Backpack-type load support device

Abstract

To provide a support device for a shoulder-carried load that makes the carried load feel even a little lighter, prevents heat buildup from perspiration, is simple and safe to use, offers excellent comfort in use, and is inexpensive.SOLUTION: A backpack-type load support device comprises: a rotary shaft portion horizontally installed near a lower back portion of a backpack-type load; a flat waist-support plate member having one side rotatably connected to the rotary shaft portion; and two shoulder-belt strut members each having one end rotatably connected to respective ends of the rotary shaft portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a new luggage support device for backpacks, rucksacks, and other backpack-type luggage with shoulder straps, and it features three fulcrums: the shoulders, a luggage support base for the backpack, and a lumbar support plate connected to the luggage support base via a rotating shaft. The device also features shoulder belt tension rods attached to the shoulder belts at both ends of the rotating shaft. The device utilizes the tension generated by pushing in the shoulder belts to provide stable support, while also providing relief from back sweat. It is designed to eliminate the perceived weight problem and back discomfort. [Background technology]

[0002] Backpacks, such as school bags and backpacks, are widely used because they leave both hands free and allow the load to be balanced on both sides, making them ideal for children who are still growing and developing their skeletons, and for carrying heavy loads when hiking, etc. However, although various proposals have been made to reduce the perceived weight and eliminate the discomfort of the bag being pressed against the back, no solution that combines both of these points has yet been established.

[0003] As mentioned above, it goes without saying that making heavy luggage feel as light as possible in any environment, eliminating hygiene issues and discomfort caused by stuffiness between the luggage and the back, and traveling comfortably are important issues in this stressful society. Various proposals have been made in the prior literature listed below to solve the above two problems.

[0004] Patent Document 1 (Utility Model Registration No. 3186156), a registered utility model for reducing the perceived weight of luggage, proposes a solution in light of the current situation in which, despite recent improvements to school backpacks, such as weight reduction, load distribution, and center of gravity adjustment, school backpacks themselves are becoming larger in size to improve storage capacity. The drawback of larger school backpacks is that the contents of the backpacks swing around significantly whenever a child moves actively, such as walking or running, increasing the perceived weight. This document discloses a technical concept that involves sloping the interior bottom of the school backpack, which allows the contents inside to tilt toward the back, reducing swinging and shifting the center of gravity toward the back, thereby reducing the perceived weight. However, sloping the interior requires ingenuity when storing school materials and tools depending on their shape and quantity, and younger students may have difficulty fitting them in straight. This is a concern not only for school backpacks, but for all backpack-type luggage.

[0005] Although it is an application filed before the request for examination, Patent Document 2, JP 2022-172484, proposes an idea of ​​providing an inner basket inside the school bag, which is suspended from above, thereby raising the center of gravity of the luggage and reducing the perceived weight. It is widely recognized that placing the center of gravity higher reduces the perceived weight, but in this case there is a limit to how high the center of gravity can be placed, and floating the stored items causes shaking, so it is unclear whether the perceived weight reduction will be felt.

[0006] Regarding the discomfort felt on the back by backpacks, for example, Patent Document 3, Patent No. 4128211, discloses a technical concept for eliminating the discomfort caused by stuffiness, which occurs when a backpack is worn too tightly to make it easier to carry, resulting in poor breathability. In Document 3, a polypropylene substrate is coated with polyurethane in a specific combination arranged in an uneven pattern to create airflow, eliminating stuffiness, and forming a main air flow path vertically in the center of the substrate is expected to have the effect of distributing the load. However, the surface area that comes into contact with the back is large, and there are concerns that the polyurethane material used may have heat-retaining properties.

[0007] Furthermore, Patent Document 4, Patent No. 6829850, discloses the technical concept of a backpack in which an airbag that can be inflated or deflated using a mouth or pump is attached to the lower part of the back side of the backpack. This also aims to eliminate hygiene problems and discomfort caused by sweat on the back, but it is expected that there will be cases where the act of inflating and deflating using a mouth or pump will be found inconvenient. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Utility Model Registration No. 3186156 [Patent Document 2] Japanese Patent Publication No. 2022-172484 [Patent Document 3] Patent No. 4128211 [Patent Document 4] Patent No. 6829850 Summary of the Invention [Problem to be solved by the invention]

[0009] Based on the technologies and technological ideas used up until now, various proposals have been made for backpacks and other types of luggage to reduce the perceived weight and eliminate the discomfort caused by sweaty backs.

