JP6953883B2 - Electrical equipment set - Google Patents

Description

The present invention relates to an electrical device set including a cordless electrical device main body and a storage case for accommodating a battery pack.

Portable cordless electrical devices powered by rechargeable battery packs include portable circular saws, impact wrenches, blowers, and other power tools. In such an electric device, the device body, the battery pack, the charger, and the like are housed in a storage case, transported, carried, and stored.

Patent Document 1 describes a storage case for a power tool. This storage case has a main case and a lid member rotatably attached to the main case, and the lid side case rotatably provided on the upper part of the main case is housed inside the lid member. A battery pack, a charger, etc. are housed in the main case, and a power tool body, etc. are housed in the lid side case. Patent Document 2 describes a circular saw, and the circular saw is also housed in a storage case, transported, and carried.

JP-A-2017-7047 Japanese Unexamined Patent Publication No. 2016-179536

A rechargeable battery pack made of a lithium-ion battery includes a power storage unit formed by connecting a plurality of battery cells in series, and a battery pack main body for accommodating the power storage unit. When the rated amount of the battery pack (inside the power storage unit) Wh (watt hour) exceeds a predetermined value (specified value), such a lithium-ion battery is subject to, for example, international restrictions on the transportation of goods by aircraft. .. Here, the Wh rated amount is the voltage (V) × capacity (Ah) of the power storage unit housed in the battery pack. In a power tool operated at a relatively high voltage, the Wh rated amount of the battery pack attached to the power tool may exceed the regulation value. When transporting a battery pack that exceeds the regulation value by aircraft, it is necessary to take measures such as packing the battery pack electrode terminals with a non-conductive cap or cover in a container, which is a manufacturing cost. And transportation costs will be high. Not only electric tools, but also various electric devices that use lithium-in-on batteries as a power source, such as cordless lighting devices, are also subject to transportation restrictions.

On the other hand, when an electric tool such as a circular saw is housed in the storage case, a dead space is generated in the storage case due to the shape of the product, which causes the case to become large. For example, a circular saw has a rectangular frame-shaped base placed on the material to be cut and an electric motor mounted above the base, and the lower portion of the saw blade mounted on the rotating shaft of the electric motor. Projects to the underside of the base. The motor housing is provided with a handle, which projects upward from the motor housing.

For this reason, it is inevitable that the size of the accommodating case for accommodating the circular saw main body, the battery pack attached to the circular saw body, the charger for charging the battery pack, and the like will be increased. In particular, in order to accommodate a plurality of battery packs including a spare battery pack in the case, the accommodating case becomes large, and it is difficult to efficiently accommodate the required members.

An object of the present invention is to provide an electric device set capable of transporting an electric device requiring a large Wh rated amount without exceeding a regulation value.

Another object of the present invention is to provide an electric device set capable of efficiently accommodating a battery pack and an electric device to which the battery pack is mounted in a storage case.

The electric device set of the present invention is an electric device set including a storage case capable of accommodating the battery pack and the electric device main body in a state where the battery pack is removed from the electric device main body. Each has a plurality of power storage units that output a first rated voltage and are electrically disconnected, and the electric device main body connects the plurality of power storage units in series when the battery pack is attached. The battery pack has a series connection circuit that supplies a second rated voltage higher than the first rated voltage to the electric device main body, and the battery pack is housed in the storage case in a state of being removed from the electric device main body. The storage case includes a first case member on the main body side and a second case member on the lid side that can be opened and closed and attached to the first case member, and includes a round saw main body as an electric device and a battery pack. The round saw body includes a base made of a rectangular frame material, a motor housing that houses a motor and is provided on the base, a saw blade that is rotated by the motor and projects from the lower surface of the base, and the motor housing. The first case member has a base support surface in contact with the lower surface of the base and a base support surface that covers a part of the saw blade and projects to the lower surface of the base. The round saw body is provided below the surface and has a lower battery storage space that can be vertically overlapped with the round saw body to accommodate the battery pack, and the battery pack has a longitudinal direction thereof on the lower surface. It is accommodated in the battery accommodating space along the extending direction of the battery.

