JP2014148013A - Power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improvement technology related to a battery installing portion, in a power tool which can be installed with two batteries.SOLUTION: A hammer drill 100 which is a power tool has a body portion 101, a hand grip 109, and two battery installing portions 160A and 160B. Two batteries 160A and 160B are respectively disposed at two places separated through the body portion 101 and/or the hand grip 109.

Description

  The present invention relates to a power tool that performs a predetermined machining operation on a workpiece.

  Japanese Patent Application Laid-Open No. 2011-161602 discloses an electric tool capable of mounting two battery packs. In the electric tool, battery mounting portions for mounting two battery packs are arranged side by side in a direction orthogonal to the battery mounting direction.

JP 2011-161602 A

  However, since the electric power tool described in Japanese Patent Application Laid-Open No. 2011-161602 has two battery mounting portions disposed adjacent to each other, the mounted battery pack is disposed at a position that does not hinder the operation of the electric power tool. There is a need. That is, there is a limit on the arrangement of the battery mounting portion, and there is room for improvement in this respect. Then, this invention is made | formed in view of the above, and aims at providing the improvement technique regarding a battery mounting part in the power tool which can mount | wear with two batteries.

  In order to achieve the above object, according to a preferred embodiment of the power tool of the present invention, a power tool is configured to drive a tip tool that is detachably attached to a drive shaft of the tip tool. The power tool includes a motor for driving the tip tool, a tool main body that accommodates the motor, a handle that is connected to the tool main body, and a battery mounting portion in which a battery for supplying current to the motor is detachably mounted. Have. And two battery mounting parts are formed, It is comprised so that an electric current can be supplied with respect to a motor from the battery with which the battery mounting part was mounted | worn. The two battery mounting portions are respectively provided at two positions separated by the tool body and / or the handle. Here, the two locations separated by the tool body and / or the handle are any of two locations on the handle, two locations on the tool body, or one location on the handle and one location on the tool body. Preferably included.

  According to the present invention, since the two battery mounting portions are arranged apart from each other, the battery mounting is compared with the configuration in which the two battery mounting portions are arranged side by side, that is, the configuration in which the two batteries are arranged side by side. The degree of freedom regarding the arrangement of the parts is increased. As a result, the space on the tool body or the handle can be used effectively. Moreover, since the two battery mounting portions are provided at positions separated from each other, the battery mounted on the battery mounting portion can be efficiently cooled.

  According to the further form of the power tool according to the present invention, the handle is provided so as to extend in a handle extending direction that intersects a drive shaft extending direction in which the drive shaft extends, and the handle extending direction. At least one end of the is connected to the tool body. One of the two battery mounting portions is provided at the other end of the handle in the handle extending direction.

  According to this embodiment, since the battery mounting portion is disposed at the end of the handle, the space at the end of the handle can be used effectively.

  According to the further form of the power tool which concerns on this invention, the other battery mounting part is provided in the one side of the tool main body regarding the handle | steering-wheel extension direction among two battery mounting parts. The arrangement of the other battery mounting portion in the present embodiment is such that the other battery mounting portion is arranged on the same side as the one battery mounting portion of the tool body with respect to the handle extending direction, and the tool extending direction is related to the tool extending direction. The aspect arrange | positioned on the opposite side to one battery mounting part of a main body is included suitably.

  According to the present embodiment, the space on the tool body can be effectively used for the arrangement of the other battery mounting portion.

  According to the further form of the power tool which concerns on this invention, the other battery mounting part is provided in the same side as one battery mounting part with respect to a drive shaft among tool main bodies among two battery mounting parts. Yes.

  According to this form, two battery mounting parts can be provided on the same side of the tool body with respect to the drive shaft. Therefore, the electrical wiring in the tool body for supplying current from the battery mounted on the same side of the tool body can be simplified.

  According to the further form of the power tool which concerns on this invention, the rotating shaft and drive shaft of the said motor are provided in parallel with the motor. In other words, a power tool having a configuration in which the rotation shaft of the motor and the drive shaft are parallel is configured.

  According to the further form of the power tool which concerns on this invention, the handle | steering-wheel has a grip part gripped by the operator, and the grip part is provided on the drive shaft.

