JP2010078041A - Rolling bearing device with sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device with a sensor capable of fixing the sensor with sufficient strength, and easy in its attachment-detachment. <P>SOLUTION: A through-hole is respectively formed in fixing parts 10b, 13 and 12a of both the sensor 10 and sensor holders 12 and 11, and a pin 14 is inserted into both these through-holes so as to penetrate through both. A plurality of leg parts extending inward in the radial direction X in the shape of passing through a through-hole 12a1 of the other fixing part 12a, are arranged in the fixing parts 10b and 13 formed in the sensor 10, and these parts expand outward on its chip side in response to insertion of the pin 14. The expanded leg parts press the other fixing part 12a outward in the radial direction X on an inside end surface in the radial direction X. Thus, the other fixing part 12a is fixed in the shape of being sandwiched by the inside and outside in the radial direction X, and the sensor 10 is fixed to the sensor holders 12 and 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rolling bearing device with a sensor.

JP-A-9-304417

  In measuring rotational motion in various devices, a bearing device may be equipped with a measurement mechanism. For example, when an ABS (Antilock Brake System) mechanism is configured for a vehicle axle drive wheel, an ABS sensor that detects a rotational speed is often fixed to a bearing device. In that case, the ABS sensor is usually fixed to the cover member fitted to the outer peripheral surface of the bearing non-rotating wheel, and the ABS sensor detects the rotational speed by the change of the magnetic flux density due to the rotation of the magnet rotor fitted to the rotating wheel. .

  Various proposals have been made regarding the mounting method of the ABS sensor. For example, Patent Document 1 discloses an attachment method from the viewpoint of facilitating attachment / detachment of an ABS sensor. In the attachment method of Patent Document 1, the sensor is held in a holding case, and the holding case is attached to a cover fitted to the bearing fixed ring by a restraining member using elasticity.

  However, as a method of fixing the sensor to the bearing device, when the method of easily removing the sensor as in Patent Document 1 is adopted, an advantage that the sensor can be easily removed during inspection and repair can be obtained. There is also a tendency that the fixing becomes insufficient, and as a result, the position and orientation of the sensor may be shifted during use. The fact that the sensor is not in a normal position or orientation leads to a reduction in the rotational speed detection performance by the sensor, and the reliability of the measured value is reduced.

  An object of the present invention is to provide a rolling bearing device with a sensor that employs a new fixing method that can fix the sensor with sufficient strength when the sensor is fixed to the bearing device, and that makes it easy to attach and detach the sensor. Is to provide.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, the rolling bearing device of the present invention is
Fixed to the non-rotating wheel side to detect the rotation change of the rotating wheel by detecting the magnetic material attached so that the magnetic field alternately changes along the circumferential direction of the rotating wheel and the magnetic field of the magnetic material. A sensor-equipped rolling bearing device comprising:
The sensor holding body is fixed to the non-rotating wheel side, and the sensor holding body has a fixing portion in which a through hole for fixing the sensor is formed. On the other hand, the sensor is fixed to the sensor holding body. Having a fixing part formed with a through hole for,
The fixing parts of both the sensor holding body and the sensor are arranged in contact with each other so that the through holes communicate with each other, and a pin is inserted through each of the through holes to fix both of the fixing parts. Has been
Among the fixed parts of both the sensor holding body and the sensor, the one arranged on the opposite side of the pin insertion direction is the first fixing part, the one arranged on the pin insertion direction side is the second fixing part, When the through hole of the first fixing portion is the first hole and the through hole of the second fixing portion is the second hole, the first fixing portion is inserted from the peripheral wall portion forming the first hole on the insertion direction side. A plurality of legs extending in the direction are provided so as to sandwich a plurality of slits in the circumferential direction of the peripheral wall, and the legs are inserted through the second hole of the second fixing part,
Furthermore, as the pins are inserted into the first hole and the second hole, the leg portions of the first fixing part undergo elastic deformation that radially expands with their distal ends spaced outward from the insertion axis. A part of the outer end face facing the opposite side of the insertion axis side of each of the leg portions spread in the direction so as to press the peripheral edge of the second hole on the insertion direction side of the second fixing portion to the insertion direction opposite side. The second fixing portion is formed between the end surface on the insertion direction side of the first fixing portion and the outer end surface of the leg portion when the pin is inserted so as to be in the pressed state. And fixed to the first fixing portion.

  According to the present invention, the fixing parts of both the sensor holding body and the sensor are arranged in an overlapping manner, and both of them are fixed by inserting the pins through the through holes provided in both of them. Has been. Both can be easily fixed by simply inserting a pin, and conversely, when removing the sensor, it can be easily removed simply by removing the pin. Specifically, through holes are provided in both the first member that forms one of the sensor holding body and the sensor and the second member that forms the other, and the first member has a peripheral portion of the through hole, A plurality of leg portions extending through the through hole of the second member are formed. The leg portions are structured such that, as the pins are inserted, the distal ends of the legs expand radially and turn around the back surface of the second member, whereby the second member is fixed to the first member. That is, the first member has a fixing structure in which the second member is sandwiched, and fixing in a form in which the positional deviation between the two members hardly occurs is possible. In addition, since the leg portion of the first member spreads radially on the back surface side of the second member, the leg portion of the first member is in contact with the back surface of the second member so as to surround the inserted pin. Obtainable.

  In the present invention, a plurality of groove portions extending in the insertion direction are formed in the peripheral wall portion forming the first hole, and the peripheral wall portion can be formed as a protrusion between the adjacent groove portions. In this case, the pin can be configured to be inserted into the first hole formed on the projecting center side of the ridge portion. According to this configuration, the pin inserted for fixing the sensor holding body and the sensor can be firmly fixed by press-fitting, and there is no fear that the sensor holding body and the sensor are loosened due to the displacement of the pin. Further, when the pin is press-fitted between the protruding portions, the groove portion functions as a clearance allowing the deformation of the protruding portion, so that the press-in of the pin is facilitated.

  Further, in this case, the leg portion of the first fixing portion can be formed so as to continue from the protruding portion in the insertion direction, and the slit between the leg portions is also formed as a gap continuing from the space in the groove portion. be able to. Thereby, since a shape becomes simple, manufacture becomes easy. In particular, when the first hole and the leg are formed using a mold, the shape can be easily removed.