Electrical equipment set of the present invention, when the rated amount the product of the values of the capacitance of the rated voltage before Symbol energy storage unit, a single energy storage unit has a rated amount less than the predetermined value, the battery pack When attached to the main body of the electric device, the rated amount to be output becomes equal to or higher than a specified value by electrically connecting the plurality of the power storage units.

The electric device set of the present invention is provided on the side opposite to the lower battery storage space in the longitudinal direction of the first case member, next to the base support surface, and vertically mounts the battery pack. It has a battery storage space on the side that accommodates it in the orientation.

An electric device set is composed of a battery pack, an electric device main body, and a storage case for accommodating them. The battery pack has a plurality of electrically disconnected storage units, and the electric device main body is equipped with the battery pack. Then, since it has a series connection circuit for connecting a plurality of power storage units in series, a high voltage in which the plurality of power storage units are connected in series is supplied to the main body of the electric device. That is, a single power storage unit can be housed in the storage case while lowering the voltage. As a result, the Wh rated amount of the battery pack is not subject to the international restrictions on the transportation of goods by aircraft, and the electric equipment set can be manufactured and transported at low cost.

The storage case for accommodating the circular saw, which is an electric device, has a base support surface for supporting the base of the circular saw body and a battery storage space provided below the base support surface, and holds a battery pack. When housed in the battery storage space, the battery pack is housed under the base of the circular saw body. By accommodating the base and the battery pack in the accommodating case by overlapping them vertically through a gap in this way, the circular saw body and the battery pack are efficiently accommodating without increasing the size of the accommodating case. be able to.

It is a perspective view which shows the appearance of the accommodating case accommodating a portable circular saw as an electric device. It is a perspective view which shows the inner surface of the accommodation case in an open state. FIG. 2 is a cross-sectional view taken along the line AA in FIG. (A) is a front view showing a circular saw in which a battery pack is attached to a circular saw main body and is in a usable state, and (B) is a rear view of (A). It is a perspective view which shows the circular saw main body and two battery packs as the electric equipment main body housed in a storage case. It is a perspective view which shows the state which the circular saw main body and two battery packs are housed in a storage case. It is a connection circuit diagram which shows the connection state of the power storage unit terminal built in the battery pack, and the series connection circuit provided in the electric apparatus main body. (A) is a perspective view showing a state in which the electrode side terminal of the battery pack is covered with the terminal cover, and (B) is a perspective view showing a state in which the terminal cover of (A) is separated from the battery pack. C) is a perspective view showing the terminal cover of (A). It is a perspective view which shows the terminal cover of FIG. 8C from another angle. It is sectional drawing which shows the state which the circular saw main body which attached the battery pack and the spare battery pack are housed in the storage case. It is a perspective view which shows the state which the circular saw main body, two battery packs, and a charger are housed in a storage case.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the storage case 10 has a first case member 11 on the main body side and a second case member 12 on the lid side, and has a box shape having a substantially rectangular parallelepiped shape as a whole. The first case member 11 has a bottom wall 11a, side walls 11b, 11c and end walls 11d, 11e, as shown in FIGS. 2 and 3. The second case member 12 has a bottom wall 12a, side walls 12b, 12c and end walls 12d, 12e, as shown in FIG.

Each of the case members 11 and 12 is composed of five wall portions, the first case member 11 has a substantially quadrilateral opening end 13, and the second case member 12 has an opening end 14 abutted against the opening end 13. have. The side walls 11b, 11c and the end walls 11d, 11e of the first case member 11 are inclined in a direction slightly extending from the bottom wall 11a toward the opening end 13. Similarly, the side walls 12b, 12c and the end walls 12d, 12e of the second case member 12 are inclined in a direction slightly extending from the bottom wall 12a toward the opening end 14.

Both side walls 11c and 12c are connected by a hinge portion 15, and the second case member 12 is attached to the first case member 11 so as to be openable and closable by the hinge portion 15. Both side walls 11b and 12b are provided with a handle for carrying the case, that is, a grip portion 16, and as shown in FIG. 1, the open end 13 of the first case member 11 and the second case member 12 When the housing case 10 is closed by abutting the opening end 14, the grip portion 16 of the first case member 11 and the grip portion 16 of the second case member 12 are abutted against each other. A latch (not shown) shown on the second case member 12 in order to hold the first case member 11 and the second case member 12 in a closed state when both grip portions 16 are abutted against each other. A part is provided.

