JPS6162606A - Fluid valve device and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid valve system, and more particularly, to a fluid valve system which, in cooperation with one or more nozzles, is capable of impinging all of the fluid ejected from the nozzle under high pressure. The present invention relates to a type of valve device having a control member of the type described above, and a method for manufacturing the same.

Some conventional valve arrangements of this type operate one nozzle, for example by an electric motor, to increase or decrease the restriction of flow through the nozzle to exert a desired control action on a hydraulically operated device connected thereto. Or a flow restriction member, such as a flap or lead-like member, adapted to be deflected against a pair of opposing nozzles. As the development of such valve systems has progressed, their range of applications has expanded and there has been a great desire for smaller versions of such valve systems for certain applications. However, with the current design of this type of fluid valve arrangement, it has proven extremely difficult to manufacture miniature versions thereof without encountering significant manufacturing problems.

The present invention comprises a flow obstruction member cooperating with at least one nozzle and is compact in construction so that it can be manufactured in very small sizes without encountering significant manufacturing problems. An object of the present invention is to provide a fluid valve device and a method for manufacturing the same.

SUMMARY OF THE INVENTION Briefly, the present invention provides a fluid valve device including a casing of a laminated structure consisting of a plurality of sheet-like elements coupled in face-to-face engagement with each other, wherein one of the elements includes at least one of the elements. one nozzle is formed, the casing comprising a chamber defined by openings formed in some of the elements, into which chamber each core nozzle opens, and a lamellar A flow obstruction member and actuating means for actuating the flow obstruction member are provided, the flow obstruction member being positioned within the chamber and adapted to cooperate with the nozzle and supported by pivoting means, the flow obstruction member being adapted to cooperate with the nozzle. The member is pivotally coupled by the actuating means to vary the flow rate of fluid exiting through the nozzle and into the chamber to control the overall pressure within at least one fluid supply port of the valve arrangement. A fluid valve device is provided, characterized in that it is pivoted about the axis of the means.

Preferably, the pivot means is in the form of a thin plate and has substantially the same thickness as the flow obstruction member.

Preferably, the number of nozzles formed in the one of the elements is two, and the axis of the pivoting means is transverse to the length of the flow inhibiting member, and
It is located in a plane intermediate the two nozzles, such that one surface portion and the other surface portion of the flow obstruction member each cooperate with a corresponding one nozzle.

The pivot means may be formed integrally with the flow obstruction member and project transversely from the flow obstruction member so as to be sandwiched between two y4 abutting elements of the sheet-like elements. In this case, said pivoting means is formed of a material having specific properties such that it constitutes a torsion spring means for retaining said flow obstruction member.

Said actuating means may consist of a force-generating electric motor, in which case it may be fixed to the output member or armature of the force-generating electric motor.

The nozzle is in communication with a source of pressurized fluid at its upstream side via passages and orifices provided in water bodies of some of the notebook elements and is controlled by the valve arrangement. can be communicated with a fluid pressure operated device;
The nozzle opens into a discharge section on its downstream side.

The sheet-like element can be bonded with a suitable adhesive or
The connection can be made by metal joining methods such as soldering or brazing, or by using mechanical fasteners.

The present invention provides a method of manufacturing a fluid valve device comprising: (a) forming a plurality of sheet-like elements each having a desired profile; (b) forming a flow-obstructing member of a desired shape; (c) forming recesses of desired dimensions and shapes in some of the elements;
(d) forming all through holes of the required size and shape in some of the elements; (e) forming at least one nozzle in one of the elements; and (f) forming each of the elements. stacked on a base in face-to-face engagement with each other and including said flow obstruction member and pivoting means therebetween; (g) clamping all of those elements on the base; and (h) said clamping. A method of manufacturing a fluid valve device comprising: combining the combined elements by any suitable method to form a laminated casing; and (1) removing the combined elements together with the flow obstruction member and the pivoting means from the pace.

The operation of bonding the elements includes injecting an adhesive in an uncured state into at least some of the holes and at least some of the recesses, and curing the adhesive. This can be done by heating the entire element and base assembly to a predetermined temperature and maintaining that temperature for a predetermined period of time.

The main advantages of the invention are that it is suitable for miniaturization, that it can be actuated by low electrical input signals applied to e.g. a power motor, that it can be used to directly control all hydraulically actuated devices, and that it Alternatively, it is an object of the present invention to provide an extremely compact fluid valve system that can be used as the first stage of a multi-stage valve arrangement.

Explanation of the example (4 to 51 participants, 4 shots BIJJ O first fruit,
.

