JP2011214604A - Valve assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the flexibility in arrangement of flow passages in a valve body while suppressing the enlargement of the valve body.SOLUTION: A solenoid valve 30 that constitutes a hydraulic control device 20 has a recessed part 33 formed on the outer circumference of a sleeve 32, which is a portion inserted into a valve insertion hole 24 of the lower half part 22 as a first body constituting the valve body 21. In the lower half part 22 of the valve body 21, a first flow passage 27a and a second flow passage 27b are formed separately from each other so as to each extend from a joint face 22a of the upper half part 23 side to the valve insertion hole 24 side and to be communicated with a space 28 partitioned by the solenoid valve 30, i.e., the recessed part 33 of the sleeve 32, and the inner surface of the valve insertion hole 24.

Description

  The present invention includes a solenoid valve, a first valve body having a valve insertion hole into which at least a part of the solenoid valve is inserted, and a second valve body joined to the first valve body. Concerning assembly.

  Conventionally, as this type of valve assembly, a switching valve that is provided in the first half of the valve body and switches the supply of the line pressure to the clutches C1 to C3 is overlapped with the first half via a separate plate. The one provided with the pressure regulating valve provided in the two half parts and connected to the clutch C1 is known (for example, refer to Patent Document 1). In this valve assembly, the base pressure port n of the pressure regulating valve on the second half side is opened so as to correspond to the two ports g and h of the switching valve on the first half side. By exchanging the first separate plate for communicating the pressure port n and the port g of the switching valve with the second separate plate for communicating the base pressure port n of the pressure regulating valve and the port h of the switching valve, the clutch C1 The combination of fastening and releasing of C3 can be changed. Further, in this valve body, the opening g of the switching valve on the first half side corresponds to the basic pressure port n of the pressure regulating valve on the second half side and the port m for feeding back the output pressure. Has been.

JP 2003-106443 A

  However, like the conventional valve assembly described above, in order to make one port of a certain valve correspond to the other two ports (flow paths), the one port must be enlarged, and the one port The valve body becomes larger by an amount corresponding to the increase in the angle, or the degree of freedom of the arrangement of the flow paths in the valve body is reduced.

  Therefore, the main object of the present invention is to increase the degree of freedom of flow path arrangement in the valve body while suppressing an increase in size of the valve body.

  The valve assembly according to the present invention adopts the following means in order to achieve the main object described above.

The valve assembly according to the present invention comprises:
A valve assembly comprising: a solenoid valve having a sleeve; and a valve body including a first body having a valve insertion hole into which the sleeve of the solenoid valve is inserted and a second body superimposed on the first body.
In the first body, a first flow path and a second flow path extending from the joint surface on the second body side to the valve insertion hole side are formed separately from each other,
A space for communicating the first flow path and the second flow path is defined by the sleeve and the inner surface of the valve insertion hole.

  The solenoid valve constituting the valve assembly has a sleeve inserted into the valve insertion hole of the first body constituting the valve body. Further, the first body is formed with a first flow path and a second flow path that extend from the joint surface on the second body side to the valve insertion hole side, respectively. In this valve assembly, a space for communicating the first flow path and the second flow path is defined by the sleeve of the solenoid valve and the inner surface of the valve insertion hole. Thus, the space defined by the sleeve of the solenoid valve inserted into the valve insertion hole of the first body and the inner surface of the valve insertion hole is used as a flow path connecting the first flow path and the second flow path. Thus, the volume of the portion between the first and second flow paths can be increased to make the portion a space that can be used effectively. As a result, in this valve assembly, it is possible to increase the degree of freedom of flow path arrangement in the valve body while suppressing an increase in the size of the valve body.

  In addition, a space between the first flow path and the second flow path of the first body is defined by the concave portion and the inner surface of the valve insertion hole while extending from the joint surface to the valve insertion hole side. It is preferable to form a third flow path that does not communicate with the space.

