WO1992013194A1

WO1992013194A1 - Multi-cylinder hydraulic device

Info

Publication number: WO1992013194A1
Application number: PCT/JP1992/000001
Authority: WO
Inventors: Shigeo Kanaya
Original assignee: Myotoku Ltd.
Priority date: 1991-01-17
Filing date: 1992-01-06
Publication date: 1992-08-06
Also published as: JP3339025B2; CN1065318A

Abstract

A multi-cylinder hydraulic device characterized by being constructed such that a unit for converting the stroke of a piston (22) into rotating motion or vice versa comprises: a member (33) having a loop-like groove (35) to encircle the central axial line and formed on a circular column so as to be in the shape of wave having appropriate cycles when developed; and a roller (32) located in a position projecting farther sideward than the piston rod (26) extending from said piston (22) and rotatably fitted in said groove.

Description

Specification

Multi-cylinder fluid system Technical field

The present invention relates to a plurality of cylinder fluid devices having a plurality of cylinders extending in the same direction and usable as, for example, a motor or a pump. Background art

Conventionally, a multi-cylinder fluid device of this type uses, for example, a swash plate or an oblique axis, but in any case, the stroke of the piston is short and the output is small, and the flow rate is reduced. However, there was a drawback that the number of samples decreased. In addition, such a conventional device is a single-acting type in which fluid flows in and out from only one side of the toner, and therefore, the output or the flow rate is reduced.

Conventionally, a multi-cylinder fluid device is used in which a valve portion is rotated by a stepping motor with a hydraulic motor or the like, an output shaft is driven by fluid pressure and stopped at a desired position, but an air motor is used. Because of the compressibility of the air, a stepping motor that rotates the valve part overnight was not used at all. Disclosure of the invention

One object of the present invention is that the overall size is small. Another object of the present invention is to provide a multi-cylinder fluid apparatus capable of obtaining a sufficient stroke.

Another object of the present invention is to provide a double-acting multi-cylinder fluid device for allowing fluid to flow in and out from both sides of a piston.

Still another object of the present invention is to provide a multi-cylinder fluid device capable of accurately stopping at a desired rotational position even in an air motor.

The present invention provides a cylinder block having a plurality of cylinders extending in the same direction, a valve member for controlling the flow of fluid into and out of each cylinder of the cylinder block, and A device for converting between stroke and rotational motion of the piston of the valve member, and a device for converting between the stroke and rotary motion of the valve member and the piston. Is a multi-cylinder fluid device that rotates relative to the cylinder block, wherein the device for converting between the stroke and the rotational motion of the piston is formed on a cylindrical surface. A grooved member having a loop-shaped groove surrounding the central axis so as to form a wave of an appropriate number of cycles when deployed, and further laterally than a piston rod extending from the piston. There is provided a plurality Siri Sunda fluid and wherein the including protruding rotatably disposed the roller with the groove.

The present invention also relates to such a multi-cylinder fluid device, wherein each cylinder flows fluid from both sides of the piston. Another object of the present invention is to provide a multi-cylinder fluid device used as a fluid pressure motor, which is capable of accurately stopping at a desired rotational position even in the case of an air motor. It is intended to provide a cylinder fluid device. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows an embodiment of the present invention and is a sectional view taken along line 11 in FIG.

Figure 2 is a side view.

FIG. 3 is a front view of the valve member.

FIG. 4 is a sectional view taken along line 414 in FIG. FIG. 5 is a sectional view taken along line 5-5 in FIG. FIG. 6 is a perspective view of the valve member.

FIG. 7 is a perspective view of the groove member.

FIG. 8 is a developed view showing the surface of the valve member and the groove member in an expanded manner.

FIG. 9 is a front view showing a cross section of a main part near a valve member according to another embodiment of the present invention, similarly to FIG.

FIG. 10 is a developed view showing the valve member and the groove member in a developed state.

FIG. 11 is a vertical sectional front view of a portion similar to FIG. 9 of another embodiment of the present invention, which is further different.

FIG. 12 shows still another embodiment of the present invention. FIG.

FIG. 13 is a side view showing still another embodiment of the present invention.

FIG. 14 is a cross-sectional view taken along a line 14-14 in FIG.

FIG. 15 is a front view showing a further different part of another embodiment of the present invention as a cross section in the same manner as FIG.

FIG. 16 is a front view showing the control valve in a state where the valve member is housed.

