Delta Tooling Co., Ltd.

Delta Kogyo Co., Ltd.

Katsuhiro Inoue

Etsunori Fujita

Yumi Ogura

Seiji Kawasaki

Minoru Nakamura

Eiji Sugimoto

Ryuji Kuwano

Kiyonori Umezaki

Masahiro Kuromoto

Toshiya Kushiyama

Terumi Asai

Jun Fukuda

Seiya Yoshida

Atsushi Nishida

Hitoshi Fujita

Shuji Kasama

Hiroshi Danjo

Hiroki Nawamoto

Shinji Nishimoto

Katsutoshi Aratani

Koji Wakita

Provided is a slide device that can prevent rattling of a seat with a simple structure. A slide device includes a lock mechanism for fixing an upper rail to a lower rail. The lock mechanism includes a shaft attached to the upper rail, a lock tooth swingably supported by the shaft, and a wave washer that presses the lock tooth in an axial direction of the shaft. An outer circumferential face of the shaft has an outer tapered face slanted so that the shaft becomes thinner along a direction from a proximal end portion toward a distal end portion. An inner circumferential face of the shaft hole of the lock tooth has an inner tapered face having a slant angle that allows face-to-face contact with the outer tapered face. The wave washer presses the lock tooth in a direction in which the inner tapered face is pressed against the outer tapered face to make face-to-face contact.

Slide device

To provide a power seat slide device having improved effects of reducing abnormal sound, a temperature increase, and so on in gear mechanisms and so on. Gear mechanisms each include a case in which a worm and a worm wheel are rotatably supported, the cases are suspended from and supported by upper rails. The worms are connected to and supported by a rotational force transmission shaft of a drive mechanism, and the worm wheels are screwed to and supported by slide screws provided in lower rails. Further, the cases are supported on the lower rails via balls which are rolling members. This structure stabilizes a slide operation of the cases themselves and can further improve the effects of reducing abnormal sound and so on.

Power seat slide device

To reduce energy loss to increase power transmission efficiency, as well as to suppress unusual sound resulting from whirling vibration. A driving force transmission mechanism includes a drive unit that generates a rotation force and consists of a motor, as well as an independent rotating mechanism that is disposed between the drive unit and one of a pair of left and right gear mechanisms so as to be connected to the output shaft of the drive unit and has greater kinetic energy than the rotating parts of the gear mechanisms. Flexible shafts that rotate by smaller kinetic energy than any of the kinetic energy of the drive unit, the kinetic energy of the rotating mechanism, and the friction forces and damping forces of the rotating parts of the gear mechanisms connect between the drive unit and rotating mechanism, between the rotating mechanism and one gear mechanism, and between the drive unit and the other gear mechanism.

Power seat sliding device and vehicle seat

A torque transfer control mechanism that suppresses output-side displacement, and including a rotation control unit that maintains a locked state when an input torque rotating a transfer mechanism is not applied, and releases the locked state when the transfer mechanism rotates. The rotation control unit includes an internal gear and lock plates that include outer teeth that can engage with inner teeth of the internal gear. When an input torque is not applied, the inner teeth of the internal gear engage with the outer teeth of the lock plates, and when the transfer mechanism is rotated, engagement between the inner teeth and the outer teeth is released. Thus, even when torque is applied from the output unit side, engagement between the inner teeth and the outer teeth is not released by the torque.

Torque transfer control mechanism and seat structure

A seat slide adjuster suited to weight-saving has a structure in which two rows of engaged portions are provided at a predetermined interval in a direction orthogonal to a longitudinal direction of a locking plate that constitutes a locking mechanism, and the engaged portions engage with locking tooth parts on both sides of a lower rail during locking. Force that works between the locking plate and the lower rail acts on the locking tooth parts on both sides in a well-balanced manner and is not biased to either side. As a result, the durability of the components thereof can be improved. In addition, because two rows of hole portions in the locking plate engage, rattling of the locking plate is not likely to occur.

Seat slide adjuster

A seat support mechanism including a lifter, and configured to perform a cushion frame suspension function no matter to what height a cushion frame is adjusted. Torsion bars extending in the width direction of a cushion frame and elastically supporting the cushion frame are supported by a link mechanism disposed between sliders and the cushion frame. Even if the attitude of the link mechanism is displaced when the lifter adjusts the height, the positions of the torsion bars are displaced so as to follow the displacement. The torsion bars elastically support the cushion frame no matter to what height the torsion bars are displaced. Thus, no matter to what height the cushion frame is adjusted, the torsion bars are able to support the cushion frame with predetermined elasticity and to exhibit predetermined vibration absorption characteristics.

