US20260000189A1

US20260000189A1 - Backpack structure

Info

Publication number: US20260000189A1
Application number: US19/247,667
Authority: US
Inventors: Xin-An Chen
Original assignee: Individual
Current assignee: Individual
Priority date: 2024-06-26
Filing date: 2025-06-24
Publication date: 2026-01-01
Also published as: EP4670570A1; JP2026005206A; TWI884818B; KR20260001091A; CN121196292A

Abstract

The invention discloses a backpack structure, which comprises a backpack body, an inverted U-shaped supporting rod, two elastic connecting belts and two shoulder straps. The inverted U-shaped supporting rod is located directly above the backpack body, has free ends at two ends, and a plurality of positioning grooves are disposed on the inverted U-shaped supporting rod; one end of each of the elastic connecting belts is connected to the free end of the inverted U-shaped supporting rod, and another end is connected to the backpack body; and the shoulder straps are correspondingly disposed on a back side of the backpack body on the left and right, one end of each of the shoulder straps is connected to the positioning groove of the inverted U-shaped supporting rod, and another end is movably connected to a lower side or a side of the backpack body.

Description

FIELD OF THE INVENTION

The invention relates to a backpack structure, particularly to a backpack structure capable of providing users with comfortable and labor-saving use.

BACKGROUND OF THE INVENTION

The conventional backpack at least comprises a backpack body 11 and two shoulder straps 12 for cooperating with the user's shoulders. The backpack body 11 is provided for the user to put any items that need to be carried with him or her. When the user carries the backpack on his shoulders, the weight of the backpack body 11 and the items therein can be supported through the shoulder straps 12 on the shoulders, or the backpack body 11 (including the items) can be carried by hand through the shoulder straps 12, thereby saving physical effort and making it convenient to move.
As shown in FIG. 1 and FIG. 2 , two ends of the shoulder strap 12 of a conventional backpack are correspondingly disposed on upper and lower sides of a back of the backpack body 11, and the backpack body 11 is placed in a direction away from the back of the user. Due to this limitation, and because the backpack body 11 (including the items) has a certain thickness in addition to weight, a vertical downward gravity W generated by the backpack body 11 and a position of a force F applied by the user's shoulders or hand to support the shoulder straps 12 do not fall on a common vertical line P, resulting in the generation of a force couple T. An additional force (not shown in the figures) other than the gravity W of the backpack body 11 is required, such as using the user's back to apply force or changing the body's center of gravity to balance the force couple T, which not only increases physical effort but also puts a burden on the spine of the user, negatively affecting physical health.
Furthermore, whether the backpack is carried by hand or on the shoulders, the user's body will displace regularly during walking. However, as mentioned above, the existing backpack directly shares the entire weight of the backpack body 11 through the two shoulder straps 12, which means that extra force must be applied to balance relative movements caused by the difference in positions between the user's body and the backpack, significantly increasing physical exertion.
In summary, the existing backpacks have the above-mentioned problem of increasing the burden on the body, and also shortening the range and time of movement when carrying the backpack. Therefore, the inventor of the invention and relevant manufacturers engaged in this industry are eager to research and make improvements to solve the above-mentioned problems and drawbacks in the prior art.

SUMMARY OF THE INVENTION

Therefore, in order to effectively solve the above-mentioned problems, one object of the invention is to provide a backpack structure capable of saving effort and providing a cushioning function.
In order to achieve the above-mentioned object, the invention provides a backpack structure comprising: a backpack body, an inverted U-shaped supporting rod, two elastic connecting belts and two shoulder straps. The inverted U-shaped supporting rod is located directly above the backpack body, has free ends at two ends, and a plurality of positioning grooves are disposed on the inverted U-shaped supporting rod; one end of each of the elastic connecting belts is connected to the free end of the inverted U-shaped supporting rod, and another end is connected to the backpack body; and the shoulder straps are correspondingly disposed on a back side of the backpack body at left and right, one end of each of the shoulder straps is connected to the positioning groove of the inverted U-shaped supporting rod, and another end is movably connected to a lower side or a side of the backpack body.
Thereby, the backpack structure of the invention enables a force application position of the shoulder strap to be directly above the backpack body, so during carrying the backpack structure, there will be no problem of requiring extra effort caused by an applied force and a gravity generated by a weight of the backpack body not being on a same vertical line, thereby reducing additional applied force and saving physical effort. Furthermore, by connecting the elastic connecting belts connected to the inverted U-shaped supporting rod to the backpack body, cushioning can be provided for a user during walking and moving, so that relative movements between the user's body and the backpack can be balanced with each other, which not only can save physical effort but also provide cushioning for the user's shoulders.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional backpack;