  The pin can be formed to have a shaft portion that is inserted through the through hole and a head portion that is provided at one end portion of the shaft portion and has a diameter larger than that of the shaft portion. And when inserting through the through holes of both the sensor holding body and the sensor, it is configured to be pushed in until the end surface on the insertion direction side of the head comes into contact with the end surface on the opposite side of the insertion direction of the first fixing portion. it can. Thereby, since the pin has a head, positioning at the time of insertion is possible, and the pin can be prevented from being pushed too much. Furthermore, the end surface on the insertion direction side of the head that is pushed in until it comes into contact with the end surface on the opposite side in the insertion direction of the first fixing portion can be configured to close the opening on the opposite side in the insertion direction that forms the first hole. If the head of the pin is formed wide enough to close the opening forming the first hole, the inserted pin is stably held with respect to the first member.

  By the way, in the present invention, when the pin is inserted into the first hole and the second hole in the intermediate portion located between the base portion and the distal end of the leg portion, the insertion direction of the pin is in contact with the distal end surface of the pin. An inner bulge portion that is bulged on the insertion axis side so as to come into contact can be formed. According to this configuration, when the pin is inserted, it comes into contact with the inner bulged portion of each leg, but by further pushing in, the leg can be elastically deformed outward. It becomes possible to fix the holding body and the sensor.

  Further, in this case, when the pin is inserted into the first hole or the second hole, either or both of the pin insertion direction front end surface and the pin contact surface of the inner bulging portion that contacts the insertion direction front end surface. In addition, as the pin pushes the inner bulging portion in the insertion direction, it is possible to form a surface shape that applies a radially outward component force that separates the inner bulging portion from the insertion axis. More specifically, at least the surface area that contacts the inner bulging portion of the tip end surface in the insertion direction of the pin can be a slope that decreases in diameter toward the insertion direction, and the pin contact of the inner bulging portion can be reduced. The contact surface may be a slope that decreases in diameter in the insertion direction, or a slope may be provided not only on one side but also on both sides. For example, the tip surface of the pin can be a hemispherical surface. Thus, as the surface shape is simpler, an advantage that the manufacture of each member becomes easier is obtained.

  By the way, in this invention, it protrudes toward the said inserted pin in the space | interval part which is spaced apart from an insertion axis line and spreads outward with the insertion to the 1st hole and 2nd hole of a pin in a leg part. While the engaging claw portion is formed, an engaging groove portion that engages with the engaging claw portion with the insertion can be formed on the outer peripheral surface of the pin. Thereby, when the engaging claw part of the leg part engages with the engaging groove part of the pin, it is possible to prevent the pin from coming off in the direction opposite to the insertion direction. In addition, what is necessary is just to make an engagement groove part non-formation in the area | region enclosed by the 1st hole of the said pin, when a pin is inserted in the 1st hole and the 2nd hole. The formation of unnecessary grooves can be omitted, the pin shape can be simplified, the manufacturing thereof can be facilitated, and in the configuration in which the pin is press-fitted into the first hole, the contact area with the press-fitted pin is increased. Therefore, the pin can be firmly press-fitted and held.

  Further, in this case, the engagement groove portion can be formed by a reduced diameter surface that decreases in diameter as it goes in the insertion direction, and a enlarged diameter surface that increases in diameter as it goes in the insertion direction from the minimum diameter position of the reduced diameter surface. . Thereby, when inserting a pin, since it becomes a shape which is easy to promote the elastic deformation which spreads outside with respect to the leg part which has an engaging claw part, pin insertion becomes easy.

  Further, the engaging claw portion can be formed on the inner bulged portion by utilizing the shape in which the inner bulged portion bulges toward the pin side. Thereby, compared with the case where the engaging claw part is formed separately from the inner bulging part, the leg part shape becomes simple and the manufacture becomes easy.

  In this case, the inner bulge portion where the engagement claw portion is formed has a pin contact surface that contacts the tip end surface of the pin on the insertion axis side, and a corner portion on the edge of the pin contact surface on the insertion axis side. In the form to form, it can form as a level | step-difference part which has a leg part front end side inner end surface following the insertion direction from the said pin contact surface, and can make a corner | angular part an engaging claw part. According to this configuration, the inner bulging portion is formed by the inner end surface on the side toward the base of the leg portion (end surface on the insertion axis side) and the inner end surface on the side toward the tip of the leg portion (end surface on the insertion axis line side). A step portion is formed between the corner portions, and the corner portion can be used as an engaging claw portion as it is.

  In this case, the distal end surface of the pin in the insertion direction of the pin is radially outwardly separated from the insertion axis with respect to the inner bulging portion as the pin pushes the inner bulging portion in the insertion direction when the pin is inserted. By forming the surface shape to apply a component force in the direction, the pin can be easily inserted.

  By the way, the 1st fixing | fixed part shall be formed integrally from the sleeve part which has a 1st hole and a leg part, and the sleeve fixing | fixed part which has a fitting hole which fixes the said sleeve part in the form which fits. be able to. In this case, even if there are various shapes of the first fixing portion, if the shape of the sleeve portion is standardized and determined, the sleeve in which the sleeve portion can be fitted into the first fixing portion. Even the fixed part may be formed. Thereby, it is not necessary to form sleeve portions of various shapes according to the shape type of the first fixed portion.

  The sleeve portion can also be formed of a material having a higher tensile strength than the sleeve fixing portion. Thereby, only the sleeve part which has a leg part used on the assumption of elastic deformation can be formed as a highly resistant material suitable for elastic deformation.

  Further, the first fixing portion can be a two-color molded product including a sleeve portion and a sleeve fixing portion made of a material different from that of the sleeve portion. The sleeve portion and the sleeve fixing portion made of different materials can be molded at the same time, and an advantage is obtained from the viewpoint of manufacturing efficiency.

  Further, the sleeve portion can be formed as a metal material, and the leg portion may be formed as a metal plate material. Thereby, formation of a leg part becomes easy.

  Further, the first fixing portion can be a fixing portion provided in the sensor, and in this case, the first fixing portion can be integrally formed of the same material as the main material of the sensor. In general, since the sensor is formed by molding the detection body with resin, the first fixing portion is also formed as a resin injection molded body integrated with the resin mold portion, so that the production efficiency can be improved. Can be increased.

