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] The invention relates to the technical field of backpack auxiliary technology, in particular to a backpack bracket. Background Art

[0002] In modern fast-paced life, students and office workers often need to carry heavy objects, such as school bags for students, computer bags for office workers, and backpacks for outdoor activities. The current traditional way of carrying heavy objects makes the weight of heavy objects mainly concentrated on the shoulders. When such school bags are in use, the weight is mainly transferred to the user's shoulders through the shoulder straps. Long-term use of this carrying method can easily cause excessive pressure on the shoulders, which in turn causes problems such as shoulder and neck pain and spinal compression. For children and adolescents who are in the stage of physical development, the burden of overweight school bags has a more serious impact, and hunchbacks are becoming more and more common. Relevant surveys show that the proportion of primary and secondary school students who have hunchbacks due to long-term carrying of heavy school bags is on the rise.

[0003] Most of the existing solutions to prevent hunchbacks revolve around the structure of the schoolbag itself or the way it is carried, by widening the shoulder straps or adding a back cushioning design. For example, the Chinese utility model patent with application number 201721558053.0 and authorization announcement number CN207532075U discloses a vest-type schoolbag that prevents hunchbacks by increasing the contact area between the schoolbag and the body at the shoulder and waist to reduce pressure and disperse the weight of the schoolbag to prevent hunchbacks. Another example is the Chinese utility model patent with application number 202322771534.1 and authorization announcement number CN220777680U discloses an anti-hunchback backpack, which is provided with straps extending from the fixing plates on both sides so that the straps surround and fix the backpack body from two directions, so that the backpack can be completely fixed on the back of the person, so that the backpack will not fall, and the stability of the backpack on the back of the human body is improved, so as to reduce the probability of hunchbacks.

[0004] However, the above backpacks have not effectively solved the core problem of uneven gravity distribution. The gravity is still concentrated on the shoulders, and the following defects still exist:

[0005] 1. Concentrated pressure on shoulders and waist: Traditional designs do not disperse gravity to other parts of the body, resulting in continuous stress on the shoulders and waist;

[0006] 2. Lack of ergonomic adaptation: The fixed structure is difficult to adapt to users of different body shapes and lacks adjustment flexibility;

[0007] 3. Unable to prevent hunchback: The center of gravity of the backpack is not changed through mechanical design, and the user still needs to lean forward to balance the weight;

[0008] Therefore, how to provide an auxiliary bracket that can hold up a school bag, so that it can be supported on the human body by combining with a waist belt, and use the principle of leverage to optimize the center of gravity distribution, transfer the weight of the school bag to the hips, reduce the pressure on the shoulders and waist, and ultimately effectively prevent the human body from leaning forward and causing hunchback phenomenon, and protect the health of users, especially children and adolescents, is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a backpack bracket that is supported on the human body by combining with a waist belt and optimizes the center of gravity distribution by utilizing the principle of leverage, thereby transferring the weight of the backpack to the hips to reduce shoulder pressure and effectively preventing the human body from leaning forward and causing hunchback phenomenon.

[0010] The technical solution adopted by the present invention to solve the above technical problems is: the bracket of the backpack includes

[0011] A fixing seat, which is provided with fixing grooves that penetrate the bottom and the side and can be adapted to a waist belt or a trouser belt;

[0012] An adjustment bracket is arranged on the fixing seat so as to be able to be raised and lowered, and a support surface is formed on the top thereof so as to be able to support the bottom of the backpack;

[0013] The locking device is arranged on the fixing seat and is used for locking the adjusting bracket adjusted to the target position on the fixing seat.

[0014] In order to optimize the overall structure of the adjustment bracket, make the adjustment of the adjustment bracket more flexible and convenient, and better provide support for the backpack, preferably, the adjustment bracket includes an adjustment part and a support part that are integrally arranged, the fixing seat is provided with an adjustment hole that passes through from top to bottom, and the adjustment part is inserted into the adjustment hole;

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

[0016] In order to make the support part better fit the shape of the bottom of the backpack and improve the stability of the support, while also helping to better disperse and conduct the gravity 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, and the angle ranges from 3° to 8°.

