WO2019026592A1

WO2019026592A1 - Driving tool

Info

Publication number: WO2019026592A1
Application number: PCT/JP2018/026556
Authority: WO
Inventors: 秋葉　美隆
Original assignee: 株式会社マキタ
Priority date: 2017-08-01
Filing date: 2018-07-13
Publication date: 2019-02-07

Abstract

A nail gun 1 comprises a motor 2, a flywheel 4, a driver 3, an operation mechanism 7, a contact arm 13, a contact arm switch, a trigger 140, a trigger switch 141, and a controller 18. The driver 3 conducts driving work by means of rotational energy transferred from the flywheel 4. The operation mechanism 7 causes the driver 3 to transition from an initial state to a transfer-enabled state in which rotational energy can be transferred. The controller 18 starts operation of the motor 2 when the trigger switch 141, which serves as a start switch for the motor 2, is in an on-state, and, under the condition that the trigger switch 141 is put in the on-state after the contact arm switch has been put in an on-state, causes the operation mechanism 7 to operate, thereby causing the driver 3 to conduct driving work.

Description

Driving tool

The present invention relates to a driving tool for driving a driving material into a workpiece by a driver.

When the contact arm switch and the trigger switch are turned on in response to the pressing operation of the contact arm against the workpiece by the user and the pulling operation of the trigger, it is assumed that the start instruction of the driving operation by the driver has been input. A driving tool is known which starts the operation. For example, the driving tool disclosed in US Pat. No. 7,137,541 includes a contact arm switch, a trigger switch, a driver, a motor assembly, and a controller. The motor assembly includes a flywheel driven by the motor and an actuator for moving the driver into engagement with the flywheel. The controller activates the motor when either the contact arm switch or the trigger switch is activated, and activates the actuator when both switches are activated.

In the above-mentioned driving tool, a plurality of modes which can be selected via the selection switch are set. Further, as the activation condition of the actuator, the activation order of the contact arm switch and the trigger switch is determined corresponding to each mode. When the sequential feed mode is selected among the plurality of modes, the controller activates the contact arm switch and the trigger switch in this order, and activates the actuator when the kinetic energy of the elements in the motor assembly exceeds the threshold. And make the driver start the driving operation. In this case, after the motor is started in response to the start of the contact arm switch, it takes some time until sufficient kinetic energy is stored. Therefore, for the user who performs the pressing operation of the contact arm and the pulling operation of the trigger almost simultaneously, the time lag from the trigger switch activation to the start of the actual striking operation may be felt long.

In view of such circumstances, the present invention is responsive to the start of the actual driving operation in response to an instruction to start the driving operation in the driving tool which starts the driving operation on condition that the contact arm switch and the trigger switch are activated in this order. The purpose is to provide technology that contributes to improvement.

According to one aspect of the present invention, there is provided a driving tool configured to inject a driving material from an injection port and drive the driving material into a workpiece. The driving tool includes a motor, a flywheel, a driver, an operating mechanism, a motor start switch, a contact arm, a contact arm switch, a trigger, a trigger switch, and a controller.

The flywheel is configured to be rotationally driven by a motor. The driver is disposed to face the outer periphery of the flywheel. Further, the driver is configured to perform the driving operation by moving forward linearly from the initial position along the operation line by the rotational energy transmitted from the flywheel. The operating line extends in the front-rear direction of the driving tool. The driving operation is an operation for driving a driving material into a workpiece. In the present embodiment, rotational energy of the flywheel may be transmitted from the flywheel directly to the driver, or may be transmitted to the driver via a transmission member disposed between the flywheel and the driver.

The actuation mechanism is configured to shift the driver from an initial state, which is located at an initial position, to a transmissible state in which rotational energy can be transmitted. The contact arm is disposed movably in the front-rear direction near the injection port. In addition, the contact arm is configured to move rearward in response to the pressing on the workpiece by the user. The contact arm switch is configured to be turned on in response to the rearward movement of the contact arm. The trigger is configured to allow a pull operation by the user. The trigger switch is configured to be turned on in response to the pull operation of the trigger.

The controller is configured to control the operation of the motor and the actuation mechanism. The controller is configured to start driving the motor when the start switch is turned on. The controller is further configured to cause the driver to perform the striking operation by operating the actuating mechanism, provided that the trigger switch is turned on after the contact arm switch is turned on. .

In the driving tool of this aspect, the trigger switch is turned on after the contact arm switch is turned on, which is a condition for starting the driver's driving operation. That is, for the user, the operation for pressing the contact arm against the workpiece and pulling the trigger in order is an operation for inputting the start instruction of the driving operation (hereinafter simply referred to as the starting operation for starting the driving operation) It is. The user can turn on the start switch in advance to start driving of the motor before the start instruction operation for starting the driving operation. Since the start instruction operation of the driving operation is performed after the user actually specifies the position where the driving material is to be driven, it usually takes some time until the pressing operation of the contact arm. Therefore, the driving tool according to this aspect can store sufficient rotational energy in the flywheel during this time. As a result, even if the pressing operation of the contact arm against the workpiece and the pulling operation of the trigger are performed almost simultaneously, the driver's driving operation can be started promptly after the completion of the start instruction of the driving operation. it can. That is, it is possible to improve the responsiveness of the actual launch operation start to the launch operation start instruction.

In one aspect of the present invention, the trigger switch may be configured to double as a start switch of the motor. According to this aspect, the user can easily realize the operation for inputting the motor drive start instruction and the operation for inputting the drive operation start instruction by the pull operation of the trigger which is the same member. can do. In addition, an increase in the number of parts of the driving tool can be avoided.

In one aspect of the present invention, the controller is configured to determine that the start switch of the motor is turned on and start driving the motor when the trigger switch is turned on when the motor is not driven. It may be The controller is further configured to operate the actuating mechanism if the motor is in operation and the trigger switch is turned on after the contact arm switch is turned on. Good. According to this aspect, the controller can properly use one trigger switch as the motor start switch and the switch for inputting the start instruction of the driving operation.

In one aspect of the present invention, the controller may be configured to continue driving of the motor for at least a predetermined period, even when the start switch is turned off. According to this aspect, even when the start switch is turned off, the state of storing rotational energy in the flywheel is maintained for at least a predetermined period. Therefore, after one driving operation, the user performs another start operation for starting the driving operation (that is, pull operation following the pressing operation of the contact arm against the workpiece) while driving of the motor continues. Then, it is possible to quickly start the next driving operation. That is, a plurality of driving operations can be performed continuously in a short time. Here, the “predetermined period” is typically determined from any event (for example, start of driving of motor, switching of start switch or contact arm switch after start of driving of motor). It may be a period until time (for example, 3.5 seconds, 5 seconds, 7 seconds) elapses.

According to one aspect of the present invention, there is provided a driving tool configured to inject a driving material from an injection port and drive the driving material into a workpiece. The driving tool comprises a motor, a flywheel, a driver, an operating mechanism, a contact arm, a contact arm switch, a trigger, a trigger switch, and a controller.

The controller is configured to control the operation of the motor and the actuation mechanism. The controller is configured to start driving the motor when the trigger switch is turned on and then turned off. The controller is further configured to cause the driver to perform the striking operation by operating the actuating mechanism, provided that the trigger switch is turned on after the contact arm switch is turned on. .

In the driving tool of this aspect, the trigger switch is turned on after the contact arm switch is turned on, which is a condition for starting the driver's driving operation. That is, it is the start instruction operation of the driving operation for the user to sequentially perform the pressing operation of the contact arm against the workpiece and the pulling operation of the trigger. The user can start driving the motor by pulling the trigger and releasing the pulling operation before the start instruction operation of the driving operation. Since the start instruction operation of the driving operation is performed after the user actually specifies the position where the driving material is to be driven, it usually takes some time until the pressing operation of the contact arm. Therefore, the driving tool according to this aspect can store sufficient rotational energy in the flywheel during this time. As a result, even if the pressing operation of the contact arm against the workpiece and the pulling operation of the trigger are performed almost simultaneously, the driver's driving operation can be started promptly after the completion of the start instruction of the driving operation. it can. That is, it is possible to improve the responsiveness of the actual launch operation start to the launch operation start instruction.

Also, in the conventional driving tool, regardless of the order of pressing operation of the contact arm against the workpiece and pulling operation of the trigger, when both operations are performed (that is, both the contact arm switch and the trigger switch are There is one that starts the driver's drive operation when it is turned on. Therefore, if the motor is driven while the trigger is pulled before the pressing operation of the contact arm, then the user may misunderstand that the driving operation is started only by pressing the contact arm. there's a possibility that. On the other hand, according to the driving tool of this aspect, the driving of the motor is not started unless the user once cancels the pulling operation of the trigger. Therefore, the user can easily understand that it is necessary to pull the trigger after pressing the contact arm against the workpiece while the motor is driven. Thus, the driving tool according to this aspect can exhibit excellent operability.

According to one aspect of the present invention, the controller may be configured to continue driving the motor for at least a predetermined period even when the trigger switch is turned off during driving of the motor. In this aspect, since driving of the motor is started when the trigger switch is turned on and then turned off, the trigger switch can be turned off while driving the motor. After the operation, that is, after the implantation operation is performed. According to this aspect, even when the trigger switch is turned off after the driving operation, the state of storing rotational energy in the flywheel is maintained for at least a predetermined period. Therefore, after one driving operation, the user can start the next driving operation promptly by performing start operation for starting the driving operation again while the driving of the motor is continued. That is, a plurality of driving operations can be performed continuously in a short time. Here, the “predetermined period” is typically determined from any event (for example, start of driving of motor, switching of start switch or contact arm switch after start of driving of motor). It may be a period until time (for example, 3.5 seconds, 5 seconds, 7 seconds) elapses.

In one aspect of the present invention, the controller is configured to start driving the motor also when the trigger switch is in the off state and the contact arm switch is turned on while the motor is not in operation. It may be The controller is further configured to cause the driver to perform a driving operation by operating the actuating mechanism on condition that the trigger switch is turned on after the contact arm switch is turned on. It is also good. That is, in this aspect, the motor start instruction can be input not only from the start switch or the trigger switch but also from the contact arm switch. According to this aspect, the convenience of the driving tool can be improved by diversification of the motor start instruction and the start instruction of the driving operation.

In one aspect of the present invention, the controller is configured to continue driving the motor for at least a predetermined period even when the contact arm switch triggered to start driving the motor is turned off. Good. According to this aspect, even when the contact arm switch triggered to start the driving of the motor is turned off, the state of storing rotational energy in the flywheel is maintained for at least a predetermined period. Therefore, after one driving operation, the user performs another start operation for starting the driving operation (that is, pull operation following the pressing operation of the contact arm against the workpiece) while driving of the motor continues. Then, it is possible to quickly start the next driving operation. That is, a plurality of driving operations can be performed continuously in a short time. Here, the “predetermined period” is typically determined from any event (for example, start of driving of motor, switching of start switch or contact arm switch after start of driving of motor). It may be a period until time (for example, 3.5 seconds, 5 seconds, 7 seconds) elapses.

