JP5975277B2 - Back load type power supply - Google Patents

Description

  The present invention relates to a backpack type power source equipped with a secondary battery.

  Conventionally, as a portable power source for an electric tool or the like, a battery holster that accommodates a secondary battery and can be worn on the waist is known (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 7-3983

  The present invention seeks to provide a portable power source that has a larger capacity than the battery holster and is easy to carry.

  In order to solve the above-described problems, the present invention provides a case part that houses a battery pack, a backpack part that is connected to the case part to carry the case part, and a handle part that is connected to the case part, A backpack type power supply characterized by comprising:

  According to such a configuration, the user can carry the back-loaded power supply with the handle in a short-distance movement or the like that does not require the back-loaded power supply. In addition, since the handle portion is connected to the heaviest case portion, it is possible to lift the back load type power source in a well-balanced manner and to facilitate transportation.

  Moreover, it is preferable that the end of the handle portion is fixed to the backpack portion.

  According to such a structure, when carrying a backpack type power supply with a handle part, a load is not applied to the fixed part to which a case part and a backpack part are fixed. In addition, since the case portion and the backpack portion are connected not only through the fixed portion formed on the back surface but also through the handle portion, the case portion and the backpack portion can be more reliably coupled.

  In addition, the backpack power source further includes a top strap portion provided between the case portion and the backpack portion in order to adjust a distance between the case portion and the backpack portion, and the handle portion is The top strap portion is preferably connected to the backpack portion by the top strap portion.

  According to such a structure, since the handle part is provided in the top strap part, it becomes possible to suppress the increase in the cost for providing a handle part, and the complexity of a structure. In addition, the user can arbitrarily adjust the distance between the case part and the backpack part by the top strap part, or small items such as plastic bottles and gloves using the top strap part between the case part and the backpack part. Or, it is possible to hold the power tool such as an accessory, an adapter, etc., so that the fit and convenience during mounting are improved.

  The top strap portion includes a strap connected to the handle portion, the case portion has an insertion hole, and the strap is disposed between the handle portion and the backpack portion. It is preferable that the structure is inserted into the insertion hole of the portion.

  According to such a configuration, the connection between the handle portion and the case portion and the connection between the handle portion and the backpack portion can be realized with a simple structure.

  It is preferable that the case portion is formed with a handle recess for forming a space between the handle portion and the case portion in a state where the handle portion is in contact with the case portion.

  According to such a configuration, even when the handle portion is in contact with the case portion, the user can easily grasp the handle portion by inserting a finger into the space formed by the recess for the handle. It becomes possible.

  According to another aspect of the present invention, there is provided a backpack-type power supply apparatus to which an electric tool is connected, and a case portion housing a battery pack and a backpack connected to the case portion for carrying the case portion on the back. And a belt portion that connects the case portion and the backpack portion.

According to such a structure, since the case part and the backpack part are connected via the belt part, it is possible to couple | bond a case part and a backpack part more reliably.
Further, the handle portion is disposed over both spaces partitioned by a virtual plane perpendicular to the left-right direction including the center of gravity line in the left-right direction of the case portion, and on both sides of the case portion sandwiching the virtual plane It is preferable that an insertion hole that penetrates the case portion in a direction orthogonal to both the left-right direction and the up-down direction is formed.

  According to the present invention, it is possible to provide a backpack type power source that is a large-capacity portable power source and that can be easily transported.

Front view of a backpack type power supply according to an embodiment of the present invention Side view of a backpack type power supply according to an embodiment of the present invention The front view of the back surface by embodiment of this invention The side view which shows an example of the usage method of the backpack type power supply by embodiment of this invention

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  The backpack-type power source 1 according to the present embodiment is for performing work with an electric tool in a state where the battery pack accommodated therein is carried on the back. As shown in FIG. 2 and the backpack 3.

  The case part 2 has a box shape and houses a battery pack, a control board, and the like.

  The battery pack is composed of a plurality of secondary batteries connected in series. In the present embodiment, the battery pack has a large capacity, and more specifically, a plurality of sets of secondary battery units connected in series are arranged in parallel.

  As shown in FIGS. 2 and 3, the case portion 2 has a back contact surface 21 that is in contact with the back of the user in a substantially square shape made of a metal such as resin or aluminum. A plurality of concave portions 22 and convex portions 23 extending in the direction are alternately formed. Therefore, when carrying the backpack-type power supply 1, the user's back comes into contact with the convex portion 23 via the pad portion 31 of the backpack portion 3 described later, and the user's back (pad portion 31) and the concave portion 22 There will be a space between them.

  As described above, since the battery pack according to the present embodiment has a large capacity, the battery pack temperature may rise to a temperature at which the user feels uncomfortable with the use of the backpack type power supply 1. . However, in the backpack type power supply 1 according to the present embodiment, air permeability is ensured between the user's back and the backrest surface 21 by the above configuration, and thus heat generated in the battery pack is transferred to the user's back. Transmission and the occurrence of stuffiness on the user's back are greatly reduced.

  In particular, in the present embodiment, as shown in FIGS. 2 and 3, the plurality of concave portions 22 and convex portions 23 extend in the left-right (horizontal) direction.

