JP2014172141A - Hammer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improving technology related to a rational layout of each structure element of a hammer.SOLUTION: A hammer drill 100 for driving a hammer bit 119 detachably attached to a tip end area of a body portion 101 is provided. The hammer drill 100 has a driving motor 110 for driving the hammer bit 119, and a motion conversion mechanism 120 for converting the rotational motion of the driving motor 110 into a linear motion in a longitudinal direction of the hammer bit 119. The driving motor 110 disposes a motor shaft 111 on a tip end area side rather than a rotor 124 which is a fulcrum of a rocking member 125 so as to extend in an intersecting direction intersecting the longitudinal direction of the hammer bit 119.

Description

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

  Japanese Patent Application Laid-Open No. 2011-088233 discloses a hammer drill including a motion conversion mechanism having a rocking ring. In the hammer drill, the output shaft of the drive motor that intersects the long axis direction of the hammer bit is disposed closer to the hand grip than the swing ring.

JP 2011-088233 A

  In the hammer drill described in Japanese Patent Application Laid-Open No. 2011-088233, since the drive motor is disposed on the rear side of the swing ring, the length of the hammer drill in the long axis direction of the hammer bit is increased. In other words, there is room for further improvement regarding the arrangement of the components of the impact tool. Then, this invention is made | formed in view of the above, and it aims at providing the improvement technique regarding rational arrangement | positioning of each component of an impact tool.

  In order to achieve the above object, according to a preferred embodiment of the impact tool according to the present invention, an impact tool for driving a tip tool removably attached to the tip region of the tool body is configured. The impact tool includes a motor for driving the tip tool, and a motion conversion mechanism that has a swing member and converts the rotational motion of the motor into a linear motion in the long axis direction of the tip tool by the swing member. Have. And the motor is arrange | positioned rather than the fulcrum of a rocking | swiveling member at the front-end | tip area | region side so that the rotating shaft of a motor may extend in the crossing direction which cross | intersects the long-axis direction of a front-end tool.

  According to the present invention, since the rotation shaft of the motor is disposed closer to the tip region than the fulcrum of the peristaltic member, compared to the configuration in which the rotation shaft of the motor is disposed behind the fulcrum of the peristaltic member, The center of gravity can be set on the tip region side. Therefore, by placing each component of the impact tool rationally and setting the center of gravity of the impact tool on the tip region side, in the work work of the work material, the work material with which the tip tool contacts is the center. The moment of inertia generated in the impact tool can be reduced.

  According to the preferable form of the another impact tool which concerns on this invention, the impact tool which drives the front-end tool removably attached to the front-end | tip area | region of the tool main body is comprised. The impact tool has a motor for driving the tip tool, a crank mechanism, and a motion conversion mechanism that converts the rotational motion of the motor into a linear motion in the long axis direction of the tip tool by the crank mechanism, and is driven by the motor. A rotation transmission mechanism that rotates the tip tool around the long axis of the tip tool by transmitting the rotational motion of the intermediate shaft. And the motor is arrange | positioned rather than the rotating shaft and intermediate shaft of a crank mechanism at the front end area | region side so that the rotating shaft of a motor may extend in the crossing direction which cross | intersects a major axis direction.

  According to the present invention, since the rotating shaft of the motor is disposed on the tip region side of the rotating shaft and the intermediate shaft of the crank mechanism, the rotating shaft of the motor is disposed behind the rotating shaft and the intermediate shaft of the crank mechanism. Compared to the configuration, the center of gravity of the impact tool can be set on the tip region side. Therefore, by placing each component of the impact tool rationally and setting the center of gravity of the impact tool on the tip region side, in the work work of the work material, the work material with which the tip tool contacts is the center. The moment of inertia generated in the impact tool can be reduced.

  According to the further form of the impact tool which concerns on this invention, it has a handle | steering_wheel clamped by an operator. And the handle | steering-wheel is arrange | positioned on the long axis line of the tip tool on the opposite side to the front-end | tip area | region of the tool main body regarding a major axis direction. In this case, at least a part of the handle may be arranged on the long axis of the tip tool.

  According to this embodiment, since the handle is disposed on the long axis of the tip tool, the force applied to the handle by the operator is efficiently transmitted to the tip tool. Thereby, the work of the workpiece is efficiently performed.

