JP2014210298A - Hammering tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hammering tool whose installation technology of a battery is improved.SOLUTION: A hammering tool has a motor 110 for driving a tool bit 119, a tool body 101, a handle 109, and a battery installing portion 160A to which a battery 170A is detachably attached. The handle 109 extends in a handle extending direction intersecting a long axis direction. The battery installing portion 160A has a battery engaging portion 161 with which the battery 170A can be engaged. The battery 170A slides in an intersecting direction intersecting both of the long axis direction of the tool bit 119 and the extending direction of the handle 109 to be installed to the battery installing portion 160A.

Description

  The present invention relates to an impact tool in which a tool bit moves linearly at least in the long axis direction to perform a predetermined machining operation on a workpiece.

  Japanese Patent Laying-Open No. 2010-5751 discloses a battery type hammer drill using a battery as a drive source. The battery type hammer drill described in Japanese Patent Application Laid-Open No. 2010-5751 is provided with a battery mounting portion on a lower surface of a downwardly extending portion connecting the tool body and the handle, and the battery is moved forward from the rear of the hammer drill with respect to the battery mounting portion. It is set as the structure inserted and mounted toward.

JP 2010-5751 A

  A hammer drill is a striking tool that performs hammering work by striking the tool bit in the long axis direction. During hammering, the hammer drill is shocking and periodic in the long axis direction of the tool bit, that is, the longitudinal direction of the hammer drill. Vibration occurs. For this reason, as described in Japanese Patent Application Laid-Open No. 2010-5751, in the case where the battery is inserted and mounted from the rear of the hammer drill, the battery may come off due to the vibration described above.

  The present invention has been made in view of the above, and an object of the present invention is to provide an improved impact tool related to a battery mounting technique.

  In order to achieve the above object, according to a preferred form of the impact tool according to the present invention, an impact tool in which a tool bit linearly moves on an impact axis extending at least in the major axis direction is configured. The impact tool includes a motor for driving a tool bit, a tool main body that accommodates the motor, a handle that is connected to the tool main body, and a mounting portion on which a battery for supplying current to the motor is detachably mounted. Have. The handle is provided so as to extend in a handle extending direction that intersects the longitudinal direction. The mounting portion has a battery engaging portion with which the battery can be engaged, and is configured to hold the battery when the battery engages with the battery engaging portion. And it is comprised so that the said battery may be mounted | worn by a mounting part by a battery sliding with respect to a battery engaging part in the crossing direction which cross | intersects both the major axis direction and a handle extension direction. Yes.

  The striking tool is a tool that performs a predetermined machining operation by moving the tool bit linearly on a striking shaft extending at least in the long axis direction, and vibrations are generated in the long axis direction during the machining operation. According to the present invention, the battery is moved in the intersecting direction intersecting both the major axis direction and the handle extending direction to be mounted on the mounting portion, so that the battery removal direction (removal direction) is the vibration direction. And the possibility that the battery falls off the mounting portion due to the influence of vibration can be reduced.

According to the further form of the striking tool according to the present invention, the mounting portion has a center of gravity of the battery mounted on the mounting portion on a plane including the striking shaft and the handle central axis extending in the handle extending direction. Configured to be located.
According to this aspect, when the major axis direction is the front-rear direction, the weight balance of the battery in the left-right direction intersecting the front-rear direction can be achieved. Thereby, the operativity of an impact tool can be improved.

According to the further form of the impact tool which concerns on this invention, a mounting part is comprised by the several battery mounting part with which a some battery is each detachably mounted | worn, and a some battery mounting part is located in a line with a long axis direction. Is provided. Here, the plurality of batteries may be of the same type or different types. Further, the battery size and capacity may be the same or different. Furthermore, the motor may be driven using one of a plurality of batteries, or may be driven using a plurality of batteries.
According to this aspect, since the plurality of battery mounting portions are provided side by side in the long axis direction, a plurality of batteries can be arranged in a compact manner, and the electrical wiring related to the battery can be easily handled.