In one aspect of the present invention, the controller may be configured to continue driving of the motor for a predetermined period after the start of driving of the motor. According to this aspect, it is possible to simply measure the period in which the driving of the motor is continued.

In one aspect of the present invention, the controller may be configured to continue driving of the motor for a predetermined period after completion of the driving operation. Here, “completion of the driving operation” may be when the driver actually drives the driving material into the workpiece, or the driving operation is completed based on an event corresponding to the driving operation. It may be a time that can be regarded as corresponding (for example, when a certain time has passed since the trigger switch was turned on or off, a certain time has passed since the actuation of the actuating mechanism, etc.). According to this aspect, it is possible to reliably provide a period for continuing the driving of the motor after the completion of the driving operation.

According to one aspect of the present invention, when the trigger switch is turned on after the contact arm switch is turned on, the controller temporarily stops the driving of the motor, and after completion of the driving operation, the controller It may be configured to resume driving. If the trigger switch is turned on after the contact arm switch is turned on, that is, if an instruction to start the striking operation is performed, the flywheel will rotate by inertia even if the motor is stopped. Can continue. According to this aspect, when the driving operation is performed, the rotational speed of the motor is rapidly reduced, so that the load on the motor can be suppressed, and protection of the motor can be achieved.

It is explanatory drawing which shows typically the whole structure of the nailing machine of 1st Embodiment when a driver is arrange | positioned in the initial position. It is explanatory drawing which shows typically the whole structure of a nailing machine when the driver is arrange | positioned in a drive-in position. It is the elements on larger scale of FIG. It is a perspective view from the upper direction of a driver. It is a perspective view of a flywheel, a ring member, a holding mechanism, and a press roller when a driver is arrange | positioned in the initial position. FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. It is a block diagram which shows the electric constitution of the nailing machine of 1st Embodiment. It is a flowchart of the implantation control process of 1st Embodiment performed by a controller. It is a flowchart of the 1st control processing performed as a subroutine by driving control processing. It is a flowchart of the 2nd control processing performed as a subroutine by driving control processing. It is an explanatory view showing a driver and a driver drive mechanism which are arranged at a transmission position. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. It is explanatory drawing which shows the driver and driver drive mechanism which are arrange | positioned in a striking position. It is explanatory drawing which shows typically the whole structure of the nailing machine of 2nd Embodiment when a driver is arrange | positioned in the initial position. It is a block diagram which shows the electric constitution of the nailing machine of 2nd Embodiment. It is a flowchart of the implantation control process in 2nd Embodiment. It is a flowchart of the 1st control processing in a 2nd embodiment. It is a flowchart of the 2nd control processing in a 2nd embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First Embodiment
The nailing machine 1 according to the first embodiment will be described below with reference to FIGS. 1 to 13. The nailing machine 1 is an example of a driving tool. The nailing machine 1 is a tool capable of driving a nail 101 into a workpiece (e.g., wood) 100 by straightly punching out a nail 101 as an example of a driving material.

First, a schematic configuration of the nailing machine 1 will be described with reference to FIG. As shown in FIG. 1, the shell of the nailing machine 1 is mainly formed mainly of a tool body 10, a handle 14 and a magazine 17.

The tool body 10 includes a body housing 11 and a nose portion 12. In the main body housing 11, the motor 2, the driver 3, the driver drive mechanism 400, the return mechanism (not shown), and the like are accommodated. The driver 3 is disposed movably along a predetermined operation line L. The driver drive mechanism 400 is a mechanism for causing the nail 101 to be ejected from the nailing machine 1 by moving the driver 3 linearly along the operation line L. The return mechanism is configured to return the driver 3 after striking the nail 101 to its original position. The nose portion 12 is connected to one end of the main body housing 11 in the extending direction of the operation line L (hereinafter simply referred to as the operation line L direction). The nose portion 12 has, at an end opposite to the main body housing 11, an ejection opening 123 through which the nail 101 is punched out. Further, in the nose portion 12, a contact arm 13 capable of advancing and retracting in the direction of the operation line L is disposed. In the body housing 11, a contact arm switch 131 (see FIG. 7) is disposed. The contact arm switch 131 is always maintained in the off state, and is configured to be turned on in response to the pressing of the contact arm 13.

The handle 14 protrudes from the central portion of the main body housing 11 in the direction of the operation line L in a direction intersecting the operation line L. The handle 14 is a portion gripped by the user. At the proximal end of the handle 14 (the end connected to the main housing 11), a trigger 140 configured to allow a pull operation by the operator is provided. A trigger switch 141 is disposed in the handle 14. The trigger switch 141 is always maintained in the off state, and is configured to be turned on in response to the pulling operation of the trigger 140. Further, a battery mounting portion 15 provided with a terminal or the like is provided at the distal end portion (the end portion on the opposite side to the proximal end portion) of the handle 14. A rechargeable battery 19 is removably mounted on the battery mounting portion 15. A controller 18 or the like for controlling the operation of the nailing machine 1 is disposed inside the handle 14 tip.

The magazine 17 is configured to be capable of filling a plurality of nails 101 and is mounted to the nose portion 12. The nails 101 filled in the magazine 17 are supplied one by one on the movement path of the driver by a nail feeding mechanism (not shown). In addition, since the configuration of the magazine 17 is well known, the description thereof is omitted.

In the present embodiment, the nailing machine 1 turns on the contact arm switch 131 by the user pressing the contact arm 13 against the workpiece 100, and then turns on the trigger switch 141 by pulling the trigger 140. Only in the state, the driver 3 starts an operation of driving the nail 101 into the workpiece 100 (hereinafter referred to as a driving operation). That is, the driving operation is not performed only by the pressing operation of the contact arm 13 against the workpiece 100 or only the pulling operation of the trigger 140. In addition, even if the pressing operation of the contact arm 13 is performed after the pulling operation of the trigger 140, the driving operation is not performed. In the following, the pressing operation of the contact arm 13 against the workpiece 100 and the pulling operation of the trigger 140 in order (including the case where two operations are performed almost simultaneously) are also referred to as a start instruction operation of the driving operation.

Hereinafter, the detailed configuration of the nailing machine 1 will be described. In the following description, for convenience, the operation line L direction (left and right direction in FIG. 1) is defined as the front and back direction of the nailing machine 1, and the side provided with the ejection port 123 (right side in FIG. 1) is nailed. The front side of the machine 1 and the opposite side (left side in FIG. 1) are defined as the rear side. Further, a direction (vertical direction in FIG. 1) perpendicular to the direction of the operation line L and corresponding to the extending direction of the handle 14 is defined as the vertical direction of the nailing machine 1, and the proximal end side of the handle 14 (FIG. 1 The upper side is defined as the upper side, and the tip end side (the lower side in FIG. 1) of the handle 14 is defined as the lower side. Further, a direction perpendicular to the front-rear direction and the vertical direction is defined as the left-right direction.

First, with reference to FIG. 1 and FIG. 2, the contact arm 13 and the trigger 140 used for the start instruction operation of the implantation operation will be described.

As shown in FIG. 1, the contact arm 13 is disposed on the upper side of the nose portion 12. More specifically, the contact arm 13 is formed as an elongated member extending in the front-rear direction as a whole. The contact arm 13 is slidably disposed in the front-rear direction along the upper surface of the nose portion 12 so that the front end portion 132 is positioned near the injection port 123. Although not shown in detail, a switch operation rod extending rearward is connected to the rear end of the contact arm 13. The contact arm switch 131 (see FIG. 7) is disposed on the rear side of the switch operating rod.

The contact arm 13 is urged forward by an elastic member (for example, a compression coil spring) (not shown), and the front end 132 is an ejection opening 123 as shown in FIG. 1 when no external force is applied from the front. It is held in the initial position that projects more forward. At this time, the switch operating rod does not act on the contact arm switch 131, and the contact arm switch 131 is maintained in the OFF state. On the other hand, as shown in FIG. 2, when the front end 132 is pressed against the workpiece 100 by the user, the contact arm 13 moves rearward against the biasing force of the elastic member. When the contact arm 13 moves to a predetermined position (hereinafter referred to as an on position) behind the initial position in response to the pressing, the contact arm switch 131 is pressed by the rear end of the switch operating rod and switched to the on state. The contact arm switch 131 is connected to the controller 18 via a wire (not shown), and outputs a signal corresponding to the on state or the off state to the controller 18.

In the present embodiment, in order to prevent the contact arm 13 from being pushed backward by an unexpected external force, the rear side portion of the contact arm 13 (a portion protruding upward from the upper surface of the nose portion 12) is , Is covered by a contact arm cover 9.

As shown in FIG. 1, the trigger 140 is disposed at the upper front end of the handle 14. The trigger 140 is always urged forward by an elastic member (for example, a compression coil spring), and is held at the initial position shown in FIG. 1 when no external force is applied from the front. At this time, the trigger 140 does not act on the trigger switch 141, and the trigger switch 141 is maintained in the off state. On the other hand, as shown in FIG. 2, when the trigger 140 is pulled by the user, the trigger 140 moves rearward against the biasing force of the elastic member. When the trigger 140 moves to a predetermined position (hereinafter referred to as an on position) behind the initial position according to the pulling operation, the trigger switch 141 is pressed by the rear end of the trigger 140 and switched to the on state. The trigger switch 141 is connected to the controller 18 via a wire (not shown), and outputs a signal corresponding to the on state or the off state to the controller 18.

Next, the motor 2, the driver 3, and the driver drive mechanism 400 housed inside the main body housing 11 will be described in order.

First, the motor 2 will be described. As shown in FIG. 3, the motor 2 is accommodated in the rear lower portion of the main body housing 11. Further, the motor 2 is disposed such that the rotation axis of the output shaft (not shown) extends in the left-right direction orthogonal to the operation line L. In the present embodiment, a brushless DC motor is employed as the motor 2 because of its small size and high output. Connected to the output shaft of the motor 2 is a pulley 21 that rotates integrally with the output shaft. In the present embodiment, the drive of the motor 2 is controlled by the controller 18 (see FIG. 1). Details of control of the motor 2 will be described later.

The driver 3 will be described. As shown in FIG. 4, the driver 3 is an elongated member, and is formed in a symmetrical shape with respect to the major axis. The driver 3 includes a main body portion 30, a striking portion 31, and a pair of arm portions 35 projecting leftward and rightward from the rear of the main body portion 30. The main body portion 30 is a portion formed in a generally rectangular thin plate shape as a whole. The striking portion 31 is formed to be narrower in width in the left-right direction than the main body portion 30 and extends forward from the front end of the main body portion 30. The pair of arm portions 35 is a portion that protrudes from the rear of the main body portion 30 to the left and right.

