WO2017069266A1

WO2017069266A1 - Knock-in tool

Info

Publication number: WO2017069266A1
Application number: PCT/JP2016/081342
Authority: WO
Inventors: 秋葉　美隆
Original assignee: 株式会社マキタ
Priority date: 2015-10-21
Filing date: 2016-10-21
Publication date: 2017-04-27
Also published as: JP2017077613A

Abstract

Provided is a knock-in tool having a mechanism for driving a screwdriver in which it is possible to reduce wear. A knock-in tool 100 has: a rotating member 115 driven in a rotating manner by an electric motor 111; a screwdriver 130 for performing a knock-out operation on a knock-in member 161; a drive roller 120 for transmitting the rotation action of the rotating member 115 to the screwdriver 130; a support roller 123 that, together the drive roller 120, sandwiches the screwdriver 130; an urging member 151b for urging the support roller 123 toward the screwdriver 130 once the drive roller 120 and the support roller 123 have sandwiched the screwdriver 130, and a drive roller movement mechanism. The drive roller movement mechanism is configured so as to be capable of switching the drive roller 120 between a separated position in which the drive roller 120 is separated from the rotating member 115 and a knock-out position in which the the drive roller 120 is brought into contact with the rotating member 115 and drives rotation.

Description

Driving tool

The present invention relates to a driving tool for driving a driving material.

Japanese Patent Laid-Open No. 2008-073805 discloses a drive gear driven by an electric motor, a driven gear that meshes with the drive gear, a tilting plate that keeps the drive gear and the driven gear meshed at all times, and a straight line by the driven gear. A driving tool having a driver driven in a shape is disclosed.

The driving tool according to the above-described configuration can cause the driver to drive the nail by rotating the driving gear and the driven gear as the electric motor is driven.
On the other hand, since the drive gear and the driven gear always mesh with each other, the drive gear and the driven gear are rotated and worn even when the nail is not driven out, so the wear of the drive gear and the driven gear is reduced. There is a need for a driving tool having a possible mechanism.
The present invention has been made in view of the above problems, and an object thereof is to provide a driving tool having a driver drive mechanism capable of reducing wear.

According to a preferred embodiment of the driving tool according to the present invention, the driving tool is a driving tool for driving a driving material, and is moved linearly along a predetermined long axis along with a motor, a rotating member that is rotationally driven by the motor. A driver that performs the driving operation of the driving material, a driving roller that is in contact with the rotating member, transmits the rotational driving of the rotating member to the driver, and causes the driver to perform the driving operation, and can hold the driver together with the driving roller A biasing member that biases the support roller toward the driver in a state where the driver is sandwiched between the configured support roller and the drive roller and the support roller.
The drive roller is movable between a separation position separated from the rotation member and a launch position that is in contact with the rotation member and rotationally driven. When the driving roller is in the separated position, the driving operation of the driver is restricted. When the drive roller is in the launch position, the driver is sandwiched between the support roller to which a predetermined urging force is applied by the urging member and the drive roller, and performs a drive operation by rotational driving of the drive roller. In order to move the drive roller between the separation position and the launch position, it is preferable to provide a drive roller moving mechanism.

The driving tool can be configured to rotate the rotating member in advance before the driver performs the driving operation in order to quickly perform the driving work of the driving material. According to the present invention, when the driving tool does not perform the driving work of the driving material, the driving roller and the rotating member can be separated by placing the driving roller at the separation position. That is, when the driving roller is in the separated position, the rotating member in the rotating state and the driving roller are not in contact with each other, so that wear of the driving roller can be reduced.
In addition, when the driver performs the driving operation, the driver can be stably moved because the driver is sandwiched between the support roller biased by the biasing member and the driving roller.

A typical configuration of the driving tool according to the present invention includes a nail driving machine for driving nails, a staple gun for driving staples, and a tucker.
In addition, when the motor is driven by a battery, the driving tool can be provided with a battery mounting portion. On the other hand, a power supply cable for supplying power can be provided in the driving tool.
In addition, the rotation member can be appropriately selected to be driven by a motor. For example, the rotating member can be constituted by a roller-like member directly attached to the motor rotating shaft portion, or a roller-like member attached via the motor rotating shaft portion and a belt or a gear mechanism. Furthermore, it is also possible to constitute a rotating member by the motor rotating shaft portion.
Further, the moving direction of the driver can define the major axis direction of the driving tool. The driver extends in the long axis direction and is configured in a long shape, and is reciprocated linearly between the driver initial position and the launch completion position where the launch operation has been completed. It is possible to provide a driver return mechanism that moves the driver that has been moved to the launch completion position to the driver initial position.
Moreover, the controller which controls operation | movement of the electric component which comprises a driving tool can be provided.

According to the further form of the driving tool of the present invention, the driver can have a driving roller facing portion facing the driving roller. The drive roller moving mechanism can further move the drive roller between the separation position and the contact start position where contact with the rotating member starts, and the drive roller moves from the contact start position to the outer periphery of the rotary member. It can be set as the structure which is moved along and placed in the launch position. The drive roller can be configured to contact the drive roller facing portion at the launch position.
According to the driving tool according to the present embodiment, the rotating member can also be used as a moving member when the driving roller is moved from the contact start position to the launch position, so that the driving roller moving mechanism can be configured simply.

The drive roller moving mechanism is configured such that when the drive roller is in the launch position, the power of the drive roller can be transmitted to the driver more efficiently than when the drive roller is in the contact start position. The The driving tool according to the present embodiment is configured such that the driving roller facing portion and the driving roller come into contact with each other while the driving roller reaches the driving position from the contact start position. Therefore, in a state where the driving roller is moved to the launch position, the driving roller transmits power to the moving driver, so that the power of the driving roller is transmitted to the driver more smoothly. .
The driving roller facing portion only needs to contact the driving roller in the process in which the driving roller is switched from the contact start position to the launch position. For example, the driving roller facing portion can be in contact with the driving roller placed at the contact start position, or can be in contact with the drive roller that is moving from the contact start position to the launch position. it can.

The moving member when the drive roller is switched from the contact start position to the launch position is constituted by a rotating member. In the process in which the drive roller is switched from the contact start position to the launch position, the locus of movement of the point on the outer periphery of the drive roller that is located farthest from the rotation axis of the rotation member moves to the radius of the rotation roller. It is the same as the circular arc of the circle having the radius of the length plus the diameter. As a typical configuration of the driving tool according to the present embodiment, an arc-shaped region having the same shape as the arc can be formed in the driving roller facing portion. In other words, the drive roller facing portion includes a drive roller avoidance region that avoids contact with the drive roller when the drive roller is between the separation position and the contact start position, and the drive roller between the contact start position and the launch position. In this case, it is possible to have an arcuate region that comes into contact with the drive roller when the drive roller is in the position and a launch region that comes into contact with the drive roller when the drive roller is in the launch position. According to the launch tool according to this aspect, the drive roller transmits power to the driver while contacting the arcuate region of the drive roller facing portion when the drive roller is switched from the contact start position to the launch position. Can be smoothly transmitted to the driver.