  According to this form, when processing with respect to a to-be-processed material, an operator can give force to the grip part provided on the drive shaft. Thereby, the operator's force imparted to the grip portion during the machining operation is reasonably transmitted to the workpiece.

  According to the further form of the power tool which concerns on this invention, a handle | steering-wheel has the reinforcement part which connects the other end side of the said grip part, and the said tool main body with one end side connected to a tool main body. And the other battery mounting part is provided in the reinforcement member among two battery mounting parts.

  According to this form, a grip part can be reinforced with a reinforcement member. Therefore, the operator's force applied to the grip portion during the machining operation is reasonably transmitted to the workpiece. Moreover, the space on the reinforcing member can be used effectively by providing the battery mounting portion on the reinforcing member.

  According to the further form of the power tool which concerns on this invention, the motor is provided so that the rotating shaft and drive shaft of the said motor may cross | intersect. The other battery mounting portion of the two battery mounting portions is provided on the opposite side of the motor from the one battery mounting portion in the drive shaft extending direction.

  According to the present embodiment, two battery mounting portions can be arranged with the motor interposed therebetween in the direction in which the driving tool extends of the tip tool. Thereby, regarding arrangement | positioning of a battery mounting part, the space of the front and back of a motor can be used effectively.

  According to the further form of the power tool which concerns on this invention, the handle is provided so that it may extend in the handle extension direction which cross | intersects the drive shaft extension direction. The two battery mounting portions are provided on both sides of the tool body in the crossing direction that intersects both the drive shaft extending direction and the handle extending direction.

  According to this form, since two battery mounting parts are provided on both sides of the tool body, the space on the side surface of the tool body can be used effectively.

  According to the further form of the power tool which concerns on this invention, a battery mounting part has a battery engaging part, and it is comprised so that a battery may be hold | maintained when a battery engages with a battery engaging part. The battery engaging portion is configured to extend in a direction parallel to a virtual plane formed by the drive shaft and the handle extending shaft of the handle extending in the handle extending direction. The battery mounting portion is configured to be mounted by sliding the battery with respect to the battery engaging portion in a direction parallel to the virtual plane. As long as the battery engaging portions are configured to extend in a direction parallel to the virtual plane, the battery engaging portions formed in the respective battery mounting portions may be provided so as to cross each other. On the other hand, they may be provided parallel to each other.

  According to this embodiment, the battery can be mounted by sliding the battery with respect to the battery engaging portion in a direction parallel to a virtual plane formed by the drive shaft and the handle extending shaft. In particular, in the configuration in which the long axis direction of the battery coincides with the long axis direction of the battery engaging portion, the size of the power tool in the direction intersecting the virtual plane can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, in the power tool which can mount | wear with two batteries, the improvement technique regarding a battery mounting part can be provided.

It is a mimetic diagram showing the whole hammer drill composition concerning a 1st embodiment of the present invention. It is a schematic diagram which shows the state with which the battery pack was mounted | worn with the hammer drill of FIG. It is a perspective view which shows a battery pack. It is a top view which shows a battery pack. It is C arrow line view of FIG. It is D arrow line view of FIG. It is a schematic diagram which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 2nd Embodiment of this invention, and the said hammer drill. It is a side view which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 3rd Embodiment of this invention, and the said hammer drill. It is E arrow line view of FIG. It is a schematic diagram which shows the state by which the battery pack was mounted | worn with the whole structure and the said hammer drill of the hammer drill which concerns on 4th Embodiment of this invention. It is a side view which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 5th Embodiment of this invention, and the said hammer drill. It is F arrow line view of FIG. It is a schematic diagram which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 6th Embodiment of this invention, and the said hammer drill. It is a schematic diagram which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 7th Embodiment of this invention, and the said hammer drill. It is a schematic diagram which shows the state by which the battery pack was mounted | worn with the whole structure of the hammer drill which concerns on 8th Embodiment of this invention, and the said hammer drill.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. Embodiment of this invention is described using a battery-type hammer drill as an example of a power tool. As shown in FIG. 1, the hammer drill 100 is a striking tool that performs a drilling operation or a cutting operation on a workpiece by causing a hammer bit 119 to linearly move in the major axis direction and rotate around the major axis direction. is there. This hammer bit 119 is an implementation configuration example corresponding to the “tip tool” in the present invention.

