WO2014119759A1 - Hammering tool - Google Patents

Abstract

[Problem] To provide a technology that contributes to reducing the weight of a hammering tool powered by a plurality of batteries. [Solution] A hammering tool that has the following: a motor (110) for driving a tool bit (119); a tool body (101) that contains said motor (110); a handle (109) attached to the tool body (101); and a plurality of battery mounts (160A, 160B) to which batteries (170A, 170B) are removably mounted. The handle (109) is provided so as to extend in a handle-extension direction that is not parallel to a long axis, and the battery mounts (160A, 160B) are affixed to the tool body (101) so as to be not removable therefrom.

Description

Impact tool

The present invention relates to an impact tool for performing a predetermined processing operation on a workpiece.

Japanese Patent Application Laid-Open No. 2011-161602 discloses an electric tool that uses a plurality of battery packs as a power source. In the above electric power tool, a plurality of battery packs are attached to the tool body via an adapter.

The power tool is preferably lightweight in order to reduce the burden on the operator. In particular, in an electric tool to which a battery pack is attached, the battery pack is often a relatively heavy component.

Since the battery pack is heavy, there is a strong demand for reducing the weight of the electric tool in which the battery pack is mounted.

Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide a technique that contributes to weight reduction in an impact tool using a plurality of batteries as a power source.

The above problem is solved by the present invention. According to a preferred embodiment of the impact tool according to the present invention, an impact tool that linearly moves on an impact shaft in which a tool bit extends at least in a predetermined major axis direction is configured. The impact tool includes a motor for driving a tool bit, a tool main body for housing the motor, a handle connected to the tool main body, and a battery mounting portion on which a battery for supplying current to the motor is detachably mounted. And have. A plurality of battery mounting portions are provided. The handle is provided so as to extend in a handle extending direction that intersects the longitudinal direction. The plurality of battery mounting portions are fixed to the tool body so as not to be detached from the impact tool.

According to the present invention, the striking tool includes a plurality of battery mounting portions on which a battery is detachably mounted, and these battery mounting portions are fixed to the tool body so as not to be detached from the striking tool. In particular, in the present invention, typically, the battery is directly attached to the battery attachment portion without using an adapter. Therefore, an adapter becomes unnecessary compared with the impact tool with which a battery is mounted | worn via an adapter. As a result, a lightweight impact tool is provided. “Unremovable” refers to a structure in which a part or the whole of the battery mounting portion cannot be easily removed from the impact tool. That is, it is a so-called non-adapter structure that does not have an adapter that can be easily attached and detached. For example, the battery mounting part is formed in the partial region of the tool body or the handle. In other words, the battery mounting portion is set as a configuration that does not allow the battery mounting portion to be freely attached to and detached from the impact tool, that is, a configuration that prohibits the battery mounting portion from being freely attached and detached. In addition, although this invention does not prohibit even the disassembly possibility of a battery mounting part, disassembly may be sufficient. “Fixed” means a state in which the battery mounting portion does not move relative to the tool body. For example, a mode in which a part or the whole of the battery mounting portion is integrated directly or indirectly with the tool body is suitably included. That is, a mode in which a part or the whole of the battery mounting portion is integrally formed with the tool main body, or a mode in which the battery mounting portion is fixed to the tool main body by welding, bonding, rivets, screws or the like is suitably included.

According to the further form of the impact tool which concerns on this invention, a battery mounting part has a battery engaging part which a battery can engage, and hold | maintains the said battery by engaging a battery with a battery engaging part. . And a battery mounting part is mounted | worn with the said battery because a battery slides with respect to a battery engaging part.
According to this form, a battery is mounted | worn with a battery mounting part by sliding a battery with respect to a battery engaging part. Therefore, the battery mounting operation can be performed easily.

According to the further form of the impact tool which concerns on this invention, a some battery mounting part is mounted | worn when each battery moves to the same direction.
According to the present embodiment, each battery can be attached and detached from the same side of the tool body, so that the battery can be easily attached and detached.

According to the further form of the impact tool which concerns on this invention, while a some battery mounting part is provided along with the major axis direction, the cross direction which a battery cross | intersects both the major axis direction and the handle extension direction Mounted by moving to.
According to this embodiment, since the plurality of battery mounting portions are provided side by side, a plurality of batteries can be arranged in a compact manner. As a result, the arrangement of the electrical wiring relating to the battery mounting portion is simplified.

According to the further form of the impact tool which concerns on this invention, while a some battery mounting part is provided along with the crossing direction which cross | intersects both the major axis direction and a handle extension direction, a battery is a major axis direction. It is mounted by moving in a direction parallel to the.

According to this embodiment, since the plurality of battery mounting portions are provided side by side, a plurality of batteries can be arranged in a compact manner. As a result, the arrangement of the electrical wiring relating to the battery mounting portion is simplified.

According to the further form of the impact tool which concerns on this invention, two battery mounting parts are provided along with the straight line extended in a predetermined direction among several battery mounting parts. Then, the battery is mounted on one of the two battery mounting portions by sliding the battery with respect to the battery engaging portion in a direction approaching the other battery mounting portion. In addition, the battery is mounted on the other battery mounting portion of the two battery mounting portions by sliding the battery relative to the battery engaging portion in a direction approaching the one battery mounting portion.
According to this embodiment, two batteries are held facing each other. Further, the battery can be easily attached by sliding each battery on the battery engaging portion.

According to the further form of the impact tool which concerns on this invention, a battery slides with respect to a battery engaging part in the cross | intersection direction which cross | intersects both the major axis direction and the handle extension direction, and a battery is Mounted on the battery mounting section.
According to this form, the direction (detachment direction) moved when the battery is removed intersects with the vibration direction generated by the tool bit striking operation. Therefore, the possibility that the battery is dropped from the battery mounting portion due to the influence of vibration is reduced.

According to the further form of the impact tool which concerns on this invention, two battery mounting parts are each provided in two places spaced apart by the tool main body and / or a handle among several battery mounting parts.
According to this embodiment, since the battery mounting portions are provided at two spaced locations, respectively, the degree of freedom in design regarding the arrangement location of the battery mounting portion is increased.

According to the further form of the impact tool which concerns on this invention, the motor is provided so that the rotating shaft and impact axis | shaft of the said motor may become parallel.
According to this embodiment, an impact tool in which the rotation axis of the motor and the impact axis are parallel is configured.

According to the further form of the impact tool which concerns on this invention, a handle | steering-wheel has a grip part gripped by the operator, and the said grip part is provided on the impact axis.
According to this form, the impact tool in which the grip portion of the handle is provided on the impact axis is configured.

According to the further form of the impact tool which concerns on this invention, the handle | steering-wheel has the reinforcement part which further connects the grip part by which the one end side was connected with the tool main body, and the other end side of the said grip part, and a tool main body. . And at least 1 battery mounting part is provided in the reinforcement member among several battery mounting parts. Note that two or more battery mounting portions may be provided on the reinforcing member.
According to this form, a reinforcement member can be utilized as a battery mounting part, and a battery mounting part is arrange | positioned rationally.

