KR20220076007A - vane motor - Google Patents

Abstract

A casing having an inlet and an outlet through which the pressure fluid is input and discharged, and a rotor configured to rotate about a rotary shaft mounted on the casing by receiving the pressure of the pressure fluid within the casing, the rotor having a central axis coincident with the rotary shaft as a whole A vane motor installed in a cylindrical body and a groove formed on the side of the body and having a vane whose width protrudes from the groove changes according to the rotational phase, and the pressure fluid inlet is injected into the space between the casing and the rotor body. It is characterized in that it is provided with a plurality of holes spaced apart from each other so as to be able to do so.
According to the present invention, it is possible to adjust the pressure fluid supply amount in the vane motor by adjusting the position and opening and closing of each of the plurality of holes constituting the fluid inlet installed to supply the pressure fluid to the vane motor, and to easily control the vane motor output or torque. have.

Description

vane motor

The present invention relates to a vane motor, and more particularly, to a configuration capable of increasing efficiency and facilitating output or torque control in a vane motor capable of generating rotational force through pneumatic pressure.

A vane motor is one of the mechanical devices that converts fluid pressure into rotational power. 1 shows an example of a conventional vane motor.

Here, a rotating rotor is installed in the casing 211 , and a part of the casing 211 has a fluid inlet 253 into which a fluid applying pressure is introduced and a fluid outlet 255 through which the fluid is discharged. When a pressure fluid is introduced into the fluid inlet 253 , the fluid pressure extends to the outside of the rotor and acts on the vanes 235 whose extension length is variable. Accordingly, while the vane 235 moves in the pressure direction, the entire rotor rotates within the casing 211 . When the fluid that transmits the pressure to the vane 235 reaches the fluid outlet 255 of the case, the fluid is discharged through the low pressure fluid outlet 255 .

That is, when the pressure fluid entering the fluid inlet meets the fluid outlet with a low pressure, the pressure is applied to the vane 235 to rotate the rotor while exiting the fluid outlet.

At this time, the vane 235 is coupled to the rotor body 231 , and the length of the vane 235 protruding from the body 231 may be variable. To this end, the vane 235 is inserted into the groove 231a of the rotor body 231 and can move in the groove 231a in the longitudinal direction of the groove. Since the interval between the inner wall surface of the casing 211 and the rotation shaft 233 of the rotor body 231 is different depending on the position of the inner wall surface of the casing, a large portion of the vane 235 is located in the groove ( 231a), the protruding length of the vane 235 increases, and in a narrow space, most of the vanes are inserted into the main body groove, thereby reducing the protruding length of the vane.

In order for the vane 235 to smoothly enter and exit the groove 231a of the main body 231, an elastic body such as a spring may be included at the bottom of the groove between the vane and the vane. Alternatively, a separate spring may not be installed because the vane may come out of the groove by the rotational centrifugal force of the rotor.

In a section in which the interval between the rotor body 231 and the inner wall surface is narrowed, when the rotor body 231 rotates, the tip of the vane 235 is pressed to be inserted into the groove 231a while in contact with the inner wall surface.

However, in the conventional vane motor, if the gap between the end of the vane 235 and the inner wall surface of the casing 211 is too large, the fluid escapes into this gap and causes a loss of pressure. There is a problem in that energy due to fluid pressure is lost due to friction due to the severe friction, and the cost of replacement and maintenance increases due to wear of the vane and inner wall surface. Since these problems are in a trade-off relationship with each other and cannot be completely solved in the existing vane motors, experimentally the most efficient and durable The appropriate gap size must be determined.

In addition, in order to increase the rotational force of the rotor due to the fluid pressure, the total amount of fluid force acting on the vanes must be increased. It is necessary to increase the area in contact with the vane and the fluid.

However, if the vane comes out too far from the groove, it may come off completely, or vibration or other unstable conditions may occur while the vane is rubbed against the inner wall of the casing. Form is important.

In addition, it is always required to obtain an efficient configuration that can increase the rotational force by a small amount of pressure fluid in the vane motor, and in particular, in a vane motor installed in a mechanism that moves the pressure fluid in a limited amount of pressure fluid tank, such an efficient The need for composition is further increased. Therefore, this necessity is always a consideration even in a design that increases the contact area between the vane and the pressure fluid.

On the other hand, it can be a problem to easily and accurately control the motor output or torque in the vane motor. The output or torque of the vane motor may be adjusted by varying, for example, the air pressure itself supplied to the fluid inlet, or may be adjusted by adjusting the amount of air provided in one cycle even at the same pressure. However, in the case of providing air from the same air tank to the vane motor, the tank pressure is highly dependent on the amount of remaining air in the tank, and it can be adjusted in the condition that a means such as a motor or a blower to compress air is not always provided in the tank. It may not be a possible variable.

