Shoulder strap attachment and backpack

Abstract

To provide a shoulder strap attachment and a backpack equipped therewith that enable the backpack to be easily stored in a narrow space.SOLUTION: A shoulder strap attachment 4 includes: a main body 4a attachable to a back support portion 1a of a backpack 100; and a pair of connectors 4b rotatably attached to the main body 4a and connectable to respective upper ends of a pair of shoulder straps 3. Each of the connectors 4b in the pair is rotatable in the opposite direction with respect to the main body 4a along the back support portion 1a between a first state, in which it is rotated upward, and a second state, in which it is rotated downward. In addition, the connectors are engageable with the main body 4a in both the first and second states.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a backpack belt attachment and a backpack.

Background Art

[0002] Conventionally, in a schoolbag, a pair of backpack belts are fixed to a storage portion. For example, in the schoolbag described in Japanese Patent Application Laid-Open No. 2015-181551 (Patent Document 1), a pair of backpack belts are fixed to the storage portion so as to rise from the storage portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the schoolbag described in the above publication, a pair of backpack belts are fixed to the storage portion so as to rise from the storage portion. Therefore, since a pair of backpack belts bulge in the depth direction (front-rear direction) of the backpack, it is difficult to save space for the pair of backpack belts. For this reason, it is difficult to store the schoolbag in a narrow place such as a locker.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a backpack belt attachment that makes it easy to store a backpack in a narrow place and a backpack equipped with the same.

Means for Solving the Problems

[0006] The backpack belt attachment of the present invention is a backpack belt attachment for attaching a pair of backpack belts to the backrest portion of a backpack. The backpack belt attachment includes a main body portion that can be attached to the backrest portion of the backpack, and a pair of connecting bodies that can connect the upper ends of the pair of backpack belts and are rotatably attached to the main body portion. Each of the pair of connecting bodies is configured to be rotatable between a first state in which it rotates upward with respect to the main body portion by rotating in opposite directions along the backrest portion and a second state in which it rotates downward, and is configured to be engageable with the main body portion in the first state and the second state.

Effect of the Invention

[0007] According to the backpack belt attachment of the present invention, it becomes easy to store the backpack in a narrow place.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Embodiments for Carrying out the Invention

[0009] Hereinafter, embodiments will be described with reference to the drawings. In the following, the same or corresponding parts will be denoted by the same reference numerals, and duplicate descriptions will not be repeated.

[0010] (Embodiment 1) The backpack 100 in Embodiment 1 is applicable to various backpacks such as school bags and rucksacks. In Embodiment 1, the backpack 100 is a school bag as an example.

[0011] With reference to FIGS. 1 to 5, the configuration of the backpack 100 in Embodiment 1 will be described.

[0012] As shown in FIGS. 1 and 2, the backpack 100 in Embodiment 1 includes a storage portion 1, a lid portion 2, a pair of backpack straps 3, a backpack strap fixture 4, a connecting member 5, a secondary storage portion 6, and a pocket portion 7. Note that FIG. 2 shows only one of the backpack straps 32 and not the other backpack strap 31 in order to make the backpack strap 3 easier to view.

[0013] The storage portion 1 has a backrest portion 1a, a bottom portion 1b, a front portion 1c, and a pair of side portions 1d. A pair of backpack straps 3 are attached to the backrest portion 1a by the backpack strap fixture 4. The backrest portion 1a is the portion that faces the user's back when the user wears the backpack 100. The bottom portion 1b is the portion that constitutes the bottom of the storage portion 1. The front portion 1c is the portion that faces the backrest portion 1a. The pair of side portions 1d are the portions arranged on the left and right sides of each of the backrest portion 1a and the front portion 1c.

[0014] The storage portion 1 has an opening at the upper end. The storage portion 1 has an internal space communicating with the opening. The internal space is a space surrounded by the inner peripheral surfaces of the backrest portion 1a, the bottom portion 1b, the front portion 1c, and the pair of side portions 1d. The storage portion 1 is configured to be able to store textbooks and the like in the internal space through the opening. The lid portion 2 is connected to the upper end of the backrest portion 1a of the storage portion 1 and is configured to be able to open and close the opening with the upper end of the backrest portion 1a as the base end.

