TW201715152A - Air compressor capable of reducing vibration during operation and using a low-power motor to reduce manufacturing cost - Google Patents

Abstract

The invention discloses an air compressor, which employs a support rack to fix a cylinder and a power mechanism. The cylinder is provided with at least one air chamber for allowing a piston to perform a reciprocal compression operation. The cylinder has an intake valve and an exhaust valve communicated with the air chamber in a unidirectional manner. The piston extends a piston link out of the cylinder. The power mechanism includes a rotary disc and a motor. An end of the rotary disc that faces the cylinder has a guiding rail arranged in a ring-shape. The guiding rail has at least one ragged track. The tail end of the piston link is mounted with an elastic member to keep the tail end in contact with the guiding rail. When the rotary disc is driven by the motor to take a turn, the piston link will generate at least one axial reciprocal stroke. As a result, the air compressor according to the invention drives the piston to perform a linear reciprocal motion by the rotation of the rotary disc, so as to reduce the vibration during operation and be able to use a low-power motor.

Description

Air compressor

The invention is a technical field of an air compressor, in particular to a design with stable operation and less vibration.

"Air compressor" is a kind of equipment that can inflate the items to be inflated. It is widely used in air cushions and tires. Because the air compressor is small and easy to carry, the required power supply can be powered by DC power supply and battery. Or connected to the car cigarette lighter socket, it is quite simple and convenient to operate and use. In general, the main structure of the conventional portable (charge) air machine is to install an air compressor by using a box body, the air compressor includes a motor and a piston body movable in the cylinder, the piston body The end is eccentrically pivoted to the motor-driven power wheel, whereby the motor drives the piston body to perform a reciprocating compression action in the cylinder, and the compressed air is transported from the cylinder to the gas storage seat, and then the gas storage seat The connected transfer hose is connected to the item to be inflated for the purpose of inflation. This mode of operation must overcome the upper and lower dead points of the piston body when the power wheel is running. Usually, it is equipped with a flywheel with weight to overcome this problem by inertial motion. Therefore, the machine is easy to generate vibration when running, and the motor must also adopt high power. The cost is relatively increased, and when the piston body reciprocates in the cylinder, such a model is also prone to high temperatures.

The main object of the present invention is to provide a smooth running air compressor, which mainly utilizes a turntable having a ring-shaped guide rail with a high end and a low end to guide the piston of a cylinder to generate linearity. The reciprocating compression action, thereby outputting the air with high efficiency, smooth and smooth operation, reducing the occurrence of vibration, and also lowering the required motor power and reducing the production cost.

In order to achieve the above object, the air compressor of the present invention has a cylinder fixed to a cylinder and a power mechanism, the cylinder having at least one air chamber for reciprocating movement compression of a piston, the cylinder having a one-way communication with the air chamber An intake valve and an exhaust valve, the piston extends outwardly from a piston connecting rod to the outside of the cylinder; the power mechanism includes a turntable and a motor, the turntable is driven by the motor, and the turntable faces the end face of the cylinder An annularly distributed guide rail having an axial position having at least one height difference; an elastic member mounted on the periphery of the piston rod to maintain the end of the piston rod in contact with the guide rail, whereby the turntable is received by the motor The drive rotates one revolution and the piston produces at least one axial reciprocating stroke.

The design of the present invention is to make the reciprocating compression process of the piston more smooth and smooth, and adopt a turntable whose center line is parallel to the moving direction of the piston, and the guide rail having the high and low undulating end faces of the turntable is in contact with the piston connecting rod to provide the same The force in the moving direction of the piston drives the piston to generate a reciprocating compression stroke, which achieves the advantages of stable operation and low failure rate.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

