JP2015150664A - Working tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve dustproof performance of a mounting portion to which an auxiliary machine is attached in a work tool. SOLUTION: A hammer drill 101 is driven by selecting a first drive mode that is driven when a dust collector 200 is attached and a second drive mode that is driven when a dust collector 200 is not attached. The hammer drill 101 has a female connector 154 having an opening 161 into which the male part of the dust collector 200 is inserted. The female connector 154 includes an opening sealing portion 167 that seals the opening 161. The opening sealing portion 167 includes a sealing position that seals the opening 161 and an open position that opens the opening 161. It is possible to move between. The sealing position is set as a position where the opening sealing portion 167 is flush with the opening edge of the opening 161 or a position protruding from the opening edge to the outside of the female connector 154. [Selection] FIG.

Description

  The present invention relates to a work tool to which an auxiliary machine is attached.

  Japanese Patent Application Laid-Open No. 2011-212833 describes a power tool with a dust collection attachment. This electric tool is driven together with a dust collection attachment. In other words, the driving of the electric power tool and the driving of the dust collection attachment are inseparably configured. The electric power tool includes a connector electrically connected to the dust collector, an insertion port for accessing a front connector of the connector, and a shutter unit that closes the insertion port. The shutter portion is rotatably supported with respect to the housing. When the dust collecting device is not attached, the connector is urged to rotate, and the shutter portion closes the insertion port.

JP 2011-212833 A

  However, in the above work tool, in a state where the shutter portion is rotated and disposed at a position where the insertion port is closed, a step is formed by the outer surface of the insertion port and the surface of the shutter portion, and dust is formed on the step. Are easy to accumulate. Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide an improved technique for improving the dustproof performance of a mounting portion to which an auxiliary machine is attached in a work tool.

  The above problems are solved by the present invention. According to the preferable form of the work tool which concerns on this invention, the work tool to which an auxiliary machine is detachably attached is comprised. The work tool is driven together with the accessory in the first drive mode in which the tip tool is driven with the accessory attached. This first drive mode is also called a main mode. Further, the work tool has a second drive mode in which the tip tool is further driven in a state where the auxiliary machine is removed from the work tool in the first drive mode. The work tool can be driven in both drive modes by selectively switching between the first drive mode and the second drive mode. Therefore, in the second drive mode, only the work tool is driven. This second drive mode is also referred to as a sub mode. Typically, the first drive mode and the second drive mode are selectively switched based on the attachment of the auxiliary machine by an operator's manual operation. Note that the work tool may include a detection unit that detects the auxiliary machine, and the first drive mode and the second drive mode may be switched based on the detection result of the detection unit. In addition, the auxiliary machine in this invention suitably contains the apparatus with which work tools, such as a dust collector, an illuminating device, a laser irradiator, and an information display apparatus, are mounted | worn.

  The work tool includes an opening having an opening into which a male part of an auxiliary machine is inserted, a female part engaged with the male part, a sealing position capable of sealing the opening of the female part, and the opening can be opened. And an opening sealing member movable between the open positions. Typically, the accessory has a convex part formed as a male part, the work tool has a concave part configured as an opening of the female part, the convex part and the concave part are engaged, and the convex part and the concave part are Electrically and / or mechanically connected. The opening includes a predetermined opening forming member and an opening formed in the opening forming member. Note that the number of openings is not limited to one, and a plurality of openings may be formed. The sealing position is set as a position where the opening sealing member is flush with the opening edge of the opening or a position protruding from the opening edge to the outside of the female portion. Specifically, the opening sealing member abuts on the opening edge on the outer surface of the opening to seal the opening. On the other hand, the open position is set as a position inside the female portion from the opening edge. In the first drive mode, the opening sealing member is located at the open position to open the opening, and the male part of the auxiliary machine is engaged with the female part through the opening. On the other hand, in the second drive mode, the opening sealing member is located at the sealing position and seals the opening.

  According to the present invention, the opening sealing member is disposed as a sealing position at a position that is flush with the opening edge of the opening or at a position that protrudes outside the knife from the opening edge. Temporarily, unlike the present invention, when the opening sealing member is disposed as a sealing position at a position inside the female part rather than the opening edge, a recess having the opening sealing member as a bottom is formed in the opening, Dust easily accumulates in the opening. However, since the sealing position in the present invention is a position that is flush with the opening edge of the opening or a position that protrudes to the outside of the female portion from the opening edge, a space in which dust or the like accumulates in the opening is not formed. Since dust does not accumulate in the opening, when the opening sealing member is disposed at the open position, it is possible to prevent dust from entering the inside of the work tool, in particular, the female portion through the opening.

  According to the further form of the working tool which concerns on this invention, while the female part is extended to the predetermined | prescribed axial direction which cross | intersects the plane formed by an opening edge part, the female which engages with the male terminal of a male part Has a type terminal. In other words, the female terminal extends from the opening side to the inside of the female portion with respect to a predetermined axial direction. In the first drive mode, the male terminal and the female terminal are electrically connected by engaging the male terminal and the female terminal. That is, the female terminal has a metal terminal and is connected to a metal male terminal.

  According to this embodiment, since the male terminal and the female terminal are electrically connected, the work tool and the auxiliary machine are electrically connected. As a result, power can be supplied from the work tool to the auxiliary machine. Therefore, the auxiliary machine is driven in a state of being held integrally with the work tool.

  According to the further form of the working tool which concerns on this invention, an opening sealing member is movable to both directions of the cross direction which cross | intersects an axial direction and an axial direction with respect to an opening part. Preferably, the opening sealing member moves simultaneously in both the axial direction and the crossing direction with respect to the opening. That is, it is preferable that the opening sealing member moves in an inclined direction inclined in the axial direction. On the other hand, the movement of the opening sealing member in the axial direction and the movement in the crossing direction may be performed independently.

  According to this embodiment, the opening sealing member is moved in both the axial direction and the intersecting direction. Therefore, when the male part is inserted into the opening and the movement of the opening sealing member in the axial direction for sealing the opening and opening the opening, and in the crossing direction so as not to hinder the entry of the male part The movement of the opening sealing member is rationally performed. In particular, when the opening sealing member is moved simultaneously in both the axial direction and the crossing direction, the movement of the opening sealing member (movement in the tilt direction) is achieved more rationally and efficiently. .

  According to the further form of the work tool which concerns on this invention, when an auxiliary machine is mounted | worn with a work tool, an opening sealing member is moved from a sealing position to an open position, and an opening is open | released. Preferably, when the accessory is mounted on the work tool, the male part comes into contact with the opening sealing member, and the opening is opened by moving the opening sealing member from the sealing position toward the opening position. On the other hand, when the accessory is mounted, the accessory detection means provided on the work tool controls the opening sealing member operation means provided on the work tool before the male part is inserted into the opening. Then, the opening sealing member may be moved.

  According to this embodiment, when the auxiliary machine is mounted on the work tool, the opening sealing member is moved from the sealing position to the open position. The timing at which the opening sealing member opens the opening is optimized. Furthermore, when the auxiliary machine is mounted on the work tool, the male part is in contact with the opening sealing member, and the male part is opened when the opening sealing member is moved from the sealing position toward the open position. It functions as a sealing member operating means. Therefore, it is not necessary to provide the opening sealing member operating means in the work tool, and the number of parts is reduced.

