CN210141362U - Slide valve device - Google Patents

Abstract

Provided is a slide valve device capable of fixing a magnet to a valve body simply and quickly without using an adhesive. A slide valve device (1) is provided with: a housing (10) having a spool bore (20); a valve body (30) that is disposed so as to be displaceable in the axial direction within a valve body hole (20), the valve body (30) having a recess (70) on an outer peripheral portion (31); a magnet (50) disposed in the recess (70); a magnetic sensor (60) which is provided in the housing (10), detects a change in the magnetic field of the magnet (50), and converts the change in the magnetic field into an electric quantity; and a binding member (80) made of a non-magnetic material, wherein the binding member (80) wraps the magnet (50) and the valve body (30) from the radial outside to fix the magnet to the valve body.

Description

Slide valve device

Technical Field

The utility model relates to a slide valve device.

Background

A technique related to a sensor unit is disclosed, which detects a magnetic force accompanying a magnet reciprocating movement and outputs an output signal corresponding to the detected magnetic force (see japanese patent application laid-open No. 2008-144834). This technique requires the following operations: since the magnet is fixed to the magnet holder and then fitted into the rail of the sensor unit, the assembly work is complicated and the workability is poor. A slide valve body and a magnet holder are arranged outside the valve body, and the occupied space of the sensor unit and the entire device is increased.

It is considered to improve the assembling workability and to make the apparatus compact by adopting a structure in which a magnet is directly bonded to a valve element. However, if a temperature change occurs at the interface between the adhesive and the valve body, the interface may be peeled off due to the difference in linear expansion coefficients between the two materials, and the magnet may be detached. In addition, when bonding the magnet, it takes time until the adhesive is cured, and the time required for the assembly process becomes long.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide a slide valve device capable of easily and quickly fixing a magnet to a valve body without using an adhesive.

A first aspect of the present invention provides a slide valve device, characterized in that: a housing having a spool bore; a valve body disposed so as to be displaceable in an axial direction in the valve body hole, the valve body having a recess on an outer peripheral portion thereof; a magnet disposed in the recess; a magnetic sensor provided in the housing, the magnetic sensor detecting a change in a magnetic field of the magnet and converting the change in the magnetic field into an electric quantity; and a binding member made of a non-magnetic material, the binding member wrapping the magnet and the valve body from a radial outer side to fix the magnet to the valve body.

A second aspect of the present invention is the slide valve device according to the first aspect, wherein the electric quantity is a potential difference.

A third aspect of the present invention is the slide valve device according to the first or second aspect, wherein in a state in which the binding member is attached to the spool, an inner peripheral portion of the binding member is in contact with an outer peripheral portion of the spool and an outer peripheral portion of the magnet disposed in the recess, and the magnet is pressed against a bottom of the recess.

A fourth aspect of the present invention is the slide valve device according to the first aspect, wherein the curvature of the outer peripheral portion of the magnet is identical to the curvature of the outer peripheral portion of the valve body, and the arrangement of the magnet is adjusted to a central position in a width direction of the concave portion in a state where the binding member is attached.

A fifth aspect of the present invention is the slide valve device according to the first aspect, wherein both ends in the width direction of the concave portion are open to an outer peripheral portion of the valve element.

A sixth aspect of the present invention is the slide valve device of the first aspect, wherein the spool hole has an opening portion that is open to the outside of the housing, and the recess is provided in the end portion of the spool on the opening side.

A seventh aspect of the present invention is the slide valve device according to the first aspect, wherein the binding member is formed of an elastic member.

A seventh aspect of the present invention is the slide valve device according to the seventh aspect, wherein the elastic member is formed of a plate spring having a C-shaped radial cross section.

According to the utility model discloses, can be simply and be fixed in the case with magnet fast and need not to use the bonding agent.

Drawings

Fig. 1 is an exploded perspective view of a spool valve device according to the present embodiment.

Fig. 2 is an axial longitudinal sectional view of the spool valve device of the present embodiment.

Fig. 3 is a perspective view of the valve body in a state where the binding member is attached according to the present embodiment.

