Backpack device and back frame

Abstract

The invention provides a technology capable of reducing the load applied to the waist of a user wearing a backpack device. The backpack device includes: a back frame to be worn by a user; and the equipment is mounted on the back frame. The back frame comprises: a pair of shoulder straps for the user to hang on both shoulders; a back plate on which the pair of shoulder straps is mounted and on which a device is mounted; the waistband is wound on the waist of the user; and the connecting mechanism is used for connecting the back plate with the waistband. The connecting mechanism is provided with an elastic member having a bending stiffness smaller than that of the back plate. A force applied to the connection mechanism from one of the back plate and the waistband is transmitted to the other of the back plate and the waistband via the elastic member.

Description

Technical Field

[0001] The technology disclosed in this specification relates to a backpack device and a backpack frame. Background Art

[0002] In the United States Patent Application Publication No. 2016 / 0255942, a backpack device including a back frame for a user to wear and a device mounted on the back frame is disclosed. The back frame includes: a pair of shoulder straps for the user to hang on both shoulders; a back plate for the pair of shoulder straps to be mounted and for the device to be mounted; a waist belt for the user to wrap around the waist; and a connecting mechanism that connects the back plate and the waist belt. The connecting mechanism has a hinge that connects the waist belt to the back plate in a manner that allows it to rotate around an axis in the left-right direction. Summary of the invention

[0003] Problem that the invention aims to solve

[0004] In the backpack device disclosed in U.S. Invention Patent Application Publication No. 2016 / 0255942, a hinge is provided between the back plate and the waist belt. Therefore, when the user's posture changes from an upright posture to a forward bending posture or a backward bending posture, the back plate and the waist belt respectively move in accordance with the change in the user's posture. However, in this structure, since a large load is applied to the user's waist when the user is in a forward bending posture, the burden applied to the user's waist may increase. In this specification, a technology capable of reducing the burden applied to the waist of a user wearing a backpack device is provided.

[0005] Solutions for solving problems

[0006] The backpack device disclosed in this specification includes: a backpack frame for a user to wear; and a device mounted on the backpack frame. The backpack frame includes: a pair of shoulder straps for the user to hang on both shoulders; a back plate on which the pair of shoulder straps and the device are mounted; a waist belt for the user to wrap around the waist; and a connecting mechanism that connects the back plate and the waist belt. The connecting mechanism includes an elastic member having a bending rigidity smaller than that of the back plate. The force applied to the connecting mechanism from one of the back plate and the waist belt is transmitted to the other of the back plate and the waist belt via the elastic member.

[0007] The backpack disclosed in this specification is worn by a user to carry a load. The backpack includes: a pair of shoulder straps for the user to hang on both shoulders; a back plate on which the pair of shoulder straps are mounted and the load is mounted in a detachable manner; a waist belt for the user to wrap around the waist; and a connecting mechanism that connects the back plate and the waist belt. The connecting mechanism includes an elastic member having a bending rigidity smaller than that of the back plate. A force applied to the connecting mechanism from one of the back plate and the waist belt is transmitted to the other of the back plate and the waist belt via the elastic member.

[0008] According to the above structure, when the user's posture changes, the elastic member deforms, and the back plate and the waist belt move respectively to follow the change in the user's posture. Moreover, when the user takes a forward bending posture, the back plate is lifted relative to the waist belt by the elastic restoring force generated by the elastic member. Specifically, the back plate is lifted relative to the waist belt with the vicinity of the user's shoulders as a fulcrum. As a result, instead of increasing the load applied to the user's shoulders, the load applied to the user's waist is reduced. Therefore, according to the above structure, the burden applied to the waist of the user wearing the backpack device (or back frame) can be reduced.

[0009] Note that the term "elastic member having a bending rigidity smaller than that of the back plate" in this specification should be understood as "the elastic member includes a portion having a smaller bending rigidity than the portion of the back plate having the smallest bending rigidity". BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a diagram of the backpack device 2 according to the embodiment as viewed from the upper left front.

[0011] Figure 2 This is a diagram of the power supply device 6 of the backpack equipment 2 according to the embodiment as viewed from the lower right front.

[0012] Figure 3 This is a diagram of the back plate 12 of the backpack device 2 according to the embodiment as viewed from the upper right rear.

[0013] Figure 4 This is a diagram showing the upper portion of the backpack device 2 of the embodiment as viewed from the upper right rear.

[0014] Figure 5 This is a diagram of the back plate 12 of the backpack device 2 according to the embodiment as viewed from the upper left front.

[0015] Figure 6 It is a cross-sectional view showing the structure of the locking mechanism 68 and its vicinity of the backpack equipment 2 according to the embodiment.

[0016] Figure 7This is a view showing the lower portion of the backpack device 2 of the embodiment and the bracket member 10 as viewed from the right.

[0017] Figure 8 It is a cross-sectional view showing the structure of the backpack device 2 in the embodiment and its vicinity.

[0018] Fig. 9 It is an exploded view showing the structure of the backpack equipment 2 in the embodiment and its vicinity.

[0019] Fig.10 This is a diagram showing the elastic member 84 of the backpack device 2 according to the embodiment as viewed from the front.

[0020] Fig.11 The diagram shows the elastic member 84 of the backpack equipment 2 according to the embodiment in a state of being attached to the hip belt 18 .

[0021] Fig.12 This is a diagram of the bracket member 10 of the backpack device 2 according to the embodiment as viewed from the upper right rear.

[0022] Fig.13 It is an exploded view showing the structure of the backpack equipment 2 in the embodiment and its vicinity of the bracket member 10 .

[0023] Fig.14 This is a diagram showing the lower portion of the backpack device 2 of the embodiment and the bracket member 10 as viewed from the left.

[0024] Fig.15 This is a diagram showing the bracket member 10 of the backpack equipment 2 according to the embodiment as viewed from above. DETAILED DESCRIPTION

[0025] Representative and non-limiting specific examples of the present invention are described in detail below with reference to the accompanying drawings. This detailed description is intended only to show the details of the preferred examples for implementing the present invention to those skilled in the art, and is not intended to limit the scope of the present invention. In addition, the disclosed additional features and technical solutions can be used separately or together with other features and technical solutions to provide further improved backpack devices and back frames.

[0026] In addition, the combination of features and processes disclosed in the following detailed description is not necessary for practicing the present invention in the broadest sense, but is only recorded for the purpose of specifically illustrating the representative specific examples of the present invention. Furthermore, when providing additional and useful embodiments of the present invention, the various features of the following representative specific examples and the various features described in the claims do not necessarily have to be combined in the specific examples or in the order in which they are described.

[0027] Different from the structures of the features described in the embodiments and / or claims, all the features described in this specification and / or claims are intended to be disclosed individually and independently of each other as original disclosures and limitations on the specific matters described in the claims. In addition, all numerical ranges and records involving groups or groups are intended to disclose their intermediate structures as original disclosures and limitations on the specific matters described in the claims.

[0028] In one or more embodiments, the elastic member may be arranged in front of the front surface of the back plate.

[0029] According to the above structure, since the elastic member is located in front of the front surface of the back plate, the back plate is separated backward relative to the waist belt by the elastic member, thereby generating a gap between the user's back and the back plate, thereby improving the air permeability between the user's back and the back plate.

[0030] In one or more embodiments, the elastic member may also include: a plate portion, which extends along the rear surface of the waist belt and is installed on the waist belt in a manner that does not change its posture relative to the waist belt; a fastening portion, which is arranged at a position farther rearward than the rear surface of the plate portion and is fastened to the front surface of the back plate using a prescribed fastener; and a connecting portion, which connects the plate portion and the fastening portion.

[0031] According to the above structure, the back plate is separated backward relative to the waist belt by the elastic member, thereby generating a gap between the user's back and the back plate, thereby improving the air permeability between the user's back and the back plate.

[0032] In one or more embodiments, the fastening portion may be arranged above the upper end of the plate portion.

[0033] According to the above structure, compared with the case where the fastening part is located below the upper end of the plate part, the gap between the user's back and the back plate becomes larger, thereby more significantly improving the air permeability between the user's back and the back plate.

[0034] In one or more embodiments, the connecting portion may also include a connecting surface, which is connected to the front surface of the plate portion and extends upward from the upper end of the plate portion. The connecting surface may also include a curved surface, which is curved in a manner that moves away from an imaginary plane formed by virtually extending the front surface of the plate portion as it moves away from the upper end of the plate portion.

[0035] Since the fastening portion is arranged above the upper end of the plate portion, the connection portion sometimes protrudes above the upper end of the waist belt. In this case, when the user uses the backpack device, it is expected that the front surface of the connection portion (i.e., the connection surface) hits the user's waist or back. If the front surface of the connection portion hits the user's waist or back, there is a possibility of causing discomfort to the user. According to the above-mentioned structure, the front surface of the connection portion includes a curved surface that bends backward as it goes upward. Therefore, it is difficult for the front surface of the connection portion to hit the user's waist or back. Therefore, it is possible to suppress the discomfort caused to the user.