  Further, the first flow path and the second flow path are formed apart from each other in a direction orthogonal to the extending direction of the valve insertion hole, and each is orthogonal to the joint surface and the sleeve of the solenoid valve. May be disposed between two opposing surfaces that circumscribe each other. Thereby, the channel area of the first, second and third channels, the thickness of the wall between the first channel and the third channel, and the wall between the third channel and the second channel, etc. And the interference between the first flow path and the second flow path and the flow paths outside them can be suppressed.

  A recess may be formed on the outer periphery of the sleeve of the solenoid valve. Thus, by forming a recess in the solenoid valve sleeve and using the space defined by the recess and the inner surface of the valve insertion hole as a flow path connecting the first flow path and the second flow path, The volume of the portion between the valve insertion hole and the first and second flow paths can be made larger to make the portion a space that can be used effectively. However, instead of forming a recess in the solenoid valve sleeve, the diameter of the valve insertion hole portion that defines a space together with the solenoid valve sleeve may be increased.

  Furthermore, a port may be formed in the sleeve of the solenoid valve, and the recess may be formed around the port. Accordingly, it is possible to communicate the port with the two flow paths or the other two ports while effectively using the space between the first and second flow paths.

  The solenoid valve may be a linear solenoid valve including an electromagnetic part, a spool driven by the electromagnetic part, and the sleeve that slidably accommodates the spool in the axial direction.

A method for manufacturing a valve assembly according to the present invention includes:
A valve assembly comprising: a valve body including a first body having a valve insertion hole and a second body superimposed on the first body; and a solenoid valve having a sleeve inserted into the valve insertion hole of the first body. A manufacturing method of
The first body is formed with a first flow path and a second flow path extending from the joint surface on the second body side to the valve insertion hole side, respectively, and the sleeve and the inner surface of the valve insertion hole are formed Thus, a space for communicating the first flow path and the second flow path is defined.

  According to this method, the volume of the portion between the first and second flow paths can be increased so that the portion can be used as a space that can be effectively used. Therefore, the valve body can be prevented from being enlarged. It is possible to increase the degree of freedom of the arrangement of the flow paths. The valve insertion hole may be formed in the valve body before forming the first and second flow paths in the valve body, and may be formed in the valve body after forming the first and second flow paths in the valve body. It may be formed.

It is a schematic block diagram which shows the hydraulic control apparatus 20 as a valve assembly based on the Example of this invention. 3 is a cross-sectional view showing a main part of the hydraulic control device 20. FIG. 3 is a cross-sectional view showing a main part of the hydraulic control device 20. FIG. It is sectional drawing which shows the principal part of the hydraulic control apparatus 20B which concerns on a modification.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a schematic configuration diagram showing a hydraulic control device 20 as a valve assembly according to an embodiment of the present invention. The hydraulic control device 20 shown in the figure is attached to a power transmission device that transmits power from an engine (not shown) mounted on an automobile to a drive shaft (propeller shaft), and from an oil pan using power from the engine. It is connected to an oil pump OP that sucks and discharges hydraulic oil. The hydraulic control device 20 supplies and discharges hydraulic oil to and from a hydraulic friction engagement element such as a torque converter included in the power transmission device, a clutch or a brake of a transmission that is a CVT or a stepped automatic transmission.

  The hydraulic control device 20 of the embodiment includes a valve body 21 having a plurality of oil passages (not shown), a plurality of solenoid valves 30 that are attached to the valve body 21 and constitute a hydraulic circuit together with the oil passages of the valve body 21, A control module (not shown) for controlling the entire power transmission device including a plurality of regulator valves (not shown) and the hydraulic control device 20 is provided. The valve body 21 of the embodiment includes a lower half 22 as a first body having a plurality of oil passages, and an upper half as a second body having a plurality of oil passages and superimposed on the lower half 22. It consists of part 23. As shown in the figure, the lower half 22 has a valve insertion hole 24 into which the solenoid valve 30 is inserted, and communicates a valve portion of the corresponding solenoid valve 30 with an oil passage (not shown) formed in the valve body 21. A plurality of valve insertion portions 25 are provided. The upper half 23 is also formed with a valve insertion portion similar to the valve insertion portion 25, a cylinder insertion portion (not shown) into which a parking cylinder is inserted, and the like. The lower half 22 and the upper half 23 are joined via a center plate 26 having a plurality of openings that allow the oil passages of the lower half 22 and the upper half 23 to communicate with each other. The solenoid valve 30 includes a linear solenoid valve that regulates the hydraulic pressure, line pressure, etc. generated by the oil pump OP and supplies it to a plurality of hydraulic actuators (not shown), and a relay (not shown) that switches the supply destination of hydraulic oil. A duty solenoid valve (on / off solenoid valve) that outputs a driving pressure signal to the valve is included. Further, the valve insertion portion 25 may have a valve insertion hole 24 opened at only one end, and is configured to be partially opened to partially expose the solenoid valve 30 (sleeve). It may be a thing.