The main body portion 30 is a portion which is pressed by a pressing roller 83 (see FIG. 3) described later and frictionally engaged with the ring member 5 (see FIG. 3). The main body portion 30 has a pair of roller contact portions 301, a lever contact portion 305, and a pair of ring engagement portions 306. Hereinafter, these parts will be described in order.

The pair of roller contact portions 301 is integrally formed on the main body portion 30 so as to protrude upward from the upper surface of the main body portion 30 and extend in the front-rear direction along the left and right ends of the main body portion 30. The surface portion formed at the projecting end (upper end) of the roller contact portion 301 is formed as an abutment surface that abuts on the outer peripheral surface of the pressing roller 83. Further, a front end portion of the roller contact portion 301 is formed as an inclined portion 302 whose height (thickness in the vertical direction) gradually increases toward the rear. On the other hand, the rear side portion of the inclined portion 302 of the roller contact portion 301 has a constant height. The lever contact portion 305 is provided to project upward from the upper surface of the main body 30, and extends in the left-right direction so as to connect the left and right roller contact portions 301 at the rear of the main body 30. The lever contact portion 305 is a portion on which a push lever 711 described later comes in contact from behind.

The pair of ring engagement portions 306 are integrally formed on the main body portion 30 so as to protrude downward from the lower surface of the main body portion 30 and extend in the front-rear direction along the left and right end portions of the main body portion 30 . The front end portion of the ring engagement portion 306 is formed as a sloped portion 307 whose height (thickness in the vertical direction) gradually increases toward the rear. In the pair of ring engaging portions 306, engaging grooves 308 engageable with outer peripheral engaging portions 51 of two ring members 5 described later are formed. Each engagement groove 308 is formed to be recessed upward from the projecting end of the ring engagement portion 306, and extends in the front-rear direction along the entire length of the ring engagement portion 306. Also, the engagement groove 308 has a width in the left and right direction narrowed upward (in other words, the wall surface of the ring engagement portion 306 defining the engagement groove 308 approaches upward) ) (See FIG. 6). The engagement between the driver 3 and the ring member 5 will be described in detail later.

The rear end 32 of the main body 30 defines the rear end of the driver 3. The rear end 32 abuts on the rear stopper portion 118 (see FIG. 1) fixed in the rear end portion of the main body housing 11 to restrict the driver 3 from moving further backward. The front end 310 of the striking portion 31 defines the front end of the driver. The front end 310 is a part that strikes the head of the nail 101 (see FIG. 1) and strikes the nail 101 forward and into the workpiece 100.

The pair of arm portions 35 project to the left and right of the main body portion 30. The arm portion 35 is a portion that restricts the driver 3 from moving further forward by abutting on a pair of front stopper portions 117 (see FIG. 2) fixed inside the front end portion of the main body housing 11. In addition, although detailed description and illustration are abbreviate | omitted, the arm part 35 is connected to the return mechanism by the connection member. In the nailing machine 1 of the present embodiment, any known configuration may be employed as the return mechanism. For example, the driver 3 moved forward to the driving position is configured to be pulled back to the initial position along the operating line L by the elastic force of an elastic member (for example, a compression coil spring or a torsion coil spring) via the connection member. A mechanism can be employed.

The driver 3 configured as described above is arranged such that the major axis thereof extends in the front-rear direction of the nailing machine 1 along the operation line L. Further, the driver 3 is held so as to be movable along the operation line L (which is rephrased in the back and forth direction of the nailing machine 1 or in the long axis direction of the driver 3).

Here, with reference to FIG. 1 and FIG. 2, the initial position and driving position of the driver 3 are demonstrated. The initial position is a position at which the driver 3 is held in a state where the driver driving mechanism 400 is not operating (hereinafter referred to as an initial state). In the present embodiment, as shown in FIG. 1, the initial position of the driver 3 is set such that the rear end 32 of the driver 3 abuts on the rear stopper portion 118. The driving position is a position where the driver 3 moved forward by the driver drive mechanism 400 drives the nail 101 into the workpiece. In the present embodiment, as shown in FIG. 2, the driving position of the driver 3 is set to a position where the front end 310 of the driver 3 slightly protrudes from the injection port 123. The driving position is also a position where the front ends of the pair of arm portions 35 abut against the pair of front stopper portions 117 from the rear. From the above arrangement, in the present embodiment, the initial position and the drive position can be reworded as being the rearmost position and the foremost position defining both ends of the movable range of the driver 3.

The detailed configuration of the driver drive mechanism 400 will be described. As shown in FIG. 3, in the present embodiment, the driver drive mechanism 400 includes a flywheel 4, two ring members 5, a holding mechanism 6, an operating mechanism 7, and a pressing mechanism 8. The details of these configurations will be sequentially described below. In FIG. 1 and FIG. 3 to be referred to below, for convenience of explanation, a part of a ring member 5 described later is illustrated in a broken state.

First, the flywheel 4 will be described. As shown in FIG. 3, the cylindrically formed flywheel 4 is rotatably supported on the front side of the motor 2 in the main body housing 11. The flywheel 4 is rotationally driven by a motor 2 around a rotation axis A1. The rotation axis A <b> 1 extends in the left-right direction orthogonal to the operation line L of the driver 3 in parallel with the rotation axis of the motor 2. Connected to the support shaft of the flywheel 4 is a pulley 41 that rotates integrally with the flywheel 4. A belt 25 is stretched over the pulleys 21 and 41. Therefore, when the motor 2 is driven, the rotation of the motor 2 is transmitted to the flywheel 4 via the belt 25 and the flywheel 4 rotates in the clockwise direction of FIG. Further, as shown in FIG. 5 and FIG. 6, a pair of engagement grooves 47 extending over the entire circumference of the flywheel 4 is formed on the outer circumference 45 of the flywheel 4. The ring member 5 can be engaged with the engagement groove 47. The engagement groove 47 is formed such that the width in the left-right direction narrows inward in the radial direction of the flywheel 4.

The ring member 5 will be described. As shown in FIG. 3, each ring member 5 is formed in a ring shape having a diameter larger than that of the flywheel 4. In the present embodiment, the inner diameter of the ring member 5 is set to be larger than the outer diameter of the flywheel 4 (strictly, the diameter from the rotation axis A1 of the flywheel 4 to the bottom of the engagement groove 47). As shown in FIG. 5, the two ring members 5 are disposed radially outward with respect to a pair of engagement grooves 47 provided on the outer periphery 45 of the flywheel 4. In the present embodiment, the two ring members 5 are separated from the outer circumference 45 (more specifically, the engagement groove 47) of the flywheel 4 by the holding mechanism 6 described later, and the outer circumference 45 (engagement groove 47) Is held movably between a contact position at which one of the two contacts with the other.

Each ring member 5 is a transmission member for transmitting the rotational energy of the flywheel 4 to the driver 3, and is configured to be frictionally engageable with the driver 3 and the flywheel 4. Specifically, as shown in FIG. 6, the engagement groove 308 of the driver 3 and the engagement groove 47 of the flywheel 4 can be engaged with the outer peripheral portion and the inner peripheral portion of the ring member 5, respectively. An outer circumferential engagement portion 51 and an inner circumferential engagement portion 53 are provided. The outer circumferential engagement portion 51 is formed as a convex portion that protrudes outward in the radial direction of the ring member 5, while the inner circumferential engagement portion 53 is a convex portion that protrudes inward in the radial direction of the ring member 5. It is formed. The cross-sectional shape in the radial direction of the ring member 5 is formed in a substantially hexagonal shape, and the outer peripheral engagement portion 51 is formed so as to decrease in thickness toward the radial outer side of the ring member 5; The inner circumferential engagement portion 53 is formed such that the thickness in the axial direction decreases toward the inner side in the radial direction of the ring member 5. That is, the outer peripheral engaging portion 51 and the inner peripheral engaging portion 53 are each formed in a tapered shape in cross section toward the tip. The engagement between the ring member 5 and the driver 3 and the flywheel 4 will be described in detail later.

The holding mechanism 6 will be described. The holding mechanism 6 holds the ring member 5 movably between a separated position separated from the outer periphery 45 (engagement groove 47) of the flywheel 4 and a contact position contacting the outer periphery 45 (engagement groove 47). It is configured to As shown in FIGS. 3 and 5, the holding mechanism 6 of the present embodiment is configured by a pair of ring urging portions 60 and a pair of stoppers 66. The pair of ring urging portions 60 are disposed obliquely forward and obliquely downward with respect to the ring member 5 and rotatably support the ring member 5 in a state of being urged upward from the lower side by a plate spring. . The pair of stoppers 66 are respectively disposed below the driver 3 and obliquely upward and obliquely upward with respect to the ring member 5 and allow the ring member 5 to rotate while moving the ring member 5 upward. Is configured to regulate.

Here, a manner of holding the ring member 5 by the holding mechanism 6 will be described. As shown in FIG. 5, in the initial state, the ring urging portion 60 abuts on the ring member 5 from below and urges the ring member 5 upward, while the stopper 66 abuts on the ring member 5 from above It contacts and controls the ring member 5 to move further upward. Thereby, as shown in FIG. 6, the ring member 5 is held at the separated position separated from the outer periphery 45 (engagement groove 47) over the entire circumference of the flywheel 4. Although only the upper end portion of the flywheel 4 is illustrated, the ring member 5 extends from the outer periphery 45 of the flywheel 4 (more specifically, the engagement groove 47) over the entire periphery of the flywheel 4 It is separated. On the other hand, although the details will be described later, when the ring member 5 is pressed downward by the driver 3 as the driver 3 is moved forward by the actuating mechanism 7, the urging force of the ring urging portion 60 is resisted. As a result, the ring member 5 moves downward. And the ring member 5 will be hold | maintained in the contact position which contacts the outer periphery 45 (engaging groove 47) in the upper part of the flywheel 4 (refer FIG. 12).

The operating mechanism 7 will be described. As shown in FIG. 3, the actuating mechanism 7 is disposed above the driver 3 and rearward of the flywheel 4 in the body housing 11. The operating mechanism 7 is a mechanism configured to move the driver 3 disposed at the initial position to a transmission position described later. In the present embodiment, the actuating mechanism 7 mainly includes a solenoid 715 having a rod movable forward and backward, and a push lever 711 rotated by the rod of the solenoid 715. The pushing lever 711 is rotatably supported at one end. In the initial state, the other end of the push lever 711 is held obliquely upward and rearward with respect to the lever contact portion 305 of the driver 3 by the tension coil spring 713. When the solenoid 715 is actuated, the push lever 711 is pivoted downward against the biasing force of the tension coil spring 713. Along with this, the tip of the push-out lever 711 pushes the lever contact portion 305 from the rear to the front, thereby moving the driver 3 forward (see FIG. 11). In the present embodiment, the operation of the solenoid 715 is controlled by the controller 18 (see FIG. 1). Details of control of the solenoid 715 will be described later.