[0036] In one or more embodiments, when viewed from the front, the left-right width of the connecting surface may also decrease monotonically as it moves away from the upper end of the plate portion.

[0037] If the left-right width of the connecting surface increases monotonically as it moves away from the upper end of the plate portion, there is a possibility that there will be insufficient space for arranging components different from the elastic member. According to the above structure, since the left-right width of the connecting surface decreases monotonically as it moves away from the upper end of the plate portion, it is possible to suppress the insufficient space for arranging components different from the elastic member.

[0038] In one or more embodiments, the connection portion may further include a recessed portion formed by recessing the connection surface from the front toward the rear. The fastening portion may be provided at the bottom of the recessed portion.

[0039] According to the above configuration, the fastener used to fasten the fastening portion can be retracted into the recessed portion, thereby preventing the user from accidentally touching the fastener.

[0040] In one or more embodiments, the elastic member may further include: a contact surface that contacts the front surface of the back plate; and a guide protrusion that protrudes to a position behind the contact surface. The back plate may also include a guide hole that receives the guide protrusion.

[0041] According to the above configuration, it is possible to suppress the elastic member from moving in the up-down, left-right direction relative to the back plate. Thus, the elastic member can be positioned relative to the back plate in the up-down, left-right direction.

[0042] In one or more embodiments, when viewed from the side, the back plate may have a shape that is warped toward the rear at a portion below a lower end of the fastening portion.

[0043] When the user uses the backpack, it is expected that the waist belt moves backward and hits the back plate. If the waist belt hits the back plate, there is a possibility that the user wearing the backpack will feel uncomfortable. According to the above structure, since the back plate is warped to the rear side, it is difficult for the waist belt to hit the back plate. This can suppress the discomfort caused to the user.

[0044] In one or more embodiments, the back panel may also include: a back panel main body, on which the device is installed in a loadable and detachable manner; a support plate, which is connected to the waist belt by means of the connecting mechanism and can change its position in the up and down direction relative to the back panel main body; and a locking mechanism, which fixes the position of the support plate in the up and down direction relative to the back panel main body.

[0045] According to the above configuration, the user can adjust the position of the hip belt relative to the back panel body by changing the locking position of the support plate relative to the back panel body.

[0046] In one or more embodiments, the device may also be a power supply unit including a plurality of rechargeable secondary battery cells.

[0047] According to the above structure, the user can carry the power supply device to various places. Therefore, even in a place where the user cannot connect to a commercial power supply, the user can use the electronic device by bringing the power supply device and supplying power to the electronic device from the power supply device.

[0048] Another backpack device disclosed in the present specification includes: a backpack for a user to wear; and a device mounted on the backpack. The backpack includes: a backpack body including a pair of shoulder straps for the user to hang on both shoulders, and the device is mounted on the backpack body; and a bracket member mounted on the backpack body in a non-rotatable manner. The bracket member includes: an upper connecting portion connected to the backpack body; a lower connecting portion connected to the backpack body at a position lower than the upper connecting portion; a left foot portion, which is arranged at the left rear when viewed from the backpack body; and a right foot portion, which is arranged at the right rear when viewed from the backpack body. The backpack device can be placed on the loading surface by making the lower part of the backpack body, the left foot portion, and the right foot abut against the loading surface.

[0049] Another backpack disclosed in the present specification is for a user to wear to carry a load. The backpack includes: a backpack body, which includes a pair of shoulder straps for the user to hang on both shoulders and has the load installed in a detachable manner; and a bracket member, which is mounted on the backpack body in a non-rotatable manner. The bracket member includes: an upper connecting portion, which is connected to the backpack body; a lower connecting portion, which is connected to the backpack body at a position lower than the upper connecting portion; a left foot, which is arranged at the left rear when viewed from the backpack body; and a right foot, which is arranged at the right rear when viewed from the backpack body. When the load is mounted on the backpack body, the backpack makes the lower part of the backpack body, the left foot, and the right foot abut against the loading surface, so that the load can be placed on the loading surface.

[0050] According to the above-mentioned structure, the support member cannot rotate relative to the back frame body. In addition, the support member is connected to the back frame body at least at two locations, upper and lower. Therefore, the posture of the support member relative to the back frame body is relatively stable. Therefore, even if the backpack device (or back frame) is placed on a loading surface and the backpack device (or back frame) is subjected to impact or vibration, the posture of the support member will not change simply. Therefore, according to the above-mentioned structure, a backpack device (or back frame) that is not easy to tip over when placed on a loading surface can be realized.

[0051] In one or more embodiments, the support member may also include: a first extension portion, which has a rod shape and extends between the left foot and the upper connecting portion; a second extension portion, which has a rod shape and extends between the left foot and the lower connecting portion; a third extension portion, which has a rod shape and extends between the right foot and the upper connecting portion; and a fourth extension portion, which has a rod shape and extends between the right foot and the lower connecting portion.

[0052] When the backpack device is placed on the placement surface, the bracket member receives forces from the placement surface and the back frame body. At this time, depending on the shape of the bracket member, sometimes a large stress is generated locally in the bracket member. According to the above structure, the forces received by the bracket member from the placement surface and the back frame body are dispersed in a well-balanced manner by the first extension part, the second extension part, the third extension part, and the fourth extension part. Thereby, it is possible to suppress the large stress generated locally in the bracket member.

[0053] In one or more embodiments, when viewed from above, the first extension portion may be offset to the left relative to the second extension portion. When viewed from above, the third extension portion may be offset to the right relative to the fourth extension portion.

[0054] According to the above configuration, the external sturdiness of the bracket member can be improved.

[0055] In one or more embodiments, the bracket component may also include: a left curved portion having a rod shape bent into a letter U shape, connecting the first extension portion and the second extension portion; and a right curved portion having a rod shape bent into a letter U shape, connecting the third extension portion and the fourth extension portion. The left foot may also be formed on the lower surface of the left curved portion. The right foot may also be formed on the lower surface of the right curved portion.

[0056] Under the assumption that the left curved portion (or the right curved portion) has a rod shape bent into the shape of the letter V, the left foot (or the right foot) becomes a relatively sharp shape. Therefore, when the backpack device is placed on the loading surface, the balance of the bracket component relative to the loading surface is destroyed due to the slight impact or vibration applied to the backpack device. As a result, when the backpack device is placed on the loading surface, the backpack device may easily tip over. According to the above structure, since the left curved portion (and the right curved portion) has a rod shape bent into the shape of the letter U, the left foot (or the right foot) becomes a relatively rounded shape. Therefore, even if the backpack device is placed on the loading surface and the backpack device is subjected to impact or vibration, the balance of the bracket component relative to the loading surface is not easily destroyed. Therefore, according to the above structure, a backpack device that is less likely to tip over can be realized.

[0057] In one or more embodiments, the backpack device may also include a connecting member for connecting the lower connecting portion of the bracket member to the back frame body. The connecting member may also include an end surface that abuts against the loading surface when the backpack device is placed on the loading surface.

[0058] According to the above structure, when the backpack device is placed on the loading surface, the connecting member contacts the loading surface. Therefore, there is no need to provide a component that contacts the loading surface when the backpack device is placed on the loading surface separately from the connecting member. Thus, the number of components of the backpack device can be reduced.

[0059] In one or more embodiments, the bracket member may be formed by bending a rod-shaped member.

[0060] For example, a plurality of rod-shaped members can be connected to each other by welding, etc., to form a bracket member. However, in this case, it takes time to form the bracket member. According to the above structure, the bracket member is formed by bending one rod-shaped member. Therefore, the time for forming the bracket member can be reduced.

[0061] In one or more embodiments, the rod-shaped member may also be a hollow tube.

[0062] In the above-mentioned structure, since the hollow tube is used as the rod-shaped member, the weight of the bracket member can be reduced compared with the case where a solid material is used as the rod-shaped member.

[0063] In one or more embodiments, the device may also be a power supply unit including a plurality of rechargeable secondary battery cells.

[0064] According to the above structure, the user can carry the power supply device to various places. Therefore, even in a place where the user cannot connect to a commercial power supply, the user can use the electronic device by bringing the power supply device and supplying power to the electronic device from the power supply device.

[0065] In one or more embodiments, when viewed from the left, the angle formed by the straight line connecting the upper connecting part and the lower connecting part and the straight line connecting the lower connecting part and the left foot portion may be greater than 90 degrees. When viewed from the right, the angle formed by the straight line connecting the upper connecting part and the lower connecting part and the straight line connecting the lower connecting part and the right foot portion may be greater than 90 degrees.