  The hammer drill 100 is mainly composed of a main body 101 that forms an outline of the hammer drill 100 when viewed generally. A hammer bit 119 is detachably attached to the distal end region of the main body 101 via a cylindrical tool holder 159. The hammer bit 119 is held by the tool holder 159 in a state where relative reciprocation in the major axis direction is possible and relative rotation in the circumferential direction is restricted.

  The main body 101 is mainly composed of a motor housing 103 and a gear housing 105. The motor housing 103 accommodates the electric motor 110. The gear housing 105 accommodates the motion conversion mechanism 120, the striking element 140, and the power transmission mechanism 150. A hand grip 109 gripped by an operator is connected to the opposite side of the main body 101 from the hammer bit 119 with respect to the longitudinal direction of the hammer bit 119. In the present embodiment, for the sake of convenience, the hammer bit 119 side is defined as “front side” or “front side” with respect to the long axis direction of the hammer bit 119, that is, the long axis direction of the main body 101, and the hand grip 109 side is defined. , Defined as “rear side” or “rear side”. 1 is defined as “upper side” or “upper side”, and the lower side of FIG. 1 is defined as “lower side” or “lower side”.

  That is, in the main body 101, the gear housing 105 is disposed in the front and the motor housing 103 is disposed in the rear in the long axis direction of the hammer bit 119. Further, a hand grip 109 is disposed behind the motor housing 103. The main body 101 is an implementation configuration example corresponding to the “tool main body” in the present invention. Further, the hand grip 109 is an implementation configuration example corresponding to the “handle” in the present invention.

  The electric motor 110 is arranged so that the rotation axis is parallel to the long axis direction of the hammer bit 119. This electric motor 110 is an implementation configuration example corresponding to the “motor” in the present invention.

  The rotation output of the electric motor 110 is appropriately converted into a linear motion by the motion conversion mechanism 120 and then transmitted to the striking element 140, and the major axis of the hammer bit 119 is transmitted to the hammer bit 119 via the striking element 140. An impact force in the direction (left-right direction in FIG. 1) is generated. Further, the rotational output of the electric motor 110 is appropriately decelerated by the power transmission mechanism 150 and then transmitted to the hammer bit 119, and the hammer bit 119 is rotated in the circumferential direction. That is, the drive shaft of the hammer bit 119 is configured to coincide with the major axis direction of the hammer bit 119. Therefore, the major axis direction of the hammer bit 119 is defined as the drive shaft extending direction in which the drive shaft extends. The electric motor 110 is energized and driven by pulling a trigger disposed on the handgrip 109. The detailed configuration of the motion conversion mechanism 120, the striking element 140, and the power transmission mechanism 150 will not be described for convenience.

  The hand grip 109 is mainly composed of a grip portion 109A and a support member 107. The grip portion 109 </ b> A is disposed on the hammer axis of the hammer bit 119 so as to extend in the vertical direction (also referred to as a handle extending direction) in FIG. 1 intersecting the long axis direction of the hammer bit 119. Therefore, when processing the workpiece, the operator can apply a force to the grip portion provided on the drive shaft. Thereby, the operator's force imparted to the grip portion 109A during the machining operation is reasonably transmitted to the workpiece. The grip portion 109A is an implementation configuration example corresponding to the “grip portion” in the present invention.

  The upper end of the grip portion 109A is connected to the upper portion of the motor housing 103, and the lower end of the grip portion 109A is connected to the support member 107. Further, the upper end of the support member 107 is connected to the motor housing 103. Thereby, in the hand grip 109, the support portion 107 reinforces the grip portion 109A. This support member 107 is an implementation configuration example corresponding to the “reinforcing member” in the present invention.

  A battery mounting portion 160A for mounting a battery is formed at the lower end of the hand grip 109. A battery mounting portion 160 </ b> B is formed in the lower portion of the motor housing 103. That is, the battery mounting portion 160A and the battery mounting portion 160B are arranged via the hand grip 109 and the motor housing 103 of the main body 101. Thereby, the battery mounting part 160A and the battery mounting part 160B are respectively arranged at two spaced locations. Battery packs 170A and 170B for supplying current to the electric motor 110 are detachably mounted on the two battery mounting portions 160A and 160B, respectively. The battery mounting portions 160A and 160B are an implementation configuration example corresponding to the “battery mounting portion” in the present invention. The battery packs 170A and 170B are implementation configuration examples corresponding to the “battery” in the present invention.