  By the way, the rolling bearing device with a sensor according to the present invention includes an outer ring that is non-rotatably mounted on the vehicle body side, an inner ring that is concentrically arranged with respect to the outer ring and is mounted on the wheel side, and a circumferential direction between the inner ring and the outer ring. A plurality of rolling elements arranged on the inner ring, a magnetic body fixed to the inner ring and having magnetic characteristics alternately changed in the circumferential direction (magnetic encoder section), and a magnetic body so as to detect a magnetic change due to rotation of the magnetic body, A rolling bearing device with a sensor provided with an ABS sensor arranged to face each other can be provided. In this case, the non-rotating wheel is the outer ring, the rotating wheel is the inner ring, the sensor is the ABS sensor, and the ABS sensor is fixed to the sensor holder.

  In such a configuration, there is a problem that foreign matter wound up from the road surface while the vehicle travels adheres a magnetic body (magnetic encoder unit) to the surface and the rotational speed detection performance deteriorates. Furthermore, the intrusion of foreign matter into the rolling element arrangement gap also causes deterioration of the rotational performance of the bearing, and must be prevented. For this reason, it is necessary to prevent foreign matters from adhering to the encoder by blocking and protecting the encoder and the rolling element arrangement gap from the external space by some method.

  As a configuration for solving this problem, it is possible to employ a configuration in which the annular cover portion of the sensor holder is provided on the inner side of the outer ring so as to cover the inner side of the encoder. More specifically, the annular cover portion of the sensor holder is press-fitted and fitted to the inner peripheral surface or outer peripheral surface of the outer ring so that the fitting interface is sealed. Thereby, it becomes a structure which protects the vehicle inner side and radial direction outer side of an encoder and a rolling element arrangement | positioning space | gap. However, since the sensor holder attached to the outer ring forming the non-rotating ring cannot be tightly fixed to the inner ring forming the rotating ring, it is important to ensure the sealing performance of the annular cover member on the radially inner side.

  For this reason, the annular cover portion of the sensor holder is extended radially inward, and is fixed to the extended radially inner front end portion of the inner ring on the inner side of the vehicle inner side or on the inner side of the inner ring. An annular seal portion of the shaft member that is in sliding contact with the outer peripheral surface of the vehicle inner side than the inner ring can be fixed directly or via another member. Thereby, the vehicle inner side of the rolling element arrangement | positioning space | gap formed between an outer ring | wheel and an inner ring | wheel can be sealed by a cover part and a seal | sticker part. Thereby, the vehicle inner side of the encoder and the rolling element arrangement gap can be sealed by the cover portion and the seal member. In addition, the structure which provided the seal part which seals the said seal part on the vehicle inner side of the rolling element arrangement | positioning space | gap between an inner ring | wheel and an outer ring | wheel as a 2nd seal part as a 1st seal part may be sufficient. .

  Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. FIG. 1 is a sectional view of a mounted state of a rolling bearing device with a sensor according to the present invention, and FIG. 2 is a partially enlarged view of a rotation detecting device of the device. In FIG. 1, a sensor-equipped rolling bearing device 1 includes an outer ring 2a as a fixed ring, an inner ring 2b as a rotating ring, and rolling elements 2c arranged in a plurality of rows interposed between the inner ring 2b and the outer ring 2a. The rolling bearing 2 comprised from these is provided.

  The rolling bearing 2 is connected to an attachment port 3a of a vehicle fixing member 3 such as a knuckle or an axle housing on the vehicle inner side of a suspension device in the vehicle. In this connection, the outer ring 2a of the rolling bearing 2 is inserted and fitted into the mounting port 3a, and the flange 2d projecting outward from the outer ring 2a is connected to a vehicle fixing member via fasteners 2e such as bolts and nuts. 3 is fixed to the peripheral surface (vehicle outer side) of the mounting port 3a.

  The inner ring 2 b of the rolling bearing 2 is connected to the hub 4. The hub 4 has a hub bolt 4a for mounting a wheel (not shown) on the vehicle outer side. The hub 4 has a press-fit shaft portion 4b that is press-fitted into the inner ring 2b of the rolling bearing 2 and is fitted into the inner ring 2b, and the hub 4 is inserted into the inner ring 2b. It is provided so as to be rotatable together. The hub 4 is spline-coupled to the drive shaft 5, and one end side of the drive shaft 5 is passed through an insertion hole 4 c formed in the press-fit shaft portion 4 b of the hub 4, and a nut 6 is screwed to this end portion. Has been.

  A rotation detection device 7 for detecting a rotation change of the wheel is attached to the end portion of the rolling bearing 2 on the inner side of the vehicle. As shown in FIGS. 2 and 3, the rotation detection device 7 includes a sealing device portion 8 for sealing between the inner ring 2 b and the outer ring 2 a of the rolling bearing 2 from the outside, a magnetic encoder portion (magnetic body) 9, and A composite structure including an ABS sensor 10 for detecting a magnetic change due to rotation of the magnetic encoder unit 9 and a cover unit 11 for mounting the ABS sensor 10 is provided.

  As shown in FIGS. 2 and 3, the sealing device portion 8 of the rotation detecting device 7 seals the vehicle inner side of the rolling element arrangement gap C2 between the inner ring 2b and the outer ring 2a of the rolling bearing 2 from the outside. It has an annular inner case 8b fitted on the outer circumference of the inner ring 2b and an annular outer case 8a fitted on the inner circumference of the outer ring 2a, and is vulcanized and bonded to the outer case 8a. A seal member 8c made of a rubber-like elastic body that is slidably in contact with 8b is provided, and the inner case 8b and the outer case 8a are distributed and fitted to the outer ring 2a and the inner ring 2b.

  The inner case 8b extends inward in the axial direction Z of the inner ring 2b, and extends in the radial direction X outward from the end portion of the cylindrical part 8b1 that is press-fitted into the outer periphery of the inner ring 2b. The wall portion 8b2 provided is bent by a sheet metal material.

  The outer case 8a extends to the inner side (vehicle outer side) in the axial direction Z of the outer ring 2a, and is a tubular portion 8a1 that is press-fitted into the inner periphery, and is bent from the end portion of the outer case 8a. A cross section composed of a wall portion 8a2 extending inward in the X direction is formed of a substantially L-shaped sheet metal material.

  The seal member 8c, which is vulcanized and bonded to the outer case 8a and integrated, causes a part of the rubber-like elastic body to protrude outward in the axial direction Z or inward in the direction intersecting the axial direction Z. A lip portion 8c1 is provided. The lip portion 8c1 has an axial lip 8c2 whose tip is in sliding contact with the vehicle outer side wall surface of the wall portion 8b2 of the inner case 8b, and a radial lip 8c3 and 8c4 whose tip is in sliding contact with the outer peripheral surface of the cylindrical portion 8b1 of the inner case 8b. The inner case 8b and the lip portion 8c1 cooperate to exhibit a contact type sealing function.

