Air-tight switching device for use in a pneumatic tool
AssigneeBasso Industry Corp.
InventorsSan-Yih Su, Da-Jay Lin
Life of this patent
Estimating the term…
Abstract
A switching device for a pneumatic tool includes a valve member, a connecting member and an operating unit. The valve member is rotatable relative to the pneumatic tool between first and second positions. The connecting member is coupled to the valve member in a manner such that the connecting member drives the rotation of the valve member and that an assembly of the valve member and the connecting member is flexible, so as to establish an air-tight seal between the valve member and a pneumatic motor of the pneumatic tool. The operating unit is mounted on the pneumatic tool and coupled co-rotatably to the connecting member.
Claims8
A switching device adapted for use in a pneumatic tool, the pneumatic tool including a tool body and a pneumatic motor, the tool body including a handle portion that extends along an X axis, and a head portion that is connected to an end of the handle portion, the handle portion having an inlet flow path that extends along the X axis and that is formed through an opposite end of the handle portion for permitting compressed air to flow thereinto, the pneumatic motor being disposed in the head portion, and including a cylinder that defines an air chamber, and first and second flow channels communicating fluidly with the air chamber, and a rotor that is disposed rotatably in the air chamber, said switching device comprising:
- a valve member adapted to be disposed in the handle portion, being in contact with the cylinder, and defining an intermediate flow path therethrough, said valve member being rotatable relative to the tool body between a first position where said intermediate flow path communicates fluidly the inlet flow path and the first flow channel, and a second position where said intermediate flow path communicates fluidly the inlet flow path and the second flow channel, such that the rotor is rotatable in two opposite directions;
- a connecting member adapted to be disposed in the handle portion, and coupled to an end of said valve member opposite to the pneumatic motor along the X axis in a manner such that said connecting member drives the rotation of said valve member between the first and second positions and that an assembly of said valve member and said connecting member is flexible, so as to establish an air-tight seal between said valve member and the pneumatic motor;
- an operating unit adapted to be mounted operably on the handle portion and coupled co-rotatably to said connecting member;
- and
- a resilient member having opposite ends abutting respectively against said valve member and said connecting member for biasing resiliently said valve member to contact the pneumatic motor.
A switching device adapted for use in a pneumatic tool, the pneumatic tool including a tool body and a pneumatic motor, the tool body including a handle portion that extends along an X axis, and a head portion that is connected to an end of the handle portion, the handle portion having an inlet flow path that extends along the X axis and that is formed through an opposite end of the handle portion for permitting compressed air to flow thereinto, the pneumatic motor being disposed in the head portion, and including a cylinder that defines an air chamber, and first and second flow channels communicating fluidly with the air chamber, and a rotor that is disposed rotatably in the air chamber, said switching device comprising:
- a valve member adapted to be disposed in the handle portion, being in contact with the cylinder, and defining an intermediate flow path therethrough, said valve member being rotatable relative to the tool body between a first position where said intermediate flow path communicates fluidly the inlet flow path and the first flow channel, and a second position where said intermediate flow path communicates fluidly the inlet flow path and the second flow channel, such that the rotor is rotatable in two opposite directions;
- a connecting member adapted to be disposed in the handle portion, and coupled to an end of said valve member opposite to the pneumatic motor along the X axis in a manner such that said connecting member drives the rotation of said valve member between the first and second positions and that an assembly of said valve member and said connecting member is flexible, so as to establish an air-tight seal between said valve member and the pneumatic motor;
- an operating unit adapted to be mounted operably on the handle portion and coupled co-rotatably to said connecting member;
- wherein said valve member further has a transmission structure provided at said end thereof opposite to the pneumatic motor, said connecting member having a transmission structure that is coupled to said transmission structure of said valve member, such that rotation is transmitted from said connecting member to said valve member;
- and
- wherein said transmission structure of said valve member is configured to be tubular, said transmission structure of said connecting member being configured as a flexible sleeve that permits said transmission structure of said valve member to be press fitted thereinto for allowing rotation transmission between said valve member and said connecting member.
Dependencies are inferred from the claim text.