Tone wheel built-in constant velocity joint

• US 5,975,767 A
• Filed: 09/16/1998
• Issued: 11/02/1999
• Est. Priority Date: 09/16/1997
• Status: Expired due to Term

• Current Assignee: NSK Limited
• Original Assignee: NSK Limited
• Inventors: Mitsue, Naoki, Ouchi, Hideo, Mizukoshi, Yasumasa, Onose, Yoshiaki
• Primary Examiner(s): Graysay, Tamara L.
• Assistant Examiner(s): Stallman, Brandon C.
• Application Number:
  US09/154,448
• Time in Patent Office: 412 Days
• Field of Search: 384/544, 384/448, 324/207.25, 324/173, 324/174, 464/145, 464/139, 464/143, 464/906, 464/170, 464/173, 464/175, 301/105.1, 277/321, 277/634, 277/635, 277/636
• US Class Current: 384/544
• CPC Class Codes: B60B 27/0005 with ball bearings
• CPC Class Codes: B60B 27/0042 characterised by the fixation of the homokinetic joint to the hub
• CPC Class Codes: B60B 27/0094 one or more of the bearing races are formed by the hub
• CPC Class Codes: B60G 2204/115 Wheel hub bearing sensors
• CPC Class Codes: F16C 19/187 with all four raceways integrated on parts other than race rings, e.g. fourth generation hubs
• CPC Class Codes: F16C 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 41/007 Encoders, e.g. parts with a plurality of alternating magnetic poles
• CPC Class Codes: F16D 2003/22316 Means for fastening or attaching the bellows or gaiters
• CPC Class Codes: F16D 2003/22326 Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
• CPC Class Codes: F16D 3/223 the rolling members being guided in grooves in both coupling parts
• CPC Class Codes: G01P 3/443 mounted in bearings bearings F16C

Abstract

A rolling bearing unit has a hub which is formed with a housing for partly forming a constant velocity joint, wherein a connecting tube 20 of a magnetic metal plate is provided to have a base half portion 21 fitted onto the opening portion of the housing and a tip half portion 22 projecting from the housing, and a number of through holes 26 are formed in an axial portion of the base half portion and arranged circumferentially to function as a tone wheel.

Claims

1. A tone wheel built-in constant velocity joint comprising a housing having an open end portion and an inner peripheral surface formed with an axially long engagement groove or recess, a rotatable shaft inserted into the housing and having an outer peripheral surface, a rotation transmitting member provided between the outer peripheral surface of the rotatable shaft and the engagement groove or recess of the housing, a connecting tube having a base half portion fixedly fitted onto the opening end portion of the housing and a tip half portion projecting axially from the opening end portion, and a boot made of a resilient material and having one end portion fixedly fitted onto the tip half portion of the connecting tube, and the connecting tube being provided with a detected portion for a tone wheel having a circumferential property changing alternately with a uniform interval.

2. A tone wheel built-in constant velocity joint comprising a housing having an open end portion and an inner peripheral surface formed with an axially long engagement groove or recess, a rotatable shaft inserted into the housing and having an outer peripheral surface, a rotation transmitting member provided between the outer peripheral surface of the rotatable shaft and the engagement groove or recess of the housing, a connecting tube fixedly fitted onto the opening end portion of the housing and having first and second portions, and a boot made of a resilient material and having one end portion fixedly fitted onto the first portion of the connecting tube, the second portion of the connecting tube projecting from the boot to be provided with a detected portion for a tone wheel having a circumferential property changing alternately with a uniform interval.