Title:
ELECTROMAGNETIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/033149
Kind Code:
A1
Abstract:
In an electromagnetic brake device (1), an armature disk (5) is pressed against a fixed disk (7) through a friction disk (6) by a coil spring (9) so as to form the rotation restriction state of a rotary shaft (3) to which the friction disk (6) is attached for integral rotation. When an electromagnet (4) is energized, the armature disk (5) is attracted to release the friction disk (6), so that the rotary shaft (3) is switched to a rotation free state. At this time, the friction disk (6), which is disposed in the front and made of magnetic material, is also magnetically attracted through a through-hole (52) formed in the armature disk (5) and is pressed against the step surface (85) of a cylindrical hub (8), so that it is held in a position where it is out of contact with the two disks (5, 7). Thus, in the brake release state, there is no possibility of producing a defect, such as the friction disk (6) contacting the disks (5, 7) to produce noise or wear.
Inventors:
ITO EIKOH (JP)
HORI MASANORI (JP)
HORI MASANORI (JP)
Application Number:
PCT/JP2004/013908
Publication Date:
March 30, 2006
Filing Date:
September 24, 2004
Export Citation:
Assignee:
I T O CO LTD (JP)
KYOWASEIKO CO LTD (JP)
ITO EIKOH (JP)
HORI MASANORI (JP)
KYOWASEIKO CO LTD (JP)
ITO EIKOH (JP)
HORI MASANORI (JP)
International Classes:
F16D55/28; F16D65/21; (IPC1-7): F16D55/28; F16D65/21
Foreign References:
| JPS57164331U | 1982-10-16 | |||
| JPH0269139U | 1990-05-25 | |||
| JPH03209030A | 1991-09-12 | |||
| JPS337116Y1 | ||||
| JPS3414428Y1 | ||||
| JPS3720223Y1 |
Attorney, Agent or Firm:
Yokozawa, Shiro (Shimadachi Matsumoto-sh, Nagano 52, JP)
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