CN215456083U

CN215456083U - Multifunctional expansion backpack

Info

Publication number: CN215456083U
Application number: CN202121300262.1U
Authority: CN
Inventors: 陈梓文; 孟宁宁; 陈茂平; 丁先锋; 范劲松
Original assignee: Anhui Korrun Co ltd
Current assignee: Anhui Korrun Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-11
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a multifunctional expansion backpack, which comprises a backpack body, backpack straps and an expansion folding assembly, wherein the backpack straps are arranged at the rear part of the backpack body; the expansion folding assembly is arranged at the front part of the bag body and comprises a first annular frame body, a second annular frame body, an expansion folding layer and an expansion zipper, wherein the first annular frame body is wrapped in the edge of the front part of the bag body; the second annular frame body is wrapped in the edge of the front part of the rear part of the bag body; the expansion folding layer is connected with the edge of the first annular frame body; the two sides of the expansion zipper are respectively connected with the expansion folding layer and the second annular frame body; when the bag body does not need to be expanded, the first annular frame body is directly partially or completely sleeved on the periphery of the second annular frame body, so that the expansion folding layer and the expansion zipper are closed in the first annular frame body and the second annular frame body; when the package body needs dilatation, directly draw the first annular framework that partly or totally intussusception was in second annular framework periphery to the direction of keeping away from second annular framework and drag for the dilatation folded layer fully expandes.

Description

Multifunctional expansion backpack

Technical Field

The utility model relates to the field of backpack, in particular to a multifunctional expansion backpack.

Background

Along with the rapid improvement of the living standard of people, people can need to use the backpack to carry some daily necessities when going out in daily life and when going out to travel in holidays so as to be convenient for use in going out or traveling. When the backpack needs to be used for placing articles with larger volume or a user needs to carry more articles during traveling, the backpack does not have enough space for wrapping; when the backpack is not needed to be placed with large-size articles or is used in daily trips, the backpack is too bulky due to large size, the appearance of the backpack is affected, and the requirement of users on pursuing fashionable consumption is not met.

At present, the expansion of the backpack in the market is mostly realized by using a zipper, but the expansion of the zipper is complex, the whole circle of zipper needs to be opened or closed, the fabric is easily clamped in the opening and closing process of the zipper, and the zipper is easily damaged after being used for a long time; moreover, the appearance of the backpack is greatly influenced by the expansion mode of the zipper, and the design lines of the whole backpack become complicated and are not concise and attractive enough by the additional zipper.

The scheme of the utility model is an improvement of the existing backpack aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a multifunctional expansion backpack, which solves the problems of complex opening and closing, inconvenience in use, and lack of conciseness and attractiveness of the existing backpack expansion structure.

In order to achieve the purpose of the utility model, the technical scheme adopted for solving the technical problem is as follows:

the utility model provides a multi-functional dilatation shoulders bag, includes package body, shoulders braces and dilatation folding assembly, wherein:

the double-shoulder straps are arranged at the rear part of the bag body;

the dilatation folding assembly set up in package body front portion, including first annular frame body, second annular frame body, dilatation folding layer and dilatation zip fastener, wherein:

the first annular frame body is wrapped in the edge of the front part of the bag body;

the second annular frame body is wrapped in the edge of the rear part of the bag body facing the front part;

the expansion folding layer is connected with the edge of the first annular frame body;

the two sides of the expansion zipper are respectively connected with the expansion folding layer and the second annular frame body;

when the bag body does not need to be expanded, the first annular frame body is directly partially or completely sleeved on the periphery of the second annular frame body, so that the expansion folding layer and the expansion zipper are closed in the first annular frame body and the second annular frame body;

when the bag body needs to be expanded, the first annular frame body partially or completely sleeved on the periphery of the second annular frame body is directly pulled in the direction away from the second annular frame body, so that the expansion folding layer is fully unfolded.

