JP6825405B2 - Valve device - Google Patents

Description

The present invention relates to a valve device.

A hydraulic control device having a structure for detecting an axial displacement of a spool with respect to a valve body is known. For example, in the hydraulic control device of Patent Document 1, the axial displacement of the spool is detected by using a magnet and a Hall element.

Japanese Unexamined Patent Publication No. 2008-144834

In the above-mentioned hydraulic control device of Patent Document 1, the Hall element is attached to a fixing portion which is a separate member from the valve body, and is fixed to the valve body via the fixing portion. Further, the magnet is attached to a movable portion of a member separate from the spool, and is fixed to the spool via the movable portion. Therefore, there is a problem that an error is likely to be accumulated in the mounting position of the Hall element and the magnet because the fixed portion and the movable portion are interposed, and the detection accuracy of the axial displacement of the spool is lowered.

In view of the above problems, one object of the present invention is to provide a valve device having a structure capable of accurately detecting axial displacement of a spool valve.

One aspect of the valve device of the present invention is an oil passage body having an oil passage through which oil flows, and is attached to the oil passage body and arranged along a central axis extending in an axial direction intersecting the vertical direction. The oil passage body includes a spool valve, a magnet directly fixed to the spool valve, and a sensor module having a magnetic sensor for detecting the magnetic field of the magnet, and the oil passage body is a lower body and an upper side of the lower body. The upper body has a spool hole extending in the axial direction, and the spool hole has an opening that opens on one side in the axial direction, and the spool valve has. Is movably arranged in the spool hole in the axial direction, one end of the spool valve in the axial direction protrudes to the outside of the spool hole through the opening, and the oil passage body is the upper portion. The sensor module has a storage space between the body and the lower body for accommodating the sensor module, and the sensor module has a housing for supporting the magnetic sensor and comes into contact with the lower body and the upper body. In this state, it is sandwiched in the vertical direction and fixed to the oil passage body.

According to one aspect of the present invention, there is provided a valve device having a structure capable of accurately detecting the axial displacement of the spool valve.

FIG. 1 is a perspective view showing a valve device of the first embodiment. FIG. 2 is an exploded perspective view showing the valve device of the first embodiment. FIG. 3 is a diagram showing a valve device of the first embodiment, and is a sectional view taken along line III-III in FIG. FIG. 4 is a perspective view showing a valve device which is another example of the first embodiment. FIG. 5 is a cross-sectional view showing a spool valve and a magnet which are another example of the first embodiment. FIG. 6 is an exploded perspective view showing a spool valve and a magnet, which are another example of the first embodiment. FIG. 7 is a perspective view showing the valve device of the second embodiment. FIG. 8 is a diagram showing a valve device of the second embodiment, which is a cross-sectional view taken along the line VIII-VIII of FIG. FIG. 9 is a perspective view showing a valve device which is another example of the second embodiment.

In each figure, the Z-axis direction is the vertical direction Z. The X-axis direction is the horizontal direction X in the horizontal direction orthogonal to the vertical direction Z. The Y-axis direction is the axial direction Y orthogonal to the horizontal direction X among the horizontal directions orthogonal to the vertical direction Z. The positive side of the vertical direction Z is called the "upper side", and the negative side is called the "lower side". The positive side of the axial direction Y is called the "front side", and the negative side is called the "rear side". The front side corresponds to one side in the axial direction, and the rear side corresponds to the other side in the axial direction. The upper side, lower side, front side, rear side, vertical direction, and left-right direction are simply names for explaining the relative positional relationship of each part, and the actual arrangement relationship and the like are the arrangements indicated by these names. It may be an arrangement relationship other than the relationship.

<First Embodiment>
The valve device 10 of the present embodiment shown in FIG. 1 is, for example, a control valve mounted on a vehicle and switched based on a shift operation of a driver. The valve device 10 includes an oil passage body 20, a spool valve 30, a magnet 50, and a sensor module 40.

The oil passage body 20 has an oil passage through which oil flows. In each figure, for example, a state in which a part of the oil passage body 20 is cut out is shown. The oil passage body 20 has a lower body 21 and an upper body 22. Oil channels are provided, for example, in both the lower body 21 and the upper body 22. As shown in FIG. 2, the lower body 21 has an upper surface 21a orthogonal to the vertical direction Z. The upper body 22 is arranged so as to be overlapped on the upper side of the lower body 21. As shown in FIG. 3, the upper body 22 has a lower surface 22f orthogonal to the vertical direction Z. The lower surface 22f comes into contact with the upper surface 21a.