The drive roller facing portion includes a tip portion that collides with the driving material, and is configured on the opposite side of the tip region to avoid contact with the drive roller when the drive roller is placed at a separated position. And a rear end region that comes into contact with the drive roller when the drive roller is placed at the launch position, and an arc-shaped drive roller facing portion intermediate region provided between the front end region and the rear end region. Can be defined. In this case, the arc in the intermediate region of the drive roller facing portion has the same shape as the arc in a circle having a radius of the length of the rotation member plus the diameter of the drive roller.

According to the further form of the driving tool of this invention, a driver can have a support roller opposing part which faces a support roller. In this configuration, the support roller facing portion is configured to be separated from the support roller in a state where the drive roller moving mechanism places the drive roller in the separated position. The support roller facing portion is configured to be in contact with the support roller in a state where the drive roller moving mechanism places the drive roller in the launch position.
According to the driving tool according to the present embodiment, when the driving roller is at the driving position, the driver is sandwiched between the driving roller and the supporting roller, so that the driving operation of the driver can be stably performed.

As a typical driver configuration according to the present embodiment, a support roller avoiding region for avoiding contact with the support roller when the drive roller is in the separated position, and a drive roller in the launch position at the support roller facing portion And a biased region that receives a predetermined biasing force from the support roller. This configuration can be formed by providing the support roller avoidance region at a position away from the support roller and the biased region at a position close to the support roller in a direction intersecting the driver major axis direction.
Further, in the support roller facing portion, a support roller facing portion intermediate region can be provided between the support roller avoiding region and the biased region. Since the support roller facing portion intermediate region is a region disposed between the support roller avoidance region and the biased region, the support roller facing portion intermediate region has a shape inclined with respect to the driver major axis direction. The said inclined shape is comprised so that the height to a support roller direction may increase for a while as it goes to a to-be-biased area | region from a support roller avoidance area | region.
In the configuration having the support roller facing portion intermediate region, the support roller facing portion intermediate region can be brought into contact with the support roller in a state in which the drive roller is switched from the separation position to the launch position. Thus, the driver can move stably while being supported by the support roller while the drive roller moves from the contact start position to the launch position.

According to the further form of the driving tool of the present invention, the rotating shaft of the rotating member, the rotating shaft of the support roller, and the rotating shaft of the driving roller placed at the launch position can be arranged on a straight line.
According to the driving tool according to the present embodiment, the driving force of the rotating member can be efficiently transmitted to the driver.

As a typical configuration of the driving tool according to the present embodiment, a straight line connecting the rotating shaft of the rotating member, the rotating shaft of the support roller, and the rotating shaft of the driving roller placed at the launch position is a driver moving shaft. Can be orthogonal. In this configuration, the tangent line on the outer periphery of the support roller at the contact point between the support roller and the driver, the tangent line on the outer periphery of the drive roller at the contact point between the drive roller and the driver, and the contact point between the outer periphery of the drive roller and the outer periphery of the rotating member. Each of the tangent lines at is parallel to the driver movement axis. Therefore, the power of the rotating member can be efficiently transmitted to the driver held between the support roller and the drive roller. Further, since the biasing force of the support roller is applied in the direction of the rotation axis of the drive roller, the driver is stably held between the support roller and the drive roller.

According to the further form of the driving tool of this invention, an urging | biasing member can be comprised by the several disc spring in series.
According to the driving tool according to the present embodiment, it is possible to apply a predetermined urging force to the support roller and to shorten the urging member in the urging direction.

According to the further form of the driving tool of the present invention, the driving roller moving mechanism holds the driving roller and is configured to be able to switch between the separation position, the contact start position, and the driving position. A holding unit moving mechanism that performs a predetermined operation to switch the driving roller holding unit from the separation position to the contact start position, and a connecting mechanism that connects the driving roller holding unit and the holding unit moving mechanism. it can. In this configuration, the coupling mechanism is configured to maintain the coupling between the driving roller holding unit and the holding unit moving mechanism when the driving roller holding unit is switched from the separation position to the contact start position. The operation of the moving mechanism is transmitted to the drive roller holding unit. Further, the connection mechanism releases the connection between the drive roller holding portion and the holding portion moving mechanism when the drive roller holding portion is switched from the contact start position to the launch position.

According to the driving tool according to the present embodiment, the driving roller can be moved together with the driving roller holding portion from the separated position to the contact start position by the holding portion moving mechanism. As described above, the driving roller is moved from the contact start position to the launch position by the rotating member. In this movement, since the connection mechanism releases the connection with the holding unit moving mechanism, the drive roller and the drive roller holding unit can smoothly move without being obstructed by the connection mechanism. In addition, when the driving roller is placed at the launch position, vibration is generated when the support roller and the driving roller in a state where a predetermined biasing force is applied by the biasing member sandwich the driver. On the other hand, when the drive roller is in the launch position, the connection mechanism releases the connection between the drive roller holding unit and the holding unit moving mechanism, so that the vibration is transmitted to the holding unit moving mechanism. Can be reduced.

As a typical example of the driving tool according to this aspect, the holding unit moving mechanism is configured by an electromagnetic solenoid, and the coupling mechanism is configured by an arm unit extending between the plunger of the electromagnetic solenoid and the driving roller holding unit. Can do. More specifically, the coupling mechanism includes a plunger engaging portion that engages with the plunger, a pin portion provided in the arm portion, and a long hole portion provided in the drive roller holding portion for inserting the pin portion. Can be configured. The long hole portion extends along the moving axis of the drive roller holding portion between the contact start position and the launch position. When the driving roller holding portion is in the separated position, the pin portion and the opening edge portion on the launch position side of the elongated hole portion are configured to contact each other.
In this configuration, the drive roller holder is moved from the separated position to the contact start position by the pin portion urging the drive roller holder as the plunger is driven. The drive roller holding portion moved to the contact start position is moved to the launch position as the drive roller is moved by the rotating member. In this case, since the pin portion is disposed in the elongated hole portion, the drive roller holding portion can move without being obstructed by the pin portion. In other words, while the drive roller holding portion moves from the contact start position to the launch position, the connection between the pin portion and the drive roller holding portion is released.