[0017] In order 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 pattern 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, so that the locking structure appears simple, reliable and easy to operate, preferably, the locking device includes a lock buckle rotatably arranged on the fixing seat;

[0019] The side wall of the adjusting portion is provided with a plurality of ratchet teeth distributed at intervals in the vertical direction;

[0020] When the lock buckle is not pressed, its locking end is engaged with the corresponding ratchet to lock the adjustment bracket.

[0021] In order to make the pressing and rotating of the lock buckle more sensitive so as to better achieve the locking or unlocking of the adjustment part, preferably, the lock buckle includes:

[0022] A hinged portion connected to the fixing seat;

[0023] A locking portion extending obliquely upward from the hinge portion, an end of which is the locking end;

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

[0025] In order to better perform the pressing operation on the pressing portion, preferably, the pressing portion is also formed with a second anti-slip pattern for increasing the friction force when receiving external pressure.

[0026] In order to simplify the production process and reduce the manufacturing cost, and improve the strength and stability of the overall structure, preferably, the fixing seat and the locking buckle are integrally formed plastic parts.

[0027] In order to avoid the lumbar vertebrae or the belt buckle, preferably, the side of the fixing seat close to the human body is also formed with an avoidance groove running through from top to bottom to avoid the protruding parts of the human body. The design of the avoidance groove improves the comfort of wearing the bracket and avoids pressure on the protruding parts of the human body.

[0028] In order to improve the convenience of installation and enable the waist belt or trousers belt to be installed in the fixing groove more easily, preferably, a guiding inclined surface for guiding the waist belt or trousers belt to enter the fixing groove from bottom to top is also formed at the notch of the fixing groove.

[0029] In order to better fix the backpack and the bracket together, preferably, the adjustment part is also provided with holes running through from top to bottom to facilitate the passage of ropes or bags.

[0030] Compared with the prior art, the advantages of the present invention are: by arranging the adjustment bracket on the fixed seat in a liftable manner, and arranging a fixing groove on the fixed seat so that it can be quickly positioned on the waist belt or trouser belt, and arranging a supporting surface that can support the bottom of the backpack on the adjustment bracket, the weight of the backpack is transferred to the hips by utilizing the lever principle, thereby changing the situation in which the gravity 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 eliminates the need for the user to lean forward to balance the weight of the backpack, helps to maintain a correct body posture, and effectively prevents the hunchback phenomenon caused by the human body leaning forward, which is of great significance to the physical health of children and adolescents in the stage of physical development, and can be adjusted according to the height and body shape of different users, thereby improving the versatility and adaptability of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the embodiment installed on a waist belt;

[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of this embodiment (the adjustment bracket is in an ascending state);

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

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

[0035] Figure 6 Schematic diagram of the three-dimensional structure of the fixing seat in this embodiment;

[0036] Figure 5 is a cross-sectional schematic diagram of this embodiment;

[0037] Figure 7 Schematic diagram of gravity decomposition and conduction of the backpack during use in this embodiment (the direction of the arrow is the direction of force conduction). DETAILED DESCRIPTION

[0038] The present invention is further described in detail below with reference to the accompanying drawings.

[0039] Figures 1 to 7 What is shown is a schematic diagram of this embodiment. The bracket of the backpack in this embodiment mainly includes a fixing seat 1, an adjustment bracket 2 and a locking device 3, etc.

[0040] The bracket is mainly composed of 3 parts, including a fixing seat 1, an adjustment bracket 2, and a locking device. The parts cooperate with each other to achieve the function of transferring the weight of the backpack S to the hips, reducing shoulder pressure, and preventing hunchback. The specific structure and connection method of each part are described in detail below.

[0041] Mount 1: Reference Figure 4 and Figure 5 As shown, the fixing seat 1 is the basic component of the whole bracket, which can be made of high-strength plastic material and formed in one piece through injection molding, which not only simplifies the production process and reduces the production cost, but also ensures the strength and stability of the overall structure. Its shape design conforms to ergonomics and fits the waist curve of the human body. The fixing seat 1 is provided with a fixing groove 1a that runs through the bottom and the side. The size and shape of the fixing groove 1a are precisely designed to fit the common waist belt A or trouser belt tightly. At the notch of the fixing groove 1a, a guiding slope 1a1 is specially designed to facilitate the waist belt K or trouser belt to enter the fixing groove 1a smoothly from bottom to top, thereby improving the convenience of installation. The side of the fixing seat 1 close to the human body is also formed with an avoidance groove 1c that runs through the upper and lower parts. The height of the avoidance groove 1c is consistent with the height of the side of the fixing seat 1, which is mainly used to avoid the lumbar spine of the human body or the belt buckle when wearing a belt, effectively avoiding the pressure on the convex part of the human body, and improving the comfort of wearing the bracket.

