KR101237048B1 - Backpack - Google Patents

Abstract

PURPOSE: A backpack is provided to assemble or separated articles according to the purpose of use or the figure of a user. CONSTITUTION: A backpack comprises a storage unit(110) for accommodating articles, a carriage unit(120) which is detached from the storage unit so that a user can carry the storage unit, a detachment unit(130) which is formed on the exterior of the carriage unit and storage unit and forms a combination space, and a support fixing unit(140) which is inserted into the combination space and prevents the separation of the detachment unit.

Description

Backpack {BACKPACK}

The present invention relates to a backpack, and more particularly, can be assembled or separated in various forms according to the type or quantity of goods or items to be stored, the purpose or use of the purpose, as well as the configuration of the individual It relates to a backpack to facilitate assembly and disassembly.

In general, backpacks are made of leather, cloth, synthetic resin, synthetic vinyl, or the like, so that they can be easily carried by putting articles and objects necessary for daily life or leisure.

Such a backpack can be classified in various ways according to its use. For example, a backpack is divided into a mountain climbing for climbing, a leisure sports used for enjoying leisure, and a backpack mainly used by students.

Climbing backpack is one of the most basic and very important equipment among climbing equipment.It is manufactured to have various sizes and functions according to the weight and type of luggage, or the condition and the hiking period of the climbing destination. Most are done. Such hiking backpacks are not used for everyday use because their interior space is not separated and their design is limited.

Backpacks, which are used mainly for leisure, are also not suitable for everyday use, since they mainly have different functions.

Backpacks (student backpacks) are mainly for storing books, portable PCs, writing instruments, etc., so there is no need to increase the size or add unnecessary functions, and the amount of items to be stored is simple and beautiful. It's mostly about design.

Recently, student backpacks, which are frequently used in everyday life, are recognized as part of the fashion, and their designs and shapes are diversified, and the functional backpacks are also applied to attach auxiliary storage bags partially.

As a conventional functional detachable backpack which allows the storage unit and the shoulder strap to be separated as described above, "back pack detachable backpack" of Korean Registered Utility Model Publication No. 20-431213, Korean Patent Publication No. 10-2004-106204 "Backpacks" and the like of the present application.

The conventional detachable backpack as described above has a disadvantage in that the coupling force of the backrest and the receiving portion is weak, as well as the play between the coupling portions, and the fastening method is not concise and thus takes time during the coupling.

In addition, the conventional detachable backpack is not able to separate the accessory material, such as a cushion in addition to the shoulder belt and the backrest, as well as the detachable attachment of the accessory bag in the shoulder belt or any position does not have free expandability.

The present invention was developed to improve the problems of the prior art as described above, and can be used in a variety of forms or separated depending on the type or quantity of objects or articles to be stored, the purpose or use, body shape, etc. It is an object of the present invention to provide a backpack capable of producing various types of designs to facilitate assembly and disassembly of components.

In order to achieve the above object, the present invention provides an accommodating portion in which an object is accommodated therein, a carrying portion detachable from the accommodating portion so that a user can carry the accommodating portion, and formed on the outer surface of the accommodating portion and the conveying portion, respectively. The present invention provides a backpack including a detachable part forming a coupling space and a support fixing part inserted into the coupling space to prevent the detachable part from being detached from the detachable part and the detachable part of the carrying part.

The present invention also provides a backpack comprising a main accommodating member having a detachable portion on one surface and an auxiliary accommodating member provided with a detachable portion on an entire outer surface of the main accommodating member and the accommodating member.

In addition, the present invention includes a pouch member that is selectively coupled to the main receiving member and the auxiliary receiving member, provides a backpack having a removable portion in the pouch member.

In another aspect, the present invention provides a backpack having a cover member, and includes a receiving portion for forming a connecting ring portion at the upper end and the lower end such that the cover member is coupled to the detachable portion of the housing.

The present invention also provides a backpack having a space for accommodating the article in the cover member.

In another aspect, the present invention provides a backpack that is coupled to the connecting ring and the removable portion through a support fixing portion or a fastening ring.

In addition, the present invention provides a rucksack carrying unit is any one or more selected from a pair of shoulder belt member, a straight belt or handle member.

In addition, the present invention provides a backpack comprising a shoulder pad member which is in contact with the shoulder of the user and is provided with a detachable portion and a shoulder belt member which is coupled to the shoulder pad member and has a detachable portion formed at an end thereof.