The amount of air provided in one cycle largely depends on how and where the air inlet is arranged in the vane motor. Even in this case, there may be a change in the amount of air provided according to the number of revolutions of the vane motor, a change in the amount of air provided according to a change in tank pressure, and a change in the amount of air provided due to the variability of the air inlet.

Variable operation of the shape or area of the air inlet may be difficult to perform easily and accurately without other problems depending on the interaction with the vane of the rotor when the air inlet is installed on the side wall of the cylindrical casing of the vane motor.

Republic of Korea Patent Registration 10-1116511: Air vane motor with liner Republic of Korea Patent Registration 10-1874583: Vane Motor

The present invention is to reduce the difficulty of adjusting the output or torque through the control of the pressure fluid supply in the conventional vane motor described above. An object of the present invention is to provide a configuration capable of adjusting the torque by easily adjusting the amount of air.

The present invention for achieving the above object,

a casing having a pressure fluid inlet through which the pressure fluid is introduced and a pressure fluid outlet through which the pressure fluid is discharged;

and a rotor configured to receive the pressure of the pressure fluid in the casing and rotate about a rotation shaft mounted on the casing,

The rotor is a rotor body in the form of a cylinder (or thick disk) having a central axis coincident with the axis of rotation, and is installed in the vane guide groove formed on the side of the rotor body. In the branch vane motor,

The pressure fluid inlet is characterized by having a plurality of holes spaced apart from each other so as to inject the pressure fluid into the space between the casing and the rotor body according to the rotation of the rotor.

According to one aspect of the present invention, the casing may be made in the form of a cylindrical closing container in which both ends of the cylindrical outer cylinder (casing body) portion accommodating the rotor when viewed as a whole are closed with a disk-shaped closing plate portion, in which case the normally closed The plate, the rotor body, and the vane are capable of sliding with each other and are installed so as to have a fine gap through which the pressure fluid is difficult to leak. Accordingly, the inner side of the cylindrical outer cylinder and the outer side of the rotor body, on the other hand, are connected in turn to a partition space surrounded by the rear surface of the vane, and may be provided with a plurality of holes spaced apart from each other.

In this case, the plurality of holes constituting the inlet of the pressure fluid may be arranged along a curved trajectory close to a circular arc on the finish plate.

At this time, at least one of the finishing plate is made with a hole through which the rotating shaft of the rotor can be withdrawn to transmit rotational power, and a bearing for reducing friction between the rotating shaft and the closing plate may be interposed in this hole.

In this case, an extension made by partially removing the rotor body to further reveal the vanes may be formed at the rear of the inlet of the vane guide groove coupling the rotor body and the vanes in the rotational direction. In this case, the holes constituting the inlet of the pressure fluid are formed and arranged to overlap only the extension part of the space inside the cylindrical outer cylinder and outside the rotor body when viewed in the longitudinal direction of the rotation shaft (in the side cross-sectional view), so that the rotor rotates and When the extension comes to a position where it overlaps with the plurality of holes forming the pressure fluid inlet of the closing plate, the pressure fluid can flow from the fluid inlet through the extension into the partition space surrounded by the rotor body, the casing, and the rear surface of the vane. A greater force can be applied, and the supply of the pressure fluid through the hole can be stopped at a position where the hole does not overlap the extension.

In one aspect of the present invention, the rotor is accommodated in the casing, and the end of the vane is in contact with the inner surface (inner wall surface) while holding the pressure fluid inside until the pressure fluid injected through the inlet of the casing is discharged through the casing outlet. A cylindrical inner cylinder may be further provided such that the rotational center axis position within the casing is spaced apart from the rotor rotational axis, but is configured to rotate together when the rotor rotates.

In this case, the finishing plate can be slid (sliding) at both ends of the inner cylinder in the longitudinal direction (in the direction of the axis of rotation), the rotor body and both ends of the vane. have.

In this case, the rotational center axis of the cylindrical inner cylinder and the rotational axis of the rotor maintain a constant position within the casing, and when the cylindrical inner cylinder rotates within the casing, the friction between the outer wall surface of the cylindrical inner cylinder and the inner surface of the casing is reduced. Cloud means may be further provided.