The outer surfaces of the bottom walls 11a and 12a are flat, and with the first case member 11 on the main body side arranged on a base surface (not shown), the second case member 12 on the lid side is placed on the first case member 11. When the storage case 10 is opened by rotating the housing case 10, the circular saw main body and the battery pack constituting the electric device can be stored in the storage case 10 in a stable state and can be taken out. ..

The first case member 11 is formed by blow molding using a synthetic resin as a material. Blow molding is a method in which resin is molded by a molding die while supplying and discharging air to the inside of a tubular or tube type resin material, and a part of the end walls 11d and 11e is as shown in FIG. A laminated portion 17 having a double-layered inner and outer walls made of resin is formed. Similarly, a laminated portion having a double inner and outer wall is formed on a part of the side walls 11b and 11c. Further, as shown in FIG. 3, a partition wall 19 that forms a space 18 with the bottom wall 11a is formed on the first case member 11 by blow molding.

Similarly, when the second case member 12 is also molded by blow molding using a synthetic resin as a material, a laminated portion is formed on a part of the end walls 12d and 12e and the side walls 12b and 12c. By blow molding both case members 11 and 12 in this way, a space can be partially formed in each of the case members 11 and 12, and the inner and outer walls of the case members 11 and 12 are partially formed. Since the laminated portion having a double structure can be formed, the strength of the storage case 10 can be increased and the weight can be reduced.

FIG. 4A is a front view showing the circular saw 20a in which the battery pack 30 is attached to the circular saw main body 20 and is in a usable state, and FIG. 4B is a rear view of FIG. 4A.

The circular saw main body 20 has a base 21 made of a rectangular frame material. A motor housing 22 is attached to the base 21, and the motor is housed in the motor housing 22. The motor housing 22 is arranged along the width direction of the base 21, and projects outward from one side of the base 21.

A saw blade 24 is attached to the output shaft 23 of the motor, and the saw blade 24 projects below the base 21. A saw cover 25 that covers the upper portion of the base 21 of the saw blade 24 is attached to the motor housing 22, and the case assembly 26 is formed by the motor housing 22 and the saw cover 25. The case assembly 26 is provided with a handle 27 for the operator to grip when operating the circular saw, and the handle 27 projects upward from the motor housing 22.

Assuming that the left side of the base 21 in FIG. 4A is the tip of the circular saw body 20 and the right side is the rear end, the handle 27 extends beyond the motor housing 22 to the rear end of the base 21. The battery pack 30 can be mounted in the mounting space 28 between the rear end of the 27 and the rear end of the base 21. The battery pack 30 is a lithium ion battery. A protective cover 29 is rotatably mounted around the center of rotation of the output shaft 23 in order to cover the portion of the saw blade 24 that protrudes downward from the opening of the base 21. When the base 21 is arranged on the surface of the work material and the circular saw is moved forward along the work material when cutting the work material, the protective cover 29 is pushed by the work material and the saw blade 24 is pushed. When the base 21 is separated from the work material after the cutting is completed, the saw blade 24 is returned to the state of covering the lower portion of the saw blade 24 by the spring force.

FIG. 5 is a perspective view showing a circular saw main body 20 as an electric device main body and two battery packs 30a and 30b, which can be stored in the storage case 10. In FIG. 5, the second case member 12 of the storage case 10 is not shown. Like the battery pack, each of the battery packs 30a and 30b is a lithium ion battery, and can be housed in the storage case 10 in a state of being removed from the circular saw main body 20. FIG. 4 shows the battery pack 30 mounted on the circular saw main body 20, and FIG. 5 shows two battery packs 30a and 30b separated from the circular saw main body 20, but they are the same type of battery packs having the same shape. be.

When one of the battery packs is attached to the circular saw body 20, the circular saw body 20 and the battery pack 30a or the battery pack 30b form a circular saw 20a as an electric device, and the circular saw 20a is attached to the battery packs 30a and 30b. It becomes operable by the power from. As described above, one electric device system, that is, an electric device set including the storage case 10, the circular saw main body 20, and the plurality of battery packs 30a and 30b is configured.