The pressing mechanism 8 will be described. As shown in FIG. 3, the pressing mechanism 8 is disposed in the main housing 11 so as to face the driver 3 on the opposite side of the flywheel 4 in the facing direction of the flywheel 4 and the driver 3. The pressing mechanism 8 presses the driver 3 toward the ring member 5 (that is, in a direction approaching the flywheel 4) in the process of moving the driver 3 forward from the initial position, so that the fly through the ring member 5 is performed. It is configured to enable transmission of rotational energy from the wheel 4 to the driver 3. As shown in FIGS. 3 and 6, in the present embodiment, the pressing mechanism 8 includes a roller support member 81, a pressing roller 83 rotatably supported by the roller support member 81, and a holder supported by the main body housing 11. And 85, and an elastic member 87 disposed between the roller support member 81 and the holder 85. Hereinafter, the details of these constituent members will be described in order.

The roller support member 81 includes a spring holding portion 811, a spring receiving portion 813, and a roller support portion 815. The spring holding portion 811 is a portion forming an upper portion of the roller support member 81 formed in a cylindrical shape whose axial direction is the vertical direction. The spring receiving portion 813 is a flange-like portion protruding radially outward from the lower end portion of the spring holding portion 811. The roller support portion 815 is a portion that projects downward from the spring receiving portion 813 and that constitutes the lower portion of the roller support member 81. The roller support portion 815 rotatably supports the left and right pressing rollers 83 via a roller shaft 84 extending in the left-right direction.

The holder 85 is supported by the main body housing 11 and holds the roller support member 81 so as to be relatively movable in the vertical direction. In the present embodiment, the holder 85 includes an accommodating portion 851, a spring receiving portion 853, and a stopper portion 854. The housing portion 851 is formed in a substantially cylindrical shape, and has a housing space 852 in which a part of the roller support member 81 and the elastic member 87 can be housed (see FIG. 6). The spring receiving portion 853 is constituted by an upper wall portion covering the upper portion of the accommodation portion 851. A through hole having substantially the same diameter as the cylindrical spring holding portion 811 of the roller support member 81 is formed at the central portion of the spring receiving portion 853. The spring holding portion 811 is vertically movable in the through hole. The stopper portion 854 protrudes radially inward from the lower end portion of the housing portion 851.

The elastic member 87 is disposed between the roller support member 81 and the holder 85 in an interposed manner. In the present embodiment, the elastic member 87 is constituted by four disc springs arranged in series on the outer periphery of the spring holding portion 811 of the roller support member 81. The roller support member 81 is disposed in the housing portion 851 (housing space 852) of the holder 85 in a state in which the elastic member 87 is externally fitted to the spring holding portion 811. The elastic member 87 is disposed between the spring receiving portion 853 of the holder 85 and the spring receiving portion 813 of the roller support member 81 in a slightly compressed state. Thus, when an external force is not applied to push the roller support member 81 upward via the pressing roller 83, the spring receiving portion 813 is biased downward by the elastic force of the elastic member 87, and the stopper portion 854 is pressed from above. It is held in the state of contact. That is, the downward movement of the roller supporting member 81 and the pressing roller 83 is restricted by the stopper portion 854, and the roller supporting member 81 and the pressing roller 83 are held at the lowermost position.

Hereinafter, the electrical configuration of the nailing machine 1 will be described. As shown in FIG. 7, the nailing machine 1 includes a controller 18 that controls the operation of the nailing machine 1. In the present embodiment, the controller 18 is configured as a microcomputer including a CPU, a ROM, a RAM, a timer, and the like. A three-phase inverter 201 and a Hall sensor 203 are electrically connected to the controller 18. In the present embodiment, the three-phase inverter 201 includes a three-phase bridge circuit using six semiconductor switching elements. The three-phase inverter 201 performs switching operation on each switching element of the three-phase bridge circuit according to the duty ratio indicated by the control signal from the controller 18 to make the motor 2 pulse current (drive pulse) according to the duty ratio. Supply. The controller 18 and the three-phase inverter 201 are mounted on the substrate 180 and accommodated in the lower end of the handle 14 (see FIG. 1). The Hall sensor 203 includes three Hall elements arranged corresponding to each phase of the motor 2 and is configured to output a signal indicating the rotation angle of the rotor of the motor 2.

Further, to the controller 18, a contact arm switch 131, a trigger switch 141, and a solenoid 715 of the operating mechanism 7 are electrically connected. As described above, the contact arm switch 131 and the trigger switch 141 respectively output signals corresponding to the on state or the off state to the controller 18. In the present embodiment, the controller 18 appropriately outputs a control signal to the three-phase inverter 201 and the solenoid 715 based on the signals from the contact arm switch 131 and the trigger switch 141 so that the motor 2 and the solenoid 715 are Control the operation.

Here, an outline of control of the motor 2 and the solenoid 715 in the present embodiment will be described. First, in the present embodiment, as described above, as long as the user does not issue a start instruction operation to start the striking operation, that is, as long as the trigger switch 141 is not turned on after the contact arm switch 131 is turned on. , The driving operation is not started. When the user performs the pressing operation of the contact arm 13 and the pulling operation of the trigger 140 at almost the same time in this order, it is appropriate as a start instruction operation of the driving operation. On the other hand, it takes some time after driving the motor 2 in order to store rotational energy sufficient to enable the driver 3 to drive the nail 101 into the flywheel 4. For this reason, when the driving of the motor 2 is started in response to the contact arm switch 131 being turned on, there is a possibility that the driving operation can not be started immediately after the start operation of starting the driving operation. Therefore, in the present embodiment, by using the trigger switch 141 as the start switch of the motor 2, it is possible to start the driving of the motor 2 in advance before the start instruction operation of the driving operation.

Specifically, when the trigger switch 141 is turned on when the motor 2 is not driven, the controller 18 recognizes this as an input of a start instruction of the motor 2 and starts driving the motor 2. Thereafter, when the trigger switch 141 is turned on after the contact arm switch 131 is turned on, the controller 18 recognizes this as an input for instructing the start of the implanting operation, and operates the solenoid 715. The driver 3 starts the driving operation. Further, even when the contact arm switch 131 is turned on when the motor is not driven, the controller 18 recognizes this as the input of the start instruction of the motor 2 and starts the driving of the motor 2. In this case, when the trigger switch 141 is subsequently turned on, the controller 18 recognizes this as an input of the start instruction of the driving operation, operates the solenoid 715, and starts the driving operation in the driver 3 Let

The details of the driving control process executed by the controller 18 (specifically, the CPU) and the specific operation of the nailing machine 1 during processing will be described below with reference to FIGS. 8 to 13. The driving control process shown in FIGS. 8 to 10 is started when the power supply to the nailing machine 1 is started by mounting the battery 19 on the battery mounting unit 15, and when the power supply is stopped. It is finished. In the following description and drawings, each “step” in process is abbreviated as “S”. Further, in the figure, "switch" is also abbreviated as "SW".

At the start of the implantation control process, the contact arm 13 and the trigger 140 are both in the initial position, and the contact arm switch 131 and the trigger switch 141 are both in the off state. The motor 2 is in a non-driven state where it is not driven. As shown in FIG. 1, the driver 3 is returned to the initial position and held by the return mechanism. As shown in FIG. 6, the ring member 5 is held by the holding mechanism 6 at a slightly separated position radially outward from the outer circumference 45 (more specifically, the engagement groove 47) of the flywheel 4. At this time, the pressure roller 83 is held at the lowermost position and is in sliding contact with the front end portion of the main body portion 30 of the driver 3 from above, but it is not in the state of pressing the driver 3 downward. In this state, the ring member 5 is held at a position apart from the driver 3 as well. More specifically, the ring member 5 is held at a position where the outer peripheral engagement portion 51 is slightly separated from the engagement groove 308 of the driver 3.

As shown in FIG. 8, the controller 18 first determines whether the trigger switch 141 is turned on (S1). When the user pulls the trigger 140 to the on position and the trigger switch 141 is turned on (S1: YES), the controller 18 recognizes this as the input of the motor 2 start instruction (drive start instruction). , And shifts to a first control process described later (S3 and FIG. 9). On the other hand, when the trigger switch 141 is not in the on state (S1: NO), the controller 18 determines whether the contact arm switch 131 is in the on state (S2). When the contact arm switch 131 is also in the OFF state (S2: NO), the controller 18 returns to the process of S1. When the contact arm 13 is pressed against the workpiece 100 by the user and retracted to the on position and the contact arm switch 131 is turned on (S2: YES), the controller 18 shifts to the second control process described later (S4 and FIG. 10). The on / off states of the trigger switch 141 and the contact arm switch 131 recognized by the controller 18 are stored, for example, by setting or clearing flags corresponding to the respective switches.

Hereinafter, the first control process will be described. As shown in FIG. 9, when shifting to the first control process, the controller 18 first starts driving the motor 2 in response to the input of the start instruction of the motor 2 (S31). Specifically, the controller 18 starts energization of the motor 2 via the three-phase inverter 201. The motor 2 rotationally drives the flywheel 4 to start storing rotational energy. At this stage, since the ring member 5 is disposed at the separated position, the rotational energy of the flywheel 4 can not be transmitted to the driver 3. Therefore, even if the flywheel 4 rotates, the ring member 5 and the driver 3 do not operate.

The controller 18 stands by while the trigger switch 141 is not turned off (S32: NO, S32). Note that even if the contact arm switch 131 is turned on during this time, the controller 18 invalidates it and the process does not proceed. That is, the controller 18 does not proceed with the process unless the pull operation of the trigger 140 is released once. When the trigger switch 141 is turned off (S32: YES), the controller 18 determines whether a predetermined time has elapsed since the trigger switch 141 was turned off (S33). This determination is performed, for example, by measuring an elapsed time after the trigger switch 141 is turned off by a timer and comparing a predetermined time stored in advance in the ROM with the elapsed time. In addition, although predetermined time is not specifically limited, 5 seconds are employ | adopted as an example of predetermined time in this embodiment.

The controller 18 stands by while the predetermined time does not elapse and the contact arm switch 131 is not turned on (S33: NO, S34: NO). Driving of the motor 2 is continued also during this period. When the contact arm switch 131 is in the OFF state and the predetermined time has elapsed (S34: NO, S33: YES), the controller 18 stops the driving of the motor 2 by stopping the energization of the motor 2 (S34: NO). S37). Along with this, the rotation of the flywheel 4 is stopped. The controller 18 ends the first control process and returns to the drive control process (see FIG. 8), and waits until the trigger switch 141 or the contact arm switch 131 is turned on (S1 to S2).

