EP1225344A1 - Fluidic device - Google Patents
Fluidic device Download PDFInfo
- Publication number
- EP1225344A1 EP1225344A1 EP01101289A EP01101289A EP1225344A1 EP 1225344 A1 EP1225344 A1 EP 1225344A1 EP 01101289 A EP01101289 A EP 01101289A EP 01101289 A EP01101289 A EP 01101289A EP 1225344 A1 EP1225344 A1 EP 1225344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal body
- passage
- fluid
- channels
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 57
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- UUTKICFRNVKFRG-WDSKDSINSA-N (4R)-3-[oxo-[(2S)-5-oxo-2-pyrrolidinyl]methyl]-4-thiazolidinecarboxylic acid Chemical compound OC(=O)[C@@H]1CSCN1C(=O)[C@H]1NC(=O)CC1 UUTKICFRNVKFRG-WDSKDSINSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0807—Manifolds
- F15B13/0814—Monoblock manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0871—Channels for fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0878—Assembly of modular units
- F15B13/0885—Assembly of modular units using valves combined with other components
- F15B13/0892—Valves combined with fluid components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0878—Assembly of modular units
- F15B13/0896—Assembly of modular units using different types or sizes of valves
Definitions
- the present invention relates to a fluidic device comprising a plurality of fluidic modules, and a passage block to which the plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages for communicating the plurality of fluidic modules with one another.
- a device as shown in Figs. 9, 10 and 11 is known as a background-art fluidic device.
- the device comprises a plurality of fluidic modules such as a fluid pump not shown, a tank not shown, a fluid-controlled valve 11 and an actuator 12, and a passage block 13 to which the fluid pump, the tank, the fluid-controlled valve 11, and the actuator are attached.
- the passage block 13 is provided, in its inside, with four fluid passages.
- a feed passage 14 for connecting the fluid pump and the fluid-controlled valve 11 to each other
- an exhaust passage 15 for connecting the tank and the fluid-controlled valve 11 to each other
- a head-site feed and exhaust passage 17 for connecting the fluid-controlled valve 11 and a head-site chamber 16 of the actuator 12 to each other
- a rod-site feed and exhaust chamber 19 for connecting the fluid-controlled valve 11 and a rod-site chamber 18 of the actuator 12 to each other.
- the feed passage 14, the exhaust passage 15 and the feed and exhaust passages 17 and 19 are bent meanderingly because both ends of each passage is generally not on one and the same axis.
- the passage 19 is bent three times because the passage 19 has a first passage portion 19a extending downward from an upper surface of the passage block 13, a second passage portion 19b extending backward from a lower end of the first passage portion 19a, a third passage portion 19c extending leftward from an intermediate portion of the second passage portion 19b, and a fourth passage portion 19d extending downward from an intermediate portion of the third passage portion 19c.
- an opening end of an intermediately located passage portion such as the second passage portion 19b is closed by a plug 23 which has, as shown in Fig. 12, a body 20 inserted from its forward end side into the opening end portion of the second passage portion 19b, a hole 21 formed in the body 20, and a plug 22 implanted in the hole 21 to widen the diameter of a rear end portion of the body 20.
- each fluid passage needs passage portions of the number obtained by addition of one to the number of bends.
- the fluid passage needs four passage portions (straight holes).
- the cost of the resulting device is increased because a troublesome drilling process is required as well as the structure of the device is complicated.
- the opening end portion of each intermediate passage portion (straight hole) must be processed with sufficiently high accuracy to be closed by the aforementioned plug 23. As a result, there is also a problem that the cost of the device is increased more greatly.
- An object of the present invention is to provide a fluidic device which is simple in structure and which can be produced inexpensively.
- a fluidic device comprising a plurality of fluidic modules, and a passage block to which the plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages for communicating the plurality of fluidic modules to one another, wherein: a space is formed in the passage block; and an internal body is received in the space liquid-tightly, channels being formed in an outer surface of the internal body so that the channels form part of the fluid passages.