According to the further form of the impact tool which concerns on this invention, the partition is provided between the at least 2 battery mounting part of the some battery mounting part. When the handle extending direction is defined as the vertical direction, the lower end surface of the partition wall and the lower end surface of the tool body are configured to be flush with each other.
According to this embodiment, the partition wall can be used as a stand when the impact tool is placed on the ground or the like. Thereby, the impact tool can be placed in a stable state.

According to the further form of the impact tool according to the present invention, the mounting portion includes an even number of battery mounting portions to which an even number of batteries are detachably mounted, and half the batteries among the even number of battery mounting portions. The mounting portion is configured such that the battery slides in one direction with respect to the battery engaging portion so that the battery is mounted, and the remaining half of the even number of battery mounting portions is connected to the battery mounting portion. Is configured such that the battery is mounted by sliding the battery with respect to the battery engaging portion in a direction opposite to the one direction. In this embodiment, among the plurality of battery mounting parts provided in the impact tool, it is only necessary that an even number of battery mounting parts satisfy the above-described configuration with respect to battery mounting, and the battery mounting part is limited to an even number. Not what you want. That is, it goes without saying that even if an even number of battery mounting portions are provided as a whole, an odd number of battery mounting portions may be provided.
According to this aspect, in the state where the batteries are mounted on the even number of battery mounting portions, the combined center of gravity position of the even number of batteries has the striking axis of the tool bit and the central axis extending in the handle extending direction of the handle. It will be on the plane that contains it. As a result, when the major axis direction is the front-rear direction, a weight balance is inevitably achieved with respect to the left-right direction crossing the front-rear direction, and the position adjustment of the center of gravity becomes unnecessary.

According to the further form of the impact tool according to the present invention, the mounting portion includes an even number of battery mounting portions to which an even number of batteries are detachably mounted, and the battery mounting portions are adjacent to each other. The battery is mounted from the opposite direction to the mounting portion. In this embodiment, among the battery mounting parts provided in the impact tool, it is only necessary that an even number of battery mounting parts satisfy the above-described configuration with respect to battery mounting, and the battery mounting part is limited to an even number. is not. That is, it goes without saying that even if an even number of battery mounting portions are provided as a whole, an odd number of battery mounting portions may be provided.
According to this aspect, as described above, when the batteries are mounted on the even number of battery mounting portions, the combined center of gravity positions of the even number of batteries extend in the tool bit striking shaft and the handle extending direction of the handle. It lies on a plane that includes the central axis. As a result, when the major axis direction is the front-rear direction, a weight balance is inevitably achieved with respect to the left-right direction crossing the front-rear direction, and the position adjustment of the center of gravity becomes unnecessary.

According to the further form of the striking tool according to the present invention, the plurality of battery mounting portions include a handle center axis in which a combined center of gravity of the plurality of batteries mounted on the battery mounting portion extends in the striking shaft and the handle extending direction. It is comprised so that it may be located on the plane containing.
According to this aspect, in a configuration including a plurality of battery mounting portions, it is possible to balance the weight of the plurality of batteries with respect to the left-right direction intersecting the front-rear direction with the major axis direction as the front-rear direction. Thereby, the operativity of an impact tool can be improved.

According to the further form of the impact tool which concerns on this invention, the motor is provided so that the rotating shaft of the said motor may cross | intersect an impact axis.
According to this aspect, a striking tool of a type in which the rotating shaft of the motor intersects the striking shaft is configured.

  ADVANTAGE OF THE INVENTION According to this invention, the impact tool improved regarding the mounting | wearing technique of a battery can be provided.

It is the figure which made the cross section the part 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. 1, and a battery pack is shown with a dashed-two dotted line. FIG. 2 is a view taken in the direction of arrow B in 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 the figure which made the cross section the part which shows the mounting state of the battery pack with respect to the hammer drill which concerns on 2nd Embodiment of this invention. It is E arrow line view of FIG. It is the figure seen from the back (left side of a figure) of FIG. 10, and is a figure which made one part a cross section. It is the figure which made the cross section the part which shows the mounting state of the battery pack with respect to the hammer drill which concerns on 3rd Embodiment of this invention. It is the figure seen from the back (right side of a figure) of FIG. 13, and is a figure which made one part a cross section. It is a schematic diagram which shows the hammer drill which concerns on 4th Embodiment.

