JP5873903B2 - Portable power bag - Google Patents

Description

  The present invention relates to a portable power supply bag used as a power source for rechargeable electric tools such as pruning shears and hedge clippers.

  In rechargeable electric tools such as pruning shears and hedge clippers, the battery pack that is the power source is separated from the tool body to make it portable for the operator to reduce the burden on the operator and improve operability. A form is known in which a battery pack and a power tool are connected by a relay cord to obtain a power source. For example, in Patent Document 1, a second case containing a control circuit is detachably coupled to an upper part of a case containing a battery pack in which a plurality of nickel-cadmium batteries are connected in series, and at the edge of each case. A battery pack is disclosed in which a through-hole of a belt is formed, and it can be carried on the waist or on the back by selecting the through-hole. Patent Document 2 also discloses a portable power source that can be carried on the back by coupling a shoulder band to a case having a plurality of storage batteries inside.

JP 2000-164182 A Japanese Utility Model Publication 4-101357

However, since the conventional battery pack and the portable power source are both formed in a hard case, the fit to the body when carried is insufficient, and the usability is poor when used for a long time. There is a risk.
By the way, as a secondary battery, a lithium ion battery which can be reduced in size and weight with the same capacity, has a small memory effect, and has a good self-discharge characteristic, instead of a conventional nickel-cadmium battery or the like, is widely used. However, in a rechargeable electric tool, a form in which a lithium ion battery is used as a battery pack that is directly attached to a tool body is common, and is not used as a separate portable power source. Therefore, even if the rechargeable power tool can be used as a portable power source, a small and light lithium-ion battery can improve workability.

  Therefore, the present invention provides a portable power supply bag that has a good fit when carried and has excellent usability, and that can suitably use a lithium ion battery as a portable power source for a rechargeable electric tool. It is intended.

In order to achieve the above object, the invention described in claim 1 is a portable power supply bag, wherein a cushion portion is provided on the front surface of a back plate having a pair of left and right shoulder belts, and a lithium ion battery is used. A battery pack for a rechargeable power tool and a mounting unit to which the battery pack is detachably connected are accommodated, while a plurality of cushion portions are provided at predetermined intervals, and the shoulder belt As viewed from above, the upper side swells to the left and right and the lower side swells to the left and right inside. Are respectively connected to the lower side of the same side .
In order to achieve the above object, the invention according to claim 2 is a portable power supply bag, wherein a cushion portion is provided on the front surface of a back plate having a pair of left and right shoulder belts, and a lithium ion battery is used. A battery pack for a rechargeable power tool and a mounting unit to which the battery pack is detachably connected are accommodated, and a plurality of cushion portions are provided at predetermined intervals, and a lower front portion of the back plate In addition, a waist belt in the left-right direction, which decreases in width in a tapered manner from the back plate toward the tip, is provided .
According to a third aspect of the present invention, in the configuration of the first or second aspect , the cushion portions are arranged in the vertical direction.
The invention according to claim 4 is characterized in that, in the structure according to any one of claims 1 to 3 , the cushion portions are arranged symmetrically.
According to a fifth aspect of the present invention, in the configuration of the first aspect , a waist belt in the left-right direction is connected to the lower portion of the front surface of the back plate, and at least one of the upper and lower ends of the central portion is connected to the back plate. It is characterized by providing.