- the fluid passages are partially formed by the channels formed in the internal body. Since such channels are formed in the outer surface of the internal body, the work for forming the channels becomes so easy that the resulting device can be produced inexpensively as well as the channels becomes simple in structure compared with a plurality of straight drill holes. Moreover, a process of closing each opening end with a plug and a process of chamfering each bending portion become needless, so that the resulting device can be produced more inexpensively. Incidentally, since the internal body is received in the space so liquid-tightly that the channels are sealed securely individually, there is no fluid leakage.
- the internal body can be positioned easily with sufficiently high accuracy.
- the reference numeral 26 designates a passage block shaped like a rectangular parallelopiped.
- a fluid-controlled valve 27 as a fluidic module is attached to an upper surface of the passage block 26.
- a fluid pump and a tank as fluidic modules not shown are connected to left and right ends, respectively, of the passage block 26 through pipe conduits (not shown).
- an actuator 28 for aircraft spoiler as a fluid module is attached to a lower surface of the passage block 26.
- the actuator 28 has a casing 29 extending back and forth, a piston 31 slidably received in the casing 29 for partitioning a cylinder chamber 30 in the casing 29 into a head-site chamber 30a and a rod-site chamber 30b, and a piston rod 32 integrally attached to the piston 31 and passing through a rear end wall of the casing 29. In this manner, a plurality of fluidic modules are attached to the passage block 26.
- a columnar space 35 is formed in a central portion of the passage block 26 so as to extend back and forth while passing through the passage block 26.
- a solid columnar internal body 36 having the same diameter as that of the space 35 is received in the space 35.
- First, second and third channels 37, 38 and 39 which do not cross one another, are formed in an outer surface of the internal body 36, that is, in a circumferential surface of the internal body 36 in this embodiment.
- the first, second and third channels 37, 38 and 39 are rectangular in sectional view and approximately equal in depth to one another.
- the space 35 and the internal body 36 are constituted by a columnar space and a column respectively and the first, second and third channels 37, 38 and 39 are formed in the circumferential surface of the internal body 36 in the aforementioned manner, the work for forming the space 35, the internal body 36 and the channels 37, 38 and 39 becomes easy.
- the first channel 37 has a first axial portion 37a extending axially backward from a front end portion of the internal body 36, and a first circumferential portion 37b extending circumferentially by about a quarter circuit from a rear end of the first axial portion 37a.
- the reference numeral 41 designates a first feed passage portion formed in the passage block 26. One end of the first feed passage portion 41 is connected to the pipe conduit of the fluid pump. The other end of the first feed passage portion 41 communicates with one end of the first channel 37, that is, with a front end of the first axial portion 37a. Further, a second feed passage portion 42 is formed in the passage block 26.
- One end of the second feed passage portion 42 communicates with the other end of the first channel 37, that is, with a backward end of the first circumferential portion 37b.
- the other end of the second feed passage portion 42 is connected to the fluid-controlled valve 27.
- the foregoing first and second feed passage portions 41 and 42 and the first channel 37, which are provided in the passage block 26, entirely constitute a feed passage 43 which serves as a fluid passage for connecting the fluid pump and the fluid-controlled valve 27 to each other.
- the second channel 38 has a second axial portion 38a extending axially backward from a front end portion of the internal body 36 so as to be at a distance of an about half circuit from the front end of the first axil portion 37a, and a second circumferential portion 38b extending circumferentially by an about quarter circuit from a rear end of the second axial portion 38a toward the first circumferential portion 37b.
- the reference numeral 45 designates a first exhaust passage portion formed in the passage block 26. One end of the first exhaust passage portion 45 is connected to the pipe conduit of the tank. The other end of the first exhaust passage portion 45 communicates with one end of the second channel 38, that is, with a front end of the second axial portion 38a.
