A method for manufacturing a recliner heart may include supporting a guide plate of the recliner heart with a first support member, positioning a first block onto the guide plate opposite the first support member, positioning a second block in a recess of the guide plate, and applying a force to the first block. The second block may be disposed in the recess such that a gap is formed between the guide plate and the second block. A force may be applied to the first block such that material of the guide plate moves into the gap formed between the guide plate and the second block.

A vehicle drive apparatus, including an electric motor including a rotor rotating about a first axial line in a vertical direction and a stator disposed around the rotor, a first rotating shaft rotating integrally with the rotor and including a first gear at an end portion thereof, a pair of left and right second rotating shafts extended along second axial lines parallel to the first axial line and including second gears at end portions thereof so as to mesh with the first gear and worm gears rotating about the pair of left and right second axial lines, a pair of left and right worm wheels rotatable about a third axial line in a left-right direction and provided so as to mesh with the worm gears, and a pair of left and right drive shafts to which torques from the worm wheels are input.

A seat recliner for a vehicle includes parts which are respectively used in opposite sides of a seat and compatible with each other. The seat recliner includes: a first flange having guide parts, guide spaces, and a first through hole; a plurality of lock gears having a guide protrusion; a lock cam having a second through hole; a control part having a third through hole and a guide slit; and a shaft penetrating through the first through hole, the second through hole, and the third through hole so that the shaft rotates with the lock cam and the control part.

A method of producing a seat reclining apparatus includes connecting one of a first connecting portion and a second connecting portion of a biasing member to associated one of a base member and a lock drive member, with a lock member and the lock drive member supported on the base member, thereby bringing the biasing member to a temporarily held state; mounting the ratchet to the base member so as to cover the biasing member in the temporarily held state; and fixing the other of the first connecting portion and the second connecting portion to the other of the base member and the lock drive member through an opening which is formed in one of the base member and the ratchet, thereby bringing the biasing member to the biasing state from the temporarily held state.

A recliner for a vehicle seat is configured such that a plurality of stop protrusions is provided along an edge of a center hole formed in a control plate, and fore-end corners of the stop protrusions are stopped by the outer circumferential surface of a rod part of an input member when the rod part of the input member passes through the center hole of the control plate, whereby the coupling and assembly of the input member is performed by the stop protrusions of the control plate.

A locking device for a vehicle seat. The recliner includes a plate holder including a first catch protrusion on one of a plurality of guide blocks, a sector gear including an internal gear on an inner surface thereof, a plurality of pawl teeth each configured to be moved between a pair of the guide blocks, the pawl teeth including catch hooks on portions of inner surfaces thereof, an operation cam including a second catch protrusion protruding therefrom; and a return spring having a spiral shape, the return spring including a center inner end portion hooked and supported on the second catch protrusion and an outer end portion hooked and supported on the first catch protrusion, wherein a support protrusion protrudes from the operation cam to support the return spring while making point contact with a center inner surface of the return spring.

A reclining device for a vehicle seat includes a housing having one side opened to communicate with an interior of the housing, a clutch drum inserted into the housing, configured to be rotatable, and having one side directed toward the housing and opened to communicate with an interior of the clutch drum, a cam inserted into the clutch drum and configured to receive a rotational force from the outside of the housing and transmit the rotational force to the clutch drum, and a brake drum configured to receive the rotational force from the clutch drum and having a center to which a shaft is coupled, in which a plurality of coupling protrusions is provided on one surface of the cam directed toward the housing, and the coupling protrusions penetrate the other side of the housing and are inserted into coupling holes of a lever bracket.

A locking mechanism includes a housing, a cam disposed within the housing, and a plurality of pawls disposed within the housing. The housing includes a first plate and a second plate. The second plate includes a peripheral lip having an interior face that defines a plurality of teeth. Each of the plurality of pawls defines a central axis. Each of the plurality of pawls includes a plurality of pawl teeth. The plurality of pawl teeth include a first middle tooth positioned on a first side of the central axis and a second middle tooth positioned on an opposing second side of the central axis. The first middle tooth has a first flat face facing the central axis and a first curved face facing away from the central axis. The second middle tooth has a second flat face facing the central axis and a second curved face facing away from the central axis.

Proposed herein is a reclining apparatus for a seat, which secures coupling between a cap and a gear plate through a uniform position adjustment of the cap when the cap of a recliner is assembled, secures operation performance between components, and prevents a bearing from being deformed and separated due to an external force.

A seat recliner for a vehicle may include: a fixing flange provided with multiple guide parts spaced apart from each other and having a guide groove formed along a locus having a predetermined distance from a center axis; and a rotary cam mounted on a center portion of the fixing flange, rotating about the center axis to press a locking gear such that the locking gear slides along the guide parts. In particular, the rotary cam includes: a first protrusion formed on a mount surface of the rotary cam, which is coming into contact with the fixing flange when mounted; and a second protrusion formed on a surface opposite to the mount surface and capable of engaging with a control plate. When the first protrusion is inserted into the guide groove, the guide groove guides a rotation of the rotary cam.