  According to the further form of the impact tool according to the present invention, the battery mounting portion to which a battery for supplying current to the motor is detachably mounted, and the region on the opposite side of the front end region of the motor in the major axis direction, And a battery mounting portion arrangement portion provided in a region of the end portion of the handle in the crossing direction. And the battery mounting part is arrange | positioned at the battery mounting part arrangement | positioning part.

  According to the present embodiment, by arranging the rotating shaft of the motor so as to approach the tip region where the tip tool is mounted, the components of the impact tool are arranged in the rear region opposite to the tip region of the motor. A relatively large area can be formed. That is, the battery mounting portion placement portion can be formed in a region behind the motor formed by placing the motor so as to approach the tip region. Therefore, the components of the impact tool can be reasonably disposed by disposing the battery mounting portion in the battery mounting portion disposing portion. Moreover, even if it is a case where it is comprised so that a high capacity | capacitance battery can be mounted in a battery mounting part, the enlargement of a striking tool is suppressed.

  According to the further form of the impact tool which concerns on this invention, it is comprised so that a some battery may be mounted | worn with the battery mounting part so that attachment or detachment is possible. Here, the plurality of batteries typically means a plurality of batteries that are used simultaneously during the working operation of the impact tool. The battery mounting unit may be configured so that a plurality of types of batteries can be mounted.

  According to this embodiment, the battery mounting portion is arranged in a relatively large area behind the motor formed by arranging the rotation shaft of the motor so as to approach the tip area where the tip tool is mounted. Therefore, even if it is a case where a some battery is comprised so that attachment to a battery attachment part is possible, the enlargement of an impact tool is suppressed.

  According to the further form of the impact tool which concerns on this invention, the battery mounting part is comprised so that a some battery can be mounted along with the direction parallel to the major axis direction of a front-end tool.

  In general, a battery attached to the impact tool is formed in a shape having a major axis and a minor axis. Therefore, in a configuration in which a plurality of batteries are mounted on the battery mounting portion so that the long axis direction of the battery is parallel to the long axis direction of the tip tool, the impact tool of the impact tool in the direction orthogonal to the long axis direction of the tip tool is used. Increase in size is suppressed. On the other hand, in the configuration in which a plurality of batteries are mounted on the battery mounting portion so that the long axis direction of the battery is orthogonal to the long axis direction of the tip tool, an increase in the size of the impact tool in the long axis direction of the tip tool is suppressed. The That is, an increase in the size of the impact tool in the minor axis direction of the mounted battery is suppressed.

  According to the further form of the impact tool which concerns on this invention, it is a control apparatus which controls an impact tool, and the front-end tool of the front-end tool which is on the opposite side to the front-end | tip area | region of a motor regarding a major axis direction, And a control device disposition portion provided between the battery mounting portion disposition portion and the motion conversion mechanism with respect to the intersecting direction intersecting the long axis direction. And the control apparatus is arrange | positioned at the control apparatus arrangement | positioning part.

  According to this embodiment, it is possible to further provide a control device arrangement portion in a relatively large area behind the motor formed by arranging the rotation shaft of the motor so as to approach the tip area where the tip tool is mounted. In addition, as a control apparatus arrangement | positioning part, it is sufficient if it is provided as an area | region which can arrange | position the member for controlling an impact tool. And each component of an impact tool can be rationally arrange | positioned by arrange | positioning a control apparatus to this control apparatus arrangement | positioning part. Thereby, the enlargement of an impact tool is suppressed.

  According to the present invention, an improved technique relating to the rational arrangement of each component of the impact tool is provided.

It is sectional drawing which shows the whole structure of the hammer drill which concerns on 1st Embodiment. It is sectional drawing which shows the state with which two batteries were mounted | worn with the hammer drill of FIG. It is sectional drawing which shows the whole structure of the hammer drill which concerns on 2nd Embodiment. It is sectional drawing which shows the state with which two batteries were mounted | worn with the hammer drill of FIG.

(First embodiment)
1st Embodiment is described with reference to FIG. 1, FIG. The first embodiment will be described using an electric hammer drill as an example of a rotary tool. As shown in FIG. 1, the hammer drill 100 is configured mainly by a main body 101 as a tool main body that forms an outline of the hammer drill 100 when viewed generally. A hammer bit 119 is detachably attached to the distal end region (left side in FIG. 1) of the main body 101 via a cylindrical tool holder 159. The hammer bit 119 is attached to the tool holder 159 so as to be relatively movable in the axial direction and to rotate integrally in the circumferential direction. A hand grip 107 gripped by the operator is connected to the opposite side of the tip region of the main body 101. The hammer bit 119 is an implementation configuration example corresponding to the “tip tool” in the present invention. For convenience of explanation, the left side of FIG. 1 is referred to as the front side or the front side of the hammer drill 100, and the right side of FIG.

