JP6672598B2 - Spool switching valve device - Google Patents

Description

  The present invention relates to a spool switching valve device.

  For example, Patent Document 1 discloses a switching structure of a hydraulic circuit in an automatic transmission or the like of an automobile. The switching structure described in Patent Literature 1 is a structure in which one output port is paired with two input ports and provided in a cylindrical housing having one bottom in the longitudinal direction. Inside the housing, a pair of one end and the other end side pistons having one end and the other end side valve body and a valve seat, respectively, and a housing part for housing the valve body and the piston are provided. When the oil pressure on one input port side is higher than the oil pressure on the other input port side, the piston moves to the other input port side. When the piston moves, the valve seat on the other side comes into contact with the valve element provided on the other input port side to close the flow path on the other input port side, and the oil introduced from one input port is removed from the housing. It passes through the internal flow path and is led to the output port.

JP-A-63-38775

  However, in the conventional structure as described above, when assembling the switching valve, it is necessary to insert and assemble a number of members such as a valve body, a piston, a spring, and a bar in a predetermined order from the opening of the housing. As a result, the assembling work requires skill and there is a problem in workability. When a plurality of switching valves are provided, the problem of workability further increases.

  SUMMARY OF THE INVENTION The present invention has been made in consideration of the above points, and has as its object to provide a spool switching valve device that can improve assembling workability.

One aspect of the spool switching valve device of the present invention is a column-shaped spool housing having two hollow holes opened toward the center along the axial direction from both ends in the axial direction, and having the axial direction as a longitudinal direction. And a spool switching valve device including a spherical valve element disposed in the hollow hole, wherein the spool housing is provided at the innermost portion of each of the hollow holes and penetrates a side surface of the spool housing. A first input port hollow portion connected to the outside, a valve body movable portion provided adjacent to the first input port hollow portion of each of the hollow holes, and accommodating the valve body so as to be movable in the axial direction; A first valve seat provided at a boundary between each valve body movable part and each first input port cavity, and opened and closed between each valve body movable part and each first input port cavity by the valve body. And the most front end of each of the hollow holes adjacent to each of the valve body movable parts. And a valve seat mounting portion on which a valve seat member provided with a second valve seat portion is radially overlapped and mounted, and each of the valve seat members is provided with the valve of the valve seat member. A second input port having a cylindrical portion provided with a hole at the center as viewed in the axial direction on the body movable portion side, and a passage to the outside on a side of the hole portion opposite to the valve body movable portion; A second portion, wherein the valve element is fitted to the valve element movable section side of the hole, and the valve element opens and closes between the valve element movable section and each of the second input port sections. A valve seat portion is disposed, each of the valve body movable portions includes an output port that penetrates the side surface of the spool housing and communicates with the outside at a central portion of a movement range of the valve body, and each of the valve seat members includes the spool. An engagement receiving portion fixed to the housing by caulking, wherein each of the valve seat members prevents each of the valve seat members from falling off from the valve seat mounting portion; A, the spool housing, the opposite ends of the axial, and plastic deformation have a engaging portion entering the respective engaging receiving portion by oppositely disposed crimping in the radial direction, the spool chassis The valve seat member located on one side in the axial direction of the body has a groove at an outer end in the axial direction, extending in a cross shape as viewed from the axial direction and opening to the outer peripheral surface of the valve seat member. Then, the engaging portions which are opposed in the radial direction on one side in the axial direction of the spool housing enter the groove portions from the radial outside of the valve seat member.
Another aspect of the spool switching valve device of the present invention is a column-shaped spool having two hollow holes opened toward the center along the axial direction from both ends in the axial direction, and having the longitudinal direction in the axial direction. In a spool switching valve device including a housing and a spherical valve body disposed in the hollow hole, the spool housing is provided at the innermost portion of each of the hollow holes, and penetrates a side surface of the spool housing. A first input port cavity portion connected to the outside, and a valve body movable portion provided adjacent to the first input port cavity portion of each of the cavity holes and accommodating the valve body movably in the axial direction. A first portion provided at a boundary between each of the valve body movable portions and each of the first input port cavities, and between the valve body movable portions and each of the first input port cavities being opened and closed by the valve body; A valve seat portion, and a first end of each hollow hole adjacent to each valve body movable portion. A valve seat mounting portion provided at an end portion, wherein a valve seat member having a second valve seat portion is radially overlapped and mounted, and each of the valve seat members is provided with a corresponding one of the valve seat members. On the valve body movable portion side, there is provided a cylindrical portion having a hole at the center as viewed in the axial direction, and a second side of the hole portion opposite to the valve body movable portion is a passage to the outside. An input port portion, wherein the valve element is fitted to the valve element movable section side of the hole, and the valve element opens and closes between the valve element movable section and each of the second input port sections. A second valve seat portion is disposed, each of the valve body movable portions includes an output port that penetrates the side surface of the spool housing and communicates with the outside at a central portion of a movement range of the valve body, and each of the valve seat members includes: The spool housing is fixed to the spool housing by caulking, and the spool housing is mounted to the valve seat mounting portion at one end in the axial direction. The valve seat member has an engagement receiving portion for preventing the valve seat member from dropping off, and the valve seat member attached to one end in the axial direction of the spool housing is attached to a tip of the spool housing side. An engagement portion is provided which is plastically deformed by tightening and enters the engagement receiving portion.

