JP2006141567A - Backpack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a backpack which is equipped with a gas expanding protection system, and has both the original function of housing articles, and in addition, the function of protecting a user who has encountered misfortune such as the fall of a bicycle. <P>SOLUTION: This backpack is equipped with a main body section (10), a back mounting section (11) on which shoulder belts (14L and 14R) are provided, and to which the main body section is detachably attached, gas expansion bags (28, 30 and 31) which are arranged on the back mounting section and transfer from a contraction to an expansion by the feeding of a gas, and a connecting means (50). In this case, the connecting means (50) performs the attachment of a gas feeding means (40) which takes a gas feeding state for the gas expansion bags in response to the situation of the back mounting section to the back mounting section of the main body section by mutually connecting the main body section and the back mounting section in an attachable/detachable manner. Also, the connecting means (50) enables the main body section to move in the separating direction from the back mounting section when the gas expanding means takes the expansion by the gas being fed from the gas feeding means under the state that the main body section and the back mounting section are being mutually communicated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The invention described in the scope of claims of the present application relates to a rucksack that is used by a passenger who rides a two-wheeled vehicle such as a bicycle or a motorcycle, for example.

  A life jacket made of a vest type or a jacket type having gas inflation means such as an airbag is known. In such a life jacket, the gas expansion means provided on the life jacket expands by supplying gas and serves as a float or a cushion. It is intended to protect the user. In addition, to protect passengers when a vest type or jacket type is created and worn by a passenger who rides on a motorcycle, etc., and the passenger falls from the motorcycle. A vest is also known (see, for example, Patent Document 1).

  In a garment that is intended to protect passengers riding such motorcycles, an inflation chamber that is folded along a folding line that is determined as appropriate, and an inflation air according to the situation. And an activation device for supplying gas to the chamber. Then, for example, when a situation occurs in which the passenger wearing the jacket suddenly unintentionally separates from the motorcycle or the like, the activation device is activated to supply gas to the expansion chamber, thereby being folded. The expanded air chamber rapidly expands outward along the folding line and takes a deployed state. As a result, the passenger is protected.

  The above-described vest type or jacket type vest is worn by the user in the expectation of a contingency that threatens the safety of the user. In addition to the original function that is used as the vest type and jacket type and is worn by the user on the back and used by the user, the function as a life jacket or A rucksack has been proposed that also has a disaster prevention function.

  As a rucksack with a function as a life jacket, a back belt with a built-in shoulder belt, backpack (back cushion) and float (float) formed using a buoyancy material as a cushion material, A back body to which the backpack is detachably attached, and the shoulder belt and the backpack are interconnected by the connecting belt, and the backpack and the back back are connected to each other. A bag having a series of backs is known (see, for example, Patent Document 2).

  In such a rucksack, in the normal time, the back body is attached to the back body to carry the original function of the rucksack, and when it is used as a life jacket, the back body is the back part. The gas from the gas cylinder is injected into the air bag. Then, a life jacket is formed by the back portion from which the back main body is separated, the shoulder belt, and the back of the bag that stores the gas-filled floating bag. Such a life jacket is intended to protect the user by acting buoyancy when immersed in water with the user wearing the life jacket.

  In addition, as a rucksack with a disaster prevention function, a rucksack body (a zack body), a hood formed integrally with the zack body or detachably arranged, and a back strap attached to the zack body Is known (for example, see Patent Document 3). In this rucksack, an airbag for protecting the head and neck of the user wearing the hood from a fallen object in the event of an earthquake, for example, is detachably attached to the back of the hood, and For example, an airbag for protecting a user carrying the Zac body from drought is stored in the airbag storage portion arranged on the string.

  Further, as a rucksack having a disaster prevention function, a rucksack body, a hood, and a hood that interconnects the rucksack body and the hood and is folded in two to form a hood storage section. A thing provided with a belt for storage is also known (for example, refer to patent documents 4). In this rucksack, a gas bag for protecting the user's head or the like wearing the hood from, for example, a fallen object during an earthquake is housed inside the hood.

  For a rucksack whose hood is integrally formed with the rucksack body or a hood whose hood is detachably arranged on the rucksack body, an airbag attached to the hood so as to be detachable An automatic gas filling device including a gas cylinder is provided for each of the airbags stored in the airbag storage unit disposed on the back strap. And the automatic gas filling apparatus provided with respect to the airbag accommodated in the airbag storage part arranged on the backpack string, when it is immersed in water, removes the airbag stored in the airbag storage part. The air bag which is automatically inflated by the gas from the gas cylinder and thus inflated serves as a floating bag. In addition, the automatic gas filling device provided for the airbag detachably attached to the hood is manually inflated by the gas from the gas cylinder. The airbag inflated thereby plays a role of protecting the head and the neck of the user wearing the hood from falling objects and the like.

In addition, in a rucksack with a hood storage band that interconnects the rucksack body and the hood, the hood storage band that is folded in half and stores the hood is removably engaged with the rucksack body. It is stopped and the half-fold state is maintained. And supply of the gas to the gas bag accommodated in the exhaust state inside the hood is performed by operating a gas filling device provided in the gas bag by manual operation. Then, when the gas from the gas filling device is supplied to the gas bag, the locking of the hood storage belt to the rucksack body is released by the expansion of the gas bag by the gas, and the hood storage belt which is folded in half is formed. Transition to an open state where the hood is exposed to the outside. The hood storage band thus opened protects the neck of the user carrying the rucksack body. In addition, the hood that is exposed to the outside covers the head of the user who carries the rucksack body, so that the inflated airbag protects the head of the user.
Japanese Patent Laid-Open No. 2002-20907 JP 2004-41392 A JP-A-9-131222 JP-A-10-323224

  In recent years, rucksacks have been widely used on a daily basis without being limited to trekking and hiking. Therefore, when such a daily use rucksack has a function of protecting and protecting the user, for example, a vest type or a jacket type for protecting the user. The user can be protected even if the vest is not worn.

  However, in the rucksack in which the shoulder belt, the backpack, and the back of the back are as described above, the shoulder belt using the buoyancy material as a cushioning material, the backpack with the back body separated, and The safety of the user who has been immersed in the water is intended by the buoyancy acting on the back bag and the bag filled with gas. In addition, as described above, the hood is integrally formed with the rucksack body, the hood is detachably attached to the rucksack body, and the rucksack body and the hood are interconnected. Each of the rucksacks, which are supposed to be equipped with a hood for storing a hood, is supposed to be used when an earthquake occurs, and protects the user from falling objects. Yes. Therefore, these rucksacks can be used to protect the user when the user encounters a disaster such as a two-wheeled vehicle falling over the bicycle or motorcycle. Has not been.

