JPH08218668A - Parking control device - Google Patents

Abstract

PURPOSE: To prevent damage to a locking plate driving mechanism when any overload operates on a locking plate in any state, avoid severe trouble even when legs or hands are caught by the locking plate when closed and stop the movement of the locking plate always when closed. CONSTITUTION: A locking plate driving mechanism operates a freely open/closed locking plate 2 with the motive power of a motor 1. Gear trains are laid between the motor 1 and the locking plate 2 and a bidirectional conical clutch which consists of a male member with the outer face a conically tapered and a female member 13 with the inner face conically tapered to be fitted to the male member is provided in the gear trains so that the transmission of overload applied on the locking plate 2 in the open and closed directions can be cut off. A gap is provided between a fixing member, which holds the locking plate 2 when the locking plate 2 is closed, and the locking plate 2. At least one gear in the gear trains has a cutoff portion to disengage the locking plate 2 when closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking management device for automobiles installed in a parking lot. More specifically, the present invention relates to an improvement of a parking management device that mechanically restrains a parked automobile or the like and releases the restraint by paying a fee or the like.

[0002]

2. Description of the Related Art Conventionally, there has been known a parking management device which mechanically restrains a parked automobile or the like and releases the restraint by paying a fee or the like. As such a parking management device, as shown in FIG. 7, a lock plate drive mechanism 51 including an openable and closable lock plate 50 for prohibiting the parking vehicle from leaving.
A vehicle detector 52 including a loop sensor or the like buried in the ground, and a control unit 54 including a control unit 53 for receiving the signal from the vehicle detector 52 and controlling the lock plate drive mechanism 51. It is known to consist of

As a lock plate drive mechanism used in such a parking management device, for example, a mechanism as shown in FIG. 8 is adopted (see Japanese Patent Laid-Open No. 60-19875). In this lock plate drive mechanism 60, a reduction gear mechanism 62 is connected to a motor 61, and a bevel gear 63 is connected to the reduction gear mechanism 62. The rotation of the bevel gear 63 is transmitted to the spur gear 64 via the gear train. The spur gear 64 is rotatably attached to a fixed shaft 65, and is connected to a rotary flange 67 by a Maki spring 66. The rotary flange 67 is connected to a shaft 69 to which a lock plate 68 is fixed via a link mechanism. The rotary flange 67 is provided with a transmission pin 70, and the spur gear 64 is provided with a convex portion 71 with which the transmission pin 70 is engaged. A spring 72 that elastically biases the lock plate 68 in the standing direction, that is, the opening direction is wound around the shaft 69. When the lock plate 68 is loaded with a torque equal to or more than the allowable torque of the lock plate drive mechanism, the Maki spring 66 moves the fixed shaft 65.
Sliding up, the rotation flange 67 is allowed to rotate with respect to the fixed shaft 65. This movement prevents the lock plate drive mechanism from being damaged even in the case of overload.

Further, the stepping portion for accommodating the lock plate used in this type of parking management device has a structure as shown in FIG. When the vehicle is stored, the stepped-up portion 80 has a base portion 81 on which wheels are first mounted, and a lock plate 82 which is closed at the time of storage and is opened as shown by a dotted line after the storage.
And an auxiliary base portion 83 forming a gentle slope in cooperation with the lock plate 82. Then, the stepped portion 80 has a structure in which the movement of the motor for operating the lock plate 82 is detected and the motor is stopped at the position where the lock plate 82 contacts the auxiliary base portion 83. The lock plate 82 in this example corresponds to the lock plate 68 shown in FIG. The base 81 and the auxiliary base 83 form a fixed portion that holds the lock plate 82.

[0005]

However, the conventional overload preventing mechanism shown in FIG. 8 tries to leave the vehicle when the charge is properly paid and the lock plate 68 is gradually closed. If it hits the locking plate 68, there is a risk of damaging the gear train or the transmission pin 70. That is, when the lock plate 68 is closed, the convex portion 71 engages with the transmission pin 70, and the rotational force of the spur gear 64 is transmitted to the rotating flange 67 by 100%. Therefore, if an overload in the direction opposite to this closing operation is applied to the lock plate 68, the sliding action of the Maki spring 66 does not work, and the overload is transmitted to the gear train as it is via the transmission pin 70 and the transmission pin 70. To be Therefore, the gear train or the transmission pin 70 is damaged.

