Shouldering unit

Abstract

To disclose a technology that can reduce load on an operator who shoulders a shouldering unit.SOLUTION: A shouldering unit includes a shoulder belt that includes: a back plate extending in a vertical direction; an elastic member fixed to the back plate and extending in the vertical direction; and a storage part, where the storage part has an opening into which an elastic member is inserted and stores part of the elastic member.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a backpack unit. [Background technology]

[0002] Patent Document 1 discloses a backpack unit that includes a back panel extending in the vertical direction and shoulder belts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-128860 Summary of the Invention [Problem to be solved by the invention]

[0004] In the backpack unit of Patent Document 1, when the backpack unit is worn by a worker, the shoulder belt on the worker's shoulder shifts backward, and the upper part of the back plate moves away from the worker's back. In this case, a large force is applied to the front part of the worker's shoulder (near the collarbone) compared to when the upper part of the back plate is in contact with the worker's back. Working in this state is a burden for the worker.

[0005] This specification provides a technique that can reduce the burden on a worker when carrying a backpack unit. [Means for solving the problem]

[0006] This specification discloses a backpack unit, which may include a back panel extending in a vertical direction, an elastic member fixed to the back panel and extending in a vertical direction, and a shoulder belt having a storage section, the storage section having an opening for inserting the elastic member and storing a part of the elastic member.

[0007] In the above-mentioned backpack unit, when the backpack unit is carried by a worker, the shoulder belt bends along the worker's shoulder and the upper part of the back panel is pulled toward the back of the worker. In this case, the back panel is kept in close contact with the back of the worker. Therefore, the upper part of the back panel moves away from the back of the worker, thereby preventing a large force from being applied to the front part of the worker's shoulder. Therefore, the burden on the worker when carrying the backpack unit can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the working implement 2 of the embodiment as viewed from above and rear right. [Diagram 2] 1 is a perspective view of a backpack unit 6 according to an embodiment, seen from above and to the rear right. [Diagram 3] FIG. 2 is a rear view of the mounting plate 10 and back plate 12 of the embodiment. [Figure 4] FIG. 2 is a perspective view of the shoulder belt 14 of the embodiment as viewed from above and rear right. [Diagram 5] 1 is a cross-sectional view of a pocket 40 in an embodiment when the work implement 2 is carried on the worker's back. [Figure 6] FIG. 1 is a left side view of a working implement 102 according to a comparative example being carried on the back of a worker. [Figure 7] FIG. 2 is a left side view of the working implement 2 according to the embodiment when carried on the back of a worker. [Figure 8] FIG. 11 is a diagram comparing the force acting on a worker when a working implement 102 according to a comparative example is carried on the worker's back, and the force acting on a worker when a working implement 2 according to an embodiment is carried on the worker's back. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Representative and non-limiting examples of the present invention are described in detail below with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing preferred examples of the present invention, and is not intended to limit the scope of the present invention. Additionally, the additional features and inventions disclosed can be used separately or together with other features and inventions to provide further improved backpack units.

[0010] In addition, the combinations of features and steps disclosed in the following detailed description are not essential for implementing the present invention in the broadest sense, but are specifically described only to illustrate representative embodiments of the present invention. Furthermore, the various features of the following representative embodiments and the various features described in the claims do not have to be combined in the exact manner of the embodiments described herein or in the order listed in order to provide additional and useful embodiments of the present invention.

[0011] All features described in the specification and / or claims are intended to be disclosed individually and independently of one another as limitations to the specific features described in the original disclosure and claims, apart from the configuration of features described in the examples and / or claims. Furthermore, all numerical ranges and group or aggregate descriptions are intended to disclose intermediate configurations thereof as limitations to the specific features described in the original disclosure and claims.

[0012] In one or more embodiments, the carrying unit may include a back panel extending in an up-down direction, an elastic member fixed to the back panel and extending in an up-down direction, and a shoulder belt having a storage portion, the storage portion having an opening for inserting the elastic member and accommodating a portion of the elastic member.

[0013] In one or more embodiments, the storage section may have an upper covering member and a lower covering member. The storage section may be defined by a first end in a width direction of the storage section and a second end in the width direction, the upper covering member being joined to the lower covering member at the second end opposite to the first end. The storage section may further include a joining portion at a third end on the opening side of the storage section, which joins the upper covering member and the lower covering member between the first end and the second end. The elastic member may be disposed between the first end and the joining portion, or between the second end and the joining portion.