According to the further form of the impact tool which concerns on this invention, the motor is provided so that the rotating shaft and impact shaft of the said motor may cross | intersect.
According to this embodiment, an impact tool in which the rotation axis of the motor and the impact axis intersect is configured.

According to the further form of the impact tool according to the present invention, two battery mounting portions among the plurality of battery mounting portions are arranged in the crossing direction intersecting both the major axis direction and the handle extending direction. It is provided on each side.
According to this form, a battery mounting part is arrange | positioned using the side surface of a tool main body.

According to the present invention, in an impact tool using a plurality of batteries as a power source, the impact tool is reduced in weight.
Other features, actions, and advantages of the present invention can be readily understood with reference to the specification, claims, and accompanying drawings.

It is sectional drawing which shows the whole structure of the hammer drill which concerns on 1st Embodiment of this invention. It is an enlarged view which shows the mounting state of the battery pack attached to the battery mounting part. It is A arrow directional view of FIG. It is a B arrow line view of FIG. It is a figure which shows the terminal of a battery mounting part. 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 a D arrow line view of FIG. It is a schematic diagram which shows the structure of the hammer drill which concerns on 2nd Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is the schematic diagram which looked at the hammer drill of FIG. 10 from back. It is a schematic diagram which shows the structure of the hammer drill which concerns on 3rd Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is the schematic diagram which looked at the hammer drill of FIG. 12 from back. It is a schematic diagram which shows the modification of 3rd Embodiment. It is a schematic diagram which shows the structure of the hammer drill which concerns on 4th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 5th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is the schematic diagram which looked at the hammer drill of FIG. 16 from back. It is a schematic diagram which shows the structure of the hammer drill which concerns on 6th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 7th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 8th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 9th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 10th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 11th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 12th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 13th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 14th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 15th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the structure of the hammer drill which concerns on 16th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is the schematic diagram which looked at the hammer drill of FIG. 28 from back. It is a schematic diagram which shows the structure of the hammer drill which concerns on 17th Embodiment of this invention, and arrangement | positioning of the battery pack with respect to the said hammer drill. It is a schematic diagram which shows the hammer drill which concerns on 18th Embodiment of this invention.

The configurations and methods according to the above and the following description are separately or separately from other configurations and methods in order to realize the manufacture and use of the “blow tool” according to the present invention and the use of the components of the “blow tool”. Can be used in combination. Exemplary embodiments of the present invention include these combinations and will be described in detail with reference to the accompanying drawings. The following detailed description is only to teach those skilled in the art with detailed information to implement preferred embodiments of the invention, and the scope of the invention is not limited by the detailed description, but is limited by the scope of the claims. It is determined based on the description. For this reason, combinations of configurations and method steps in the following detailed description are not all essential to implement the present invention in a broad sense, but are described in detail with reference numerals in the accompanying drawings. However, only representative embodiments of the present invention are disclosed.
(First embodiment)
A first embodiment of the present invention will be described below with reference to FIGS. 1st Embodiment demonstrates using a battery-type hammer drill as an example of an impact tool. As shown in FIG. 1, an electric hammer drill 100 is provided with a hammer bit 119, and the hammer bit 119 that is mounted is struck in the major axis direction and rotated around the major axis direction. It is a striking tool that performs drilling and chipping. This hammer bit 119 is an implementation configuration example corresponding to the “tool bit” in the present invention.

The hammer drill 100 is configured mainly by a main body 101 that forms an outer shell 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 inserted into the bit insertion hole of the tool holder 159 and can be relatively reciprocated in the major axis direction, and is held in a state where relative rotation in the circumferential direction is restricted. Is done.

The main body 101 mainly includes a motor housing 103 that houses the electric motor 110, a motion conversion mechanism 120, a striking element 140, and a gear housing 105 that houses 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. The main body 101 corresponds to the “tool main body” in the present invention, and the hand grip 109 is an implementation configuration example corresponding to the “handle” in the present invention.

In the present embodiment, for convenience of explanation, with respect to the major axis direction of the hammer bit 119, that is, the major axis direction of the main body 101, the hammer bit 119 side is defined as the “front side of the hammer drill 100” and the hand grip 109 side is defined as “ It is defined as “the rear side of the hammer drill 100”. 1 is defined as “the upper side of the hammer drill 100”, and the lower side of FIG. 1 is defined as “the lower side of the hammer drill 100”.

The main body 101 has a configuration in which 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. The hand grip 109 is arranged behind the motor housing 103. The motor housing 103 extends downward from the lower surface of the gear housing 105, and the electric motor 110 is disposed in the extended region. The electric motor 110 is arranged so that the rotation axis of the electric motor 110 extends while being inclined with respect to the vertical direction, and intersects the striking axis extending in the major axis direction of the hammer bit 119. This electric motor 110 is an implementation configuration example corresponding to the “motor” in the present invention.

That is, the hammer drill 100 of the first embodiment has a configuration in which the hammering shaft of the hammer bit 119 intersects with the rotation shaft of the electric motor 110. Hereinafter, the hammer drill having such a configuration is referred to as a hammer drill of the first type for convenience. Note that each of the motor housing 103, the gear housing 105, and the handgrip 109 constituting the main body 101 is configured by joining the left and right housing members to each other with respect to the longitudinal direction of the hammer bit 119.

The rotation output of the electric motor 110 is converted into a linear motion by the motion converting mechanism 120 and then transmitted to the striking element 140, and the hammer bit 119 passes through the striking element 140 in the major axis direction (the left-right direction in FIG. 1). Generates an impact force. The rotation output of the electric motor 110 is transmitted to the hammer bit 119 after being decelerated by the power transmission mechanism 150, and the hammer bit 119 is rotated in the circumferential direction. The electric motor 110 is energized and driven by a pulling operation of a trigger 109 a disposed on the hand grip 109.

The motion conversion mechanism 120 is disposed above the motor shaft 111 of the electric motor 110 and is a mechanism that converts the rotational output of the motor shaft 111 into a linear motion in the longitudinal direction of the hammer drill 100. The motion conversion mechanism 120 swings in the front-rear direction of the hammer drill 100 as the intermediate shaft 121 rotated by the motor shaft 111, the rotating body 123 attached to the intermediate shaft 121, and the rotation of the intermediate shaft 121 (rotating body 123). The main component is a swing member 125 that is moved, a cylindrical piston 127 as a driving body that reciprocates in the front-rear direction of the hammer drill 100 in accordance with the swing operation of the swing member 125, and a cylinder 129 that houses the piston 127. It is configured. The motor shaft 111 is disposed to be inclined with respect to the intermediate shaft 121. The cylinder 129 is integrally formed with the tool holder 159 as a rear region of the tool holder 159.

The striking element 140 is disposed above the motion conversion mechanism 120 and behind the tool holder 159, and is linear in the longitudinal direction of the hammer drill 100 converted from the rotational output of the electric motor 110 by the motion conversion mechanism 120. Is transmitted to the hammer bit 119 as a striking force. That is, the striking element 140 is mainly configured by a striker 143 as a striking element slidably disposed in the cylindrical piston 127 and an impact bolt 145 disposed in front of the striker 143 and colliding with the striker 143. ing. The space of the piston 127 behind the striker 143 forms an air chamber 127a that transmits the sliding motion of the piston 127 to the striker 143 via air pressure fluctuation.