Further, the expansion folding assembly further comprises a first adjustment fastener and a second adjustment fastener, wherein:

first regulation fastener is located the forward left side of package body is adjusted eye-splice pin thread, first dilatation including first dilatation and is adjusted eye-splice box thread, first dilatation and adjust eye-splice box thread, first fixed horizontal meshbelt and the horizontal meshbelt of first regulation, wherein:

one end of the first fixed transverse woven belt is wound on the first capacity expansion adjusting eye-splice female buckle and then is fixed at the front part of the bag body together with the other end of the first fixed transverse woven belt;

the fixed end of the first adjusting transverse woven belt is fixed at the rear part of the bag body, and the free end of the other end of the first adjusting transverse woven belt is wound on the first capacity expansion adjusting buckle male buckle;

the first expansion adjusting insert buckle male buckle is in inserted fit with the first expansion adjusting insert buckle female buckle;

the fastener is adjusted to the second is located the forward right side of package body, adjust eye-splice pin thread, second dilatation regulation eye-splice box thread, the fixed horizontal meshbelt of second and the horizontal meshbelt of second regulation including the second dilatation, wherein:

one end of the second fixed transverse woven belt is wound on the second expansion adjusting buckle female buckle and then is fixed at the front part of the bag body together with the other end of the second fixed transverse woven belt;

the fixed end of the second adjusting transverse woven belt is fixed at the rear part of the bag body, and the free end of the other end of the second adjusting transverse woven belt is wound on the second capacity expansion adjusting eye-splice male buckle;

and the second expansion adjustment male buckle is in plug-in fit with the second expansion adjustment female buckle.

Preferably, the first adjusting fastener further comprises a first adjusting transverse woven belt fixing ring, the first adjusting transverse woven belt fixing ring is sleeved on the first adjusting transverse woven belt, and the free end of the first adjusting transverse woven belt penetrates through the first capacity expansion adjusting buckle male buckle and then is fixed with the fixed end of the first adjusting transverse woven belt; and/or the presence of a gas in the gas,

the fastener is adjusted to the second still includes that the horizontal meshbelt retainer plate of second regulation, the horizontal meshbelt retainer plate of second regulation is established the second is adjusted and is violently knitted on the area, and will the free end of the horizontal meshbelt of second regulation passes behind the eye-splice pin is adjusted in the second dilatation with the stiff end of the horizontal meshbelt of first regulation is together fixed.

Preferably, the number of the first adjusting fasteners and the number of the second adjusting fasteners are two, and the first adjusting fasteners and the second adjusting fasteners are respectively arranged on the upper and lower sides of the left side and the upper and lower sides of the right side of the bag body.

Further, be provided with multidirectional adjusting part on the both shoulders braces, multidirectional adjusting part includes that first vertical meshbelt, first unilateral day word are buckled, the vertical meshbelt of second, the unilateral day word of second are buckled, the chest is adjusted the eye-splice pin thread, the chest is adjusted the eye-splice box thread, the fixed horizontal meshbelt of chest and chest are adjusted horizontal meshbelt, wherein:

the upper end and the lower end of the first vertical woven belt and the second vertical woven belt are respectively fixed on a left shoulder belt and a right shoulder belt of the double-shoulder harness;

the two ends of the chest fixing transverse woven belt are respectively and fixedly connected with the chest adjusting eye-splice female buckle and the side buckle part of the first single-side Chinese character ri buckle;

the fixed end of the chest adjusting transverse woven belt is fixed at the side buckle part of the second single-side Chinese character 'ri' buckle, and the free end of the other end of the chest adjusting transverse woven belt is wound on the chest adjusting eye-splice male buckle;

the chest adjusting insert button male buckle is in inserted fit with the chest adjusting insert button female buckle;

the side buckle part of the first single-side Chinese character 'ri' buckle and the side buckle part of the second single-side Chinese character 'ri' buckle are arranged oppositely;

the Chinese character 'ri' buckle part of the first single-side Chinese character 'ri' buckle and the Chinese character 'ri' buckle part of the second single-side Chinese character 'ri' buckle are respectively sleeved on the first vertical woven belt and the second vertical woven belt and are used for driving the chest adjusting male buckle, the chest adjusting female buckle, the chest fixing transverse woven belt and the chest adjusting transverse woven belt to integrally move up and down.

Preferably, the multidirectional adjusting component further comprises a chest adjusting transverse woven belt fixing ring, the chest adjusting transverse woven belt fixing ring is sleeved on the chest adjusting transverse woven belt, and the free end of the chest adjusting transverse woven belt penetrates through the chest adjusting eye-splice male buckle and then is fixed together with the fixed end of the chest adjusting transverse woven belt.

Further, the backpack comprises a trolley belt, wherein two ends of the trolley belt are sewn on two sides of the back surface of the bag body, and the trolley belt is used for sleeving a luggage pull rod between the trolley belt and the back surface of the bag body so that the backpack is fixed at the upper end of the luggage.