According to the first and second aspects of the present invention, even when there is a back plate, the feeling of fitting when carrying is good, the load on the operator due to the weight of the battery pack or the like is reduced, and the feeling of use is excellent. Further, an existing battery pack using a lithium ion battery can be suitably used as a portable power source for the rechargeable electric tool.
Furthermore, since a plurality of cushion portions are provided at a predetermined interval, the air permeability between the back plate and the back is ensured.
In particular, according to the first aspect of the invention, in addition to the above effects, the shoulder belt is formed in an S-shape that is mirror-symmetrical to the left and right, so that the shoulder belt fits the operator's shoulder and is not easily displaced.
According to invention of Claim 3 , in addition to the effect of Claim 1 or 2 , since the cushion part is arranged in the up-and-down direction, the cushion part contacts along the back and the feeling of use is better. Become.
According to the invention described in claim 4 , in addition to the effect of any one of claims 1 to 3, since the cushion portions are arranged symmetrically, the cushion portions are in contact with the left and right sides of the back in a well-balanced manner. Increases stability when Moreover, since it becomes the appearance which a cushion part contact | abuts avoiding a spine, a feeling of fitting becomes more favorable.
According to the fifth aspect of the invention, in addition to the effect of the first aspect , air permeability can be obtained between the waist belt portion and the back plate, and an improvement in fit can be expected.

It is a front view of a portable power supply bag. It is a side view of a portable power supply bag. It is a perspective view of a battery pack. It is explanatory drawing of the state which carried the portable power supply bag. It is explanatory drawing of a waist belt part. It is explanatory drawing of a holster part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an example of a portable power supply bag (hereinafter simply referred to as “power supply bag”). The power supply bag 1 is made of cloth using canvas cloth, nylon cloth, or the like. First, the power supply bag 1 has a vertically long rectangular shape and includes a back plate 2 having a hard plate of substantially the same shape as a core material, and is provided at the lower back of the back plate 2 over the left and right surfaces and the upper surface. A bag portion 3 whose rear surface can be opened and closed by the fastener 4 is provided. Further, a pair of left and right shoulder belts 5 and 5 projecting from the upper end of the back plate 2 to the lower side of the left and right side edges and projecting to the front side are provided. The shoulder belts 5 and 5 are formed in a left-right mirror-symmetrical S-shape in which the upper side swells left and right and the lower side swells left and right in the front view.

Reference numeral 6 denotes a waist belt connected orthogonally to the lower front portion of the back plate 2, and the waist belt 6 has only a predetermined width in the left and right direction at the upper and lower ends (positions P1 and P2 in FIG. 1) in the center. It is fixed to the back plate 2 by length sewing. The waist belt 6 has a mesh structure with good air permeability, and buckles that can be coupled to each other by a male member 7 and a female member 8 are provided at both ends thereof.
Further, above the waist belt 6 on the front surface of the back plate 2, four cushion portions 9, 9..., Which are oblong in front view, are arranged symmetrically at predetermined intervals in the left and right and up and down directions. ing. The cushion portion 9 is filled with an elastic material such as urethane and has elasticity in the front-rear direction.

  On the other hand, a battery pack 10 is accommodated in the back portion 3. This battery pack 10 is a commercially available product that is used by directly attaching to a housing of a rechargeable electric tool such as an impact driver or a hammer drill. As shown in FIG. 3, the battery pack 10 is a square box-shaped housing that contains a plurality of lithium ion batteries. On the upper surface of the pack main body 11, a mounting portion 12 to the rechargeable electric tool is formed. The mounting portion 12 includes positive and negative terminals (not shown) between a pair of rails 13 and 13 formed along the side in the longitudinal direction, and a pair of guides provided on the housing of the rechargeable electric tool. By sliding the rails 13 and 13 between the rails, the positive and negative terminals are electrically connected to the positive and negative terminal plates provided between the guide rails simultaneously with the mounting on the housing.

Therefore, the mounting unit 14 including the guide rail and the terminal plate is provided in the bag portion 3 in the same form as the housing of the rechargeable electric tool, and the battery pack 10 is slidably mounted.
15 is a controller that is electrically connected to the terminal plate of the mounting unit 14 by a lead wire (not shown), and has an output terminal 16 that can output the power from the battery pack 10 on the side surface, and a switch (not shown) is provided, The power supply from the battery pack 10 connected via the mounting unit 14 to the output terminal 16 can be arbitrarily turned ON / OFF by operating the switch.

