A back support system that utilizes the deltoid muscle

Abstract

By changing the traditional carrying method and backpack straps, the deltoid muscles of the shoulders are used as the load-bearing points of the backpack. Through the combination of shoulder pads (1), shoulder pad air cushions (2), three-way backpack straps (3) and other accessories, the vertical load-bearing mode of the trapezius muscles of the shoulders is changed to the three-way load-bearing mode of the deltoid muscles of the arms. Three key innovative technologies are used to avoid the trapezius muscles, which are prone to fatigue when under load, and to transfer the weight of the backpack to the deltoid muscles of the shoulders, forming a three-way load distribution carrying system on the shoulders and chest. This makes the trapezius muscles of the shoulders no longer feel sore when carrying heavy objects, allowing us to carry heavy items for a long time. When carrying more items and outdoor equipment such as tents during outdoor rescue, field research, hiking, etc., it feels easier, the carrying time is longer, and more items can be carried.

Description

Technical Field

[0001] This utility model relates to a carrying system. Specifically, it's a completely new carrying method that changes the traditional vertical force distribution on the upper trapezius muscle to a three-sided force distribution on the deltoid muscles of both shoulders through a new design. This better alleviates the pressure sensation when carrying items and avoids the fatigue and soreness that easily occurs in the trapezius muscles after a certain period of stress, allowing for the carrying of heavier items and for longer periods of time. Background Technology

[0002] Since the world's first external frame backpack pioneered modern backpack design, most carrying methods have used similar designs. Heavy backpacks, such as mountaineering backpacks, often employ internal frames, significantly improving both carrying comfort and load-bearing capacity. The human back is not flat but has a certain curvature, with many people having a pronounced curve in the waist and hip area. If a backpack can be stably fixed around the waist and hips, the weight is transferred to this area, making it relatively easier for the wearer. The main purpose of modern backpack carrying systems is to reasonably stabilize the weight-bearing capacity of the lower back and alleviate the vertical weight on the shoulders, thereby increasing the wearer's carrying time and load capacity.

[0003] This design is mainly reflected in four aspects. First, the backpack's back waist and hip area conforms to the curves of the human body; thick lumbar and hip pads are added in this area, and by tightening the straps, the center of gravity of the bag bottom is brought closer to the waist and hips, reducing the downward shift of the center of gravity. Second, the waist belt is thickened and widened with a reasonable curvature, better securing the backpack and distributing the load. The load is distributed to the large waist belt, while sufficient friction also prevents the bag from sagging. Third, there is robust back support. Without internal support, the bag will deform in various ways during activities, causing the center of gravity to shift downwards, which is not only uncomfortable, but also results in sharp-edged heavy objects inside the bag digging into the back. Internal support is achieved through a large-area, one-piece rigid back panel. This effectively supports the backpack and prevents it from deforming, making carrying more comfortable. Fourth, there is a reasonable design for the backpack's shoulder straps. The shoulder straps are the main load-bearing structure of the backpack. When the load is too heavy, the shoulder straps need to bear more of the load, which puts a lot of stress on them. Therefore, the shoulder straps of modern carrying systems are designed with sufficient thickness and filled with high-resilience padding. Even when bearing a large weight, the thick shoulder straps will not deform significantly on both sides, ensuring sufficient contact area for bearing weight and making the carrying experience more comfortable.

[0004] The development history of carrying systems has gone through several stages: from the earliest carrying support devices such as U-shaped tubes and double aluminum strips, to the later "∏"-shaped aluminum plates with template support, and then to the invention of "TCS (Tube Frame Carrying System)" by the German company BigPack in 1997. Now, backpacks basically adopt the carrying structure of internal frame. The carrying system usually consists of a frame, shoulder straps, waist belt, load-bearing belt, chest strap, as well as padding and backpack pouch.