[0014] According to the above-mentioned configuration, the size of the opening in the width direction can be made smaller than in a configuration in which the storage portion does not have a connecting portion. By making the size of the opening in the width direction smaller, it is possible to prevent the elastic member from slipping out of the shoulder belt.

[0015] In one or more embodiments, the storage section may have an upper covering member and a lower covering member. The storage section may be defined by a first end in a width direction of the storage section and a second end in the width direction, the second end being opposite the first end, and the upper covering member being coupled to the lower covering member. The upper covering member may be composed of a double covering member.

[0016] When the backpack unit is carried by an operator, the shoulder belt and the elastic member bend along the operator's shoulder. In this state, the restoring force of the elastic member is applied to the upper covering member. With the above-mentioned configuration, the durability of the upper covering member can be improved.

[0017] In one or more embodiments, the storage section may have an upper covering member and a lower covering member, and the storage section may be defined by coupling the upper covering member to the lower covering member at a first end in a width direction of the storage section, a second end in the width direction opposite the first end, and a fourth end opposite a third end on the opening side of the storage section.

[0018] With the above configuration, the upper part of the back panel is pulled by the back of the worker, compared to a configuration in which the upper covering member is not connected to the lower covering member at the fourth end, which further reduces the burden on the worker when carrying the backpack unit.

[0019] In one or more embodiments, the backing plate and the elastic member may be constructed of different materials.

[0020] According to the above-mentioned configuration, the back plate can be made of a material having a higher rigidity than the elastic member, thereby improving the rigidity of the back plate.

[0021] In one or more embodiments, a backpack-type device may be removably attachable, said backpack-type device being a backpack-type power supply device.

[0022] A backpack-type power supply device is a heavy object. Therefore, the force applied to the front part of the shoulder of the worker is relatively large. The above-mentioned configuration is useful because it can prevent a large force from being applied to the front part of the shoulder of the worker.

[0023] (Example) As shown in FIG. 1, the working equipment 2 includes a backpack-type device 4 and a backpack unit 6. The backpack-type device 4 is detachably attached to the backpack unit 6. In this embodiment, the backpack-type device 4 is a backpack-type power supply device. The backpack-type device 4 weighs 5 kg to 20 kg. The backpack-type device 4 is, for example, a chargeable and dischargeable secondary battery. Charging power is supplied to the backpack-type device 4 from an external power source (not shown) connected to the backpack-type device 4. The backpack-type device 4 is connected to an electric working machine (not shown) having a motor via a connection cord 8, and supplies discharging power to the motor. The backpack-type device 4 allows a worker to use the electric working machine for a long period of time. Hereinafter, the front-rear direction, left-right direction, and up-down direction as seen by a worker standing upright with the working equipment 2 on his / her back are referred to as the front-rear direction, left-right direction, and up-down direction of the working equipment 2.

[0024] As shown in Fig. 2, the backpack unit 6 includes an attachment plate 10, a back plate 12, a pair of left and right shoulder belts 14, and a waist belt 16. The attachment plate 10 and the back plate 12 face the user's back when the user carries the backpack unit 6. The attachment plate 10 is made of an elastic material, for example, a resin material such as HDPE (high density polyethylene). The back plate 12 is made of a metal material.

[0025] The mounting plate 10 is fixed to the front surface of the back plate 12 at the upper portion of the back plate 12. As shown in FIG. 3, the mounting plate 10 includes a base 22, four buckle receiving portions 24, and an assist portion 26. The base 22 includes a flat plate portion 22a and two protruding portions 22b. The left protruding portion 22b extends obliquely upward to the left from the left end portion of the flat plate portion 22a. The right protruding portion 22b extends obliquely upward to the right from the right end portion of the flat plate portion 22a. The buckle receiving portion 24 is provided on the lower right portion of the flat plate portion 22a, the lower left portion of the flat plate portion 22a, and the two protruding portions 22b. The left assist portion 26 extends obliquely upward to the left from the left protruding portion 22b. The right assist portion 26 extends obliquely upward to the right from the right protruding portion 22b. The assisting part 26 may extend parallel to the up-down direction. The size of the assisting part 26 in the width direction (the direction perpendicular to the longitudinal direction of the assisting part 26) is smaller than the size of the protruding part 22b in the width direction. Also, the thickness of the assisting part 26 is smaller than the thickness of the protruding part 22b.