  As shown in FIG. 3, the magnetic encoder unit 9 is formed in a disk shape, and magnetic poles (N pole and S pole) having different polarities are alternately arranged in the circumferential direction Y. And the magnetic encoder part 9 is being fixed to the radial direction X outer side of the inner ring | wheel 2b as a part of inner case 8b. Here, it is being fixed to the vehicle inner side wall surface of wall part 8b2 of the inner case 8b.

  As shown in FIGS. 2 and 5, a cover portion 11 for attaching an ABS sensor 10 that detects a magnetic change due to the rotation of the magnetic encoder portion 9 is press-fitted from the vehicle inner side of the outer ring 2 a to the outer periphery and is fitted. A cylindrical portion 11a, an annular standing wall portion 11b that is bent from the end of the cylindrical portion 11a and extends inward in the radial direction X, and an axial direction Z outward side (vehicle inner side) that is bent from the annular standing wall portion 11b. The continuous cylinder part 11c extending to the side) and the continuous wall part 11d bent from the continuous cylinder part 11c and extending inward in the radial direction X are bent by a sheet metal material. The annular standing wall portion 11b forms a contact surface 11b1 that is abutted against the vehicle inner side end surface 2a1 of the outer ring 2a, and functions as a portion that is positioned with respect to the axial direction Z when mounted on the outer ring 2a.

  In addition, since a gap C1 is formed between the continuous wall portion 11d of the cover portion 11 and the end portion of the rolling bearing 2, the accumulation is suppressed even if foreign matter is mixed in, and reliability for long-term use is ensured. Improves. Further, the cover portion 11 is formed with a drain hole 11f for discharging foreign matter that has entered the gap C1 at a position located below when the rolling bearing device with sensor 1 is assembled to a vehicle. In the radial direction X, the opening edge position on the outer side of the drain hole 11f is located outside the edge position of the inner peripheral surface of the inner ring 2b on the vehicle inner side, and is discharged from the drain hole 11f. The removal of foreign matter such as mud is improved.

  Further, as shown in FIG. 5, a notch is formed above the drain hole 11f in the cover part 11 in the radial direction X in order to mount the ABS sensor 10 across the continuous cylinder part 11c and the continuous wall part 11d. A sensor mounting hole 11e is provided. In addition, on both sides of the sensor mounting hole 11e in the circumferential direction Y, rail portions 11e1 are formed so as to protrude to the opposite side. This rail part 11e1 is a part fitted with the ABS sensor 10.

  As shown in FIG. 6, the ABS sensor 10 is a simple sensor in which a detection body (not shown) that detects a magnetic change due to rotation of the magnetic encoder unit 9 is packaged by a resin mold, and its cross-sectional shape is rectangular. A columnar sensor body 10a. The sensor body 10a is formed with a rail groove portion 10a1 for fitting with the rail portion 11e1 of the sensor attachment hole 11e in the cover portion 11 when the ABS sensor 10 is attached. The rail groove 10a1 is formed from the middle of the sensor body 10a to the tip side. The signal cable connected from the ABS sensor 10 to the ECU mounted on the vehicle is drawn out in the radial direction X.

  The ABS sensor 10 is fixed to the cover portion 11 via a bracket 12. As shown in FIG. 8, the bracket 12 is formed of a sheet metal material such that a pair of left and right stays 12b are continuously bent from both sides of a rectangular plate-shaped seat receiving plate (fixed portion) 12a. The stay 12b is formed with a hole 12b1 for fixing to the cover portion 11. On the other hand, holes 11d1 are also formed on both outer sides in the circumferential direction Y of the sensor mounting hole 11e in the continuous wall portion 11d of the cover portion 11 (see FIG. 5). The bracket 12 is fixed to the cover 11 by fastening the hole 12b1 of the bracket 12 and the hole 11d1 of the cover 11 with a fastener 12c such as a bolt / nut or a rivet (see FIG. 4). The bracket 12 and the cover portion 11 can be fixed by welding or the like. The structure in which the bracket 12 is fixed to the cover portion 11 functions as a sensor holding body 17 for fixing the sensor.

  The ABS sensor 10 is attached to the sensor holding body 17 by inserting the sensor body 10a of the ABS sensor 10 between the bracket 12 and the stay 12b so that the rail groove portion 10a1 and the rail portion 11e1 are fitted. 12 is integrated into the shape. When the rail portion 11e1 formed in the radial direction X and the rail groove portion 10a1 are fitted, the ABS sensor 10 is positioned, thereby restricting the movement of the ABS sensor 10 in the axial direction Z.

  On the other hand, the ABS sensor 10 is fixed to the sensor holder 17 with respect to the through holes 13a4 and 12a1 provided in both the fixing portion 16 of the ABS sensor 10 and the seat receiving plate (fixing portion) 12a. It is made in the form of inserting.

  The sensor body 10a of the ABS sensor 10 is integrally formed with a protrusion 10b for connecting to the seat receiving plate 12a of the bracket 12, and is disposed opposite to the seat receiving plate 12a. A through hole 10b1 penetrating in the radial direction X is formed in the protruding portion 10b (see FIG. 6). The through-hole 10b1 is a fitting hole for fixing the sleeve (sleeve portion) 13 in a manner to be fitted therein. And the through-hole 13a4 which penetrates to the radial direction X is formed also in the sleeve 13 fixed to this through-hole 10b1 (refer FIG. 6). The through hole 13a4 is a hole for inserting the pin 14 in order to fix the protrusion 10b of the ABS sensor 10 and the sleeve 13 fixed to the bracket 12. In the present embodiment, the through holes 13a4, 12a1, and 10b1 are each formed in a cylindrical shape or a substantially cylindrical shape, and are disposed in a form that has a concentric positional relationship. The fixing portion 16 is a structural portion in which the sleeve 13 is fixed to the protruding portion 10b.

