JP4300924B2 - Rolling bearing device - Google Patents

Description

  The present invention relates to a rolling bearing device.

An example of a conventional rolling bearing device is known in which a rolling element held by a cage is interposed between an inner ring and an outer ring, and sealing devices are provided on both sides of an array of a plurality of rolling elements ( For example, see Patent Document 1).
Japanese Patent Laid-Open No. 11-082526 (page 2-3, FIG. 1)

  By the way, in such a conventional rolling bearing device, marking and laser marking are performed on the end face of the outer ring and the outer surface of the sealing device, and the bearing name number and lot number are displayed.

  However, when product information such as bearing name number or lot number is displayed by marking or laser marking on the end face of the outer ring or the outer surface of the sealing device, special machinery is required for marking or laser marking. And since the process of constructing it is required, many man-hours were required.

  In addition, when checking the product information such as bearing number and lot number given by stamping or laser marking after the rolling bearing device has been incorporated in a device such as an automobile, the rolling bearing device is disassembled and stamped or lasered. It was necessary to expose the position of the marking and confirm it using the naked eye or a camera. For this reason, additional work such as disassembly is required, and the confirmation work is time-consuming, and simplification is desired.

  Furthermore, in order to manage the product information of the rolling bearing device in correspondence with the number, there are problems that the number of characters to be engraved or laser marked increases, so that there is a shortage of space and the number management becomes complicated.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a rolling bearing device that can read product information from the outside in a non-contact manner, thereby simplifying the management of the product. .

In order to achieve the above-described object, a rolling bearing device according to the present invention includes:
A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged to be relatively rotatable between the inner ring and the outer ring,
A sealing device that is formed in an annular shape, a base end portion of which is attached to the inner ring or the outer ring, and a tip end portion of which is disposed in a seal groove formed in the outer ring or the inner ring;
A wireless tag is disposed on at least an outer surface of the sealing device ;
The sealing device is formed by covering a cored bar with an elastic member, and after the wireless tag is fixed to the cored bar, the surface thereof is covered with a film obtained by vulcanizing and bonding an elastomer . .

  Here, examples of the wireless tag include a module incorporating a wireless communication IC and an antenna. There are two types of wireless tags: a type that only reads data and a type that can read and write data. An antenna is formed on the surface of a plastic sheet or the like with conductive ink or the like, and a wireless IC chip is provided there. Has been implemented. The wireless tag is attached using, for example, an epoxy adhesive.

In the rolling bearing device configured as described above, a wireless tag in which product information such as a bearing name number and a lot number is written is arranged on the outer surface of the sealing device. Therefore, the wireless tag can be accessed wirelessly from the outside without performing additional work such as engraving, laser marking, disassembly, etc., and lack of space or complicated number management, which is performed using a special mechanical device as in the past. Thus, product information such as the bearing name number and lot number can be confirmed instantaneously without contact. Therefore, the product management can be simplified by reading the product information from the outside without contact. In addition, since the wireless tag has a large writable information capacity, individual number management is possible, and traceability can be improved.
In addition, since the surface of the wireless tag is protected by a film obtained by vulcanizing and adhering elastomer, even if it is used in a device to which water or dust adheres, it will not be polluted by water or dust. Can withstand various uses.
Further, a bearing device according to the present invention is a rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements that are arranged so as to roll freely between the inner ring and the outer ring,
A sealing device that is formed in an annular shape, a base end portion of which is attached to the inner ring or the outer ring, and a tip end portion of which is disposed in a seal groove formed in the outer ring or the inner ring;
A wireless tag is disposed on at least an outer surface of the sealing device;
The wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof .

  The rolling bearing device of the present invention is characterized in that the wireless tag has an antenna arranged in a circumferential direction of the sealing device.

  Thus, since the antenna of the wireless tag is arranged in the circumferential direction of the sealing device, an antenna having a length corresponding to the frequency band used by the wireless tag can be arranged along the circumferential direction of the sealing device. desirable.

  Moreover, the rolling bearing device of the present invention is characterized in that a tip portion of the sealing device is disposed with a gap with respect to the seal groove.