The upper body 22 has a first portion 22a and a second portion 22b. As shown in FIG. 1, the first portion 22a has an upper surface 22c orthogonal to the vertical direction Z. The second portion 22b is connected to the front side of the first portion 22a. The second portion 22b has an upper surface 22d orthogonal to the vertical direction Z. The upper end of the second portion 22b, that is, the upper surface 22d, is arranged below the upper end of the first portion 22a, that is, the upper surface 22c. As a result, a step is provided at the connecting portion between the first portion 22a and the second portion 22b. Further, the upper body 22 has a front surface 22e as a step surface orthogonal to the axial direction Y in the step. As shown in FIG. 3, the lower surface of the first portion 22a and the lower surface of the second portion 22b are arranged on the same surface orthogonal to the vertical direction Z and connected to each other to form the lower surface 22f of the upper body 22.

The upper body 22 has a spool hole 23 extending in the axial direction Y. As shown in FIG. 1, the cross-sectional shape of the spool hole 23 in the present embodiment is a circular shape centered on a central axis J extending in the axial direction Y. The radial direction centered on the central axis J is simply referred to as the "diameter direction", and the circumferential direction centered on the central axis J is simply referred to as the "circumferential direction".

In the present embodiment, the spool hole 23 is provided in the first portion 22a. The spool hole 23 has an opening 23a that opens to the front side. The opening 23a opens to the front surface 22e, which is the front surface of the first portion 22a. At least a part of the spool hole 23 constitutes a part of the oil passage in the oil passage body 20. For the convenience of cutting out a part of the oil passage body 20, the spool hole 23 is also shown to be open on the rear side in FIG. 3, but the rear end of the spool hole 23 is closed. That is, the spool hole 23 is a bottomed hole that opens to the front side. The spool holes 23 may be opened on both sides in the axial direction Y, for example.

The lower body 21 and the upper body 22 are, for example, single members. The lower body 21 and the upper body 22 are made of a non-magnetic material. The material of the lower body 21 and the material of the upper body 22 are, for example, aluminum.

The oil passage body 20 has a storage space 24 in which the sensor module 40 is housed between the upper body 22 and the lower body 21. In the present embodiment, the accommodation space 24 is a space inside a recess 25 provided on the lower surface 22f of the upper body 22. The recess 25 is recessed upward from the lower surface 22f. The outer shape seen from the lower side of the recess 25 is square. The recess 25 is provided on the lower surface of the second portion 22b of the lower surface 22f. As a result, the accommodation space 24 is arranged between the second portion 22b and the lower body 21 in the vertical direction Z.

In the present specification, "the accommodation space is provided between the upper body and the lower body" means that a part of the upper body is arranged on the upper side of the accommodation space and a part of the lower body is provided on the lower side of the accommodation space. Should be placed.

As shown in FIG. 2, the oil passage body 20 has a through hole 26 that connects the inside of the accommodation space 24 and the outside of the oil passage body 20. The through hole 26 penetrates from the bottom surface 25a to the top surface 22d of the recess 25 in the second portion 22b in the vertical direction Z. The bottom surface 25a of the recess 25 is a surface facing downward as shown in FIG. As shown in FIG. 2, the outer shape of the through hole 26 viewed from above is a rectangular shape long in the axial direction Y. The through hole 26 is arranged at a position shifted to one side of the spool hole 23 in the left-right direction X, that is, to the −X side in FIG.

The spool valve 30 is arranged along a central axis J extending in the axial direction Y intersecting the vertical direction Z. The spool valve 30 has a columnar shape. The spool valve 30 is attached to the oil passage body 20. As shown in FIG. 3, the spool valve 30 is arranged so as to be movable in the axial direction Y in the spool hole 23. The front end of the spool valve 30 projects to the outside of the spool hole 23 through the opening 23a. The front end of the spool valve 30 is located above the second portion 22b. The portion of the spool valve 30 that protrudes to the outside of the spool hole 23 faces the upper surface 22d in the vertical direction Z with a gap.

