초록 ▼

In a grip bar for a collapsible baby carriage, first and second portions 4 and 5 are coupled with each other by a rigid link member 28 within a joint 6, so that the first and second portions 4 and 5 symmetrically operate with respect to the joint 6. Thus, angles formed by the respective first and se

In a grip bar for a collapsible baby carriage, first and second portions 4 and 5 are coupled with each other by a rigid link member 28 within a joint 6, so that the first and second portions 4 and 5 symmetrically operate with respect to the joint 6. Thus, angles formed by the respective first and second portions 4 and 5 relative to the joint 6 can be kept identical to each other, whereby locking members 23 and 24 for both of the first and second portions 4 and 5 can be reliably and concurrently engaged in open state locking concave portions 19 and 20 or closed state locking concave portions 21 and 22. In this manner, it is possible to reliably and easily attain a locking state of both of the first and second portions 4 and 5 in either a linear open state or a folded state.

대표청구항 ▼

[ I claim:] [1.] A grip bar for coupling a pair of push rods of a collapsible baby carriage with each others, having a central portion being rendered foldable, and being adapted to enter a linear state in an open state of the baby carriage and to enter a folded state in a closed state of the baby ca

[ I claim:] [1.] A grip bar for coupling a pair of push rods of a collapsible baby carriage with each others, having a central portion being rendered foldable, and being adapted to enter a linear state in an open state of the baby carriage and to enter a folded state in a closed state of the baby carriage, said grip bar comprising:a first portion forming one end portion;a second portion forming another end portion;a joint coupling said first and second portions respectively while rotatably supporting said first and second portions about first and second rotary shafts being parallel to each other respectively;open state locking concave portions and closed state locking concave portions being formed on respective single side surfaces of said first and second portions extending in directions intersecting with the axial directions of said first and second rotary shafts respectively;locking members being movable in the axial directions of said first and second rotary shafts so as to be engaged in said open state locking concave portions respectively by movements of said locking members when said grip bar is in said linear state, and so as to be engaged in said closed state locking concave portions respectively by movements of said locking members when said grip bar is in said folded state;springs urging said lockingmembers in directions for engaging said locking members selectively in said open state locking concave portions and said closed state locking concave portions;an unlocking member for supplying an operating force for disengaging said locking members from said open state locking concave portions and said closed state locking concave portions against said urging of said springs; anda rigid link member having one end rotatably mounted on a first position of said first portion around said first rotary shaft and another end rotatably mounted on a second position of said second portion around said second rotary shaft, wherein said second position around said second rotary shaft is in a positional relation opposite to the positional relation of said first position with respect to said first rotary shaft, for maintaining angles being formed by said first and second portions with respect to said joint identical in magnitude to each other;wherein an angle of a straight line connecting said second position with the axis of said second rotary shaft with respect to a straight line connecting the axis of said first rotary shaft with the axis of said second rotary shaft is negative .theta. and an angle of a straight line connecting said first position with the axis of said first rotary shaft with respect to the straight line connecting the axis of said first rotary shaft with the axis of said second rotary shaft is positive .theta..