NZ785832A - Fastening tool - Google Patents
Fastening toolInfo
- Publication number
- NZ785832A NZ785832A NZ785832A NZ78583222A NZ785832A NZ 785832 A NZ785832 A NZ 785832A NZ 785832 A NZ785832 A NZ 785832A NZ 78583222 A NZ78583222 A NZ 78583222A NZ 785832 A NZ785832 A NZ 785832A
- Authority
- NZ
- New Zealand
- Prior art keywords
- bit
- motor
- unit
- driver bit
- fastening
- Prior art date
Links
- 230000005611 electricity Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
Abstract
fastening tool including a bit holding unit configured to hold a driver bit so as to be rotatable and to be movable in an axis direction, a first drive unit having a first motor configured to rotate the driver bit held by the bit holding unit, and a second drive unit having a second motor configured to move the driver bit held by the bit holding unit along the axis direction. ed to move the driver bit held by the bit holding unit along the axis direction.
Description
FASTENING TOOL
This application claims priority from Japanese patent application 2021-034722, filed
4 March -DSDQHVH patent application 2021-034723, filed 4 March VH patent
application 2021-034724, filed 4 March VH patent application 2021-034725, filed
4 March VH patent application 2021-149653, filed 14 September DQG -DSDQHVH patent
application 2021-149654, filed 14 September 2021, the entire contents of which are incorporated by
TECHNICAL FIELD
[0001a] The present invention relates to a fastening tool configured to engage a driver bit with a screw,
to push and press the screw against a fastening target with the driver bit, and to rotate the driver bit for
screwing.
BACKGROUND ART
Known is a tool called a portable striking machine configured to strike out connected stoppers
loaded in a magazine sequentially from a tip end of a driver guide by using an air re of a
compressed air supplied from an air compressor or a combustion re of a gas.
As a ng machine configured to use a combustion pressure of a gas, there is a cordless
striking machine where a small gas cylinder is mounted on a striking machine body, and a screw striking
machine configured to use screws as ted stoppers to be struck is suggested (for example, refer to
PTL 1).
In addition, suggested is a screw ng machine configured to compress a spring by a drive
force of a motor configured to rotate a screw, and to strike the screw by urging of the spring (for example,
refer to PTL 2).
CITATION LIST
PATENT DOCUMENT
PTL 1: Japanese Patent No.5,590,505
PTL 2: Japanese Patent 97,547
The screw striking machine configured to use a combustion pressure of a gas requires both a
battery and a gas cylinder. In addition, in the screw striking machine configured to strike a screw by
urging of the spring, it is difficult to adjust excess or deficiency in screw striking force.
SUMMARY
The present invention has been made to solve such problems, and an object of the
present invention is to provide a fastening tool configured to press a screw against a fastening
target by a drive force of a motor.
In order to solve the above-described problems, the t invention provides a
fastening tool including a bit holding unit configured to hold a driver bit so as to be rotatable
and to be movable in an axis direction, and a motor ured to move the driver bit held by
the bit holding unit along the axis direction in which a screw engaged with the driver bit is
d against a fastening .
In addition, the present invention provides a fastening tool including a bit holding unit
configured to hold a driver bit so as to be rotatable and to be e in an axis direction, a
first drive unit having a first motor configured to rotate the driver bit held by the bit holding
unit, and a second drive unit having a second motor configured to move the driver bit held by
the bit holding unit along the axis direction.
BRIEF DESCRIPTION OF DRAWINGS
is a side cross-sectional view showing an example of an internal structure of a
fastening tool according to the present embodiment.
is a partially broken ctive view showing the e of the internal
structure of the fastening tool according to the present embodiment.
is a partially broken perspective view showing the example of the internal
structure of the fastening tool according to the present embodiment.
is a partially broken perspective view showing the example of the internal
structure of the fastening tool according to the present ment.
is a side view showing the example of the fastening tool according to the
present embodiment.
is a front view showing the example of the fastening tool ing to the
present embodiment.
is a top view showing the example of the fastening tool according to the
present embodiment.
is a perspective view showing the example of the ing tool according to
the present embodiment.
is a perspective view g the example of the fastening tool according to
the present embodiment.
is a perspective view showing details of a screw feeding unit according to
present embodiment.
is a perspective view showing an example of a nose unit according to the
present embodiment.
is a perspective view showing the e of the nose unit according to the
present embodiment.
is a side cross-sectional view showing an example of an operation of the
ing tool according to the present embodiment.
is a partially broken perspective view showing the example of the ion
of the fastening tool according to the present embodiment.
is a partially broken perspective view showing the e of the operation
of the fastening tool according to the t embodiment.
is a perspective view showing an example of an ion of attaching and
detaching a driver bit in the fastening tool according to the present embodiment.
is a perspective view showing the example of the operation of attaching and
detaching the driver bit in the fastening tool according to the present embodiment.
A is a side cross-sectional view showing a ed embodiment of the
fastening tool according to the t embodiment.
B is a side cross-sectional view showing another modified embodiment of the
fastening tool according to the present embodiment.
is a block diagram g a modified embodiment of the fastening tool
according to the present embodiment.
A is a cross-sectional view showing a ed state of a screw.
B is a cross-sectional view showing a fastened state of the screw.
C is a cross-sectional view showing a fastened state of the screw.
is a plan view showing an example of a setting unit.
is a flowchart showing an operation example of the fastening tool according
to the ed embodiment of the present embodiment.
A is a perspective view showing a modified embodiment of an installation
position of the setting unit.
B is a perspective view showing a modified embodiment of the installation
position of the setting unit.
C is a perspective view showing a modified embodiment of the installation
position of the setting unit.
D is a perspective view showing a modified embodiment of the installation
position of the setting unit.
DESCRIPTION OF EMBODIMENTS
Hereinafter, embodiments of the fastening tool of the present invention will be
described with reference to the drawings.
<Configuration Example of Fastening Tool of Present Embodiment>
is a side cross-sectional view showing an example of an internal ure of a
fastening tool according to the present embodiment, and FIGS. 2A to 2C are partially broken
perspective views showing the example of the internal structure of the fastening tool according
to the present embodiment. is a side view showing the example of the fastening tool
according to the present embodiment, is a front view showing the example of the
fastening tool ing to the t embodiment, and is a top view showing the
example of the fastening tool according to the present embodiment. Note that, a cut surface
in is an A-A line in . In addition, FIGS. 4A and 4B are perspective views
g the example of the fastening tool according to the present embodiment.
A fastening tool 1 of the present embodiment includes a tool body 10 and a handle 11.
In the fastening tool 1, the handle 11 extends in another direction intersecting with an extension
direction of the tool body 10 extending in one direction. In the ing tool 1, the direction
in which the tool body 10 extends is ed to as a front and rear direction, and the direction
in which the handle 11 s is referred to as an upper and lower direction. In addition, the
fastening tool 1 includes a battery attaching part 13 to which a battery 12 is detachably attached,
at a lower part of the handle 11.
