A backpack

Abstract

The utility model discloses a knapsack, including knapsack body and shoulder strap, and the shoulder strap is connected in the top of knapsack body, still include adjusting assembly, and adjusting assembly includes tow belt, first adjusting mechanism and second adjusting mechanism, one end of tow belt is connected in the shoulder strap through first adjusting mechanism, and the other end is connected in the bottom of knapsack body through second adjusting mechanism, and second adjusting mechanism includes the lock catch assembly of openable and closable, and the length of this section tow belt is adjusted and is locked through manual operation lock catch assembly and tow belt, and the length of tow belt is two -way adjusted through operating first adjusting mechanism and second adjusting mechanism. The utility model provides a kind of knapsack, and the two-way collaborative adjustment of tow belt whole is realized through the cooperation of first adjusting mechanism and second adjusting mechanism, so that user can flexibly, conveniently adjust knapsack to better state of carrying according to own demand.

Description

Technical Field

[0001] This utility model relates to the field of backpack technology, and specifically to a backpack. Background Technology

[0002] Backpacks, especially double-shoulder backpacks, have become essential equipment for daily outings and outdoor activities. Their comfort largely depends on the adjustability and fit of the shoulder strap system. Users have different needs for shoulder strap length due to differences in height, body type, and carrying habits. Currently, most backpack shoulder strap adjustments on the market are unidirectional. Common adjustment mechanisms are usually located at the top or bottom of the shoulder strap, tightening or loosening the webbing in one direction with a single adjustment device. However, this unidirectional adjustment method has significant limitations: First, it can only be operated at one end of the webbing, limiting the adjustment range and flexibility, making it difficult to meet the precise requirements of different users for overall shoulder strap support and pressure distribution. Second, during prolonged carrying, especially under heavy loads, single-point adjustment may cause the webbing to loosen or slip due to uneven force, requiring frequent readjustment and resulting in a poor user experience. Furthermore, existing unidirectional adjustment mechanisms are ineffective for scenarios requiring coordinated adjustments at the top (near the shoulder point) and bottom (near the bottom of the backpack) to optimize the carrying curve. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a backpack that achieves bidirectional coordinated adjustment of the entire traction belt through the coordinated cooperation of the first adjustment mechanism and the second adjustment mechanism, so that users can flexibly and conveniently adjust the backpack to the best carrying state according to their own needs.

[0004] To achieve the above objectives, the various embodiments of this utility model adopt the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution relates to a backpack, including a backpack body and shoulder straps. The shoulder straps are connected to the top of the backpack body. The backpack body also includes an adjustment component, which includes a traction strap, a first adjustment mechanism, and a second adjustment mechanism. One end of the traction strap is connected to the shoulder strap via the first adjustment mechanism, and the other end is connected to the bottom of the backpack body via the second adjustment mechanism. The second adjustment mechanism includes an openable and closable buckle assembly. By manually operating the buckle assembly and pulling the traction strap, the length of that section of the traction strap can be adjusted and locked. By operating the first adjustment mechanism and the second adjustment mechanism, bidirectional adjustment of the traction strap length can be achieved.

[0006] The second technical solution is based on the first technical solution, wherein the first adjustment mechanism is a strap mechanism, which is adjusted by rotation; the locking assembly is a buckle-type adjuster, which is adjusted by pulling.

[0007] The third technical solution is based on the second technical solution, wherein the traction belt includes an upper webbing and a lower webbing connected sequentially from top to bottom; a first adjusting mechanism is connected to the upper webbing to adjust its length; and a buckle-type adjuster is connected to the lower webbing to adjust its length.

[0008] The fourth technical solution is based on the third technical solution, wherein the traction belt further includes a connector, which is a ring-shaped link belt that is sleeved on the upper webbing and can slide along it.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the top of the lower webbing is folded to form a perforation, and the connecting strap passes through the perforation to form a ring structure.

[0010] The sixth technical solution is based on the third technical solution, wherein the buckle-type adjuster includes a buckle seat and a movable buckle cover. The buckle seat is provided with a channel for the lower webbing to pass through. The movable buckle cover is rotatably connected to the buckle seat and has an open position and a fastened position. When it is in the fastened position, the movable buckle cover presses and fixes the passing lower webbing in the channel.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the movable cover and the buckle seat are locked together by a snap-fit ​​structure.

[0012] The eighth technical solution is based on the third technical solution, wherein the belt mechanism includes a stator and a rotor; the rotor is rotatably mounted on the stator and has teeth; the stator has pawls that cooperate with the teeth; the rotor can be controlled to rotate in one direction or rotate freely by engaging and disengaging the pawls with the teeth.