The spool valve 30 has a first small diameter portion 31a, a first large diameter portion 32a, a second small diameter portion 31b, a second large diameter portion 32b, a connecting portion 33, and a magnet mounting portion 34. Each part of the spool valve 30 is a columnar shape extending in the axial direction Y about the central axis J. From the rear side to the front side, each part of the spool valve 30 has a first large diameter part 32a, a first small diameter part 31a, a second large diameter part 32b, a second small diameter part 31b, a connecting part 33, and a magnet mounting part 34. They are arranged consecutively in order. The first large diameter portion 32a is the rear end portion of the spool valve 30. The magnet mounting portion 34 is a front end portion of the spool valve 30.

The first small diameter portion 31a, the first large diameter portion 32a, the second large diameter portion 32b, and a part of the rear side of the second small diameter portion 31b are arranged in the spool hole 23. The front portion of the second small diameter portion 31b, the connecting portion 33, and the magnet mounting portion 34 are arranged outside the spool hole 23. The second small diameter portion 31b may be in a state where the entire second small diameter portion 31b is arranged outside the spool hole 23 by the movement of the spool valve 30 in the axial direction Y.

The outer diameter of the first large diameter portion 32a and the outer diameter of the second large diameter portion 32b are larger than the outer diameter of the first small diameter portion 31a and the outer diameter of the second small diameter portion 31b. The outer diameter of the first small diameter portion 31a and the outer diameter of the second small diameter portion 31b are, for example, the same. The outer diameter of the first large diameter portion 32a and the outer diameter of the second large diameter portion 32b are, for example, the same. The first large diameter portion 32a and the second large diameter portion 32b are fitted into the spool hole 23. As the spool valve 30 moves in the axial direction Y, the first large diameter portion 32a and the second large diameter portion 32b slide with respect to the inner peripheral surface of the spool hole 23.

The outer diameter of the connecting portion 33 is larger than the outer diameter of the first small diameter portion 31a and the outer diameter of the second small diameter portion 31b. For example, the outer diameter of the first large diameter portion 32a and the outer diameter of the second large diameter portion 32b. Is the same as. As shown in FIG. 1, the connecting portion 33 has a connecting recess 33a that penetrates the recessed connecting portion 33 in the left-right direction X from the upper side to the lower side. A manual shaft that is driven based on the shift operation of the driver is connected to the connecting recess 33a.

As shown in FIG. 3, the outer diameter of the magnet mounting portion 34 is smaller than the outer diameter of the first small diameter portion 31a and the outer diameter of the second small diameter portion 31b. A male screw portion is provided on the outer peripheral surface of the front end portion of the magnet mounting portion 34. The magnet 50 is mounted on the magnet mounting portion 34. In this embodiment, the spool valve 30 is a single member.

The spool valve 30 moves in the axial direction Y as the manual shaft connected to the connecting portion 33 via the connecting recess 33a is driven. As a result, the first small diameter portion 31a, the first large diameter portion 32a, and the second large diameter portion 32b arranged in the spool hole 23 move in the axial direction Y, and the oil passages in the oil passage body 20 are connected to each other. To switch. The spool valve 30 is, for example, a manual valve. The spool valve 30 moves in the axial direction Y to switch the connection between the oil passages in the oil passage body 20, thereby switching the gear of the vehicle.

The magnet 50 has a cylindrical shape extending in the axial direction Y about the central axis J. The magnet 50 opens on both sides in the axial direction Y. A magnet mounting portion 34 is passed through the inside of the magnet 50, and the magnet 50 is fitted to the spool valve 30 at the magnet mounting portion 34. The rear end of the magnet 50 comes into contact with the front end of the connecting portion 33. The front end of the magnet 50 is located on the rear side of the male screw portion provided at the front end portion of the magnet mounting portion 34. The magnet 50 is sandwiched in the axial direction Y by the nut 51 and the magnet mounting portion 34 by tightening the nut 51 into the male screw portion provided at the front end portion of the magnet mounting portion 34. As a result, the magnet 50 is directly fixed to the portion of the spool valve 30 that protrudes to the outside of the spool hole 23, that is, the magnet mounting portion 34 in the present embodiment.