  The main body 101 includes a main body housing 103 that houses a drive motor 110 and a gear housing 105. The gear housing 105 houses the motion conversion mechanism 120, the striking element 140, and the rotation transmission mechanism 150. The drive motor 110 is arranged so that the motor shaft 111 extends in a vertical direction (vertical direction in FIG. 1) substantially orthogonal to the long axis direction of the hammer bit 119. A first bevel gear 112 is attached to the motor shaft 111. The rotational motion of the motor shaft 111 is appropriately converted into a linear motion by the motion conversion mechanism 120 and then transmitted to the striking element 140, and an impact force in the major axis direction of the hammer bit 119 is generated via the striking element 140. The drive motor 110 and the motor shaft 111 are implementation configuration examples corresponding to the “motor” and the “rotating shaft” in the present invention, respectively.

  The rotation of the motor shaft 111 is decelerated by the rotation transmission mechanism 150 and transmitted to the hammer bit 119 via the tool holder 159. As a result, the hammer bit 119 is rotated in the circumferential direction around the long axis. The drive motor 110 is energized and driven by a pulling operation of a trigger 107 a disposed on the hand grip 107.

  The motion conversion mechanism 120 is mainly configured by a second bevel gear 121, a first intermediate shaft 123, a swing member 125, and a cylinder 127. The second bevel gear 121 is connected to the first intermediate shaft 123 and rotates by engaging with the first bevel gear 112 to rotate the first intermediate shaft 123. A rotating body 124 is attached to the first intermediate shaft 123 so as to rotate integrally with the first intermediate shaft 123. Further, a rocking member 125 is disposed outside the rotating body 124, and the rocking member 125 is rocked in the front-rear direction of the hammer drill 100 as the rotating body 124 rotates. The swing member 125 and the rotating body 124 are implementation examples corresponding to the “swing member” and the “fulcrum of the swing member” in the present invention, respectively.

  A cylinder 127 whose front is opened is connected to the tip of the swing member 125. The cylinder 127 is slidably disposed inside the tool holder 159. That is, the cylinder 127 reciprocates in the front-rear direction of the hammer drill 100 as the swing member 125 moves. Thereby, the rotational motion of the drive motor 110 is converted into the linear motion of the hammer bit 119 in the major axis direction. The motion conversion mechanism 120 is disposed on the handgrip 107 side (rear side of the hammer drill 100) with respect to the drive motor 110. That is, the motor shaft 111 of the drive motor 110 is disposed on the hammer bit 119 side (front side of the hammer drill 110) with respect to the rotating body 124 constituting the fulcrum of the swing member 125 among the components of the motion conversion mechanism 120.

  The striking element 140 is mainly composed of a striker 143 and an impact bolt 145. The striker 143 is slidably disposed in the cylinder 127. The impact port 145 is slidably disposed in the tool holder 159 and is configured as an intermediate that transmits the kinetic energy of the striker 143 to the hammer bit 119. An air chamber 128 is formed in the cylinder 127 behind the striker 143. That is, the striker 143 is driven by the pressure fluctuation of the air chamber 128 based on the movement of the cylinder 127 and collides with the impact bolt 145. As a result, the impact bolt 145 collides with the hammer bit 119 and generates a striking force in the major axis direction of the hammer bit 119.

  The rotation transmission mechanism 150 is mainly composed of a second intermediate shaft 151, a second drive gear 155, and an urging spring 157. The second intermediate shaft 151 is coaxially arranged and connected to the first intermediate shaft 123, and is configured to rotate integrally with the second bevel gear 121. A first drive gear 153 is fixedly attached to the outer peripheral surface of the second intermediate shaft 151. The second drive gear 155 is arranged on the outer peripheral surface of the tool holder 159 so as to be slidable in the long axis direction of the tool holder 159. The second drive gear 155 is disposed so as to engage with the first drive gear 153. The second drive gear 155 is configured to be engageable with a convex portion 159 a formed on the outer peripheral surface of the tool holder 159. That is, a cam surface is formed on the second drive gear 155 and the convex portion 159a. Further, the second drive gear 155 is biased toward the convex portion 159a by the biasing spring 157, and the second drive gear 155 and the convex portion 159a are engaged with each other by the cam surface coming into contact therewith. Then, when the second drive gear 155 engages with the convex portion 159a, the second drive gear 155 rotated by the first drive gear 153 rotates the tool holder 159. Thereby, the hammer bit 119 is rotationally driven around the major axis.

