Double-force type pressure cylinder structure
OwnerWang Wing Foninventor
Life of this patent
Estimating the term…
Abstract
A double-force type pressure cylinder structure includes a gas cylinder secured on a pressurizing cylinder base, and a top cap secured on the gas cylinder. The pressurizing cylinder base has a liquid inlet port forming a first check valve, a liquid outlet port forming a second check valve, and a pressurizing cylinder chamber for receiving a piston rod. The gas cylinder includes a piston, a spring biased between the piston and an end face of the pressurizing cylinder base so that the piston is pushed upward by the spring. The circuit of the compressed air is controlled by air holes in conjunction with the spring so that the piston and the piston rod are reciprocally moved quickly for compressing the hydraulic oil at a high speed, thereby forming a thrust with a high pressure.
Claims9
A double-force type pressure cylinder-structure comprising:
- a pressurizing cylinder base (10) defining a radial through hole (11) having a first side threadedly provided with a liquid inlet port (12) having a distal end for receiving a first ball (13), thereby forming a first check valve, and having a second side threadedly provided with a liquid outlet port (14) having a distal end for receiving a second ball (15), thereby forming a second check valve, said pressure cylinder base (10) having a central portion defining a pressurizing cylinder chamber (16) for receiving a piston rod (23), said pressurizing cylinder chamber (16) having a top defining a screw hole (17) for receiving a sealing bushing (18), a support bushing (19) screwed into said screw hole (17) for securing said sealing bushing (18) and for supporting said piston rod (23) which is sealed by said sealing bushing (18);
- a gas cylinder (20) secured on said pressurizing cylinder base (10) and containing a piston (21) therein, said piston (21) having a bottom defining an inner annular hole (211) for receiving a flange disk (22), said flange disk (22) having a central portion screwed on one end of said piston rod (23), a spring (24) having a first end secured on said flange disk (22) and a second end secured on an end face of said pressurizing cylinder base (10) so that said piston (21) is pushed upward by said spring (24), a main air drain hole (25) longitudinally defined in a wall of said gas cylinder (20) and extending into a bottom of said gas cylinder (20), a direction change air drain hole (26) longitudinally defined in said wall of said gas cylinder (20) and extending into a mediate portion of said gas cylinder (20);
- and
- a top cap (30) secured on said gas cylinder (20) by bolts (31) and having a central portion defining a through stepped hole (32), said stepped hole (32) provided with an inner flange (33), said inner flange (33) having a bottom for receiving a lower piston base (34) and a top for receiving an upper piston base (35) which is screwed by bolts (36), said upper piston base (35) defining an inner cylinder chamber (351), said lower piston base (34) having an upper portion defining a concave annular hole (343) for receiving an upper valve plug (37) and a lower valve plug (38), and having a lower portion for receiving a spline (391) which defines a plurality of radially arranged slots (3911), an O-ring (392) mounted on a distal end of said spline (391), a direction change piston (393) slidably mounted in said inner cylinder chamber (351) of said upper piston base (35) and having an axle extending into said upper valve plug (37) and abutting an end face of said spline (391), a threaded post (394) extending through a block ring (395), through said spline (391) and screwed into said axle of said direction change piston (393) so that said spline (391) is integrally coupled with said direction change piston (393) while said block ring (395) closes said slots (3911) of said spline (391).
Dependencies are inferred from the claim text.