[0066] If the upper connecting part is offset toward the rear compared to the lower connecting part, the center of gravity of the backpack device when placed on the loading surface may be too close to the rear, depending on the weight and shape of the device. In this case, if the backpack device is slightly tilted toward the rear, the backpack device may sometimes topple over. According to the above structure, since the upper connecting part is offset toward the front compared to the lower connecting part, the center of gravity of the backpack device when placed on the loading surface is relatively close to the front. As a result, it is possible to prevent the center of gravity of the backpack device when placed on the loading surface from being too close to the rear. Therefore, a backpack device that is less likely to topple over can be realized.

[0067] (Example)

[0068] Figure 1The backpack device 2 shown includes a back frame 4 for the user to wear and a power supply device 6 detachably mounted on the back frame 4. The backpack device 2 can be used in a state of being carried by the user, and can supply power to various electronic devices. The back frame 4 includes a back frame body 8 and a bracket member 10. The back frame body 8 includes: a back plate 12 on which the power supply device 6 is detachably mounted; a left shoulder strap 14 for the user to hang on the left shoulder; a right shoulder strap 16 for the user to hang on the right shoulder; a waist belt 18 for the user to wrap around the waist; and a connecting mechanism 20 that connects the back plate 12 and the waist belt 18. In addition, in this specification, the front-back direction, left-right direction, and up-down direction viewed from the user when the user is standing upright with the backpack device 2 on his back are defined as the front-back direction, left-right direction, and up-down direction of the backpack device 2.

[0069] like Figure 2 As shown, the power supply device 6 has a substantially rectangular parallelepiped shape. The power supply device 6 includes a housing 22, a handle 24 (see Figure 1 ), power switch 26, display LED 28, charging connector 30 and power cable 32 (partially not shown). Multiple rechargeable secondary battery cells (such as lithium-ion battery cells) are stored inside the housing 22, but this is not shown. The handle 24 is installed on the upper part of the housing 22. The user can hold the handle 24 to carry the power supply device 6 in a state removed from the back frame 4. The power switch 26 is arranged on the right side of the housing 22. The user can switch the main power supply of the power supply device 6 on / off by operating the power switch 26. The display LED 28 is arranged on the right side of the housing 22 at the upper part of the power switch 26. The display LED 28 can display the remaining battery level of the power supply device 6. The charging connector 30 is arranged on the right side of the housing 22 at the lower part of the power switch 26. The user can charge multiple secondary battery cells with power supplied from the external power supply by inserting a charging plug (not shown) connected to the external power supply into the charging connector 30. The power cable 32 extends downward from the lower side of the housing 22. The user can connect a power plug (not shown) provided at the front end of the power cable 32 to various electronic devices, thereby operating the electronic devices using the power charged in the plurality of secondary battery cells. Figure 1 As shown, the back frame 4 is provided with a plurality of cable holders 34 capable of holding the power cable 32 . The user can lay the power cable 32 on the back frame 4 by holding the power cable 32 on the plurality of cable holders 34 .

[0070] like Figure 3As shown, the back plate 12 includes a back plate body 36, a belt mounting plate 38, a sliding plate 40, an upper side engaging member 42, and a lower side engaging member 44. The back plate body 36 is made of a plastic material (e.g., polyamide). The belt mounting plate 38 is made of a plastic material (e.g., polyethylene). The sliding plate 40 is made of a metal material (e.g., aluminum alloy). The upper side engaging member 42 is made of a metal material (e.g., aluminum alloy). The lower side engaging member 44 is made of a metal material (e.g., aluminum alloy).

[0071] like Figure 2 As shown, a latch 46 that can be operated by a user is provided at the upper portion of the housing 22 of the power supply device 6. In addition, a left engaging claw 48 and a right engaging claw 50 that protrude downward are provided at the lower front portion of the housing 22. Figure 3 As shown, the upper engaging member 42 has a latch 46 (see Figure 2 ) corresponding to the latch receiving member 52. The upper side engaging member 42 is fixed to the upper part of the back plate body 36. In addition, the lower side engaging member 44 has a left side engaging claw 48 (see Figure 2 ) and the corresponding left receiving portion 54 and the right engaging claw 50 (refer to Figure 2 ) The lower side engaging member 44 is fixed to the lower part of the back plate body 36. The user can install the power supply device 6 on the back plate body 36 by making the left side receiving portion 54 and the right side receiving portion 56 receive the left side engaging claw 48 and the right side engaging claw 50 and making the latch 46 engage with the latch receiving member 52. When the power supply device 6 is installed on the back plate body 36, the user can release the engagement between the latch 46 and the latch receiving member 52 by operating the latch 46. When the engagement between the latch 46 and the latch receiving member 52 is released, the user moves the power supply device 6 backward and upward relative to the back plate body 36, so that the left side engaging claw 48 and the right side engaging claw 50 can be pulled out from the left side receiving portion 54 and the right side receiving portion 56, and the power supply device 6 can be removed from the back plate body 36.

[0072] The belt mounting plate 38 is fixed to the front surface of the back plate body 36. The belt mounting plate 38 is formed with mounting holes 58a, 58b, 58c, and 58d. Figure 4 As shown, at the rear of the left shoulder strap 14, the mounting holes 58a, 58b (see Figure 3 ) are provided with mounting buckles 60a, 60b at positions corresponding to the mounting holes 58c, 58d (see Figure 3) are provided at positions corresponding to the positions of the shoulder straps 14 and 16. The user can attach the shoulder strap 14 and the right shoulder strap 16 to the belt mounting plate 38 by attaching the shoulder strap buckles 60a, 60b, 60c, 60d to the attachment holes 58a, 58b, 58c, 58d. In addition, the user can detach the shoulder strap 14 and the right shoulder strap 16 from the belt mounting plate 38 by detaching the shoulder strap buckles 60a, 60b, 60c, 60d from the attachment holes 58a, 58b, 58c, 58d.

[0073] like Figure 3 , Figure 5 As shown, a sleeve portion 62 is provided on the back plate body 36, and the sleeve portion 62 receives the sliding plate 40 in a manner that it can slide in the up-down direction. The sleeve portion 62 has an opening portion 64 at the bottom. The sliding plate 40 is inserted into the sleeve portion 62 through the opening portion 64. A plurality of window holes 66 are formed on the front wall and the rear wall of the sleeve portion 62, and the sliding plate 40 received by the sleeve portion 62 can be visually recognized from the outside of the back plate body 36 through the window holes 66.

[0074] like Figure 5 , Figure 6 As shown, the back plate 12 is also provided with a locking mechanism 68, which is used to lock the sliding plate 40 relative to the back plate body 36. The locking mechanism 68 includes a locking member 70, a shaft 72 and a coil spring 74. The locking member 70 is supported by the shaft 72 so as to be able to swing relative to the back plate 12. The coil spring 74 applies force to the locking member 70 forward relative to the back plate body 36 at a portion on the upper side of the shaft 72. As a result, a moment such that the locking member 70 rotates in a clockwise direction when viewed from the right with the shaft 72 as the center acts on the locking member 70. In addition, the locking member 70 is provided with a protrusion 76 protruding rearward from the rear surface of the locking member 70. Since the protrusion 76 is formed at a portion on the lower side than the shaft 72, it is applied rearward by the moment acting on the locking member 70. A through hole 78 is formed on the rear wall of the sleeve portion 62, and the through hole 78 is formed at a position corresponding to the protrusion 76. In addition, a plurality of engagement holes 80 arranged at predetermined intervals in the vertical direction are formed in the slide plate 40. Normally, the protrusion 76 of the locking member 70 enters the through hole 78 of the sleeve portion 62 after passing through any of the plurality of engagement holes 80 of the slide plate 40. As a result, the slide plate 40 is locked relative to the back plate body 36.

[0075] The lock member 70 includes an operation portion 82 that can be operated by the user. The operation portion 82 is formed on the front surface of the lock member 70 at a portion above the shaft 72. When the user pushes the operation portion 82 against the biasing force of the coil spring 74, the protrusion 76 of the lock member 70 is pulled out from the engagement hole 80 of the slide plate 40 and the through hole 78 of the sleeve portion 62, and the slide plate 40 is unlocked from the back plate body 36. In a state where the slide plate 40 is unlocked from the back plate body 36, the user can slide the slide plate 40 relative to the back plate body 36. Thus, the user can appropriately change the engagement hole 80 aligned with the protrusion 76 and the through hole 78. Thereafter, when the user releases the push of the operation portion 82 and the protrusion 76 passes through the engagement hole 80 of the slide plate 40, the slide plate 40 is locked again relative to the back plate body 36. The user can appropriately change the locking position of the slide plate 40 relative to the back plate body 36 in the up-down direction through the above series of operations. Since the belt 18 (refer to Figure 1 ) is installed on the sliding plate 40, so the user can adjust the position of the waist belt 18 relative to the back plate body 36 by changing the locking position of the sliding plate 40 relative to the back plate body 36.