  2 and 3 are cross-sectional views showing the main parts of the hydraulic control device 20. As can be seen from these drawings, the solenoid valve 30 attached to the lower half 22 of the valve body 21 is inserted into a spool 31 driven by an electromagnetic part (not shown) and the valve insertion hole 24 of the lower half 22. And a sleeve 32 that slidably accommodates the spool 31 in the axial direction. As shown in FIGS. 2 and 3, the sleeve 32 of the solenoid valve 30 is formed with a port 32 a that serves as an inflow port or an outflow port for hydraulic oil. Further, a recess (groove) 33 is formed on the outer periphery of the portion of the sleeve 32 inserted into the valve insertion hole 24 so as to be located around (around) the port 32a. The recess 33 illustrated in FIGS. 2 and 3 has a bottom surface orthogonal to the center line of the port 32a orthogonal to the axis of the spool 31 and the sleeve 32.

  The lower half 22 as the first body extends from the joint surface 22a on the upper half 23 side to the valve insertion hole 24 side, and is defined by the recess 33 of the sleeve 32 and the inner surface of the valve insertion hole 24. The first flow path 27a and the second flow path 27b are spaced apart so as to communicate with the space 28 to be formed. In the embodiment, the first flow path 27a and the second flow path 27b are formed apart from each other in a direction parallel to the bonding surface 22a and perpendicular to the extending direction (axial center) of the valve insertion hole 24. It is disposed between two opposing surfaces P1 and P2 that are orthogonal to the surface 22a and circumscribe the sleeve 32, which is a portion inserted into the valve insertion hole 24 of the solenoid valve 30. And between the 1st flow path 27a and the 2nd flow path 27b of the lower half part 22, it extends to the valve insertion hole 24 side from the joint surface 22a, and is defined by the recessed part 33 and the inner surface of the valve insertion hole 24. A third flow path 27c that does not communicate with the space 28 is formed.

  Thereby, the first flow path 27a, the space 28 defined by the recess 33 of the solenoid valve 30 and the inner surface of the valve insertion hole 24, and the second flow path 27b form a series of flow paths. Therefore, when the port 32a is a working oil outlet, the working oil flowing out from the port 32a into the space 28 can be supplied to both the first flow path 27a and the second flow path 27b. Further, when the port 32a is a so-called feedback port, for example, a so-called feedback port, the working oil from one of the first flow path 27a and the second flow path 27b is supplied to the port 32a and the first flow path is provided. It becomes possible to supply to the other of 27a and the 2nd flow path 27b.

