Delta Tooling Co., Ltd.

Hiroki Honda

Etsunori Fujita

Yutaka Sakamoto

Yumi Ogura

Seiji Kawasaki

Yasuhide Takata

Kazuyoshi Chizuka

Hiroki Oshimo

Yoshimi Enoki

Hiroshi Nakahira

Hiroki Ohshimo

Reduces backlash and clearance in a thrust direction of a worm when engaging a seat back to more securely prevent the generation of abnormal noise that before. A movable bearingis pressed by camsthat are pressing members, when the seat back is stopped at a predetermined angle, to approach a worm wheel. A balldisposed in a recessof the movable bearingmoves slightly along an inner surface of the recessso a wormis pressed to the worm wheelside and pressed to the fixed bearingside, and a latch memberthat is a engaging member engages the wormto inhibit rotation of the worm wheelthereby securely holding that state. Since the movable bearingmoves to the worm wheelside, the substantial movement range of the ball is wider compared to a structure that supports a ball only at a fixed bearing, and the range of displacement of the wormby being pressed by the ball is substantially larger.

Reclining adjuster

A vibration damping apparatus using a magnetic circuit which is easier and less expensive to manufacture than conventional apparatus is provided. The apparatus comprises a moving member placed to move relatively away from and close to magnets and and made of a magnetic material which generates attraction force between the moving member and the magnets and , metal springs and as elastic members urging the moving member in a direction in which the moving member approaches the magnets and , and rubbers and as cushioning members mounted on predetermined positions to prevent the moving member from coming in contact with the magnets and . A negative spring constant is created by using an attracting magnetic circuit formed between the magnets and and the moving member , and to this, the elastic force of the metal springs and having a positive spring constant with the same value as the negative spring constant is added, whereby a total spring constant within a predetermined range of displacement can be set to substantially near zero by a very simple configuration.

Vibration damping apparatus using magnetic circuit

An automobile seat or recliner has a recliner adjuster for adjusting the inclination of a seat back relative to a seat cushion. The recliner adjuster is provided with a backlash reducing structure that includes a worm gear attached rotatably to the seat cushion, a sector gear fixed to the seat back and held in engagement with the worm gear, and a pressing member for pressing the sector gear to the worm gear to reduce backlash therebetween.

Backlash reducing structure for recliner adjuster

A vibration generating mechanism includes at least first and second permanent magnets spaced from each other with the same magnetic poles opposed to each other. The first permanent magnet is coupled to a link mechanism so that the drive force of a drive source may be transmitted to the first permanent magnet via the link mechanism. A periodic and reciprocating movement of the first permanent magnet relative to the second permanent magnet changes the opposing area thereof, causing vibration of the second permanent magnet.

Vibration generating mechanism using repulsive forces of permanent

A vibration mechanism having a magnetic spring includes a lower frame, an upper frame vertically movably mounted on the lower frame via a plurality of link mechanisms, and at least two permanent magnets mounted on the lower frame and the upper frame, respectively, with the same magnetic poles opposed to each other. A plurality of springs are connected to the link mechanisms to produce a lifting force of the upper frame. The total spring constant of the permanent magnets and the springs is partially set to a negative value or substantially zero.

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Hiroshima, Japan

Hiroki Honda