JP2001173603A - Oil path constituting block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil path constituting block capable of reducing the cost of manufacture by improving work efficiency at assembly time in addition capable of preventing a mistake of assembly in an assembly part. SOLUTION: This oil path constituting block, piling together a plurality of sheets of oil path plates 1 to 5 having an oil path consisting of a groove 6, hole 7, etc., in an overlapped surface of the plate and an assembly hole for assembling an assembly part of valve element, spring, etc., is characterized by a constitution formed with assembly holes 25, 28, 31 from one overlapped surface side of the oil path plates 1 to 5 also provided with part receiving parts 25a, 28a, 31b under this assembly hole to restrict coming-off of the assembly part assembled in the assembly hole by the part receiving parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit in which a plurality of oil passage plates each having an oil passage formed of a groove or a hole and an assembly hole for incorporating an assembly part such as a valve or a spring are superposed. And an oil passage constituting block.

[0002]

2. Description of the Related Art FIG. 4 shows a block diagram of an oil passage formed by stacking a plurality of oil passage plates. This conventional oil passage configuration block a is configured by fixing five oil passage plates 1 to 5 with bolts 24. Each oil passage plate 1-5 has a groove 6
And an oil passage such as a hole 7. When the oil passage plates 1 to 5 provided with the oil passages are overlapped in this manner, an oil passage is configured between the overlapping surfaces. However, gaskets 8 to 11 are interposed between the oil passage plates 1 to 5, respectively.

[0003] Of the above-mentioned oil passage plates 1 to 5, the second oil passage plate 2 from the bottom of the drawing has assembling holes 14 and 15 penetrating on both surfaces thereof. Then, the shuttle valves s1 and s2 are configured by incorporating the valve bodies 16 and 17 into these assembling holes 14 and 15, respectively. These shuttle valves s1 and s2 are connected to the oil passage plate 1 on the lower side of the drawing.
Of the pressure oil guided from the hole 7 of the oil passage plate 3 and the pressure oil guided from the hole 7 of the oil passage plate 3 on the upper side of the drawing, the higher pressure oil is selected and guided to the groove 6 formed in the oil passage plate 2. Things.

Further, a third oil passage plate 3 from the bottom of the drawing
Also, an assembling hole 18 penetrating through both surfaces is formed.
The check valve c is formed by incorporating the valve element 19 and the spring 20 into the mounting hole 18. The check valve c thus configured presses the valve element 19 against the mating surface of the oil passage plate 4 on the lower side in the drawing by the spring force of the spring 20. However, when fluid pressure acts on the valve body 19 from the hole 7 of the oil passage plate 4,
The valve body 19 moves downward while bending the spring 20. Therefore, the hole 7 communicates with the groove 6 of the oil passage plate 3, and pressure oil is supplied from the hole 7 to the groove 6 side. on the other hand,
When fluid pressure acts on the valve body 19 from the groove 6 side of the oil passage plate 3, the valve body 19 is pressed against the mating surface of the oil passage plate 4. Therefore, backflow from the groove 6 to the hole 7 is restricted.

Further, a spool hole 21 is formed in the fourth oil passage plate 4 from the bottom in the drawing. The spool 22 is slidably incorporated in the spool hole 21 to form the flow control valve R. A plurality of connection ports 12 are formed in the oil passage plate 1 at the lower end of the drawing and the oil passage plate 5 at the upper end of the drawing, and a joint 13 is connected to these ports 12.

[0006] The oil path constituting block a as described above is
Assemble according to the following procedure. First, the oil passage plate 1 to which the joint 13 has been connected in advance is set on a work table with its overlapping surface facing upward. When the oil passage plate 1 is set on the workbench in this manner, the gasket 8
And the oil passage plate 2 is overlaid thereon.
The mounting hole 1 of the superposed oil passage plate 2
Shuttle valves s1 and s2 are configured by incorporating valve bodies 16 and 17 into 4, 15 respectively. In addition, assembling holes 14, 1
The valve bodies 16, 17 incorporated in 5 maintain a state of contact with the upper surface of the oil passage plate 1.