  Further, as shown in FIG. 1, a battery attachment portion arrangement region 170 for arranging the battery attachment portion 171 is provided in the lower region of the hand grip 107. The battery mounting portion arrangement area 170 is provided behind the drive motor 110 with respect to the long axis direction of the hammer bit 119. A battery mounting portion 171 to which the battery 180 is detachably mounted is disposed in the battery mounting portion arrangement area 170. The battery mounting portion placement area 170 and the battery mounting portion 171 are implementation configuration examples corresponding to the “battery mounting portion placement portion” and the “battery mounting portion” in the present invention, respectively.

  Further, a controller arrangement area 160 for arranging a controller 161 for controlling the drive motor 110 is provided between the drive motor 110 and the hand grip 107 and in an upper area of the battery mounting part arrangement area 170. . In other words, the controller arrangement area 160 is provided between the battery mounting unit 170 and the motion conversion mechanism 120. In this controller arrangement area 160, a controller 161 is arranged and electrically connected to a terminal formed on the battery mounting portion 170. Thereby, a current is supplied to the controller 161 from the battery 180 attached to the battery attachment unit 170. The controller placement area 160 and the controller 161 are implementation configuration examples corresponding to the “control device placement section” and “control device” in the present invention, respectively.

  The battery mounting portion 171 is not only mounted with a large-capacity battery 180 as shown in FIG. 1, but also with a plurality of small-capacity batteries 181 in the longitudinal direction of the hammer bit 119 as shown in FIG. It is configured to be mounted side by side. That is, the operator can selectively attach the large capacity battery 180 and the small capacity battery 181 to the battery mounting portion 171. For example, it is preferable that the large capacity battery 180 can supply a voltage of 36V, and the small capacity battery 181 can supply a voltage of 18V. In FIG. 2, the two batteries 181 may be electrically connected in series to supply a voltage of 36V to the controller 161, or may be electrically connected in parallel to supply a voltage of 18V to the controller 161. May be. Moreover, you may be comprised so that the connection of a some battery may be switched between series and parallel.

  The mounting direction of the batteries 180 and 181 with respect to the battery mounting portion 171 may be a direction parallel to the major axis direction of the hammer bit 119 or a direction intersecting the major axis direction of the hammer bit 119. Further, the battery 180 and the battery 181 may be mounted in different directions. Moreover, the battery mounting part 171 may be comprised so that 3 or more batteries can be mounted | worn.

  When the driving motor 110 is driven, the hammer drill 100 described above generates a hammering force on the hammer bit 119 via the motion conversion mechanism 120 and the striking element 140, and the long axis of the hammer bit 119 via the rotation transmission mechanism 150. Rotate around. Thereby, a hammer drill operation is performed on the workpiece.

  When the hammer bit 119 is captured by the workpiece during the hammer drilling operation, the rotation of the hammer bit 119 is stopped, but the drive motor 110 continues to rotate. As a result, the second drive gear 155 moves forward of the hammer drill 100 against the biasing force of the biasing spring 157, and the engagement between the second drive gear 115 and the cam surface of the convex portion 159a is released. That is, the second drive gear 155, the biasing spring 157, and the convex portion 159a of the tool holder 159 form an overload clutch.

  According to the first embodiment described above, the motor shaft 111 is disposed on the front side (side closer to the tip region of the hammer drill 100) than the rotating body 124 that forms the fulcrum of the swing member 125 of the motion conversion mechanism 120. The That is, the drive motor 110 is disposed on the tip region side of the hammer drill 100. Thereby, the center of gravity of the hammer drill 100 is set on the tip region side. Therefore, the moment of inertia generated in the hammer drill 100 around the workpiece with which the hammer bit 119 abuts can be reduced in the machining operation of the workpiece.

  Further, according to the first embodiment, since the drive motor 110 is disposed on the tip region side of the hammer drill 100, a relatively large region for disposing each component of the hammer drill 100 is formed on the rear side of the drive motor 110. Is done. This relatively large area can be set as, for example, the controller placement area 160 or the battery mounting portion placement area 170. Thereby, the controller 161 and the battery mounting part 171 can be arrange | positioned efficiently.