  With such a configuration, wind that is often blown in the left-right direction is formed between the user's back and the recess 22 and easily passes through the space extending in the left-right direction. Transmission to the back of the user and generation of stuffiness on the back of the user are further reduced.

  Furthermore, in the present embodiment, the inside of the convex portion 23 that comes into contact with the user's back is a cavity where no battery pack, control board, or the like is disposed.

  With such a configuration, the user's back and the battery pack can be insulated in adiabatic manner, so that heat generated in the battery pack is transmitted to the user's back and the user's back is stuffy. It is further reduced.

  Also, as shown in FIG. 3, a cable extension hole 24 is formed in the lower part of the back surface 21 to extend a power cable (not shown) connected to the power tool. As shown in FIG. 4, a guide groove 25 is formed on the back surface 21 so as to extend in the left-right direction from the cable extension hole 24.

  According to such a configuration, the power cable is guided toward the left or right end portion of the backrest surface 21 along the guide groove 25 formed to extend in the left-right direction. The user can extend the power cable in a desired direction according to the relationship between the user's dominant arm and the power tool, thereby improving workability. In addition, it is possible to prevent the working efficiency from being lowered due to the power cable hanging down when working with the power tool connected to the tip of the power cable.

  As shown in FIG. 1, an operation cable 26 connected to the control board extends from the case unit 2, and an operation unit 27 is connected to the tip of the operation cable 26. The operation unit 65 includes a power switch, a remaining amount switch, a remaining amount display LED, a power LED, and an abnormality LED.

  Further, as shown in FIGS. 1 and 2, a pair of insertion holes 28 are formed in the upper portion of the case portion 2 so as to be separated in the left-right direction, and a handle recess is provided between the pair of insertion holes 28. 29 is formed. The pair of insertion holes 28 and the handle recess 29 will be described later.

  As shown in FIGS. 1 and 2, the backpack 3 includes a pad portion 31, a pair of shoulder belts 32, and a pair of waist belts 33.

  The pad portion 31 is disposed between the user's back and the backrest surface 21 and is formed of a non-rigid member having substantially the same size as the backrest surface 21.

  The pair of shoulder belts 32 are stretched across the upper and lower portions at both ends of the pad portion 31, and the user passes the shoulder through the space formed by the shoulder belt 32, thereby allowing the backpack power source 1. Can be carried on the back.

  A pair of waist belts 33 extend substantially horizontally from the lower portions of both ends of the pad portion 31. The tip portions of the pair of waist belts 33 are configured to be engageable with each other, and by engaging the tip portions, it is possible to fit the backpack type power source 1 (backrest surface 21) to the user's body. It has become.

  In addition, an auxiliary belt for enabling the left and right shoulder belts 32 to be engaged in the horizontal direction may be provided on the upper portion of the waist belt 33. With such a configuration, the user moves the body at the time of use. In addition, it is possible to reduce the slip between the back-type power source 1 (back surface 21) and the user's body.

  The pad portion 31 to which the shoulder belt 32 and the waist belt 33 are connected is fixed to a plurality of fixing portions 21a (FIG. 3) formed on the back contact surface 21 by fixing members such as screws.

  In the backpack type power source 1 according to the present embodiment, the battery pack has a considerable weight, and therefore, sufficient attention is required for the engagement between the case portion 2 and the backpack portion 3.

  In the backpack type power source 1 according to the present embodiment, the pad portion 31 is fixed to a plurality of fixing portions 21 a formed on the backrest surface 21 with fixing members such as screws, so that the connection between the case portion 2 and the backpack portion 3 is performed. Is prevented from coming off.

  The plurality of fixing portions 21a are formed in the vicinity of the convex portion 23 of the pad portion 31 (backing surface 21).

  According to such a structure, since the case part 2 which is a heavy article is fixed with the whole convex part of the pad part 31, it is possible to distribute and support a load.

  In the present embodiment, as shown in FIGS. 1 and 2, the backpack 3 includes a top strap part (belt part) 34 that extends from the shoulder belt 32 to the case part 2 via the pad part 31. ing.

  The top strap portion 34 includes a pair of engaging portions 35, a pair of buckles 36, a strap 37, and a handle portion 38.

  The pair of engaging portions 35 extend from the pair of shoulder belts 32 and respectively connect both end portions of the upper portion of the pad portion 31.

  The pair of buckles 36 are connected to the ends of the pair of engaging portions 35, respectively.

  The strap 37 is formed from a belt-shaped member, and after passing through a pair of insertion holes 28 formed in the case portion 2, both ends thereof are connected to a pair of buckles 36.

  Further, the pair of buckles 36 is configured to be able to adjust the connection position with the strap 37, and the user extends from the pair of buckles 36 to the pair of insertion holes 28 by adjusting the connection position. It is possible to adjust the length of the strap 37, that is, the gap between the user's back (pad portion 31) and the case portion 2, or the distance between the handle portion 38 and the case portion 2.