A single-stage fluid valve device 1 according to (30) is shown. This valve device consists of a casing 2 of laminated structure.

The casing 2 comprises a number of 7-1 shaped metal elements 3.4.5.6.7.8.9 (made of steel, for example) of the desired contour in face-to-face engagement with each other and with suitable adhesive bonding as described below. and the bolt holes 10, 11° 12.15' of each element.
It is constructed by connecting with a bolt (not shown) inserted through the ji-.

The element 5 has an inlet port 14 for receiving high pressure liquid drawn from a supply source (not shown) and a return port for connection to a liquid reservoir (not shown). 15 and a fluid supply port 16.17e for connection to a hydraulically operated device to be controlled by this valve arrangement. Element 3 also has a recess 18ft, and port 14 has a recess 18ft.
It is open to

The element 4 comprises a recess 19, 2D, which constitutes an orifice plate and communicates with the orifice 21, 22, respectively. Element 4b also communicates with return port 15 of element 3 and port 25 of element 5, and has a drain limiter 24fr and a port 26'fr:.

Element 5 constitutes a nozzle plate. The above-mentioned port 25 of the element 5 opens into a recess 26 formed in the element, and from the bottom wall of the recess 26 projects upwardly two spaced apart nozzles 27,28.

The element 6 constitutes a short to long plate and has a hole 29.

Element 7 constitutes the entire armature assembly for this valve device,
A flow inhibiting member 50 having a rectangular profile is included.

The elements 6 (30 surface portions 31, 32 cooperate with respective adjacent nozzles 27, 28. The rectangular flow obstruction elements 3
0 is formed integrally with the element by cutting the entire element Z by a chemical etching method, an electromechanical grinding method, or an electric discharge grinding method. The grinding of other elements of the casing 2 can also be carried out, at least in part, by any of these methods.

The cutting to form the member 30 is, in this embodiment, as indicated at 35.54, so as to provide the member with pivoting means 35.36i extending transversely outwardly to its length. A cut groove is also formed. These pivoting means 55, 56 are therefore rectangular in cross-section and of the same thickness as the element 7. The material of the element 7, and therefore of the pivoting means, allows the member 50 to be aligned with the pivot axis 67 of the pivoting means 35,36.
The material shall be such that it is possible to swing the pivoting means against resistance (screws) around the pivot means. Pivoting means 55.56
The degree of resistance of the screw 9 depends on the properties of the material 7 and thus the material selected for manufacturing the entire pivoting means.

An armature 38, which completes the armature assembly, is secured to member 30 by a suitable adhesive, such as, for example, epoxy. Armature 58 is of the same rectangular shape and substantially the same thickness as member 50.

The element 8 is configured as a spacer plate tt and is provided with holes 59.

Element 9 constitutes a mounting plate for force-generating electric motor 40 .

The armature 58 described above constitutes a part of the motor 40. The motor 40 includes a permanent magnet 41 and a stator 42 including a coil assembly 46 . When the coil assembly 46 is 'attached', a variable magnetic field is applied to the permanent magnetic field of the magnet 41, thereby causing a change in the axis 37 of the armature 58 and thus the gold pivot means 55,56 of the member 30. The flow blocking element 50 can thus be pivoted from its neutral position, such that one surface portion 31 of the element 50 is brought closer to the nozzle 27 and the other A surface portion 52 of is moved away from the nozzle 28.

When manufacturing the elements 4, 5, etc. of this valve arrangement, the oriswiss and the nozzle are preferably formed by electrical discharge machining or by drilling, and the tips of the nozzles 27, 28 are formed by electrical discharge machining or other suitable machining. Shape.

Elements 3 to 9t - To assemble these elements first? After the cleaning process, they are stacked in a dry state on the assembly tool with dowel pins and the dowel pins of the assembly tool are inserted into the aligned holes 10.11.12.15 of all these elements. In this state, each element is in metal-to-metal contact. Next.

A tightening device (not shown) is operated to firmly clamp and hold elements 3 to 9, and a suitable adhesive, such as Evokin resin, is applied to the interface of each element through a suitable connection hole drilled in each element. Inject into a suitably formed recess.

The entire tool and valve gear assembly is then heated to a predetermined temperature and maintained at that temperature for a predetermined period of time to cure the adhesive and bond the stacked elements of the valve casing. The adhesive also serves to establish a seal at the desired location within the valve casing.