[0076] (Technical Features of the Connecting Mechanism 20)

[0077] like Figure 7 As shown, the connection mechanism 20 includes an elastic member 84 provided between the sliding plate 40 and the waist belt 18. The force applied to the connection mechanism 20 from one of the back plate 12 and the waist belt 18 is transmitted to the other of the back plate 12 and the waist belt 18 via the elastic member 84. The elastic member 84 is made of a resin material (e.g., polyethylene).

[0078] like Figure 8As shown, the elastic member 84 includes: a fastening portion 90 fastened to the front surface of the sliding plate 40 by a bolt 86 and a nut 88; a plate portion 94 accommodated in a pocket 92 provided on the rear surface of the waist belt 18; and a connecting portion 96 connecting the plate portion 94 and the fastening portion 90. The plate portion 94 extends in the up-down and left-right directions. The front surface 96a of the connecting portion 96 is smoothly connected to the front surface of the plate portion 94 at the upper end of the plate portion 94. The front surface 96a of the connecting portion 96 includes a curved surface 98 that is curved in a manner away from an imaginary plane V formed by virtually extending the front surface of the plate portion 94 as it moves away from the upper end of the plate portion 94. The rear surface of the connecting portion 96 is connected to the rear surface of the plate portion 94 at the upper end of the plate portion 94. The rear surface of the plate portion 94 is curved in a manner toward the rear as it moves toward the upper side. In addition, the connecting portion 96 has a recessed portion 100 formed by making the front surface 96a recessed from the front toward the rear. The fastening portion 90 is provided at the bottom of the recessed portion 100. The fastening portion 90 includes: a bushing mounting hole 102, which is formed by penetrating the bottom of the recessed portion 100 in the front-to-back direction; an annular portion 104, which surrounds the bushing mounting hole 102; and a mounting groove 106, which is provided on the front surface of the annular portion 104. An annular bushing 108 is installed in the bushing mounting hole 102. An O-ring 110 is installed in the mounting groove 106. In addition, washers 112 and 114 are installed in the bolt 86. The washer 112 is arranged between the head of the bolt 86 and the annular portion 104. The washer 114 is arranged between the sliding plate 40 and the nut 88. The external thread portion of the bolt 86 is threadedly engaged with the internal thread portion formed in the nut 88 after passing through the washer 112, the ring bushing 108, the through hole 116 formed in the sliding plate 40, and the washer 114. The bolt 86 and the nut 88 fasten the sliding plate 40 and the annular portion 104 of the fastening portion 90 in the front-rear direction via the washers 112 and 114. The O-ring 110 is pressed between the washer 112 and the annular portion 104.

[0079] like Fig. 9 As shown, the elastic member 84 further includes an abutting surface 118 abutting against the front surface of the sliding plate 40 and guide protrusions 120a, 120b protruding to a position behind the abutting surface 118. The guide protrusions 120a, 120b enter the guide holes 122a, 122b formed in the sliding plate 40, respectively. In a state where the guide protrusions 120a, 120b enter the guide holes 122a, 122b, the elastic member 84 is prohibited from moving in the up, down, left, and right directions relative to the sliding plate 40. In addition, the connecting portion 96 includes a plurality of ribs 124 protruding toward the rear from the rear surface of the connecting portion 96. In addition, the connecting portion 96 includes a plurality of weight-reducing recesses 126, which are formed by making the abutting surface 118 (and the front surfaces of the guide protrusions 120a, 120b) recessed from the rear toward the front.

[0080] like Fig.10As shown, when viewed from the front, the plate portion 94 has a substantially rectangular shape with a length direction along the left-right direction and a width direction along the up-down direction. The lower end of the connecting portion 96 is connected to a portion of the upper end of the plate portion 94. Fig.10 In the figure, for convenience, the boundary B between the plate portion 94 and the connecting portion 96 is shown by a dotted line. The boundary B can be referred to as the upper end of the plate portion 94 or the lower end of the connecting portion 96. In addition, the connecting portion 96 includes a fixed width portion 128 extending in the up-down direction with a substantially constant left-right width and a narrowing portion 130 connected to the upper end of the fixed width portion 128 and whose left-right width decreases as it goes upward. When viewed from the front, the fixed width portion 128 has a substantially rectangular shape with a length direction along the left-right direction and a width direction along the up-down direction. When viewed from the front, the narrowing portion 130 has a substantially triangular shape with the upper end being a vertex. The left-right width of the connecting portion 96 decreases monotonically as it moves away from the upper end of the plate portion 94.

[0081] like Fig.11 As shown, the bag 92 covers the plate portion 94 (see Fig.10 ) is sewn to the waist belt 18 along the sewing line S in its entirety. The sewing line S is defined to surround the portion of the upper end of the plate portion 94 excluding the boundary B, the left end of the plate portion 94, the right end of the plate portion 94, and the lower end of the plate portion 94. Therefore, the bag 92 presses the plate portion 94 against the waist belt 18 and prohibits the plate portion 94 from moving in the front-back, top-bottom, left-right directions relative to the waist belt 18. As a result, the plate portion 94 is attached to the waist belt 18 in a manner that does not change its posture relative to the waist belt 18.

[0082] Figure 1 The bending rigidity of the connection portion 96 of the elastic member 84 shown is smaller than the bending rigidity of the back plate 12 (back plate body 36, belt mounting plate 38, sliding plate 40, upper engaging member 42 and lower engaging member 44). Therefore, when the user wearing the backpack device 2 takes a posture different from the upright posture (for example, a forward bending posture, a backward bending posture, a twisted posture), the connection portion 96 of the elastic member 84 is deformed, and the back plate 12 and the waist belt 18 move respectively following the change of the user's posture. In addition, the bending rigidity mentioned here means, for example, the bending rigidity relative to the bending around the axis along the left-right direction.

[0083] like Figure 7 As shown, the sliding plate 40 includes a main body portion 132 extending in the up-down direction, an inclined portion 134 extending from the lower end of the main body portion 132 toward the rear and downward, and an offset portion 136 extending downward from the lower end of the inclined portion 134. The main body portion 132 is inserted into the sleeve portion 62 (see Figure 3 ) and provide a fastening portion 90 (refer to Figure 8 The inclined portion 134 is located at the same position as the plate portion 94 of the elastic member 84 in the front-rear direction (see Figure 8 ) relative to each other. The inclined portion 134 is inclined so as to be away from the plate portion 94 as it goes from the top to the bottom. A plurality of weight-reducing holes 138 (see Figure 3 ). The offset portion 136 extends substantially parallel to the main body portion 132 at a position offset to the rear from the rear surface of the main body portion 132. When viewed from the side, the sliding plate 40 has a shape that is warped to the rear at a position below the lower end of the fastening portion 90. Therefore, the structure is such that, assuming that the waist belt 18 is Figure 7 The position shown is moved to the rear, and the waist belt 18 is also difficult to hit the sliding plate 40.

[0084] (Technical Features of the Bracket Component 10)

[0085] like Fig.12As shown, the support member 10 is formed by bending a hollow tube. The support member 10 uses a metal material (for example, aluminum alloy). The support member 10 includes: a first upper connecting portion 140L, which extends to the left from one end of the hollow tube; a bent portion 142L, which is connected to the left end of the first upper connecting portion 140L and is bent toward the lower left rear as it moves away from the left end of the first upper connecting portion 140L; a straight portion 144L, which is connected to the lower end of the bent portion 142L and extends roughly linearly in the direction (lower left rear) toward which the lower end of the bent portion 142L is directed; and a bent portion 146L, which is connected to the lower end of the straight portion 144L and is bent toward the lower left rear as it moves away from the lower end of the straight portion 144L. The left curved portion 148L is connected to the lower end of the curved portion 146L and is bent into a U-shape as it moves away from the lower end of the curved portion 146L to the right and toward the front and upward. The straight portion 150L is connected to the right end of the left curved portion 148L and extends roughly linearly in the direction (front and upward) toward which the right end of the left curved portion 148L is directed. The curved portion 152L is connected to the front end of the straight portion 150L and is bent toward the right as it moves away from the front end of the straight portion 150L. The lower connecting portion 154 is connected to the curved portion 148L. The right end of the curved portion 152L is connected to the right end and extends in the left-right direction; the curved portion 152R is connected to the right end of the lower connecting portion 154 and is bent in a manner that moves away from the right end of the lower connecting portion 154 and moves toward the rear and downward direction; the straight portion 150R is connected to the rear end of the curved portion 152R and extends roughly linearly in the direction (rear and downward direction) toward which the rear end of the curved portion 152R is directed; the right curved portion 148R is bent into a letter U shape in a manner that moves away from the rear end of the straight portion 150R to the right and moves toward the front and upward direction; the curved portion 146R is connected to the right curved portion 150R and moves toward the rear and downward direction. The hollow tube has a right end connected to the right end of the right curved portion 148R, and is bent toward the upper left front as it moves away from the right end of the right curved portion 148R; a straight portion 144R, which is connected to the front end of the curved portion 146R, and extends roughly linearly in the direction (upper left front) in which the front end of the curved portion 146R is directed; a curved portion 142R, which is connected to the upper end of the straight portion 144R, and is bent toward the left as it moves away from the upper end of the straight portion 144R; and a second upper connecting portion 140R, which is connected to the left end of the curved portion 142R, and extends in the left-right direction to reach the other end of the hollow tube. The left side portions 140L, 142L, 144L, 146L, 148L, 150L, ​​152L of the bracket member 10 and the right side portions 140R, 142R, 144R, 146R, 148R, 150R, 152R of the bracket member 10 are mirror-symmetrical with respect to a plane extending in the front-rear and top-bottom directions.

