A pneumatic tool which can be easily assembled. This pneumatic tool includes a tool housing and an air supply pipe. The tool housing includes a motor housing having a tubular wall, and a tubular air supply/exhaust portion connected to the side surface of the tubular wall and extending rearwardly of
A pneumatic tool which can be easily assembled. This pneumatic tool includes a tool housing and an air supply pipe. The tool housing includes a motor housing having a tubular wall, and a tubular air supply/exhaust portion connected to the side surface of the tubular wall and extending rearwardly of the pneumatic tool. The air supply pipe has a valve unit, and is inserted into and set in the air supply/exhaust portion. The air supply/exhaust portion has an air supply passage extending from the motor housing. When the air supply pipe is inserted into and fixed to the air supply/exhaust portion, the forward end portion of the air supply pipe is communicated with a rear end opening of the air supply passage of the air supply/exhaust portion, whereby a compressed air supply passage to an air motor is formed.
대표청구항▼
1. A pneumatic tool comprising: a tool housing including a motor housing for housing an air motor, and a tubular air supply/exhaust portion having a forward end connected to a rear side wall of the motor housing, a rear end, and a longitudinal passage extending rearward from the forward end through
1. A pneumatic tool comprising: a tool housing including a motor housing for housing an air motor, and a tubular air supply/exhaust portion having a forward end connected to a rear side wall of the motor housing, a rear end, and a longitudinal passage extending rearward from the forward end through the supply/exhaust portion and opening at the rear end, the tool housing further including an air inlet and an air outlet for the air motor, which extends through the rear side wall of the motor housing, and an air supply tubular portion provided inside the forward end of the air supply/exhaust portion, the air supply tubular portion having an air supply passage that has a forward end fluidly communicating with the air inlet and a rear end positioned in the longitudinal passage and directed toward the rear end of the air supply/exhaust portion, the air outlet enabling the air motor to fluidly communicate with the longitudinal passage of the air supply/exhaust portion; andan air supply pipe having a rear air inlet end configured to be connected to a compressed air source, a forward air outlet end fluidly connected to the rear end of the air supply tubular portion and an air passage (42) extending through the air supply pipe from the rear air inlet end to the forward air outlet end, the air supply pipe further including a valve unit for controlling compressed air flowing through the air passage of the air supply pipe, wherein the air supply pipe is configured to be inserted into the longitudinal passage of the air supply/exhaust portion from the rear end thereof with the forward air outlet end directed forward so that the air supply pipe is fixed in the air supply/exhaust portion with the forward air outlet end fluidly connected to the rear end of the air supply tubular portion to define a compressed air supply passage extending from the rear air inlet end of the air supply pipe to the air inlet for the air motor through the air passage, and to define an air exhaust passage extending rearward from the air outlet for the air motor through a space between an interior peripheral surface of the air supply/exhaust portion and an outer peripheral surface of the air supply pipe;wherein the air supply pipe has a plate-shaped lid member around an outer peripheral surface of the rear air inlet end thereof;the lid member is configured to be engaged with the rear end of the air supply/exhaust portion to positively locate the air supply pipe relative to the air supply/exhaust portion;the forward air outlet end of the air supply pipe has an annular flange thereon and there around, and an O-ring disposed there around, the O-ring being positioned forward of and adjacent to the annular flange;the air supply tubular portion is configured to receive the forward air outlet end portion of the air supply pipe; andthe rear end of the air supply passage has a large-diameter portion which, when the rear end of the air supply passage receives the forward air inlet end of the air supply pipe, receives the O-ring disposed around the forward air outlet end to sealingly engage with the O-ring. 2. A pneumatic tool according to claim 1, wherein the lid member has an inner surface which, when the lid member is engaged with the rear end of the air supply/exhaust portion, faces the longitudinal passage of the air inlet/exhaust portion, an outer surface opposite to the inner surface, a hole extending through the lid member from the inner surface to the outer surface, and an exhaust pipe attached to the outer surface of the lid member and communicated through the hole with the longitudinal passage of the air inlet/exhaust portion. 3. A pneumatic tool according to claim 1, wherein an outer peripheral surface of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion so that the air supply pipe is positively located relative to the air supply/exhaust portion. 4. A pneumatic tool according to claim 3, wherein the air supply pipe has at least one reinforcing rib longitudinally extending along the air supply pipe, and wherein when the air supply pipe is inserted into the air supply/exhaust portion, the reinforcing rib of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion. 5. A pneumatic tool according to claim 1, wherein an outer peripheral surface of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion so that the air supply pipe is positively located relative to the air supply/exhaust portion. 6. A pneumatic tool according to claim 2, wherein an outer peripheral surface of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion so that the air supply pipe is positively located relative to the air supply/exhaust portion. 7. A pneumatic tool according to claim 5, wherein the air supply pipe has at least one reinforcing rib longitudinally extending along the air supply pipe, and wherein when the air supply pipe is inserted into the air supply/exhaust portion, the reinforcing rib of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion. 8. A pneumatic tool according to claim 6, wherein the air supply pipe has at least one reinforcing rib longitudinally extending along the air supply pipe, and wherein when the air supply pipe is inserted into the air supply/exhaust portion, the reinforcing rib of the air supply pipe engages with the interior peripheral surface of the air supply/exhaust portion.
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이 특허에 인용된 특허 (16)
Smolinski Gerald J. ; Landree Dale R., Air ratchet hand tool with thermoplastic jacket.
Teague ; Jr. Walter D. (Tweed Blvd. Nyack NY 10960) Sempliner Arthur T. (37-04 Van Nostrand Pl. Douglaston NE 11363), Fluid line and connection for fluid-driven appliance.
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