JP6855827B2 - 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.

The valve device of one aspect of the present invention is arranged along an oil passage body having an oil passage through which oil flows, and a central axis attached to the oil passage body and 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 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, and the end portion on one side in the axial direction of the spool valve is. The oil passage body projects to the outside of the spool hole through the opening, and the oil passage body has an accommodating portion on the upper surface for accommodating at least a part of the sensor module, and the sensor module directly accommodates the accommodating portion. The accommodating portion is fixed and is a recess recessed downward from the upper surface of 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 the 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, which is a sectional view taken along line III-III in FIG. FIG. 4 is a cross-sectional view showing a spool valve and a magnet, which are another example of the first embodiment. FIG. 5 is an exploded perspective view showing a spool valve and a magnet, which are another example of the first embodiment. FIG. 6 is a perspective view showing the valve device of the second embodiment. FIG. 7 is a diagram showing a valve device of the second embodiment, which is a sectional view taken along line VII-VII in FIG.

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. That is, the oil passage body 20 has a spool hole 23. As shown in FIG. 1, in the present embodiment, the cross-sectional shape of the spool hole 23 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 this 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 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 an accommodating portion 25 accommodating at least a part of the sensor module 40 on the upper surface thereof. In the present embodiment, the accommodating portion 25 is arranged on the upper surface 22d of the second portion 22b of the upper surface of the oil passage body 20. The accommodating portion 25 is an upper surface of the oil passage body 20, that is, a recess recessed downward from the upper surface of the second portion 22b in the present embodiment. As shown in FIG. 2, the outer shape of the accommodating portion 25 as viewed from above is substantially square. A through hole 26 is provided in the bottom surface 25a of the accommodating portion 25. The through hole 26 penetrates from the bottom surface 25a to the bottom surface 22f of the accommodating portion 25 in the vertical direction Z. Female screw holes recessed downward are provided at the four corners of the bottom surface 25a.

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. 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 from the rear side to the front side. 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 entire second small diameter portion 31b may be arranged outside the spool hole 23 by moving 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. 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 and the connection between the oil passages in the oil passage body 20 is switched, so that the gear of the vehicle is switched.

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 circuit board 43, a lid 41, a magnetic sensor 44 that detects the magnetic field of the magnet 50, a seal member 42, and a connection terminal 45a. The circuit board 43 has a substantially square plate shape extending in a direction orthogonal to the vertical direction Z. As shown in FIG. 3, the circuit board 43 is directly fixed to the bottom surface 25a of the accommodating portion 25. Holes that penetrate the circuit board 43 in the vertical direction Z are provided at the four corners of the circuit board 43. A magnetic sensor 44 is attached to the upper surface of the circuit board 43.

As shown in FIGS. 2 and 3, the lid 41 has a covered box shape that opens downward. The outer shape of the lid 41 as viewed from above is substantially square. As shown in FIG. 3, at least the lower portion of the lid 41 is inserted into the accommodating portion 25. In the present embodiment, the lid 41 is fitted in the accommodating portion 25. The lower end of the lid 41 comes into contact with the bottom surface 25a. The vertical Z dimension of the lid 41 is larger than the vertical Z dimension of the accommodating portion 25. The upper end of the lid 41 projects upward from the accommodating portion 25. The lid 41 covers the upper side of the circuit board 43. Holes that penetrate the lid 41 in the vertical direction Z are provided at the four corners of the upper surface of the lid 41. The lid 41 is made of a non-magnetic material. The lid 41 is made of resin, for example.

As shown in FIGS. 2 and 3, the circuit board 43 and the lid 41 are directly fixed to the oil passage body 20 by the four screws 46. The screw 46 is tightened from the upper side of the lid 41 through the hole of the lid 41 and the hole of the circuit board 43 into the female screw hole of the bottom surface 25a. As a result, the circuit board 43 and the lid 41 are co-tightened and fixed to the bottom surface 25a, and the sensor module 40 is directly fixed to the accommodating portion 25. Since the lid 41 and the circuit board 43 are fastened together, the number of screws 46 for fixing the sensor module 40 can be reduced, and the time and effort for fixing the sensor module 40 can be reduced.

As described above, according to the present embodiment, the accommodating portion 25 accommodating at least a part of the sensor module 40 is provided in the oil passage body 20, and the sensor module 40 is directly fixed to the accommodating portion 25. Therefore, the sensor module 40 can be fixed to the oil passage body 20 with higher positional accuracy than when the sensor module 40 is fixed to the oil passage body 20 via another member. 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 accurately detected 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. .. Moreover, it is easy to make the valve device 10 compact and lightweight. Further, since the accommodating portion 25 is provided on the upper surface of the oil passage body 20, it is easy to fix the sensor module 40 to the accommodating portion 25. This makes it easy to assemble the valve device 10.

