WO2014142112A1 - Impact tool - Google Patents

Impact tool Download PDF

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Publication number
WO2014142112A1
WO2014142112A1 PCT/JP2014/056299 JP2014056299W WO2014142112A1 WO 2014142112 A1 WO2014142112 A1 WO 2014142112A1 JP 2014056299 W JP2014056299 W JP 2014056299W WO 2014142112 A1 WO2014142112 A1 WO 2014142112A1
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WO
WIPO (PCT)
Prior art keywords
tool
motor
tip
impact tool
battery mounting
Prior art date
Application number
PCT/JP2014/056299
Other languages
French (fr)
Japanese (ja)
Inventor
陽之介 青木
Original Assignee
株式会社マキタ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社マキタ filed Critical 株式会社マキタ
Publication of WO2014142112A1 publication Critical patent/WO2014142112A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/062—Means for driving the impulse member comprising a wobbling mechanism, swash plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/121—Housing details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other

Definitions

  • the present invention relates to an impact tool for performing a predetermined processing operation on a workpiece.
  • Japanese Unexamined Patent Application Publication No. 2011-088233 discloses a hammer drill having a motion conversion mechanism having a rocking ring.
  • 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.
  • the present invention has been made in view of the above, and an object thereof is to provide an improved technique related to the rational arrangement of each component of the impact tool.
  • the impact tool which drives the tip tool removably attached to the front-end
  • the impact tool includes a motor for driving the tip tool and a swing member, and a motion conversion mechanism that converts the rotational motion of the motor into a linear motion in the major axis direction of the tip tool by the swing member;
  • the motor is arrange
  • the rotation shaft of the motor is disposed on the distal end region side with respect to the fulcrum of the swinging member, compared with the configuration in which the rotation shaft of the motor is disposed behind the fulcrum of the swinging member.
  • the center of gravity of the tool is set on the tip region side. Therefore, each component of the impact tool is reasonably arranged.
  • the moment of inertia generated in the impact tool centered on the tip of the tip tool that contacts the workpiece during processing of the workpiece is reduced.
  • 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, a crank mechanism, 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, and a motor. And 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.
  • the motor is arrange
  • 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.
  • the center of gravity of the impact tool is set on the tip region side. Therefore, each component of the impact tool is reasonably arranged.
  • the moment of inertia generated in the impact tool centered on the tip of the tip tool that contacts the workpiece during processing of the workpiece is reduced.
  • the impact tool has a handle that is gripped by an operator.
  • steering-wheel is arrange
  • at least a part of the handle may be arranged on the long axis of the tip tool.
  • the handle is arranged 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.
  • the battery mounting part is arrange
  • the components of the impact tool are arranged in the rear region opposite to the tip region of the motor.
  • a relatively large area is formed. That is, the battery mounting portion arrangement portion is formed in a region behind the motor formed by arranging the motor so as to be close to the tip region. Therefore, the components of the impact tool are rationally arranged by arranging the battery mounting portion in the battery mounting portion arrangement portion.
  • the battery mounting portion is configured such that a plurality of batteries are detachably mounted.
  • 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 not only to be able to mount a single battery but also to be able to mount a plurality of types of batteries.
  • the fact that a plurality of types of batteries can be attached means that a large battery and a small battery can be attached.
  • the difference between a large battery and a small battery means the size (shape) of the battery and the battery capacity. More preferably, the battery is slid and mounted on the battery mounting portion in a direction intersecting both the long axis of the tip tool and the extending axis extending from the handle.
  • the battery mounting portion is arranged in a relatively large area behind the motor formed by arranging the rotating shaft of the motor close to the tip area of the tool body. Therefore, even if a plurality of batteries can be mounted on the battery mounting portion, an increase in the size of the impact tool is suppressed.
  • the battery mounting portion is configured such that a plurality of batteries can be mounted side by side in a direction parallel to the longitudinal direction of the tip tool.
  • a battery attached to the impact tool is formed in a shape having a major axis and a minor axis (for example, a rectangular parallelepiped shape). Therefore, in this embodiment, when 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 direction orthogonal to the long axis direction of the tip tool An increase in the size of the impact tool is suppressed.
  • the large size of the impact tool in the long axis direction of the tip tool Is suppressed. That is, an increase in the size of the impact tool in the minor axis direction of the mounted battery is suppressed.
  • 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
  • control device disposition unit is further disposed in a relatively large region behind the motor formed by disposing the rotation shaft of the motor so as to be close to the tip region of the tool body.
  • positioning part it is sufficient if it is provided as an area
  • each component of an impact tool is rationally arrange
  • the hammer drill 100 is composed mainly of a main body 101 as a tool main body that forms the outline of the hammer drill 100.
  • 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.
  • the side on which the hammer bit 119 is mounted (left side in FIG. 1) is referred to as the front side of the hammer drill 100, and the side on which the handgrip 107 is disposed (right side in FIG. 1) is referred to as the rear side of the hammer drill 100.
  • the main body 101 is composed of 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 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.
  • 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 composed of 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.
  • 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.
  • 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 configured by a second intermediate shaft 151, a second drive gear 155, and an urging spring 157.
  • the second intermediate shaft 151 is coaxially disposed and connected to the first intermediate shaft 123 and rotates 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. Further, the second drive gear 155 can engage with a convex portion 159 a formed on the outer peripheral surface of the tool holder 159.
  • 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.
  • a battery attachment portion arrangement region 170 for arranging the battery attachment portion 171 is provided in the lower region of the handgrip 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.
  • 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. .
  • the controller arrangement area 160 is provided between the battery mounting unit 170 and the motion conversion mechanism 120.
  • 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.
  • the large capacity battery 180 can supply a voltage of 36V
  • the small capacity battery 181 can supply a voltage of 18V.
  • 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.
  • 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 may be 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
  • the hammer drill 100 described above 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.
  • 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 drive motor 110 is disposed on the tip region side of the hammer drill 100.
  • the gravity center of the hammer drill 100 is set so as to be close to the tip region. 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.
  • 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 is set as, for example, a controller arrangement area 160 or a battery mounting part arrangement area 170. Thereby, the controller 161 and the battery mounting part 171 are rationally arranged.
  • 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 is rationally arranged without increasing the hammer drill 100.
  • 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.
  • the hammer drill 100 in the long axis direction of the hammer bits 119 is used. Increase in size is suppressed.
  • 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 rotates 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.
  • 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. Therefore, the first intermediate shaft 225 is provided as a crankshaft.
  • 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.
  • 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 arranged to engage with the motor shaft gear 212 and rotates 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.
  • the engagement between the second bevel gear 257 and the cam surface of the cam member 259 is released as in the first embodiment.
  • 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.
  • 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.
