartacking machine starts working again to sew one end of the connecting belt 4 to the surface of the connecting end of the shoulder strap 1, and form a first suture 5. The first suture 5 covers the end of the connecting belt 4, and the edges of the first suture 5 do not exceed the two sides of the shoulder strap 1;

[0044] S3. Connect the shoulder strap 1 to the adjustment buckle 2. The adjustment buckle 2 includes a first through hole 21, a second through hole 22, and a retaining rib 23. The connecting end of the shoulder strap 1 is passed through the first through hole 21 and the second through hole 22 in sequence, and then looped back around the adjustment buckle 2, so that the connecting strap 4 passes through the first through hole 21 and the second through hole 22 again, thereby forming an adjustment loop structure.

[0045] S4, sew the other end of the connecting belt 4 to the surface of the shoulder strap 1, and pre-sew the shoulder strap 1 and the connecting belt 4 by a bar tacking machine in a top-tightening and bottom-loosening manner;

[0046] S5. The tacking machine works again to sew the other end of the connecting belt 4 to the surface of the connecting end of the shoulder strap 1 and form a second sutured portion 6. The second sutured portion 6 covers the end of the connecting belt 4, and the edge of the second sutured portion 6 does not exceed the two sides of the shoulder strap 1. The connecting belt 4 is wrapped around the outside of the retaining rib 23 to form an annular sleeve 7 structure, and the end of the connecting end of the shoulder strap 1 abuts against the lower surface of the shoulder strap 1.

[0047] S6. Complete the connection.

[0048] Through the above-mentioned connection method, the shoulder strap 1, the adjustment buckle 2 and the connecting belt 4 can be connected to form a knitted bra shoulder strap with adjustable length. It is not only easy to manufacture, but also can effectively reduce the thickness at the adjustment buckle 2, improve the seamless effect, and enhance the user experience.

[0049] In addition, the edges of the first stitching part 5 and the second stitching part 6 should be kept at 0.5mm±0.2mm from the edge of the shoulder strap 1 to prevent the stitching lines from being exposed on both sides of the shoulder strap 1, resulting in sharp corners and affecting the user experience.

[0050] The upper-tight and lower-loose sewing steps in step S1 and step S4 are the same, and the specific steps are: sew three times, the first time is to make four stitches along the width of the connecting belt 4, the second time is to make two stitches back along the width of the connecting belt 4, and the third time is to make four stitches again along the width of the connecting belt 4;

[0051] like Figure 5 and Figure 6 As shown, during the first stitch (a), the bar tacking machine starts from the middle of the connecting belt 4, pre-sews the connecting belt 4 and the shoulder strap 1, and moves four needles along the edge of the connecting belt 4 to form four needle points 8. After the stitch is completed, the bar tacking machine moves back to make a second stitch (b). During the second stitch, the bar tacking machine speed is increased and the number of stitches is reduced to two, forming two needle points 8. After the second stitch is completed, the needle thread is located at the other side edge of the connecting belt 4, and the bar tacking machine continues to move back to make a third stitch (c). The third stitch is the same as the first stitch, and finally reaches the middle position of the connecting belt 4, completing the pre-sew of the connecting belt 4 and the shoulder strap 1.

[0052] By quickly making two stitches during the second stitch, the stitches during the second stitch can be tightened, so that the shoulder strap 1 can be tightened to form a tightening portion 11, achieving the purpose of not protruding on both sides of the shoulder strap 1, which not only has good aesthetics, but also improves comfort during use.

[0053] Furthermore, a hanging ring 3 may be provided at the adjustment ring structure formed by the shoulder strap 1 being wound around, and the shoulder strap 1 may be connected to a bra (not shown in the figure) through the hanging ring 3 .

