Driving tool with switching mechanism

Patent metadata

Field	Value
Publication number	US-11724375-B2
Application number	US-201917257751-A
Country	US
Kind code	B2
Filing date	May 31, 2019
Priority date	Jul 6, 2018
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A driving tool having a striking unit and a driver unit includes a solenoid configured to switch between a first state and a second state by being actuated by the supply and stop of the electric power, wherein the driver unit has a first drive state in which the striking unit can be actuated and a second drive state in which the actuation of the striking unit is blocked, wherein the first state enables the driver unit to switch from the second drive state to the first drive state and the second state blocks the driver unit from switching from the second drive state to the first drive state, and wherein an actuation direction of the solenoid and the moving direction of the nail are arranged so as to intersect each other.

First claim

The invention claimed is:

1. A driving tool including a striking unit provided to be actuatable and a driver unit configured to actuate the striking unit in a direction in which the striking unit strikes a fastener, the driving tool comprising:
an ejection unit configured to guide a moving direction of the fastener struck by the striking unit; and
a switching mechanism having a first state and a second state for controlling the striking unit, actuated by a power supply to switch between the first state and the second state, and configured to maintain the first state or the second state when the power supply is stopped,
wherein the first state allows the striking unit to drive the fastener into a workpiece and the second state blocks the striking unit from driving the fastener into the workpiece, and
wherein an actuation direction of the switching mechanism and the moving direction of the fastener guided by the ejection unit are arranged so as to intersect each other.

2. The driving tool according to claim 1 , further comprising a contact member configured to come into contact with or be separated from a workpiece into which the fastener is driven,
wherein the contact member can be actuated with respect to the ejection unit, and the actuation direction of the switching mechanism and an actuation direction of the contact member are arranged so as to intersect each other.

3. The driving tool according to claim 2 ,
wherein an actuation direction of the striking unit and the actuation direction of the contact member are parallel to each other, and
wherein the actuation direction of the switching mechanism and the actuation direction of the contact member intersect each other on a plane parallel to the actuation direction of the striking unit.

4. The driving tool according to claim 2 ,
wherein the driver unit includes:
a first biasing mechanism configured to actuate the striking unit in a first direction of striking the fastener;
a second biasing mechanism configured to actuate the striking unit in a second direction opposite to the first direction;
a clutch configured to connect and disconnect a path for transmitting a biasing force of the second biasing mechanism to the striking unit; and
a control unit configured to connect and disconnect the path by actuating the clutch,
wherein the first biasing mechanism includes a pressure chamber configured to bias the striking unit in the first direction by a pressure of compressible gas,
wherein when the contact member comes into contact with the workpiece and the clutch connects the path, the striking unit is actuated in the second direction by the biasing force of the second biasing mechanism, so that a pressure of the pressure chamber increases, and
wherein when the clutch disconnects the path after the striking unit is actuated in the second direction, the striking unit is actuated in the first direction by the pressure of the pressure chamber.

5. The driving tool according to claim 1 ,
wherein the switching mechanism includes:
a coil configured to form a magnetic field when a current flows therethrough; and
an actuation member configured to be actuated by the magnetic field formed by the coil, and

wherein the actuation of the switching mechanism is the actuation of the actuation member.

6. The driving tool according to claim 1 , further comprising a detection unit configured to detect whether the number of fasteners to be supplied to the ejection unit is equal to or larger than a predetermined value or smaller than the predetermined value,
wherein the first state allows the striking unit to drive the fastener into the workpiece when the number of fasteners is equal to or larger than the predetermined value, and
wherein the second state blocks the striking unit from driving the fastener into the workpiece when the number of fasteners is smaller than the predetermined value.

7. The driving tool according to claim 1 ,
wherein the driver unit includes:
a first pressure chamber configured to accumulate compressible gas;
a second pressure chamber capable of actuating the striking unit in a first direction of striking the fastener when the compressible gas is supplied from the first pressure chamber and exhausting the compressible gas supplied from the first pressure chamber after the striking unit is actuated in the first direction; and
a valve configured to supply the compressible gas from the first pressure chamber to the second pressure chamber and exhaust the compressible gas from the second pressure chamber,

wherein the first state allows the striking unit to drive the fastener into the workpiece by supplying the compressible gas from the first pressure chamber to the second pressure chamber by the valve, and
wherein the second state blocks the striking unit from driving the fastener into the workpiece by exhausting the compressible gas from the second pressure chamber by the valve.

8. The driving tool according to claim 7 ,
wherein the valve supplies the compressible gas from the first pressure chamber to the second pressure chamber when the contact member comes into contact with the workpiece and is actuated and exhausts the compressible gas from the second chamber when the contact member is separated from the workpiece,
wherein the first state of the switching mechanism is a state which allows the contact member to come into contact with the workpiece and be actuated, and
wherein the second state of the switching mechanism is a state which blocks the contact member from coming into contact with the workpiece and being actuated.

Assignees

• Koki Holdings Co Ltd

Inventors

• Ootsuka Kazuhiro

Classifications

• B25C1/047 Primary

  Mechanical details · CPC title

• B25C1/06 Primary

  operated by electric power · CPC title