A second aspect of the spool switching valve device of the present invention includes a hollow hole opened toward the center from both ends in the axial direction toward the center, a columnar spool housing having the axial direction as a longitudinal direction, In the spool switching valve device including the spherical valve element disposed in the hollow hole, the spool housing is provided at the innermost portion of each of the hollow holes, and penetrates a side surface of the spool housing and is connected to the outside. A first input port cavity portion, a valve body movable portion provided adjacent to the first input port cavity portion of each cavity hole, and accommodating the valve body movably in the axial direction; A first valve seat portion provided at a boundary between the portion and each of the first input port cavities, wherein the valve body opens and closes each of the valve body movable portions and each of the first input port cavities; It is provided at the foremost end of each of the hollow holes adjacent to each valve body movable portion, And a valve seat mounting portion on which a valve seat member having two valve seat portions is mounted in a radially overlapping manner, and each of the valve seat members has a hole at the center on the valve body movable portion side. A second input port portion serving as a passage with the outside of the hole portion on the side opposite to the valve body movable portion, wherein the valve is provided on the valve body movable portion side of the hole portion. The second valve seat portion is disposed in which a body fits and opens and closes between each of the valve body movable portions and each of the second input port portions by the valve body.
Each of the valve body movable portions includes an output port that penetrates the side surface of the spool housing and communicates with the outside at a central portion of a movement range of the valve body, and each of the valve seat members is fixed to the spool housing by press fitting. It is characterized by that.

  According to the present invention, it is possible to provide a spool switching valve device with improved assembling workability.

FIG. 1 is an external perspective view of a spool switching valve device 1 according to a first embodiment of the present invention. It is sectional drawing which cut | disconnected the switching unit with which a spool switching valve apparatus is mounted in ZX plane. FIG. 10 is a partially enlarged view of the vicinity of the −X side end of the spool housing 10. FIG. 10 is a partially enlarged view of the vicinity of the −X side end of the spool housing 10. FIG. 4 is a partially enlarged view of the vicinity of an end on the + X side of a spool housing 10. FIG. 4 is a partially enlarged view of the vicinity of an end on the + X side of a spool housing 10. It is the figure which looked at the spool switching valve device 1 from the -X side. It is the figure which looked at the spool switching valve device 1 from the -X side. It is an appearance perspective view of 1A of spool switching valve devices concerning a 2nd embodiment of the present invention. It is sectional drawing which cut | disconnected the switching unit with which the spool switching valve device of 2nd Embodiment is mounted in ZX plane. It is the elements on larger scale which show the modification of a spool switching valve apparatus. It is the elements on larger scale which show the modification of a spool switching valve apparatus.

  Hereinafter, an embodiment of a spool switching valve device of the present invention will be described with reference to FIGS. FIG. 1 is an external perspective view of the spool switching valve device 1.

[First Embodiment]
In the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. The X-axis direction is a longitudinal direction of the cylindrical spool switching valve device 1 shown in FIG. 1 and is a direction parallel to an axis AX along a direction in which the hollow holes 20 and 30 described later extend. The Z-axis direction is a direction in which first input ports 41 and 141, second input port units 42 and 142, and output ports 43 and 143, which will be described later, extend around the axis AX. The Y-axis direction is a direction orthogonal to the Z-axis direction and the X-axis direction. In the following description, a direction orthogonal to the axis AX is referred to as a radial direction.

  FIG. 2 is a cross-sectional view of the switching unit 100 in which the spool switching valve device 1 is mounted on the body BD, cut along a ZX plane.

[Spool switching valve device 1]
The spool switching valve device 1 includes a spool housing 10, valve seat members 60 and 70, and valve bodies B1 and B2. The valve bodies B1 and B2 are spherical.

  The spool housing 10 has a columnar shape. The spool housing 10 includes hollow holes 20 and 30 coaxially formed from both ends in the X-axis direction along the X-axis direction toward the center in the X-axis direction. The spool housing 10 includes engaging portions 61 and 71 at both ends in the X-axis direction.

  The hollow hole 20 and the hollow hole 30 are separated in the X-axis direction by a partition wall 11 provided at the center of the spool housing 10 in the X-axis direction. The hollow hole 20 includes a first input port hollow portion 21, a valve body movable portion 22, a first valve seat portion 23, and a valve seat mounting portion 81. The hollow hole 30 includes a first input port hollow portion 31, a valve body movable portion 32, a first valve seat portion 33, and a valve seat mounting portion 181. That is, the spool housing 10 is provided with the first input port hollow portions 21 and 31, the valve body movable portions 22 and 32, the first valve seat portions 23 and 33, and the valve seat mounting portions 81 and 181.

  The first input port cavity 21 is provided at the innermost side of the cavity 20. The first input port cavity 21 penetrates the side surface of the spool housing 10 and is connected to the outside. The first input port cavity 21 includes a cavity 21A extending in the X-axis direction and a first input port 41 extending in the Z-axis direction. The cavity 21A has a circular cross section. The diameter of the hollow portion 21A is smaller than the diameter of the valve body B1. On the outer peripheral surface 10a of the spool housing 10, a groove portion 91 is provided annularly in the circumferential direction. The first input port 41 extends toward the center in the radial direction, the center side is open to the cavity 21A, and the outside is open to the bottom of the groove 91. That is, the first input port 41 connects the outside of the spool housing 10 to the hollow portion 21A.