FIG. 2 is a side view of a conventional backpack;

FIG. 3 is an exploded perspective view of a backpack structure of the invention;

FIG. 4 is an assembly view of the backpack structure of the invention;

FIG. 5 is a rear view of the backpack structure of the invention;

FIG. 6 is a schematic diagram of the backpack structure in use according to an embodiment of the invention;

FIG. 7 is a schematic diagram of the backpack structure in use according to another embodiment of the invention; and

FIG. 8 is a rear view of another embodiment of the backpack structure of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The above objects of the invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the accompanying drawings.
Please refer to FIG. 3 for an exploded perspective view of a backpack structure of the invention; FIG. 4 for an assembly view of the backpack structure of the invention; FIG. 5 for a rear view of the backpack structure of the invention; FIG. 6 for a schematic diagram of the backpack structure in use according to an embodiment of the invention; FIG. 7 for a schematic diagram of the backpack structure in use according to another embodiment of the invention; and FIG. 8 for a rear view of another embodiment of the backpack structure of the invention.
As shown in FIGS. 3, 4, and 5 , the invention provides a backpack structure 2 comprising: a backpack body 21, an inverted U-shaped supporting rod 22, two elastic connecting belts 23 and two shoulder straps 24. Wherein the inverted U-shaped supporting rod 22 is located directly above the backpack body 21 and has free ends 221 at two ends. The inverted U-shaped supporting rod 22 has a plurality of positioning grooves 222. The backpack body 21 has a storage space (not shown in the figures) formed inside for a user to put in any items that need to be carried with him or her (e.g., notebook computer, documents, umbrella, water bottle, stationery, etc.), thereby increasing a weight of the backpack body 21.
At this time, the elastic connecting belts 23 are respectively connected to the free ends 221 of the inverted U-shaped supporting rod 22 at one end, and connected to the backpack body 21 at another end, for example, connected to sides 211; and the shoulder straps 24 are correspondingly disposed on a back side 212 of the backpack body 21 on the left and right, the shoulder straps 24 are respectively connected to the positioning grooves 222 of the inverted U-shaped supporting rod 22 at one end, and connected to a lower side 213 or the sides 211 of the backpack body 21 at another end. Thereby, the shoulder straps 24 are not directly connected to the backpack body 21 to transmit an applied force F or a gravity W of the backpack body 21, but the applied force F and the gravity W are transmitted through the inverted U-shaped supporting rod 22. Furthermore, since the inverted U-shaped supporting rod 22 is located directly above the backpack body 21, and especially vertically corresponds to a center-of-gravity position of the backpack body 21, as shown in FIG. 4 , when the applied force F or the gravity W is transmitted, the gravity W and the user's applied force F will substantially fall on a common vertical line P, thereby reducing a possibility of a force couple being formed between the two forces. Therefore, the user only needs to balance the gravity W of the backpack body 21 (including the items), which not only saves the user's physical effort but also reduces an impact on the user's health.
For example, the user can choose to carry the backpack structure 2 by passing the shoulder straps 24 through the shoulders or by holding the inverted U-shaped supporting rod 22. In detail, the inverted U-shaped supporting rod 22 is used for force transmission, and thus can be made of a material with a certain rigidity and hardness, such as plastic, wood or metal (e.g., extruded tube). Those skilled in the art can understand without any disagreement that the inverted U-shaped supporting rod 22 is not easily elastically or plastically deformed by external forces, causing relative positions of the applied force F and the gravity W to change; therefore, the invention is capable of maintaining the forces on the common vertical line P, while also ensuring that transmission of the forces will not be absorbed or dispersed due to deformation of a material under force.
Further, the inverted U-shaped supporting rod 22 has a horizontal section 22A corresponding to an upper side 214 of the backpack body 21, extending in opposite directions and connecting with two curved sections 22B being bent and extended corresponding to the sides 211 of the backpack body 21. The free ends 221 are respectively formed on the curved sections 22B. As shown in FIG. 8 , in another embodiment, the horizontal section 22A of the inverted U-shaped supporting rod 22 can cooperate with the upper side 214 of the backpack body 21 to form an arcuate rod as a whole, or even the horizontal section 22A and the curved sections 22B can jointly form an arcuate rod (not shown in the figures). In addition, each of the elastic connecting belts 23 can be a fabric belt, such as an elastic belt.
As shown in FIG. 6 and FIG. 7 , when the backpack structure 2 of the invention is in use, in one embodiment, the user passes the shoulder straps 24 through the shoulders or carries the inverted U-shaped supporting rod 22 by hand. Since the elastic connecting belts 23 connected to the inverted U-shaped supporting rod 22 are respectively connected to the sides 211 of the backpack body 21, a cushioning can be provided during movement. When the user moves, relative movements between the user's body and the backpack body 21 can be stored as an elastic potential energy through the elastic connecting belts 23, and then released when relative heights between the user's body and the backpack body 21 change, so that relative movements between the user's body and the backpack body 21 are balanced with each other, thereby saving physical effort that requires additional force for balancing in the prior art, providing an elastic cushioning effect between the user's body and the backpack body 21, and avoiding fatigue felt by the user.