FIG. 17 is a cross-sectional view taken along the line 17-17 in FIG.

FIG. 18 is a cross-sectional view taken along the line 18-18 in FIG.

FIG. 19 is a cross-sectional view of the portion shown in FIG. 17 with the control valve stopped.

FIG. 20 is a cross-sectional view of the portion shown in FIG. 18 in the same state as in FIG.

FIG. 21 is a cross-sectional view showing a valve member, a control valve, and a cylinder orifice according to another embodiment of the present invention as a cross section at a certain position.

FIG. 22 is a longitudinal sectional view of a valve member and a control valve containing the valve member in the case of a single-acting type.

FIG. 23 is a partially cutaway front view of another embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

In the embodiment of the present invention shown in FIGS. 1 to 8, reference numeral 10 denotes a cylinder block in which, for example, a cylinder 12 comprising three or more holes extending in the same direction is formed. In this cylinder block, end members 16 and 17 are arranged at both ends of components indicated by 13 and 15 and are connected by a plurality of bolts 18 and 20. Reference numeral 21 denotes a hole formed so as to penetrate through the central parts of the constituent members 13 and 15 and the end face member 17 of the cylinder block 10. Reference numeral 2 2 denotes a piston which operates in each cylinder 12, a piston ring 23 is provided, and a hole 25 formed from an end surface 24 of the end of the cylinder 12. There is provided a piston rod 26 which allows the slidable. Reference numerals 27 and 28 denote holes formed so as to open toward the hole 21 from both ends of each cylinder 12. Reference numeral 30 denotes a long notch formed so as to open from each hole 25 to the hole 21. Reference numeral 31 denotes a shaft extending from the vicinity of the end opposite to the piston 22 of each piston rod 26 and extending through a long notch 30 so that the roller 32 is rotatably mounted. I have.

Reference numeral 3 3 denotes a groove member for converting the stroke and rotation of each piston 22 into mutual rotation, and is rotatable in close contact with the inner surface of the hole 21 via the bearing 34 on the cylinder block 10. When the outer surface is cylindrical and unfolded, it forms a one-cycle wavy loop, and a groove 35 is formed so as to surround the central axis of the groove member 33. When the groove 35 is unfolded, for example, it may be formed in a triangular waveform or a sine waveform, or When the shape of the cut surface, which can be obtained when the cylindrical surface is cut obliquely in a plane as in the embodiment, becomes one cycle of a wavy shape, such a shape may be used.

Reference numerals 36 and 37 denote a first connection port and a second connection port through which the fluid formed in the cylinder block 10 flows in and out, respectively, which are separated from each other via flow paths 38 and 39, respectively. At the position into the hole 21.

Reference numeral 41 denotes a valve member closely rotatably disposed in the hole 21. The valve member is engaged with the groove member 33 by an engaging portion 42 so as to be integrally rotatable. In the hole 21, spaces 43, 44 communicating with the flow paths 38, 39 are formed at both ends of the valve member 41, respectively. Reference numerals 45 and 46 denote flow paths formed so as to extend a predetermined length so as not to reach the other end from the both ends of the valve member 41, and communicate with the spaces 43 and 44, respectively. become. 47a and 47b are communicated with the flow path 45 so that when the groove member 33 and the cylinder block 10 rotate relative to each other, they are centered so that they can pass through the positions of the holes 27 and 28, respectively. It is a first communicating portion formed in an arc-shaped groove in an angle range slightly smaller than 180 degrees with an interval of 180 degrees around the axis. 48a and 48b are connected to the flow path 46 in the same manner so that they can pass through the positions of the holes 27 and 28 at 180 degrees around the center axis. The second communication portion is formed in an arc-shaped groove in a slightly smaller angle range. The first communication part 47a and the second communication part 48a are formed symmetrically with each other via the closing part 49, and are connected to the first communication part 47b and the second communication part. The part 48 b is formed symmetrically with respect to each other via the closing part 49. 50 is a packing that seals the parts that need to be airtight. Numeral 51 denotes a shaft formed at the outer end of the groove member 33. Referring to FIG. 8, the groove member 33 and the valve member 4

The development view of FIG. 1 shows portions of the same rotation angle arranged side by side, and shows the positions of the holes 27 and 28 and the roller 32 in a state of being superimposed on the parentheses and the like. In this figure, when the groove 35 is in the state shown in the figure, the first communication parts 47a, 47b and the second communication parts 48a, 48b need to be formed as shown in the figure. Understand by explanation. The holes 27, 28 and the roller 32 are indicated as 27A, 27B, 27C, etc. by adding A, B, C each time the cylinder 12 is different. . The following describes a case in which the cylinder block 10 that supplies compressed air from the first connection port 36 and exhausts air from the second connection port 37 stops and the groove member 33 and the valve member 41 rotate. . In this case, the first communication portions 47a and 47b are in communication with the first connection □ 36, and the second communication portions 48a and 48b are in communication with the second connection portion 37.

