Bracket of backpack

Abstract

A bracket of a backpack comprises a fixing base, an adjusting support and a locking device, the fixing base is provided with a fixing groove capable of being matched with a waistband or a trouser belt, the adjusting support can ascend and descend on the fixing base, a supporting face on the top of the adjusting support is used for supporting the bottom of the backpack, the locking device can fix the adjusting support to a proper position, and the bracket can effectively disperse gravity and is convenient to adjust. By means of the supporting face and the waistband, the gravity of the backpack is transferred to the crotch according to the lever principle, the shoulder pressure is greatly relieved, and the risks of shoulder and neck pain and spine pressure are reduced. Meanwhile, by optimizing the gravity center distribution, the user is prevented from inclining forwards for balancing the weight, humpback prevention is facilitated, and physical development of children and teenagers is facilitated. In addition, the adjusting support can be adjusted according to different body types, and the avoiding groove of the fixing base can improve the wearing comfort level. In addition, the locking device guarantees the stability of the adjusting support, the friction force is increased through the anti-skid lines, the guide inclined plane is convenient to install, and a convenient and healthy solution is provided for daily bearing of people.

Description

Technical Field

[0001] This utility model relates to the field of backpack auxiliary technology, and in particular to a backpack bracket. Background Technology

[0002] In today's fast-paced life, students and working professionals often need to carry heavy items, such as schoolbags for students, laptop bags for working professionals, and backpacks for outdoor activities. Currently, traditional carrying methods concentrate the weight primarily on the shoulders. When using these types of backpacks, the weight is mainly transferred to the user's shoulders through the shoulder straps. Prolonged use of this carrying method can easily lead to excessive pressure on the shoulders, resulting in problems such as neck and shoulder pain and spinal compression. For children and adolescents who are still developing, the impact of excessively heavy backpacks is even more severe, and hunchback is becoming increasingly common. Related surveys show that the proportion of primary and secondary school students with hunchbacks due to carrying heavy backpacks for extended periods is on the rise.

[0003] Existing solutions for preventing hunchback mostly focus on the structure of the backpack itself or the carrying method, such as widening the shoulder straps or adding back cushioning design. For example, the Chinese utility model patent "A Vest-Style Backpack for Preventing Hunchback" (application number 201721558053.0, authorization announcement number CN207532075U) discloses a method that increases the contact area between the backpack and the body at the shoulders and waist to reduce pressure and distribute the weight of the backpack to prevent hunchback. Another example is the Chinese utility model patent "Anti-Hunchback Backpack" (application number 202322771534.1, authorization announcement number CN220777680U), which uses straps extending from the side fixing plates to wrap around and fix the backpack body from two directions. This ensures that the backpack is completely fixed to the back, preventing it from sagging and improving the stability of the backpack on the back, thereby reducing the likelihood of hunchback.

[0004] However, none of the aforementioned backpacks effectively solved the core problem of uneven weight distribution; their weight still concentrates on the shoulders, and they still have the following drawbacks:

[0005] 1. Concentrated pressure on shoulders and lower back: Traditional designs do not distribute weight to other parts of the body, resulting in continuous stress on the shoulders and lower back;

[0006] 2. Lack of ergonomic design: The fixed structure is difficult to adapt to users of different body types, and the adjustment flexibility is insufficient;

[0007] 3. Cannot prevent hunchback: The backpack's center of gravity has not been changed through mechanical design, so users still need to lean forward to balance the weight;

[0008] Therefore, how to provide an auxiliary support for the backpack, which can be combined with a waist belt to support the human body and optimize the center of gravity distribution by using the lever principle, transfer the weight of the backpack to the hips, reduce the pressure on the shoulders and waist, and ultimately effectively prevent the body from leaning forward and causing hunchback, thus protecting the health of users, especially children and adolescents, is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a backpack bracket that supports the human body by combining a waist belt and optimizes the center of gravity distribution by using the lever principle, thereby transferring the weight of the backpack to the hips to reduce shoulder pressure and effectively prevent the human body from leaning forward and causing hunchback.

[0010] The technical solution adopted by this utility model to solve the above-mentioned technical problem is: the backpack's bracket, including...

[0011] The mounting base has a mounting groove that runs through the bottom and sides and can be fitted onto a belt or trouser belt;

[0012] An adjustable bracket is mounted on the fixed base and can be raised and lowered, with a support surface at the top that can support the bottom of the backpack.

[0013] A locking device, located on a fixed base, is used to lock the adjusting bracket, which has been adjusted to the target position, onto the fixed base.

