JP2014194950A - Battery device for power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horticultural tool, such as a horticultural trimmer, capable of improving ease of handling by enabling the tool body to be placed as it is at a working site under a hanging state of the body unit, although a battery device capable of weight reduction by attaching a light adapter onto a battery fitting section and storing a heavy battery pack into a body unit being hung from a waist belt of a user is conventionally troublesome because the user needs to remove the whole body unit before leaving a working site even in pausing trimming work.SOLUTION: The horticultural tool is structured so that an adapter unit 22 fitted onto a tool body can be separated from a body unit 21 which a user fits onto its body at a connector connection section C1 of an adapter code 23.

Description

  The present invention relates to a battery device used for a power source of an electric tool.

For example, electric screw tightening tools and drilling tools, which are hand-held power tools that are held in the hand of an operator, use a rechargeable battery as a power source. In many cases, the battery-type power tool is used by attaching a battery pack to the tool body. The battery pack can be repeatedly used by removing it from the tool body and charging it with a separately prepared charger.
Battery packs for power tools contain multiple cells in a battery case, and occupy a relatively large weight. Workability may be reduced due to fatigue. Techniques for solving this problem are disclosed in the following patent documents. This patent document discloses a technique for improving the usability by separating the battery pack from the tool body by using the battery device and reducing the weight thereof.
This battery device includes an adapter unit to be mounted on the tool main body and a main body unit that can accommodate a battery pack and can be hooked on an operator's waist belt or the like. It is electrically connected to the unit. According to the related art, the main unit containing the heavy battery pack is hung on the waist belt by the operator, and the adapter unit to be mounted on the tool main body side is not significantly light because it does not have a cell. As a result, the usability of the tool main body can be improved and the handling thereof can be facilitated, thereby improving the working efficiency.

Japanese Utility Model Publication No. 7-3983

However, according to the above-described conventional battery device, when an operator temporarily suspends work for a break or the like and places the electric tool in the work place, is the adapter unit removed from the tool body and carried with the body unit? It is necessary to remove the main unit from the waist belt etc. and place it in the workplace together with the adapter unit. Since the adapter unit and main unit are connected with an adapter cord, the handling of the unit may be troublesome. .
It is an object of the present invention to further improve the handleability by allowing a main unit containing a battery pack to be separated from an electric tool while being attached to an operator's body or the like.

The above problems are solved by the following invention.
1st invention is a battery device provided with the main body unit which accommodated the battery pack, and the adapter code | cord | chord for connecting this main body unit to a power tool as a power supply, Comprising: A main body unit is a power tool via an adapter cord | code. The battery unit is configured to be separated from the electric tool by disconnecting the connector connecting portion.
According to the first aspect, since the main unit can be separated from the electric tool by disconnecting the connector connecting portion of the adapter cord, the usability and handleability of the battery device can be improved.
In the first invention, in addition to the configuration in which the main body unit is indirectly connected to the power tool via the adapter cord connector connection portion, the adapter unit is not directly connected to the tool main body portion of the power tool. Includes a configuration for connector connection.
According to a second invention, in the first invention, an adapter unit that can be attached to the battery mounting portion of the electric tool is provided, the adapter unit and the main unit are connected by a connector via an adapter cord, and the main unit is connected to the adapter unit. It is a battery device indirectly connected to the power tool via the connector.
According to the second invention, power is supplied from the main unit to the electric tool via the adapter unit attached to the battery attachment portion of the electric tool. By removing the adapter unit from the battery mounting portion, the battery device can be separated from the electric tool. Moreover, since the connector between the main unit and the battery unit is connected via the adapter cord, the main unit can be separated from the electric tool by disconnecting the connector connecting portion. Since the main unit can be separated from the electric tool by disconnecting the connector connecting portion, it is possible to improve the efficiency of the work by reducing the weight of the electric tool during work, and to improve the handleability of the battery device when the work is interrupted. it can.
A third invention is the battery device according to the first invention, wherein the main unit is directly connected to the electric tool via an adapter cord.
According to the third invention, for example, a male connector is attached to the tip of the adapter cord on the main unit side, and a female connector is attached to the tool main body of the electric tool, so that the adapter unit in the second invention is interposed. The main unit can be directly connected to the power tool without any connector. Even with such a configuration, the main body unit can be easily separated from the electric tool by disconnecting the connector connecting portion, and while the weight of the electric tool side during the operation is reduced, the handleability of the battery device when the operation is interrupted, etc. Can be better.
4th invention is a battery apparatus which has a connector connection part in the middle position of an adapter cord in any 1st-3rd invention. According to the fourth invention, the adapter unit and the main unit can be separated from each other by separating the connector connection at the midway position of the adapter cord.
A fifth invention is the battery device according to any one of the first to fourth inventions, wherein the connector connecting portion has a retaining structure. According to the fifth aspect, inadvertent removal of the connector connecting portion is prevented, and an unexpected operation interruption state of the tool main body portion can be prevented beforehand.
A sixth invention is a battery device according to any one of the first to fifth inventions, wherein the connector connecting portion has a waterproof structure. According to the sixth invention, the connector connecting portion can be applied to outdoor work.
7th invention is a battery apparatus which can connect a main-body unit to a charger via the connector connection part in any one invention of 1st-6th. According to the seventh aspect of the invention, the battery pack accommodated by connecting the main unit to the charger can be charged, and the usability of the battery device can be enhanced in this respect.