When rotating the groove member 3 3 and the valve member 41 in the direction of the arrow, each piston 22 having the opening rollers 32 A and 32 C moves in the direction of the arrow shown in the figure, and the piston having the roller 32 B. Ton 22 must be immobile. In order to do this, the piston 22 having the roller 32A needs to be supplied with compressed air from the right side of FIG. Pistons must be supplied with compressed air from the left. Therefore, the hole 27A communicates with the second communication part 48a, the hole 28A communicates with the first communication part 47b, and the hole 27C communicates with the first communication part 47. a, the hole 28C communicates with the second communication portion 48b, and the hole 27B and the hole 28B are almost closed by the closing portion 49. a, the second communication part 48a, the first communication part 47b, and the second communication part 48b. Therefore, a desired operation can be obtained in such a state, and the shaft portion 51 can be rotated in the same manner. When compressed air is supplied from the second connection port 37 and exhausted from the first connection port 36, the rotation direction of the shaft 51 is reversed. When such a groove member 33 is developed and shown, a groove 35 having one cycle can achieve particularly smooth operation.

The same applies to a motor in which the working fluid is a liquid. In the case of a pump, the fluid can be flowed in and out by rotating the shaft 51. For example, when the shaft 51 is driven so as to rotate in the direction of the arrow in FIG. 8, the fluid flows in from the first connection port 36 and flows out from the second connection port 37. When the shaft 51 is rotated in the opposite direction, the direction in which the fluid flows in and out is also reversed. In a device having a groove 35 that develops from this figure into one cycle, a closed portion 49 is formed in the valve member 41 at an angular position about the center axis of the dead center where the piston 22 reaches both ends, The first communication part and the second communication part are shown at the part where the holes 27 and 28 pass adjacently between the dead points, respectively. It can be understood that it should be formed as follows.

In the above-mentioned embodiment, a hole communicating with the outside may be formed in the end face member 17 which is an end of the hole 25 in which the piston rod 26 moves, if necessary.

In another embodiment of the present invention shown in FIGS.

A groove member 33 having four-cycle triangular-wave grooves 35 is used. In this case, every four first communication portions 47a and second communication portions 48 that relatively pass along the holes 27 communicating with the first connection port 36 and the second connection port 37, respectively. a are alternately arranged, and four first communication portions 47 b and second communication portions 48 b which pass relatively along the hole 28 are similarly required. For this reason, a pair of identical annular members that are recessed in a groove shape in the opposite direction from the left and right, which are rotatable close to each other in the hole 21 with a predetermined thickness as shown A raised portion 52 is formed, and as shown in the drawing, the first connecting portion 36 can communicate with the central portion of the raised portion 52 on both sides via a flow path 38, and a second connecting port 37 is formed. The bulge 52 communicates with the outside of each protruding portion 52 via a flow path 39, and each protruding portion 52 forms a communication portion indicated by a dotted line as shown in the figure. With this configuration, the piston 22 repeatedly reciprocates during one rotation, and the stroke as a whole increases. In this example, a test was performed with an air motor that rotates the groove member 33 and the valve member at the same time. As a result, it was found that each piston 22 stopped for a short time each time it reached the dead point and then rotated again. Therefore, it is convenient to use such an operation. FIG. 11 is a modification of the above-described embodiment shown in FIGS. 9 and 10, and has the same configuration as that in which the valve member is rotated in the conventional stepping mode. That is, the valve member 41 is completely separated from the groove member 33, and is rotated by a driving device 55 such as a stepping motor. This rotation speed needs to be a rotation speed at which the groove member 33 can follow. When the valve member 41 rotates in the direction in which the groove member 33 can rotate, the groove member 33 rotates in the same direction while maintaining the relationship substantially as shown in FIG. In the case of a certain air motor, when the valve member 41 stops, some pistons 22 stop when they reach the next dead center. For example, as shown in the figure, when the groove member 33 is unfolded and has four cycles of wavy grooves 35 and there are three cylinders 12, the number of dead points during one rotation is 2 4 Times, and can be stopped every 15 degrees. In addition, when the groove members 33 are the same and there are five cylinders 12, it can be stopped every 9 degrees. Therefore, it is particularly suitable for such a stop.