[0014] In order to optimize the overall structure of the adjustment bracket, make the adjustment bracket more flexible and convenient, and provide better support for the backpack, preferably, the adjustment bracket includes an integrated adjustment part and a support part, the fixed base is provided with an adjustment hole that runs vertically through the base, and the adjustment part passes through the adjustment hole;

[0015] The support portion extends from the top of the adjustment portion in a direction away from the back of the human body, and the support surface is formed on the top of the support portion.

[0016] In order to better conform to the shape of the bottom of the backpack and improve the stability of the support, and at the same time help to better distribute and transmit the weight of the backpack, preferably, the support surface gradually tilts upward from the top of the adjustment part and forms an angle with the horizontal plane, the angle ranging from 3° to 8°.

[0017] To increase the friction between the support surface and the backpack and prevent the backpack from sliding on the support surface, preferably, a first anti-slip texture is formed on the support surface to increase the friction between the support surface and the backpack.

[0018] In order to optimize the locking structure of the locking device, making the locking structure simple, reliable and easy to operate, preferably, the locking device includes a latch rotatably disposed on the fixed base;

[0019] The sidewall of the adjustment part is provided with multiple ratchet teeth that are spaced vertically apart;

[0020] When the latch is not pressed, its locking end engages with the corresponding ratchet to lock the adjusting bracket.

[0021] To make the locking mechanism more sensitive to pressing and rotating, and thus better lock or unlock the adjustment part, preferably, the locking mechanism includes:

[0022] The hinged part is connected to the fixed base;

[0023] A locking part extends obliquely upward from the hinge part, and its end is the locking end;

[0024] The pressing part extends diagonally downward from the hinge part and is used to receive external pressure to trigger unlocking.

[0025] In order to better enable the pressing operation of the pressing part, preferably, the pressing part is also formed with a second anti-slip texture that increases friction when receiving external pressure.

[0026] To simplify the production process, reduce manufacturing costs, and improve the overall structural strength and stability, preferably, the fixing base and the latch are integrally molded plastic parts.

[0027] In order to avoid the lumbar spine or belt buckles used for belts, preferably, the side of the fixing seat that is close to the human body also has a relief groove that runs through the body to avoid the protruding parts of the human body. The design of the relief groove improves the comfort of wearing the bracket and avoids pressure on the protruding parts of the human body.

[0028] To improve ease of installation and make it easier to install the belt or trouser belt into the fixing groove, preferably, the opening of the fixing groove is also formed with a guide slope for guiding the belt or trouser belt into the fixing groove from bottom to top.

[0029] To better secure the backpack and the bracket together, the adjustment part is preferably provided with through holes that allow ropes or bags to pass through.

[0030] Compared with existing technologies, the advantages of this utility model are as follows: By setting the adjustable bracket vertically on the fixed base and providing a fixing groove on the fixed base so that it can be quickly positioned on the waist belt or trouser belt, and by providing a support surface on the adjustable bracket to support the bottom of the backpack, the weight of the backpack is transferred to the hips using the lever principle. This changes the situation where the weight is concentrated on the shoulders in the traditional carrying method, greatly reducing the burden on the shoulders and waist, and reducing the risk of shoulder and neck pain, spinal compression and other problems caused by carrying heavy objects for a long time. The optimized center of gravity distribution means that the user does not need to lean forward to balance the weight of the backpack, which helps to maintain a correct body posture and effectively prevents hunchback caused by leaning forward. This is especially important for the physical health of children and adolescents in the development stage. Furthermore, it can be adjusted according to the height and body type of different users, improving the versatility and adaptability of the bracket. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the device installed on the belt in this embodiment;

[0032] Figure 2 This is a three-dimensional structural diagram of this embodiment (the adjusting bracket is in the raised state);

[0033] Figure 3 This is a three-dimensional structural diagram of this embodiment (the adjusting bracket is in the lowered state);

[0034] Figure 4 This is a schematic diagram of the structure in the disassembled state of this embodiment;

[0035] Figure 6 This is a three-dimensional structural diagram of the fixing base in this embodiment;

[0036] Figure 5 This is a cross-sectional view of this embodiment;

[0037] Figure 7 This is a schematic diagram of the gravity decomposition and transmission of the backpack during use in this embodiment (the arrows indicate the direction of force transmission). Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Figures 1-7 The diagram shown is a schematic diagram of this embodiment. The backpack bracket in this embodiment mainly includes a fixed base 1, an adjusting bracket 2, and a locking device 3.

[0040] The bracket is mainly composed of a fixed base 1, an adjustable bracket 2, a locking device, and other 3 components. These components work together to transfer the weight of the backpack S to the hips, reduce shoulder pressure, and prevent hunchback. The specific structure and connection method of each component are described in detail below.