  Thus, in a rolling bearing device in which a labyrinth is formed between the tip portion of the sealing device and the seal groove using a non-contact type sealing device called a seal in which the tip portion is arranged with a gap in the seal groove, By wirelessly accessing the RFID tag from the product, product information such as bearing name numbers and lot numbers can be confirmed in a non-contact manner, and product management can be simplified by reading the product information from the outside without contact. Can do.

  Further, the rolling bearing device of the present invention is characterized in that a lip disposed at a front end portion of the sealing device with a gap with respect to the seal groove is provided.

  In this way, in a rolling bearing device in which a labyrinth is formed between the lip of the sealing device and the seal groove using a non-contact type sealing device called a shield in which the lip is arranged with a gap in the seal groove, wirelessly from the outside. By wirelessly accessing the tag, product information such as bearing name number and lot number can be confirmed in a non-contact manner, and product management can be simplified by reading the product information from the outside without contact. .

  In the rolling bearing device of the present invention, the sealing device is formed by covering the cored bar with an elastic member, and after the wireless tag is fixed to the cored bar, the surface thereof is vulcanized and bonded with elastomer. It is characterized by being covered with.

  In this way, the surface of the wireless tag is protected by a film obtained by vulcanizing and bonding the elastomer, so even if it is used in a device to which water or dust adheres, it will not be polluted by water or dust. Can withstand long-term use.

In order to achieve the above-described object, the rolling bearing device according to the present invention includes:
A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
The inner ring and hub is characterized in that it is arranged wireless tag via a non-metal member on the outside of integrally formed, and a metal end cap is attached to the outer ring Rutotomoni the end cap.

  Also in this rolling bearing device, as described above, as a wireless tag, for example, a module incorporating a wireless communication IC and an antenna can be exemplified. There are two types of wireless tags: a type that only reads data and a type that can read and write data. An antenna is formed on the surface of a plastic sheet or the like with conductive ink or the like, and a wireless IC chip is provided there. Has been implemented. The wireless tag is attached using, for example, an epoxy adhesive.

A rolling bearing device having a structure in which the inner ring and the hub are integrally formed and the end cap is attached to the outer ring is a hub unit bearing, and a product such as a bearing name number and a lot number of the hub unit bearing. Since the RFID tag with information written is placed on the end cap, additional work such as engraving, laser marking, and disassembly using a special machine as in the past, lack of space, and complicated number management By performing wireless access to the wireless tag from outside without performing the above, product information such as the bearing name number and lot number of the hub unit bearing can be instantaneously confirmed without contact. Therefore, the product management can be simplified by reading the product information from the outside without contact. In addition, since the wireless tag has a large writable information capacity, individual number management is possible, and traceability can be improved.
In order to achieve the above-described object, the rolling bearing device according to the present invention includes:
A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
The inner ring and the hub are integrally formed, and an end cap is attached to the outer ring, and a wireless tag is disposed on the end cap,
The wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof.

  In the rolling bearing device of the present invention, the end cap is made of a synthetic resin.

In this way, since there is no absorption and reflection of radio waves by the end cap, without interfering with the reception status of radio waves of the wireless tag, Ru can be performed to read stable data.

  Moreover, the rolling bearing device of the present invention is characterized in that the wireless tag is disposed inside the end cap.

In this way, the wireless tag is not exposed to rain water, stepping stones, or the like, thereby improving the reliability of the wireless tag.
The rolling bearing device according to the present invention is characterized in that the wireless tag is embedded in the end cap by insert molding.
In order to achieve the above-described object, the rolling bearing device according to the present invention includes:
An inner ring, an outer ring, a plurality of rolling elements rollably disposed between the inner ring and the outer ring, is attached to the outer ring so as to cover an end portion of the outer ring, exposed to rainwater and flying stones A rolling bearing device comprising:
Member to eliminate exposure to the rain water or flying stones is an end cap made of synthetic resin,
A wireless tag is provided inside the end cap,
The wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof.
The rolling bearing device according to the present invention is characterized in that product information is written in the wireless tag.