As shown in FIGS. 2 and 5, the first case member 11 on the main body side has a base support surface 31 that supports the base 21 of the circular saw main body 20 on one end wall 11e side and one side wall. It is provided on the 11c side. The base support surface 31 is formed by the partition wall 19 shown in FIG. 3, and the lower surface of the base 21 comes into contact with the base support surface 31. The tip of the base 21 is on the end wall 11e side, and the motor housing 22 is on the side wall 11b side, and is housed in the case member 11. A cover accommodating portion 32 into which the protective cover 29 is inserted opens in the base support surface 31 and is formed in the case member 11. The lower end of the cover accommodating portion 32 reaches the bottom wall 11a.

A battery accommodating space 33 is provided on the side wall 11b side of the first case member 11 and on the end wall 11d side, and the battery accommodating space 33 is provided from the base support surface 31 as shown in FIG. Is also provided on the lower side, that is, on the bottom wall 11a side. In the lower battery accommodating space 33, the battery pack 30a is accommodating in a direction parallel to the base 21, that is, in the horizontal direction, below the base 21 and vertically overlapping the base 21 with a gap. Can be done. The bottom surface of the battery accommodating space 33 is formed by the laminated portion 17 of the bottom wall 11a.

The protective cover 29 projects below the base 21, and when the base 21 is placed on the base support surface 31, the protective cover 29 projects below the base support surface 31. The saw blade 24 and the protective cover 29 are closer to one side of the base 21, and a dead space is formed in the lower portion of the base support surface 31. Of the dead space, the battery pack 30a is housed horizontally below the base support surface 31, and the battery pack 30b is housed vertically in the area adjacent to the base support surface 31, so that the circular saw is used. The main body 20 and the two battery packs 30a and 30b can be efficiently accommodated in a limited space.

A battery accommodating space 34 is further provided on the side wall 11b side of the case member 11 and on the end wall 11e side. The battery accommodating space 34 has a battery accommodating space 33 provided on one end side in the longitudinal direction of the case member 11, that is, on the end wall 11d side, whereas the battery accommodating space 34 is provided on the opposite side in the longitudinal direction, that is, on the end wall 11e side of the case member 11. It is provided side by side next to the support surface 31. The battery pack 30b can be stored in the battery storage space 34 on the horizontal side in a direction substantially perpendicular to the bottom wall 11a, that is, in a vertical direction. The battery accommodating spaces 33 and 34, respectively, are formed by blow molding the case member 11.

As shown in FIG. 2, the second case member 12 on the lid side is provided with a concavo-convex portion corresponding to the battery packs 30a, 30b, etc. housed in the accommodating case 10, and the concavo-convex portion is provided. It is formed by blow molding the case member 12. Therefore, when the case member 12 is closed, the battery packs 30a and 30b housed in the case member 11 on the main body side face each other adjacent to the inner surface of the case member 12, and the battery packs 30a and 30b are inside the storage case 10 during transportation. The shift movement is suppressed.

FIG. 6 shows a state in which the circular saw main body 20 and the two battery packs 30a and 30b are housed in the case member 11. In FIG. 6, the second case member 12 of the storage case 10 is not shown.

As shown in FIG. 6, the battery pack 30a is horizontally accommodated in the battery accommodating space 33 and is accommodated in an area below the base support surface 31. The base 21 is arranged on the base support surface 31, and the circular saw main body 20 is housed in the case member 11. Further, the battery pack 30b is vertically accommodated in the battery accommodating space 34 so as to be adjacent to the side of the round saw main body 20 on the base support surface 31.

When the operator carries the storage case 10 containing the circular saw body 20 and the two battery packs 30a and 30b in his hand, the circular saw body 20 is below the battery packs 30a and 30b. The battery packs 30a and 30b are on the side wall side close to the side wall 11b and 12b on the upper side of the case members 11 and 12. As described above, since the circular saw main body 20 is on the lower side than the battery packs 30a and 30b, the center of gravity of the whole is on the lower side, and the balance of the center of gravity at the time of carrying is good. Moreover, since the two battery packs 30a and 30b are housed on both ends of the storage case 10, the entire center of gravity is the central part in the longitudinal direction of the storage case 10, and the center of gravity is well-balanced during carrying. The property becomes good.

In this way, the circular saw body 20 and the battery packs 30a and 30b can be housed in the storage case 10 in a state of being separated from the circular saw body 20 without mounting the battery pack on the circular saw body 20. .. When a circular saw is used, one battery pack is mounted in the mounting space 28 of the circular saw body 20.