  As shown in FIG. 1, the battery mounting portions 160A and 160B have guide rails 161 that can be engaged with the batteries 170A and 170B, and concave locking portions that can be locked with the hooks 175 of the battery packs 170A and 170B ( A terminal (not shown) to which the terminals 179 of the battery packs 170A and 170B are electrically connected is provided. The guide rail 161 is provided parallel to the major axis direction of the hammer bit 119. In other words, the guide rail 161 extends in a direction parallel to a virtual plane formed by the drive shaft of the hammer bit 119 and the extending shaft from which the grip portion 109A extends. Thereby, the battery pack 170A is slid in the direction of the arrow 1A in FIG. 2 parallel to the long axis direction of the hammer bit 119 and mounted on the battery mounting portion 160A, and the battery pack 170B is mounted on the long axis direction of the hammer bit 119. It is slid in the direction of arrow 1B in FIG. This guide rail 161 is an implementation configuration example corresponding to the “battery engaging portion” in the present invention.

    3 to 6 show details of the battery packs 170A and 170B. As shown in FIG. 3, the battery packs 170 </ b> A and 170 </ b> B are mainly composed of a substantially rectangular battery case 171 and a plurality of battery cells (not shown for convenience) accommodated in the battery case 171. Composed. The battery packs 170A and 170B are detachably mounted on the battery mounting portions 160A and 160B by sliding along the lower surfaces of the battery mounting portions 160A and 160B. The battery packs 170A and 170B have the same shape and can be mounted on any of the battery mounting portions 160A and 160B.

  As shown in FIG. 3, a pair of mounting guides 173 extending linearly along the longitudinal direction of the batteries 170 </ b> A and 170 </ b> B are provided on the upper surface side of the battery case 171. The mounting guide 173 is configured to engage with the guide rails 161 of the battery mounting portions 160A and 160B.

  Further, as shown in FIGS. 3 to 6, a hook 175 for locking the batteries 170 </ b> A and 170 </ b> B with respect to the battery mounting portions 160 </ b> A and 160 </ b> B and a push for releasing the lock are provided at the center of the upper surface of the battery case 171. A button 177 is provided. The hook 175 is biased by a spring (not shown for convenience) so as to protrude from the upper surface of the battery case 171. The push button 177 is disposed on the rear side in the mounting direction of the battery case 171. When the push button 177 is pressed, the hook 175 moves in a direction in which the hook 175 is retracted from the upper surface of the battery case 171. And mechanically connected.

  As shown in FIG. 2, when the batteries 170A and 170B are mounted on the battery mounting portions 160A and 160B, the hooks 175 engage with the locking portions of the battery mounting portions 160A and 160B, and the batteries 170A and 170B are mounted on the battery. It is fixed with respect to the portions 160A and 160B. At this time, the terminals 179 of the batteries 170A and 170B are electrically connected to the terminals of the battery mounting portions 160A and 160B, and current can be supplied to the hammer drill 100.

  According to the first embodiment, since the battery packs 170A and 170B are detachably mounted on the battery mounting portions 160A and 160B, respectively, if the hammer drill 100 is, for example, 36V specification, the 18V battery pack 170A, 170B is mounted and electrically connected in series. Since the 18V battery pack is lighter than the 36V battery pack, the operator can easily attach and detach the battery packs 170A and 170B. If the hammer drill 100 is, for example, in the 18V specification, the two battery packs 170A and 170B may be configured to be electrically connected in parallel. Furthermore, when the hammer drill 100 can be driven by either 36V or 18V, the connection mode of the battery packs 170A and 170B may be switched between series and parallel. In this case, it is preferable to provide a selector switch that can switch the connection mode of the battery packs 170A and 170B by an operator.

