TWI671036B - Composite backpack with adaptive storage space and looks - Google Patents

Abstract

The invention relates to a combined backpack adapted to a storage space and a shape, which is connected to a female backpack connected to a first fixing part, and the first fixing part is provided with a plurality of first fixing holes; a child backpack is connected to a second fixing part A first direction and a second direction are defined on the second fixing portion, and a plurality of first connecting pieces and a plurality of second connecting pieces are provided on the second fixing portion, and the first connecting pieces are in the first direction. Two pairs are arranged opposite each other, and the second connecting members are arranged opposite each other in the second direction. After the first connecting members or the second connecting members pass through the first fixing holes from the outer side, Combined with each other on the inside. Users can plan the storage space and change the appearance and shape by various combinations, and construct a backpack that adapts to the storage space and shape.

Description

Adaptable storage space and shape combined backpack

The invention relates to a combined backpack structure that can expand the storage space and allow the user to determine the appearance shape by himself.

At present, when people go out or go to work, they will use a backpack to carry the items they need to carry. However, because the storage space of the backpack is fixed, it is difficult to expand the storage space for the number of items carried. In addition, the conventional backpack has fewer compartments and poor classification, which may easily cause various items to be mixed in the same storage space, which may cause inconvenience when finding items.

Therefore, there is a new patent case No. M546148 "Backpack Structure" published on August 1, 106 in the Republic of China, which discloses: it consists of a body and one or more backpacks. The base body includes two shoulder straps, and the base body is provided with at least one buckle portion; each backpack is provided with at least one link element, or a buckle portion is further provided; each link element can be used for linking Go to the seat of the base or the buckle of another backpack to be connected, so as to obtain the practical purpose of having various changes in the use state.

The pre-patent case is mainly based on the user arbitrarily attaching a backpack of the required size to a body to meet the best demand for storage space outside. Alternatively, store the backpack in a relatively large backpack before going out. When the shopping volume keeps increasing, remove the backpack and hang it on the outside of the backpack to expand the storage space and increase its storage capacity. However, the fixed directions of the attached large and small backpacks are the same. It is not possible to choose different fixing directions in the vertical or horizontal direction according to the size of the backpack or the position of the zipper opening. Therefore, if it is fixed in different directions, Will affect access to large and small backpack contents.

There is also a new patent case No. M292945 "Multifunctional Backpack" patent published on July 1, 1995, which discloses: the bag body, the first accommodation space is formed by the upper surface, the bottom surface and the sides to be used for Contains items; at least one storage unit or unit accessories are fixed to the outside of the upper surface of the bag body by a re-adhesive method; and a shell is connected to the bottom surface of the bag body and the upper surface of the bag body A second accommodating space is formed to accommodate the accommodating unit. Since the storage unit is fixed to the outside of the upper surface of the bag body in a re-adhesive manner, different sizes of storage units or unit accessories can be selected according to the user's needs, and the items can be sorted and assembled and fixed to the bag body. The outer side of the upper surface makes more effective use of the storage space of the backpack.

Although these pre-patent cases use a magic sticky velvety surface formed on the outer surface of the upper surface of the bag body, the velvety surface can repeatedly adhere the storage unit, and each storage unit of different size can be used in different directions (longitudinal or vertical). Horizontal] fixed to achieve the effect of convenient access to the contents. However, since each accommodating unit is fixed to the bag body only in an adhesive manner, when it is carried on the back of the user, it is easily removed and stolen by Xiaoxiao, so it is not ideal for use.

Therefore, it is considered that the current combined backpack structure has the above disadvantages.

The invention proposes a combined backpack with a suitable storage space and shape. The backpack is provided with a female backpack, which includes a strap surface and an outer edge surface opposite to the strap surface. The outer edge surface is provided with a first fixing portion. The fixing portion is oppositely provided with an outer side surface and an inner side surface, and the first fixing portion is provided with a plurality of first fixing holes penetrating the outer side surface and the inner side surface; at least one backpack is movably fixed to the first On the fixing part, the sub backpack is connected with a second fixing part. A first direction and a second direction are defined on the second fixing part. The second fixing part is provided with a plurality of first connecting members and a plurality of second. Connecting pieces, the first connecting pieces are arranged opposite each other in the first direction, and the second connecting pieces are arranged opposite each other in the second direction, the first connecting pieces or the first The two connecting members are connected to each other on the inner surface after the outer surface passes through the first fixing holes.