In addition, in the present specification, "a certain object is directly fixed to a certain fixed object" means that at least a part of the certain object comes into contact with a certain fixed object and is fixed. Includes that an object is fixed to an object to be fixed by a substance such as an adhesive.

As shown in FIG. 2, the sensor module 40 includes a housing 41, a circuit board 43, a magnetic sensor 44 that detects the magnetic field of the magnet 50, a seal member 42, and a connector portion 45. The housing 41 has a bottomed box-shaped housing body 41a that opens upward, and a plurality of support protrusions 41b that project upward from the bottom surface of the housing body 41a. The outer shape of the housing body 41a as viewed from above is substantially square.

As shown in FIG. 3, the dimensions of the housing body 41a in the vertical direction Z are substantially the same as the dimensions of the recess 25 in the vertical direction Z. The housing body 41a is housed in the storage space 24, that is, in the recess 25 in this embodiment. The upper end of the housing body 41a comes into contact with the bottom surface 25a of the recess 25. The lower surface of the housing body 41a comes into contact with the upper surface 21a of the lower body 21. As a result, the sensor module 40 is sandwiched in the vertical direction Z in contact with the lower body 21 and the upper body 22, and is fixed to the oil passage body 20.

As described above, according to the present embodiment, since the accommodation space 24 for accommodating the sensor module 40 is provided in the oil passage body 20, as compared with the case where the sensor module 40 is fixed to the oil passage body 20 via another member, The sensor module 40 can be fixed to the oil passage body 20 with high position accuracy. Further, since the magnet 50 is directly fixed to the spool valve 30, the magnet 50 can be fixed to the spool valve 30 with higher positional accuracy than when the magnet 50 is fixed to the spool valve 30 via another member. Therefore, the error in the relative position between the magnet 50 and the magnetic sensor 44 of the sensor module 40 can be reduced, and the displacement of the spool valve 30 in the axial direction Y can be detected accurately by the sensor module 40.

Further, since it is not necessary to provide a separate member for fixing the sensor module 40 and the magnet 50 to the oil passage body 20, the number of parts of the valve device 10 can be reduced, and the labor and manufacturing cost of assembling the valve device 10 can be reduced. .. Further, the valve device 10 can be easily made small and lightweight. Further, according to the present embodiment, since the sensor module 40 is sandwiched between the upper body 22 and the lower body 21, the sensor module 40 can be firmly fixed to the oil passage body 20. Further, since the periphery of the sensor module 40 can be protected by the oil passage body 20, it is possible to prevent the sensor module 40 from being damaged or deformed.

Further, according to the present embodiment, since the accommodation space 24 is the space inside the recess 25, the sensor module 40 can be fitted and accommodated in the recess 25. As a result, the sensor module 40 can be stably arranged in the accommodation space 24.

Further, according to the present embodiment, since the recess 25 is provided on the lower surface 22f of the upper body 22, the sensor module 40 can be arranged on the upper side as compared with the case where the recess 25 is provided on the lower body 21, for example. As a result, the distance between the sensor module 40 and the spool valve 30 in the vertical direction Z can be easily reduced, and the magnetic field of the magnet 50 can be easily detected by the magnetic sensor 44. Therefore, the sensor module 40 can more accurately detect the displacement of the spool valve 30 in the axial direction Y.

Further, according to the present embodiment, since the magnet 50 is fixed to the portion of the spool valve 30 that protrudes to the outside of the spool hole 23, the magnet 50 comes into contact with the oil flowing through the oil passage in the oil passage body 20. Can be suppressed. As a result, it is possible to prevent the metal pieces contained in the oil from adhering to the magnet 50.

As shown in FIG. 2, the support protrusions 41b are provided at the four corners of the bottom surface of the housing 41, respectively. The support protrusion 41b is a columnar shape extending in the vertical direction Z. The upper end of the support protrusion 41b is located below the upper end of the housing body 41a.

The circuit board 43 has a substantially square plate shape extending in a direction orthogonal to the vertical direction Z. The circuit board 43 is supported by a plurality of support protrusions 41b from below and arranged in the housing 41. The circuit board 43 is provided with a hole that penetrates the circuit board 43 in the vertical direction Z and allows the upper end portion of the support protrusion 41b to pass through. The upper end of the support protrusion 41b protruding above the hole of the circuit board 43 is heat-welded to the upper surface of the circuit board 43. As a result, the circuit board 43 is fixed to the housing 41.