[0010] For example, first graders who carry school backpacks that take up as much as one-third of their bodies sweat as they walk to and from school. The perceived weight problem, which could cause problems for the child's physical and mental development, needs to be addressed as soon as possible.

[0011] Furthermore, the problem of heatstroke in the unusually high summer temperatures caused by global warming is serious, and the discomfort of a stuffy back can be one of the causes. If your back sweats and your clothes remain wet, the temperature difference between the outside and inside of the room can lead to illness such as catching a cold. As a solution, some backpacks and other types of luggage are equipped with a nylon mesh sheet on the side that touches the back to prevent stuffiness. This is also available as an option. However, friction caused by the swaying of the backpack can damage your clothes, creating another problem.

[0012] To develop and provide a luggage support device that makes luggage feel lighter, is simple and safe, has a good usability, and is inexpensive. [Means for solving the problem]

[0013] In order to solve such problems, the backpack-type luggage support device of the present invention is a backpack-type luggage support device that comprises a rotating shaft portion that is installed horizontally near the bottom of the back of the person wearing the backpack-type luggage, and a flat lumbar support plate body with one side rotatably connected to the rotating shaft portion, and is characterized in that when the backpack-type luggage is worn, the lumbar support plate body rotates around the rotating shaft portion as an axis, and the other flat side is placed against the person's lumbar back, thereby lifting the lower back side of the backpack-type luggage from the person's back.

[0014] The backpack-type luggage support device of the present invention is also characterized in that the connecting portion between the rotating shaft and the lumbar support plate has a spring hinge structure on the rotating shaft, and the lumbar support plate has the force to constantly rotate toward the outer back or bottom surface of the backpack-type luggage and return to rest in contact. Furthermore, if the user falls and receives a strong impact, the spring hinge will be released or the lumbar support plate will come off the rotating shaft, avoiding danger or injury.

[0015] That is, in the backpack-type luggage support device according to the present invention, the elongated rotating shaft is fixed horizontally near the bottom of the carrying surface of a backpack-type luggage such as a school bag, and one side of the lumbar support plate is rotatably connected to the rotating shaft (see Figures 1 and 3). Therefore, when the backpack-type luggage is carried on the back, the lumbar support plate can be rotated so that the side opposite the rotating shaft is placed against the lower back of the person, thereby lifting the lower part of the backpack-type luggage away from the back.

[0016] This allows people to feel that the weight of the backpack is lighter. In addition, the back of the backpack is separated from the back, eliminating the heat and humidity caused by sweat on the back.

[0017] When the lumbar support plate is no longer placed against the person's lower back, it naturally rotates due to the rotational force of the spring hinge on the rotating shaft, returning to its original position until it makes surface contact with the back of the backpack-type luggage, at which point it enters a resting, unused state. If the direction of the rotational force of the spring hinge on the rotating shaft is opposite to that described above, the lumbar support plate will automatically rotate due to the opposite rotational force of the rotating shaft, returning to its original position until it makes surface contact with the bottom of the backpack-type luggage, at which point it enters a resting, unused state. In other words, the lumbar support plate does not get in the way at all when it is in a resting, unused state.

[0018] When the direction of the rotational force of the spring hinge of the rotating shaft rotates the lumbar support plate upward, the angle of the lumbar support plate from the center of rotation when it is placed against the waist is preferably 90 to 130 degrees from the back surface of the backpack-type luggage, and it is even more preferable if there is a stopper on the rotating shaft that stops the rotation of the lumbar support plate at that angle. Similarly, when the direction of the rotational force of the spring hinge of the rotating shaft rotates the lumbar support plate downward, the angle of the lumbar support plate from the center of rotation when it is placed against the waist is preferably 90 to 50 degrees from the back surface of the backpack-type luggage, and it is even more preferable if there is a stopper on the rotating shaft that stops the rotation of the lumbar support plate at that angle. Needless to say, this stopper and other safety-conscious features make the structure vulnerable to impacts and prevent the lumbar support plate from being released or dislodged.