The fastening tool 1 includes a bit holding unit 3 configured to hold a driver bit 2 so
as to be rotatable and to be movable in the front and rear direction along an axis direction, a
first drive unit 4 configured to rotate the driver bit 2 held by the bit g unit 3, and a second
drive unit 5 ured to move the driver bit 2 held by the bit holding unit 3 in the front and
rear direction along the axis direction.
Further, the fastening tool 1 includes a screw odating unit 6 in which a screw
200 is accommodated, a screw feeding unit 7 configured to feed the screw accommodated in
the screw accommodating unit 6, and a nose unit 8 configured to be pressed against a fastening
target to which the screw is to be fastened, and to eject the screw.
The bit holding unit 3 includes a holding member 30 configured to detachably hold the
driver bit 2, a rotation guide member 31 configured to support the g member 30 so as to
be e in the front and rear direction along an axis direction of the driver bit 2, and to
rotate together with the holding member 30, a moving member 32 configured to move the
holding member 30 in the front and rear direction along the guide member 31, and an urging
member 33 configured to urge rearward the moving member 32.
The holding member 30 is constituted by, for example, a circular cylinder-shaped
member having an outer diameter slightly r than an inner diameter of the on guide
member 31, and configured to be inserted inside the rotation guide member 31. The holding
member 30 is provided at an end n on a front side along the axis direction with an opening
30a having a shape that matches a cross-sectional shape of an insertion portion 20 of the driver
bit 2. The holding member 30 has a mechanism configured to detachably hold the insertion
portion 20 of the driver bit 2 by a known mechanism and provided at the opening 30a. In the
holding member 30, the g 30a is exposed inside the rotation guide member 31, and the
insertion portion 20 of the driver bit 2 is detachably inserted in the opening 30a.
The rotation guide member 31 has a cylindrical shape extending along an extension
direction of the tool body 10, in which the holding member 30 is inserted, and an end portion
on a front side is rotatably supported via a bearing 34a by a metal front frame 10b ed on
a front side of a resin case 10a constituting an exterior of the tool body 10. In addition, an end
portion on a rear side of the rotation guide member 31 is ted to the first drive unit 4.
In the rotation guide member 31, groove portions 31a extending in the front and rear
direction along the axis direction of the driver bit 2 are formed at two locations on side parts
facing in a radial direction. The rotation guide member 31 is connected to the holding member
via connecting members 30b configured to penetrate the holding member 30 in the radial
direction and to de from both sides of the holding member 30 as the connecting members
30b enter the groove portions 31a.
Thereby, when the on guide member 31 rotates, the connecting members 30b are
pushed by the groove portions 31a of the rotation guide member 31, so that the holding member
rotates together with the rotation guide member 31. Further, the connecting members 30b
are guided by the groove portions 31a of the rotation guide member 31, so that the holding
member 30 moves in the front and rear direction along the axis direction of the driver bit 2.
The moving member 32 is an example of a transmission member, and includes a first
moving member 32a configured to rotate er with the holding member 30 and to move the
holding member 30 in the front and rear direction along the on guide member 31, a second
moving member 32c configured to be supported via a bearing 32b by the first moving member
32a and to push the first moving member 32a with the bearing 32b, and a cushioning member
32d attached to a rear side of the second moving member 32c.
The first moving member 32a is constituted by, for example, a circular cylinder-shaped
member having an inner diameter slightly greater than an outer diameter of the rotation guide
member 31, and configured to be inserted to an outer side of the rotation guide member 31.
The first moving member 32a is connected to the holding member 30 via the connecting
members 30b protruding from the groove portions 31a of the rotation guide member 31.
The bearing 32b is inserted between an outer periphery of the first moving member
32a and an inner ery of the second moving member 32c, and is configured to bly
support the first moving member 32a with respect to the second moving member 32c.
[0023] The second moving member 32c is connected to the first moving member 32a via the
bearing 32b in a state where movement in the front and rear ion along the axis direction
is restricted.
Thereby, as the second moving member 32c moves in the front and rear direction along
the axis ion, the first moving member 32a is pushed by the second moving member 32c
via the bearing 32b, and moves in the front and rear direction along the axis direction together
with the second moving member 32c. Further, the first moving member 32a is configured to
be rotatable with respect to the second moving member 32c.
The urging member 33 is constituted by a coil spring in the present example, is inserted
n the front frame 10b provided on the front side of the case 10a of the tool body 10 and
the second moving member 32c of the moving member 32, outside the rotation guide member
31, and is in contact with a spring seat arranged to contact an end face of an outer ring of the
g 32b. The urging member 33 is compressed as the moving member 32 moves forward,
thereby applying, to the moving member 32, a force for pushing rearward the moving member
[0026] The first drive unit 4 includes a bit rotating motor 40 configured to be driven by
electricity supplied from the battery 12, and a speed reducer 41. The bit ng motor 40 is
an example of the first motor, in which a shaft 40a of the bit rotating motor 40 is connected to
the speed reducer 41, and a shaft 41a of the speed reducer 41 is connected to the rotation guide
member 31. In the first drive unit 4, the speed reducer 41 is configured to use a planetary gear,
and the bit rotating motor 40 is arranged coaxially with the rotation guide member 31 and the
driver bit 2 held by the holding member 30.
In the first drive unit 4, the bit rotating motor 40 and the speed reducer 41 are attached
to a metal rear frame 10c provided on a rear side of the case 10a of the tool body 10, and the
shaft 41a of the speed reducer 41 is supported by the rear frame 10c via a bearing 42.
The bit holding unit 3 and the first drive unit 4 are integrally led and unitized
by connecting the front frame 10b and the rear frame 10c with a coupling member 10d
extending in the front and rear direction, and are fixed to the case 10a of the tool body 10 by a
screw 10e. The bit holding unit 3 and the first drive unit 4 are ured to be detachably
attached to the tool body 10 in a state where each component is assembled. Therefore, the
attaching ability is improved because each component is not independently fixed to the tool
body 10.
Further, in the bit holding unit 3, an end portion on the front side of the rotation guide
member 31 is supported via the bearing 34a by the front frame 10b ed on the front side
of the case 10a of the tool body 10, and an end portion on the rear side of the rotation guide
member 31 is supported via the shaft 41a of the speed reducer 41 and the bearing 42 by the rear
frame 10c ed on the rear side of the case 10a. Therefore, in the bit holding unit 3, the
rotation guide member 31 is bly supported by the tool body 10.
[0030] Thereby, the first drive unit 4 is configured to rotate the rotation guide member 31 by
the bit rotating motor 40. When the rotation guide member 31 rotates, the connecting
members 30b are pushed by the groove portions 31a of the rotation guide member 31, so that
the holding member 30 configured to hold the driver bit 2 rotates er with the rotation
guide member 31.