  Furthermore, by setting a relatively large area as the battery attachment part arrangement area 170, the hammer bit can be used even when the large capacity battery 180 is attached to the battery attachment part 171 arranged in the battery attachment part arrangement area 170. An increase in the size of the hammer drill 100 in the long axis direction of 119 is suppressed. That is, each component can be rationally arranged without increasing the hammer drill 100.

  Even when a plurality of small-capacity batteries 181 are mounted on the battery mounting portion 171, the size of the hammer drill 100 in the long axis direction of the hammer bit 119 is suppressed. Generally, a battery is formed in a substantially rectangular parallelepiped shape having a major axis and a minor axis. Therefore, when the plurality of batteries 181 are mounted on the battery mounting portion 171 so that the long axes of the plurality of batteries 181 are parallel to the long axis direction of the hammer bits 119, they intersect the long axis direction of the hammer bits 119. An increase in the size of the hammer drill 100 in the direction in which it is performed is suppressed. On the other hand, when the plurality of batteries 181 are mounted on the battery mounting portion 171 so that the long axes of the plurality of batteries 181 intersect the long axis direction of the hammer bits 119, the hammer drill 100 in the long axis direction of the hammer bits 119 is used. Increase in size is suppressed.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. The hammer drill 100 according to the second embodiment is different from the hammer drill 100 according to the first embodiment in a motion conversion mechanism 220 and a rotation transmission mechanism 250. The components other than the motion conversion mechanism 220 and the rotation transmission mechanism 250 are substantially the same as those of the hammer drill 100 of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  A motor shaft gear 212 is attached to the tip of the motor shaft 111 of the drive motor 110 so as to rotate integrally with the motor shaft 111.

  The motion conversion mechanism 220 is mainly composed of a first drive gear 223, a first intermediate shaft 225, an eccentric shaft 227, a connecting rod 229, and a piston 231. The first drive gear 223 is disposed so as to engage with the second drive gear 253, and is configured to rotate integrally with the first intermediate shaft 225. An eccentric shaft 227 is provided at a tip portion of the first intermediate shaft 225 at a position shifted from the axis of the first intermediate shaft 225. The connecting rod 229 is provided so as to connect the eccentric shaft 227 and the piston 231. The piston 231 is disposed inside the tool holder 159 so as to be slidable on the tool holder 159. Thereby, the piston 231 is linearly moved in the long axis direction of the hammer bit 119. That is, the motion conversion mechanism 220 is configured as a crank mechanism that converts the rotational motion of the drive motor 110 transmitted to the first drive gear 223 via the second drive gear 253 into the linear motion of the hammer bit 119 in the major axis direction. ing. A space in front of the piston 231 and behind the striker 143 of the striking element 140 is configured as an air chamber 233 formed in the tool holder 159. The motion conversion mechanism 220 is disposed on the handgrip 107 side (rear side of the hammer drill 100) with respect to the drive motor 110. That is, the motor shaft 111 of the drive motor 110 is disposed on the hammer bit 119 side (the front side of the hammer drill 110) with respect to the first intermediate shaft 225 that is the rotation shaft of the crank mechanism among the components of the motion conversion mechanism 220. The first intermediate shaft 225 is an implementation configuration example corresponding to the “rotary shaft of the crank mechanism” in the present invention.

  The rotation transmission mechanism 250 mainly includes a second intermediate shaft 251, a second drive gear 253, a first bevel gear 255, a second bevel gear 257, a cam member 259, and an urging spring 261. The second drive gear 253 is disposed so as to engage with the motor shaft gear 212 and is configured to rotate integrally with the second intermediate shaft 251. A first bevel gear 255 is attached to the tip of the second intermediate shaft 251. The second bevel gear 257 is disposed on the outer periphery of the tool holder 159 so as to be rotatable relative to the tool holder 159 so as to engage with the first bevel gear 255. A cam member 259 is disposed in front of the second bevel gear 257. The cam member 259 is biased toward the second bevel gear 257 by the biasing spring 261.