  According to the present invention, the wireless tag in which product information such as the bearing name number and lot number is written is arranged on the outer surface of the rolling bearing device. Therefore, the wireless tag can be accessed wirelessly from the outside without performing additional work such as engraving, laser marking, disassembly, etc., and lack of space or complicated number management, which is performed using a special mechanical device as in the past. Thus, product information such as the bearing name number and lot number can be confirmed instantaneously without contact. Therefore, the product management can be simplified by reading the product information from the outside without contact. In addition, since the wireless tag has a large writable information capacity, individual number management is possible, and traceability can be improved.

  Hereinafter, a plurality of preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. First, a rolling bearing device (hereinafter referred to as “rolling bearing device” or simply “bearing device”) according to a first embodiment of the present invention will be described with reference to FIG.

FIG. 1A is a cross-sectional view showing a first embodiment of the rolling bearing device of the present invention, and FIG. 1B is a left side view of FIG.
A rolling bearing device 10 according to the first embodiment of the present invention shown in FIGS. 1A and 1B is freely rollable in the circumferential direction between an outer ring 11, an inner ring 12, and an outer ring 11 and an inner ring 12. A deep groove having a plurality of balls (that is, rolling elements) 13 disposed on the outer ring 11 and annular sealing devices 14 and 14 having an outer peripheral base end portion and an inner peripheral distal end portion fixed to the outer ring 11. It is a ball bearing.

  The sealing device 14 has an inner peripheral tip 16 that is disposed in a seal groove 15 formed on the outer peripheral surface of the end of the inner ring 12 via a gap. That is, the rolling bearing device 10 includes a non-contact type sealing device 14 that forms a labyrinth between the inner peripheral tip portion 16 and the seal groove 15. In the rolling bearing device 10, the wireless tag 17 is disposed on the outer surface of the sealing device 14.

  Now, the rolling bearing device 10 configured as described above will be described in more detail.

  The outer ring 11 has a housing (not shown) fitted on the outer peripheral surface of the outer ring. The outer ring 11 has an outer ring raceway surface 18 formed at the center of the inner peripheral surface of the outer ring, and concave sealing device fixing portions 19 are formed at both axial ends of the outer ring raceway surface 18.

  The inner ring 12 is fitted with a shaft (not shown) on the inner circumferential surface of the inner ring. The inner ring 12 has an inner ring raceway surface 20 formed at the center of the outer peripheral surface of the inner ring, and concave seal grooves 15 are formed at both ends in the axial direction of the inner ring raceway surface 20.

  As described above, the sealing device 14 is formed in an annular shape, and is disposed on both sides of the ball 13 in the axial direction. The sealing device 14 is formed by bending a metal cored bar 21, and the outer ring 11 is disposed on the outer peripheral base end side of the cored bar 21 (that is, the outer peripheral base end of the sealing device 14). It has a fixing portion 22 fitted to the sealing device fixing portion 19, and is disposed on the inner peripheral tip portion side of the cored bar 21 through a predetermined gap in the sealing groove 15 of the inner ring 12, 15 has an inner circumferential tip 16 that forms a labyrinth.

  The wireless tag 17 is a module including a wireless communication IC and an antenna. The wireless tag 17 includes, for example, a ROM type that only reads data and a RAM type that can read and write data. In this embodiment, the RAM type is a RAM type. Is used. In the wireless tag 17, an antenna 24 is formed by printing or the like with a conductive ink or the like on the surface of a plastic sheet or the like, and a main body 23 on which a wireless IC chip is mounted is attached to the antenna 24. And the wireless tag 17 is affixed on the outer surface of one sealing device 14 using an epoxy adhesive etc., for example.

  The antenna 24 has a length corresponding to the frequency band used by the wireless tag 17 and extends in a curved shape from the main body portion 23 along the circumferential direction of the core metal 21 of the sealing device 14. In order to improve moisture resistance, it is preferable to coat the surface of the main body portion 23 with a fluororesin or attach a sheet of fluororesin or polyester. The antenna 24 may be formed not only by printing but also by etching a flexible substrate to form an antenna portion. Furthermore, in order to improve the reliability of signals transmitted and received, it is preferable that the wireless tag 17, particularly the antenna 24, be disposed at a location where it is exposed to the outside when assembled in the apparatus.