Like the battery pack 30, each of the battery packs 30a and 30b has a resin battery pack main body 35 and a resin detachable portion 36 assembled to the battery pack main body 35. Slide rails 37 are provided on both the left and right sides of the attachment / detachment portion 36, and the circular saw main body 20 is provided with guide grooves into which the slide rails 37 are mounted. Therefore, when the slide rail 37 is inserted into the guide groove and the battery pack is pressed against the power supply mounting portion of the circular saw body 20, the battery packs 30a and 30b are mounted on the circular saw body 20. The detachable portion 36 is provided with a plurality of slits 38, and is provided with a power supply side terminal so as to project into the slit 38. On the other hand, the circular saw main body 20 is provided with a plurality of device-side terminals, and when the battery pack is attached to the circular saw main body 20, the power supply-side terminal and the device-side terminal come into contact with each other.

As the respective terminals, terminals for the positive electrode and the negative electrode for supplying power from the battery packs 30a and 30b to the circular saw body 20, and information on the battery packs 30a and 30b can be communicated to the circular saw body 20 or the circular saw body 20 can be used. In order to communicate the information of the saw body 20 to the battery packs 30a and 30b, there are a plurality of terminals for communication. Information for communication includes, for example, a terminal for a temperature sensor for communicating the temperature of the battery cell in the battery pack with the circular saw main body 20.

FIG. 7 is a connection circuit diagram showing a connection state between the power storage unit incorporated in each of the battery packs 30a and 30b and the series connection circuit provided in the circular saw main body 20 which is the main body of the electric device.

As shown in FIG. 7, the battery pack main body 35 of the battery packs 30a and 30b includes a first power storage unit 41 in which a plurality of battery cells 40 are connected in series, and a second power storage unit 42, respectively. Then, the respective power storage units 41 and 42 output a predetermined first rated voltage. In the case of this embodiment, the first rated voltage is 18V. The Wh rated amount of the power storage units 41 and 42 is 18 (V) × 3 (Ah) = 54 (Wh). Each of the power storage units 41 and 42 is electrically disconnected and separated, and is housed in a single battery pack main body 35. The first power storage unit 41 has a positive electrode terminal 43a and a negative electrode terminal 44a, and the second power storage unit 42 has a positive electrode terminal 45a and a negative electrode terminal 46a. On the other hand, the circular saw main body 20 is provided with positive electrode terminals 43b, 45b on the device side connected to the positive electrode terminals 43a, 45a on the power supply side, and negative electrode terminals on the device side connected to the negative electrode terminals 44a, 46a on the power supply side. 44b and 46b are provided.

The circular saw main body 20 is further provided with a series connection circuit 47 for connecting the first power storage unit 41 and the second power storage unit 42 in series. Therefore, when the battery packs 30a and 30b are attached to the circular saw main body 20, the total voltage of the two power storage units 41 and 42 can be supplied to the motor M and the like in the circular saw main body 20. For example, assuming that the rated voltage of each of the storage units 41 and 42 is 18V, the motor M can be supplied with a second rated voltage of 36V, which is twice the rated voltage. That is, the first rated voltage of the power storage units 41 and 42 is supplied to the motor M by the series connection circuit 47 with a second rated voltage higher than the first rated voltage. The motor M is adjusted to be suitably driven by the second rated voltage. That is, the motor M can be suitably driven by electrically connecting the storage units 41 and 42 in the battery packs 30a and 30b by the series connection circuit 47. In other words, the battery packs 30a and 30b are configured so that the supply voltage to the motor M can be obtained by electrically connecting the plurality of power storage units included in the battery packs 30a and 30b.

The number of power storage units provided in each battery pack body 35 is not limited to two as long as it is plural, and may be two or more. The series connection circuit 47 provides an integral multiple of the first rated voltage. Therefore, a second rated voltage higher than the first rated voltage can be supplied to the motor M in the round saw main body 20.