- a second exhaust passage portion 46 is formed in the passage block 26.
- One end of the second exhaust passage portion 46 communicates with the other end of the second channel 38, that is, with a backward end of the second circumferential portion 38b.
- the other end of the second exhaust passage portion 46 is connected to the fluid-controlled valve 27.
- the foregoing first and second exhaust.passage portions 45 and 46 and the second channel 38, which are provided in the passage block 26, entirely constitute an exhaust passage 47 which serves as a fluid passage for connecting the tank and the fluid-controlled valve 27 to each other.
- the third channel 39 has a third axial portion 39a extending axially backward from a position slightly in the rear of a midpoint between the backward ends of the first and second circumferential portions 37b and 38b, and a third circumferential portion 39b extending circumferentially by an about half circuit from a rear end of the third axial portion 39a in the same direction as the first circumferential portion 37b.
- the reference numeral 49 designates a first rod-site feed and exhaust passage portion formed in the passage block 26. One end of the first rod-site feed and exhaust passage portion 49 is connected to the fluid-controlled valve 27.
- the other end of the first rod-site feed and exhaust passage portion 49 communicates with one end of the third channel 39, that is, with a front end of the third axial portion 39a.
- a second rod-site feed and exhaust passage portion 50 is formed in the passage block 26.
- One end of the second rod-site feed and exhaust passage portion 50 communicates with the other end of the third channel 39, that is, with a backward end of the third circumferential portion 39b.
- the other end of the second rod-site feed and exhaust passage portion 50 is connected to the rod-site chamber 30b of the actuator 28.
- the plurality (four) of fluidic modules that is, the fluid pump, the tank, the fluid-controlled valve 27 and the actuator 28 are connected to one another by the fluid passages provided in the passage block 26, that is, the feed passage 43, the exhaust passage 47 and the rod-site feed and exhaust passage 51.
- the feed passage 43, the exhaust passage 47 and the rod-site feed and exhaust passage 51 are constituted by the first, second and third channels 37, 38 and 39 formed in the outer surface of the internal body 36.
- first, second and third channels 37, 38 and 39 are formed to have the first, second third axial portions 37a, 38a and 39a and the first, second and third circumferential portions 37b, 38b and 39b in the aforementioned manner, the work for forming the channels becomes easy.
- a through-hole 55 slightly inclined with respect to the central axis is formed in the internal body 36-
- One end of the through-hole 55 is opened in a position slightly in the front of the midpoint between the backward ends of the first and second circumferential portions 37b and 38b.
- the other end of the through-hole 55 is opened in a position slightly in the front of the one-end opening and at a distance of about a half circuit from the one-end opening.
- the reference numeral 56 designates a first head-site feed and exhaust passage portion formed in the passage block 26.
- One end of the first head-site feed and exhaust passage portion 56 is connected to the fluid-controlled valve 27.
- the other end of the first head-site feed and exhaust passage portion 56 communicates with the one-end opening of the through-hole 55.
- a second head-site feed and exhaust passage portion 57 is formed in the passage block 26.
- One end of the second head-site feed and exhaust passage portion 57 communicates with the other-end opening of the through-hole 55.
- the other end of the second head-site feed and exhaust passage portion 57 is connected to the head-site chamber 30a of the actuator 28.
- the first and second head-site feed and exhaust passage portions 56 and 57 and the through-hole 55, which are provided in the passage block 26, entirely constitute a head-site feed and exhaust passage 58 for connecting the fluid-controlled valve 27 and the actuator 28 to each other.
- the reference numeral 60 designates a flange which is formed at a rear end (backward end) of the internal body 36 and which has a larger diameter than the inner diameter of the space 35.
- the foregoing internal body 36 is received in the space 35 liquid-tightly by means of press-fitting, shrink-fitting, or the like.
- the first, second and third channels 37, 38 and 39 and the through-hole 55 are sealed securely individually. There is no fluid leakage from the channels and the through-hole.