  According to the further form of the working tool which concerns on this invention, the opening part has a some partition and the partition between these openings. The opening sealing member positioned at the sealing position in the second drive mode seals the plurality of openings with the partition walls exposed. Typically, the opening forming member that forms the opening is fixed to the work tool, and a plurality of openings are provided in the opening forming member, so that a partition wall is formed between the openings. .

  According to this embodiment, the opening sealing member seals the opening with the partition walls exposed. Therefore, it is not necessary for the opening sealing member to cover (seal) the partition wall, and the opening sealing member is formed according to the size of the opening. Therefore, since the opening sealing member can open and seal a plurality of openings individually, the opening corresponding to the number of male terminals of the male part is opened and sealed.

  According to the further form of the work tool which concerns on this invention, the work tool provided with the auxiliary machine is comprised. Preferably, the auxiliary machine is configured as a dust collecting device including a dust collecting motor and a fan rotated by the dust collecting motor. And a dust collection motor is driven because a work tool supplies electric power to a dust collector in the 1st drive mode.

  According to this embodiment, power is supplied from the work tool to the dust collector as an auxiliary machine. Therefore, the dust collector can be driven while attached to the work tool, and the dust collector is rationally driven in accordance with the drive of the work tool.

  ADVANTAGE OF THE INVENTION According to this invention, the improvement technique for improving the dustproof performance of the mounting part in which an auxiliary machine is attached in a working tool is provided.

1 is a perspective view of a hammer drill and a dust collector according to a representative embodiment of the present invention. It is a side view of the hammer drill and dust collector of FIG. It is sectional drawing which shows the internal mechanism of a hammer drill. It is sectional drawing which shows the internal mechanism of a dust collector. It is a side view which shows the state with which the dust collector was mounted | worn with the hammer drill. It is sectional drawing of the hammer drill and dust collector of FIG. It is sectional drawing in the VII-VII line of FIG. It is a side view of the hammer drill and dust collector which concern on a modification. 1 is a perspective view showing a female connector and a male plug according to the present invention. It is a side view of a female connector and a male plug. It is sectional drawing of the female connector in the AA line of FIG. 10, and shows the state which moved the movable part. It is sectional drawing of the female connector in the BB line of FIG. 10, and shows the state which moved the movable part. It is sectional drawing of the female connector and male plug in the AA line of FIG. It is sectional drawing of the female connector and male plug in the BB line of FIG. FIG. 14 is a cross-sectional view corresponding to FIG. 13 illustrating a process of connecting the male plug to the female connector. FIG. 15 is a cross-sectional view corresponding to FIG. 14 illustrating a process of connecting the male plug to the female connector. It is sectional drawing equivalent to FIG. 13 which shows the state by which the male plug was connected to the female connector. FIG. 15 is a cross-sectional view corresponding to FIG. 14 showing a state in which a male plug is connected to the female connector. It is a side view equivalent to FIG. 10 which shows the state by which the male type plug was connected to the female type connector.

  A representative embodiment of the present invention will be described with reference to FIGS. The present embodiment will be described using an electric hammer drill as an example of a work tool on which a dust collector is detachably mounted. As shown in FIGS. 1 and 2, the hammer drill 101 is composed mainly of a main body 103 and a handle 109. The main body 103 is mainly composed of a motor housing 105 and a gear housing 107 that house the internal mechanism of the hammer drill 101.

  As shown in FIG. 2, the hammer bit 119 that performs a machining operation on the workpiece is detachably attached to the hammer drill 101 in the distal end side region (left side in FIG. 2) of the main body 103. The handle 109 has a grip portion 109A and a reinforcing portion 109B, and is provided in a rear end side region (right side in FIG. 2) opposite to the front end side region of the main body portion 103. Therefore, in the hammer drill 101, the hammer bit 119 side is referred to as a front side, and the handle 109 side is referred to as a rear side.

[Drive mechanism]
As shown in FIG. 3, the motor housing 105 is formed integrally with the handle 109 and accommodates the drive motor 111. The drive motor 111 is disposed such that the rotation axis is parallel to the long axis direction of the hammer bit 119. A cooling fan 112 is attached to the rotating shaft of the drive motor 111 in front of the drive motor 111. That is, the cooling fan 112 is provided between the drive mechanism and the drive motor 111 in the major axis direction of the hammer bit 119. Therefore, the cooling fan 112 is rotated by driving the drive motor 111, and cooling air is generated. The cooling fan 112 is formed as a centrifugal fan. Therefore, the cooling air flowing through the gear housing 107 is discharged from the opening 105 a provided on the lower surface of the motor housing 105 at a position corresponding to the cooling fan 112. The handle 109 is provided with a trigger 109a, and the operation of the trigger 109a switches on / off of the drive motor 111.

  As shown in FIG. 3, the gear housing 107 houses the motion conversion mechanism 113, the striking element 115, and the power transmission mechanism 117. The rotational output of the drive motor 111 is converted into a linear motion by a motion conversion mechanism 113 disposed in front of the drive motor 111 and transmitted to the striking element 115, and the longitudinal direction of the hammer bit 119 (the horizontal direction in FIG. 3). Generate impact force. The rotation output of the drive motor 111 is decelerated by the power transmission mechanism 117 disposed in front of the drive motor 111 and transmitted to the hammer bit 119, causing the hammer bit 119 to rotate in the circumferential direction. For convenience of explanation, the hammer bit 119 side is referred to as the front, and the handle 109 side is referred to as the rear.

  The motion conversion mechanism 113 is mainly composed of an intermediate shaft 125, a swing ring 129, and a cylindrical piston 131. The intermediate shaft 125 is rotated by the drive motor 111. As the intermediate shaft 125 rotates, the swing ring 129 is rocked in the major axis direction of the hammer bit 119 via the rotating body 127. The cylindrical piston 131 is reciprocated linearly in the long axis direction of the hammer bit 119 as the swing ring 129 swings.

  The power transmission mechanism 117 is mainly configured by a gear reduction mechanism including a plurality of gears. This gear reduction mechanism has a small diameter gear 133 that rotates integrally with the intermediate shaft 125, and a large diameter gear 135 that meshes with and engages with the small diameter gear 133. The power transmission mechanism 117 transmits the rotation of the drive motor 111 to the tool holder 137. The tool holder 137 is rotatably supported with respect to the gear housing 107 by a bearing 137a. Accordingly, the tool holder 137 is rotated, whereby the hammer bit 119 held by the tool holder 137 is rotated.

  The striking element 115 is mainly composed of a striker 143 and an impact bolt 145. The striker 143 is configured as a striker that is slidably disposed in the cylindrical piston 131. The impact bolt 145 is configured as an intermediate element slidably disposed in the tool holder 137. The striker 143 is driven via an air spring (pressure fluctuation) of the air chamber 131 a accompanying the sliding of the cylindrical piston 131 and collides with the impact bolt 145. As a result, the hammer bit 119 generates a striking force.