The present invention also provides a backpack including a shoulder belt member having a detachable portion provided on one surface of the pad member, and a cushion member contacting the shoulder of the user on the other surface of the pad member by Velcro.

In addition, the present invention is to sew two or more consecutive webbing having a concave-convex shape in the longitudinal direction in the transverse direction and sewed in the receiving portion and the conveying portion, and the webbing of any one of the webbings on the iron and horizontal lines of the webbing adjacent to it. Located in, and provides a backpack comprising a removable portion is formed through the iron portion of the coupling space.

In addition, the present invention provides a backpack including a detachable portion having a coating layer formed on one surface in contact with the support fixing portion.

In addition, the present invention provides a backpack including a support fixing member consisting of a support bar member inserted into the coupling space portion and a fixing member formed at an end of the support bar member and fixed to the coupling space portion.

In addition, the present invention provides a backpack comprising a fixing member fixed to the inner surface of the coupling space portion by elasticity.

In addition, the present invention provides a backpack comprising a compression member is formed in the compression relaxation groove portion having an elastic.

In addition, the present invention provides a backpack including a locking plate member provided on the fixing member to prevent the fixing member from being caught on the inner surface of the coupling space.

In another aspect, the present invention provides a backpack comprising a locking plate member is bent to have elasticity is inserted into the fixing member, the wedge-shaped projection is formed at both ends to expose to the upper and lower surfaces of the fixing member.

In addition, the present invention is provided between the receiving portion and the carrying part to contact the back of the user, and provides a backpack including a back portion which is provided with a removable portion coupled to the receiving portion and the carrying portion through the support fixing portion.

In addition, the present invention is formed in the form of a plate, there is a built-in synthetic resin panel inside the removable portion is formed on both sides, the backpack including a back portion coupled to the receiving portion coupled to the removable portion of one side and the carrying portion coupled to the removable portion of the other surface To provide.

In another aspect, the present invention provides a backpack having a cushion member in contact with the user's back, and includes a backrest portion having a detachable portion provided on one surface of the cushion member.

In addition, the present invention provides a backpack comprising a waist belt member coupled through the cushion member.

According to the backpack according to the present invention configured as described above, the detachable portion formed through the sewn of the webbing is formed in the receiving portion and the carrying portion, respectively, by inserting the support fixing portion in contact with the detachable portion, depending on the user's needs There is an advantage that the payment and the carrying portion can be easily assembled or separated.

In addition, according to the backpack according to the present invention, since a plurality of housings formed in various forms can be combined with each other, and can be assembled with the carrying unit, there is an advantage that can accommodate a wider variety of objects.

In addition, the present invention has the advantage of being able to assemble or separate the storage unit in various forms according to the kind or quantity of objects or articles, use purpose or use, etc., as well as to easily produce a variety of designs.

In addition, the present invention can not only easily adjust the position of the carrying unit coupled to the receiving unit according to the user's body shape, it is possible to manufacture the receiving unit in a variety of forms, there is an advantage that can be made easier to manufacture the backpack .

1 is an exploded perspective view showing a backpack according to the present invention.
2 is a perspective view of the combination of FIG.
3 is a perspective view showing a detachable part and a support fixing part according to the present invention.
Figure 4 is a front view showing a removable portion and a support fixing portion according to the present invention.
Figure 5 is a side view showing a removable portion and a support fixing portion according to the present invention.
Figure 6 is an enlarged perspective view of the main portion showing the removable portion and the support fixing portion according to the present invention.
Figure 7 is a cross-sectional view of the removable portion and the support fixing portion in accordance with the present invention.
8 is a perspective view showing a receiving unit according to the present invention.
9 is a perspective view showing a carrying unit according to the present invention.
10 is a side view of FIG. 9.
11 to 13 are perspective views showing another example of the carrying section according to the present invention.
14 is a perspective view showing a backrest according to the present invention.
Figure 15 is a front view showing the detachable portion of the backrest portion according to the present invention.
16 is a side view of Fig.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It should be interpreted as meaning and concept that correspond.

Hereinafter, a backpack according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIGS. 1 and 2, the backpack 100 according to the present embodiment includes a storage unit 110 for receiving an object, a transport unit 130 detachable from the storage unit 110, and the transport unit ( 130 and the accommodating part 110 includes a detachable part 130 and a support fixing part 140 for selectively detaching.