[0013] The ninth technical solution is based on the eighth technical solution. In this solution, the belt mechanism also includes a guide rope. One end of the guide rope is fixed inside the rotor. A wire buckle is fixed on the upper webbing. The end of the guide rope passes through the wire buckle and is fixed thereto. When the rotor is rotated to wind the guide rope, the guide rope pulls the upper webbing through the wire buckle, thereby shortening the effective length of the upper webbing.

[0014] The tenth technical solution is based on any one of the first to ninth technical solutions, wherein the backpack is a double-shoulder backpack, and each of its two shoulder straps is equipped with an adjustment component to form two independent adjustment systems.

[0015] As can be seen from the above description of the various embodiments of the present utility model, compared with the prior art, the various embodiments of the present utility model have the following beneficial effects:

[0016] In the first technical solution and related embodiments, by setting independent adjustment mechanisms at both the upper and lower ends of the shoulder straps, the limitations of traditional unidirectional adjustment are broken. Users can adjust the length of the upper and lower parts of the shoulder straps separately according to their body shape and carrying comfort, achieving a more refined and ergonomic carrying curve and improving comfort. The second adjustment mechanism uses an openable and closable locking assembly, providing a quick adjustment method that is intuitive and convenient to operate. Simultaneously, this locking mechanism effectively prevents loosening due to webbing slippage during carrying, ensuring a stable and reliable adjusted state. The coordinated work of the two adjustment mechanisms allows a single backpack to more flexibly adapt to the needs of users of different heights and body types, expanding the product's applicability and addressing the pain points of insufficient comfort and adaptability in existing technologies.

[0017] In the second technical solution and related embodiments, the specific operating modes (rotation and pulling) of the two adjustment mechanisms complement each other. This differentiated operation mode ensures that the adjustment of the upper and lower sections does not interfere with each other.

[0018] In the third technical solution and related embodiments, the traction belt is specifically divided into an upper webbing and a lower webbing, enabling the bidirectional adjustment function to be physically realized. This structural division allows the first and second adjustment mechanisms to act independently on different webbing segments, achieving the decomposition of the adjustment task and ensuring a smooth adjustment process.

[0019] In the fourth technical solution and related embodiments, a ring-shaped connecting strap enables a sliding connection between the upper and lower webbing, forming a flexible, non-fixed connection point. This structure ensures that the connection point can move adaptively when the upper or lower webbing is adjusted individually, avoiding webbing twisting or unnecessary stress, and guaranteeing smooth adjustment and reasonable force distribution during carrying.

[0020] In the fifth technical solution and related embodiments, the perforations formed by the folded edge of the lower webbing are used to fix the connecting strap. This self-embedded connection method is compact, reliable, and not easy to loosen, thus enhancing the durability of the product.

[0021] In the sixth technical solution and related embodiments, the core structure of the buckle-type adjuster (buckle seat, movable buckle cover, channel) provides a highly reliable locking mechanism. The movable buckle cover presses the webbing into the channel, and the locking is achieved by friction. The structure is simple, the locking force is large, and it effectively prevents the webbing from slipping back.

[0022] In the seventh technical solution and related embodiments, the movable cover and the buckle seat are locked by a snap-fit ​​structure, which enhances the structural stability and impact resistance of the buckle assembly in the closed state. Even in the event of violent movement or accidental hooking, it can effectively prevent the cover from accidentally popping open and ensure the reliability of the lock.

[0023] In the eighth technical solution and related embodiments, the first adjustment mechanism controls the rotor's rotation state by engaging and disengaging the pawl and teeth. When engaged, the rotor can only rotate in one direction, effectively preventing the guide rope from retracting under stress and ensuring the stability and reliability of the webbing length during carrying. When disengaged, the rotor can rotate freely, allowing the guide rope to be quickly released or manually tightened, achieving convenient and flexible adjustment.

[0024] In the ninth technical solution and related embodiments, the circular motion of the rotor rotating the winding rope is converted into a linear pull on the upper webbing by the cooperation of the guide rope and the wire buckle.

[0025] In the tenth technical solution and related embodiments, the above-mentioned bidirectional adjustment system is applied to the two shoulder straps of the backpack to form two independent adjustment systems, allowing users to independently adjust the length of the shoulder straps on both sides, ensuring that the shoulders are evenly stressed, effectively correcting the risk of poor posture such as scoliosis and hunchback caused by uneven shoulder strap lengths, and improving the health and comfort of carrying the backpack. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the back of the backpack in the example embodiment;

[0028] Figure 2 This is a side view of the backpack in the example embodiment;

[0029] Figure 3 This is a schematic diagram of the first adjustment mechanism of the backpack in an embodiment;

[0030] Figure 4 This is a schematic diagram of the second adjustment mechanism of the backpack in an embodiment.