[0041] Mounting bracket 1: Reference Figure 4 and Figure 5 As shown, the fixing base 1 is the basic component of the entire bracket. It can be made of high-strength plastic and integrally molded through injection molding, which simplifies the production process, reduces manufacturing costs, and ensures the strength and stability of the overall structure. Its shape is ergonomically designed to fit the curve of the human waist. The fixing base 1 has a fixing groove 1a that runs through the bottom and side. The size and shape of the fixing groove 1a are precisely designed to fit common belts A or trouser belts. At the opening of the fixing groove 1a, a guide ramp 1a1 is specially designed to facilitate the smooth entry of the belt K or trouser belt into the fixing groove 1a from bottom to top, improving the ease of installation. The side of the fixing base 1 closest to the human body also has a vertically extending clearance groove 1c. The height of the clearance groove 1c is the same as the height of the side of the fixing base 1. It is mainly used to avoid the lumbar spine or belt buckles when wearing belts, effectively avoiding pressure on the protruding parts of the human body and improving the comfort of wearing the bracket.

[0042] Adjustable bracket 2: Reference Figure 3 and Figure 4 As shown, the adjustment bracket 2 includes an integrally formed adjustment part 21 and a support part 22. The adjustment bracket 2 can be made of lightweight aluminum alloy and manufactured through processes such as die casting or machining. Of course, other materials can also be used, as long as strength and lightweight are guaranteed. The adjustment part 21 is a slender rod-shaped structure with multiple vertically spaced ratchet teeth 21a evenly distributed on its sidewall. These ratchet teeth 21a can effectively engage with the locking device 3. The adjustment part 21 passes through the adjustment hole 1b on the fixed base 1. The size of the adjustment hole 1b is larger than the size of the adjustment part 21 to ensure that the adjustment part 21 can move up and down flexibly within the adjustment hole 1b. The support part 22 extends from the top of the adjustment part 21 in a direction away from the back of the human body. The top of the support part 22 forms a support surface 2a, which gradually slopes upward from the top of the adjustment part 21, forming an angle α with the horizontal plane. The angle α ranges from 3° to 8°, preferably 5°. This angle was determined through multiple ergonomic tests to better fit the shape of the bottom of the backpack S, improve the stability of the support, and help to better distribute and transmit the weight of the backpack S. The support surface 2a is also provided with dense first anti-slip textures 2a1 to increase friction and effectively prevent the backpack S from sliding on the support surface 2a. The adjustment part 21 is also provided with through holes 21b, which facilitate the passage of ropes or straps to further secure the backpack S and the bracket together.

[0043] Locking device 3: Reference Figures 4 to 6 As shown, the locking device 3 mainly consists of a latch 3a rotatably mounted on the fixed base 1, with the latch 3a and the fixed base 1 being integrally molded plastic parts. The latch 3a includes a hinge portion 3a1, a locking portion 3a2, and a pressing portion 3a3. A narrow thin wall is integrally formed between the hinge portion 3a1 and the fixed base 1, allowing the entire latch 3a to rotate flexibly relative to the fixed base 1. The locking portion 3a2 extends obliquely upward from the hinge portion 3a1, with its end being a locking end. When the latch 3a is not pressed, the locking end engages tightly with the ratchet 21a on the side wall of the adjusting portion 21, thereby firmly locking the adjusting bracket 2, adjusted to the target position, onto the fixed base 1. The pressing portion 3a3 extends obliquely downward from the hinge portion 3a1 and is used to receive external pressure to trigger unlocking. The surface of the pressing part 3a3 has a second anti-slip texture 3a4. When a finger presses the pressing part 3a3, the second anti-slip texture 3a4 increases the friction between the finger and the pressing part 3a3, making the pressing operation more sensitive and convenient, and facilitating the locking or unlocking of the adjustment part 21. Of course, the latch 3a can also be set separately from the fixed base 1, and the latch 3a can be rotatably connected to the fixed base 1 by means of a pin connection.

[0044] In practical use, refer to Figures 1 to 3 As shown, the user first inserts their waist belt K or trouser belt into the fixing groove 1a of the fixing seat 1 via the guide ramp 1a1, completing the initial fixing of the bracket. Based on their height and body type, the user presses the pressing part 3a3 of the buckle 3a to disengage the locking part 3a2 from the ratchet 21a. Then, the user moves the adjusting part 21 of the adjusting bracket 2 up and down to adjust to a suitable height. After releasing the pressing part 3a3, the locking part 3a2 of the buckle 3a engages again with the corresponding ratchet 21a, locking the adjusting bracket 2. Next, the backpack S is placed on the support surface 2a of the adjusting bracket 2. The first anti-slip texture 2a1 on the support surface 2a prevents the backpack S from sliding. If further fixing is needed, a rope or bag can be threaded through the perforation 21b on the adjusting part 21 to secure the backpack S to the bracket. At this point, by utilizing the lever principle, the weight of backpack S is transferred to the hips through the adjusting bracket 2, effectively reducing shoulder pressure. Users do not need to lean forward to balance the weight of backpack S, maintain the correct body posture, and thus prevent hunchback.