  A through hole 12a1 is also formed in the seat receiving plate 12a (see FIG. 8). As shown in FIG. 9, the sleeve 13 integrally fixed to the protrusion 10b of the ABS sensor 10 and the seat receiving plate 12a are overlapped concentrically with each other so that the through holes 13a4 and 12a1 communicate with each other. Are arranged in surface contact. And in order to connect the protrusion part 10b and the seat receiving plate 12a which overlapped, the pin 14 is arrange | positioned in the through-hole 13a4, 12a1 of those both. In the present embodiment, the protrusion 10b and the sleeve 13 are overlapped with each other so that the radial direction X outer side and the seat receiving plate 12a are positioned on the radial direction X inner side, and the pin 14 is on the radial direction X outer side. The pin 14 can be easily inserted because it is inserted through the positioned through-hole toward the inner side in the radial direction X.

  6 and 7, the sleeve 13 includes a sleeve body 13a having a peripheral wall portion 13a5 that forms a through hole 13a4 and a peripheral wall portion 13a5 that forms the through hole 13a4 on the insertion direction P side of the pin 14. And a plurality of leg portions 13b (here, four) extending in the insertion direction P. These leg portions 13b are alternately formed in the circumferential direction of the peripheral wall portion 13a5 so as to sandwich the plurality of slits 13d, and the distal end side is an elastic deformation piece having a free end. These leg portions 13b are inserted into the through holes 12a1 of the seat receiving plate 12a, and further extend in the insertion direction P side from the through holes 12a1.

  Then, as shown in FIG. 9, these leg portions 13b are radially spaced apart from the insertion axis Q of the pin 14 when the pin 14 is inserted and pushed through the through holes 13a4 and 12a1. It causes elastic deformation to spread. A part of the outer end surface 13b3 facing the side opposite to the insertion axis Q side of each of the leg portions 13b spreading radially is inserted through the peripheral edge portion 12a2 of the through hole 12a1 on the insertion direction P side of the seat receiving plate 12a. Press toward the opposite side. By inserting and pushing the pin 14 so as to be in such a pressed state, the seat receiving plate 12a is located between the end surface 13a2 on the insertion direction P side of the sleeve body 13a and the outer end surface 13b3 of the leg portion 13b. The sleeve 13 and the seat receiving plate 12a are fixed. Thereby, the protrusion part 10b of the ABS sensor 10 and the seat receiving plate 12a are fixed.

  The pin 14 is provided at a shaft portion 14b inserted through the through holes 13a4 and 12a1 and an end portion on the opposite side of the shaft portion 14b in the insertion direction P, and has a head portion 14a having a larger diameter than the shaft portion 14b. Have And when inserting in through-hole 13a4, 12a1, it is comprised so that the end surface 14a1 of the insertion direction P side of the head 14a may be pushed in until it contacts the end surface 13a1 of the insertion direction opposite side of the sleeve 13. FIG. Thereby, the pin 14 can be positioned when the pin 14 is inserted, and the pin 14 can be prevented from being pushed too much.

  By fixing both the fixing portion 16 of the ABS sensor 10 and the seat receiving plate (fixing portion) 12a by inserting the pin 14 into the through holes 13a4 and 12a1, the ABS sensor is attached to the cover portion 11 via the bracket 12. 10 is fixed (see FIG. 4). That is, the ABS sensor 10 is fixed to the sensor holding body 17. Thereby, the movement of the ABS sensor 10 in the radial direction X and the circumferential direction Y is restricted by the pin 14. Coupled with the movement restriction of the ABS sensor 10 in the axial direction Z, the position and posture of the ABS sensor 10 are further stabilized. Therefore, it is suppressed that the position and posture of the ABS sensor 10 are shifted and an error is generated in the measurement value, and the reliability of the measurement value of the ABS sensor 10 is increased.

  Here, the fixing part 16 and the seat receiving plate 12a of the ABS sensor 10 in the present embodiment will be described in more detail.

  In the present embodiment, the outer peripheral surface 13a3 of the sleeve body 13a (that is, the through hole (fitting hole) 10b1 of the protrusion 10b) is formed to have a larger diameter than the through hole 12a1 of the seat receiving plate 12a. The sleeve 13 is disposed and fixed on the periphery of the through hole 12a1 of the seat receiving plate 12a having the small diameter through hole 12a1 so as to place the sleeve main body 13a, and the pin 14 is positioned in the insertion direction P. Has been made. That is, the end surface 13a2 on the insertion direction P side of the sleeve main body 13a is positioned in contact with the end surface 12a3 on the opposite side to the insertion direction P of the peripheral portion of the through hole 12a1 of the seat receiving plate 12a.

  Further, in the present embodiment, the ABS sensor 10 is an integral resin injection molded body in which the main part (resin mold part) and the protruding part 10b of the sensor body 10 are made of the same resin material. It consists of a resin or a metal material having a higher tensile strength than the resin material. In this embodiment, it is molded as a two-color molded product using these two resin materials. Specifically, the resin material of the main part of the sensor body 10 and the protrusion 10b is a thermoplastic resin (for example, nylon), and the resin material of the sleeve 13 is the same thermoplastic resin as that of the protrusion 10b. Further, it may be a resin material having a higher tensile strength, for example, PET, engineering plastic, phenol resin, or the like. The pin can be formed of, for example, PET, engineering plastic, phenol resin, or the like.

  Further, in the present embodiment, the leg 13b of the sleeve 13 has at least the outer end surface 13b3 in contact with the inner peripheral surface of the through hole 12a1 of the seat receiving plate 12a in the region surrounded by the through hole 12a1 of the seat receiving plate 12a. It is formed with such a size. As a result, as soon as the pin 14 is inserted and the elastic deformation as described above occurs, the leg portion 13b presses the seat receiving plate 12a in the direction opposite to the insertion direction P, and thereafter, the leg portion 13b is pushed in a certain amount or more. The pressure is gradually increased until the pressure is increased.

  Further, each leg portion 13b in the present embodiment is formed with an inner bulging portion 13c bulging inward toward the insertion axis Q side at an intermediate portion between the base portion and the distal end. When the pin 14 is inserted and pushed through the through-holes 13a4 and 12a1, the inner bulging portion 13c is formed so as to abut on the distal end surface 14d1 in the insertion direction P of the pin 14 in the insertion direction P. Has been. Thus, when the pins 14 are inserted, the pins 14 come into contact with the inner bulged portions 13c in the insertion direction P. However, when the pins 14 are further pushed in, the inner bulged portions 13c are directed outward. As a result, the front end side of the leg portion 13b is elastically deformed to move outward, and the ABS sensor 10 and the cover portion 11 can be fixed as described above.