Fig. 4 is a partial perspective cross-sectional view of the valve body in a state where the binding member is attached according to the present embodiment.

Fig. 5 is a radial cross-sectional view of the valve body in a state where the binding member is attached according to the present embodiment.

Description of the reference symbols

1: a slide valve device; 10: a housing; 20: a spool bore; 30: a valve core; 31: an outer peripheral portion of the valve element; 50: a magnet; 51: an outer peripheral portion of the magnet; 60: a magnetic sensor; 70: a recess; 71: a bottom of the recess; 80: a binding member; 81: an inner peripheral portion of the binding member; r1: curvature of the outer periphery of the magnet; r2: curvature of the outer periphery of the valve body.

Detailed Description

Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In each drawing, the Z-axis direction is defined as the vertical direction Z. Let the X-axis direction be a width direction X in the horizontal direction perpendicular to the up-down direction Z. The Y-axis direction is an axial direction Y perpendicular to the width direction X in a horizontal direction perpendicular to the vertical direction Z. The positive side in the vertical direction Z is referred to as "upper side", and the negative side is referred to as "lower side". The positive side in the axial direction Y is referred to as "opening side", and the negative side is referred to as "closing side". The open side corresponds to one axial side and the closed side corresponds to the other axial side. The terms "upper side", "lower side", "opening side", "closed side", "vertical direction" and "width direction" are only names for describing the relative positional relationship of the respective parts, and the actual positional relationship and the like may be positional relationships other than the positional relationship and the like indicated by these terms.

A structure of a slide valve device according to an embodiment of the present invention will be described with reference to fig. 1 to 5. Fig. 1 is an exploded perspective view of a spool valve device according to the present embodiment. Fig. 2 is an axial longitudinal sectional view of the spool valve device of the present embodiment.

The spool valve device is mounted in a transportation facility such as an automobile, for example, and controls driving of a continuously variable Transmission by supplying oil (Automatic Transmission Fluid) to the continuously variable Transmission in the transportation facility. As shown in fig. 1, the spool valve device 1 includes a housing 10, a spool hole 20, a spool 30, a recess 70, a magnet 50, a magnetic sensor 60, and a binding member 80.

The housing 10 is a metal valve body (hereinafter, the housing is referred to as a "valve body") having a plurality of oil passages (not shown) therein. The plurality of oil passages are complicatedly staggered inside the valve body 10. The valve body 10 is formed by stacking a plurality of (for example, 2 to 3) substantially plate-shaped members in a plurality of layers along the upper and lower sides. The plurality of members are fixed to each other by, for example, screwing in the stacking direction. In addition, a portion of the valve body 10 is shown in fig. 1.

As shown in fig. 2, the valve body 10 is composed of a lower valve body 11 and an upper valve body 12. The lower valve body 11 includes a lower valve body 11a and a partition plate 11b disposed above the lower valve body 11a in an overlapping manner. In the present embodiment, the upper surface of the lower valve body 11 corresponds to the upper surface of the partition plate 11b, and is perpendicular to the vertical direction Z. The upper valve body 12 is disposed above the lower valve body 11 in an overlapping manner. The lower surface of the upper valve body 12 is perpendicular to the vertical direction Z. The lower surface of the upper valve body 12 contacts the upper surface of the lower valve body 11, i.e., the upper surface of the partition plate 11 b.

The valve body hole 20 is a cylindrical space and is provided in the upper valve body 12. The spool hole 20 extends in the axial direction from the side surface of the component constituting the upper valve body 12 toward the inside of the component. That is, as shown in fig. 1, the upper valve body 12 has a spool hole 20 extending in the axial direction Y. In the present embodiment, the cross-sectional shape of the valve body hole 20 perpendicular to the axial direction Y is a circular shape centered on the center axis J. The central axis J extends in the axial direction Y. The radial direction about the central axis J is simply referred to as the "radial direction", and the circumferential direction about the central axis J is simply referred to as the "circumferential direction".