[0005] For modern backpacks, the most important component is the carrying system, which connects the backpack to the user's back. Its main functions are twofold: first, to distribute weight evenly across the body, avoiding concentration on the shoulders for a more comfortable carrying experience; and second, to provide center of gravity adjustment, ensuring balance during walking. Regardless of the design, the carrying method for existing backpack systems is largely the same: the trapezius muscles on both shoulders bear the weight of the backpack straps. Therefore, the heavier the load, the greater the load on the trapezius muscles. Observing human muscle structure, we know that the trapezius muscles are relatively prone to fatigue. Prolonged sitting and lack of exercise can cause trapezius muscle soreness, and prolonged weight-bearing will inevitably lead to trapezius muscle fatigue and even damage. Frequent shoulder soreness is a sign of trapezius muscle fatigue. The trapezius muscle connects to the head and lower back, with the upper trapezius reaching the occipital bone at the back of the head. Its nerve distribution is dense, so trapezius muscle strain commonly manifests as severe symptoms such as neck muscle pain, dizziness, weakness in the limbs, and decreased balance. Milder symptoms include dizziness while walking, unsteady gait, shoulder, back, and lower back pain, lethargy, and easy fatigue. Therefore, when carrying heavy objects for extended periods, we experience discomfort in the back of the head and neck, shortness of breath, and a significant decrease in endurance after walking for a while. The trapezius muscles in the shoulders feel extremely heavy – problems that existing carrying systems cannot solve. This invention, through a completely new design, changes the existing carrying method, avoiding these drawbacks to some extent and making carrying easier and more comfortable. Summary of the Invention

[0006] 1. Technical problem to be solved by this utility model

[0007] To avoid the downward vertical pressure of the weight of the item on the trapezius muscles on both sides of the shoulders and the muscles and surrounding nerves during long-term carrying, thus avoiding muscle soreness, pain and fatigue, the carrier can better maintain physical strength and endurance during the carrying process.

[0008] 2. The complete technical solution provided by this utility model

[0009] This invention represents a revolutionary advancement in existing carrying technology, transforming the traditional carrying method. Building upon the existing (internal frame carrying system), it changes the vertical force distribution on the trapezius muscles of the shoulders to a three-dimensional force distribution on the deltoid muscles of the arms. Using three innovative technologies, the weight of the backpack is stretched downwards and inwards in the deltoid muscles of the arms, resulting in a more compact, easier, and more durable carrying experience.

[0010] 2.1 Hard Plastic Shoulder Pads: (Composed of "Shoulder Pads (1)" and "Shoulder Pad Air Cushions (2)") As one of the three key technical aspects of this invention, the "Shoulder Pads (1)" in the hard plastic shoulder pads adopts modern plastic processing technology and is ergonomically designed to fit the deltoid muscles of the arm. The required hardness standard ensures that when the "three-way backpack straps (3)" and "backpack bag tightening adjustment straps (4)" are tightened according to the individual's carrying of items, the shoulder pads will not deform or break due to the tightening force. This ensures that the pressure from the backpack straps is distributed and borne by the entire shoulder pad, and avoids the situation where traditional backpack straps directly dig into the muscles, causing various marks and abrasions. The hard plastic shoulder pads have an inner layer of "Shoulder Pad Air Cushions (2)" sewn inside the "Shoulder Pads (1)". The "Shoulder Pad Air Cushions (2)" with a certain elasticity further buffers the weight distributed on the "Shoulder Pads (1)". This greatly increases the comfort when carrying items.

[0011] 2.2 Three-way backpack strap (3): After using the design of three-sided force on the deltoid muscle, the traditional load-bearing backpack strap is redesigned into a load-bearing backpack strap with three-way force on two sides. The traditional backpack strap is changed from pulling upward and applying downward force to tightening downward, inward and upward in three directions. In order to better complete the change of force direction, the upper part of the new "three-way backpack strap (3)" is designed as a wider "Y" shape so that more weight is distributed in the triangular area where the shoulder pad is located; it is fixed together with the shoulder pad by Velcro and buckle, so that the force of the backpack strap is applied to the shoulder pad, while avoiding backpack shaking; together with the "vest-style front chest air cushion (5)" and "front chest multi-row tightening adjustment strap (6)", it can fix the carrying items in the carrying position well, forming a double lateral force in front of the chest, partially changing the vertical carrying weight, making the carrying comfort better; and the load endurance is longer.