The first direction and the second direction are perpendicular to each other. The first direction indicates a lateral direction with respect to the second fixing portion, and the second direction indicates a longitudinal direction with respect to the second fixing portion.

The female backpack is provided with a first receiving space inside, and the first fixing portion is provided with a first zipper for sealing the first receiving space.

A cover sheet is provided at a position adjacent to the first fixing part inside the first receiving space, and the cover sheet is adhered and fixed to the first fixing part by a plurality of adhesive tapes for covering the First fixing hole.

A second accommodating space is provided inside the sub backpack, and a second zipper is provided at the second fixing portion for sealing the second accommodating space.

The sub backpack and the second fixing portion are set as separate types, so that the sub backpack or the second fixing portion can be replaced with different shapes, patterns, colors, patterns or patterns.

The above-mentioned second zipper is provided with four zipper heads, by which two of the zipper heads are pulled, so that the two zipper heads form an opening position in any direction or angle.

The first connecting member and the second connecting members are respectively separated from the second fixing portion.

A plurality of second fixing holes are provided on the second fixing portion at positions corresponding to the first fixing holes of the first fixing portion, and the first connecting members or the second connecting members are respectively passed through. The second fixing holes and the first fixing holes are adhered and fixed to each other.

The first fixing portion is provided in a plate shape.

The invention is also a female backpack, which includes a strap surface and an outer edge surface opposite to the strap surface. The outer edge surface is provided with a first fixing portion, and the first fixing portion is provided with a plurality of first through holes. Fixing holes. The first fixing holes are used for a connecting member to pass through, so that the connecting member is fixed on the outer edge surface.

The first fixing hole is provided with a plurality of connecting members in a rope shape.

The elastic clamping force generated between the above-mentioned connecting pieces is used for clamping various articles.

The first fixing hole is used to hang a notice board, a kanban board, or an advertising sign using the connecting member.

The present invention is also a child backpack, which is coupled to the above-mentioned female backpack, and includes: a second fixed part, which is movably fixed to the first fixed part of the female backpack, and the second fixed part is fixed to the first fixed part. At the positions corresponding to the first fixing holes, there are a plurality of second fixing holes penetrating therethrough; the plurality of connecting members pass through the second fixing holes and the first fixing holes respectively and then are fixed to each other.

The inside of the sub backpack is provided with a second accommodating space, and the second fixing portion is provided with a second zipper for sealing the second accommodating space. The second zipper is set as a four-headed zipper structure, and A fixing element is arranged on the adjacent two zipper heads, so that the adjacent two zipper heads can be fixed to each other.

The above technical features have the following advantages:

1. Through the position of the first connecting member or the second connecting member being bonded to each other, it is hidden on the inside surface of the first fixing part in the first receiving space, and will not be exposed to the outside. The child backpacks cannot be stolen directly through the rear of the mother backpack, thereby enhancing its anti-theft properties. In addition, the two zipper heads are provided with a hook-and-loop fastener or other fixing elements that can be fixed, so that the adjacent two zipper heads can be fixed to each other, so as to avoid being arbitrarily opened, so as to improve the opening from the rear. Cautionary.

2. It is possible to use at least one or more sub backpacks according to different usage requirements, and select the first connecting members arranged in pairs in the first direction or the second connecting members arranged in pairs in the second direction. The connector is fixed on the female backpack, thereby achieving the convenience of use, the expansion of the storage space, and the clear classification of items.

3. Since the sub backpack and the second fixing portion adopt a separate design, the sub backpack or the second fixing portion of different shapes, styles, colors, patterns or patterns can be replaced with each other, so as to generate different visual Aesthetic changes.

4. The first fixing hole of the first fixing portion can be provided with a connecting member, and the visual beauty of various changes can be produced by using the connecting member. Or can hold various items, and hang notice boards, kanban or advertising signs, so as to have functions such as advertising, notices. Alternatively, pattern layers of different shapes are fixed on the second fixing portion, thereby increasing the beauty or interest.