  In addition, for such a rucksack, a vest type or jacket type that is provided with the above-described inflation chamber and is worn by a rider riding a motorcycle, etc., the rider falls from the motorcycle, etc. When the situation is imitated, the expansion chamber is supposed to be inflated rapidly by the gas from the activation device to protect the passenger, but the problem is that it is a vest type or jacket type jacket. Accompanying. In other words, vests created as vest type or jacket type are worn by the user, so the design etc. are subject to likes and dislikes and it is difficult to spread, and about one item There is a problem that preparation of a plurality of sizes is required, which increases production costs, and in addition, there is a problem that use is disliked in high temperature seasons.

  Therefore, a rucksack whose size type required for one item is less than that of a vest type or a jacket type is used by a user such as a bicycle or motorcycle. Includes gas expansion means and gas supply means for supplying gas depending on the situation, which can protect users when they encounter a disaster such as a motorcycle falling while riding in a motorcycle. It would be desirable to have a gas expansion protection system comprising: A rucksack equipped with such a gas expansion protection system can be expected to spread widely because the rucksack is originally widely used regardless of the season. Is.

  However, conventionally, when the user encounters a disaster such as a fall of a two-wheeled vehicle while riding a two-wheeled vehicle such as a bicycle or motorcycle, the gas expansion can protect the user. There are no rucksacks with a protection system, and there are no documents describing such rucksacks.

  In view of such points, the invention described in the claims of the present application is provided with a gas expansion protection system including a gas expansion means and a gas supply means for supplying gas depending on the situation. In addition to the original function of storing goods, the user should be protected when he / she encounters a disaster such as a motorcycle falling while riding a motorcycle such as a bicycle or motorcycle. Provide a rucksack with a function that can be planned.

  A rucksack according to the invention described in any one of claims 1 to 11 in the claims of the present application is provided with a main body portion that accommodates an article and a shoulder belt, and the main body portion is detachably attached. A backpack portion, a gas expansion means that is arranged in the backpack portion and shifts from a contracted state to an expanded state by supplying gas, and a gas supply means that takes a state of supplying gas to the gas expansion means according to the situation of the backpack portion The main body part is attached to the backpack part by detachably connecting the main body part and the backpack part, and gas expansion is performed by the gas supplied from the gas supply means while the main body part and the backpack part are interconnected. And connecting means that enables movement in a direction away from the backpack of the main body when the means is in an expanded state.

  In particular, the rucksack according to the invention described in claim 2 in the claims of the present application causes the gas supply means to take a state of supplying gas to the gas expansion means in response to a sudden movement of the backpack. Gas supply control means is provided.

  In the rucksack according to the invention described in any one of claims 1 to 11 in the claims of the present application, the gas expansion means and the gas supply means arranged in the backpack portion include gas expansion It shall constitute a protection system. In this rucksack, the gas expansion protection system is activated when, for example, the backpack disposed on the back of the user moves suddenly while being carried on the back by the user. To do. When the gas expansion protection system is activated, the gas from the gas supply means is supplied to the gas expansion means and the gas expansion means expands. At this time, if the main body is attached to the backpack, the gas expansion means expands. By the gas expansion means, the main body part attached to the backpack part is moved away from the backpack part, so that the gas expansion means can be expanded quickly and reliably without being obstructed by the main body part. It is supposed to be possible. In addition, under the condition that the main body is not attached to the backpack, the backpack placed on the back of the user moves suddenly, for example, to protect the gas expansion. When the system is activated and the gas from the gas supply means is supplied to the gas expansion means, the gas expansion means expands quickly and reliably without interference from others.

  Therefore, the rucksack according to the invention described in any one of claims 1 to 11 in the claims of the present application is used by a user who carries the backpack on a motorcycle such as a bicycle or a motorcycle. The gas expansion means will expand quickly and reliably regardless of whether the main body is attached to the backpack when a disaster such as a two-wheeled vehicle falls over in the situation of boarding. The As a result, according to such a rucksack, in addition to being able to be used originally for storing articles, the user is in a situation of riding a motorcycle such as a bicycle or a motorcycle. Therefore, when a disaster such as a fall of a motorcycle is encountered, the user is surely protected.

  Moreover, the rucksack according to the invention described in any one of claims 1 to 11 in the claims of the present application is not intended to be worn by the user. The advantage that the user's feeling of resistance to use depending on the season is relatively small can be obtained.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the invention described in any one of claims 1 to 11 in the claims of the present application will be described with reference to embodiments 1, 2 and 3 described below. Is done.

  2 and 3 show an example (Example 1) of a rucksack according to the invention described in any one of claims 1 to 10 in the claims of the present application.

  In the example shown in FIGS. 2 and 3, the main body 10 that accommodates various articles, the left and right waist belts 13L and 13R, and the backpack 11 having left and right shoulder belts 14L and 14R disposed thereon. Is provided. The backpack 11 is located on the opposite side of the user side contact portion 11A that faces the user's back when it is carried by the user, and faces the main body 10. It is assumed that the bag storage unit 16 is provided at the upper end portion.

  As shown in FIGS. 4 and 5, each of the waist belts 13L and 13R is provided with a bag storage portion 21 in which a gas expansion bag 20 folded and contracted is stored, and a narrow band portion 22 extending therefrom. It has been. Depending on the situation, the gas expansion bag 20 is supplied with gas from a gas supply means 40 described later, for example, through a gas passage (not shown). Each of the shoulder belts 14L and 14R is also provided with a bag storage portion 25 in which a gas expansion bag 24 folded and contracted is stored, and a narrow belt portion 26 extending therefrom. The gas from the gas supply means 40, which will be described later, is also supplied to the gas expansion bag 25 through a gas passage (not shown), for example, depending on the situation.

  The waist belt 13 </ b> L has a bag storage portion 21 attached to the lower left side of the backpack 11, and an engagement portion 27 </ b> A is provided at the distal end portion of the narrow belt portion 22 extending from the bag storage portion 21. Yes. Further, the waist belt 13R has a bag storage portion 21 attached to the lower right portion of the backpack portion 11, and selectively engages with the engaging portion 27A at the distal end portion of the narrow band portion 22 extending from the bag storage portion 21. It is assumed that an engaged portion 27B that is in an engaged state is provided. The engaging portion 27A and the engaged portion 27B have a mutual engagement state for ensuring the wearing of the waist belts 13L and 13R to a user who carries the backpack portion 11 and a separated state separated from each other. Take selectively.