It is a perspective view which shows the usage example of the battery apparatus which concerns on 1st Embodiment of this invention. This figure shows a state in which the hedge is pruned using the battery device as a gardening tool. It is a perspective view which shows the state which mounted | wore the garden tool with the battery apparatus which concerns on 1st Embodiment of this invention. 1 is an overall perspective view of a battery device according to a first embodiment of the present invention. This figure has shown the state which connected the adapter unit to the main body unit. 1 is an overall perspective view of a battery device according to a first embodiment of the present invention. This figure has shown the state which disconnected the adapter cord from the main body unit. It is a perspective view of the main body unit concerning a 1st embodiment. This figure has shown the state which opened the cover part. It is a perspective view of a connector receiving part and a connector coupling part. This figure shows the separated state. It is a perspective view of the battery apparatus of 2nd Embodiment. It is a perspective view of the battery apparatus of 3rd Embodiment. It is a perspective view which shows 4th Embodiment. This figure has shown the state which carries out the connector connection of the main body unit which concerns on 2nd or 3rd embodiment, and is charged. It is a perspective view of the battery apparatus of 5th Embodiment.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a state in which a battery device 20 of the present embodiment described below is attached to a garden tool 10 called a hedge clipper as an example of an electric tool. The present embodiment has a feature in the battery device 20, and the electric tool (the gardening tool 10) to which the battery device 20 is attached may be the same as the conventional one, and in the present embodiment, there is no particular change, so that it will be briefly described. To do. This gardening tool 10 includes a tool main body 11 having a main grip 13 that is gripped by a user, and a blade 15 that is equipped to protrude forward from the front of the tool main body 11. A battery mounting portion 17 is provided on the lower surface side of the main grip portion 13 in the rear portion of the tool main body portion 11. The tool main body 11 is also supplied with power by directly mounting one battery pack as a power source on the battery mounting portion 17. In the present embodiment, the gardening tool 10 has a 36V power supply as a specification, and when a battery pack is directly mounted on the battery mounting portion 17, a 36V battery pack is mounted.
A loop-shaped sub-grip part 12 is provided at the front part of the tool body part 11. A loop-shaped switch lever 14 is also provided along the sub-grip portion 12. A protective guard plate 16 for protecting the user's hand holding the sub grip 12 is attached to the front of the sub grip 12. The user grips the main grip portion 13 with one hand and the sub grip portion 12 with the other hand, and the switch lever (not shown in the figure) on the main grip portion 13 side and the sub grip portion 12 side. When the switch lever 14 is pulled simultaneously, the tool body 11 is activated and the blade of the blade 15 is reciprocated.
As described above, a 36V specification battery pack can be directly attached to the battery mounting portion 17 of the tool main body 11, and an adapter unit 22 of the battery device 20 can be attached instead of this as shown in the figure. .