Product information such as the bearing name number and lot number is written and stored in the wireless tag 17 before assembling to the apparatus, and product information such as assembling date and time is written when assembling to the apparatus. Then, product information such as a maintenance history is written during maintenance after a certain period of use. The wireless tag 17 is operated by electric power from radio waves from a separately prepared transceiver (not shown), and can wirelessly transmit the product information to the transceiver. Therefore, a large amount of the product information can be instantaneously read out in a non-contact manner outside the rolling bearing device 10.
In addition, when the ROM type wireless tag 17 is used, product information such as bearing name number and lot number is written and stored before assembling to the device. By writing the information, the product information can be read out in a non-contact manner outside the rolling bearing device 10. Of the product information, product information such as the bearing name number and lot number and product information such as the assembly date and time may be written at the time of incorporation into the apparatus (after incorporation). Further, as the product information, lot numbers assigned to all products in a day may be written in the manufacturing process. Then, lot management can be performed easily.

  Since the wireless tag 17 is assembled together with the sealing device 14 being attached to the outer ring 11, the wireless tag 17 is attached without increasing the number of steps. Then, the product information can be confirmed instantaneously in a non-contact manner by performing wireless access from the outside by the transceiver. Further, since the wireless tag 17 has a large writable information capacity, individual number management is possible, and traceability can be improved.

  According to the bearing device 10 described above, the wireless tag 17 in which product information such as a bearing name number and a lot number is written is arranged on the outer surface of the sealing device 14. Therefore, since the wireless tag 17 is assembled together with the fixing portion 22 of the sealing device 14 being attached to the sealing device fixing portion 19 of the outer ring 11, the number of man-hours is not increased. Also, unlike conventional products, there is no marking or laser marking using special machinery, no additional work such as disassembly, and there is a lack of space and complicated number management. In addition, by wirelessly accessing the wireless tag 17 from the outside, product information such as the bearing name number and lot number can be instantaneously confirmed without contact. Thereby, management of a product can be simplified by reading product information from the outside without contact. Further, since the wireless tag 17 has a large writable information capacity, individual number management is possible, and traceability can be improved.

  Further, according to the bearing device 10, the antenna 24 of the wireless tag 17 is arranged in the circumferential direction of the sealing device 14. Therefore, it is desirable to arrange the antenna 24 having a length corresponding to the frequency band used by the wireless tag 17 along the circumferential direction of the sealing device 14.

  Further, according to the bearing device 10, a non-contact type sealing device 14 in which the inner peripheral tip 16 is disposed in the seal groove 15 with a gap is used. Accordingly, in the rolling bearing device 10 in which a labyrinth is formed between the inner peripheral tip 16 of the sealing device 14 and the seal groove 15, a product such as a bearing name number and a lot number is obtained by wirelessly accessing the wireless tag 17 from the outside. Information can be confirmed instantaneously without contact, and product management can be simplified by reading product information from outside without contact.

  Next, a second embodiment of the rolling bearing device of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view of an essential part showing a second embodiment of the rolling bearing device of the present invention. In addition, in each embodiment following 2nd Embodiment, about the member etc. which have the structure and effect | action similar to the already demonstrated member, description is simplified by attaching | subjecting the same code | symbol or an equivalent code | symbol in a figure, Omitted.

  As shown in FIG. 2, the rolling bearing device 30 according to the second embodiment of the present invention has a sealing device 31 in which a metal core 32 having a reinforcing function is made of rubber, synthetic resin, or the like. The main body 23 of the wireless tag 17 is fixed to the outer surface of the elastic member 33. And it has the holder | retainer (milling holder | retainer) 34 which hold | maintains the ball | bowl 13 so that rolling is possible.