  In the shoulder belt 14L, the bag storage portion 25 is attached to the upper end portion of the backpack 11, and a narrow belt portion 26 extending from the bag storage portion 25 is attached to the bag storage portion 21 of the waist belt 13L. Further, also in the shoulder belt 14R, the bag storage portion 25 is attached to the upper end portion of the backpack 11, and a narrow band portion 26 extending from the bag storage portion 25 is attached to the bag storage portion 21 of the waist belt 13R. .

  A gas storage bag 28 folded and contracted is also stored in the bag storage 16 provided in the backpack 11 described above. And the gas from the gas supply means 40 mentioned later is supplied also to the gas expansion bag 28 through the gas channel which abbreviate | omitted illustration, for example according to a condition.

  When the gas from the gas supply means 40 is supplied, the gas expansion bag 28 stored in the bag storage unit 16 is rapidly expanded by the gas and takes an expanded state in which the gas expansion bag 28 jumps out of the bag storage unit 16. . Thereby, protection from the impact etc. which are applied to those of the neck part of the user who carried the backpack part 11 and its peripheral part is achieved. Further, the gas expansion bag 20 stored in the bag storage portion 21 provided in each of the waist belts 13L and 13R is rapidly expanded by the gas when the gas from the gas supply means 40 is supplied. The inflated state of jumping out of the bag storage unit 21 is taken. Thereby, protection from the impact etc. which are applied to those of the user's flank and the surrounding part of the user carrying the backpack 11 is achieved. Further, when the gas from the gas supply means 40 is supplied to the gas expansion bag 24 stored in the bag storage portion 25 provided in each of the shoulder belts 14L and 14R, the gas expansion bag 24 is rapidly expanded by the gas. The inflated state of jumping out of the bag storage unit 25 is taken. Thereby, the protection added to those of the chest of the user who carried the backpack part 11 and its surrounding part is achieved.

  Each of the bag storage portions 16, 21 and 25 is not shown in the figure, but is provided with a bag opening that can be easily opened and closed using, for example, a magic fastener (registered trademark) or the like. . As a result, when each of the gas expansion bags 28, 20 and 24 in the contracted state is rapidly expanded upon receiving the supply of gas, the bag opening provided in the bag storage portion 16, 21 or 25 is instantly opened. As the state, the inflated state of jumping out to the outside through the opened bag opening portion can be surely taken.

  In the backpack 11, two gas expansion bags 30 and 31 that are folded and contracted are disposed in the vertical direction on the main body side facing portion 11 </ b> B, and the main body 10 is detachably attached. It is done. For each of the gas expansion bags 30 and 31, gas from a gas supply means 40 described later is supplied, for example, through a gas passage (not shown) depending on the situation. Each of the gas expansion bags 30 and 31 to which the gas from the gas supply means 40 is supplied performs rapid expansion by the gas. Further, although not shown in the main body side facing portion 11B, for example, for causing each of the gas expansion bags 30 and 31 that rapidly expand upon receiving gas to jump out of the main body side facing portion 11B, for example, A magic fastener (registered trademark) or the like is used to provide a bag opening that can be easily opened and closed.

  The gas expansion bag 30 located on the upper side of the gas expansion bags 30 and 31 is rapidly expanded by the gas when the gas from the gas supply means 40 is supplied, and the main body side facing portion in the backpack 11. It is intended to protect the user's back part and the surrounding part from impacts applied to the back part of the user carrying the back part 11 from the bag 11B through the bag opening. The gas expansion bag 31 located on the lower side of the gas expansion bags 30 and 31 is rapidly expanded by the gas when the gas from the gas supply means 40 is supplied, and the main body side of the backpack 11 It protrudes outside through the opening part for bags from the opposing part 11B, and protects from the impact etc. which are added to those of a user's waist | hip | lumbar part which carried the backpack part 11, and its surrounding part.

  As shown in FIGS. 1 and 6, the main body 10 can be detached from the backpack 11. Therefore, the main body part 10 and the backpack part 11 are provided with connecting means 50 that detachably connect them so that the main body part 10 is detachably attached to the backpack part 11.

  The connecting means 50 has an annular elastic member 35 having a first open end 35A connected to the peripheral end of the main body 10 and a second open end 35B connected to the peripheral end of the backpack 11. And an engagement forming a plurality of hook mechanisms arranged at a predetermined distance from each other at a portion where the first opening end 35A of the annular elastic member 35 is connected to the peripheral edge of the main body 10 A plurality of hook mechanisms arranged with a predetermined distance between each other are formed on the member 37A and a portion where the second opening end 35B of the annular elastic member 35 is connected to the peripheral edge of the backpack 11. And the engaged member 37B. In the annular elastic member 35, an annular fold 35C is provided between the first opening end 35A and the second opening end 35B, and the first opening end 35A is sandwiched by the fold 35C. And the second opening end 35B are folded so as to be close to each other, the contracted state is taken, and the first opening end 35A and the second opening end 35B are mutually connected with the fold 35C interposed therebetween. The stretched state is taken by being stretched away.

  The connection between the peripheral edge of the main body 10 and the first opening end 35A of the annular elastic member 35 and the connection between the peripheral edge of the backpack 11 and the second opening end 35B of the annular elastic member 35 are as follows. These are performed by, for example, a fastener mechanism often called a chuck, a zipper or the like, and this fastener mechanism also constitutes the connecting means 50. For example, the fastener mechanism that connects the peripheral edge of the backpack 11 and the second open end 35B of the annular elastic member 35 includes an annular element 38A provided at the second open end 35B of the annular elastic member 35. And an annular element 38B disposed along the peripheral edge of the backpack 11. The annular element 38A and the annular element 38B are selectively engaged with and disengaged from each other. When taking the engaged state, the peripheral edge of the backpack 11 and the annular elastic member When the second open end 35B of the 35 is connected and disengaged, the connection between the peripheral end of the backpack 11 and the second open end 35B of the annular elastic member 35 is released. The fastener mechanism that connects the peripheral edge of the main body 10 and the first open end 35A of the annular elastic member 35 also has annular elements 39A and 39B, and the peripheral edge of the backpack 11 and the annular elastic member 35. It is comprised similarly to the fastener mechanism which connects the 2nd opening edge part 35B.