As shown in FIG. 3, the battery device 20 of the present embodiment includes a main body unit 21, an adapter unit 22, and an adapter cord 23 that electrically connects them. As shown in FIG. 5, the main unit 21 has a configuration in which two battery packs 25, 25 are housed inside a battery housing case 24. The battery storage case 24 includes an upper open case body 24a that houses two battery packs 25, 25, and a lid portion 24b that is connected to the case body 24a through a hinge portion so as to be opened and closed. When the two battery packs 25, 25 are inserted into the case body 24a in an appropriate direction, the two battery packs 25, 25 are electrically connected to a power circuit board (not shown) housed in the case body 24a. Connected in series. When the lid 24b is closed, the two battery packs 25, 25 are fixed in the stored state. The closed state of the lid portion 24 b is locked by the slide lock 27.
The two battery packs 25 and 25 are, for example, 18V specification lithium ion batteries each including a plurality of battery cells in a battery case, and conventionally known ones are used. Therefore, the battery pack 25 can be used as a power source by being mounted alone on an 18V-specific power tool different from the illustrated garden tool 10. Moreover, this battery pack 25 can be repeatedly used by charging with a separate charger.
The back surface 24c (side surface in FIG. 5) of the case main body 24a is gently curved so as to fit around the waist of the user. One hook 26 is provided on the upper surface of the back surface 24c of the case body 24a. By hooking the hook 26 on, for example, a waist belt of a user, the main unit 21 can be carried while being hung on the waist.
Waist belt through holes 24d and 24d are provided on the left and right sides of the case body 24a. As shown in FIG. 1, the user P can also fix the main body unit 21 around the waist by passing the waist belt through the waist belt through holes 24d and 24d.
In addition, shoulder belt hooks 24e and 24e are provided on the left and right sides of the case body 24a. The user can also carry the main unit 21 on the shoulder by connecting both end portions of the shoulder belt to the shoulder belt hooks 24e, 24e.

An adapter cord 23 is connected to the bottom of the case body 24a. The adapter cord 23 is connected to the bottom of the case main body 24a via a connector connecting portion C1. A male connector 28 is provided at the bottom of the case body 24 a, and a female connector 29 is provided at one end of the adapter cord 23 with respect to the male connector 28. When the female connector 29 is connected to the male connector 28 and the connector connecting portion C1 is connected, and the female connector 29 is separated from the male connector 28, the connector connecting portion C1 is disconnected. For this reason, as shown in FIG. 4, the adapter cord 23 can be removed from the case main body 24a via the connector connecting portion C1.
As shown in FIG. 6, the male connector 28 is provided with a cylindrical screw shaft portion 28a. Connection terminals 28b to 28b are arranged on the inner peripheral side of the screw shaft portion 28a. Each connection terminal 28b is electrically connected to a power circuit board built in the case main body 24a.
On the other hand, the female connector 29 on the adapter cord 23 side is provided with an operation ring 29a having a screw hole 29b formed on the inner peripheral side. The operation ring 29 a is held so as to be rotatable with respect to the adapter cord 23. Terminal insertion holes 29c to 29c are provided on the inner peripheral side of the operation ring 29a. With the connection terminal 28b inserted into each terminal insertion hole 29c, the operation ring 29a is rotated to the screw tightening side and the inner peripheral side screw hole 29b is tightened to the screw shaft portion 28a. The connector connection portion C1 is connected by screwing to the male connector 28, whereby the adapter cord 23 is connected to the main unit 21. Since the female-side connector 29 and the male-side connector 28 are screwed together, inadvertent disconnection of the connector connection portion C1 is prevented. Therefore, the screw coupling structure of the screw hole 29b of the female connector 29 with respect to the screw shaft portion 28a of the male connector 28 functions as a retaining structure for the connector connecting portion C1.
When the operation ring 29a is rotated in the screw loosening direction and removed from the screw shaft portion 28a, the connector connecting portion C1 is disconnected and the adapter cord 23 can be detached from the main unit 21.
An adapter unit 22 is connected to the other end side of the adapter cord 23. The adapter unit 22 includes a slide attachment portion 22a that can be attached to the battery attachment portion 17 of the tool body 11 by sliding in the slide attachment direction indicated by an arrow in the drawing. The adapter unit 22 is electrically connected when attached to the battery mounting portion 17 of the tool body 11. However, the battery cell is not built in the adapter unit 22. For this reason, the adapter unit 22 is significantly lighter than the battery pack 25 in which the cell is built.
When the adapter unit 22 is electrically connected to the power supply circuit of the tool body 11, the body unit 21 is electrically connected to the tool body 11 via the adapter cord 23. When the main unit 21 is connected to the tool main body 11 via the adapter cord 23, power is supplied to the tool main body 11 from the two battery packs 25 and 25.