  The valve body movable portion 22 is provided adjacent to the first input port cavity portion 21 on the −X side. The valve body movable portion 22 extends in the X-axis direction, and accommodates the valve body B1 movably in the axis AX direction. The cross section of the valve body movable section 22 is circular. The diameter of the valve body movable part 22 is larger than the diameter of the valve body B1. The valve body movable section 22 has an output port 43. The output port 43 is arranged in a central region of the moving range of the valve body B1 in the X-axis direction. The output port 43 extends in the Z-axis direction. The output port 43 penetrates the side surface of the spool housing 10 and communicates with the outside. On the outer peripheral surface 10a of the spool housing 10, a groove 93 is provided in a ring shape in the circumferential direction. The output port 43 extends toward the center in the radial direction, the center side is open to the valve body movable portion 22, and the outside is open to the bottom of the groove portion 93. That is, the output port 43 connects the outside of the spool housing 10 and the valve body movable section 22.

  The first valve seat portion 23 is provided at a boundary between the valve body movable portion 22 and the first input port cavity 21. The first valve seat portion 23 includes an inclined surface 51 that expands toward the −X side. The inclined surface 51 is inclined at, for example, 45 degrees with respect to the axis AX. The first valve seat portion 23 opens and closes between the valve body movable portion 22 and the first input port hollow portion 21 depending on the presence or absence of contact with the valve body B1.

  The valve seat mounting portion 81 is provided at the foremost end of the hollow hole 20 adjacent to the −X side of the valve body movable portion 22. The valve seat mounting portion 81 extends in the X-axis direction, and the valve seat member 60 is mounted. The valve seat mounting portion 81 has a circular cross section. The diameter of the valve seat mounting part 81 is larger than the diameter of the valve body movable part 22. The valve seat mounting portion 81 includes a step portion 81a at which the valve seat member 60 abuts on the innermost side. The depth of the valve seat mounting portion 81 up to the step portion 81a is smaller than the length of the valve seat member 60 in the X-axis direction.

FIG. 3 is a partially enlarged view near the −X side end of the spool housing 10.
The engagement portion 61 is arranged on the −X side with respect to the slit S <b> 1 penetrating the spool housing 10 in the radial direction. As shown in FIG. 1, the slit S <b> 1 is provided with the same length as the engaging portion 61 along the circumferential direction. That is, the engaging portion 61 is separated from the spool housing 10 by the slit S1 in the X-axis direction. The engagement portions 61 are arranged at two locations facing each other in the radial direction.

  Returning to FIG. 2, the first input port cavity 31 is provided on the innermost side of the cavity 30. The first input port cavity 31 penetrates the side surface of the spool housing 10 and is connected to the outside. The first input port cavity 31 includes a cavity 31A extending in the X-axis direction and a first input port 141 extending in the Z-axis direction. The hollow portion 31A has a circular cross section. The diameter of the hollow portion 31A is smaller than the diameter of the valve body B2. On the outer peripheral surface 10a of the spool housing 10, a groove portion 191 is provided in an annular shape in the circumferential direction. The first input port 141 extends toward the center in the radial direction, the center side is open to the hollow portion 31A, and the outside is open to the bottom of the groove portion 191. That is, the first input port 141 connects the outside of the spool housing 10 to the hollow portion 31A.

  The valve body movable portion 32 is provided adjacent to the first input port cavity portion 31 on the + X side. The valve body movable portion 32 extends in the X-axis direction, and accommodates the valve body B2 movably in the axis AX direction. The valve body movable portion 32 has a circular cross-sectional shape. The diameter of the valve body movable part 32 is larger than the diameter of the valve body B2. The valve body movable section 32 includes an output port 143. The output port 143 is arranged in a central region of the movement range of the valve body B2 in the X-axis direction. The output port 143 extends in the Z-axis direction. The output port 143 penetrates the side surface of the spool housing 10 and communicates with the outside. On the outer peripheral surface 10a of the spool housing 10, a groove 193 is provided in a ring shape in the circumferential direction. The output port 143 extends toward the center in the radial direction, the center side is open to the valve body movable portion 32, and the outside is open to the bottom of the groove portion 193. That is, the output port 143 connects the outside of the spool housing 10 and the valve body movable section 32.

  The first valve seat portion 33 is provided at a boundary between the valve body movable portion 32 and the first input port hollow portion 31. The first valve seat 33 includes an inclined surface 52 that expands toward the + X side. The inclined surface 52 is inclined at, for example, 45 degrees with respect to the axis AX. The first valve seat portion 33 opens and closes between the valve body movable portion 32 and the first input port cavity 31 depending on whether or not the valve body B2 is in contact.

  The valve seat mounting portion 181 is provided at the foremost end of the hollow hole 30 adjacent to the + X side of the valve body movable portion 32. A valve seat member 70 extending in the X-axis direction is mounted on the valve seat mounting portion 181. The valve seat mounting portion 181 has a circular cross section. The diameter of the valve seat mounting part 181 is larger than the diameter of the valve body movable part 32. The valve seat mounting portion 181 includes a step portion 181a at which the valve seat member 70 abuts on the innermost side. The depth of the valve seat mounting portion 181 up to the step portion 181a is smaller than the length of the valve seat member 70 in the X-axis direction. The valve seat mounting portion 181 includes a groove portion 192 provided in the outer peripheral surface 10a of the spool housing 10 in a circular shape in the circumferential direction. The valve seat mounting portion 181 has a through portion 182 that extends toward the center in the radial direction, the center side opens to the valve seat mounting portion 181, and the outside opens to the bottom of the groove portion 192. That is, the penetrating portion 182 penetrates the side surface of the spool housing 10 and communicates with the outside.

