Backpack structure

Abstract

To provide a backpack having a cushioning function to reduce the burden on the body. [Solution] A backpack structure 2 is disclosed, which includes a backpack body 21, an inverted U-shaped support rod 22, two elastic connecting straps 23, and two shoulder straps 24. The inverted U-shaped support rod is located directly above the backpack body, with both ends at the top and bottom being free, and the inverted U-shaped support rod has multiple positioning grooves 222, with one end of each elastic connecting strap connected to the free end 221 of the inverted U-shaped support rod and the other end connected to the backpack body, and the shoulder straps are provided on the left and right sides of the back of the backpack body, with one end of each shoulder strap connected to the positioning groove of the inverted U-shaped support rod and the other end movably connected to the underside or side of the backpack body.

Description

Technical Field

[0001] The present invention relates to a backpack structure, and particularly to a labor-saving backpack structure that allows users to use it more comfortably.

Background Art

[0002] Conventional backpacks include at least a backpack body 11 and two shoulder straps 12 that fit on the user's shoulders. The backpack body 11 contains the items carried by the user. When the user carries it on the back, by hanging the shoulder straps 12 on the shoulders to support the weight of the backpack body 11 and its contents or by holding the shoulder straps 12 in the hand, the user can carry and move the backpack body 11 containing the items without using much physical strength.

[0003] As shown in FIGS. 1 and 2, both ends of the shoulder straps 12 of the conventional backpack are provided corresponding to the upper and lower sides of the back of the backpack body 11, and the backpack body 11 is provided so as to be away from the back. And since the backpack body 11 containing the items not only has weight but also has a certain thickness, the position of the vertical downward gravity W by the backpack body 11 and the acting force F when the user carries it on the back or holds the shoulder straps 12 in the hand is not on the same vertical line P, and torque T is generated. For example, an acting force (not shown) greater than the gravity W of the backpack body 11 is required, such as applying force to the back or changing the body's center of gravity to offset the torque T, which not only consumes more physical strength but also affects health by burdening the spine.

[0004] Also, whether the user holds it in the hand or carries it on the back and moves, when the user walks and moves, the body is regularly displaced, and the above conventional backpack directly shares the total weight of the backpack body 11 through the two shoulder straps 12. As a result, an additional acting force is required to offset the relative movement caused by the position change between the body and the backpack during movement, resulting in more physical strength being consumed.

[0005] As mentioned above, conventional backpacks have the problem of increasing the burden on the body, and the range and time of movement are limited when carrying a backpack. Therefore, how to overcome the above-mentioned conventional problems and drawbacks is the direction of improvement work for inventors or those skilled in the art. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] Therefore, one objective of the present invention to effectively solve the above problems is to provide a labor-saving backpack structure that has a cushioning function. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a backpack structure comprising a backpack body, an inverted U-shaped support rod, two elastic connecting straps, and two shoulder straps. The inverted U-shaped support rod is located directly above the backpack body, with both ends being free ends, and has a plurality of positioning grooves. One end of the elastic connecting straps is connected to the free end of the inverted U-shaped support rod, and the other end is connected to the backpack body. The shoulder straps are provided on the back of the backpack body, corresponding to the left and right sides, with one end of each shoulder strap connected to the positioning groove of the inverted U-shaped support rod, and the other end movably connected to the underside or side of the backpack body. [Effects of the Invention]

[0008] As a result, in the backpack structure of the present invention, the force applied by the shoulder straps is located directly above the backpack body. Therefore, when carrying the backpack, the problem of using extra physical strength because the force applied and the gravitational force generated by the weight of the backpack body are not on the same vertical line is eliminated, and further, additional force is reduced, resulting in labor savings. In addition, the elastic connecting strap connected to the inverted U-shaped support rod is further connected to the backpack body, which provides cushioning when the user walks, and the relative movement between the body and the backpack cancels each other out, resulting in labor savings and cushioning for the user's shoulders. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of a conventional backpack. [Figure 2] This is a side view of a conventional backpack. [Figure 3] This is an exploded schematic diagram of the backpack structure of the present invention. [Figure 4] This is a schematic diagram illustrating the assembly of the backpack structure of the present invention. [Figure 5] This is a rear view of the backpack structure of the present invention. [Figure 6] This is a schematic diagram showing one embodiment of the backpack structure of the present invention in use. [Figure 7] This is a schematic diagram illustrating another embodiment of the backpack structure of the present invention in use. [Figure 8] This is a rear view of another embodiment of the backpack structure of the present invention. [Modes for carrying out the invention]

[0010] The above-mentioned objectives of the present invention, as well as its structural and functional characteristics, will be explained below through preferred embodiments shown in the drawings.