As described above, the valve body 16,
After assembling the gasket 17, the gasket 9 is placed on the upper surface of the oil passage plate 2, and the oil passage plate 3 is overlaid. Then, the assembly holes 18 of the superposed oil passage plate 3
Then, the check valve c is configured by incorporating the spring 20 and the valve element 19. The spring 20 has one end in contact with the upper surface of the oil passage plate 1, and the valve body 19 keeps in contact with the other end of the spring 20.

After the spring 20 and the valve element 19 are assembled in the oil passage plate 3 as described above, the gasket 10 and the oil passage plate 4 are overlaid on the upper surface thereof. It should be noted that a spool 22 is incorporated in the oil passage plate 4 in advance. Then, the gasket 11 is placed on the upper surface of the oil passage plate 4, and the oil passage plate 5 to which the joint 13 is connected in advance is overlapped thereon. When all the oil passage plates 1 to 5 are overlapped in this way, the oil passage plates 1 to 5
The bolt 24 is inserted into the bolt hole 23 formed in the above, and tightened. When the bolts 24 are tightened in this manner, the oil passage plates 1 to 5 are integrated, and the oil passage forming block a is completed.

Although not shown, a shuttle valve and a check valve are further incorporated in the oil passage forming block a. That is, the required number of shuttle valves and check valves are incorporated in the oil passage plate 2 or the oil passage plate 3 according to the circuit configuration. Also,
Similarly to the above, the required number of joints are connected to the oil passage plates 1 and 5, and the required number of spools is incorporated in the oil passage plate 4.

[0010]

In the above conventional example, before the oil passage plates 2 and 3 are overlapped, assembled parts such as the valve element 16 and the spring 20 are incorporated into the oil passage plates 2 and 3. Could not. Because the assembling holes 14, 15, 18 penetrate the oil passage plates 2, 3, even if an assembling part such as the valve body 16 is incorporated into the assembling holes 14, 15, 18, it is difficult to remove the oil. Road plate 2, 3
It is because it falls out of. Therefore, in this conventional example, the operation of superposing the oil passage plates and the operation of incorporating the assembled components have to be alternately performed, for example, after the oil passage plates are superimposed and then the assembled parts are assembled. However, if such different operations are alternately performed, the operation efficiency at the time of assembly is inevitably reduced. In addition, there is a problem in that the manufacturing cost is increased as much as the work efficiency is deteriorated.

In this conventional example, as described above,
Depending on the circuit configuration, the check valve and the shuttle valve may be incorporated in the same single oil passage plate. However, in this case, different types of assembly parts will be incorporated into the assembly holes, so even though the assembly holes are for the shuttle valve, the springs that make up the check valve may be accidentally inserted or the check valve However, it was easy to cause problems such as forgetting to insert the spring. SUMMARY OF THE INVENTION It is an object of the present invention to provide an oil passage forming block that can increase the working efficiency at the time of assembling, reduce the manufacturing cost, and can prevent erroneous assembly of assembled parts.

[0012]

According to a first aspect of the present invention, an oil passage formed of a groove, a hole, and the like, and an assembling hole for incorporating an assembling part such as a valve body and a spring are provided on a superposed surface of the plates. In an oil passage configuration block in which a plurality of oil passage plates provided are stacked, an assembly hole is formed from one of the overlapping surfaces of the oil passage plate, and a component receiving portion is provided below the assembly hole. The detachment of the assembled component assembled in the assembly hole is restricted by the component receiving portion.

According to a second aspect of the present invention, in the first aspect,
The oil passage plate is characterized in that only the same kind of assembling members are assembled.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS. 1 to 3, the constructions of the shuttle valves S1, S2 and the check valve C incorporated in the oil passage plates 2, 3 are different from those of the prior art, but other constructions are described. Are the same as those in the conventional example, the same components are denoted by the same reference numerals as in the conventional example, and detailed description thereof will be omitted.

FIG. 2 is an enlarged view of the oil passage plates 2 and 3 of the oil passage construction block A shown in FIG. As shown in FIG. 2, the oil passage plate 2 has an assembly hole 25 formed therein. A small diameter hole 26 is formed in the bottom 25a of the assembly hole 25, and the assembly hole 25 and the hole 7 of the oil passage plate 1 are communicated through the small diameter hole 26 (see FIG. 1). .
The shuttle valve S1 is formed by incorporating the valve body 27 into the mounting hole 25 in this manner. As described above, the valve body 27 incorporated in the mounting hole 25 is restricted from falling out of the mounting hole 25 by the bottom 25a.
That is, the bottom portion 25a of the mounting hole 25 constitutes the component receiving portion of the present invention.