Seat support mechanism, seat structure and suspension seat

A structure in which two worm wheels are disposed across a worm provides an increase in locking reliability while maintaining stable operation during rotation. At the time of rotation, respective rotating fulcrums set at both end portions in an axial direction of a worm are supported by bearing parts. At the time of locking, a locking fulcrum set at an eccentric position on one end portion in the axial direction of the worm is supported by one bearing part, while on the other end portion in the axial direction, the rotating fulcrum is supported by the other bearing part as is. As a result, the angle of lead of the worm supported by the pair of bearing parts is changed between the time of rotation and the time of locking and becomes smaller at the time of locking than at the time of rotation, whereby an increase in locking reliability can be achieved.

Rotation movement control mechanism and seat

A rotating movement control mechanism including a worm, and a main driving side worm wheel and a driven side worm wheel disposed across the worm. Both end portions of the worm in an axial direction are axially supported by bearing parts. Respective teeth of the main driving side worm wheel and the driven side worm wheel contact both sides of the worm in a direction substantially orthogonal to the axial center with a backlash, and are supported thereby. When the second member is relatively rotated with respect to the first member, the worm rotates relatively with respect to the main driving side worm wheel. The driven side worm wheel rotates by a rotational force of the worm, and a rotational force of the driven side worm wheel is regenerated in the worm. Whirling vibrations of the worm are suppressed, and relative rotation is performed smoothly.

Rotating movement control mechanism and seat

A seat slide device includes lower rails and upper rails both formed substantially symmetrical bilaterally across a center in a width direction, and lock mechanisms on both sides of the upper rails to be engaged with the lower rails to lock them. An entire structure combining the lower rails, the upper rails and the lock mechanisms is substantially symmetrical forward, backward, and bilaterally, and a force applied to the lower rails and the upper rails can be absorbed substantially evenly forward, backward, and left and right. Since the lock mechanisms have an elastic lock member in a substantially center part in a longitudinal direction, the lower rails and the upper rails are elastically deformable for reduction of a biased load at a time of locking, improvement in vibration absorption characteristic, and the like, and a plate thickness of each material can be made thinner than conventional for weight reduction.

Seat slide device

A seat suitable for sports type automobiles with a low hip point. An energy absorbing structure part provided in a cushion frame is constituted of a substantially square frame body including a front beam and a rear beam, and stringers bridged across them and provided separately from side frames. It is structured such that belt anchor attaching members are each provided between a coupling position to a vicinity of a rear portion of upper rails of sliders and a coupling position of the rear beam in the stringers. When an impact force of a predetermined value or higher is applied, the stringers deform to absorb the impact force and trusses are formed after the deformation, thereby enabling to sustain a further impact force which continues to be applied.

Vehicle seat

A power seat slide device capable of changing not only to an electric operation but also to an manual operation, and preventing half-lock in spite of a manually operable structure. For front-rear movement, a rack attached to a lower rail and a pinion meshed with the rack are used, and a driving force of a motor is transmitted to the pinion, which enables the use in an electric mode. As no slide screw is used, while the motor is not energized, rotating the pinion causes an output shaft of the motor to rotate, so that manual adjustment becomes possible.

Power seat slide device and vehicle seat

A neck injury is improved with a structure having a lifting mechanism part only on one side. While a lifting driving part is provided on a side of one side frame, a coupling driving rod is coupled to a rotation center of a drive gear a driving link is disposed on a side of the other side frame, and the driving link is coupled to the coupling driving rod. A driving force in the lifting driving part operates on the side of one side frame having the drive gear, but on the side of the other side frame, the driving link rotates together with the drive gear via the coupling driving rod, so as to perform a lifting or lowering operation. The shape of a virtual square coupling contact points of the driving link, the side connectors, the coupling driving rod, and the drive gear does not collapse, and thus an external input is dispersed.

Lifter mechanism and vehicle seat

A predetermined component such as a recliner is attached to a long member in advance, and thereafter by bending the long member, a pair of side frames and an upper frame are integrally formed. Therefore, the recliner can be attached to the long member not bent yet and thus in a substantially flat state, and in addition, the pair of side frames and the upper frame can be integrally formed, which does not require labor and contributes to a reduction in manufacturing cost. Moreover, by adjusting a position where the bending is performed, it is possible to manufacture seat frame structures different in dimension even if the long members not bent yet have the same length, and from this viewpoint as well, it is possible to reduce labor and manufacturing cost.

Manufacturing method for seat frame structure

A vehicle seat suitable for weight reduction. A left and right side frames constituting a cushion frame unit are constituted of plate-shaped frames which are long in a forward and backward direction and formed of a thin material made of metal with a predetermined thickness or less, a plurality of beams are bridged across the side frames, and moreover, one or both of the side frames is or are supported on a seat slide device via a truss support part. In other words, the side frames disposed in a direction substantially orthogonal to the plurality of beams serve the role of stringers, and as a result, rigidity in the forward and backward direction of the side frames in particular is high rigidity of a predetermined value or more even if they are made of a thin material, and they can be reduced in weight.

Growing community of inventors

Hiroshima, Japan

Katsuhiro Inoue