According to the further form of the driving tool of this invention, a connection mechanism can have an amplification mechanism which amplifies operation | movement of a holding | maintenance part moving mechanism.
The holding unit moving mechanism performs a predetermined operation to place the drive roller from the separated position to the contact start position. That is, the distance on which the operation of the holding unit moving mechanism acts is required over the distance between the separation position and the contact start position. According to the driving tool according to this aspect, the distance over which the operation of the holding unit moving mechanism acts can be made shorter than the distance between the separation position and the contact start position by the amplification mechanism. As a result, the holding unit moving mechanism can be made compact.

In the typical configuration of the driving tool according to this aspect, the holding unit moving mechanism is configured by an electromagnetic solenoid, and the coupling mechanism is configured by an arm unit extending between the plunger of the electromagnetic solenoid and the driving roller holding unit. In, a fulcrum part can be provided in an arm part. In this configuration, the plunger engaging portion of the arm portion is the force point, and the pin portion of the arm portion that is in contact with the drive roller holding portion is the action point. Although the fulcrum part is formed between the force point (plunger engaging part) and the action point (pin part), the distance from the fulcrum part to the force point in the extending direction of the arm part is the distance from the fulcrum part to the action point. It is configured to be shorter than the distance up to. With this configuration, the distance that the pin portion moves can be made longer than the distance that the plunger engaging portion moves. That is, since the distance between the plunger initial position and the protruding position can be made shorter than the distance between the separated position and the contact start position, the electromagnetic solenoid can be downsized.

According to the further form of the driving tool of the present invention, it is possible to have an urging force releasing mechanism that releases the urging force of the urging member in a state where the driving roller is placed at the driving position.
In the driving tool, it can be assumed that the driver is locked for some reason when the driving work is performed. According to the driving tool according to the present embodiment, even when the driver is locked, the driver can release the pinching of the driver by the driving roller and the supporting roller by manually operating the urging force releasing mechanism. . As a result, the user can perform repair work by releasing the locked state of the driver.

Note that, as a typical configuration of the biasing force release mechanism, the support roller holding portion that holds the support roller and the biasing member can be detached from the driving tool main body. More specifically, the urging force releasing mechanism can be configured such that the support roller holding portion can rotate with respect to the driving tool main body, or the support roller holding portion and the driving tool main body can be separated.

According to the present invention, it is possible to provide a driving tool having a driver drive mechanism capable of reducing wear.

It is sectional drawing which shows the whole structure of the nailing machine which concerns on this invention. It is sectional drawing which shows the structure of a drive mechanism. It is explanatory drawing which shows the structure of a drive roller holding | maintenance part. It is sectional drawing which shows the structure of a drive roller holding | maintenance part. It is sectional drawing which shows the structure of a drive roller moving mechanism. It is explanatory drawing which shows the structure of a support roller urging | biasing mechanism. It is explanatory drawing which shows a driver. It is explanatory drawing which shows the state in which the drive roller was put in the contact start position. It is explanatory drawing which shows the state in which the drive roller was put in the launch position. It is explanatory drawing which shows operation | movement of a drive roller holding | maintenance part. It is sectional drawing which shows operation | movement of a drive roller holding | maintenance part. It is explanatory drawing which shows the state in which the driver was put in the launch completion position. It is explanatory drawing which shows operation | movement of a support roller urging | biasing mechanism. It is explanatory drawing which shows the state by which the lever part was operated.

Embodiments of the driving tool according to the present invention will be described with reference to FIGS. In the embodiment, description will be made using a nail driver 100 that performs a driving operation of a nail 161 as an example of a driving tool. The nail 161 is an example of the “driving material” according to the present invention, and the nail driving machine 100 is an example of the “driving tool” according to the present invention.

The nail driving machine 100 drives the nail 161 by linearly moving the driver 130 from the driver initial position shown in FIG. 1 to the driving completion position shown in FIG. The moving axis of the driver 130 defines the major axis direction of the nailing machine 100. The direction intersecting with the major axis direction defines the intersecting direction. 1, 8, 9, 12, 13, and 14, the major axis direction extends in the left-right direction, and the intersecting direction extends in the up-down direction.
With respect to the long axis direction, the front end side of the driver guide 105 is defined as the front side of the nail driver 100, and the drive mechanism housing portion 103 side opposite to the front end side of the driver guide 105 is defined as the rear side of the nail driver 100. . Regarding the crossing direction, the front end side of the handle 107 is defined as the lower side of the nail driver 100, and the drive mechanism housing portion 103 side opposite to the front end side of the handle 107 is defined as the upper side of the nail driver 100.

(Outline of main unit)
As shown in FIG. 1, the nailing machine 100 is configured mainly with a main body 101 and a magazine 160. The main body unit 101 includes a drive mechanism housing unit 103, a driver guide 105, a handle 107, and a controller 108. The drive mechanism housing portion 103 is formed as a housing and houses the drive mechanism 110 for driving out the nail 161. The driver guide 105 is connected to the drive mechanism housing portion 103 so as to extend in the long axis direction on the tip side of the nailing machine 100. A driver passage 106 is formed in the driver guide 105 and communicates with the internal space of the drive mechanism housing portion 103. The driver passage 106 is opened at the tip side as an injection port 106a. The handle 107 constitutes a gripping part that is held by the user, and extends below the drive mechanism housing part 103. The handle 107 is provided with a trigger 107a operated by a user. Further, a battery 170 is detachably attached to the tip of the handle 107. The magazine 160 can accommodate a plurality of nails 161 and is detachable from the driver guide 105. The nails 161 accommodated in the magazine 160 are supplied to the driver passage 106 one by one and are driven out from the injection port 106 a by the driver 130. The driver 130 is an example of the “driver” according to the present invention. The controller 108 controls the drive mechanism 110 for driving the driver 130 based on the operation of the trigger 107a by the user.

(Overview of drive mechanism)
Next, the structure of the drive mechanism 110 is demonstrated based on FIG.1, FIG.2, FIG.8 and FIG. As will be described later, the drive roller 120 of the drive mechanism 110 is configured to be movable between a separation position shown in FIG. 1, a contact start position shown in FIG. 8, and a launch position shown in FIG. ing. FIG. 2 is a cross-sectional view taken along the line II of FIG. 9, showing the configuration of the drive mechanism.
As shown in FIG. 2, the drive mechanism 110 is mainly composed of an electric motor 111, an intermediate roller 115, a drive roller 120, a driver 130, and a support roller 123. The electric motor 111 is an example of the “motor” according to the present invention, the intermediate roller 115 is an example of the “rotating member” according to the present invention, and the driving roller 120 is an example of the “driving roller” according to the present invention. The support roller 123 is an example of the “support roller” according to the present invention.