The power transmission mechanism 150 is disposed on the front side of the motion conversion mechanism 120 and is a mechanism for transmitting the rotation output of the electric motor 110 transmitted from the intermediate shaft 121 of the motion conversion mechanism 120 to the tool holder 159. That is, the power transmission mechanism 150 is engaged with and engaged with the first gear 151 rotating with the intermediate shaft 121 and the first gear 151, and a plurality of second gears 153 attached to the tool holder 159 (cylinder 129). It is mainly composed of a gear reduction mechanism composed of these gears.

The handgrip 109 is mainly composed of a grip portion 109A extending in the vertical direction intersecting the long axis direction of the hammer bit 119 (extending direction of the hitting shaft). The above vertical direction is an implementation configuration example corresponding to the “handle extending direction” in the present invention. The grip portion 109 </ b> A is disposed at a predetermined interval in the major axis direction of the hammer bit 119 with respect to the upper portion of the motor housing 103. The upper portion of the grip portion 109A is connected to an upper connecting portion 103a extending substantially horizontally from the rear end upper portion of the motor housing 103 to the rear, and the lower portion of the grip portion 109A is substantially the middle in the vertical direction of the motor housing 103. It is connected with the lower connection part 103b extended in the substantially horizontal shape from back to back. In the first embodiment, as shown in FIG. 1, the upper connecting portion 103a and the lower connecting portion 103b are integrally extended from the motor housing 103, but are integrally extended from the grip portion 109A. Also good.

The lower connecting portion 103b of the motor housing 103 extends rearward from a substantially central portion in the vertical direction of the motor housing 103, and a mounting portion 160 for mounting the battery pack on the lower surface thereof is a length of the hammer bit 119. They are arranged side by side in the axial direction. The mounting portion 160 is composed of two battery mounting portions 160A and 160B. These two battery mounting portions 160A and 160B are fixed to the lower connecting portion 103b so that they cannot be removed from the hammer drill 100. Battery packs 170A and 170B for supplying a driving current to the electric motor 110 are detachably mounted on the two battery mounting portions 160A and 160B, respectively. The two battery mounting portions 160A and 160B correspond to the “plurality of battery mounting portions” in the present invention, and the battery packs 170A and 170B correspond to “batteries” in the present invention. 1 to 4, the battery packs 170A and 170B are indicated by two-dot chain lines.

In addition, a space is formed inside the lower connecting portion 103b, and a controller 130 for controlling the electric motor is disposed in this space. That is, the controller 130 is disposed between the battery packs 170A and 170B and the hand grip 109 as shown in FIG. In other words, the controller 130 is disposed so as to extend horizontally above the battery packs 170A and 170B. The controller 130 may be disposed between the battery packs 170A and 170B and the electric motor 110 behind the electric motor 110, as indicated by a two-dot chain line in FIG.

6 to 9 show details of the battery packs 170A and 170B (FIGS. 6 to 9 show one battery pack). The battery packs 170 </ b> A and 170 </ b> B are generally configured mainly by a substantially rectangular parallelepiped battery case 171 and a plurality of battery cells (not shown) accommodated in the battery case 171. The battery packs 170A and 170B are slid horizontally in the left-right direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 along the lower surfaces of the battery mounting portions 160A and 160B. By this, it is detachably mounted on the battery mounting portions 160A and 160B. The two battery packs 170A and 170B have the same configuration (shape) and can be mounted on either of the two battery mounting portions 160A and 160B.

In order to slide the battery packs 170A and 170B relative to the battery mounting portions 160A and 160B, a pair of linearly extending along the longitudinal direction of the battery packs 170A and 170B is formed on both side surfaces on the upper surface side of the battery case 171. A mounting guide 173 is provided. In addition, a hook 175 for locking and a push button 177 for unlocking are provided at the center on the upper surface side of the battery case 171. The locking hook 175 is provided on the rear side in the mounting direction (sliding direction when mounting) of the battery packs 170A and 170B, and is biased by a spring (not shown) so as to protrude from the upper surface of the battery case 171. . The push button 177 for unlocking is disposed on the rear side in the mounting direction of the battery case 171 (sliding direction when mounting). The push button 177 is mechanically coupled to the hook 175 so that when the operator pushes the push button 177, the hook 175 moves in the retracting direction from the upper surface of the battery case 171. Yes.

On the other hand, as shown in FIG. 1 and FIG. 2, the major axis direction of the hammer bit 119 for mounting the battery packs 170A and 170B from the side of the hammer drill 100 to each of the two battery mounting portions 160A and 160B ( A pair of front and rear guide rails 161 extending linearly in the left-right direction intersecting the striking axis) are formed. The guide rail 161 is integrally formed with the lower connecting portion 103b. The guide rail 161 is formed in a substantially U-shaped cross section, and one end in the extending direction of the guide rail 161 is opened as an insertion port for the mounting guide 173. The mounting guides 173 of the battery packs 170A and 170B are inserted by sliding in the direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109. That is, the guide rail 161 functions as a guide means when the battery packs 170A and 170B are attached to the battery mounting portions 160A and 160B, and the guide rail 161 is dropped to prevent the battery packs 170A and 170B from dropping from the battery mounting portions 160A and 160B. It has a function as a prevention means. This guide rail 161 is an implementation configuration example corresponding to the “battery engaging portion” in the present invention.

Further, as shown in FIG. 4, each of the battery mounting portions 160A and 160B includes a concave locking portion 163 to which the hooks 175 of the battery packs 170A and 170B can be locked. The locking portion 163 is provided integrally with the lower connecting portion 103b so as to be positioned on the battery pack insertion port side between the front and rear guide rails 161. Therefore, when the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B, the locking portion 163 and the hook 175 are engaged. Thereby, the battery packs 170A and 170B are fixed to the battery mounting portions 160A and 160B, and the movement in the direction of removal (the direction opposite to the sliding direction at the time of mounting), that is, the dropout of the battery packs 170A and 170B is regulated. . When the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B, the hook 175 is moved downward by the taper portion of the hook 175 being pushed by the locking portion 163, and then returns to the initial position. Thus, the engaging portion 163 is engaged.

The battery packs 170A and 170B attached to the battery attachment portions 160A and 160B are held in a state where the outer surfaces thereof are exposed except for the upper surface which is the attachment surface for the battery attachment portions 160A and 160B. Further, the lower surfaces of the battery packs 170A and 170B are set to be flush with the lower surface of the motor housing 103. As a result, the hammer drill 100 is stably placed on the ground or floor surface with the lower surfaces of the battery packs 170A and 170B and the motor housing 103 as placement surfaces.

As described above, the battery packs 170A and 170B are located behind the electric motor 110 and below the handgrip 109 so that the longitudinal direction of the battery packs 170A and 170B extends in the long axis direction of the hammer bit 119 and the handgrip extension. It is arranged in parallel to the intersecting direction that intersects both directions. Further, the two battery packs 170A and 170B are arranged side by side in the front-rear direction (the long axis direction of the hammer bit 119). That is, the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B so that the length of the hammer bit 119 in the major axis direction is shorter than the length in the direction intersecting the major axis direction.