- the portions (intermediate portions) of the feed passage 43, the exhaust passage 47 and the rod-site feed and exhaust passage 51 are constituted by the first, second and third channels 37, 38 and 39 formed in the outer surface of the internal body 36.
- the device can be produced inexpensively because the work for forming the fluid passages becomes easy as well as the structure of the device becomes simple compared with the case where the fluid passages are partially formed from a plurality of straight drill holes.
- a process of closing each opening end by a plug and a process of chamfering each bending portion become needless, so that the device can be produced more inexpensively.
- the material for the passage block 26 and the internal body 36 is changed from aluminum to titanium or steel with application of high pressure to fluid, the aforementioned effect becomes more remarkable.
- each of the space 35 and the internal body 36 is shaped like a column
- the present invention may be applied also to the case where each of the space 35 and the internal body 36 is shaped like a prism.
- the aforementioned embodiment has shown the case where each of the first, second and third channels 37, 38 and 39 has axially extending portions and circumferentially extending portions
- the present invention may be applied also to the case where each of the channels extends obliquely (helically) as a whole.
- valve holes extending axially may be formed in the foregoing internal body and valves may be disposed in the valve holes so that fluids flowing in channels can be controlled by the valves' switching.
- channels may be formed in the inner surface of the space as well as channels are formed in the outer surface of the internal body.
- the structure of a fluidic device can be simplified and the production cost thereof can be reduced.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Valve Housings (AREA)
- Actuator (AREA)
Abstract
Description
- The present invention relates to a fluidic device comprising a plurality of fluidic modules, and a passage block to which the plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages for communicating the plurality of fluidic modules with one another.
- For example, a device as shown in Figs. 9, 10 and 11 is known as a background-art fluidic device. The device comprises a plurality of fluidic modules such as a fluid pump not shown, a tank not shown, a fluid-controlled
valve 11 and anactuator 12, and apassage block 13 to which the fluid pump, the tank, the fluid-controlledvalve 11, and the actuator are attached. Thepassage block 13 is provided, in its inside, with four fluid passages. That is, in thepassage block 13, there are provided afeed passage 14 for connecting the fluid pump and the fluid-controlledvalve 11 to each other, anexhaust passage 15 for connecting the tank and the fluid-controlledvalve 11 to each other, a head-site feed andexhaust passage 17 for connecting the fluid-controlledvalve 11 and a head-site chamber 16 of theactuator 12 to each other, and a rod-site feed andexhaust chamber 19 for connecting the fluid-controlledvalve 11 and a rod-site chamber 18 of theactuator 12 to each other. - Incidentally, the
feed passage 14, theexhaust passage 15 and the feed andexhaust passages exhaust passage 19 as an example, thepassage 19 is bent three times because thepassage 19 has afirst passage portion 19a extending downward from an upper surface of thepassage block 13, asecond passage portion 19b extending backward from a lower end of thefirst passage portion 19a, athird passage portion 19c extending leftward from an intermediate portion of thesecond passage portion 19b, and afourth passage portion 19d extending downward from an intermediate portion of thethird passage portion 19c. Further, an opening end of an intermediately located passage portion (straight hole) such as thesecond passage portion 19b is closed by aplug 23 which has, as shown in Fig. 12, abody 20 inserted from its forward end side into the opening end portion of thesecond passage portion 19b, ahole 21 formed in thebody 20, and aplug 22 implanted in thehole 21 to widen the diameter of a rear end portion of thebody 20. - If the fluid passages are bent meanderingly as described above, each fluid passage needs passage portions of the number obtained by addition of one to the number of bends. When, for example, the fluid passage is bent three times, the fluid passage needs four passage portions (straight holes). As a result, there is a problem that the cost of the resulting device is increased because a troublesome drilling process is required as well as the structure of the device is complicated. Moreover, the opening end portion of each intermediate passage portion (straight hole) must be processed with sufficiently high accuracy to be closed by the
aforementioned plug 23. As a result, there is also a problem that the cost of the device is increased more greatly. Moreover, stress concentration is apt to occur in each bending portion of the fluid passage, that is, in a joint between adjacent passage portions of the fluid passage because such adjacent passage portions is crossed each other at 90 degrees. To prevent such stress concentration, it is necessary to chamfer each bending portion. As a result, there is a further problem that the cost of the device is increased more and more greatly. - An object of the present invention is to provide a fluidic device which is simple in structure and which can be produced inexpensively.
