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A stroller includes two coupling units, each including a coupling member which has opposite first and second coupling portions and which is mounted on a seat supporting bar of a frame so as to be shiftable between a normal position where the first coupling portion faces upwardly, and an alternate po

A stroller includes two coupling units, each including a coupling member which has opposite first and second coupling portions and which is mounted on a seat supporting bar of a frame so as to be shiftable between a normal position where the first coupling portion faces upwardly, and an alternate position where the second coupling portion faces upwardly. The first and second coupling portions mate with an insertable portion of a seat member. The insertable portion is brought to engage the first coupling portion in the upright direction when the coupling member is in the normal position. The insertable portion is brought to engage the second coupling portion in the upright direction when the coupling member is in the alternate position. A locking member is disposed to releasably retain the coupling member in the normal or alternate position.

대표청구항 ▼

I claim: 1. A stroller comprising: front and rear wheels spaced apart from each other in a longitudinal direction; a seat member having two insertable portions which extend in a downward direction and which are spaced apart from each other in a transverse direction relative to the longitudinal dire

I claim: 1. A stroller comprising: front and rear wheels spaced apart from each other in a longitudinal direction; a seat member having two insertable portions which extend in a downward direction and which are spaced apart from each other in a transverse direction relative to the longitudinal direction; a frame including front and rear legs which extend downwards to terminate respectively at front and rear mounts that respectively support said front and rear wheels and that permit said front and rear wheels to be rotatable thereto, and two seat supporting bars which are disposed between said front and rear legs and which are spaced apart from each other in the transverse direction; and two coupling units, each including a coupling member which has first and second coupling portions that are opposite to each other, which is mounted on a respective one of said seat supporting bars, and which is shiftable relative to the respective one of said seat supporting bars between a normal position where said first coupling portion faces upwardly, and an alternate position where said second coupling portion faces upwardly, said first and second coupling portions being configured to mate with a respective one of said insertable portions such that the respective one of said insertable portions is brought to engage said first coupling portion in an upright direction when said coupling member is in the normal position, and such that the respective one of said insertable portions is brought to engage said second coupling portion in the upright direction when said coupling member is in the alternate position, and a locking member which is disposed to releasably retain said coupling member in one of the normal and alternate positions. 2. The stroller of claim 1, wherein said second coupling portion faces downwardly when said coupling member is in the normal position, said first coupling portion facing downwardly when said coupling member is in the alternate position. 3. The stroller of claim 2, wherein said coupling member is pivotably mounted on the respective one of said seat supporting bars about a pivot axis in the transverse direction so as to be turnable relative to the respective one of said seat supporting bars about the pivot axis between the normal position and the alternate position. 4. The stroller of claim 3, wherein said first and second coupling portions respectively have first and second end surfaces which are opposite to each other and which face in the upright direction when said coupling member is in the normal and alternate positions, each of said first and second coupling portions being in form of a socket which includes a socket slot that is formed in a respective one of said first and second end surfaces and that extends towards the other one of said first and second end surfaces, each of said insertable portions being in form of a plug which is configured to be inserted in the upright direction into said socket slot of a respective one of said first and second coupling portions. 5. The stroller of claim 4, wherein said plug has an engaging recess which is concaved in the transverse direction, said socket having two walls which extend from a respective one of said first and second end surfaces and which are spaced apart from each other in the transverse direction so as to define said socket slot therebetween, said socket slot being proximate to a respective one of said first and second end surfaces, one of said walls having a through hole which extends in the transverse direction to communicate with both of said socket slots, and a lever which has an engaging end that is disposed outwardly of said one of said walls and that extends through said through hole into the respective one of said socket slots so as to engage said engaging recess, thereby arresting movement of said plug relative to the respective one of said sockets once said plug is inserted into the respective one of said socket slots. 6. The stroller of claim 5, wherein said lever has an actuated end which is disposed outwardly of said one of said walls, and which is opposite to said engaging end, and a fulcrum disposed on said one of said walls and between said engaging and actuated ends, and a biasing member which is disposed to bias said engaging end into said engaging recess such that depression of said actuated end against biasing action of said biasing member releases said engaging end from said engaging recess. 7. The stroller of claim 5, wherein said socket slots extend to communicate with each other. 8. The stroller of claim 4, wherein a distance between said first end surface and the pivot axis is smaller than that between said second end surface and the pivot axis such that height of said first end surface relative to the respective one of said seat supporting bars when said coupling member is in the normal position is smaller than that of said second end surface when said coupling member is in the alternate position. 9. The stroller of claim 1, wherein said locking member of each of said coupling units includes a retaining shank which is disposed to be movable relative to a respective one of said seat supporting bars in the longitudinal direction and which has a retaining end extending toward said coupling member, and normal and alternate position retaining portions which are disposed on said coupling member and opposite to each other in the longitudinal direction and which have retained recesses that are configured such that when said coupling member is in the normal position, said retaining end is moved to engage said retained recess in said normal position retaining portion, and such that when said coupling member is in the alternate position, said retaining end is moved to engage said retained recess in said alternate position retaining portion. 10. The stroller of claim 9, wherein said locking member includes a biasing spring which is disposed to bias said retaining end of said retaining shank toward said retained recess in a respective one of said normal and alternate position retaining portions. 11. The stroller of claim 3, wherein said locking member of each of said coupling units includes a retaining shank which is disposed to be movable relative to a respective one of said seat supporting bars in the longitudinal direction and which has a retaining end extending toward said coupling member, and normal and alternate position retaining portions which are disposed on said coupling member and opposite to each other in the longitudinal direction and which have retained recesses that are configured such that when said coupling member is in the normal position, said retaining end is moved to engage said retained recess in said normal position retaining portion, and such that when said coupling member is in the alternate position, said retaining end is moved to engage said retained recess in said alternate position retaining portion. 12. The stroller of claim 11, wherein said normal and alternate position retaining portions are equi-distant from the pivot axis. 13. The stroller of claim 11, wherein said locking member includes a biasing spring which is disposed to bias said retaining end of said retaining shank toward said retained recess in a respective one of said normal and alternate position retaining portions.