초록 ▼

A collapsible stand includes a carrying member, a first support frame unit and a second support frame unit respectively pivotally connected to the carrying member, a linking unit pivotally connected between the first and second support frame units for allowing the collapsible stand to be alternative

A collapsible stand includes a carrying member, a first support frame unit and a second support frame unit respectively pivotally connected to the carrying member, a linking unit pivotally connected between the first and second support frame units for allowing the collapsible stand to be alternatively set between an extended position and a collapsed position, and a locking unit for locking the first and second support frame units to the carrying member selectively in the extended or collapsed position. The overall structure of the collapsible stand is simple and easy to operate. When set in the extended position, the first and second support frame units give a large area support to the carrying member, assuring high stability.

대표청구항 ▼

1. A collapsible stand, comprising: a carrying member comprising a first lateral portion and an opposing second lateral portion;a first support frame unit comprising a first pivot-connection portion pivotally connected to said carrying member adjacent to said first lateral portion, a first interlock

1. A collapsible stand, comprising: a carrying member comprising a first lateral portion and an opposing second lateral portion;a first support frame unit comprising a first pivot-connection portion pivotally connected to said carrying member adjacent to said first lateral portion, a first interlocking portion located at one side of said first pivot-connection portion, and a first end piece portion located at an opposite side of said first pivot-connection portion opposite to said first interlocking portion;a second support frame unit comprising a second pivot-connection portion pivotally connected to said carrying member adjacent to said second lateral portion, a second interlocking portion located at one side of said second pivot-connection portion, and a second end piece portion located at an opposite side of said second pivot-connection portion opposite to said second interlocking portion;a linking unit pivotally connected between said first interlocking portion of said first support frame unit and said second interlocking portion of said second support frame unit; anda locking unit mounted at one of said carrying member, said first support frame unit and said second support frame unit and adapted for locking said first support frame unit and said second support frame unit to said carrying member;wherein said first support frame unit is operable to move the collapsible stand between an extended position and a collapsed position; when operating said first support frame unit to move the collapsible stand from said collapsed position to said extended position, said linking unit is forced to move said second support frame unit away from said carrying member to said extended position where said first end piece portion and said second end piece portion are kept far away from each other and said locking unit is operable to lock said first support frame unit and said second support frame unit to said carrying member in said extended position;when operating said first support frame unit to move the collapsible stand from said extended position to said collapsed position, said linking unit is forced to move said second support frame unit toward said carrying member to said collapsed position where said first end piece portion and said second end piece portion are kept in proximity to each other and said locking unit is operable to lock said first support frame unit and said second support frame unit to said carrying member in said collapsed position. 2. The collapsible stand as claimed in claim 1, wherein said first support frame unit further comprises an engagement plate fixedly located at one side of said first pivot-connection portion, said engagement plate comprising a first retaining hole located at one side of said first pivot-connection portion and a second retaining hole located at an opposite side of said first pivot-connection portion opposite to said first retaining hole; said locking unit comprises a locking member movable relative to said carrying member, said locking member being insertable into said first retaining hole to lock the collapsible stand in said extended position, and insertable into said second retaining hole to lock the collapsible stand in said collapsed position. 3. The collapsible stand as claimed in claim 2, wherein said carrying member comprises a mount located at said first lateral portion, said mount comprising a bottom panel, two opposite side panels respectively vertically connected to two opposite lateral sides of said bottom panel and a lug connected to one said side panel, each said side panel comprising a pivot hole for the insertion of said locking member; said locking unit further comprises an operating bar pivotally connected to said lug and a spring member mounted on said locking member, said operating bar comprising a body portion pivotally connected to said lug of said mount, a connection end portion located at one end of said body portion and connectable to said locking member and an operating end portion located at an opposite end of said body portion opposite to said connection end portion, said spring member being disposed between said two side panels and comprising an elastic restoring end portion located at one end thereof and connected to said locking member and an abutment end portion located at an opposite end thereof opposite to said elastic restoring end portion and abutted against one said side panel, said spring member being adapted for providing an elastic restoring energy to move said locking member constantly toward said engagement plate. 4. The collapsible stand as claimed in claim 3, wherein said carrying member further comprises a handlebar connected to said first lateral portion; said operating end portion of said operating bar of said locking unit is disposed in proximity to said handlebar. 5. The collapsible stand as claimed in claim 1, wherein said first support frame unit comprises a pair of first frame bars respectively extended from said first pivot-connection portion to said first end piece portion, a cross bar connected between said two first frame bars and a pair of wheels respectively pivotally mounted at respective bottom ends of said first frame bars; said first pivot-connection portion comprises a pair of first pivot bolts respectively connected to respective opposing top ends of the first frame bars; said first interlocking portion comprises a pair of first interlocking bolts respectively located at the top ends of said first frame bars and respectively connected to said first pivot bolts of said first pivot-connection portion; said first end piece portion comprises a pair of first wheel axles disposed opposite to said first interlocking bolts at an opposite side relative to said first pivot bolts; said wheels are respectively pivotally mounted on said first wheel axles. 6. The collapsible stand as claimed in claim 5, wherein said second support frame unit further comprises a pair of second frame bars respectively extended from said second pivot-connection portion to said second end piece portion, a second cross bar connected between said second frame bars, and an inverted-U-shaped bottom frame bar connected between said second frame bars; said second pivot-connection portion comprises a pair of second pivot bolts respectively connected to said second frame bars; said second interlocking portion comprises a pair of second interlocking bolts respectively connected to said second pivot bolts of said second pivot-connection portion; said second end piece portion comprises a pair of connection end holes disposed opposite to said second interlocking bolts at an opposite side relative to said second pivot bolts; said bottom frame bar has two opposite ends thereof respectively connected to said connection end holes of said second end piece portion; said linking unit comprises a pair of links respectively pivotally connected between said first interlocking portion and said second interlocking portion, said links being respectively pivotally connected between said first interlocking bolts and said second interlocking bolts. 7. The collapsible stand as claimed in claim 5, wherein said first frame bars of said first support frame unit each comprise a stop block respectively disposed between said first pivot bolts and said first wheel axles, said stop blocks of said first support frame unit being respectively stopped at a bottom side of said first lateral portion when the collapsible stand is set in said extended position.