(First embodiment of the present invention)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. Embodiment of this invention is demonstrated using a battery-type hammer drill as an example of a battery-type impact tool. FIG. 1 is a partial cross-sectional view showing the overall configuration of a hammer drill 100 according to the present embodiment. As shown in FIG. 1, a battery-type hammer drill 100 has a hammer bit 119 attached thereto, and the attached hammer bit 119 is struck in the major axis direction and rotated around the major axis direction to apply to the workpiece. It is a striking tool that performs drilling and chipping. This hammer bit 119 corresponds to a “tool bit” 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 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 in which relative rotation in the circumferential direction is restricted. Is done.

  The main body 101 is mainly composed of 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 corresponds to the “handle” in the present invention.

  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 the page is defined as “lower side” or “lower side”.

  The main body 101 is configured such that the gear housing 105 is disposed in the front and the motor housing 103 is disposed in the rear with respect to the longitudinal 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 such that the rotation shaft of the electric motor 110 extends in an inclined manner in the vertical direction, and intersects the striking shaft extending in the major axis direction of the hammer bit 119. The electric motor 110 corresponds to a “motor” in the present invention.

  That is, the hammer drill 100 of the present embodiment has a configuration in which the hammering shaft of the hammer bit 119 and the rotating shaft of the electric motor 110 intersect. 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 left and right half members vertically divided in the longitudinal direction of the hammer bit 119 to each other. .

  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 direction of the hammer bit 119 (the left-right direction in FIG. 1) via the striking element 140. Generates an impact force on. 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. 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 front-rear 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 that transmits 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 that rotates with the intermediate shaft 121 and the first gear 151, and a plurality of second gears 153 and the like 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 up-down direction intersecting the long axis direction of the hammer bit 119, that is, the extending direction of the striking shaft on the same plane. The above vertical direction corresponds to the “handle extending direction” in the present invention. The grip portion 109 </ b> A is arranged at a predetermined interval with respect to the upper portion of the motor housing 103, and the upper portion thereof extends upwardly from the rear end upper portion of the motor housing 103 in a substantially horizontal manner. The lower part is connected by a lower connecting part 103b that extends in a generally horizontal direction from substantially the middle in the vertical direction of the motor housing 103 to the rear. In the present embodiment, as shown in FIG. 1, the upper connecting portion 103a and the lower connecting portion 103b extend integrally from the motor housing 103 and are connected to the grip portion 109A. However, the upper connecting portion 103a and the lower connecting portion 103b are integrally connected to the grip portion 109A. It may be configured to extend to be connected to the motor housing 103.

  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 is provided on the lower surface portion thereof. The mounting portion 160 corresponds to the “mounting portion” in the present invention. The mounting portion 160 includes two battery mounting portions 160A and 160B, and is arranged side by side in the major axis direction of the hammer bit 119. These two battery mounting portions 160A and 160B are provided in a state of being fixed to the lower connecting portion 103b so that they cannot be removed from the hammer drill 100. The 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 “a plurality of battery mounting portions” in the present invention, and the battery packs 170A and 170B correspond to “batteries” in the present invention.

  6 to 9 show details of the battery packs 170A and 170B (one battery pack is shown in the figure). As shown in the figure, the battery packs 170A and 170B are roughly configured mainly by a substantially rectangular battery case 171 and a plurality of battery cells (not shown for convenience) contained in the battery case 171. The The battery packs 170A and 170B are arranged in the left-right direction that intersects both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109 along the lower surface of each battery mounting portion 160A and 160B, that is, one side. The battery mounting portions 160A and 160B are detachably mounted by a slide method that moves horizontally from one side to the other side. The two battery packs 170A and 170B have the same configuration and can be mounted on either of the two battery mounting portions 160A and 160B.

  In order to allow the battery packs 170A and 170B to be detachable, a pair of mounting guides 173 extending linearly along both side surfaces in the longitudinal direction are provided on the upper surface side of the battery case 171. A lock hook 175 and a lock release push button 177 are provided at the center. The locking hook 175 is provided near the rear in the mounting direction of the battery packs 170A and 170B, and is biased by a spring (not shown for convenience) so as to protrude from the upper surface of the battery case 171. The unlocking push button 177 is arranged on the rear side in the mounting direction of the battery case 171. When the push button 177 is pushed in, the hook 175 moves in the direction in which the hook 175 is retracted from the upper surface of the battery case 171. Connected.