When each of the battery packs 30a and 30b is a lithium ion battery and the circular saw main body 20 and the two battery packs 30a and 30b are housed in the storage case 10 and transported by an aircraft, the batteries are described as described above. When the Wh rated amount of the packs 30a and 30b exceeds a predetermined value, it is subject to international commodity transportation regulations. In that case, the battery packs 30a and 30b must be packed in a standard container. As described above, the Wh rated amount of each of the power storage units 41 and 42 is 54 (Wh), but if these are connected in series in the battery packs 30a and 30b in advance according to the specifications of the motor M, , The total Wh rated amount is 108 (Wh), and for example, when the specified value (regulated value) of the transportation regulation is 100 (Wh), it is subject to regulation.

On the other hand, in the present embodiment, since the plurality of power storage units 41 and 42 in the battery pack body 35 removed from the electric device main body are electrically disconnected, the Wh rating of each of the power storage units 41 and 42 is increased. The size becomes smaller, and the Wh rated amount of the power storage unit (battery pack) housed in the storage case 10 becomes smaller. Therefore, the circular saw main body 20 and the battery packs 30a and 30b can be housed in the storage case 10 and transported by an aircraft as an electric device set without packing the respective battery packs 30a and 30b in a packing container or the like. .. As a result, the electric device set can be manufactured at low cost. As an example, the rated voltage of the power storage units 41 and 42 has been described as 18V, but if the Wh rated amount of a single power storage unit is within the range not subject to international commodity transportation regulations, it may be limited to 18V. No.

The present invention accommodates a plurality of single power storage units having a Wh rating that is not subject to regulation, and internally accommodates the plurality of power storage units in a battery pack capable of electrically connecting and disconnecting the plurality of power storage units. When a plurality of power storage units are electrically connected to each other, the Wh rated amount (value equal to or higher than the specified value) that is subject to regulation is output, and the Wh rated amount (less than the specified value) that is not subject to regulation is output by electrically shutting off. The configuration may be such that (value of).

Further, although the configuration in which the power storage units 41 and 42 are connected in series has been described, the present invention can be implemented in a configuration in which the power storage units 41 and 42 are connected in parallel. When the power storage units 41 and 42 are connected in parallel, the Wh rated amount of the battery pack is 18 (V) x 6 (Ah) = 108 (Wh), which exceeds 100 (Wh) as in the case of series connection. By implementing the present invention, the Wh rated amount (54 Wh) that is not subject to transportation regulation can be obtained.

Further, although the power storage units 41 and 42 have been described with the configuration of outputting the same Wh rated amount, different Wh rated amounts may be used.

According to the above-described embodiment, the power storage units 41 and 42 in the battery packs 30a and 30b are configured to cut off the electrical connection when the battery packs 30a and 30b are removed from the electric device main body. Apart from the removal operation from the main body, there is no need to manually cut off the electrical connection between the power storage units 41 and 42. Further, since it is possible to suppress the electrical connection of the power storage units 41 and 42 in the storage case 10, it is possible to comply with the transportation regulation with higher certainty.

FIG. 8 (A) is a perspective view showing a state in which the electrode side terminals of the battery pack 30a are covered with the terminal cover 52, and FIG. 8 (B) shows the terminal cover 52 of FIG. 8 (A) separated from the battery pack 30a. 8 (C) is a perspective view showing the terminal cover 52 of FIG. 8 (A).

As shown in FIG. 8, the attachment / detachment portion 36 of the battery pack 30a is provided with a mounting surface 51 to be mounted on the power supply mounting portion of the circular saw main body 20, and the mounting surface 51 is between the two slide rails 37. It is provided. A slit 38 provided with a power supply side terminal is opened on the upper surface and the end surface of the mounting surface 51, and the terminal cover 52 can be mounted on the mounting surface 51. The terminal cover 52 has a cover main body 53 that contacts the mounting surface 51 and covers the upper surface of the slit 38. At the longitudinal end of the cover main body 53, a bent portion 54 that is bent with respect to the cover main body 53 and covers the end surface of the slit 38 is provided so as to be connected to the cover main body 53. The bent portion 54 is provided with an operating portion 55 parallel to the cover main body portion 53 so as to be connected to the bent portion 54.