Further, a pocket 17 that can be opened and closed by a fastener is provided on the upper side of the battery pack 10 in the bag portion 3, and a spare battery pack 10 is accommodated therein.
Thus, the waterproof part which the water stop process was given to the fastener 4 of the bag part 3 is employ | adopted by accommodating the electrical-related structural parts, such as the battery pack 10, in the bag part 3. FIG. .

  The power supply back 1 constructed as described above is supported by hanging the shoulder belts 5 and 5 on the left and right shoulders and turning the waist belt 6 around the waist and fixing it with a buckle as shown in FIG. I can carry it on my back. Therefore, if a rechargeable power tool (pruning shear 19 is illustrated here) is connected to the output terminal 16 via the relay cord 18 and the controller 15 is turned on, power is obtained from the battery pack 10. Work with the pruning shears 19 can be performed. In addition, through portions 20 of the relay cord 18 are provided on the front surfaces of the shoulder belts 5 and 5, respectively, and the relay cord 18 can be held without dropping downward by passing the relay cord 18 therethrough. The relay cord 18 does not get in the way of work.

Further, as shown in FIG. 5, when carrying, the cushion portion 9 abuts against the operator's back and is elastically deformed, so that the back plate 2 fits the operator's body and is prevented from shifting, and the weight. The load caused by
Further, the vertical and horizontal gaps formed between the cushion parts 9 and 9 and the gaps formed between the back plate 2 and the back due to the contact of the cushion parts 9 reduce the contact area and allow air permeability. Is kept so that heat does not accumulate on the back and stuffiness is suppressed.
In the state where the waist belt 6 is mounted, as shown in FIG. 5, the waist belt 6 to which only the upper and lower ends are fixed is curved along the operator's waist. A gap S is generated between them. Therefore, air permeability between the waist belt 6 and the back plate 2 can be obtained. In particular, the waist belt 6 is not constrained to the planar shape of the back plate 2 by this aspect and is easily deformed according to the body shape of the operator, which leads to an improvement in fit.

On the other hand, a holster 21 that houses the pruning shears 19 is suspended from the waist belt 6. The holster 21 has a bag shape in which the pruning scissors 19 can be inserted and stored with the blade edge down, and can be suspended by passing the waist belt 6 through a suspension band 22 provided on the opening side of the upper end.
Further, the holster 21 is not in a vertical posture in which the opening faces directly above, but in an inclined posture in which the opening faces obliquely rearward with respect to the hanging band 22 (preferably, an inclination of 20 degrees to 30 degrees with respect to the vertical direction). It is fixed. As a result, the entire pruning scissors 19 can be easily inserted / removed with a rechargeable electric tool having a straight shape, and can be suitably used as a temporary storage place when the operation is interrupted.

  Thus, according to the power supply bag 1 of the said form, while providing the bag part 3 which can be opened and closed on the back surface of the backplate 2 provided with a pair of left and right shoulder belts 5 and 5 and having a hard plate inside, the backplate 2 is provided with a cushion portion 9, a battery pack 10 using a lithium ion battery, a mounting unit 14 in which the battery pack 10 is detachably connected to the bag portion 3, and the mounting unit 14 And a controller 15 having a switch 15 capable of turning ON / OFF the power supply from the output terminal 16 and the power supply output terminal 16 from the battery pack 10 are accommodated. The feeling of fitting at the time becomes good, the load on the operator due to the weight of the battery pack 10 or the like is reduced, and the feeling of use is excellent. Moreover, the existing battery pack 10 using a lithium ion battery can be suitably used as a portable power source for a rechargeable electric tool such as the pruning shears 19.

In particular, here, since a plurality of cushion portions 9 are provided at a predetermined interval, air permeability between the back plate 2 and the back is ensured.
Moreover, since the cushion part 9 is arranged in the up-and-down direction, the cushion part 9 contacts along the back and the feeling of use becomes better.
Furthermore, by arranging the cushion portions 9 symmetrically, the stability when the cushion portions 9 are brought into contact with the left and right in good balance is increased. Moreover, since it becomes the appearance which the cushion part 9 contact | abuts avoiding a spine, a feeling of fitting becomes more favorable.