The oil passage plate 2 is formed with an assembling hole 28 in the same manner as the shuttle valve S1, and has a bottom 28a.
The small diameter hole 29 is formed. The shuttle valve S2 is formed by incorporating the valve body 30 into the mounting hole 28. The valve body 30 of the shuttle valve S2 is also
a restricts falling off from the mounting hole 28. Although not shown, the oil passage plate 2 incorporates another shuttle valve having the same structure as the shuttle valves S1 and S2. However, the oil passage plate 2 does not incorporate anything other than the shuttle valve, such as a check valve.

On the other hand, the oil passage plate 3 also has an assembly hole 31 formed therein. However, the assembling hole 31 does not penetrate the oil passage plate 3, but forms a recess 31b in the bottom 31a. The spring 32 is inserted into the recess 31b.
Is inserted, and then the valve body 33 is assembled. In this way, the spring 32 and the valve body 3
The check valve C is configured by incorporating the control valve C. The spring 32 and the valve element 33 incorporated in the mounting hole 31 as described above are regulated by the concave portion 31b so as not to fall out of the mounting hole 31. That is, the concave portion 31b of the mounting hole 31 constitutes the component receiving portion of the present invention.

Although not shown, another check valve having the same structure as the check valve C is incorporated in the oil passage plate 3. However, only the check valve is incorporated in the oil passage plate 3, and the shuttle valve and the like are not incorporated. Then, only the joint 13 is connected to the oil passage plates 1 and 5, and only the spool is incorporated into the oil passage plate 4. That is, only the same type of assembling member is assembled to each of the oil passage plates 1 to 5. In other words, an oil passage plate is configured for each type of assembled component.

Next, the procedure for assembling the oil passage constituting block A will be described. First, each oil passage plate 1-5
Assembling parts such as a valve body are assembled in advance. That is,
The connection port 12 of the oil passage plates 1 and 5 has a joint 13
And a spool 22 is previously installed in the spool hole 21 of the oil passage plate 4. Oil passage plate 2
The valve bodies 27 and 30 are respectively assembled in the assembly holes 25 and 28 with the mating surface 2a facing upward. Then, the spring 32 and the valve element 33 are incorporated in the assembly hole 31 of the oil passage plate 3 with the mating surface 3a facing upward.

However, the length and the spring constant of the spring 32 are set so that a part of the valve body 33 incorporated in the oil passage plate 3 is kept in the assembly hole 31. This is done so that the valve body 33 does not have to be pressed with a hand or the like when the oil passage plates 4 are overlapped. That is, when the valve body 33 is completely pushed out of the mounting hole 31 by the spring 32,
Even if the oil passage plate 4 is overlapped, the valve body 33 is not
Do not enter 1. Therefore, in this case, it is necessary to hold the valve body 33 with one hand or the like. However, such an operation of superposing the oil passage plate 4 while holding the valve body 33 with one hand is very difficult to perform and the workability is poor.

Therefore, in this embodiment, as described above, by keeping a part of the valve body 32 in the mounting hole 31, the oil passage plate can be held without manually pressing the valve body 33. The valve body 33 is inserted into the assembling hole 31 simply by overlapping the four. By doing so, the workability when the oil passage plates 4 are overlapped can be improved.

After assembling parts such as valve bodies into the oil passage plates 1 to 5 as described above, the mating surface 1a of the oil passage plate 1 is turned upward as shown in FIG. The oil passage plate 1 is set on a work table (not shown). Then, the gasket 8 is placed on the upper surface of the oil passage plate 1, and the oil passage plate 2 is overlaid thereon. However, this oil passage plate 2 has a mating surface 2
a faces up. If the mating surface 2a faces upward as described above, the valve bodies 27 and 30 that have been incorporated in advance do not fall off.