  On the other hand, each of the two front and rear battery mounting portions 160A and 160B can be mounted from the side of the battery packs 170A and 170B, as shown in FIGS. 1 and 2, in the longitudinal direction of the hammer bit 119. And a pair of front and rear guide rails 161 linearly extending in the left-right direction intersecting with. The guide rail 161 is integrally formed with the lower connecting portion 103b. The guide rail 161 has a substantially U-shaped cross section in the lateral direction, and one end in the extending direction is opened as an insertion port for the mounting guide 173. The mounting guide 173 of the battery packs 170A and 170B is the long axis of the hammer bit 119. It is inserted by sliding in a direction that intersects both the direction and the direction in which the handgrip 109 extends. 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 a means for preventing the battery packs 170A and 170B from being detached from the battery mounting portions 160A and 160B. The guide rail 161 corresponds to the “battery engaging portion” in the present invention.

  Moreover, each battery mounting part 160A, 160B is provided with the recessed latching | locking part 163 which can latch the hook 175 of battery pack 170A, 170B, as shown in FIG. 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, and the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B. When it is done, it locks with a locking hook 175 as shown in FIG. As a result, the battery packs 170A and 170B are fixed to the battery mounting portions 160A and 160B and are restricted from moving in the direction of removal, that is, falling off. When the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B, the hook 175 is moved downward by being pushed by the locking portion 163 and then returned to the initial position. By doing so, it is configured to be locked to the locking portion 163.

  The battery packs 170A and 170B attached to the battery attachment portions 160A and 160B are placed in a state in which their outer surfaces are exposed except for the upper surface which is the attachment surface for the battery attachment portions 160A and 160B. The lower surface is set so as to be flush with the lower surface of the motor housing 103. As a result, the hammer drill 100 can be 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.

  Thus, 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 is the long axis direction of the hammer bit 119 and the extension of the handgrip 109. They are arranged side by side in the front-rear direction so as to be a crossing direction that intersects both directions of the current direction. That is, 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.

  In this embodiment, the two front and rear battery mounting portions 160A and 160B are viewed from the rear of the hammer drill 100 in the direction of movement (sliding) from the left side to the right side of the battery packs 170A and 170B (shown in FIGS. 3 and 4). F direction (arrow direction) is defined as the mounting direction, and movement in the opposite direction is defined as the removal direction. That is, in the present embodiment, each battery pack 170A, 170B is configured to be mounted on the two front and rear battery mounting portions 160A, 160B by moving in the same direction.

  Further, in the two front and rear battery mounting portions 160A and 160B, when the batteries 170A and 170B are mounted, the respective centers of gravity of the batteries 170A and 170B include the hammer axis of the hammer bit 119 and the central axis of the handgrip 109. It is comprised so that it may be located on a plane.

  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 front and rear guide rails 161. When the battery packs 170A and 170B are mounted on the battery mounting portions 160A and 160B, the terminals 179 of the battery packs 170A and 170B are connected. (See FIGS. 6 and 7). Thereby, it is possible to supply current from the battery packs 170A and 170B to the electric motor 110 and the controller (not shown for convenience).

  Further, as shown in FIG. 3, four cylindrical rubber pins 167 are arranged on the bottom surfaces of the battery mounting portions 160 </ b> A and 160 </ b> B so as to be positioned at the corners 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. Rush. Thereby, rattling due to vibration of the battery packs 170A and 170B can be regulated. The rubber pin 167 may be formed in a shape other than the cylindrical shape, or may be changed from the rubber pin 167 to various spring members such as a leaf spring.