As shown in FIG. 3, the magnetic sensor 44 is mounted on the upper surface of the circuit board 43. As a result, the housing 41 supports the magnetic sensor 44 via the circuit board 43. When the position of the magnet 50 in the axial direction Y changes with the movement of the spool valve 30 in the axial direction Y, the magnetic field of the magnet 50 passing through the magnetic sensor 44 changes. Therefore, by detecting the change in the magnetic field of the magnet 50 by the magnetic sensor 44, the position of the magnet 50 in the axial direction Y, that is, the position of the spool valve 30 in the axial direction Y can be detected. The magnetic sensor 44 is, for example, a Hall element. The magnetic sensor 44 may be a magnetoresistive element.

The magnetic sensor 44 and the magnet 50 overlap each other in the vertical direction Z. That is, at least a part of the magnet 50 overlaps the magnetic sensor 44 in a direction parallel to the vertical direction Z in the radial direction. Therefore, the magnetic field of the magnet 50 can be easily detected by the magnetic sensor 44. Therefore, the sensor module 40 can more accurately detect the displacement of the spool valve 30 in the axial direction Y.

In the present specification, "at least a part of the magnet overlaps with the magnetic sensor in the radial direction" means at least a part of the position within the range in which the spool valve to which the magnet is directly fixed moves in the axial direction. At least a part of the magnet may overlap the magnetic sensor in the radial direction. That is, for example, when the spool valve 30 is displaced in the axial direction Y from the position shown in FIG. 3, the magnet 50 may not overlap the magnetic sensor 44 in the vertical direction Z. In the present embodiment, a part of the magnet 50 overlaps the magnetic sensor 44 in the vertical direction Z at any position as long as the spool valve 30 moves in the axial direction Y.

The upper surface of the magnetic sensor 44 is arranged below the bottom surface 25a of the recess 25 so as to face the bottom surface 25a via a gap. A part of the second portion 22b provided with the recess 25 is arranged between the magnetic sensor 44 and the magnet 50 in the vertical direction Z. Here, since the upper body 22 is made of a non-magnetic material as described above, it is possible to prevent the detection of the magnetic field of the magnet 50 by the magnetic sensor 44 from being hindered by the second portion 22b.

The seal member 42 is a rectangular annular O-ring. The seal member 42 is arranged at the lower end of the housing 41. More specifically, as shown in FIG. 2, the seal member 42 is fitted and mounted on the outer periphery of the lower end portion of the housing 41. As shown in FIG. 3, the seal member 42 is crimped to the upper surface 21a of the lower body 21. Therefore, the seal member 42 is elastically deformed and an upward force is applied to the housing 41. As a result, the housing 41 can be pressed against the bottom surface 25a of the recess 25, and the sensor module 40 can be arranged in the accommodation space 24 more stably.

Further, for example, even if the dimension of the housing 41 in the vertical direction Z becomes smaller or the dimension of the recess 25 in the axial direction Y becomes larger due to an error, the error is absorbed by the elastic deformation of the seal member 42. Can be done. Therefore, the housing 41 can be stably fixed in the accommodation space 24. Further, even if an error occurs, the housing 41 can be pressed against the bottom surface 25a of the recess 25, so that the sensor module 40 can be positioned in the vertical direction Z. As a result, it is possible to suppress a change in the distance between the magnetic sensor 44 and the magnet 50 in the vertical direction Z, and it is possible to suppress a decrease in the detection accuracy of the sensor module 40.

Further, since the sealing member 42 can seal between the housing 41 and the lower body 21, it is easy to prevent oil from flowing into the accommodation space 24. Therefore, contact of oil with the magnetic sensor 44 and the circuit board 43 can be suppressed, and damage to the sensor module 40 can be suppressed.

The outer peripheral portion of the seal member 42 is crimped to the side surface of the recess 25. As a result, the sealing member 42 seals between the side surface of the recess 25 and the side surface of the housing 41. Therefore, for example, it is possible to prevent oil from flowing into the accommodation space 24 from the gap between the lower body 21 and the upper body 22, and it is possible to further prevent the sensor module 40 from being damaged.