  • the second intermediate shaft 251 is an implementation configuration example corresponding to the “intermediate shaft” in the present invention.
  • 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.
  • 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. Accordingly, the center of gravity of the hammer drill 100 is set so as to be closer to the tip region.
  • 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.
  • 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.
  • the battery mounting unit 171 may be configured so that only the large-capacity battery 180 is mounted.
  • 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.
  • the battery mounting portion placement area 170 is configured to be provided with the battery mounting portion 171 to which the batteries 180 and 181 are attached.
  • the present invention is not limited to this.
  • 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 in the battery mounting portion arrangement region 170.
  • 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.
  • the controller 161 is arranged in the controller arrangement area 160.
  • 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.
  • a hammer drill is used as an example of the impact tool, but the present invention is not limited to this.
  • the present invention can be applied to an electric hammer that does not have a rotation transmission mechanism.
  • the impact tool according to the present invention can be configured in the following manner.
  • Each aspect is used not only alone or in combination with each other, but also in combination with the invention described in the claims.
  • the impact tool characterized in that the battery mounting part is configured to be mounted by sliding the battery in a direction intersecting both the long axis and the extending axis in which the handle extends. .
  • 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.
  • the intermediate shaft of the rotation transmission mechanism is arranged in parallel with the rotation shaft of the crank mechanism.
  • the striking tool wherein the intermediate shaft of the rotation transmission mechanism is disposed closer to the tip region than the rotation shaft of the crank mechanism.
  • 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 placement area 170 is an example of a configuration corresponding to the “battery mounting portion placement 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

[Problem] To provide an improved technique pertaining to the rational placement of constituent elements of an impact tool. [Solution] There is provided a hammer drill (100) for driving a hammer bit (119) detachably mounted on the distal end region of a main body part (101). 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 linear motion in the long-axis direction of the hammer bit (119). The driving motor (110) is disposed further toward the distal end region than a rotation body (124), which represents the pivot of a swinging member (125), so that the motor shaft (111) extends in an intersecting direction which intersects the long-axis direction of the hammer bit (119).

Description

打撃工具Impact tool
　本発明は、被加工材に所定の加工作業を行う打撃工具に関する。 The present invention relates to an impact tool for performing a predetermined processing operation on a workpiece.
　特開２０１１－０８８２３３号公報には、揺動リングを有する運動変換機構を備えたハンマドリルが開示されている。当該ハンマドリルは、ハンマビットの長軸方向に交差する駆動モータの出力軸が揺動リングよりもハンドグリップ側に配置されている。 Japanese Unexamined Patent Application Publication No. 2011-088233 discloses a hammer drill having 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.
　上記のハンマドリルは、駆動モータが揺動リングよりも後方側に配置されているため、ハンマビットの長軸方向に関するハンマドリルの長さが長くなる。換言すれば、打撃工具の各構成要素の配置に関してさらなる改良の余地がある。 In the above hammer drill, 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.
　そこで、本発明は、上記に鑑みてなされたものであり、打撃工具の各構成要素の合理的な配置に関する改良技術を提供することを目的とする。 Therefore, the present invention has been made in view of the above, and an object thereof is to provide an improved technique related to the rational arrangement of each component of the impact tool.
　上記課題は、本発明によって解決される。本発明に係る打撃工具の好ましい形態によれば、工具本体の先端領域に取り外し可能に取り付けられた先端工具を駆動させる打撃工具が構成される。当該打撃工具は、先端工具を駆動するためのモータと、揺動部材を備えるとともに、当該揺動部材によってモータの回転運動を先端工具の長軸方向への直線運動に変換する運動変換機構と、を有する。そして、モータは、モータの回転軸が先端工具の長軸方向に交差する交差方向に延在するように、揺動部材の支点よりも先端領域側に配置されている。 The above problem is solved by the present invention. According to the preferable form of the impact tool which concerns on this invention, the impact tool which drives the tip tool removably attached to the front-end | tip area | region of the tool main body is comprised. The impact tool includes a motor for driving the tip tool and a swing member, and a motion conversion mechanism that converts the rotational motion of the motor into a linear motion in the major 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.
　本発明によれば、モータの回転軸が揺動部材の支点よりも先端領域側に配置されるため、モータの回転軸が揺動部材の支点よりも後方に配置される構成に比べて、打撃工具の重心が先端領域側に設定される。したがって、打撃工具の各構成要素が合理的に配置される。また、打撃工具の重心を先端領域側に設定することで、被加工材の加工作業中において、被加工材に当接する先端工具の先端を中心とした打撃工具に生じる慣性モーメントが低減される。 According to the present invention, since the rotation shaft of the motor is disposed on the distal end region side with respect to the fulcrum of the swinging member, compared with the configuration in which the rotation shaft of the motor is disposed behind the fulcrum of the swinging member. The center of gravity of the tool is set on the tip region side. Therefore, each component of the impact tool is reasonably arranged. In addition, by setting the center of gravity of the impact tool to the tip region side, the moment of inertia generated in the impact tool centered on the tip of the tip tool that contacts the workpiece during processing of the workpiece is reduced.
　本発明に係る別の打撃工具の好ましい形態によれば、工具本体の先端領域に取り外し可能に取り付けられた先端工具を駆動させる打撃工具が構成される。当該打撃工具は、先端工具を駆動するためのモータと、クランク機構を備えるとともに、当該クランク機構によってモータの回転運動を先端工具の長軸方向への直線運動に変換する運動変換機構と、モータによって駆動される中間軸を有するとともに当該中間軸の回転運動を伝達することで先端工具を当該先端工具の長軸周りに回転させる回転伝達機構と、を有する。そして、モータは、モータの回転軸が長軸方向に交差する交差方向に延在するように、クランク機構の回転軸および回転伝達機構の中間軸よりも先端領域側に配置されている。 According to a preferred form of another 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, a crank mechanism, 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, and a motor. And 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 of a crank mechanism, and the intermediate shaft of a rotation transmission 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.
　本発明によれば、モータの回転軸がクランク機構の回転軸および中間軸よりも先端領域側に配置されるため、モータの回転軸がクランク機構の回転軸および中間軸よりも後方に配置される構成に比べて、打撃工具の重心が先端領域側に設定される。したがって、打撃工具の各構成要素が合理的に配置される。また、打撃工具の重心を先端領域側に設定することで、被加工材の加工作業中において、被加工材に当接する先端工具の先端を中心とした打撃工具に生じる慣性モーメントが低減される。 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 is set on the tip region side. Therefore, each component of the impact tool is reasonably arranged. In addition, by setting the center of gravity of the impact tool to the tip region side, the moment of inertia generated in the impact tool centered on the tip of the tip tool that contacts the workpiece during processing of the workpiece is reduced.