[0086] In addition, in the present embodiment, the first upper connecting portion 140L and the second upper connecting portion 140R are also collectively referred to as “upper connecting portions 140L, 140R”, the bent portion 142L, the straight portion 144L and the bent portion 146L are also collectively referred to as “the first extension portion 156”, the straight portion 150L and the bent portion 152L are also collectively referred to as “the second extension portion 158”, the bent portion 142R, the straight portion 144R and the bent portion 146R are also collectively referred to as “the third extension portion 160”, and the straight portion 150R and the bent portion 152R are also collectively referred to as “the fourth extension portion 162”.

[0087] like Fig.13 As shown, the bracket member 10 is non-rotatably mounted on the sliding plate 40 by means of an upper side connecting member 164 and a lower side connecting member 166 .

[0088] The upper connecting member 164 includes supporting portions 168L, 168R and threaded hole portions 170a, 170b, 170c. The supporting portions 168L, 168R include: groove portions 172L, 172R, which extend from the ends of the upper connecting member 164 in the left-right direction and are open to the front; and positioning pins 174L, 174R, which protrude forward from the bottom surfaces of the groove portions 172L, 172R. The groove portions 172L, 172R receive the upper connecting portions 140L, 140R of the bracket member 10. The bottom surfaces of the groove portions 172L, 172R become semi-cylindrical surfaces corresponding to the outer peripheral surfaces of the upper connecting portions 140L, 140R. In addition, the positioning pins 174L, 174R enter into the positioning holes 176L, 176R (refer to Fig.12 ). When the positioning pins 174L and 174R enter the positioning holes 176L and 176R, the upper connecting parts 140L and 140R are prohibited from moving in the extending direction (left-right direction) of the groove parts 172L and 172R. In addition, through holes 178a, 178b, and 178c aligned with the threaded hole parts 170a, 170b, and 170c are formed in the main body 132 of the sliding plate 40. The upper connecting member 164 is threadedly engaged with the threaded hole parts 170a, 170b, and 170c in a state where the screws 180a, 180b, and 180c are passed through the through holes 178a, 178b, and 178c, thereby being fixed to the sliding plate 40. When the upper connecting member 164 is fixed to the sliding plate 40, the upper connecting parts 140L and 140R are sandwiched between the upper connecting member 164 and the sliding plate 40. Thus, the upper connecting portions 140L and 140R are connected to the slide plate 40 .

[0089] The lower connecting member 166 includes a support portion 182 and threaded hole portions 184a, 184b, and 184c. The support portion 182 includes a groove portion 186 extending from the left end to the right end of the lower connecting member 166 and opening forward. The groove portion 186 receives the lower connecting portion 154 of the bracket member 10. The bottom surface of the groove portion 186 is a semi-cylindrical surface corresponding to the outer peripheral surface of the lower connecting portion 154. In addition, through holes 188a, 188b, and 188c aligned with the threaded hole portions 184a, 184b, and 184c are formed in the offset portion 136 of the sliding plate 40. The lower connecting member 166 is screwed together with the screw hole portions 184a, 184b, 184c while the screws 190a, 190b, 190c are passed through the through holes 188a, 188b, 188c, thereby being fixed to the sliding plate 40. When the lower connecting member 166 is fixed to the sliding plate 40, the lower connecting portion 154 is sandwiched between the lower connecting member 166 and the sliding plate 40. Thus, the lower connecting portion 154 is connected to the sliding plate 40.

[0090] like Figure 7 , Fig.14 As shown, the bracket member 10 also includes a left foot 192L and a right foot 192R. The left foot 192L is formed on the lower surface of the left curved portion 148L. The right foot 192R is formed on the lower surface of the right curved portion 148R. In addition, the lower connecting member 166 has an end surface 194 parallel to the front, rear, left and right directions. The end surface 194 is located at a position lower than the lower end of the sliding plate 40. In this embodiment, no matter what the locking position of the sliding plate 40 is relative to the back plate body 36, when the backpack device 2 is observed from above along the vertical direction in a state where the left foot 192L, the right foot 192R and the end surface 194 are in contact with the loading surface (e.g., the ground), the center of gravity of the backpack device 2 overlaps with the support base surface formed by the left foot 192L, the right foot 192R and the end surface 194. Therefore, the user can place the backpack device 2 on the placement surface by making the left foot 192L, the right foot 192R and the end surface 194 contact the placement surface. In addition, the support base surface mentioned here is a surface having a substantially triangular shape with the three parts of the left foot 192L, the right foot 192R and the end surface 194 as vertices.

[0091] like Fig.15 As shown, when viewed from above, the upper connecting portions 140L and 140R are offset forward relative to the lower connecting portion 154. When viewed from above, the first extending portion 156 is offset to the left relative to the second extending portion 158. When viewed from above, the third extending portion 160 is offset to the right relative to the fourth extending portion 162.

[0092] exist Fig.14, the position P1 of the front end of the upper connecting portion 140L, 140R when viewed from the left, the position P2 of the front end of the lower connecting portion 154 when viewed from the left, and the position P3 of the lower end of the left leg 192L when viewed from the left are shown. The distance between the position P1 and the position P2 when viewed from the left is, for example, in the range of 40 mm to 130 mm, and is approximately 108 mm in the present embodiment. In addition, the angle formed by the straight line L1 connecting the position P1 and the position P2 and the straight line L3 connecting the position P2 and the position P3 when viewed from the left is, for example, greater than 90 degrees, and is approximately 104 degrees in the present embodiment. In addition, the angle formed by the straight line L3 and the straight line L2 connecting the position P1 and the position P3 when viewed from the left is, for example, greater than 16 degrees, and is approximately 31 degrees in the present embodiment.

[0093] exist Figure 7 , the position P4 of the front end of the upper connecting portion 140L, 140R when viewed from the right, the position P5 of the front end of the lower connecting portion 154 when viewed from the right, and the position P6 of the lower end of the right leg 192R when viewed from the right are shown. The distance between the position P4 and the position P5 when viewed from the right is, for example, in the range of 40 mm to 130 mm, and is approximately 108 mm in the present embodiment. In addition, the angle formed by the straight line L4 connecting the position P4 and the position P5 and the straight line L6 connecting the position P5 and the position P6 when viewed from the right is, for example, greater than 90 degrees, and is approximately 104 degrees in the present embodiment. In addition, the angle formed by the straight line L6 and the straight line L5 connecting the position P4 and the position P6 when viewed from the right is, for example, greater than 16 degrees, and is approximately 31 degrees in the present embodiment.

[0094] (Variation Example)

[0095] Equipment or transported objects other than the power supply device 6 may be mounted on the back frame 4. For example, a basket for storing articles, a tank for storing liquid, or a work machine that a user can use may be mounted on the back frame 4. The work machine mentioned here may be, for example, a blower, a lawn mower, a hedge trimmer, a chain saw, a vacuum cleaner, or a sprayer.

[0096] The holder member 10 does not need to be formed by bending a single rod-shaped member. For example, the holder member 10 may be formed by connecting a plurality of rod-shaped members to each other.

[0097] The stent component 10 may also be made of solid material instead of a hollow tube.

[0098] The support member 10 may be connected to a portion of the back frame body 8 other than the sliding plate 40 (eg, the rear surface of the waist belt 18 ).

[0099] The method of connecting the bracket member 10 to the back frame body 8 may be changed as appropriate. For example, the bracket member 10 may be welded to the slide plate 40.

