US 12,280,483 B2
Pneumatic tool
Takuma Yoshida, Tokyo (JP)
Assigned to Max Co., Ltd., Tokyo (JP)
Filed by MAX CO., LTD., Tokyo (JP)
Filed on Oct. 26, 2021, as Appl. No. 17/511,409.
Claims priority of application No. 2020-178639 (JP), filed on Oct. 26, 2020; and application No. 2021-166353 (JP), filed on Oct. 8, 2021.
Prior Publication US 2022/0126432 A1, Apr. 28, 2022
Int. Cl. B25C 1/04 (2006.01)
CPC B25C 1/047 (2013.01) [B25C 1/042 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A pneumatic tool comprising:
a drive mechanism configured to be driven by compressed air supplied from an air intake;
an air chamber configured to store the compressed air supplied to drive the drive mechanism;
a pressure adjusting mechanism configured to adjust a primary pressure of the compressed air supplied into the air chamber to a secondary pressure, the primary pressure being a pressure of the compressed air supplied from the air intake;
a first flow path that is in a primary pressure region of the pressure adjusting mechanism, the first flow path being in communication with the air intake; and
a second flow path that is in a secondary pressure region of the pressure adjusting mechanism, the second flow path being in communication with the air chamber,
wherein the pressure adjusting mechanism comprises:
a valve chamber, which is in the primary pressure region, configured to connect the first flow path and the second flow path;
a valve body provided in the valve chamber and configured to move in directions for opening and closing the valve chamber and the second flow path;
an elastic body configured to exert a first urging force to the valve body in the direction for opening the valve chamber and the second flow path;
a valve spring provided on the valve body and configured to exert a second urging force to the valve body in the direction for closing the valve chamber and the second flow path; and
a pressure receiving member configured to receive air pressure in the air chamber and exert a third urging force in a direction to close the first flow path,
wherein the elastic body is arranged at a position closer to the air intake than the valve body,
wherein the elastic body, the pressure receiving member, the valve body, and the valve spring are provided on a first axis,
wherein the elastic body is configured to press the valve body via the pressure receiving member, and
wherein a part of the first flow path extends along a second axis parallel to the first axis.