In the operation of the vane motor by the pressure fluid, when the cylindrical inner cylinder is provided, the role of the casing when the cylindrical inner cylinder is not provided can be replaced. For example, when the inlet and outlet of the pressure fluid are installed on the finish plate, the inlet is the inside of the cylindrical inner cylinder and the outside of the rotor body when viewed in the direction of the rotation axis. It can be installed to overlap.

The extended portion may be limitedly installed on both end surfaces or one end surface of the cylinder constituting the rotor, or may be formed on the rear entrance side of the vane guide groove through the entire length of the cylinder.

The plurality of holes constituting the inlet of the pressure fluid in the finish plate may be installed to be spaced apart from each other along a curved trajectory close to a long arc in the circumferential direction of the circle formed by the inner cylinder, and the hole itself may have a partial arc shape.

In the type having the inner passage and extension part together, a plurality of holes constituting the inlet of the pressure fluid are arranged along a part of the trajectory of the extension part when the rotor rotates, and among the holes forming the fluid inlet of the finish plate as the rotor rotates, the extension part When it comes to a position aligned (overlapping) with one, the pressure fluid can flow into the space between the rotor body and the inner cylinder through the extension at the fluid inlet, and can apply a greater force to the rear surface of the vane.

In another aspect of the present invention, a plurality of holes formed in the casing may be installed in the cylindrical casing body rather than the closing plate. In this type, when forming an extension from the vane guide groove inlet to the inlet at the rear of the vane, it can be formed over the entire length of the rotor. There is no need to form an extension limited to the cross-section.

In the present invention, when the configuration of the vane motor includes the pressure fluid flow path (pipe) coupled to the pressure fluid inlet, a plurality of flow paths connected one by one to a plurality of holes constituting the pressure fluid inlet each includes a separate opening/closing means for each flow path. By operating this opening/closing means, the torque or output of the vane motor can be adjusted by adjusting the amount of pressure fluid supplied to the vane motor for each rotation period of the rotor in a multi-stage manner (stepwise).

According to the present invention, the pressure fluid supply amount in the vane motor is controlled by controlling the opening and closing of each of a plurality of holes forming the fluid inlet installed on the finish plate to supply the pressure fluid to the vane motor, and the output or torque of the vane motor can be easily adjusted. can

According to one aspect of the present invention, in particular, by installing the extended part on the rotor and arranging the fluid inlet hole to overlap the extended part limitedly, it is possible to efficiently provide rotational force to the rotor with a small amount of compressed air to rotate it.

1 is a side cross-sectional view showing the configuration of a conventional vane motor;
2 is an external perspective view showing an external appearance in an embodiment of the present invention;
Figure 3 is an exploded perspective view showing the same embodiment as Figure 2;
Figure 4 is a perspective side view showing the same embodiment as Figure 2;
5 is a piping configuration diagram conceptually illustrating a configuration of a piping for supplying a pressure fluid to a pressure fluid inlet according to an embodiment of the present invention.
6 is an exploded perspective view showing another embodiment of the present invention;
Fig. 7 is a side cross-sectional view showing the same embodiment as Fig. 6;
8 is an exploded perspective view showing another embodiment of the present invention;
Fig. 9 is a perspective side view showing the same embodiment as Fig. 8;

Hereinafter, the present invention will be described in more detail through specific examples with reference to the drawings.

(Example 1)

2 is an external perspective view showing an external appearance in an embodiment of the present invention.

In this embodiment, the entire vane motor is made with a casing forming the outermost shell, a cylindrical inner cylinder located in the casing, and a rotor installed in the inner cylinder, and most of the casing and rotor are basically the same as those of the existing vane motor. can be done similarly.

For example, the casing includes a cylindrical outer cylinder forming the casing body 11 and finishing plates 13 and 15 for closing both ends in the longitudinal direction of the casing body 11, and each of the closing plates 13 and 15 has a rotor on the rotor. A rotary shaft installation hole through which the connected rotary shaft 33 is mounted or passed, a pressure fluid inlet 135 consisting of a plurality of holes into which an external high-pressure fluid is introduced, and a pressure fluid outlet 133 through which the high-pressure fluid is discharged through the inside are disposed. . A bearing is installed in the rotation shaft installation hole, so that the rotation shaft 33 does not come into direct contact with the finish plate 13 and can reduce friction during rotation by the bearing. In this configuration, the rotor rotates while making contact with the inner surface of the inner cylinder.

Figure 3 is an exploded perspective view showing the embodiment as in Figure 2, Figure 4 is a perspective side view showing the embodiment as in Figure 2, Figure 5 is a piping configuration for supplying a pressure fluid to the pressure fluid inlet of an embodiment of the present invention This is a schematic diagram of the piping configuration.