(1) ‧‧‧Female Backpack

(11) ‧‧‧First accommodation space

(12) ‧‧‧First fixed part

(121) ‧‧‧Outside

(122) ‧‧‧Inner side

(123) ‧‧‧First fixing hole

(13) ‧‧‧First Zipper

(14) ‧‧‧ Cover Sheet

(141) ‧‧‧Hook and loop

(18) ‧‧‧ Strap Side

(19) ‧‧‧Outer edge surface

(2), (2A), (2B), (2C), (2D)

(21) ‧‧‧Second accommodation space

(22) ‧‧‧Second Fixing Section

(221) ‧‧‧First connector

(222) ‧‧‧Second connection

(223) ‧‧‧Second fixing hole

(23) ‧‧‧Second Zipper

(231) ‧‧‧Zipper Head

(3) ‧‧‧Female Backpack

(31) ‧‧‧First accommodation space

(32) ‧‧‧First fixed part

(323) ‧‧‧First fixing hole

(33) ‧‧‧First Zipper

(38) ‧‧‧ Strap Side

(39) ‧‧‧Outer edge surface

(4) ‧‧‧ Backpack

(41) ‧‧‧Second accommodation space

(42) ‧‧‧Second Fixing Section

(421) ‧‧‧Connector

(423) ‧‧‧Second fixing hole

(43) ‧‧‧Second Zipper

(431) ‧‧‧Zipper Head

(432) ‧‧‧Hook and loop

(5) ‧‧‧Connector

(51) ‧‧‧ Items

(52) ‧‧‧Notice Board

(53) ‧‧‧Pattern layer

(X) ‧‧‧First direction

(Y) ‧‧‧Second direction

[First image] is an exploded perspective view of the first embodiment of the present invention.

[Second figure] is a three-dimensional combined view of the first embodiment of the present invention.

[Third figure] is a combined sectional view of the first embodiment of the present invention.

[Fourth Figure] is a schematic diagram of the first embodiment of the present invention fixed to the first fixing portion with the first connecting member and the second connecting member, respectively.

[Fifth figure] It is a schematic diagram (a) of the first embodiment of the present invention fixing sub backpacks of different sizes to the first fixing portion.

[Sixth figure] is a schematic diagram (two) of the first embodiment of the present invention fixing sub backpacks of different sizes to the first fixing portion.

[Seventh Figure] is a schematic diagram (c) of the first embodiment of the present invention fixing sub backpacks of different sizes to the first fixing portion.

[Eighth Figure] It is a schematic diagram (four) of the first embodiment of the present invention fixing sub backpacks of different sizes to the first fixing portion.

[The ninth figure] is a partially exploded perspective view of the second embodiment of the present invention.

[Tenth Figure] is a partially exploded perspective view of a third embodiment of the present invention.

[Eleventh figure] is an exploded perspective view of the fourth embodiment of the present invention.

[Twelfth figure] It is a schematic diagram of a backpack according to a fourth embodiment of the present invention fixed to a female backpack in different directions.

[Thirteenth Figure] It is a schematic diagram of a fourth embodiment of the present invention provided with a plurality of connecting members through the first fixing hole.

[Fourteenth Figure] is a schematic view of a fourth embodiment of the present invention to clamp an article by using an elastic clamping force between connecting members.

[Fifteenth figure] It is a schematic diagram of hanging a notice board by using a first fixing hole according to a fourth embodiment of the present invention.

[Sixteenth figure] It is a schematic diagram of fixing different modeling pattern layers on the second fixing portion of the backpack according to the fourth embodiment of the present invention.

[Seventeenth figure] It is a schematic diagram of two zipper heads adjacent to the second zipper of the fourth embodiment of the present invention provided with a hook and loop fastener and fixed to each other.

Please refer to the first and second figures. The first embodiment of the present invention includes: a mother backpack (1) and a child backpack (2), wherein:

The female backpack (1) includes a strap surface (18) and an outer edge surface (19) opposite to the strap surface (18). The female backpack (1) is provided with a first receiving space (11) inside, The outer edge surface (19) is connected with a rigid plate-shaped first fixing portion (12). The first fixing portion (12) is oppositely provided with an outer side surface (121) and an inner side surface (122). The first fixing portion (12) is provided with a plurality of first fixing holes (123) passing through the outer side surface (121) and the inner side surface (122). The first fixing portion (12) is provided with a first zipper (13) combined with the female backpack (1) to seal the first receiving space (11). A cover sheet (14) is provided inside the first accommodation space (11) adjacent to the first fixing part (12), and the shape and size of the cover sheet (14) are similar to those of the first fixing part (12). ), The cover sheet (14) can be adhered and fixed on the first fixing part (12) by a plurality of hook and loop tapes (141) for covering the first fixing part (12). First fixing hole (123).