  In general, the battery packs 170A and 170B are formed in a substantially rectangular shape that is long on one side. According to the first embodiment, the guide rails 161 of the respective battery mounting portions 160A and 160B are provided so as to extend in the longitudinal direction of the hammer bit 119, and the battery packs 170A and 170B are provided with the hammer bit 119. The battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B in such a manner that the longitudinal directions of the battery packs 170A and 170B coincide with the long axis direction of the hammer bit 119. Therefore, in the hammer drill 100 to which two battery packs can be attached, the length of the hammer drill 100 in the left-right direction (direction intersecting the long axis direction of the hammer bit 119) can be shortened.

  Further, according to the first embodiment, the battery packs 170A and 170B are slid along the guide rails 161 of the battery mounting portions 160A and 160B by sliding the mounting guides 173 of the battery packs 170A and 170B. The mounting operation for mounting on 160B can be easily performed.

  In addition, according to the first embodiment, since the battery mounting portions 160A and 160B are provided at spaced positions, the battery packs 170A and 170B are mounted at spaced positions. Therefore, battery packs 170A and 170B mounted on battery mounting portions 160A and 160B can be efficiently cooled.

  Further, according to the first embodiment, the battery mounting portion 160A is disposed below the handgrip 109, and the battery mounting portion 160B is disposed below the motor housing 103, so that there is no hindrance to the machining operation by the hammer drill 100. By utilizing this, a plurality of battery mounting portions can be rationally arranged with respect to the hammer drill 100.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. The hammer drill 100 according to the second embodiment differs from the hammer drill 100 according to the first embodiment in the location of the battery mounting portion 160B. The configuration other than the battery mounting portion 160B is the same as the configuration of the hammer drill 100 of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 7, in the second embodiment, a battery mounting portion 160 </ b> A is provided below the main body 101 (downward in FIG. 7) in the vertical direction (handle extending direction) in FIG. 7 in which the handgrip 109 extends. The battery mounting portion 160B is disposed above the main body 101 (upper side in FIG. 7). Battery pack 170A slides in the direction of arrow 2A in FIG. 7 and is attached to battery mounting portion 160A, and battery pack 170B slides in the direction of arrow 2B in FIG. 7 and is attached to battery mounting portion 160B. . The directions of arrows 2A and 2B are parallel to the drive shaft extending direction in which the drive shaft of hammer bit 119 extends. In the second embodiment, the mounting directions of the battery packs 170A and 170B are different from each other, but the mounting directions of the battery packs 170A and 170B may be the same. On the other hand, the battery pack 170A slides in the direction of arrow 2B and is attached to the battery mounting portion 160A, and the battery pack 170B slides in the direction of arrow 2A and is attached to the battery mounting portion 160B. Battery mounting portions 160A and 160B may be configured.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. The hammer drill 100 according to the third embodiment differs from the hammer drill 100 according to the first embodiment in the location of battery mounting portions 160A and 160B. The configuration other than the battery mounting portions 160A and 160B is the same as that of the hammer drill 100 of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  As shown in FIGS. 8 and 9, in the third embodiment, both the major axis direction of the hammer bit 119 (left and right direction in FIG. 8) and the direction in which the handgrip 109 extends (up and down direction in FIG. 8). Battery mounting portions 160 </ b> A and 160 </ b> B are respectively disposed on both sides of the main body portion 101 in the direction intersecting the direction (the left-right direction in FIG. 9). The battery packs 170A and 170B slide in the direction of the arrow 3A in FIG. 8 and are mounted on the respective battery mounting portions 160A and 160B. The direction of the arrow 3A is a direction parallel to the drive shaft extending direction in which the drive shaft of the hammer bit 119 extends.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG. The hammer drill 100 according to the fourth embodiment is different from the hammer drill 100 according to the first embodiment in the shape of the motor housing 103, the arrangement direction of the electric motor 110, and the arrangement positions of the battery mounting portions 160A and 160B. About a structure other than the said structure, it is the structure similar to the hammer drill 100 of 1st Embodiment, attaches | subjects the same code | symbol and abbreviate | omits description.

  As shown in FIG. 10, the electric motor 110 is disposed so that the rotating shaft of the electric motor 110 and the drive shaft of the hammer bit 119 intersect each other. A motor housing 103 that houses the electric motor 110 is formed to extend downward from the gear housing 105 in FIG.