According to the battery device 20 configured as described above, by connecting the female connector 29 of the adapter cord 23 to the male connector 28 of the main unit 21, the tool body from the battery packs 25, 25 of the main unit 21. The garden tool 10 can be used by supplying power to the unit 11.
The main unit 21 is separated from the tool main body 11 and can be carried by being hooked on the waist belt of the user P or the like. For this reason, an adapter unit 22 that is significantly lighter than the battery pack 25 can be attached to the battery mounting portion 17 of the tool main body portion 11 to use the garden tool 10 in a lightened state. The user-friendliness and handleability are improved, and work efficiency can be improved.
Moreover, according to the battery device 20 of the present embodiment, if the operation ring 29a is rotated in the loosening direction and the female connector 29 is removed from the male connector 28, the main unit 21 is removed from the adapter unit 22 and the tool main body 11. Can be separated. For this reason, when the user temporarily stops the pruning operation and takes a break, if the adapter cord 23 is disconnected from the main unit 21, the garden tool 10 is placed with the main unit 21 suspended from the waist belt. You can leave the work site.
When resuming the work, if the female connector 29 of the adapter cord 23 is engaged with the male connector 28 of the main unit 21, the gardening tool 10 can be used immediately.
Thus, since the main body unit 21 containing the battery packs 25 and 25 can be separated from the tool main body 11 to which the adapter unit 22 is attached, the main body unit 21 suspended by the user P, for example, on the waist is left as it is. It is possible to move away from the garden tool 10, and in this respect, the usability and handling of the battery device 20 can be improved.
Further, since the connector connecting portion C1 of the adapter cord 23 is prevented from being detached, the power supply state to the tool main body 11 is reliably maintained, thereby preventing troubles such as inadvertent work interruption. it can.
Furthermore, the connection terminals 28b to 28b of the male connector 28 are arranged on the inner peripheral side of the screw shaft portion 28a, and the terminal connection holes 29c to 29c of the female connector 29 are arranged on the inner peripheral side of the screw hole 29b. In the connected state of the connector connecting portion C1, since the periphery of the connector connecting portion C1 is surrounded by the screw coupling portion and is not exposed to the outside, the connector connecting portion C1 can be provided with a waterproof function. Since the battery device 20 can be used even during outdoor work in rainy weather, its usability and handling can be improved.