[0015] A secondary storage portion 6 is disposed outside the front portion 1c. A pocket portion 7 is disposed outside the secondary storage portion 6. The secondary storage portion 6 and the pocket portion 7 are configured to be able to store stationery and the like. The secondary storage portion 6 and the pocket portion 7 are disposed between the lid portion 2 and the front portion 1c when the lid portion 2 is closed.

[0016] The pair of backpack straps 3 are configured to be mounted at least on the user's shoulders when the user wears the backpack 100. Each of the pair of backpack straps 3 is connected to the backrest portion 1a of the storage portion 1 via a backpack strap fixture 4. The upper end of each of the pair of backpack straps 3 is attached to the backpack strap fixture 4. Also, each of the pair of backpack straps 3 is connected to the bottom portion 1b of the storage portion 1 via a connecting member 5. The lower end of each of the pair of backpack straps 3 is attached to the connecting member 5.

[0017] Each of the pair of backpack straps mainly has an upper belt 3a, a lower belt 3b, a fastener 3c, a cover member 3d, and an annular member 3e. A plurality of belt holes 3a1 are provided in the upper belt 3a. The upper end of the upper belt 3a is attached to the backpack strap fixture 4. The lower end of the lower belt 3b is attached to the connecting member 5.

[0018] The upper belt 3a and the lower belt 3b are connected by a fastener 3c. The length of the backpack strap 3 can be adjusted by the fastener 3c. The fastener 3c has a pin 3c1 and a fastener body 3c2. The fastener 3c is attached to the upper end of the lower belt 3b. The fastener 3c is configured to lock the pin 3c1 in the belt hole 3a1 with the upper belt 3a inserted through the fastener body 3c2.

[0019] The cover member 3d is configured to be able to insert the upper belt 3a. The cover member 3d is disposed between the upper belt 3a and the fastener body 3c2 in a state where the upper belt 3a is inserted. The annular member 3e is attached to the lower belt 3b. The annular member 3e is configured to be able to insert the upper belt 3a connected to the lower belt 3b by the fastener 3c.

[0020] The backpack belt fixture 4 is for attaching a pair of backpack belts 3 to the accommodating portion 1. The backpack belt fixture 4 is attached to the upper end portion of the backrest portion 1a of the accommodating portion 1. The backpack belt fixture 4 includes a main body portion 4a and a pair of connecting bodies 4b. The main body portion 4a is attached to the upper end portion of the backrest portion 1a of the accommodating portion 1. A pair of connecting bodies 4b are attached to the main body portion 4a.

[0021] As shown in FIGS. 1 and 3, the pair of connecting bodies 4b are rotatably attached to the main body portion 4a. In a state where the pair of connecting bodies 4b are rotated upward, the pair of connecting bodies 4b protrude upward from the main body portion 4a. In a state where the pair of connecting bodies 4b are rotated downward, the pair of connecting bodies 4b protrude downward from the main body portion 4a. The upper ends of the pair of backpack belts 3 are attached to the respective tips of the pair of connecting bodies 4b. The upper ends of the pair of backpack belts 3 are fixed to the respective tips of the pair of connecting bodies 4b by rivets.

[0022] As shown in FIGS. 2 and 4, the connecting member 5 is for attaching the backpack belt 3 to the accommodating portion 1 together with the backpack belt fixture 4. The connecting member 5 is attached to the bottom portion 1b. The lower ends of the pair of backpack belts 3 are attached to the connecting member 5.

[0023] The connecting member 5 has a pair of tumblers 5a, a support portion 5b, a fixing portion 5c, and an operation portion 5d. The pair of tumblers 5a are rotatably attached to the support portion 5b. The pair of tumblers 5a are rotatable along the surface of the support portion 5b. The lower ends of the pair of backpack belts 3 are attached to the respective ones of the pair of tumblers 5a.