The valve body hole 20 of the present embodiment has an opening 21 at one end in the axial direction Y (hereinafter, one end in the axial direction Y is referred to as an "opening side"). The other end portion in the axial direction of the spool hole 20 is closed (hereinafter, the other end side in the axial direction Y is referred to as a "closed side"). The valve core hole 20 has a valve core hole body 20a and an introduction hole portion 20 b. The inner diameter of the introduction hole portion 20b is set larger than the inner diameter of the valve core hole body 20 a. The introduction hole portion 20b is connected to the spool hole body 20 a. The spool hole 20 may be open on both sides in the axial direction Y, for example. The spool hole 20 is connected to a plurality of oil passages.

The upper valve body 12 has through holes 22a, 22b, and 22c at the end of the upper valve body 12 on the opening side. The through hole 22a penetrates the upper valve body 12 in the vertical direction Z from the upper surface of the upper valve body 12 to the inner circumferential surface of the introduction hole portion 20 b. The through hole 22b penetrates the upper valve body 12 in the vertical direction Z from the lower surface of the upper valve body 12 to the inner peripheral surface of the inlet hole 20 b. As shown in fig. 1, the through- holes 22a and 22b are rectangular in shape and long in the width direction X when viewed from above. The through- holes 22a and 22b overlap each other when viewed from above.

The through hole 22c penetrates the upper valve element 12 in the axial direction Y from the opening surface of the upper valve element 12 to the through hole 22 b. The through hole 22c is provided at the lower end portion of the front surface of the upper valve body 12. The through hole 22c is open on the lower side. As shown in fig. 1, the through-hole 22c has a rectangular shape elongated in the left-right direction X when viewed from the front. The centers of the through holes 22a, 22b, and 22c in the width direction X are, for example, at the same positions as those of the center axis J in the width direction X.

As shown in fig. 1, a portion of the upper valve body 22 where the spool hole 20 is provided protrudes upward from the other portion of the upper valve body 12. The upper surface of the end of the protruding portion on the opening side is a semi-arc curved surface protruding upward. The through hole 22a opens at the upper end of the semi-arc curved surface. The lower valve body 11a, the partition plate 11b, and the upper valve body 12 are, for example, each a single member. The lower valve body 11a, the partition plate 11b, and the upper valve body 12 are formed by die casting a metal such as an aluminum alloy, and are made of a non-magnetic material.

The valve body 30 is disposed in the valve body hole 20, and is a deformed cylindrical member extending in the axial direction Y about the central axis J. The valve body 30 is disposed along a central axis J extending in an axial direction Y intersecting the vertical direction Z. The valve body 30 has a large diameter portion 30a, a medium diameter portion 30b, and a small diameter portion 30 c. The large diameter portion 30a has an outer diameter substantially equal to the inner diameter of the introduction hole portion 20 b. The intermediate diameter portion 30b has an outer diameter smaller than the large diameter portion 30a, and has an outer diameter substantially equal to the inner diameter of the spool hole body 23 a. The small diameter portion 30c has an outer diameter smaller than that of the medium diameter portion 30 b.

The large diameter portion 30a is disposed at one end portion of the valve body 30 in the axial direction Y. The large diameter portion 30a is disposed in the introduction hole portion 20b so as to be displaceable in the axial direction Y. The intermediate diameter portion 30b is slidable with respect to the inner peripheral surface of the spool hole body 20a and is displaceable in the axial direction Y. The intermediate diameter portion 30b functions as a valve portion that opens and closes an oil passage that opens to the inner peripheral surface of the valve body hole 20 a.

The spool 30 is disposed in the spool hole 20 so as to be displaceable in the axial direction Y. The valve body 30 is displaced in the axial direction Y in the valve body hole 20a, and opens and closes an oil passage that opens in the inner peripheral surface of the valve body hole 20 a. Although not shown, oil pressure is applied to the rear end portion of the valve body 30, or a signal pressure is applied from a driving device such as a solenoid actuator to the rear end portion of the valve body 30.