  In the hammer drill 101, when the drive motor 111 is energized and driven, the rotation of the drive motor 111 is converted into a linear motion through the motion conversion mechanism 113 and then transmitted to the hammer bit 119 through the striking element 115. The Thereby, the hammer bit 119 performs a hitting operation. The rotation of the drive motor 111 is transmitted to the hammer bit 119 via the power transmission mechanism 117. Thereby, the hammer bit 119 performs a hammering operation on the workpiece by performing a striking operation in the major axis direction and a rotating operation in the circumferential direction.

  The hammer drill 101 includes a mode switch (not shown) for switching the work mode. Then, when the operator operates the mode switch, the hammer drill mode and the drill mode as the work mode are switched. In the hammer drill mode, the hammer bit 119 performs a striking operation and a rotating operation. In the drill mode, the motion conversion mechanism 113 and the striking mechanism 115 are not driven, only the power transmission mechanism 117 is driven, and the hammer bit 119 performs a rotating operation. Thereby, a drilling operation is performed on the workpiece.

[handle]
As shown in FIG. 3, the grip portion 109 </ b> A of the handle 109 is formed so as to extend from the base end portion 109 </ b> A <b> 1 connected to the rear end portion of the motor housing 105 in a direction intersecting the major axis direction of the hammer bit 119. ing. A power cable 190 is provided at the distal end portion 109A2 of the grip portion 109A, and one end portion of the reinforcing portion 109B is coupled thereto. The other end of the reinforcing portion 109B is coupled to the motor housing 105 in front of the grip portion 109A. Therefore, the grip portion 109A, the reinforcing portion 109B, and the motor housing 105 are formed in a loop shape, and a protective space 261 surrounded by the grip portion 109A, the reinforcing portion 109B, and the motor housing 105 is formed. Therefore, the reinforcing portion 109B structurally reinforces the cantilever-shaped grip portion 109A and protects the operator's hand holding the grip portion 109A. That is, the operator's hand arranged in the protection space 261 is protected. A female connector 154 that is mechanically and electrically connected to the dust collector 200 is provided in the vicinity of the connecting portion between the reinforcing portion 109B and the motor housing 105. The power cable 190 is electrically connected to the drive motor 111 and the female connector 154 and is supplied with power through the power cable 190.

[Dust collector attachment]
Said hammer drill 101 is comprised so that the dust collector 200 may be attached so that attachment or detachment is possible. Specifically, as shown in FIGS. 1 to 3 and 7, the dust collector attaching portion formed on the hammer drill 101 includes a guide groove 151, a main body side engaging portion 152, an engaging groove 153, and a female connector. 154 is configured mainly. That is, the dust collector 200 is attached to the main body 103 and the handle 109 of the hammer drill 101. The guide groove 151 is composed of a pair of left and right grooves formed in a lower region of the gear housing 107. The guide groove 151 extends parallel to the long axis direction of the hammer bit 119. Further, as shown in FIG. 3, the main body side engaging portion 152 is constituted by a concave portion formed on the hammer bit 119 side with respect to the guide groove 151. The engagement groove 153 and the female connector 154 are formed on the front surface (surface on the hammer bit 119 side) of the reinforcing portion 109B of the handle 109.

[Dust collector]
Next, the dust collector 200 attached to the hammer drill 101 will be described. The dust collector 200 is also referred to as a dust collection attachment, and is configured as a portable dust collection attachment that can be carried with the hammer drill 101 while being attached to the hammer drill 101. Therefore, the hammer drill 101 can be driven with the dust collector 200 attached, and can be driven with the dust collector 200 removed. That is, the hammer drill 101 has either a drive mode in which the dust collector 200 is attached (also referred to as a dust collector attachment mode) or a drive mode in which the dust collector 200 is not attached (also referred to as a dust collector non-attachment mode). These drive modes are selected and driven.

  As shown in FIG. 4, the dust collector 200 is configured mainly with a main body 201, a dust collector 210, and a mounting mechanism 250. The main body 201 has a main body housing 201 </ b> A that forms the outline of the dust collector 200. The main body housing 201A accommodates a part of the dust transfer unit 215 and also accommodates the dust storage unit 220 and the drive unit 230.

  The dust collection unit 210 has an opening 211 formed as a through hole through which the hammer bit 119 is inserted. As shown in FIG. 6, the opening 211 is disposed so as to surround the hammer bit 119 in a state where the dust collector 200 is attached to the hammer drill 101.

  As shown in FIG. 4, the dust transfer unit 215 includes a first transfer unit 215a and a second transfer unit 215b. The first transfer unit 215 a is a hollow resin member and is connected to the dust collection unit 210. Therefore, the inside of the 1st transfer part 215a and the opening part 211 are mutually connected. As shown in FIG. 6, the first transfer part 215 a extends in a direction intersecting with the major axis direction of the hammer bit 119 in a state where the dust collector 200 is attached to the hammer drill 101.

  As shown in FIG. 4, the second transfer unit 215 b extends in a direction that intersects the direction in which the first transfer unit 215 a extends. In other words, the second transfer part 215 b extends in parallel with the long axis direction of the hammer bit 119. The second transfer part 215b is mainly configured by a transfer hose 216, a first extension part 217, and a second extension part 218. The first extending part 217 and the second extending part 218 are each a hollow resin member. The second extending portion 218 is configured as a part of the main body housing 201A. The first extending part 217 is slidable inside the second extending part 218 with respect to the extending direction of the second transfer part 215a (the left-right direction in FIG. 4). That is, the first extension part 217 and the second extension part 218 are relatively movable. A bellows-shaped transfer hose 216 is disposed inside the first extension part 217 and the second extension part 218. Therefore, the transfer hose 216 expands and contracts when the first extension part 217 slides relative to the second extension part 218. One end of the transfer hose 216 is in communication with the first transfer unit 215 a, and the other end is in communication with the dust container 220. That is, the accommodating part 225 of the dust accommodating part 220 is connected to the opening part 211 of the dust collecting part 210 via the 1st transfer part 215a and the 2nd transfer part 215b (transfer hose 216).

  As shown in FIG. 4, the dust accommodating part 220 is comprised mainly by the fixed part 221a and the movable part 221b. The fixing portion 221a is formed as a part of the main body housing 201A. On the other hand, the movable part 221b is rotatable around a fulcrum 222 provided in the main body housing 201A. The movable portion 221b has a latch 223, and the movable portion 221b is fixed to the fixed portion 221a by the latch 223 engaging with the fixed portion 221a. An accommodating portion 225 is provided in the movable portion 221b, and the transferred dust is temporarily accommodated in the accommodating portion 225. By releasing the engagement between the latch 223 and the fixed portion 221a and rotating the movable portion 221b, the storage portion 225 can be accessed, whereby the dust stored in the storage portion 225 is discarded. A filter 226 is disposed in a through hole formed above the accommodating portion 225 (on the driving portion 230 side).