Furthermore, in the first embodiment, the two battery mounting portions 160A and 160B are configured to move (slide) from the left side to the right side of the hammer drill 100 when viewed from the rear (the direction of the arrow F shown in FIGS. 3 and 4). ) Is defined as the mounting direction, while movement in the reverse direction is defined as the removal direction. That is, in the first embodiment, the two attachment / detachment directions of the battery packs 170A and 170B are set to be the same direction. As a modification, the attachment / detachment direction may be such that one battery pack 170A and the other battery pack 170B are different from each other. That is, one battery pack 170A may be mounted from the right side of the hammer drill 100, and the other battery pack 170B may be mounted from the left side of the hammer drill 100.

Moreover, each battery mounting part 160A, 160B is provided with the terminal 165 (refer FIG. 5). The terminal 165 is fixed to the lower surface of the lower connecting portion 103b between the pair of front and rear guide rails 161 in the battery mounting portions 160A and 160B. When the battery packs 170A and 170B are attached to the battery attachment portions 160A and 160B, the respective terminals 165 are electrically connected to the terminals 179 (see FIGS. 6 and 7) of the battery packs 170A and 170B. As a result, current can be supplied from the battery packs 170A and 170B to the electric motor 110 and the controller 130.

Further, as shown in FIG. 3, four cylindrical rubber pins 167 are arranged on the lower surface of each battery mounting portion 160A, 160B so as to be positioned at each corner of the virtual rectangle. These four rubber pins 167 protrude downward with a predetermined length, and are elastically attached downward to the four upper surfaces of the battery packs 170A and 170B attached to the battery attachment portions 160A and 160B. To force. Thereby, rattling due to vibration of the battery packs 170A and 170B is restricted. The rubber pin 167 may be formed in a shape other than the cylindrical shape, or various spring members such as a leaf spring may be used from the rubber pin 167.

As described above, according to the first embodiment, the battery connecting portions 160A and 160B are provided in the front and rear two portions of the lower connecting portion 103b of the motor housing 103, and the battery packs 170A and 170B are provided in the respective battery mounting portions 160A and 160B. Is mounted for removal. For this reason, if the hammer drill 100 is, for example, 36V specification, two 18V battery packs 170A, 170B are mounted and electrically connected in series. The 18V battery pack is considerably lighter in weight than the 36V battery pack. Therefore, the operator can easily replace battery packs 170A and 170B, that is, easily attach / detach battery packs 170A and 170B to / from battery mounting portions 160A and 160B. As a result, the workability of the attaching / detaching work of the battery packs 170A and 170B is improved. If the hammer drill 100 is of 18V specification, the two battery packs 170A and 170B are electrically connected in parallel. In this case, the hammer drill 100 can be driven for a long time. Further, when the hammer drill 100 can be driven by either 36V or 18V, the connection mode of the two 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 addition, according to the first embodiment, the two battery mounting portions 160A and 160B are fixed to the lower connecting portion 103b of the motor housing 103, and the battery packs 170A and 160B are connected to the battery mounting portions 160A and 160B. 170B is attached. That is, the two battery packs 170A and 170B are directly attached to the battery attachment portions 160A and 160B without using an adapter. For this reason, when a plurality of battery packs are mounted, an adapter becomes unnecessary and the weight of the hammer drill 100 is reduced compared to a configuration in which a plurality of battery packs are mounted indirectly on one battery mounting portion via an adapter. Achieved.

In general, the battery packs 170A and 170B are formed as a substantially rectangular parallelepiped. According to the first embodiment, 18V battery packs 170A and 170B are placed in the lower connecting portion 103b of the motor housing 103 in the front-rear direction so that the longitudinal direction thereof intersects the major axis direction of the hammer bit 119. Two are arranged side by side. That is, in the state where the battery mounting portions 160A and 160B are mounted, the battery packs 170A and 170B are arranged such that the length of the hammer bit 119 in the major axis direction is shorter than the length in the direction intersecting the major axis direction. Is done. Thereby, compared with the case where a longitudinal direction is arrange | positioned in parallel with the major axis direction of the hammer bit 119, the length of the arrangement space of battery pack 170A, 170B regarding the major axis direction of the hammer bit 119 can be shortened. Therefore, a compact shape in which the longitudinal length of the hammer drill 100 is shortened is configured.

Further, according to the first embodiment, the battery packs 170A and 170B are inserted and attached to the battery attachment portions 160A and 160B from the side of the hammer drill 100. For this reason, the battery packs 170A and 170B have a direction that intersects the hammering axis of the hammer bit 119, that is, a direction that intersects the vibration direction generated by the hammering operation of the hammer bit 119, as the battery pack 170A and 170B removal direction. Therefore, the removal direction of the battery packs 170A and 170B and the vibration direction of the hammer drill 100 do not match, and the possibility that the battery packs 170A and 170B fall off due to the vibration of the hammer drill 100 is reduced.

In addition, according to the first embodiment, the battery packs 170A, 160B are slid along the guide rails 161 of the battery mounting portions 160A, 160B, thereby allowing the battery mounting portions 160A, 160B to move to the battery packs 170A, 160B. 170B is attached. Therefore, battery packs 170A and 170B are easily attached.

Further, according to the first embodiment, the two battery mounting portions 160A and 160B are provided side by side. Therefore, the routing of the electrical wiring connected to the respective terminals 165 of the battery mounting portions 160A and 160B that are electrically connected to the battery packs 170A and 170B is simplified.

Further, according to the first embodiment, the battery packs 170 </ b> A and 170 </ b> B are arranged to be located behind the motor housing 103 and below the handgrip 109. In the hammer drill 100 according to the first embodiment, due to the structural characteristics that the region of the motor housing 103 that accommodates the electric motor 110 extends downward, the handgrip 109 below the downward extending region is below the handgrip 109. , Free space arises. Therefore, since battery packs 170A and 170B are arranged using the empty space, battery packs 170A and 170B are rationally arranged. Further, the positions of the battery packs 170A and 170B are positions away from the processing position by the hammer bit 119, and the battery packs 170A and 170B do not hinder the processing operation.

Further, according to the first embodiment, the battery packs 170A and 170B are arranged behind the motor housing 103 and below the handgrip 109, and the lower surfaces of the battery packs 170A and 170B and the lower surface of the motor housing 103 are flush with each other. Set to For this reason, when the hammer drill 100 is placed on the ground or floor, the hammer drill 100 is stably placed. In the first embodiment, the hammering shaft of the hammer bit 119 and the rotating shaft of the electric motor 110 intersect with each other in an inclined manner, but the present invention is not limited to this. For example, the hammer bit 119 may be disposed so that the striking shaft of the hammer bit 119 and the rotation shaft of the electric motor 110 are orthogonal to each other.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. 10 and 11. In the second embodiment, in the hammer drill 100 of the first embodiment, the two battery mounting portions 160A and 160B are provided on the lower surface of the lower connecting portion 103b connecting the motor housing 103 and the hand grip 109 with respect to the longitudinal direction of the hammer bit 119. The handgrips 109 are provided side by side in the intersecting direction intersecting both directions with the extending direction of the handgrip 109. The battery packs 170A and 170B are moved (slid) in a direction parallel to the long axis direction of the hammer bit 119 with respect to the two battery mounting portions 160A and 160B, so that the battery packs 170A and 170B are moved to the battery mounting portion. It is attached to and detached from 160A and 160B.