  The sealing device 31 has a fixing portion 35 that is fitted to the sealing device fixing portion 19 of the outer ring 11 at the outer peripheral base end portion of the elastic member 33, and the inner ring 12 is fixed to the inner peripheral front end portion of the elastic member 33. The seal groove 15 has a lip 36 that is disposed through a predetermined gap and forms a labyrinth with the seal groove 15.

  According to the bearing device 30 described above, the non-contact type sealing device 31 in which the lip 36 is disposed in the seal groove 15 with a gap is used. Therefore, in the rolling bearing device 30 that forms a labyrinth between the lip 36 of the sealing device 31 and the seal groove 15, by wirelessly accessing the wireless tag 17 from the outside, product information such as the bearing name number and lot number is not displayed. It can be confirmed in an instant by contact, and product management can be simplified by reading product information from the outside without contact. When the wireless tag 17 is on the outer surface of the bearing device 30, the sealing device 31 may be a contact type seal.

  Next, a third embodiment of the rolling bearing device of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of an essential part showing a third embodiment of the rolling bearing device of the present invention.

  As shown in FIG. 3, in a rolling bearing device 40 according to a third embodiment of the present invention, a sealing device 41 is made of a metal core 42 having a reinforcing function, and is made of an elastic material such as rubber or synthetic resin. It is formed so as to be covered with a member 43. And it has the holder | retainer (milling holder) 44 which hold | maintains the ball | bowl 13 so that rolling is possible.

  The sealing device 41 has a fixing portion 45 fitted to the sealing device fixing portion 19 of the outer ring 11 at the outer peripheral base end portion of the elastic member 43. The seal groove 15 has a lip 46 that is disposed through a predetermined gap and forms a labyrinth with the seal groove 15.

  And after the main-body part 23 is fixed to the outer surface of the elastic member 43, the radio | wireless tag 17 is formed so that the surface may be covered with the film 47 which vulcanized-bonded the elastomer.

  According to the bearing device 40 described above, the non-contact type sealing device 41 in which the lip 46 is disposed in the seal groove 15 with a gap is used. Therefore, in the rolling bearing device 40 that forms a labyrinth between the lip 46 and the seal groove 15 of the sealing device 41, the product information such as the bearing name number and lot number is not obtained by wirelessly accessing the wireless tag 17 from the outside. It can be confirmed in an instant by contact, and product management can be simplified by reading product information from the outside without contact. Further, since the surface of the wireless tag 17 is protected by a film 47 obtained by vulcanizing and bonding an elastomer, even if it is used in an apparatus to which water or dust adheres, it is not soiled by water or dust. Can withstand long-term use.

  Next, a fourth embodiment of the rolling bearing device of the present invention will be described with reference to FIGS. 4 (a) and 4 (b). FIG. 4A is a cross-sectional view showing a fourth embodiment of the rolling bearing device of the present invention, and FIG. 4B is a side view of the end cap in FIG.

  As shown in FIGS. 4 (a) and 4 (b), a rolling bearing device 50 according to a fourth embodiment of the present invention is a third generation for a drive axle in an FF (front engine / front drive) type passenger car. This is applied to a hub unit bearing, and is arranged so as to be able to roll freely in the circumferential direction between the outer ring 51, the hub 52 having the first inner ring 53 and the second inner ring 54, and the outer ring 51 and the hub 52. A plurality of balls (that is, rolling elements) 54 and an end cap 55 attached to the end of the outer ring 51 are configured, and the wireless tag 17 is attached to the outer surface of the end cap 55.

  The outer ring 51 has first and second raceway surfaces 56 and 57 each having an arcuate cross section that opens outward in the axial direction on the inner peripheral side thereof. A flange 58 is formed on the outer peripheral side of the outer ring 51, and the rolling bearing device 50 is coupled to the knuckle arm (not shown) of the suspension device via the flange 58.

  A first inner ring 53 integrally connected to the hub 52 is disposed on the first raceway surface 56 side of the outer ring 51, and an inner side corresponding to the first raceway surface 56 of the outer ring 51 is disposed on the outer peripheral side of the first inner ring 53. A raceway surface 59 having an arcuate cross section opened in the direction is formed. Between the raceway surface 59 and the first raceway surface 56 of the first inner ring 53, a first ball row A including a plurality of balls 73 and a cage (not shown) is interposed.