FIG. 5 is a partially enlarged view near the + X side end of the spool housing 10.
The engaging portion 71 is disposed on the + X side of the slit S2 penetrating the spool housing 10 in the radial direction. As shown in FIG. 1, the slit S2 is provided at the same length as the engaging portion 71 along the circumferential direction. That is, the engaging portion 71 is separated from the spool housing 10 by the slit S2 in the X-axis direction. The engaging portions 71 are arranged at two locations facing each other in the radial direction.

  The valve seat member 60 shown in FIG. 3 has a cylindrical tubular portion 63 having a hole 161 at the center and extending in the X-axis direction. The hole 161 is a through hole. The valve seat member 60 includes a second input port 42 serving as a passage to the outside at an end of the hole 161 opposite to the valve body movable portion 22. When the valve seat member 60 is mounted on the valve seat mounting portion 81 of the spool housing 10 and the end on the valve body movable portion 22 side abuts against the step portion 81a, the valve seat member 60 is connected to the valve seat. It is provided at a position protruding from the end on the −X side of the mounting portion 81.

FIG. 7 is a view of the spool switching valve device 1 viewed from the −X side. As shown in FIG. 7, the second input port 42 includes a groove 60A that intersects the axis AX. The groove 60A is provided in a cross shape in a plan view. Of the grooves 60A, the grooves provided at the same position in the circumferential direction as the engaging portions 61 are provided when the valve seat members 60 are mounted on the spool housing 10 and the engaging portions 61 enter into the valve seat members 60. Is an engagement receiving portion 62 for preventing the falling of the second member. That is, the engagement receiving portion 62 is provided at a position overlapping the engagement portion 61 in the radial direction. As shown in FIG. 3, the engagement receiving portion 62 has a depth such that the bottom portion is located on the + X side of the engagement portion 61 in the X-axis direction. The valve seat member 60 has a second valve seat 53 on the side of the valve body movable portion 22 in the hole 161. The second valve seat 53 is inclined in a direction in which the diameter increases toward the + X side. The second valve seat 53 is inclined at, for example, 45 degrees with respect to the axis AX. The second valve seat portion 53 is fitted with the valve body B1, and opens and closes between the valve body movable section 22 and the second input port section 42 by the valve body B1.

  The valve seat member 70 shown in FIG. 5 includes a cylindrical portion 64 having a hole 171 at the center and extending in the X-axis direction, and a plug portion 65 provided on the + X side of the cylindrical portion 64. The cylindrical portion 64 fits into the valve seat mounting portion 181 of the spool housing 10. The length of the cylindrical portion 64 is longer than the depth of the valve seat mounting portion 181. That is, the cylindrical portion 64 has a length that is inserted into the valve seat mounting portion 181 and protrudes from the valve seat mounting portion 181 when the distal end abuts on the step portion 181a. When the valve seat member 70 is mounted on the spool housing 10, the tubular portion 64 is provided with an engagement receiving portion 72 that receives the engaging portion 71 and prevents the valve seat member 70 from dropping off. The engagement receiving portion 72 is a depression provided at a position overlapping the engagement portion 71 in the radial direction. The plug portion 65 has an outer peripheral surface 65a having the same diameter as the outer peripheral surface 10a of the spool housing 10.

  The valve seat member 70 has a hole 171 extending in the X-axis direction on the valve body movable portion 32 side. The hole 171 has a bottom. The valve seat member 70 has a through portion 183 connected to the through portion 182 of the spool housing 10. The penetrating portion 183 penetrates the cylindrical portion 64 in the radial direction and is connected to the penetrating portion 182. The penetrating part 182 and the penetrating part 183 are included in the second input port part 142. That is, the second input port portion 142 extends in the radial direction, connects the outside of the spool housing 10 and the hole 171, and forms a passage to the outside.

  The valve seat member 70 has a second valve seat 54 on the side of the valve body movable portion 32 in the hole 171. The second valve seat portion 54 is inclined in a direction in which the diameter increases toward the −X side. The second valve seat 54 is inclined at, for example, 45 degrees with respect to the axis AX. The second valve seat 54 is fitted with the valve body B2, and opens and closes between the valve body movable part 32 and the second input port 142 by the valve body B2.

[Body BD]
As shown in FIG. 2, the body BD has a cylindrical shape provided with a hollow portion 110 extending in the X-axis direction from the end on the + X side. The bottom 111 of the cavity 110 has a bottom surface 112 parallel to the ZY plane. The spool switching valve device 1 is inserted into the hollow portion 110 from the end on the + X side. The length of the cavity 110 in the X-axis direction is the same as the entire length of the spool switching valve device 1. The inner peripheral surface of the hollow portion 110 is fitted with the outer peripheral surface 10 a of the spool housing 10 and the outer peripheral surface 65 a of the plug portion 65 of the valve seat member 70. A sealing material (not shown) is provided between the outer peripheral surface 65a of the plug 65 and the inner peripheral surface of the cavity 110 as appropriate. The sealing material is, for example, an O-ring.

