Lightweight backpack frame

Abstract

The utility model discloses a lightweight backpack frame belonging to the technical field of backpacks, which comprises a back frame plate body made of carbon fiber materials, the back frame plate body is integrally connected with a thoracic vertebra convex part, a lumbar vertebra concave part, a sacral vertebra micro-convex part and a caudal vertebra supporting part from top to bottom to form an S-shaped structure fitting ergonomics, first bent reinforcing ribs are arranged on the two sides of the thoracic vertebra outwards-protruding part, inwards-concave arc-shaped connecting positions are arranged on the two sides of the lumbar vertebra inwards-concave part, second bent reinforcing ribs are arranged on the two sides of the sacral vertebra slightly-protruding part, and an arc-shaped upwarp is arranged at the bottom of the caudal vertebra supporting part. According to the back frame plate, the back frame plate body of the S-shaped structure is designed based on ergonomics, and various designed pultrusion holes and reinforcing ribs are matched, so that the whole back frame plate body is more attached to the back and protects the spine when being used for a backpack, the back frame plate body is made of carbon fiber materials, the back frame plate body is lighter and more comfortable, and the experience effect of using the backpack is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of backpacks and relates to a lightweight backpack frame. Background Art

[0002] With the continuous development of the times and the ever-changing social conditions, people's requirements for backpacks are no longer limited to carrying items, and the requirements for backpacks themselves are also constantly improving. Backpacks are a common type of bag used in various occasions, especially when traveling or exploring the outdoors. Backpacks are one of the essential equipment. They can be used to store travel and outdoor equipment for easy carrying. It is common to see backpacks as part of the carrying material, which can carry spare water, dry food, medicine bottles, bedding and other items. Among them, the back frame of the backpack is the key to carrying weight.

[0003] The ordinary backpack frames used in existing backpacks are made of lighter aluminum alloy materials or other engineering plastics as the skeleton, and are equipped with auxiliary materials such as cloth, locks, straps, and carrying bags. The backpack itself is not light in weight. When the user's own supplies are added, the overall weight is not friendly to outdoor backpacking. In addition, the aluminum alloy material is too hard and will cause scratches on the user's back. The engineering plastic will deform and squeeze the backpack after carrying too much heavy supplies. The existing backpack frames are not designed based on ergonomic principles, and no lighter and more comfortable backpack frames are used for backpack use, which affects the backpack usage experience. Utility Model Content

[0004] The utility model provides a lightweight backpack frame, which aims to solve the problem that the existing backpack frames are not designed based on ergonomic principles, and no lighter and more comfortable backpack frames are adopted for the use of backpacks, which affects the experience of backpack use.

[0005] To achieve the above-mentioned purpose, the utility model provides a lightweight backpack frame, including a back frame plate body made of carbon fiber material, wherein the back frame plate body is integrally connected from top to bottom to form an outer convex portion of the thoracic vertebra, an inner concave portion of the lumbar vertebra, a slightly convex portion of the sacral vertebra and a coccyx support portion to form an ergonomic S-shaped structure, the two sides of the outer convex portion of the thoracic vertebra are provided with a first bent reinforcement rib, the two sides of the inner concave portion of the lumbar vertebra are concave arc-shaped connecting parts, the two sides of the slightly convex portion of the sacral vertebra are provided with a second bent reinforcement rib, and the bottom of the coccyx support portion is provided with an arc-shaped protrusion.

[0006] Preferably, a plurality of first transverse extruded strip holes are provided in the middle of the outer protrusion of the thoracic vertebra, a circular arrangement of holes is provided on the lower side of the first transverse extruded strip holes, and a plurality of first double hole positions for binding straps are provided on both sides and the top side of the outer protrusion of the thoracic vertebra, and a first single hole position is provided on one side of the first double hole position.