- The above object can be achieved by a fluidic device comprising a plurality of fluidic modules, and a passage block to which the plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages for communicating the plurality of fluidic modules to one another, wherein: a space is formed in the passage block; and an internal body is received in the space liquid-tightly, channels being formed in an outer surface of the internal body so that the channels form part of the fluid passages.
- In the present invention, the fluid passages are partially formed by the channels formed in the internal body. Since such channels are formed in the outer surface of the internal body, the work for forming the channels becomes so easy that the resulting device can be produced inexpensively as well as the channels becomes simple in structure compared with a plurality of straight drill holes. Moreover, a process of closing each opening end with a plug and a process of chamfering each bending portion become needless, so that the resulting device can be produced more inexpensively. Incidentally, since the internal body is received in the space so liquid-tightly that the channels are sealed securely individually, there is no fluid leakage.
- Further, according to the configuration as described in Claim 2, the work for forming the space, the internal body and the channels becomes easy.
- Further, according to the configuration as described in Claim 3, the work for forming the channels becomes easy.
- Further, according to the configuration as described in Claim 4, the internal body can be positioned easily with sufficiently high accuracy.
- The present disclosure relates to the subject matter contained in Japanese patent application No. Hei. 11-347184 (filed on December 7, 1999), which is expressly incorporated herein by reference in its entirety.
-
- Fig. 1 is a frontal sectional view showing an upper half of an embodiment of the present invention.
- Fig. 2 is a view from the arrow I-I in Fig. 1.
- Fig. 3 is a right sectional view of a lower half thereof.
- Fig. 4 is a perspective view of the internal body.
- Fig. 5 is a plan view of the internal body.
- Fig. 6 is a sectional view from the arrow II-II in Fig. 5.
- Fig. 7 is a sectional view from the arrow III-III in Fig. 5.
- Fig. 8 is a sectional view from the arrow IV-IV in Fig. 5.
- Fig. 9 is a frontal sectional view showing an upper half of an example of a background-art fluidic device.
- Fig. 10 is a view from the arrow V-V in Fig. 9.
- Fig. 11 is a right sectional view of a lower half thereof.
- Fig. 12 is a plan sectional view showing an opening end portion of a passage.
-
- An embodiment of the present invention will be described below with reference to the drawings.