The body BD includes connection holes 121, 122, 123, 124, 125, and 126 that connect the outside of the body BD and the cavity 110. Each connection hole 121, 122, 123, 124, 125, 126 extends in a direction orthogonal to the axis AX. The connection hole 121 is arranged at the same position as the first input port 41 in the X-axis direction and the direction around the axis AX. The connection hole 122 is arranged at the same position as the second input port unit 42 in the X-axis direction and the direction around the axis AX. The connection hole 123 is arranged at the same position as the output port 43 in the X-axis direction and the direction around the axis AX. The connection hole 124 is arranged at the same position as the first input port 141 in the X-axis direction and the direction around the axis AX. The connection hole 125 is arranged at the same position as the second input port unit 142 in the X-axis direction and the direction around the axis AX. The connection hole 126 is arranged at the same position as the output port 143 in the X-axis direction and the direction around the axis AX.

  Oil or a liquid such as automatic transmission fluid (hereinafter referred to as oil) is introduced into the connection hole 121 from the first introduction portion 131. Oil is introduced into the connection hole 122 from the second introduction part 132. From the connection hole 123, the oil of the valve body movable portion 22 is discharged to the first discharge portion 133. Oil is introduced into the connection hole 124 from the third introduction part 134. Oil is introduced into the connection hole 125 from the fourth introduction portion 135. From the connection hole 126, the oil of the valve body movable portion 22 is discharged to the second discharge portion 136.

The assembly of the spool switching valve device 1 will be described.
For example, the valve body B1 is housed in the valve body movable section 22 of the spool housing 10. The valve seat member 60 is mounted on the −X side end of the spool housing 10 in which the valve body B1 is stored. Next, the valve body B2 is housed in the valve body movable portion 32 of the spool housing 10. The valve seat member 70 is mounted on the + X side end of the spool housing 10 in which the valve body B2 is housed.

The operation of accommodating the valve body B1 in the valve body movable portion 22 and the operation of mounting the valve seat member 60 on the spool housing 10 are performed in a state where the spool housing 10 is vertically oriented so that the hollow holes 20 are directed upward. Is preferred. Since the valve element B1 inserted into the valve element movable section 22 is held by the first valve seat section 23 by its own weight, the operation of mounting the valve seat member 60 on the spool housing 10 can be performed smoothly. The operation of accommodating the valve body B2 in the valve body movable portion 32 and the operation of mounting the valve seat member 70 on the spool housing 10 are performed in a state where the spool housing 10 is vertically oriented so that the hollow holes 30 face upward. Is preferred. Since the valve element B2 inserted into the valve element movable section 32 is held by the first valve seat section 33 by its own weight, the operation of mounting the valve seat member 70 on the spool housing 10 can be performed smoothly.

  When mounting the valve seat member 60 on the valve seat mounting portion 81 of the spool housing 10, the cylindrical portion 63 of the valve seat member 60 is inserted into the valve seat mounting portion 81. When the distal end of the cylindrical portion 63 abuts against the step portion 81a, the engaging portions 61 of the spool housing 10 are caulked with a tool in a direction approaching each other in the radial direction as indicated by an arrow AR in FIG. Since the engaging portion 61 is separated from the spool housing 10 by the slit S1 and has lower strength than other portions, the engaging portion 61 is plastically deformed and enters the engaging receiving portion 62 as shown in FIGS. The engagement portion 61 that has entered the engagement receiving portion 62 is located on the −X side, which is the direction in which the valve seat member 60 is removed from the spool housing 10 with respect to the valve seat member 60. Therefore, the valve seat member 60 is prevented from dropping from the spool housing 10. Since the engaging portions 61 are arranged to face each other in the radial direction, for example, a caulking operation using a tool having a pair of pressing portions facing each other can be effectively performed.

When mounting the valve seat member 70 on the valve seat mounting portion 181 of the spool housing 10, the tubular portion 64 of the valve seat member 70 is inserted into the valve seat mounting portion 181. When the tip of the cylindrical portion 64 abuts the step portion 181a, the engaging portions 71 of the spool housing 10 are caulked in a direction approaching each other in the radial direction using a tool. Since the engaging portion 71 is separated from the spool housing 10 by the slit S2 and has lower strength than other portions, it is plastically deformed and enters the engaging receiving portion 72 as shown in FIG. The engaging portion 71 that has entered the engagement receiving portion 72 is located on the + X side, which is the direction in which the valve seat member 70 comes off from the spool housing 10 with respect to the valve seat member 70. Therefore, the valve seat member 70 is prevented from dropping from the spool housing 10. Since the engaging portions 71 are arranged so as to face each other in the radial direction, for example, a caulking operation using a tool having a pair of pressing portions facing each other can be effectively performed.

  When the spool switching valve device 1 is assembled, as shown in FIG. 2, the spool switching valve device 1 is inserted into the hollow portion 110 of the body BD. The switching unit 100 is assembled by inserting the spool switching valve device 1 into the hollow portion 110 of the body BD.