  A second inner ring 54 is disposed on the second raceway surface 57 side of the outer ring 51, and an arcuate cross section opened inward corresponding to the second raceway surface 57 of the outer ring 51 on the outer peripheral side of the second inner ring 54. The raceway surface 60 is formed. Between the raceway surface 60 and the second raceway surface 54 of the second inner ring 54, a second ball row B including a plurality of balls 73 and a cage (not shown) is interposed. A shaft seal 61 that is an oil seal is disposed between the outer ring 51 and the hub 52.

  The second inner ring 54 is positioned in the axial direction by being externally fitted and press-fitted into a distal end cylindrical portion 62 formed at the distal end portion of the hub 52, and the nut 63 is screwed into the distal end cylindrical portion 62 to be integrated with the hub 52. Fixed.

  A tone wheel 64 is attached to the end of the second inner ring 54. The tone wheel 64 is formed in an annular shape, and in the circumferential direction of the annular portion 65, a window portion (not shown) and a pillar portion (not shown) are formed alternately at an equal pitch. .

  The end cap 55 is formed in an annular shape from a synthetic resin, and includes a disc portion 66 and a cylindrical portion 67. A speed sensor 68 is attached to the disc portion 66 in a non-contact manner at a position slightly away from the annular portion 65 corresponding to the annular portion 65 of the tone wheel 64. Nylon, polypropylene, PPS, or the like is applied as a resin material used to mold the end cap 55, but it is preferable to select it appropriately in consideration of oil resistance, water resistance, and heat resistance. Since the end cap 55 is molded by injection molding, it can be produced at a low cost and does not absorb or reflect radio waves, so that the reception state of the radio tag 17 is not adversely affected. Note that the end cap 55 may be made of metal regardless of the synthetic resin. In that case, iron, aluminum alloy, or the like is applied. However, when the end cap 55 is made of metal, it is desirable to take appropriate measures such as sandwiching a non-metallic member with the wireless tag 17 so that the reception state does not deteriorate.

  The speed sensor 68 generates a magnetic flux with respect to the annular portion 65 of the tone wheel 64, whereby the tone wheel 64 rotates together with the hub 52, and the magnetic flux of the window portion and the column portion in the annular portion 65 of the tone wheel 64 is rotated. A pulse-like rotation signal is generated depending on the magnitude of the flow. The rotation signal generated by the speed sensor 68 is given to a control circuit (not shown) through a lead wire or the like.

  The end cap 55 is assembled to the outer ring 51 by the cylindrical portion 67 being fitted into the end of the outer ring 51. At this time, a reinforcing member made of metal or the like may be fixed to the cylindrical portion 67. In that case, it is preferable to insert-mold the reinforcing member when the end cap 55 is molded.

  The wireless tag 17 is fixed to the outer peripheral side of the outer surface 66 </ b> A (outer side) of the disc portion 66 in the end cap 55. The antenna 24 is disposed along the circumferential direction of the outer side surface 66A of the end cap 55. At this time, the wireless tag 17 may be embedded by insert molding when the end cap 55 is resin-molded. In that case, it is preferable to prepare a core made of synthetic resin or metal in advance, attach the wireless tag 17 to the core, and then insert-mold the end cap 55, so that the position of the wireless tag 17 can be confirmed. . Note that it is more preferable that the core is made of synthetic resin because it does not absorb or reflect radio waves.

  According to the bearing device 50 described above, the first inner ring 53 and the second inner ring 54 are formed integrally with the hub 52, and the end cap 55 is attached to the outer ring 51, so that it can be used as a hub unit bearing or the like. . Then, product information such as the bearing name number and lot number of the hub unit bearing is written in the wireless tag 17.

  Therefore, the wireless tag can be accessed wirelessly from the outside without performing additional work such as engraving, laser marking, disassembly, etc., and lack of space or complicated number management, which is performed using a special mechanical device as in the past. Thus, product information such as the bearing name number and lot number of the hub unit bearing can be instantaneously confirmed without contact. Thereby, management of a product can be simplified by reading product information from the outside without contact. In addition, since the wireless tag has a large writable information capacity, individual number management is possible, and traceability can be improved.