That is, when the battery packs 170A and 170B are moved from the rear to the front of the hammer drill 100, the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B and moved in the opposite direction (from the front to the rear of the hammer drill 100). Thus, the battery packs 170A and 170B are removed from the battery mounting portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment. According to the second embodiment, the same effect as the first embodiment can be obtained.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. In the third embodiment, in the hammer drill 100 of the first embodiment, battery mounting portions 160A and 160B are provided on the side surface of the vertical wall portion 103c extending downward. The vertical wall portion 103c is formed integrally with the lower connecting portion 103b at the center of the lower surface of the lower connecting portion 103b. Battery mounting portions 160A and 160B are provided on the left side surface and the right side surface of the vertical wall portion 103c, respectively. That is, the two battery mounting portions 160A and 160B are provided to be spaced apart at two places on the left and right via the vertical wall portion 103c. The left and right side surfaces of the vertical wall portion 103c are an implementation configuration example corresponding to “two places separated by the tool main body and / or the handle” in the present invention. Then, the battery packs 170A and 170B move (slide) in the front-rear direction (long axis direction of the hammer bit 119) with respect to the battery mounting portions 160A and 160B, so that the battery packs 170A and 170B are moved to the battery mounting portions 160A and 160B. It is attached to and detached from. The configuration other than the above has the same configuration as that of the first embodiment.

According to the third embodiment, when the hammer drill 100 is placed on the ground or the like, the vertical wall portion 103c is used as a stand (pedestal). In this case, it is preferable that the lower surface of the battery packs 170A and 170B attached to the lower surface of the vertical wall portion 103c is set to be substantially flush with the lower surface. Thereby, when placing the hammer drill 100 on the ground or floor, the hammer drill 100 is stably placed. Furthermore, according to the third embodiment, the same effect as the first embodiment can be obtained.

In the third embodiment, as shown in FIG. 14, battery packs 170A and 170B having a smaller capacity than the battery packs 170A and 170B shown in FIG. 13 may be used. For example, in the case of an 18V battery pack, the normal (large capacity) battery pack shown in FIG. 13 is 3 Ah (ampere hour), whereas a small-sized small capacity battery pack is 1. 3 Ah. As shown in FIG. 14, the miniaturized lightweight battery packs 170A and 170B are miniaturized by reducing the thickness compared to the battery packs 170A and 170B shown in FIG. Therefore, the horizontal width and vertical width other than the thickness are formed in a rectangular parallelepiped shape having the same dimensions. Therefore, even when the small battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B provided on the left side surface and the right side surface of the vertical wall portion 103c, they are mounted on the battery mounting portions 160A and 160B. The lower surfaces of the battery packs 170A and 170B are flush with the lower surface of the vertical wall portion 103c. Thereby, when placing the hammer drill 100 on the ground or floor, the hammer drill 100 is stably placed.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIG. As shown in FIG. 15, in the fourth embodiment, the rotating shaft of the electric motor 110 and the hammering shaft of the hammer bit 119 are arranged in parallel, and the grip portion 109A of the handgrip 109 is arranged on the hammering axis. . The hammer drill 100 according to the fourth embodiment is referred to as a hammer drill of the second form 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 extends from the upper rear end portion of the motor housing 103 toward the lower side intersecting the long axis direction of the hammer bit 119. The support portion 107 connects the front end portion in the extending direction of the grip portion 109 </ b> A and the rear end lower portion of the motor housing 103. The support portion 107 extends to be inclined with respect to the vertical direction and is provided to reinforce the grip portion 109A. The rotation of the electric motor 110 is converted into a linear motion by the motion conversion mechanism 120 and then transmitted as a striking force to the hammer bit 119 held by the tool holder 159 via the striking element 140. The rotation of the electric motor 110 is transmitted to the hammer bit 119 held by the tool holder 159 as a rotational motion via the power transmission mechanism 150.

In the fourth embodiment, in the hammer drill 100 of the second embodiment, the two battery mounting portions 160A and 160B are arranged in the longitudinal direction of the hammer bit 119 on the front end portion of the grip portion 109A and the lower surface of the support member 107. Is provided. Then, the battery pack 170A is moved toward the rear of the hammer drill 100, so that the battery pack 170A is attached to the battery attachment portion 160A. In other words, the battery pack 170A is attached to the battery attachment portion 160A by moving in a direction approaching the battery attachment portion 160B on the rear side. On the other hand, when the battery pack 170B is moved toward the front of the hammer drill 100, the battery pack 170B is attached to the battery attachment portion 160B. In other words, the battery pack 170B is attached to the battery attachment portion 160B by moving in a direction approaching the front battery attachment portion 160A. Battery packs 170A and 170B are removed from battery mounting portions 160A and 160B by moving in the direction opposite to the mounting direction. The configuration other than the above has the same configuration as that of the first embodiment.

According to the fourth embodiment, the two battery mounting portions 160A and 160B are configured such that the battery packs 170A and 170B mounted on the respective mounting portions are arranged to face each other with respect to the major axis direction of the hammer bit 119. Has been. Since the longitudinal directions of the two battery packs 170A and 170B are arranged in parallel to the long axis direction of the hammer bit 119, the battery packs 170A and 170B are prevented from protruding to the side of the main body 101. Furthermore, according to the third embodiment, substantially the same effect as the first embodiment can be obtained.

(Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIGS. 16 and 17. As shown in FIGS. 16 and 17, in the fifth embodiment, the grip portion 109 </ b> A of the hand grip 109 extends downward from the rear end portion of the motor housing 103 so as to intersect the long axis direction of the hammer bit 119. To do. For the sake of convenience, the hammer drill 100 according to the fifth embodiment is referred to as a hammer drill of the third embodiment.

In the fifth embodiment, in the hammer drill 100 of the third embodiment, battery mounting portions 160A and 160B are provided on the left side surface and the right side surface of the motor housing 103 at the rear end portion of the motor housing 103 in the longitudinal direction of the hammer bit 119. Is provided. That is, the two battery mounting portions 160A and 160B are provided at two left and right positions with the motor housing 103 interposed therebetween. The left side surface and the right side surface of the motor housing 103 are an implementation configuration example corresponding to “two places spaced apart by a tool body” in the present invention. The battery packs 170A and 170B are moved (slid) from the rear side to the front side of the hammer drill 100 to be mounted on the battery mounting portions 160A and 160B, and the battery packs 170A and 170B are moved from the front side to the rear side of the hammer drill 100. Is moved (slided) to be detached from the battery mounting portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the fifth embodiment, the battery packs 170A and 170B are arranged with the hammer shaft of the hammer bit 119 interposed therebetween. Therefore, the gravity center position of the hammer drill 100 is disposed close to the striking axis with respect to the vertical direction intersecting the major axis direction of the hammer bit 119. As a result, the moment around the center of gravity of the hammer drill 100 when the hammer bit 119 is struck is reduced. Furthermore, according to the fifth embodiment, substantially the same effect as the first embodiment can be obtained.

