JPH0411091Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is configured such that a movable part on which a car is parked is driven by a drive device to move to a predetermined position, and is used as a position detection means for the movable part. Regarding parking devices that use limit switches, even if the limit switch does not operate properly due to water getting inside, especially when it is installed outdoors, there is no risk of the movable parts going out of control and it is safe. It is characterized by:

[Conventional technology]

Conventionally, in order to make effective use of limited parking lot space, a movable part on which a car is parked is driven by a drive device such as a motor and moved to a predetermined position, and a position detecting means for the movable part is used. Various parking devices using limit switches have been provided (for example, Japanese Patent Publication No. 56-23513
(see publication). In such a device, a drive device such as a motor is actuated by a switch signal or other control signal by an operator, whereby a movable part starts to move, and the movable part moves to a position where a car can enter or exit a garage, for example. When the detection lever of the limit switch is struck, the drive device is stopped by a position detection signal from the limit switch, and the movable part is stopped at a predetermined position. Incidentally, as the position detection signal, generally either a normally open contact or a normally closed contact of a limit switch is used.

If such a parking device is installed indoors, water is unlikely to enter the limit switch, but if it is installed outdoors, rainwater or the like may enter the limit switch. If water enters the limit switch, the normally open or normally closed contacts inside will be short-circuited by the water, regardless of whether the detection lever is tapped or not, so the position detection signal will be sent from the limit switch. will not be emitted.

However, in the above-mentioned conventional parking devices, no consideration was given to the problem of water entering the limit switch, and the limit switch was assumed to always operate normally, so if water entered the limit switch, , even though the movable part has moved and reached the predetermined position, the limit switch does not issue a position detection signal, so the drive device continues to operate, causing the movable part to run out of control without stopping at the predetermined position. It had some flaws. Therefore, there is a risk that the vehicle may be damaged or the parking device itself may be damaged, resulting in a very dangerous situation.

[Problem that the invention attempts to solve]

The present invention eliminates the drawbacks of the prior art described above, and even if the limit switch for detecting the position of a movable part does not operate normally due to water intrusion into the limit switch when installed outdoors, the limit switch can still be moved. The purpose of the present invention is to provide a parking device that is safe and free from the risk of parts running out of control.

[Means for solving problems]

In order to solve the above problems, the present invention has a configuration including a stop circuit that stops the drive device of the movable part when the normally open contact and the normally closed contact of the limit switch for detecting the position of the movable part are simultaneously conductive. It is something.

The normally open contact is a contact that does not conduct when the detection lever of the position detection limit switch is not tapped, but conducts when the detection lever is tapped, and is a contact that is built into the position detection limit switch. This refers to the contact point that has been made.
The normally closed contact is a contact that conducts when the detection lever of the limit switch for position detection is not tapped, and does not conduct when the detection lever is tapped, and together with the normally open contact, detects the position. A contact point built into a limit switch.

[Operation] As long as the limit switch for detecting the position of a movable part is operating normally, its normally open and normally closed contacts cannot be conductive at the same time.

However, if water intrudes into the position detection limit switch, either the normally open contact or the normally closed contact, or both, will be short-circuited due to the infiltrated water, and as a result, the normally open contact and the normally closed contact will simultaneously This results in conduction. In other words, if only the normally open contacts are short-circuited due to infiltrated water, when the detection lever of the position detection limit switch is not pressed (when the movable part has not reached the specified position), If only the closed contact is short-circuited, both the normally-open contact and the normally-closed contact are short-circuited by water that has entered when the detection lever is tapped (when the movable part reaches the specified position). In all cases, the normally open and normally closed contacts will conduct at the same time. Note that even if water enters the position detection limit switch, if the water does not short-circuit both the normally open and normally closed contacts, the normally open and normally closed contacts will not conduct at the same time. In this case, the position detection limit switch operates normally, so there is no risk of the movable part going out of control. Therefore, when water enters the position detection limit switch and the position detection limit switch enters an abnormal state, that is, when there is a risk that the movable part will run out of control, the normally open contact and the normally closed contact become conductive at the same time. It is something.

