KR100352274B1 - Rotating valve for converting flow direction of fluid - Google Patents

Abstract

The present invention relates to a rotationally swing-type directional valve having a structure capable of varying the supply port of the fluid in accordance with the position of the piston rotated by the drive shaft, the valve is driven by the power transmitted from the outside (170) And a tooth portion 152 engaged with the input gear 171 fixed to the drive shaft 170, and transmits the rotational force input through the drive shaft 170 to the rotor 230 through the slider 120. By rotating the driven gear 150 and the rotating disk valve 250 while being driven by the drive shaft 170, the sun gear 296 fixed on the drive shaft 170 and the inner fixed disk 247 A pinion 298 fixed to the distal end of the pinion shaft 298a rotatably mounted and engaged with the sun gear 296, and a ring gear 294 integrally fixed to the rotary disk valve 250 and in which the pinion 298 is inscribed. Consisting of a ring gear assembly 290 Planetary gear set is included.

Description

ROTATING VALVE FOR CONVERTING FLOW DIRECTION OF FLUID}

The present invention relates to a rotationally oscillating directional valve, and more particularly, to a rotationally oscillating directional valve having a structure capable of varying a supply port of a fluid according to a position of a piston rotated by a drive shaft.

In general, hydraulic and pneumatic devices use various types of valves to control the flow of fluid or to change the supply direction. In particular, when it is necessary to change the flow path alternately in two directions, such as a hydraulic valve employed in a vehicle power steering system, a three-way four-port valve having four ports is generally employed.

The conventional three-way four-port valve having such a configuration reduces the reliability of operation because the overall structure of the valve is large and a large amount of power is required when changing the flow path in case of a large capacity, and a variable speed in a device that needs to vary the flow path from time to time Due to this limitation, there is a problem that it is impossible to change the euro quickly.

The present invention devised to solve such a problem provides a rotationally swing-type directional control valve that can be used smoothly even in a large-capacity hydraulic device by improving the variable speed by rapidly changing the flow path by the piston reciprocating in the cylinder. Its purpose is to.

1 is an exploded perspective view of a configuration of a rotational swing type directional control valve according to the present invention;

2 is a cross-sectional view showing the configuration of a rotational swing-type directional control valve according to the present invention;

Figure 3 is a side view showing the configuration of a rotational swing type directional control valve according to the present invention,

4 is a view for explaining the operating state of the rotational swing-type directional control valve according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

110: Guide plate 120: Slider

220: housing 225a to 225d: stator

230: rotor 232a to 232d: piston

247: inner fixed disk 250: rotary disk valve

252b: valve hole 260: external fixed disk

271: drive shaft 290: ring gear assembly

310, 320: supply, discharge hose

The above object of the present invention is a housing having a pair of stators providing a plurality of working chambers, a rotor having a plurality of pistons for pressurizing fluid in the working chamber while moving away from or near the stator in the housing, A fixed disk coupled to both sides, a guide rail fixedly opposed to the inner surface of the rotor, a slider sliding up and down along the guide groove formed on the guide rail, and a plurality of valve grooves to the working chamber. A rotary swing type device having a rotating disk valve for supplying and discharging fluid, and an outer fixed disk disposed outside the rotating disk valve, comprising: a drive shaft rotated by externally transmitted power, and an input fixed to the drive shaft It has teeth that are meshed with gears, and the rotational force input through the drive shaft is transferred to the rotor through the slider. And a driven gear that rotates it, and a rotating disk valve driven by the drive shaft, the sun gear fixed on the drive shaft and the pinion fixed to the end of the pinion shaft rotatably mounted on the inner fixed disk. And a planetary gear set consisting of a ring gear assembly having a ring gear which is integrally fixed to the rotary disk valve and in which the pinion is inscribed.

Hereinafter, with reference to the accompanying drawings it will be described in detail with respect to the rotational swing type direction switching valve according to a preferred embodiment of the present invention.

1 and 2 are exploded perspective views of the configuration of the rotational swing-type directional control valve according to the present invention, respectively, Figure 3 is a side view showing the configuration of the rotational swing-type directional control valve according to the present invention, Figure 4 is the present invention It is a figure explaining the operating state of a rotational swing type direction change valve according to the present invention.

In the rotational swing type directional valve of the present invention, the rotor 230 having a plurality of pistons 232a to 232d is formed and rotated in a housing 220 having stators 225a to 225d providing a plurality of working chambers. It is a structure that changes the direction of the fluid by alternately intake and discharge in the working chamber according to the rotational movement of the rotor 230, the drive shaft 170 receives power from the outside for the rotational movement of the rotor 230 Installed.