One end side of the valve body 30 in the axial direction faces the opening side of the valve body hole 20, and has a housing recess 33. In the state of fig. 2, at least the other axial end of the coil spring 40 is accommodated in the accommodating recess 33. The coil spring 40 urges the valve body 30 toward the other axial side (closing side). The coil spring 40 is disposed in the spool hole 20 in a state of being compressed in the axial direction with respect to the natural length. Therefore, the valve body 30 always receives a reaction force toward the axial direction closing side from the coil spring 40. Further, the more the position of the valve body 30 is displaced toward the axial opening side, the more the coil spring 40 is compressed, and therefore the reaction force that the valve body 30 receives from the coil spring 40 is larger.

In the present embodiment, the large diameter portion 30a of the valve body 30 slides on the inner circumferential surface of the introduction hole portion 20b and is displaced in the axial direction Y. A stepped surface 23 is provided between the spool hole body 20a and the introduction hole portion 20 b. The other side surface 34 of the large diameter portion 30a can contact the stepped surface 23 between the valve body hole 20a and the introduction hole portion 20 b. The other side surface 34 of the large diameter portion 30a contacts the step surface 23, and displacement of the spool 30 and the magnet 50 to the axial direction closing side is restricted.

As shown in fig. 1 and 2, the recess 70 is disposed in the outer peripheral portion 31 of the large diameter portion 30a of the valve body 30. The recess 70 is provided at the end of the valve body 30 on the opening side. The bottom 71 of the recess 70 is constituted by a plane. Both ends of the recess 70 in the width direction X are open to the outer peripheral portion 31 of the valve body 30. That is, the recess 70 is defined by a pair of wall portions 72 and 73 surrounded by an arc and a chord, and a bottom portion 71 formed by a flat surface.

The magnet 50 is disposed in the recess 70 of the large-diameter portion 30a of the spool 30. The magnet 50 is a permanent magnet made of a ferromagnetic material. Examples of the magnet 50 include a lattice phase transformation type KS magnet, a precipitation type MK magnet, and a powder type ferrite magnet. The magnet 50 has a cylindrical lens-like shape. That is, the rectangular outer peripheral portion 51 of the magnet 50 is formed of, for example, a surface curved in an arc shape in the circumferential direction.

The magnetic sensor 60 is an element that detects a change in the magnetic field of the magnet 50 and converts the change in the magnetic field into a potential difference. The magnetic sensor 60 is disposed in the housing 61. The housing 61 is a rectangular parallelepiped box shape flat in the vertical direction Z, and is provided on the upper valve body 12. The magnetic sensor 60 is attached to the upper portion of the upper valve body 12 via a housing 61. The magnetic sensor 60 is a non-contact type element such as a hall element. The "hall effect" is a phenomenon in which when a magnetic field in a vertical direction is applied to a current flowing through a substance, an electromotive force is generated in a direction perpendicular to both the current and the magnetic field. In addition to the magnetic sensor 60, an amplifier, a comparator, a schmitt trigger, and the like are incorporated in the case 61, and the entire magnetic sensor module is configured. The magnetic sensor 60 is not limited to the hall element, and may be a magnetoresistive element, for example.

The magnet 50 is displaced in the axial direction Y in accordance with the displacement of the valve body 30 in the axial direction Y. When the position of the magnet 50 in the axial direction Y changes, the magnetic field of the magnet 50 passing through the magnetic sensor 60 changes. The magnetic sensor 60 detects a change in the magnetic field of the magnet 50, and converts the change in the magnetic field into an electric quantity, thereby being able to detect the position of the magnet 50 in the axial direction Y. Here, "electric quantity" means a potential difference (voltage output). Specifically, an angle obtained by performing Atan2 calculation on the Z-direction magnetic flux and the circumferential magnetic flux is converted into a voltage output. That is, the position of the valve body 30 in the axial direction Y can be detected by detecting the position of the magnet 50 in the axial direction Y.