Next, the gasket 9 is placed on the upper surface 2a of the upper oil passage plate 2, and the oil passage plate 3 is overlaid. This oil passage plate 3 also has its mating surface 3a facing upward,
The valve element 33, the spring 32, and the like, which are incorporated in advance, are prevented from falling off. Further, the gasket 10 is placed on the upper surface of the oil passage plate 3 and the oil passage plate 4 is overlapped. When the oil passage plate 4 is overlapped in this way, the valve element 3 incorporated in the oil passage plate 3 as described above
The upper surface of 3 is pressed against the mating surface 4b of the oil passage plate 4 and is assembled into the valve body 33 in the assembly hole 31.

After the oil passage plate 4 is overlaid as described above, the gasket 11 is placed on the upper surface thereof, and finally the oil passage plate 5 is overlaid. As described above, when all the oil passage plates 1 to 5 are overlapped, the bolt 24 is tightened. When the bolts 24 are tightened in this manner, the oil path forming block A is completed.

According to this embodiment, the assembling holes 25, 28,
The bottom parts 25a, 28a and the concave parts 31b provided on the base 31 prevent the assembly parts such as the valve bodies 27, 30, 33 and the spring 32 from coming off. The above assembled components can be incorporated in the oil passage plates 2 and 3. Therefore, the work of incorporating the assembled components into the oil passage plates 2 and 3 and the operation of overlapping the oil passage plates 2 and 3 can be performed separately. That is, according to this embodiment, since the work at the time of assembly can be divided, the work efficiency can be improved as compared with the conventional example. Since the working efficiency is improved in this way, the manufacturing cost can be reduced.

Further, according to this embodiment, since only the same type of assembly parts are incorporated in each of the oil passage plates 1 to 5, different types of assembly are mounted on one oil passage plate. No parts are installed. Therefore, it is possible to prevent mistakes in assembling a different part by mistake or forgetting to assemble a necessary part during the assembling work.

In this embodiment, the bottom portions 25a, 28
a and the concave portion 31b constitute the component receiving portion of the present invention. If the component receiving portion is prevented from coming off, a convex portion or the like is formed on the inner periphery of the mounting hole, and the component is formed by the convex portion. You may comprise a receiving part.

[0028]

According to the first aspect of the present invention, since the component receiving portion is provided in the mounting hole of the oil passage plate and the component receiving portion regulates the detachment of the assembled component, the oil passage plates are connected to each other. Before overlapping, an assembly member can be previously installed in an assembly hole of each oil passage plate. Therefore, the work of assembling the assembled parts and the work of superposing the oil passage plate can be completely separated. In addition, since the work can be divided into tasks, the work efficiency at the time of assembly can be improved, and the manufacturing cost can be reduced accordingly.

According to the second invention, for each oil passage plate,
Since the type of the parts to be assembled is determined, it is possible to prevent mistakes in assembling an erroneous part in the oil passage plate or forgetting to incorporate a necessary part.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is an enlarged sectional view of oil passage plates 2 and 3;

FIG. 3 is an explanatory view showing an assembling procedure of an oil passage forming block.

FIG. 4 is a sectional view of a conventional example.

[Explanation of symbols]

1-5 Oil passage plate 6 Groove 7 Hole 25, 28, 31 Assembly hole 25a, 28a Bottom part 31b constituting part receiving part of this invention Concave part 27, part constituting part receiving part of this invention 27, 30, 33 of this invention Valve constituting part of assembly 32 Spring constituting part of assembly of the present invention

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H089 BB30 HH02 HH03 HH12 HH17 HH23 HH27 3J071 AA13 BB14 CC11 DD36 FF16

Claims (2)

[Claims] 1. A plurality of oil passage plates each having an oil passage formed of a groove, a hole, and the like, and an assembly hole for incorporating an assembly part such as a valve body and a spring, on a superposed surface of the plates. In the combined oil passage component block, an assembly hole is formed from one of the overlapping surfaces of the oil passage plate, and a component receiving portion is provided below the assembly hole to assemble the assembly component into the assembly hole. An oil passage forming block, wherein the removal of the oil passage is restricted by the component receiving portion. 2. An oil passage plate, wherein only the same kind of assembling members are assembled.
The described oilway construction block.