In addition, in the present invention, a stop circuit is provided that stops the drive device of the movable part when the normally open contact and the normally closed contact of the position detection limit switch are conductive at the same time. When the detection limit switch becomes abnormal, the drive device for the movable part is stopped. Therefore, according to the present invention, the movable part is always stopped when there is a risk of the movable part running out of control, thereby preventing the movable part from running out of control.

〔Example〕

The present invention will be described below based on embodiments shown in the drawings.

The parking device of the present invention is configured, for example, as shown in the first drawing.

That is, a plurality of first parking spaces 1, 2, 3, and 4 for entering and exiting the garage are arranged in parallel in the horizontal direction.
Second parking spaces 11, 12, 13, and 14 are formed above the parking spaces 1, 2, 3, and 4. In addition, the first parking spaces 1...4 are as follows:
They are formed in a continuous position on the ground etc. so that cars can enter and exit the garage. On the other hand, it is not possible to directly enter or exit a car from the second parking spaces 11...14.

The above-mentioned first parking space 1...the fourth group has the said first parking space.
The number of horizontal parking pallets 1a, 2a, 3a, which is one less than the number of parking spaces, is provided, and the second parking spaces 11...14 are provided with elevating parking pallets 11a...14a, respectively.

In addition, the above-mentioned horizontal parking pallets 1a, 2a, 3a
and the elevating parking pallets 11a...14a are configured in a shape on which a car can be placed, and these correspond to the movable parts on which the car is parked.
Further, the above-mentioned sideways parking pallets 1a, 2a, and 3a are configured to be able to move between adjacent first parking spaces 1...4, and for example, sideways parking pallet 2a moves between adjacent first parking spaces 2 and 4. It is now possible to move between , and 3. Also,
The elevating parking pallets 11a...14a are configured to be able to move up and down between the corresponding first parking spaces 1...4 and second parking spaces 11...14, for example, the elevating parking pallets 1...
2a can move between the first parking space 2 and the second parking space 12. And each of the above-mentioned horizontal parking pallets 1a, 2a, 3a
rampant movement and each of the above-mentioned elevating parking pallets 11a...1
The elevators 4a are raised and lowered by motors (not shown), which are provided correspondingly to the elevators 4a.

Furthermore, each of the above-mentioned horizontal parking pallets 1a, 2a,
A position detection limit switch is provided for detecting in which first parking space 1...4 or second parking pallet 11...14 each of the parking pallets 11a...14a is located. That is, for example, sideways parking pallet 2
Regarding a, a position detection limit switch 31 for detecting that the pallet is located in the first parking space 2 and a position detection limit switch 32 for detecting that the pallet is located in the first parking space 3 are provided. A position detection limit switch 33 for detecting that the vehicle is located in the second parking space 12 and a position detection limit switch 34 for detecting that the vehicle is located in the first parking space 2 are provided for the vehicle. Note that other position detection limit switches are omitted in the drawings.

Furthermore, the above-mentioned elevating parking pallet 11a...
14a, when these elevating parking pallets are located in the second parking space,
A switch (not shown) is provided as a selection operation means for lowering the vehicle into the first parking space in order to enter or exit the elevator parking pallet.

A control circuit (not shown) is provided to perform the following control. That is, when the elevating parking pallet 14a is selected by the selection operation means in order to enter and exit from the elevating parking pallet 14a in the state shown in FIG. 1a, for example, the control circuit first controls the elevating parking as shown in FIG. In order to empty the first parking space 4 below the pallet 14a, the horizontal parking pallets 2a and 3a are sequentially moved horizontally, and then the vertical parking pallet 1 is moved as shown in FIG. 1c.
4a to the first parking space 4 is automatically controlled. and,
In this case, when the state shown in Figure 1c is reached,
Vehicles are entered and exited from the elevating parking pallet 14a.

In the above control, position detection signals from each of the position detection limit switches are used. That is, for example, in order to shift from the state shown in FIG. 1a to the state shown in FIG.
The motor corresponding to the position detection limit switch 31 is actuated to start the transverse parking pallet 2a, and when the transverse parking pallet 2a reaches the first parking space 2, the detection lever of the position detection limit switch 31 is struck. As a result, the motor is stopped, and the transverse parking pallet 2a is stopped in the first parking space 2, resulting in the state shown in FIG. 1b.