  Further, according to the bearing device 50 described above, since the end cap 55 made of synthetic resin does not absorb or reflect radio waves, the radio tag 17 can stably read data without disturbing the radio wave reception state. be able to.

  Next, a fifth embodiment of the rolling bearing device of the present invention will be described with reference to FIGS. Fig.5 (a) is sectional drawing which shows 5th Embodiment of the rolling bearing apparatus of this invention, FIG.5 (b) is a side view of the end cap in Fig.5 (a).

  As shown in FIGS. 5A and 5B, the rolling bearing device 70 according to the fifth embodiment of the present invention is wirelessly provided on the inner side surface 66B (inner side) of the disc portion 66 in the end cap 55 made of synthetic resin. A tag 17 is attached.

  Since the wireless tag 17 is attached to the inner side surface 66B of the end cap 55, it is not exposed to the outside. However, since the end cap 55 is made of synthetic resin and does not absorb or reflect radio waves, the reception state (or transmission / reception state) of the wireless tag 17 is not adversely affected. Since the wireless tag 17 is attached to the inner surface of the end cap 55, the wireless tag 17 can be prevented from getting wet by rain water or being damaged by flying stones. The wireless tag 17 may be disposed on the inner side surface (inner side) of the cylindrical portion 67 of the end cap 55 instead of the inner side surface 66B of the disc portion 66 in the end cap 55.

  According to the bearing device 70 described above, the first inner ring 53 and the second inner ring 54 are formed integrally with the hub 52, and the end cap 55 is attached to the outer ring 51, so that it can be used as a hub unit bearing or the like. . Then, product information such as the bearing name number and lot number of the hub unit bearing is written in the wireless tag 17.

  Therefore, the wireless tag can be accessed wirelessly from the outside without performing additional work such as engraving, laser marking, disassembly, etc., and lack of space or complicated number management, which is performed using a special mechanical device as in the past. Thus, product information such as the bearing name number and lot number of the hub unit bearing can be instantaneously confirmed without contact. Thereby, management of a product can be simplified by reading product information from the outside without contact. In addition, since the wireless tag has a large writable information capacity, individual number management is possible, and traceability can be improved.

  Further, according to the bearing device 70 described above, even if the wireless tag 17 is arranged inside the end cap 55, the synthetic resin end cap 55 does not absorb or reflect radio waves. Stable data can be read without interfering with the reception state (or transmission / reception state), and it is not exposed to rainwater, stepping stones, etc., thereby improving the reliability of the wireless tag 17. it can.

  The present invention is not limited to the above-described embodiments, and modifications, improvements, etc. can be made as appropriate. In addition, the material, shape, dimension, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, the cross-sectional shape in the radial direction of the lip of the sealing device used in the rolling bearing device according to the present invention is not limited to the triangular shape shown in FIGS. 2 and 3, and the tip formed as described above is used. If it has, it can take various shapes.

  Moreover, the sealing device used for the rolling bearing device according to the present invention may be made of a synthetic resin for the core metal, or may be formed only by an elastic member without using the core metal.

  In addition, the rolling bearing device according to the present invention is not limited to the deep groove ball bearing described above, and any other rolling bearing device that requires or can be applied to a sealing device such as an angular ball bearing, various roller bearings, etc. It may be a bearing device.

  Further, the present invention is applied to all uses in which rolling bearings are used such as automobiles, railway vehicles, home electric appliances, video information equipment, conveyance devices, equipment machines, and the like. In particular, it is suitable for automotive applications that require traceability of rolling bearing devices.

  Further, the cage is not limited to the above-described milled cage, and various cages such as a punched cage and a crown-shaped cage may be used in accordance with the rolling bearing device.

  Further, a contact-type sealing device in which the lip is slidably contacted with the seal groove with a tightening margin may be applied.

  Further, temperature information and vibration information may be monitored by incorporating a temperature sensor, a vibration sensor, and the like in the wireless tag.