　本発明に係る打撃工具の更なる形態によれば、作業者に把持されるハンドルを有する。そして、ハンドルは、長軸方向に関する工具本体の先端領域とは反対側において、先端工具の長軸線上に配置されている。この場合、ハンドルの少なくとも一部が先端工具の長軸線上に配置されていればよい。 According to a further aspect of the impact tool according to the present invention, the impact tool has a handle that is gripped 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.
　本形態によれば、ハンドルが先端工具の長軸線上に配置されているため、作業者がハンドルに対して加えた力が効率よく先端工具に伝達される。これにより、被加工材の加工作業が効率よく遂行される。 According to this embodiment, since the handle is arranged 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.
　本発明に係る打撃工具の更なる形態によれば、モータに電流を供給するバッテリが取り外し可能に装着されるバッテリ装着部と、長軸方向に関するモータの先端領域とは反対側の領域であって、交差方向に関するハンドルの端部の領域に設けられたバッテリ装着部配置部と、を有する。そして、バッテリ装着部は、バッテリ装着部配置部に配置されている。さらに好ましくは、バッテリ装着部配置部は、先端工具の長軸線に対してモータが配置された側と同じ側に設けられている。すなわち、先端工具の長軸線に対して、モータとバッテリ装着部配置部が打撃工具の下方側に設けられている。 According to the further form of the impact tool according to the present invention, the battery mounting portion to which the battery for supplying current to the motor is detachably mounted, and the region on the opposite side to 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. More preferably, the battery mounting portion arrangement portion is provided on the same side as the side where the motor is arranged with respect to the long axis of the tip tool. That is, the motor and the battery mounting portion arrangement portion are provided on the lower side of the impact tool with respect to the long axis of the tip tool.
　本形態によれば、モータの回転軸を先端工具が装着される先端領域に近づくように配置することで、モータの先端領域とは反対側の後方領域に打撃工具の構成要素を配置するために比較的大きな領域が形成される。すなわち、モータを先端領域に近接するように配置されたことによって形成されたモータ後方の領域に、バッテリ装着部配置部が形成される。したがって、バッテリ装着部配置部にバッテリ装着部を配置することで、打撃工具の構成要素が合理的に配置される。これにより、バッテリ装着部に大容量のバッテリを装着可能に構成された場合であっても、打撃工具の大型化が抑制される。 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 is formed. That is, the battery mounting portion arrangement portion is formed in a region behind the motor formed by arranging the motor so as to be close to the tip region. Therefore, the components of the impact tool are rationally arranged by arranging the battery mounting portion in the battery mounting portion arrangement portion. Thereby, 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 an impact tool is suppressed.
　本発明に係る打撃工具の更なる形態によれば、バッテリ装着部には、複数のバッテリが取り外し可能に装着されるように構成されている。ここで、複数のバッテリとは、典型的には、打撃工具の加工作業時に同時に使用される複数のバッテリを意味する。なお、バッテリ装着部は、単一のバッテリが装着可能に構成されているだけでなく、複数種類のバッテリが装着可能に構成されていてもよい。典型的には、複数種類のバッテリが装着可能とは、大型バッテリと小型バッテリが装着可能である。大型バッテリと小型バッテリの違いは、バッテリの大きさ（形状）、およびバッテリ容量を意味する。なお、さらに好ましくは、バッテリ装着部には、先端工具の長軸線とハンドルが延在する延在軸線の両方に交差する方向にバッテリが摺動されて装着される。 According to the further form of the impact tool according to the present invention, the battery mounting portion is configured such that a plurality of batteries are detachably mounted. 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 not only to be able to mount a single battery but also to be able to mount a plurality of types of batteries. Typically, the fact that a plurality of types of batteries can be attached means that a large battery and a small battery can be attached. The difference between a large battery and a small battery means the size (shape) of the battery and the battery capacity. More preferably, the battery is slid and mounted on the battery mounting portion in a direction intersecting both the long axis of the tip tool and the extending axis extending from the handle.
　本形態によれば、モータの回転軸を工具本体の先端領域に近接して配置することで形成されたモータ後方の比較的大きな領域にバッテリ装着部が配置されている。したがって、複数のバッテリがバッテリ装着部に対して装着可能であっても、打撃工具の大型化が抑制される。 According to this embodiment, the battery mounting portion is arranged in a relatively large area behind the motor formed by arranging the rotating shaft of the motor close to the tip area of the tool body. Therefore, even if a plurality of batteries can be mounted on the battery mounting portion, an increase in the size of the impact tool is suppressed.
　本発明に係る打撃工具の更なる形態によれば、バッテリ装着部は、複数のバッテリが先端工具の長軸方向に平行な方向に並んで装着可能に構成されている。 According to the further form of the impact tool according to the present invention, the battery mounting portion is configured such that a plurality of batteries can be mounted side by side in a direction parallel to the longitudinal direction of the tip tool.
　一般的に、打撃工具に装着されるバッテリは、長軸と短軸を有する形状（例えば、直方体形状）に形成される。したがって、本形態において、バッテリの長軸方向が先端工具の長軸方向と平行になるように、複数のバッテリがバッテリ装着部に装着される場合には、先端工具の長軸方向に直交する方向に関する打撃工具の大型化が抑制される。一方、本形態において、バッテリの長軸方向が先端工具の長軸方向と直交するように、複数のバッテリがバッテリ装着部に装着される場合には、先端工具の長軸方向に関する打撃工具の大型化が抑制される。すなわち、装着されたバッテリの短軸方向に関する打撃工具の大型化が抑制される。 Generally, a battery attached to the impact tool is formed in a shape having a major axis and a minor axis (for example, a rectangular parallelepiped shape). Therefore, in this embodiment, when 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 direction orthogonal to the long axis direction of the tip tool An increase in the size of the impact tool is suppressed. On the other hand, in this embodiment, when 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, the large size of the impact tool in the long axis direction of the tip tool Is suppressed. That is, an increase in the size of the impact tool in the minor axis direction of the mounted battery is suppressed.
　本発明に係る打撃工具の更なる形態によれば、打撃工具を制御する制御装置と、長軸方向に関してモータの先端領域とは反対側であって、モータの回転軸が延在する先端工具の長軸方向に交差する交差方向に関してバッテリ装着部配置部と運動変換機構の間に設けられた制御装置配置部と、を有する。そして、制御装置は、制御装置配置部に配置されている。典型的には、制御装置は、モータの駆動を制御する。 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. Typically, the control device controls the driving of the motor.