[0031] The second drive unit 5 includes a bit moving motor 50 configured to be driven by
electricity supplied from the battery 12, and a speed r 51. The bit moving motor 50 is
an example of the motor and the second motor, in which a shaft 50a of the bit moving motor 50
is ted to the speed reducer 51, and a shaft 51a of the speed reducer 51 is connected to a
pulley 52, which is an example of the transmission member. In the second drive unit 5, the
pulley 52 is supported by the tool body 10 via a bearing 53. In the second drive unit 5, the
shaft 50a of the bit moving motor 50 is arranged along the extension direction of the handle 11.
In the second drive unit 5, a wire 54, which is an example of the transmission ,
is wound on the pulley 52, and the wire 54 is connected to the second moving member 32c of
the moving member 32.
Thereby, the second drive unit 5 is configured to move forward the second moving
member 32c by rotating the pulley 52 by the bit moving motor 50 to wind up the wire 54. In
the bit holding unit 3, when the second moving member 32c moves d, the first moving
member 32a is pushed via the bearing 32b, and the first moving member 32a moves forward
along the axis direction, er with the second moving member 32c. The first moving
member 32a moves forward, so that the holding member 30 connected to the first moving
member 32a via the connecting members 30b moves forward.
The second drive unit 5 is arranged offset to one side with respect to a substantial
center in a right and left direction of the fastening tool 1 so that a tangential direction of a
portion of the pulley 52 where the wire 54 is wound follows the extension direction of the
rotation guide member 31. Thereby, the wire W between the pulley 52 and the second moving
member 32c is stretched linearly along a moving direction of the moving member 32, and
increases in load at a time of winding up the wire 54 by the pulley 52 and load at a time of
pulling out the wire W from the pulley 52 are suppressed.
The first drive unit 4 is ed at the rear, which is one side of the tool body 10, with
the handle 11 interposed therebetween. In addition, the second drive unit 5 is ed at the
front, which is the other side of the tool body 10, with the handle 11 interposed therebetween.
In the screw accommodating unit 6, a plurality of screws 200 are connected by a
connecting band and a spirally wound ted screw is accommodated.
is a perspective view showing details of a screw g unit according to
present embodiment. The screw feeding unit 7 includes a screw feeding motor 70, a pinion
gear 71 attached to a shaft of the screw feeding motor 70, a rack gear 72 in mesh with the pinion
gear 71, and an engaging part 73 connected to the rack gear 72 and engaged with the ted
screw fed from the screw accommodating unit 6. The screw feeding unit 7 constitutes a screw
feeding transmission part configured to transmit a drive force of the screw feeding motor 70 to
the engaging part 73, by the pinion gear 71 and the rack gear 72. The engaging part 73 is
urged upward by a compression spring (not shown) via a component on which the rack gear 72
is , and is configured so that the engaging part 73 and the screws 200 do not descend
due to weights thereof in a state where power is not supplied to the screw feeding motor 70.
In the screw feeding unit 7, the screw feeding motor 70 is fixed to a sub-frame 74, and
the rack gear 72 is supported by the sub-frame 74 so as to be movable in the upper and lower
direction along a feeding direction of the ted screw. The screw feeding unit 7 is
unitized by integrally assembling each component by ness-shaped fitting such as a claw,
fastening of a screw 75, or the like.
FIGS. 6A and 6B are perspective views showing an example of the nose unit according
to the present embodiment. The nose unit 8 is an example of the first nose unit, and includes
an ejection passage constituting n 80a, which constitutes an ejection passage 80 to which
the screw 200 is supplied by the screw feeding unit 7 and through which the driver bit 2 passes,
a contact member 81 having an ejection port 81a formed to icate with the ejection
passage 80 and ured to come into t with a fastening target, a contact arm 82
configured to move in the front and rear direction in conjunction with the contact member 81,
and an adjusting part 83 configured to restrict an amount of movement of the contact arm 82.
In addition, the nose unit 8 includes a cover member 88 ured to cover a path, through
which the screw 200 is to pass, from the screw accommodating unit 6 to the ejection passage
80 in an openable and closable manner.
As shown in , the fastening tool 1 includes a contact switch part 84 configured
to be pushed and actuated by the contact arm 82. Further, as shown in , in the
fastening tool 1, the tool body 10 has a nose body part 10f, and the nose body part 10f has an
on passage constituting portion 80b, which constitutes the ejection passage 80 by a
combination with the ejection passage constituting n 80a of the nose unit 8. The nose
body part 10f is an example of the second nose unit, and is integrally configured with, for
example, the front frame 10b. Note that, the nose body part 10f may have a configuration
where a component ndent of the front frame 10b is fixed to the front frame 10b.
[0041] In the nose unit 8, the contact member 81 is supported to be movable in the front and
rear direction, and the contact arm 82 is configured to move in the front and rear direction in
conjunction with the contact member 81. In the nose unit 8, the contact member 81 is urged
d by an urging member (not , and the contact member 81 pressed against the
fastening target and moved rd is urged and moved forward by the urging member.
[0042] In the nose unit 8, an amount of movement of the contact arm 82 until the contact arm
82 is moved rearward due to the pressing of the contact arm 81 against the fastening target and
the contact switch part 84 is actuated is adjusted by the adjusting part 83. The contact switch
part 84 is switched between actuation and non-actuation by being pushed by the contact arm
82. In the present e, a state where the contact switch part 84 is not pressed by the
contact arm 82 and is not actuated is referred to as ‘off of the contact switch part 84’, and a state
where the contact switch part 84 is pushed by the contact arm 82 and is thus actuated is referred
to as ‘on of the contact switch part 84’.
[0043] In the nose unit 8, the respective components constituting the on passage 80, the
contact member 81, and the contact arm 82 are ally assembled and unitized to the subframe
86 by unevenness-shaped fitting such as a claw, fastening of a screw 85, or the like, and
are fixed to the front frame 10b constituting the tool body 10 by a screw 87. When the nose
unit 8 is fixed to the front frame 10b, the ejection passage 80 is constituted by the ejection
passage constituting portion 80b of the nose body part 10f fixed to the tool body 10-side and
the ejection passage constituting portion 80a that is a component on the nose unit 8-side.
The sub-frame 86 having a function of fixing the nose unit 8 to the tool body 10 is
formed with the ejection passage constituting portion 80a, which constitutes a part of the
on passage 80, and also has a function of positioning the ejection passage 80 with respect
to the tool body 10. Thereby, when the nose unit 8 is fixed to the front frame 10b, the ejection
e constituting portion 80a is correctly positioned, and even when the nose unit 8 is
configured to be detachably attached to the tool body 10, the ejection passage 80 is suppressed
from being positionally gned, particularly, in the radial ion with respect to a
movement path of the driver bit 2. Further, the t switch part 84 is attached to the tool
body 10-side, and when the nose unit 8 is fixed to the front frame 10b, a position of the contact
arm 82 on a side facing the contact switch part 84 matches the contact switch part 84.