  As a result, when the length of the gap between the user's back (pad portion 31) and the case portion 2 is adjusted, the load of the case portion 2 is efficiently distributed to the shoulder belt 32. As a result, the user's fatigue can be greatly reduced. Further, when the length of the handle portion 38 and the case portion 2 are adjusted, the user can easily hold the length of the handle portion 38 even when the user uses work gloves or the like. It can be a length.

  The handle portion 38 is attached to a portion of the strap 37 opposite to the backpack portion 3 with respect to the pair of insertion holes 28. The handle portion 38 has a width longer than the handle recess 29 formed in the case portion 2 in the left-right direction.

  With such a configuration, the user can carry the back-type power supply 1 with the handle portion 38 in a short-distance movement that does not require the back-type power supply 1 to be carried on the back. Moreover, since the handle part 38 is connected to the heaviest case part 2, it becomes possible to lift the backpack type power supply 1 in a well-balanced manner, and transportation becomes easy. In particular, by arranging the handle portion 38 on the center of gravity line A shown in FIG. 1, it is possible to lift the backpack power source 1 in a more balanced manner.

  Further, as described above, in the present embodiment, the case portion 2 is connected to the backpack portion 3 (pad portion 31) via the top strap portion.

  Therefore, when carrying the backpack type power supply 1 with the handle portion 38, a load is not applied to the fixed portion to which the case portion 2 and the backpack portion 3 are fixed. Moreover, since the case part 2 and the backpack part 3 are connected not only through the fixed part 21a formed in the back contact surface 21 but also through the handle part 38, the case part 2 and the backpack part 3 are more reliably coupled. It is possible.

  Moreover, in this Embodiment, the handle part 38 is provided in the top strap part 34 (strap 37).

  With such a configuration, since the handle portion 38 is provided on the top strap portion 34, it is possible to suppress an increase in cost and a complicated structure for providing the handle portion 38. Further, the user arbitrarily adjusts the distance between the case part 2 and the backpack part 3 by the top strap part or the top strap part 34 is used between the case part 2 and the backpack part 3 to use the plastic bottle. It is possible to hold a small object such as a glove or the like, or an accessory of an electric tool, an adapter, or the like (see the storage unit 39 in FIG. 4), thereby improving the fit and convenience at the time of wearing.

  Further, in the present embodiment, the handle portion 38 is disposed on the opposite side to the portion of the strap 37 connected to the backpack portion 3 with respect to the pair of insertion holes 28.

  With such a configuration, the connection between the handle portion 38 and the case portion 2 and the connection between the handle portion 38 and the backpack portion 3 can be realized with a simple structure.

  In addition, when the user adjusts the length of the strap 37 (the gap between the user's back (pad portion 31) and the case portion 2) for the purpose of adjusting the gap between the back and the case portion 2, It is considered that the length of the strap 37 is adjusted to be short. In this case, the handle portion 38 is close to or in contact with the case portion 2 only by the configuration in which the strap is passed through the insertion hole. It is expected that it will be difficult to grasp the portion 38.

  However, in the present embodiment, a handle recess 29 having a width shorter than that of the handle 38 in the left-right direction is formed at a position expected to contact the handle 38 of the case portion 2. 29, even when the handle portion 38 is in contact with the case portion 2, a space is partially formed between the handle portion 38 and the case portion 2.

  With such a configuration, even when the handle portion 38 is in contact with the case portion 2, the user can easily grasp the handle portion 38 by inserting a finger into the space formed by the recess portion 29 for the handle. It becomes possible.

  The power tool according to the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made within the scope described in the claims.

  For example, in order to prevent the case part 2 from being detached when the user does not intend, the top strap part 34 does not necessarily need to include the handle part 38. Further, it is of course possible to use a belt-like member other than the top strap portion 34 in connecting the case portion 2 and the backpack portion 3.

DESCRIPTION OF SYMBOLS 1 Back type power supply 2 Case part 3 Back side part 28 Insertion hole 29 Recess 34 for handles Top strap part 37 Strap 38 Handle part

Claims (4)

A case portion containing a battery pack;
A backpack connected to the case portion to carry the case portion;
A handle portion connected to the case portion and having an end portion fixed to the backpack;
A top strap portion provided between the case portion and the backpack portion to adjust the distance between the case portion and the backpack portion,
The backpack-type power source, wherein the handle portion is provided on the top strap portion and connected to the backpack portion by the top strap portion. The top strap portion includes a strap connected to the handle portion,
The case portion has an insertion hole,
The back strap power source according to claim 1, wherein the strap is inserted through the insertion hole of the case portion between the handle portion and the back shoulder portion. A case portion containing a battery pack;
A backpack connected to the case portion to carry the case portion;
A handle portion connected to the case portion,
The case-type power source, wherein the case portion is formed with a handle recess for forming a space between the handle portion and the case portion in a state where the handle portion is in contact with the case portion. . The handle part is disposed over both spaces partitioned by a virtual plane that includes the center of gravity line in the left-right direction of the case part and is perpendicular to the left-right direction,
The insertion hole which penetrates the said case part in the direction orthogonal to both the said left-right direction and the up-down direction is formed in the both sides which pinch | interpose the said virtual plane of the said case part, respectively. Backpack type power supply.

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