On the other hand, since the waist belt 6 in the left-right direction is provided in the lower front portion of the back plate 2 and only the upper and lower ends of the center portion are connected to the back plate 2, the waist belt 6 is also connected to the back plate 2. As well as breathability can be obtained, an improved fit can be expected.
Further, the shoulder belts 5 and 5 are formed in an S-shape that is left and right mirror-symmetrical so that the upper side swells left and right and the lower side swells left and right in front view, so that the shoulder belt 5 fits the shoulder of the operator. It becomes difficult to slip.

The number and arrangement of the cushion portions are not limited to the above-described form, and the number and rows may be increased vertically and horizontally. Moreover, it is not necessary to make all the cushion parts have the same orientation and shape. For example, a change in which the lower cushion part is set to the horizontal direction or is made smaller as it goes downward is also conceivable.
Further, in the form of the bag portion, the arrangement of the fastener can be changed, and a lid body that can be opened and closed with a button, a string, or the like may be provided instead of the fastener. Of course, the arrangement of the battery pack or the like in the bag portion can be changed as appropriate, and the mounting unit can be integrated with the controller or the pocket can be omitted. In addition, a partition may be provided for each battery pack or controller housing in the bag. Furthermore, it is possible to carry the controller separately on the side of the body using a waist belt or the like outside the bag part without accommodating the controller in the bag part.

And the form of a shoulder belt or a waist belt can also be changed suitably. In particular, the waist belt connects the upper and lower ends of the central portion to the back plate in the above-described form, but even if only one of the upper and lower ends is connected to the back plate, the air permeability is similarly good. A feeling of fitting is obtained.
Further, the holster may be suspended and supported on either the left or right side of the operator, or may be supported on both the left and right sides. Of course, it can be omitted.
In addition, the rechargeable power tool is not limited to the pruning shears, but the power bag of the present invention can be used for gardening tools such as hedge clippers and mowers as well as other types of tools such as impact drivers and hammer drills. Is possible.

  1 .. Portable power supply bag 2. Back plate 3. Bag part 4 Fastener 5 Shoulder belt 6 Waist belt 9 Cushion part 10 Battery pack 12 ..Installation section, 14..Installation unit, 15..Controller, 16.Output terminal, 17..Pocket, 18..Relay cord, 19..Pruning shears, 21..Holster.

Claims (5)

A portable power bag,
A battery pack for a rechargeable electric tool using a lithium-ion battery provided with a cushion portion on the front surface of a back plate having a pair of left and right shoulder belts, and a mounting unit to which the battery pack is detachably electrically connected While being housed
A plurality of the cushion portions are provided at predetermined intervals ,
The shoulder belts are formed in an S-shape that is left-right mirror-symmetric with the upper side bulging to the left and right and the lower side bulging to the left and right in front view, and each shoulder belt has an upper end outside the upper side of the back plate. A portable power supply bag characterized in that it is connected to each other and the lower end is connected to the lower side of the same side as the upper end . A portable power bag,
A battery pack for a rechargeable electric tool using a lithium-ion battery provided with a cushion portion on the front surface of a back plate having a pair of left and right shoulder belts, and a mounting unit to which the battery pack is detachably electrically connected While being housed
A plurality of the cushion portions are provided at predetermined intervals,
A portable power supply bag is provided at a lower front portion of the back plate, wherein a left and right waist belt having a tapered width from the back plate toward a front end portion is provided . Portable power bag according to claim 1 or 2, characterized in that an array of the cushion unit in the vertical direction. The portable power supply bag according to any one of claims 1 to 3, wherein the cushion portions are arranged symmetrically. The mobile phone according to claim 1 , wherein a waist belt in a left-right direction is provided at a lower front portion of the back plate, and at least one of upper and lower ends of the central portion is connected to the back plate. Power bag.

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