The screw feeding unit 7 is configured integrally with the front frame 10b, or is fixed
to the front frame 10, so that the sub-frame 74 is fixed to the nose body part 10f constituting
the tool body 10 by the screw 76.
[0046] The fastening tool 1 includes a trigger 9 configured to e an operation and a
trigger switch part 90 configured to be actuated by an operation of the trigger 9. The trigger
9 is provided on a front side of the handle 11 and is configured to be operable by a finger of a
hand gripping the handle 11. The trigger switch part 90 is configured to be pushed and
actuated by the r 9.
[0047] The trigger switch part 90 is switched between ion and non-actuation by being
pushed by the trigger 9. In the present example, a state where the trigger 9 is not operated, the
trigger switch part 90 is not pushed by the trigger 9 and the trigger switch part 90 is not actuated
is referred to as ‘off of the trigger switch part 90’, and a state where the trigger 9 is operated
and the trigger switch part 90 is pushed and actuated by the trigger 9 is referred to as ‘on of the
trigger switch part 90’.
The ing tool 1 includes a control unit 100 configured to control the first drive
unit 4, the second drive unit 5 and the screw feeding unit 7, based on outputs of the trigger
switch part 90 configured to be actuated by the operation of the trigger 9 and the contact switch
part 84 configured to be pushed and actuated by the contact member 81. In the present
example, the control unit 100 is installed in the battery attaching part 13 ed at the lower
part of the handle 11.
tion Example of Fastening Tool of Present Embodiment>
is a side cross-sectional view showing an example of an operation of the
fastening tool according to the present embodiment, and FIGS. 8A and 8B are lly broken
perspective views showing the example of the ion of the fastening tool according to the
present embodiment. In the below, a fastening operation of the fastening tool according to the
present embodiment is described with reference to the respective drawings.
[0050] In a standby state, as shown in a tip end of the driver bit 2 is located at a standby
position P1 behind the ejection passage 80, and the fastening tool 1 can supply the screw 200
to the ejection passage 80.
When the t member 81 is pressed against the ing target, the contact switch
part 84 is pushed by the contact arm 82, the contact switch part 84 becomes on, the trigger 9 is
operated and the trigger switch part 90 s on, the control unit 100 drives the bit moving
motor 50 of the second drive unit 5 and also drives the bit rotating motor 40 of the first drive
unit 4 at a predetermined .
When the bit moving motor 50 is driven and rotates in a positive direction, which is
one direction, the pulley 52 rotates in the positive direction, so that the wire 54 is wound on the
pulley 52. The wire 54 is wound on the pulley 52, so that the second moving member 32c
connected to the wire 54 is guided to the rotation guide member 31 and moves forward along
the axis direction. When the second moving member 32c moves forward, the first moving
member 32a is pushed by the second moving member 32c via the bearing 32b, and moves
forward along the axis direction while compressing the urging member 33, together with the
second moving member 32c.
When the first moving member 32a moves d, the connecting members 30b are
guided to the groove portions 31a of the rotation guide member 31, so that the holding member
connected to the first moving member 32a by the ting members 30b moves d
along the axis direction of the driver bit 2.
Thereby, the driver bit 2 held by the holding member 30 moves forward, engages with
the screw 200 supplied to the on port 80 of the nose unit 8, moves the screw 200 forward
and presses the same against the fastening target.
When the bit rotating motor 40 is driven and rotates in the positive direction, which is
one direction, the rotation guide member 31 rotates in the positive direction. When the
rotation guide member 31 rotates in the positive direction, the ting s 30b
connected to the holding member 30 is pushed by the groove portions 31a of the rotation guide
member 31, so that the holding member 30 s together with the rotation guide member 31.
Thereby, the driver bit 2 held by the holding member 30 rotates the screw 200 in the
positive direction (clockwise direction) and screws the same into the fastening . The
control unit 100 moves forward the driver bit 2 by the first drive unit 4 to make the driver bit 2
to follow the screw to be screwed into the fastening target, based on a load applied to the bit
rotating motor 40, the number of ons of the bit rotating motor 40, a load d to the bit
moving motor 50, the number of rotations of the bit moving motor 50, and the like, in
conjunction with the operation of rotating the driver bit 2 by the first drive unit 4 to screw the
screw into the fastening target.
As shown in the control unit 100 stops the driving of the bit rotating motor 40
and moves reversely the bit moving motor 50 when the tip end of the driver bit 2 protrudes from
the ejection port 81a of the contact member 81 and reaches a predetermined actuation end
position P2. The control unit 100 may determine that the tip end of the driver bit 2 has reached
the actuation end position P2, based on the number of rotations of the bit moving motor 50, or
may vary the actuation end position P2, based on the load applied to the bit rotating motor 40,
the number of rotations of the bit rotating motor 40, the load applied to the bit moving motor
50, the number of rotations of the bit moving motor 50, and the like.
When the bit moving motor 50 rotates in an opposite direction, which is the other
direction, the pulley 52 s in the opposite direction, so that the wire 54 is pulled out from
the pulley 52. The wire 54 is pulled out from the pulley 52, so that the urging member 33
compressed by the second moving member 32c moving forward is stretched to push the second
moving member 32c rearward.
The second moving member 32c is pushed rearward by the urging member 33, so that
it is guided to the rotation guide member 31 and moves rearward along the axis direction.
When the second moving member 32c moves rearward, the first moving member 32a is pushed
by the second moving member 32c via the bearing 32b, and moves rearward along the axis
direction, together with the second moving member 32c.
When the first moving member 32a moves rearward, the ting members 30b are
guided to the groove portions 31a of the rotation guide member 31, so that the g member
connected to the first moving member 32a by the connecting members 30b moves rearward
along the axis direction of the driver bit 2.
Thereby, the driver bit 2 held by the holding member 30 moves rearward, and the tip
end of the driver bit 2 returns to the standby on P1. Note that, the moving member 32 is
provided with the cushioning member 32d made of rubber or the like on a rear side of the second
moving member 32c, so that while the second moving member 32c moves rearward, the second
moving member 32c is suppressed from directly colliding with the rear frame 10c, and
therefore, sound generation and damage can be suppressed. When the second moving member
32c is pushed rearward by the urging member 33 and the tip end of the driver bit 2 s to
the standby position P1, the control unit 100 stops the rotation of the bit moving motor 50.
When the trigger switch part 90 becomes off, the control unit 100 rotates the screw feeding
motor 70 in one direction to lower the engaging part 73. When the engaging part 73 descends
to a position where it engages with a next screw 200, the control unit 100 raises the engaging
part 73 by ng reversely the screw feeding motor 70, and supplies the next screw 200 to the
supply passage 80.