In addition, the backpack 100 according to the present embodiment is coupled to the receiving unit 110 and the carrying unit 130 more easily, as well as the backrest unit 150 to maintain the shape of the storage unit 110 more stably. It further includes. The backrest 150 is coupled to the receiving unit 110 on one side and the carrying unit 130 on the other side.

In particular, the backpack 100 according to the present embodiment includes a plurality of storage parts 110 and a plurality of transport parts 130, and a removable part 130 in each of the storage parts 110 and the transport part 130. Are all formed to be mutually coupled and separated, and the backrest 150 may also be coupled to and separated from each other a plurality of components.

That is, the backpack 100 according to the present embodiment forms a detachable part 130 in all components, and can be separated and combined with each other to couple the plurality of storage parts 110 to each other in various forms, or the storage part 110. ) And the carrying unit 130 and the backrest 150 may be combined with each other in various forms.

The accommodating part 110 includes a main accommodating member 111, an auxiliary accommodating member 113, and a pouch member 115, and includes a plurality of auxiliary accommodating members 113 based on one main accommodating member 111. The pouch member 115 is provided.

Here, the main accommodating member 111 accommodates a variety of objects or articles, the detachable portion 130 is formed on the outer surface. For example, all of the detachable parts 130 may be formed on one surface of the main accommodating member 111 that contacts the back of the user, and only a part of the detachable parts 130 may be formed on the other surface.

In this case, the main accommodating member 111 may selectively detach the auxiliary accommodating member 113 or the backrest part 150 on one surface where all the detachable parts 130 are formed, and only a part of the detachable part 130 is formed. The pouch member 115 may be selectively removable on the surface.

That is, the main receiving member 111 is coupled to the backrest portion 150 or the auxiliary receiving member 113 on one surface, the pouch member 115 is coupled to the other surface.

Auxiliary receiving member 113 is formed in plural to have a variety of sizes according to the user's needs, the removable portion 130 is formed on the outer surface. The auxiliary receiving member 113 may selectively combine a plurality of the carrying part 130, the backrest part 150, and the main accommodating member 111, and may be coupled to each other.

That is, the auxiliary storage member 113 may be coupled to each other, and the carrying unit 130 may be coupled to form the backpack 100.

In the auxiliary storage member 113 according to the present embodiment, it is preferable to store an article such as a book, a notebook, a notebook, or the like, and may be manufactured in plural to have various sizes.

The pouch member 115 is also provided with a detachable portion 130 on the outer surface to selectively detach a plurality of the main storage member 111, the auxiliary storage member 113, the backrest portion 150, removable according to the needs of the user The portion 130 may be formed on all outer surfaces or only on some surfaces.

The pouch member 115 may accommodate a small article such as a mobile phone or a camera.

On the other hand, the backpack 100 according to the present embodiment further includes a cover member 117 to prevent the housing 110 from being wet by rain water. The cover member 117 is connected to one end portion and the tartan portion to be selectively detachable to the main accommodating member 111 and the auxiliary accommodating member 113 by using the detachable portion 130 and the support fixing portion 140. 117a is formed spaced apart.

In addition, the cover member 117 is formed with a receiving space to accommodate the object therein, and further includes a fastening ring 119 to fix the connecting ring 117a and the removable portion 130.

Fastening ring 119 may be formed in a variety of forms according to the user's needs, it is used to cover the main receiving member 111 with the cover member 117.

1, 8 to 13, the carrying unit 120 includes a pair of shoulder belt member 121, a straight belt 123, a plurality of handle members 125, the user's needs Depending on the pair of shoulder belt member 121, the linear belt 123, a plurality of handle members 125 to use any one or more selected from the main receiving member 111, the auxiliary receiving member 113 or Can be selectively coupled to the backrest 150.

The carrying unit 120 has a shoulder belt member 121, a belt-shaped in a straight shape 123, a detachable portion 130 is formed in the plurality of handle members 125, respectively, and is supported through the support fixing part 140. It may be selectively coupled to the receiving member 111, the auxiliary receiving member 113 or the backrest 150.