　本形態によれば、モータの回転軸を工具本体の先端領域に近接するように配置することで形成されたモータ後方の比較的大きな領域に、さらに制御装置配置部が配置される。なお、制御装置配置部としては、打撃工具を制御するための部材が配置可能な領域として設けられていれば足りる。そして、この制御装置配置部に制御装置を配置することで、打撃工具の各構成要素が合理的に配置される。その結果、打撃工具の大型化が抑制される。 According to this embodiment, the control device disposition unit is further disposed in a relatively large region behind the motor formed by disposing the rotation shaft of the motor so as to be close to the tip region of the tool body. 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 is rationally arrange | positioned by arrange | positioning a control apparatus to this control apparatus arrangement | positioning part. As a result, an increase in the size of the impact tool is suppressed.
　本発明によれば、打撃工具の各構成要素の合理的な配置に関する改良技術が提供される。
　本発明の他の特質、作用および効果については、本明細書、特許請求の範囲、添付図面を参照することで直ちに理解可能である。 According to the present invention, an improved technique relating to the rational arrangement of each component of the impact tool is provided.
Other features, actions, and advantages of the present invention can be readily understood with reference to the specification, claims, and accompanying drawings.
第１実施形態に係るハンマドリルの全体構成を示す断面図である。It is sectional drawing which shows the whole structure of the hammer drill which concerns on 1st Embodiment. 図１のハンマドリルに２つのバッテリが装着された状態を示す断面図である。It is sectional drawing which shows the state with which two batteries were mounted | worn with the hammer drill of FIG. 第２実施形態に係るハンマドリルの全体構成を示す断面図である。It is sectional drawing which shows the whole structure of the hammer drill which concerns on 2nd Embodiment. 図２のハンマドリルに２つのバッテリが装着された状態を示す断面図である。It is sectional drawing which shows the state with which two batteries were mounted | worn with the hammer drill of FIG.
　以上および以下の記載に係る構成ないし方法は、本発明にかかる「打撃工具」の製造および使用、当該「打撃工具」の構成要素の使用を実現せしめるべく、他の構成ないし方法と別に、あるいはこれらと組み合わせて用いることができる。本発明の代表的実施形態は、これらの組み合わせも包含し、添付図面を参照しつつ詳細に説明される。以下の詳細な説明は、本発明の好ましい適用例を実施するための詳細情報を当業者に教示するに留まり、本発明の技術的範囲は、当該詳細な説明によって制限されず、特許請求の範囲の記載に基づいて定められる。このため、以下の詳細な説明における構成や方法ステップの組み合わせは、広義の意味において、本発明を実施するのに全て必須であるというものではなく、添付図面の参照番号とともに記載された詳細な説明において、本発明の代表的形態を開示するに留まるものである。
（第１実施形態）
　第１実施形態について、図１、図２を参照して説明する。第１実施形態は、打撃工具の一例として電動式のハンマドリルを用いて説明する。図１に示すように、ハンマドリル１００は、ハンマドリル１００の外郭を形成する工具本体としての本体部１０１を主体として構成される。本体部１０１の先端領域（図１左側）には、ハンマビット１１９が筒状のツールホルダ１５９を介して着脱自在に取り付けられる。ハンマビット１１９は、ツールホルダ１５９に対して軸方向には相対移動可能に、周方向には一体に回転するように装着される。本体部１０１の先端領域の反対側には、作業者が握るハンドグリップ１０７が連接されている。ハンマビット１１９は、本発明における「先端工具」に対応する実施構成例である。なお、説明の便宜上、ハンマビット１１９が装着される側（図１の左側）をハンマドリル１００の前側、ハンドグリップ１０７が配置される側（図１の右側）をハンマドリル１００の後側と称す。 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)
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 an impact tool. As shown in FIG. 1, the hammer drill 100 is composed mainly of a main body 101 as a tool main body that forms the outline of the hammer drill 100. 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 side on which the hammer bit 119 is mounted (left side in FIG. 1) is referred to as the front side of the hammer drill 100, and the side on which the handgrip 107 is disposed (right side in FIG. 1) is referred to as the rear side of the hammer drill 100.
　本体部１０１は、駆動モータ１１０とギアハウジング１０５を収容した本体ハウジング１０３によって構成されている。ギアハウジング１０５は、運動変換機構１２０、打撃要素１４０及び回転伝達機構１５０を収容している。駆動モータ１１０は、モータ軸１１１がハンマビット１１９の長軸方向と概ね直交する縦方向（図１の上下方向）に延在するように配置されている。モータ軸１１１には、第１ベベルギア１１２が取り付けられている。モータ軸１１１の回転運動は、運動変換機構１２０によって直線運動に変換された上で打撃要素１４０に伝達され、打撃要素１４０を介してハンマビット１１９の長軸方向への衝撃力を発生する。この駆動モータ１１０およびモータ軸１１１が、本発明における「モータ」、「回転軸」にそれぞれ対応する実施構成例である。 The main body 101 is composed of 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 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.
　また、モータ軸１１１の回転は、回転伝達機構１５０によって減速されてツールホルダ１５９を介してハンマビット１１９に伝達される。これにより、ハンマビット１１９が長軸周りの周方向に回転動作される。なお、駆動モータ１１０は、ハンドグリップ１０７に配置されたトリガ１０７ａの引き操作によって通電されて駆動される。 Also, 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.
　運動変換機構１２０は、第２ベベルギア１２１、第１中間軸１２３、揺動部材１２５、およびシリンダ１２７を主体として構成されている。第２ベベルギア１２１は第１中間軸１２３に連結されており、第１ベベルギア１１２と係合して回転することで、第１中間軸１２３を回転させる。第１中間軸１２３には、第１中間軸１２３と一体に回転するように回転体１２４が取り付けられている。さらに、回転体１２４の外側には、揺動部材１２５が配置されており、揺動部材１２５は回転体１２４の回転に伴ってハンマドリル１００の前後方向に揺動される。この揺動部材１２５および回転体１２４が、本発明における「揺動部材」、「揺動部材の支点」にそれぞれ対応する実施構成例である。 The motion conversion mechanism 120 is mainly composed of 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.
　揺動部材１２５の先端部には、前方が開放されたシリンダ１２７が連結されている。シリンダ１２７は、ツールホルダ１５９の内部を摺動可能に配置されている。すなわち、シリンダ１２７は揺動部材１２５の移動に伴ってハンマドリル１００の前後方向に往復移動する。これにより、駆動モータ１１０の回転運動がハンマビット１１９の長軸方向への直線運動に変換される。この運動変換機構１２０は、駆動モータ１１０よりもハンドグリップ１０７側（ハンマドリル１００の後側）に配置されている。すなわち、駆動モータ１１０のモータ軸１１１は、運動変換機構１２０の構成要素のうち揺動部材１２５の支点を構成する回転体１２４よりもハンマビット１１９側（ハンマドリル１１０の前側）に配置されている。 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.