  In the hammer drill 100 of the fourth embodiment, the battery mounting portion 160A is disposed below the handgrip 109 in the direction in which the handgrip 109 extends (the vertical direction in FIG. 10). On the other hand, the battery mounting portion 160 </ b> B is disposed along the motor housing 103 in front of the motor housing 103. In other words, the battery mounting portions 160 </ b> A and 160 </ b> B are arranged with the electric motor 110 interposed therebetween in the long axis direction of the hammer bit 119.

  Battery pack 170A slides in the direction of arrow 4A and is mounted on battery mounting portion 160A, and battery pack 170B slides in the direction of arrow 4B and is mounted on battery mounting portion 160B. The directions of arrows 4A and 4B are parallel to a virtual plane formed by the driving shaft of the hammer bit 119 and the extending shaft from which the grip portion 109A of the handgrip 109 extends.

(Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIGS. The hammer drill 100 according to the fifth embodiment is different from the hammer drill 100 according to the fourth embodiment in that the battery mounting portions 160A and 160B are disposed and the additional device mounting portion 180 is provided. The configuration other than the location where the battery mounting portions 160A and 160B are arranged is the same as the configuration of the hammer drill 100 of the fourth embodiment, and the description thereof will be omitted by attaching the same reference numerals.

  In the hammer drill 100 of the fifth embodiment, the two battery mounting portions 160A and 160B are arranged in the longitudinal direction of the hammer bit 119 (left and right direction in FIG. 11) and the direction in which the handgrip 109 extends (up and down direction in FIG. 11). They are arranged on both sides of the main body 101 in the direction intersecting both directions (the left-right direction in FIG. 12). The battery packs 170A and 170B slide in the direction of the arrow 5A in FIG. 11 and are attached to the respective battery attachment portions 160A and 160B. The direction of the arrow 5A is a direction parallel to the drive shaft extending direction in which the drive shaft of the hammer bit 119 extends.

  In the fifth embodiment, an additional device mounting portion 180 is formed in the lower part of the hand grip 109. The additional device mounting portion 180 is formed with an engaging portion (not shown). For example, a battery pack larger than the battery packs 170A and 170B, a dust collecting device, and the like are engaged with and held by the engaging portion. The

(Sixth embodiment)
Next, a sixth embodiment will be described with reference to FIG. The hammer drill 100 according to the sixth embodiment differs from the hammer drill 100 according to the first embodiment in the location where the hand grip 109 is connected to the main body 101 and the location where the battery mounting portions 160A and 160B are arranged. About a structure other than the said structure, it is the structure similar to the hammer drill 100 of 1st Embodiment, attaches | subjects the same code | symbol and abbreviate | omits description.

  In the sixth embodiment, the hand grip 109 is connected to the lower part of the motor housing 103 as shown in FIG. The grip portion 109 is provided so as to extend from the lower portion of the motor housing 103 in the vertical direction (handle extending direction) in FIG. 13 that intersects the long axis direction of the hammer bit 119. The upper end of the grip portion 109A is connected to the motor housing 103, and the lower end of the grip portion 109A is connected to the support member 107. Further, the upper end of the support member 107 is connected to the motor housing 103. Thereby, in the hand grip 109, the support portion 107 reinforces the grip portion 109A.

  In the hammer drill 100 of the sixth embodiment, the battery mounting portion 160A is disposed below the handgrip 109 in the direction in which the handgrip 109 extends (the vertical direction in FIG. 13). On the other hand, the battery mounting portion 160 </ b> B is disposed along the support member 107 in front of the support member 107. Battery pack 170A slides in the direction of arrow 6A and is mounted on battery mounting portion 160A, and battery pack 170B slides in the direction of arrow 6B and is mounted on battery mounting portion 160B. The directions of the arrows 6A and 6B are parallel to a virtual plane formed by the driving shaft of the hammer bit 119 and the extending shaft from which the grip portion 109A of the handgrip 109 extends.

(Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIG. The hammer drill 100 according to the seventh embodiment is different from the hammer drill 100 according to the sixth embodiment in that the support member 107 is not provided and the arrangement location of the battery mounting portion 160B is different. The configuration other than the place where the support member 107 and the battery mounting portion 160B are arranged is the same as the configuration of the hammer drill 100 of the sixth embodiment, and the description thereof will be omitted by attaching the same reference numerals.