  As described above, according to this embodiment, the battery mounting portions 160A and 160B are set in the front and rear two rows in the lower connecting portion 103b of the motor housing 103, and the battery packs 170A and 170B are set in the respective battery mounting portions 160A and 160B. Is configured to be detachably mounted. For this reason, if the hammer drill 100 is a 36V specification, for example, two 18V battery packs 170A and 170B are mounted and electrically connected in series. The 18V battery pack is considerably lighter in weight than the 36V battery pack. From this, the operator can easily replace the battery packs 170A and 170B, that is, attach / detach the battery packs 170A and 170B to / from the battery mounting portions 160A and 160B, and the operability of the attachment / detachment is improved. If the hammer drill 100 is 18V specification, the two battery packs 170A and 170B may be configured to be electrically connected in parallel. At this time, the hammer drill 100 can be driven for a long time. 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. In the present embodiment, two 18V battery packs 170A and 170B are arranged 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. The configuration is arranged. 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 it arrange | positions so that a longitudinal direction may become the same direction as the major axis direction of the hammer bit 119, the arrangement space of battery pack 170A, 170B regarding the major axis direction of the hammer bit 119 is made small, and the hammer drill 100 is carried out. The length in the front-rear direction, that is, the total length can be configured in a compact shape.

  Further, in the present embodiment, the battery packs 170A and 170B intersect the battery mounting portions 160A and 160B to the side of the hammer drill 100, that is, in both the major axis direction of the hammer bit 119 and the extending direction of the handgrip 109. It is the structure which inserts and mounts | wears from the crossing direction. For this reason, the battery packs 170A and 170B are separated from each other in the direction intersecting the hammering axis of the hammer bit 119, that is, the direction intersecting the vibration direction generated by the hammering operation of the hammer bit 119, and fall off due to the influence of vibration. The possibility can be reduced.

  In the present embodiment, the front and rear battery mounting portions 160A and 160B are configured so that the center of gravity of each of the batteries 170A and 170B corresponds to the hammer shaft 119 and the hand grip 109 when the batteries 170A and 170B are mounted. It is comprised so that it may be located on the plane containing the central axis of. For this reason, the weight balance of the battery packs 170 </ b> A and 170 </ b> B in the left-right direction of the hammer drill 100 can be balanced, and the operability of the hammer drill 100 is not hindered.

  In the present embodiment, the mounting guide 173 of the battery packs 170A and 170B is slid along the guide rails 161 of the battery mounting portions 160A and 160B to be mounted on the battery mounting portions 160A and 160B. Work can be done easily.

  In the present embodiment, since the two battery mounting portions 160A and 160B are provided side by side, the two battery packs 170A and 170B can be arranged in a compact manner, and the electrical wiring related to the battery packs 170A and 170B can be easily routed. Can be achieved.

  In the present embodiment, the battery packs 170 </ b> A and 170 </ b> B are arranged behind the motor housing 103 and below the handgrip 109. In the case of the hammer drill 100 having a configuration in which the rotating shaft of the electric motor 110 extends in the vertical direction intersecting the striking shaft, the region of the motor housing 103 that accommodates the electric motor 110 extends downward from the structural characteristics. A space is created behind the lower connecting portion, and thus below the hand grip 109. The present embodiment is an arrangement of the battery packs 170A and 170B using this space, and is a rational arrangement. Moreover, this position is also a position away from the machining position by the hammer bit 119, and does not interfere with the machining operation.

  In the present 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 are connected to the lower surface of the motor housing 103. It is set to be the same. For this reason, when placing the hammer drill 100 on the ground or floor, the hammer drill 100 can be placed in a stable state.

  Further, in the present embodiment, as shown in FIG. 3, a shock-absorbing elastomer 104 as an elastic member is attached to the lateral outer surface of the lower connecting portion 103b of the motor housing 103 so as to extend in the front-rear direction. When the hammer 104 is placed on the ground or the like in a lateral orientation where the side surface is the ground side, the elastomer 104 contacts the ground or the like in the longitudinal direction of the battery packs 170A and 170B. It is possible to prevent the end surface from coming into direct contact with the ground or the like, and to protect the battery packs 170A and 170B from damage due to contact with the ground or the like.