[0019] The portion of the lumbar support plate that is placed against the person's lower back has a slightly curved structure, and if it is made of a flexible or cushioned material, it will be soft and easy to use when placed against the person's lower back. However, the present invention does not limit the material, size, thickness, shape, or number of the lumbar support plate.

[0020] The backpack-type luggage support device of the present invention is a backpack-type luggage support device comprising a rotating shaft portion installed horizontally near the bottom of the back of a person carrying the backpack-type luggage, a flat lumbar support plate body having one side rotatably connected to the rotating shaft portion, and a flat luggage stand having one side connected to the rotating shaft portion and fixed to the outer bottom surface of the backpack-type luggage, and when the backpack-type luggage is carried on the back, the lumbar support plate body rotates around the rotating shaft portion as an axis and the other flat side is placed against the person's lumbar region, thereby lifting the lower back of the backpack-type luggage from the person's back, and the luggage stand can also be configured to support the weight of the backpack-type luggage with its bottom surface.

[0021] Similarly, the connection between the rotating shaft and the lumbar support plate has a spring hinge structure on the rotating shaft, and is characterized in that the lumbar support plate has the force to constantly rotate toward the outer back or bottom surface of the backpack-type luggage and return to rest in contact.

[0022] For example, if the backpack-type luggage is a school bag for an elementary school student, the luggage rack may be flat and avoid the magnetic lock on the cover (also called a crown) at the bottom of the school bag or the shoulder strap connection area. However, the present invention does not limit the material, size, thickness, shape, or number of the luggage rack. Because the luggage rack can support the weight of the backpack-type luggage with its bottom surface, when using the backpack-type luggage support device of the present invention, the backpack-type luggage can be stably lifted off the back, making it easier to feel the weight of the luggage being lighter and eliminating heat and sweat from the back.

[0023] Furthermore, the backpack-type luggage support device according to the present invention includes a rotating shaft portion installed horizontally near the bottom of the back of a person carrying a backpack-type luggage, a flat lumbar support plate having one side rotatably connected to the rotating shaft portion, and two shoulder belt tension rods having one end rotatably connected to both ends of the rotating shaft portion, wherein when the backpack-type luggage is carried on the back, the lumbar support plate rotates about the rotating shaft portion and the other side of the flat plate is applied to the person's lumbar region, thereby lifting the lower back portion of the backpack-type luggage from the back. The shoulder belt tension rods can also be rotated about the rotating shaft portion and applied to the lower part of the shoulder belt of the backpack-type luggage near the lower part of the shoulder belt of the backpack-type luggage, thereby pushing the shoulder belt of the backpack-type luggage downward and forward toward the abdomen.

[0024] The connecting portion between the rotating shaft portion and the lumbar support plate-like body has a spring hinge structure on the rotating shaft portion, and the lumbar support plate-like body has the force to constantly rotate toward the external back side or external bottom side of the backpack-type luggage and return to contact and rest, and the shoulder belt tension rod-like body has a convex portion on one end opposite the connecting portion of the rotating shaft portion, and is inserted into a hole provided in the shoulder belt of the backpack-type luggage and tensioned and fixed.

[0025] Furthermore, the shoulder belt tension rod can have an extendable tamo rod structure. It goes without saying that if the shoulder belt tension rod has an extendable tamo rod structure, it is convenient because the length can be adjusted as desired.

[0026] In other words, the shoulder belt tension rods have two rods, one on each side, and one end of each rod is rotatably attached to both ends of the rotating shaft. When carrying a backpack-type load, each rod can be moved as desired and the other end can be placed near the bottom of the shoulder belt and fixed in place. This tensions the shoulder belt downward and forward. This action prevents the entire heavy backpack-type load from bending backward and away from the back.