  Further, the inner bulging portion 13c here is formed on a pin contact surface 14d1 that contacts the tip surface 14d of the pin 14 on the insertion axis Q side, and an inner end edge 13c5 on the insertion axis Q side of the pin contact surface 14d1. In the form of forming a corner portion, a step having an inner peripheral surface (inner end surface on the leg tip end side) 13c4 extending in the insertion direction P from the pin contact surface 14d1 is provided. And the engaging nail | claw part 13c5 is formed in this inner side bulging part 13c using the shape which this inner side bulging part 13c bulges to the pin 14 side. The engaging claw portion 13c5 is adapted to engage with an engaging groove portion 14c formed on the outer peripheral surface 14b1 of the pin 14 inserted through the through holes 13a4, 12a1, and the pin 14 is inserted in the insertion direction P. On the contrary, it plays a function to prevent it from falling out. The inner end surface 13b4 on the base side (the sleeve body 13a side) of the leg portion 13b is formed as a surface continuing from the through hole 13a4.

  On the other hand, the engaging groove portion 14c here has an annular diameter-reducing surface 14c1 that is reduced in diameter in the insertion direction P, and an annular diameter-enlarging surface 14c2 that is enlarged from the minimum diameter position of the diameter-reducing surface 14c1. The shape is made. Furthermore, the gradient with respect to the insertion axis Q of the enlarged diameter surface 14c2 is steeper than the gradient with respect to the insertion axis Q of the reduced diameter surface 14c1 (FIG. 9: α <β). In particular, in the present embodiment, the diameter-enlarged surface 14 c 2 is a plane that is perpendicular to the insertion axis Q of the pin 14. Thus, when the pin 14 is inserted, it is easy to insert the pin 14 and has a groove shape that facilitates elastic deformation spreading outward with respect to the leg portion 13b that contacts the engaging claw portion 13c5. . On the contrary, when the pins 14 are pulled out, if the leg portions 13b are further expanded, the pins 14 can be pulled out more easily than when they are pulled out by force.

  In addition, the engagement groove part 14c in this embodiment becomes non-formation in the area | region enclosed by the sleeve main body 13a (through-hole 13a4) of the said pin 14, when inserted in the through-holes 13a4 and 12a1 of the pin 14. FIG. Yes.

  In the present embodiment, the pin 14 is inserted into the through holes 13a4 and 12a1 on one or both of the tip end surface 14d in the insertion direction P of the pin 14 and the pin contact surface 13c1 of the inner bulging portion 13c. As the pin 14 pushes the inner bulging portion 13c in the insertion direction P, a surface shape that applies a radially outward component force that is separated from the insertion axis Q to the inner bulging portion 13c. Is formed. For example, at least a surface area of the tip surface 14d1 of the pin 14 that comes into contact with the inner bulging portion 13c can be an inclined surface that is reduced in diameter toward the insertion direction, and the pin abutting surface of the inner bulging portion 13c. 13c1 may be a slope that decreases in diameter in the insertion direction P, or such slope may be provided not only on one of them but also on both. In the present embodiment, the tip end surface 14d1 of the pin 14 is formed as a hemispherical surface, and a curved inclined surface is formed at least in a surface region in contact with the inner bulging portion 13c.

  Further, the pin 14 is inserted into the through hole 13a4 of the sleeve body 13a in a press-fit manner. In the sleeve 13 in the present embodiment, a plurality of groove portions 13a6 extending in the insertion direction P are formed in the peripheral wall portion 13a5 forming the through hole 13a4, and the peripheral wall portion 13a5 has a space between the adjacent groove portions 13a6. Has a ridge. And the pin 14 is penetrated in the form press-fitted in the center of these protrusion part 13a5. Thereby, the pin 14 to be inserted is firmly fixed by press-fitting. In addition, in this embodiment, as shown in FIG. 7, these leg parts 13b are formed in the form which continues in the insertion direction P from the protrusion part 13a5 of the sleeve main body 13a, and also between these leg parts 13b. The slit is also formed as a gap that continues from the space in the groove of the groove 13a6 of the sleeve body 13a. That is, the sleeve 13 forms an axial groove (groove 13a6) on the inner peripheral wall portion of the cylindrical structure having an annular cross section and a constant radial thickness, while forming the leg portion. The outer peripheral portion of the end portion is cut out, and the groove in that portion is also opened to the outer peripheral side to form a slit 13d.

  By the way, as shown in FIG. 2, a part of the outer peripheral surface 2a2 of the outer ring 2a into which the cylindrical portion 11a of the cover part 11 is press-fitted and fitted is formed with a diameter smaller than the outer diameter of the outer peripheral surface 2a2. A reduced-diameter step surface 2a3 is formed so that the tip end portion 11a1 of the cylindrical portion 11a does not protrude from the outer peripheral surface 2a2 of the outer ring 2a. Even if the cylindrical portion 11a is press-fitted to the reduced diameter step surface 2a3, the reference surface (outer peripheral surface 2a2) when the rolling bearing 2 is mounted to the mounting port 3a of the vehicle fixing member 3 is maintained. As a result, the outer peripheral surface 2a2 of the outer ring 2a can be used as a reference surface when connecting to the mounting port 3a of the vehicle fixing member 3, so that the mounting accuracy of the vehicle fixing member 3 to the mounting port 3a is improved.

  Further, as shown in FIG. 2, a spring portion 11a2 that presses and holds the reduced diameter step surface 2a3 of the outer ring 2a is provided on the cylindrical portion 11a that is press-fitted to the reduced diameter step surface 2a3 (outer peripheral surface 2a2) of the outer ring 2a. A plurality are provided at predetermined intervals in the circumferential direction. The spring portion 11a2 is formed so as not to protrude from the outer peripheral surface 2a2 of the outer ring 2a. The cover portion 11 is prevented from coming off by the spring portion 11a2.

  In addition, the cylindrical part 11a of the cover part 11 can also be press-fitted directly on the outer peripheral surface 2a2 without providing the reduced diameter step surface 2a3 on the outer peripheral surface 2a2 of the outer ring 2a. The cylindrical portion 11a of the cover portion 11 can be press-fitted to the inner peripheral surface of the outer ring 2a.

