Honda Motor Co., Ltd.

Takehiko Hakui

Hajime Kajiwara

Kotaro Yamaguchi

Atsushi Yuta

Masanori Watanabe

Kunimichi Hatano

Yutaka Horiuchi

Yoshimitsu Akuta

Kiyoshi Nakajima

Koichi Suyama

Yasuhiro Terada

Yoshitomo Azekatsu

Hajime Hirata

Left and right actuators () for a vehicle are provided that include a first housing () and a second housing () connected in a direction of an axis (L), a coupling flange () of the first housing () and a coupling flange () of the second housing () being connected by a plurality of bolts () disposed at equal intervals on a circumference having the axis (L) as the center, and since a component mounting part via which a stroke sensor () is mounted on the second housing () is provided at an intermediate position between two bolts () of the plurality of bolts () or at a position of any one bolt (), the stroke sensors () of the left and right actuators () can be disposed at positions that are mirror-symmetric relative to a central plane (P) of a vehicle body while reducing the number of components by using in common for each of the left and right actuators () the second housing () on which the stroke sensor () is mounted.

Actuator for vehicle

A telescopic actuator includes a motor having a rotation shaft, a reduction gear which decelerates an output rotation of the rotation shaft, a feed screw mechanism having a male screw member and a female screw member which are relatively rotated by an output rotation of the reduction gear, a first housing accommodating the motor, and a second housing accommodating the reduction gear and the feed screw mechanism. The first housing and the second housing are detachably attached.

Telescopic actuator

A ring gear of a planetary reduction gear is screwed into an inner peripheral surface of a first housing through an opening thereof, while the thrust-receiving flange of a screw feed mechanism is held by the locknut screwed into an inner peripheral surface of a second housing through an opening thereof. In addition, the locknut and the ring gear face each other in an axial direction with a slight gap provided therebetween when the openings, respectively, of the first and second housings are connected to each other in the axial direction. Accordingly, even if the threaded connection of any one component of the locknut and the ring gear is loosened, the one component is prevented from moving by the other component.

A first rotor () and a second rotor () are arranged in a coaxial and mutually rotatable relationship and are provided with a first driven gear () and a second driven gear (), respectively. A drive shaft () is also provided with a first drive gear () and a second drive gear () which are commonly connected to an output shaft of an electric motor (), and mesh with the first and second driven gears, respectively, at slightly different gear ratios. The first and second rotors are connected via a thread feed mechanism () that converts a relative rotation between the first and second rotors into an axial linear movement between the first and second rotors that is used for changing a distance between a vehicle body part and a corresponding end of a suspension spring in a vehicle height adjusting system (). Owing to a differential rotation of a high gear ratio between the first and second rotors, a significant torque amplification is possible with a compact arrangement. The use of spur gears instead of a worm gear mechanism minimizes torque loss.

Vehicle height adjusting system

A telescopic actuator includes a motor, an input flange rotated by the motor, a male screw member coupled to the input flange, a female screw member threadedly engaged with the male screw member, an output rod coupled to the female screw member, the output rod being moved in an axial direction thereof to output a thrust force when the input flange is rotated, and a housing inside which the male screw member and the female screw member are accommodated. The input flange is supported by the housing such that a relative movement of the input flange with respect to the housing is allowed in a radial direction but restricted in the axial direction.

A telescopic actuator includes a housing, an output rod which is slidable in an axial direction with respect to the housing, at least two slide bearings via which the output rod is supported by the housing, and a stopper disposed between the two slide bearings. The stopper regulates a moving end position of the output rod.

A telescopic actuator is adapted to be used on a right side or a left side of a body. The telescopic actuator includes a housing having a cylindrical shape and formed with an opening portion, an output rod supported inside the housing so as to be protrudable and retractable with respect to the housing, and a stroke sensor comprising a detectable portion provided on the output rod so as to be movable inside the opening portion of the housing and a detecting portion provided on the housing so as to face the detectable portion. A direction in which the detectable portion is eccentrically disposed with respect to a vertical plane including an axial line of the output rod is different depending on whether the telescopic actuator is used on the right side or on the left side of the body.

A reduction gear includes a rotatable carrier, a ring gear rotatably fitted in an offset supporting hole in the carrier, and first and second sun gears having first and second outer teeth meshed with first and second inner teeth of the ring gear, respectively. The rotation of the carrier is reduced in speed and outputted as relative rotation of the first and second sun gears. Thus, it is possible to secure a large reduction ratio although in a small structure having a small number of components. Also, it is possible to change the reduction ratio by a slight design change of the number of teeth in one or both of the outer teeth of the first and second sun gears, thereby improving the versatility.

Reduction gear and vehicular active stabilizer system

A transmission actuator has a torque generating mechanism for generating a torque from a drive shaft, a speed reduction mechanism for multiplying a torque from the torque generating mechanism through a differential motion produced by a difference in gear ratio between a gearset of a first internally toothed gear and a first externally toothed gear and a gearset of a second internally toothed gear and a second externally toothed gear, a motion direction changing mechanism for converting the torque multiplied into a thrust and a friction engagement mechanism for transmitting power from an input shaft to an output shaft by virtue of the thrust so converted, wherein the drive shaft is made hollow so that the input shaft and the output shaft are disposed in a hollow portion of the drive shaft.

Growing community of inventors

Wako, Japan

Takehiko Hakui