[0027] The function and effect of this shoulder belt tension rod will be described in detail later in the explanation of Figs. 5 and 6, taking the case where the backpack-type baggage is a school bag as an example.

[0028] The backpack-type luggage support device of the present invention is a new luggage support device equipped with shoulder belt tension rods that can be rotated forward and pushed with both hands, located near both ends of the luggage rack or near both ends of the rotating shaft of the backpack-type luggage. The shoulder belt tension rods are placed along the shoulder belt and extend forward together with the shoulder belt, and the shoulder belt is fixed in place by the tension generated by pushing the shoulder belt tension rods downward. The shoulder belt tension rods are designed to strongly tension the shoulder belt forward while following the shoulder belt, but they have the characteristic of easily coming off when subjected to impact, thereby avoiding danger.

[0029] There are no limitations on the shape, material, size, thickness, etc. of the shoulder belt tension rod that exerts a tensioning force along the shoulder belt, but it goes without saying that it is preferable that it is flexible but stiff in the tensioning direction, so that it can avoid danger in the event of an impact, etc. It is also desirable that it is detachable and can be replaced according to preference or age, and that it is easy to use and has no limitations on the method of fastening.

[0030] However, the problem here is that if the width of the lumbar support plate is narrow or if the backpack-type luggage separates from the back, the backpack-type luggage will sway and become unstable, which can make the load feel even heavier.In order to hold the backpack-type luggage in a stable state, it is preferable that the width of the flat lumbar support plate that is pressed against the back matches the width of the backpack-type luggage and be designed to be able to hold it firmly even when it sways side to side.

[0031] It is also better to have a vertical space in the center to take into account the impact on the spine. The lumbar support plate is divided into two pieces with an arbitrary opening in the center to fit both ends of the backpack-type luggage, and since it is pressed against the waist area, it may be necessary for safety reasons to use a cushioning material to avoid pain. In terms of specifications, if the bottom of the backpack-type luggage is hard, the two lumbar support plates can be two separate pieces, but if the bottom of the backpack-type luggage is soft, it can be a single lumbar support plate cut with a space in the center to take strength into consideration.

[0032] The shoulders of the body, the luggage support base for carrying backpack-type luggage, and the waist support plate-like body connected to the luggage support base via a rotating shaft are spread and attached, and the tensioning force of the shoulder belt tension rod-like body is utilized, which inevitably creates a triangular space between the backpack-type luggage and the back, eliminating the tight contact with the back and, as a by-product of the present invention, eliminating the problem of sweaty backs.

[0033] The present invention features a system in which shoulder belt tension rods attached to both ends of the luggage rack are pushed forward and downward with both hands along the shoulder belt of the backpack-type luggage, compressing and securing the backpack-type luggage to the person's back. The luggage rack and lumbar support plate push the backpack-type luggage backward, or outward, separating the luggage rack from the back and moving the luggage away from the body. The backpack-type luggage is then supported by three fulcrums: the shoulders of the body, the luggage rack on which the backpack-type luggage is placed, and the body-contacting portion of the lumbar support plate connected to the luggage rack via a rotating shaft. This shifts the center of gravity of the backpack-type luggage toward the shoulders of the person, which are located higher. This creates a triangular space. However, because this space creates instability, the tension of the shoulder belt tension rods is used to bring the top of the backpack-type luggage into close contact with the shoulders of the body. As a result, the backpack-type luggage is secured, reducing the perceived weight of the luggage and providing a stable carrying structure.

[0034] The backpack-type luggage support device of the present invention is not limited in material, detailed shape, size, thickness, etc., of the luggage support base, rotating shaft, lumbar support plate, and shoulder belt tension rods, and the shoulder belt tension rods may be extendable. It goes without saying that all components require the area necessary to support the luggage and the strength necessary to ensure safety, and they are lightweight and have a structure that avoids danger. Furthermore, the backpack-type luggage support device of the present invention may also be a backpack-type luggage support device comprising a rotating shaft installed horizontally near the bottom of the person's back carrying the luggage, and two shoulder belt tension rods rotatably connected at one end to both ends of the rotating shaft, wherein the shoulder belt tension rods can be rotated about the rotating shaft and placed near the lower part of the shoulder belt of the backpack-type luggage, thereby pushing the shoulder belt of the backpack-type luggage downward and forward toward the person's abdomen.