  On the other hand, in the present embodiment, the annular cover portion 11 of the sensor holder 16 is extended radially inward, and the radially inner tip end portion of the inner ring 2b is connected to the vehicle inner side end surface 2b1 or the inner ring 2b. An annular seal portion 18 slidably in contact with the outer peripheral surface 5a of the vehicle inner side of the inner ring 2b of the shaft member 5 (here, the drive shaft) fixed so as to be integrally rotatable inside is directly or via another member. It is configured to be fixed in shape. That is, the seal portion 18 and the vehicle inner side end surface 2b1 of the inner ring 2b to be slidably contacted or the outer peripheral surface of the shaft member 5 cooperate to exert a contact type sealing function.

  In the present embodiment, as shown in FIG. 10, the continuous wall portion 11 d extending inward in the radial direction X of the cover portion 11 has a radial direction X relative to the inner diameter side end surface 10 a 2 of the sensor body 10 a of the ABS sensor 10. It protrudes inward, and an annular seal member 18 is vulcanized and bonded to the inner diameter side tip. Furthermore, in order to increase the adhesive force, the seal member 18 extends over the three surfaces (tip surface and its adjacent surfaces) exposed at the tip portion so as to sandwich the tip portion on the inner diameter side of the continuous wall portion 11d. And vulcanized.

  Further, the seal member 18 in the present embodiment has a cylindrical shape extending inward in the axial direction Z (vehicle outer side), and the tip thereof is in the axial direction Z outward side of the inner ring 2b (vehicle inner side). ) Of the rubber-like elastic body that slidably contacts the end surface 2b1. And the inner diameter side tip of the continuous wall portion 11d of the cover portion 11 is bent and extended inward in the axial direction Z (vehicle outer side) so that the rubber elastic body 18 can be easily extended in the axial direction Z. The inner diameter side cylindrical portion 11h is formed, and the seal member 18 is bonded to the tip of the inner diameter side cylindrical portion 11h. Specifically, the rubber elastic body 18 is vulcanized with respect to the distal end surface 11h1 of the inner diameter side cylindrical portion 11h, the outer peripheral surface 11h2 on the outer side in the radial direction X, and the inner peripheral surface 11h3 on the inner side in the radial direction X. It is glued.

  As mentioned above, although embodiment of this invention was described, these are only illustrations to the last, and this invention is not limited to these, A various change is possible unless it deviates from the meaning of a claim. . Hereinafter, an embodiment different from the above embodiment will be described as the first embodiment. In addition, about the same structure, the description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  In the above-described embodiment, the protrusion 10b of the ABS sensor 10 is overlaid on the outer side in the radial direction X so that the seat receiving plate 12a of the sensor holding body 16 is positioned on the inner side in the radial direction X. The through hole located on the outer side in the radial direction X is inserted toward the inner side in the radial direction X, but the positional relationship between the two may be reversed. However, it is more desirable that the pin 14 is configured to be inserted toward the inner side in the radial direction X with respect to the through hole located on the outer side in the radial direction X. Is preferably provided on the seat receiving plate 12a. In addition, the sensor holding body 16 is not restricted to what is directly fixed with respect to a non-rotating wheel, You may be fixed to the member (for example, said vehicle fixing member) fixed with respect to a non-rotating wheel.

  In the above embodiment, the magnetic encoder unit 9 is arranged to face the sensor body 10 of the ABS sensor 10 in the axial direction Z (specifically, the detection body included in the sensor body 10). In a space where the cover portion 11 is covered with the outer side in the axial direction Z (the outer side of the vehicle) and the outer side in the radial direction X, and in the space where the outer side in the axial direction Z (the outer side of the vehicle) is sealed by the seal member 18 In this case, it may be attached so as to be able to rotate integrally with the inner ring. For example, the sensor may be disposed so as to face the sensor main body 10 (detection body) in the radial direction X.

  In the above embodiment, as shown in FIG. 10, the seal member 18 is provided so as to be in sliding contact with the vehicle inner side end surface 2b1 of the inner ring 2b. However, as shown in FIG. 13, it is integrally rotated inside the inner ring 2b. The shaft member 5 (here, the drive shaft) that can be fixed may be provided so as to be in sliding contact with the outer peripheral surface 5a closer to the vehicle inner side than the inner ring 2b. In this case, the seal member 28 may be vulcanized and bonded directly to the inner diameter side tip portion of the continuous wall portion 11d extending inward in the radial direction X of the cover portion 11. On the other hand, a separate annular member 11i extending inward in the radial direction X may be attached in the same manner, and the seal member 28 may be bonded to the inner diameter side tip of the annular member 11i. Also in this case, for the purpose of enhancing the adhesive force, the distal end surface 11i1 at the inner diameter side distal end portion of the continuous wall portion 11d or the inner diameter side distal end portion of the separate annular member 11i, and the outer peripheral surface 11h3 on the outer side in the axial direction Z The rubber elastic body 28 can be vulcanized and bonded to the inner peripheral surface 11i2 on the inner side in the axial direction Z.

  Further, in the above embodiment, as shown in FIG. 10, the seal member 18 is directly vulcanized and bonded to the continuous wall portion 11d extending inward in the radial direction X of the cover portion 11, so that the vehicle inner of the inner ring 2b is secured. Although it is in sliding contact with the side end face 2b1, a separate annular member 11i is attached to the continuous wall portion 11d in the same manner as in FIG. 13, and the seal member 18 is fixed to the annular member 11i. Good. However, the annular member 11i in this case is desirably provided in a shape extending inward in the axial direction Z, like the inner diameter side cylindrical portion 11h in the above-described embodiment, and the tip extending inward in the axial direction Z The adhesive force is increased by adhering the seal member 18 to the part in the same manner as the inner diameter side cylinder part 11h of the above embodiment.

  In the above embodiment, the end surface 14a1 on the insertion direction side of the head portion 14a of the pin 14 is formed so as to close and cover the opening on the opposite side of the insertion direction P of the through hole 13a4. The opening on the opposite side of the insertion direction P of the through hole 10b1 of 10b may be closed and covered. In other words, the head portion 14a may be formed so as to abut against the insertion direction opposite side end surfaces 16a1 (13a1, 10b4) of both the sleeve 13 and the protruding portion 10b forming the fixing portion 16.

  Moreover, in the said embodiment, although the engaging groove part 14c is formed in the axial part 14b of the pin 14, the groove cross-sectional shape of the said engaging groove part 14c is not necessarily restricted to the shape of the said embodiment, For example, it is good also as groove cross-sectional shape like FIG. Further, if the pin 14 is sufficiently press-fitted and fixed, there may be an embodiment in which the engagement groove portion 14c is not formed as shown in FIG.