The rotor is installed in a cylindrical rotor body 31 having a central axis coincident with the rotation shaft 33 and a vane guide groove 31a formed on the side of the rotor body, and the width protruding from the vane guide groove changes according to the rotational phase It is provided with a vane (35).

The casing also houses the rotor, and the vane end is inside it while holding the pressure fluid inside until the pressure fluid injected through the pressure fluid inlet 135, 155 of the casing is discharged through the pressure fluid outlet 133m 153. A cylindrical inner cylinder 20 is further provided so as to be in contact with the side surface (inner wall surface) so that the rotation center position within the casing is spaced apart from the rotation shaft 33 but can rotate together when the rotor rotates.

The inner cylinder 20 is placed on the plurality of rolling means 19 of the recess 119 installed in the inner wall of the casing body 11 when installed. Here, the rolling means consists of a rolling stand and a roller, and the rolling stand may be formed in a cylindrical shape or a rotational shaft form, and is installed to be rotatably parallel to the rotation shaft 33 and the inner cylinder 20 rotates within the casing body 11 , the inner cylinder The rolling bar in contact with the outer surface rotates to prevent sliding friction between the inner cylinder 20 and the inner wall of the casing body 11 due to rotation of the inner cylinder.

The vane guide groove 31a may be formed in various other shapes as needed. In this embodiment, a plurality of vane guide grooves 31a are installed parallel to each other along the longitudinal direction at the portion forming the cylindrical side surface of the rotor body 31, and when viewed in the longitudinal direction, the same in the circle formed by the cylindrical rotor body. They are installed at the same circumferential angle or at the same circumferential distance. The vanes 35 moving outward and inward along the vane guide grooves 31a are made of a substantially rectangular plate. Depending on the angle at which the vane guide groove 31a is installed in the rotor body 31, the vane 35 may also be formed vertically from the side of the cylindrical rotor body 31, but here it is inclined to have a certain angle with the vertical plane. protrude That is, it has a certain angle with the radial direction centered on the rotation shaft 33 and is slightly tilted in the direction in which the rotor rotates, and accordingly, the vane also protrudes from the side of the body to be slightly tilted in the direction of rotation based on the vertical direction. .

Here, the vane is installed to have a small gap in the groove 31a, and when the rotor rotates, it always tends to protrude outward according to the centrifugal force, but is limited by the inner wall surface of the inner cylinder 20, and the inner side of the inner cylinder 20 The wall exerts a force on the vane in the groove direction as the rotor rotates. Therefore, the vane 35 may move outward or inward along the groove while the rotor rotates even if an elastic body such as a spring is not installed in the groove.

Both ends of the finishing plates 13 and 15, the rotor body 31, and the vane 35 are preferably designed to have a fine gap in which it is possible to slide well with each other and the pressure fluid is difficult to leak.

In this embodiment, a portion of the periphery of the vane guide groove 31a in which the vane is installed in the rotor body 31 is formed in a different shape, unlike a conventional vane motor. That is, the rear inlet of the inlet forming the groove at both ends in the longitudinal direction of the vane guide groove 31a formed in the rotor body 31 is partially removed to form the extended portion 31b, and installed in the groove 31a in this portion The rear surface of the vane to be exposed is more exposed.

The curved surface of the rear portion of the groove entrance formed by the removed portion, that is, the curved surface of the expanded portion 31b, is concave when viewed from the entrance of the vane guide groove toward the inside of the vane guide groove and when the rotor body is viewed from the longitudinal end toward the center. have

In the perspective side view as shown in FIG. 4 as seen in the longitudinal direction of the rotation axis, the pressure fluid inlet 135 and the pressure fluid outlet 133 installed on the closing plate are installed to pass into the space inside the inner cylinder and outside the rotor body 31 . In particular, the pressure fluid inlet is made of three holes, and the pressure fluid outlet is made to have an approximately constant width along a curve similar to an arc.

The three holes forming the fluid inlet in each finish plate are arranged along a curved trajectory similar to the circumference of the finish plate. More precisely, when viewed from the side view of FIG. 4, the extension is arranged along the moving trajectory, and is limitedly installed at a position overlapping the extension installed on the rotor body behind the vane. In this case, the pressure fluid passing through the hole enters the partition space surrounded by the rotor body, the inner cylinder, and the rear surface of the vane through the expansion part.