Preferably, the first ring-shaped frame body is square-shaped, and the second ring-shaped frame body is inverse-square-shaped or square-shaped.

Preferably, the first annular frame body and the second annular frame body are made of PE plastic plates or PP plastic plates.

Preferably, the expansion folding layer is made of soft materials.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects:

1. according to the multifunctional expansion backpack, the expansion folding assembly is additionally arranged, so that when the backpack body needs to be expanded, the volume of the backpack body is effectively increased, more articles can be placed in the backpack body, and the practicability is higher; when the bag body does not need to be expanded, the first annular frame body is directly partially or completely sleeved on the periphery of the second annular frame body, so that the front part and the rear part of the bag body are integrated, the integrity is better, the bag body is simpler and more attractive, and in addition, the anti-theft performance of the bag is effectively improved through the arrangement of the first adjusting fastener and the second adjusting fastener;

2. according to the multifunctional expansion backpack, the multidirectional adjusting assemblies are additionally arranged, so that the adjustment of the backpack can be performed up, down, left and right according to users with different body types, the backpack has good applicability, better user experience and better comfort;

3. according to the multifunctional capacity-expansion backpack, the whole width of a capacity-expansion folding layer and a capacity-expansion zipper of the capacity-expansion backpack is about a preset width value d, capacity expansion of any thickness between 0 and d can be realized through the first regulating fastener and the second regulating fastener, and compared with the existing product, the capacity-expansion layer of the zipper capacity expansion can only be changed between 0 and d;

4. the multifunctional expansion backpack has the characteristics of simple structure, ingenious design, convenience in use, low cost, attractive and fashionable appearance, adjustable capacity, strong practicability and the like, and has wide market prospect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a front view of a multifunctional expandable backpack of the present invention;

FIG. 2 is a schematic view of an unfolding structure of the expansion folding assembly of the multifunctional expansion backpack of the present invention;

FIG. 3 is a schematic view of a closing structure of the expansion folding assembly in the multifunctional expansion backpack of the present invention;

FIG. 4 is a left side view of the expanded folding assembly of the multifunctional expandable backpack of the present invention after being unfolded;

FIG. 5 is a left side view of the multifunctional expansion backpack with the expansion folding assembly closed;

FIG. 6 is a right side view of the extended folding assembly of the multifunctional extended backpack of the present invention;

FIG. 7 is a right side view of the multifunctional volume-expanding backpack with the volume-expanding folding assembly closed;

fig. 8 is a rear view of the multifunctional dilatation backpack of the present invention.

[ description of main symbols ]

1-a bag body; 2-shoulder straps; 3-a first annular frame; 4-a second annular frame; 5-expansion folding layer; 6-expanding the zipper; 7-a first capacity expansion adjustment eye-splice male buckle; 8-first capacity expansion adjusting female buckle; 9-a first fixed transverse braid; 10-first adjusting transverse braid; 11-a second expansion adjusting eye-splice male buckle; 12-second expansion adjusting female buckle; 13-a second fixed transverse braid; 14-a second adjusting cross braid; 15-a first adjusting transverse braid fixing ring; 16-a second adjusting transverse braid fixing ring; 17-a first vertical braid; 18-a first single-sided letter t-buckle; 19-a second vertical braid; 20-a second single-side Chinese character ri buckle; 21-chest adjusting eye-splice male buckle; 22-chest adjusting eye-splice box; 23-chest fixation of the transverse braid; 24-chest adjustment cross webbings; 25-chest adjusting transverse braid fixing ring; 26-trolley belt.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-8, this embodiment discloses a multi-functional dilatation shoulders bag, including package body 1, shoulders braces 2 and dilatation folding assembly, wherein:

the double-shoulder braces 2 are arranged at the rear part of the bag body 1;

the dilatation folding assembly set up in 1 front portion of package body, including first annular frame body 3, second annular frame body 4, dilatation folded sheet 5 and dilatation zip fastener 6, wherein:

the first annular frame body 3 is wrapped in the edge of the front part of the bag body 1;

the second annular frame body 4 is wrapped in the edge of the rear part of the bag body 1 facing the front part;

the expansion folding layer 5 is connected with the edge of the first annular frame body 3;

the two sides of the expansion zipper 6 are respectively connected with the expansion folding layer 5 and the second annular frame body 4;

when the bag body 1 does not need to be expanded, the first annular frame body 3 is directly partially or completely sleeved on the periphery of the second annular frame body 4, so that the expansion folding layer 5 and the expansion zipper 6 are closed in the first annular frame body 3 and the second annular frame body 4;

when the bag body 1 needs to be expanded, the first annular frame 3 partially or completely nested on the periphery of the second annular frame 4 is directly pulled in a direction away from the second annular frame 4, so that the expansion folding layer 5 is fully expanded.

