Driving device

Patent metadata

Field	Value
Publication number	US-2023025226-A1
Application number	US-202017780348-A
Country	US
Kind code	A1
Filing date	Oct 30, 2020
Priority date	Nov 28, 2019
Publication date	Jan 26, 2023
Grant date	—

Abstract

Realized is a driving device capable of controlling driving timing of a blade and driving timing of a feeder independently. The driving device of the present invention has a housing having an injection path, a blade hitting a nail supplied to the injection path, an electric motor, a controller controlling drive of the electric motor, a magazine accommodating connected nails, and a supply, mechanism sequentially supplying the connected nails, which are accommodated in the magazine, to the injection path. The supply mechanism has a reciprocable feeder backward and forward, an energizing member energizing the feeder forward, and a stopper holding a position of the backward moved feeder against energization of the energizing member. Then, holding the position of the feeder by the stopper is released based on control of the controller.

First claim

1 . A driving device comprising:
a housing having a nose portion that forms an injection path; a blade hitting a fastener that is supplied to the injection path; an electric motor powered by a battery mounted in the housing; a control circuit controlling drive of the electric motor; a magazine accommodating connected fasteners wound in a roll shape; and a supply mechanism sequentially supplying the connected fasteners, which is accommodated in the magazine, to the injection path, wherein the supply mechanism includes:
a feeder capable of reciprocating in a first direction approaching the injection path and a second direction away from the injection path;
an energizing mechanism for energizing the feeder in the first direction; and
a stopper holding a position of the feeder against energization of the energizing mechanism,
wherein the feeder operates in the second direction by drive of the electric motor, and a position of the feeder that has operated in the second direction is held by the stopper, and wherein when the holding of the position of the feeder by the stopper is released based on control of the control circuit, the feeder operates in the first direction by the energizing mechanism.

2 . The driving device according to claim 1 , further comprising:
a rotating body rotated and driven by the electric motor; a pressing roller that brings the blade into pressure contact with the rotating body; and a spring that energizes the blade, wherein the blade is driven in a driving direction against energization of the spring when the blade is brought into pressure contact with the rotating body by the pressing roller, and the blade is driven in a counter-driving direction by the energization of the spring when bringing the blade into pressure contact with the rotating body by the pressing roller is released.

3 . The driving device according claim 1 , further comprising:
a rotating body rotated and driven by the electric motor; a plurality of first engaging portions provided on the rotating body; a plurality of second engaging portions provided on the blade; and a spring energizing the blade in a driving direction, wherein when the rotating body rotates, the first engaging portions and the second engaging portions are sequentially engaged with one another and the blade is driven in a counter-driving direction against energization of the spring, and when engagement between the first engaging portions and the second engaging portions is released, the blade is driven in the driving direction by the energization of the spring.

4 . The driving device according to claim 2 , further comprising a power mechanism giving the feeder a driving force that moves the feeder in the second direction,
wherein the power mechanism includes a movable member displaceable between an operating position and a standby position, when the movable member is displaced to the operating position, a rotational force of the rotating body is transmitted to the feeder and the feeder moves in the second direction against energization of the energizing mechanism, and when the movable member is displaced to the standby position, engagement between the movable member and the stopper is released and the rotational force of the rotating body is not transmitted to the feeder and the feeder moves in the first direction due to the energization of the energizing mechanism.

5 . The driving device according to claim 4 ,
wherein the power mechanism includes: an actuator that displaces the movable member between the operating position and the standby position; a first roller that abuts on the feeder; and a second roller that, with displacement of the movable member to the operating position, abuts on both of the rotating body and the first roller and transmits the rotational force of the rotating body to the first roller.

6 . The driving device according to claim 5 ,
wherein the actuator is a solenoid actuator that linearly moves the movable member.

7 . The driving device according to claim 5 ,
wherein the actuator is a second electric motor that rotates the movable member.

8 . The driving device according to claim 5 , further comprising a fan or fin that rotates with rotation of the rotating body and generates cooling air for cooling the actuator.

9 . The driving device according to claim 1 , further comprising a gas chamber that is filled with gas,
wherein the blade is movable in a driving direction of and in a counter-driving direction opposite to the driving direction, the electric motor increases pressure in the gas chamber by operating the blade in the counter-driving direction against the pressure in the gas chamber, and the feeder operates in the first direction due to the pressure in the gas chamber.

10 . The driving device according to claim 9 ,
wherein the feeder operates in the first direction when the blade is operated in the counter-driving direction and the pressure in the gas chamber is increased.

11 . The driving device according to claim 9 ,
wherein the stopper is engaged and disengaged with and from the feeder, the feeder is prevented operating in the first direction when the stopper is engaged, and the feeder is operable in the first direction when the stopper is released.

12 . The driving device according to claim 11 ,
wherein the feeder has a protrusion portion that protrudes in a direction intersecting with the first direction,
the stopper is operable in a direction intersecting with the first direction, and
an operating position of the stopper includes:
a first position where the stopper is engaged with the protrusion portion; and
a second position where the stopper is disengaged from the protrusion portion.

13 . The driving device according to claim 12 , further comprising a second actuator that operates the stopper from the first position to the second position.

14 . The driving device according to claim 13 , further comprising a first energizing portion that applies an energizing force in the second direction to the feeder,
wherein the feeder supplies the fastener to the nose portion against an energizing force of the first energizing portion when the stopper is operated to the second position.

15 . The driving device according to claim 14 , further comprising a second energizing portion applying, to the stopper, an energizing force for operating the stopper from the second position to the first position,
wherein the second actuator operates the stopper from the first position to the second position against a force of the second energizing portion when power is supplied, the feeder is operable in the first direction in states where the stopper is operated in the second position and suppling the power to the second actuator is cut off and the stopper contacts with the feeder, and the feeder moving in the first direction is prevented when supplying the power to the actuator is stopped and the stopper is operated to the first position.

16 . The driving device according to claim 1 , further comprising a solenoid actuator that is powered by the battery and is operated by the control circuit,
wherein the holding of the stopper is released by the solenoid actuator.

17 . The driving device according to claim 16 ,
wherein the control circuit operates the solenoid actuator to release the stopper before the blade starts moving in the driving direction, thereby moving the feeder in the first direction to supply the fastener to the injection path.

18 . The driving device according to cla

Assignees

• Koki Holdings Co Ltd

Inventors

• Aizawa sotaro
• Ootsuka Kazuhiro
• Komazaki Yoshiichi

Classifications

• B25C1/04

  operated by fluid pressure {, e.g. by air pressure} · CPC title

• B25C1/06 Primary

  operated by electric power · CPC title

• B25C1/001

  Nail feeding devices (B25C1/184 takes precedence) · CPC title

• B25C1/047

  Mechanical details · CPC title