  Further, in the above embodiment, the radially outward component force that is separated from the insertion axis Q with respect to the inner bulging portion 13c of the leg portion 13b by the insertion of the pin 14 is applied to the distal end surface 14d1 of the shaft portion 14b of the pin 14. As shown in FIG. 9, a hemispherical surface shape is provided as a surface shape on which the pin 14 acts. Such a surface shape of the pin 14 is a surface region that abuts on at least the inner bulging portion 13c of the tip surface 14d1. (For example, reference numeral 14d2 in FIG. 12) may be used, and it is not necessary to form the entire front end surface.

  In the above embodiment, the leg portion 13b of the sleeve 13 is formed on the base side (the sleeve main body 13a side) so as to be in contact with the inner peripheral surface of the through hole 12a1 formed in the seat receiving plate 12a. However, a gap may be formed between the inner peripheral surface and the inner peripheral surface. Thereby, the elastic deformation spreading out of the leg portion 13b can be made gentle, and the life of the sleeve 13b can be extended.

  In the above embodiment, the sleeve 13, the main part (resin mold part) of the sensor body 10a, and the protruding part 10b are formed by two-color molding. However, the sleeve 13 and the protruding part 10b are separated. After both are formed, they may be fixed together by, for example, press fitting. Further, the sleeve 13 does not have to be made of a resin, and can be formed of a metal material. In this case, the leg portion 13b is formed as a metal plate material, so that the elastic deformation capability can be provided. Alternatively, the sleeve 13, the main part (resin mold part) of the sensor main body 10a, and the protruding part 10b may be formed as a resin injection molded body integrally formed of the same resin material.

Sectional drawing of the attachment state of the rolling bearing apparatus with a sensor which concerns on this invention. The partial expanded sectional view of the rotation detection apparatus of FIG. The partial exploded view of a sealing device part. The attachment state figure of an ABS sensor and a sensor holding body. The perspective view of the cover part of a sensor holding body. The perspective view of an ABS sensor, a sleeve, and a pin. The top view of a sleeve, a bottom view, and a center sectional view. The perspective view of a bracket. The partial expanded sectional view of the rolling bearing apparatus with a sensor which shows the state by which the projection part of the ABS sensor and the seat support plate of the sensor holding body were pin-fixed. Sectional drawing which shows arrangement | positioning of a sealing member. FIG. 10 is a partial enlarged cross-sectional view of a rolling bearing device with a sensor, showing a state in which a projection of an ABS sensor and a seat receiving plate of a sensor holder are pin-fixed in a form different from FIG. FIG. 12 is a partially enlarged cross-sectional view of a rolling bearing device with a sensor showing a state in which a projection of an ABS sensor and a seat receiving plate of a sensor holding body are pin-fixed in a form different from FIGS. Sectional drawing which shows arrangement | positioning of the sealing member different from FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rolling bearing apparatus with a sensor 2 Rolling bearing 2a Outer ring 2b Inner ring 3 Vehicle fixing member 5 Drive shaft 5a Outer peripheral surface 8 Sealing device part 9 Magnetic encoder part (magnetic body)
DESCRIPTION OF SYMBOLS 10 ABS sensor 10a Sensor main body 10b Protrusion part 10b1 Through-hole 11 Cover part 12 Bracket 12a Seat receiving plate (fixing part)
12a1 Through hole 13 Sleeve 13a Sleeve body 13a4 Through hole 13b Leg portion 13c Inner bulging portion 13c5 Engaging claw portion 13d Slit 14 Pin 14c Engaging groove portion 16 Fixed portion 17 Sensor holder P Pin insertion direction Q Pin insertion axis

Claims (4)

Fixed on the non-rotating wheel side to detect the rotation change of the rotating wheel by detecting the magnetic material attached so that the magnetic field changes alternately along the circumferential direction of the rotating wheel and the magnetic field of the magnetic material A sensor-equipped rolling bearing device comprising:
The sensor holding body is fixed to the non-rotating wheel side, and the sensor holding body has a fixing portion in which a through hole for fixing the sensor is formed. On the other hand, the sensor also has the sensor holding body. Having a fixing part formed with a through hole for fixing to the body,
The fixing portions of both the sensor holder and the sensor are arranged in contact with each other so that the through holes communicate with each other, and pass through both through holes in order to fix the both fixing portions. The pin is inserted,
Of the fixing parts of both the sensor holding body and the sensor, the first fixing part is disposed on the opposite side of the pin insertion direction, and the second fixing part is disposed on the pin insertion direction side. And when the through hole of the first fixing part is a first hole and the through hole of the second fixing part is a second hole, the first fixing part is on the insertion direction side. A plurality of leg portions extending in the insertion direction from the peripheral wall portion forming the first hole are provided so as to sandwich a plurality of slits in the circumferential direction of the peripheral wall portion, and the leg portions are provided to the second fixing portion. Through the second hole,
Further, the leg portions of the first fixing portion are elastically extended radially away from the insertion axis thereof as the pins are inserted through the first hole and the second hole. A part of the outer end face of each leg portion that has deformed and spread radially and faces the side opposite to the insertion axis side is a peripheral portion of the second hole on the insertion direction side of the second fixing portion. The second fixing portion is formed so as to be pressed to the opposite side in the insertion direction, and the second fixing portion is inserted into the insertion direction side end surface of the first fixing portion by being inserted into the pressing state. A rolling bearing device with a sensor, characterized in that it is sandwiched between the leg portion and the outer end face and is fixed to the first fixing portion.   A plurality of groove portions extending in the insertion direction are formed in the peripheral wall portion forming the first hole, the peripheral wall portion is formed as a protrusion between the adjacent groove portions, and the pin is The sensor-equipped rolling bearing device according to claim 1, wherein the rolling bearing device is inserted into the first hole formed on the projecting center side of the projecting portion.   The leg portion of the first fixing portion is formed in a shape that continues from the protruding portion in the insertion direction, and the slit between the leg portions is formed as a gap that continues from the space in the groove portion. The rolling bearing device with a sensor according to claim 2.   The pin is provided with a shaft portion inserted into the through hole and a head portion provided at one end of the shaft portion and having a larger diameter than the shaft portion, and the sensor holding When the body and the sensor are inserted through the through holes, the head is pushed in until the end surface on the insertion direction side of the head comes into contact with the end surface on the opposite side of the insertion direction of the first fixing portion. The rolling bearing device with a sensor according to any one of claims 1 to 3.

Images