[0011] Please refer to Figure 3, an exploded schematic diagram of the backpack structure of the present invention; Figure 4, an assembled schematic diagram of the backpack structure of the present invention; Figure 5, a rear view of the backpack structure of the present invention; Figure 6, a schematic diagram of one embodiment of the backpack structure of the present invention in use; Figure 7, a schematic diagram of another embodiment of the backpack structure of the present invention in use; and Figure 8, a rear view of another embodiment of the backpack structure of the present invention.

[0012] As shown in Figures 3 to 5, the present invention provides a backpack structure 2 comprising a backpack body 21, an inverted U-shaped support rod 22, two elastic connecting straps 23, and two shoulder straps 24. The inverted U-shaped support rod 22 is located directly above the backpack body 21, with free ends 221 at both ends, and has a plurality of positioning grooves 222. Inside the backpack body 21, there is a storage space (not shown) for the user to put items such as a laptop, files, umbrella, water bottle, and stationery, which increases the weight.

[0013] In this case, each of these elastic connecting straps 23 is connected at one end to the free end 221 of the inverted U-shaped support rod 22 and at the other end to the backpack body 21, for example, to the side 211. The shoulder straps 24 are provided on the back 212 of the backpack body 21 corresponding to the left and right sides, and each of these shoulder straps 24 is connected at one end to the positioning groove 222 of the inverted U-shaped support rod 22 and at the other end to the lower side 213 or side 211 of the backpack body 21. As a result, the shoulder straps 24 do not transmit the applied force F or receive its gravity W directly from the backpack body 21, but rather transmit the force via the inverted U-shaped support rod 22. Furthermore, the inverted U-shaped support rod 22 is positioned directly above the backpack body 21, and in particular, it is perpendicular to the center of gravity of the backpack body 21. As shown in Figure 4, when transmitting the applied force F or gravity W, gravity W and the force F applied by the user are substantially located on the same vertical line P. This reduces the torque generated between the two forces, and the user only needs to counteract the gravity W of the backpack body 21 containing its contents. This not only saves the user's physical strength but also reduces the impact on the user's health.

[0014] For example, the user can carry these shoulder straps 24 over their shoulders or hold the inverted U-shaped support rod 22 in their hand. More specifically, the inverted U-shaped support rod 22 can be manufactured from a material having a certain rigidity and hardness, such as plastic, wood, or metal (e.g., an extruded tube), in order to transmit force. Those skilled in the art will clearly understand that it is unlikely that elastic or plastic deformation will occur in the inverted U-shaped support rod 22 due to the influence of external forces, causing a change in the relative positions of both the applied force F and gravity W. The present invention not only positions the forces on the same vertical line P, but also ensures that the force is not absorbed or dispersed by deformation of the material due to external forces while it is being transmitted.

[0015] Furthermore, the inverted U-shaped support rod 22 has a horizontal section 22A that corresponds to the upper part 214 of the backpack body 21 and extends in the opposite direction, connecting to two curved sections 22B. The curved sections 22B are bent and extend corresponding to the lateral part 211 of the backpack body 21, and their free ends 221 are formed on these curved sections 22B, respectively. As shown in Figure 8, in another embodiment, the horizontal section 22A of the inverted U-shaped support rod 22 may together with the upper part 214 of the backpack body 21 to form an arc-shaped rod, or the horizontal section 22A and the curved section 22B may together form an arc-shaped rod (not shown). Also, these elastic connecting straps 23 may be woven belts, such as rubber bands.