[0026] The back panel 12 includes a device mounting portion 28 and two buckle receiving portions 30. A backpack-type device 4 (see FIG. 1) is detachably attached to the device mounting portion 28.

[0027] The shoulder belt 14 in FIG. 4 can be worn on the shoulders of a worker. One end 14a of the shoulder belt 14 is provided with two buckles 32, and the other end 14b of the shoulder belt 14 is provided with a buckle 34. The buckle 32 provided on one end 14a of the shoulder belt 14 is attached to the buckle receiving portion 24 (see FIG. 3) of the mounting plate 10. The buckle 34 provided on the other end 14b of the shoulder belt 14 is attached to the buckle receiving portion 30 (see FIG. 3) of the back panel 12. The waist belt 16 in FIG. 2 can be worn on the waist of a worker. The waist belt 16 is attached to the lower part of the front surface of the back panel 12 by a screw. When the shoulder belt 14 is worn on the shoulders of the worker, the backpack unit 6 is carried by the worker, and when the waist belt 16 is worn on the worker's waist, the state of the working equipment 2 becomes stable.

[0028] The shoulder belt 14 is provided with a pocket 40 into which the assisting part 26 can be inserted. When one end 14a of the shoulder belt 14 is attached to the mounting plate 10, the pocket 40 is located above the buckle 32. As shown in FIG. 5, the pocket 40 extends along the longitudinal direction of the shoulder belt 14. In the longitudinal direction of the pocket 40, an opening 48 is formed at the end 40a on the buckle 32 side, and an end 40b opposite to the end 40a on the buckle 32 side is closed. Specifically, the end 40b of the pocket 40 is closed at a position rearward of the apex A. The apex A is the uppermost point of the shoulder belt 14 when the backpack unit 6 is carried by the worker. When the shoulder belt 14 is worn on the shoulder of the worker, the assisting part 26 located in the pocket 40 elastically deforms along the shape of the pocket 40. In this state, the end 26a of the assisting part 26 located in the pocket 40 is located rearward of the apex A. The pocket 40 is defined by an upper covering member 42 and a lower covering member 46. The upper covering member 42 is configured as a double covering member. That is, the upper surface side of the pocket 40 is covered in two layers. The upper covering member 42 is sewn to the lower covering member 46 at the right end, the left end, and the end 40b.

[0029] As shown in FIG. 1, a seam S is formed in the shoulder belt 14 to reduce the size of the pocket 40 in the width direction (the direction perpendicular to the longitudinal direction of the shoulder belt 14). The seam S extends from an opening 48 (see FIG. 5) of the pocket 40 toward the inside of the pocket 40 (toward the longitudinal direction of the shoulder belt 14). The seam S is formed by sewing the upper covering member 42 to the lower covering member 46. In this embodiment, the seam S is formed before the assist part 26 is inserted into the pocket 40. In a modified example, the seam S may be formed with the assist part 26 inserted into the pocket 40.

[0030] 6 to 8, the forces acting on the worker when the working implement 102 of the comparative example is carried on the worker's back, and the forces acting on the worker when the working implement 2 of the embodiment is carried on the worker's back will be described. The working implement 102 of the comparative example in Fig. 6 differs from the working implement 2 of the present embodiment in that the mounting plate 110 does not have the assist section 26, and the shoulder belt 114 does not have the pocket 40. In Fig. 8, the magnitude of the forces acting on the worker when the working implement 102 of the comparative example is carried on the worker's back is indicated by open squares, and the forces acting on the worker when the working implement 2 of the embodiment is carried on the worker's back is indicated by black squares.

[0031] 6, when the working equipment 102 of the comparative example is carried on the back of a worker, the shoulder belt 114 does not extend upward relative to the mounting plate 110 and the back plate 112, and therefore the shoulder belt 114 hung on the worker's shoulder shifts backward. In this case, the mounting plate 110 and the back plate 112 are inclined relative to the worker so that the upper parts of the mounting plate 110 and the back plate 112 are moved away from the back of the worker. In this situation, forces F1 and F2 are applied to the front parts of the worker's shoulders (near the collarbone), force F3 is applied to the upper part of the worker's shoulder, and force F4 is applied to the rear part of the worker's shoulder.

