JP2851746B2 - Lift parking device for multi-story parking lot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-story parking garage in which a stopper member protrudes and retracts from a guide surface of a guide member which guides a pallet to be lifted and lowered by a lift which places a car in a multi-story parking garage. Lift safety device.

[0002]

2. Description of the Related Art In order to bring a car to a predetermined position in a multi-story parking garage, when the pallet to be mounted and moved up and down is stopped, the pallet is guided up and down so as to ensure safety at that position. A stopper member is provided to be able to move up and down with respect to the guide surface of the guide member, so that the lift can be received by the stopper member even if the holding force of the lift is lost due to an unexpected factor during parking. Safety devices are known.

Conventionally, as such a safety device, for example,
A rotatable lever is provided as a stopper member. A wire or the like is connected to one end of the lever, and the wire is pulled by an operation of a solenoid to rotate the lever, whereby the lever protrudes from the guide surface. Had to be. Then, while the vehicle is parked, the solenoid is energized to maintain the lever in the protruding state.

[0004]

However, the conventional apparatus as described above has two problems of noise and energy saving.

[0005] First, the solenoid and the stopper member move linearly and stop suddenly. The stop emits a loud impact noise because it is made by the collision of the members. The solenoid and the stopper member are usually provided as a set of four on one pallet. When the number of the pallets increases, the impact noise becomes extremely loud.

Next, the solenoid is energized during the parking time, and its power consumption is large. If during this time,
Even if the state is maintained by a spring or the like without depending on the energization of the solenoid, the energization must be performed during the non-parking time,
This does not solve the problem. If the solenoid is energized only when the solenoid is required for operation and the solenoid is not restrained at all when the stopper member is in the protruding state or the retracted state, it becomes extremely unstable and does not function as a safety device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lift safety device for a multi-story parking lot which solves such a problem and can save energy without generating noise under a simple mechanism.

[0008]

According to the present invention, an object of the present invention is to make a stopper member protrude and retract from a guide surface of a guide member which guides a pallet lifted and lowered by a lift in a multistory parking lot. A frame body attached to the guide member, a stopper member supported by the frame body and capable of protruding and retracting with respect to the guide surface, and converting the rotation of a motor provided on the frame body into linear motion to convert the rotation into a linear motion. A rotation / linear motion conversion mechanism connected to the stopper member for transmission to the stopper member; and interlocking with the rotation / linear motion conversion mechanism, the stopper member with respect to the most protruding position and the most immersion position with respect to the guide surface, respectively. A switch mechanism having first and second two switches that operate at front and rear positions of a predetermined width, wherein the motor stops in the range of the predetermined width until receiving the next input current. It is accomplished by being constant.

[0009]

According to the present invention having such a structure, the stopper member operates as follows.

When the pallet stops at the parking position, a command signal is input to the motor, and the motor starts rotating. The rotation of the motor is converted to linear motion by a rotation / linear motion conversion mechanism, and the stopper member protrudes from the guide surface.

When the first switch is operated at a position a predetermined width before the most protruding position of the stopper member, the current of the motor is cut off and the rotation of the motor is stopped. That is, the stopper member stops in the protruding state. In this state,
Although no current flows through the motor, the stopper member moves away from the position to move and requires a force to rotate the motor via the rotation / linear motion conversion mechanism. In both cases, the stopper member is extremely stably maintained in the protruding state.

Next, when the pallet moves toward the warehouse, the motor starts rotating by the command signal.
Then, the motor is removed from the predetermined width on the side of the most protruding position and continues to rotate, and the stopper member enters from the guide surface. The second switch is operated when the stopper member is located a predetermined width before the most retracted position, whereby the current of the motor is cut off and the rotation of the motor is stopped. Then, the stopper member stands by in the immersion state until a command for the next protrusion of the motor comes.

[0013]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of the apparatus of this embodiment, and FIG. 2 is a left side view of the apparatus of FIG.

In FIG. 1, reference numeral 1 denotes a case-like frame, and a lid 2 can be attached to an opening thereof. A screw hole 4 for fixing the frame 1 to the guide member G of the pallet with a bolt 3 is provided on a side portion of the frame 1. Further, a part of the side portion is formed to be thick, and a guide hole 6 for slidably supporting the pin-shaped stopper member 5 is formed. A seal 7 for preventing dust from entering the frame 1 is fitted into the opening of the guide hole 6.

A support member 8 formed by bending a plate member is attached to the inner surface of the frame 1, and a motor 10 with a speed reducer 9 is provided on the support member 8.
A rotating disk 11 is attached to a shaft of the speed reducer 9, and a pin 12 is implanted at one position on a peripheral portion of the rotating disk 11.