  A plurality of engaging members 37A arranged at a portion where the first opening end 35A of the annular elastic member 35 at the peripheral edge of the main body 10 is connected, and the annular elastic member 35 at the peripheral edge of the backpack 11 The plurality of engaged members 37 </ b> B disposed in the portion to which the second opening end 35 </ b> B is connected are the first opening end 35 </ b> A connected to the peripheral edge of the main body 10 and the backpack 11. An annular elastic member 35 in which the second opening end 35B is connected to the peripheral edge portion is brought into a contracted state, and the main body portion 10 is contracted to the main body portion side facing portion 11B in the backpack portion 11. As shown in FIG. 4, the corresponding ones are in a mutually engaged state so that they can be separated from each other. Thus, when the corresponding ones of the plurality of engaging members 37A and the plurality of engaged members 37B are in the mutually engaged state, as shown in FIG. 4, the main body 10 and the backpack 11 Are connected to each other by the connecting means 50 in a state in which the main body 10 is close to the backpack 11, and the main body 10 is attached to the backpack 11.

  Further, as shown in FIG. 6 or FIG. 7, when the corresponding members of the plurality of engaging members 37A and the plurality of engaged members 37B are in the mutually separated state, as shown in FIG. A first open end 35 </ b> A is connected to the peripheral edge of the main body 10, and an annular elastic member 35 having a second open end 35 </ b> B connected to the peripheral edge of the backpack 11 is extended. The main body 10 can be separated from the backpack 11, and the second opening end 35 </ b> B of the annular stretchable member 35 is connected to the peripheral edge of the backpack 11, and the first of the annular stretchable member 35 is connected. When the connection between the open end 35A and the main body 10 or both of them is released, the main body 10 can be removed from the backpack 11 as shown in FIG. 1 or FIG. 6, for example. Is done.

  The connection between the peripheral edge of the main body 10 and the first opening end 35A of the annular elastic member 35, and the connection between the peripheral edge of the backpack 11 and the second opening edge 35B of the annular elastic member 35. The fastener mechanisms that perform the connection may be configured by using what is often called a magic fastener (registered trademark), for example, instead of what is often called a chuck, a zipper, or the like.

  For example, a gas supply means 40 containing a gas cylinder filled with carbon dioxide gas is disposed in the main body side facing portion 11B of the backpack portion 11, and the gas supply means 40 is provided with a connecting portion 41A at the tip. The attached wire 41 is attached. Although not shown, the gas discharge port of the gas cylinder built in the gas supply means 40 is connected to the gas expansion bag 28 and the waist stored in the bag storage unit 16 provided in the backpack 11 through the gas passage. A gas expansion bag 20 stored in a bag storage section 21 provided in each of the belts 13L and 13R; a gas expansion bag 24 stored in a bag storage section 25 provided in each of the shoulder belts 14L and 14R; The gas expansion bags 30 and 31 are connected to the main body side facing portion 11B of the portion 11 respectively.

  Then, when a tensile force of a predetermined level or more is applied through the wire 41, the gas supply means 40 shifts the gas discharge port of the built-in gas cylinder from the closed state to the open state, and causes the gas from the gas cylinder to pass through the gas passage. Gas expansion bag 28 stored in a contracted state in a bag storage unit 16 provided in each of the gas expansion bag 28 and the waist belts 13L and 13R stored in a contracted state in a bag storage unit 16 provided in the section 11 The bag 20 and the shoulder belts 14 </ b> L and 14 </ b> R are contracted in the gas expansion bag 24 stored in a contracted state in a bag storage unit 25 provided in each of the shoulder belts 14 </ b> L and 14 </ b> R and the main body side facing portion 11 </ b> B of the backpack 11. It supplies to each of the gas expansion bag 30 and 31 which were arranged.

  The wire 41 attached to the gas supply means 40 has a tip 41A on a part of a frame provided in the motorcycle when the user carrying the backpack 11 rides on a motorcycle such as a motorcycle. It is detachably locked and connected to the motorcycle. Under such circumstances, when a user who rides a motorcycle encounters a disaster such as a fall and moves rapidly, the shoulder portion 11 carried by the user also moves rapidly, whereby the wire 41 is A transition from a relaxed state to a tension state occurs rapidly. At that time, a tensile force of a predetermined level or more is applied to the gas supply means 40 through the wire 41, and the gas discharge port of the gas cylinder in the gas supply means 40 shifts from the closed state to the open state. As a result, the gas supply means 40 has the gas expansion bag 28, the waist belt 13L, and the gas stored in the bag storage portion 16 provided in the backpack 11 in a contracted state through the gas passage. Gas stored in a contracted state in a bag storage unit 25 provided in each of the gas expansion bag 20 and the shoulder belts 14L and 14R stored in a contracted state in a bag storage unit 21 provided in each of 13Rs The expansion bag 24 and the gas expansion bags 30 and 31 disposed in a contracted state on the main body side facing portion 11B of the backpack 11 are placed in a state of being supplied to each.

  Each of the gas expansion bags 28, 20, 24, 30 and 31 to which gas from a gas cylinder incorporated in the gas supply means 40 is supplied is rapidly expanded upon receiving the gas, and the bag storage portions 16, 21 and 25 Furthermore, it protrudes outside from the main body side facing portion 11B of the backpack 11 through the bag opening.

  That is, the wire 41 is brought into a contracted state in the bag storage portion 16 provided in the backpack portion 11 with the gas from the gas cylinder built in the gas supply means 40 in response to the sudden movement of the backpack portion 11. The gas expansion bag 28 and the shoulder belts 14L and 14R, which are stored in a contracted state in the bag storage portions 21 provided in the gas expansion bag 28 and the waist belts 13L and 13R, respectively. A state in which the gas expansion bag 24 stored in the contracted state in the storage unit 25 and a gas expansion bag 30 and 31 disposed in the contracted state in the main body side facing portion 11B of the backpack 11 are supplied to the gas expansion bag 24, respectively. The gas supply control means is formed to eliminate the problem.

  A rucksack according to any one of claims 1 to 10 in the claims of the present application provided with a connecting means 50 including the annular elastic member 35 as described above. In one example, that is, in the first embodiment, each of the gas expansion bags 20, 24, 28, 30 and 31 forms a gas expansion means that shifts from a contracted state to an expanded state by supplying gas. Further, the gas expansion means formed by such gas expansion bags 20, 24, 28, 30 and 31, the gas supply means 40 incorporating the gas cylinder, and the gas supply formed by the wire 41 attached to the gas supply means 40 A gas expansion protection system is constituted by the portion including the control means.