As shown in FIG. 1, the connector portion 45 is arranged on the upper surface 22d of the second portion 22b. The connector portion 45 has a connection terminal 45a and a terminal holding portion 45b for holding the connection terminal 45a. That is, the sensor module 40 has a connection terminal 45a. The connection terminal 45a is electrically connected to the magnetic sensor 44. More specifically, the connection terminal 45a is connected to the upper surface of the circuit board 43 and is electrically connected to the magnetic sensor 44 via the circuit board 43.

As shown in FIG. 2, the connection terminal 45a has a first stretched portion extending upward from the upper surface of the circuit board 43 and a second stretched portion extending in the left-right direction X from the upper end of the first stretched portion. The first stretched portion passes through the through hole 26 and projects upward from the second portion 22b. The upper end portion of the first stretched portion and the portion of the second stretched portion on the side of the first stretched portion are embedded and held in the terminal holding portion 45b. The portion of the second stretched portion opposite to the first stretched portion is exposed to the outside of the oil passage body 20. In this way, a part of the connection terminal 45a is exposed to the outside of the oil passage body 20 through the through hole 26. A part of the exposed connection terminal 45a, that is, the second extension portion is connected to an external power source (not shown). As a result, the magnetic sensor 44 can be easily supplied with power from an external power source.

A plurality of connection terminals 45a are provided. In this embodiment, for example, four connection terminals 45a are provided. The plurality of connection terminals 45a are provided side by side along the axial direction Y. The terminal holding portion 45b has a convex portion that protrudes downward. The terminal holding portion 45b is attached to the oil passage body 20 by fitting the convex portion into the through hole 26 from above.

The present invention is not limited to the above-described embodiment, and other configurations may be adopted. In the following description, the same configurations as those in the above embodiment may be omitted by appropriately assigning the same reference numerals and the like.

The valve device may have a configuration similar to that of the valve device 110 shown in FIG. As shown in FIG. 4, in the valve device 110, the oil passage body 120 has a groove 122c. In FIG. 4, the groove portion 122c is provided on the upper surface of the second portion 122b in the lower body 122. The groove portion 122c is recessed downward from the upper surface of the second portion 122b and extends in the axial direction Y. The cross-sectional shape of the groove portion 122c orthogonal to the axial direction Y is an angular U-shape that opens upward. A part of the groove portion 122c is located on the upper side of the sensor module 40. The bottom surface of the groove portion 122c is located above the bottom surface of the recess 25.

The magnet 150 has a protrusion 150a extending in the radial direction. In FIG. 4, the protrusion 150a extends downward. The protrusion 150a has a square columnar shape. The tip end portion, that is, the lower end portion of the protrusion 150a is inserted into the groove portion 122c. By inserting the protrusion 150a into the groove 122c in this way, it is possible to prevent the magnet 150 from rotating relative to the spool valve 30 in the circumferential direction. This makes it easier for the magnetic sensor 44 to detect the magnetic field of the magnet 150 more accurately.

Further, the spool valve and the magnet may have a configuration like the spool valve 230 and the magnet 250 shown in FIG. As shown in FIG. 5, a flat flat portion 234a is provided on the outer peripheral surface of the magnet mounting portion 234 of the spool valve 230. The cross-sectional shape of the magnet mounting portion 234 is a D-cut shape in which a part of a circle is cut out with a straight line. A flat flat portion 250b is provided on the inner peripheral surface of the magnet 250.

The flat portion 234a and the flat portion 250b face each other in the radial direction. In this way, the outer peripheral surface of the spool valve 230 and the inner peripheral surface of the magnet 250 have flat flat portions 234a and 250b that face each other in the radial direction, so that the magnet 250 is circumferentially oriented with respect to the spool valve 230. Relative rotation can be suppressed. Therefore, the magnetic sensor 44 can easily detect the magnetic field of the magnet 250 with higher accuracy.

Further, the spool valve and the magnet may have a configuration like the spool valve 330 and the magnet 350 shown in FIG. As shown in FIG. 6, the connecting portion 333 of the spool valve 330 has a magnet mounting recess 333b that penetrates the recessed connecting portion 333 from the lower side to the upper side in the left-right direction X. The magnet mounting recess 333b overlaps the connecting recess 33a in the vertical direction Z. Unlike the spool valve 30 described above, the spool valve 330 does not have a magnet mounting portion 34.