　打撃要素１４０は、ストライカ１４３およびインパクトボルト１４５を主体として構成されている。ストライカ１４３は、シリンダ１２７内に摺動可能に配置されている。インパクトポルト１４５は、ツールホルダ１５９内に摺動可能に配置されるとともに、ストライカ１４３の運動エネルギをハンマビット１１９に伝達する中間子として構成されている。ストライカ１４３後方のシリンダ１２７内部には、空気室１２８が形成されている。すなわち、ストライカ１４３は、シリンダ１２７の移動に基づく空気室１２８の圧力変動によって駆動されて、インパクトボルト１４５に衝突する。これにより、インパクトボルト１４５がハンマビット１１９に衝突し、ハンマビット１１９の長軸方向の打撃力を発生させる。 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.
　回転伝達機構１５０は、第２中間軸１５１、第２駆動ギア１５５、および付勢バネ１５７を主体として構成されている。第２中間軸１５１は、第１中間軸１２３と同軸状に配置されて連結されており、第２ベベルギア１２１と一体に回転する。また、第２中間軸１５１の外周面には、第１駆動ギア１５３が固定状に取り付けられている。第２駆動ギア１５５は、ツールホルダ１５９の外周面に、ツールホルダ１５９の長軸方向に摺動可能に配置されている。この第２駆動ギア１５５は、第１駆動ギア１５３と係合するように配置されている。また、第２駆動ギア１５５は、ツールホルダ１５９の外周面に形成された凸部１５９ａと係合可能である。すなわち、第２駆動ギア１５５と凸部１５９ａにはカム面が形成されている。さらに、第２駆動ギア１５５は、付勢バネ１５７によって凸部１５９ａに向かって付勢されており、カム面が当接することで第２駆動ギア１５５と凸部１５９ａが互いに係合している。そして、第２駆動ギア１５５が凸部１５９ａと係合することで、第１駆動ギア１５３によって回転された第２駆動ギア１５５がツールホルダ１５９を回転させる。これにより、ハンマビット１１９が長軸周りに回転駆動される。 The rotation transmission mechanism 150 is mainly configured by a second intermediate shaft 151, a second drive gear 155, and an urging spring 157. The second intermediate shaft 151 is coaxially disposed and connected to the first intermediate shaft 123 and rotates 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. Further, the second drive gear 155 can engage 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.
　また、図１に示すように、ハンドグリップ１０７の下部領域には、バッテリ装着部１７１を配置するためのバッテリ装着部配置領域１７０が設けられている。このバッテリ装着部配置領域１７０は、ハンマビット１１９の長軸方向に関して、駆動モータ１１０の後方に設けられている。このバッテリ装着部配置領域１７０には、バッテリ１８０が取り外し可能に装着されるバッテリ装着部１７１が配置されている。このバッテリ装着部配置領域１７０およびバッテリ装着部１７１が、本発明における「バッテリ装着部配置部」、「バッテリ装着部」にそれぞれ対応する実施構成例である。 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 handgrip 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.
　さらに、駆動モータ１１０とハンドグリップ１０７の間であってバッテリ装着部配置領域１７０の上部領域には、駆動モータ１１０を制御するためのコントローラ１６１を配置するためのコントローラ配置領域１６０が設けられている。換言すると、コントローラ配置領域１６０は、バッテリ装着部１７０と運動変換機構１２０の間に設けられている。このコントローラ配置領域１６０には、コントローラ１６１が配置されておりバッテリ装着部１７０に形成された端子と電気的に接続されている。これにより、バッテリ装着部１７０に装着されたバッテリ１８０からコントローラ１６１に電流が供給される。このコントローラ配置領域１６０およびコントローラ１６１が、本発明における「制御装置配置部」、「制御装置」にそれぞれ対応する実施構成例である。 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.
　なお、バッテリ装着部１７１には、図１に示すように大容量のバッテリ１８０が装着されるだけでなく、図２に示すように複数の小容量のバッテリ１８１がハンマビット１１９の長軸方向に並んで装着されるように構成されている。すなわち、作業者は、大容量バッテリ１８０と小容量バッテリ１８１をバッテリ装着部１７１に対して選択的に装着可能である。例えば、大容量バッテリ１８０としては３６Ｖの電圧を供給可能であり、小容量バッテリ１８１としては１８Ｖの電圧が供給可能である。なお、図２においては２つのバッテリ１８１は、電気的に直列に接続されて３６Ｖの電圧をコントローラ１６１に供給してもよく、電気的に並列に接続されて１８Ｖの電圧をコントローラ１６１に供給してもよい。また、複数のバッテリの接続を直列と並列の間で切り替えるように構成されていてもよい。 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, 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.
　なお、バッテリ装着部１７１に対するバッテリ１８０，１８１の装着方向は、ハンマビット１１９の長軸方向と平行な方向であってもよく、ハンマビット１１９の長軸方向に交差する方向であってもよい。また、バッテリ１８０とバッテリ１８１の装着方向が互いに異なるように構成されていてもよい。また、バッテリ装着部１７１は、３つ以上のバッテリが装着可能に構成されていてもよい。 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 may be 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.
　以上のハンマドリル１００は、駆動モータ１１０が駆動されると、運動変換機構１２０および打撃要素１４０を介してハンマビット１１９に打撃力を発生させるとともに、回転伝達機構１５０を介してハンマビット１１９を長軸周りに回転させる。これにより、被加工材に対してハンマドリル作業を行う。 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.
　ハンマドリル作業中にハンマビット１１９が被加工材に捕捉されると、ハンマビット１１９の回転が停止されるが、駆動モータ１１０は回転し続ける。これにより、付勢バネ１５７の付勢力に抗して第２駆動ギア１５５がハンマドリル１００の前方に移動し、第２駆動ギア１１５と凸部１５９ａのカム面の係合が解除される。すなわち、第２駆動ギア１５５、付勢バネ１５７およびツールホルダ１５９の凸部１５９ａが過負荷クラッチを形成している。 When the hammer bit 119 is captured by the workpiece during the hammer drill 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.
　以上の第１実施形態によれば、モータ軸１１１が、運動変換機構１２０のうちの揺動部材１２５の支点を形成する回転体１２４よりも前側（ハンマドリル１００の先端領域に近い側）に配置される。すなわち、駆動モータ１１０がハンマドリル１００の先端領域側に配置される。これにより、ハンマドリル１００の重心が先端領域に近接するように設定される。したがって、被加工材の加工作業において、ハンマビット１１９が当接する被加工材を中心としたハンマドリル１００に生じる慣性モーメントを小さくすることができる。 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 gravity center of the hammer drill 100 is set so as to be close to the tip region. 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.