The shoulder belt member 121 is in contact with the shoulder of the user and the shoulder pad member 121a having a detachable portion 130 provided on one surface thereof, and the shoulder pad member 121a coupled to the shoulder pad member 121, and a detachable portion 130 is formed at an end thereof. It includes a connecting belt 121b.

In addition, the shoulder belt member 121a is detached by the Velcro 121d from the cushion member 121c that contacts the shoulder of the user on the other surface of the shoulder pad member 121a.

The shoulder belt member 121a may be coupled to the pouch member 115 to a detachable portion 130 formed on one surface thereof.

Carrying unit 120 according to the present embodiment is preferably coupled to the shoulder belt member (121a) and the main receiving member 111, the backrest 150, the belt 123 and the net member 125 It is preferable to couple to the auxiliary receiving member 113. This is only one example and may be coupled to the carrying unit 120 to the housing 110 and the backrest 150 in various forms according to the needs of the user.

 3 to 7, the detachable part 130 and the fixed support member 140 according to the present embodiment will be described.

The detachable part 130 is formed on the outer surfaces of the accommodating part 110 and the carrying part 120, respectively, and forms a coupling space part 130a by contacting each other. The detachable part 130 according to the present embodiment is formed by seizing the webbing in the form of a string on the accommodating part 110 and the carrying part 120.

Detachable portion 130 is sewn in the receiving portion 110 and the conveying portion 120 by arranging two or more webbing having a concave-convex shape (131, 133) in the longitudinal direction in the longitudinal direction, any one of the webbing Of the webbing yaw 131 is located on the horizontal line with the neighboring webbing iron 133. At this time, the coupling portion 130a is formed through the iron 133.

Such, the detachable portion 130, for example, when combining the detachable portion 130 of the shoulder belt member 121a and the detachable portion 130 of the accommodating portion 110 to be coupled to each other, the shoulder belt member 121a The iron side 133 of the side is contacted with each other so as to be inserted into the yaw 131 of the accommodating part 110, and is supported by the coupling space 130a formed by the insertion of the iron 133 and the yaw 131. As the government 140 is inserted, the accommodating part 110, the carrying part 120, and the backrest part 150 are selectively coupled to each other according to a user's needs.

In addition, the detachable portion 130 is further formed with a coating layer 135 on one surface so that the shape of the unevenness (131, 133) can be stably maintained and the insertion of the support fixing portion (140) is smooth. In addition, the detachable part 130 is sewn into the accommodating part 110, the carrying part 120, and the backrest part 150 such that the coating layer 135 on one surface is positioned on the inner surface of the coupling space 130a.

In the present embodiment, for example, the removable part 130 is formed by webbing is sewn on the housing 110, the carrying unit 120, the backrest 150, but the synthetic resin, synthetic rubber according to the needs of the user It may be formed by, for example, may be coupled to the receiving unit 110, the carrying unit 120, the backrest 150 through the thermal bonding, rivets, bolts, screws, Velcro method.

The support fixing part 140 is a support bar member 141 inserted into the coupling space portion 130a and a fixing member formed at an end of the support bar member 141 and fixed to an inner surface of the coupling space portion 130a ( 143).

The support fixing part 140 is inserted into the detachable part 130 to selectively combine the receiving part 110, the carrying part 120, and the backrest part 150, as well as the receiving part 110 and the carrying part ( 120, the back portion 150 is formed of a flexible material such as cloth or vinyl, and when it is difficult to maintain the shape is inserted into the detachable portion 130, the storage unit 110, the carrying unit 120, the backrest It is also possible to form the frame of 150 to maintain the shape.

The support fixing part 140 according to the present embodiment is formed such that the length of the support bar member 141 has various lengths.

The fixing member 143 is supported and fixed to the inner surface of the coupling space 130a through elasticity. To this end, the fixing member 143 is elastic through the formation of the compression relaxation groove 143a to enable compression relaxation.

That is, the fixing member 143 is compressed by the compression relaxation groove 143a when the user presses the upper and lower parts and can be inserted into the coupling space 130a, and the upper and lower surfaces of the fixing space 130a are relaxed when the pressure is removed. Is fixed in contact with the inner surface.

In particular, the support fixing part 140 is provided with a locking plate member 145 in the fixing member 143 to be more stably fixed to the coupling space (130a).

The locking plate member 145 prevents the fixing member 143 from being caught on the inner surface of the coupling space 130a.