As shown in FIG. 2, a pulley 112 is connected to the rotating shaft portion of the electric motor 111. An intermediate roller 115 is disposed on the front side of the pulley 112. The intermediate roller rotating shaft portion 115a of the intermediate roller 115 is attached to the drive mechanism housing portion 103 via a bearing. The pulley 112 and the intermediate roller 115 are connected by a drive belt 113. Therefore, the rotation of the electric motor 111 is transmitted to the intermediate roller 115 via the pulley 112.
Various configurations can be selected to transmit the rotational drive of the electric motor 111 to the intermediate roller 115. For example, a pinion gear can be provided on the rotating shaft of the electric motor 111 and a gear tooth that engages with the pinion gear can be provided on the outer peripheral portion of the intermediate roller 115.

2, the drive roller 120 is a member that transmits the rotation of the intermediate roller 115 to the driver 130 and moves the driver 130 in the long axis direction, and is disposed between the intermediate roller 115 and the driver 130. As shown in FIG. 1, the driving roller 120 is held by the driving roller holding unit 140, and the driving roller 120 and the driving roller holding unit 140 are separated from each other (see FIG. 1), contact start position (see FIG. 8) or It is configured to be switchable between launch positions (see FIG. 9). This driving roller holding part 140 is an example of the “driving roller holding part” according to the present invention.

As shown in FIG. 2, the drive roller rotating shaft portion 120 a is disposed in the drive mechanism housing portion 103. As shown in FIG. 2, the driving roller 120 includes an engaging convex portion 120 c that engages with the engaging groove portion 115 c of the intermediate roller 115 and an engaging convex portion of the driver 130 in a state where the driving roller 120 is placed at the launch position. It has the engaging groove part 120e engaged with the part 130b. When the drive roller 120 is engaged with the intermediate roller 115, the contact surface 120d of the engagement convex portion 120c and the contact surface 115d of the engagement groove portion 115c contact each other. When the driving roller 120 is engaged with the driver 130, the contact surface 120f of the engagement groove 120e and the contact surface 130c of the engagement convex portion 130b contact each other.

As shown in FIG. 1, a support roller 123 is provided above the drive roller 120 with the driver 130 interposed therebetween. The support roller 123 is urged toward the driver 130 by the support roller urging mechanism 150. As shown in FIG. 2, the support roller rotating shaft portion 123 a is disposed in the drive mechanism housing portion 103.

As shown in FIG. 1, the driver 130 is a member extending in the long axis direction, and the front end portion of the driver 130 constitutes a striking portion 130 a for striking the nail 161.
The driver 130 moves in the major axis direction between the driver initial position (see FIG. 1) and the launch completion position (FIG. 12) in the driver passage 106 formed in the driver guide 105. When the driver 130 moves from the driver initial position to the driving completion position, the nail 161 supplied from the magazine 160 to the driver passage 106 is hit by the hitting portion 130a of the driver 130 and driven from the injection port 106a.
Although not described for the sake of convenience, the nailing machine 100 has a driver return mechanism that returns the driver 130 placed at the launch completion position to the driver initial position, and the driver 130 moves forward beyond the driver initial position. A driver movement suppressing mechanism that suppresses

Further, a contact arm 105 a is provided at the front end of the driver guide 105. The contact arm 105a is normally urged forward, and is moved backward in contact with the workpiece. A contact arm switch (not shown) is connected to the contact arm 105a. When the contact arm 105a is located at the front position (see FIG. 1), the contact arm switch is off, and when the contact arm 105a is located at the rear position (see FIG. 8), the contact arm switch is on. State. When the contact arm switch is in the OFF state, the controller 108 controls the electric motor 111 not to be driven even when the trigger 107a is operated by the user.

(Drive roller moving mechanism)
The drive roller moving mechanism will be described with reference to FIGS. 1, 3 to 5, 8 and 9. FIG. As shown in FIG. 1, the drive roller moving mechanism includes a drive roller holding unit 140 that holds the drive roller 120 and an electromagnetic solenoid that moves the drive roller 120 from a separated position (see FIG. 1) to a contact start position (see FIG. 8). 121, an intermediate roller 115 that moves the drive roller 120 from the contact start position to the launch position (see FIG. 9), an arm portion 122 that connects the electromagnetic solenoid 121 and the drive roller holding portion 140, and a launch position (FIG. 9). The driving roller holding part 140 placed in the reference) is configured mainly with an urging member 143 for returning the driving roller holding part 140 to the separated position (see FIG. 1). The driving roller moving mechanism is an example of the “driving roller moving mechanism” according to the present invention, the electromagnetic solenoid 121 is an example of the “holding unit moving mechanism” according to the present invention, and the arm portion 122 is the “connection” according to the present invention. It is an example of “mechanism”.

As shown in FIG. 3, the drive roller holding part 140 has a drive roller holding part main body 141. The drive roller holding part main body 141 has a first long hole 141a through which the drive roller rotating shaft part 120a is inserted, and a second long hole 141b through which the action shaft part 122c of the arm part 122 is inserted. The first long hole 141a extends so that the crossing direction becomes the long axis, and the second long hole 141b extends so that the long axis direction becomes the long axis. In this case, the extending directions of the first long hole 141a and the second long hole 141b are orthogonal to each other. The extending direction of the second elongated hole 141b defines the moving axis of the drive roller holding unit 140.
As shown in FIG. 3, the drive roller holding part 140 is urged forward by an urging member 143 formed of a coil spring. The urging member 143 returns the driving roller holding portion 140 placed at the launch position (see FIG. 9) to the separated position (see FIG. 1). Therefore, the urging member 143 constitutes a return mechanism of the drive roller holding unit 140.

FIG. 4 is a cross-sectional view taken along the line II-II in FIG. 3, and shows the configuration of the drive roller holding unit 140. As shown in FIG. 4, a stopper portion 142 is provided outside the drive roller holding portion 140. The stopper portion 142 has an extending portion 142a extending in the major axis direction, and a wall portion 142b extending upward from the rear end of the extending portion 142a. The stopper part 142 is fixed to the drive mechanism housing part 103.