An engaging claw 56 as an engaging member is provided on the inner surface of the bent portion 54 as shown in FIG. 8C, and the engaging claw 56 can engage with the detachable portion 36. Therefore, when the terminal cover 52 is engaged with the attachment / detachment portions 36 of the battery packs 30a and 30b, as shown in FIG. 8A, the mounting surface 51 in which the slit 38 is opened is covered with the terminal cover 52 and is covered with the terminal cover 52. The terminal cover 52 is prevented from coming off from the battery packs 30a and 30b during transportation. Thereby, when the battery packs 30a and 30b are housed in the storage case 10 together with the circular saw main body 20 and transported or stored, the periphery of the mounting surface 51 of the battery packs 30a and 30b can be protected. Further, it is possible to prevent foreign matter from entering the slit 38 provided with the power supply side terminal.

FIG. 9 is a perspective view showing the terminal cover 52, showing the terminal cover 52 viewed from an angle different from that shown in FIG. 8 (C).

An insertion plate 57 as an engaging member projects from the inner surface of the bent portion 54, and the insertion plate 57 can be inserted into the slit 38 provided in the attachment / detachment portion 36. Therefore, when the terminal cover 52 is moved to the attachment / detachment portions 36 of the battery packs 30a and 30b along the mounting surface 51, the insertion plate 57 is inserted into the slit 38 as shown in FIG. 9A, and the slit 38 is inserted. The mounting surface 51 with the opening is covered with the terminal cover 52, and the terminal cover 52 is prevented from coming off from the battery packs 30a and 30b during transportation. Thereby, the safety of the battery packs 30a and 30b can be improved.

FIG. 10 is a cross-sectional view showing a state in which the circular saw main body 20 to which the battery pack 30 is mounted and the spare battery pack 30a are housed in the storage case 10.

As shown in FIG. 10, the battery pack 30 can be housed in the storage case 10 in a state of being mounted on the circular saw main body 20. In the storage case 10, as shown in FIGS. 5 and 6, two battery packs 30a and 30b can be stored in the respective battery storage spaces 33 and 34. Therefore, the storage case 10 can accommodate three battery packs, the battery pack 30 mounted on the circular saw main body 20 and the two battery packs 30a and 30b. In FIG. 10, the battery pack 30b is not shown.

As shown in FIG. 10, by accommodating the battery pack 30a below the base 21 of the circular saw main body 20, the base 21 is located above the battery pack 30a. Even if the storage case 10 is turned upside down during transportation and a force is applied to move the battery pack 30a toward the battery pack 30 in the storage case 10, the movement of the battery pack 30a is regulated by the base 21. NS. As a result, it is possible to prevent the battery pack 30a from escaping from the battery storage space 33 during transportation. That is, accommodating the battery pack 30a below the circular saw main body 20 (base 21) not only effectively utilizes the dead space in the accommodating case 10, but also improves the accommodating state of the contained object contained in the accommodating case 10. You can also get the effect of maintaining. The mounting surface 51 exists in the portion of the battery pack 30a that is regulated by the base 21 and faces the base 21, but since the mounting surface 51 is protected by the terminal cover 52, the base 21 covers the periphery of the mounting surface 51. It can suppress damage.

When the user stores the electrical equipment set shown in FIG. 10 after using it, the storage case 10 can accommodate three battery packs. Further, when the electric device set is transported or transported without using an aircraft, three battery packs can be accommodated in the accommodating case 10 as shown in FIG.

FIG. 11 is a perspective view showing a state in which the circular saw main body 20, the two battery packs 30a and 30b, and the charger 61 are housed in the storage case 10.

FIG. 6 shows a state in which the circular saw main body 20 and the two battery packs 30a and 30b are housed in the storage case 10, but in FIG. 11, in addition to these, the charger 61 is housed in the storage case 10. Is housed in. The charger 61 is on the upper side of the battery pack 30a and is housed in the storage case 10 close to the end wall 11d. In FIG. 11, since the circular saw main body 20 is not equipped with the battery pack, even if the circular saw main body 20, the battery packs 30a and 30b, and the charger 61 are housed in the storage case 10 and transported by an aircraft. , Not subject to international commodities transport regulations.