The fastening tool 1 includes the battery 12 detachably attached to the battery attaching
part 13 provided to the handle 11, the first drive unit 4 configured to rotate the driver bit 2 by
the bit rotating motor 40, which is configured to be driven by electricity supplied from the
battery 12, and the second drive unit 5 configured to move the driver bit 2 in the front and rear
direction along the axis direction by the bit moving motor 50, which is configured to be driven
by electricity supplied from the battery 12. This eliminates a need to connect a hose, as in a
pneumatically driven fastening tool, ing workability.
In addition, the ing tool 1 includes the second drive unit 5 configured to move
the driver bit 2 in the front and rear direction along the axis direction, so that it is possible to
perform the fastening of the screw t moving the fastening tool 1 toward the fastening
target, in a state where the contact member 81 is butted against the fastening target. This
eliminates a need to move the tool body toward a fastening target, as in a usual drill driver or
impact , improving workability.
Further, since the second drive unit 5 is configured to press the screw engaged with the
driver bit 2 against the ing target by the drive force of the bit moving motor 50, it is
possible to easily adjust excess or deficiency in force for pressing the screw t the
fastening target, so that it is possible to press the screw against the fastening target with an
appropriate force.
Further, the first drive unit 4 is provided at the rear of the tool body 10, which is one
side, with the handle 11 interposed therebetween, and the second drive unit 5 is provided at the
front of the tool body 10, which is the other side, with the handle 11 interposed therebetween.
Thereby, the first drive unit 4 and the second drive unit 5, which each have a motor and therefore
are relatively heavy, are dispersedly arranged at the front and at the rear with the handle 11
interposed etween. Therefore, in a case where the fastening operation is performed
while gripping the handle 11 with a hand and maintaining the tool body 10 in a substantially
horizontal ion that is an extension direction, a weight balance n front and rear of
the handle 11 is substantially even, and workability is improved.
[0066] Further, the second drive unit 5 is arranged offset to the left, which is one side with
respect to the ntial center in the right and left direction of the fastening tool 1, and the
screw feeding motor 70 of the screw feeding unit 7 is arranged offset to the right, which is the
other side with respect to the center in the right and left direction of the fastening tool 1.
Thereby, a weight balance between the left and right is also substantially even, and workability
is improved.
As described above, in the fastening tool 1, the first drive unit 4 configured to rotate
the driver bit 2 and the second drive unit 5 configured to move the driver bit 2 in the front and
rear direction along the axis direction are driven by independent motors. Thereby, as
compared to a configuration where two operations are performed by a single drive source, a
drive force transmission mechanism, a mechanism for causing the drive force to be transmitted
at a predetermined timing, and the like are unnecessary, so that the configuration can be
simplified. In addition, since the configuration can be fied, a weight can be reduced.
Further, the interlocking of two ions can be performed by control.
Further, the screw feeding unit 7 can also be driven with the electricity supplied from
the y 12 by using the screw feeding motor 70 as a drive source, and does not require
supply of an air pressure. Further, since the screw feeding unit 7 is driven by a motor
independent of the rotation and movement of the driver bit 2, the configuration can be
fied, as compared to a configuration in which two or three operations are performed by a
single drive source. Further, the interlocking of a plurality of operations can be performed by
control.
The screw feeding unit 7 is configured to be detachably attached to the nose body part
10f constituting the tool body 10, in a state where each component is unitized and assembled.
Thereby, each component such as the screw feeding motor 70 is not ndently fixed to the
tool body 10, so that the assembling property is improved and maintenance, replacement at the
time of inspection, and the like can also be easily performed. In addition, the accuracy among
the respective components can be improved, as compared to a configuration where each
component is independently fixed to the tool body 10. Further, since the nose body part 10f
to which the screw g unit 7 is fixed is integrated with or fixed to the front frame 10b
tuting the tool body 10, the cy of the attaching position of the screw feeding unit 7
to the tool body 10 can be improved. Further, since the nose body part 10f constitutes a part
of the ejection e 80 through which the driver bit 2 passes, the accuracy of the attaching
position of the screw feeding unit 7 to the ejection passage 80 can be improved.
[0070] FIGS. 9A and 9B are perspective views showing an example of an operation of
attaching and detaching the driver bit in the fastening tool according to the present embodiment.
Subsequently, the operation of attaching and detaching the driver bit 2 is described with
reference to the respective drawings.
In the ing tool 1, as shown in the tip end of the driver bit 2 located at the
standby position P1 is located at an inner side of the nose unit 8 and is not exposed to the
ejection port 81a of the t member 81. ore, when replacing the driver bit 2, the
nose unit 8 is ed and detached.
To attach and detach the nose unit 8, the screw 87 is first removed. By removing the
screw 87, the nose unit 8 can be removed from the fastening tool 1, as shown in . The
nose unit 8 is configured to be detachably attached to the tool body 10 in a state where each
component is assembled, so that the contact member 81 covering the end portion on the front
side of the tool body 10, the components constituting the ejection port 80, and the like are
integrally removed. When the nose unit 8 is removed the front frame 10b constituting the tool
body 10, the ejection e constituting portion 80a, which is a component on the nose unit
8-side, is d from the ejection passage constituting portion 80b of the nose body part 10f
fixed to the tool body 10-side, and the ejection passage 80 is exposed.
Thereby, the end portion on the front side of the rotation guide member 31 is exposed
to the end portion on the front side of the tool body 10, and the driver bit 2 is exposed from the
opening of the end portion on the front side of the rotation guide member 31. Therefore, the
driver bit 2 can be removed from the holding member 30 by griping the driver bit with a tool
such as pliers and pulling out the driver bit.
When attaching the driver bit 2, the driver bit 2 is inserted from the opening of the
rotation guide member 31 and pushed into the opening 30a of the holding member 30, so that
the driver bit 2 is held by the holding member 30. Then, the nose unit 8 is mounted to the end
portion on the front side of the tool body 10 and the screw 87 is fastened, so that the nose unit
8 is fixed to the tool body 10.
Note that, in a configuration where the pulley 52 does not rotate even if an external
force is applied to the pulley 52 while the bit moving motor 50 is stopped, due to a relation of
a reduction ratio of the speed reducer 51 of the second drive unit 5, a bit exchange mode may
be provided in which the rotation of the bit moving motor 50 is stopped in a state where the
moving member 33 is moved to an exchange position where the tip end of the driver bit 2 is
caused to de from the rotation guide member 31 by a predetermined amount.
[0076] The nose unit 8 is configured to be ably attached to the tool body 10 in a state
where each component constituting the ejection e 80, the contact member 81, and the
contact arm 82 is unitized and assembled. This is not a uration in which each
component such as the contact arm 82 is independently fixed to the tool body 10, and therefore,
the assembling ty is improved. In addition, the accuracy among the respective
components can be improved, as compared to a configuration where each component is
ndently fixed to the tool body 10. r, since the contact switch part 84 that requires
wiring is attached to the tool body 10-side, it is not necessary to connect or disconnect the
wiring.