[0035] Furthermore, since the lumbar support plate of the present invention is in surface pressure contact with the lumbar region, it is necessary for safety reasons that it be made of a cushioning material to avoid pain.

[0036] The backpack-type luggage support device of the present invention can take any equivalent form that incorporates prior art in addition to the above, and we claim that all of these are encompassed within the technical concept of the present invention. [Effects of the Invention]

[0037] The present invention is characterized by its ability to easily and comfortably transport luggage while carrying it on one's back. The backpack-type luggage support device of the present invention utilizes three fulcrums—the shoulders, the luggage support platform on which the backpack-type luggage is placed, and a lumbar support plate connected to the platform via a rotating shaft—to separate the backpack-type luggage from the back. This releases the tight fit of the luggage against the back, thereby solving the problem of uncomfortable stuffiness. However, this can also lead to concerns about stability, such as the luggage swaying. However, shoulder belt tension rods attached to the shoulder belts from both ends of the platform's rotating shaft tension the shoulder belt downward along the shoulder belt, thereby securing the luggage in place, eliminating this concern. In other words, the shoulder belt tension rods are attached to both ends of the rotating shaft of the luggage support platform on which the backpack-type luggage is placed. The shoulder belt tension rods extend forward along the shoulder belt and are pushed downward, generating tension that secures the shoulder belt, allowing the backpack-type luggage to be carried stably. (See Figures 5 and 6.)

[0038] For example, although the length of the shoulder straps on a school bag is adjusted by an adult to fit the child, the resulting movement of the school bag and the subtle fit are immeasurable, as they depend on the child's own sense. This invention is effective in cultivating respect for the active will and sense of the child from an early age, not just in terms of the color and shape of the school bag, but also from the above perspective.

[0039] Backpacks equipped with chest straps around the chest or waist have been commercialized. While effective in reducing perceived load, the straps feel oppressive when carrying thick clothing or coats, necessitating adjustment. Furthermore, they must be removed every time the bag is put down. In the case of a school bag, the chest strap is designed to release when subjected to impact, but this requires considerable force. The shoulder strap tension rods equipped on the backpack-type bag of the present invention are characterized by a mechanism that applies strong tension forward but easily releases the force to the sides, so they release when the shoulder straps are removed. Furthermore, handling is easy, as no laborious movements are required when putting down a backpack or carrying it in front of the user.

[0040] The present invention is a technical concept that moves the center of gravity upward using three fulcrums: the shoulders of the body, the load platform on which the backpack-type luggage is placed, and the lumbar support plate-like body connected to the load platform via a rotating shaft, thereby effortlessly reducing the perceived load and eliminating discomfort caused by sweating on the back. It can be used to support any type of luggage carried on the back, including school bags, and provides a backpack-type luggage support device that is easy to put on, safe and stable, provides a comfortable feel, and is inexpensive and economical. [Brief explanation of the drawings]

[0041] [Figure 1] 1 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to one embodiment of the present invention. [Figure 2] 1 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to one embodiment of the present invention. [Figure 3] 1 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to an embodiment of the present invention when attached to a school bag. FIG. [Figure 4] 1 is a perspective conceptual diagram showing an overall image of a shoulder belt tension rod-shaped member of a backpack-type luggage support device according to one embodiment of the present invention when attached to a school bag. FIG. [Figure 5] 1 is a perspective conceptual diagram showing an image of a backpack-type luggage support device according to an embodiment of the present invention, in which a lumbar support plate is attached to a school bag. FIG. [Figure 6] 1 is a perspective conceptual diagram showing an image of a shoulder belt tension rod-shaped member of a backpack-type luggage support device according to one embodiment of the present invention attached to a school bag. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0042] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. Note that the scope necessary for the explanation to achieve the object of the present invention will be schematically shown, and the scope necessary for the explanation of the relevant parts of the present invention will be mainly described, and the parts that are omitted from the explanation will be based on publicly known techniques.