- In Figs. 1, 2 and 3, the
reference numeral 26 designates a passage block shaped like a rectangular parallelopiped. A fluid-controlledvalve 27 as a fluidic module is attached to an upper surface of thepassage block 26. Further, a fluid pump and a tank as fluidic modules not shown are connected to left and right ends, respectively, of thepassage block 26 through pipe conduits (not shown). Further, anactuator 28 for aircraft spoiler as a fluid module is attached to a lower surface of thepassage block 26. Theactuator 28 has acasing 29 extending back and forth, apiston 31 slidably received in thecasing 29 for partitioning acylinder chamber 30 in thecasing 29 into a head-site chamber 30a and a rod-site chamber 30b, and apiston rod 32 integrally attached to thepiston 31 and passing through a rear end wall of thecasing 29. In this manner, a plurality of fluidic modules are attached to thepassage block 26. - In Figs. 1 to 8, a
columnar space 35 is formed in a central portion of thepassage block 26 so as to extend back and forth while passing through thepassage block 26. A solid columnarinternal body 36 having the same diameter as that of thespace 35 is received in thespace 35. First, second andthird channels internal body 36, that is, in a circumferential surface of theinternal body 36 in this embodiment. The first, second andthird channels space 35 and theinternal body 36 are constituted by a columnar space and a column respectively and the first, second andthird channels internal body 36 in the aforementioned manner, the work for forming thespace 35, theinternal body 36 and thechannels - The
first channel 37 has a firstaxial portion 37a extending axially backward from a front end portion of theinternal body 36, and a firstcircumferential portion 37b extending circumferentially by about a quarter circuit from a rear end of the firstaxial portion 37a. Thereference numeral 41 designates a first feed passage portion formed in thepassage block 26. One end of the firstfeed passage portion 41 is connected to the pipe conduit of the fluid pump. The other end of the firstfeed passage portion 41 communicates with one end of thefirst channel 37, that is, with a front end of the firstaxial portion 37a. Further, a secondfeed passage portion 42 is formed in thepassage block 26. One end of the secondfeed passage portion 42 communicates with the other end of thefirst channel 37, that is, with a backward end of the firstcircumferential portion 37b. The other end of the secondfeed passage portion 42 is connected to the fluid-controlledvalve 27. The foregoing first and secondfeed passage portions first channel 37, which are provided in thepassage block 26, entirely constitute afeed passage 43 which serves as a fluid passage for connecting the fluid pump and the fluid-controlledvalve 27 to each other. - Further, the
second channel 38 has a secondaxial portion 38a extending axially backward from a front end portion of theinternal body 36 so as to be at a distance of an about half circuit from the front end of thefirst axil portion 37a, and a secondcircumferential portion 38b extending circumferentially by an about quarter circuit from a rear end of the secondaxial portion 38a toward the firstcircumferential portion 37b. Thereference numeral 45 designates a first exhaust passage portion formed in thepassage block 26. One end of the firstexhaust passage portion 45 is connected to the pipe conduit of the tank. The other end of the firstexhaust passage portion 45 communicates with one end of thesecond channel 38, that is, with a front end of the secondaxial portion 38a. Further, a secondexhaust passage portion 46 is formed in thepassage block 26. One end of the secondexhaust passage portion 46 communicates with the other end of thesecond channel 38, that is, with a backward end of the secondcircumferential portion 38b. The other end of the secondexhaust passage portion 46 is connected to the fluid-controlledvalve 27. The foregoing first and secondexhaust.passage portions second channel 38, which are provided in thepassage block 26, entirely constitute anexhaust passage 47 which serves as a fluid passage for connecting the tank and the fluid-controlledvalve 27 to each other. - Further, the
third channel 39 has a thirdaxial portion 39a extending axially backward from a position slightly in the rear of a midpoint between the backward ends of the first and secondcircumferential portions circumferential portion 39b extending circumferentially by an about half circuit from a rear end of the thirdaxial portion 39a in the same direction as the firstcircumferential portion 37b. Thereference numeral 49 designates a first rod-site feed and exhaust passage portion formed in thepassage block 26. One end of the first rod-site feed andexhaust passage portion 49 is connected to the fluid-controlledvalve 27. The other end of the first rod-site feed andexhaust passage portion 49 communicates with one end of thethird channel 39, that is, with a front end of the thirdaxial portion 39a. Further, a second rod-site feed andexhaust passage portion 50 is formed in thepassage block 26. One end of the second rod-site feed andexhaust passage portion 50 communicates with the other end of thethird channel 39, that is, with a backward end of the thirdcircumferential portion 39b. The other end of the second rod-site feed andexhaust passage portion 50 is connected to the rod-site chamber 30b of theactuator 28. The foregoing first and second rod-site feed andexhaust passage portions third channel 39, which are provided in thepassage block 26, entirely constitute a rod-site feed and exhaust passage 51 which serves as a fluid passage for connecting the fluid-controlledvalve 27 and theactuator 28 to each other. - In this manner, the plurality (four) of fluidic modules, that is, the fluid pump, the tank, the fluid-controlled