[0042] Adjustment bracket 2: Reference Figure 3 and Figure 4 As shown, the adjustment bracket 2 includes an adjustment portion 21 and a support portion 22 that are integrally arranged. The adjustment bracket 2 can be made of a lightweight aluminum alloy and manufactured by processes such as die casting or machining. Of course, we can also use other materials to make it, as long as its strength and lightness are guaranteed. The adjustment portion 21 is a slender rod-shaped structure, and its side wall is evenly distributed with a plurality of ratchets 21a with a vertical interval of 5 mm, and the ratchets 21a can effectively engage with the locking device 3. The adjustment portion 21 is arranged in an adjustment hole 1b that runs through the fixing seat 1 from top to bottom. The size of the adjustment hole 1b is larger than the size of the adjustment portion 21, ensuring that the adjustment portion 21 can be flexibly raised and lowered in 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. The top of the support portion 22 forms a support surface 2a, which gradually tilts upward from the top of the adjustment portion 21, and forms an angle a with the horizontal plane. The value range of the angle a is 3° to 8°, and the preferred angle a is 5°. This angle has been determined through multiple ergonomic tests, and can better fit the shape of the bottom of the backpack S, improve the stability of the support, and help to better disperse and conduct the gravity of the backpack S. The support surface 2a is also provided with dense first anti-slip grooves 2a1 to increase friction and effectively prevent the backpack S from sliding on the support surface 2a. The adjustment portion 21 is also provided with a through hole 21b that runs through from top to bottom, which is convenient for a rope or belt to pass through, and is used to further fix the backpack S and the bracket together.

[0043] Locking device 3: Reference Figures 4 to 6As shown, the locking device 3 is mainly composed of a lock buckle 3a rotatably arranged on the fixed seat 1, and the lock buckle 3a and the fixed seat 1 are integrally formed plastic parts. The lock buckle 3a includes a hinged portion 3a1, a locking portion 3a2 and a pressing portion 3a3. A narrow thin wall is integrally formed between the hinged portion 3a1 and the fixed seat 1, and the thin wall enables the entire lock buckle 3a to rotate flexibly relative to the fixed seat 1. The locking portion 3a2 extends obliquely upward from the hinged portion 3a1, and the end is a locking end. When the lock buckle 3a is not pressed, the locking end is tightly engaged with the ratchet 21a of the side wall of the adjustment portion 21, thereby firmly locking the adjustment bracket 2 adjusted to the target position on the fixed seat 1. The pressing portion 3a3 extends obliquely downward from the hinged portion 3a1, and is used to receive external pressure to trigger unlocking. The surface of the pressing portion 3a3 is formed with a second anti-slip pattern 3a4. When a finger presses the pressing portion 3a3, the second anti-slip pattern 3a4 increases the friction between the finger and the pressing portion 3a3, making the pressing operation more sensitive and convenient, and facilitating the locking or unlocking of the adjusting portion 21. Of course, the lock buckle 3a here can also be provided separately from the fixing seat 1, and the lock buckle 3a can be rotatably connected to the fixing seat 1 by a pin connection.