[0016] As shown in Figures 6 and 7, when using the backpack structure 2 of the present invention, in one embodiment, the user either places these shoulder straps 24 over their shoulders or holds the inverted U-shaped support rod 22 in their hand. Since these elastic connecting straps 23, which are connected to the inverted U-shaped support rod 22, are each connected to the sides 211 of the backpack body 21, they can cushion movement. When the user is moving, the relative movement between the body and the backpack body 21 is stored as elastic energy through these elastic connecting straps 23 and released when the relative height between the body and the backpack body 21 changes. As a result, the relative movements between the two cancel each other out, saving the physical effort equivalent to the additional force required to cancel each other out, as in conventional methods. This provides an elastic cushioning effect between the user's body and the backpack body 21, preventing user fatigue.

[0017] Furthermore, as shown in Figures 5 and 8, a static distance H is maintained between the inverted U-shaped support rod 22 and the backpack body 21 via horizontal portions 22A and curved portions 22B formed corresponding to the upper portion 214 and lateral portion 211 of the backpack body 21. In addition, as shown in Figures 5 and 6, the backpack body 21 may have at least one more lug 215, which is provided on the upper portion 214 or lateral portion 211 of the backpack body 21 corresponding to the inverted U-shaped support rod 22, through which the inverted U-shaped support rod 22 is inserted. The multiple lugs 215 may also be elastic braided belts such as rubber bands, and are permitted to cause a certain elastic change in relative motion between the inverted U-shaped support rod 22 and the backpack body 21, and together with these elastic connecting straps 23, they can cushion the relative motion that occurs while the user is moving.

[0018] Furthermore, as shown in Figure 7, in another embodiment, the user can also carry the backpack body 21 by placing these shoulder straps 24 over their shoulders. In this case, the backpack structure 2 of the present invention is provided with these elastic connecting straps 23 and a plurality of lugs 215, both of which are elastic, so that when the user is moving, the distance between the backpack body 21 and the inverted U-shaped support rod 22 is adjusted according to the state of relative movement. For example, when the user presses their back against the backpack body 21 while moving, these shoulder straps 24 and the inverted U-shaped support rod 22 can tilt slightly forward, and at this time the distance between the backpack body 21 and the inverted U-shaped support rod 22 is greater than the static distance H, and when the force applied by the user is removed, they return to the corresponding position directly above the backpack body 21, and the distance returns accordingly to the static distance H.

[0019] In the present invention, one end of these shoulder straps 24 may be connected to these positioning grooves 222 by engagement, interference fit, hanging, or adhesion. Similarly, the other ends of these elastic connecting straps 23 and the other ends of these shoulder straps 24 may also be connected to the backpack body 21 by engagement, interference fit, hanging, or adhesion, respectively. Thereby, in the present invention, the inverted U-shaped support rod 22, these elastic connecting straps 23, and these shoulder straps 24 can be movably separated from each other with respect to the backpack body 21, and accommodation, maintenance, repair, selection, etc. can be performed in accordance with the individual needs of the user.

[0020] For example, one end of these shoulder straps 24 may be engaged and connected to these positioning grooves 222. In this embodiment, through holes are formed in these positioning grooves 222, respectively. As shown in FIG. 3, fixing parts 243 may be provided at one end of each shoulder strap 24. These fixing parts 243 form positioning holes 243A corresponding to these positioning grooves 222, respectively, and at least one fastener 244 is passed through and restricted in the positioning holes 243A and the positioning grooves 222 simultaneously. Since these positioning grooves 222 are formed corresponding to each other on the left and right of the inverted U-shaped support rod 22, the user can adjust these shoulder straps 24 according to their shoulder width and symmetrically connect them to two of these positioning grooves 222 to meet the individual needs of the user. Further, these fixing parts 243 may further have guide parts 243B for guiding these fixing parts 243 to move axially along the inverted U-shaped support rod 22 in the inverted U-shaped support rod 22 so that the user can adjust them by himself to fit the width of the body part.

[0021] In another embodiment, the other ends of these elastic connecting straps 23 and the other ends of these shoulder straps 24 may also be engaged and connected to the backpack body 21 respectively. However, in this embodiment, the engagement is shown such that a press-and-release buckle (not shown) having an engaging portion and a joining portion is fixed therebetween. The engaging portions are fixed to each other by at least one elastic button formed on the engaging portion, and the user can separate the two from each other at any time by pressing the at least one elastic button.

