Backpack system capable of rotatably shrinking braid to adjust straps

Abstract

A backpack system capable of rotatably contracting a braid to adjust the strap comprises the strap and a bearing body, the strap comprises a shoulder strap and the braid, one end of the braid is connected with the shoulder strap, the other end of the braid is connected with the bearing body, the length of the strap is adjusted by adjusting the length of the braid, a braid retracting and releasing device for adjusting the length of the braid is arranged on the shoulder strap, and the braid retracting and releasing device is connected with the bearing body. One end of the braid is connected with the braid retracting and releasing device, and the braid is connected with the shoulder strap through the braid retracting and releasing device. According to the principle, the braid retracting and releasing device is combined with the original braid of the backpack system, the structure for adjusting the tightness of the straps is simplified, connecting points of the straps are reduced, the original braid of the backpack system is used for telescopic adjustment, and the bearing capacity of the straps is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of bags, in particular to a carrying system with a rotatable and retractable webbing and adjustable shoulder strap. Background Art

[0002] At present, the adjustment of the shoulder straps of a backpack is often achieved through a Japanese buckle and an adjustment belt fixed to the bottom of the back of the backpack. In actual application, the user needs to adjust the shoulder straps on both sides to the corresponding height without carrying the backpack, and during the adjustment process, the user needs to try to carry the backpack several times to verify whether the shoulder straps are adjusted to meet their needs. The adjustment method is relatively cumbersome, and it cannot be flexibly adjusted according to user needs during use, so it cannot meet people's usage needs well.

[0003] In order to solve the problem of Japanese buckle adjustment, a technology of adjusting the tightness of shoulder straps by using knob buckles has emerged, such as a backpack with adjustable shoulder straps with Chinese patent publication number CN217285049U, which includes a backpack body, a shoulder strap unit, two adjustment straps and two adjustment devices; the top of the shoulder strap unit is fixedly connected to the back of the backpack body, and it has two shoulder straps arranged at intervals; both shoulder straps are provided with guide channels arranged along the extending direction of the shoulder straps, and the bottom ends of the two shoulder straps are provided with openings connected to the guide channels; one end of the two adjustment straps is respectively fixedly connected to the two sides of the bottom of the backpack body, and the other ends of the two adjustment straps respectively correspond to the shoulder straps on the same side and are matched with the openings and penetrated into the guide channels; the two adjustment devices are respectively installed on the two shoulder straps; the adjustment device has a telescopic rope suitable for telescoping and locking at any position of the telescopic path; the telescopic end of the telescopic rope extends into the guide channel of the corresponding shoulder strap and connects with the adjustment rope. This adjustment method is to adjust the webbing by pulling the retractable cord of the adjustment device, which has the following defects: (1) Since the thickness of the retractable cord is limited, its tensile strength is insufficient, which limits the load-bearing capacity of the shoulder strap; (2) The retractable cord needs to be connected to the original webbing of the backpack, which requires more manufacturing process steps and there is a risk of disconnection. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a carrying system with a rotatable and retractable webbing adjusting strap, which improves the strength of the strap while facilitating the adjustment of the tightness of the strap.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a carrying system with a rotatable and retractable webbing to adjust the shoulder strap, comprising a shoulder strap and a load-bearing body, the shoulder strap comprising a shoulder strap and a webbing, one end of the webbing is connected to the shoulder strap, the other end of the webbing is connected to the load-bearing body, the length of the shoulder strap is adjusted by adjusting the length of the webbing, the shoulder strap is provided with a webbing retracting device for adjusting the length of the webbing, one end of the webbing is connected to the webbing retracting device, and the webbing is connected to the shoulder strap through the webbing retracting device. Principle of the utility model: The webbing retracting device is combined with the original webbing of the carrying system, which simplifies the structure of the tightness adjustment of the shoulder strap, reduces the connection points of the shoulder strap, and uses the original webbing of the carrying system for telescopic adjustment, and the load-bearing capacity of the shoulder strap is not affected.

[0006] As an improvement, the webbing retracting and releasing device includes a base, a wire wheel pivotally connected to the base, a knob rotatably matched with the base, and a transmission mechanism, and the knob drives the wire wheel through the transmission mechanism.

[0007] As an improvement, the load-bearing body is a bag body or an elbow rest.