　また、第１実施形態によれば、駆動モータ１１０がハンマドリル１００の先端領域側に配置されるため、駆動モータ１１０の後側にハンマドリル１００の各構成要素を配置するための比較的大きな領域が形成される。この比較的大きな領域が、例えば、コントローラ配置領域１６０やバッテリ装着部配置領域１７０として設定される。これにより、コントローラ１６１やバッテリ装着部１７１が合理的に配置される。 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 is set as, for example, a controller arrangement area 160 or a battery mounting part arrangement area 170. Thereby, the controller 161 and the battery mounting part 171 are rationally arranged.
　さらに、比較的大きな領域をバッテリ装着部配置領域１７０として設定することで、バッテリ装着部配置領域１７０に配置されるバッテリ装着部１７１に大容量バッテリ１８０が装着される場合であっても、ハンマビット１１９の長軸方向に関するハンマドリル１００の大型化が抑制される。すなわち、ハンマドリル１００を大きくすることなく、各構成要素が合理的に配置される。 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 is rationally arranged without increasing the hammer drill 100.
　また、バッテリ装着部１７１に複数の小容量バッテリ１８１が装着される場合であっても、ハンマビット１１９の長軸方向に関するハンマドリル１００の大型化が抑制される。一般的に、バッテリは、長軸と短軸を有する略直方体形状に形成される。そのため、複数のバッテリ１８１の長軸がハンマビット１１９の長軸方向と平行になるように、複数のバッテリ１８１がバッテリ装着部１７１に装着される場合には、ハンマビット１１９の長軸方向に交差する方向に関するハンマドリル１００の大型化が抑制される。一方、複数のバッテリ１８１の長軸がハンマビット１１９の長軸方向と交差するように、複数のバッテリ１８１がバッテリ装着部１７１に装着される場合には、ハンマビット１１９の長軸方向に関するハンマドリル１００の大型化が抑制される。 Further, even when a plurality of small-capacity batteries 181 are mounted on the battery mounting portion 171, an increase in 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.
（第２実施形態）
　次に、第２実施形態について、図３、図４を参照して説明する。第２実施形態におけるハンマドリル１００は、第１実施形態のハンマドリル１００に対して、運動変換機構２２０および回転伝達機構２５０が異なる。運動変換機構２２０および回転伝達機構２５０以外の構成については、第１実施形態のハンマドリル１００と概ね同様の構成であり、同じ符号を付して説明を省略する。 (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.
　駆動モータ１１０のモータ軸１１１の先端部には、モータ軸ギア２１２がモータ軸１１１と一体に回転するように取り付けられている。 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.
　運動変換機構２２０は、第１駆動ギア２２３、第１中間軸２２５、偏心軸２２７、連接ロッド２２９およびピストン２３１を主体として構成されている。第１駆動ギア２２３は、第２駆動ギア２５３と係合するように配置されており、第１中間軸２２５と一体に回転する。第１中間軸２２５の先端部には、第１中間軸２２５の軸線からずれた位置に偏心軸２２７が設けられている。連接ロッド２２９は、偏心軸２２７とピストン２３１を連結するように設けられている。ピストン２３１は、ツールホルダ１５９に摺動可能にツールホルダ１５９の内側に配置されている。これにより、ピストン２３１は、ハンマビット１１９の長軸方向に直線移動される。すなわち、運動変換機構２２０は、第２駆動ギア２５３を介して第１駆動ギア２２３に伝達された駆動モータ１１０の回転運動をハンマビット１１９の長軸方向の直線運動に変換するクランク機構として構成されている。したがって、第１中間軸２２５がクランク軸として設けられている。ピストン２３１の前方であって、打撃要素１４０のストライカ１４３の後方の空間は、ツールホルダ１５９内に形成された空気室２３３として構成されている。この運動変換機構２２０は、駆動モータ１１０よりもハンドグリップ１０７側（ハンマドリル１００の後側）に配置されている。すなわち、駆動モータ１１０のモータ軸１１１は、運動変換機構２２０の構成要素のうちクランク機構の回転軸である第１中間軸２２５よりもハンマビット１１９側（ハンマドリル１１０の前側）に配置されている。この第１中間軸２２５が、本発明における「クランク機構の回転軸」に対応する実施構成例である。 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 rotates 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. Therefore, the first intermediate shaft 225 is provided as a crankshaft. 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.
　回転伝達機構２５０は、第２中間軸２５１、第２駆動ギア２５３、第１ベベルギア２５５、第２ベベルギア２５７、カム部材２５９および付勢バネ２６１を主体として構成されている。第２駆動ギア２５３は、モータ軸ギア２１２と係合するように配置されており、第２中間軸２５１と一体に回転する。第２中間軸２５１の先端部には、第１ベベルギア２５５が取り付けられている。第２ベベルギア２５７は、第１ベベルギア２５５と係合するようにツールホルダ１５９の外周に、ツールホルダ１５９に対して相対回転可能に配置されている。第２ベベルギア２５７の前方には、カム部材２５９が配置されている。このカム部材２５９は、付勢バネ２６１によって第２ベベルギア２５７に向かって付勢されている。 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 arranged to engage with the motor shaft gear 212 and rotates 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.
　カム部材２５９は、ツールホルダ１５９のキー溝１５９ｂに係合して、ツールホルダ１５９と一体に回転するように構成されているとともに、ツールホルダ１５９に対してハンマビット１１９の長軸方向に摺動可能に構成されている。第２ベベルギア２５７とカム部材２５９にはカム面が形成されており、カム面が当接することで第２ベベルギア２５７とカム部材２５９が互いに係合する。そして、第２ベベルギア２５７がカム部材２５９と係合することで、第１ベベルギア２５５によって回転された第２ベベルギア２５７がカム部材２５９を介してツールホルダ１５９を回転させる。なお、ハンマドリル作業中にハンマビット１１９が被加工材に捕捉された場合は、第１実施形態と同様に第２ベベルギア２５７とカム部材２５９のカム面の係合が解除される。これにより、第２ベベルギア２５７、カム部材２５９、付勢バネ２６１およびツールホルダ１５９のキー溝１５９ｂが過負荷クラッチを形成している。このとき、駆動モータ１１０のモータ軸１１１は、回転伝達機構２５０の構成要素のうちモータ軸１１１の回転が伝達される第２中間軸２５１よりもハンマビット１１９側（ハンマドリル１１０の前側）に配置されている。この第２中間軸２５１が、本発明における「中間軸」に対応する実施構成例である。 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.
　なお、バッテリ装着部１７１には、第２実施形態においても第１実施形態と同様に、図３に示すように大容量のバッテリ１８０が装着されるだけでなく、図４に示すように複数の小容量のバッテリ１８１が装着されるように構成されている。 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.