In the operation of the valve device 1 described above, when the flow inhibiting member 30 and the armature 58 are in the neutral position, the liquid supplied under pressure to the port 14 enters the recesses 19, 20 through the orifice 21.22i. , through nozzles 27,28 into a chamber 44 defined by elements 5,6,7,8°9. The liquid in chamber 44 is transferred to ports 23 and 1Ii
1] The entire limit 24 and metal 24 are discharged to the reservoir. With the flow obstruction member 30 in its neutral position, the flow through the nozzles 27 and 28 is equal, and therefore the pressures in the supply ports 16 and 17 upstream of these nozzles are equal. The hydraulically operated device controlled by this valve arrangement is therefore held in an equilibrium position.

The force-generating motor 40 now receives an electrical signal and causes the flow obstruction member 50 to move from its neutral position around the pivot axis 57 against the inherent threaded resistance of the pivot means 55, 56 in FIG. For example, if pivoted clockwise, the nozzle 28
The degree of flow restriction through nozzle 27 is increased and the degree of flow restriction through nozzle 27 is decreased, increasing the pressure in port 17 and decreasing the pressure in port 16.

Therefore, the hydraulically actuated device connected to this valve device is
It is actuated in response to such pressure differential within port 46.17. On the contrary, the force generating motor 40
If an electrical signal is received that causes the port to pivot counterclockwise about axis 37 from its neutral position, the pressure in port 16 will increase and the pressure in port 17 will decrease;
The hydraulically actuated device is correspondingly controlled in the opposite direction.

Referring to the second embodiment (30) of the present invention shown in FIG.
It is similar to the element 7 of the first embodiment, and has a rectangular flow inhibiting member 51 formed integrally with the element 50 by suitable notches therein. Again, this cut makes the first cut in the member 51 as indicated at 52.53.
Two pivoting means 54,55 similar to those of the embodiment are provided.

The valve device of the second embodiment is intended to constitute the first stage of an electric/hydraulic two-stage servo valve, and in this case,
Two service ports (not shown) similar to 16. Each communicates with a corresponding chamber (not shown) formed therein. A feedback wire 56 is fixed to the lower surface of the flow inhibiting member 51 by brazing or soldering, or by press fitting into a hole formed in the member 51. Part 5
1, the connection position of the wire 56 to the pivoting means 54.5
5 in the plane of axis 57. The free end portion 58 of the feedback wire 56 is spherical and adapted for low friction engagement within a suitable receptacle formed in the second stage spool valve body of the two stage servo valve arrangement. Feedback wire 56 is threaded through appropriate holes formed in the laminated element of the valve casing of the first stage of the valve arrangement and through holes formed in the casing of the second stage of the valve arrangement.

These holes can be formed by any of the methods described above in connection with the first implementation (30).

In the operation of the electric/hydraulic two-stage servo valve of the second embodiment, the axial displacement of the spool valve body is +1 L.
? The current is transmitted to the flow inhibiting member 51 through two wires 566°.

In the two implementations (30) illustrated here, the flow obstruction members 30.51 are each adapted to cooperate with two nozzles, but the flow obstruction members are adapted to cooperate with a single nozzle. It's okay.

In that case, the flow obstruction member is suitably shaped, pivotably mounted and configured to be spring biased towards the nozzle.

Also, in the embodiment (30) illustrated here, the laminated elements of the casing of the valve arrangement are joined by adhesive, but in other embodiments, by brazing or welding, or by suitable mechanical fastening. They may be joined together by a tool, and sealing between each stacked element can be achieved by elastomeric seals disposed in recesses formed by chemical attack at appropriate locations.

In the two illustrated embodiments, the input signal to the valve arrangement is derived from a force-generating electric motor, but in other embodiments the valve arrangement may be provided, for example by means of providing a pneumatic or hydraulic input signal - or a mechanical input signal. It is also possible to control the device.

[Brief explanation of the drawing]

1 and 2 are an exploded perspective view as seen from above and an exploded perspective view as seen from below, respectively, of a fluid valve device according to a first embodiment (30) of the present invention, and FIG. 3 is a bottom view of the valve device of FIGS. 1 and 2. The plan views from above, FIGS. 4 and 5, are respectively taken from line I in FIG.
FIG. 6 is a perspective view of a portion of a fluid valve device according to a second embodiment (30) of the present invention. In the figure, 2 is a casing, 5 to 9 are sheet elements, 14 is an inlet port, 15 is a return port, 16° 17 is a fluid supply port, 18, 19, 20 is a recess, 21° 22 is an orifice, 27.28 is the nozzle, 29.39 is the hole 1.50.
51 is a flow inhibiting member, 31.32 is a surface portion, 35.3
6 is a pivoting means, 68 is a t-shape, 40 is a force generating electric motor, and 44 is a chamber.