To this end, the engaging plate member 145 is bent to have elasticity and is inserted into the fixing member 143, and both ends (upper and lower) are exposed to the upper and lower surfaces of the fixing member 143, respectively, and the coupling space portion 130a. ) Is inserted and fixed to the inner surface.

In addition, the locking plate member 145 is formed with a wedge-shaped protrusion 145a at the upper and lower ends exposed to the upper and lower surfaces of the fixing member 143, respectively, so as to be more stably fixed to the inner surface of the coupling space 130a.

The locking plate member 145 increases the elastic force of the fixing member 143 to further improve the coupling force of the detachable part 130 and the support fixing part 140.

1, 2, 14 to 16, the backpack 100 according to the present embodiment further includes a back portion 150 to improve the wearing feeling by the shoulder belt member 121a.

The backrest 150 is provided between the accommodating part 110 and the shoulder belt member 121a of the carrying part 120 so as to contact the back of the user, and a detachable part 130 is provided to support the fixing part 140. It is selectively coupled with the receiving unit 110 and the carrying unit 120 to maintain the shape of the portion of the receiving unit 110 in contact with the user's back.

The backrest member 150 has detachable portions 130 formed on both sides thereof, and a main receiving member 111 or an auxiliary receiving member 113 of the accommodating part 110 is selectively coupled to one surface thereof, and the shoulder on the other surface thereof. The belt member 121a is coupled.

In addition, the backrest 150 is formed in a plate shape, the synthetic resin panel 151 is embedded therein for maintaining the shape.

In addition, the backrest 150 is provided with a cushion member 153 in contact with the back of the user, the removable portion 130 is formed on one surface of the cushion member 153, the cushion member 153 is a support fixing portion 140 Detachable selectively through. Detachable parts 130 are formed on one surface of the cushion member 153 and are coupled to the backrest part 150 or the receiving part 110.

In addition, the backrest 150 further includes a waist belt member 155 to further improve the user's wearing comfort and reduce movement of the accommodating part 110 during movement.

At this time, the waist belt member 155 is coupled through the waist cushion member 153 of the cushion member 153. In addition, the waist belt member 155 may further be coupled to the side cushion member 153 ′.

Here, the waist cushion member 153 and the side cushion member 153 'are each formed with a coupling hole 153a to be coupled to the waist belt member 155, and a detachable portion of the side cushion member 153' is formed. The pouch member 115 is detached to the 130.

In the backpack according to the present exemplary embodiment configured as described above, the detachable part 130 formed through the stitching of the webbing is formed in the accommodating part 110, the carrying part 120, and the backrest part 150, respectively. By inserting the support fixing part 140 into the part 130, the receiving part 110, the carrying part 120 and the backrest part 150 can be assembled or separated in various designs according to the user's needs. In particular, all components of the accommodating part 110, the carrying part 120, and the backrest part 150 may be disassembled and assembled. For this reason, the design of the backpack 100 may be variously changed according to a user's taste, body shape, or type of portable goods.

Furthermore, since the coupling position of the shoulder belt member 121 in the carrying part 120 or the backrest part 150 can be easily adjusted according to the user's body shape, the user's wearing feeling can be further improved.

In addition, since the plurality of accommodating parts 110 formed in various forms may be combined with each other, and thus may be assembled with the carrying part 120, the backpack 100 has an advantage of accommodating a larger amount of objects.

In addition, when the backpack 100 is damaged, since only the damaged part can be removed and replaced, not only can the maintenance cost be significantly reduced, but also the storage unit 110, the carrying unit 120, and the backrest unit ( Since each component part of 150 may be manufactured, manufacturing is easy, and each component of the accommodating part 110, the carrying part 120, and the backrest part 150 may be manufactured in various forms.

In addition, according to the change of fashion, it is possible to manufacture or replace only a specific part of the accommodating part 110, the carrying part 120, and the backrest part 150, and the accommodating part 110, the carrying part 120, and the backrest part. Since 150 can be manufactured and sold separately, the purchase or sale price of a consumer or a seller can be very diversified.

It will be apparent to those skilled in the art that the present invention is not limited to the embodiment described above, but may be embodied in various other forms without departing from the spirit of the invention, It will be understood by those of ordinary skill in the art that various changes and modifications may be made without departing from the scope of the present invention.