The inner fixing disk 247 having a plurality of inner holes 247a and 247a 'is arranged to be sealingly coupled to both sides of the rotor 230, and a plurality of the inner fixing disks 247 (outside the inner fixing disk 247). In this case, a rotating disk valve 250 having a plurality of valve holes 252b provided by eight partition walls 252a (eight in this embodiment) is arranged. In addition, an outer fixed disk 260 having a plurality of outer holes 262 and 262 'is disposed outside the rotating disk valve 250. A planetary gear set for driving the rotary disk valve 250 is disposed between the inner fixed disk 247 and the outer fixed disk 260. The first to fourth discharge pipes 322, 324, 326, and 328, together with the supply hose 310 having the first to fourth inlet pipes 312, 314, 316, and 318, are located outside the outer fixed disk 260. Discharge hose 320 having a is disposed to supply and discharge the fluid in the housing (220).

Power introduced into the drive shaft 170 is transmitted to the rotor 230 through the driven gear 150 and the slider 120. At this time, the slider 120 is to move up and down along the guide rail 112 formed on the guide plate 110 to convert the rotational movement of the driven gear 150 to a predetermined angular movement to transfer to the rotor 230. do.

The housing 220 is provided with a pair of stators 225a to 225d for providing a plurality of working chambers, and these stators 225a to 225d are formed at equal intervals on the protruding inner circumferential surface 221 of the housing 220. It is. Opposite ends of the housing 220 are in turn a planetary gear set for driving the valve 250, including a rotating disk valve 250 for supplying or discharging fluid to the working chamber.

In addition, on the protruding outer circumferential surface 231 of the rotor 230, four pistons 232a to 232d corresponding to the four stators 225a to 225d in pairs are formed, so as to move away from or close to the stators 225a to 225d. Supply the fluid in the working chamber to the place where it is needed, or drain the fluid into the oil reservoir. A plurality of fixing frames 160 and 160 ′ are attached to the inner circumferential surface of the rotor 230 to rotatably support the driving shaft 170 and the driven gear 150 together with the guide plate 110.

Looking at the configuration of the power transmission device for transmitting the power of the drive shaft 170 to the rotor 230, the guide plate 110 is attached to the inner circumferential surface of the rotor 230 and provided with a guide rail 112, and a guide at one end A roller 120 having a roller fixing shaft 122 which moves up and down along the guide rail 112 through the roller 130 and a gear fixing shaft 124 on which the driving gear 150 is fixed is formed at the other end. And a support groove 150 rotatably supporting the drive gear 150 via the bearing 154, and the locking frame 160 having the locking jaw 162, and the locking groove 162 'to which the locking jaw 162 is engaged. And a fixing frame 160 'having a plurality of fastening holes 164.

Here, the slider 120 is provided with a mass portion 126 for maintaining balance during rotation of the rotor 230, and a ring groove 122a is formed in the roller fixing shaft 122, The inner diameter portion 132 of the roller 130 is inserted into the outer diameter portion of the roller fixing shaft 122, and then the fixing ring (142 in FIG. 4) is fitted into the ring groove 122a to prevent the roller 130 from being separated. . In addition, a ring groove 124a is also formed in the gear fixing shaft 124. At the time of assembly, the driving gear 150 is inserted into the gear fixing shaft 124, and then the fixing ring is fixed to the ring groove 124a (144 in FIG. 2). ) To prevent separation of the drive gear 150.

When the power introduced through the drive shaft 170 is transmitted to the rotor 230 through the driven gear 150 and the slider 120, the rotor 230 is rotated and the piston disposed between the two stators is left and right. Pressurize and move the fluid in the working chamber.

For smooth lubrication between the friction contact elements, the rotor 230 is filled with lubricating oil, and the oil 230 is communicated with the inside of the rotor 230 through the oil hole 231 so that the lubricating oil is always at the outer surface of the rotor 230 and the stator 225a. It is preferable to make an oil film form between -225d).

At the time of assembly, in order to maintain the airtight inside the rotor 230, the inner fixed disk 247 is disposed on both sides of the rotor 230, and the drive shaft via the bearing 217 in the center of the inner fixed disk 247. 170 is rotatably supported. It can be seen that the drive shaft 170 is rotatably supported by the bearing 218 on the outside in addition to the bearing 217. Outside the rotating disk valve 250, an outer fixed disk 260 having a plurality of (eight) outer holes 262 and 262 'is disposed. A planetary gear set for driving the rotary disk valve 250 is disposed between the inner fixed disk 247 and the outer fixed disk 260.

Rotating disk valve 250 has a plurality (8) of valve holes 252b for selectively communicating the inner and outer holes 247a and 247a 'and the outer and outer holes 262 and 262' with the fluid being transferred to the working chamber. It is. In the configuration of the planetary gear set for rotating the rotary disk valve 250, the sun gear 296 that is integrally rotated with the drive shaft 170, and the pinion 298 that is external to the sun gear 296 at one end to prevent separation A nut 297 is fitted, and the other end has a pinion shaft 299 rotatably supported by the inner fixed disk 247, and a ring gear 294 in which the pinion 298 is inscribed. And a ring gear assembly 290 for rotating the rotary disk valve 250 according to the driving force of the drive shaft 170 transmitted through the pinion 298. The fixing hole 292 formed in the ring gear assembly 290 is screwed to the rotating disk valve 250.