[0043] 1 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to one embodiment of the present invention. As shown in the figure, the backpack-type luggage support device according to one embodiment of the present invention is composed of a rotating shaft 10, a lumbar support plate 11, shoulder belt tension rods 12, and a luggage support base 14. However, the device may be composed of only the rotating shaft 10 and lumbar support plate 11, or only the rotating shaft 10, lumbar support plate 11, and shoulder belt tension rods 12, or only the rotating shaft 10 and shoulder belt tension rods 12.

[0044] The lumbar support plate 11 rotates as shown by the arrow 16 around a rotating shaft 10 installed at the bottom of the back of the backpack-type luggage, and one curved side of the lumbar support plate 11, for example as shown in Figure 1, is placed against the lower back of a person, thereby lifting the backpack-type luggage from the person's back.

[0045] The load platform 14 is installed on the exterior bottom surface of the backpack-type luggage, and can support the weight of the backpack-type luggage in a balanced manner across the entire surface. The shoulder belt tension rod 12 rotates, for example, as shown by arrow 17, around shoulder belt tension rod support portions 15 at both ends of the rotating shaft 10 as its axis, and when its tip is placed near the lower part of the shoulder belt 3 of the backpack-type luggage, it tensions and pushes the shoulder belt 3 downward and forward around the person's waist. This pulls the shoulder belt 3, and at the same time, the upper part of the luggage on the back is closely fitted to the upper part of the back near the shoulders. This action makes the backpack-type luggage feel lighter and keeps the person's back cooler.

[0046] FIG. 2 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to one embodiment of the present invention. As shown in the figure, when the backpack-type luggage support device according to one embodiment of the present invention is not in use, the lumbar support plate 11 automatically rotates by spring force as indicated by arrow 16 around the rotation axis 10 using a spring hinge, and becomes stationary. If the spring force of the spring hinge acts upward as shown in FIG. 2, the lumbar support plate 11 will come into rest and settle against the back side of the backpack-type luggage, as shown in FIG. 2. If the spring force of the spring hinge of the rotation axis acts downward, the lumbar support plate 11 will come into rest and settle against the bottom of the luggage stand 14 or the outer bottom surface of the backpack-type luggage. This stationary, settled state is the backpack-type luggage support device according to one embodiment of the present invention when not in use.

[0047] When using the backpack-type luggage support device according to one embodiment of the present invention, if the spring force of the spring hinges acts to rotate the lumbar support plate 11 upward as shown in Figure 2, the lumbar support plate 11 is most effectively supported when placed against the person's lumbar region at an angle of 90 to 130 degrees from the back surface of the backpack-type luggage. It is also preferable that the rotating shaft 10 has a stopper that fixes the lumbar support plate 11 at that angle. Similarly, if the spring force of the spring hinges of the rotating shaft 10 rotates the lumbar support plate 11 downward, it is most effectively supported against the person's lumbar region when the lumbar support plate 11 is placed against the person's lumbar region at an angle of 50 to 90 degrees from the back surface of the backpack-type luggage. It is also preferable that the rotating shaft 10 has a stopper that fixes the lumbar support plate 11 at that angle. In addition, it goes without saying that the spring hinges of the fixed rotating shaft portion 10 and the lumbar support plate-like body 11 are of an easily destructible structure to avoid the risk of injury due to falls or pressure from impacts.

[0048] FIG. 3 is a perspective conceptual diagram showing an overall image of a backpack-type luggage support device according to one embodiment of the present invention when attached to a school bag 2. Needless to say, the school bag 2 is an example of backpack-type luggage. As shown in the figure, the lumbar support plate 11 of the backpack-type luggage support device according to one embodiment of the present invention rotates as indicated by arrow 16 and is placed against the child's waist at an angle of 90 to 130 degrees from the back of the school bag 2. This causes the back of the school bag 2 to be slightly raised from the child's back, eliminating heat and sweat buildup and making the school bag 2 appear lighter in weight.