  In the switching unit 100 described above, the oil introduced by the first hydraulic pressure from the first introduction part 131 passes through the connection hole 121, the groove part 91, the first input port 41, and the hollow part 21A in order, and the valve body movable part 22 Will be introduced. Oil introduced by the second hydraulic pressure from the second introduction part 132 is introduced into the valve body movable part 22 through the connection hole 122, the second input port part 42, and the hole part 161 in order. In the switching unit 100 described above, the oil introduced by the third hydraulic pressure from the third introduction part 134 passes through the connection hole 124, the groove part 191, the first input port 141, and the hollow part 31A in order, and the valve body movable part 32 Will be introduced. The oil introduced by the fourth hydraulic pressure from the fourth introduction part 135 passes through the connection hole 125, the groove part 192, the second input port part 142, the penetration part 182, the penetration part 183, and the hole part 171 in order, and the valve body moves. It is introduced into the unit 32.

  For example, when the first oil pressure introduced from the first input port 41 is higher than the second oil pressure introduced from the second input port section 42, the valve element B1 is connected to the first oil pressure and the second oil pressure. It moves to the −X side due to the pressure difference from the oil pressure and fits in the second valve seat 53. When the valve body B1 fits into the second valve seat 53, the space between the second input port section 42 and the valve body movable section 22 is closed. Therefore, it is possible to select an oil passage through which the oil introduced from the first introduction part 131 to the valve body movable part 22 is discharged to the first discharge part 133 through the output port 43, the groove 93, and the connection hole 123 in order. When the second oil pressure is higher than the first oil pressure, the valve body B1 moves to the + X side due to the pressure difference between the first oil pressure and the second oil pressure and fits on the first valve seat 23. When the valve body B1 fits into the first valve seat 23, the space between the first input port cavity 21 and the valve body movable part 22 is closed. Therefore, it is possible to select an oil passage through which the oil introduced from the second introduction part 132 into the valve body movable part 22 passes through the output port 43, the groove 93, and the connection hole 123 and is discharged to the first discharge part 133.

  For example, when the third oil pressure introduced from the first input port 141 is higher than the fourth oil pressure introduced from the second input port portion 142, the valve element B2 sets the third oil pressure to the fourth oil pressure. It moves to the + X side due to the pressure difference from the oil pressure and fits in the second valve seat 54. When the valve body B2 fits into the second valve seat 54, the space between the second input port portion 142 and the valve body movable portion 32 is closed. Therefore, it is possible to select an oil passage through which the oil introduced from the third introduction portion 134 into the valve body movable portion 32 is sequentially discharged through the output port 143, the groove portion 193, and the connection hole 126 to the second discharge portion 136. When the fourth hydraulic pressure is higher than the third hydraulic pressure, the valve body B2 moves to the −X side due to the pressure difference between the third hydraulic pressure and the fourth hydraulic pressure and fits in the first valve seat 33. . When the valve body B2 fits into the first valve seat 33, the space between the first input port cavity 31 and the valve body movable section 32 is closed. Therefore, it is possible to select an oil passage through which the oil introduced from the fourth introduction part 135 to the valve body movable part 32 passes through the output port 143, the groove part 193, and the connection hole 126, and is discharged to the second discharge part 136.

As described above, the spool switching valve device 1 of the present embodiment accommodates the valve body B1 in the hollow hole 20 of the spool housing 10, accommodates the valve body B2 in the hollow hole 30, and includes the valve seat member in the spool housing 10. Since the assembly is completed by attaching 60, 70, the assembly workability can be improved. In the spool switching valve device 1 of the present embodiment, the engaging portion 61 of the spool housing 10 enters the engaging receiving portion 62 of the valve seat member 60, and the engaging portion 71 of the spool housing 10 engages with the engaging receiving portion of the valve seat member 70. It is possible to easily prevent the valve seat members 60 and 70 from falling off by entering the portion 72. In the spool switching valve device 1 of the present embodiment, since the engaging portions 61 and 71 are plastically deformed by caulking and enter the engaging receiving portions 62 and 72, the work of preventing the valve seat members 60 and 70 from falling off is easy. Can be done.

In the spool switching valve device 1 of the present embodiment, since the movement accompanying the switching of the oil passage is only the valve bodies B1 and B2, the switching of the oil passage can be performed quickly, and the spool switching valve device 1 The size and weight can be reduced. In the spool switching valve device 1 of the present embodiment, grooves 91, 93, 191, and 193 are annularly provided on the outer peripheral surface of the spool housing 10, and the first input port 41 and the output port 43 are respectively provided in the grooves 91, 93, 191, and 193. Since the first input port 141 and the output port 143 are open, the positions of the connection holes 121, 123, 124, and 126 of the body BD around the axis AX are respectively set to the first input port 41, the output port 43 , and the first input. There is no need to match the positions of the port 141 and the output port 143 . Therefore, the spool switching valve device 1 of the present embodiment does not restrict the positions of the connection holes 121, 123, 124, and 126 of the body BD in the direction around the axis AX, and increases the degree of freedom in designing the body BD. be able to.

[Second embodiment of spool switching valve device]
A second embodiment of the spool switching valve device will be described with reference to FIGS.
In these drawings, the same components as those of the first embodiment shown in FIGS. 1 to 8 are denoted by the same reference numerals, and description thereof will be omitted.
The spool switching valve device 1A of the second embodiment is different from the first embodiment in that the valve seat members 160, 170 are mounted on the spool housing 10 and that the same valve seat members 160, 170 are used.