  As shown in FIG. 4, a drive unit 230 is provided in the main body housing 201 </ b> A above the dust container 220. The drive unit 230 is mainly composed of a dust collection motor 231, a fan 232, a male plug 233, and a controller 234. The dust collection motor 231 is configured as a direct current motor, and the rotation shaft is disposed substantially parallel to the second transfer unit 215 b of the dust transfer unit 215. A fan 232 is attached to the rotating shaft of the dust collection motor 231 on the front side of the dust collection motor 231. The drive unit 230 communicates with the storage unit 225 through the filter 226. The dust collection motor 231 and the fan 232 are implementation configuration examples corresponding to the “dust collection motor” and the “fan” in the present invention, respectively.

  A male plug 233 that protrudes rearward from the main body housing 201 is disposed above the dust collection motor 231 on the side opposite to the dust container 220. The male plug 233 is composed of four plugs held by the plug holding part 233a. The front side of the plug holding portion 233a opposite to the male plug 233 is connected to the coil spring 233b. The coil spring 233b is further connected to the main body housing 201. Thereby, the plug holding part 233a and the male plug 233 can move in the front-rear direction (long axis direction of the hammer bit 119) via the coil spring 233b. The male plug 233 is electrically connected to the controller 234. As shown in FIG. 7, the controller 234 is disposed on the side of the drive motor 231 and controls the drive of the dust collection motor 231. The dust collection motor 231 is held by a plurality of ribs formed in the main body housing 201, and a space surrounded by the ribs and the controller 234 is defined as an air flow passage S.

[Mounting mechanism]
As shown in FIGS. 4 and 7, the dust collector 200 includes a mounting mechanism 250 for attaching to the hammer drill 101. The mounting mechanism 250 is provided on the upper surface of the main body housing 201 on the main body housing 201, a guide rail 251 formed integrally with the main body housing 201, an engaging convex portion 252 formed integrally with the plug holding portion 233a. The latch 253 is mainly used.

  As shown in FIG. 7, the guide rail 251 is formed of a pair of convex portions facing each other. As shown in FIG. 4, the engaging convex portion 252 is formed so as to protrude rearward of the dust collector 200 in parallel with the male plug 233. Note that the latch 253 can rotate with respect to the main body housing 201 using the front end of the latch 253 as a fulcrum, and the rear end of the latch 253 is above the main body housing 201 by a spring element (not shown) (upper in FIG. 4). Is biased away from the main body housing 201.

[Attaching the dust collector to the hammer drill]
Next, attachment of the dust collector 200 to the hammer drill 101 will be described. The dust collector 200 is attached to the hammer drill 101 from the position shown in FIG. 2 in the long axis direction of the hammer bit 119 and attached as shown in FIG. Specifically, the guide groove 151 provided in the gear housing 107 of the hammer drill 101 is engaged with the guide rail 251 of the dust collector 200, so that the dust collector 200 moves from the hammer bit 119 toward the handle 109. It is slid from the front to the back. Thereafter, as shown in FIG. 6, the main body side engaging portion 152 of the hammer drill 101 and the latch 253 of the dust collecting device 200 are engaged, and the engaging groove 153 of the hammer drill 101 and the engaging convex portion 252 of the dust collecting device 200 are engaged. Engage. That is, the dust collector 200 is engaged with the gear housing 107 and the handle 109 of the hammer drill 101. Thereby, the dust collector 200 is fixed to the hammer drill 101. At the same time when the dust collector 200 is attached to the hammer drill 101, the female connector 154 of the hammer drill 101 and the male plug 233 of the dust collector 200 are mechanically connected, whereby the hammer drill 101 and the dust collector 200 are electrically connected. Connected.

  As described above, the dust collector 200 is attached to the hammer drill 101 by engaging with the gear housing 107 and the handle 109 of the hammer drill 101. As shown in FIG. 2, a stepped portion 201 a is formed on the upper surface of the main body housing 201 of the dust collector 200. With this stepped portion 201a, as shown in FIG. 5, when the dust collector 200 is mounted on the hammer drill 101, a heat radiation space is provided between the motor housing 105 of the hammer drill 101 and the main body housing 201 of the dust collector 200. 260 is formed. The opening 105 a of the motor housing 105 is formed in a region corresponding to the heat radiation space 260, and the cooling air generated by the cooling fan 112 cools the drive motor 111 in the motor housing 105 and then passes through the opening 105 a. It is discharged into the heat dissipation space 260. Therefore, the dust collector 200 is attached to the hammer drill 101 without blocking the cooling air discharge port provided in the hammer drill 101.

[Electric connection structure of dust collector and hammer drill]
Next, with reference to FIGS. 9-19, the electrical connection of the dust collector 200 and the hammer drill 101 is demonstrated. 9 and 10 are a perspective view and a side view of the female connector 154 of the hammer drill 101 and the male plug 233 of the dust collector 200. FIG. In a state where the male plug 233 is not inserted into the female connector 154, the opening of the female connector 154 into which the male plug 233 is inserted is closed for dust prevention. The female connector 154 and the male plug 233 are implementation configuration examples corresponding to the “female part” and the “male part” in the present invention, respectively.

  Specifically, as shown in FIGS. 11 and 12, the female connector 154 includes a connector main body 155, a plug insertion portion 160, a movable portion 165, and a coil spring 170 as main components. 11 and 12, only the female connector 154 is shown in the cross-sectional line AA of FIG. 10 for convenience of explanation. 10 is the upper side of the female connector 154, the lower side of FIG. 10 is the lower side of the female connector 154, the left side of FIG. 10 is the front side of the female connector 154, and the right side of FIG. It is defined as the rear side.

  The connector main body 155 and the plug insertion portion 160 are integrally connected and fixed to the reinforcing portion 109B of the handle 109. Specifically, the female connector 154 is fixed so that the front surface of the plug insertion portion 160 is substantially flush with the outer surface of the reinforcing portion. On the other hand, the movable portion 165 is held between the plug insertion portion 160 and the connector main body portion 155, and is disposed so as to be movable relative to the plug insertion portion 160 and the connector main body portion 155 in the front-rear direction. The movable portion 165 is normally biased forward by a coil spring 170. Thereby, the movable portion 165 closes the opening 161 provided in the plug insertion portion 160. As a result, the inside of the female connector 154 is blocked from the outside.

  As shown in FIGS. 11 and 12, the connector body 155 is a substantially rectangular parallelepiped member, and is provided with a metal terminal 156, a first holding part 157, and a first inclined part 158. As shown in FIG. 11, the metal terminal 156 is composed of a plurality of sets of metal plate materials so as to come into contact with both surfaces of a plate-shaped male plug 233. Accordingly, the metal terminal 156 sandwiches the male plug 233 using the elasticity of the metal plate material, and the metal terminal 156 and the male plug 233 are mechanically and electrically connected. In the present embodiment, four sets of metal terminals 156 are provided corresponding to the four male plugs 233.

  The first holding portion 157 is provided to hold one end side of the coil spring 170 and protrudes from the connector main body portion 155 toward the movable portion 165. That is, the first holding portion 157 protrudes forward from the rear end portion of the connector main body portion 155. The first holding portion 157 is provided at two locations corresponding to the two coil springs 170.