  In the hammer drill 100 according to the seventh embodiment, the battery mounting portion 160A is disposed below the handgrip 109 in the vertical direction (handle extending direction) in FIG. 14 where the handgrip 109 extends. On the other hand, the battery mounting portion 160B is disposed below the main body portion 101 (below the motor housing 103 and the gear housing 105). The battery pack 170A is configured to slide in the direction of arrow 7A and is mounted on the battery mounting portion 160A, and the battery pack 170B is mounted in the battery mounting portion 160B by sliding in the direction of arrow 7B. The directions of arrows 7A and 7B are parallel to a virtual plane formed by the driving shaft of the hammer bit 119 and the extending shaft from which the grip portion 109A of the handgrip 109 extends.

  In the second to seventh embodiments described above, the same effects as in the first embodiment can be obtained. Furthermore, according to the second, third, and fifth embodiments, since the batteries 170A and 170B are arranged with the drive shaft of the hammer bit 119 interposed therebetween, the center of gravity of the hammer drill 100 can be brought closer to the drive shaft.

(Eighth embodiment)
Next, an eighth embodiment will be described with reference to FIG. The hammer drill 100 according to the eighth embodiment is different from the hammer drill 100 according to the first embodiment in that only one battery mounting portion is provided. The configuration other than the battery mounting portion is the same as the configuration of the hammer drill 100 of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  In the hammer drill 100 of the eighth embodiment, the battery mounting portion 160A is disposed at the lower portion of the main body portion 101 (lower portion of the motor housing 103). A battery pack 107A corresponding to a voltage required to drive the electric motor 110 is mounted on the battery mounting portion 160A. Battery pack 170A is configured to slide in the direction of arrow 8A and to be mounted on battery mounting portion 160A. The direction of the arrow 8A is a direction parallel to the drive shaft extending direction in which the drive shaft of the hammer bit 119 extends.

  According to the eighth embodiment, since the battery mounting portion 160A is provided in the motor housing 103, the center of gravity of the hammer drill 100 can be brought close to the drive shaft of the hammer bit 119. Further, the space on the main body 101 of the hammer drill 100 can be used effectively in order to mount the battery mounting portion 160A.

  In the above, the battery packs 170A and 170B slide in a direction parallel to a virtual plane formed by the driving shaft of the hammer bit 119 and the extending shaft from which the grip portion 109A of the handgrip 109 extends. Although it was comprised so that it might be mounted | worn with mounting part 160A, 160B, it is not restricted to this. For example, the battery packs 170A and 170B may be configured to be mounted on the battery mounting portions 160A and 160B by sliding in the direction crossing the virtual plane. In other words, the mounting direction of the battery packs 170A and 170B is not limited in the present invention.

  In the above description, the hammer bit 119 has been described as the hammer drill 100 in which the hammering operation and the rotation operation are performed as an example of the power tool, but is not limited thereto. For example, the present invention can be applied to a hammer in which the hammer bit 119 performs only a striking operation as a striking tool. In addition, the present invention can be applied to a drill in which the hammer bit 119 performs only a rotating operation. In addition, the present invention can be applied to an electric driver, an electric wrench, an electric grinder, an electric reciprocating saw, and an electric jigsaw.

In view of the gist of the present invention, the power tool according to the present invention can be configured in the following manner.
(Aspect 1)
"A power tool that drives a tip tool that is detachably attached to a drive shaft of the tip tool,
A motor for driving the tool bit;
A tool body for housing the motor;
A battery mounting portion on which a battery for supplying current to the motor is detachably mounted, and two battery mounting portions are formed, and the motor is driven from the battery mounted on the battery mounting portion. Is configured to supply current to
The two battery mounting portions are disposed apart from each other in a direction in which the drive shaft extends. "

(Aspect 2)
"A power tool that drives a tip tool that is detachably attached to a drive shaft of the tip tool,
A motor for driving the tool bit;
A tool body for housing the motor;
A battery mounting portion on which a battery for supplying current to the motor is detachably mounted, and two battery mounting portions are formed, and the motor is driven from the battery mounted on the battery mounting portion. Is configured to supply current to
The power tool, wherein the two battery mounting portions are spaced apart in a direction intersecting a direction in which the drive shaft extends. "