[0100] The shape of the bracket member 10 may also be changed appropriately. As a result, the left curved portion 148L may be bent into a V-shape. The right curved portion 148R may be bent into a V-shape. When viewed from above, the upper connecting portions 140L and 140R may be offset to the rear relative to the lower connecting portion 154. When viewed from above, the first extension portion 156 may be offset to the right relative to the second extension portion 158. When viewed from above, the third extension portion 160 may be offset to the left relative to the fourth extension portion 162. The angle formed by the straight line L1 and the straight line L3 may be smaller than 90 degrees. The angle formed by the straight line L3 and the straight line L2 may be smaller than 16 degrees. The angle formed by the straight line L4 and the straight line L6 may be smaller than 90 degrees. The angle formed by the straight line L6 and the straight line L5 may be smaller than 16 degrees.

[0101] The lower end (i.e., end surface 194) of the lower connecting member 166 may also be located above the lower end of the sliding plate 40. In this case, the backpack device 2 can be placed on the placement surface by bringing the lower ends of the left leg 192L, the right leg 192R, and the sliding plate 40 into contact with the placement surface.

[0102] The back plate body 36 and the sliding plate 40 may be replaced by a single plate. The power supply device 6, the bracket member 10 and the connecting mechanism 20 may be mounted on the plate. The position of the waist belt 18 in the vertical direction relative to the plate may not be changed.

[0103] The elastic member 84 may be made of a material other than a resin material. For example, the elastic member 84 may be made of a rubber material.

[0104] The elastic member 84 may be a spring arranged so as to be compressed between the waist belt 18 and the slide plate 40. In this case, the material used for the elastic member 84 may be a metal material.

[0105] The method of attaching the plate portion 94 to the waist belt 18 may be changed as appropriate. For example, the plate portion 94 may be fixed to the waist belt 18 by caulking.

[0106] The shape of the elastic member 84 may be changed as appropriate. As a result, the fastening portion 90 may be arranged at a position lower than the upper end of the plate portion 94. The front surface 96a of the connecting portion 96 may extend along the imaginary plane V. When viewed from the front, the left and right widths of the connecting portion 96 may not decrease monotonically. The connecting portion 96 may not include the recess 100. The elastic member 84 may not include the guide protrusions 120a, 120b.

[0107] The slide plate 40 may not have a shape that is warped toward the rear side when viewed from the side. That is, the slide plate 40 may extend linearly from the upper end to the lower end.

[0108] (Technical Features of Embodiments)

[0109] In one or more embodiments, the backpack device 2 includes: a back frame 4, which is worn by a user; and a power supply device 6 (an example of a device) mounted on the back frame 4. The back frame 4 includes: a pair of shoulder straps 14, 16, which are hung on the shoulders of the user; a back plate 12, on which the pair of shoulder straps 14, 16 are mounted, and the power supply device 6 is mounted; a waist belt 18, which is wrapped around the waist of the user; and a connecting mechanism 20, which connects the back plate 12 and the waist belt 18. The connecting mechanism 20 includes an elastic member 84, which has a bending rigidity smaller than that of the back plate 12. The force applied to the connecting mechanism 20 from one of the back plate 12 and the waist belt 18 is transmitted to the other of the back plate 12 and the waist belt 18 via the elastic member 84.

[0110] In one or more embodiments, the back frame 4 is worn by the user in order to carry the power supply device 6 (an example of a transported object). The back frame 4 includes: a pair of shoulder straps 14 and 16, which are hung on the shoulders of the user; a back plate 12, on which the pair of shoulder straps 14 and 16 are mounted and the power supply device 6 is mounted in a detachable manner; a waist belt 18, which is wrapped around the waist of the user; and a connecting mechanism 20, which connects the back plate 12 and the waist belt 18. The connecting mechanism 20 includes an elastic member 84, and the elastic member 84 has a bending rigidity smaller than that of the back plate 12. The force applied to the connecting mechanism 20 from one of the back plate 12 and the waist belt 18 is transmitted to the other of the back plate 12 and the waist belt 18 via the elastic member 84.

[0111] According to the above structure, when the user's posture changes, the elastic member 84 is deformed, and the back plate 12 and the waist belt 18 move respectively following the change in the user's posture. Moreover, when the user takes a forward bending posture, the elastic restoring force generated by the elastic member 84 is used to lift the back plate 12 relative to the waist belt 18. Specifically, the back plate 12 is lifted relative to the waist belt 18 with the vicinity of the user's shoulders as a fulcrum. As a result, instead of increasing the load applied to the user's shoulders, the load applied to the user's waist is reduced. Therefore, according to the above structure, the burden applied to the waist of the user wearing the backpack device 2 (or the back frame 4) can be reduced.

[0112] In one or more embodiments, the elastic member 84 is disposed forward of the front surface of the back plate 12 .

[0113] According to the above structure, since the elastic member 84 is located in front of the front surface of the back plate 12, the back plate 12 is separated backward relative to the waist belt 18 by the elastic member 84. As a result, a gap is generated between the back of the user and the back plate 12, so that the air permeability between the back of the user and the back plate 12 can be improved.

[0114] In one or more embodiments, the elastic member 84 includes: a plate portion 94, which extends along the rear surface of the waist belt 18 and is mounted on the waist belt 18 in a manner that does not change its posture relative to the waist belt 18; a fastening portion 90, which is arranged at a position farther rearward than the rear surface of the plate portion 94 and is fastened to the front surface of the back panel 12 by bolts 86 and nuts 88 (an example of a prescribed fastener); and a connecting portion 96, which connects the plate portion 94 and the fastening portion 90.

[0115] According to the above structure, the back plate 12 is separated from the waist belt 18 to the rear by the elastic member 84. Thus, a gap is generated between the back of the user and the back plate 12, so that the air permeability between the back of the user and the back plate 12 can be improved.

[0116] In one or more embodiments, the fastening portion 90 is disposed above the upper end of the plate portion 94 .

[0117] According to the above structure, the gap between the user's back and the back plate 12 becomes larger than when the fastening portion 90 is located below the upper end of the plate portion 94. Therefore, the effect of improving the air permeability between the user's back and the back plate 12 can be more significantly exerted.

[0118] In one or more embodiments, the connection portion 96 includes a front surface 96a (an example of a connection surface) connected to the front surface of the plate portion 94 and extending upward from the upper end of the plate portion 94. The front surface 96a of the connection portion 96 includes a curved surface 98 that curves away from an imaginary plane V formed by virtually extending the front surface of the plate portion 94 as it moves away from the upper end of the plate portion 94.

[0119] Since the fastening portion 90 is arranged at a position higher than the upper end of the plate portion 94, the connection portion 96 sometimes protrudes to a position higher than the upper end of the waist belt 18. In this case, when the user uses the backpack device 2, it is expected that the front surface 96a of the connection portion 96 hits the waist or back of the user. If the front surface 96a of the connection portion 96 hits the waist or back of the user, there is a possibility that the user will feel uncomfortable. According to the above-mentioned structure, the front surface 96a of the connection portion 96 includes a curved surface 98 that bends backward as it goes upward. Therefore, it is difficult for the front surface 96a of the connection portion 96 to hit the waist or back of the user. Therefore, it is possible to suppress the discomfort caused to the user.

[0120] In one or more embodiments, when viewed from the front, the left-right width of the front surface 96 a of the connection portion 96 decreases monotonically as it moves away from the upper end of the plate portion 94 .

[0121] If the left-right width of the front surface 96a of the connection portion 96 increases monotonically as it moves away from the upper end of the plate portion 94, there is a possibility that there will be insufficient space for arranging components other than the elastic member 84. According to the above-mentioned structure, since the left-right width of the front surface 96a of the connection portion 96 decreases monotonically as it moves away from the upper end of the plate portion 94, it is possible to suppress the shortage of space for arranging components other than the elastic member 84.

[0122] In one or more embodiments, the connection portion 96 further includes a recessed portion 100 formed by recessing the front surface 96a of the connection portion 96 from the front toward the rear. The fastening portion 90 is provided at the bottom of the recessed portion 100.

[0123] According to the above-mentioned structure, the bolt 86 can be retracted into the recessed portion 100. Thus, it is possible to suppress the user from accidentally touching the bolt 86.

[0124] In one or more embodiments, the elastic member 84 further includes: an abutting surface 118 abutting against the front surface of the back plate 12; and guide protrusions 120a, 120b protruding to a position further rearward than the abutting surface 118. The back plate 12 has guide holes 122a, 122b for receiving the guide protrusions 120a, 120b.

[0125] According to the above-described configuration, it is possible to suppress the elastic member 84 from moving in the up-down, left-right direction relative to the back plate 12. Thus, the elastic member 84 can be positioned relative to the back plate 12 in the up-down, left-right direction.

[0126] In one or more embodiments, the back plate 12 has a shape that is warped toward the rear side at a portion below the lower end of the fastening portion 90 when viewed from the side.