  A wall portion 12 having an outer diameter smaller than the outer peripheral surface 10a is provided at an end portion on the −X side of the spool housing 10. A wall portion 13 having an outer diameter smaller than the outer peripheral surface 10a is provided at an end portion on the + X side of the spool housing 10. A valve seat mounting portion 81 is provided on the inner peripheral side of the wall portion 12. A valve seat mounting portion 181 is provided on the inner peripheral side of the wall portion 13.

  The valve seat member 160 has a cylindrical portion 163 mounted on the valve seat mounting portion 81 of the spool housing 10. The cylindrical portion 163 is press-fitted into the valve seat mounting portion 81. That is, the valve seat member 160 is pressed into the spool housing 10 and fixed. The press fitting of the valve seat member 160 and the spool housing 10 is performed by inserting a cylindrical portion 163 having an outer diameter larger than the inner diameter of the valve seat mounting portion 81 into the valve seat mounting portion 81. The inner diameter of the valve seat mounting portion 81 and the outer diameter of the cylindrical portion 163 are set so that the valve seat member 160 is not affected by the pressure difference between the first oil pressure and the second oil pressure described in the first embodiment. Is a size that does not fall off from the spool housing 10.

The valve seat member 170 attached to the + X end of the spool housing 10 has the same shape as the valve seat member 160. The valve seat member 170 has a cylindrical portion 164 mounted on the valve seat mounting portion 181 of the spool housing 10. The cylindrical portion 164 is press-fitted into the valve seat mounting portion 181. That is, the valve seat member 170 is pressed into the spool housing 10 and fixed. The press fitting of the valve seat member 170 and the spool housing 10 is performed by inserting a cylindrical portion 164 having an outer diameter larger than the inner diameter of the valve seat mounting portion 181 into the valve seat mounting portion 181. The inner diameter of the valve seat mounting portion 181 and the outer diameter of the cylindrical portion 164 are determined by the valve seat member 170 even when the pressure difference between the third oil pressure and the fourth oil pressure described in the first embodiment is applied to the valve seat member 170. Is a size that does not fall off from the spool housing 10.

  In the body BD, a plug 115 is inserted in the hollow portion 110 on the + X side of the spool switching valve device 1A. The outer peripheral surface of plug 115 is fitted with the inner peripheral surface of cavity 110. A sealing material (not shown) is provided between the outer peripheral surface of the plug 115 and the inner peripheral surface of the cavity 110 as appropriate. The sealing material is, for example, an O-ring.

  In the above-described spool switching valve device 1A, the same operation and effect as those of the spool switching valve device 1 of the first embodiment can be obtained, and in addition, the valve seat members 160 and 170 are simply press-fitted into the spool housing 10. Can be assembled by work.

  As described above, the preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but it is needless to say that the present invention is not limited to the examples. The shapes, combinations, and the like of the constituent members shown in the above-described examples are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the first embodiment, the form in which the valve seat member 60 and the valve seat member 70 are different is illustrated. However, the present invention is not limited thereto. 70 may have the same form as the valve seat member 60.

In the first and second embodiments, the example in which the valve seat members 60, 70, 160, and 170 are mounted inside the spool housing 10 in the radial direction has been described. It may be mounted on the outside of the housing 10 in the radial direction.
FIG. 11 shows a modification in which the valve seat member 60B is fixed to the spool housing 10 by caulking. The spool housing 10 has a valve seat mounting portion 81B on an outer peripheral surface of a wall portion 12 provided at an end portion on the −X side. The valve seat member 60B has a cylindrical portion 63B mounted radially outside the valve seat mounting portion 81B. The cylindrical portion 63B has an engaging portion 61B on the distal end side of the slit S11 penetrating in the radial direction. An engagement receiving portion 62B is provided on the wall portion 12 at a position overlapping the engagement portion 61B in the radial direction. The engagement receiving portion 62B penetrates in the radial direction.
After the above-mentioned valve seat member 60B is mounted on the valve seat mounting portion 81B, the engaging portions 61B are plastically deformed and engaged with each other by caulking the engaging portions 61B in directions approaching each other radially using a tool. It enters the receiving portion 62B. The engagement portion 61B that has entered the engagement receiving portion 62B is located on the + X side of the −X side end of the spool housing 10. Therefore, the movement of the valve seat member 60 </ b> B in the direction of dropping from the spool housing 10 is prevented. That is, the valve seat member 60B is prevented from dropping from the spool housing 10.

  FIG. 12 shows a modification in which the valve seat member 60C is fixed to the spool housing 10 by press fitting. The spool housing 10 has a valve seat mounting portion 81C on the outer peripheral surface of the wall portion 12 provided at the end on the −X side. The valve seat member 60C has a cylindrical portion 63C mounted radially outside the valve seat mounting portion 81C. The cylindrical portion 63C is press-fitted into the valve seat mounting portion 81C. That is, the valve seat member 60C is pressed into the spool housing 10 and fixed. The press fitting of the valve seat member 60C and the spool housing 10 is performed by inserting a cylindrical portion 63C having an inner diameter smaller than the outer diameter of the valve seat mounting portion 81C into the valve seat mounting portion 81C. The outer diameter of the valve seat mounting portion 81C and the inner diameter of the cylindrical portion 63C are such that the valve seat member 60C can be used even if a pressure difference between the first oil pressure and the second oil pressure described in the first embodiment is applied to the valve seat member 60C. Is a size that does not fall off from the spool housing 10. The valve seat member 60C shown in FIG. 12 is prevented from dropping from the spool housing 10 even when mounted on the radial outside of the valve seat mounting portion 81C.