<Modified Embodiments of ing Tool of Present Embodiment>
A is a side cross-sectional view showing a modified embodiment of the
fastening tool according to the present embodiment, B is a side cross-sectional view
showing another modified ment of the ing tool according to the present
embodiment, and is a block diagram showing the modified embodiment of the fastening
tool according to the present embodiment.
[0078] As described above, the fastening tool 1 includes the second drive unit 5 ured to
move the driver bit 2 in the front and rear direction along the axis direction, and the second
drive unit 5 is configured to be driven by the bit moving motor 50, and the moving member 32
connected, by the wire 54, to the pulley 52 configured to be driven and to rotate by the bit
moving motor 50 and the holding member 30 connected to the moving member 32 are
configured to move forward along the axis direction of the driver bit 2, along the rotation guide
member 31. y, an amount of movement (amount of e) of the driver bit 2 can be
controlled by controlling an amount of rotation of the bit moving motor 50. That is, by
rotating the bit moving motor 50 in conjunction with the rotation of the bit ng motor 40
configured to rotate the driver bit 2 in a direction in which the screw 200 is fastened, the amount
of advance of the driver bit 2 configured to advance following the screw 200 is controlled by
an amount of rotation of the bit moving motor 50, as the screw 200 is ed. As a result, a
stop position of the driver bit 2 along the axis direction can be controlled.
[0079] FIGS. 12A to 12C are cross-sectional views g fastened states of the screw, in
which A shows a state where a head portion 201 of the screw 200 does not float or is
not buried with respect to a surface of a fastening target 202, i.e., is so-called flush with the
surface, B shows a state where the head portion 201 of the screw 200 floats from the
fastening target 202, and C shows a state where the head portion 201 of the screw 200
is buried in the fastening target 202.
In the fastening tool 1, in a case where the screw 200 is a countersunk screw, the
amount of e of the driver bit 2 is preferably set so that a e of the head portion 201
of the screw 200 becomes the same as, so-called flush with the surface of the fastening target
202 when the tip end of the driver bit 2 reaches the actuation end position P2, as shown in 12A. Note that, the screw 200 is not limited to the countersunk screw, and in a case of a pan,
a bind, a truss, or the like, the amount of advance of the driver bit 2 is preferably set so that the
seat surface of the head portion 201 of the screw 200 is in contact with the surface of the
fastening target 202 and the head n 201 of the screw 200 does not float from the fastening
target 201.
[0081] In a case where the head portion 201 of the screw 200 floats from the fastening target
202 at the time when the tip end of the driver bit 2 reaches the actuation end position P2, as
shown in B, the amount of advance of the driver bit 2 may be increased to advance the
actuation end position P2. On the other hand, in a case where the head portion 201 of the
screw 200 is buried in the fastening target 202, as shown in C, the amount of advance
of the driver bit 2 may be reduced to t the actuation end position P2.
Therefore, a setting unit 110 configured to set the amount of advance of the driver bit
2 is provided. The g unit 110 is an example of the setting means, and is configured so
that a plurality of setting values can be selected or any setting value can be selected steplessly.
As shown in A, for example, the setting unit 110 has a uration where a setting
value is selected by a rotary dial.
Among methods of providing a dedicated setting means for setting the amount of
movement (amount of advance) of the driver bit 2, in the configuration where the rotary dial
described above is provided, as a means for converting an operator's operation into an electric
signal, a method using a potentiometer whose resistance value changes depending on a rotation
angle of a shaft to which the dial is connected, a rotary encoder configured to output a pulse
corresponding to the rotation angle, or the like is considered. The control unit 100 is
configured to read these voltage values and the number of , and to set the number of
rotations (amount of rotation) of the bit moving motor 50 that determines the amount of
movement (amount of advance) of the driver bit 2.
When both the contact switch part 84 configured to be pushed and actuated by the
t arm 82 and the trigger switch part 90 configured to be ed by the operation of the
trigger 9 become on and a condition for starting screw fastening is ied, the bit moving
motor 50 is rotated by a set amount of rotation with the standby position P1, which is an initial
position of the driver bit 2, as a starting point, and is then stopped or reversely rotated to control
the actuation end position P2 and to adjust a fastening depth.
Further, as shown in B, the setting unit 110 may be configured such that a
setting value is ed by a . In a method using a switch that is actuated by pressing,
such as a button, for example, a method is considered in which a plurality of, in the present
e, two tact switches tary switches) are used, and the number of rotations
(amount of on) of the bit moving motor 50 is set according to the pressed switch.
According to this method, once the power supply of the tool body is cut off, the previous setting
value becomes unclear when the power supply is turned on next time. Therefore, it is also
considered to store the setting value by using a storage element such as an EEPROM.
The setting unit 110 may also be a lever-type switch or a touch panel. In addition,
the setting unit 110 may be a combination of a plurality of setting means, and may be, for
example, a combination of the dial method and the switch method described above. In this
case, a fastening amount may be adjusted by a dial operation, and the ing amount may be
set deep by operating the switch when oblique striking such as ary corner striking is
required.
Further, the setting unit 110 may have a configuration of ying a selected setting
value by a method of indicating a current value with a label, a stamp or the like, a method of
indicating a current value with an LED or the like, or the like so that the operator can easily
ve the t setting value. Note that, in order to prevent ous determination of
the setting due to noise or the like, a setting signal may be detected only when the bit moving
motor 50 is stopped. In addition, since it is also considered that the potentiometer will show
an abnormal voltage outside a normal ing range due to a failure, it is also considered not
to adopt an abnormal value, or to notify the operator that the failure has occurred by using an
LED, a buzzer or the like.
In a configuration where the amount of advance of the driver bit 2 is adjusted by a
mechanical configuration such as moving a position of a stopper, a setting unit for moving the
position of the stopper may be provided near the nose unit 8. In contrast, according to the
fastening tool 1 of the t ment, the amount of rotation of the bit moving motor 50
can be controlled to ically control the amount of movement (amount of advance) of the
driver bit 2. For this reason, there are few restrictions on the position where the setting unit
110 is provided. Therefore, in the examples of FIGS. 10A and 10B, the setting unit 110 is
provided on one side of the battery attaching part 13 provided at the lower part of the handle
11. Note that, when the handle 11 is gripped with a right hand, the setting unit 110 is operated
by a left hand. Therefore, the setting unit 110 may be provided on the left side of the battery
attaching part 13.
is a plan view g an example of a setting unit. The setting unit 110
shown in is provided to the fastening tool 1 shown in B, and has a button 110a
for selecting a setting value for gradually reducing the amount of advance of the driver bit 2
and a button 110b for selecting a setting value for gradually increasing the amount of advance
of the driver bit 2.
In addition, the setting unit 110 es a guide diagram 110a1 so that the g
value selected by an operation on the button 110a can be visually recognized. The guide
diagram 110a1 may be provided on the button 110a or may be provided near the button 110a.
