Coupling device between left and right wheels of vehicle

A coupling device provided between left and right wheels of a vehicle comprising:

• a pair of differential gears each having first, second, and third rotational elements;
• and
• a pair of driving sources each being coupled to said first rotational element of each of said differential gears;
• wherein said second rotational element of each of said differential gears is respectively coupled to each of said left and right wheels;
• wherein said third rotational elements of both said differential gears are coupled to each other;
• wherein brake means which is capable of restricting the rotation of said third rotational element is provided;
• and
• wherein clutch means is provided which releases the coupling between the left and right wheels or the coupling between one of said differential gears and a corresponding one of said driving sources when a difference in rotation between the left and right wheels has exceeded a predetermined value.

A coupling device provided between left and right wheels of a vehicle comprising:

• a pair of differential gears each having first, second, and third rotational elements;
• and
• a pair of driving sources each being coupled to said first rotational element of each of said differential gears;
• wherein said second rotational element of each of said differential gears is respectively coupled to each of said left and right wheels;
• wherein said third rotational elements of both said differential gears are coupled to each other;
• wherein brake means which is capable of restricting the rotation of said third rotational element is provided;
• wherein each of said differential gears is constituted by a planetary gear type of transmission comprising a sun gear, a ring gear, and a carrier for supporting a planetary gear to be engaged with both said sun gear and said ring gear, in which said sun gear is used as said first rotational element, and said carrier is used as said second rotational element, and ring gear is used as said third rotational element;
• and
• clutch means is provided which releases the coupling between the left and right wheels or the coupling between one of said driving sources corresponding to at least one of both said differential gears when a rotational difference between the left and right wheels has exceeded a predetermined value.

A coupling device for installation between left and right wheels of a vehicle comprising:

• a pair of differential gears each having first, second, and third rotational elements;
• and
• a pair of driving sources each being coupled to said first rotational element of each of said differential gears;
• wherein said second rotational element of each of said differential gears is respectively coupled to each of said left and right wheels;
• wherein said third rotational elements of both said differential gears are coupled to each other;
• wherein brake means, which is capable of restricting the rotation of said third rotational element, is provided;
• wherein dimensions of each of said rotational elements of both said differential gears are, respectively, made equal to each other;
• and
• clutch means is provided which releases the coupling between the left and right wheels or the coupling between one of said differential gears and a corresponding one of said driving sources when a difference rotation between the left and right wheels has exceeded a predetermined value.

A coupling device for installation between left and right wheels of a vehicle comprising:

• a pair of differential gears each having first, second, and third rotational elements;
• a pair of driving sources each being coupled to said first rotational element of each of said differential gears;
• wherein said second rotational element of each of said differential gears is respectively coupled to each of said left and right wheels;
• wherein said third rotational elements of both said differential gears are coupled to each other;
• wherein brake means, which is capable of restricting the rotation of said third rotational element, is provided;
• wherein dimensions of each of said rotational elements of both said differential gears are, respectively, made equal to each other;
• wherein each of said differential gears is constituted by a planetary gear type of transmission comprising a sun gear, a ring gear, and a carrier for supporting a planetary gear to be engaged with both said sun gear and said ring gear;
• wherein said sung gear is used as said first rotational element, and said carrier is used as said second rotational element, and said ring gear is used as said third rotational elements;
• and
• clutch means is provided which releases the coupling between the left and right wheels or the coupling between one of said driving sources corresponding to at least one of both said differential gears when a rotational difference between the left and right wheels has exceeded a predetermined value.