The rotating rotor is illustrated for convenience so that the two extensions of the two adjacent division spaces overlap the frontmost one and the rearmost one among the three holes constituting the fluid inlet in the same phase as in FIG. 4 or at an instant. At this time, based on the rotor rotation direction, the extension of the rear division space and the rearmost first hole of the pressure fluid inlet are aligned, and the extension and the third hole of the front division space are aligned, so that the pressure of the fluid is simultaneously applied to each division space. is transmitted In this embodiment, the second hole is closed while in contact with one end face of the rotor, so that air is not transmitted.

The holes constituting the pressure fluid inlet do not necessarily have this arrangement, and although not simultaneously, as the rotor rotates, each extension may sequentially overlap the first hole, the second hole, and the third hole, and rather the simultaneous overlap It may be more desirable to avoid rotational stability of the rotor. Of course, in some embodiments, there are more holes forming the pressure fluid inlet, so that each extension of the rotor can receive the pressure fluid from more holes.

Looking at the action or operation of the components in the vane motor of this configuration, as the rotor rotates, the expanded portion 31b is aligned with the pressure fluid inlet 135 of the closing plates 13 and 15 as shown in FIG. 4 . When it comes to the position where the pressure fluid inlet 135, the fluid flowing with a strong pressure is introduced into the partition space riding on the concave surface of the expansion part 31b, and the pressure is applied while meeting the rear surface of the vane 35.

As the rotor rotates with fluid pressure, it enters a section where the inner wall surface of the rotor body 31 and the inner cylinder 20 is widened, and the vane end is in contact with the inner wall surface of the inner cylinder 20 by centrifugal force while maintaining the state in which the vane guide groove 31a continues. ) comes out more outward, and the separation space between the inner cylinder 20 and the rotor body 31 increases.

In this embodiment, the pressure fluid inlet is formed with three holes arranged along an approximately arc-shaped curved trajectory corresponding to a central angle of approximately 60 degrees, and the inner cylinder (20) ) and the partition space between the rotor body 31 is connected to the pressure fluid inlet, the partition space is filled with a pressure fluid to apply pressure to the rear surface of the vane. In addition, in this embodiment, as the rear surface of the vane is further exposed by the extension part 31b, the overall rotational force becomes larger.

In addition, in the separation space between the inner cylinder and the rotor body 31, the expansion part 31b first meets the pressure fluid inlet at a position where the gap between the rotor body 31 and the inner wall surface of the inner cylinder begins, and in this part, the rotor body and the The gap between the inner cylinder is very small, and the pressure fluid is injected and the high pressure is maintained, so that the rotational force can be efficiently transmitted even with a small amount of the pressure fluid.

When the rotor rotates, the extension that was aligned with the first hole (first hole) at the rear moves and aligns with the second hole (second hole). have. Similarly, when the rotor rotates further, the extension moves and aligns with the third hole (third hole), and the pressure fluid is supplied again from the third hole to increase the rotational force in the rotor. The pressure fluid introduced through each hole spreads to the partition space surrounded by the vane in front of the extension and the outer surface of the rotor and the inner cylinder, and continues to apply pressure to the vane, allowing the rotor to rotate due to the pressure difference between the front and rear ends of the vane.

Of course, here, since the inlets are formed on both the closing plates 13 and 15, the extended parts 31b are also formed on both ends of the rotor body. It is sufficient to form an extension only at the rear portion of the inlet.

5 schematically shows a configuration of a supply or supply pipe for supplying a pressure fluid to the pressure fluid inlet of the casing. Although not shown here, a recovery device or recovery pipe for recovering the fluid from the pressure fluid outlet of the casing may be shown in a similar form. However, since the pressure fluid outlet is integrated into one rather than divided into three holes, there will be a difference in this respect.

Referring to FIG. 5 , there is an integrated pipe 160 for supplying a high-pressure fluid from the outside at the fluid inlet 135 of the vane motor. This integrated pipe may be connected to a high-pressure fluid supply not shown. This integrated pipe 160 is branched midway, and the branched branch pipes 163 and 165 are directed to both pressure fluid inlets 135 and 155 in the two closing plates, and each branch pipe has three holes forming a fluid inlet. It is branched into three branch pipes to supply high-pressure fluid. Each branch pipe is provided with an opening/closing control means or an opening/closing valve 173, so that each branch pipe can be opened or closed or the inflow amount can be adjusted in some cases, thereby easily controlling the torque or output of the vane motor in multiple stages (step by step).

(Example 2)

Referring to the second embodiment of the vane motor of the present invention shown in Figures 6 to 7,

In this embodiment, the vane motor includes a casing forming the outermost shell and a rotor positioned within the casing, and except as specifically described herein, in general, the configuration of the existing casing and rotor may be similar to that of the existing casing.