(Second embodiment of the present invention)
Next, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 10 to 12, in the present embodiment, both the front and rear battery packs 170 </ b> A and 170 </ b> B are arranged on both sides of the hammer drill 100, i.e., both the long axis direction of the hammer bit 119 and the extending direction of the handgrip 109. In the case of mounting by inserting from the crossing direction that intersects the direction, the insertion direction is configured to be staggered. About the structure except the above, it is comprised similarly to the hammer drill 100 of the 1st form mentioned above. Therefore, the components shown in the drawing are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

  In the present embodiment, in order to allow the battery packs 170A and 170B to be inserted alternately, out of the constituent members of the two front and rear battery mounting portions 160A and 160B, the arrangement positions of the locking portion 163 and the terminal 165, and The orientation is such that the front battery mounting portion 160A and the rear battery mounting portion 160B are opposite to each other. Accordingly, as shown by an arrow F in FIG. 11, when viewed from the rear of the hammer drill 100, one (front side) battery pack 170A is mounted by moving from the right side to the left side, and the other (rear side). The battery pack 170B can be mounted by moving from the left side to the right side.

  According to the present embodiment, since two battery packs 170A and 170B are inserted and mounted from the side of the hammer drill 100, the battery packs 170A and 170B are inserted and mounted in alternate directions. Wherever the individual centroids of the packs 170A and 170B are located, the combined centroid of the battery packs 170A and 170B is located on a plane including the hammer axis of the hammer bit 119 and the central axis of the handgrip 109. For this reason, with respect to the battery mounting portions 160A and 160B and the battery packs 170A and 170B, the respective gravity centers of the battery packs 170A and 170B are positioned on a plane including the hammering shaft of the hammer bit 119 and the central axis of the handgrip 109. There is an advantage that no adjustment is required. Except for the above, the same effects as those of the first embodiment described above can be obtained.

(Third embodiment of the present invention)
Next, a third embodiment of the present invention will be described with reference to FIGS. In this embodiment, one battery mounting portion 160A is provided on the lower surface portion of the lower connecting portion 103b of the motor housing 103, and one battery pack 170A is attached to the side of the hammer drill 100, that is, the length of the hammer bit 119. It is configured to be inserted and mounted from the crossing direction that intersects both the axial direction and the direction in which the handgrip 109 extends.

  Therefore, according to the present embodiment, since the arrangement space for the battery pack 170A is small, the lower side of the electric motor 110 can be arranged rearward. As a result, as shown in FIG. 13, the rotation shaft of the electric motor 110 can be arranged so as to be orthogonal to the striking shaft, and accordingly, the motor housing 103 can be made compact and the hammer drill 100 can be downsized. In addition to the above, the same effects as those of the first embodiment described above can be obtained.

(Fourth embodiment of the present invention)
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 15 schematically shows a hammer drill 100 in which the rotation axis of the electric motor 110 intersects with the hammer shaft of the hammer bit 119 in an inclined manner. As shown in the figure, this embodiment is the same as that in the first or second embodiment described above, in the center of the lower surface of the lower connecting portion 103b of the motor housing 103, that is, the front battery mounting portion 160A and the rear battery mounting portion. A rib 103c extending downward is integrally formed between 160B, and the lower surface of the rib 103c is configured to be flush with the lower surface of the handgrip 109. The rib 103c corresponds to a “partition wall” in the present invention. The configuration other than the above is configured in the same manner as in the first embodiment described above.

  According to the present embodiment, the rib 103c can be used as a stand (pedestal) when the hammer drill 100 is placed on the ground or the like. Thereby, when placing the hammer drill 100 on the ground or floor, the hammer drill 100 can be placed in a stable state. In addition, substantially the same effects as those of the first embodiment can be obtained. In addition, about the insertion direction of battery pack 170A, 170B with respect to battery mounting part 160A, 160B in this embodiment, the structure inserted in the same direction like 1st Embodiment, or a staggered direction like 2nd Embodiment. Any of the structures inserted into the can be used.

  In the above-described embodiment, the guide rail 161 and the locking portion 163, which are constituent members of the battery mounting portions 160A and 160B, are described as being formed integrally with the motor housing 103. However, the embodiment is different from the motor housing 103. It is possible to change to a configuration in which it is formed as a body and fixed in a non-removable manner later. Moreover, the battery mounting part may be three or more.