Similarly, the setting unit 110 includes a guide diagram 110b1 so that the setting value selected
by an operation on the button 110b can be ly recognized. The guide diagram 110b1 may
be ed on the button 110b or may be provided near the button 110b.
[0091] Further, the setting unit 110 includes a lamp 110c configured to display a selected
setting value. The lamp 110c is an example of the display unit, and is configured to display a
selected setting value by a number of lightings of a plurality of lamps 110c. For example,
when reducing the amount of advance of the driver bit 2, the number of the lamps 110c to be
turned on is reduced, and when increasing the amount of advance of the driver bit 2, the number
of lamps 110c to be turned on is increased. Further, the change may be made according to the
color of the lamp 110c and the setting value.
In order to set the amount of movement (amount of advance) of the driver bit 2, the
contact switch part 84 or the trigger switch part 90 may be used as the setting means, in addition
to the method of ing the dedicated setting means. In a method using the existing
operating means such as the contact switch part 84 and the trigger switch part 90 as the setting
means, a predetermined setting ion different from the operation of executing a usual
fastening operation is performed for the contact arm 82 and the trigger 9, so that the number of
rotations (amount of on) of the bit moving motor 50 can be set. For example, when a
continuous operation of pulling and ing the trigger 9 is med a predetermined
number of times within a ermined time without actuating the contact arm 82, it is
determined that the operation is a setting operation of setting the number of rotations (amount
of rotation) of the bit moving motor 50. Specifically, it is ered to adjust a fastening
depth stepwise each time a predetermined operation is repeated such as quickly operating only
the trigger 9 three times.
In the method using the existing operating means such as the contact switch part 84
and the trigger switch part 90 as the setting means, another operation means and setting means
for adjusting the fastening amount are not ed, so that the tool body can be downsized and
the cost can be reduced.
is a flowchart showing an operation e of the fastening tool according
to a modified embodiment of the present embodiment. Subsequently, an operation of setting
an amount of advance of the driver bit 2 and performing fastening is described with reference
to each drawing.
[0095] In step SA1 of , the control unit 100 sets an amount of rotation of the bit moving
motor 50 that defines an amount of e of the driver bit 2, based on a setting value selected
by the setting unit 110. When the t member 81 is pressed against the fastening target,
the contact switch part 84 is pushed by the contact arm 82, the contact switch part 84 becomes
on in step SA2, the trigger 9 is operated and the trigger switch part 90 becomes on in step SA3,
the control unit 100 drives the bit moving motor 50 of the second drive unit 5 in step SA4 and
also drives the bit rotating motor 40 of the first drive unit 4 in step SA5.
When the bit moving motor 50 is driven and rotates in the positive direction, which is
one direction, the moving member 32 ted to the pulley 52 by the wire 54 and the holding
member 30 connected to the moving member 32 move forward along the axis direction of the
driver bit 2, along the rotation guide member 31.
Thereby, the driver bit 2 held by the holding member 30 moves forward, engages with
the screw 200 supplied to the ejection port 80 of the nose unit 8, moves the screw 200 forward
and s the same against the fastening target.
In addition, when the bit rotating motor 40 is driven and s in the positive
direction, which is one direction, the holding member 30 rotates together with the rotation guide
member 31.
Thereby, the driver bit 2 held by the holding member 30 rotates the screw 200 in the
positive direction (clockwise direction) and screws the same into the fastening target. The
control unit 100 moves forward the driver bit 2 by the first drive unit 4 to make the driver bit 2
to follow the screw to be screwed into the fastening target, based on a load applied to the bit
rotating motor 40, the number of rotations of the bit rotating motor 40, a load d to the bit
moving motor 50, the number of ons of the bit moving motor 50, and the like, in
conjunction with the operation of rotating the driver bit 2 by the first drive unit 4 to screw the
screw into the fastening target.
When the amount of rotation of the bit moving motor 50 becomes the setting value
selected by the setting unit 110 in step SA6 and the tip end of the driver bit 2 reaches the set
actuation end position P2, the control unit 100 stops the drive of the bit rotating motor 40 in
step SA7 and reversely rotates the bit moving motor 50 in step SA8.
When the bit moving motor 50 rotates in the opposite direction, which is the other
direction, the wire 54 is pulled out from the pulley 52, so that the moving member 32 is pushed
rearward by the urging member 33 and the moving member 32 and the holding member 30
connected to the moving member 32 move rearward along the axis direction of the driver bit 2,
along the rotation guide member 31.
When the bit moving motor 50 reversely s to the initial position in step SA9
where the wire 54 is pulled out from the pulley 52 by a ermined amount, the control unit
100 stops the reverse rotation of the bit moving motor 50 in step SA10.
Thereby, the driver bit 2 held by the holding member 30 moves rd, and the tip
end of the driver bit 2 returns to the standby on P1.
In the fastening tool 1, the amount of movement (amount of advance) of the driver bit
2 can be controlled by controlling the amount of rotation of the bit moving motor 50. Thereby,
as compared to a uration where the amount of advance of the driver bit 2 can be adjusted
by a mechanical configuration such as moving the position of the stopper, the tip end position
of the driver bit 2 can be adjusted with high accuracy with a simple configuration. Therefore,
the head portion 201 of the screw 200 is ted from floating from the fastening target 202
as shown in B or g too much into the fastening target 202 as shown in C,
so that the so-called flush state can be achieved, as shown in A, and the finish after the
fastening operation is neat.
FIGS. 15A to 15D are perspective views showing modified embodiments of the
lation position of the setting unit. As described above, according to the fastening tool 1
of the present embodiment, the amount of rotation of the bit moving motor 50 can be controlled
to electrically control the amount of movement (amount of advance) of the driver bit 2.
Therefore, there are few restrictions on the position where the g unit 110 is provided.
Therefore, in A, the setting unit 110 is provided on an upper portion of the
battery attaching part 13 provided at the lower part of the handle 11. In addition, in B,
the setting unit 110 is provided at a rear portion of the battery ing part 13. By providing
the setting unit 110 near the center in the right and left direction at the upper or rear portion of
the battery attaching part 13, the g unit 110 can be operated regardless of the dominant
hand gripping the handle 11.
Further, the setting unit 110 may be provided on the tool body 10-side, and in C, the setting unit 110 is provided on a side of the tool body 10. When the handle 11 is
gripped with a right hand, the setting unit 110 is operated by a left hand. Therefore, the g
unit 110 may be provided on the left side of the tool body 10.
Further, in D, the setting unit 110 is provided at a rear portion of the tool body
, in the present e, at a rear n of the cover part 43 that covers the first drive unit
4. By providing the setting unit 110 near the center in the right and left direction at the rear
portion of the tool body 10, the g unit 110 can be operated regardless of the dominant hand
gripping the handle 11. Note that, the setting unit 110 may also be provided on an upper
portion of the tool body 10.