If the contact arm switch 131 is turned on before the predetermined time elapses (S33: NO, S34: YES), the controller 18 determines whether the trigger switch 141 is turned on (S35) . If the trigger switch 141 is not turned on (S35: NO), the controller 18 continues monitoring until a predetermined time elapses (S33: NO, S34: YES, S35). Driving of the motor 2 is continued also during this period. When the predetermined time has passed with the trigger switch 134 turned off (S35: NO, S33: YES), the controller 18 stops the driving of the motor 2 (S37), and ends the first control process.

When the contact arm switch 131 is turned on and the trigger switch 141 is turned on before the predetermined time elapses (S33: NO, S34: YES, S35: YES), a start instruction of the driving operation is given. It means that it was input. Then, the controller 18 operates the solenoid 715 (S36). The controller 18 specifies the rotational speed of the motor 2 (and consequently the flywheel 4) based on the signal output from the Hall sensor 203. If the controller 18 determines that sufficient rotational energy is stored in the flywheel 4 based on the rotational speed, it immediately operates the solenoid 715, otherwise after sufficient rotational energy is stored. , Operate the solenoid 715. In the present embodiment, after the driving of the motor 2 is started in S31 in response to the user's start instruction operation of the motor 2, the start instruction operation of the driving operation of the user Sufficient rotational energy can be stored until the pull operation 140) is performed. Therefore, the controller 18 can operate the solenoid 715 substantially immediately in response to the start instruction operation of the driving operation.

By the operation of the solenoid 715, the push-out lever 711 is pivoted, and the rear end portion of the push-out lever 711 presses the lever contact portion 305 of the driver 3 from the rear to the front. The driver 3 starts moving forward along the operation line L from the initial position toward the driving position. The driver 3 also moves relative to the ring member 5 held at the separated position.

The pressure roller 83 abuts from the front on the contact surface of the inclined portion 302 whose thickness gradually increases toward the rear. As the inclined portion 302 is moved forward while being pressed by the pressing roller 83, a part of the outer peripheral engaging portion 51 of the ring member 5 enters the engaging groove 308 (see FIG. 6) of the driver 3, It abuts on the open end of the engagement groove 308. The outer peripheral engaging portion 51 is formed by the inclined portion 307 being formed at the front end portion of the ring engaging portion 306 and the width in the left and right direction of the engaging groove 308 being wider at the open end side. , And can smoothly enter the engagement groove 308. When the driver 3 further moves forward with the pressure roller 83 in contact with the contact surface of the inclined portion 302 and a part of the outer peripheral engagement portion 51 in contact with the opening end of the engagement groove 308, the inclined portion 302 Acts as a cam and also exerts a wedge effect. For this reason, the ring member 5 held at the separated position is pushed downward against the biasing force of the plate spring of the ring biasing unit 60. At the same time, the pressure roller 83 held at the lowermost position is pushed upward against the elastic force of the elastic member 87.

When the driver 3 further moves forward and reaches the transmission position shown in FIG. 11, a part of the inner peripheral engaging portion 53 of the ring member 5 moved downward is engaged with the flywheel 4 as shown in FIG. The ring member 5 enters the mating groove 47 and abuts on the open end of the engagement groove 47, and the ring member 5 is in a state in which the further downward movement is prohibited. At this time, the ring member 5 is rotatably supported at the lowermost position by the ring urging portion 60 in a state of being separated from the stopper 66, and only a part of the inner peripheral engaging portion 53 is It abuts. That is, the ring member 5 is held at the contact position by the holding mechanism 6. Further, the ring member 5 is pressed against the flywheel 4 via the driver 3 by the elastic force of the elastic member 87 compressed by the pressing roller 83 being pushed up by the inclined portion 302. For this reason, at the open end of the engagement groove 308 of the driver 3, the driver 3 and a part of the outer peripheral engagement portion 51 of the ring member 5 are put in frictional engagement. Further, at the open end of the engagement groove 47 of the flywheel 4, a part of the flywheel 4 and the inner peripheral engagement portion 53 of the ring member 5 is placed in a frictional engagement state.

Thus, by placing the ring member 5 in frictional engagement with the driver 3 and the flywheel 4, the driver 3 can transmit the rotational energy of the flywheel 4 via the ring member 5 It becomes. The “frictional engagement state” refers to a state in which two members are engaged with each other by a frictional force (including a sliding state). The ring member 5 is rotated around the rotation axis A2 by the flywheel 4 in a state where only a portion of the inner peripheral engagement portion 53 of the ring member 5 pressed against the flywheel 4 by the driver 3 is frictionally engaged with the flywheel 4 Will be rotated. In the present embodiment, as shown in FIG. 11, the ring member 5 is formed larger in diameter than the flywheel 4, and the inner diameter of the ring member 5 is the outer diameter of the flywheel 4 (strictly, the flywheel The diameter from the rotation axis A1 of 4 to the bottom of the engagement groove 47). For this reason, the rotation axis A2 of the ring member 5 is different from the rotation axis A1 of the flywheel 4 and is located below the rotation axis A1 (in the direction away from the driver 3). The rotation axis A2 extends parallel to the rotation axis A1. The ring member 5 pushes the driver 3 in a state of frictional engagement with the ring member 5 forward from the transmission position shown in FIG.

When the driver 3 is pushed forward from the transmission position, as shown in FIG. 13, when the pressure roller 83 abuts on the contact surface of the roller abutment portion 301 on the rear side of the inclined portion 302, the pressure roller 83 Is pushed up to the top position. The ring member 5 is further pressed against the flywheel 4 through the driver 3 by the elastic force of the elastic member 87. Therefore, the driver 3 and a part of the outer peripheral engaging part 51, and the flywheel 4 and a part of the inner peripheral engaging part 53 are in a state of being more strongly frictionally engaged. Thereby, the ring member 5 can transmit the rotational energy of the flywheel 4 to the driver 3 more efficiently. FIG. 13 shows a state where the driver 3 is disposed at the striking position where the driver 3 strikes the nail 101 (see FIG. 1). The controller 18 operates the solenoid 715 in S36 of the first control process (see FIG. 9), and then supplies a current to the solenoid 715 when a predetermined time required for the driver 3 to reach the striking position has elapsed. To return the push lever 711 to its initial position.

The driver 3 reaches the striking position, strikes the nail 101, and further moves to the striking position shown in FIG. 2 to drive the nail 101 into the workpiece 100. When the front end of the arm 35 of the driver 3 abuts on the front stopper 117 from the rear, the movement of the driver 3 is stopped. Along with this, a return mechanism (not shown) operates to return the driver 3 to the initial position.

As shown in FIG. 9, after activating the solenoid 715 in S36, the controller 18 returns to the process of determining whether the trigger switch 141 is turned off (S32). During this time, the driving of the motor 2 is continued. When the trigger switch 141 is turned off (S32: YES), as described above, the controller 18 returns to the process of determining whether the contact arm switch 131 and the trigger switch 141 are turned on (S33 to S35). ). Before the predetermined time elapses, when the user performs the start instruction operation of the driving operation again and the contact arm switch 131 and the trigger switch 141 are turned on, the controller 18 operates the solenoid 715 to drive the driver 3. The operation is performed (S33: NO, S34: YES, S35: YES, S36). Although the rotational energy temporarily stored in the flywheel 4 is decreased by the previous driving operation, as described above, the driving of the motor 2 is continued until the next driving operation start instruction operation, and the flywheel 4 is The rotational energy is stored. For this reason, the controller 18 can operate the solenoid 715 substantially immediately even after the start of the motor 2 for the start instruction operation of the second and subsequent driving operations.

After the trigger switch 141 is turned off, when a predetermined time elapses (S33: YES), the controller 18 stops the drive of the motor 2 by stopping the energization of the motor 2 (S37). Along with this, the rotation of the flywheel 4 is stopped. The controller 18 ends the first control process and returns to the drive control process (see FIG. 8), and waits until the trigger switch 141 or the contact arm switch 131 is turned on (S1 to S2).

Hereinafter, the second control process will be described. In addition, since the operation itself of the driver drive mechanism 400 and the driver 3 by the drive of the motor 2 and the operation of the solenoid 715 is basically the same as the first control process, the operation of the controller 18 (specifically the CPU) Mainly. As shown in FIG. 10, when shifting to the second control processing, the controller 18 first starts driving the motor 2 in response to the input of the start instruction of the motor 2 (S41). While the trigger switch 141 is in the off state and the contact arm switch 131 is in the on state, the controller 18 stands by until any switch is switched (S42: NO, S43: NO).

Since the contact arm switch 131 is already in the on state, when the trigger switch 141 is in the on state (S42: YES), the controller 18 recognizes that the start instruction of the driving operation is input, and operates the solenoid 715. (S44). In the second control process, sufficient rotational energy is accumulated in the flywheel 4 when the pressing operation of the contact arm 13 against the workpiece and the pulling operation of the trigger 140 are performed almost simultaneously. It may not be. In this case, the controller 18 activates the solenoid 715 after sufficient rotational energy has been stored. As in the second control process, the controller 18 stops the current supply to the solenoid 715 when a predetermined time required for the driver 3 to reach the striking position has elapsed.

After operating the solenoid 715, the controller 18 stands by until the contact arm switch 131 is turned off (S45: NO). That is, the controller 18 does not proceed with the process unless the pressing operation of the contact arm 13 is released once. When the contact arm switch 131 is turned off (S45: YES), the controller 18 determines whether a predetermined time has elapsed since the contact arm switch 131 was turned off (S46). Even when the contact arm switch 131 is turned off with the trigger switch 141 turned off after the start of driving of the motor 2 (S42: NO, S43: YES), the controller 18 shifts to the process of S46. The controller 18 stands by while the predetermined time has not passed and the contact arm switch 131 is not turned on (S46: NO, S47: NO). The predetermined time used in S46 may be the same as or different from the first control process. In the present embodiment, the same five seconds as the first control process are employed as an example of the predetermined time.

If the contact arm switch 131 is turned on again before the predetermined time elapses (S46: NO, S47: YES), the controller 18 returns to the determination of whether the trigger switch 141 is turned on (S46). S42). When the trigger switch 141 is turned on, the controller 18 recognizes that the start instruction of the driving operation has been input, operates the solenoid 715 again, and causes the driver 3 to perform the driving operation (S42: YES, S44). ). As described above, since the driving of the motor 2 is continued from the previous driving operation and sufficient rotational energy is stored, the solenoid 715 is substantially turned on when the trigger switch 141 is turned on. It is activated immediately.

On the other hand, when the predetermined time has passed without the contact arm switch 131 being turned on (S47: NO, S46: YES), the controller 18 stops the driving of the motor 2 (S48). The controller 18 ends the second control process and returns to the drive control process (see FIG. 8), and stands by until the trigger switch 141 or the contact arm switch 131 is turned on (S1 to S2).