valve 27 and theactuator 28 are connected to one another by the fluid passages provided in thepassage block 26, that is, thefeed passage 43, theexhaust passage 47 and the rod-site feed and exhaust passage 51. Parts (intermediate portions) of thefeed passage 43, theexhaust passage 47 and the rod-site feed and exhaust passage 51 are constituted by the first, second andthird channels internal body 36. If the first, second andthird channels axial portions circumferential portions - Further, a through-
hole 55 slightly inclined with respect to the central axis is formed in the internal body 36- One end of the through-hole 55 is opened in a position slightly in the front of the midpoint between the backward ends of the first and secondcircumferential portions hole 55 is opened in a position slightly in the front of the one-end opening and at a distance of about a half circuit from the one-end opening. Thereference numeral 56 designates a first head-site feed and exhaust passage portion formed in thepassage block 26. One end of the first head-site feed andexhaust passage portion 56 is connected to the fluid-controlledvalve 27. The other end of the first head-site feed andexhaust passage portion 56 communicates with the one-end opening of the through-hole 55. Further, a second head-site feed andexhaust passage portion 57 is formed in thepassage block 26. One end of the second head-site feed andexhaust passage portion 57 communicates with the other-end opening of the through-hole 55. The other end of the second head-site feed andexhaust passage portion 57 is connected to the head-site chamber 30a of theactuator 28. The first and second head-site feed andexhaust passage portions hole 55, which are provided in thepassage block 26, entirely constitute a head-site feed andexhaust passage 58 for connecting the fluid-controlledvalve 27 and theactuator 28 to each other. - The
reference numeral 60 designates a flange which is formed at a rear end (backward end) of theinternal body 36 and which has a larger diameter than the inner diameter of thespace 35. When theflange 60 is made to abut on the outer surface of thepassage block 26, especially on the rear end surface of thepassage block 26, after theinternal body 36 has been inserted from its forward end side into thespace 35, theflange 60 determines the position of theinternal body 36 to be received easily with sufficiently high accuracy so that thefirst channel 37 communicates with the first and secondfeed passage portions second channel 38 communicates with the first and secondexhaust passage portions third channel 39 communicates with the first and second rod-site feed andexhaust passage portions internal body 36 is received in thespace 35 liquid-tightly by means of press-fitting, shrink-fitting, or the like. As a result, the first, second andthird channels hole 55 are sealed securely individually. There is no fluid leakage from the channels and the through-hole. - The operation of the embodiment of the present invention will be described below.
- Assume now that the fluid-switching
valve 27 is switched so that a high-pressure fluid discharged from the fluid pump is fed into the rod-site chamber 30b of theactuator 28 through the pipe conduit, thefeed passage 43 and the rod-site feed and exhaust passage 51. On this occasion, a low-pressure fluid is extruded from the head-site chamber 30a of theactuator 28 into the head-site feed andexhaust passage 58 because thepiston rod 32 retracts. The low-pressure fluid is withdrawn into the tank through theexhaust passage 47 and the pipe conduit. - In this case, the portions (intermediate portions) of the
feed passage 43, theexhaust passage 47 and the rod-site feed and exhaust passage 51 are constituted by the first, second andthird channels internal body 36. Hence, the device can be produced inexpensively because the work for forming the fluid passages becomes easy as well as the structure of the device becomes simple compared with the case where the fluid passages are partially formed from a plurality of straight drill holes. Moreover, a process of closing each opening end by a plug and a process of chamfering each bending portion become needless, so that the device can be produced more inexpensively. Particularly when the material for thepassage block 26 and theinternal body 36 is changed from aluminum to titanium or steel with application of high pressure to fluid, the aforementioned effect becomes more remarkable. - Although the aforementioned embodiment has shown the case where each of the
space 35 and theinternal body 36 is shaped like a column, the present invention may be applied also to the case where each of thespace 35 and theinternal body 36 is shaped like a prism. Although the aforementioned embodiment has shown the case where each of the first, second andthird channels - As described above, according to the present invention, the structure of a fluidic device can be simplified and the production cost thereof can be reduced.