1‧‧‧ bracket

2‧‧‧ cylinder

21‧‧‧ air chamber

22‧‧‧Piston

221‧‧‧Piston connecting rod

222‧‧‧Fixed ring

24‧‧‧Intake valve

241‧‧‧Air intake

242‧‧‧Reed

25‧‧‧Exhaust valve

251‧‧‧ Vents

252‧‧‧Reed

26‧‧‧gas collection room

261‧‧‧Export

27‧‧‧ bottom cover

271‧‧‧ hole

272‧‧‧ stomata

28‧‧‧Flexible parts

3‧‧‧Power Agency

31‧‧‧Motor

32‧‧‧ Turntable

321‧‧‧rail

1 is a front view of the present invention; FIG. 3 is a front view of the present invention; FIG. 3 is an exploded view of the present invention; Figure 5 is a cross-sectional view taken along line BB of Figure 2; Figure 6 is a motion diagram (1) of the present invention; Figure 7 is a motion diagram (2) of the present invention.

1 to 5 are respectively a perspective view, a front view, an exploded view, and a schematic cross-sectional view of different positions. The air compressor of the present invention is a cylinder 2 and a power mechanism 3 fixed by a bracket 1.

The cylinder 2 has at least one gas chamber 21, and each of the gas chambers 21 is provided with a piston 22 for reciprocating compression. In the present embodiment, the gas chamber 21 has three, and the piston 22 also has three. The cylinder 2 has an intake valve 24 and an outlet valve 25 that communicate with the gas chamber 21. In addition, the cylinder 2 has a plenum chamber 26 in communication with the plurality of outlet valves 25, the plenum 26 having an outlet 261 connected to the line to be supplied with air. Both the intake valve 24 and the outlet valve 25 are one-way valves, which can be of various types. Only one of the descriptions is provided in this embodiment, and the scope thereof is not limited thereby. The air outlet valve 25 includes an air outlet 251 and a reed 252 that can be opened and closed only in one direction. The intake valve 24 includes an air inlet 241 and a reed 242 that can only be opened and closed in one direction. In this embodiment, the air inlet 241 penetrates the piston 22, and the reed 242 is unilaterally mounted to the piston. 22 on. When the piston 22 moves from the high point to the lowest point, the air chamber 21 is under negative pressure, the air outlet valve 25 is closed and the intake valve 24 is opened; otherwise the piston 22 is moved from the low point to the highest point. During the process, the intake valve 24 is closed, the air in the plenum 21 is compressed, the outlet valve 25 is opened, and air is collected into the plenum 26 for collection. The bottom of the air chamber 21 has a bottom cover 27, and the piston rod 221 of the piston 22 extends to the outside through the hole 271 of the bottom cover 27, and each hole 271 has a plurality of air holes 272 around it. The air chamber 21 is in communication with the bottom space of the piston 22.

An elastic member 28 is disposed on the outer periphery of the outer portion of the piston rod 221, and the elastic member 28 is a spring. The end portion of the piston rod 221 is further provided with a fixing ring 222. The ends are respectively locked between the bottom cover 27 and the fixing ring 222.

The power mechanism 3 includes a motor 31 and a turntable 32. In this embodiment, the turntable 32 is directly driven by the stirrup 31, but not limited thereto, the motor can also drive the turntable 32 through a reduction gear set to obtain a desired better rotation speed and Torque. The turntable 32 has an annularly distributed guide rail 321 facing the end surface of the cylinder 2, and the guide rail 321 is a circular arc track having at least one undulating drop track surface, which is an axial reciprocating stroke, that is, when When the turntable 32 rotates one revolution, a reciprocating axial stroke is generated between the contact point of the piston rod 221 and the guide rail 321; however, it is not limited thereto. If two or three high and low drop track surfaces are designed, there will be 2 ~3 axial reciprocating strokes. As shown in the figure, since the elastic member 28 is sleeved around the piston rod 221, the end of the piston rod 221 is kept in contact with the surface of the guide rail 321 of the turntable 322 at any time. Therefore, the present invention utilizes the rotation of the turntable 32, and the piston link 221 is in contact with the guide rail 321 to cause the piston 22 to linearly reciprocate, and the present invention sequentially drives the three pistons in the cylinder 2 to operate. Reciprocating compressed air efficiently and quickly.