As shown in FIG. 1, an arm portion 122 is provided across the drive roller holding portion 140 and the electromagnetic solenoid 121. FIG. 5 is a cross-sectional view taken along the line III-III in FIG. 1 and shows the configuration of the drive roller moving mechanism. As shown in FIGS. 1 and 5, the arm portion 122 includes a plunger engagement portion 122 a that engages with the plunger 121 a of the electromagnetic solenoid 121, a fulcrum shaft portion 122 b that is attached to the drive mechanism housing portion 103, and a drive roller holding portion 140. And a working shaft portion 122c inserted into the second elongated hole 141b. As a result, the arm portion 122 can rotate around the fulcrum shaft portion 122b.
As shown in FIG. 1, when the driving roller holding portion 140 is in the separated position, the action shaft portion 122 c comes into contact with the opening edge portion on the rear side of the second long hole 141 b. In the extending direction of the arm part 122, the distance from the fulcrum shaft part 122b to the plunger engaging part 122a is configured to be shorter than the distance from the fulcrum shaft part 122b to the action shaft part 122c. With this configuration, it is possible to make the distance that the action shaft portion 122c moves longer than the distance that the plunger engaging portion 122a is moved by the operation of the plunger 121a. The configuration of the arm portion 122 having the plunger engaging portion 122a, the fulcrum shaft portion 122b, and the action shaft portion 122c is an example of the “amplifying mechanism” according to the present invention.

(Support roller urging mechanism)
The configuration of the support roller urging mechanism 150 will be described with reference to FIG. The support roller urging mechanism 150 includes an urging mechanism main body 151 that rotatably supports the support roller rotating shaft portion 123a, an urging mechanism main body holding portion 152 that holds the urging mechanism main body 151, and an urging mechanism. The biasing member 151b disposed between the main body 151 and the biasing mechanism main body holding part 152 and the lever part 153 are mainly configured. This urging member 151b is an example embodiment that corresponds to the “urging member” according to the present invention. The biasing member 151b is configured by arranging four disc springs in series. As a result, a predetermined urging force required for the urging member 151b can be obtained, and the urging member 151b can be shortened in the urging direction. It should be noted that the number of disc springs can be any number of two or more, and can be a single number. Further, the urging member 151b can be constituted by a single or a plurality of leaf springs. The urging member 151 b is disposed between the flange portion 151 a provided in the urging mechanism main body portion 151 and the top plate portion 152 b of the urging mechanism main body holding portion 152. The flange portion 151 a is disposed between the top plate portion 152 b and the flange portion 152 c of the urging mechanism main body holding portion 152. By the flange portion 151 a coming into contact with the flange portion 152 c of the urging mechanism main body holding portion 152, separation between the urging mechanism main body portion 151 and the urging mechanism main body holding portion 152 is prevented. That is, the urging mechanism main body 151 and the urging mechanism main body holding part 152 are provided with a detachment preventing mechanism.

As shown in FIGS. 1 and 6, the urging mechanism main body holding portion 152 is rotatably attached to the main body portion 101 via the rotation shaft portion 152a and extends in the direction opposite to the rotation shaft portion 152a. It has an existing portion 152d. The lever portion 153 is rotatably attached to the main body portion 101 via the rotation shaft portion 153a. The lever portion 153 extends in the long axis direction and is manually operated by the user, an attachment / detachment portion 153c that can be attached to and detached from the main body 101, and an engagement portion that can be engaged with the extension portion 152d. Part 153d.
As shown in FIG. 1, when the nailing machine 100 performs the driving operation of the nail 161, the lever portion 153 is rotated so that the attaching / detaching portion 153 c of the lever portion 153 comes into contact with the main body portion 101. As a result, the engaging portion 153d is engaged with the extending portion 152d, and the extending portion 152d is brought into contact with the main body portion 101, whereby the urging mechanism main body holding portion 152 is fixed to the main body portion 101.

(driver)
The configuration of the driver 130 will be described with reference to FIGS. 1 and 7. As shown in FIG. 1, the driver 130 has an upper portion 131 that faces the support roller 123 and a lower portion 132 that faces the driving roller 120. The upper portion 131 is an example of the “supporting roller facing portion” according to the present invention, and the lower portion 132 is an example of the “driving roller facing portion” according to the present invention.

As shown in FIG. 7, the upper portion 131 includes an upper tip region 131a that includes the striking portion 130a, an upper rear end region 131c that is located on the opposite side of the upper tip region 131a, an upper tip region 131a, and an upper rear end. And an upper intermediate region 131b positioned between the region 131c and the region 131c. The upper rear end region 131c is provided closer to the support roller 123 than the upper front end region 131a. Therefore, the upper middle region 131b is configured as an inclined surface that increases in height upward for a while from the upper middle region leading end 131b1 toward the upper middle region rear end 131b2.

As shown in FIG. 7, the lower portion 132 includes a first lower tip region 132a that is a region including the striking portion 130a, a second lower tip region 132b that is a region adjacent to the first lower tip region 132a, and a first lower tip region. It has a lower rear end region 132d located on the opposite side of 132a, and a lower intermediate region 132c located between the second lower front end region 132b and the lower rear end region 132d and configured in an arc shape. The engaging protrusion 130b is provided from the second lower tip region 132b to the lower rear end region 132d.
The lower rear end region 132d is provided farther from the driving roller 120 than the second lower front end region 132b. Therefore, the arc shape of the lower intermediate region 132c is configured to increase in height upward for a while from the lower intermediate region leading end portion 132c1 toward the lower intermediate region rear end portion 132c2.
Note that the arc shape of the lower intermediate region 132c has the same shape as an arc having a radius of a length obtained by adding the diameter of the driving roller 120 to the radius of the intermediate roller 115.

Note that, as shown in FIG. 7, the upper middle region tip 131b1 is located between the lower middle region tip 132c1 and the lower middle region rear end 132c2. Further, the rear end portion 131b2 of the upper middle region is located on the rear side of the rear end portion 132c2 of the lower middle region.

(Operation of nailing machine)
The operation of the nailing machine 100 will be described with reference to FIGS. 1 and 2 and FIGS. FIG. 1 shows a state in which the nailing machine 100 is not operating. In this state, the driving roller 120 is placed at a separated position that is separated from the intermediate roller 115. The separation position is set to an empty space in front of the drive mechanism housing portion 103. Thereby, the internal space of the main body 101 can be used effectively.

When the contact arm 105 a is pressed against the workpiece by the user and the contact arm switch is turned on, the controller 108 supplies current from the battery 170 to the electric motor 111, via the pulley 112 and the drive belt 113. The intermediate roller 115 is rotated clockwise. In this state, since the trigger 107a is not operated by the user, the electromagnetic solenoid 121 is not driven, and the driving roller 120 is kept in the separated position. This state is also referred to as an idling state or a preparation state.