On the other hand, a connecting plate 13 having an L-shaped cross section is fixed to an end surface of the stopper member 5 in the frame 1 by a screw 5A. The horizontal portion 13A of the connecting plate 13 faces close to the rotating disk 11 and has a linear length extending in a direction tangential to the rotating disk 11 and perpendicular to the axis of the stopper member 5. A hole 13B (see FIG. 3) is formed,
A pin 12 provided on the rotating disk 11 in the elongated hole 13B
Are engaged. Thus, the motor 1 via the speed reducer 9
The rotation of the rotating disk 11 driven by the
And, it is converted into linear motion by the long hole 13B of the connecting plate 13. With this rotation / linear motion conversion mechanism, the stopper member 5 reciprocates in its axial direction.

Next, switches such as microswitches are attached to the side surfaces of the vertical portions formed on both sides of the horizontal portion 13A of the support member 8. In the case shown in the figure, a first switch 14 is provided on one of the upright portions, and its switch lever 15 is obliquely downwardly facing the guide member G in FIG. 1 to a position beyond the horizontal portion 13A of the connecting plate 13. Is extended. A second switch 16 is provided on the other upright portion, and its switch lever 15 extends diagonally downward in a direction opposite to the guide member G to a position beyond the horizontal portion 13A of the connecting plate 13. Is out. Further, on both side surfaces of the upright portion of the support member 8, legs 18A, 18B which respectively contact the front edge and the rear edge of the horizontal portion 13A of the connecting plate 13 when the connecting plate 13 reciprocates; Inverted U-shaped leg members 18 and 19 having 19A and 19B are respectively mounted on pivot shafts 20 and 21 so as to be pivotable.

The leg members 18 and 19 have friction between the upright portions of the support member 8 and the horizontal portions 13A of the connecting plate 13 at the legs 18A and 18B; 19A and 19B. The front state is maintained until the leading and trailing edges of the abutment. As shown in FIGS. 4 to 6, when the position where the pin 12 of the rotating disk 11 is closest to the stopper member 5 is the rotation angle θ = 0 °, the rotation time θ is 0 °.
(The most protruding position of the stopper member) and 180 ° (the most immersive position) are respectively set at positions closer to the set angle α °, and the first switch 14 and the second switch 16 are switched at these positions. It has become.

The first switch 14, the second switch 16 and the motor 10 are connected as shown in FIG. 8 via a motor switch 22 for giving a command signal to the motor 10. Here, the three switches 14, 16,
In the figure, the contacts 22 are denoted by a at the top and b at the bottom.

The contact b of the first switch 14 and the contact a of the second switch 16 are connected to one end of the winding of the motor,
The other end of the winding is connected to one pole of a DC power supply 24 via a connector 23. The other pole side of the power supply 24 is connected to the neutral terminal of the second switch 16 via the contact b of the motor switch 22. The a contact of the first switch 14 and the b contact of the second switch 16 are connected to terminals 23A and 23B of the connector 23, respectively.

The first and second switches 14, 16
Is such that the rotation angle θ of the pin 12 of the rotating disk 11 is 0 ° −
At the two positions α ° and 180 ° −α °, the contacts a and b are switched in conjunction with each other by the pressing force on the horizontal portion 13A of the connecting plate 13 via the front and rear legs of the leg member. Switching between the contacts a and b of the motor switch 22 is performed manually or by a corresponding switch at the time of stopping and moving the parking pallet.

The operation of the apparatus of this embodiment will be described mainly with reference to FIGS.

First, when the pallet of the parking lot is stored at a predetermined position in a parking state, a command signal S1 (see FIG. 7) is automatically or manually generated based on the stored pallet. Is switched from the b side to the a side as shown in FIG. As a result, a current flows through the motor 10 through the contact b of the first switch 14, and the motor 10 starts rotating (state B). With the rotation of the motor 10, the connecting plate 13 is driven by the pins 12 of the rotating disk 11 and advances rightward in FIG.
From the guide hole 6 of the push-out guide member G.

The rotation angle θ of the pin 12 of the rotating disk 11 that rotates with the rotation of the motor 10 is θ = 0 ° shown in FIG.
When the position reaches −α °, the leg 18A of the leg 18 is pushed by the horizontal portion 13A of the connecting plate 13, and the leg 18A of the leg 18 is moved to the first switch. 14 switch lever 15 is pressed, the first switch 14 is switched to the contact point a and turned ON (state C,
(See FIG. 10). Then, the voltage generated at the terminal 23A can be used for a signal indicating that the stopper member 5 is in the protruding state. On the other hand, the second switch 16
When the position becomes θ = 0 ° −α °, the rear leg 19B of the leg member 19 separates from the switch lever 17 of the second switch 16, so that the switch lever 17 The contact is switched to the contact a side by the restoring force of the inner spring, and the switch is turned off. In the state C, the motor 10 stops because no current flows, continues to advance slightly due to the inertia of the stopper member 5 and the rotation / linear motion conversion mechanism, and has a range of 0 ° −α ° ≦ θ ≦ 0 ° + α °. Stop within.
Thus, the safety of the pallet is ensured by the protruding stopper member 5 in the parked state.