The embodiment described above can be implemented with various modifications. For example, the screw connection structure of the screw hole 29b of the female connector 29 with respect to the screw shaft portion 28a of the male connector 28 is illustrated as the structure for preventing the connector connection portion C1 from being removed. Alternatively, it may be replaced with a structure that prevents the band from coming off with a tightening band.
Further, the male connector 28 and the female connector 29 of the connector connecting portion C1 may be interchanged. A configuration in which a female connector 29 is provided on the main unit 21 side and a male connector 28 is provided on the adapter unit 22 side and at the tip of the adapter cord 23 may be employed.
Next, the configuration in which the connector connecting portion C1 of the adapter cord 23 is set at the bottom of the main body unit 21 is illustrated. As for the connector connecting portion C1 for enabling the main body unit 21 to be separated from the adapter unit 22, for example, the adapter unit It may be set at the bottom of 21 or may be set at an intermediate position of the adapter coat 23. The battery device 32 having the connector connection portion C2 according to the former second embodiment is shown in FIG. 7, and the battery device 36 having the connector connection portion C3 according to the latter third embodiment is shown in FIG. Yes. In the second and third embodiments, the configuration other than the connector connection portions C2 and C3 is the same as that of the first embodiment, and therefore, the description thereof is omitted using the same reference numerals.
As shown in FIG. 7, in the case of the battery device 32 of the second embodiment, one end side of the adapter cord 23 is detachably connected to the bottom of the main unit 33. The other end side of the adapter cord 23 is detachably connected to the adapter unit 34 via the connector connecting portion C2.
The female connector 30 is directly attached to the rear surface of the adapter unit 34 on the front side in the slide attachment direction. The female connector 30 corresponds to the female connector 29 in the first embodiment, and includes an operation ring 30a that can be rotated. A screw hole 30b is formed on the inner peripheral side of the operation ring 30a. Further, terminal connection holes 30c to 30c are arranged on the inner peripheral side of the operation ring 30a.
A male connector 31 is provided on the other end side of the adapter cord 23 corresponding to the female connector 30. The male connector 31 corresponds to the male connector 28 in the first embodiment, and includes a cylindrical screw shaft portion 31a and a connection terminal (not visible in FIG. 7) on the inner peripheral side thereof. If the operation ring 30a is rotated in the screw tightening direction with each connection terminal inserted into the terminal connection hole 30c of the female connector 30, the male connector 31 is screwed to the female connector 30, thereby the adapter cord. 23, the main unit 33 is electrically connected to the adapter unit 34.
If the operation ring 30a of the female connector 30 is rotated in the screw loosening direction, the screw connection of the connector connecting portion C2 can be released and the adapter cord 23 can be disconnected from the adapter unit 34. For this reason, the user P can leave the garden tool 10 and the adapter unit 34 on the work site while being suspended without bothering to remove the main unit 21 from the waist belt or the like. Therefore, as in the first embodiment. Usability and handleability of the battery device 32 can be improved.
As shown in FIG. 8, in the battery device 36 according to the third embodiment, the connector connecting portion C <b> 3 of the adapter cord 23 is set at a midway position (approximately the center in the longitudinal direction) of the adapter cord 23. In the case of the third embodiment, a split cord 23 a having a length approximately half that of the adapter cord 23 is connected to the bottom of the main unit 33 so as not to be separated. A male connector 31 is attached to the tip of the split cord 23a. For this reason, in 3rd Embodiment, the main body unit 33 of the said 2nd Embodiment can be used as it is. A split cord 23b that is approximately half the length of the adapter cord 23 is connected to the rear surface of the adapter unit 22 on the near side in the slide mounting direction so as not to be separated. A female connector 29 having an operation ring 29a that can be freely rotated is attached to the tip of the split cord 23b as in the first embodiment. For this reason, in the third embodiment, the adapter unit 22 of the first embodiment can be used as it is.
By connecting the adapter unit 22 of the first embodiment and the main unit 33 of the second embodiment via the connector connection portion C3, the battery device 36 of the third embodiment can be obtained. Also by the battery device 36 of the third embodiment, the main body unit 33 can be separated from the adapter unit 22 and thus the tool main body portion 11 by disconnecting the connector connecting portion C3. Can be increased.