[0045] The working principle of the backpack's bracket is as follows:

[0046] refer to Figure 7As shown, when a person carries a backpack S with a bracket fixed to the bottom, the backpack S has a certain weight and will exert downward pressure. The directions indicated by the multiple arrows in the figure are the directions of force transmission. At the point of force application A (i.e., the contact point between the support surface 2a and the backpack S), due to the downward and forward position of the backpack S, a force with a certain angle and pointing backward and downward will be formed. This force will be transmitted to B (i.e., the connection between the waist belt K and the fixing seat 1). At the point of force application B, the force is further manifested in a downward and backward direction, which effectively reduces the vertical pressure of the backpack on the back, thereby reducing the burden on the back and reducing the risk of back fatigue, deformation and other problems caused by carrying a backpack for a long time.

[0047] At the same time, the force at point B will be transmitted synchronously to the force point C at the bottom of the fixed seat 1, so that point C is subjected to a forward reaction force. Based on the principle of interaction of forces, under the influence of the combined forces of points A, B, and C, a backward force will be formed at point D, which is located at the front of the belt. This backward force directly drives the human body to form an abdominal contraction action.

[0048] Through ingenious mechanical structure and force transmission, the downward force of the backpack S is gradually distributed to points A, B, C, and D. The downward pull originally concentrated on the waist belt is also dispersed, reducing the load on the waist belt K. This effectively distributes and reduces pressure on the back and waist, improving carrying comfort and health. Point E in the diagram is the point where the shoulder is pulled backward. Because point A is forward, it creates a backward pull on the shoulder, further preventing back curvature.

[0049] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "inner," "outer," "upper," and "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and simplifying the description, and do 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. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A backpack bracket, characterized in that: include A fixing seat (1) is provided with a fixing groove (1a) that extends through the bottom and side and can be adapted to a waist belt (K) or trouser belt; The adjustable bracket (2) is mounted on the fixed base (1) and can be raised and lowered. The top of the bracket has a support surface (2a) that can support the bottom of the backpack (S). A locking device (3) is provided on a fixed base (1) for locking the adjusting bracket (2) adjusted to the target position on the fixed base (1).

2. The backpack bracket according to claim 1, characterized in that: The adjustment bracket (2) includes an integrally formed adjustment part (21) and a support part (22). The fixed base (1) is provided with an adjustment hole (1b) that runs vertically through the base. The adjustment part (21) passes through the adjustment hole (1b). The support portion (22) extends from the top of the adjustment portion (21) in a direction away from the back of the human body, and the support surface (2a) is formed on the top of the support portion (22).

3. The backpack bracket according to claim 2, characterized in that: The support surface (2a) gradually tilts upward from the top of the adjustment part (21) and forms an angle α with the horizontal plane. The value of the angle α ranges from 3° to 8°.

4. The backpack bracket according to claim 1, characterized in that: A first anti-slip texture (2a1) is formed on the support surface (2a) to increase the friction between the support surface (2a) and the backpack (S).

5. The backpack bracket according to claim 2, characterized in that: The locking device (3) includes a latch (3a) rotatably disposed on the fixed base (1); The sidewall of the adjustment part (21) is provided with a plurality of ratchet teeth (21a) that are distributed vertically at intervals; When the latch (3a) is not pressed, its locking end engages with the corresponding ratchet (21a) to lock the adjusting bracket (2).

6. The backpack bracket according to claim 5, characterized in that: The latch (3a) includes: The hinge (3a1) is connected to the fixed base (1); The locking part (3a2) extends obliquely upward from the hinge part (3a1), and its end is the locking end; The pressing part (3a3) extends obliquely downward from the hinge part (3a1) and is used to receive external pressure to trigger unlocking.

7. The backpack bracket according to claim 6, characterized in that: The pressing part (3a3) is also provided with a second anti-slip texture (3a4) that increases friction when receiving external pressure.

8. The backpack bracket according to claim 5, characterized in that: The fixing base (1) and the buckle (3a) are integrally molded plastic parts.

9. The backpack bracket according to any one of claims 1 to 8, characterized in that: The fixed seat (1) also has a clearance groove (1c) that runs vertically through the side of the human body to avoid the protruding parts of the human body.

10. The backpack bracket according to claim 1, characterized in that: The groove opening of the fixing groove (1a) is also formed with a guide slope (1a1) for guiding the waist belt (K) or trouser belt into the fixing groove (1a) from bottom to top.

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