  Moreover, although this Embodiment demonstrated in the case of the hammer drill which performs a striking operation and a rotation operation as an example of a striking tool, it is also possible to apply 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)
An impact tool in which a tool bit linearly moves on an impact axis extending at least in the longitudinal direction,
A motor for driving the tool bit;
A tool body for housing the motor;
A mounting portion on which a battery for supplying current to the motor is detachably mounted;
The 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 mounting portion by sliding the battery with respect to the battery engaging portion in a normal direction of a virtual plane formed by the striking shaft and the rotation shaft of the motor. The impact tool characterized by being made.

(Correspondence between each component of the embodiment and the component of the present invention)
The relationship between each component in the present embodiment and the invention-specific matters of the component in the present invention is as follows. Of course, each component in the present embodiment is only one example of the configuration related to the specific matters of the present invention, and each component of the present invention is not limited to this.
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 mounting portion 160 is an example of a configuration corresponding to the “mounting portion” 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 battery packs 170A and 170B are 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 rib 103c is an example of a configuration corresponding to the “partition wall” of the present invention.

100 Hammer drill (blow tool)
101 Body (Tool body)
103 Motor housing 103a Upper connecting part 103b Lower connecting part 103c Rib (partition wall)
104 Elastomer 105 Gear housing 109 Hand grip (handle)
109A Grip part 109a Trigger 110 Electric motor (motor)
111 Motor shaft 119 Hammer bit (Tool bit)
120 Motion Conversion Mechanism 121 Intermediate Shaft 123 Rotating Body 125 Oscillating Member 127 Cylindrical Piston 127a Air Chamber 129 Cylinder 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, 160B Battery mounting part (multiple battery mounting parts)
161 Guide rail (battery engaging part)
163 Locking portion 165 Terminal 167 Rubber pin 170A, 170B Battery pack (battery)
171 Battery case 173 Installation guide 175 Lock hook 177 Lock release push button 179 Terminal

Claims (8)

An impact tool in which a tool bit linearly moves on an impact axis extending at least in the longitudinal direction,
A motor for driving the tool bit;
A tool body for housing the motor;
A handle connected to the tool body;
A mounting portion on which a battery for supplying current to the motor is detachably mounted;
The handle is provided so as to extend in a handle extending direction that intersects the major axis direction,
The 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,
As the battery slides with respect to the battery engaging portion in an intersecting direction intersecting both the major axis direction and the handle extending direction, the battery is attached to the attachment portion. A striking tool characterized by comprising. The impact tool according to claim 1,
The mounting portion is configured such that the center of gravity of the battery mounted on the mounting portion is positioned on a plane including the striking shaft and a handle central axis extending in the handle extending direction. Characteristic impact tool. The impact tool according to claim 1 or 2,
The mounting portion is composed of a plurality of battery mounting portions to which a plurality of batteries are detachably mounted,
The impact tool according to claim 1, wherein the plurality of battery mounting portions are provided side by side in the major axis direction. The impact tool according to claim 3,
A partition is provided between at least two of the battery mounting portions of the plurality of battery mounting portions,
A striking tool characterized in that the lower end surface of the partition wall and the lower end surface of the tool body are flush with each other when the handle extending direction is defined as the vertical direction. The impact tool according to claim 3 or 4,
The mounting portion includes an even number of battery mounting portions to which an even number of batteries are detachably mounted,
Of the even number of the battery mounting parts, the battery mounting part of the half is configured such that the battery is mounted by sliding the battery with respect to the battery engaging part in one direction, Of the even number of the battery mounting portions, the remaining half of the battery mounting portions are mounted by the battery sliding relative to the battery engaging portion in a direction opposite to the one direction. A striking tool characterized in that it is configured to be made. The impact tool according to claim 3 or 4,
The mounting portion includes an even number of battery mounting portions to which an even number of batteries are detachably mounted,
Each said battery mounting part is comprised so that the said battery may be mounted from the direction opposite to the said battery mounting part adjacent to each other, The impact tool characterized by the above-mentioned. It is an impact tool given in any 1 paragraph of Claims 3-6,
The plurality of battery mounting portions are configured such that a combined center of gravity of the plurality of batteries mounted on the battery mounting portion is located on a plane including the striking shaft and a handle central axis extending in the handle extending direction. The impact tool characterized by being made. The impact 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 may cross | intersect the said impact shaft.

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