  As shown in FIG. 12, the first inclined portion 158 protrudes from the connector main body portion 155 toward the plug insertion portion 160, and the protruding direction (the front-rear direction of the female connector 154: the insertion direction of the male plug 233). The first guide surface 158a is inclined with respect to the first guide surface 158a. As shown in FIG. 12, the first inclined portion 158 is provided at two locations on the upper side of the connector main body portion 155. The two first inclined portions 158 on the upper side are provided with an interval in a direction parallel to the outer surface (front surface) of the plug insertion portion 160. As shown in FIG. 10, two first inclined portions 158 are provided on the lower side of the connector main body portion 155 in the same manner as the first inclined portion 158 on the upper side.

  As shown in FIG. 11, the plug insertion portion 160 has four openings 161 into which the four male plugs 233 are inserted. The opening 161 extends in the vertical direction of the female connector 154, and the opening 161 has an inner opening width facing the connector main body 155 wider than the outer opening width on the opposite side. An inclined surface 161a is formed which is inclined with respect to the depth direction (the front-rear direction of the female connector 154: the insertion direction of the male plug 233). The plug insertion portion 160 and the opening portion 161 are implementation configuration examples corresponding to the “opening portion” and the “opening” in the present invention, respectively.

  As shown in FIG. 12, the plug insertion portion 160 is formed with a second inclined portion 162 that protrudes toward the connector main body portion 155. The second inclined portions 158 are provided at two locations on the upper side of the plug insertion portion 160 so as to oppose the two first inclined portions 158 on the upper side of the connector main body portion 155. Furthermore, the second inclined portion 162 has a second guide surface 162a that is inclined with respect to the protruding direction (the front-rear direction of the female connector 154: the insertion direction of the male plug 233). The second guide surface 162 a is formed in parallel with the first guide surface 158 a of the connector main body 155. Accordingly, a guide space extending in a direction inclined in the insertion direction of the male plug 233 is formed between the first guide surface 158a and the second guide surface 162a. Similar to the upper-side second inclined portion 162, two second inclined portions are provided on the lower side of the plug insertion portion 160. Thus, guide spaces are formed on the upper side and the lower side of the female connector 154, respectively.

  As shown in FIGS. 11 and 12, the movable portion 165 is mainly configured by a main body portion 166 that can move between the connector main body portion 155 and the plug insertion portion 160 in the front-rear direction of the female connector 154. As shown in FIGS. 9 and 10, the main body 166 is a substantially plate-like member, and is disposed between the upper and lower first inclined portions 158 (second inclined portions 162).

  As shown in FIG. 11, the main body 166 has four plug insertion holes 166a into which the four male plugs 233 are inserted. Furthermore, an opening sealing part 167 and a second holding part 168 are formed in the main body part 166. The opening sealing portion 167 is provided on the front side of the main body portion 166 facing the opening portion 161 of the plug insertion portion 160 so as to protrude from the main body portion 166 toward the plug insertion portion 160. The opening sealing portion 167 is formed at a position adjacent to the plug insertion hole 166a. On the distal end side of the opening sealing portion 167, an inclined surface 167a that is inclined with respect to the protruding direction of the opening sealing portion 167 (the front-rear direction of the female connector 154) is formed. The inclined surface 167 a is provided to face the inclined surface 161 a formed in the opening 161 of the plug insertion portion 160. That is, the inclined surface 161a and the inclined surface 167a are formed substantially in parallel.

  The second holding portion 168 is provided to hold the other end portion of the coil spring 170 and protrudes from the movable portion 165 toward the connector main body portion 155. That is, the second holding portion 168 is formed on the rear side surface of the main body portion 166 opposite to the front side surface where the opening sealing portion 167 is formed. The second holding portion 168 is provided at two locations corresponding to the two coil springs 170.

  As shown in FIG. 12, a guide pin 169 is connected to the main body 166. The guide pin 169 is disposed in a guide space formed between the first inclined portion 158 and the second inclined portion 162 on the upper side of the female connector 154. That is, the guide pin 169 protrudes upward from the main body 166. The guide pins are also connected downward from the main body 166 so that the guide pins are also disposed in the guide space formed between the first inclined portion and the second inclined portion on the lower side of the female connector 154. Has been.

  As shown in FIGS. 11 and 12, the coil spring 170 is held by the first holding part 157 and the second holding part 168. The coil spring 170 constantly urges the movable portion 165 forward.

  Next, the movement of the female connector 154 when the male plug 233 is connected to the female connector 154 will be described with reference to FIGS. As shown in FIGS. 13 and 14, before the male plastic 233 is inserted into the female connector 154, the opening sealing portion 167 is held by the opening 161 by the biasing force of the coil spring 170, and the opening 161 Is sealed. At this time, the opening edge portion of the opening 161 on the outer surface of the plug insertion portion 160 and the opening sealing portion 167 abut, and the outer surface of the plug insertion portion 160 and the tip end portion of the opening sealing portion 167 are arranged flush with each other. The Thereby, the opening 161 is sealed, and the communication between the metal terminal 156 and the outside is blocked. The forward position of the opening sealing portion 167 for sealing the opening 161 is an implementation configuration example corresponding to the “sealing position” in the present invention.

  When connecting the male plug 233 to the female connector 154, the male plug 233 provided in the dust collector 200 is moved from the position shown in FIG. 13 to the position shown in FIG. 15 from the front of the female connector 154. Move backwards. The distal end portion of the male plug 233 comes into contact with the opening sealing portion 167 and moves the movable portion 165 rearward against the urging force of the coil spring 170. At this time, two guide pins 169 (also referred to as guide members) provided on each of the upper part and the lower part of the main body part 166 of the movable part 165 pass through the guide space along the first guide surface 158a and the second guide surface 162a. Moving. That is, the guide pin 169 is guided by the first guide surface 158a and the second guide surface 162a, and the movable portion 165 moves. As a result, the movable portion 165 is moved away from the plug insertion portion 160 obliquely backward with respect to the plug insertion portion 160. Therefore, the sealing of the opening 161 by the opening sealing part 167 is released, and the male plug 233 is allowed to enter the female connector 154.

  When the male plug 233 is further moved toward the rear of the female connector 154 from the position shown in FIG. 15 to the position shown in FIG. 17, the plug insertion hole 166a formed adjacent to the opening sealing portion 167 The opening 161 of the plug insertion portion 160 is linearly arranged in the front-rear direction of the female connector 154. In other words, the movable portion 165 is guided so as to move obliquely rearward, whereby the plug insertion hole 161 of the movable portion 165 is moved in the lateral direction intersecting the front-rear direction of the female connector 154. Thereby, the opening part 161 and the plug insertion hole 166a are arrange | positioned in a straight line. Then, by arranging the opening 161 and the plug insertion hole 166a in a straight line, the male plug 233 is detached from the opening sealing portion 167 and inserted into the plug insertion hole 166a. Finally, the male plug 233 is The metal terminal 156 is disposed between the metal plate members. Thereby, as shown in FIG. 19, the connection between the male plug 233 and the female connector 154 is completed. The rear position of the opening sealing portion 167 that overlaps the partition wall formed between the opening portions 161 of the plug insertion portion 160 is an implementation configuration example corresponding to the “open position” in the present invention. Further, the front-rear direction and the lateral direction of the female connector 154 are implementation examples corresponding to the “axial direction” and the “crossing direction” in the present invention, respectively.