  And when Example 1 is carried and carried by the user, for example, if the backpack 11 arranged on the user's back moves rapidly, the gas expansion protection system is activated. At that time, a tensile force of a predetermined level or more is applied to the gas supply means 40 through the wire 41 in response to the rapid movement of the backpack 11, and the gas discharge port of the gas cylinder in the gas supply means 40 is opened from the closed state to the open state. As described above, the gas supply means 40 expands and stores the gas from the gas cylinder built in the bag storage portion 16 provided in the backpack portion 11 in a contracted state through the gas passage. The bag 28 and the waist belts 13L and 13R are contracted in the bag storage part 21 provided in each of the waist belts 13L and 13R. The gas storage bag 20 and the bag storage part 25 provided in each of the shoulder belts 14L and 14R are contracted. The gas expansion bag 24 and the gas expansion bag disposed in a contracted state on the main body side facing portion 11B of the backpack 11 are stored. Tsu is placed in a state to be supplied to each of the grayed 30 and 31.

  Thereby, each of the gas expansion bags 28, 20, 24, 30 and 31 is rapidly expanded by the supplied gas. At this time, as shown in FIG. 4, the main body 10 and the backpack 11 are When the main body 10 is interconnected in the state of being close to the backpack 11 by the connecting means 50 and the main body 10 is attached to the backpack 11, the following operation is performed. That is, as shown in FIG. 8, the gas inflation bag 28 surely performs rapid inflation that jumps out through the bag opening provided in the bag storage portion 16, so that the neck of the user carrying the backpack 11 is back. The two gas inflatable bags 20 are surely rapidly inflated to the outside through the bag opening provided in the bag storage portion 21, and the backpack 11 is This protects the left and right abdomen of the user carrying the back and the surrounding area, and ensures that each of the two gas inflatable bags 24 rapidly expands to the outside through the bag opening provided in the bag storage unit 25. In this way, the left and right chests of the user carrying the backpack 11 and the surrounding area are protected. Further, the gas expansion bags 30 and 31 press the main body 10 against the back side of the backpack 11 with rapid expansion to form a plurality of hook mechanisms, and a plurality of engagement members that are in an interengaged state. The direction in which the main body portion 10 is separated from the backpack portion 11 while causing the corresponding members of 37A and the plurality of engaged members 37B to be separated from each other and causing the annular elastic member 35 to transition from the contracted state to the extended state. Move to. Thereby, each of the gas expansion bags 30 and 31 has a bag opening provided in the body portion side facing portion 11B of the backpack portion 11 between the main body portion 10 and the backpack portion 11 as shown in FIG. The rapid expansion that jumps out to the outside through the part is surely performed without being obstructed by the main body part 10, and the back part, waist part, and surrounding parts of the user carrying the back part 11 are protected.

  Further, when each of the gas expansion bags 28, 20, 24, 30 and 31 is rapidly expanded by the supplied gas, for example, as shown in FIG. 1 or FIG. When in the removed state, the following operation is performed. That is, as shown in FIG. 9, the gas inflation bag 28 surely performs rapid inflation that jumps out through the bag opening provided in the bag storage portion 16, so that the neck of the user carrying the backpack 11 is back. The two gas inflatable bags 20 are surely rapidly inflated to the outside through the bag opening provided in the bag storage portion 21, and the backpack 11 is This protects the left and right abdomen of the user carrying the back and the surrounding area, and ensures that each of the two gas inflatable bags 24 rapidly expands to the outside through the bag opening provided in the bag storage unit 25. The left and right chests of the user carrying the backpack 11 and the surrounding area are protected, and each of the gas expansion bags 30 and 31 is connected to the main body side of the backpack 11. The rapid expansion that jumps out through the bag opening provided in the portion 11B without any interference from other parts is carried out without fail, and the back, waist and surroundings of the user carrying the backpack 11 The part will be protected.

  In addition, although illustration is abbreviate | omitted, in each of the gas expansion bags 28, 20, 24, 30 and 31, one or more for exhausting the gas supplied after gas was supplied and rapidly expanded. A small hole is provided.

  10, FIG. 11 and FIG. 12 show an example (Example 2) of a rucksack according to the invention described in claim 11 in the claims of the present application.

  In the example shown in FIGS. 10, 11, and 12, the main body portion that accommodates articles corresponding to the main body portion 10 in the examples shown in FIGS. It is divided into parts 51 and 52. Further, as an alternative to the connecting means 50 including the annular elastic member 35 in the example shown in FIGS. 1, 2 and 3, two connecting means including the elastic members 54 and 55, respectively. 60 and 61 are provided. Other parts and members in the examples shown in FIGS. 10, 11 and 12 are substantially the same as those in the examples shown in FIGS. In the example shown in the head 12, the parts and members similar to the parts and members in the examples shown in FIGS. 1, 2, and 3 are shown in FIGS. 1, 2, and 3. In the example, the same reference numerals are assigned to the respective parts and the respective members, and redundant description thereof is omitted.

  In the example shown in FIGS. 10, 11, and 12, the main body portion that is divided into two article housing portions 51 and 52 can be attached to and detached from the main body side facing portion 11 </ b> B of the backpack 11. It is attached. And the article accommodating parts 51 and 52 which comprise a main-body part shall be removable from the backpack part 11 as FIG. 10 shows, or as FIG. 13 shows. For this reason, the article storage section 51 and the backpack section 11 are provided with connecting means 60 that removably interconnect them, thereby detachably attaching the article storage section 51 to the backpack section 11. The accommodating part 52 and the backpack part 11 are provided with a connecting means 61 that removably connects them so that the article container 52 is detachably attached to the backpack part 11.

  The connecting means 60 includes a telescopic member 54 having a first end 54 </ b> A coupled to the article storage unit 51 and a second end 54 </ b> B coupled to the backpack 11, and the telescopic member 54 in the article storage unit 51. The engaging member 56A that forms a plurality of hook mechanisms arranged at a predetermined distance from each other at the portion to which the first end portion 54A is connected, and the second member of the telescopic member 54 in the backpack 11 A portion to which the end portion 54B is connected includes an engaged member 56B that forms a plurality of hook mechanisms arranged with a predetermined distance between each other. In the elastic member 54, an annular fold 54C is provided between the first end 54A and the second end 54B, and the first end 54A and the second end 54C are sandwiched between the fold 54C. When the end portion 54B is folded so as to be close to each other, the contracted state is taken, and the first end portion 54A and the second end portion 54B are stretched so as to be separated from each other across the fold line 54C. The stretched state is taken.