[0024] The support part 5b supports a pair of Daruma cans 5a on both sides in the longitudinal direction. The support part 5b is configured to be able to support a fixing part 5c at the center in the longitudinal direction. The fixing part 5c is attached to the tip of the lid part 2. The fixing part 5c is configured to be fixed to the center of the support part 5b by an operating part 5d. The operating part 5d is configured to be rotatable with respect to the support part 5b. The operating part 5d is configured to be insertable into a long hole provided in the fixing part 5c. When the operating part 5d rotates with the operating part 5d inserted into the long hole of the fixing part 5c, the fixing part 5c is fixed to the support part 5b.

[0025] As shown in FIGS. 3 and 4, when each of the pair of connecting bodies 4b rotates downward with respect to the main body part 4a, each of the pair of backpack belts 3 is suppressed from protruding in the depth direction (front-rear direction) of the backpack 100. For this reason, the pair of backpack belts 3 is made more space-saving. Also, in this state, each of the pair of backpack belts 3 is twisted.

[0026] As shown in FIG. 5, when each of the pair of connecting bodies 4b rotates downward with respect to the main body part 4a and the pair of Daruma cans 5a rotates, the twist of the pair of backpack belts 3 is eliminated.

[0027] Mainly with reference to FIGS. 6 to 14, the configuration of the backpack belt fixture 4 according to Embodiment 1 will be described.

[0028] As shown in FIGS. 1 and 6, the backpack belt fixture 4 is for attaching a pair of backpack belts 3 to the backrest part 1a of the backpack 100. The backpack belt fixture 4 includes a main body part 4a and a pair of connecting bodies 4b. The main body part 4a can be attached to the backrest part 1a of the backpack 100. The pair of connecting bodies 4b can connect the upper ends of the pair of backpack belts 3 respectively.

[0029] As shown in FIGS. 1, 6 to 8, the main body portion 4a includes a case 4a1, a pair of movable lever portions 4a2, and a rotation axis A. The case 4a1 is configured to accommodate the base portions of the pair of connectors 4b. The case 4a1 is configured to accommodate the pair of lever portions 4a2. A pair of holes H are provided on the surface of the case 4a1.

[0030] The pair of connectors 4b are rotatably attached to the main body portion 4a. Each of the pair of connectors 4b is rotatably configured to rotate upward and downward with respect to the main body portion 4a by rotating in opposite directions along the abutting portion 1a. Each of the pair of connectors 4b is rotatably configured about the rotation axis A of the main body portion 4a. Each of the pair of connectors 4b is rotatably configured in the in-plane direction of the surface of the abutting portion 1a. The tip of each of the pair of connectors 4b moves outside the main body portion 4a. Each of the pair of connectors 4b is located on the opposite side of the main body portion 4a in the first state and the second state. In the present embodiment, it is preferable that each of the pair of connectors 4b rotates at an angle of 160 degrees or more and 180 degrees or less in the first state and the second state.

[0031] Each of the pair of lever portions 4a2 is configured to engage with each of the pair of connectors 4b by moving away from each other, and is configured to disengage from each of the pair of connectors 4b by moving closer to each other. Groove portions R are provided on the pair of lever portions 4a2. Each of the groove portions R provided on the pair of lever portions 4a2 is exposed from each of the pair of holes H provided in the case 4a1. When the user puts a finger into the groove portions R of the pair of lever portions 4a2 and moves the pair of lever portions 4a2 closer to each other, the engagement between the pair of lever portions 4a2 and the pair of connectors 4b is released.

[0032] As shown in FIGS. 9 to 14, each of the pair of connectors 4b is configured to be engageable with the main body portion 4a. The case 4a1 includes a front member 4a11 and a rear member 4a12. The rotation axis A extends in the direction in which the front member 4a11 and the rear member 4a12 face each other. That is, the axial direction of the rotation axis A is the direction in which the front member 4a11 and the rear member 4a12 face each other. FIGS. 9, 11, and 13 show the state in which the front member 4a11 is removed from the rear member 4a12. In FIGS. 10, 12, and 14, for convenience of explanation, hatching is not shown in the cross section. Also, in FIGS. 10, 12, and 14, for convenience of explanation, a holding member M for holding the backpack belt fixture 4 is shown.