Claims (5)
- A fluidic device comprising a plurality of fluidic modules, and a passage block to which said plurality of fluidic modules are connected and which is provided, in its inside, with fluid passages for communicating said plurality of fluidic modules with one another, wherein: a space is formed in said passage block; and an internal body is received in said space liquid-tightly, channels being formed in an outer surface of said internal body so that said channels form part of said fluid passages.
- A fluidic device according to Claim 1, wherein: said space is constituted by a columnar space; said internal body is constituted by a column; and said channels are formed in a circumferential surface of said internal body.
- A fluidic device according to Claim 2, wherein said channels formed in said internal body are constituted by axial portions extending axially, and circumferential portions extending circumferentially.
- A fluidic device according to Claim 2 or 3, wherein:said internal body is received in said space by being inserted from its forward end into said space; and a flange is formed at a backward end of said internal body so that said flange abuts on an outer surface of said passage block to define a position of insertion of said internal body.
- A unit for fluid communication of a plurality of fluid modules, said unit comprising:a passage block having an outer surface, an inner surface, and a plurality of linear fluid passages, each linearly extending from said outer surface to said inner surface; andan internal body having an outer surface sealingly contacted with said inner surface of said passage block, and a plurality of grooves that are recessed from and extending along said outer surface of said internal body for connection of said fluid passages.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001623206 DE60123206T2 (en) | 2001-01-19 | 2001-01-19 | Fluidic device |
EP20010101289 EP1225344B1 (en) | 2001-01-19 | 2001-01-19 | Fluidic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20010101289 EP1225344B1 (en) | 2001-01-19 | 2001-01-19 | Fluidic device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1225344A1 true EP1225344A1 (en) | 2002-07-24 |
EP1225344B1 EP1225344B1 (en) | 2006-09-20 |
Family
ID=8176260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010101289 Expired - Lifetime EP1225344B1 (en) | 2001-01-19 | 2001-01-19 | Fluidic device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1225344B1 (en) |
DE (1) | DE60123206T2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8635866B2 (en) | 2009-05-05 | 2014-01-28 | Hoerbiger Automotive Komfortsysteme Gmbh | Hydraulic system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4011887A (en) * | 1976-02-23 | 1977-03-15 | R. E. Raymond Co. Inc. | Fluid power control apparatus |
US4080983A (en) * | 1975-05-15 | 1978-03-28 | Fritz Stumpmeier | Valve base for connecting hydraulic valves in hydraulic circuits |
US5297469A (en) * | 1991-10-25 | 1994-03-29 | Raymond Robert E | Linear fluid power actuator assembly |
-
2001
- 2001-01-19 EP EP20010101289 patent/EP1225344B1/en not_active Expired - Lifetime
- 2001-01-19 DE DE2001623206 patent/DE60123206T2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4080983A (en) * | 1975-05-15 | 1978-03-28 | Fritz Stumpmeier | Valve base for connecting hydraulic valves in hydraulic circuits |
US4011887A (en) * | 1976-02-23 | 1977-03-15 | R. E. Raymond Co. Inc. | Fluid power control apparatus |
US5297469A (en) * | 1991-10-25 | 1994-03-29 | Raymond Robert E | Linear fluid power actuator assembly |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8635866B2 (en) | 2009-05-05 | 2014-01-28 | Hoerbiger Automotive Komfortsysteme Gmbh | Hydraulic system |
Also Published As
Publication number | Publication date |
---|---|
DE60123206T2 (en) | 2007-01-04 |
EP1225344B1 (en) | 2006-09-20 |
DE60123206D1 (en) | 2006-11-02 |
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