Nabtesco Corporation

Acro Nainen Co., Ltd.

Wakayama Nainenki Co., Ltd.

Naoya Taniguchi

Yoshinori Takezawa

Satoshi Katsumoto

Shinpei Matsuo

Provided is a vehicle speed control device with respect to which the speed at which a centrifugal brake operates can be easily changed from the outside without disassembling the device. A brake drumis fixed to a vehicle body. A brake shoerotates around a rotary shaftof the wheel, and reduces the rotation speed of the wheelas a result of coming into contact with an inner circumferential side face of the brake drum. A springprevents contact between the brake drumand the brake shoewhen the rotation speed of the wheelis lower than or equal to a predetermined speed, and permits contact between the brake drumand the brake shoewhen the rotation speed of the wheelexceeds the predetermined speed. A position change mechanismis installed within the brake drum, and changes the position of an end of the springon one end side. A transmission mechanismtransmits a force that is input by an external operation to the position change mechanismand drives the position change mechanism.

Vehicle speed control device and vehicle equipped with vehicle speed control device

In an emergency brake mechanism of the present invention, a rotation input shaft is increased in rotation speed by a planetary set-up gear to centrifuge weights. Through the action of the centrifugal force of the weights, linings of the brake shoes are brought into press-contact with a fixed portion to reduce rotation of the rotation input shaft, such that a large braking power is produced for a compact emergency brake mechanism.

Growing community of inventors

Wakayama, Japan

Naoya Taniguchi