JP2002332958A - Air compressor with double pump system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air compressor including a double pump system wherein pumping operation is performed twice when an eccentric part is rotated by one cycle by a motor to increase pumping efficiency. SOLUTION: This air compressor includes two casings fixed to a base part, and each casing is provided with a slidable piston. A weight is rotatably fixed to the base part, and includes an eccentric pin rotatably connected to a piston rod to move the piston to the casing for the pumping operation. A motor is fixed to the base part, and is provided with a pinion. A gear is rotatably fixed to the base by a pivot shaft, and engaged with the pinion to be driven by the motor through the pinion. The casings are adjustably fixed to the base part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air compressor,
In particular, it relates to an air compressor having a double pump system.

[0002]

BACKGROUND OF THE INVENTION Applicants have developed various types of typical air compressors. Wen US Patent No. 52154
No. 47, Chou U.S. Pat. No. 5,655,887, and Chou
U.S. Patent No. 6,146,112 discloses three typical air compressors, which include a single piston slidably received within a housing and connected to the motor via an eccentric. The piston is operated so as to perform one pump operation when the eccentric portion is rotated by one cycle by the motor.

The present invention has been devised to reduce and / or eliminate the disadvantages of the prior art air compressors described above.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air compressor including a double pump system which performs two pump operations when an eccentric portion is rotated by a motor for one cycle to increase pump efficiency. This is the first purpose.

[0005]

SUMMARY OF THE INVENTION In one aspect of the invention,
Two housings each having a chamber formed therein, a piston slidably received in the housing chamber, and an operation of moving the piston relative to the housing to simultaneously perform reciprocating pumping operations of the piston. Means, wherein the pistons each have a rod extending from the piston.

A pin rotatably connected to the rod of the piston is further provided, the actuation means being provided for rotating the pin in a reciprocating motion, including a motor having a spindle, the pin being eccentrically fixed to the spindle. .

A base is further provided for supporting and securing the housing. The operating means includes a weight rotatably secured to the base by a pivot axis, wherein the pin extends from the weight and is eccentric relative to the pivot axis.

[0008] The operating means further includes a pinion provided on the motor, and a gear rotatably fixed to the base by a pivot shaft, engaged with the pinion, and driven by the motor via the pinion. The gear includes a peripheral wall extending therefrom to receive the weight therein and allow the weight and the gear to rotate simultaneously.

An apparatus is further provided for adjustably securing the housing to the base. The base includes two ends and the means for adjustably securing includes at least one extension extending from each housing and adjustably secured to the base. The end of the base
A plurality of holes are respectively included therein for selectively aligning with the extension of the housing.

[0010] A first hose is further provided and connected between the housings to connect the housings to each other. The housings each include a tube extending therefrom, and a first hose is connected between the tubes of the housing.

The housing is formed therein and includes respective passages respectively communicating between a chamber of the housing and the tube, wherein the tube includes a pipe extending outwardly therefrom and connected to the first hose.

[0012] A nozzle connected to a pipe of one of the two housings is further provided. The tubes each include a control valve, the control valves being received within the tube and controlling air passing through the tube.

The control valve comprises a valve member slidably received in each tube and means for biasing the valve member to block a passage in the housing and prevent air from flowing from the tube to the housing. Including.

[0014]

Further objects and advantages of the present invention are:
BRIEF DESCRIPTION OF THE DRAWINGS The following detailed description will be apparent from the following detailed description when carefully read with appropriate reference to the accompanying drawings.

Referring initially to FIGS. 1-3, the air compressor of the present invention includes a base 10 having an opening 11 formed therein for receiving a pinion 31 of a motor 30, the motor 30 comprising: For example, the motor 30 is fixed to the base 10 by a fastener 33 which is screwed into a screw hole for fixing the motor 30 to the base 10 through the hole 19 of the base 10. The base 10 includes an orifice 12 and an aperture 17 formed in the base and spaced apart. The weight 43 includes a pivot shaft 44 which extends therefrom through the base aperture 17 and is rotatably secured to the base 10 by a clamping ring 45 which engages an annular groove 441 of the pivot shaft 44. I do. The bushing 34 is engaged with the aperture 17 of the base 10 and the pivot shaft 44
Are rotatably fixed and supported on the base 10 between the pivot shaft 44 and the base 10.