  The connection between the article storage unit 51 and the first end 54A of the expansion / contraction member 54 and the connection between the backpack 11 and the second end 54B of the expansion / contraction member 54 are called, for example, a chuck, a zipper, or the like. The fastener mechanism is often used, and this fastener mechanism also constitutes the connecting means 60. For example, the fastener mechanism that connects the backpack 11 and the second end 54B of the expansion / contraction member 54 includes an element 58A provided at the second end 54B of the expansion / contraction member 54 and an element 58B disposed at the backpack 11. It is comprised including. The element 58A and the element 58B are selectively engaged with and disengaged from each other. When the element 58A and the element 58B are engaged with each other, the back end portion 11 and the second end portion of the expansion / contraction member 54 are used. When connecting 54B and taking a non-engagement state, connection with the backpack part 11 and the 2nd end part 54B of the expansion-contraction member 54 is cancelled | released. The fastener mechanism that connects the article accommodating portion 51 and the first end portion 54A of the elastic member 54 also has elements 59A and 59B, and connects the backpack 11 and the second end portion 54B of the elastic member 54. It is comprised similarly to a fastener mechanism.

  A plurality of engaging members 56A arranged at a portion to which the first end portion 54A of the elastic member 54 in the article accommodating portion 51 is connected, and a second end portion 54B of the elastic member 54 in the backpack portion 11 are connected. The plurality of engaged members 56 </ b> B arranged in the portion contracts to an elastic member 54 in which the first end portion 54 </ b> A is connected to the article accommodating portion 51 and the second end portion 54 </ b> B is connected to the backpack portion 11. When the state is taken and the article accommodating portion 51 is brought close to the backpack portion 11 with the elastic member 54 in a contracted state interposed therebetween, the corresponding ones are in an mutually engaged state so as to be detachable from each other. . In this way, when the corresponding ones of the plurality of engaging members 56A and the plurality of engaged members 56B are in the mutually engaged state, as shown in FIG. 12, the article accommodating portion 51 and the backpack portion 11 are connected to each other by the connecting means 60 in a state where the article accommodating portion 51 is close to the backpack portion 11, and the article accommodating portion 51 is attached to the backpack portion 11.

  Further, as shown in FIG. 10 or FIG. 13, when the corresponding members of the plurality of engaging members 56A and the plurality of engaged members 56B are in the mutually separated state, as shown in FIG. The stretchable member 54 in which the first end 54A is connected to the article storage unit 51 and the second end 54B is connected to the backpack 11 is brought into an extended state so that the article storage 51 is removed from the backpack 11. Further, the second end 54B of the elastic member 54 and the backpack 11 can be connected to each other, the first end 54A of the elastic member 54 and the article storage unit 51 can be connected, or they can be separated from each other. Under the condition that both are released, for example, as shown in FIG. 13, the article storage portion 51 can be detached from the backpack portion 11.

  In addition, the fastener mechanism which performs connection with the 1st end part 54A of the article | item accommodating part 51 and the expansion-contraction member 54, and connection with the back end part 11 and the 2nd end part 54B of the expansion-contraction member 54, respectively, is each, for example Instead of what is often called a chuck, a zipper, or the like, what is often called a magic fastener (registered trademark) or the like may be used.

  Further, the connecting means 61 includes an elastic member 55 having a first end portion 55A connected to the article accommodating portion 52 and a second end portion 55B connected to the backpack 11, and an expansion / contraction in the article accommodating portion 52. An engagement member 57A that forms a plurality of hook mechanisms arranged at a predetermined distance from each other at a portion to which the first end portion 55A of the member 55 is connected, and a first extension member 55 of the backpack 11. The portion to which the two end portions 55B are connected includes an engaged member 57B that forms a plurality of hook mechanisms arranged with a predetermined distance between each other. In the telescopic member 55, an annular fold 55C is provided between the first end 55A and the second end 55B, and the first end 55A and the second end 55C are sandwiched between the fold 55C. When the end portion 55B is folded so as to be close to each other, the contracted state is taken, and the first end portion 55A and the second end portion 55B are stretched so as to be separated from each other across the fold line 55C. The stretched state is taken.

  The connection between the article storage unit 52 and the first end 55A of the expansion / contraction member 55 and the connection between the backpack 11 and the second end 55B of the expansion / contraction member 55 are referred to as, for example, a chuck and a zipper, respectively. The fastener mechanism is often used, and this fastener mechanism also constitutes the connecting means 61. For example, the fastener mechanism that connects the backpack 11 and the second end 55B of the expansion / contraction member 55 includes an element 62A provided at the second end 55B of the expansion / contraction member 55 and an element 62B disposed at the backpack 11. It is comprised including. The element 62A and the element 62B are selectively engaged with and disengaged from each other. When the element 62A and the element 62B are engaged with each other, the back end portion 11 and the second end portion of the expansion / contraction member 55 are used. When connecting 55B and taking a disengaged state, the connection between the backpack 11 and the second end 55B of the telescopic member 55 is released. The fastener mechanism that connects the article accommodating portion 52 and the first end portion 55A of the expansion / contraction member 55 also has elements 63A and 63B, and connects the backpack 11 and the second end portion 55B of the expansion / contraction member 55. It is comprised similarly to a fastener mechanism.

  A plurality of engaging members 57A arranged at a portion where the first end portion 55A of the expansion / contraction member 55 in the article accommodating portion 52 is connected, and a second end portion 55B of the expansion / contraction member 55 in the backpack portion 11 are connected. The plurality of engaged members 57 </ b> B arranged in the portion are contracted to the elastic member 55 in which the first end portion 55 </ b> A is connected to the article accommodating portion 52 and the second end portion 55 </ b> B is connected to the backpack portion 11. When the state is taken and the article accommodating portion 52 is brought close to the backpack portion 11 with the elastic member 55 in a contracted state interposed therebetween, the corresponding ones are in an mutually engaged state so that they can be separated from each other. . In this way, when the corresponding members of the plurality of engaging members 57A and the plurality of engaged members 57B are in the mutually engaged state, as shown in FIG. 11 are connected to each other by the connecting means 61 in a state in which the article storage portion 52 is close to the backpack portion 11, and the article storage portion 52 is attached to the backpack portion 11.