For example, the casing includes a casing body 311 having a substantially cylindrical shape and finishing plates 313 and 315 for closing both ends of the casing body 311 in the longitudinal direction.

The rotor body 330 is formed in a cylindrical shape or a thick disk shape, and a vane guide groove 331a in which a vane is installed is formed on the side of the cylinder.

At least one of the finishing plates 313 and 315, here, a rotation shaft installation hole 351 through which the rotor rotation shaft is mounted or passed is installed. The rotating shaft may be integrally formed with the rotor.

Referring to FIG. 7 showing a state bisected by a plane perpendicular to the rotor axis of rotation, concave grooves are installed in a portion of the casing body 311 based on the cut surface, and when the two cut portions are in close contact, the concave grooves form a hole for pressure fluid inlet 355 and pressure fluid outlet 353 . Here, the pressure fluid inlet 355 into which the external high-pressure fluid is input is divided into four, and the pressure fluid outlet 353 is also divided into two.

Although not shown, a bearing is installed on the finish plate in which the rotation shaft installation hole is formed, so that the rotation shaft does not come into direct contact with the finish plate, and friction when rotating by the bearing can be reduced. In this configuration, the rotor rotates while in contact with the inner surface of the casing body 311 .

However, in the present invention, when viewed from a side cross-sectional view as shown in FIG. 7 , the vane 335 is formed in a thick plate shape having an arc shape, and the vane guide groove 331a is an arc shaped groove that can accommodate such a vane. is made of

In addition, the vane 335 is connected to a hinge shaft 339 installed in a part of the rotor body 330 by a link rod 337 installed on one side of the vane (the front side when considering the rotation direction), and this link rod It is rotatably coupled to the rotor body 330 by the 337 and the hinge shaft 339 .

The link rod 337 and the hinge shaft 339 may not be formed over the entire thickness of the rotor (the entire length in the rotational axis direction), but may be formed over a partial thickness, and here, one is formed in the middle in the rotational axis direction of the rotor. Of course, the link rod may be formed with a thinner thickness than the rotor thickness at one end of the rotor in the direction of the rotational axis at a position facing the finishing plate, and another link rod is installed at the other end in the direction of the rotational axis of the rotor so that the two are symmetrical at both ends in the direction of the rotational axis. In this case, the vane can be supported on the rotor for more stable reciprocating angular motion.

In addition, the link rod 337 is coupled to the upper end of the vane 335 (outermost relative to the rotational center axis of the rotor), and the hinge shaft 339 is installed on the surface layer (outer layer) of the rotor body 330 .

Therefore, here, when the vane 335 is maximally accommodated in the vane guide groove 331a, the link rod accommodating groove 331c is formed at one end with a minimum depth to facilitate installation, and the volume occupied by the link rod can be minimized. . However, it is preferable that the link rod receiving groove 331c has a little extra depth so that the link rod 337 does not directly collide with the rotor body 330 to generate vibration when the vane 335 moves, and the vane guide It is preferable that the groove 331a also has a little extra depth.

7, the position of the first inlet (first hole: 355a) where each vane first meets when considering the direction of rotation among the four pressure fluid inlets is the position of the vane completely in the vane guide groove when the rotor rotates ( Or at the maximum) after being accommodated, a space or a gap between the rotor and the inner surface of the casing body 311 starts to form, and the vane 335 may also be moved to a position where it can move outward.

In this case, as external pressure fluid flows into the partition space surrounded by the rear surface of the vane 335, the rotor body 330, and the inner surface of the casing, the partition space becomes high pressure, and the pressure fluid applies pressure to the rear surface of the vane. The vane 335 is pushed forward. So the rotor can rotate clockwise as seen here.

This partition space increases in volume as the vane 335 exits further to the outer side according to the rotation of the rotor and the gap between the rotor body and the inner surface of the casing body increases, and this partition space is in turn a second inlet (second hole: 355b), The pressure fluid may be continuously supplied while meeting the third inlet (third hole: 355c) and the fourth inlet (fourth hole: 355d). Accordingly, a considerable high pressure can be maintained despite the expansion of the compartment space, and the pressure of the high-pressure fluid inside the compartment space can continue to act on the rear surface of the vane, and a torque that turns the rotor clockwise can be applied.

After that, when the rotor rotates, this partition space is blocked at all fluid inlets, and the vanes are pushed out as far as possible and the internal pressure is reduced while having the maximum volume.