  When the connection between the male plug 233 and the female connector 154 is completed, the male plug 233 is mechanically and electrically connected to the metal terminal 156, and current is supplied from the hammer drill 101 to the dust collector 200. When the male plug 233 is connected to the female connector 154, the engagement convex portion 252 connected to the plug holding portion 233a is connected to the plug insertion portion 160 of the female connector 154. The engagement protrusion 252 and the engagement groove 153 are mechanically connected by being inserted into the joint groove 153. The metal terminal 156 and the male plug 233 are implementation configuration examples corresponding to the “female terminal” and the “male terminal” in the present invention, respectively.

  On the other hand, when the male plug 233 is removed from the female connector 154, an operation opposite to the operation of connecting the male plug 233 to the female connector 154 is performed. At this time, when the engagement of the male plug 233 and the metal terminal 156 is released and the male plug 233 is pulled out from the plug insertion hole 166a and the opening 161, the movable portion 165 is attached to the front by the coil spring 170. Therefore, the opening sealing part 167 of the movable part 165 seals the opening part 161.

  Specifically, as the male plug 233 is pulled out, the guide pin 169 of the movable portion 165 is guided by the first guide surface 158a and the second guide surface 162a as shown in FIGS. The part 165 is moved obliquely forward so as to be close to the plug insertion part 160. Finally, as shown in FIG. 13, the male plug 233 is pulled out from the female connector 154. At this time, as shown in FIGS. 15 and 13, the opening sealing portion 167 of the movable portion 165 smoothly moves into the opening 161 by the inclined surface 161 a and the inclined surface 167 a inclined with respect to the front-rear direction of the female connector 154. Placed in. As a result, the opening 161 is sealed by the opening sealing portion 167.

  When the dust collector 200 is attached to the hammer drill 101, power can be supplied to the controller 234 of the dust collector 200 from the power cable 190 of the hammer drill 101 through the electrically connected male plug 233 and female connector 154. It becomes. In other words, the dust collector 200 attached to the handle 109 of the hammer drill 101 is supplied with power through the handle 109. Therefore, the handle 109 is not only gripped by an operator, but also functions as a component for attaching the dust collector 200 and supplying power to the dust collector 200.

[Operation of hammer drill and dust collector]
Specifically, when a trigger 109a is operated by an operator to perform a predetermined work by the hammer drill 101, an alternating current is supplied to the drive motor 111 from the external power source to the hammer drill 101 via the power cable 190. Driven. Thereby, the motion conversion mechanism 113, the striking element 115, and the power transmission mechanism 117 as drive mechanisms are driven by the drive motor 111, and the hammer bit 119 is driven. The hammer bit 119 is pressed against the workpiece to perform a predetermined processing operation (hammer drilling operation, drilling operation). During this processing operation, the dust collecting portion 210 surrounding the hammer bit 119 also contacts the workpiece together with the hammer bit 119. The hammer bit 119 enters the workpiece, but the dust collecting portion 210 remains in contact with the workpiece surface. That is, as the processing operation progresses, the bellows-shaped transfer hose 216 contracts, and the first extending part 217 slides inside the second extending part 218, so that the dust collecting part 210 becomes the hammer bit 119. Move relative to.

  In the hammer drill 101, the trigger 109 a is operated to drive the drive motor 111, and at the same time, a drive signal is output to the dust collector 200. For example, when the trigger 109 a is operated, a trigger switch (not shown) is turned on, and a minute current as a drive signal is supplied to the dust collector 200. This drive signal is output from the hammer drill 101 to the dust collector 200 through a separate line from the dust collector drive power supply line supplied to the dust collector 200. Both wirings are electrically connected by the female connector 154 of the hammer drill 101 and the male plug 233 of the dust collector 200. Based on this drive signal, the controller 234 drives the dust collection motor 231. Specifically, the controller 234 receives the drive signal and simultaneously drives the dust collection motor 231 so that the hammer drill 101 and the dust collection device 200 are driven almost simultaneously. The drive mode in which the hammer drill 101 and the dust collector 200 are simultaneously driven in a state where the dust collector 200 is attached is an implementation configuration example corresponding to the “first drive mode” in the present invention. The hammer drill 101 can be driven even when the dust collector 200 is not attached. The drive mode in which the hammer drill 101 is driven in a state where the dust collector 200 is not attached is an implementation configuration example corresponding to the “second drive mode” in the present invention.

  Regarding the driving of the dust collector 200, the controller 234 reduces the voltage and converts alternating current into direct current before supplying the power supplied via the handle 109 of the hammer drill 101 to the dust collecting motor 231. To do. That is, the controller 234 functions as a transformer and functions as a converter. Then, the controller 234 supplies power to the dust collection motor 231 to control the drive of the dust collection motor 231. Thereby, the controller 234 controls the rotation of the fan 232.

  When the fan 232 is rotated, air is sucked from the opening 211 of the dust collector 210 as shown in FIG. As shown by the arrows in FIG. 6, the sucked air passes through the transfer hose 216, the accommodating portion 225, the filter 226, and the dust collection motor 231, reaches the fan 232, and enters the body housing 201 of the dust collection device 200. It is discharged from the formed exhaust port (not shown). Due to this air flow, dust generated during processing of the workpiece by the hammer bit 119 is sucked from the opening 211 of the dust collecting unit 210 and transferred to the storage unit 225. Then, when the sucked air passes through the filter 226, dust is captured by the filter 226 and accumulated in the housing portion 225.

  The air that has passed through the filter 226 passes through the air flow path S (see FIG. 7) between the controller 243 and the dust collection motor 231 and reaches the fan 232. As shown in FIG. 7, the air flow passage S is formed by a wall (for example, a heat radiating plate) constituting the outer surface of the controller 243 and a rib inside the main body housing 201 that holds the dust collection motor 231. Therefore, when the air passes through the air flow passage S, the controller 243 and the drive motor 231 are cooled.

  On the other hand, a stop signal is output to the dust collector 200 at the same time as the operation of the trigger 109 a is released to stop the drive of the drive motor 111. For example, when the trigger 109a is operated, a trigger switch (not shown) is turned OFF, and the supply of the minute current supplied as a drive signal to the dust collector 200 is cut off, thereby stopping. A signal is output. Based on this stop signal, the controller 234 stops the dust collection motor 231. Specifically, the controller 234 stops the dust collection motor 231 after a predetermined time (for example, 3 seconds) has elapsed after receiving the stop signal. Thereby, even after the hammer drill 101 stops driving, the driving of the dust collector 200 is continued.

  In the above embodiment, the handle 109 has the grip portion 109A and the reinforcing portion 109B, but is not limited thereto. For example, as shown in FIG. 8, the handle 109 may include only the grip portion 109A. In this case, the dust collector 200 has a handle connecting portion 255 at the rear end portion on the opposite side to the dust collecting portion 210. Then, a male terminal (not shown) provided at the handle connection portion 255 and a female terminal (not shown) provided at the attachment portion 109C at the tip of the grip portion 109A are engaged and electrically connected. At this time, a heat radiation space 270 is formed by the dust collector 200, the motor housing 105 (main body 103), and the handle 109. That is, since the dust collector 200 is provided with the stepped portions 201a and 201b, when the dust collector 200 is attached to the hammer drill 101, the heat radiation space 270 is formed. The heat radiation space 270 not only discharges the cooling air from the opening 105a but also functions as a space for placing the operator's finger holding the grip 109A. Therefore, the dust collector 200 attached to the hammer drill 101 protects the operator's finger holding the grip portion 109 </ b> A when the hammer drill 101 is operated.