[0012] 2.3. Front Chest Support System: (composed of "Vest-style Front Chest Air Cushion (5)" and "Multi-row Adjustable Front Chest Straps (6)"). Compared to traditional carrying systems, this invention focuses on adjusting the distribution of the shoulder straps on the chest. The vest-style distribution design allows for greater distribution of the shoulder straps on the chest, while a softer air cushion is sewn into the inner layer to protect the chest and enhance breathability. The multi-row adjustable chest straps provide multiple layers of support, making the shoulder straps feel like a tactical vest on the chest. At the same time, the multiple layers of chest straps tighten and lift, causing the deltoid muscles to be stretched inward, reducing downward vertical pressure. The overall design is like an elastic vest, making it more comfortable to wear.

[0013] Through the above three important technological innovations, coupled with modern carrying technology, this utility model can be combined with most backpacks, changing the traditional carrying method and meeting the needs of more carrying environments.

[0014] 3. Beneficial effects of this utility model

[0015] The biggest advantage of the "three-sided deltoid muscle bearing" carrying method is that it avoids the trapezius muscle, which is prone to fatigue. The design shifts the weight of the load to the deltoid muscle area, and the overall new carrying method creates a three-way force distribution on the shoulders and chest. This means that when carrying heavy objects, the trapezius muscles in the shoulders are no longer under pressure, and the weight is transferred to the deltoid muscles, which are more resilient and less prone to fatigue. This allows for longer periods of carrying heavier items. The "Y"-shaped three-way backpack straps and the vest-style chest tightening design ensure a closer fit (similar to a tactical vest), preventing any particular muscle group from experiencing excessive pressure or marks. The tightening adjustment straps pull more weight inward, while avoiding the discomfort of traditional backpack straps digging into the armpit muscles. Overall, the experience is more comfortable and easier, allowing for heavier loads and longer carrying times.

[0016] The biggest innovation of this patent application is the complete transformation of the traditional force-bearing and carrying methods. This innovation is entirely feasible from a design perspective, and this creative design is highly practical, better serving outdoor workers and those in special operations who need to carry heavy loads for extended periods. The inventors believe this new carrying method will bring tremendous convenience to daily life and benefit societal needs. For activities such as outdoor rescue, field research, and hiking, where carrying heavy loads and outdoor equipment like tents is required, it will make carrying easier, allow for longer carrying times, and enable the transport of more items. Attached Figure Description

[0017] Figure 1 This image is a structural rendering of the utility model "deltoid muscle bearing support system".

[0018] Figure 2 This figure is a front view of the utility model "deltoid muscle bearing support system".

[0019] Figure 3 This image shows a key feature of the utility model "deltoid muscle bearing support system," detailing the new bearing strap.

[0020] Figure 4 This figure shows the actual application structure of the utility model "deltoid muscle bearing support system".

[0021] The following items are shown in the image: 1. Shoulder pads; 2. Shoulder pad air cushions; 3. Three-way backpack straps; 4. Backpack pouch tightening and adjustment straps; 5. Vest-style front chest air cushion; 6. Multi-row front chest tightening and adjustment straps; 7. Internal support frame; 8. Waist and hip pads; 9. Waist pack; 10. Waist tightening belt; 11. Backpack pouch. Detailed Implementation