　以上の通り、第２実施形態においては、駆動モータ１１０のモータ軸１１１は、第１中間軸２２５および第２中間軸２５１よりもハンマビット１１９側（ハンマドリル１１０の前側）に配置されている。これにより、ハンマドリル１００の重心がさらに先端領域に近接するように設定される。駆動モータ１１０をハンマドリル１００の先端領域側に配置することによる効果は第１実施形態と同様である。 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. Accordingly, the center of gravity of the hammer drill 100 is set so as to be closer to the tip region. 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.
　以上の第１および第２実施形態においては、バッテリ装着部１７１は、大容量バッテリ１８０と小容量バッテリ１８１が装着可能に構成されていたが、これには限られない。例えば、バッテリ装着部１７１は、大容量バッテリ１８０のみが装着されるように構成されていてもよい。また一方で、例えば、バッテリ装着部１７１は、大容量バッテリ１８０と複数の小容量バッテリ１８１が装着可能に構成されており、小容量バッテリ１８１が１つのみ装着されてハンマドリル１００が駆動可能に構成されていてもよい。 In the first and second embodiments described 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.
　また、以上においては、バッテリ装着部配置領域１７０には、バッテリ１８０，１８１が装着されるバッテリ装着部１７１が配置されるように構成されていたが、これには限られない。例えば、バッテリ装着部配置領域１７０には、モータおよびファンを備えた集塵装置や、粉塵を一時的に収容する粉塵収容装置等が取り外し可能に装着される付加装置装着部が配置されるように構成されていてもよい。すなわち、バッテリ装着部配置領域１７０としては、ハンマドリル１００が駆動される際に用いられる装置が装着される装着部が配置可能に構成されていればよい。なお、バッテリ装着部１７１は、バッテリ１８０，１８１が装着可能であるとともに、さらに上記付加装置が装着可能に構成されていてもよい。 In the above description, the battery mounting portion placement area 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.
　また、以上においては、コントローラ配置領域１６０には、コントローラ１６１が配置されるように構成されていたが、これには限られない。すなわち、コントローラ配置領域１６０として、ハンマドリル１００を制御するための装置が配置可能な領域として設けられていればよい。 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.
　また、以上においては、打撃工具の一例としてハンマドリルを用いて説明したが、これには限られない。例えば、回転伝達機構を有さない電動ハンマに本発明を適用することも可能である。 In the above description, a hammer drill is used as an example of the impact tool, but the present invention is not limited to this. For example, the present invention can be applied to an electric hammer that does not have a rotation transmission mechanism.
　上記発明の趣旨に鑑み、本発明に係る打撃工具は、下記の態様が構成可能である。なお、各態様は、単独で、あるいは互いに組み合わされて用いられるだけでなく、請求項に記載された発明と組み合わされて用いられる。
（態様１）
　前記バッテリ装着部には、前記長軸線と前記ハンドルが延在する延在軸線の両方に交差する方向に前記バッテリが摺動されて装着されるように構成されていることを特徴とする打撃工具。
（態様２）
　前記バッテリ装着部配置部は、前記長軸線に関して前記モータが配置された側と同じ側に設けられていることを特徴とする打撃工具。
（態様３）
　前記回転伝達機構の前記中間軸は、前記クランク機構の回転軸と平行に配置されていることを特徴とする打撃工具。
（態様４）
　前記回転伝達機構の前記中間軸は、前記クランク機構の回転軸よりも前記先端領域側に配置されていることを特徴とする打撃工具。 In view of the gist of the above invention, the impact tool according to the present invention can be configured in the following manner. Each aspect is used not only alone or in combination with each other, but also in combination with the invention described in the claims.
(Aspect 1)
The impact tool characterized in that the battery mounting part is configured to be mounted by sliding the battery in a direction intersecting both the long axis and the extending axis in which the handle extends. .
(Aspect 2)
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.
(Aspect 3)
The impact tool according to claim 1, wherein the intermediate shaft of the rotation transmission mechanism is arranged in parallel with the rotation shaft of the crank mechanism.
(Aspect 4)
The striking tool, wherein the intermediate shaft of the rotation transmission mechanism is disposed closer to the tip region than the rotation shaft of the crank mechanism.
（本実施形態の各構成要素と本発明の各構成要素の対応関係）
　本実施形態の各構成要素と本発明の各構成要素の対応関係を以下の通り示す。なお、本実施形態は、本発明を実施するための形態の一例を示すものであり、本発明は、本実施形態の構成に限定されるものではない。
　ハンマドリル１００が、本発明の「打撃工具」に対応する構成の一例である。
　本体部１０１が、本発明の「工具本体」に対応する構成の一例である。
　ハンマビット１１９が、本発明の「先端工具」に対応する構成の一例である。
　駆動モータ１１０が、本発明の「モータ」に対応する構成の一例である。
　モータ軸１１１が、本発明の「回転軸」に対応する構成の一例である。
　運動変換機構１２０が、本発明の「運動変換機構」に対応する構成の一例である。
　揺動部材１２５が、本発明の「揺動部材」に対応する構成の一例である。
　回転体１２４が、本発明の「揺動部材の支点」に対応する構成の一例である。
　運動変換機構２２０が、本発明の「運動変換機構」に対応する構成の一例である。
　第１中間軸２２５が、本発明の「クランク機構の回転軸」に対応する構成の一例である。
　回転伝達機構２５０が、本発明の「回転伝達機構」に対応する構成の一例である。
　第２中間軸２５１が、本発明の「中間軸」に対応する構成の一例である。
　コントローラ配置領域１６０が、本発明の「制御装置配置部」に対応する構成の一例である。
　コントローラ１６１が、本発明の「制御装置」に対応する構成の一例である。
　バッテリ装着部配置領域１７０が、本発明の「バッテリ装着部配置部」に対応する構成の一例である。
　バッテリ装着部１７１が、本発明の「バッテリ装着部」に対応する構成の一例である。 (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 placement area 170 is an example of a configuration corresponding to the “battery mounting portion placement 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.