  According to the above embodiment, the position where the opening sealing portion 167 is disposed as the sealing position is a position that is flush with the opening edge of the opening 161. Therefore, a space in which dust or the like accumulates in the opening 161 is not formed. Therefore, when the male plug 233 pushes and moves the opening sealing portion 167, mixing of dust or the like into the female connector 154 is prevented. In addition, the said effect is an effect acquired unless the recessed part which may accumulate dust in the opening part 161 is formed. Therefore, the sealing position may be a position where the opening sealing portion 167 protrudes outside the female connector 154 from the opening 167.

  Moreover, according to the above embodiment, the opening sealing part 167 has both the axial direction of the female connector 154 (front-rear direction of the hammer drill 101) and the crossing direction (left-right direction of the hammer drill 101) intersecting the axial direction. Moved to. That is, the opening sealing portion 167 is moved in a direction inclined with respect to the axial direction. If the opening sealing portion moves only in the axial direction, the opening sealing portion obstructs the entry of the male plug. In addition, when the opening sealing portion moves only in the crossing direction, a recess that easily collects dust is formed in the opening. However, in this embodiment, the opening sealing part 167 is moved in a direction inclined with respect to the axial direction. Therefore, when the male plug 233 is inserted into the opening 161 and the movement of the opening sealing part 167 in the axial direction for sealing the opening 161 and opening the opening 161, and the male plug 233 is inserted. The movement of the opening sealing portion 167 in the crossing direction so as not to hinder the entry of the plug 233 is rationally performed.

  Moreover, according to the above embodiment, when the dust collector 200 is attached to the hammer drill 101, the opening sealing portion 167 is moved from the sealing position to the open position. Thereby, the timing when the opening sealing part 167 opens the opening part 161 is optimized.

  According to the above embodiment, the dust collector 200 is attached to the handle 109. Therefore, the handle 109 is used not only as a grip part gripped by an operator but also as a dust collector attachment part to which the dust collector 200 is attached.

  Further, according to the above embodiment, the dust collector 200 is attached to the main body 103 and the handle 109 of the hammer drill 101. That is, the dust collector 200 is held at a plurality of locations of the hammer drill 101. Therefore, the dust collector 200 is stably attached to the hammer drill 101.

  Further, according to the above embodiment, the dust collector 200 is attached to the handle 109 and is supplied with power through the handle 109. Therefore, the wiring for supplying power to the dust collector 200 is disposed inside the handle 109 of the hammer drill 101. In general, in a work tool, mechanical parts such as a drive mechanism for driving a tip tool are not arranged inside the handle 109. Therefore, mechanical system elements such as a drive mechanism and electrical system elements such as wiring are rationally separated.

  Moreover, according to the above embodiment, the dust collector 200 is attached to the hammer drill 101 so that the heat radiation spaces 260 and 270 are formed between the hammer drill 101 and the dust collector 200. In other words, the stepped portions 201 a and 201 b are provided so that the heat radiation spaces 260 and 270 are formed when the dust collector 200 is attached to the hammer drill 101. Therefore, the dust collector 200 does not block the opening 105a as an outlet for the cooling air discharged from the hammer drill 101. As a result, the cooling air generated by the cooling fan 112 is reliably discharged from the inside of the main body 103 to the outside.

  Moreover, according to the above embodiment, the side wall of the controller 243 constitutes the air flow passage S. That is, the controller 243 is disposed so as to be exposed to the air flow path S. Therefore, the cooling efficiency of the controller 243 due to the air flow generated by the rotation of the fan 232 is increased. That is, the heat generated when the controller 234 operates as a transformer and a converter is efficiently dissipated.

  Further, according to the above embodiment, in the air flow generated by the rotation of the fan 232, the air is cooled as air and cools the dust collection motor 231 and the controller 234 after passing through the filter 226. Since dust is captured by the filter 226, the air after passing through the filter 226 cools the dust collection motor 231 and the controller 234 as clean air. Therefore, the influence of dust on the dust collection motor 231 and the controller 234 is suppressed.

  Moreover, according to the above embodiment, after the drive of the hammer drill 101 stops, the dust collector 200 continues a drive. That is, dust generated by the processing operation on the workpiece is collected by the dust collector 200 even after the processing operation is completed. Therefore, dust is rationally collected by the dust collector 200.

  In the above embodiment, the dust collector 200 is configured to be attached to the hammer drill 101 by engaging with the guide groove 151 and the handle 109 of the hammer drill 101, but is not limited thereto. . For example, the dust collector 200 may be attached only to the handle 109 of the hammer drill 101, and the dust collector 200 may be configured to be held fixed to the hammer drill 101.

  In the above embodiment, the male plug 233 is configured to contact the opening sealing portion 167 and move the opening sealing portion 167, but the present invention is not limited to this. For example, the dust collector 200 may have a member that abuts on the movable part 165 other than the male plug 233 and moves the movable part 165. Further, the hammer drill 101 may be provided with a movable part control member that moves the movable part 165, a control device that controls the movable part control member, and detection means that detects that the dust collector 200 is mounted. In this case, the detection means detects that the guide rail 251 of the dust collector 200 is engaged with the guide groove 151 of the hammer drill 101 when the dust collector 200 is mounted, and based on the detection result, The control device controls the movable part control member to move the movable part 165.

  In the above embodiment, the male plug 233 and the metal terminal 156 of the female connector 154 are electrically connected. However, the present invention is not limited to this. That is, the male plug 233 and the female connector 154 may be mechanically connected without being electrically connected. In that case, the dust collector 200 as an auxiliary machine is held by the hammer drill 101 by mechanical engagement between the male plug 233 and the female connector 154.

  Moreover, in the above embodiment, although demonstrated using the dust collector 200 as an example of the auxiliary machine attached to the work tool of this invention, it is not restricted to this. As the auxiliary machine, an illumination device that illuminates the work area, a laser irradiator that displays a horizontal line and / or a vertical line by laser irradiation, or an information display device (display) that indicates information on the state of the hammer drill 101 can be used.

  Moreover, in the above embodiment, although this invention was applied to the hammer drill as an example of a working tool, it is not restricted to this. For example, the present invention can be applied to a work tool that generates dust when processing a workpiece, such as an electric hammer, an electric drill, a multi-tool, and a cutting tool.