[0008] As an improvement, the lower end of the shoulder strap is connected to the lower part of the bag body through an adjustment strap, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the webbing is connected to the upper part of the bag body at the shoulder strap fixing point, and the other end of the webbing is connected to the webbing retracting device along the upper end of the shoulder strap.

[0009] As an improvement, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the webbing is connected to the lower part of the bag body, and the other end of the webbing is connected to the webbing retracting device along the lower end of the shoulder strap.

[0010] As an improvement, a guide channel is provided in the shoulder strap, and the webbing passes through the guide channel.

[0011] As an improvement, the webbing includes a first webbing and a second webbing, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the first webbing is connected to the upper part of the bag body at the shoulder strap fixing point, the other end of the first webbing is connected to the webbing retracting device along the upper end of the shoulder strap, one end of the second webbing is connected to the lower part of the bag body, and the other end of the second webbing is connected to the webbing retracting device along the lower end of the shoulder strap.

[0012] As an improvement, the webbing includes a first webbing and a second webbing, the webbing retracting device includes a first webbing retracting device and a second webbing retracting device, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the first webbing is connected to the upper part of the bag body at the shoulder strap fixing point, the other end of the first webbing is connected to the first webbing retracting device along the upper end of the shoulder strap, one end of the second webbing is connected to the lower part of the bag body, and the other end of the second webbing is connected to the second webbing retracting device along the lower end of the shoulder strap.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The webbing retraction and extension device is combined with the original webbing of the carrying system, which simplifies the structure of the tightness adjustment of the straps, reduces the connection points of the straps, and utilizes the original webbing of the carrying system for expansion and contraction adjustment without affecting the load-bearing capacity of the straps. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the backpack of Example 1.

[0016] Figure 2 This is a schematic diagram of the backpack in use of Example 1.

[0017] Figure 3 This is a schematic diagram of the backpack of Example 2.

[0018] Figure 4 This is a schematic diagram of the backpack in use according to Example 2.

[0019] Figure 5 This is a schematic diagram of a backpack in Example 3.

[0020] Figure 6 Schematic diagram of the backpack of Example 4.

[0021] Figure 7 It is a schematic diagram of a single-mouth webbing retracting and releasing device.

[0022] Figure 8 It is a schematic diagram of the internal structure of a single-port webbing retracting and releasing device.

[0023] Fig. 9 This is an exploded view of the single-port webbing retracting device.

[0024] Fig.10 It is a cross-sectional view of a single-port webbing retracting and releasing device.

[0025] Fig.11 This is a schematic diagram of a double-mouth webbing retracting and releasing device.

[0026] Fig.12 This is the exploded view I of the double-mouth webbing retracting and releasing device.

[0027] Fig.13 This is the exploded view II of the double-mouth webbing retracting device.

[0028] Fig.14 It is a schematic diagram of the internal structure of the double-mouth webbing retracting and releasing device. DETAILED DESCRIPTION

[0029] The utility model will be further described below in conjunction with the accompanying drawings. Example 1

[0030] like Figure 1 ,2 As shown, a carrying system with a rotatable and retractable webbing adjustable shoulder strap comprises a shoulder strap and a load-bearing body, wherein the load-bearing body is a bag body 1 or an elbow rest. This embodiment takes the backpack carrying system with the bag body 1 as an example for explanation. The shoulder strap comprises a shoulder strap 2, a webbing 3 and a webbing retracting device 4 provided on the front of the shoulder strap 2; the lower end of the shoulder strap 2 is connected to the lower part of the bag body 1 through an adjusting strap 5, the upper end of the shoulder strap 2 is connected to the upper part of the bag body 1, one end of the webbing 3 is connected to the upper part of the bag body 1 at the fixing position of the shoulder strap 2, and the other end of the webbing 3 is connected to the webbing retracting device 4 along the upper end of the shoulder strap 2, and the webbing 3 can be retracted and retracted through the webbing retracting device 4, thereby adjusting the tightness of the shoulder strap. Example 2