FIG. 8 shows a state where the user has pulled the trigger 107a with respect to the nailing machine 100 in the idling state. Based on the pulling operation of the trigger 107 a, the controller 108 supplies a current from the battery 170 to the electromagnetic solenoid 121. As a result, the plunger 121a protrudes and moves forward in the plunger engaging portion 122a of the arm portion 122, whereby the arm portion 122 rotates around the fulcrum shaft portion 122b, and the action shaft portion 122c is moved backward. . By the rearward movement of the action shaft portion 122c, the rear edge portion of the second long hole 141b is pressed, and the driving roller holding portion 140 is moved rearward. As a result, the drive roller 120 and the drive roller holding part 140 are placed at the contact start position from the separated position.

It should be noted that the drive roller holding unit 140 can be moved from the separated position to the contact start position only by the electromagnetic solenoid 121. On the other hand, in the said structure, it is necessary to make the protrusion length of the plunger 121a the same as the length between the separation position and the contact start position. On the other hand, in this embodiment, since the arm part 122 constitutes an amplification mechanism, the protruding length of the plunger 121a can be set shorter than the length between the separation position and the contact start position. As a result, the electromagnetic solenoid 121 having a compact configuration can be used.

The engaging convex part 120c of the driving roller 120 placed at the contact start position engages with the engaging groove part 115c of the intermediate roller 115 (see FIG. 2). As a result, the drive roller 120 moves along the outer periphery of the intermediate roller 115 as the intermediate roller 115 rotates, and is placed at the launch position shown in FIG. In this case, with the movement of the intermediate roller 115, the drive roller holding portion main body 141 is moved rearward, and the urging member 143 is compressed.

10 and 11 show the state of the drive roller holding portion 140 when the drive roller 120 is placed at the launch position. 11 is a cross-sectional view taken along line IV-IV in FIG.
Since the drive roller 120 moves from the contact start position to the launch position along the outer periphery of the intermediate roller 115, the movement locus of the drive roller 120 becomes an arc shape. The driving roller 120 is movable in the vertical direction by the driving roller rotating shaft portion 120a being guided by the first long hole 141a. Further, the drive roller holding part 140 is configured to be movable in the moving axis direction of the drive roller holding part 140 by the second elongated hole 141b being guided by the action shaft part 122c. The moving axis of the driving roller holding part 140 is orthogonal to the vertical direction. For this reason, the arc-shaped movement when the driving roller 120 moves from the contact start position to the launch position is performed while being guided by the first elongated hole 141a and the second elongated hole 141b.

As shown in FIGS. 10 and 11, when the drive roller 120 is in the launch position, the drive roller rotating shaft 120a is brought into contact with the wall 142b of the stopper 142. Thereby, further rearward movement of the drive roller 120 is suppressed.

Further, the action shaft portion 122c of the arm portion 122 inserted through the second elongated hole 141b performs a guide function when the drive roller holding portion 140 moves from the contact start position to the launch position, but the drive roller holding portion It does not function as a moving member in 140 movement.
That is, while the drive roller 120 is moved from the contact start position to the launch position, it can be said that the arm part 122 releases the connection between the electromagnetic solenoid 121 and the drive roller holding part main body 141. Thereby, when the drive roller 120 moves to the launch position, it is possible to suppress the vibration generated by the drive roller 120 and the support roller 123 sandwiching the driver 130 from being transmitted to the electromagnetic solenoid 121.

As described above, the drive roller 120 is moved by the electromagnetic solenoid 121 from the separation position to the contact start position, and is moved by the intermediate roller 115 from the contact start position to the launch position. For this reason, a drive roller moving mechanism can be made into a compact structure.

2, 7, and 8, when the driving roller 120 is placed at the contact start position, the engaging protrusion at the engaging groove 120 e of the driving roller 120 and the lower intermediate region tip 132 c 1 of the driver 130. Part 130b engages. For this reason, the driver 130 is moved forward by the rotation of the driving roller 120 while the driving roller 120 moves from the contact start position to the launch position. In a state where the driving roller 120 is moved to the launch position, the engaging groove 120e of the driving roller 120 and the engaging convex portion 130b in the lower intermediate region rear end portion 132c2 of the driver 130 are engaged. At this time, the movement trajectory through which the outermost point farthest from the driving roller rotating shaft 120b passes on the outer periphery of the driving roller 120 is the same as the arc shape of the intermediate region 132, and therefore, from the contact start position on the driving roller 120. The movement to the launch position and the forward movement of the driver 130 are performed smoothly.

Further, the support roller 123 is brought into contact with the upper intermediate region 131b of the driver 130 by moving the driver 130 forward in the process in which the driving roller 120 reaches the launch position from the contact start position. Since the driver 130 is brought into contact with the support roller 123 until the driving roller 120 reaches the launch position, the driver 130 is stably moved forward.

As shown in FIG. 9, in a state where the driving roller 120 is placed at the launch position, the support roller 123 contacts the upper rear end region 131c of the driver 130, and the driving roller 120 contacts the lower rear end region 132d. Since the support roller 123 urges the driver 130 by the urging member 151 b, the driver 130 is stably held between the support roller 123 and the drive roller 120. Furthermore, as shown in FIG. 9, the continuous line 110a connecting the driving roller rotating shaft 120b, the support roller rotating shaft 123b, and the intermediate roller rotating shaft 115b at the launch position is configured to be orthogonal to the moving axis of the driver 130. Yes. As a result, the support roller 123 can apply an urging force to the drive roller rotating shaft 120b, so that the clamping state of the driver 130 between the support roller 123 and the drive roller 120 can be stabilized. Further, the tangent line of the outer periphery of the support roller 123 at the contact point between the support roller 123 and the driver 130, the tangent line of the outer periphery of the drive roller 120 at the contact point between the drive roller 120 and the driver 130, the outer periphery of the drive roller 120, and the intermediate roller Each of the tangents at the contact point with the outer periphery of 115 is parallel to the driver movement axis. Therefore, the power of the intermediate roller 115 can be efficiently transmitted to the driver 130 held between the support roller 123 and the drive roller 120. The drive roller rotation shaft 120b is an example of the “drive roller rotation shaft” according to the present invention, the support roller rotation shaft 123b is an example of the “support roller rotation shaft” according to the present invention, and the intermediate roller rotation shaft 115b. Is an example of the “rotating shaft of the rotating member” according to the present invention.

When the driving roller 120 is placed at the launch position, the driving roller 120 is firmly joined to the intermediate roller 115 and the driver 130 by the wedge action. As a result, as shown in FIG. 12, the driver 130 is moved forward with the rotation of the driving roller 120, and hits the nail 161 in the driver passage 106. As a result, the nail 161 is driven out from the injection port 106a and the nail driving work is performed. That is, the operation for the contact arm 105a shifts to a preparation state for driving out the nail 161, and the nail 161 is driven out by the subsequent operation of the trigger 107a. Thus, the nail driving operation is performed by operating the contact arm 105a and the trigger 107a in this order.