Further, according to the present embodiment, since the accommodating portion 25 is a recess recessed downward from the upper surface of the oil passage body 20, the sensor module 40 can be stably arranged by fitting the sensor module 40 into the accommodating portion 25. ..

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.

Further, according to the present embodiment, the spool hole 23 and the accommodating portion 25 are provided in the upper body 22. Therefore, for example, as compared with the case where the spool hole 23 and the accommodating portion 25 are separately provided in the lower body 21 and the upper body 22, the magnet 50 fixed to the spool valve 30 and the sensor module 40 fixed to the accommodating portion 25 The relative position accuracy with and can be improved. Therefore, the sensor module 40 can more accurately detect the displacement of the spool valve 30 in the axial direction Y.

The magnetic sensor 44 is attached to the upper surface of the circuit board 43. As a result, the magnetic sensor 44 is fixed to the oil passage body 20 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.

As shown in FIG. 3, 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 that at least a part of 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 with 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 top surface of the lid 41 so as to face the top surface of the lid 41 via a gap. The top surface of the lid 41 is a surface facing downward. A lid 41 is arranged between the magnetic sensor 44 and the magnet 50 in the vertical direction Z. Here, since the lid 41 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 lid 41.

The seal member 42 is a rectangular annular O-ring. The seal member 42 is arranged at the lower end of the lid 41. More specifically, as shown in FIG. 2, the seal member 42 is fitted and attached to the outer periphery of the lower end portion of the lid 41. As shown in FIG. 3, the seal member 42 is arranged between the inner surface of the accommodating portion 25 and the lid 41. Therefore, the seal member 42 can seal between the lid 41 and the upper body 22. As a result, it is possible to prevent oil from flowing into the accommodating portion 25. Therefore, it is possible to prevent the oil from coming into contact with the magnetic sensor 44 and the circuit board 43, and it is possible to prevent the sensor module 40 from being damaged.

As shown in FIG. 1, the connection terminal 45a is held by the lid 41. The lower end of 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. 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 penetrates the lid 41 in the vertical direction Z and projects upward from the lid 41. A part of the first stretched portion is embedded and held in the lid 41. The upper end portion of the first stretched portion and the second stretched portion are exposed to the outside of the oil passage body 20. In this way, a part of the connection terminal 45a penetrates the lid 41 in the vertical direction Z and is exposed to the outside of the oil passage body 20.

A part of the exposed connection terminal 45a, more particularly the tip of the second extension, 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 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 magnet 50 may have a protrusion extending in the radial direction. In this case, the oil passage body 20 has a groove portion into which the protrusion is inserted and extends in the axial direction. The groove portion is arranged on one side of the accommodation portion in the left-right direction X, and the protrusion portion extends in the left-right direction X, for example, and then extends downward and is inserted into the groove portion. According to this configuration, it is possible to prevent the magnet 50 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 50 with higher accuracy.

Further, the spool valve and the magnet may have a configuration like the spool valve 130 and the magnet 150 shown in FIG. As shown in FIG. 4, a flat flat portion 134a is provided on the outer peripheral surface of the magnet mounting portion 134 of the spool valve 130. The cross-sectional shape of the magnet mounting portion 134 is a D-cut shape in which a part of a circle is cut out with a straight line. A flat flat portion 150b is provided on the inner peripheral surface of the magnet 150.

The flat portion 134a and the flat portion 150b face each other in the radial direction. As described above, the outer peripheral surface of the spool valve 130 and the inner peripheral surface of the magnet 150 have flat flat portions 134a and 150b facing each other in the radial direction, so that the magnet 150 is circumferentially oriented with respect to the spool valve 130. Relative rotation can be suppressed. Therefore, the magnetic sensor 44 can easily detect the magnetic field of the magnet 150 with higher accuracy.

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, the connecting portion 233 of the spool valve 230 has a magnet mounting recess 233b that penetrates the recessed connecting portion 233 from the lower side to the upper side in the left-right direction X. The magnet mounting recess 233b overlaps the connecting recess 33a in the vertical direction Z. Unlike the spool valve 30 described above, the spool valve 230 does not have a magnet mounting portion 34.

The magnet 250 is a columnar shape extending in the axial direction Y. The shape of the magnet 250 viewed along the axial direction Y is a semicircular shape that is convex downward. The magnet 250 is fitted into the magnet mounting recess 233b. The magnet 250 is fixed to the spool valve 230 with, for example, an adhesive. According to this configuration, the magnet 250 does not rotate relative to the spool valve 230 in the circumferential direction, and the magnetic sensor 44 can easily detect the magnetic field of the magnet 250 more accurately. Further, the dimension of the spool valve 230 in the axial direction Y can be reduced.

