Browse Prior Art Database

Computer Printer Drive Shaft and

IP.com Disclosure Number: IPCOM000099137D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Campbell, JS: AUTHOR

Abstract

Disclosed is a tractor drive shaft and support for a computer printer carriage or other similar This drive shaft and bearings provides a snap-together design.

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Computer Printer Drive Shaft and

       Disclosed is a tractor drive shaft and support for a
computer printer carriage or other similar  This drive shaft and
bearings provides a snap-together design.

      As seen in Fig. 1, the ball bearing 3 has a molded inner race
1 and outer race 5.  Due to high-speed motion of the drive shaft 4 in
printers, it is necessary to the drive shaft to the inner bearing
race and the bearing race to the housing in which it is mounted.
invention accomplishes this by molding grooves 6 in the race 1 which
mate with grooves 7 in the drive shaft 4 by a key 2 molded in
the outer race 5 which mates with a in the housing 10 (as seen in
Fig. 3).

      As seen in Fig. 2, bearing 3 and bearing 11 are retained fixed
portions of housing 10 by snap fit fingers 12 and shaft 4 is
captivated between them.  This eliminates requirement to use c-
clips, journals, grooves, etc., drive shaft retention as in the prior
art.

      As seen in Fig. 2, the drive pulley or gear 13 is an part
of the inner race of ball bearing 11.  A motor pulley or gear 13
which, in turn, through the mating 6 and 7 in the bearing inner race
1 and drive shaft (see Fig. 1) transmit the drive motor torque to
drive 4.