(Sixth embodiment)
Next, a sixth embodiment will be described with reference to FIG. As shown in FIG. 18, in the sixth embodiment, in the hammer drill 100 of the third embodiment, the front end portion of the handgrip 109 and the front end side lower portion of the motor housing 103 extend in an inclined manner with respect to the vertical direction. The support members 107 for reinforcing the handgrip are connected. For the sake of convenience, the hammer drill 100 according to the sixth embodiment is referred to as a hammer drill of the fourth embodiment. That is, in the hammer drill of the fourth form, the hand grip 109 has the grip portion 109 </ b> A and the support member 107. This support member 107 is an implementation configuration example corresponding to the “reinforcing member” in the present invention.

In the sixth embodiment, in the hammer drill 100 of the fourth embodiment described above, one battery mounting portion 160A is provided at the lower end portion of the grip portion 109A that is the tip portion of the handgrip 109, and the other end is provided on the front surface portion of the support member 107. A battery mounting portion 160B is provided. That is, the two battery mounting portions 160A and 160B are provided apart from each other in the front-rear direction with the hand grip 109 interposed therebetween. Then, one battery pack 170A is moved from the rear side of the hammer drill 100 to the front side and attached to the one battery mounting portion 160A. Further, the other battery pack 170B is attached to the other battery attachment portion 160B by moving from below the hammer drill 100 upward. The configuration other than the above has the same configuration as that of the first embodiment.

According to the sixth embodiment, the two battery packs 170A and 170B are rationally arranged at two positions separated from each other using the grip portion 109A of the hand grip 109 and the support member 107. Furthermore, according to the sixth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIG. In the seventh embodiment, in the hammer drill 100 according to the second embodiment, two battery mounting portions 160A and 160B are arranged in the major axis direction (front-rear direction) of the hammer bit 119 on the front end portion of the grip portion 109A and the lower surface of the support member 107. Is provided. Then, the battery packs 170A and 170B are moved (slid) in the direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 with respect to the two battery mounting portions 160A and 160B. Thus, the battery packs 170A and 170B are attached to the battery attachment portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the seventh embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the front end portion of the grip portion 109A and the lower surface of the support member 107. Furthermore, according to the seventh embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Eighth embodiment)
Next, an eighth embodiment will be described with reference to FIG. In the eighth embodiment, in the hammer drill 100 according to the second embodiment, the two battery mounting portions 160A and 160B have the length of the hammer bit 119 straddling both the motor housing 103 and the lower surface of the gear housing 105 formed on the same plane. They are provided side by side in the axial direction (front-rear direction). Then, the battery packs 171A and 170B are moved (slid) in a direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 with respect to the two battery mounting portions 160A and 160B. Thus, the battery packs 170A and 170B are attached to the battery attachment portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the eighth embodiment, in the hammer drill 100 of the second embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the motor housing 103 and the gear housing 105. Furthermore, according to the eighth embodiment, substantially the same effect as the first embodiment can be obtained.

(Ninth embodiment)
Next, a ninth embodiment will be described with reference to FIG. In the ninth embodiment, in the hammer drill 100 of the third embodiment, two battery mounting portions 160A and 160B are provided side by side in the major axis direction (front-rear direction) of the hammer bit 119 on the lower surface of the distal end portion of the handgrip 109. Yes. Then, the battery packs 170A and 170B are moved (slid) in the direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 with respect to the two battery mounting portions 160A and 160B. Thus, the battery packs 170A and 170B are attached to the battery attachment portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the ninth embodiment, in the hammer drill 100 of the third embodiment, the two battery mounting portions 160A and 160B are rationally arranged by using the lower surface of the distal end portion of the hand grip 109. Furthermore, according to the eighth embodiment, substantially the same effect as the first embodiment can be obtained.

(10th Embodiment)
Next, a tenth embodiment will be described with reference to FIG. In the tenth embodiment, in the hammer drill 100 of the fourth embodiment, two battery mounting portions 160A and 160B are vertically mounted on the front surface of the support member 107 that connects the lower end portion of the grip portion 109A and the motor housing 103 in the handgrip 109. It is provided side by side in the direction. Then, the battery packs 170A and 170B are moved (slid) in the direction intersecting both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 with respect to the two battery mounting portions 160A and 160B. Thus, the battery packs 170A and 170B are attached to the battery attachment portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the tenth embodiment, in the hammer drill 100 of the fourth embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the front surface of the support member 107. Furthermore, according to the tenth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Eleventh embodiment)
Next, an eleventh embodiment will be described with reference to FIG. In the eleventh embodiment, in the hammer drill 100 according to the first embodiment, the lower surface of the lower connecting portion 103b that connects the motor housing 103 and the hand grip 109 is formed in a flat shape without a step. Two battery mounting portions 160A and 160B are provided side by side in the major axis direction (front-rear direction) of the hammer bit 119 on the lower surface of the lower connecting portion 103b. Then, the battery pack 170A is mounted on one battery mounting portion 160A by moving (sliding) the battery pack 170A in a direction approaching the other battery mounting portion 160B. On the other hand, the battery pack 170B is mounted on the other battery mounting portion 160B by moving (sliding) the battery pack 170B in a direction approaching the one battery mounting portion 160A. The configuration other than the above has the same configuration as that of the first embodiment.

According to the eleventh embodiment, in the hammer drill 100 of the first embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the lower surfaces of the motor housing 103 and the hand grip 109. Furthermore, according to the eleventh embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Twelfth embodiment)
Next, a twelfth embodiment will be described with reference to FIG. In the twelfth embodiment, in the hammer drill 100 of the third embodiment, two battery mounting portions 160A and 160B are provided side by side in the major axis direction (front-rear direction) of the hammer bit 119 on the lower surface of the distal end portion of the handgrip 109. Yes. Then, the battery pack 170A is mounted on one battery mounting portion 160A by moving (sliding) the battery pack 170A in a direction approaching the other battery mounting portion 160B. On the other hand, the battery pack 170B is mounted on the other battery mounting portion 160B by moving (sliding) the battery pack 170B in a direction approaching the one battery mounting portion 160A. The configuration other than the above has the same configuration as that of the first embodiment.

According to the twelfth embodiment, in the hammer drill 100 of the third embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the lower surface of the tip portion of the handgrip 109. Furthermore, according to the twelfth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(13th Embodiment)
Next, a thirteenth embodiment will be described with reference to FIG. In the thirteenth embodiment, in the hammer drill 100 of the fourth embodiment, a single plane is formed by the lower surface of the grip portion 109A of the handgrip 109, the lower end portion of the grip portion 109A, and the lower surface of the support member 107 connecting the motor housing 103. Has been. Then, two battery mounting portions 160A and 160B are provided on the plane side by side in the major axis direction (front-rear direction) of the hammer bit 119. Then, the battery pack 170A is mounted on one battery mounting portion 160A by moving (sliding) the battery pack 170A in a direction approaching the other battery mounting portion 160B. On the other hand, the battery pack 170B is mounted on the other battery mounting portion 160B by moving (sliding) the battery pack 170B in a direction approaching the one battery mounting portion 160A. The configuration other than the above has the same configuration as that of the first embodiment.