[0031] Explanation of key figure labels:

[0032] Backpack body 1; shoulder strap 2; first adjustment mechanism 3; second adjustment mechanism 4; screw cap 31; pawl 32; stator body 33; rotor body 34; winding groove 35; teeth 36; base 37; guide rope 38; traction belt 5; buckle seat 41; movable buckle cover 42; upper webbing 51; lower webbing 52; connector 53; perforation 54. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0034] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0035] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0036] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0037] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0038] See Figures 1 to 4 ,like Figure 1 As shown, a backpack includes a backpack body 1, shoulder straps 2, and an adjustment mechanism. The backpack is preferably a double-shoulder backpack. The backpack body 1 has a conventional bag structure for accommodating items. The shoulder straps 2 are connected to the top sides of the backpack body 1 for the user to carry, and the shoulder straps 2 may be padded to improve comfort. The adjustment mechanism is connected between the shoulder straps 2 and the bottom of the backpack body 1.

[0039] The backpack body 1 can adopt the style and materials commonly used in existing technologies; the shoulder straps 2 are usually two, which are connected to the left and right sides of the top of the backpack body 1 respectively, and will not be described in detail here.

[0040] Adjustment components, such as Figure 1 , Figure 2 and Figure 4 As shown, it includes a traction belt 5, a first adjustment mechanism 3, and a second adjustment mechanism 4.

[0041] The traction strap 5 is composed of an upper webbing 51, a connecting strap, and a lower webbing 52 connected sequentially from top to bottom. One end of the traction strap 5 is connected to the shoulder strap 2 via a first adjusting mechanism 3, and the other end is connected to the bottom of the backpack body 1 via a second adjusting mechanism 4. Specifically, the other end of the traction strap 5 is connected to the side of the backpack body 1 via the second adjusting mechanism 4.

[0042] The upper webbing 51 has its top end connected to the first adjustment mechanism 3.

[0043] The lower webbing 52 is formed by the traction belt 5 passing through the second adjustment mechanism 4, and its top end is perforated 54 by a folding process.

[0044] The connecting strap, a loop-shaped webbing, is fitted over the upper webbing 51 and can slide along it. Simultaneously, this connecting strap passes through the perforations 54 of the lower webbing 52 to form a loop structure, creating a sliding connection between the upper and lower webbing 51. This connection method allows the lengths of the upper and lower webbing 52 to vary complementaryly. The connecting strap is made of elastic material to facilitate the sliding of the upper and lower webbing 52.

[0045] In this embodiment, a ring-shaped connecting strap enables the sliding connection between the upper and lower webbing 52, forming a flexible, non-fixed connection point. This structure ensures that the connection point can move adaptively when either the upper webbing 51 or the lower webbing 52 is adjusted individually, avoiding webbing twisting or unnecessary stress, and guaranteeing smooth adjustment and reasonable force distribution during carrying.

[0046] In this embodiment, the traction belt 5 is specifically divided into an upper webbing 51 and a lower webbing 52, enabling the bidirectional adjustment function to be physically realized. This structural division allows the first adjustment mechanism 3 and the second adjustment mechanism 4 to act independently on different webbing segments, realizing the decomposition of the adjustment task and ensuring the smoothness of the adjustment process.

[0047] First regulating mechanism 3, such as Figure 3 As shown, this is the belt-tying mechanism, which adjusts the length of the upper webbing 51 by rotation. The belt-tying mechanism includes a stator, a rotor, and a guide rope 38.

[0048] The stator includes a base 37, a stator body 33, and a pawl 32 fixed together. The stator is fixedly mounted on the shoulder strap 2 via the base 37. At least one resilient pawl 32 is provided on the stator.

[0049] The rotor includes an upper cover 31 for user operation and a lower rotor body 34. The cover 31 engages with the rotor body 34 to prevent rotation. The rotor body 34 has a winding groove 35 around its circumference for winding the guide rope 38, and teeth 36 on its inner circumference that engage with a pawl 32. The rotor body 34 is rotatably mounted on the stator body 33.

[0050] Guide rope 38, such as Figure 4 As shown, a high-strength flexible rope is used, with one end fixed inside the winding groove 35 and the other end free. A wire clip (not shown in the figure) is fixedly installed on the upper webbing 51. The free end of the guide rope 38 passes through this wire clip and is then fixed to it.