[0127] When the user uses the backpack device 2, it is expected that the waist belt 18 moves backward and hits the back plate 12. If the waist belt 18 hits the back plate 12, there is a possibility that the user wearing the backpack device 2 will feel uncomfortable. According to the above structure, since the back plate 12 is warped to the rear side, it is difficult for the waist belt 18 to hit the back plate 12. This can suppress the discomfort caused to the user.

[0128] In one or more embodiments, the back panel 12 includes: a back panel body 36, on which a power supply device 6 is installed in a detachable manner; a sliding plate 40 (an example of a support plate), which is connected to the waist belt 18 by means of a connecting mechanism 20 and can change its position in the up and down direction relative to the back panel body 36; and a locking mechanism 68, which fixes the position of the sliding plate 40 in the up and down direction relative to the back panel body 36.

[0129] According to the above-described configuration, the user can adjust the position of the hip belt 18 relative to the back panel body 36 by changing the locking position of the slide plate 40 relative to the back panel body 36 .

[0130] In one or more embodiments, the device is a power supply unit 6 comprising a plurality of rechargeable secondary battery cells.

[0131] According to the above configuration, the user can carry the power supply device 6 to various places. Thus, the user can use the electronic device by carrying the power supply device 6 and supplying power to the electronic device even in a place where the user cannot connect to a commercial power source.

[0132] In one or more embodiments, the backpack device 2 includes: a back frame 4, which is worn by a user; and a power supply device 6 (an example of a device), which is mounted on the back frame 4. The back frame 4 includes: a back frame body 8 (back plate 12), which includes a pair of shoulder straps 14 and 16 for the user to hang on both shoulders, and the power supply device 6 is mounted on the back frame body 8; and a bracket member 10, which is mounted on the back frame body 8 (back plate 12) in a non-rotatable manner. The support member 10 includes: upper connecting parts 140L, 140R connected to the back frame body 8 (back plate 12); a lower connecting part 154 connected to the back frame body 8 (back plate 12) at a position lower than the upper connecting parts 140L, 140R; a left foot 192L, which is arranged at the left rear when viewed from the back frame body 8 (back plate 12); and a right foot 192R, which is arranged at the right rear when viewed from the back frame body 8 (back plate 12). The backpack device 2 can be placed on the placement surface by making the end surface 194 (an example of the lower part of the back frame body), the left foot 192L, and the right foot 192R abut against the placement surface.

[0133] In one or more embodiments, the back frame 4 is worn by the user to carry the power supply device 6 (an example of a transported object). The back frame 4 includes: a back frame body 8 (back plate 12), which includes a pair of shoulder straps 14 and 16 for the user to hang on both shoulders and has the power supply device 6 installed in a detachable manner; and a bracket member 10, which is mounted on the back frame body 8 (back plate 12) in a non-rotatable manner. The support member 10 includes upper connecting parts 140L and 140R connected to the back frame body 8 (back plate 12), a lower connecting part 154 connected to the back frame body 8 (back plate 12) at a position lower than the upper connecting parts 140L and 140R, a left leg 192L arranged at the left rear when viewed from the back frame body 8 (back plate 12), and a right leg 192R arranged at the right rear when viewed from the back frame body 8 (back plate 12). The back frame 4 can be placed on the placement surface by making the end surface 194 (an example of the lower part of the back frame body), the left leg 192L, and the right leg 192R contact the placement surface when the power supply device 6 is mounted on the back frame body 8 (back plate 12).

[0134] According to the above-mentioned structure, the support member 10 cannot rotate relative to the back frame main body 8 (back plate 12). In addition, the support member 10 is connected to the back frame main body 8 (back plate 12) at least at two upper and lower locations. Therefore, the posture of the support member 10 relative to the back frame main body 8 (back plate 12) is relatively stable. Therefore, even if the backpack device 2 (or back frame 4) is placed on the loading surface, the backpack device 2 (or back frame 4) is subjected to impact or vibration, and the posture of the support member 10 will not change simply. Therefore, according to the above-mentioned structure, a backpack device 2 (or back frame 4) that is not easy to tip over when placed on the loading surface can be realized.

[0135] In one or more embodiments, the bracket member 10 also includes: a first extension portion 156, which has a rod shape and extends between the left foot 192L and the upper connecting portions 140L, 140R; a second extension portion 158, which has a rod shape and extends between the left foot 192L and the lower connecting portion 154; a third extension portion 160, which has a rod shape and extends between the right foot 192R and the upper connecting portions 140L, 140R; and a fourth extension portion 162, which has a rod shape and extends between the right foot 192R and the lower connecting portion 154.

[0136] When the backpack device 2 is placed on the placement surface, the support member 10 receives forces from the placement surface and the back frame body 8 (back plate 12). At this time, depending on the shape of the support member 10, sometimes a large stress is generated locally in the support member 10. According to the above structure, the forces received by the support member 10 from the placement surface and the back frame body 8 (back plate 12) are dispersed in a well-balanced manner by the first extension part 156, the second extension part 158, the third extension part 160, and the fourth extension part 162. As a result, it is possible to suppress the large stress generated locally in the support member 10.

[0137] In one or more embodiments, when viewed from above, the first extension portion 156 is offset to the left relative to the second extension portion 158. When viewed from above, the third extension portion 160 is offset to the right relative to the fourth extension portion 162.

[0138] According to the above-mentioned structure, the external durability of the bracket member 10 can be improved.

[0139] In one or more embodiments, the bracket member 10 further includes: a left curved portion 148L having a rod shape bent into a letter U shape, connecting the first extension portion 156 and the second extension portion 158; and a right curved portion 148R having a rod shape bent into a letter U shape, connecting the third extension portion 160 and the fourth extension portion 162. The left leg portion 192L is formed on the lower surface of the left curved portion 148L. The right leg portion 192R is formed on the lower surface of the right curved portion 148R.

[0140] Assuming that the left curved portion 148L (or the right curved portion 148R) has a rod shape bent into a letter V shape, the left leg 192L (or the right leg 192R) has a relatively sharp shape. Therefore, when the backpack device 2 is placed on the loading surface, the balance of the bracket member 10 relative to the loading surface is destroyed due to the slight impact or vibration applied to the backpack device 2. As a result, when the backpack device 2 is placed on the loading surface, the backpack device 2 may easily fall over. According to the above-mentioned structure, since the left curved portion 148L (and the right curved portion 148R) have a rod shape bent into a letter U shape, the left leg 192L (or the right leg 192R) has a relatively rounded shape. Therefore, even if the backpack device 2 is impacted or vibrated when the backpack device 2 is placed on the loading surface, the balance of the bracket member 10 relative to the loading surface will not be easily destroyed. Therefore, according to the above-mentioned structure, a backpack device 2 that is less likely to fall over can be realized.

[0141] In one or more embodiments, the backpack device 2 includes a lower connecting member 166 (an example of a connecting member) for connecting the lower connecting portion 154 of the bracket member 10 to the back frame body 8 (back plate 12). The lower connecting member 166 includes an end surface 194, and when the backpack device 2 is placed on the placement surface, the end surface 194 abuts against the placement surface.

[0142] According to the above structure, when the backpack device 2 is placed on the loading surface, the lower side connecting member 166 contacts the loading surface. Therefore, it is not necessary to provide a member that contacts the loading surface when the backpack device 2 is placed on the loading surface separately from the lower side connecting member 166. Thus, the number of components of the backpack device 2 can be reduced.

[0143] In one or more embodiments, the stent member 10 is formed by bending a single rod-shaped member.

[0144] For example, the bracket member 10 can be formed by connecting a plurality of rod-shaped members to each other by welding or the like. However, in this case, it takes time and effort to form the bracket member 10. According to the above-mentioned structure, the bracket member 10 is formed by bending one rod-shaped member. Therefore, the time and effort for forming the bracket member 10 can be relatively reduced.

[0145] In one or more embodiments, the rod-shaped member is a hollow tube.

[0146] In the above-mentioned structure, since the hollow tube is used as the rod-shaped member, the holder member 10 can be made lighter in weight compared with the case where a solid material is used as the rod-shaped member.

[0147] In one or more embodiments, the device is a power supply unit 6 comprising a plurality of rechargeable secondary battery cells.

[0148] According to the above configuration, the user can carry the power supply device 6 to various places. Thus, the user can use the electronic device by carrying the power supply device 6 and supplying power to the electronic device even in a place where the user cannot connect to a commercial power source.

[0149] In one or more embodiments, when viewed from the left, the angle formed by the straight line L1 connecting the upper connecting parts 140L, 140R and the lower connecting part 154 and the straight line L3 connecting the lower connecting part 154 and the left leg 192L is greater than 90 degrees. When viewed from the right, the angle formed by the straight line L4 connecting the upper connecting parts 140L, 140R and the lower connecting part 154 and the straight line L6 connecting the lower connecting part 154 and the right leg 192R is greater than 90 degrees.