At least a part of the magnet 50 overlaps the magnetic sensor 60 in a direction parallel to the vertical direction Z. In addition, the "at least a part of the magnet 50 overlaps with the magnetic sensor 60 in the vertical direction Z" may be at least a part of the magnet 50 overlaps with the magnetic sensor 60 in the vertical direction Z at a position in a range in which the valve body 30 to which the magnet 50 is directly fixed moves in the axial direction. In the present embodiment, as long as the spool 30 is within the range of movement in the axial direction Y, a part of the magnet 50 overlaps the magnetic sensor 60 in the vertical direction Z at any position. Therefore, the magnetic sensor 60 can easily detect the magnetic field of the magnet 50. Therefore, the displacement of the magnet 50 in the axial direction Y, that is, the displacement of the valve body 30 in the axial direction Y can be detected with higher accuracy by the magnetic sensor 60.

Fig. 3 is a perspective view of the valve body in a state where the binding member is attached according to the present embodiment. As shown in fig. 1 to 3, the binding member 80 is a member that wraps the magnet 50 and the valve body 30 from the radial outside and fixes the magnet 50 to the valve body 30. The binding member 80 of the present embodiment is formed of, for example, a plate spring having a C-shaped radial cross section. The C-shaped plate spring is an elastic member formed by molding a band-shaped metal spring material into a C-shape. The binding member 80 is not limited to the illustrated C-shaped plate spring as long as it is formed of an elastic member. The binding member 80 may be, for example, a wire spring having a C-shaped radial cross section, but when a plate spring is used, the binding member has excellent adhesion to the outer peripheral portion 51 of the magnet 50 and the outer peripheral portion 31 of the valve body 30.

The binding member 80 is made of a material (e.g., a non-magnetic material) that does not interfere with the detection of the magnetic flux. The bundling member 80 is made of a non-magnetic material so as not to interfere with the magnetic field generated by the magnet 50. The binding member 80 may be made of, for example, a nonmagnetic metal or a resin. When the binding member 80 is made of metal, the dimensional accuracy of the binding member 80 can be improved. Examples of the nonmagnetic metal include austenitic stainless steel for springs containing a high carbon content. When the binding member 80 is made of resin, the binding member 80 can be easily manufactured, and the manufacturing cost can be reduced. As the binding member 80 made of resin, a resin band having elastic force or the like can be used.

Fig. 4 is a partial perspective cross-sectional view of the valve body in a state where the binding member is attached according to the present embodiment. Fig. 5 is a radial cross-sectional view of the valve body in a state where the binding member is attached according to the present embodiment. As shown in fig. 3 and 4, the binding member 80 is attached to the recess 70 of the large-diameter portion 30a of the spool 30. As shown in fig. 4 and 5, in a state where the binding member 80 is attached, the inner peripheral portion 81 of the binding member 80 contacts the outer peripheral portion 51 of the magnet 50 and the outer peripheral portion 31 of the valve body 30 disposed in the recess 70. The magnet 50 is pressed against the bottom 71 of the recess 70 by the binding member 80.

As described above, the recess 70 is defined by the pair of wall portions 72 and 73 surrounded by the arc and the chord and the bottom portion 71 formed by the flat surface. As shown in fig. 5, the binding member 80 surrounds the magnet 50 and the valve body 30 from the radial outside, thereby fixing the magnet 50 to the valve body 30. Here, the curvature R1 of the outer peripheral portion 51 of the magnet 50 matches the curvature R2 of the outer peripheral portion 31 of the large-diameter portion 30a of the valve body 30. Therefore, when the binding member 80 is attached, the arrangement of the magnet 50 is adjusted to the center position in the width direction X of the recess 70. In the attached state of the binding member 80, the magnet 50 is disposed at the center position in the width direction X of the concave portion 70.

As shown in fig. 1 and 2, the slide valve device 1 further has a fixing member 90 attached to the upper valve body 12. The fixing member 90 of the present embodiment is constituted by a holding member (hereinafter, the fixing member is referred to as "holding member"). The holding member 90 has a plate shape, and a plate surface thereof is parallel to the width direction X. The holding member 90 has an extending portion 91 and a bent portion 92. The extending portion 90a extends in the up-down direction Z. The extending portion 91 has a rectangular shape elongated in the vertical direction Z when viewed from the opening side. The extension 91 is inserted into the introduction hole 20b through the through hole 22 b. The upper end of the extension 91 is inserted into the through hole 22 a. The extension portion 91a closes a part of the opening on the front side of the inlet hole portion 20 b. The bent portion 92 is bent from the end of the lower side of the extension portion 91 toward the opening side. The bent portion 92 is inserted into the through hole 22 c. The holding member 90 is disposed on the opening side of the coil spring 40.