[0044] In actual use, refer to Figures 1 to 3 As shown, the user first inserts the belt K or trouser belt he / she is wearing into the fixing groove 1a of the fixing seat 1 smoothly through the guiding inclined surface 1a1 to complete the preliminary fixing of the bracket. According to his / her own height and body shape, the user presses the pressing part 3a3 of the lock buckle 3a to disengage the locking part 3a2 from the ratchet 21a, and then moves the adjusting part 21 of the adjusting bracket 2 up and down. After adjusting to a suitable height, release the pressing part 3a3, and the locking part 3a2 of the lock buckle 3a engages with the corresponding ratchet 21a again to lock the adjusting bracket 2. Then, place the backpack S on the supporting surface 2a of the adjusting bracket 2. The first anti-slip pattern 2a1 on the supporting surface 2a prevents the backpack S from sliding. If further fixing is required, a rope or bag can be inserted through the through hole 21b on the adjusting part 21 to tie the backpack S to the bracket. At this time, by using the lever principle, the gravity of the backpack S is transferred to the hips by adjusting the bracket 2, which effectively reduces the shoulder pressure. The user does not need to lean forward to balance the weight of the backpack S and maintain a correct body posture, thereby preventing the occurrence of hunchback.

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

[0046] refer to Figure 7As shown, when a person carries a backpack S with a bracket fixed at the bottom, the backpack S has a certain weight and will exert downward pressure. The directions shown by the multiple arrows in the figure are all force transmission directions. At the force point 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 backward and downward force with a certain angle will be formed. This force will be transmitted to B (i.e., the connection between the belt K and the fixed seat 1). At the force point 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 due to long-term carrying of the backpack.

[0047] At the same time, the force at point B will be synchronously transmitted to the force point C at the bottom of the fixed seat 1, causing point C to be 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 at the front of the waist belt. This backward force directly drives the human body to form an abdominal contraction movement.

[0048] Through the ingenious mechanical structure and force transmission, the downward gravity of the backpack S is gradually decomposed to A, B, C, and D, and the downward pulling force originally concentrated on the waist belt is also dispersed, reducing the load on the waist belt K, achieving effective dispersion and reduction of the pressure on the back and waist of the human body, and improving the comfort and health of carrying. The force point E in the figure is the force point that drives the shoulders backward. Since the force point A is forward, it will form a pulling force on the shoulders backward, which has the function of further preventing the back from bending.

[0049] It should be noted that in the description of this embodiment, the terms "front, back", "left, right", "inside, outside", "upper, lower" and the like indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A backpack bracket, characterized in that: include A fixing seat (1) having a fixing groove (1a) penetrating the bottom and the side and capable of being fitted on a waist belt (K) or a trouser belt; An adjustment bracket (2) is arranged on the fixing seat (1) and can be raised and lowered, and a support surface (2a) is formed on the top thereof and can support the bottom of the backpack (S); A locking device (3) is arranged on the fixing seat (1) and is used to lock the adjustment bracket (2) adjusted to a target position on the fixing seat (1).

2. The backpack bracket according to claim 1, characterized in that: The adjustment bracket (2) comprises an adjustment portion (21) and a support portion (22) which are integrally arranged; the fixing seat (1) is provided with an adjustment hole (1b) which passes through the fixing seat (1) from top to bottom; and the adjustment portion (21) is inserted into the adjustment hole (1b); The support portion (22) extends from the top end of the adjustment portion (21) in a direction away from the back of the human body, and the support surface (2a) is formed at 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 portion (21), and forms an angle a with the horizontal plane, wherein the angle a has a value ranging from 3° to 8°.

4. The backpack bracket according to claim 1, characterized in that: The support surface (2a) is provided with a first anti-slip pattern (2a1) for increasing 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) comprises a lock buckle (3a) rotatably arranged on the fixing seat (1); The side wall of the adjusting portion (21) is provided with a plurality of ratchet teeth (21a) distributed at intervals in the vertical direction; When the lock buckle (3a) is not pressed, its locking end engages with the corresponding ratchet (21a) to lock the adjustment bracket (2).

6. The backpack bracket according to claim 5, characterized in that: The lock buckle (3a) comprises: A hinged portion (3a1) connected to the fixing seat (1); A locking portion (3a2) extending obliquely upward from the hinge portion (3a1), an end of which is the locking end; The pressing portion (3a3) extends obliquely downward from the hinge portion (3a1) and is used to receive external pressure to trigger unlocking.

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

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

9. The backpack bracket according to any one of claims 1 to 8, characterized in that: The side of the fixing seat (1) close to the human body is also formed with an avoidance groove (1c) penetrating from top to bottom for avoiding the protruding parts of the human body.

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

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