Pneumatic tool

Patent metadata

Field	Value
Publication number	US-11400575-B2
Application number	US-202016797563-A
Country	US
Kind code	B2
Filing date	Feb 21, 2020
Priority date	Feb 22, 2019
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

A pneumatic tool includes a drive mechanism configured to be actuated by a pneumatic pressure of compressed air, a body housing having the drive mechanism embedded therein, a grip housing connected to the body housing, and an electromagnetic valve configured to control supply of the compressed air to the drive mechanism, wherein the electromagnetic valve is arranged on an opposite side to the body housing, as seen in an extension direction of the grip housing.

First claim

The invention claimed is:

1. A pneumatic tool comprising:
a drive mechanism including a piston configured to be actuated by a pneumatic pressure of compressed air, the piston configured to eject a striking target upon actuation by the pneumatic pressure of compressed air;
a body housing having the drive mechanism embedded therein;
a grip housing connected to the body housing, the grip housing including a first end and a second end that are opposite to each other along a longitudinal direction of the grip housing;
an electromagnetic valve configured to control supply of the compressed air to the drive mechanism; and
a valve stem configured to be actuated by the electromagnetic valve and extending in the longitudinal direction from the first end to an air switching part arranged closer to the second end of the grip housing than the first end of the grip housing along the longitudinal direction,
wherein upon actuation of the electromagnetic valve, the valve stem moves in the longitudinal direction of the grip housing to move the air switching part,
wherein the electromagnetic valve is arranged on the first end of the grip housing and the drive mechanism is arranged on the second end of the grip housing, and
wherein, upon actuation by the pneumatic pressure of the compressed air, the piston of the drive mechanism is configured to move in a direction substantially perpendicular to an axis that is arranged along the longitudinal direction of the grip housing.

2. The pneumatic tool according to claim 1 , wherein the electromagnetic valve is insertable into the first end of the grip housing.

3. The pneumatic tool according to claim 1 , further comprising a switch for the electromagnetic valve, configured to switch opened and closed states of the electromagnetic valve,
wherein the switch for the electromagnetic valve is arranged on the first end side of the grip housing.

4. The pneumatic tool according to claim 3 , further comprising a control substrate configured to control an actuation of the electromagnetic valve, wherein the switch for the electromagnetic valve is connected to a power supply terminal of the control substrate without electrical wiring.

5. The pneumatic tool according to claim 1 , further comprising a control substrate configured to control an actuation of the electromagnetic valve,
wherein the control substrate is arranged on the first end of the grip housing.

6. The pneumatic tool according to claim 1 , wherein a moving direction of a movable iron core of the electromagnetic valve is arranged so as to be different from an occurrence direction of impact that is generated when the drive mechanism is actuated.

7. The pneumatic tool according to claim 6 , wherein the moving direction of the movable iron core of the electromagnetic valve is along the longitudinal direction of the grip housing.

8. The pneumatic tool according to claim 1 , wherein a moving direction of a valve body of the electromagnetic valve is arranged along the axis that passes through the grip housing.

9. The pneumatic tool according to claim 1 , wherein the valve stem is configured to be actuated in conjunction with the electromagnetic valve and is arranged inside of the grip housing, and
wherein the valve stem is moved in the longitudinal direction of the grip housing, so that supply of the compressed air to the drive mechanism is executed.

10. The pneumatic tool according to claim 9 , wherein the electromagnetic valve and valve stem are detachable from the grip housing.

11. The pneumatic tool according to claim 9 ,
wherein the grip housing includes a chamber configured to hold the compressed air, and
wherein upon actuation of the electromagnetic valve, the valve stem moves in the longitudinal direction of the grip housing to move the air switching part from a standby position to an actuation position, and
wherein the air switching part in the actuation position enables supply of compressed air from the chamber to the piston of the drive mechanism.

12. The pneumatic tool according to claim 9 , wherein the electromagnetic valve and the valve stem are detachable from the first end of the grip housing, wherein upon insertion of the electromagnetic valve and the valve stem into the first end of the grip housing, the electromagnetic valve and the valve stem are inserted in the longitudinal direction of the grip housing.

13. The pneumatic tool according to claim 1 , wherein the electromagnetic valve is detachable from the grip housing.

14. The pneumatic tool according to claim 1 , wherein the electromagnetic valve is arranged on the first end of the grip housing such that the axis passes through the electromagnetic valve.

15. The pneumatic tool according to claim 1 , further comprising:
a control unit including the electromagnetic valve and a power supply terminal configured to connect to a battery,
wherein the control unit is arranged on the first end of the grip housing.

Assignees

• Max Co Ltd

Inventors

• Tanaka Hiroshi

Classifications

• B25C1/045

  main valve and main cylinder · CPC title

• B25C1/043 Primary

  Trigger valve and trigger mechanism · CPC title

• B25C1/047 Primary

  Mechanical details · CPC title

• B25C1/046

  Trigger valve and trigger mechanism · CPC title

• B25F5/021

  with guiding devices (guiding devices for hand tools on stands or supports B25H1/0078) · CPC title