In another embodiment of the present invention shown in FIG. 12, a groove member 33 and a valve member 41 in the embodiment shown in FIGS. 1 to 8 are fixed to a base 56 so as not to rotate. Yes, the cylinder block 10 was changed to rotate. The first connection port 36 and the second connection hole 37 are formed in a portion protruding outside the valve member 41, and are respectively the same as those in the embodiment shown in FIGS. Communication with flow paths 4 5 and 4 6 Let me do it. Reference numeral 57 denotes a power transmission section composed of a pulley or the like, which may be changed to another means such as a gear.

In another embodiment of the present invention shown in FIGS. 13 and 14, a groove member 33 and a valve member 41 are integrally formed to form a cylindrical joint body 60, and both ends are formed as end face members 61. , 62. On the inner surface of this groove member, for example, one cycle of a wavy groove 35 is formed when it is unfolded, and the valve member 41 has a first communication portion 47a, 47b and a second communication portion. Portions 48a and 48b are formed in groove-like recesses from the inner surface side, and are not shown in detail, but communicate with the first connection port 36 and the second connection port 37, respectively. . When the inner surface of the combined body 60 is developed, it is similar to that shown in FIG. The cylinder block 10 is rotatable in close contact with the inner surface of the combined body 60, and is composed of a main body 63 and an end plate 65, and the shaft 51 is outside the main body 63. It is projected to the direction. In other respects, the same parts as those in the above embodiments are denoted by the same reference numerals. In this embodiment, a case is shown in which the coupling body 60 is fixed and the cylinder block 10 rotates. This embodiment may be modified slightly so that the cylinder block 10 is fixed and the coupling body 60 is rotated, in which case the first connection port 36 and the first connection port 36 are rotated. (2) A cover may be provided to cover each of the connection ports 37 in an annular manner via the annular space, and another connection port for inflow and outflow from outside may be provided in the cover.

In another embodiment of the present invention shown in FIGS. 15 to 20, in the case of the motor of the device of the present invention, the embodiment shown in FIGS. It is modified so that it can be stopped at an arbitrary rotation angle. In this figure, the same parts as those of the above embodiment are denoted by the same reference numerals. The valve member 41 has a connecting portion 67 extending axially, which is fitted into the groove member 33 and fixed by a pin 68 so that it can rotate integrally. Reference numeral 70 denotes a control valve closely fitted to the outside of the valve member 41 and rotatably fitted to the valve member. The outside is closely contacted with the inner surface of the hole 21, and the control valve is provided on the outer surface of the valve member 41, respectively. The first communication part 47a, the second communication part 48a, and the first communication part 47b and the second communication part 48b are each 180 degrees outside of the position where they pass while rotating. A communication portion 71 composed of two concave grooves is formed symmetrically in a slightly smaller angle range, and a slight blocking portion 72 is formed between the communication portions. A hole 73 penetrating therethrough is formed near the center of each communication portion 71, and this hole is formed in such a size as to be closed when it overlaps with the closing portion 49 of the valve member 41. The control valve 70 is connected to a shaft 75 of a driving device 55 such as a stepping motor by a pin 76.

In the embodiment shown in FIGS. 15 to 20, a case is considered in which fluid is supplied from the first connection port 36 and fluid is discharged from the second connection port 37. The drive valve 55 allows the control valve 70 to rotate the valve member 41 within a speed at which the connected body of the valve member 41 and the groove member 33 can follow the arrow. When rotated in the direction, each of the first communication portions 47a and 47b and the second communication portions 48a and 48b The valve member 41 and the like rotate while maintaining the state communicating with the communication portion 71. This phenomenon is caused by the fact that even if the valve member 41 or the like tries to rotate faster than the control valve 70, the rotation speed decreases when a part of the hole 73 becomes blocked by the blocking portion 49. Not only can this not be exceeded, but also the respective communicating portions of the valve member 41 are connected to the groove members 33 similar to those shown in FIG. 8 through the communicating portions 71 of the control valve 70. This is because the relationship with the groove 35 is maintained. Next, when the control valve 70 is stopped, the valve member 41 loses fluid flow when the hole 73 comes to a position where the hole 73 is closed by the closing portion 49 as shown in FIGS. It will stop. If the valve member 41 stops beyond this state due to inertia, the connected body of the valve member 41 and the groove member 33 receives the rotational force in the opposite direction, and the state shown in FIGS. Will stop. Therefore, the connected body of the valve member 41 and the groove member 33 rotates exactly the same as the control valve 70 and stops accurately.

