JPS6127427Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a two-stage parking machine.

As shown in Figs. 1 and 2, this type of parking machine has a movable platform C attached to a base a via a pair of links b and b so as to be able to move up and down freely and form a parallel four-bar link. something is known.

However, this structure requires a stop mechanism to prevent movement at the upper limit.

Also, as shown in Figure 1, link b at the upper limit
If the position is less than 90 degrees, it will give a feeling of instability as if it is falling in the direction of the arrow, and if it is in a position where link b is 90 degrees at the upper limit as shown in Figure 2, it will give a feeling of instability as if it will fall to either side. I don't like it.

The present invention has been made in view of the above circumstances, and the purpose is to provide a two-stage parking machine that provides a sense of stability in its upper limit position and has a function to prevent it from falling over.

Embodiments of the present invention will be described below with reference to FIGS. 3 and 4.

The base 1 includes a fixed base 1a and a movable base 1b, the movable base 1b is expandable and retractable along the fixed base 1a, and a cylinder 2 is connected across the fixed base 1a and the movable base 1b.

Links 3 are pivotally connected to the fixed base 1a and the movable base 1b with pins 4, and each link 3 is connected to the movable base 5.
are pivotally connected to each other by pin 6, and each pin 4, 4,
6 and 6 are each node of a parallel four-bar link.

When the movable table 5 is swung upward by an elevating cylinder or the like to reach its upper limit, the cylinder 2 is extended and the movable base 1b is extended to assume a substantially trapezoidal upper limit posture.

In this way, the upper limit posture not only gives a sense of stability but also has a function to prevent falling.

The present invention is as described above, and if the movable base 1b is expanded and contracted by the telescopic cylinder 2, and the base 1, the movable base 5, and the pair of links 3, 3 are made into parallelogram shapes, the movable base 5 can be moved relative to the base 1. Since it can be raised and lowered, it becomes a two-stage parking machine.

In addition, since the movable base 1b is expanded and contracted by the telescopic cylinder 2, the base 1 is made longer than the movable base 5, and the entire body can be made into a substantially trapezoidal shape, so that the upper limit posture can be a posture that gives a sense of stability and prevents it from falling. Has a function.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of different conventional examples, and Figure 3
The figure is an explanatory diagram showing an embodiment of the present invention, and FIG. 4 is an explanatory diagram of its ascent limit posture. 1 is a base, 1a is a fixed base, 1b is a movable base,
3 is a link, 5 is a moving platform.

Claims (1)

[Scope of utility model registration request] A movable base 1b is extendable and retractable along the fixed base 1a, and a telescopic cylinder 2 is connected between the fixed base 1a and the movable base 1b to form a base 1, and the fixed base 1a and the movable base 1b have a pair of One end of the links 3, 3 is pivotally connected to each other by a pin 4 so as to be able to move up and down, and the other end of the pair of links 3, 3 is connected to both ends of the moving table 5 by a pin 6 so as to be able to move up and down. A two-stage parking machine characterized by a two-stage parking machine.