In this embodiment, the first ring frame 3 is square, and the second ring frame 4 is n-shaped or square. The first annular frame 3 is slightly larger than the second annular frame 4, and can be partially or completely nested around the second annular frame 4. Preferably, the first annular frame body 3 and the second annular frame body 4 are made of a PE (High Density Polyethylene) or PP (Polypropylene) plastic plate, and have the characteristics of light weight, good toughness and good chemical resistance, and the overall shape of the bag is relatively stiff and dry. In actual production, the corners of the first annular frame body 3 and the second annular frame body 4 can adopt certain round chamfers, so that the bag is smoother.

In order to increase the theftproof effect, can also assist freely expanding to and increase the stability of knapsack under the heavy burden condition, the folding subassembly of dilatation still includes first regulation fastener and second regulation fastener, wherein:

in fig. 4 and 5, the first adjusting fastener is located at the forward left side of the bag body 1, and includes a first capacity-expanding adjusting eye-splice male buckle 7, a first capacity-expanding adjusting eye-splice female buckle 8, a first fixed transverse woven belt 9 and a first adjusting transverse woven belt 10, wherein one end of the first fixed transverse woven belt 9 is wound on the first capacity-expanding adjusting eye-splice female buckle 8 and then fixed to the front portion of the bag body 1 together with the other end; the fixed end of the first adjusting transverse woven belt 10 is fixed at the rear part of the bag body 1, and the free end of the other end of the first adjusting transverse woven belt is wound on the first capacity expansion adjusting eye-splice male buckle 7; the first capacity expansion adjusting eye-splice male buckle 7 is in inserting fit with the first capacity expansion adjusting eye-splice female buckle 8. Preferably, first regulation fastener still includes the horizontal meshbelt retainer plate 15 of first regulation, the horizontal meshbelt retainer plate 15 cover of first regulation is established on the horizontal meshbelt 10 of first regulation, and will the free end of the horizontal meshbelt 10 of first regulation passes behind the eye-splice pin 7 is adjusted in first dilatation with the stiff end of the horizontal meshbelt 10 of first regulation is together fixed, in this embodiment, the setting of the horizontal meshbelt retainer plate 15 of first regulation can prevent effectively that the free end of the horizontal meshbelt 10 of first regulation from passing behind the eye-splice pin 7 is adjusted in first dilatation, and the influence is succinct and pleasing to the eye in the left whole of package body 1, is unlikely to seem mixed and disorderly. In actual production, the positions of the first capacity expansion adjusting buckle male buckle 7 and the first adjusting transverse webbing 10 and the positions of the first capacity expansion adjusting buckle female buckle 8 and the first fixing transverse webbing 9 can be interchanged, and the embodiment is not particularly limited.

In fig. 6 and 7, the second adjusting fastener is located at the right side of the bag body 1, and includes a second expansion adjusting buckle pin 11, a second expansion adjusting buckle box 12, a second fixed transverse woven belt 13 and a second adjusting transverse woven belt 14, and one end of the second fixed transverse woven belt 13 is wound on the second expansion adjusting buckle box 12 and then fixed to the front portion of the bag body 1 together with the other end; the fixed end of the second adjusting transverse woven belt 14 is fixed at the rear part of the bag body 1, and the free end of the other end of the second adjusting transverse woven belt is wound on the second capacity expansion adjusting eye-splice male buckle 11; and the second capacity expansion adjusting insert buckle male buckle 11 is in inserted fit with the second capacity expansion adjusting insert buckle female buckle 12. Preferably, the second adjusting fastener further comprises a second adjusting transverse mesh belt fixing ring 16, the second adjusting transverse mesh belt fixing ring 16 is sleeved on the second adjusting transverse mesh belt 14, the free end of the second adjusting transverse mesh belt 14 penetrates through the second capacity expansion adjusting buckle male buckle 11 and then is fixed together with the fixed end of the first adjusting transverse mesh belt 10. In actual production, the positions of the second capacity expansion adjustment buckle male buckle 11 and the second adjustment transverse webbing 14 and the positions of the second capacity expansion adjustment buckle female buckle 12 and the second fixed transverse webbing 13 can be interchanged, and this embodiment is not particularly limited.