[0022] exist Figure 1 In the middle, the shoulder pad (1) is sewn into the shoulder pad air cushion (2) to form a whole rigid plastic shoulder pad (similar to sports protective gear). This allows the entire shoulder pad to fit closely to the deltoid muscles on both sides of the human body. It is connected to the three-way backpack strap (3) and the backpack pouch tightening adjustment strap (4) through Velcro and buckles, so that the force from the backpack strap is distributed by the shoulder pad, and it is no longer the way the backpack strap directly squeezes the muscles. Among them, the backpack pouch tightening adjustment strap (4) is sewn on the three-way backpack strap (3). Its function is to connect with the backpack pouch through buckles when the backpack is too heavy or too high (e.g. Figure 4 Tightening prevents the backpack from tipping over or falling backward. The vest-style front chest air cushion (5) and the front chest multi-row tightening adjustment strap (6) are both components of the "vest-style" backpack strap, which are sewn onto the three-way backpack strap (3) as a whole. The vest-style front chest air cushion (5) is sewn inside the three-way backpack strap (3) and can relieve the pressure generated when the front chest multi-row tightening adjustment strap (6) is tightened, while increasing breathability. It has the same purpose as modern widened and thickened backpack straps, but the difference is that it changes the point of force on the human body when carrying it. Using a new carrying method, when carrying it, the tightening of the "front chest multi-row tightening adjustment strap (6)" can make the three-way backpack strap (3) fit the body more closely. It makes carrying it more comfortable. The above structure and the "inner support (7), waist and hip pad (8), waist pack (9), waist tightening strap (10)" are sewn together to form an integrated carrying frame structure. (Among them, the internal support (7), waist and hip pad (8), waist pack (9), and waist tightening strap (10) are all commonly used structures in modern heavy-duty backpacks, especially large backpacks for mountaineering and hiking, which are essential structures. Their function is to alleviate the friction caused by the excessive weight of the backpack to the human body and to fix the waist.) Thus, the maximum balance is achieved, realizing the effect requirements of this utility model invention. In summary, this patent application is structurally innovative and fully feasible.

[0023] exist Figure 2 The diagram clearly illustrates the style and layout of the invention. The various components are balanced from left to right. By slightly adjusting this carrying structure and sewing it onto any existing backpack or bag, more market applications of this invention can be realized.

[0024] exist Figure 3 The text focuses on describing the application of the core technology of the deltoid muscle three-sided force carrying system, which consists of shoulder pads (1), shoulder pad air cushions (2), three-way backpack straps (3), backpack bag tightening and adjustment straps (4), vest-style front chest air cushions (5), and front chest multi-row tightening and adjustment straps (6).

[0025] exist Figure 4In the middle, the carrying system is sewn together with the backpack pouch to form a high-load backpack. The inner frame (7), waist and hip pad (8) and backpack pouch are sewn together to form a whole backpack. The waist and hip pad (8) located at the waist can effectively fix the waist's stress. When the backpack is too heavy or too high, the backpack pouch tightening adjustment strap (4) sewn on the three-way backpack strap (3) is connected to the backpack pouch (11) through buckles (as shown in the attached document). Figure 4 Tightening can prevent backpacks and bags from tipping over or falling backward.

Claims

1. A deltoid muscle-supporting carrying system, comprising shoulder pads, shoulder pad air cushions, three-way backpack straps, backpack pouch tightening and adjusting straps, vest-style front chest air cushion, front chest multi-row tightening and adjusting straps, internal support, waist and hip pads, waist pack, and waist tightening belt; characterized in that The shoulder pad is sewn inside the shoulder pad, which is attached to the three-way backpack strap. The backpack pouch tightening adjustment strap, vest-style front chest pad, multi-row tightening adjustment strap, inner frame, waist and hip pad, and waist pack are sewn onto the three-way backpack strap, forming a carrying system that passes through the deltoid muscle after sewing.

2. A deltoid resisted carrying system as claimed in claim 1 wherein The three-way backpack straps, vest-style chest air cushion, and multi-row tightening adjustment straps on the chest are sewn together to form a carrying system that uses the deltoid muscles for support.

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