[0032] On the other hand, as shown in FIG. 7, when the working implement 2 of the embodiment is carried on the back of the worker, the shoulder belt 14 bends along the worker's shoulder and the upper part of the back plate 12 is pulled toward the back of the worker. Therefore, the mounting plate 10 and the back plate 12 do not incline relative to the worker. In this case, the back plate 12 is maintained in close contact with the back of the worker. Even in this situation, forces F1 and F2 are applied to the front of the worker's shoulder (near the collarbone), force F3 is applied to the upper part of the worker's shoulder, and force F4 is applied to the rear of the worker's shoulder. However, as shown in FIG. 8, when the working implement 2 of the embodiment is carried on the back of the worker, the forces F1 and F2 applied to the front of the worker's shoulder are reduced compared to the forces F1 and F2 when the working implement 102 of the comparative example is carried on the back of the worker.

[0033] In one or more embodiments, as shown in FIG. 1, the carrying unit 6 comprises a back panel 12 extending in the vertical direction, an assist portion 26 (an example of an "elastic member") fixed to the back panel 12 and extending in the vertical direction, and a shoulder belt 14 having a pocket 40 (an example of a "storage portion"), the pocket 40 having an opening 48 for inserting the assist portion 26 and accommodating a portion of the assist portion 26.

[0034] When the backpack unit 6 is carried by a worker, the shoulder belt 14 bends along the worker's shoulder and the upper part of the back panel 12 is pulled toward the back of the worker. In this case, the back panel 12 is kept in close contact with the back of the worker. Therefore, the upper part of the back panel 12 moves away from the back of the worker, thereby preventing a large force from being applied to the front part of the worker's shoulder. Therefore, the burden on the worker when carrying the backpack unit 6 can be reduced.

[0035] In one or more embodiments, as shown in FIG. 5, the pocket 40 has an upper covering member 42 and a lower covering member 46. The pocket 40 is defined by the upper covering member 42 being joined to the lower covering member 46 at the right end (an example of a "first end") and the left end (an example of a "second end") of the pocket 40. As shown in FIG. 1, the pocket 40 further includes a seam S (an example of a "joint") that joins the upper covering member 42 and the lower covering member 46 between the right end and the left end at the end 40a (an example of a "third end") on the opening 48 side of the pocket 40. The right assisting portion 26 is disposed between the right end of the pocket 40 and the seam S, and the left assisting portion 26 is disposed between the left end of the pocket 40 and the seam S.

[0036] According to the above configuration, the size of the opening 48 in the width direction can be reduced compared to a configuration in which the pocket 40 does not have the seam S. By reducing the size of the opening 48 in the width direction, it is possible to prevent the assist portion 26 from slipping off the shoulder belt 14.

[0037] 5, the pocket 40 includes an upper covering member 42 and a lower covering member 46. The pocket 40 is defined by the upper covering member 42 being coupled to the lower covering member 46 at a right end (an example of a "first end") and a left end (an example of a "second end") of the pocket 40. The upper covering member 42 is made up of a double covering member.

[0038] When the backpack unit 6 is carried by a worker, the shoulder belt 14 and the assist part 26 bend along the worker's shoulder. In this state, the restoring force of the assist part 26 is applied to the upper covering member 42. With the above-mentioned configuration, the durability of the upper covering member 42 can be improved.

[0039] In one or more embodiments, the pocket 40 has an upper covering member 42 and a lower covering member 46. The pocket 40 is defined by the upper covering member 42 being coupled to the lower covering member 46 at a right end (an example of a "first end"), a left end (an example of a "second end"), and an end 40b (an example of a "fourth end") opposite an end 40a (an example of a "third end") on the opening 48 side of the pocket 40.

[0040] According to the above configuration, the upper part of the back panel 12 is pulled toward the back of the worker, compared to a configuration in which the upper covering member 42 is not connected to the lower covering member 46 at the end portion 40b. Therefore, the burden on the worker when carrying the backpack unit 6 can be further reduced.

[0041] In one or more embodiments, the back plate 12 and the assist portion 26 are constructed from different materials.