Next, the main unit 33 can be connected to the charger 35 via the adapter cord 23, thereby charging the battery packs 25, 25 housed therein. This fourth embodiment is shown in FIG. As shown in the drawing, an adapter cord 23 (divided cord 23a) is connected to the bottom of the main unit 33 so as not to be separated. A male connector 31 is attached to the tip of the adapter cord 23 (divided cord 23a). Therefore, the main body unit 33 of the second embodiment shown in FIG. 7 or the main body unit 33 of the third embodiment shown in FIG. 8 can be applied to the main body unit 33 shown in FIG.
In the charger 35, the female connector 30 used in the adapter unit 34 of the second embodiment is added to a known charger having a battery pack receiving portion 35a for directly connecting the battery pack 25 on the upper surface thereof. It has a configuration. The battery pack receiving portion 35 a has a slide mounting structure similar to the battery mounting portion 17 of the tool main body portion 11. One female connector 30 is directly attached to the side of the charger 35.
When the screw shaft portion 31 a of the male connector 31 on the main unit 33 side is inserted into the inner peripheral side of the operation ring 30 a of the female connector 30 of the charger 35, the connection terminal of the male connector 31 becomes the terminal of the female connector 30. If the operation ring 30a is inserted into the connection hole and rotated in the screw tightening direction with respect to the screw shaft portion 31a in this state, the connectors 31 and 30 are screwed together, and the main unit 33 is electrically connected to the charger 35. Connected to. In this way, by starting the charger 35 with the main unit 33 connected, the two battery packs 25 and 25 housed in the main unit 33 can be charged.
As described above, according to the fourth embodiment, the main body unit 33 shown in the second or third embodiment is connected to the charger 35 via the connector connecting portion C4, so that the battery pack is housed in the main body unit 33. 25, 25 can be charged, so that the two battery packs 25, 25 can be charged without taking the battery pack 25 out of the main body case 24a and attaching it to the battery pack receiving portion 35a of the charger 35 one by one. 25 charging can be performed simultaneously and quickly.
In the said 4th Embodiment, although the male side connector 31 was attached to the main body unit 33 side and the structure which attached the female side connector 30 to the charger 35 side was illustrated, the male side connector and the female side connector are replaced like the above. Also good.
Alternatively, one connector may be directly attached to the bottom of the main unit and the other connector may be attached to the charger via an adapter cord. Both male and female connectors may be connected to the main unit and the adapter cord via an adapter cord. It is good also as a structure attached to a charger.