[0007] Preferably, a second transverse extruded strip hole is provided in the middle of the sacral micro-convex portion, a plurality of second vertical extruded square holes are provided on the upper side of the second transverse extruded strip hole, a plurality of second double hole positions for binding straps are provided on both sides of the sacral micro-convex portion, and a second single hole position is provided on one side of the second double hole position.

[0008] Preferably, a circular extrusion hole is provided in the middle of the inner concave portion of the lumbar vertebra, and a plurality of third single hole positions are provided along the inner concave arc connecting position of the inner concave portion of the lumbar vertebra.

[0009] Preferably, a plurality of fourth single hole positions are provided on the coccyx supporting portion.

[0010] Preferably, the back frame plate body includes a prepreg layer and a double fabric layer symmetrically arranged from the inside to the outside, the prepreg layer adopts T700 unidirectional carbon fiber prepreg, and the double fabric layer includes 2 layers of 12k plain carbon fiber fabric prepreg and 3K plain carbon fiber fabric prepreg arranged on the outside of the 12k plain carbon fiber fabric prepreg.

[0011] The beneficial effects of the utility model compared to the prior art are:

[0012] The utility model provides a lightweight backpack frame, which has an S-shaped structure of the back frame plate body based on ergonomic design, and the cooperation of various extruded holes and reinforcing ribs makes the entire back frame plate body fit the back better and protect the spine when used for backpacking. The back frame plate body is made of carbon fiber material, which is lighter and more comfortable, and the experience of using the backpack is better.

[0013] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0016] Figure 3 for Figure 2 A side structural diagram of

[0017] Figure 4 Schematic diagram of the layered structure of the utility model;

[0018] Reference numerals:

[0019] 1. Back frame body; 2. Outer convex part of thoracic vertebrae; 3. Inner concave part of lumbar vertebrae; 4. Slightly convex part of sacral vertebrae; 5. Coccyx support part; 6. First bending reinforcement rib; 7. Second bending reinforcement rib; 8. Inner concave arc connecting position; 9. First transverse extruded strip hole; 10. Circular arrangement of holes; 11. First double hole position; 12. First single hole position; 13. Second transverse extruded strip hole; 14. Second vertical extruded square hole; 15. Second double hole position; 16. Second single hole position; 17. Circular extruded hole; 18. Third single hole position; 19. Fourth single hole position; 20. Arc-shaped warping; 21. Prepreg layer; 22. Double fabric layer. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] To achieve the above objectives, the present invention provides a lightweight backpack frame. Figure 1-3 As shown, the back frame plate body 1 includes a carbon fiber material, and the back frame plate body 1 is integrally connected from the top to form a thoracic vertebrae convex portion 2, a lumbar vertebrae concave portion 3, a sacral vertebrae micro-convex portion 4 and a coccyx support portion 5 to form an ergonomic S-shaped structure. The thoracic vertebrae convex portion 2 is provided with a first bending reinforcement rib 6 on both sides, the lumbar vertebrae concave portion 3 is provided with an inward concave arc connection position 8 on both sides, the sacral vertebrae micro-convex portion 4 is provided with a second bending reinforcement rib 7 on both sides, and the bottom of the coccyx support portion 5 is provided with an arc-shaped tilt 20.

[0023] Among them, a plurality of first transverse extruded strip holes 9 are provided in the middle of the thoracic vertebrae protrusion 2, a circular arrangement of holes 10 is provided on the lower side of the first transverse extruded strip holes 9, and a plurality of first double hole positions 11 for binding straps are provided on both sides and the top side of the thoracic vertebrae protrusion 2, and a first single hole position 12 is provided on one side of the first double hole position 11.

[0024] Among them, a second transverse extruded strip hole 13 is provided in the middle of the sacral micro-convex part 4, and a plurality of second vertical extruded square holes 14 are provided on the upper side of the second transverse extruded strip hole 13. A plurality of second double hole positions 15 for binding straps are provided on both sides of the sacral micro-convex part 4, and a second single hole position 16 is provided on one side of the second double hole position 15.

