Coupling apparatus
AssigneeTochigi Fuji Sangyo Kabushiki Kaisha
InventorMasao Teraoka
Life of this patent
Estimating the term…
Abstract
The invention can reduce a number of parts, make an assembly and a part management easy and make a setting of an interval in an axial direction easy. A coupling apparatus is constructed by a lock ring which is rotationally engaged with a side gear corresponding to one of a differential case and a side gear capable of relatively rotating with each other by a coupling portion, is movable in an axial direction and has engagement teeth capable of engaging and interrupting with engagement teeth of the differential case on the basis of the axial movement, and an electromagnet which executes a movement in an axial direction of the lock ring on the basis of a line of magnetic force passing through the engagement teeth.
Claims13
A coupling apparatus applied to a differential unit including a differential case and a side gear arranged in the differential case, the differential case and side gear rotating relative to each other, the coupling apparatus comprising:
- a clutch member disposed between a side wall of the differential case and the side gear in an axial direction, the clutch member being rotationally engaged with the side gear through a coupling portion so as to rotate relative to the differential case integral with the side gear, and being movable in the axial direction;
- engagement portions integrally formed, one on the clutch member and another on the side wall of the differential case, the engagement portions engaging and interrupting with each other on the basis of the axial movement of the clutch member, thereby effecting locking and unlocking between the side gear and the differential case;
- and
- an electromagnet which executes the axial movement of the clutch member on the basis of a line of magnetic force passing through the engagement portions.
The coupling apparatus of clam 1, further comprising:
- a low magnetism member, inhibiting a short of the line of magnetic force, being provided in the differential case side, wherein
- the engagement portions transmit the rotational force without passing through the low magnetism member.
Dependencies are inferred from the claim text.