  DESCRIPTION OF SYMBOLS 1 ... Spool switching valve device, 10 ... Spool housing, 20, 30 ... Hollow hole, 21, 31 ... First input port hollow part, 22, 32 ... Valve body movable part, 23, 33 ... First valve seat part, 42 , 142 ... second input port part, 43, 143 ... output port, 53, 54 ... second valve seat part, 60, 60B, 60C, 70, 160, 170 ... valve seat member, 61, 61B, 71 ... engagement , 62, 62B, 72 ... engagement receiving part, 63, 63B, 63C, 64 ... cylindrical part, 65a ... outer peripheral surface, 81, 181 ... valve seat mounting part, 91, 191 ... first groove part, 93, 193 ... 2nd groove part, 161, 171 ... hole part, AX ... shaft, B1, B2 ... valve body

Claims (4)

A column-shaped spool housing having two hollow holes opened toward the center from both ends in the axial direction toward the center,
A spool switching valve device comprising: a spherical valve body disposed in the hollow hole;
The spool housing,
A first input port hollow portion provided at the innermost portion of each of the hollow holes and penetrating the side surface of the spool housing and connected to the outside;
A valve body movable portion provided adjacent to the first input port cavity portion of each of the cavity holes, and accommodates the valve body movably in the axial direction;
A first valve which is provided at a boundary between each of the valve body movable parts and each of the first input port cavities, and which opens and closes between each of the valve body movable parts and each of the first input port cavities by the valve body. With a seat,
A valve seat mounting portion provided adjacent to each of the valve body movable portions and at the most front end of each of the cavity holes, and a valve seat member having a second valve seat portion is mounted in a radially overlapping manner; Equipped with each
Each of the valve seat members has a cylindrical portion provided with a hole at the center as viewed in the axial direction on the valve body movable portion side of each of the valve seat members, and the valve body movable portion of the hole portion A second input port portion serving as a passage to the outside is provided on the opposite side, and the valve element is fitted on the valve element movable portion side of the hole, and the valve element movable portion and the The second valve seat portion that opens and closes between each second input port portion is disposed,
Each of the valve body movable parts includes an output port that penetrates the side surface of the spool housing and communicates with the outside at a central portion of a movement range of the valve body,
Each of the valve seat members is fixed to the spool housing by swaging,
Each of the valve seat members has an engagement receiving portion for preventing each of the valve seat members from falling off from the valve seat mounting portion,
The spool housing, the opposite ends of the axial, and plastic deformation have a engaging portion entering the respective engaging receiving portion by oppositely disposed crimping in the radial direction,
The valve seat member located on one side in the axial direction of the spool housing extends in a cross shape as viewed in the axial direction at an outer end portion in the axial direction, and opens to the outer peripheral surface of the valve seat member. It has a groove,
The engagement portions that are opposed in the radial direction on one side in the axial direction of the spool housing respectively enter the groove portions from the radial outside of the valve seat member.
Spool switching valve device. A column-shaped spool housing having two hollow holes opened toward the center from both ends in the axial direction toward the center,
A spool switching valve device comprising: a spherical valve body disposed in the hollow hole;
The spool housing,
A first input port hollow portion provided at the innermost portion of each of the hollow holes and penetrating the side surface of the spool housing and connected to the outside;
A valve body movable portion provided adjacent to the first input port cavity portion of each of the cavity holes, and accommodates the valve body movably in the axial direction;
A first valve which is provided at a boundary between each of the valve body movable parts and each of the first input port cavities, and which opens and closes between each of the valve body movable parts and each of the first input port cavities by the valve body. With a seat,
A valve seat mounting portion provided adjacent to each of the valve body movable portions and at the most front end of each of the cavity holes, and a valve seat member having a second valve seat portion is mounted in a radially overlapping manner; Equipped with each
Each of the valve seat members has a cylindrical portion provided with a hole at the center as viewed in the axial direction on the valve body movable portion side of each of the valve seat members, and the valve body movable portion of the hole portion A second input port portion serving as a passage to the outside is provided on the opposite side, and the valve element is fitted to each valve element movable portion side of the hole, and each of the valve element movable portions and the The second valve seat portion that opens and closes between each second input port portion is disposed,
Each of the valve body movable parts includes an output port that penetrates the side surface of the spool housing and communicates with the outside at a central portion of a movement range of the valve body,
Each of the valve seat members is fixed to the spool housing by swaging,
The spool housing has an engagement receiving portion at one end in the axial direction for preventing the valve seat member attached to the valve seat attachment portion from falling off,
The valve seat member attached to one end in the axial direction of the spool housing has an engaging portion that is plastically deformed by caulking and enters the engagement receiving portion at a tip of the spool housing. Have,
Spool switching valve device. At least one of the valve seat member, the spool switching valve device according to claim 1 or 2 having an outer peripheral surface of the same diameter as the outer peripheral surface of the spool housing. Wherein the outer peripheral surface of the spool housing has a first groove said continuous first input port cavity, and a second groove portion that is connected to the output port, but any of the claims 1-3 respectively provided in the circumferential direction The spool switching valve device according to claim 1.

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