Preferably, the number of the first adjusting fasteners and the second adjusting fasteners is two, and the first adjusting fasteners and the second adjusting fasteners are respectively arranged (or symmetrically arranged) on the upper and lower sides of the left side and the upper and lower sides of the right side of the bag body 1. In actual operation, can set up multiunit regulation fastener according to the size of package body 1, effectively increase the stability of knapsack under the heavy burden condition. In this embodiment, the overall width of the expansion folding layer 5 and the expansion zipper 6 of the expansion backpack is about a preset width value d (in this embodiment, d is 8cm), although the expansion layer of the ordinary zipper expansion backpack is also about the preset width value d, the expansion layer of the zipper expansion can only be 0 or can be changed between the preset width values d, and the expansion backpack in this embodiment can realize the expansion of any thickness between 0 and d (preset width values) through the first adjusting fastener and the second adjusting fastener, so that the accommodation space adjustability is better, the ductility is better, in addition, the overall width of the expansion folding layer 5 and the expansion zipper 6 can be adjusted according to actual production needs, and this embodiment is not specifically limited.

Referring to fig. 8, the shoulder straps 2 are provided with a multidirectional adjusting assembly, which comprises a first vertical webbing 17, a first single-side zigzag buckle 18, a second vertical webbing 19, a second single-side zigzag buckle 20, a chest adjusting buckle male buckle 21, a chest adjusting buckle female buckle 22, a chest fixing transverse webbing 23 and a chest adjusting transverse webbing 24, wherein:

the upper end and the lower end of the first vertical mesh belt 17 and the second vertical mesh belt 19 are respectively fixed on the left shoulder belt and the right shoulder belt of the double-shoulder harness 2;

both ends of the chest fixing transverse woven belt 23 are respectively and fixedly connected with the chest adjusting eye-splice female buckle 22 and the side buckle part of the first single-side Chinese character ri buckle 18;

the fixed end of the chest adjusting transverse woven belt 24 is fixed at the side buckle part of the second single-side Chinese character 'ri' buckle 20, and the free end of the other end is wound on the chest adjusting eye-splice male buckle 21;

the chest adjusting insert button male buckle 21 is in inserted fit with the chest adjusting insert button female buckle 22;

the side buckle part of the first single-side Chinese character 'ri' buckle 18 is arranged opposite to the side buckle part of the second single-side Chinese character 'ri' buckle 20;

the utility model discloses a chest regulation buckle, including first unilateral day word knot 18, second unilateral day word knot 20, first vertical meshbelt 17 and second vertical meshbelt 19, be used for driving the chest is adjusted eye-splice pin thread 21, the chest is adjusted eye-splice box thread 22, the fixed horizontal meshbelt 23 of chest and the chest is adjusted horizontal meshbelt 24 and is wholly reciprocated, can adjust according to the user of different sizes, has fine suitability, and user experience is better, and the comfort level is better. In actual production, the positions of the chest adjusting buckle male buckle 21 and the chest adjusting transverse webbing 24 and the positions of the chest adjusting buckle female buckle 22 and the chest fixing transverse webbing 23 are interchangeable, and the present embodiment is not particularly limited.

Preferably, the multidirectional adjusting assembly further comprises a chest adjusting transverse mesh belt fixing ring 25, the chest adjusting transverse mesh belt fixing ring 25 is sleeved on the chest adjusting transverse mesh belt 24, and the free end of the chest adjusting transverse mesh belt 24 penetrates through the chest adjusting buckle male buckle 21 and then is fixed with the fixed end of the chest adjusting transverse mesh belt 24. Similarly, the arrangement of the chest adjusting transverse mesh belt fixing ring 25 can effectively prevent the free end of the chest adjusting transverse mesh belt 24 from penetrating through the chest adjusting eye-splice male buckle 21 and then being laid down, so that the overall compactness and attractiveness of the double-shoulder strap 2 part are affected, and disorder is avoided.

With further reference to fig. 8, the backpack further includes a cart belt 26, two ends of the cart belt 26 are sewn to two sides of the back of the bag body 1, and the cart belt 26 is used for sleeving a luggage pull rod between the cart belt 26 and the back of the bag body 1, so that the backpack is fixed to the upper end of the luggage. In this embodiment, the length of the cart belt 26 is the same as the width of the back surface of the bag body 1, so that the cart belt can be applied to luggage pull rods with different widths and sizes, and has wide adaptability.