Child backpack (2) [For the convenience of illustration, the embodiment of the present invention refers to another child backpack of a different size and shape as (2A)], which is movably fixed to the first fixed part of the mother backpack (1) (12) on. The sub backpack (2) is provided with a second accommodating space (21) [as shown in the third figure], and the sub backpack (2) is connected with a second fixing portion (22), and the second fixing The part (22) is provided with a second zipper (23) combined with the sub backpack (2) to seal the second accommodating space (21). The second fixing portion (22) is defined with a first direction (X) and a second direction (Y) that are perpendicular to each other, and the first direction (X) represents a direction relative to the second fixing portion (22). Landscape orientation. The second direction (Y) indicates a longitudinal direction with respect to the second fixing portion (22). The second fixing part (22) is provided with a plurality of first connecting members (221) and a plurality of second connecting members (222) that are perpendicular to each other. The first connecting members (221) are oriented in the first direction (X ) Are arranged opposite each other, and the second connecting members (222) are arranged opposite each other in the second direction (Y). As shown in the fourth figure, the first connecting members (221) arranged opposite to each other in the first direction (X) can be selected to pass through the first fixing parts (12) according to requirements. The first fixing holes (123) are combined with each other and fixed on the first fixing portion (12). Alternatively, the second connecting members (222) arranged opposite to each other in the second direction (Y) may be passed through the first fixing holes (123) and then combined with each other to be fixed to the first fixing portion ( 12) on. Moreover, the first connecting members (221) and the second connecting members (222) are respectively one hook-and-loop tape capable of being fastened to each other.

During use, as shown in the first and third figures, the first accommodating space (11) inside the female backpack (1) is used to load large-volume items. The second accommodating space (21) inside the sub backpack (2) is also used to load smaller items, and more than two sub backpacks (2) can be selected according to different volume items. To sort and load items of different volume sizes. Then, according to the use requirements, the sub backpack (2) selects the first connecting members (221) oppositely arranged in the first direction (X) or the oppositely arranged oppositely in the second direction (Y). After the second connecting member (222), the outer side (121) of the first fixing portion (12) penetrates into the first fixing holes (123), and then on the inner side (122) Adhere to each other. Finally, the cover sheet (14) is bonded and fixed on the first fixing part (12) by using the adhesive tapes (141), so as to cover the first fixing parts on the first fixing part (12). Holes (123) to keep it beautiful.

As shown in the third diagram and the fourth diagram, the first connecting members (221), which are arranged opposite to each other in the first direction (X), of the sub-backpack (2A) are selected by the first fixing portion (12). After the outer side surfaces (121) pass through the first fixing holes (123) one by one, the corresponding first connecting members (221) of each group are adhered and fixed to each other on the inner side surface (122). The sub backpack (2A) can be fixed on the outer side surface (121) of the first fixing portion (12). The opening position of the sub backpack (2A) is preferably opened toward the first direction (X). Alternatively, the second connecting members (222) which are arranged opposite to each other in the second direction (Y) of the sub backpack (2A) are passed through the first connecting portions (12) on the first fixing portion (12) one by one. After a fixing hole (123), the corresponding second connecting members (222) of each group are adhered to each other, and can be fixed on the first fixing portion (12). Thus, another sub backpack (2A) The opening position of) is best opened in the second direction (Y).

Therefore, the user can use different requirements, as shown in the fourth, fifth, sixth, seventh and eighth figures. [For the convenience of illustration, the embodiments of the present invention include child backpacks of different sizes and shapes. (The number is marked with (2A) ~ (2D)], and the child backpacks (2), (2A), (2B), (2C), (2D) of different sizes are selected in the first direction ( X) The first connecting members (221) arranged opposite to each other or the second connecting members (222) arranged opposite to each other in the second direction (Y) and fixed to the first fixing portion (12) In this way, it can achieve the effects of convenience, personalized appearance, expansion of storage space and clear classification of items. At the same time, the first connecting members (221) or the second connecting members (222) are located on the inner side surface (122) of the first fixing portion (12), and are hidden in the first The inside of the accommodating space (11) [please refer to the third picture], so it will not be exposed to the outside, so it is difficult for a young or thief to steal the child backpack (2), directly through the rear of the mother backpack (1), (2A), (2B), (2C), (2D).