１００　ハンマドリル
１０１　本体部
１０３　本体ハウジング
１０５　ギアハウジング
１０７　ハンドグリップ
１０７ａ　トリガ
１１０　駆動モータ
１１１　モータ軸
１１２　第１ベベルギア
１１９　ハンマビット
１２０　運動変換機構
１２１　第２ベベルギア
１２３　第１中間軸
１２４　回転体
１２５　揺動部材
１２７　シリンダ
１２８　空気室
１４０　打撃要素
１４３　ストライカ
１４５　インパクトボルト
１５０　回転伝達機構
１５１　第２中間軸
１５３　第１駆動ギア
１５５　第２駆動ギア
１５７　付勢バネ
１５９　ツールホルダ
１５９ａ　凸部
１５９ｂ　キー溝
１６０　コントローラ配置領域
１６１　コントローラ
１７０　バッテリ装着部配置領域
１７１　バッテリ装着部
１８０　バッテリ
１８１　バッテリ
２１２　モータ軸ギア
２２０　運動変換機構
２２３　第１駆動ギア
２２５　第１中間軸
２２７　偏心軸
２２９　連接ロッド
２３１　ピストン
２３３　空気室
２５０　回転伝達機構
２５１　第２中間軸
２５３　第２駆動ギア
２５５　第１ベベルギア
２５７　第２ベベルギア
２５９　カム部材
２６１　付勢バネ 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 (9)

  1. 　工具本体の先端領域に取り外し可能に取り付けられた先端工具を駆動させる打撃工具であって、
    　前記先端工具を駆動するためのモータと、
    　揺動部材を備えるとともに、当該揺動部材によって前記モータの回転運動を前記先端工具の長軸方向への直線運動に変換する運動変換機構と、を有し、
    　前記モータは、前記モータの回転軸が前記長軸方向に交差する交差方向に延在するように、前記揺動部材の支点よりも前記先端領域側に配置されていることを特徴とする打撃工具。     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 converting mechanism that includes a swing member, and that converts the rotational motion of the motor into a linear motion in the major axis direction of the tip tool by the swing member;
    The impact tool characterized in that the motor is disposed 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 long axis direction. .
  2. 　工具本体の先端領域に取り外し可能に取り付けられた先端工具を駆動させる打撃工具であって、
    　前記先端工具を駆動するためのモータと、
    　クランク機構を備えるとともに、当該クランク機構によって前記モータの回転運動を前記先端工具の長軸方向への直線運動に変換する運動変換機構と、
    　前記モータによって駆動される中間軸を有するとともに当該中間軸の回転運動を伝達することで前記先端工具を当該先端工具の長軸周りに回転させる回転伝達機構と、を有し、
    　前記モータは、前記モータの回転軸が前記長軸方向に交差する交差方向に延在するように、前記クランク機構の回転軸および前記中間軸よりも前記先端領域側に配置されていることを特徴とする打撃工具。     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 includes a crank mechanism and converts the rotational motion of the motor into a linear motion in the long axis 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 arranged on the tip region side of the rotation axis of the crank mechanism and the intermediate shaft so that the rotation axis of the motor extends in a crossing direction intersecting the major axis direction. Blow tool.
  3. 　請求項１または２に記載の打撃工具であって、
    　作業者に把持されるハンドルを有し、
    　前記ハンドルは、前記長軸方向に関する前記工具本体の前記先端領域とは反対側において、前記先端工具の長軸線上に配置されていることを特徴とする打撃工具。     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 major axis direction.
  4. 　請求項３に記載の打撃工具であって、
    　前記モータに電流を供給するバッテリが取り外し可能に装着されるバッテリ装着部と、
    　前記長軸方向に関する前記モータの前記先端領域とは反対側の領域であって、前記交差方向に関する前記ハンドルの端部の領域に設けられたバッテリ装着部配置部と、を有し、
    　前記バッテリ装着部は、前記バッテリ装着部配置部に配置されていることを特徴とする打撃工具。     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.
  5. 　請求項４に記載の打撃工具であって、
    　前記バッテリ装着部には、複数のバッテリが取り外し可能に装着されるように構成されていることを特徴とする打撃工具。     The impact tool according to claim 4,
    A striking tool, wherein a plurality of batteries are detachably mounted on the battery mounting portion.
  6. 　請求項５に記載の打撃工具であって、
    　前記バッテリ装着部は、複数の前記バッテリが前記長軸方向に平行な方向に並んで装着可能に構成されていることを特徴とする打撃工具。     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.
  7. 　請求項４～６のいずれか１項に記載の打撃工具であって、
    　当該打撃工具を制御する制御装置と、
    　前記長軸方向に関して前記モータの前記先端領域とは反対側であって、前記交差方向に関して前記バッテリ装着部配置部と前記運動変換機構の間に設けられた制御装置配置部と、を有し、
    　前記制御装置は、前記制御装置配置部に配置されていることを特徴とする打撃工具。     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.
  8. 　請求項５～７のいずれか１項に記載の打撃工具であって、
    　前記バッテリ装着部には、前記長軸線と前記ハンドルが延在する延在軸線の両方に交差する方向に前記バッテリが摺動されて装着されるように構成されていることを特徴とする打撃工具。     The striking tool according to any one of claims 5 to 7,
    The impact tool characterized in that the battery mounting part is configured to be mounted by sliding the battery in a direction intersecting both the long axis and the extending axis in which the handle extends. .
  9. 　請求項４～８のいずれか１項に記載の打撃工具であって、
    　前記バッテリ装着部配置部は、前記長軸線に対して前記モータが配置された側と同じ側に設けられていることを特徴とする打撃工具。     The impact tool according to any one of claims 4 to 8,
    The impact tool according to claim 1, wherein the battery mounting portion placement portion is provided on the same side as the side on which the motor is placed with respect to the long axis.
PCT/JP2014/056299 2013-03-12 2014-03-11 Impact tool WO2014142112A1 (en)

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JP2013049024A JP2014172141A (en) 2013-03-12 2013-03-12 Hammer
JP2013-049024 2013-03-12

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JPH07299618A (en) * 1994-05-02 1995-11-14 Hilti Ag Drill / chisel device
WO2007077052A1 (en) * 2005-12-29 2007-07-12 Robert Bosch Gmbh Portable power tool, in particular a hammer drill and/or rotary hammer
JP2011161603A (en) * 2010-02-12 2011-08-25 Makita Corp Power tool using a plurality of battery packs as power source
JP2011526217A (en) * 2008-07-02 2011-10-06 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Electric machine tool

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JPS5575482U (en) * 1978-11-17 1980-05-24
US5028858A (en) * 1988-12-23 1991-07-02 Metabowerke Gmbh & Co. Cordless dual-battery electric tool
JPH07299618A (en) * 1994-05-02 1995-11-14 Hilti Ag Drill / chisel device
WO2007077052A1 (en) * 2005-12-29 2007-07-12 Robert Bosch Gmbh Portable power tool, in particular a hammer drill and/or rotary hammer
JP2011526217A (en) * 2008-07-02 2011-10-06 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Electric machine tool
JP2011161603A (en) * 2010-02-12 2011-08-25 Makita Corp Power tool using a plurality of battery packs as power source

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3517253A1 (en) * 2018-01-30 2019-07-31 Metabowerke GmbH Electric device and battery charger

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