[0033] As shown in FIGS. 9 and 13, each of the pair of connectors 4b is configured to be engageable with the main body portion 4a in the first state and the second state. Also, in the present embodiment, as shown in FIG. 11, each of the pair of connectors 4b is configured to be engageable with the main body portion 4a in a state intermediate between the first state and the second state.

[0034] As shown in FIGS. 9 and 13, when each of the pair of connectors 4b rotates upward with respect to the main body portion 4a and is engaged with the main body portion 4a, each of the pair of connectors 4b engages more strongly with the main body portion 4a than in the state where each of the pair of connectors 4b rotates downward with respect to the main body portion 4a and is engaged with the main body portion 4a.

[0035] Each of the pair of lever portions 4a2 includes a convex portion 4a21 protruding in opposite directions from each other and a recessed portion 4a22 provided at the tip of the convex portion 4a21. The convex portions 4a21 of each of the pair of lever portions 4a2 protrude outward. The recessed portions 4a22 of each of the pair of lever portions 4a2 are recessed inward.

[0036] The main body portion 4a includes a spring 4a3. The spring 4a3 is disposed between a pair of lever portions 4a2. The spring 4a3 biases the pair of lever portions 4a2 in a direction in which the pair of lever portions 4a2 move away from each other. The spring 4a3 is configured to press each of the pair of lever portions 4a2 against each of the pair of connectors 4b by an urging force. In the present embodiment, the spring 4a3 is a coil spring.

[0037] Each of the pair of connectors 4b includes a concave portion 4b1 engageable with a convex portion 4a21 and a protruding portion 4b2 provided at an interval from the concave portion 4b1 and engageable with a recessed portion 4a22. The protruding portion 4b2 is provided at an interval from the concave portion 4b1 in the direction in which the pair of connectors 4b rotate. The concave portion 4b1 of each of the pair of connectors 4b is recessed toward the rotation axis A to which each of the pair of connectors 4b is attached. The protruding portion 4b2 of each of the pair of connectors 4b protrudes toward the side opposite to the rotation axis A to which each of the pair of connectors 4b is attached. The protruding portion 4b2 has a lower engaging protruding portion 4b21.

[0038] In a state where each of the pair of connectors 4b rotates upward with respect to the main body portion 4a and is engaged with the main body portion 4a, the convex portion 4a21 and the concave portion 4b1 are engaged. In a state where each of the pair of connectors 4b rotates downward with respect to the main body portion 4a and is engaged with the main body portion 4a, the recessed portion 4a22 and the lower engaging protruding portion 4b21 are engaged. The contact area between the convex portion 4a21 and the concave portion 4b1 is larger than the contact area between the recessed portion 4a22 and the lower engaging protruding portion 4b21.

[0039] When the convex portion 4a21, the recessed portion 4a22, the concave portion 4b1, and the protruding portion 4b2 are viewed from a direction orthogonal to the direction in which the pair of lever portions 4a2 move, the convex portion 4a21 and the concave portion 4b1 are configured in a rectangular shape, and the recessed portion 4a22 and the protruding portion 4b2 are configured in a semicircular shape. The radius of the rounding of the corners of the convex portion 4a21 and the concave portion 4b1 is smaller than the radius of the rounding of the corners of the recessed portion 4a22 and the protruding portion 4b2. In the present embodiment, the convex portion 4a21 and the concave portion 4b1 have corners, and the recessed portion 4a22 and the protruding portion 4b2 do not have corners.

[0040] The pair of lever portions 4a2 and the pair of connectors 4b are configured to generate a sound when the recessed portions 4a22 of the pair of lever portions 4a2 collide with the protruding portions 4b2 of the pair of connectors 4b due to the elasticity of the spring 4a3.