[0025] A circular extrusion hole 17 is provided in the middle of the lumbar concave portion 3 , and a plurality of third single hole positions 18 are provided along the concave arc-shaped connecting position 8 of the lumbar concave portion 3 .

[0026] Wherein, a plurality of fourth single hole positions 19 are provided on the coccyx supporting portion 5 .

[0027] Ergonomic spinal structure: From top to bottom, the spinal column is composed of seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, five sacral vertebrae, and four coccygeal vertebrae, forming an S-shaped spine. This numerous vertebrae, connected by strong ligaments and intervertebral joints, maintains considerable spinal stability and mobility. Although each vertebra has a limited range of motion, the range is greatly increased when all vertebrae move together. Based on this, this embodiment improves the design of the backpack frame body 1 to create a lighter and more practical backpack. Carbon fiber material is used as the base material, and the S-shaped structure of the backpack frame body 1 is designed according to ergonomic principles. Specifically, it is constructed by integrating a thoracic convex portion 2, a lumbar concave portion 3, a sacral slightly convex portion 4, and a coccygeal support portion 5.

[0028] For example, when using a backpack, the weight of the materials inside the backpack (spare water, dry food, medicine bottles, bedding, etc.) is pulled downward, and the backpack will be lifted up and pulled forward by the shoulders, driving the chest to bend inward, causing the thoracic vertebrae convex part 2 to convex outward. The first horizontal extrusion strip holes 9 and the circular arrangement holes 10 of the thoracic vertebrae convex part 2 are released in the horizontal and vertical extrusion, so that the entire thoracic vertebrae convex part 2 can better fit the ergonomic thoracic vertebrae part, which meets the use design of the backpack and protects the thoracic vertebrae part; then, the ergonomic lumbar vertebrae part will be concave, because the lumbar vertebrae is the entire spine. The vertebra is an important part that connects the upper and lower parts. When carrying a backpack, the spine is in a straight state, which makes the lumbar spine tend to protrude outwards when it is seriously injured. This tendency makes the lumbar concave part 3 fit the ergonomic lumbar part for protection. Finally, the ergonomic sacral micro-convex part 4 is an important part of the upward support of the lumbar part, so that the entire lumbar part and the thoracic part are combined to form a wider range of activities and methods. The sacral micro-convex part 4 also has the function of fitting and protection. Its second horizontal extrusion strip hole 13 and second vertical extrusion square hole 14 are released in both horizontal and vertical extrusion. Of course, the caudal vertebra support part 5 integrally connected to the sacral micro-convex part 4 is designed for the heavy object support and fabric wrapping requirements of the backpack. The back frame body 1 is wrapped inside the fabric, and the arc-shaped tilt 20 of the caudal vertebra support part 5 can assist in supporting heavy objects.

[0029] For further reference, Figure 4 As shown, the back frame plate body 1 includes a prepreg layer 21 and a double fabric layer 22 symmetrically arranged from the inside to the outside, the prepreg layer 21 adopts T700 unidirectional carbon fiber prepreg, and the double fabric layer 22 includes two layers of 12k plain carbon fiber fabric prepreg and 3K plain carbon fiber fabric prepreg arranged on the outside of the 12k plain carbon fiber fabric prepreg.

[0030] In this embodiment, the back frame body 1 is manufactured as follows:

[0031] 1. According to the three-dimensional model of the back frame body 1, a set of hot pressing molds made of steel are made in advance. After the male and female molds are polished, the smooth surfaces of the male and female molds are coated with a release agent three times;

[0032] 2. According to the layup requirements, cut 8 sheets of prepreg for the carbon fiber back frame body 1, with a size of approximately 300×700mm, including 2 sheets of T700 unidirectional carbon fiber prepreg, 4 sheets of 12k plain carbon fiber fabric prepreg, and 2 sheets of 3K plain carbon fiber fabric prepreg;

[0033] 3. Lay the cut prepreg on the molding surface of the hot pressing mold in the order of laying. Pay attention to centering to avoid deviation. After laying, close the mold;

[0034] 4. Place the hot pressing mold into the molding machine, set the pressure to 2-4 MPa, the temperature to 130-160°C, and the molding time to 30-60 min. After the molding and curing are completed, cool it naturally to room temperature, take out the back frame plate body 1, grind and trim the burrs, and obtain the back frame plate body 1 product.