100: backpack 110: storage
111: main storage member 113: auxiliary storage member
115: pouch member 117: cover member
120: carrying part 121: shoulder belt member
123: belt 125: handle member
121a: cushion member 130: removable portion
131, 133: unevenness 140: support fixing portion
141: support bar member 143: fixing member
145: locking plate member

Claims (20)

An accommodation unit 110 is accommodated therein; A carrying unit 130 detachable from the storing unit so that a user can carry the storing unit; Detachable parts 130 are formed on the outer surface of the receiving portion and the conveying portion, respectively, to form a coupling space 130a in contact with each other; And a support fixing part 140 inserted into the coupling space part to fix the detachable part of the accommodating part and the detachable part of the carrying part to prevent separation of the detachable part.
The support fixing part support bar member 141 is inserted into the coupling space portion; And a fixing member (143) formed at an end of the support bar member and fixed to the coupling space. The method of claim 1,
The accommodating part may include: a main accommodating member 111 provided with the detachable part on one surface thereof; And an auxiliary receiving member 113 provided with the detachable part on the entire outer surface thereof.
The backpack characterized in that the main receiving member and the auxiliary receiving member is coupled to each other. The method of claim 2,
The accommodating portion further comprises a pouch member (115) selectively coupled to the main accommodating member and the auxiliary accommodating member, characterized in that the pouch member is provided with the detachable portion. The method of claim 1,
The accommodating part includes a cover member (117), and the cover member is characterized in that the upper and lower ends to form a coupling ring portion (117a) to be coupled to the removable portion of the accommodating portion, respectively. The method of claim 4, wherein
The cover member is a backpack, characterized in that a space for accommodating the article is formed therein. The method according to claim 4 or 5,
Backpack, characterized in that the connecting ring and the detachable portion is coupled through the support fixing portion or fastening ring (119). The method of claim 1,
The carrying unit is a backpack, characterized in that any one or more selected from a pair of shoulder belt member 121, a straight belt 123 or the handle member (125). The method of claim 7, wherein
The shoulder belt member is in contact with the user's shoulder and the shoulder pad member (121a) provided with the removable portion; And a connecting belt (121b) that is coupled to the shoulder pad member and has a detachable portion formed at an end thereof. The method of claim 8,
The shoulder belt member is a backpack, characterized in that the detachable portion is provided on one surface of the pad member and the cushion member (121c) in contact with the user's shoulder on the other surface of the pad member detachable by the Velcro (121d). The method of claim 1,
The detachable part is arranged in two or more consecutive webbings having a shape of irregularities 131 and 133 in the longitudinal direction in the horizontal direction, and is sewn into the receiving part and the carrying part, and the yaw of the webbing of any one of the webbings 131 ) Is located on the horizontal line with the iron (133) of the neighboring webbing, the backpack characterized in that forming the coupling space portion through the iron (133). 11. The method of claim 10,
The detachable part backpack, characterized in that the coating layer 135 is further formed on one surface. delete The method of claim 1,
The fixing member 143 is a backpack, characterized in that fixed to the inner surface of the coupling space portion. The method of claim 13,
Backpack characterized in that the compression relaxation groove portion (143a) is formed to have the fixing member (143) elastic. The method according to claim 1 or 13,
The support fixing part backpack further comprises a locking plate member (145) provided in the fixing member to prevent the fixing member from being caught on the inner surface of the coupling space portion. The method of claim 15,
The hook plate member is bent to have an elastic insert is inserted into the fixing member, both backpacks, characterized in that the upper and lower surfaces of the fixing member are respectively exposed to form a wedge-shaped projection. The method of claim 1,
It is provided between the receiving portion and the carrying part so as to contact the back of the user, characterized in that it further comprises a back portion 150 is provided with the removable portion coupled to the receiving portion and the carrying part through the support fixing portion Backpack. The method of claim 17,
The backrest portion is provided with a synthetic resin panel 151 therein, characterized in that the backpack is characterized in that the removable portion is formed on each side. The method according to claim 17 or 18,
The backrest portion is provided with a plurality of cushion members (153) in contact with the back of the user, characterized in that the cushion member is provided with the removable portion. The method of claim 19,
Any one or more of the cushion members of the cushion member is formed with a coupling hole (153a), characterized in that the waist belt member 155 through the coupling hole to fix the backpack.

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