[0031] like Figure 3 , 4 As shown, a carrying system with a rotatable and retractable webbing to adjust the shoulder strap comprises a shoulder strap and a load-bearing body, wherein the load-bearing body is a bag body 1 or an elbow rest. This embodiment takes the backpack carrying system with the bag body 1 as an example for explanation. The shoulder strap comprises a shoulder strap 2, a webbing 3 and a webbing retracting device 4 provided on the front of the shoulder strap 2; the upper end of the shoulder strap 2 is connected to the upper part of the bag body 1, one end of the webbing 3 is connected to the lower part of the bag body 1, and the other end of the webbing 3 is connected to the webbing retracting device 4 along the lower end of the shoulder strap 2. A guide channel is provided in the shoulder strap 2, and the webbing passes through the guide channel. The webbing 3 can be retracted and retracted through the webbing retracting device 4, thereby adjusting the tightness of the shoulder strap. Example 3

[0032] like Figure 5 As shown, a carrying system with a rotatable and retractable webbing adjustable shoulder strap comprises a shoulder strap and a load-bearing body, wherein the load-bearing body is a bag body 1 or an elbow rest. This embodiment is described by taking the backpack carrying system in which the load-bearing body is the bag body 1 as an example. The shoulder strap includes a shoulder strap 2, a webbing and a webbing retracting device arranged on the front side of the shoulder strap 2; the webbing includes a first webbing 3 and a second webbing 5, and the webbing retracting device includes a first webbing retracting device 4 and a second webbing retracting device 6. The upper end of the shoulder strap 2 is connected to the upper part of the bag body 1, one end of the first webbing 3 is connected to the upper part of the bag body 1 at the fixing point of the shoulder strap 2, the other end of the first webbing 3 is connected to the first webbing retracting device 4 along the upper end of the shoulder strap 2, one end of the second webbing 5 is connected to the lower part of the bag body 1, and the other end of the second webbing 5 is connected to the second webbing retracting device 6 along the lower end of the shoulder strap 2. A guide channel is provided in the shoulder strap 2, and the second webbing 5 passes through the guide channel. The two webbings are respectively retracted and retracted by the two webbing retracting devices, thereby adjusting the tightness of the shoulder strap. Example 4

[0033] like Figure 6As shown, a carrying system with a rotatable and retractable webbing to adjust the shoulder strap comprises a shoulder strap and a load-bearing body, wherein the load-bearing body is a bag body 1 or an elbow rest. This embodiment takes the backpack carrying system with the bag body 1 as an example for explanation. The shoulder strap comprises a shoulder strap 2, a webbing, and a webbing retracting device provided on the front of the shoulder strap 2; the webbing comprises a first webbing 3 and a second webbing 4, wherein the upper end of the shoulder strap 2 is connected to the upper part of the bag body 1, one end of the first webbing 3 is connected to the upper part of the bag body 1 at the fixed position of the shoulder strap 2, the other end of the first webbing 3 is connected to the webbing retracting device 5 along the upper end of the shoulder strap 2, one end of the second webbing 4 is connected to the lower part of the bag body 1, and the other end of the second webbing 4 is connected to the webbing retracting device 5 along the lower end of the shoulder strap 2, a guide channel is provided in the shoulder strap 2, the second webbing 4 passes through the guide channel, and the two webbings are simultaneously retracted and retracted through a webbing retracting device 5, thereby adjusting the tightness of the shoulder strap.