2, in the center power transmission device, the slider 120 is slidably mounted to the guide rail 112 of the guide plate 110 via the roller 130. As shown in FIG. In addition, the teeth 152 of the drive gear 150 are operatively engaged with the teeth 172 of the input gear 171. Therefore, when the driven gear 150 rotates through the drive shaft 170, the rotational force of the driven gear 150 is transmitted to the guide plate 110 through the slider 120, at this time, is transmitted to the guide plate 110 Power is transmitted to the rotor 230 to rotate it. The input gear 171 fixed to the distal end of the drive shaft 170 is engaged with the tooth 152 fixed to the distal end of the driven gear 150 to allow power transmission at an angle of 90 °. In addition, the drive shaft 170 is rotatably mounted on the fixing frame 180 via the bearing 174. At this time, one input gear 171 is rotatable on the drive shaft 170 via the bearing 190. The other input gear 171 ′ is fixed to the drive shaft 170 by the key 192. The rotor 230 is rotatably mounted on the inner side of the housing 220 by a plurality of bearings 90.

In the rotational swing type direction switching valve having such a configuration, for example, when external power flows into the drive shaft 170 from a drive means such as an electric motor driven by electrical energy, the power transmitted to the drive shaft 170 is input gear 171. ), The driven gear 150 and the slider 120 are sequentially transmitted to the rotor 230. Accordingly, as the rotor 230 starts to rotate, the pistons 232a to 232d disposed between the two stators 225a to 225d move, and are fed from the hydraulic pump as the pistons 232a to 232d move. Fluid in the working chamber is supplied to various machinery or fluid discharged from the machinery is discharged to the oil storage tank.

At this time, the rotational force of the drive shaft 170 is transmitted to both planetary gear sets. That is, as the drive shaft 170 rotates, the sun gear 296 fixed on these axes rotates, and the rotational force of the sun gear 296 is transmitted to the pinion 298 and the ring gear 294 to rotate the rotary disk valve 250. Rotate). The rotation of the rotary disk valve 250 causes the valve hole 252b to communicate with the outer holes 262 and 262 'of the outer fixed disk 260 and the inner holes 247a and 247a' of the inner fixed disk 247 in a straight line. At this point, the compressed fluid is introduced, and the fluid in the working chamber is moved due to the movement of the pistons 232a to 232d according to the rotational movement of the rotor 230 as described above. In FIG. 2, only the supply hose 310 communicating with the outer hole 262 ′ is illustrated, but the discharge hose 320 is also assembled to communicate with the outer hole 262 in the same structure.

This fluid movement process will be described with reference to FIGS. 3 and 4.

For the purpose of illustration, in these figures alternately arranged ports provided by a plurality of inner holes 247a and 247a 'and outer holes 262 and 262' formed in the inner fixing disk 247 and the outer fixing disk 260. Are denoted by 332 to 348. That is, two ports introduced through the first supply pipe 312 or discharged through the first discharge pipe 322 are represented by the first port 332 and the fifth port 342, and the second supply hose 314 is provided. The two ports introduced through the second discharge hose 324 but discharged through the second discharge hose 324 into the second port 334 and the sixth port 344 are introduced through the third supply hose 316 or the third discharge hose ( Two ports discharged through the 326 to the third port 336 and the seventh port 342, two ports introduced through the fourth supply hose 318 or discharged through the fourth discharge hose 328 Are denoted as the fourth port 338 and the eighth port 348.

These first to eighth ports 332 to 348 have flow paths variable by pistons 232a to 232d, and inner holes 247a and 247a 'which are opened and closed by valve holes 252b formed in the rotating disk valve 250. ) And the outer holes (262, 262 ') to be able to move the fluid. That is, the inner holes 247a and 247a 'and the outer holes 262 and 262' communicate with the first to fourth ports 332 to 338 by the valve holes 252 of the rotating disk valve 250 to be in fluid. It becomes possible to move, which will be described in detail in the following FIG.

As described above, when external power flows into the drive shaft 170 from a driving means such as an electric motor driven by electric energy, the power transmitted to the drive shaft 170 is input gear 171, the tooth 152 and the slider. Passed 120 in turn to the rotor 230. Accordingly, as the rotor 230 starts to rotate, the pistons 232a to 232d disposed between the two stators 225a to 225d move, and the fluid in the working chamber is moved by the movement of the pistons 232a to 232d. It moves and is supplied and discharged to various hydraulic devices.