The magnet 350 is a columnar shape extending in the axial direction Y. The shape of the magnet 350 viewed along the axial direction Y is a semicircular shape that is convex downward. The magnet 350 is fitted into the magnet mounting recess 333b. The magnet 350 is fixed to the spool valve 330, for example, with an adhesive or the like. According to this configuration, the magnet 350 does not rotate relative to the spool valve 330 in the circumferential direction, and the magnetic sensor 44 can easily detect the magnetic field of the magnet 350 more accurately. Further, the dimension of the spool valve 330 in the axial direction Y can be reduced.

<Second Embodiment>
As shown in FIGS. 7 and 8, in the valve device 410 of the present embodiment, the spool valve 430 is different from the spool valve 30 of the first embodiment in that it does not have the magnet mounting portion 34. As shown in FIG. 8, the magnet 450 is fixed to the outer peripheral surface of the first small diameter portion 31a. The magnet 450 has a plate shape that extends in the axial direction Y and is curved along the outer peripheral surface of the first small diameter portion 31a. The shape of the magnet 450 viewed along the axial direction Y is a semicircular arc shape that is convex downward. The magnet 450 is fixed to the lower portion of the outer peripheral surface of the first small diameter portion 31a with, for example, an adhesive or the like. The front end of the magnet 450 comes into contact with the rear end of the second large diameter portion 32b. As described above, in the present embodiment, the magnet 450 is fixed to the portion of the spool valve 430 that is arranged inside the spool hole 23.

In the present embodiment, the accommodation space 424 is a space inside a recess 425 provided on the lower surface of the first portion 422a of the lower surface 422f of the upper body 422. As a result, the accommodation space 424 is arranged between the first portion 422a and the lower body 21 in the vertical direction Z. The accommodation space 424 is arranged on the radial outer side of the spool hole 23. In this embodiment, the accommodation space 424 is arranged below the spool hole 23.

According to such a configuration, the sensor module 440 accommodated in the accommodation space 424 can be arranged between the first portion 422a provided with the spool hole 23 and the lower body 21 in the vertical direction Z. Therefore, the second portion 422b can be easily miniaturized in the axial direction Y. Further, the spool valve 430 is also easy to be miniaturized in the axial direction Y. Therefore, according to the present embodiment, the valve device 410 can be miniaturized in the axial direction Y.

Unlike the first embodiment, the second portion 422b is not provided with the recess 25. As shown in FIG. 7, the connector portion 445 is provided on the upper surface of the first portion 422a.

As in the valve device 510 shown in FIG. 9, the accommodation space 524 accommodating the sensor module 540 may be arranged on one side of the spool hole 23 in the left-right direction X of the radial outside of the spool hole 23. .. In this case, the sensor module 540 is accommodated in the accommodation space 524 in a posture rotated by 90 ° in the circumferential direction with respect to the posture shown in FIG. According to this configuration, since the upper end of the sensor module 540 can be brought close to the upper surface of the first portion 422a, the connection terminal of the connector portion 445 can be easily connected to the sensor module 540, and the connection terminal can be shortened.

In each of the above embodiments, the upper body and the lower body are each a single member, but the present invention is not limited to this. For example, the upper body may be composed of two members, an upper plate and a separate plate arranged between the upper plate and the lower body. Alternatively, the lower body may be composed of two members, a lower plate and a separate plate arranged between the lower plate and the upper body. Further, the spool valve may be composed of a plurality of members. Further, the magnet may be configured by combining a plurality of magnets. Further, if the magnetic field of the magnet can be detected by the magnetic sensor, the magnetic sensor and the magnet do not have to overlap in the radial direction.

Further, in each of the above embodiments, the recesses constituting the accommodation space are provided only on the lower surface of the upper body, but the present invention is not limited to this. The recess may be provided on at least one of the lower surface of the upper body and the upper surface of the lower body. That is, the recess may be provided only on the upper surface of the lower body, or may be provided on both the lower surface of the upper body and the upper surface of the lower body. If the recesses are provided on both the lower surface of the upper body and the upper surface of the lower body, the accommodation space is provided straddling the upper body and the lower body.