After the nail driving operation shown in FIG. 12 is completed, when the user moves the nail driver 100 away from the workpiece and releases the contact state between the contact arm 105a and the workpiece, the contact arm switch is turned off. As a result, the controller 108 stops the electric motor 111, so that the rotational drive of the intermediate roller 115 is stopped. As the rotation of the intermediate roller 115 stops, there is no power to move the driving roller 120 backward, so the driving roller holding portion 140 is urged by the urging member 143 and is moved from the launch position to the separated position via the contact start position. And moved. Further, when the user releases the operation of the trigger 107a, the electromagnetic solenoid 121 places the plunger 121a at the plunger initial position. The driver 130 is returned to the driver initial position by the driver return mechanism.

Next, based on FIG. 13 and FIG. 14, a description will be given of a return operation when the driver 130 finishes the moving operation from the driver initial position to the launch completion position. When a nail clogging or the like occurs while the driver 130 is performing the driving operation, a situation in which the movement of the driver 130 is stopped can be assumed. This state is referred to as a locked state of the driver 130. FIG. 13 is an explanatory diagram showing a locked state of the driver. As shown in FIG. 13, the driver 130 is sandwiched between the support roller 123 and the drive roller 120 while the support roller 123 is biased. This makes it difficult to manually move the driver 130. The controller 108 detects that the driver 130 has not been moved for a predetermined period and stops the operation of the electric motor 111.

When such a locked state of the driver 130 occurs, as shown in FIG. 14, the user manually operates the operation unit 153 b to rotate the lever unit 153. Thereby, the attaching / detaching portion 153c is separated from the main body portion 101, and the engaging state between the engaging portion 153d and the extending portion 152d is released. As a result, the urging mechanism main body holding portion 152 can be rotated with respect to the main body portion 101.
In this state, the holding state of the support roller 123 and the drive roller 120 with respect to the driver 130 is released. Therefore, since the driver 130 is unlocked, the user can perform repair work.
In addition, since the biasing mechanism main body holding portion 152 is rotated by the operation of the lever portion 153 and the support roller 123 and the driver 130 can be separated, the lever portion 153 attaches the biasing member 151b to the driver 130. It can be said that it is a member that releases the power. A mechanism constituted by the lever portion 153 and the biasing mechanism main body holding portion 152 is an example of the “biasing force releasing mechanism” according to the present invention.

The embodiment of the present invention is not limited to the configuration described above. For example, the nail driving operation is performed by operating the contact arm 105a and the trigger 107a in this order, but the present invention is not limited to this. For example, the nailing operation may be performed by operating the trigger 107a and the contact arm 105a in this order. In this case, the electric motor 111 is driven when the trigger 107a is operated, and the electromagnetic solenoid 121 is driven when the contact arm 105a is pressed against the workpiece. it can.
Further, the support roller urging mechanism 150 described above can be used for the nailing machine 100 having other configurations. For example, the support roller urging mechanism 150 can be used in the nail driver 100 having a mechanism for holding the driver 130 between the intermediate roller 115 and the support roller 123. In the nailing machine 100 having such a configuration, the rotation operation of the intermediate roller 115 is transmitted to the driver 130 when the intermediate roller 115 contacts the driver 130, and the driver 130 performs the driving operation.

In view of the gist of the above invention, the driving tool according to the present invention can be configured as follows. Each aspect is used not only alone or in combination with each other, but also in combination with the invention described in the claims.
(Aspect 1)
The drive roller facing portion includes a tip portion that collides with the driving material and avoids contact with the drive roller when the drive roller is placed at the separated position, and is opposite to the tip region. And a rear end region that comes into contact with the drive roller when the drive roller is placed at the launch position, and an intermediate portion between the front end region and the rear end region provided between the front end region and the rear end region. And having an area
The drive roller facing portion intermediate region has an arc portion having the same shape as an arc in a circle having a radius of a length obtained by adding the diameter of the drive roller to the radius of the rotating member.
(Aspect 2)
The support roller facing portion is a predetermined area from the support roller avoiding region for avoiding contact with the support roller when the drive roller is at the separation position, and from the support roller when the drive roller is at the launch position. An energized area that receives the energizing force, and a support roller facing portion intermediate area provided between the support roller avoiding area and the energized area,
The support roller facing portion intermediate region has an inclined shape having an angle intersecting the driver moving direction,
The inclined shape is configured to increase the height in the support roller direction for a while as it goes from the support roller avoidance area to the biased area.
(Aspect 3)
The straight line in which the rotation shaft of the rotation member, the rotation shaft of the support roller, and the rotation shaft of the drive roller placed at the launch position are arranged orthogonal to the moving direction of the driver.
(Aspect 4)
The amplifying mechanism is configured by an arm portion having a fulcrum portion, a force point portion configured in a region engaged with the holding unit moving mechanism, and an action point unit configured in a region coupled to the driving roller holding unit. Is done.

(Correspondence between each component of this embodiment and each component of the present invention)
The correspondence between each component of the present embodiment and each component of the present invention is as follows. In addition, this embodiment shows an example of the form for implementing this invention, and this invention is not limited to the structure of this embodiment.
The nail 161 is an example of the “driving material” according to the present invention. The nailing machine 100 is an example of a “driving tool” according to the present invention. The driver 130 is an example of the “driver” according to the present invention. The electric motor 111 is an example embodiment that corresponds to the “motor” according to the present invention. The intermediate roller 115 is an example embodiment that corresponds to the “rotating member” according to the present invention. The drive roller 120 is an example embodiment that corresponds to the “drive roller” according to the present invention. The support roller 123 is an example of the “support roller” according to the present invention. The drive roller holding part 140 is an example embodiment that corresponds to the “drive roller holding part” according to the present invention. The driving roller moving mechanism is an example of the “driving roller moving mechanism” according to the present invention. The electromagnetic solenoid 121 is an example of the “holding part moving mechanism” according to the present invention. The arm portion 122 is an example of the “connection mechanism” according to the present invention. The configuration of the arm portion 122 having the plunger engaging portion 122a, the fulcrum shaft portion 122b, and the action shaft portion 122c is an example of the “amplifying mechanism” according to the present invention. The biasing member 151b is an example embodiment that corresponds to the “biasing member” according to the present invention. The upper part 131 is an example of the “supporting roller facing part” according to the present invention. The lower part 132 is an example of the “driving roller facing part” according to the present invention. The driving roller rotating shaft 120b is an example embodiment that corresponds to the “rotating shaft of the driving roller” according to the present invention. The support roller rotating shaft 123b is an example embodiment that corresponds to the “rotating shaft of the support roller” according to the present invention. The intermediate roller rotating shaft 115b is an example embodiment that corresponds to the “rotating member rotating shaft” according to the present invention. The mechanism constituted by the lever portion 153 and the biasing mechanism main body holding portion 152 is an example of the “biasing force releasing mechanism” according to the present invention.