[0049] Figure 4 is a perspective conceptual diagram showing an overall image of shoulder belt tension rods 12 of a backpack-type luggage support device according to one embodiment of the present invention when attached to a school bag 2. As shown in the figure, the tip of the shoulder belt tension rod 12 is placed near the lower part of the shoulder belts 3 of the school bag 2, and acts to tension and push the shoulder belts 3 forward. As a result, the upper part of the school bag 2, pulled by the shoulder belt tension rods 12, is brought into close contact with the upper part of the child's back near the shoulders. The child feels that the school bag 2 has become lighter.

[0050] As shown in Figure 4, the tip of the shoulder belt tension rod 12 has, for example, a protrusion 13, and if there are multiple holes near the bottom of the shoulder belt 3 of the school bag 2, simply by inserting the tip protrusion 13 of the shoulder belt tension rod 12 into the holes near the bottom of the shoulder belt 3, the shoulder belt tension rod 12 of the shoulder belt 3 can be easily tensioned and pushed forward.

[0051] Fig. 5 is a perspective conceptual diagram showing an image of a backpack-type luggage support device according to one embodiment of the present invention when a lumbar support plate 11 is attached to a school bag 2. Fig. 6 is a perspective conceptual diagram showing an image of a backpack-type luggage support device according to one embodiment of the present invention when a shoulder belt tension rod 12 is attached to a school bag 2. The effect of the shoulder belt tension rod 12 when a child carries the school bag 2 on their back will be explained using Figs. 5 and 6.

[0052] As shown in Figure 5, when a child is carrying a very heavy school bag 2 and places the lumbar support plate 11 of the backpack-type luggage support device according to one embodiment of the present invention on their waist, the school bag 2 will drop downward as indicated by the weight arrow 4, and at the same time, the school bag 2 will move away from the child's back, creating a gap with the back as indicated by the arrow 5. In other words, the heavy weight of the school bag 2 will cause the child to lean backward, and the shoulder straps 3 of the school bag 2 will be pulled away from the shoulders and towards the back. The child will feel pain from the weight of the school bag, and it may even become unstable and dangerous.

[0053] Therefore, as shown in Figure 6, the tip of the shoulder belt tension rod 12 is placed and fixed to the bottom of the shoulder belt 3 of the school bag 2. By tensioning the shoulder belt tension rod 12, the force of arrow 6 acts to push down the shoulder belt 3, pulling the upper shoulder part of the shoulder belt, and the top of the school bag 2 is pushed back against the child's shoulder and back, making it fit snugly. This prevents the child from leaning backward and relieves the child from the discomfort caused by the weight of the school bag. It also prevents danger.

[0054] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. All of these modifications are part of the present technical concept. [Industrial Applicability]

[0055] As described above, the present invention is a simple luggage support device attached to backpack-type luggage, but since there are individual differences in sensory aspects such as luggage weight, seasonal temperature, and feel of use, the degree of support can be adjusted at the user's discretion, reducing stress caused by the weight and heat of backpack-type luggage. Therefore, just as shoulder straps are a given when carrying luggage on one's back, the backpack-type luggage support device of the present invention can become an item that is a given for backpack-type luggage.

[0056] Therefore, the present invention is not limited to businesses related to the materials, manufacturing, and sales of the product, but can be attached to any backpack-type luggage for commuting to school, work, private occasions, mountain climbing, sports, etc., providing a simple and comfortable luggage support device that will bring great benefits to society. [Explanation of symbols]

[0057] 1 Backpack-type luggage support 2. School bags (backpacks) 3. Shoulder straps of school bags 4 Weight Arrow 5 Gap arrow 6 Arrow indicating the force pushing down on the shoulder belt 10 Rotating shaft 11 Lumbar support plate 12 Shoulder belt tension rod 13 Convex part 14 Luggage rack 15 Shoulder belt tension rod receiving part 16 Rotating arrow on the waist support plate 17 Rotation arrow of shoulder belt tension rod

Claims

1. A rotating shaft portion is horizontally installed near the bottom of the back of the person carrying the backpack-type luggage; a flat-plate-shaped waist support plate-like body, one side of which is rotatably connected to the rotation shaft portion; A backpack-type luggage support device comprising: When the backpack-type luggage is carried on the back, the lumbar support plate-like body rotates about the rotation shaft portion, and the other side of the plate-like body is placed against the person's lumbar back, thereby lifting the lower back portion of the backpack-type luggage from the person's back. A backpack-type luggage support device characterized by the above.