[0041] Next, the operation and effects of Embodiment 1 will be described. According to the backpack belt fixture 4 in Embodiment 1, each of the pair of connectors 4b is configured to be rotatable between a first state in which it rotates upward with respect to the main body portion 4a and a second state in which it rotates downward with respect to the main body portion 4a by rotating in opposite directions along the backrest portion 1a, and is configured to be engageable with the main body portion 4a in the first state and the second state. Therefore, when each of the pair of connectors 4b rotates in opposite directions along the backrest portion 1a and rotates downward with respect to the main body portion 4a, it is possible to suppress the pair of backpack belts 3 connected to the pair of connectors 4b from protruding in the depth direction (front-rear direction) of the backpack 100. For this reason, the pair of backpack belts 3 can be made more space-saving. As a result, it becomes easier to store the backpack 100 in a narrow space. Thus, it is possible to make it easier to put the backpack 100 into a locker or the like. In addition, it is possible to suppress damage to the backpack belt 3 when the backpack 100 comes into contact with a locker or the like when putting the backpack 100 into a locker or the like.

[0042] According to the backpack belt fixture 4 in Embodiment 1, each of the pair of lever portions 4a2 is configured to engage with each of the pair of connectors 4b by moving away from each other, and is configured to disengage from each of the pair of connectors 4b by moving closer to each other. Therefore, when each of the pair of lever portions 4a2 moves away from each other, the main body portion 4a and the pair of connectors 4b are engaged. Also, when each of the pair of lever portions 4a2 moves closer to each other, the engagement with each of the pair of connectors 4b is released. For this reason, the pair of lever portions 4a2 can engage the main body portion 4a with the pair of connectors 4b, or release the connection between the main body portion 4a and the pair of connectors 4b.

[0043] According to the backpack belt fixture 4 in Embodiment 1, each of the pair of connectors 4b engages more strongly with the main body portion 4a when each of the pair of connectors 4b rotates upward with respect to the main body portion 4a and is engaged with the main body portion 4a than when each of the pair of connectors 4b rotates downward with respect to the main body portion 4a and is engaged with the main body portion 4a. When each of the pair of connectors 4b rotates upward with respect to the main body portion 4a and is engaged with the main body portion 4a, since the backpack 100 is carried by the user, it is preferable that each of the pair of connectors 4b engages firmly with the main body portion 4a. On the other hand, when each of the pair of connectors 4b rotates downward with respect to the main body portion 4a and is engaged with the main body portion 4a, it is preferable that each of the pair of connectors 4b can easily rotate upward with respect to the main body portion 4a for the user to carry the backpack 100. Therefore, when each of the pair of connectors 4b rotates upward with respect to the main body portion 4a and is engaged with the main body portion 4a, each of the pair of connectors 4b can engage firmly with the main body portion 4a when the backpack 100 is carried by the user, and when each of the pair of connectors 4b rotates downward with respect to the main body portion 4a and is engaged with the main body portion 4a, each of the pair of connectors 4b can be made to easily rotate upward with respect to the main body portion 4a for the user to carry the backpack 100.

[0044] According to the backpack belt fixture 4 in Embodiment 1, when each of the pair of connectors 4b is rotated upward with respect to the main body 4a and engaged with the main body 4a, the convex portion 4a21 and the concave portion 4b1 are engaged. When each of the pair of connectors 4b is rotated downward with respect to the main body 4a and engaged with the main body 4a, the recessed portion 4a22 and the lower engaging protrusion 4b21 are engaged. The contact area between the convex portion 4a21 and the concave portion 4b1 is larger than the contact area between the recessed portion 4a22 and the lower engaging protrusion 4b21. Therefore, each of the pair of connectors 4b can be engaged with the main body 4a more strongly when each of the pair of connectors 4b is rotated upward with respect to the main body 4a and engaged with the main body 4a than when each of the pair of connectors 4b is rotated downward with respect to the main body 4a and engaged with the main body 4a.

[0045] According to the backpack belt fixture 4 in Embodiment 1, when the convex portion 4a21, the recessed portion 4a22, the concave portion 4b1, and the protrusion 4b2 are viewed from a direction orthogonal to the direction in which the pair of lever portions 4a2 move, the convex portion 4a21 and the concave portion 4b1 are configured in a rectangular shape, and the recessed portion 4a22 and the protrusion 4b2 are configured in a semicircular shape. Therefore, each of the pair of connectors 4b can be engaged with the main body 4a more strongly when each of the pair of connectors 4b is rotated upward with respect to the main body 4a and engaged with the main body 4a than when each of the pair of connectors 4b is rotated downward with respect to the main body 4a and engaged with the main body 4a.