As described above, the first control process in the present embodiment is started when the trigger switch 141 is turned on (that is, when the user pulls the trigger 140) when the motor 2 is not driven. Then, after driving of the motor 2 is started, when the contact arm switch 131 and the trigger switch 141 are sequentially turned on (that is, the user sequentially performs the pressing operation of the contact arm 13 and the pulling operation of the trigger 140). And the solenoid 715 is actuated, and the driver 3 performs a driving operation. Therefore, the user pulls the trigger 140 in advance to start driving of the motor 2 and thereafter specifies the position where the nail 101 is driven in, and the pressing operation of the contact arm 13 and the pulling operation of the trigger 140 Sufficient rotational energy can be accumulated in the flywheel 4 until (the start instruction operation of the driving operation) is completed. Therefore, the nailing machine 1 can start the driving operation of the driver 3 promptly after the start instruction operation of the driving operation is completed. In particular, even when the pressing operation of the contact arm 13 and the pulling operation of the trigger 140 are performed almost simultaneously as the start instruction operation of the driving operation, the driving operation can be started promptly. That is, it is possible to improve the responsiveness of the start of the driving operation of the driver 3 to the start instruction operation of the driving operation.

In addition, once the motor 2 is driven, the driving of the motor 2 is continued until a predetermined time elapses after the trigger switch 141 is turned off even after the driving operation is performed. That is, during this time, the state of storing rotational energy in the flywheel 4 is maintained. Therefore, the user can start the second and subsequent driving operations promptly by newly performing the starting operation of starting the driving operation during this period. That is, the user can carry out a plurality of driving operations continuously in a short time.

On the other hand, the second control process in the present embodiment is started when the contact arm switch 131 is turned on while the motor 2 is not driven (that is, when the user presses the contact arm 13). Then, after the driving of the motor 2 is started, when the trigger switch 141 is turned on (in other words, when the user pulls the trigger 140), the solenoid 715 is activated and the driver 3 performs the driving operation. To be done. In addition, once the motor 2 is driven, the driving of the motor 2 is continued until a predetermined time elapses after the contact arm switch 131 is turned off even after the driving operation is performed. Therefore, according to the second control process, although the start of the first driving operation is slightly delayed compared to the first control processing depending on the accumulation state of the rotational energy of the flywheel 4, the start of the second and subsequent driving operations In the case where the instruction is performed while the driving of the motor 2 is continued, the responsiveness of the start of the driving operation of the driver 3 to the start instruction operation of the driving operation can be improved as in the first control processing.

In the present embodiment, as described above, the start instruction of the motor 2 can be input from the trigger switch 141 and the contact arm switch 131, and the motor 2 and the solenoid are controlled in the first control process and the second control process respectively. Control of 715 is performed. As described above, the convenience of the nailing machine 1 is enhanced by diversification of the start instruction of the motor 2 and the start instruction of the driving operation. The user may pull the trigger 140 in advance to start driving the motor 2, and then may perform the pressing operation of the contact arm 13 and the pulling operation of the trigger 140. The driving of the trigger 140 may be started, and then the trigger 140 may be pulled.

Further, in the present embodiment, one trigger switch 141 is also used as a switch for inputting a start instruction of the motor 2 and a switch for inputting a start instruction of a driving operation. Therefore, the user can easily realize the start instruction operation of the motor 2 and the start instruction operation of the driving operation by the pull operation of the trigger 140 which is the same member. Moreover, the increase in the number of parts of the nailing machine 1 can be avoided. Further, in the present embodiment, when the trigger switch 141 is turned on when the motor 2 is not driven, the controller 18 determines that the drive start instruction of the motor 2 is input, and contacts the drive 2 when the motor 2 is driven. When the trigger switch 141 is turned on after the arm switch 131, it is determined that the start instruction of the driving operation is input, thereby realizing appropriate control corresponding to each case.

Second Embodiment
The nailing machine 1A according to the second embodiment will be described below with reference to FIGS. 14 to 18. The configuration of the nailing machine 1A of the present embodiment is different from the nailing machine 1 of the first embodiment in that the lighting unit 113 is further provided. The contents of the driving control process executed by the controller 18 of the nailing machine 1A are partially different from the contents of the driving control process in the first embodiment. In the following, the same configuration and processing as those in the first embodiment will be omitted or simplified in illustration and description, and mainly different configurations and processing will be described with reference to the drawings.

First, the lighting unit 113 will be described. As shown in FIG. 14, the nailing machine 1 </ b> A includes a lighting unit 113 provided at the front end of the main body housing 11. Although detailed illustration is omitted, the lighting unit 113 of this embodiment is a case made of a light emitting diode (LED) 114 (see FIG. 15) as a light source and a translucent material (transparent resin, glass, etc.) for housing the LED. Is mainly composed of The illumination unit 113 has a light irradiation direction set such that the light emitted from the LED 114 illuminates the area near the exit 123 (in other words, the area including the place where the nail 101 is driven).

As shown in FIG. 15, the LEDs 114 of the lighting unit 113 are electrically connected to the controller 18. Although the detailed description of the process is omitted, in the present embodiment, the controller 18 lights the LED 114 simultaneously with the start of the driving of the motor 2 in response to the input of the start instruction of the motor 2 and is used for the starting instruction of the motor 2 After the trigger switch 141 or the contact arm switch 131 is turned off, the LED 114 is turned off when a predetermined time elapses. The predetermined time until the LED 114 is turned off may be, for example, the same as the predetermined time until the drive stop of the motor 2 or may be longer than the predetermined time until the drive stop of the motor 2.

Hereinafter, the implantation control process in this embodiment will be described. In addition, since the operation itself of the driver drive mechanism 400 and the driver 3 by the drive of the motor 2 and the operation of the solenoid 715 is basically as described in the first embodiment, in the following, the controller 18 (specifically the CPU) The operation of will be mainly described.

As shown in FIG. 16, in the implantation control process of the present embodiment, the controller 18 stands by while both the trigger switch 141 and the contact arm switch 131 are in the off state as in the implantation control process of the first embodiment ( S101: NO, S102: NO). When the trigger switch 141 is turned on (S101: YES), the controller 18 stands by until the trigger switch 141 is turned off without starting the driving of the motor 2, unlike the first embodiment. (S102: NO). When the trigger switch 141 is turned off (S102: YES), that is, the controller 18 is turned off after the trigger switch 141 is turned on with the motor 2 not driven (use When the pull operation is released after the operator pulls the trigger 140), this is recognized as an input of the start instruction (drive start instruction) of the motor 2, and the process proceeds to the first control process described later (S300 and FIG. 17). On the other hand, when the trigger switch 141 is turned off and the contact arm switch 131 is turned on (S101: NO, S201: YES), the controller 18 shifts to a second control process described later (S400 and FIG. 18). .

Hereinafter, the first control process will be described. As shown in FIG. 17, when shifting to the first control processing, the controller 18 first starts driving the motor 2 in response to the input of the start instruction of the motor 2 (S301). As a result, the flywheel 4 is also rotationally driven to start storing rotational energy. Further, as described above, both the trigger switch 141 and the contact arm switch 131 are in the off state. The controller 18 determines whether a predetermined time has elapsed since the trigger switch 141 was turned off (S303). In addition, although the predetermined time used here is not specifically limited, In this embodiment, 5 seconds are employ | adopted like S33 of 1st Embodiment.

The controller 18 stands by while the predetermined time does not elapse and the contact arm switch 131 is not turned on (S303: NO, S304: NO). Driving of the motor 2 is continued also during this period. When the contact arm switch 131 remains off and the predetermined time has elapsed (S304: NO, S303: YES), the controller 18 stops the driving of the motor 2 (S310), and ends the first control process. The process returns to the drive control process (see FIG. 16).

If the contact arm switch 131 is turned on before the predetermined time passes, but the trigger switch 141 is off (S303: NO, S304: YES, S305: NO), the controller 18 passes the predetermined time. Continue monitoring until Driving of the motor 2 is continued also during this period. When the predetermined time has passed with the trigger switch 141 turned off (S305: NO, S303: YES), the controller 18 stops the driving of the motor 2 (S310), and ends the first control process. The processes of S303 to S305 and S310 described above are substantially the same as the processes of S33 to S35 and S37 of the first embodiment.

When the contact arm switch 131 is turned on and the trigger switch 141 is turned on before the predetermined time elapses (S303: NO, S304: YES, S305: YES), the start instruction of the driving operation is It means that it was input. As soon as the controller 18 determines that sufficient rotational energy is stored in the flywheel 4, the controller 18 stops energization of the motor 2 after sufficient rotational energy has been stored. The drive of the motor 2 is stopped (S306). Even if the driving of the motor 2 is stopped, the flywheel 4 and the rotor of the motor 2 continue to rotate by inertia. The controller 18 energizes and operates the solenoid 715 (S307) to cause the driver 3 to perform the driving operation. When the driver 3 reaches the driving position, a return mechanism (not shown) is activated to return the driver 3 to the initial position.

The drive stop of the motor 2 (S306) and the operation of the solenoid 715 (S307) may be performed at substantially the same timing, or the operation of the solenoid 715 may be performed with a slight delay. The controller 18 stops the current supply to the solenoid 715 when the predetermined time required for the driver 3 to reach the striking position has elapsed. Furthermore, the controller 18 resumes driving of the motor 2 (S308). During the time from the drive stop of the motor 2 (S306) to the drive resumption (S308) (hereinafter also referred to as rest time), for example, the solenoid 715 is operated, the driver 3 moves to the drive position and the nail 101 is driven. It may be set according to the time required to complete the The time required for the driver 3 to move to the driving position and complete the driving of the nail 101 is a very short time. In the present embodiment, as an example, the pause time is set to 30 milliseconds.

After restarting the driving of the motor 2 in S308, the controller 18 stands by until the trigger switch 141 is turned off (S309: NO). When the user cancels the pulling operation of the trigger 140 and the trigger switch 141 is turned off (S309: YES), the controller 18 returns to S303, and the predetermined time has elapsed since the trigger switch 141 is turned off. Determine if you If the user again issues an instruction to start the driving operation before the predetermined time has elapsed, the driving operation is performed by the driver 3 as described above (S303: NO, S304 to S308). After the trigger switch 141 is turned off, when a predetermined time elapses, the controller 18 stops the driving of the motor 2 (S303: YES, S310), and ends the first control process to execute the strike control process (FIG. 16). Return to

Hereinafter, the second control process will be described. As shown in FIG. 18, when shifting to the second control process, the controller 18 first starts driving the motor 2 in response to the input of the start instruction of the motor 2 (S401). While the trigger switch 141 is in the off state and the contact arm switch 131 is in the on state, the controller 18 stands by until any switch is switched (S402: NO, S403: NO). Since the contact arm switch 131 is already in the ON state, when the trigger switch 141 is in the ON state (S402: YES), it means that the start instruction of the driving operation is input. If the controller 18 determines that sufficient rotational energy is stored in the flywheel 4, the controller 18 stops driving of the motor 2 after sufficient rotational energy has been stored, otherwise (S404). The controller 18 energizes and operates the solenoid 715 (S405) to cause the driver 3 to perform the driving operation. After stopping the current supply to the solenoid 715, the controller 18 resumes driving of the motor 2 (S406). The processes of S404 to S406 are the same as the processes of S306 to S308 of the first control process. That is, in any of the first and second control processes, the nail 3 is driven into the workpiece by the driver 3 within the idle time of the motor 2 when the start instruction of the driving operation is input.