And, again, the vane is pushed against the inner wall surface to enter the vane guide groove 311a, and the volume of this division space is reduced. When the volume is reduced, the pressure of the partition space can be increased, but in the position, the pressure fluid is discharged by meeting the first outlet (353b) and the second outlet (353a) in turn, so the pressure can be lowered, and the vane is the maximum in the vane guide groove. is accepted as

Therefore, although it may vary somewhat depending on the positions of the pressure fluid inlet and the pressure fluid outlet and the volume expansion ratio of the partition space, in most cases, the maximum pressure acts on the partition space meeting the first inlet 355a, and the partition space in front is In turn, the pressure by the pressure fluid decreases in turn, and a torque for rotating the rotor clockwise is applied to each vane, and torque or output can be transmitted to the outside by the rotation shaft of the rotor.

Of course, here too, the torque or output of the vane motor can be easily adjusted in multiple stages by controlling the opening and closing of the branch pipes connected to the holes constituting the pressure fluid inlet in the same manner as in the first embodiment.

(Example 3)

In this embodiment, when compared roughly with the previous embodiments 1 and 2, the configuration of the rotor body and the vane has a basic commonality with Embodiment 2, and the installation of the inner cylinder and the pressure fluid inlet and outlet in the closing plate are implemented It has a basic similarity to Example 1.

8 and 9, the entire vane motor of this embodiment includes a casing 411a forming the outermost shell, a cylindrical inner cylinder 420 located in the casing, and a rotor installed in the inner cylinder 420. The casing has a substantially cylindrical casing body and end plates 413 and 415 for closing both ends in the longitudinal direction of the casing body, and each of the end plates 413 and 415 has a rotating shaft connected to the rotor ( A rotation shaft installation hole 451 through which 433 is mounted or passed, a pressure fluid inlet 455 consisting of three holes into which an external high-pressure fluid is input, and a pressure fluid outlet 453 through which the high-pressure fluid is discharged through the inside are disposed. The three holes 455a, 455b, and 455c constituting the pressure fluid inlet are in common with the holes of Example 1 in that they are arranged along multiple trajectories similar to arcs, but here the hole itself is not a simple circle, but a long arc shape along the trajectory. In particular, the rearmost hole is formed the longest.

In addition, the rotor body 430 is formed in a cylindrical shape or a thick disk shape, and a vane guide groove 431a in which a vane 435 is installed is formed on the side of the cylinder. When viewed from a perspective side view as shown in Fig. 9, the vane 435 is made of a thick plate having an arc shape, and the vane guide groove 431a is made of an arc-shaped groove capable of accommodating such a vane.

The vane 435 is connected to the hinge shaft 439 installed in a part of the rotor body 430 by a link rod 437 installed on one side of the vane (the front side when considering the rotation direction), and this link rod 437 ) and a hinge shaft 439 are rotatably coupled to the rotor body 430 . A link rod accommodating groove 431b is installed on the surface of the rotor body so that the link rod 437 can be accommodated therein.

In this embodiment, when viewed from a side cross-sectional view, the rotor body 430 is removed in a round or chamfered form at the inlet portion behind the vane among the inlets of the vane guide groove 431a to form a primary extension portion 431c, in particular, the rotor At both ends of the main body, secondary extension portions 431d are additionally installed to be more concave.

The three holes forming the fluid inlet in each closing plate are arranged along the trajectory of the movement of the extension when viewed from the side view, and the first hole (455a) installed at the rearmost side based on the rotational direction is formed in an arc shape and is long behind the vane. It is limitedly installed at a position that can overlap with the primary and secondary extensions 431c and 431d installed on the rotor body of the . While the first hole 455a and these extensions overlap with the rotation of the rotor, the pressure fluid passing through the first hole enters the separation space between the rotor and the inner cylinder through these extensions.

When the rotating rotor first passes through the partition space surrounded by the vane-rotor-inner cylinder at the rear of the rear part of the first hole 455a in the same phase as FIG. 9, the front part of the first hole is blocked from the front partition space. is showing At this time, the front second hole 455b and the third hole 455c show a state in which the pressure fluid is supplied to the further front division space.

Accordingly, when the rotor rotates, the first and second extensions of the rear partition space meet the rear first hole of the fluid inlet, and the fluid flows in and pressure is transmitted, and this partition space sequentially becomes the second hole and the third hole It also receives pressure fluid when it overlaps. In a section where the partition space is expanded as the rotor rotates, the pressure fluid flows into the inlet, and in the section where only the partition space is expanded without fluid inflow, in the section where the partition space is reduced again, the fluid is discharged through the pressure fluid outlet and The pressure is lower than that of the separation space into which the fluid is initially introduced, and the description of the operation in which the rotational force due to the pressure fluid acts on the vane by this pressure difference may be the same as the description of the previously made embodiments.