[0046] According to the backpack belt fixture 4 in Embodiment 1, the pair of lever portions 4a2 and the pair of connectors 4b are configured such that the recessed portion 4a22 of the pair of lever portions 4a2 collides with the protrusion 4b2 of the pair of connectors 4b due to the elasticity of the spring 4a3 to generate a sound. Therefore, a sound can be generated when each of the pair of connectors 4b rotates with respect to the main body 4a.

[0047] According to the backpack 100 in Embodiment 1, a pair of backpack belts 3 are attached to the backrest portion 1a by the backpack belt fixture 4. Therefore, by rotating the backpack belt fixture 4, the pair of backpack belts 3 can be made more space-saving. As a result, it becomes easier to store the backpack 100 in a narrow space.

[0048] According to the backpack 100 in Embodiment 1, the lower ends of the pair of backpack belts 3 are attached to the respective pair of Daruma cans 5a. Therefore, each of the pair of connecting bodies 4b rotates downward with respect to the main body portion 4a, and by rotating the pair of Daruma cans 5a, the twisting of the pair of backpack belts 3 can be eliminated. For this reason, it is possible to further suppress the pair of backpack belts 3 connected to the pair of connecting bodies 4b from protruding in the depth direction (front-rear direction) of the backpack 100, respectively. For this reason, the pair of backpack belts 3 can be made even more space-saving. As a result, it becomes even easier to store the backpack 100 in a narrow space.

[0049] (Embodiment 2) The backpack 100 in Embodiment 2 has the same configuration and effects as the backpack 100 according to Embodiment 1 unless otherwise specified. In Embodiment 2, the backpack 100 is a rucksack as an example.

[0050] With reference to FIGS. 15 to 18, the configuration of the backpack 100 in Embodiment 2 will be described.

[0051] As shown in FIGS. 15 and 16, the backpack 100 in Embodiment 2 includes a storage portion 1, a lid portion 2, a pair of backpack belts 3, a backpack belt fixture 4, a pocket portion 7, a connecting member 10, a pair of side pockets 11, and a handle 12.

[0052] In this embodiment, a pocket portion 7 is disposed outside the front portion 1c. A pair of side pockets 11 are respectively disposed on each of the pair of side portions 1d. The side pocket 11 is configured to be able to accommodate stationery and the like.

[0053] Each of the pair of backpack belts 3 is connected to the lower end portion of the backrest portion 1a of the accommodating portion 1 via a connecting member 10. The lower end of each of the pair of backpack belts 3 is attached to the connecting member 10. Each of the pair of backpack belts mainly has an upper belt 3a, a lower belt 3b, and a ladder lock 3f. The upper end of the upper belt 3a is attached to a backpack belt fixture 4. The lower end of the lower belt 3b is attached to the connecting member 10. The upper belt 3a and the lower belt 3b are connected by the ladder lock 3f. The length of the backpack belt 3 can be adjusted by the ladder lock 3f. In this embodiment, the handle 12 is connected to the lid portion 2.

[0054] As shown in FIGS. 17 and 18, when each of the pair of connectors 4b is rotated downward with respect to the main body portion 4a, each of the pair of backpack belts 3 is suppressed from protruding in the depth direction (front-rear direction) of the backpack 100. For this reason, the pair of backpack belts 3 is made more space-saving.

[0055] Also, in this state, the lower belt 3b of the pair of backpack belts 3 is twisted. In this embodiment, since the thickness of the lower belt 3b of the pair of backpack belts 3 is thin, even if the lower belt 3b is twisted, it is suppressed from protruding in the depth direction (front-rear direction) of the backpack 100.

[0056] Also in the backpack belt fixture 4 in Embodiment 2, each of the pair of connecting bodies 4b rotates in opposite directions along the backrest portion 1a and rotates downward with respect to the main body portion 4a, so that the pair of backpack belts 3 connected to the pair of connecting bodies 4b can be suppressed from protruding in the depth direction (front-rear direction) of the backpack 100. For this reason, the pair of backpack belts 3 can be made space-saving. Thereby, it becomes easy to store the backpack 100 in a narrow place.