[0034] In the above embodiments 1 to 3, Figures 7 to 10As shown, the webbing retracting and releasing device is a single-port webbing retracting and releasing device, which has only one retracting and releasing port, and the webbing enters the interior thereof through the retracting and releasing port; the single-port webbing retracting and releasing device comprises a base 41, a reel 43 pivotally connected to the base 41, a knob 42 and a transmission mechanism 44 that rotates with the base 41; the knob 42 drives the reel 43 through the transmission mechanism 44, and a accommodating cavity is provided in the base 41, and the transmission mechanism 44 comprises a first rotating shaft 443, a first gear 442 provided at one end of the first rotating shaft 443, a second rotating shaft 445 parallel to the first rotating shaft 443, a second gear 444 provided at one end of the second rotating shaft 445, A third rotating shaft 447 parallel to the second rotating shaft 445 and a third gear 446 arranged at one end of the third rotating shaft 447, a fourth gear 441 is arranged at one end of the wire wheel 43, the first gear 442 is respectively meshed with the second gear 444 and the fourth gear 441, the second gear 444 is respectively meshed with the first gear 442 and the third gear 446, the wire wheel 43, the first rotating shaft 443, the second rotating shaft 445 and the third rotating shaft 447 are pivotally connected in the accommodating cavity of the base 41; a pivot seat 47 is arranged on the base 41, a through hole connected to the accommodating cavity is arranged in the pivot seat 47, and the inner wall of the pivot seat 47 is provided with A first latching tooth 471, an annular groove is provided on the outer wall of the pivot seat 47, the knob 42 is buckled on the pivot seat 47, a buckle is provided on the knob 42, the buckle cooperates with the annular groove to realize the connection and pivoting of the knob 42 and the pivot seat 47; a rotating body 46 is provided in the pivot seat 47, an annular flange is provided on the inner wall of the pivot seat 47 to support the rotating body 46, a first crown gear 449 is provided at the bottom of the rotating body 46, the first crown gear 449 is meshed with the second crown gear 447 on the third rotating shaft 447, a groove is provided at the bottom of the rotating body 46, and a second latching tooth 461 is provided on the inner wall of the groove, the first The latch tooth 471 and the second latch tooth 461 are in opposite directions; a check piece 45 is provided between the knob 42 and the rotating body 46, and the check piece 45 includes a column 451, a first stop portion 452 provided on the upper part of the column 451, and a second stop portion 453 provided on the lower part of the column 451, the first stop portion 452 cooperates with the first latch tooth 471, and the second stop portion 453 cooperates with the second latch tooth 461, and a clamping column cooperating with the column 451 is provided at the bottom of the knob 42, the knob 42 drives the check piece 45, the check piece 45 drives the rotating body 46, the rotating body 46 drives the transmission mechanism, and the transmission mechanism drives the wire wheel 43 to retract and release the winding webbing.

[0035] In the above embodiment 4, Figures 11 to 14As shown, the webbing retracting device is a double-mouth webbing retracting device, the first webbing enters the interior of the double-mouth webbing retracting device through the retracting port at one end of the double-mouth webbing retracting device, and the second webbing enters the interior of the double-mouth webbing retracting device through the retracting port at the other end of the double-mouth webbing retracting device; the double-mouth webbing retracting device includes a base 51, a first wire wheel 55 pivotally connected to one side of the base 51, a second wire wheel 56 pivotally connected to the other side of the base 51, a knob 52 and a transmission mechanism 57 that rotate with the base 51; the knob 52 drives the first wire wheel 55 and the second wire wheel 56 at the same time through the transmission mechanism 57, the base 51 is provided with a accommodating cavity, and the transmission mechanism 57 includes a first rotating shaft 571, a first gear 572 provided at one end of the first rotating shaft 571, a second rotating shaft 573, and a first gear 574 provided at the first rotating shaft 575. The second gear 574 at one end of the second rotating shaft 573, the third rotating shaft 575, the third gear 576 arranged at one end of the third rotating shaft 575, the fourth rotating shaft 577 and the fourth gear 578 arranged at one end of the fourth rotating shaft 577, the fifth gear 551 is arranged at one end of the first wire wheel 55, the sixth gear 561 is arranged at one end of the second wire wheel 56, and the fourth gear 578 and the fifth gear 551 are respectively located on both sides of the base 51, the first gear 572 is respectively meshed with the second gear 574 and the fifth gear 551, the third gear 576 is respectively meshed with the fourth gear 578 and the sixth gear 561, the first wire wheel 55, the second wire wheel 56, the first rotating shaft 571, the second rotating shaft 573, the third rotating shaft 577 5 is parallel to the fourth rotating shaft 577 and is pivotally connected to the accommodating cavity of the base 51; the base 51 is provided with a pivot seat 511, the pivot seat 511 is provided with a through hole communicating with the accommodating cavity, the outer wall of the pivot seat 511 is provided with an annular groove, the knob 52 is buckled on the pivot seat 511, and the knob 52 is provided with a buckle, the buckle cooperates with the annular groove to realize the connection and pivoting of the knob 52 and the pivot seat 511, and the knob 52 can also be moved up and down according to the width of the annular groove to realize state adjustment; the pivot seat 511 is provided with a rotating body 54, and the bottom of the rotating body 54 is provided with a first crown gear, and the first crown gear is respectively connected with the second crown gear 58 on the second rotating shaft 573 and the third crown gear on the fourth rotating shaft 577. 59 meshing, a first connecting gear 541 is provided on the top of the rotating body 54; an annular plate 512 is provided in the middle of the pivot seat 511, an annular groove is formed between the annular plate 512 and the outer wall of the pivot seat 511, a column is provided in the middle of the bottom of the knob 52, a second connecting gear 521 is provided at the bottom of the column, the column extends into the annular plate and the first connecting gear 541 meshes with the second connecting gear 521, an annular tooth 522 is provided at the bottom of the knob 52 on the periphery of the column, a check piece 53 is provided between the knob 52 and the pivot seat 511, the check piece 53 includes a plurality of elastic arms 531, a latch tooth 532 is provided at the end of the elastic arm 531, and the latch tooth 532 cooperates with the annular tooth 522;The knob 52 drives the check piece 53, the check piece 53 drives the rotating body 54, the rotating body 54 drives the transmission mechanism 57, and the transmission mechanism 57 drives the two wire wheels to simultaneously reel in and unreel the first webbing 3 and the second webbing 4. ;

