This invention relates to a locking mechanism whereby the grip rod of a baby carriage, which interconnects the pair of push rods of the carriage and which is foldable at its middle, is locked in its straight state. More particularly, in a foldable baby carriage in which the distance between the push rods is increased or decreased when the baby carriage is opened or closed, it is necessary to inhibit the folding of the grip rod interconnecting the push rods when it is intended to firmly hold the baby carriage in an open, unfolded state. Thus, this invention is directed to a mechanism for locking the grip rod against being folded when the baby carriage is in its opened state.
Among typical examples of foldable baby carriages is one which has a pair of push rods constructed so that they are held relatively wide apart from each other when the baby carriage is in its opened state and relatively close to each other when it is in its closed state. In most cases, a grip rod is connected between such push rods. In baby carriages of the foldable type described above, such grip rod should be foldable, e.g., at its middle, so as to allow the movement of the pair of push rods toward and away from each other. The grip rod assumes a straight state when the baby carriage is in its opened state, so as to maintain the distance between the push rods at its maximum. To firmly maintain the opened state of the baby carriage, it is desirable that the foldable portion of the grip rod be locked in its straight state.