Linkage device

Abstract

A linkage device includes a movable base, a linkage rod, and an auxiliary rod. The linkage rod has a first end and a second end, the first end being rotatably connected to the movable base. The auxiliary rod is fixed to the second end of the linkage rod. The movable base is adapted to move linearly along a first axis to drive the first end of the linkage rod to rotate along a second axis, while the second end of the linkage rod drives the auxiliary rod to move linearly along a third axis perpendicular to the second axis.

Claims

1. A linkage device, comprising: A movable seat; a linkage rod having a first end and a second end, the first end being rotatably connected to the movable seat; an auxiliary rod fixed to the second end of the linkage rod; a platform having two second slide rails spaced apart on opposite sides of the movable seat; and a carrier having two slide grooves movably fitted onto the two second slide rails, with the end of the auxiliary rod away from the linkage rod pivotally connected to the carrier, wherein the movable seat is adapted to move linearly along a first axis to drive the first end of the linkage rod to rotate along a second axis, while the second end of the linkage rod drives the auxiliary rod to move linearly along a third axis perpendicular to the first axis, wherein the two second slide rails are perpendicular to the movable seat and parallel to the third axis.

2. The linkage device as claimed in claim 1, wherein the movable seat is movably disposed on the platform and moves linearly relative to the platform along the first axis.

3. The linkage device as claimed in claim 2, wherein the platform has at least one first slide rail, the movable seat has at least one sliding sleeve, the at least one sliding sleeve being movably fitted onto the first slide rail, and the at least one first slide rail and the at least one sliding sleeve being parallel to the first axis.

4. The linkage device as claimed in claim 1, wherein each of the second slide rails has a stop plate corresponding to a blocking block in each of the slide grooves.

5. The linkage device as claimed in claim 1, wherein when the movable seat moves linearly along the first axis toward a first direction, it drives the linkage rod to unfold on the movable seat, and at the same time the linkage rod drives the auxiliary rod and the platform to move along the third axis toward a third direction, so as to be offset from the movable seat.

6. The linkage device as claimed in claim 5, wherein when the movable seat moves linearly along the first axis toward a second direction opposite to the first direction, the linkage rod overlaps with the movable seat, and at the same time the linkage rod drives the auxiliary rod and the platform to move along the two second slide rails toward a fourth direction opposite to the third direction to cover the movable seat.

7. The linkage device as claimed in claim 1, wherein the auxiliary rod and the linkage rod have an included angle.

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