Claims

1. A carrying system with a rotatable and retractable webbing adjustable shoulder strap, comprising a shoulder strap and a load-bearing body, wherein the shoulder strap comprises a shoulder strap and a webbing, one end of the webbing is connected to the shoulder strap, and the other end of the webbing is connected to the load-bearing body, and the length of the shoulder strap is adjusted by adjusting the length of the webbing, characterized in that: The shoulder strap is provided with a webbing retracting and releasing device for adjusting the length of the webbing, one end of the webbing is connected to the webbing retracting and releasing device, and the webbing is connected to the shoulder strap via the webbing retracting and releasing device.

2. A carrying system with a rotatable and retractable webbing adjustable shoulder strap according to claim 1, characterized in that: The webbing retracting and releasing device comprises a base, a wire wheel pivotally connected in the base, a knob rotatably matched with the base, and a transmission mechanism, wherein the knob drives the wire wheel through the transmission mechanism.

3. A carrying system with a rotatable and retractable webbing adjustable shoulder strap according to claim 1, characterized in that: The load-bearing body is a bag body or an elbow support.

4. A carrying system with a rotatable and retractable webbing adjustable shoulder strap according to claim 3, characterized in that: The lower end of the shoulder strap is connected to the lower part of the bag body through an adjustment strap, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the webbing is connected to the upper part of the bag body at the shoulder strap fixing point, and the other end of the webbing is connected to the webbing retracting device along the upper end of the shoulder strap.

5. The carrying system of the rotatable and retractable webbing adjustable shoulder strap according to claim 3, characterized in that: The upper end of the shoulder strap is connected to the upper part of the bag body, one end of the webbing is connected to the lower part of the bag body, and the other end of the webbing is connected to the webbing retracting device along the lower end of the shoulder strap.

6. A carrying system with a rotatable and retractable webbing adjustable shoulder strap according to claim 5, characterized in that: A guide channel is arranged in the shoulder strap, and the webbing passes through the guide channel.

7. A carrying system with a rotatable and retractable webbing adjustable shoulder strap according to claim 3, characterized in that: The webbing includes a first webbing and a second webbing, the upper end of the shoulder strap is connected to the upper part of the bag body, one end of the first webbing is connected to the upper part of the bag body at the shoulder strap fixing point, the other end of the first webbing is connected to the webbing retracting device along the upper end of the shoulder strap, one end of the second webbing is connected to the lower part of the bag body, and the other end of the second webbing is connected to the webbing retracting device along the lower end of the shoulder strap.

8. The carrying system of the rotatable and retractable webbing adjustable shoulder strap according to claim 3, characterized in that: The webbing includes a first webbing and a second webbing, and the webbing retracting device includes a first webbing retracting device and a second webbing retracting device. The upper end of the shoulder strap is connected to the upper part of the bag body, one end of the first webbing is connected to the upper part of the bag body at the shoulder strap fixing point, the other end of the first webbing is connected to the first webbing retracting device along the upper end of the shoulder strap, one end of the second webbing is connected to the lower part of the bag body, and the other end of the second webbing is connected to the second webbing retracting device along the lower end of the shoulder strap.

Images