In another embodiment of the invention shown in FIG. 21 which is still different, the cylinder block 10 described in connection with the embodiment shown in FIGS. 13 and 14 is stationary, and Sectional cross-sectional view of a part where a control valve 70 is provided as in the embodiment shown in FIGS. 1.5 to 20 in a case where a combined body 60 of the groove member 33 and the valve member 41 rotates. Is shown. In this case, the control valve 70 may be externally rotated via, for example, a gear or a timing belt, as shown in FIGS. 15 to 20. There is an operation similar to that of the embodiment. That is, the control valve 70 is a cylindrical member rotatably disposed adjacent to the space between the valve member 41 and the cylinder block 10, and the first communication portion 47 a of the valve member 41 is provided. The same number of communication parts 71 as the number of second communication parts 48 a etc. are formed on the cylinder block 10 side with a slight blocking part 72, and each communication part A through hole 73 is formed in the center of 71, and each hole 73 is simultaneously closed when overlapping with the closing portion 49 of the valve member 41. This point can be applied even if a plurality of cycles of the grooves 35 are formed in the groove member 33.

In each of the embodiments described above, each cylinder 12 of the cylinder block 10 is of a double-acting type in which fluid flows in and out from both sides of the piston 22. In some cases, it may be a single-acting type that allows fluid to flow in and out from only one side. In order to achieve this, for example, in the embodiment shown in FIGS. 1 to 8, a hole communicating with the outside from the inside of the cylinder 12 near the end face portion 24 without providing the hole 28 in the cylinder 12. May be opened, and the first communication part 47 b and the second communication part 48 b of the valve member 41 may not be provided.

For example, when the control valve 70 is used, the control valve 70 and the valve member 41 may be configured as shown in FIG.

In the present invention, a single-acting type using the control valve 70 can be applied to a conventional swash plate type, and an air motor can be stopped accurately at a desired rotational position. That is what you get.

In each of the above-described embodiments in which the drive member 55 is used to rotate the valve member 41 and the control valve 70 as shown in FIG. 11, other than the stepping motor as the drive device, Various types of motors driven by ordinary electricity may be used, or the motor may be configured to be rotated manually. As shown in FIG. 23, a plurality of cylinders such as an air motor according to the present invention are provided.

1

A handle 80 may be provided from the soldering device 90 via a flexible hose 78 internally having a rope 77, and the handle may be rotated. Alternatively, a stepping motor may be provided instead of the handle. Although not shown, a hose for supplying compressed air is also required. This embodiment is convenient for use in places where workers cannot access.

Industrial applicability

As described above, according to the present invention, in a multiple-cylinder fluid device, the stroke of the piston can be remarkably increased, and the fluid can easily enter and exit from both sides of the piston. You can do it. The one using the groove member 33 having the groove 35 which becomes one cycle when further developed can operate extremely smoothly. Further, the motor using the control valve 70 can be reliably stopped at a desired rotational position, which has never been provided before. Furthermore, in the case of the fan motor according to the present invention, the conventional structure is difficult by rotating the valve member 41 separated from the groove member 33 having a plurality of cycles of the grooves 35. Even an air motor, which was difficult, can be stopped at almost the desired position.

Claims

The scope of the claims

1. A cylinder block having a plurality of cylinders extending in the same direction, a valve member for controlling the flow of fluid into and out of each cylinder of the cylinder block, and the inside of each of the cylinders A device for converting between the stroke and the rotational motion of the piston at the valve, and a device for converting between the stroke and the rotary motion of the valve member and the piston. A multi-cylinder fluid device that rotates relative to the cylinder block, wherein the device that converts between the piston's spoke and the rotary motion is a cylinder. A groove member having a loop-shaped groove surrounding a central axis which is formed into a wave shape having an appropriate number of cycles when unfolded, and a piston rod extending from the piston. Sideways Multiple Siri Sunda fluid and wherein the this include protruding rotatably arranged with rows La in the groove.