[0022] Also, the engagement can be realized by adopting a laterally hollow spring pin. In the case of interference fit, for example, it can be realized by tightening these shoulder straps 24 or elastic connecting straps 23 with a toothed clip. In the case of hanging, it can be realized by hanging a spring hook on these shoulder straps 24 or elastic connecting straps 23 and bouncing it back to close the mouth. In the case of adhesion, it can be realized by sticking surface fasteners to each other and fixing them. Not limited to this, as a conventional technology in the art that can realize a movable connection, as long as it can meet the individual needs of the user, it can be adopted.

[0023] As described above, the reverse U-shaped support rod 22, these elastic connecting straps 23 or these shoulder straps 24 can be movably connected to the backpack body 21 according to the individual desires of the user, and different materials, styles, and colors can be selected from those that can be movably connected. Thereby, the unique backpack structure 2 of the present invention that only the user has can be obtained.

[0024] Although the present invention has been described in detail above, it is only a preferred embodiment of the present invention and does not limit the scope of implementation of the present invention. Based on the claims of the present invention, when equivalent changes and modifications are made, any of them belongs to the protection scope of the present invention.

Explanation of Reference Numerals

[0025] 11 Backpack body 12 Shoulder Straps 2 Backpack Structure 21 Backpack body 211 Lateral 212 Back 213 Lower side 214 Upper side 215 rug 22 Inverted U-shaped support rod 22A horizontal section 22B Curved section 221 Free end 222 Positioning groove 23 Elastic connecting straps 24 Shoulder Straps 243 Fixing parts 243A Positioning hole 243B Guide section 244 Fasteners F acting force W gravity T Torque P vertical line H Static distance

Claims

1. It has a backpack structure, The backpack body and An inverted U-shaped support rod located directly above the backpack body, having free ends at both ends and a plurality of positioning grooves, Two elastic connecting straps, one end of which is connected to the free end of the inverted U-shaped support rod and the other end of which is connected to the backpack body, Two shoulder straps are provided on the back of the backpack body, corresponding to the left and right sides, with one end of each strap connected to a positioning groove of the inverted U-shaped support rod and the other end of each strap being movably connected to the lower or side of the backpack body. A backpack structure characterized by including the following.

2. The backpack structure according to claim 1, characterized in that these shoulder straps are connected to these positioning grooves by engagement, interlocking, fastening, or adhesive.

3. The backpack structure according to claim 2, characterized in that one end of each shoulder strap is connected by engaging with these positioning grooves, a fixing component is provided at one end of each shoulder strap, each of these fixing components forms a positioning hole corresponding to these positioning grooves, and at least one fastener is restricted to pass through the positioning hole and these positioning grooves simultaneously.

4. The backpack structure according to claim 3, characterized in that each of these fixing parts has a guide portion that guides the fixing part and moves it axially along the inverted U-shaped support rod.

5. The backpack structure according to claim 1, characterized in that the other ends of these elastic connecting straps and the other ends of these shoulder straps are connected to the backpack body by engagement, interlocking, fastening, or adhesive, respectively.

6. The backpack structure according to claim 5, characterized in that the other ends of these elastic connecting straps and the other ends of these shoulder straps are engaged and connected to the backpack body, respectively, and a press-release buckle having an engaging portion and a joining portion is fixed between them, respectively, and the engaging portion and the joining portion are fixed to each other by at least one elastic button formed on the engaging portion.

7. The backpack structure according to claim 1, wherein the inverted U-shaped support rod has a horizontal portion that corresponds to the upper side of the backpack body and extends in the opposite direction, connecting to two curved portions, the curved portions bend and extend corresponding to the sides of the backpack body, and the two free ends are each formed in these curved portions.

8. The backpack structure according to claim 7, characterized in that there is a static distance between the inverted U-shaped support rod and the backpack body.

9. The backpack structure according to claim 8, wherein the backpack body further has at least one lug, the lug being provided on the upper or side of the backpack body in correspondence with the inverted U-shaped support rod, and the inverted U-shaped support rod being inserted therein.

10. The backpack structure according to claim 1, characterized in that these elastic connecting straps are braided belts.

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