According to the thirteenth embodiment, in the hammer drill 100 of the fourth embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the lower surface of the grip portion 109A and the lower surface of the support member 107. Furthermore, according to the thirteenth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(14th Embodiment)
Next, a fourteenth embodiment will be described with reference to FIG. In the fourteenth embodiment, in the hammer drill 100 according to the first embodiment, one battery mounting portion 160A is provided on the lower surface of the lower connecting portion 103b that connects the motor housing 103 and the hand grip 109. On the other hand, the other battery mounting portion 160 </ b> B is provided on the front surface portion of the lower portion of the motor housing 103. That is, the two battery mounting portions 160A and 160B are provided apart from each other with the motor housing 103 interposed therebetween. The lower surface of the rear part of the motor housing 103 and the front part of the lower part are an implementation configuration example corresponding to “two places separated by the tool body” in the present invention. The battery pack 170A is mounted on one battery mounting portion 160A by moving (sliding) in parallel with the long axis direction of the hammer bit 119. On the other hand, the battery pack 170B is moved (slided) in the vertical direction of the hammer drill 100 and attached to the other battery attachment portion 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the fourteenth embodiment, in the hammer drill 100 of the first embodiment, the two battery mounting portions 160A and 160B are rationally arranged using the lower surface of the lower connecting portion 103b and the lower front surface portion of the motor housing 103. . Furthermore, according to the fourteenth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Fifteenth embodiment)
Next, a fifteenth embodiment will be described with reference to FIG. In the fifteenth embodiment, in the hammer drill 100 of the second embodiment, one battery mounting portion 160A is provided on the tip of the grip portion 109A and the lower surface of the support member 107, and the other battery mounting portion 160B is provided on the lower surface of the motor housing 103. Is provided. That is, the two battery mounting portions 160A and 160B are provided apart in the front-rear direction with the motor housing 103 and the hand grip 109 interposed therebetween. The battery packs 170A and 170B are moved (slid) in parallel with the long axis direction of the hammer bit 119 with respect to the two battery mounting portions 160A and 160B, so that the battery packs 170A and 170B are moved to the battery mounting portion 160A, Each is attached to 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the fifteenth embodiment, in the hammer drill 100 of the second embodiment, the two battery mounting portions 160A and 160B are rational using the tip of the grip portion 109A, the lower surface of the support member 107, and a part of the motor housing 103. Placed in. Furthermore, according to the fifteenth embodiment, substantially the same effects as those of the first embodiment can be obtained.

(Sixteenth embodiment)
Next, a sixteenth embodiment will be described with reference to FIGS. In the sixteenth embodiment, in the hammer drill 100 of the second embodiment, battery mounting portions 160A and 160B are provided on the left side surface and the right side surface of the motor housing 103 and the gear housing 105 across the motor housing 103 and the gear housing 105. ing. That is, the two battery mounting portions 160A and 160B are provided at two positions on the left side surface and the right side surface with the motor housing 103 and the gear housing 105 interposed therebetween. The left side surface and the right side surface of the motor housing 103 and the gear housing 105 are an implementation configuration example corresponding to “two places separated by the tool main body” in the present invention. The battery packs 170A and 170B are moved (slid) from the rear side to the front side of the hammer drill 100, so that the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B, and moved (slid) from the front side to the rear side of the hammer drill 100. ) Is removed from the battery mounting portions 160A and 160B. The configuration other than the above has the same configuration as that of the first embodiment.

According to the sixteenth embodiment, the battery packs 170A and 170B are arranged with the hammer shaft of the hammer bit 119 interposed therebetween. Therefore, the gravity center position of the hammer drill 100 is disposed close to the striking axis with respect to the vertical direction intersecting the major axis direction of the hammer bit 119. As a result, the moment around the center of gravity of the hammer drill 100 when the hammer bit 119 is struck is reduced. Furthermore, according to the fifth embodiment, substantially the same effect as the first embodiment can be obtained.

(17th Embodiment)
Next, a seventeenth embodiment will be described with reference to FIG. In the seventeenth embodiment, in the hammer drill 100 of the third embodiment, one battery mounting portion 160A is provided at the front end portion of the handgrip 109, and the other battery mounting portion 160B is formed on the lower surfaces of both the motor housing 103 and the gear housing 105. It is provided across. The lower surface of the motor housing 103 and the lower surface of the gear housing 105 are set to be flush with each other. As a result, the two battery mounting portions 160A and 160B are spaced apart with the motor housing 103 and the hand grip 109 interposed therebetween. Then, the battery packs 170A and 170B are mounted on the two battery mounting portions 160A and 160B by moving (sliding) from the front to the rear of the hammer drill 100 in parallel with the long axis direction of the hammer bit 119.

(Eighteenth embodiment)
Next, an eighteenth embodiment will be described with reference to FIG. In the eighteenth embodiment, the battery packs 170A and 170B mounted on the lower surface of the lower connecting portion 103b side by side in the front-rear direction are covered with a rotatable cover member 180. The cover member 180 is formed of an elastomer, and is formed of a substantially rectangular parallelepiped box-shaped member having an open upper surface and a front surface. A front end lower portion of the cover member 180 is attached to the motor housing 103 so as to be rotatable via a support shaft 181. Therefore, as shown by the solid line in FIG. 31, the cover member 180 rotates upward to cover the entire battery packs 170A and 170B. On the other hand, as shown by a two-dot chain line in FIG. 31, the battery packs 170A and 170B are opened when the cover member 180 rotates downward. Thereby, removal of battery pack 170A, 170B is permitted. Note that the cover member 180 has an engagement recess 183, and when the cover member 180 is rotated upward, the engagement recess 183 is provided at the rear end of the lower connecting portion 103b. Engage with part 185. As a result, the cover member 180 is held in the closed position.

According to the eighteenth embodiment, the battery packs 170A and 170B mounted on the lower surface of the lower connecting portion 103b are covered with the cover member 180. Thereby, the dust-proof effect and waterproof effect with respect to battery pack 170A, 170B are acquired. Further, the cover member 180 prevents the battery packs 170A and 170B from being accidentally dropped off. Furthermore, the cover member 180 protects from external forces on the battery packs 170A and 170B.

In the eighteenth embodiment, the cover member 180 is provided in the motor housing 103 so as not to be removable, but is not limited thereto. For example, the cover member 180 may be configured to be detachably mounted from the hammer drill 100. In this case, the plurality of battery packs may be integrated by attaching a cover member to the plurality of battery packs. That is, a plurality of battery packs are arranged inside the cover member, and constitute an assembly of the plurality of battery packs and the cover member. In this assembly body, the terminals and the mounting guides of the plurality of battery packs are exposed from the cover member in order to be mounted on the battery mounting portion. When the assembly body is mounted on the battery mounting portion, the cover member comes into contact with the battery mounting portion. Thereby, the battery pack is sealed by the cover member.