The other end of the coil spring 40 contacts the bottom surface of the housing recess 33. The end of the coil spring 40 on the opening side is in contact with the holding member 90. Thereby, the end of the coil spring 40 on the opening side is supported by the holding member 90. The holding member 90 receives an elastic force toward the opening side from the coil spring 40, and the extending portion 91 is pressed against the inner surface of the opening side in the through holes 22a and 22 b.

The coil spring 40 applies an elastic force to the valve body 30 toward the closed side by the end portion of the coil spring 40 on the opening side being supported by the holding member 90. Therefore, for example, the position of the valve body 30 in the axial direction Y can be maintained at a position where the oil pressure applied to the closed-side end portion of the valve body 30 or the force applied from the driving device such as the solenoid actuator is balanced with the elastic force of the coil spring 40. Thus, by changing the force applied to the closed-side end portion of the valve body 30, the position of the valve body 30 in the axial direction Y can be changed, and the opening and closing of the oil passage to the opening of the valve body hole 30 can be switched.

In the present embodiment, before the upper valve element 12 and the lower valve element 11 are stacked, the holding member 90 is inserted into the through-hole 22a from the opening of the through-hole 22b that opens in the lower surface of the upper valve element 12 through the through-hole 22b and the introduction hole portion 20 b. Then, as shown in fig. 2, the upper valve element 12 and the lower valve element 11 are stacked and combined in the vertical direction Z, and the bent portion 90b inserted into the through hole 22c is supported from below by the upper surface of the lower valve element 11. Thereby, the holding member 90 is attached to the valve body 10.

That is, in the spool valve device 1 of the present embodiment, first, the magnet 50 is disposed in the recess 70 formed in the large diameter portion 30a of the spool 30. Next, the binding member 80 is fixed so as to wrap the magnet 50 and the outer peripheral portion 31 of the large diameter portion 30 a. The spool 30 to which the magnet 50 is attached via the binding member 80 is inserted into the spool hole 20. Next, the other end of the coil spring 40 is housed in the housing recess 33 of the valve body 30. Then, the holding member 90 is inserted into the through holes 22a and 22b from the lower side to the upper side. The coil spring 40 is pressed from the opening side into the housing recess 33 by the holding member 90. Thereafter, the upper valve body 12 is overlapped on the upper side of the lower valve body 11, and the slide valve device 1 is assembled.

As described above, the spool valve device 1 of the present embodiment includes the binding member 80 made of a nonmagnetic material. The binding member 80 fixes the magnet 50 to the valve body 30 by wrapping the magnet 50 and the valve body 30 from the radial outside. Therefore, according to the spool valve device 1 of the present embodiment, the magnet 50 can be easily and quickly fixed to the spool 30 by the binding member 80 without using an adhesive.

In the spool valve device 1 of the present embodiment, in a state where the binding member 80 is attached to the valve body 30, the inner peripheral portion 81 of the binding member 80 contacts the outer peripheral portion 51 of the magnet 50 and the outer peripheral portion 31 of the valve body 30, which are disposed in the recess 70. Therefore, magnet 50 is pressed against bottom 71 of recess 70, and can be fixed easily and quickly.

In the spool valve device 1 of the present embodiment, the curvature R1 of the outer peripheral portion 51 of the magnet 50 matches the curvature R2 of the outer peripheral portion 31 of the valve body 30. Therefore, according to the spool valve device 1 of the present embodiment, in the state where the bundling member 80 is attached, the self-centering (self centering) function of adjusting the arrangement of the magnet 50 to the center position in the width direction X of the recess 70 can be exhibited.