2. The connecting portion between the rotating shaft portion and the lumbar support plate-like body has a spring hinge structure on the rotating shaft portion, and the lumbar support plate-like body has a force that constantly rotates to the outer rear side or the outer bottom side of the backpack-type luggage and returns to a resting position in contact therewith.

2. The backpack-type luggage support device according to claim 1, characterized in that:

3. A rotating shaft portion is horizontally installed near the bottom of the back of the person carrying the backpack-type luggage; a flat-plate-shaped waist support plate-like body, one side of which is rotatably connected to the rotation shaft portion; a flat-plate-shaped luggage platform having one side connected to the rotating shaft portion and fixed to the outer bottom surface of the backpack-type luggage; A backpack-type luggage support device comprising: When the backpack-type luggage is carried on the back, the lumbar support plate-like body rotates about the rotation shaft portion, and the other side of the flat plate is placed against the lumbar portion of the back of the person, thereby lifting the lower back portion of the backpack-type luggage from the back of the person, and the luggage support base supports the weight of the backpack-type luggage with its bottom surface. A backpack-type luggage support device characterized by the above.

4. The connecting portion between the rotating shaft portion and the lumbar support plate-like body has a spring hinge structure on the rotating shaft portion, and the lumbar support plate-like body has a force that constantly rotates to the outer rear side or the outer bottom side of the backpack-type luggage and returns to a resting position in contact therewith.

4. The backpack-type luggage support device according to claim 3, characterized in that:

5. A rotating shaft portion is horizontally installed near the bottom of the back of the person carrying the backpack-type luggage; a flat-plate-shaped waist support plate-like body, one side of which is rotatably connected to the rotation shaft portion; Two shoulder belt tension rods each having one end rotatably connected to both ends of the rotary shaft; A backpack-type luggage support device comprising: When the backpack-type luggage is carried on the back, the lumbar support plate-like body rotates about the rotation shaft portion, and the other side of the flat plate is placed against the person's lumbar back, thereby lifting the lower back portion of the backpack-type luggage from the person's back, The shoulder belt tension rod-shaped body can be rotated around the rotation shaft portion and the other end can be attached to the vicinity of the lower part of the shoulder belt of the backpack-type luggage, thereby pushing down the shoulder belt of the backpack-type luggage in a forward downward direction toward the abdomen of the person. A backpack-type luggage support device characterized by the above.

6. The connecting portion between the rotating shaft portion and the lumbar support plate-like body has a spring hinge structure on the rotating shaft portion, and the lumbar support plate-like body has a force that constantly rotates to the outer rear side or the outer bottom side of the backpack-type luggage and returns to a resting position in contact therewith. and the shoulder belt tension rod has a protrusion at one end opposite to the connecting portion of the rotating shaft, and is inserted into a hole provided in the shoulder belt of the backpack-type luggage and tensioned and fixed thereto; 6. The backpack-type luggage support device according to claim 5, characterized in that:

7. The shoulder belt tension rod has an extendable landing gear rod structure.

7. The backpack-type luggage support device according to claim 6, characterized in that:

8. A rotating shaft portion is horizontally installed near the bottom of the back of the person carrying the backpack-type luggage; Two shoulder belt tension rods each having one end rotatably connected to both ends of the rotary shaft; A backpack-type luggage support device comprising: The shoulder belt tension rod-shaped body can be rotated around the rotation shaft portion and the other end can be attached to the vicinity of the lower part of the shoulder belt of the backpack-type luggage, thereby pushing down the shoulder belt of the backpack-type luggage in a forward downward direction toward the abdomen of the person. A backpack-type luggage support device characterized by the above.

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