Claims (1)

[Scope of Claims] 1) A fluid valve device including a casing of a laminated structure consisting of a plurality of sheet-like elements coupled so as to face each other so as to face each other, one of the elements (5) having at least one Two nozzles (27
, 28) are formed, and the casing (2) is
A flow inhibiting member in the form of a thin plate, comprising a chamber (44) defined by openings formed in some of the elements (6 to 8), into which each nozzle opens; (30)
and actuating means (40) for actuating the same, the flow obstruction member being located within said chamber (44) and adapted to cooperate with said nozzle, said flow blocking member being adapted to cooperate with said nozzle and pivoting means (35, 3).
6), the flow obstruction member flowing through the nozzle into the chamber so as to control the pressure within the at least one fluid supply port (16, 17) of the valve arrangement. Said actuating means (
40) to the axis (37) of said pivoting means (35, 36)
A fluid valve device, characterized in that it is pivoted about. 2) The pivot means (35, 36) are thin plate-like, and
A fluid valve arrangement according to claim 1, wherein the fluid valve arrangement is substantially the same thickness as the flow obstruction member (30). 3) The number of the nozzles (27, 28) formed in the one element (5) of the elements is two, and the axis (37) of the pivoting means (35, 36) one surface portion (31) and the other surface portion (32) of the flow obstruction member, located transversely to the length of the member (30) and in a plane intermediate the two nozzles; 3. A fluid valve arrangement according to claim 2, wherein each of the nozzles (27, 28) is adapted to cooperate with a corresponding nozzle (27, 28). 4) said pivoting means (35, 36) are formed integrally with said flow obstruction member (30) and are sandwiched between two adjacent elements (6, 8) of said sheet-like elements; 4. A fluid valve device according to any one of claims 1 to 3, wherein the fluid valve device projects transversely from the flow inhibiting member. 5) A fluid valve according to claim 4, wherein said pivoting means (35, 36) are made of a material having inherent properties such that they constitute torsion spring means for said flow obstruction member. Device. 6) A fluid valve arrangement according to any one of claims 1 to 5, wherein the actuating means (40) comprises a force-generating electric motor. 7) Output member or armature (3) of the force-generating electric motor
8) is a fluid valve device according to claim 6, wherein the fluid valve device is fixed to the flow inhibiting member (30). 8) The nozzles (27, 28) are connected to passages (27, 28) provided in some of the sheet-like elements on their upstream side.
19, 20) and orifices (21, 22) and to a hydraulically actuated device controlled by the valve arrangement, the nozzle downstream of which The fluid valve device according to any one of claims 1 to 7, which opens to the discharge portion. 9) The fluid valve device according to any one of claims 1 to 8, wherein the sheet-like elements (6 to 9) are bonded together with an adhesive. 10) The fluid valve device according to any one of claims 1 to 8, wherein the sheet elements (3 to 9) are joined by a metal bonding method. 11) The fluid valve device according to claim 10, wherein the metal joining method is soldering or brazing. 12) The fluid valve device of claim 10, wherein said metal joining method involves the use of mechanical fasteners. 13) Sealing between the sheet-like elements is established by an elastomeric seal disposed in a recess formed by chemical etching at a suitable location in the element.
13. The fluid valve device according to any one of Item 12. 14) In the at least two-stage fluid valve device according to any one of claims 1 to 13, a feedback wire (56) is fixed to the flow inhibiting member (51), and the feedback wire A fluid valve device characterized in that the fluid valve device is adapted to engage a second stage movable member of the fluid valve device with low friction. 15) A method of manufacturing a fluid valve device, comprising: (a) forming a plurality of sheet-like elements (3 to 9) each having a desired contour; (b) forming a flow inhibiting member (30) of a desired shape and the flow (c) forming recesses of the required size and shape in some of the elements; (d) forming pivot means (35, 36) for the obstruction members; (e) forming a through hole of the required size and shape in the element;
one of said elements is formed with at least one nozzle (27, 28); (f) each said element is brought into facing engagement with one another to contain said flow obstruction member and pivot means therebetween; (g) clamping the elements on the base; (h) joining the clamped elements by a suitable method to form a laminated casing; (i) A method of manufacturing a fluid valve device comprising removing the coupled element together with the flow obstruction member and the pivoting means from the base. 16) The operation of bonding the elements includes injecting an adhesive in an uncured state into at least some of the holes and at least some of the recesses, and curing the adhesive. 15. The fluid valve device according to claim 14, characterized in that the entire assembly of the elements and the base is heated to a predetermined temperature and maintained at that temperature for a predetermined time. Production method.