  The outer ring is provided with a seal groove, the inner ring is provided with a sealing device fixing portion, the fixing device of the sealing device is fitted into the sealing device fixing portion of the inner ring, and the main lip is slid onto the inner surface of the sealing groove of the outer ring. In this case, the present invention can be implemented in the same manner as the above-described embodiment.

(A) is sectional drawing which shows 1st Embodiment of the rolling bearing apparatus which concerns on this invention, (b) is a left view of (a). It is principal part sectional drawing which shows 2nd Embodiment of the rolling bearing apparatus which concerns on this invention. It is principal part sectional drawing which shows 3rd Embodiment of the rolling bearing apparatus which concerns on this invention. (A) is sectional drawing which shows 4th Embodiment of the rolling bearing apparatus of this invention, (b) is a side view of the end cap in (a). (A) is sectional drawing which shows 5th Embodiment of the rolling bearing apparatus of this invention, (b) is a side view of the end cap in (a).

Explanation of symbols

10, 30, 40, 50, 70 Rolling bearing device 11, 51 Outer ring 12 Inner ring 13, 73 Ball (rolling element)
DESCRIPTION OF SYMBOLS 14 Sealing device 15 Sealing groove 16 Tip part 17 Wireless tag 24 Antenna 32, 42 Core metal 33, 43 Elastic member 36, 46 Lip 47 Coating 52 Hub (inner ring)
55 End cap

Claims (12)

A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
A sealing device that is formed in an annular shape, a base end portion of which is attached to the inner ring or the outer ring, and a tip end portion of which is disposed in a seal groove formed in the outer ring or the inner ring;
A wireless tag is disposed on at least an outer surface of the sealing device;
The sealing device is formed by covering a cored bar with an elastic member, and after the wireless tag is fixed to the cored bar, the surface thereof is covered with a film obtained by vulcanizing and bonding an elastomer. Rolling bearing device. A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
A sealing device that is formed in an annular shape, a base end portion of which is attached to the inner ring or the outer ring, and a tip end portion of which is disposed in a seal groove formed in the outer ring or the inner ring;
A wireless tag is disposed on at least an outer surface of the sealing device;
A rolling bearing device, wherein the wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof.   The rolling bearing device according to claim 1, wherein the wireless tag has an antenna disposed in a circumferential direction of the sealing device.   The rolling bearing device according to claim 1, wherein a front end portion of the sealing device is disposed with a gap with respect to the seal groove.   The rolling bearing device according to claim 1, further comprising a lip disposed at a distal end portion of the sealing device with a gap with respect to the seal groove. A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
The rolling is characterized in that the inner ring and the hub are integrally formed, and a metal end cap is attached to the outer ring, and a wireless tag is disposed outside the end cap via a non-metallic member. Bearing device. A rolling bearing device having an inner ring, an outer ring, and a plurality of rolling elements arranged so as to be freely rollable between the inner ring and the outer ring,
The inner ring and the hub are integrally formed, and an end cap is attached to the outer ring, and a wireless tag is disposed on the end cap,
A rolling bearing device, wherein the wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof.   The rolling bearing device according to claim 7, wherein the end cap is made of a synthetic resin.   The rolling bearing device according to claim 7 or 8, wherein the wireless tag is disposed inside the end cap.   The rolling bearing device according to claim 7 or 8, wherein the wireless tag is embedded in the end cap by insert molding. An inner ring, an outer ring, a plurality of rolling elements rollably disposed between the inner ring and the outer ring, is attached to the outer ring so as to cover an end portion of the outer ring, exposed to rainwater and flying stones A rolling bearing device comprising:
Member to eliminate exposure to the rain water or flying stones is an end cap made of synthetic resin,
A wireless tag is provided inside the end cap,
A rolling bearing device, wherein the wireless tag includes a main body portion on which an IC chip is mounted, and the surface of the main body portion is moisture-proof.   The product information is written in the said radio | wireless tag, The rolling bearing apparatus as described in any one of Claims 1-11 characterized by the above-mentioned.

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