Moreover, the accommodation space may be formed by other than the recess. For example, the accommodation space may be composed of steps provided on at least one of the lower surface of the upper body and the upper surface of the lower body. In this case, for example, the accommodation space may be opened in the axial direction Y or the left-right direction X.

Further, the use of the valve device of each of the above embodiments is not particularly limited, and the valve device may be mounted on a vehicle other than the vehicle. In addition, the above configurations can be appropriately combined within a range that does not contradict each other.

10,110,410,510 ... Valve device, 20,120 ... Oil passage body, 21,122 ... Lower body, 22,422 ... Upper body, 22a, 422a ... First part, 22b, 122b, 422b ... Second part , 23 ... Spool hole, 23a ... Opening, 24,424,524 ... Containment space, 25,425 ... Recess, 26 ... Through hole, 30,230,330,430 ... Spool valve, 40,440,540 ... Sensor module , 41 ... Housing, 42 ... Seal member, 44 ... Magnetic sensor, 45a ... Connection terminal, 50, 150, 250, 350, 450 ... Magnet, 122c ... Groove, 150a ... Projection, 234a, 250b ... Flat part, J ... central axis, Y ... axial direction, Z ... vertical direction

Claims (10)

An oil passage body that has an oil passage inside for oil to flow,
A spool valve attached to the oil passage body and arranged along a central axis extending in an axial direction intersecting the vertical direction.
A magnet that is directly fixed to the spool valve,
A sensor module having a magnetic sensor that detects the magnetic field of the magnet,
With
The oil passage body
With the lower body
An upper body that is placed on top of the lower body and
Have,
The upper body has a spool hole extending in the axial direction.
The spool hole has an opening that opens on one side in the axial direction.
The spool valve is arranged so as to be movable in the axial direction in the spool hole.
One end of the spool valve in the axial direction protrudes to the outside of the spool hole through the opening.
The oil passage body has a storage space in which the sensor module is housed between the upper body and the lower body.
The sensor module has a housing that supports the magnetic sensor.
A valve device that is sandwiched in the vertical direction in contact with the lower body and the upper body and fixed to the oil passage body. The valve device according to claim 1, wherein at least a part of the magnet overlaps the magnetic sensor in the radial direction. A recess is provided in at least one of the lower surface of the upper body and the upper surface of the lower body.
The valve device according to claim 1 or 2, wherein the accommodation space is a space inside the recess. The valve device according to claim 3, wherein the recess is provided on the lower surface of the upper body. Said sensor module,
A seal member disposed at the lower end portion of the front Kikatamitai,
Have,
The valve device according to any one of claims 1 to 4, wherein the sealing member is crimped to the upper surface of the lower body. The upper body
The first part where the spool hole is provided and
A second portion connected to one side in the axial direction of the first portion and having an upper end arranged below the upper end of the first portion.
Have,
The opening is opened on one surface of the first portion in the axial direction.
The axially one end of the spool valve is located above the second portion.
The accommodation space is arranged between the second portion and the lower body in the vertical direction.
The valve device according to any one of claims 1 to 5, wherein the magnet is fixed to a portion of the spool valve that protrudes to the outside of the spool hole. The accommodation space is arranged radially outside the spool hole.
The valve device according to any one of claims 1 to 5, wherein the magnet is fixed to a portion of the spool valve arranged inside the spool hole. The sensor module has a connection terminal that is electrically connected to the magnetic sensor.
The oil passage body has a through hole connecting the inside of the accommodation space and the outside of the oil passage body.
The valve device according to any one of claims 1 to 7, wherein a part of the connection terminal is exposed to the outside of the oil passage body through the through hole and is connected to an external power source. The spool valve is cylindrical and has a columnar shape.
The magnet is cylindrical and is fitted to the spool valve.
The magnet has a protrusion extending in the radial direction.
The valve device according to any one of claims 1 to 8, wherein the oil passage body has a groove into which the protrusion is inserted and extends in the axial direction. The spool valve is cylindrical and has a columnar shape.
The magnet is cylindrical and is fitted to the spool valve.
The valve device according to any one of claims 1 to 8, wherein the outer peripheral surface of the spool valve and the inner peripheral surface of the magnet have flat flat portions facing each other in the radial direction.

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