[0042] According to the above configuration, the back plate 12 can be made of a material having higher rigidity than the assist portion 26. Therefore, the rigidity of the back plate 12 can be improved.

[0043] In one or more embodiments, as shown in FIG. 1, backpack unit 6 is capable of removably mounting backpack device 4, which is a backpack-type power device.

[0044] A backpack-type power supply device is a heavy object. For example, the weight of a backpack-type power supply device is about 10 kg. Therefore, the force applied to the front of the shoulder of the worker is relatively large. According to the above configuration, it is possible to suppress the application of a large force to the front of the shoulder of the worker, which is useful.

[0045] (First Modification) The "backpack-type device" is not limited to a backpack-type power supply device, and may be a backpack-type power working machine. Examples of the power working machine include a blower, a mist blower, a dust collector, a grass cutter, and a sprayer. The power working machine may be a power working machine having an engine, or a power working machine having a motor.

[0046] (Second Modification) The seam S does not have to be formed in the pocket 40 of the shoulder belt 14.

[0047] (Third Modification) The "joint" is not limited to the stitch S, but may be a rivet, a clip, a hook, or the like.

[0048] (Fourth Modification) The work equipment may be provided with a storage section having openings formed at the end on the buckle 32 side and at the end opposite the end on the buckle 32 side, instead of the pocket 40. In other words, the upper covering member 42 does not have to be connected to the lower covering member 46 at the end opposite the end on the buckle 32 side.

[0049] (Fifth Modification) The assist portion 26 and the back plate 12 may be made of the same material. In this modification, the back plate 12 is also made of a resin material such as HDPE (high density polyethylene).

[0050] (Sixth Modification) In the embodiment, the mounting plate 10 includes the assisting portion 26, but the mounting plate 10 and the assisting portion 26 may be separate bodies. For example, the assisting portion 26 may be fixed to the mounting plate 10.

[0051] (Seventh Modification) The backpack-type device may have a back plate and an assisting part. For example, the rear wall of the housing of the backpack-type device may form the "back plate," and the assisting part may be fixed to the "back plate." [Explanation of symbols]

[0052] 2: work equipment, 4: backpack-type device, 6: backpack unit, 8: connection cord, 10: mounting plate, 12: back plate, 14: shoulder belt, 14a: one end, 14b: other end, 16: waist belt, 22: base, 22a: flat plate, 22b: protruding portion, 24: buckle receiving portion, 26: assist portion, 26a: end portion, 28: device mounting portion, 30: buckle receiving portion, 32: buckle, 34: buckle, 40: pocket, 42: upper covering member, 46: lower covering member, 48: opening, 102: work equipment, 110: mounting plate, 112: back plate, 114: shoulder belt, S: stitching

Claims

1. A back panel extending in the vertical direction; an elastic member fixed to the back plate and extending in the vertical direction; a shoulder belt having a storage portion, the storage portion having an opening for inserting the elastic member and storing a portion of the elastic member; A backpack unit equipped with:

2. The housing portion has an upper covering member and a lower covering member, the storage section is defined by a first end in a width direction of the storage section and a second end in the width direction, the second end being opposite to the first end, and the upper covering member being coupled to the lower covering member at the second end, the housing portion further includes a connecting portion at a third end portion on the opening side of the housing portion, the connecting portion connecting the upper covering member and the lower covering member between the first end portion and the second end portion, The backpack unit according to claim 1 , wherein the elastic member is disposed between the first end and the connecting portion or between the second end and the connecting portion.

3. The housing portion has an upper covering member and a lower covering member, the storage section is defined by a first end in a width direction of the storage section and a second end in the width direction, the second end being opposite to the first end, and the upper covering member being coupled to the lower covering member at the second end, 2. The backpack unit according to claim 1, wherein the upper covering member is configured as a double covering member.

4. The housing portion has an upper covering member and a lower covering member, 2. The backpack unit of claim 1, wherein the storage section is defined by connecting the upper covering member to the lower covering member at a first widthwise end of the storage section, a second widthwise end opposite the first end, and a fourth widthwise end opposite a third end on the opening side of the storage section.

5. The backpack unit according to claim 1 , wherein the back panel and the elastic member are made of different materials.

6. A backpack-type device can be detachably attached to the backboard, The backpack unit according to claim 1 , wherein the backpack-type device is a backpack-type power supply device.

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