  As described above, the solenoid valve 30 constituting the hydraulic control device 20 as the valve assembly is a portion inserted into the valve insertion hole 24 of the lower half 22 as the first body constituting the valve body 21. A recess 33 is formed on the outer periphery of the sleeve 32. The lower half 22 extends from the joint surface 22a on the upper half 23 side toward the valve insertion hole 24, and is defined by the solenoid valve 30, that is, the recess 33 of the sleeve 32 and the inner surface of the valve insertion hole 24. The first flow path 27a and the second flow path 27b are spaced apart so as to communicate with the space 28. Thus, when the hydraulic control device 20 as a valve assembly is assembled, the space 28 defined by the first flow path 27a, the recess 33 of the solenoid valve 30 and the inner surface of the valve insertion hole 24, and the second flow path. 27b forms a series of flow paths. As described above, the recess 33 is formed on the outer periphery of the sleeve 32 of the solenoid valve 30 as the portion to be inserted into the valve insertion hole 24 of the lower half portion 22 and is defined by the recess 33 and the inner surface of the valve insertion hole 24. By using the space 28 as a flow path connecting the first flow path 27a and the second flow path 27b, the volume of the portion between the valve insertion hole 24, the first flow path 27a and the second flow path 27b As a result, the third flow path 27c that does not communicate with the space 28 can be formed in this space as in the above-described embodiment. As a result, in the hydraulic control device 20, it is possible to increase the degree of freedom of flow path arrangement in the valve body 21 while suppressing an increase in the size of the valve body 21. A recess is formed on the outer periphery of the solenoid valve 30 (sleeve or the like) to be inserted into the valve insertion hole of the upper half 23 and the upper half 23 extends from the joint surface on the lower half 22 side to the valve insertion hole side. It goes without saying that the two flow paths may be formed so as to extend and communicate with a space defined by the concave portion and the inner surface of the valve insertion hole.

  In addition, the first flow path 27a and the second flow path 27b of the above embodiment are formed in parallel with the joint surface 22a and spaced apart in a direction perpendicular to the extending direction of the valve insertion hole 24, and the joint surface 22a. Between the two opposing surfaces P1 and P2 that are orthogonal to each other and circumscribe the sleeve 32 that is inserted into the valve insertion hole 24 of the solenoid valve 30. Accordingly, the flow area of the first flow path 27a, the second flow path 27b, and the third flow path 27c, the space between the first flow path 27a and the third flow path 27c, and the third flow path 27c and the second flow While ensuring the thickness of the wall part between the path 27b, etc., it becomes possible to suppress the interference between the first flow path 27a and the second flow path 27b and the flow path and the like outside them.

  Further, by forming a recess 33 around the port 32a of the sleeve 32 inserted into the valve insertion hole 24 of the solenoid valve 30, the gap between the valve insertion hole 24, the first flow path 27a and the second flow path 27b is formed. While making effective use of the space, the port 32a communicates with two flow paths, that is, the first flow path 27a and the second flow path 27b, or the port 32a and the other two ports, that is, the first flow path. It is possible to communicate the port communicating with 27a and the port communicating with the second flow path 27b.

  In the above-described embodiment, the solenoid valve 30 having the concave portion 33 that defines the space 28 is used as a spool 31 driven by the electromagnetic portion, and the spool 31 is slidably accommodated in the axial direction and the port 32a is provided. Although the linear solenoid valve including the sleeve 32 having the sleeve is illustrated, the solenoid valve 30 having the recess 33 is not limited to the linear solenoid valve having the sleeve. That is, the recess that defines the space connecting the first flow path and the second flow path together with the inner surface of the valve insertion hole is, for example, the duty solenoid valve or the on / off solenoid valve in which a part of the valve casing is inserted into the valve insertion hole. You may form in a part of valve casing. Furthermore, the recess 33 that defines the space is not limited to the one formed around the port 32a of the solenoid valve 30 (sleeve 32). That is, as shown in FIG. 4, a recess 33 </ b> B is formed in a portion where the port (sleeve 32) of the solenoid valve 30 is inserted into the valve insertion hole 24, and the recess 33 </ b> B together with the inner surface of the valve insertion hole 24 You may make it define the space which connects the 1st flow path 27a and the 2nd flow path 27b. As a result, the volume of the portion between the valve insertion hole 24 and the first and second flow paths 27b can be increased to make the portion a space that can be used effectively. Moreover, in the said Example, what has a 2 division structure was illustrated as the valve body 21, However, The valve body 21 may be comprised by joining three or more bodies. In addition, although the hydraulic control device 20 of the above-described embodiment has been described as being applied to an automatic transmission mounted on an automobile, it is not limited thereto. That is, the present invention may be applied to a hydraulic control device that is mounted on a device other than an automobile.