In the above, the present invention has been described through limited examples, but these are only illustratively described to help the understanding of the present invention, and the present invention is not limited to these specific examples.

Accordingly, those of ordinary skill in the art to which the present invention pertains will be able to make various changes or application examples based on the present invention, and it is natural that such modifications or application examples belong to the appended claims.

11, 311, 411a: casing body 13, 15, 313, 315, 413, 415: finish plate
17: bearing 19, 419: rolling means
20, 420: inner cylinder 31, 231, 330, 430: rotor body
31a, 231a, 331a, 431a: vane guide groove 31b, 331b, 431c, 431d: extended part
33, 233, 433: axis of rotation 35, 235, 335, 435: vane
135, 155, 253, 355, 455: pressure fluid inlet
133, 153, 255, 353, 453: pressure fluid outlet
160: integrated piping 163, 165: branch piping
171, 173: on/off valve 331c, 431b: link rod receiving groove
337, 437: link rod 339, 439: hinge shaft

Claims (6)

a casing having a pressure fluid inlet and a pressure fluid outlet into and out of the pressure fluid;
and a rotor configured to rotate about a rotation shaft mounted on the casing by receiving the pressure of the pressure fluid in the casing,
In the vane motor, the rotor has a cylindrical rotor body and a vane installed in a vane guide groove formed on a side surface of the rotor body and having a width protruding from the vane guide groove according to a rotational phase,
The pressure fluid inlet is provided with a plurality of holes spaced apart from each other so that the pressure fluid can be injected into the space between the casing and the rotor body according to the rotation of the rotor. The method of claim 1,
The casing is made in the form of a cylindrical closing container that closes both ends of a cylindrical outer cylinder (casing body) accommodating the rotor with a disk-shaped closing plate,
The pressure fluid inlet is installed in at least one of the closing plates, and the plurality of holes are sequentially connected to a partition space surrounded by the casing, the rotor body, and the rear surface of the vane according to the rotation of the rotor, so that the partition space A vane motor, characterized in that it is made to inject a pressure fluid into the. 3. The method of claim 2,
When viewed in the longitudinal direction of the rotation shaft, an extension is formed to further reveal the rear surface of the vane by partially removing the rear side based on the rotation direction of the rotor at the entrance of the vane guide groove coupling the rotor body and the vane and the plurality of holes are arranged along a partial section of the trajectory in which the extension part moves when the rotor rotates so as to overlap only the space in which the extension part is installed among the division spaces, and the rotor rotates so that the extension part is When it comes to a position overlapping the hole, the vane motor characterized in that the pressure fluid is introduced into the partition space from the pressure fluid inlet. The method of claim 1,
The casing is made in the form of a cylindrical closing container that closes both ends of a cylindrical outer cylinder (casing body) accommodating the rotor with a disk-shaped closing plate,
The pressure fluid inlet is installed in at least one of the closing plate,
Accommodating the rotor in the casing and holding the pressure fluid therein until the pressure fluid injected through the pressure fluid inlet is discharged through the pressure fluid outlet, the vane end is made to contact the inner surface so that the rotor rotates Further comprising a cylindrical inner cylinder that rotates together when doing but can be rotated at different rotational speeds,
The plurality of holes are sequentially connected to a partition space surrounded by the inner surface of the cylindrical inner cylinder, the outer surface of the rotor body, and the rear surface of the vane according to the rotation of the rotor to inject a pressure fluid into the partition space. A vane motor, characterized in that. The method of claim 1,
The casing is made in the form of a cylindrical closing container that closes both ends of the cylindrical outer cylinder accommodating the rotor with a disk-shaped closing plate,
The plurality of holes are arranged on a side surface of the cylindrical outer cylinder, and the plurality of holes are sequentially connected to a space surrounded by the inner surface of the cylindrical outer cylinder, the outer surface of the rotor body, and the rear surface of the vane according to the rotation of the rotor. A vane motor, characterized in that it is configured to inject a pressure fluid into the space. 6. The method according to any one of claims 1 to 5,
A plurality of pressure fluid flow paths respectively connected one by one to the plurality of holes constituting the pressure fluid inlet and an opening/closing control means formed separately for each flow path are provided to adjust the output or torque in stages (in multiple stages) through the opening/closing control means. A vane motor, characterized in that made to be possible.

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