  The cam member 259 is configured to engage with the key groove 159 b of the tool holder 159 and rotate integrally with the tool holder 159, and slides in the longitudinal direction of the hammer bit 119 with respect to the tool holder 159. It is configured to be possible. A cam surface is formed on the second bevel gear 257 and the cam member 259, and the second bevel gear 257 and the cam member 259 are engaged with each other when the cam surface abuts. Then, the second bevel gear 257 engages with the cam member 259, whereby the second bevel gear 257 rotated by the first bevel gear 255 rotates the tool holder 159 via the cam member 259. When the hammer bit 119 is captured by the workpiece during the hammer drill operation, the engagement between the second bevel gear 257 and the cam surface of the cam member 259 is released as in the first embodiment. Thereby, the second bevel gear 257, the cam member 259, the biasing spring 261, and the key groove 159b of the tool holder 159 form an overload clutch. At this time, the motor shaft 111 of the drive motor 110 is disposed on the hammer bit 119 side (front side of the hammer drill 110) with respect to the second intermediate shaft 251 to which the rotation of the motor shaft 111 is transmitted among the components of the rotation transmission mechanism 250. ing. The second intermediate shaft 251 is an implementation configuration example corresponding to the “intermediate shaft” in the present invention.

  In the second embodiment, the battery mounting portion 171 is not only mounted with a large-capacity battery 180 as shown in FIG. 3 but also with a plurality of batteries as shown in FIG. A small-capacity battery 181 is mounted.

  As described above, in the second embodiment, the motor shaft 111 of the drive motor 110 is disposed on the hammer bit 119 side (front side of the hammer drill 110) with respect to the first intermediate shaft 225 and the second intermediate shaft 251. Thereby, the center of gravity of the hammer drill 100 is further set on the tip region side. The effect of disposing the drive motor 110 on the tip region side of the hammer drill 100 is the same as that of the first embodiment.

  In the above, the battery mounting unit 171 is configured so that the large capacity battery 180 and the small capacity battery 181 can be mounted, but is not limited thereto. For example, the battery mounting unit 171 may be configured so that only the large-capacity battery 180 is mounted. On the other hand, for example, the battery mounting portion 171 is configured so that a large capacity battery 180 and a plurality of small capacity batteries 181 can be mounted, and the hammer drill 100 can be driven by mounting only one small capacity battery 181. May be.

  In the above description, the battery mounting portion placement region 170 is configured to be provided with the battery mounting portion 171 to which the batteries 180 and 181 are attached. However, the present invention is not limited to this. For example, in the battery mounting portion arrangement region 170, an additional device mounting portion to which a dust collecting device including a motor and a fan, a dust storage device that temporarily stores dust, and the like is detachably mounted is disposed. It may be configured. That is, the battery mounting part placement region 170 may be configured so that a mounting part to which a device used when the hammer drill 100 is driven can be placed. The battery mounting unit 171 may be configured so that the batteries 180 and 181 can be mounted and the additional device can be mounted.

  In the above description, the controller 161 is arranged in the controller arrangement area 160. However, the present invention is not limited to this. That is, the controller arrangement area 160 may be provided as an area where an apparatus for controlling the hammer drill 100 can be arranged.

  Moreover, in the above, although the hammer drill was demonstrated as an example of an impact tool, it is not restricted to this. For example, the present invention can be applied to an electric hammer that does not have a rotation transmission mechanism.

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 1)
“A striking tool according to claim 5 or 6,
The impact tool characterized in that the battery mounting portion is configured to be mounted by sliding the battery in a direction intersecting both the long axis and the extending axis from which the handle extends. . "

(Aspect 2)
"A striking tool according to any one of claims 4 to 7 or aspect 1,
The impact tool characterized in that the battery mounting portion arrangement portion is provided on the same side as the side on which the motor is arranged with respect to the long axis. "