In a preferred embodiment, the expansion folding layer 5 is made of a soft material, such as nylon, and can be folded or unfolded at will while not occupying too much space, so as to be conveniently folded and accommodated inside the first annular frame 3.

The specific working principle is as follows:

when package body 1 does not need the dilatation, draw earlier and close dilatation zip fastener 6, later with first annular framework 3 direct part or complete intussusception in second annular framework 4 periphery to this closes dilatation folded sheet 5 and dilatation zip fastener 6 in first annular framework 3 and second annular framework 4, moreover, can detain all first dilatation regulation eye-splice male buckle 7, first dilatation regulation eye-splice female buckle 8, second dilatation regulation eye-splice male buckle 11 and second dilatation regulation eye-splice female buckle 12, increase the theftproof nature of package in proper order.

When package body 1 needs the dilatation, open earlier all first dilatation regulation eye-splice male button 7, eye-splice box 8 is adjusted in first dilatation, the second expands and holds regulation eye-splice male button 11 and second dilatation regulation eye-splice female button 12, draw the part or the complete intussusception in second annular frame 4 outlying first annular frame 3 to the direction of keeping away from second annular frame 4 and drag for dilatation folded sheet 5 fully expands, and then the accessible pulls open 6 access article of zip fastener.

In addition, for users with different body types, the first vertical mesh belt 17 and the second vertical mesh belt 19 are further arranged on the double-shoulder harness 2, and the first single-side buckle 18 and the second single-side buckle 20 are respectively sleeved on the first vertical mesh belt 17 and the second vertical mesh belt 19, so that the chest adjusting buckle male buckle 21, the chest adjusting buckle female buckle 22, the chest fixing transverse mesh belt 23 and the chest adjusting transverse mesh belt 24 are driven to integrally move up and down.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a multi-functional dilatation shoulders bag which characterized in that, includes package body, shoulders braces and dilatation folding assembly, wherein:

the double-shoulder straps are arranged at the rear part of the bag body;

2. The multi-functional dilatation backpack of claim 1, wherein the dilatation folding assembly further comprises a first adjustment fastener and a second adjustment fastener, wherein:

3. The multifunctional capacity-expanding backpack as recited in claim 2, wherein the first adjusting fastener further comprises a first adjusting transverse webbing fixing ring, the first adjusting transverse webbing fixing ring is sleeved on the first adjusting transverse webbing, and a free end of the first adjusting transverse webbing is fixed with a fixed end of the first adjusting transverse webbing after passing through the first capacity-expanding adjusting male buckle; and/or the presence of a gas in the gas,

4. The multifunctional expansion backpack as recited in claim 2, wherein the number of the first adjusting fasteners and the number of the second adjusting fasteners are two, and the first adjusting fasteners and the second adjusting fasteners are respectively disposed on the left upper side and the right lower side of the backpack body.

5. The multifunctional capacity-expanding backpack as recited in claim 1, wherein the backpack straps are provided with multi-directional adjusting components, the multi-directional adjusting components comprise a first vertical braid, a first single-sided herringbone buckle, a second vertical braid, a second single-sided herringbone buckle, a chest adjusting buckle male buckle, a chest adjusting buckle female buckle, a chest fixing transverse braid and a chest adjusting transverse braid, wherein:

6. The multifunctional capacity-expanding backpack as recited in claim 5, wherein the multidirectional adjusting assembly further comprises a chest adjusting transverse webbing fixing ring, the chest adjusting transverse webbing fixing ring is sleeved on the chest adjusting transverse webbing, and the free end of the chest adjusting transverse webbing is fixed with the fixed end of the chest adjusting transverse webbing after passing through the chest adjusting male buckle.

7. The multifunctional expansion backpack as recited in claim 1, further comprising a cart belt, wherein two ends of the cart belt are sewn to two sides of the back surface of the backpack body, and the cart belt is used for sleeving the luggage pull rod between the cart belt and the back surface of the backpack body, so that the backpack is fixed to the upper end of the luggage.

8. The multifunctional expansion backpack of claim 1, wherein the first ring frame is square and the second ring frame is U-shaped or square.

9. The multifunctional volume-expanding backpack as recited in claim 1 or 8, wherein the first and second annular frame bodies are PE plastic plates or PP plastic plates.

10. The multifunctional dilatation backpack of claim 1 wherein the dilatation fold layer is made of a soft material.