In the spool valve device 1 of the present embodiment, both ends of the recess 70 in the width direction X are open to the outer peripheral portion 31 of the valve body 30. Therefore, according to the spool valve device 1 of the present embodiment, the magnet 50 easily slides in the width direction X on the bottom surface 71 formed by the flat surface of the recess 70. This allows the magnet 50 to be adjusted to the center position in the width direction X by the self-centering function.

In the spool valve device 1 of the present embodiment, the recess 70 to which the magnet 50 is attached is provided at the end on the opening side of the valve body 30. Since the recess 70 is located at the end of the valve body 30 on the opening side, the displacement of the valve body 30 in the axial direction Y is not affected. Further, the fixing work of the magnet 50 by using the binding member 80 is facilitated.

In the spool valve device 1 of the present embodiment, the binding member 80 is formed of an elastic member. Therefore, the binding member 80 can easily exhibit the self-centering function by the binding member 80 due to the elastic force.

Further, the elastic member of the spool valve device 1 of the present embodiment is formed of a plate spring having a C-shaped radial cross section. The C-shaped plate spring has excellent adhesion to the outer peripheral portion 51 of the magnet 50 and the outer peripheral portion 31 of the valve body 30. The C-shaped plate spring is easy to purchase and good in universality.

The above-described embodiments are for easy understanding of the present invention, and are not intended to be restrictive and explanatory. The elements provided in the embodiments, and the arrangement, materials, conditions, shapes, dimensions, and the like thereof are not limited to the examples and can be appropriately modified. Further, the structures shown in different embodiments can be partially replaced or combined with each other.

In the above-described embodiment, the continuously variable transmission of the transportation equipment is controlled, but the spool valve device 1 of the present invention may be controlled by an automatic transmission other than the continuously variable transmission. In addition, the slide valve device of the present invention may be controlled by a device other than an automatic transmission that is controlled by oil.

In the above-described embodiment, the spool is displaced in the horizontal direction, but the direction of displacement of the spool does not necessarily have to be the horizontal direction in the attitude when the spool valve device is used.

Further, the slide valve device is not particularly limited except for the structural elements of the present invention. The shape of the detailed portion such as the valve body and the valve body may be different from the shape shown in the drawings of the present application.

The magnet of the present embodiment is not bonded to the recess, but the case where the magnet is bonded to the recess using an adhesive is not excluded.

Claims (8)

1. A slide valve device, characterized in that,

the slide valve device includes:

a housing having a spool bore;

a valve body disposed so as to be displaceable in an axial direction in the valve body hole, the valve body having a recess on an outer peripheral portion thereof;

a magnet disposed in the recess;

a magnetic sensor provided in the housing, the magnetic sensor detecting a change in a magnetic field of the magnet and converting the change in the magnetic field into an electric quantity; and

and a binding member made of a non-magnetic material, the binding member wrapping the magnet and the valve body from a radial outer side to fix the magnet to the valve body.

2. The spool valve arrangement of claim 1,

the electrical quantity is a potential difference.

3. The spool valve device according to claim 1 or 2,

in a state where the binding member is attached to the valve body, an inner peripheral portion of the binding member is in contact with an outer peripheral portion of the valve body and an outer peripheral portion of the magnet disposed in the recess, and the magnet is pressed against a bottom of the recess.

4. The spool valve arrangement of claim 1,

the curvature of the outer periphery of the magnet is matched with the curvature of the outer periphery of the valve element, and the arrangement of the magnet is adjusted to the central position of the concave part in the width direction in the state that the bundling member is installed.

5. The spool valve arrangement of claim 1,

both ends of the recess in the width direction are open to the outer peripheral portion of the valve body.

6. The spool valve arrangement of claim 1,

the valve core hole has an opening portion that opens to the outside of the housing,

the recess is provided at an end portion on an opening side which is one end side of the valve body.

7. The spool valve arrangement of claim 1,

the binding member is constituted by an elastic member.

8. The spool valve arrangement according to claim 7,

the elastic member is formed of a plate spring having a C-shaped radial cross section.

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