[0057] Further, also in the backpack 100 in Embodiment 2, the pair of backpack belts 3 are attached to the backrest portion 1a by the backpack belt fixture 4. Therefore, the pair of backpack belts 3 can be made space-saving by the backpack belt fixture 4. Thereby, it becomes easy to store the backpack 100 in a narrow place.

[0058] The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Explanation of Reference Numerals

[0059] 1 Storage portion, 1a Backrest portion, 1b Bottom portion, 1c Front portion, 1d Side portion, 2 Lid portion, 3 Backpack belt, 4 Backpack belt fixture, 4a Main body portion, 4a1 Case, 4a2 Lever portion, 4a21 Protrusion, 4a22 Depression, 4b Connecting body, 4b1 Recess, 4b2 Protrusion, 5 Connecting member, 5a Daruma can, 5b Support portion, 100 Backpack.

Claims

1. A backpack belt attachment for attaching a pair of backpack belts to a backrest portion of a backpack, comprising: a main body portion attachable to the backrest portion of the backpack; a pair of connecting bodies each connectable to an upper end of each of the pair of backpack belts and rotatably attached to the main body portion; Each of the pair of connecting bodies is configured to be rotatable between a first state in which it rotates upward with respect to the main body portion and a second state in which it rotates downward with respect to the main body portion by rotating in opposite directions along the backrest portion, and is configured to be engageable with the main body portion in the first state and the second state. The backpack belt attachment.

2. The main body portion includes a pair of movable lever portions, Each of the pair of lever portions is configured to engage with each of the pair of connecting bodies by moving away from each other, and is configured to disengage from each of the pair of connecting bodies by moving closer to each other. The backpack belt attachment according to claim 1.

3. Each of the pair of connecting bodies engages more strongly with the main body portion when each of the pair of connecting bodies rotates upward with respect to the main body portion and is engaged with the main body portion than when each of the pair of connecting bodies rotates downward with respect to the main body portion and is engaged with the main body portion. The backpack belt attachment according to claim 2.

4. Each of the pair of lever portions includes a convex portion protruding in opposite directions from each other and a recess provided at a tip of the convex portion, Each of the pair of connecting bodies includes a concave portion engageable with the convex portion and a protruding portion provided at an interval from the concave portion and engageable with the recess, The protruding portion has a lower engagement protruding portion, When each of the pair of connecting bodies rotates upward with respect to the main body portion and is engaged with the main body portion, the convex portion and the concave portion are engaged, In a state where each of the pair of connecting bodies rotates downward with respect to the main body portion and is engaged with the main body portion, the recessed portion and the lower engaging protrusion are engaged with each other. The contact area between the convex portion and the concave portion is larger than the contact area between the recessed portion and the lower engaging protrusion. The backpack belt attachment according to claim 3.

5. When the convex portion, the recessed portion, the concave portion, and the protrusion are viewed from a direction orthogonal to the direction in which the pair of lever portions move, The convex portion and the concave portion are configured in a rectangular shape. The recessed portion and the protrusion are configured in a semi-circular shape. The backpack belt attachment according to claim 4.

6. The main body portion includes a spring. The spring is disposed between the pair of lever portions. The pair of lever portions and the pair of connecting bodies are configured such that the recessed portions of the pair of lever portions collide with the protrusions of the pair of connecting bodies due to the elasticity of the spring to generate a sound. The backpack belt attachment according to claim 4.

7. The backrest portion, The pair of backpack belts, And the backpack belt attachment according to any one of claims 1 to 6, A backpack in which the pair of backpack belts are attached to the backrest portion by the backpack belt attachment.

8. A bottom portion, And a connecting member attached to the bottom portion, The connecting member includes a pair of Daruma dolls and a support portion. The pair of Daruma dolls are rotatably attached to the support portion. The lower ends of the pair of backpack belts are respectively attached to the pair of Daruma dolls. The backpack according to claim 7.

Images