The gear 40 includes a hole 41 which receives a pivot shaft 44 and is rotatably fixed to the base 10 by the pivot shaft 44. The gear 41 further includes a peripheral wall 42 that engages one or more shoulders 47 of the weight 43 or receives the weight 43, and the weight 43 and the gear 4
0 extends from gear 40 to rotate weight 43 so that it rotates simultaneously. The weight 43 includes a pin 46 which extends from or is fixed to the pin 46 and is spaced from or offset or eccentric with respect to the pivot axis 44. , The pivot shaft 44 is moved away from the pivot shaft 44.
And extend in parallel. The gear 40 is the pinion 3 of the motor 30
1 and is therefore driven by the motor 30. The base 10 is provided with an expanded member 13 at its upper and lower parts, and the expanded member 31 has a hub 16 formed thereon.
Etc., each having a number of holes 14.

The two housings 20, 21 extend from the housing, are aligned with one of the holes 14 in the base 10, and have one or more extensions 22 secured to the base 10 by fasteners 70 or the like. Respectively. Therefore, the housings 20 and 21 are connected to the base 1.
It can be adjusted to zero. Case 20, 2
1 includes a tube 26 extending from the housing and a pipe 27 extending from the tube 26, respectively. The pipes 27 each include a port 28. To connect the housing 20 and the housing 21 to each other, a hose 33 is connected between the ports 28 of the housings 20 and 21. The pipe 27 of the housing 21 is connected to the nozzle 61 and / or the hose 60 via the connector 62 and outputs compressed air generated by the compressor. An air gauge or a pressure gauge 50 is connected to the pipe 27 of the housing 20, and the air pressure in the housing 20 is measured. The housings 20 and 21 include a chamber 201 (see FIGS. 3 and 4) formed in the housing so as to slidably receive the piston 232, and the housings 20 and 21.
And a passage 262 formed in the housing to communicate the chamber 201 with the tube 26. Pistons 232 each include a rod 23 extending therefrom and formed with an orifice 24 that rotatably receives and secures a pin 46 of weight 43 by, for example, a bearing device, whereby piston 232 displaces eccentric pin 46 of weight 43. Motor 30
Accordingly, it moves in a reciprocating operation along the chamber 201 of the housings 20 and 21.

As shown in FIG. 3 and FIG.
Controls the flow of compressed air only from the housings 20 and 21 to the coupler 62 and prevents the compressed air from returning into the housings 20 and 21 by, for example, a regulating valve received in the pipe. Such control valves. The control valve is pipe 26
Each including a valve member 263 slidably received therein and a spring 264 engaged with the valve member 263 to bias the valve member 263 to close the passage 262 of the housing 20,21, respectively. A cup 261 is secured to one end of the tube 26 to retain the spring 264 and the valve member 263 within the tube 26.

The motor 30, the gear 40, and the weight 4
3 may be attached to the base 10 before the base 10 is fixed to the housings 20 and 21 in some cases. Base 10 has weight 4
The third pin 46 is easily and quickly fastened by the fastener 70 after passing through the orifice 24 of the rod 23.
1, so that the air compressor can be easily manufactured and assembled.

As shown in FIGS. 3 and 4, during operation,
The piston 232 is reciprocated along the chamber 201 of the housings 20 and 21 by the motor 30 via the eccentric pin 46 of the weight 43. The air received in the chamber 201 of the housing 20, 21 is passed through the passage 262 of the housing 20, 21;
The valve member 263 is moved to the spring 264 so that air enters the pipe 26.
And is directed to the nozzle 61 by the pump operation of the motor 30. As shown in FIG.
The one piston 232 is moved downward or toward the inside of the housing 21 so as to perform a pumping operation when the eccentric pin 46 of the weight 43 is rotated or moved to a lower position. At this time, the piston 232 of the housing 20
Is moved out of the housing 20 for the suction operation. FIG.
As shown in FIG. 5, the piston 232 of the housing 20 is moved upward or of the housing 20 so as to perform a pumping operation when the eccentric pin 46 of the weight 43 is rotated or moved to a high position. Moved inward. At this time,
The piston 232 of the housing 21 is used for the suction operation.
It is moved outside. Therefore, when the eccentric portion is rotated by one cycle by the motor, the piston 2
32 are each adapted to alternately pump, whereby the air compressor includes a double pumping system that performs two pumping operations and increases the pumping efficiency of the air compressor.