  Further, as shown in FIG. 10 or FIG. 13, when the corresponding members of the plurality of engaging members 57A and the plurality of engaged members 57B are in the mutually separated state, as shown in FIG. The stretchable member 55 having the first end 55A connected to the article storage 52 and the second end 55B connected to the backpack 11 is brought into an extended state so that the article storage 52 is removed from the backpack 11. Further, the second end portion 55B of the elastic member 55 and the backpack 11 can be connected, the first end portion 55A of the elastic member 55 and the article storage portion 52, or the like. Under the condition that both are released, for example, as shown in FIG. 13, the article storage portion 52 can be removed from the backpack portion 11.

  In addition, the fastener mechanism which performs connection with the 1st end part 55A of the article | item accommodating part 52 and the expansion-contraction member 55, and connection with the back end part 11 and the 2nd end part 55B of the expansion-contraction member 55, respectively, is each, for example, Instead of what is often called a chuck, a zipper, or the like, what is often called a magic fastener (registered trademark) or the like may be used.

  The article accommodating portion 51 and the article accommodating portion 52 are arranged at the lower end portion of the article accommodating portion 51, and are arranged at the upper end portion of the article accommodating portion 52, and are mutually engaged with the element 53A as necessary. For example, a fastener mechanism that is often referred to as a chuck, a zipper, or the like is provided. This fastener mechanism is configured to interconnect the article accommodating portion 51 and the article accommodating portion 52 by placing the element 53A and the element 53B in the mutually engaged state.

  The fastener mechanism for interconnecting the article accommodating portion 51 and the article accommodating portion 52 is also used, for example, instead of what is often called a chuck, a zipper or the like, and is often called a magic fastener (registered trademark) or the like. May be configured.

  As described above, the claims in the claims of the present application are provided with the connecting means 60 including the article accommodating portions 51 and 52 and the elastic member 54 and the connecting means 61 including the elastic member 55. In the example of the rucksack according to the invention described in item 11, that is, in the second embodiment, any one of the following first to fourth states is taken.

  First state: a state in which both the article accommodating portions 51 and 52 are attached to the backpack 11. Under this state, the article accommodating portion 51 and the article accommodating portion 52 can be interconnected by the fastener mechanism constituted by the element 53A and the element 53B.

  Second state: a state in which the article storage unit 51 is attached to the backpack 11 and the article storage 52 is removed from the backpack 11.

  Third state: a state in which the article storage unit 52 is attached to the backpack 11 and the article storage 51 is removed from the backpack 11.

  Fourth state: a state in which both the article accommodating portions 51 and 52 are removed from the backpack portion 11.

  For example, when the backpack 11 disposed on the back of the user moves abruptly while the second embodiment is being carried by the user, the gas expansion bags 20, 24, 28, A gas expansion protection system comprising gas expansion means formed by 30 and 31, gas supply means 40 incorporating a gas cylinder, and gas supply control means formed by a wire 41 attached to the gas supply means 40. Operate. At that time, a tensile force of a predetermined level or more is applied to the gas supply means 40 through the wire 41 in response to the rapid movement of the backpack 11, and the gas discharge port of the gas cylinder in the gas supply means 40 is opened from the closed state to the open state. As described above, the gas supply means 40 expands and stores the gas from the gas cylinder built in the bag storage portion 16 provided in the backpack portion 11 in a contracted state through the gas passage. The bag 28 and the waist belts 13L and 13R are contracted in the bag storage part 21 provided in each of the waist belts 13L and 13R. The gas storage bag 20 and the bag storage part 25 provided in each of the shoulder belts 14L and 14R are contracted. The gas expansion bag 24 and the gas expansion bag disposed in a contracted state on the main body side facing portion 11B of the backpack 11 are stored. Tsu is placed in a state to be supplied to each of the grayed 30 and 31.

  Thereby, each of the gas expansion bags 28, 20, 24, 30 and 31 is rapidly expanded by the supplied gas. At that time, when the above-described first state is taken, the following operation is performed. Is done. That is, as shown in FIG. 14, the gas inflation bag 28 surely performs rapid inflation that jumps out through the bag opening provided in the bag storage portion 16, and the neck of the user carrying the backpack 11 is carried on the neck. The two gas inflatable bags 20 are surely rapidly inflated to the outside through the bag opening provided in the bag storage portion 21, and the backpack 11 is This protects the left and right abdomen of the user carrying the back and the surrounding area, and ensures that each of the two gas inflatable bags 24 rapidly expands to the outside through the bag opening provided in the bag storage unit 25. In this way, the left and right chests of the user carrying the backpack 11 and the surrounding area are protected. Further, the gas expansion bags 30 and 31 press both the article storage portions 51 and 52 against the back side of the backpack 11 with rapid expansion, thereby forming a plurality of hook mechanisms. The corresponding ones of the plurality of engaging members 56A and the plurality of engaged members 56B in FIG. 2 are in the mutually disengaged state, and are in the mutually engaged state as forming a plurality of hook mechanisms. Corresponding members in the plurality of engaging members 57A and the plurality of engaged members 57B are also brought into the mutual detachment state, and both the elastic members 54 and 55 are shifted from the contracted state to the extended state. Both the accommodating parts 51 and 52 are moved in the direction away from the backpack part 11. Accordingly, as shown in FIG. 14, the gas expansion bags 30 and 31 are provided on the main body side facing portion 11 </ b> B of the backpack portion 11 between the article storage portions 51 and 52 and the backpack portion 11. The rapid expansion that jumps out through the bag opening is surely performed without being obstructed by the article accommodating portions 51 and 52, thereby protecting the back, waist, and surrounding portions of the user carrying the backpack 11 on the back. It will be a thing.