As shown in the ninth figure, the second embodiment of the present invention is different from the first embodiment only in that the sub backpack (2) and the second fixing portion (22) are set as Separate type, and the second zipper (23) on the second fixing portion (22) can be a four-headed zipper structure, so that two of the zipper heads (231) can be used for the first direction (X) or the second direction (Y) to open the second zipper (23), so that the two zipper heads (231) form an opening position in any direction or angle (please refer to the fourth figure) Shown]. The second zipper (23) can be pulled to close, so that the second fixing portion (22) can be combined with the sub backpack (2) to seal the second receiving space (21). The sub backpack (2) or the second fixing portion (22) can be replaced with each other in different shapes, patterns, colors, patterns or patterns, so as to generate different visual matching changes, which can increase the appearance variability.

As shown in the tenth figure, the third embodiment of the present invention is different from the first embodiment only in the first connecting members (221) and the second connecting members (222 ) Are separated from the second fixing portion (22). That is, a plurality of second fixing holes (223) are provided on the second fixing portion (22) at positions corresponding to the first fixing holes (123) of the first fixing portion (12). When the sub backpack (2) needs to be fixed on the first fixing part (12), as long as the first connecting members (221) or the second connecting members (222) are passed through the second The second fixing holes (223) on the fixing portion (22) and the first fixing holes (123) on the first fixing portion (12) are then bonded to each other. In this way, different sizes can also be achieved. The function of fixing the sub backpack (2) on the first fixing portion (12).

In the fourth embodiment of the present invention, as shown in FIG. 11, a female backpack (3) includes a strap surface (38), and an outer edge surface (39) opposite to the strap surface (38). The backpack (3) is provided with a first accommodating space (31) inside, the outer edge surface (39) is connected with a first fixing portion (32), and the first fixing portion (32) is provided with a plurality of penetrations therethrough First fixing hole (323). The first fixing portion (32) is provided with a first zipper (33) combined with the female backpack (3) to seal the first receiving space (31).

At least one child backpack (4) is movably fixed on the first fixing part (32) of the female backpack (3). A second accommodating space (41) is provided inside the sub backpack (4). The sub backpack (4) is connected with a second fixing portion (42), and the second fixing portion (42) is located at a position corresponding to the first fixing holes (323) of the first fixing portion (32). A plurality of second fixing holes (423) are provided therethrough. In addition, the second fixing portion (42) is provided with a second zipper (43) combined with the sub backpack (4) to seal the second receiving space (41).

The plurality of connecting pieces (421) pass through the second fixing holes (423) on the sub backpack (4) and the first fixing holes (323) on the first fixing portion (32), respectively. Adhere to each other. In this way, the child backpack (4) can be fixed to the first fixing portion (32) of the female backpack (3) in different directions.

As shown in the thirteenth figure, the first fixing portion (32) of the female backpack (3) can be fixed in different directions in addition to the first fixing portion (32) of the female backpack (3). The first fixing hole (323) is provided with a plurality of rope-shaped connecting members (5), and using these connecting members (5) can produce various different visual aesthetics.

As shown in the fourteenth figure, the elastic clamping force generated between the connecting members (5) can also be used to clamp various articles (51).

As shown in the fifteenth figure, or the first fixing hole (323) is perforated with the connecting member (5) for hanging a notice board (52), a kanban or an advertising signboard, so as to have an advertisement , Notifications and other functions.

As shown in the sixteenth figure, pattern layers (53) of different shapes can also be fixed on the second fixing portion (42) of the sub backpack (4) by means of bonding, bonding or buckling, etc. A personalized look that adds aesthetics or fun.

As shown in the seventeenth figure, the second zipper (43) on the sub backpack (4) can be set as a four-head zipper structure, and two adjacent zipper heads (431) are provided with Hook-and-loop straps (432) or other fixing elements that can be fixed, so that the two adjacent zipper heads (431) can be fixed to each other, so as to prevent the two zipper heads (431) from being arbitrarily opened, and the sub backpack (4).