As shown in FIG. 5 and FIG. 8 , through the horizontal section 22A and the curved sections 22B formed corresponding to the upper side 214 and the sides 211 of the backpack body 21, a static spacing H can be maintained between the inverted U-shaped supporting rod 22 and the backpack body 21. As shown in FIG. 5 and FIG. 6 , the backpack body 21 can further have at least one hanging lug 215, which is disposed on the upper side 214 or the side 211 of the backpack body 21 corresponding to the inverted U-shaped supporting rod 22, and the inverted U-shaped supporting rod 22 is inserted into the hanging lug 215. Each hanging lug 215 can also be an elastic fabric belt (for example, an elastic belt), enabling a certain elastic change between the inverted U-shaped supporting rod 22 and the backpack body 21 in response to relative movements, and assisting the elastic connecting belts 23 to provide cushioning for the above-mentioned relative movements generated when the user is moving.
Please refer to FIG. 7 , in another embodiment, the user can pass the shoulder straps 24 through the shoulders to carry the backpack body 21. At this time, because the backpack structure 2 of the invention is provided with the elastic connecting belts 23 and the hanging lug 215, both of which are elastic, when the user moves, a spacing between the backpack body 21 and the inverted U-shaped supporting rod 22 can be adjusted according to a state of relative movements. For example, when the user's back is supported against the backpack body 21 during movements, the shoulder straps 24 and the inverted U-shaped supporting rod 22 can be slightly tilted forward. At this time, a spacing between the backpack body 21 and the inverted U-shaped supporting rod 22 is larger than the static spacing H. After a force applied by the user disappears, rebounding to a corresponding position above the backpack body 21, and the spacing also returns to the static spacing H correspondingly.
In the invention, one of the ends of each of the shoulder straps 24 can be connected to one of the positioning grooves 222 by buckling, tight fitting, hooking or touch fastening. Similarly, the other ends of the elastic connecting belts 23 and the other ends of the shoulder straps 24 can be respectively connected to the backpack body 21 by buckling, tight fitting, hooking or touch fastening. Thereby, the inverted U-shaped supporting rod 22, the elastic connecting belts 23 and the shoulder straps 24 of the invention can be movably separated from the backpack body 21 to facilitate storage, maintenance, repair, and matching, etc., and can meet personalized requirements of users.
For example, one of the ends of each of the shoulder straps 24 can be connected to one of the positioning grooves 222 by buckling. In this embodiment, each of the positioning grooves 222 is formed as a through hole. As shown in FIG. 3 , a fixing member 243 can be disposed at one of the ends of each of the shoulder straps 24, and the fixing members 243 respectively correspond to the positioning grooves 222 to form a positioning hole 243A for at least one fastener 244 to pass through the positioning hole 243A and one of the positioning grooves 222 for positioning. It is worth noting that, since the inverted U-shaped supporting rod 22 is formed with the positioning grooves 222 correspondingly disposed on the left and right, the user can also adjust the shoulder straps 24 according to his/her shoulder width to symmetrically connect to two of the positioning grooves 222 that meet the user's personalized requirements. Further, the fixing members 243 can also respectively have a guide portion 243B for guiding the fixing members 243 to move axially along the inverted U-shaped supporting rod 22, so as to facilitate the user to adjust to suit a body width.
In another embodiment, the other ends of the elastic connecting belts 23 and the other ends of the shoulder straps 24 can also be respectively connected to the backpack body 21 by buckling. However, in this embodiment, buckling is illustrated by fixing a push-release buckle (not shown in the figures) in between, which has a snap-fitting portion and a joining portion. The snap-fitting portion is fixed to the joining portion through at least one elastic button formed on the snap-fitting portion. The user can separate the snap-fitting portion from the joining portion at any time by pressing the at least one elastic button.
At the same time, buckling can also be achieved by using a horizontal hollow spring latch. In addition, tight fitting can be achieved by clamping the shoulder straps 24 or the elastic connecting belts 23 with a toothed clip; hooking can be achieved by inserting the shoulder straps 24 or the elastic connecting belts 23 by using a spring hook and then rebounding to close an opening; and touch fastening can be achieved by attaching and fixing Velcro to each other. Furthermore, any other methods known in the art capable of achieving a movable connection to facilitate the user's personalized requirements are not limited thereto.
In summary, the inverted U-shaped supporting rod 22, the elastic connecting belts 23 or the shoulder straps 24 can be respectively made of different materials to match with different styles and colors according to the user's personal preferences, and can be movably connected to the backpack body 21 to create the backpack structure 2 of the invention with personal characteristics and uniqueness.

