JPH0350199Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] This invention is a two-stage parking device developed to make effective use of land. In order to switch between a car-receiving position in which the pallet is placed on the ground and a parking position in which the pallet is positioned above the height of the car, the pallet is raised and lowered while maintaining the former pallet in a horizontal position. The present invention relates to a two-stage parking device that is equipped with a four-link mechanism and a drive mechanism that drives and swings the four-parallel link mechanism.

[Conventional technology]

Conventionally, in this type of two-stage parking device, as shown in FIG. 4, the drive mechanism 5 includes a connecting frame 50 that connects the rear ends of the left and right fixed frames 2, 2. Left and right fixed frames 2, 2
A pulley 51 is attached to the upper part of the connecting frame 50, and one end of the pallet 3 is connected to the lower part of the connecting frame 50, and the other end of the wire 52 is suspended through the pulley 51. a winding winch 53 that winds up the
An electric motor 54 that drives this winding winch 53
Further, the electric motor 54 is provided with a negative brake (not shown) that is in a braking state when the electric motor is not energized.

Then, when the automobile C is driven into and stopped at a predetermined position on the pallet 3 in the car-receiving attitude, when the electric motor 54 is energized and driven,
At the same time that the negative brake provided on the electric motor 54 is automatically switched to a brake release state, the take-up winch 53 is driven to rotate. By the drive rotation of this winding winch 53, the wire 5
2 is wound up. By winding the wire 52, the pallet 3 is raised to the parking position. After that, when the electric motor 54 is stopped,
Along with this, the negative brake is automatically switched back to the braking state.

[Problem that the invention attempts to solve]

In the case of this conventional two-stage parking device, the negative brake is put into a braking state when the electric motor 54 stops, so that the pallet 3 on which the automobile C is placed does not fall accidentally. If the wire 52 breaks, the former pallet 3 may rapidly descend together with the vehicle C, potentially causing a serious accident.

Moreover, since the former pallet 3 is pulled upward via the wire 52, a tall connecting frame 50 is required, and the number of parts increases, resulting in the problem that the entire parking device becomes larger and more complex. It was hot.

An object of the present invention is to provide a useful two-stage parking device that can improve safety and reduce the size of the device.

[Means for solving problems]

In the two-stage parking device according to the present invention, the drive mechanism is configured such that one of the left and right fixed frames and the arm of the parallel quadruple link mechanism has a swing axis on the base end side of the arm. The electric motor is characterized in that a first gear at the center is fixed, and an electric motor is provided on the other side, which is equipped with a second gear that meshes with the first gear, and a negative brake that is in a braking state when not energized. Yes, and its effects and effects are as follows.

[Effect]

When a car is driven into a predetermined position on a pallet in a car-receiving position and stopped, when the electric motor is energized and driven, a negative brake provided on the electric motor is automatically switched to a brake release state. At the same time, the second gear is driven and rotated. Since the first gear that meshes with the second gear is fixed coaxially with the swing axis on the base end side of the arm, the parallel Each arm of the linkage mechanism is driven upward and the pallet in the car receiving position is raised to the parking position. Afterwards,
When the electric motor is stopped, the negative brake is automatically switched to the braking state again, so that the pallet is held fixed in the parking position.

[Effect of idea]

Therefore, since the electric motor equipped with the negative brake and the arm of the parallel quadruple link mechanism are interlocked via gears, as in the conventional case,
There is no possibility that the wire will break and the pallet will suddenly descend along with the car, ensuring sufficient safety. Moreover, because the gears and electric motor are arranged at the base of the arm of the parallel quadruple link mechanism, the number of parts is reduced compared to conventional systems, and tall parts are no longer required, making the entire device bulkier. It was possible to have a low and simple configuration.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, a pair of left and right fixed frames 2, 2 are mounted on a base frame 1 and face each other with an interval L larger than the width W of the automobile C.
In order to switch the pallet 3 for mounting a car between the car receiving position where it is in contact with the ground and the parking position where it is located above the height of the car, a parallel quadruple series is used to raise and lower the pallet 3 while maintaining it in a horizontal position. A link mechanism 4 is attached, and a drive mechanism 5 for driving and swinging the parallel four-link mechanism 4 is provided.