As shown in FIG. 3, the charger 61 is accommodated in the charger accommodating space 62 provided on the end wall 11d side. Since the charger storage space 62 is provided on the opposite side of the battery storage space 34 via the grip portion 16, even if the charger 61 is housed in the storage case 10, the weight balance is good. , The operability of carrying can be improved.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof. For example, the electric equipment constituting the electric equipment set is not limited to the above-mentioned round saw, and the rated voltage at which the electric equipment main body is in the operating state is a high voltage, and the voltage value corresponding to the rated voltage of the electric equipment main body is set. The present invention can be applied to various electric tools and electric devices such as radios, televisions, and fans as long as the battery pack of the lithium ion battery is provided. In addition to the members shown in the figure, a charging cable, an instruction manual, and the like can be stored in the storage case 10 that houses the circular saw as an electric device.

10 ... storage case, 11 ... first case member, 11b, 11c ... side wall, 11d, 11e ... end wall, 12 ... second case member, 12b, 12c ... side wall, 15 ... hinge part, 16 ... grip part, 17 ... Laminated part, 18 ... Space, 19 ... Partition wall, 20 ... Circular saw body, 20a ... Circular saw, 21 ... Base, 22 ... Motor housing, 23 ... Output shaft, 24 ... Saw blade, 25 ... Saw cover, 26 ... Case assembly, 27 ... handle, 28 ... mounting space, 29 ... protective cover, 30, 30a, 30b ... battery pack, 31 ... base support surface, 32 ... cover housing, 33, 34 ... battery storage space, 35 ... battery Pack body, 36 ... detachable part, 37 ... slide rail, 38 ... slit, 41 ... first power storage unit, 42 ... second power storage unit, 47 ... series connection circuit, 51 ... mounting surface, 52 ... terminal cover, 53 ... cover body, 54 ... bent, 55 ... operating, 56 ... engaging claws, 57 ... insertion plate.

Claims (8)

An electric device set including a storage case capable of accommodating the battery pack and the electric device main body with the battery pack removed from the electric device main body.
Each of the battery packs has a plurality of power storage units that output a first rated voltage and are electrically disconnected.
When the battery pack is attached to the electric device main body, a plurality of the power storage units are connected in series, and a second rated voltage higher than the first rated voltage is supplied to the electric device main body in series. Has a circuit,
The battery pack is housed in the storage case in a state of being removed from the main body of the electric device .
The storage case includes a first case member on the main body side and a second case member on the lid side that can be opened and closed and attached to the first case member, and includes a circular saw main body as an electric device and a battery pack. Contain and
The circular saw body includes a base made of a rectangular frame material, a motor housing that houses a motor and is provided on the base, a saw blade that is rotated by the motor and projects from the lower surface of the base, and the motor housing that is provided. It has a protective cover that covers a part of the saw blade and projects to the lower surface of the base.
The first case member is provided below the base support surface that contacts the lower surface of the base and the circular saw body so as to be vertically overlapped with each other through a gap to accommodate the battery pack. Has a possible lower battery storage space and
The battery pack is an electric device set that is housed in the battery storage space so that its longitudinal direction is along the extending direction of the lower surface. The power storage unit has a first rated voltage of 18 V, and when the battery pack is attached to the electric device main body, a rated voltage that is an integral multiple of the first rated voltage is supplied to the electric device main body. The electrical equipment set according to claim 1. The electric device set according to claim 1 or 2, wherein a plurality of the battery packs are housed in the storage case with the plurality of battery packs removed from the main body of the electric device. When the product of the rated voltage value and the capacity value of the power storage unit is used as the rated amount, a single power storage unit has a rated amount less than the specified value.
The electric device set according to claim 1, wherein when the battery pack is attached to the main body of the electric device, a plurality of the power storage units are electrically connected so that the rated amount to be output becomes a specified value or more. A horizontal battery that is opposite to the lower battery storage space in the longitudinal direction of the first case member and is provided adjacent to the side of the base support surface to vertically store the battery pack. The electrical equipment set according to any one of claims 1 to 4, which has a storage space. The first case member has a grip portion for carrying, and the lower battery accommodating space and the lateral battery accommodating space are arranged at both ends of the first case member via the grip portion. The electrical equipment set according to claim 5. The electric device set according to claim 5 or 6 , wherein the lower battery accommodating space and the lateral battery accommodating space are arranged on the side wall side of the first case member with respect to the center of gravity of the circular saw body. Any one of claims 1 to 7 , wherein the base can be brought into contact with the base support surface and the circular saw body can be housed in the first case member with the battery pack attached to the circular saw body. Electrical equipment set described in.

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