2. The apparatus according to claim 1, wherein the groove member is cylindrical, the groove is formed from a surface to an inner surface, and the cylinder block includes a valve member and a valve member. A multi-cylinder fluid device characterized by being relatively rotatable surrounding a groove member.

3. The apparatus according to claim 1, wherein the groove member is a cylindrical member having a cylindrical hole inside, and the groove is formed from an inner surface of the hole outward. The valve member is integrated with the groove member and is formed in a cylindrical shape, and the cylinder opening is formed inside the valve member and the groove member. A multi-cylinder fluid device characterized by being rotatable counterclockwise.

4. The device according to claim 1, 2 or 3, wherein the groove formed in the groove member has a waveform of one cycle when expanded. Equipment.

5. The device according to claim 1, 12, 3, or 4.

8

In the multi-cylinder fluid device, the cylinder and the valve member allow fluid to flow in and out from both sides of the piston through holes formed on both sides of the cylinder.

6. The apparatus according to claim 5, wherein the valve member has a groove which is relatively rotated with respect to both sides of a hole through which fluid flows into and out of each cylinder. The first communication part and the second communication part, which are composed of the same number of recesses as the number of cycles, are alternately opposite to the part corresponding to the other hole, and have the same length. The first communication portion and the second communication portion are respectively connected to a first connection port and a second connection port through which a fluid flows in or out, and the blocking portions are respectively formed. A multi-cylinder fluid device characterized by being arranged at an angular position of each dead center of a piston based on a groove of a groove member.

7. The multi-cylinder fluid device according to claim 1, 2, 3, 4, 5, or 6, wherein the device is a motor operated by fluid pressure.

8. Claims 1, 2, 3, 4, 5 or 6 A multi-cylinder fluid device, wherein the device is a fluid pump.

9. The apparatus according to claim 7, wherein the groove member has a plurality of cycles of a wave shape when unfolded, and the valve member is separated from the groove member and rotated from the outside. A multi-cylinder fluid characterized by

10. A device for use as a fluid pressure motor according to claim 6, wherein the valve member and the cylinder block are rotatably operated by an external device between the valve member and the cylinder block. The control valve is provided with a first communication portion and a second communication portion of a valve member at portions that rotate adjacent to holes on both sides through which fluid flows into and out of the cylinder of the cylinder block. The number of communicating parts equal to the total number of communicating parts is formed in a concave groove shape with a slight closing part at equal intervals from each other. Multi-cylinder fluid characterized by containing

11. A cylinder block having a plurality of cylinders extending in the same direction, and a valve member for allowing a fluid to flow into and out of one side of the cylinder into each cylinder of the cylinder block. A device for converting between the stroke and the rotation of the piston in each of the cylinders, and the device for performing the conversion between the stroke and the rotation of the valve member and the piston. The device for conversion between them rotates with respect to the cylinder A plurality of cylinder fluid devices for use as a fluid pressure motor, wherein the valve member has a cylindrical surface portion passing toward a hole communicating with each cylinder of the cylinder block. The first communication portion and the second communication portion communicating with the first connection port and the second connection port through which the fluid flows in or out, respectively, are symmetrically recessed through a slight closing portion, and A control valve is provided between the valve member and the cylinder block so as to be rotatable from the outside, and the control valve rotates adjacent to the hole for fluid to enter and exit the cylinder of the cylinder block. Two communicating portions formed in a concave groove shape with a slight closing portion at equal intervals from each other, and a hole that penetrates the center of each communicating portion and is closed when overlapping with the closing portion of the valve member. To include Characteristic multiple cylinder fluid

12. The multi-cylinder fluid device according to claim 10 or 11, further comprising a stepping motor for rotating the control valve.

Amended claims

[May 5, 1992 (05.05.92) Accepted by the International Bureau; claims 1,4,5,7,8,11 and 12 at the time of filing were captured; new claims 13 and 14 were Joined the. (Page 5)]

1. (After correction) A cylinder block having a plurality of cylinders extending in the same direction, and rotating relative to the cylinder block to allow fluid to flow into and out of each cylinder. What is claimed is: 1. A multi-cylinder fluid device comprising: a valve member to be controlled; and a device for converting between movement and rotation of a piston in each of the cylinders. A device for converting between rolling motion and surrounding motion surrounds a central axis formed on a cylindrical surface that rotates relatively to the cylinder opening so as to have a certain number of cycles when developed. A groove member having a loop-shaped groove; and a roller protruding laterally from a piston rod extending from the piston and rotatably disposed in the groove. Fluid device.