[0051] When the rotor is rotated to wind the guide rope 38, the guide rope 38 pulls the upper webbing 51 through the wire buckle, shortening the effective length of the upper webbing 51, thereby achieving length adjustment of the upper webbing 51. The engagement and disengagement of the pawl 32 and the teeth 36 control the rotor to rotate in one direction or freely.

[0052] Specifically, such as Figure 3 As shown, the rotor is equipped with gears. When the rotor and stator are in the first gear, the pawl 32 is engaged with the teeth, and the rotor can only rotate in the tightening direction. When the rotor and stator are in the second gear, the pawl 32 is disengaged from the teeth, and the rotor can rotate in the tightening and slack directions. By pulling up the cover 31, the rotor can switch between different gears, and by rotating the cover 31, the rope can be wound or released. By pressing down the cover 31, the position can be locked.

[0053] In this embodiment, the first adjustment mechanism 3 controls the rotation state of the rotor by engaging and disengaging the pawl 32 and the teeth 36. When engaged, the rotor can only rotate in one direction, effectively preventing the guide rope 38 from retracting under stress and ensuring the stability and reliability of the webbing length during carrying. When disengaged, the rotor can rotate freely, allowing the guide rope 38 to be quickly released or manually tightened, achieving convenience and flexibility in adjustment.

[0054] In this embodiment, the circular motion of the rotor rotating the rope is converted into a linear pull on the upper webbing 51 by the cooperation of the guide rope 38 and the wire buckle.

[0055] Second regulating mechanism 4, such as Figure 4 As shown, the buckle assembly is an openable and closable mechanism. The length of the traction strap 5 can be adjusted and locked by manually operating the buckle assembly and pulling it. Specifically, the buckle assembly is a buckle-type adjuster, adjustable by pulling. The buckle-type adjuster is fixed to the side of the backpack body 1 by webbing and includes a buckle seat 41 and a movable buckle cover 42. The second adjustment mechanism 4 adjusts the length of the lower webbing 52 by pulling it.

[0056] The buckle 41 has a channel through which the lower webbing 52 passes.

[0057] The movable cover 42 is rotatably connected to the fastener 41 and has an open position and a closed position. When in the closed position, the movable cover 42 presses and fixes the passing lower webbing 52 within the channel. Specifically, the movable cover 42 and the fastener 41 are locked together by a snap-fit ​​structure. The movable cover 42 utilizes the elastic deformation of the side walls of the fastener 41 to engage and disengage with it. In this embodiment, the snap-fit ​​structure between the movable cover 42 and the fastener 41 enhances the structural stability and impact resistance of the locking assembly in the closed state. Even during vigorous movement or accidental snagging, it effectively prevents the cover from accidentally popping open, ensuring the reliability of the lock.

[0058] The lower webbing 52 passes through the channel. When the movable cover 42 is in the open position, the user can pull the connecting belt to slide along the upper webbing 51, causing the lower webbing 52 to move along the extension direction of the upper webbing 51 to adjust the effective length of the lower webbing 52. After adjusting to the appropriate length, the movable cover 42 is fastened, which is locked onto the buckle 41 by the snap-fit ​​structure, and the lower webbing 52 is firmly pressed into the channel, using friction to prevent it from sliding, thereby achieving reliable locking.

[0059] By operating the first adjusting mechanism 3 and the second adjusting mechanism 4, the length of the traction belt 5 can be adjusted bidirectionally. The specific working modes of the two adjusting mechanisms (rotation and pulling) complement each other. This differentiated operating mode ensures that the adjustments of the upper and lower sections do not interfere with each other.

[0060] The working principle of the backpack described in this embodiment is as follows:

[0061] When the user needs to adjust the tightness of the shoulder strap 2 or the carrying posture, the first adjustment mechanism 3 and the second adjustment mechanism 4 can be operated separately or in combination.

[0062] Quick Adjustment (Upper): The user can wind or unwind the upper webbing 51 to the appropriate position by pulling up and rotating the cap 31 of the first adjustment mechanism 3, and then pressing down the cap 31 to lock the position. This adjustment method is quick and convenient, and can adjust the longer length of the upper webbing 51. It is mainly used to adjust the fit between the upper part of the shoulder strap 2 and the shoulder.

[0063] Fine adjustment (lower part): The user opens the movable buckle cover 42 of the second adjustment mechanism 4 and manually pulls down the webbing 52 to change the length of the lower part of the shoulder strap 2 in a small range to adapt to the needs of different body types or clothing thickness, and then fastens and locks it.

[0064] In summary, through the coordinated operation of the aforementioned two-way adjustment system, users can make comprehensive and precise length adjustments to the shoulder strap 2, thereby obtaining a better personalized carrying experience and effectively improving the comfort and practicality of the backpack.