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for connecting a knitted shoulder strap and an adjusting buckle, characterized in that: The invention comprises a shoulder strap (1), an adjusting buckle (2) and a connecting strap (4), and a method for connecting the shoulder strap (1), the adjusting buckle (2) and the connecting strap (4) comprises the following steps: S1. Suture one end of the connecting belt (4) to the surface of the connecting end of the shoulder belt (1), pre-sew the shoulder belt (1) and the connecting belt (4) by a bar tacking machine in a manner of tightening the top and loosening the bottom, tighten the shoulder belt (1) and form a tightening portion (11); S2, the bar tacking machine works again to sew one end of the connecting belt (4) to the surface of the connecting end of the shoulder strap (1) to form a first suture portion (5), the first suture portion (5) covers the end of the connecting belt (4), and the edge of the first suture portion (5) does not exceed the two sides of the shoulder strap (1); S3, connecting the shoulder strap (1) and the adjustment buckle (2), wherein the adjustment buckle (2) comprises a first through hole (21), a second through hole (22) and a retaining rib (23), and the connecting end of the shoulder strap (1) is passed through the first through hole (21) and the second through hole (22) in sequence and then looped back around the adjustment buckle (2), so that the connecting belt (4) passes through the first through hole (21) and the second through hole (22) again, and the lower surface of the shoulder strap (1) at the adjustment buckle (2) abuts against the upper surface of the connecting belt (4), thereby forming an adjustment ring structure; S4, sewing the other end of the connecting belt (4) to the surface of the shoulder belt (1), and pre-sewing the shoulder belt (1) and the connecting belt (4) by a bar tacking machine in a manner of tightening the top and loosening the bottom; S5, the tacking machine works again, sewing and fixing the other end of the connecting belt (4) to the surface of the connecting end of the shoulder strap (1), and forming a second sewing portion (6), the second sewing portion (6) covers the end of the connecting belt (4), and the edge of the second sewing portion (6) does not exceed the two sides of the shoulder strap (1). The connecting belt (4) is wound around the outside of the retaining rib (23) to form an annular sleeve (7) structure, and the end of the connecting end of the shoulder strap (1) abuts against the lower surface of the shoulder strap (1); S6. Complete the connection.

2. A method for connecting a knitted shoulder strap and an adjustment buckle according to claim 1, characterized in that: The upper-tight and lower-loose suturing steps in step S1 and step S4 are the same, and the specific steps are: suturing in three times, the first time is to make four stitches along the width of the connecting belt (4), the second time is to make two stitches back along the width of the connecting belt (4), and the third time is to make four stitches again along the width of the connecting belt (4).

3. The method for connecting a knitted shoulder strap and an adjustment buckle according to claim 1, characterized in that: The two ends of the shoulder strap (1) are respectively a free end and a connecting end, a connecting strap (4) is sewn on the surface of the connecting end of the shoulder strap (1), the adjusting buckle (2) comprises a first through hole (21) and a second through hole (22) separated by a retaining rib (23), the end of the connecting strap (4) passes through the first through hole (21) and the second through hole (22) and is sewn to the surface of the shoulder strap (1) to form an annular sleeve (7) structure, the retaining rib (23) is located in the annular sleeve (7), the free end of the shoulder strap (1) passes through the first through hole (21) and the second through hole (22), so that the lower surface of the shoulder strap (1) at the adjusting buckle (2) abuts against the upper surface of the connecting strap (4), and the end of the connecting end of the shoulder strap (1) abuts against the lower surface of the shoulder strap (1).

4. The method for connecting a knitted shoulder strap and an adjustment buckle according to claim 1, wherein: The cross-sectional dimensions of the first through hole (21) and the second through hole (22) are both less than twice the thickness of the shoulder strap (1), and the thickness of the connecting strap (4) is less than the thickness of the shoulder strap (1).

5. The method for connecting a knitted shoulder strap and an adjustment buckle according to claim 1, wherein: The width of the connecting belt (4) is smaller than the width of the shoulder belt (1).

6. A method for connecting a knitted shoulder strap and an adjustment buckle according to claim 5, characterized in that: The difference between the width of the connecting belt (4) and the width of the shoulder belt (1) is in the range of 0.1CM-0.2CM.

7. A method for connecting a knitted shoulder strap and an adjustment buckle according to claim 5, characterized in that: The shoulder strap (1) and the two ends of the connecting belt (4) are sewn together to form a first sewing portion (5) and a second sewing portion (6), respectively. The first sewing portion (5) and the second sewing portion (6) respectively cover the two ends of the connecting belt (4).

8. A method for connecting a knitted shoulder strap and an adjustment buckle according to claim 7, characterized in that: Both sides of the first suture portion (5) and the second suture portion (6) are tightened to form tightening portions (11).

9. The method for connecting a knitted shoulder strap and an adjustment buckle according to claim 1, wherein: The shoulder strap (1) is a thick and elastic strip, and the connecting strap (4) is an elastic belt.

10. A method for connecting a knitted shoulder strap and an adjusting buckle according to claim 9, characterized in that: The shoulder strap (1) has an elastic band (12) inside, and the elastic band (12) is wrapped with a knitted fabric (13) outside. The connecting band (4) is made of the same material as the elastic band (12), and both ends of the connecting band (4) are heat-cut and hardened.

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