Each of the fixed frames 2 includes a pair of vertical frame portions 2A and 2B located at a predetermined interval in the front and rear;
It is comprised of a horizontal frame part 2C constructed over the top of these vertical frame parts 2A and 2B.

The parallel four-link mechanism 4 has one end of the arms 4A, 4B pivoted near the top of the vertical frames 2A, 2B of each fixed frame 2, respectively, so as to be vertically swingable around the first horizontal axis _X1 . , said arm 4
The other ends of A and 4B are pivotally connected to a bracket 3a connected to the pallet 3 so as to be swingable around a second horizontal axis _X2 , and furthermore, these front and rear arms 4A and 4B
A connecting rod 4C is pivotally connected to the middle portion of the connecting rod 4C.

The drive mechanism 5 includes a vertical frame portion 2A and a horizontal frame portion 2C in front of each fixed frame 2.
The parallel quadruple link mechanism 4
While fixing the arc-shaped first gear 5A centered on the first horizontal axis _X1 on the base end side of the forearm 4A,
The first gear 5 is disposed on the base end side of the forearm 4A.
An electric motor 5D is attached, which includes a second gear 5B that meshes with the motor A and a negative brake 5C that is in a braking state when not energized.

The first gear 5A is configured to have a larger diameter than the second gear 5B on the electric motor 5D side.

Then, when the car C is driven into and stopped at a predetermined position on the pallet 3 in the car receiving attitude, when the electric motor 5D is energized and driven,
The negative brake 5C provided on the electric motor 5D is automatically switched to a brake release state, and at the same time the second gear 5B is driven to rotate. Then, since the first gear 5A meshing with the second gear 5B is fixed to the fixed frame 2 coaxially with the first horizontal axis _X1 on the base end side of the forearm 4A, the electric motor 5D side The second gear 5B moves along the first gear 5A while being driven and rotated, and each arm 4A, 4B of the parallel quadruple link mechanism 4 is driven and swung upward around the first horizontal axis _X1 , The pallet 3 in the car receiving position is raised to the parking position. Thereafter, when the electric motor 5D is stopped, the negative brake 5C is automatically switched to the braking state again, so that the pallet 3 is held fixed in the parking position.

The electric motor 5D is equipped with a sensor 6 that detects when the pallet 3 has been raised to the parking position.
is configured to be automatically stopped based on the detection signal.

[Another example]

In the above embodiment, the first gear 5A was attached to the fixed frame 2, and the electric motor 5D with the second gear 5B was attached to the forearm 4A, but as shown in FIG. The electric motor 5D is attached to the fixed frame 2, and the first gear 5A is attached to the front arm 4.
It may be carried out by attaching them to A respectively.

Further, another safety device for fixing and holding the pallet 3 in the parking position may be used in combination.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the two-stage parking device according to the present invention, FIG. 1 is an overall side view, and FIG.
The figure is a plan view of the entire structure. FIG. 3 is a side view of main parts showing another embodiment, and FIG. 4 is an overall side view showing a conventional two-stage parking device. C... Car, W... Width, L... Spacing, 2...
... Fixed frame, 3... Pallet, 4... Parallel four-link mechanism, 5... Drive mechanism, 5A... First gear, 5B... Second gear, 5C... Negative brake, 5D... Electric motor.

Claims (1)

[Claims for Utility Model Registration] 1. A vehicle receiving posture in which a pallet 3 for mounting a vehicle is placed on the ground on the left and right fixed frames 2, 2 facing each other with an interval L larger than the width W of the vehicle C. In order to switch between the parking position and the parking position located above the vehicle height of the vehicle, a parallel four-link mechanism 4 is installed that raises and lowers the pallet 3 while maintaining it in a horizontal position, and this parallel four-link mechanism 4 is driven and oscillated. This is a two-stage parking device in which a drive mechanism 5 is provided, and the drive mechanism 5 is configured such that one of the fixed frame 2 and the arm 4A of the parallel quadruple link mechanism 4 is provided with the arm 4A. A first gear 5A centered on the rocking axis _X1 on the base end side is fixed, and on the other hand, a second gear 5B meshing with the first gear 5A and a negative brake 5C that is in a braking state when not energized. A two-stage parking device equipped with an electric motor 5D. 2. The two-stage parking device according to claim 1, wherein the first gear 5A has a larger diameter than the second gear 5B on the electric motor 5D side.