[0065] In this embodiment, the backpack is a double-shoulder backpack, with adjustment components on both shoulder straps 2, forming two independent adjustment systems. Applying this bidirectional adjustment system to the two shoulder straps 2 of the backpack creates two independent adjustment systems, allowing the user to independently adjust the length of both shoulder straps 2. This ensures even weight distribution on both shoulders, effectively correcting the risk of poor posture such as scoliosis and hunchback caused by uneven shoulder strap lengths, and improving the health and comfort of carrying the backpack.

[0066] In this embodiment, by setting independent adjustment mechanisms at both the upper and lower ends of the shoulder strap 2, the limitations of traditional unidirectional adjustment are broken. Users can adjust the length of the upper and lower parts of the shoulder strap 2 according to their body shape and carrying comfort, achieving a more refined and ergonomic carrying curve and improving comfort. The second adjustment mechanism 4 uses an openable and closable locking assembly, providing a quick adjustment method that is intuitive and convenient to operate. Simultaneously, this locking mechanism effectively prevents loosening due to webbing slippage during carrying, ensuring a stable and reliable adjusted state. The coordinated work of the two adjustment mechanisms allows a single backpack to more flexibly adapt to the needs of users of different heights and body types, expanding the product's applicability and addressing the pain points of insufficient comfort and adaptability in existing technologies.

[0067] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A backpack comprising a backpack body (1) and shoulder straps (2), the shoulder straps (2) being connected to the top of the backpack body (1), characterized in that, It also includes an adjustment component, which includes a traction strap (5), a first adjustment mechanism (3), and a second adjustment mechanism (4); one end of the traction strap (5) is connected to the shoulder strap (2) through the first adjustment mechanism (3), and the other end is connected to the bottom of the backpack body (1) through the second adjustment mechanism (4); the second adjustment mechanism (4) includes an openable and closable buckle assembly, which can be manually operated and the traction strap (5) pulled to adjust and lock the length of the traction strap (5); the length of the traction strap (5) can be bidirectionally adjusted by operating the first adjustment mechanism (3) and the second adjustment mechanism (4).

2. A backpack as described in claim 1, characterized in that, The first adjustment mechanism (3) is a strap mechanism, which is adjusted by rotation; the buckle assembly is a buckle-type adjuster, which is adjusted by pulling.

3. A backpack as described in claim 2, characterized in that, The traction belt (5) includes an upper webbing (51) and a lower webbing (52) connected sequentially from top to bottom; the first adjustment mechanism (3) is connected to the upper webbing (51) to adjust its length; the buckle-type adjuster is connected to the lower webbing (52) to adjust its length.

4. A backpack as described in claim 3, characterized in that, The traction belt (5) also includes a connector (53), which is a ring-shaped link belt that is sleeved on the upper webbing (51) and can slide along it.

5. A backpack as described in claim 4, characterized in that, The top of the lower webbing (52) is folded to form a perforation (54), and the connecting strap passes through the perforation (54) to form a ring structure.

6. A backpack as described in claim 3, characterized in that, The buckle-type adjuster includes a buckle base (41) and a movable buckle cover (42). The buckle base (41) has a channel for the lower webbing (52) to pass through. The movable buckle cover (42) is rotatably connected to the buckle base (41) and has an open position and a fastened position. When in the fastened position, the movable buckle cover (42) presses and fixes the passing lower webbing (52) in the channel.

7. A backpack as described in claim 6, characterized in that, The movable cover (42) and the buckle seat (41) are locked together by a snap-fit ​​structure.

8. A backpack as described in claim 3, characterized in that, The belt mechanism includes a stator and a rotor; the rotor is rotatably mounted on the stator and has teeth (36); the stator has pawls (32) that engage with the teeth (36); the rotor can be controlled to rotate in one direction or rotate freely by engaging and disengaging the pawls (32) and the teeth (36).

9. A backpack as described in claim 8, characterized in that, The tying mechanism also includes a guide rope (38), one end of which is fixed inside the rotor; a wire buckle is fixed on the upper webbing (51), and the end of the guide rope (38) passes through the wire buckle and is fixed thereto; when the rotor is rotated to wind the guide rope (38), the guide rope (38) pulls the upper webbing (51) through the wire buckle, thereby shortening the effective length of the upper webbing (51).

10. A backpack as described in any one of claims 1 to 9, characterized in that, The backpack is a double-shoulder backpack, and the two shoulder straps (2) are equipped with the adjustment components to form two independent adjustment systems.

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