Next, the actual operation mode of the present invention will be described. As shown in Fig. 6, since only the operation of the single piston 22 in the cylinder 1 can be exhibited in the angle problem diagram, actually three pistons are actuated. As shown, when the lowest position of the guide rail 321 of the turntable 32 is in contact with the piston link 221 of the piston 22, the piston 22 is located at the lowest position in the air chamber 21. Thereafter, as the turntable 32 rotates, the piston 22 rises synchronously, the intake valve 24 is closed, and the air in the plenum 21 is compressed through the outlet valve 25 into the plenum 26. As shown in FIG. 7, as the turntable 32 rotates, the highest position of the guide rail 321 is in contact with the piston link 221, and the piston 22 will end. Stop the compressed air stroke. As shown in FIG. 7, after the turntable 32 continues to rotate, the piston 22 gradually descends in the air chamber 21, the indoor negative pressure will cause the exhaust valve 25 to be closed, the intake valve 24 is opened, and the outside air passes through the air hole 272. The air inlet hole 242 enters the air chamber 21 as a preparation for gas storage. In this cyclic operation, the piston 22 reciprocates the air to smoothly output the air. In the embodiment, the cylinder 2 is equiangularly distributed, and three chambers 21 and a piston 22 are distributed in a concentric circle. When the turntable 2 rotates one revolution, three air reciprocating compression strokes are generated to make the air more efficient. Output.

In summary, in order to make the reciprocating compression process of the piston more smooth and smooth, the air compressor of the present invention adopts a turntable whose center line is parallel to the moving direction of the piston, and uses the guide rail with the high and low undulating end faces of the turntable to connect with the piston. The rods are in contact and provide the same force in the direction of movement of the piston to cause the piston to generate a reciprocating compression stroke. Thus, the piston operates more smoothly, has lower vibration, has a lower failure rate, and has a higher motor power to drive the turntable. Less, can reduce the cost of the motor, in line with the patent application requirements.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made by the scope of the present invention remain within the scope of the present invention.

1‧‧‧ bracket

2‧‧‧ cylinder

221‧‧‧Piston connecting rod

28‧‧‧Flexible parts

3‧‧‧Power Agency

31‧‧‧Motor

32‧‧‧ Turntable

321‧‧‧rail

Claims (7)

An air compressor comprising: a bracket fixed with a cylinder and a power mechanism; the cylinder having at least one air chamber for reciprocating movement of a piston therein, the cylinder having an intake valve and a row in one-way communication with the air chamber a gas valve, the piston extends outwardly from a piston rod to the outside of the cylinder; the power mechanism includes a turntable and a motor, the turntable is driven by the motor, and the turntable has an annular distributed guide rail facing the end surface of the cylinder. The axial position of the annular path of the guide rail has at least one height difference; an elastic member is mounted on the periphery of the piston rod, and the end of the piston rod is kept in contact with the guide rail, and the piston is generated when the turntable rotates one turn At least one reciprocating stroke. The air compressor of claim 1, wherein the cylinder has a plurality of air chambers, each cylinder has a piston, and the cylinder further has a gas collecting chamber, and the plurality of gas chambers are correspondingly The exhaust valve controls the timing of communication with the plenum. The air compressor of claim 1 or 2, wherein the intake valve comprises an air inlet and a reed that can only be opened and closed in one direction. The air compressor of claim 1 or 2, wherein the exhaust valve comprises a venting opening and a reed that can only open and close in one direction. The air compressor of claim 1, wherein the intake valve is located at the piston. The air compressor of claim 1, wherein the cylinder further has a bottom cover at the bottom of the air chamber, the piston link extending to the outside through the bottom cover, the bottom cover further having at least one air hole. The air compressor of claim 2, wherein the air chamber further has a bottom cover, the piston connecting rod extends to the outside through the bottom cover, and the end portion of the piston connecting rod is further provided with a fixing ring, the elasticity The member is a spring and is mounted on the outer portion of the bottom cover of the piston rod. The two ends of the elastic member are respectively clamped between the bottom cover and the fixing ring.