  Here, the correspondence between the main elements of the embodiments and the modified examples and the main elements of the invention described in the column of means for solving the problems will be described. Examples and modifications include a solenoid valve 30, a lower half 22 having a valve insertion hole 24 into which at least a part of the solenoid valve 30 is inserted, and an upper half 23 superimposed on the lower half 22. The hydraulic control devices 20 and 20B including the valve body 21 correspond to a “valve assembly”, and the sleeve 32 inserted into the valve insertion hole 24 of the solenoid valve 30 corresponds to a “sleeve”. The first flow path 27a and the second flow path 27b are formed so as to extend from the joint surface 22a to the valve insertion hole 24 side and to communicate with the space 28 defined by the recess 33 and the inner surface of the valve insertion hole 24. It corresponds to “first flow path” and “second flow path”, and is formed between the first flow path 27a and the second flow path 27b of the lower half 22 and the valve is inserted from the joint surface 22a. A third flow path 27 c that extends toward the side 24 and does not communicate with the space 28 defined by the recess 33 and the inner surface of the valve insertion hole 24 corresponds to a “third flow path”, and is formed in the outer periphery of the sleeve 32. 33 and 33B correspond to “concave portions”.

  However, the correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. It is an example for specifically explaining the best mode for doing so, and does not limit the elements of the invention described in the column of means for solving the problem. In other words, the examples are merely specific examples of the invention described in the column of means for solving the problem, and the interpretation of the invention described in the column of means for solving the problem is described in the description of that column. Should be done on the basis.

  The embodiments of the present invention have been described above using the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. Needless to say.

  The present invention can be used in the manufacturing industry of valve assemblies such as hydraulic control devices.

  20, 20B Hydraulic control device, 21 Valve body, 22 Lower half, 22a Joint surface, 23 Upper half, 24 Valve insertion hole, 25 Valve insertion portion, 26 Center plate, 27a First flow path, 27b Second flow Path, 27c 3rd flow path, 28 space, 30 solenoid valve, 31 spool, 32 sleeve, 32a port, 33, 33B recess, OP oil pump.

Claims (7)

A valve assembly comprising: a solenoid valve having a sleeve; and a valve body including a first body having a valve insertion hole into which the sleeve of the solenoid valve is inserted and a second body superimposed on the first body.
In the first body, a first flow path and a second flow path extending from the joint surface on the second body side to the valve insertion hole side are formed separately from each other,
The valve assembly is characterized in that a space for communicating the first flow path and the second flow path is defined by the sleeve and the inner surface of the valve insertion hole. The valve assembly according to claim 1, wherein
A space that extends from the joint surface to the valve insertion hole side and is defined by the recess and the inner surface of the valve insertion hole between the first flow path and the second flow path of the first body. A valve assembly characterized in that a third flow path that does not communicate with the valve is formed. The valve assembly according to claim 2, wherein
The first flow path and the second flow path are formed apart from each other in a direction orthogonal to the extending direction of the valve insertion hole, and are orthogonal to the joint surface and circumscribed with the sleeve of the solenoid valve. A valve assembly disposed between two opposing surfaces. The valve assembly according to any one of claims 1 to 3,
A valve assembly characterized in that a recess is formed on an outer periphery of the sleeve of the solenoid valve. The valve assembly according to claim 4, wherein
A port assembly is formed in the sleeve of the solenoid valve, and the concave portion is formed around the port. The valve assembly according to any one of claims 1 to 5,
2. The valve assembly according to claim 1, wherein the solenoid valve is a linear solenoid valve including an electromagnetic part, a spool driven by the electromagnetic part, and the sleeve that slidably accommodates the spool in the axial direction. A valve assembly comprising: a valve body including a first body having a valve insertion hole and a second body superimposed on the first body; and a solenoid valve having a sleeve inserted into the valve insertion hole of the first body. A manufacturing method of
The first body is formed with a first flow path and a second flow path extending from the joint surface on the second body side to the valve insertion hole side, respectively, and the sleeve and the inner surface of the valve insertion hole are formed A method for manufacturing a valve assembly, wherein a space for communicating the first flow path and the second flow path is defined.

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