After restarting the driving of the motor 2 in S406, the controller 18 stands by until the contact arm switch 131 is turned off (S407: NO). When the pressing operation of the contact arm 13 is temporarily released by the user and the contact arm switch 131 is turned off (S407: YES), the controller 18 passes a predetermined time after the contact arm switch 131 is turned off. It is judged whether or not it has been done (S408). Even when the contact arm switch 131 is turned off with the trigger switch 141 turned off after the start of driving of the motor 2 (S402: NO, S403: YES), the controller 18 shifts to the processing of S408. The controller 18 stands by while the predetermined time has not passed and the contact arm switch 131 is not turned on again (S408: NO, S409: NO).

If the contact arm switch 131 is turned on again before the predetermined time elapses (S408: NO, S409: YES), the controller 18 returns to the determination of whether the trigger switch 141 is turned on (S408: NO). S402). When the trigger switch 141 is turned on, the controller 18 recognizes that the start instruction of the implanting operation is input again, and the driver 3 performs the implanting operation as described above (S402: YES, S404 to S406). ). After the contact arm switch 131 is turned off, when a predetermined time elapses, the controller 18 stops driving the motor 2 (S407: YES, S408: YES, S410), and the second control process ends and the driving is performed. Return to control processing (see FIG. 16).

As described above, in the first control processing in the present embodiment as well as the first control processing in the first embodiment, the user causes the driving of the motor 2 to be started by the start instruction operation of the motor 2 in advance. Thus, sufficient rotational energy can be stored in the flywheel 4 until the start instruction operation of the driving operation is completed. Therefore, the nailing machine 1A can immediately start the driving operation of the driver 3 after the start instruction operation of the driving operation is completed.

In the first embodiment, the drive of the motor 2 is started only by turning on the trigger switch 141 when the motor 2 is not driven. In the second embodiment, the motor 2 is started. The driving of the motor 2 is started only when the trigger switch 141 is once turned on and then turned off when not driving. In other words, in the first embodiment, only the pull operation of the trigger 140 by the user is the start instruction operation of the motor 2, while in the present embodiment, the pull operation of the trigger 140 by the user and the release thereof are the motor 2. It is assumed that the start instruction operation of. In any of the embodiments, the driving operation by the driver 3 is performed on condition that the contact arm switch 131 and the trigger switch 141 are sequentially turned on after the driving of the motor 2 is started. That is, unless the pressing operation of the contact arm 13 by the user and the pulling operation of the trigger 140 are performed in this order as the start instruction operation of the driving operation, the driving operation by the driver 3 is not performed.

On the other hand, if both the pressing operation of the contact arm 13 and the pulling operation of the trigger 140 are performed, a driving machine that performs a driving operation is known regardless of the order. Therefore, for example, when the user does not recognize the operation order of the contact arm 13 and the trigger 140 required in the nailing machine 1 of the first embodiment, the motor 2 is operated only according to the pulling operation of the trigger 140. When driving is started, there is no possibility that the user misunderstands that the pressing operation can be started by pressing the contact arm 13 against the workpiece while pulling the trigger 140. In such a case, the user may be confused by the fact that the pressing operation is not performed even if the contact arm 13 is pressed against the workpiece. On the other hand, in the present embodiment, the driving of the motor 2 is not started unless the user cancels the pull operation of the trigger 140 once. Therefore, according to the nailing machine 1A of the present embodiment, the user needs to pull the trigger 140 after pressing the contact arm 13 against the workpiece at the time of pressing the contact arm 13 against the workpiece And can be easily understood. Thus, the nailing machine 1A can exhibit excellent operability.

Further, in the present embodiment, in any of the first control processing and the second control processing, the start instruction operation of the driving operation is performed, and after the contact arm switch 131 and the trigger switch 141 are sequentially turned on, the flywheel When sufficient rotational energy is stored in 4, the driving of the motor 2 is temporarily stopped, and the driving of the motor 2 is resumed after the elapse of a predetermined pause time. Then, the driving operation by the driver 3 is performed within the idle time of the motor 2. As a result, particularly when the driver 3 strikes the nail 101 and strikes into the workpiece 100 during the driving operation by the driver 3, the rotational speed of the motor 2 is rapidly reduced and thus the motor 2 is loaded. Can be suppressed to protect the motor 2. In addition, since the flywheel 4 continues rotation by inertia even if the drive of the motor 2 is stopped, the driver 3 drives the nail 101 by the rotational energy of the flywheel 4 transmitted through the ring member 5 Can.

In addition, even if the trigger switch 141 or the contact arm switch 131 triggered to start the drive of the motor 2 is turned off after the drive of the motor 2 is restarted, the drive of the motor 2 is performed until a predetermined time elapses. Will be continued. Therefore, as in the first embodiment, since the state of storing rotational energy in the flywheel 4 is maintained during this time, the user can immediately instruct the start operation of the starting operation for the second time. The subsequent implantation operation can be started. It goes without saying that the same effects as those of the first embodiment can be obtained by the same configuration and processing as the first embodiment.

The above embodiment is merely an example, and the driving tool according to the present invention is not limited to the configuration of the illustrated

nailing machine

1, 1A. For example, the changes exemplified below can be made. In addition, any one or a plurality of these modifications may be adopted in combination with the nailing

machine

1 or 1A shown in the embodiment or the invention described in each claim.

The driving tool may be a tool for driving a driving material other than the nail 101. For example, it may be embodied as a tacker that ejects scissors, pins, staples, etc., a staple gun. The drive source of the flywheel 4 is not particularly limited to the motor 2. For example, an AC motor may be employed instead of the DC motor.

In the above embodiment, the trigger switch 141 and the contact arm switch 131 are both configured to function as a start switch of the motor 2, and when either one is turned on, the motor 2 is driven. However, for example, only the trigger switch 141 may be configured as the start switch of the motor 2. In this case, S2, S201 and S4, S400 (second control processing) are omitted in the implantation control processing (see FIGS. 8 and 16). The controller 18 may stand by until the trigger switch 141 is turned on, and may execute only the first control process (see FIGS. 9 and 17).

The start switch of the motor 2 may be configured as an individual switch instead of the trigger 140. In this case, it is preferable that the start switch is a switch other than the contact arm switch 131 which is started by the contact arm 13 operated first among a series of start instruction operations of the placement operation. For example, the activation switch may be provided on the main body housing 11 or the handle 14 so as to allow external operation by the user.

The timing at which the drive of the motor 2 is stopped is not limited to the timing exemplified in the above embodiment. For example, in the first control process (see FIGS. 9 and 17) and the second control process (see FIGS. 10 and 18), the trigger switch 141 and the contact arm switch 131 (that is, the trigger for starting the driving of the motor 2). The driving of the motor 2 is stopped when a predetermined time elapses from the time when the switch or the switch to which the instruction to start the driving of the motor 2 is input is turned off. However, in any case, the drive of the motor 2 may be stopped when a predetermined time has elapsed since the solenoid 715 was actuated, or when the predetermined time has elapsed since the start of the drive of the motor 2, the motor 2 Drive may be stopped. In these cases, the controller 18 operates the solenoid 715 at S33 of FIG. 9, S303 of FIG. 17, S46 of FIG. 10, S408 of FIG. 18 (S36, S307, S44, S405) or of the motor 2. It may be determined whether the elapsed time measured from the time of starting the driving (S31, S301, S41, S401) exceeds a predetermined time. In addition, the predetermined time in this case may be appropriately set to a time different from 5 seconds exemplified in the above embodiment. Also, in order to ensure time for which the drive of the motor 2 is continued after the trigger switch 141 or the contact arm switch 131 is turned off, the controller 18 sets the trigger switch 141 or the contact arm switch 131 to the off state. It is preferable to determine whether or not a first predetermined time has elapsed since the start and that a second predetermined time has elapsed since the actuation of the solenoid 715 or the start of driving of the motor 2.

In the above embodiment, the controller 18 is exemplified by a microcomputer including a CPU, a ROM, a RAM, etc. However, the controller (control circuit) may be, for example, an application specific integrated circuit (ASIC) or an FPGA. A programmable logic device such as a field programmable gate array (field programmable gate array) may be used. Further, the implantation control process of the above embodiment may be realized by the CPU executing a program stored in the ROM. In this case, the program may be stored in advance in the ROM of the controller 18, or may be stored in the non-volatile memory if the controller 18 includes the non-volatile memory. Alternatively, the program may be recorded on an external storage medium (eg, USB memory) from which data can be read. The implantation control processing of the above-described embodiment and modification may be distributed and processed by a plurality of control circuits.

The shape of the driver 3 and the configuration of the driver drive mechanism 400 for driving the driver 3 can be changed as appropriate. For example, in the roller contact portion 301 of the driver 3, the inclined portion 302 may be entirely formed in a straight line in a side view, or at least a part may be formed in a gentle arc shape. That is, the entire upper surface (the contact surface with the pressing roller 83) of the inclined portion 302 may be a flat surface, or the entire may be a curved surface, or a part is a flat surface and a part is a curved surface. It may be Further, the degree of inclination of the inclined portion 302 may be changed halfway. The inclined portion 302 may be provided longer. The roller contact portion 301 may include a plurality of inclined portions whose thickness gradually increases toward the rear. Further, instead of the driver drive mechanism 400, the driver 3 is frictionally engaged with the flywheel 4 so that rotational energy is directly transmitted from the flywheel 4 to the driver 3 without the ring member 5. A drive mechanism may be employed. The rotational energy of the flywheel 4 may be transmitted to the driver 3 via a transmission member (for example, an intermediate roller) other than the ring member 5.

The engagement aspect between the ring member 5 and the driver 3 and the flywheel 4 is not limited to the aspect exemplified in the above embodiment. For example, the number of ring members 5 and the number of engagement grooves 308 of driver 3 corresponding to ring members 5 and engagement grooves 47 of flywheel 4 may be one or three or more. . Further, for example, the shapes, positions, numbers, engagement positions, and the like of the outer circumferential engagement portion 51 and the inner circumferential engagement portion 53, and the corresponding engagement grooves 308 and engagement grooves 47 can be changed as appropriate. The configurations of the ring urging portion 60 and the stopper 66 of the holding mechanism 6 can be changed as appropriate.