Next, when the pallet enters the unloading state, the motor switch 22 is switched to the contact b side by the signal S2 (see FIG. 7) (see FIG. 11). As a result, a current flows through the motor 10, and the motor 10 starts rotating (state D). The pin 12 of the rotating disk 11 is 0 ° shown in FIG.
After leaving the range of −α ° ≦ θ ≦ 0 ° + α °, the rotation continues as shown in FIG. 5 and the stopper member 5 starts to enter the guide member G. By switching the motor switch 22 to the contact b, no voltage is generated in the first switch 14 as shown in FIG. 11, and the signal indicating the protruding state of the stopper member 5 disappears.

When the motor 10 continues to rotate, the pin 1
When 2 comes to the position of θ = 180 ° −α °, the first switch 14 is turned off by the contact of the first switch 14 on the b side by the action of the leg members 18 and 19 similar to the above case, and the second switch is turned off. The switch 16 is turned on when the contact is on the side b (state A). As a result, no current flows to the motor 10,
The pin 12 stops in the range of 180 ° −α ° ≦ θ ≦ 180 ° + α °, and the stopper member 5 is maintained at the retracted position. During that time, the voltage generated at the connector terminal 23B of the second switch 16 is used as a signal indicating the immersion state. Thus, the stopper member 5 waits in the retracted state until a command for the next projection is given to the switch 22 for the motor.

In the present invention, the rotation / linear motion conversion mechanism is not limited to the illustrated example, and a known mechanism is sufficient.
Further, the switch mechanism described in the embodiment functions as a voltage extracting means for a signal indicating the most protruding / retracting state of the stopper member, in addition to the function of switching between rotation and non-rotation of the motor. However, other functions are not particularly required as long as the motor can be switched.

[0029]

According to the present invention, the following effects can be obtained.

[0030] Noise at the time of stoppage when the stopper member protrudes or enters is significantly reduced. Assuming that the rotation angle of the pin that rotates at the peripheral speed V is θ, the speed Vsinθ of the stopper member in the vicinity of θ = 0 ° and 180 °, which are the most protruding / retracting positions of the stopper member, is extremely small. Therefore, no impulsive sound is emitted at the time of stop. When the angle θ falls within a predetermined range with respect to the position, no current flows to the motor, and the stopper member gradually stops by slightly moving in a linear range corresponding to the predetermined range due to inertia. Becomes smaller.

The mechanism is simple. At the most protruding / retracting position of the stopper member where no current flows through the motor, the stopper member cannot easily move due to the existence of the rotation / linear motion conversion mechanism even if a slight external force acts. Therefore,
A stable position can be maintained without providing a special mechanism for maintaining the most protruding / retracting state.

Energy can be saved with respect to electric power. As a result of the above, if the stopper member is in the most protruding / retracting position when the pallet is used or not used,
No current flows through the motor. Actually, the movement time of the stopper member is extremely short, and the above-mentioned stopped state is very long, so that power can be saved in this point.

[Brief description of the drawings]

FIG. 1 is a sectional view of an apparatus according to an embodiment of the present invention.

FIG. 2 is a left side view of the apparatus in FIG. 1;

FIG. 3 is a bottom view showing a rotating disk and a connecting plate of the apparatus of FIG. 1;

4 is a diagram showing a positional relationship between a rotating disk and a connecting plate of the apparatus shown in FIG. 1;

FIG. 5 is a diagram showing a positional relationship between a rotating disk and a connecting plate of the apparatus shown in FIG. 1;

FIG. 6 is a view showing a positional relationship between a rotating disk and a connecting plate of the apparatus shown in FIG. 1;

FIG. 7 is a time chart illustrating the operation of each unit of the apparatus in FIG. 1;

FIG. 8 is a diagram showing an electrical connection of the device in FIG. 1;

FIG. 9 is a diagram showing an electrical connection of the apparatus in FIG. 1;

FIG. 10 is a diagram showing an electrical connection of the apparatus in FIG. 1;

FIG. 11 is a diagram showing an electrical connection of the apparatus in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 5 Stopper member 10 Motor 11, 12, 13 Rotational / linear motion conversion mechanism 14, 16 Switch mechanism

Claims (2)

(57) [Claims] A stopper attached to a guide member, wherein the stopper member protrudes and retracts with respect to a guide surface of a guide member that guides a pallet that is lifted and lowered by a lift in a multi-story parking lot. And a stopper member that can be retracted to and retracted from the guide surface, and a rotation / straight connector connected to the stopper member for converting rotation of a motor provided on the frame into linear motion and transmitting the linear motion to the stopper member. The first and second actuation mechanisms are operated at front and rear positions each having a predetermined width around the most protruding position and the most immersive position of the stopper member with respect to the guide surface in conjunction with the rotation / linear motion converting mechanism. A switch mechanism having two switches, wherein the motor is set so as to be stopped until receiving the next input current in the range of the predetermined width. Ft safety device. 2. The three-dimensional parking device according to claim 1, wherein the two switch mechanisms emit predetermined signals in a range of a predetermined width with respect to a most protruding position and a most retreating position of the stopper member. Lift safety device for parking lot.