2. The device according to claim 1, wherein the groove member is cylindrical, the groove is formed from a surface to an inner surface, and the cylinder block is a valve member and a groove. A multi-cylinder fluid device characterized by being relatively rotatable around materials.

3. The apparatus according to claim 1, wherein the groove member is a cylindrical member having a cylindrical hole inside, and the groove is formed from an inner surface of the hole outward. The valve member is integrated with the groove member and formed in a cylindrical shape, and the cylinder block is rotatable relative to the inside of the valve member and the groove member. Multiple cylinders Da fluid device.

4. (After correction) The apparatus according to claim 1, wherein the groove formed in the groove member has a waveform of one cycle when unfolded. Δ device.

5. The device according to claim 1, wherein the cylinder and the valve member allow fluid to flow in and out from both sides of the piston through holes formed in the cylinder. A multi-cylinder fluid device characterized in that:

6. The apparatus according to claim 5, wherein the valve member has a groove which is relatively rotated with respect to both sides of a hole through which fluid flows into and out of each cylinder. The first communication part and the second communication part, which are composed of the same number of recesses as the number of cycles, are alternately and mutually opposite to the part corresponding to the other hole. The first communication portion and the second communication portion are respectively connected to a first connection port and a second connection port through which fluid flows in or out, and the first communication portion and the second communication portion are connected to a first connection port and a second connection port through which fluid flows in and out, respectively. A plurality of cylinder fluid devices, each of which is disposed at an angular position of each dead center of the piston based on the groove of the groove member. .

(After correction) The multi-cylinder fluid device according to claim 1, wherein the device is a motor operated by fluid pressure.

8. (After correction) The device according to claim 1, wherein the device is a fluid pump. Linda fluid device.

10. The fluid motor according to claim 6 and

Two

3, a cylindrical control valve is provided between the valve member and the cylinder block so as to be rotatable by being operated from the outside, and the control valve is a cylinder block. In the rotating part adjacent to the holes on both sides through which fluid flows into and out of the cylinder of the cylinder, the number of valves is equal to the total number of the first and second communication parts of the valve member, and they are slightly closed at equal intervals. A plurality of cylinders, each of which includes a communication part formed in a concave groove shape through the part, and a hole that penetrates the center part of each communication part and is closed when overlapping with the closing part of the valve member. Fluid

1. After correction (after correction), a cylinder block having a plurality of cylinders extending in the same direction, and rotating relative to the cylinder block, are inserted into one of the cylinders from one side of the cylinder. A valve member for allowing a fluid to flow in and out, and a device for rotating between a cylinder motion and a rotational motion in each cylinder by rotating relative to the cylinder port. A multi-cylinder fluid device used as a fluid pressure motor, wherein the valve member is provided in each cylinder of the cylinder block. The first and second communication parts that communicate with the first and second connection ports, respectively, through which fluid flows in and out of the cylindrical surface passing through the hole leading to the cylinder, are slightly closed. A control pulp that is rotatably disposed from the outside in close contact between the valve member and the cylinder block, and the control valve is a cylinder block. Two communicating parts formed in concave grooves at equal intervals from each other in the rotating part adjacent to the hole through which the fluid flows in and out of the cylinder, And a hole that penetrates a central portion and is closed when overlapping with the closing portion of the valve member.

12. The device according to claim 10, wherein (after the correction), a stepping motor for rotating the control valve is provided.

13. (Addition) A plurality of relatively fixed cylinders extending in the same direction, and a valve that controls rotation of each cylinder relative to each cylinder to allow fluid to flow into and out of each cylinder. A plurality of cylinder fluid devices comprising: a piston member; and a device for performing a conversion between a piston motion and a rotary motion in each of the cylinders. The device that converts between the two is a loop-shaped groove formed on a cylindrical surface that rotates relatively to each cylinder, and that surrounds the central axis line that has a certain number of cycles when expanded. And a member that projects laterally from a piston rod extending from the piston and is disposed in the groove. Features a multi-cylinder fluid device.

14. (Addition) The apparatus according to claim 13, wherein the member that projects laterally from the piston rod and is disposed in the groove is rotatably mounted on the piston rod. Multi-cylinder fluid device characterized by comprising δ