  Further, when each of the gas expansion bags 28, 20, 24, 30 and 31 is rapidly expanded by the supplied gas and the above-described second state or third state is taken, the following is performed. Operation is performed. That is, the gas inflation bag 28 surely performs rapid inflation that jumps out through the bag opening provided in the bag storage portion 16 to protect the neck of the user carrying the backpack 11 and the surrounding area. The right and left abdomen of the user carrying the backpack 11 is ensured by rapidly expanding each of the two gas inflatable bags 20 through the bag opening provided in the bag storage unit 21. As a result, each of the two gas inflatable bags 24 is surely rapidly expanded so that each of the two gas inflatable bags 24 jumps out through the bag opening provided in the bag storage portion 25 to carry the backpack 11. It is intended to protect the left and right chests of the user and the surrounding area. Further, the gas expansion bags 30 and 31 press the article accommodating part 51 or the article accommodating part 52 to the back side of the backpack 11 with rapid expansion, thereby forming a plurality of hook mechanisms, and are mutually engaged. The corresponding ones of the plurality of engaging members 56A and the plurality of engaged members 56B that are in a state are brought into a mutual disengagement state, or a plurality of hook mechanisms are formed, so that they are in a mutual engagement state. The corresponding members of the plurality of engaging members 57A and the plurality of engaged members 57B are brought into a mutually separated state, and the elastic member 54 or the elastic member 55 is shifted from the contracted state to the extended state. The container 51 or the article container 52 is moved away from the backpack 11. Thereby, each of the gas expansion bags 30 and 31 passes through the bag opening provided in the main body side facing portion 11B of the backpack 11 between the article storage 51 or the article storage 52 and the backpack 11. The rapid expansion that jumps out to the outside is surely performed without being obstructed by the article accommodating part 51 or the article accommodating part 52, and the back part, the waist part of the user carrying the back carrying part 11 and the surrounding parts thereof are protected. Become.

  Further, when each of the gas expansion bags 28, 20, 24, 30 and 31 is rapidly expanded by the supplied gas and the above-described fourth state is taken, the patent of the present application already described is described. An example of the rucksack according to any one of claims 1 to 10 in the claims, that is, the operation when the main body 10 is removed from the backpack 11 in the first embodiment. The same operation is performed.

  In each of the first embodiment and the second embodiment described above, the neck of the user carrying the backpack 11 and its surrounding portion, the chest and its surrounding portion, the flank and its surrounding portion, the back portion and its surrounding portion. In order to protect all of the waist and its surrounding parts, a plurality of gas expansion bags 28, 20, 24 are provided on the backpack 11, the left and right waist belts 13L and 13R, and the left and right shoulder belts 14L and 14R. , 30 and 31 in order to protect at least one of the neck of the user carrying the back 11 and the surrounding portion thereof, the back and the surrounding portion thereof, and the waist and the surrounding portion thereof. The gas expansion bag provided may be appropriately selected. Further, the number and arrangement position of the gas supply means 40 may be appropriately selected according to the size and number of gas expansion bags provided. In that case, it is considered that the gas supply control means is formed, and the plurality of wires respectively attached to the plurality of gas supply means are, for example, that the respective distal end portions are combined into one. It is done.

  Further, each of the annular elastic member 35 and the elastic members 54 and 55 is selectively taken in a folded contracted state and an extended state released from the folded state. The stretchable member 35, and each of the stretchable members 54 and 55 are made of a stretchable material such as knit, and the stretchable material selectively takes the contracted state and the stretched state. May be. Furthermore, the wire 41 that is in a state in which the gas from the gas supply means 40 is supplied to each of the gas expansion bags 28, 20, 24, 30, and 31 is not connected to a motorcycle or the like but is necessary. Accordingly, for example, the user may be pulled by the user carrying the backpack 11 to cause the gas supply means 40 to exert a tensile force of a predetermined level or more.

  The rucksack according to the invention described in any one of claims 1 to 10 in the claims of the present application as described above is simulated when the user is on a motorcycle, for example. When various disasters such as disasters are encountered, the user can be protected widely so that the user can be protected.

It is a perspective view showing an example of a rucksack according to the invention described in any one of claims 1 to 10 in the claims of the present application. FIG. 2 is a rear view for explaining the example shown in FIG. 1. It is a perspective view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a front view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a perspective view which shows an example of the rucksack which concerns on the invention described in Claim 11 in the claim of this application. It is a rear view with which the example shown by FIG. 10 is provided. It is a side view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG. It is a side view with which it uses for description of the example shown by FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10, ... Main-body part, 11 ... Backpack part, 13L, 13R ... Waist belt, 14L, 14R ... Shoulder belt, 16, 21, 25 ... Bag storage part, 20, 24, 28 , 30, 31 ... gas expansion bag, 35 ... annular expansion / contraction member, 37A, 56A, 57A ... engagement member, 37B, 56B, 57B ... engaged member, 38A, 38B, 39A, 39B ... annular element, 40 ... gas supply means, 41 ... wire, 50, 60, 61 ... connection means, 51, 52 ... article accommodating part 52, 53A, 53B, 58A, 58B , 59A, 59B, 62A, 62B, 63A, 63B... Element, 54, 55.

Claims (11)

A main body for storing articles;
A shoulder belt is provided, and the back part to which the main body part is detachably attached;
Gas expansion means that is disposed in the backpack and that transitions from a contracted state to an expanded state by supplying gas;
Gas supply means for taking a state of supplying gas to the gas expansion means according to the situation of the backpack;
The main body is attached to the backpack by detachably interconnecting the main body and the backpack, and supplied from the gas supply means while the main body and the backpack are in communication with each other. When the gas expansion means is in an expanded state by the gas to be connected, the connection means that enables the main body portion to move in a direction away from the backpack,
Rucksack configured with.   The rucksack according to claim 1, further comprising gas supply control means for causing the gas supply means to take a state of supplying gas to the gas expansion means in response to a sudden movement of the backpack.   2. The rucksack according to claim 1, wherein a waist belt is disposed on the backpack in addition to the shoulder belt.   The said gas expansion means is distribute | arranged to the site | part which can protect at least 1 of the back part, the neck part, the waist | lumbar part, the flank part, and the chest part of the user who bears the said backpack part. Rucksack.   The rucksack according to claim 3, wherein the gas expansion means is arranged on at least one of the shoulder belt and the waist belt in addition to the backpack.   6. The rucksack according to claim 5, wherein the gas expansion means is disposed in at least one of a back portion in contact with the main body portion in the backpack and a peripheral portion of the back portion.   The connection means includes an engaging member that interconnects the main body and the backpack by detachably engaging the main body with the backpack. The rucksack according to 1.   The connecting means includes an expansion and contraction connecting member that takes a folded state when the main body is brought close to the backpack and takes an extended state when the main body is separated from the backpack. 7. Rucksack according to 7.   9. The rucksack according to claim 8, wherein the expansion and contraction connecting member is provided on the main body and is detachably engaged with the backpack.   The rucksack according to claim 8, wherein the expansion and contraction connecting member is detachably engaged with each of the main body and the backpack. The rucksack according to claim 1, wherein the main body is divided into a plurality of article storage portions.

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