[0150] If the upper connecting parts 140L and 140R are offset to the rear compared to the lower connecting part 154, the center of gravity of the backpack device 2 when placed on the loading surface may be too close to the rear, depending on the weight and shape of the power supply device 6. In this case, if the backpack device 2 is slightly tilted to the rear, the backpack device 2 may sometimes topple over. According to the above-mentioned structure, since the upper connecting parts 140L and 140R are offset to the front compared to the lower connecting part 154, the center of gravity of the backpack device 2 when placed on the loading surface is relatively close to the front. As a result, it is possible to prevent the center of gravity of the backpack device 2 when placed on the loading surface from being too close to the rear. Therefore, a backpack device 2 that is less likely to topple over can be realized.

[0151] In one or more embodiments, when viewed from the left, the angle formed by the straight line L2 connecting the upper connecting parts 140L, 140R and the left leg 192L and the straight line L3 connecting the left leg 192L and the lower connecting part 154 is 16 degrees or more. When viewed from the right, the angle formed by the straight line L5 connecting the upper connecting parts 140L, 140R and the right leg 192R and the straight line L6 connecting the right leg 192R and the lower connecting part 154 is 16 degrees or more.

[0152] If the back frame main body 8 (back plate 12) is excessively bent when the backpack device 2 is placed on the loading surface, the center of gravity of the backpack device 2 may be too close to the rear. In this case, if the backpack device 2 is slightly tilted to the rear, the backpack device 2 may sometimes topple over. According to the above-mentioned structure, since the distance between the lower connecting portion 154 and the upper connecting portions 140L, 140R is relatively large, the range in which the bracket member 10 supports the back frame main body 8 (back plate 12) becomes larger. As a result, the bending of the back frame main body 8 (back plate 12) when the backpack device 2 is placed on the loading surface can be suppressed. Therefore, the center of gravity of the backpack device 2 can be suppressed from being too close to the rear, thereby achieving a backpack device 2 that is less likely to topple over.

Claims

1. A backpack device, wherein: The backpack includes: a back frame, which is worn by a user; and equipment, which is mounted on the back frame, The back frame comprises: A pair of shoulder straps for the user to hang on both shoulders; a back panel on which the pair of shoulder straps are mounted and on which the device is mounted; a waist belt for the user to wear around his waist; and A connecting mechanism connects the back plate and the waist belt, The connection mechanism includes an elastic member having a bending rigidity smaller than that of the back plate. A force applied to the connection mechanism from one of the back plate and the waist belt is transmitted to the other of the back plate and the waist belt via the elastic member.

2. The backpack device according to claim 1, wherein: The elastic member is arranged forward of the front surface of the back plate.

3. The backpack device according to claim 2, wherein: The elastic member comprises: a plate portion extending along the rear surface of the waist belt and attached to the waist belt in such a manner that the plate portion does not change its posture relative to the waist belt; a fastening portion, which is arranged at a position rearward of the rear surface of the plate portion and is fastened to the front surface of the back plate by a predetermined fastener; and A connecting portion connects the plate portion and the fastening portion.

4. The backpack device according to claim 3, wherein: The fastening portion is disposed above an upper end of the plate portion.

5. The backpack device according to claim 3 or 4, wherein: The connecting portion includes a connecting surface connected to the front surface of the plate portion and extending upward from the upper end of the plate portion. The connecting surface includes a curved surface that curves so as to move away from a virtual plane obtained by virtually extending the front surface of the plate portion as it moves away from the upper end of the plate portion.

6. The backpack device according to claim 5, wherein: When viewed from the front, the left-right width of the connecting surface decreases monotonically as it moves away from the upper end of the plate portion.

7. The backpack device according to claim 5 or 6, wherein: The connection portion further includes a recessed portion formed by recessing the connection surface from the front toward the rear. The fastening portion is provided at the bottom of the recessed portion.

8. The backpack device according to any one of claims 3 to 7, wherein: The elastic member further includes: a contact surface that contacts the front surface of the back plate; and a guide protrusion that protrudes to a position behind the contact surface. The back plate has a guide hole for receiving the guide protrusion.

9. The backpack device according to any one of claims 3 to 8, wherein: The back plate has a shape that is warped rearward at a portion below a lower end of the fastening portion when viewed from the side.

10. The backpack device according to any one of claims 1 to 9, wherein: The back plate comprises: A back panel body on which the device is installed in a detachable manner; a support plate connected to the waist belt by means of the connection mechanism and capable of changing its position in the up-down direction relative to the back plate body; and A locking mechanism fixes the position of the support plate relative to the back plate body in the up-down direction.

11. The backpack device according to any one of claims 1 to 10, wherein: The device is a power supply apparatus including a plurality of rechargeable secondary battery cells.

12. A backpack for a user to wear to carry an object, wherein: The backpack includes: A pair of shoulder straps for the user to hang on both shoulders; a back plate on which the pair of shoulder straps are mounted and on which the transport object is mounted in a detachable manner; a waist belt for the user to wear around his waist; and A connecting mechanism connects the back plate and the waist belt, The connection mechanism includes an elastic member having a bending rigidity smaller than that of the back plate. A force applied to the connection mechanism from one of the back plate and the waist belt is transmitted to the other of the back plate and the waist belt via the elastic member.

13. A backpack device, wherein: The backpack device includes: a back frame, which is worn by a user; and equipment, which is mounted on the back frame, The back frame comprises: a backpack body, comprising a pair of shoulder straps for the user to hang on both shoulders, and the device is installed on the backpack body; and a support member, which is mounted on the back frame body in a non-rotatable manner, The support member comprises: an upper connecting portion connected to the back frame body; a lower connecting portion connected to the back frame body at a position lower than the upper connecting portion; a left foot portion, which is disposed at the left rear when viewed from the back frame body; and a right foot portion, which is arranged at the right rear when viewed from the back frame body, The backpack equipment can be placed on the placing surface by bringing the lower portion of the backpack body, the left leg, and the right leg into contact with the placing surface.

14. The backpack device according to claim 13, wherein: The support member further comprises: a first extension portion having a rod shape and extending between the left leg portion and the upper connecting portion; a second extension portion having a rod shape and extending between the left leg portion and the lower connecting portion; a third extension portion having a rod shape and extending between the right leg portion and the upper connecting portion; and The fourth extension portion has a rod shape and extends between the right leg portion and the lower connecting portion.

15. The backpack device according to claim 14, wherein: When viewed from above, the first extension portion is offset to the left relative to the second extension portion. When viewed from above, the third extending portion is offset to the right relative to the fourth extending portion.

16. A backpack according to claim 14 or 15, wherein: The support member further comprises: a left curved portion having a rod shape bent into a U-shape and connecting the first extending portion and the second extending portion; and The right side bending part has a rod shape bent into a U-shape, connecting the third extension part and the fourth extension part. The left foot portion is formed on the lower surface of the left curved portion, The right foot portion is formed on the lower surface of the right curved portion.

17. The backpack device according to any one of claims 13 to 16, wherein: The backpack device includes a connecting member for connecting the lower connecting portion of the bracket member to the back frame body. The connecting member includes an end surface that comes into contact with the placement surface when the backpack device is placed on the placement surface.

18. The backpack device according to any one of claims 13 to 17, wherein: The bracket member is formed by bending a rod-shaped member.

19. The backpack device according to claim 18, wherein: The rod-shaped member is a hollow tube.

20. The backpack device according to any one of claims 13 to 19, wherein: The device is a power supply apparatus including a plurality of rechargeable secondary battery cells.

21. The backpack device according to any one of claims 13 to 20, wherein: When viewed from the left, the angle formed by the straight line connecting the upper connecting portion and the lower connecting portion and the straight line connecting the lower connecting portion and the left leg portion is greater than 90 degrees, When viewed from the right, an angle formed by a straight line connecting the upper connecting portion and the lower connecting portion and a straight line connecting the lower connecting portion and the right leg portion is greater than or equal to 90 degrees.

22. A backpack for a user to wear to carry an object, wherein: The backpack includes: a backpack body including a pair of shoulder straps for the user to wear on both shoulders and having the object to be carried mounted thereon in a detachable manner; and a support member, which is mounted on the back frame body in a non-rotatable manner, The support member comprises: an upper connecting portion connected to the back frame body; a lower connecting portion connected to the back frame body at a position lower than the upper connecting portion; a left foot portion, which is disposed at the left rear when viewed from the back frame body; and a right foot portion, which is arranged at the right rear when viewed from the back frame body, The backpack can be placed on the placement surface by causing the lower portion of the backpack body, the left leg, and the right leg to contact the placement surface when the object to be transported is attached to the backpack body.

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