[0035] It has the following advantages:

[0036] Product appearance: ergonomic design, coupled with carbon fiber reinforced resin composite materials with good rigidity and toughness, can better fit the human body, good rigidity, can transfer part of the pressure on the shoulders to the lumbar sacral area;

[0037] Product material: Different from traditional aluminum alloy or engineering plastic materials, the product uses carbon fiber reinforced resin composite material. The product is lighter and thinner, greatly reducing the weight of the backpack frame, and has good mechanical properties and a long service life.

[0038] In summary, the utility model provides a lightweight backpack frame, which is an S-shaped structure back frame plate body 1 based on ergonomic design, and the cooperation of various extruded holes and reinforcing ribs makes the entire back frame plate body 1 fit the back better and protect the spine when used for backpacking. The back frame plate body 1 is made of carbon fiber material, which is lighter and more comfortable, and the experience of using a backpack is better.

[0039] The above description of the technical principles of the present invention in conjunction with specific embodiments is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention fall within the scope of protection of the present invention. Those skilled in the art can easily conceive of other specific embodiments of the present invention without inventive effort, and all of them fall within the scope of protection of the present invention.

Claims

1. A lightweight backpack rack, characterized in that: The back frame body comprises a carbon fiber material, wherein the back frame body is integrally connected from the top to form an outer convex portion of the thoracic vertebra, an inner concave portion of the lumbar vertebra, a slightly convex portion of the sacrum and a coccyx support portion to form an ergonomic S-shaped structure, first bending reinforcement ribs are provided on both sides of the outer convex portion of the thoracic vertebra, concave arc-shaped connecting portions are provided on both sides of the inner concave portion of the lumbar vertebra, second bending reinforcement ribs are provided on both sides of the slightly convex portion of the sacrum, and an arc-shaped protrusion is provided on the bottom of the coccyx support portion.

2. The lightweight backpack frame according to claim 1, characterized in that: A plurality of first transverse extruded strip holes are provided in the middle of the outer protrusion of the thoracic vertebra, and a circular arrangement of holes is provided on the lower side of the first transverse extruded strip holes. Both sides and the top side of the outer protrusion of the thoracic vertebra are provided with a plurality of first double hole positions for binding straps, and a first single hole position is provided on one side of the first double hole position.

3. The lightweight backpack frame according to claim 1, characterized in that: A second transverse extruded strip hole is provided in the middle of the sacral micro-convex part, and a plurality of second vertical extruded square holes are provided on the upper side of the second transverse extruded strip hole. A plurality of second double hole positions for binding straps are provided on both sides of the sacral micro-convex part, and a second single hole position is provided on one side of the second double hole position.

4. The lightweight backpack frame according to claim 1, characterized in that: A circular extrusion hole is provided in the middle of the inner concave portion of the lumbar vertebra, and a plurality of third single hole positions are provided along the inner concave arc connecting position of the inner concave portion of the lumbar vertebra.

5. The lightweight backpack frame according to claim 1, characterized in that: A plurality of fourth single hole positions are provided on the coccyx supporting portion.

6. The lightweight backpack frame according to any one of claims 1 to 5, characterized in that: The back frame plate body includes a prepreg layer and a double fabric layer symmetrically arranged from the inside to the outside, the prepreg layer adopts T700 unidirectional carbon fiber prepreg, and the double fabric layer includes two layers of 12k plain carbon fiber fabric prepreg and 3K plain carbon fiber fabric prepreg arranged on the outside of the 12k plain carbon fiber fabric prepreg.

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