In view of the gist of the present invention, the following modes can be configured for the work tool according to the present invention. Each aspect is used not only alone or in combination with each other, but also in combination with the claimed invention.
(Aspect 1)
The sealing position is a position where the opening sealing member overlaps the partition wall in the intersecting direction.
(Aspect 2)
The sealing position is a position on the rear side of the partition wall where the opening sealing member overlaps the partition wall when the female part is viewed from the opening side in the axial direction.
(Aspect 3)
The opening sealing member has an inclined surface extending in an inclination direction inclined in the axial direction.
(Aspect 4)
The opening has an inclined surface extending in an inclination direction inclined in the axial direction.
(Aspect 5)
The inclined surface of the opening sealing member and the inclined surface of the opening are substantially parallel.
(Aspect 6)
By connecting the handle connecting portion to the handle of the work tool, the dust collecting device is fixedly attached to the handle.
(Aspect 7)
The main body portion houses a dust collecting motor and a fan, and has a tool main body connecting portion connected to the tool main body of the work tool, and a handle connecting portion connected to the handle of the work tool.
(Aspect 8)
The tool body of the work tool has a dust collector attachment portion extending in parallel with the extending direction of the drive shaft of the tip tool,
The tool body connecting portion of the dust collector has an engaging portion that slidably engages with the dust collector mounting portion in the extending direction of the drive shaft,
The handle has a dust collector connecting part to which the handle connecting part of the dust collector is connected,
The male terminal and the female terminal are engaged when the engaging portion slides from the tip tool side toward the handle side in parallel to the extending direction of the drive shaft with respect to the dust collector attachment portion. The electrical connection is established, and the attachment of the dust collector to the work tool and the engagement of the male terminal and the female terminal are completed almost simultaneously.
(Aspect 9)
One component of the dust collector attaching portion and the engaging portion is formed by a recess extending in the extending direction,
The other component of the dust collector attaching portion and the engaging portion is formed by a convex portion that engages with the concave portion.
(Aspect 10)
The auxiliary machine which can be mounted | worn with the work tool of any one of Claims 1-7.
(Aspect 11)
An auxiliary machine according to aspect 10,
An auxiliary machine configured as a dust collecting device including a dust collecting motor and a fan rotated by the dust collecting motor.

(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 101 is an example of a configuration corresponding to the “work tool” of the present invention.
The female connector 154 is an example of a configuration corresponding to the “female part” of the present invention.
The metal terminal 156 is an example of a configuration corresponding to the “female terminal” of the present invention.
The plug insertion portion 161 is an example of a configuration corresponding to the “opening portion” of the invention.
The opening 161 is an example of a configuration corresponding to the “opening” of the present invention.
The dust collector 200 is an example of a configuration corresponding to the “auxiliary machine” of the present invention.
The dust collection motor 231 is an example of a configuration corresponding to the “dust collection motor” of the present invention.
The fan 232 is an example of a configuration corresponding to the “fan” of the present invention.
The male plug 233 is an example of a configuration corresponding to the “male part” of the present invention.
The male plug 233 is an example of a configuration corresponding to the “male terminal” of the present invention.

DESCRIPTION OF SYMBOLS 101 Hammer drill 103 Main body part 105 Motor housing 105a Opening part 106 Sliding guide 107 Gear housing 107a Bearing holding part 107b Opening part 108 Bellows member 109 Handle 109A Grip part 109B Reinforcement part 109C Attachment part 109a Trigger 109b Engagement convex part 109c Trigger switch 110 Mode changeover switch 111 Drive motor 111a Commutator 112 Cooling fan 113 Motion conversion mechanism 115 Stroke element 117 Power transmission mechanism 119 Hammer bit 125 Intermediate shaft 127 Rotating body 129 Oscillating ring 131 Cylindrical piston 131a Air chamber 133 Small diameter gear 135 Large diameter gear 137 Tool holder 137a Bearing 143 Striker 145 Impact bolt 151 Guide groove 152 Main body side engaging portion 153 Engaging groove 154 Female connector 55 Connector main body 156 Metal terminal 157 First holding portion 158 First inclined portion 158a First guide surface 160 Plug insertion portion 161 Opening portion 161a Inclined surface 162 Second inclined portion 162a Second guide surface 165 Movable portion 166 Main body portion 166a Plug Insertion hole 167 Opening sealing portion 167a Inclined surface 168 Second holding portion 169 Guide pin 170 Coil spring 190 Power cable 200 Dust collector 201 Main body housing 201a Stepped portion 201b Stepped portion 210 Dust collecting portion 211 Opening portion 215 Dust transfer portion 215a 1st transfer part 215b 2nd transfer part 216 transfer hose 217 1st extension part 218 2nd extension part 220 dust storage part 221a fixed part 221b movable part 222 fulcrum 223 latch 225 storage part 226 filter 230 drive part 231 dust collection Motor 232 Fan 233 Male plug 233a Plug holding portion 233b Coil spring 234 Controller 250 Mounting mechanism 251 Guide rail 252 Engaging projection 253 Latch 255 Handle connection portion 260 Heat radiation space 261 Protective space 270 Heat radiation space

Claims (9)

A work tool to which the auxiliary machine is detachably attached,
A first drive mode for driving the tip tool with the accessory attached, and a second drive mode for further driving the tip tool with the accessory removed from the work tool in the first drive mode. And the first drive mode and the second drive mode are selectively switched to enable driving in both drive modes,
A female part that includes an opening having an opening into which the male part of the auxiliary machine is inserted, and engages with the male part;
An opening sealing member capable of moving between a sealing position capable of sealing the opening of the female portion and an open position capable of opening the opening;
The sealing position is set as a position where the opening sealing member is flush with the opening edge of the opening or a position protruding from the opening edge to the outside of the female part,
The open position is set as a position inside the female portion from the opening edge,
In the first drive mode, the opening sealing member is positioned at the open position to open the opening, and the male part of the auxiliary machine is engaged with the female part through the opening. And
In the second driving mode, the opening sealing member is located at the sealing position and configured to seal the opening. The work tool according to claim 1,
The female part has a female terminal that extends in a predetermined axial direction intersecting a plane formed by the opening edge and engages with a male terminal of the male part,
In the first drive mode, the male terminal and the female terminal are electrically connected to each other when the male terminal and the female terminal are engaged with each other. Work tools. The work tool according to claim 2,
The opening sealing member is
A work tool configured to be movable in both directions of the axial direction and a crossing direction intersecting the axial direction with respect to the opening. The work tool according to claim 3,
The opening sealing member is
A work tool configured to move in an inclined direction inclined in the axial direction by simultaneously moving in both the axial direction and the intersecting direction with respect to the opening. The work tool according to any one of claims 1 to 4,
When the auxiliary machine is mounted on the work tool, the opening sealing member is moved from the sealing position to the opening position, and the opening is opened. The work tool according to claim 5,
When the auxiliary machine is mounted on the work tool, the male part contacts the opening sealing member, and the opening sealing member is moved from the sealing position toward the open position. A working tool characterized by The work tool according to any one of claims 1 to 6,
The opening has a plurality of openings and a partition wall between the plurality of openings,
In the second drive mode, the opening sealing member positioned at the sealing position is configured to seal the plurality of openings with the partition walls exposed. . The work tool according to any one of claims 1 to 7,
A work tool with an auxiliary machine, comprising the removable auxiliary machine. The work tool according to claim 8,
The auxiliary machine is configured as a dust collecting device including a dust collecting motor and a fan rotated by the dust collecting motor.
The work tool is configured such that the dust collection motor is driven by supplying power to the dust collector in the first drive mode.

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