Claims

What is claimed is:

1. A backpack structure, comprising:

a backpack body;

an inverted U-shaped supporting rod, located directly above the backpack body, comprising free ends at two ends, and a plurality of positioning grooves being disposed on the inverted U-shaped supporting rod;

two elastic connecting belts, each having one end connected to one of the free ends of the inverted U-shaped supporting rod, and an other end connected to the backpack body; and

two shoulder straps, correspondingly disposed on a back side of the backpack body at left and right, one end of each of the shoulder straps being connected to one of the plurality of positioning grooves of the inverted U-shaped supporting rod, and an other end being movably connected to a lower side or a side of the backpack body.

2. The backpack structure as claimed in claim 1, wherein the two shoulder straps are connected to the positioning grooves by buckling, tight fitting, hooking or touch fastening.

3. The backpack structure as claimed in claim 2, wherein one end of each of the two shoulder straps is connected to one of the plurality of positioning grooves by buckling, a fixing member is disposed at one end of each of the two shoulder straps, each fixing member corresponds to one of the plurality of positioning grooves to form a positioning hole, and at least one fastener passes through the positioning hole and the positioning groove for positioning.

4. The backpack structure as claimed in claim 3, wherein each fixing member comprises a guide portion for guiding the fixing member to move axially along the inverted U-shaped supporting rod.

5. The backpack structure as claimed in claim 1, wherein the other ends of the two elastic connecting belts and the other ends of the two shoulder straps are respectively connected to the backpack body by buckling, tight fitting, hooking or touch fastening.

6. The backpack structure as claimed in claim 5, wherein the other ends of the two elastic connecting belts and the other ends of the two shoulder straps are respectively connected to the backpack body by buckling, a push-release buckle with a snap-fitting portion and a joining portion is fixed in between, the snap-fitting portion is fixed to the joining portion through at least one elastic button formed on the snap-fitting portion.

7. The backpack structure as claimed in claim 1, wherein the inverted U-shaped supporting rod comprises a horizontal section corresponding to an upper side of the backpack body, extending in opposite directions and connecting with two curved sections being bent and extended corresponding to the sides of the backpack body, the free ends are respectively formed on the curved sections.

8. The backpack structure as claimed in claim 7, wherein the inverted U-shaped supporting rod is separated from the backpack body by a static spacing.

9. The backpack structure as claimed in claim 8, wherein the backpack body further comprises at least one hanging lug disposed on the upper side or the side of the backpack body corresponding to the inverted U-shaped supporting rod, and the inverted U-shaped supporting rod is inserted into the hanging lug.

10. The backpack structure as claimed in claim 1, wherein each of the two elastic connecting belts is a fabric belt.