In this way, since the amount of movement of the driver bit 2 along the axis direction
can be set by an electric signal, there are few restrictions on the arrangement of the setting unit
110, and the optimization can be easily made, considering the operability of the fastening depth
ment.
<Additional Notes>
This application discloses at least the following inventions (1) to (11).
(1) A fastening tool includes: a bit g unit configured to hold a driver bit so as to
be ble and to be e in an axis direction; and a motor configured to move the driver
bit held by the bit holding unit along the axis direction in which a screw engaged with the driver
bit is pressed against a fastening target.
[0112] In the present invention, the screw engaged with the driver bit is pressed against the
fastening target by a drive force of a motor that is electrically driven.
(2) The fastening tool according to (1), where the motor is a second motor, and
the fastening tool further includes a first motor. The fastening tool further includes: a first
drive unit having the first motor configured to rotate the driver bit held by the bit holding unit;
and a second drive unit having the second motor configured to move the driver bit held by the
bit holding unit along the axis direction.
In the present invention, the first drive unit configured to rotate the driver bit and the
second drive unit configured to move the driver bit in a front and rear direction along the axis
direction are driven by ndent motors.
[0115] (3) The fastening tool according to (2), includes: a tool body extending in one direction,
and a handle extending in another direction intersecting with the extension direction of the tool
body. The first drive unit is provided on one side along the extension direction of the tool
body with the handle interposed etween. The second drive unit is provided on other
side along the extension direction of the tool body with the handle interposed etween.
[0116] (4) The fastening tool according to (2) or (3), where the first motor of the first drive
unit is arranged coaxially with the driver bit held by the bit holding unit.
(5) The fastening tool according to (2) to (4), includes a transmission member
configured to move the bit holding unit in a direction in which a screw engaged with the driver
bit is pressed against a fastening target by a drive force of the second motor.
[0118] (6) The ing tool according to (2) to (5), where a shaft of the second motor of the
second drive unit is arranged along the extension direction of the handle.
(7) The fastening tool according to (2) to (6), where the second drive unit is configured
such that a drive force of the second motor is transmitted to the bit holding unit by a pulley
configured to be driven and to rotate by the second motor and a wire to be wound on the .
[0120] (8) The fastening tool according to (1), includes a battery ing part to which a
battery configured to supply electricity to the motor is attached.
(9) The fastening tool according to (2) to (7), includes a battery attaching part to which
a battery ured to supply electricity to the first motor and the second motor is attached.
(10) The fastening tool according to (2), where the bit holding unit and the first drive
unit are ured to be detachably attached to the tool body in a state where each component
is assembled.
(11) The fastening tool according to (7), where the second motor is offset to one side
with respect to an axis of the driver bit so that a tangential direction of a portion of the pulley
where the wire is wound ches the axis of the driver bit held by the bit holding unit.
In the present invention, since the screw engaged with the driver bit is pressed against
the fastening target by a drive force of the motor, it is possible to easily adjust excess or
deficiency in force for pressing the screw against the fastening target, and to press the screw
against the fastening target with an appropriate force.
In addition, in the present invention, as compared to a configuration where two
operations are med by a single drive source, a drive force transmission mechanism, a
mechanism for causing the drive force to be transmitted at a predetermined timing, and the like
are unnecessary, so that the configuration can be simplified. In addition, the configuration can
be fied, so that a weight can be reduced. Further, the interlocking of two operations can
be performed by control.
Claims (11)
1. A fastening tool comprising: a bit holding unit configured to hold a driver bit so as to be rotatable and to be movable 5 in an axis direction; and a motor configured to move the driver bit held by the bit holding unit along the axis direction in which a screw engaged with the driver bit is pressed t a ing target.
2. The fastening tool according to claim 1, 10 n the motor is a second motor, and the fastening tool further includes a first motor, wherein the fastening tool further comprises: a first drive unit having the first motor configured to rotate the driver bit held by the bit holding unit; and 15 a second drive unit having the second motor configured to move the driver bit held by the bit holding unit along the axis direction.
3. The fastening tool according to claim 2, comprising: a tool body extending in one direction, and 20 a handle extending in another direction intersecting with the extension direction of the tool body, wherein the first drive unit is provided on one side along the extension direction of the tool body with the handle interposed therebetween, and wherein the second drive unit is provided on other side along the extension direction 25 of the tool body with the handle interposed therebetween.
4. The fastening tool according to claim 2 or 3, wherein the first motor of the first drive unit is ed lly with the driver bit held by the bit holding unit. 30
5. The ing tool according to any one of Claims 2 to 4, sing a transmission member configured to move the bit holding unit in a direction in which a screw engaged with the driver bit is pressed against a fastening target by a drive force of the second motor.
6. The fastening tool according to any one of Claims 2 to 5, wherein a shaft of the second motor of the second drive unit is ed along the extension direction of the handle.
7. The fastening tool according to any one of Claims 2 to 6, wherein the second drive unit is configured such that a drive force of the second motor is transmitted to the bit holding unit by a pulley configured to be driven and to rotate by the second motor and a wire to be wound on the pulley.
8. The fastening tool according to claim 1, comprising a battery attaching part to which a battery configured to supply electricity to the motor is attached.
9. The fastening tool according to any one of Claims 2 to 7, comprising a battery 15 attaching part to which a battery configured to supply electricity to the first motor and the second motor is attached.
10. The fastening tool according to claim 2, wherein the bit holding unit and the first drive unit are configured to be ably attached to the tool body in a state where each 20 component is led.
11. The fastening tool according to claim 7, wherein the second motor is offset to one side with respect to an axis of the driver bit so that a tangential ion of a portion of the pulley where the wire is wound approaches the axis of the driver bit held by the bit holding 25 unit.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-034725 | 2021-03-04 | ||
JP2021-034722 | 2021-03-04 | ||
JP2021-034724 | 2021-03-04 | ||
JP2021-034723 | 2021-03-04 | ||
JP2021-149654 | 2021-09-14 | ||
JP2021-149653 | 2021-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ785832A true NZ785832A (en) | 2022-03-25 |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7490467B2 (en) | Fastening Tools | |
EP4052849A1 (en) | Fastening tool | |
JP7490466B2 (en) | Fastening Tools | |
JP2006026858A (en) | Fastener driving machine | |
NZ785832A (en) | Fastening tool | |
NZ785841A (en) | Fastening tool | |
JP2022135117A (en) | fastening tool | |
JP2022135118A (en) | fastening tool | |
JP2022135116A (en) | fastening tool | |
JP2022135119A (en) | fastening tool | |
JP7099138B2 (en) | Driving machine | |
US20230083556A1 (en) | Fastening tool | |
US20230330820A1 (en) | Fastening tool | |
JP2021088056A (en) | Driving machine | |
NZ785849A (en) | Fastening tool |