<Second Embodiment>
As shown in FIGS. 6 and 7, in the valve device 310 of the present embodiment, the spool valve 330 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. 7, the magnet 350 is fixed to the outer peripheral surface of the first small diameter portion 31a. The magnet 350 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 350 viewed along the axial direction Y is a semicircular shape that is convex upward. The magnet 350 is fixed to the upper 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 350 contacts the rear end of the second large diameter portion 32b. As described above, in the present embodiment, the magnet 350 is fixed to the portion of the spool valve 330 that is arranged inside the spool hole 23.

In the present embodiment, the accommodating portion 325 is a recess in the upper surface of the upper body 322 that is recessed downward from the upper surface of the first portion 322a. The accommodating portion 325 is arranged on the radial outer side of the spool hole 23. In the present embodiment, the accommodating portion 325 is arranged above the spool hole 23.

According to such a configuration, the sensor module 340 accommodated in the accommodating portion 325 can be arranged in the first portion 322a provided with the spool hole 23. Therefore, the second portion 322b can be easily miniaturized in the axial direction Y. Further, the spool valve 330 is also easy to be miniaturized in the axial direction Y. Therefore, according to the present embodiment, the valve device 310 can be miniaturized in the axial direction Y. Unlike the first embodiment, the second portion 322b is not provided with the accommodating portion 25.

The bottom surface 325a of the accommodating portion 325 is provided with an accommodating recess 326 recessed downward. In the sensor module 340, the magnetic sensor 344 is attached to the lower surface of the circuit board 343. The magnetic sensor 344 is arranged inside the accommodating recess 326. As a result, the magnetic sensor 344 and the magnet 350 can be arranged closer to each other. Therefore, the sensor module 340 can more accurately detect the displacement of the spool valve 330 in the axial direction Y.

Further, according to the present embodiment, since the sensor module 340 does not overlap the portion of the spool valve 330 that protrudes to the outside of the spool hole 23 in the vertical direction Z, it is after the spool valve 330 is inserted into the spool hole 23. Also, the sensor module 340 can be accommodated in the accommodating portion 325. That is, according to the present embodiment, either the step of attaching the spool valve 330 to the oil passage body 320 or the step of attaching the sensor module 340 to the oil passage body 320 may be performed first, and the procedure for assembling the valve device 310 Can be widened.

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 accommodating portion may be other than the recess. For example, the accommodating portion may be a step provided on the upper surface of the upper body. In this case, for example, the accommodating portion may open in the axial direction Y or the left-right direction X. Further, the upper surface of the oil passage body provided with the accommodating portion may be the surface of the upper body or the surface of the lower body as long as it is a surface of the oil passage body that is exposed to the upper side. For example, when the upper body does not have a second portion and the upper surface of the lower body is exposed upward, a housing portion may be provided on the upper surface of the exposed lower body.

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.

10,310 ... Valve device, 20 ... Oil passage body, 21 ... Lower body, 22,322 ... Upper body, 22a, 322a ... First part, 22b, 322b ... Second part, 23 ... Spool hole, 23a ... Opening , 25, 325 ... Accommodating part, 25a, 325a ... Bottom surface, 30, 130, 230, 330 ... Spool valve, 40, 340 ... Sensor module, 41 ... Lid, 42 ... Seal member, 43, 343 ... Circuit board, 44 , 344 ... Magnetic sensor, 50, 150, 250, 350 ... Magnet, 134a, 150b ... Flat part, J ... Central axis, Y ... Axial direction, Z ... Vertical direction

Claims (8)

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 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 an accommodating portion on the upper surface for accommodating at least a part of the sensor module.
The sensor module is fixed directly to the housing and is fixed .
The accommodating portion is a valve device which is a recess recessed downward from the upper surface of 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. The valve device according to claim 1 or 2, wherein the sensor module is fitted in the housing. The sensor module is
A circuit board to which the magnetic sensor is attached and directly fixed to the bottom surface of the housing portion,
A lid that covers the upper side of the circuit board and at least the lower part is inserted into the housing portion.
A seal member arranged between the inner surface of the accommodating portion and the lid body,
Have,
The lid is fitted into the housing and is fitted.
The valve device according to any one of claims 1 to 3, wherein the lower end of the lid is in contact with the bottom surface of the accommodating portion. The oil passage body is
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 accommodating portion is arranged in the second portion.
The valve device according to any one of claims 1 to 4, wherein the magnet is fixed to a portion of the spool valve that protrudes to the outside of the spool hole. The accommodating portion is arranged radially outside the spool hole.
The valve device according to any one of claims 1 to 4, wherein the magnet is fixed to a portion of the spool valve arranged inside the spool hole. The spool valve is cylindrical and has a columnar shape.
The magnet has a cylindrical shape and is fitted to the spool valve.
The valve device according to any one of claims 1 to 6, 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. The oil passage body is
With the lower body
An upper body that is placed on top of the lower body and
Have,
The valve device according to any one of claims 1 to 7, wherein the spool hole and the accommodating portion are provided in the upper body.

Images