(Correspondence between each component of this embodiment and each component of the present invention)
The correspondence between each component of the present embodiment and each component of the present invention is shown as follows. In addition, this embodiment shows an example of the form for implementing this invention, and this invention is not limited to the structure of this embodiment.
The hammer drill 100 is an example of a configuration corresponding to the “striking tool” of the present invention.
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 “tip tool” of the present invention.
The drive motor 110 is an example of a configuration corresponding to the “motor” of the present invention.
The motor shaft 111 is an example of a configuration corresponding to the “rotary shaft” of the present invention.
The motion conversion mechanism 120 is an example of a configuration corresponding to the “motion conversion mechanism” of the present invention.
The swing member 125 is an example of a configuration corresponding to the “swing member” of the present invention.
The rotating body 124 is an example of a configuration corresponding to the “fulcrum of the swinging member” of the present invention.
The motion conversion mechanism 220 is an example of a configuration corresponding to the “motion conversion mechanism” of the present invention.
The first intermediate shaft 225 is an example of a configuration corresponding to the “rotary shaft of the crank mechanism” of the present invention.
The rotation transmission mechanism 250 is an example of a configuration corresponding to the “rotation transmission mechanism” of the present invention.
The second intermediate shaft 251 is an example of a configuration corresponding to the “intermediate shaft” of the present invention.
The controller arrangement area 160 is an example of a configuration corresponding to the “control device arrangement unit” of the present invention.
The controller 161 is an example of a configuration corresponding to the “control device” of the present invention.
The battery mounting portion arrangement area 170 is an example of a configuration corresponding to the “battery mounting portion arrangement portion” of the present invention.
The battery mounting portion 171 is an example of a configuration corresponding to the “battery mounting portion” of the present invention.

DESCRIPTION OF SYMBOLS 100 Hammer drill 101 Main body part 103 Main body housing 105 Gear housing 107 Hand grip 107a Trigger 110 Drive motor 111 Motor shaft 112 First bevel gear 119 Hammer bit 120 Motion conversion mechanism 121 Second bevel gear 123 First intermediate shaft 124 Rotating body 125 Oscillating member 127 Cylinder 128 Air chamber 140 Stroke element 143 Strike 145 Impact bolt 150 Rotation transmission mechanism 151 Second intermediate shaft 153 First drive gear 155 Second drive gear 157 Energizing spring 159 Tool holder 159a Protruding portion 159b Key groove 160 Controller arrangement area 161 Controller 170 Battery mounting portion arrangement region 171 Battery mounting portion 180 Battery 181 Battery 212 Motor shaft gear 220 Motion conversion mechanism 223 First drive gear 225 First The intermediate shaft 227 eccentric shaft 229 connecting rod 231 piston 233 air chamber 250 rotation transmitting mechanism 251 second intermediate shaft 253 second driving gear 255 first bevel gear 257 second bevel gear 259 biasing spring cam member 261

Claims (7)

An impact tool for driving a tip tool removably attached to the tip region of the tool body,
A motor for driving the tip tool;
A motion conversion mechanism that has a swing member and converts the rotational motion of the motor into a linear motion in the long axis direction of the tip tool by the swing member;
The impact tool characterized in that the motor is arranged closer to the tip region than the fulcrum of the swing member so that the rotation axis of the motor extends in a crossing direction intersecting the major axis direction. . An impact tool for driving a tip tool removably attached to the tip region of the tool body,
A motor for driving the tip tool;
A motion conversion mechanism that has a crank mechanism and converts the rotational motion of the motor into a linear motion in the longitudinal direction of the tip tool by the crank mechanism;
A rotation transmission mechanism that has an intermediate shaft driven by the motor and rotates the tip tool around the long axis of the tip tool by transmitting the rotational motion of the intermediate shaft;
The motor is disposed closer to the tip region than the rotation shaft of the crank mechanism and the intermediate shaft so that the rotation shaft of the motor extends in a crossing direction intersecting the major axis direction. Blow tool. The impact tool according to claim 1 or 2,
Having a handle to be gripped by an operator,
The impact tool according to claim 1, wherein the handle is disposed on a long axis of the tip tool on a side opposite to the tip region of the tool body in the long axis direction. The impact tool according to claim 3,
A battery mounting portion on which a battery for supplying current to the motor is detachably mounted;
A battery mounting portion disposition portion provided in a region opposite to the tip region of the motor in the major axis direction and in an end region of the handle in the intersecting direction;
The impact tool, wherein the battery mounting portion is disposed in the battery mounting portion arrangement portion. The impact tool according to claim 4,
A striking tool characterized in that a plurality of batteries are detachably mounted on the battery mounting portion. The impact tool according to claim 5,
The battery mounting portion is configured so that a plurality of the batteries can be mounted side by side in a direction parallel to the long axis direction. The impact tool according to any one of claims 4 to 6,
A control device for controlling the impact tool;
A control device placement portion provided on the opposite side of the tip region of the motor with respect to the major axis direction and provided between the battery mounting portion placement portion and the motion conversion mechanism with respect to the crossing direction;
The impact tool according to claim 1, wherein the control device is arranged in the control device arrangement portion.

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