At this time, the rotational force of the drive shaft 170 is transmitted to both planetary gear sets. That is, as the drive shaft 170 rotates, the sun gear 296 fixed on these axes rotates, and the rotational force of the sun gear 296 is transmitted to the pinion 298 and the ring gear 294 to rotate the rotary disk valve 250. Rotate). The rotation of the rotary disk valve 250 causes the valve hole 252b to communicate with the outer holes 262 and 262 'of the outer fixed disk 260 and the inner holes 247a and 247a' of the inner fixed disk 247 in a straight line. At this point, the fluid to be compressed is introduced, and the rotating disk valve 250 is also rotated while being moved into the working chamber due to the movement of the pistons 232a to 232d according to the rotational movement of the rotor 230 as described above. In this process, the inner holes 247a and 247a 'of the inner fixed disk 247 and the outer holes 262 and 262' of the outer fixed disk 260, the inlet pipes 312-318 and the discharge pipes 322-328. ) Will be discharged.

As an example, assuming that the first piston 232a of the rotor 230 is positioned as shown in solid line in FIG. 4, the first inlet pipe 312 of the supply hose 310 is provided by the first piston 232a. While the first port 332 is in communication with each other, the first inlet pipe 312 and the fifth port 342 are in a blocked state. Therefore, the fluid introduced through the first inlet pipe 312 flows into the first port 332 along the arrow direction P2 and then oils through the first discharge pipe 322 along the arrow direction Q2. It is possible to discharge to a storage tank, a hydraulic operation chamber, etc. At this time, the fluid movement in the arrow direction P1 is blocked.

Next, when the rotor 230 is rotated in the direction of the arrow R by the drive shaft 170 to be in the position shown by the virtual line, the first inlet pipe of the supply hose 310 by the first piston 232a. While the 312 and the fifth port 342 communicate with each other, the first inlet pipe 312 and the first port 332 are blocked. Therefore, the fluid introduced through the first inlet pipe 312 flows into the fifth port 342 along the arrow direction P1 and then discharges through the second discharge pipe 324 along the arrow direction Q1. It becomes possible. At this time, the fluid movement in the arrow direction P2 is blocked.

In the present invention described so far, the hydraulic valve has been described as an example, but one of ordinary skill in the art can understand that it can be applied to various other fluids such as pneumatic valves using pressurized air. will be. In addition to the flow path variable valve, it is possible to apply the rotation oscillation device of the present invention to an actuator which drives an output shaft by means of a compressor or compressed oil for compressing a fluid and operates various mechanical devices. It can also be used as an intake and exhaust valve in a coaxial reciprocating engine.

According to the present invention described above, by varying the supply or discharge port of the fluid in accordance with the position of the piston rotated by the drive shaft there is an advantage that can be used smoothly in various fluid machines, including a large-capacity hydraulic device.

Claims (2)

A housing 220 having a pair of stators 225a to 225d providing a plurality of working chambers, and a plurality of pressurizing fluids within the working chamber while moving away from or near the stators 225a to 225d within the housing 220. A rotor 230 having pistons 232a to 232d, an inner fixing disk 247 sealingly coupled to both sides of the rotor 230, and a guide rail fixed to an inner surface of the rotor 230; 233, a slider 120 sliding up and down along the guide groove 233a formed in the guide rail 233, and a plurality of valve holes 252b to supply and discharge fluid to and from the working chamber. In the rotational swing type device having a rotary disk valve 250 and an outer fixed disk 260 disposed outside the rotary disk valve 250, Drive shaft 170 rotated by the power transmitted from the outside, It has a tooth portion 152 engaged with the input gear 171 fixed to the drive shaft 170, and transmits the rotational force input through the drive shaft 170 to the rotor 230 through the slider 120 to rotate it And driven gear 150, By rotating the rotary disk valve 250 while being driven by the drive shaft 170, the sun gear 296 fixed on the drive shaft 170 and the pinion shaft 298a rotatably mounted on the inner fixed disk 247 Ring gear assembly 290 having a pinion 298 fixed to the distal end thereof and engaged with sun gear 296 and a ring gear 294 integrally fixed to rotary disk valve 250 and in which pinion 298 is inscribed. Rotational swing type directional control valve comprising a planetary gear set consisting of. The method of claim 1, A plurality of inner holes 247a and 247a 'are radially formed in the inner fixed disk 247, and a plurality of outer holes 262 and 262' are formed radially in the outer fixed disk 260, and a rotating disk The valve 250 has a plurality of valve holes 252b which are selectively communicated with these holes 247a, 247a 'and 262, 262' to allow fluid movement into the working chamber. A plurality of outer holes 262 and 262 'formed in the outer fixed disk 260 has a supply hose 310 and a plurality of discharge pipes having a plurality of inlet pipes 312-318 for supplying fluid into the working chamber. Rotational swing type directional control valve, characterized in that the discharge hose 320 having a.