US 5,030,181 AGranted

Arrangement of an electromagnet coupling gear

AssigneeZahnradfabrik Friedrichshafen AG

InventorWalter Keller

Life of this patent

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Abstract

The electromagnetic clutch that serves for positive-locking assembly of concentric transmission shafts is inserted in a transmission housing (2) concentrically in relation to a shaft (1) and with a bushing (10) which externally encloses it, there resulting outside the bushing (10), in the area of the annular magnet (16), a free space that reduces the leakage, and the sliding sleeve (18) and the armature plate (19) together with the magnet (16) and eventual additionally provided bearings (25) can be preassembled, ready for operation and protected against damage. On the outer end of the bushing (10) can be provided at the same time a roller bearing (25) for the clutch part (24) that carries the counter gear (22) on the other shaft. Due to the design that reduces the leakage and the arrangement in the area of a seal gap also existing in the transmission housing (2), it is possible to work with clutches of small dimensions and a transmission housing (2) of equal size can be used optionally with and without inserted clutches.

Claims17

Dependent claims

An arrangement of an electromagnet gear coupling

which has a bushing (10) inserted in a housing (2) with a flange (3),
said bushing having a ring magnet (16) preassembled therein for actuating an engaging gear (21) surrounding a shaft (1), and
a coupling wheel (24 and 28) with a counter gear (22) being situated adjacent said engaging gear (21), characterized in that
(a) said bushing (10) in addition to the ring magnet (16) is joined together with an axially movable sliding sleeve (18) supporting said engaging gear (21) adjacent one end thereof and carrying an armature disc (19) adjacent the opposite end of said sliding sleeve remote from the contact of the gears (21, 22) and thereby forms an operatively preassembled assembly,
(b) said assembly being inserted in said bushing (10) concentrically with said shaft (1) to be coupled in the area of a bearing (25) of said coupling wheel (24),
(c) and said engaging gear (21) being engageable, upon activation of said ring magnet (16), with said counter gear (22) mounted outside said bushing (10) on a hub (23) of said coupling wheel (24) which encloses said shaft (1).

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/411,481Filed 20 Sep 1989
Priority: DE 370940721 Mar 1987
Granted: 9 Jul 1991
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F16H 48/22
Arrangements for suppressing or influencing the differential action, e.g. locking devices: using friction clutches or brakes
B60K 17/20
Of differential gearing: in which the differential movement is limited
F16D 27/118
With an electromagnet not rotating with a clutching member, i.e. without collecting rings: with interengaging jaws or gear teeth
F16H 48/24
Arrangements for suppressing or influencing the differential action, e.g. locking devices: using positive clutches or brakes