In addition, the parking device of the present invention is configured such that the movable part on which the car is parked is driven by a drive device to move to a predetermined position, and a limit switch is used as the position detection means of the movable part. However, the present invention is not limited to the configuration shown in the first diagram.

Further, in the present invention, a stop circuit is provided that stops the motor, etc., which is the drive device, when the normally open contact and the normally closed contact of the position detection limit switch are simultaneously conductive.

Figure 2 shows the position detection limit switch 3.
FIG. 1 is an electrical circuit diagram showing an example of a stop circuit corresponding to FIG.

In the figure, 31a is a normally open contact of the position detecting limit switch 31, which is not conductive when the detection lever is not struck, and is conductive when the detection lever is struck. Reference numeral 31b is a normally closed contact of the position detecting limit switch 31, which is conductive when the detection lever is not tapped, and is not conductive when the detection lever is tapped. Further, 40, 41, 42 correspond to the coil parts of the relay, and 40a, 41a, 42a correspond to the respective coil parts 40, 41, 42, respectively, and are made conductive only when each coil part 40, 41, 42 is energized. relay contact (so-called a contact)
It is. Further, 43 is a hold release switch, and 44 is an alarm such as a buzzer. In addition, the second
In the figure, a power source (not shown) is connected to the arrow. Although not shown in the drawings, another contact (A contact) of the relay corresponding to the coil section 41 is used, and when the coil section 41 is de-energized, only the motor serving as the corresponding drive device stops. It's becoming like that. That is, other contacts of the relay corresponding to the coil portion 41 are used as position detection signals. Also, although not shown in the drawing,
Another contact (so-called b contact) of the relay corresponding to the coil section 42 is used, and when the coil section 42 is energized, all the motors serving as drive devices are stopped.

According to the above stop circuit, the normally open contact 31a and the normally closed contact 31b of the position detection limit switch 31
When conductive at the same time, the coil parts 40 and 41 are energized at the same time, and the contacts 40a and 41a are conductive at the same time, thereby energizing the coil part 42. As a result, all the motors serving as drive devices are stopped, and the alarm is activated. It is activated. In addition,
In the case shown in the second figure, once the coil part 42 is energized, the hold release switch 43 and the contact 42a
Unless the hold release switch 43 is operated by the hold circuit 45 consisting of
The energized state of the motor is maintained, and the stopped state of the motor and the activated state of the alarm 44 are maintained. However, the hold circuit 45 does not necessarily need to be provided.

Note that the other position detection limit switches are also provided with a stop circuit similar to that shown in FIG.
However, a stop circuit similar to that shown in FIG. 2 may be provided only for position detection limit switches that are particularly likely to malfunction.

It should be noted that although the stop circuit shown in the second diagram is composed of a relay, it is obvious that it can be composed of other electronic circuits, sequence controllers, etc.

According to the present invention having the above configuration, since a stop circuit is provided, when the position detection limit switch becomes abnormal due to water infiltration, etc., the drive device such as the motor etc. is stopped. . Therefore, the movable part is always stopped when there is a risk of the movable part running out of control, thereby preventing the movable part from running out of control.

[Effect of idea]

According to the present invention, even if the position detecting limit switch does not operate normally due to water intrusion into the interior, there is no risk of the movable part going out of control, and a safe effect can be obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic configuration diagram, and FIG. 2 is an electric circuit diagram showing a part of a stop circuit. 31, 32, 33, 34... Limit switch for position detection, 31a... Normally open contact, 31b... Normally closed contact.

Claims (1)

[Claims for Utility Model Registration] A parking device in which a movable part on which a car is parked is driven by a drive device to move to a predetermined position, and a limit switch is used as a position detection means for the movable part, comprising: a normally open contact that is electrically conductive when the detection lever of the limit switch is struck by the movement of the movable part and not electrically conductive when the detection lever is not struck; A normally closed contact that does not conduct when the detection lever is tapped and conducts when the detection lever is not tapped is built-in, and when the normally open contact and the normally closed contact conduct at the same time, the movable contact A parking device comprising a stop circuit for stopping a drive device of the parking device.