The operating mechanism 7 only needs to be configured to shift the driver 3 from the initial state disposed at the initial position to a state capable of transmitting the rotational energy of the flywheel 4, and the configuration may be appropriately changed. It is possible. For example, the operating mechanism 7 does not push the driver 3 forward to the transmission position, but biases the driver 3 disposed at the initial position toward the flywheel 4 so that the flywheel 4 and the driver 3 May be frictionally engaged directly or indirectly (for example, via the ring member 5).

The correspondence of each component of the said embodiment and each component of this invention is shown below. Each of the

nailing machines

1 and 1A is an example of the "driving tool" of the present invention. The nail 101 is an example of the “burring material” of the present invention. The injection port 123 is an example of the “injection port” in the present invention. The motor 2 is an example of the "motor" of the present invention. The flywheel 4 is an example of the "flywheel" of this invention. The driver 3 is an example of the “driver” in the present invention. The operating line L is an example of the "operating line" in the present invention. The operating mechanism 7 is an example of the "operating mechanism" in the present invention. The trigger switch 141 is an example of the "start switch" in the present invention. The contact arm 13 and the contact arm switch 131 are examples of the "contact arm" and the "contact arm switch" in the present invention, respectively. The trigger 140 and the trigger switch 141 are the "trigger" and the "trigger switch" in the present invention, respectively. An example of The controller 18 (CPU) is an example of the “controller” in the present invention.

Furthermore, in view of the present invention and the spirit of the above embodiment, the following configuration (aspect) is constructed. Any one or more of the following configurations may be adopted independently or in combination with the invention described in the nailing

machine

1 or 1A shown in the embodiments and the modifications thereof or each claim. .
[Aspect 1]
A driving tool configured to inject a driving material from an injection port and drive the driving material into a workpiece;
Motor,
A flywheel rotationally driven by the motor;
It is disposed to face the outer periphery of the flywheel, and is moved forward linearly from an initial position along an operation line extending in the front-rear direction of the driving tool by rotational energy transmitted from the flywheel. A driver configured to perform a driving operation for driving the driving material into the workpiece;
An operating mechanism configured to shift the driver from an initial state disposed at the initial position to a transmissible state capable of transmitting the rotational energy;
A contact arm disposed movably in the front-rear direction in the vicinity of the injection port and configured to move rearward in response to pressing by the user on the workpiece;
A contact arm switch configured to be turned on in response to backward movement of the contact arm;
A trigger configured to allow pulling operation by the user;
A trigger switch configured to be turned on in response to the pull operation of the trigger;
A controller configured to control the operation of the motor and the actuation mechanism;
The controller starts driving the motor when the contact arm switch is turned on, and then operates the operating mechanism on condition that the trigger switch is turned on. Configured to cause a driver to perform the driving operation;
The driving tool, wherein the controller is further configured to continue driving of the motor for at least a predetermined period even when the contact arm switch is turned off.
[Aspect 2]
The trigger switch is always arranged at the initial position and maintained in the off state, and configured to be in the on state while arranged at the predetermined on position in response to the pull operation of the trigger. ,
The controller may continue driving of the motor for a predetermined period after the trigger switch is switched from the on state to the off state.
[Aspect 3]
The contact arm switch is normally disposed at the initial position and maintained in the off state, and is in the on state while disposed in the predetermined on position in response to the backward movement of the contact arm. Configured as
The controller may continue driving of the motor for a predetermined period after the contact arm switch is switched from the on state to the off state.
[Aspect 4]
The driving tool further includes a ring member configured to be capable of transmitting the rotational energy of the flywheel to the driver,
The operating mechanism is configured to shift the driver from the initial state to the transmittable state by moving the driver from the initial position to a transmission position forward of the initial position.
The ring member is disposed loosely with respect to the outer periphery when the driver is disposed at the initial position,
The ring member frictionally engages with the driver and the flywheel when the driver is moved to the transmission position by the actuating mechanism, and the flywheel has a rotation axis different from the rotation axis of the flywheel. It may be configured to push the driver forward from the transmission position by being rotated around and transmitting the rotational energy to the driver.
The ring member 5 is an example of the "ring member" in this aspect.
[Aspect 5]
The driving tool further includes a holding mechanism that holds the ring member movably between a separated position separated from the outer periphery of the flywheel and a contact position partially in contact with the outer periphery.
The holding mechanism is
When the driver is disposed at the initial position, the ring member is held at the spaced position, and
When the driver is moved to the transmission position by the driver moving mechanism, the ring member moved according to the movement of the driver may be held at the contact position.
The holding mechanism 6 is a configuration example corresponding to the "holding mechanism" in this aspect.
[Aspect 6]
The driving tool is disposed to face the driver on the side opposite to the flywheel in the opposing direction of the flywheel and the driver, and approaches the flywheel in the process of the driver moving forward. It may further comprise a pressure roller configured to enable transmission of the rotational energy to the driver by pressing the driver in a direction.
The pressure roller 83 is an example of the “pressure roller” in this aspect.
[Aspect 7]
The driver has an abutting surface that abuts against the pressing roller when the driver moves from the transmission position to a driving position where the driving material is driven into the workpiece.
At least a part of the region of the driver corresponding to the contact surface in the front-rear direction may be formed such that the thickness in the opposite direction gradually increases toward the rear.
In addition, the upper surface of the roller contact part 301 is a structural example corresponding to the "contact surface" in this aspect.

1, 1A: nailing machine, 10: tool body, 11: body housing, 113: lighting unit, 114: LED, 117: front stopper portion, 118: rear stopper portion, 12: nose portion, 123: injection port, 13 A: contact arm, 131: contact arm switch, 132: front end, 14: handle, 140: trigger, 141: trigger switch, 15: battery mounting portion, 17: magazine, 18: controller, 180: substrate, 19: battery, 2: Motor, 21: Pulley, 25: Belt, 201: Three-phase inverter, 203: Hall sensor, 3: Driver, 30: Body part, 301: Roller contact part, 302: Inclined part, 305: Lever contact 306 : Ring engaging part, 307: Inclined part, 308: Engaging groove, 31: Impact part, 310: Front end, 32: Rear end, 35: A Part, 400: driver drive mechanism, 4: flywheel, 41: pulley, 45: outer periphery, 47: engagement groove, 5: ring member, 51: outer periphery engagement portion, 53: inner periphery engagement portion, 6: 6: Holding mechanism, 60: ring urging portion, 66: stopper, 7: operating mechanism, 711: push lever, 713: tension coil spring, 715: solenoid, 8: pressing mechanism, 81: roller support member, 811: spring holding portion, 813: spring receiving portion, 815: roller supporting portion, 83: pressing roller, 84: roller shaft, 85: holder, 851: receiving portion, 852: receiving space, 853: spring receiving portion, 854: stopper portion, 87: elasticity Member, 9: contact arm cover, 100: workpiece, 101: nail, A1: rotation axis, A2: rotation axis, L: operation line

Claims

A driving tool configured to inject a driving material from an injection port and drive the driving material into a workpiece;
Motor,
A flywheel rotationally driven by the motor;
It is disposed to face the outer periphery of the flywheel, and is moved forward linearly from an initial position along an operation line extending in the front-rear direction of the driving tool by rotational energy transmitted from the flywheel. A driver configured to perform a driving operation for driving the driving material into the workpiece;
An operating mechanism configured to shift the driver from an initial state disposed at the initial position to a transmissible state capable of transmitting the rotational energy;
A start switch of the motor;
A contact arm disposed movably in the front-rear direction in the vicinity of the injection port and configured to move rearward in response to pressing by the user on the workpiece;
A contact arm switch configured to be turned on in response to backward movement of the contact arm;
A trigger configured to allow pulling operation by the user;
A trigger switch configured to be turned on in response to the pull operation of the trigger;
A controller configured to control the operation of the motor and the actuation mechanism;
The controller
The motor is configured to start driving when the start switch is turned on, and
The driver is configured to cause the driver to perform the driving operation by operating the operating mechanism on condition that the trigger switch is turned on after the contact arm switch is turned on. A driving tool characterized by
A driving tool according to claim 1, wherein
A driving tool characterized in that the trigger switch is also used as the start switch of the motor.
A driving tool according to claim 2, wherein
The controller
When the trigger switch is turned on while the motor is not driven, it is determined that the start switch is turned on to start driving of the motor, and
When the trigger switch is turned on after the motor is driven and the contact arm switch is turned on, the actuating mechanism is configured to be operated. Features a driving tool.
The driving tool according to any one of claims 1 to 3, wherein
The driving tool, wherein the controller is configured to continue driving of the motor for at least a predetermined period even when the start switch is turned off.
A driving tool configured to inject a driving material from an injection port and drive the driving material into a workpiece;
Motor,
A flywheel rotationally driven by the motor;
It is disposed to face the outer periphery of the flywheel, and is moved forward linearly from an initial position along an operation line extending in the front-rear direction of the driving tool by rotational energy transmitted from the flywheel. A driver configured to perform a driving operation for driving the driving material into the workpiece;
An operating mechanism configured to shift the driver from an initial state disposed at the initial position to a transmissible state capable of transmitting the rotational energy;
A contact arm disposed movably in the front-rear direction in the vicinity of the injection port and configured to move rearward in response to pressing by the user on the workpiece;
A contact arm switch configured to be turned on in response to backward movement of the contact arm;
A trigger configured to allow pulling operation by the user;
A trigger switch configured to be turned on in response to the pull operation of the trigger;
A controller configured to control the operation of the motor and the actuation mechanism;
The controller
The motor is configured to start driving when the trigger switch is turned on and then turned off, and
The driver is configured to cause the driver to perform the driving operation by operating the operating mechanism on condition that the trigger switch is turned on after the contact arm switch is turned on. A driving tool characterized by
The driving tool according to claim 5, wherein
The driving tool is characterized in that the controller is configured to continue driving the motor for at least a predetermined period even when the trigger switch is turned off during driving of the motor.
A driving tool according to any one of claims 1 to 6, wherein
The controller
The motor is configured to start driving also when the trigger switch is in the off state and the contact arm switch is turned on while the motor is not being driven, and
The driver is configured to cause the driver to perform the driving operation by operating the operating mechanism on condition that the trigger switch is turned on after the contact arm switch is turned on. A driving tool characterized by
The driving tool according to claim 7, wherein
The controller is characterized in that driving of the motor is continued for at least a predetermined period even when the contact arm switch triggered to start driving of the motor is turned off. Tool to drive.
A driving tool according to any one of claims 4, 6, 8.
The driving tool, wherein the controller is configured to continue driving of the motor for a predetermined period after the start of driving of the motor.
A driving tool according to any one of claims 4, 6, 8.
A driving tool characterized in that the controller is configured to continue driving of the motor for a predetermined period after completion of the driving operation.
A driving tool according to any one of claims 1 to 8, wherein
When the trigger switch is turned on after the contact arm switch is turned on, the controller temporarily stops the driving of the motor and resumes the driving of the motor after the completion of the driving operation. A driving tool characterized in that it is configured to