Furthermore, in 1st-4th embodiment, it is good also as a structure which attaches the connector by the side of a main body unit 21 or another part directly or via an adapter cord. Moreover, the body unit of the type which carries not only the waist belt suspension or a shoulder but the back is also sufficient.
Furthermore, the number of battery packs housed in the main unit may be one or three or more. In the illustrated embodiment, the battery unit 20 is illustrated in which two 18V batteries are accommodated in the main unit 21 in a serial connection state and power is supplied to a 36V-specific power tool. However, the connector connection structure (connector connection) according to the present invention is illustrated. The parts C1 to C3) can be similarly applied to a battery device in which one or two or more 18V batteries are accommodated in a main body unit in a parallel connection state and power is supplied to an 18V specification electric tool. Even with this configuration, the tool body side can be reduced in weight, and the power supply time can be extended by connecting two or more battery packs in parallel.
Moreover, although the garden tool 10 was illustrated as an electric tool, it can apply widely as a battery apparatus of other electric tools, such as an electric drill for various drilling operations, a screwing machine, and a cutting machine.
Furthermore, although the configuration in which the main body unit 21 is indirectly connected to the electric tool 1 via the adapter unit 22 is exemplified, the battery device according to the present invention omits the adapter unit and the main body via the adapter cord. A similar effect can be obtained by a configuration in which the unit is directly connected to the tool body by a connector. FIG. 10 shows a battery device 37 according to the fifth embodiment. The battery device 37 of the fourth embodiment has a configuration in which the main body unit 33 exemplified in the second to fourth embodiments is directly connected to the tool main body 11 via the connector connecting portion C5.
An adapter cord 23 is pulled out from the bottom of the main unit 33, and a male connector 31 is attached to the tip thereof. On the other hand, the same female connector 30 as that of the second and fourth embodiments is attached to the rear surface of the main grip portion 13 of the tool main body portion 11.
Thus, while omitting the adapter units 22 and 34 as in the first to third embodiments, the main body unit 33 is connected to the tool main body portion via the adapter cord 23 by providing the female connector 30 in the tool main body portion 11. 11 can be directly connected to the connector, and by disconnecting the connector connecting portion C5, the main body unit 33 can be separated from the tool main body 11 while being suspended from the waist belt or the like. For this reason, while reducing the weight of the electric tool (tool main body 11) and improving the efficiency of the work, the main body unit 33 is easily separated from the tool main body 11 when the work is temporarily interrupted. Thus, the handleability of the battery device 37 can be improved.
In the first to fifth embodiments described above, the configuration in which the connector is connected at one end side of the adapter cord between the tool main body portion or the adapter unit and the main body unit is illustrated. It is good also as a structure which carries out a connector connection with respect to both a part or an adapter unit and a main body unit.

C1. Connector connecting portion (first embodiment)
P ... User 10 ... Gardening tools (Hedge clippers)
DESCRIPTION OF SYMBOLS 11 ... Tool main-body part 12 ... Sub grip part 13 ... Main grip part 14 ... Switch lever 15 ... Blade part 16 ... Protection guard board 17 ... Battery mounting part 20 ... Battery apparatus 21 ... Main body unit 22 ... Adapter unit 23 ... Adapter cord 24 ... Battery storage case 24a ... Case body, 24b ... Cover, 24c ... Back, 24d ... Waist belt through hole 24e ... Shoulder belt hook 25 ... Battery pack 26 ... Hook 27 ... Slide lock 28 ... Male connector, 28a ... Screw shaft portion, 28b ... connection terminal 29 ... female side connector, 29a ... operation ring, 29b ... screw hole, 29c ... terminal insertion hole C2 ... connector connection portion (second embodiment)
30 ... Female connector (second and fourth embodiments)
31 ... Male connector (second and fourth embodiments)
32. Battery device (second embodiment)
33 ... Main unit (second to fifth embodiments)
34 ... Adapter unit (second embodiment)
C3 ... Connector connection part (3rd Embodiment)
35 ... Charger, 35a ... Battery pack receiving part 36 ... Battery device (third embodiment)
C4 ... Connector connecting portion (fourth embodiment)
37 ... Battery device (fifth embodiment)

Claims (7)

A battery device including a main body unit containing a battery pack and an adapter cord for connecting the main body unit to a power tool as a power source,
The battery unit is configured such that the main body unit is connected to the electric power tool via the adapter cord, and the connector connecting portion is separated from the electric power tool. The battery device according to claim 1, further comprising: an adapter unit that can be attached to a battery mounting portion of the electric tool, wherein the adapter unit and the main body unit are connector-connected via the adapter cord, and the main body unit is A battery device that is indirectly connected to the power tool via the adapter unit. The battery device according to claim 1, wherein the main unit is directly connected to the electric tool via the adapter cord. The battery device according to any one of claims 1 to 3, wherein a connector connection portion is provided at a midway position of the adapter cord. 5. The battery device according to claim 1, wherein the connector connecting portion includes a retaining structure. The battery device according to any one of claims 1 to 5, wherein the connector connecting portion has a waterproof structure. The battery device according to any one of claims 1 to 6, wherein the main body unit can be connected to a charger via the connector connecting portion.

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