The eccentric pin 46 is eccentric by a weight 43 and is rotatably fixed to the base 10 to act as a crank, so that the weight 43 and the eccentric pin 46
It may be replaced by a crank or the like that is rotated to operate the 0, 21 rods 23 alternately in a reciprocating motion. The eccentric pin 46 connects the piston 232 to the housing 20,
It may be operated to move simultaneously or alternately with respect to one. The eccentric pin 46 connects the rods 23 of the housings 20, 21 pivotally or rotatably to each other.

The housings 20 and 21 have a base 10 so that the housings 20 and 21 can be adjusted relative to each other and the housings 20 and 21 can be easily fixed in accordance with the supporting members and the base of the housing.
May be adjustably secured to the base 10 by fasteners 70 engaged through the different holes 14. The motor 30, in particular the spindle of the motor 30, is
To the housing 2 without the need for gears 40 and weights 43, for example by a crank or the like.
The rods 0 and 21 may be operated alternately.

As shown, the pinion 31 of the motor 30 is engaged with the opening 11 of the base 10. Alternatively, the pinion 31 of the motor 30 enters the orifice 12 of the base 10 and engages the gear 40 so that the gear 40 and the weight 43
May be rotated or driven by the motor 30 having the pinion 31.

Accordingly, the air compressor of the present invention includes a double pump system that performs two pump operations when the eccentric portion is rotated by the motor for one cycle, thereby increasing the pump efficiency of the air compressor.

Although the invention will be described with some particularity,
It is understood that the present disclosure is illustrative only and that numerous changes may be made in the detailed arrangement, combination and arrangement of parts without departing from the spirit and scope of the invention as set forth in the appended claims. It shall be.

[Brief description of the drawings]

FIG. 1 is an exploded view showing an air compressor of the present invention.

FIG. 2 is a perspective view showing an air compressor of the present invention.

FIG. 3 is a sectional view showing the air compressor taken along line 3-3 in FIG. 2;

FIG. 4 is a sectional view similar to FIG. 3 showing the operation of the air compressor.

[Explanation of symbols]

 Reference Signs List 10 base 11 opening 12 orifice 13 expanded member 14, 19 hole 16 hub 17 aperture 20, 21 housing 201 chamber 23 rod 232 piston 24 orifice 26 pipe 261 cup 262 path 263 valve member 264 spring 27 pipe 28 port 30 motor 33 Hose 34 Bushing 40 Gear 41 Hole 42 Peripheral wall 43 Weight 44 Pivot shaft 441 Annular groove 45 Tightening ring 46 Eccentric pin 47 Shoulder 50 Cage 60 Hose 61 Nozzle 62 Coupler

Claims (7)

[Claims] 1. Two housings each having a chamber formed therein, a piston slidably received in each chamber of the housing, and a pump for moving the piston with respect to the housing. Actuating means operable to perform operations in a reciprocating operation at the same time, wherein said pistons each have a rod extending from said piston. 2. The air compressor according to claim 1, further comprising a pin rotatably connected to the rod of the piston, wherein the operating means is provided to rotate the pin in a reciprocating motion. 3. The air compressor according to claim 2, wherein said operating means includes a motor having a spindle, and wherein said pin is eccentrically fixed to said spindle. 4. The air compressor according to claim 1, further comprising a base, wherein the housing is fixed to the base. 5. The operating means includes a weight rotatably fixed to the base by a pivot shaft, and a pin extending from the weight and eccentric to the pivot shaft, the operating means further comprising: A motor fixed to the base and provided with a pinion thereon, including a gear rotatably fixed to the base by the pivot shaft, engaged with the pinion, and driven by the motor via the pinion, 5. The air compressor of claim 4 wherein said gear has a peripheral wall, said peripheral wall extending from said gear for receiving said weight and allowing said weight and said gear to rotate simultaneously with one another. 6. The apparatus further comprising means for adjustably securing the housing to the base, wherein the base includes two ends, and wherein the means for adjustably securing extends from each housing to the base. Claims: At least one extension that is adjustably secured, wherein said end of said base includes a plurality of holes therein for selectively aligning with said at least one extension of said housing. Item 7. The air compressor according to Item 4. 7. The housings each include a tube extending from the housing, a first hose is connected between the tubes of the housing, the housing is formed therein, and A conduit that communicates between the chamber of the housing and the tube, wherein the tube includes a pipe that extends outward from the tube and connects to the first hose; The air compressor according to claim 1, wherein a nozzle that outputs compressed air generated by the compressor is connected to the pipes of the two housings.