100 nailing machine (driving tool)
DESCRIPTION OF SYMBOLS 101 Main body part 103 Drive mechanism accommodating part 105 Driver guide 105a Contact arm 106 Driver path 106a Injection port 107 Handle 107a Trigger 108 Controller 110 Drive mechanism 110a Continuous line 111 Electric motor (motor)
112 pulley 113 driving belt 115 intermediate roller 115a intermediate roller rotating shaft 115b intermediate roller rotating shaft

115c engaging groove

115d abutting surface 120 driving roller 120a driving roller rotating shaft 120b driving roller rotating shaft 120c engaging convex 120d abutting surface 120e engagement groove portion 120f contact surface 121 electromagnetic solenoid 121a plunger 122 arm portion 122a plunger engagement portion 122b fulcrum shaft portion 122c action shaft portion 123 support roller 123a support roller rotation shaft portion 123b support roller rotation shaft 130 driver 130a striking portion 130b engagement Joint convex part 130c Contact surface 131 Upper part (support roller opposing part)
131a Upper tip region 131b Upper middle region 131b1 Upper middle region tip 131b2 Upper middle region rear end portion 131c Upper rear end region 132 Lower portion (drive roller facing portion)
132a First lower tip region 132b Second lower tip region 132c Lower middle region 132c1 Lower middle region tip 132c2 Lower middle region rear end 132d Lower rear end region 140 Driving roller holding portion 141 Driving roller holding portion main body 141a First elongated hole 141b Second long hole 142 Stopper portion 142a Extension portion 142b Wall portion 143 Energizing member 150 Support roller energizing mechanism 151 Energizing mechanism main body portion

151a Flange portion

151b Energizing member 152 Energizing mechanism main body holding portion 152a Rotating shaft portion 152b Top plate part

152c Flange part

152d Extension part 153 Lever part 153a Rotating shaft part

153b Operation part

153c Detachment part

153d Engagement part 160 Magazine 161 Nail (driving material)
170 battery

Claims

A driving tool for driving a driving material,
A motor,
A rotating member that is rotationally driven by the motor;
A driver that performs a driving operation of the driving material by moving linearly along a predetermined long axis;
A driving roller that is brought into contact with the rotating member and causes the driver to perform the driving operation by transmitting rotational driving of the rotating member to the driver;
A support roller configured to be able to sandwich the driver together with the drive roller;
A biasing member that biases the support roller toward the driver in a state where the drive roller and the support roller sandwich the driver;
The drive roller is configured to move between a separation position separated from the rotation member and a launch position that contacts the rotation member and is driven to rotate. When the drive roller is in the separation position, The launch operation of the driver is regulated,
When the drive roller is in the launch position, the driver is sandwiched between the support roller to which a predetermined urging force is applied by the urging member and the drive roller, and the rotation of the drive roller. A driving tool configured to perform the driving operation by driving.
A driving tool according to claim 1,
The driver has a driving roller facing portion facing the driving roller,
A contact start position for starting contact with the rotating member is set between the separation position and the launch position for the drive roller,
A drive roller moving mechanism for moving the drive roller between the separation position, the contact start position, and the launch position;
The driving roller is configured to move from the contact start position to the launch position along the outer periphery of the rotating member, and contacts the drive roller facing portion at the launch position. tool.
A driving tool according to claim 2, wherein
The drive roller moving mechanism is
A driving roller holding portion configured to hold the driving roller and to be switchable between the separation position, the contact start position, and the launch position;
A holding unit moving mechanism that performs a predetermined operation to switch the driving roller holding unit from the separated position to the contact start position;
A coupling mechanism that couples the drive roller holding part and the holding part moving mechanism;
The coupling mechanism is
When the driving roller holding portion is switched from the separated position to the contact start position, the operation of the holding portion moving mechanism is performed by maintaining the connection between the driving roller holding portion and the holding portion moving mechanism. Transmitted to the drive roller holder,
The driving roller holding portion is configured to release the connection between the driving roller holding portion and the holding portion moving mechanism when the driving roller holding portion is switched from the contact start position to the launch position. tool.
A driving tool according to claim 3, wherein
The driving mechanism according to claim 1, wherein the coupling mechanism includes an amplifying mechanism for amplifying the operation of the holding unit moving mechanism.
The driving tool according to any one of claims 1 to 4,
The drive roller facing portion includes a tip portion that collides with the driving material, a tip region that avoids contact with the drive roller when the drive roller is in the separated position, and a side opposite to the tip region And a rear end region that comes into contact with the drive roller when the drive roller is in the launch position, and a drive roller facing portion intermediate region provided between the front end region and the rear end region. Have
The driving roller facing portion intermediate region has a circular arc portion having a circular arc shape having the same shape as a circular arc having a radius of a length obtained by adding the diameter of the driving roller to the radius of the rotating member.
A driving tool according to any one of claims 1 to 5,
The driver has a support roller facing portion facing the support roller,
The support roller facing portion is separated from the support roller when the drive roller is placed at the separation position, and contacts the support roller when the drive roller is placed at the launch position. A driving tool characterized by that.
The driving tool according to claim 6,
The support roller facing portion is a predetermined area from the support roller avoiding region for avoiding contact with the support roller when the drive roller is at the separation position, and from the support roller when the drive roller is at the launch position. An energized area that receives the energizing force, and a support roller facing portion intermediate area provided between the support roller avoiding area and the energized area,
The support roller facing portion intermediate region has an inclined shape having an angle intersecting the driver moving direction,
The driving tool according to claim 1, wherein the inclined shape is configured to temporarily increase a height in the direction of the support roller as it goes from the support roller avoidance region to the biased region.
The driving tool according to any one of claims 1 to 7,
The driving tool characterized in that the rotating shaft of the rotating member, the rotating shaft of the support roller, and the rotating shaft of the driving roller placed at the launch position are arranged on a substantially straight line. .
A driving tool according to any one of claims 1 to 8,
The driving tool according to claim 1, wherein the urging member includes a plurality of disc springs arranged in series.
A driving tool according to any one of claims 1 to 9,
A driving tool comprising an urging force releasing mechanism for releasing the urging force of the urging member when the driving roller is in the launch position.