As described above, according to the configuration of the assembly body, the cover member is attached and detached as necessary. In addition, a plurality of battery packs are mounted on the battery mounting portion by a single mounting operation. Further, the plurality of battery packs removed from the hammer drill are held integrally. Therefore, loss of the battery pack is prevented.

The cover member 180 may be applied to a hammer that is an impact tool other than the hammer drill 100. Moreover, you may apply to power tools which can mount | wear with several battery packs, such as not only an impact tool but an electric driver, an electric wrench, an electric grinder, an electric reciprocating saw, an electric jigsaw.

As for the arrangement position of the two battery mounting portions 160A and 160B and the direction of movement when the battery packs 170A and 170B are mounted, the modes described in the first to seventeenth embodiments are used in appropriate combination. Can do.

Further, in the above embodiment, the guide rail 161 and the locking portion 163 constituting the battery mounting portions 160A and 160B are formed integrally with the motor housing 103, but this is not restrictive. The battery mounting portions 160A and 160B may be formed separately from the motor housing 103, and the battery mounting portions 160A and 160B may be fixed to the motor housing 103 so as not to be removable. Moreover, in the above embodiment, although two battery mounting parts are formed, three or more battery mounting parts may be formed.

Moreover, although the above embodiment demonstrated using the hammer drill which performs a striking operation and rotation operation as an example of a striking tool, it is also possible to apply this invention to the hammer in which the hammer bit 119 performs only a striking operation. .

In view of the gist of the above invention, the impact tool according to the present invention can be configured in the following manner.
(Aspect)
The battery mounting portion has a battery engaging portion with which the battery can be engaged, and is configured to hold the battery by engaging the battery engaging portion,
The battery is mounted on the battery mounting portion by sliding the battery with respect to the battery engaging portion in a normal direction of a virtual plane including the striking shaft and the rotation shaft of the motor.

(Correspondence between each component of the embodiment and the component of the present invention)
The correspondence between each component of the present embodiment and each component of the present invention is shown below. 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 two battery mounting portions 160A and 160B are an example of a configuration corresponding to “a plurality of battery mounting portions” of the present invention.
The battery mounting portion 160A is an example of a configuration corresponding to the “battery mounting portion” of the present invention.
The battery mounting portion 160B is an example of a configuration corresponding to the “battery mounting portion” of the present invention.
The battery pack 170A is an example of a configuration corresponding to the “battery” of the present invention.
The battery pack 170B is an example of a configuration corresponding to the “battery” of the present invention.
The guide rail 161 is an example of a configuration corresponding to the “battery engaging portion” of the present invention.
The support member 107 is an example of a configuration corresponding to the “reinforcing member” of the present invention.

DESCRIPTION OF SYMBOLS 100 Hammer drill 101 Main body part 103 Motor housing 103a Upper connection part 103b Lower connection part 103c Vertical wall part 105 Gear housing 107 Support member 109 Hand grip 109A Grip part 109a Trigger 110 Electric motor 111 Motor shaft 119 Hammer bit 120 Motion conversion mechanism 121 Intermediate shaft 123 Rotating body 125 Oscillating member 127 Cylindrical piston 127a Air chamber 129 Cylinder 130 Controller 140 Strike element 143 Strike 145 Impact bolt 150 Power transmission mechanism 151 First gear 153 Second gear 159 Tool holder 160 Mounting portion 160A Battery mounting portion 160B Battery mounting portion 161 Guide rail 163 Locking portion 165 Terminal 167 Rubber pin 170A Battery pack 170B Battery pack 71 push button 179 Terminal 180 cover member 181 shaft 183 engaging recess 185 engaging projection of the hook 177 unlocking the battery case 173 mounted guide 175 lock

Claims (13)

1. An impact tool in which a tool bit linearly moves on an impact axis extending at least in a predetermined major axis direction,
   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;
   A plurality of the battery mounting portions are provided,
   The handle is provided so as to extend in a handle extending direction that intersects the major axis direction,
   The impact tool, wherein the battery mounting portion is fixed to the tool body so as not to be detached from the impact tool.
2. The impact tool according to claim 1,
   The battery mounting portion has a battery engaging portion with which the battery can be engaged, and is configured to hold the battery by engaging the battery engaging portion,
   The impact tool characterized in that the battery mounting portion is configured such that the battery is mounted by sliding the battery with respect to the battery engaging portion.
3. The impact tool according to claim 2,
   A plurality of said battery mounting parts are comprised so that each battery may be mounted | worn by moving in the same direction, The impact tool characterized by the above-mentioned.
4. The impact tool according to claim 2 or 3,
   The plurality of battery mounting portions are provided side by side in the major axis direction, and each battery is mounted by moving in a crossing direction intersecting both the major axis direction and the handle extending direction. The impact tool characterized by being comprised in this.
5. The impact tool according to claim 2 or 3,
   The plurality of battery mounting portions are provided side by side in an intersecting direction intersecting both the major axis direction and the handle extending direction, and each battery moves in a direction parallel to the major axis direction. A striking tool configured to be worn.
6. The impact tool according to claim 2,
   Two of the battery mounting portions among the plurality of battery mounting portions are provided side by side on a straight line extending in a predetermined direction,
   The battery is mounted on one of the two battery mounting portions by sliding the battery relative to the battery engaging portion in a direction approaching the other battery mounting portion. Configured to be
   The battery is mounted on the other battery mounting portion of the two battery mounting portions by sliding the battery relative to the battery engaging portion in a direction approaching the one battery mounting portion. A striking tool characterized in that it is configured to be made.
7. The impact tool according to any one of claims 2 to 6,
   As the battery slides with respect to the battery engaging portion in a crossing direction that intersects both the long axis direction and the handle extending direction, the battery is attached to the battery mounting portion. The impact tool characterized by being comprised in this.
8. The striking tool according to any one of claims 1 to 7,
   Of the plurality of battery mounting portions, two of the battery mounting portions are respectively provided at two positions separated by the tool main body and / or the handle.
9. The striking tool according to any one of claims 1 to 8,
   The said impact motor characterized by the said motor being provided so that the rotating shaft of the said motor and the said impact axis may become parallel.
10. The striking tool according to claim 9,
    The handle has a grip portion to be gripped by an operator,
    The hitting tool, wherein the grip portion is provided on the hitting axis.
11. The impact tool according to claim 9 or 10,
    The handle has a grip portion whose one end side is connected to the tool body, and a reinforcing member that further connects the other end side of the grip portion and the tool body,
    At least one battery mounting portion among the plurality of battery mounting portions is provided on the reinforcing member.
12. The striking tool according to any one of claims 1 to 7,
    The said impact motor characterized by the said motor being provided so that the rotating shaft of the said motor and the said impact axis may cross | intersect.
13. The striking tool according to any one of claims 8 to 12,
    Of the plurality of battery mounting portions, the two battery mounting portions are provided on both sides of the tool body in a crossing direction that intersects both the major axis direction and the handle extending direction. Blow tool.

Images