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood, but the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited in this way. The scope, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, are all within the scope of the present invention.

Claims (14)

An adaptable storage space and shape combination backpack includes: a female backpack including a strap surface, and an outer edge surface opposite to the strap surface, the outer edge surface is provided with a first fixing portion, a first fixing portion An outer side and an inner side are oppositely provided, and the first fixing portion is provided with a plurality of first fixing holes penetrating the outer side and the inner side; at least one backpack is movably fixed to the first fixing portion. In the above, the sub backpack is connected with a second fixing part, a first direction and a second direction are defined in the second fixing part, and the second fixing part is provided with a plurality of first connecting members and a plurality of second connecting members. The first connecting members are arranged opposite to each other in the first direction, and the second connecting members are arranged opposite to each other in the second direction. The first connecting members or the second connections The pieces pass through the first fixing holes from the outer surface, and then are combined with each other on the inner surface. According to the combined backpack for adapting the storage space and the shape as described in item 1 of the scope of the patent application, the first direction and the second direction are perpendicular to each other, and the first direction indicates a lateral direction with respect to one of the second fixing portions. Direction, the second direction represents a longitudinal direction relative to the second fixing portion. According to the combined backpack with a suitable storage space and shape as described in item 1 of the scope of patent application, the female backpack is provided with a first receiving space inside, and the first fixed portion is provided with a first zipper for sealing the first One accommodation space. As described in item 3 of the scope of the patent application, a combined backpack with a suitable storage space and shape, wherein a cover sheet is attached to the interior of the first storage space adjacent to the first fixing portion. A plurality of adhesive tapes are adhered and fixed on the first fixing portion for covering the first fixing holes. According to the combined backpack with a suitable storage space and shape as described in the first patent application scope, wherein the inside of the sub backpack is provided with a second receiving space, and the second fixing portion is provided with a second zipper for sealing the Second accommodation space. According to the combined backpack with a suitable storage space and shape as described in item 5 of the scope of the patent application, the sub backpack and the second fixing part are set as separate types, so that different shapes, patterns, colors, patterns or patterns can be exchanged with each other. The sub backpack or the second fixing portion. According to the patent application scope item 6, the combined storage space and shape combination backpack, wherein the second zipper is provided with four zipper heads, so that two of the zipper heads can be pulled to make the two zipper heads in any direction or angle An opening position is formed on it. According to the combined backpack for adapting the storage space and the shape as described in the first item of the scope of the patent application, the first connecting members and the second connecting members are respectively separated from the second fixing part. According to item 8 of the scope of the patent application, the combined backpack with a suitable storage space and shape, wherein a plurality of first fixing holes are provided on the second fixing portion corresponding to the first fixing holes of the first fixing portion. Two fixing holes, the first connecting members or the second connecting members pass through the second fixing holes and the first fixing holes, and are adhered and fixed to each other. According to the combined backpack for adapting the storage space and the shape as described in item 1 of the scope of the patent application, the first fixing part is formed in a plate shape. A female backpack includes a strap surface and an outer edge surface opposite to the strap surface. The outer edge surface is provided with a first fixing portion. The first fixing portion is provided with a plurality of first fixing holes therethrough. The first fixing holes are provided for a connecting member to pass through, so that the connecting member is fixed on the outer edge surface, and a plurality of the rope-shaped connecting members are passed through the first fixing holes. The first fixing holes are Use this connector to hang a notice board, a kanban board, or an advertising sign. The female backpack according to item 11 of the scope of the patent application, wherein the elastic clamping force generated between the connecting members is used for clamping various items. A child backpack, which is combined with the female backpack described in item 11 of the scope of patent application, includes: a second fixed part, which is movably fixed to the first fixed part of the female backpack, and the second fixed part is connected with the first fixed part A plurality of second fixing holes penetrating therethrough are provided at positions corresponding to the first fixing holes of the first fixing portion; the plurality of connecting members pass through the second fixing holes and the first fixing holes respectively. Fix each other again. The sub backpack according to item 13 of the patent application scope, wherein the inside of the sub backpack is provided with a second receiving space, and the second fixing portion is provided with a second zipper for sealing the second receiving space. The two zippers are set as a four-headed zipper structure, and a consolidation element is provided on the adjacent two zipper heads, so that the adjacent two zipper heads can be fixed to each other.