(Aspect 3)
“The power tool according to aspect 1 or 2,
The battery mounting portion includes a battery engaging portion, and is configured to hold the battery by engaging the battery with the battery engaging portion.
The impact tool, wherein the battery engaging portion is configured along the drive shaft. "

(Correspondence between each component of this embodiment and each component of the present invention)
The correspondence between each component of the present embodiment and each component of the present invention is shown as follows. In addition, this embodiment shows an example of the form for implementing this invention, and this invention is not limited to the structure of this embodiment.
The main body 101 is an example of a configuration corresponding to the “tool main body” of the present invention.
The hammer bit 119 is an example of a configuration corresponding to the “tool bit” of the present invention.
The electric motor 110 is an example of a configuration corresponding to the “motor” of the present invention.
The battery mounting portions 160A and 160B are an example of a configuration corresponding to the “battery mounting portion” of the present invention.
The support member 107 is an example of a configuration corresponding to the “reinforcing member” of the present invention.
The hand grip 109 is an example of a configuration corresponding to the “handle” of the present invention.
The guide rail 161 is an example of a configuration corresponding to the “battery engaging portion” of the present invention.

DESCRIPTION OF SYMBOLS 100 Hammer drill 101 Main body part 103 Motor housing 105 Gear housing 107 Support member 109 Hand grip 109A Grip part 110 Electric motor 119 Hammer bit 120 Motion conversion mechanism 140 Striking element 150 Power transmission mechanism 159 Tool holder 160 Mounting part 160A Battery mounting part 160B Battery mounting Portion 161 guide rail 170A battery pack 170B battery pack 171 battery case 173 mounting guide 175 hook 177 push button 179 terminal 180 additional device mounting portion

Claims (10)

A power tool for driving a detachably attached tip tool with respect to a drive shaft of the tip tool,
A motor for driving the tool bit;
A tool body for housing the motor;
A handle connected to the tool body;
A battery mounting portion on which a battery for supplying current to the motor is detachably mounted, and two battery mounting portions are formed, and the motor is driven from the battery mounted on the battery mounting portion. Is configured to supply current to
The two battery mounting portions are respectively provided at two positions separated by the tool body and / or the handle. The power tool according to claim 1,
The handle is provided so as to extend in a handle extending direction that intersects a drive shaft extending direction in which the drive shaft extends, and at least one end in the handle extending direction is provided in the tool body. Are configured to be connected,
The power tool, wherein one of the two battery mounting portions is provided at the other end of the handle in the handle extending direction. The power tool according to claim 2,
The other battery mounting portion of the two battery mounting portions is provided on one side of the tool body in the handle extending direction. The power tool according to claim 3,
The other battery mounting part of the two battery mounting parts is provided on the same side as the one battery mounting part with respect to the drive shaft in the tool body. The power tool according to any one of claims 2 to 4, wherein
The power tool, wherein the motor has a rotation shaft of the motor and the drive shaft provided in parallel. The power tool according to claim 5,
The handle has a grip portion to be gripped by an operator,
The power tool, wherein the grip portion is provided on the drive shaft. The power tool according to claim 5,
The handle has a grip portion whose one end side is connected to the tool body, and a reinforcing member that connects the other end side of the grip portion and the tool body,
Of the two battery mounting portions, the other battery mounting portion is provided on the reinforcing member. The power tool according to claim 2,
The motor is provided so that the rotation shaft of the motor and the drive shaft intersect,
The other battery mounting portion of the two battery mounting portions is provided on the opposite side of the motor from the one battery mounting portion in the drive shaft extending direction. . The power tool according to claim 1,
The handle is provided so as to extend in a handle extending direction intersecting the drive shaft extending direction,
Two said battery mounting parts are provided in the both sides of the said tool main body in the cross | intersection direction which cross | intersects both the said drive shaft extension direction and the said handle extension direction. The power tool according to any one of claims 1 to 9,
The battery mounting portion has a battery engaging portion, and is configured to hold the battery by engaging the battery with the battery engaging portion.
The battery engaging portion is configured to extend in a direction parallel to a virtual surface formed by the drive shaft and a handle extending shaft of the handle extending in the handle extending direction,
The power tool configured to be mounted on the battery mounting portion by sliding the battery with respect to the battery engaging portion in a direction parallel to the virtual plane.

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