Further, since the conventional overload preventing mechanism shown in FIG. 8 uses the Maki spring 66 which is a spring coil, the portion for accommodating this overload preventing mechanism becomes wide. As a result, the lock plate drive mechanism becomes large in size, which is one of the factors that hinder the efficient use of the parking space. Furthermore, it is necessary to give a strong tightening force to the maki spring 66, which makes it difficult to assemble or replace it in case of failure. In addition, a spring having a strong spring force is generally expensive, and the Maki spring 66 is also expensive.

Further, the conventional step 80 shown in FIG.
The lock plate 8 is provided so that no gap is created between the lock plate 8 and the auxiliary base portion 83.
Since the two are configured to be closed tightly, there is a risk of a serious accident resulting in serious injury when a person pinches his foot or a playing child pinches his hand.

Further, in the step 80, if the detection means for detecting the movement of the motor fails or the circuit for stopping the motor fails, the lock plate 82 bites into the auxiliary table 83 due to the overrun of the motor. Things happen. When this bite phenomenon occurs, the lock plate 82 does not operate thereafter, and the parked vehicle can enter and exit free of charge. In addition, if this bite phenomenon occurs when a person sandwiches a foot or a child who is playing sandwiches a hand, there is a risk of leading to a fatal accident beyond serious injury.

SUMMARY OF THE INVENTION An object of the present invention is to provide a parking management device in which the lock plate drive mechanism is not damaged by overload in any state of the lock plate.

Further, according to the present invention, when the lock plate is closed,
It is an object of the present invention to provide a parking management device that does not cause a serious accident even if it sandwiches its legs or hands.

A further object of the present invention is to provide a parking management device which always stops the movement of the lock plate at the end of the closing operation of the lock plate.

[0012]

In order to achieve the above object, a parking management system according to a first aspect of the present invention comprises a lock plate drive mechanism for operating a lock plate which can be opened and closed by the power of a motor. In, a gear train is interposed between the motor and the lock plate, and in the gear train, a male member having a conical taper surface on the outer surface and the male member are fitted to each other, and the conical taper surface is formed on the inner surface. The bidirectional conical clutch composed of the female member of the above is provided to disconnect the transmission of the overload acting on the lock plate in the opening direction and the closing direction.

According to a second aspect of the present invention, in the parking management apparatus according to the first aspect, a groove is provided on one tapered surface of one of the male member and the female member of the bidirectional conical clutch, and a metal member is provided between the tapered surfaces. The thin plate is sandwiched, and the thin plate is pressed by both members so that a part of the thin plate is projected into the groove.

Further, the parking management system of the invention of claim 3 is a parking management system comprising a lock plate drive mechanism for operating a lock plate which can be opened and closed by the power of a motor, and when the closing operation of the lock plate is completed, the lock is performed. A gap is provided between a fixing member that holds the plate and the lock plate.

According to a fourth aspect of the present invention, in the parking management apparatus according to the third aspect, the gear train is interposed between the motor and the lock plate, and the final portion of the gear train is attached to the main shaft that fixes the lock plate. The final gear is fixed, and the final gear is provided with a cutout portion that disengages when the closing operation of the lock plate is completed.

Further, according to a fifth aspect of the present invention, there is provided a parking management device including a lock plate drive mechanism for operating a lock plate which can be opened and closed by the power of a motor. A wheel train is interposed, and at least one of the gears in the gear train is provided with a cutout portion that disengages at the end of the closing operation of the lock plate.

According to a sixth aspect of the present invention, in the parking management system according to the fifth aspect, a final gear, which is the final portion of the gear train, is fixed to the main shaft that fixes the lock plate, and the notch is provided in the final gear. Is provided.

[0018]

Therefore, in the parking management apparatus according to the first aspect, the power from the motor is transmitted to the lock plate via the gear train, and the lock plate operates. On the other hand, even if the lock plate is in any state such as when the lock plate is in the open state or when the lock plate is in the closing operation, when an abnormal force is applied to the lock plate, the bidirectional conical clutch operates and the abnormal force is applied. Transmission, ie overload transmission, is disengaged at this bidirectional conical clutch part.

In addition, in the invention of claim 2, the thin metal plate sandwiched between the tapered surfaces of the bidirectional conical clutch is
This is the contact surface between the male member and the female member of the bidirectional conical clutch.
Further, this metal thin plate is pushed by the male member and the female member of the bidirectional conical clutch to project into the groove provided in one of the male member and the female member and does not come off from the member having the groove. .

According to the third aspect of the parking management apparatus, the lock plate operates by receiving the power from the motor. Then, at the end of the closing operation of the lock plate, the lock plate stops in a state where a gap is formed between the lock plate and the fixing member.

In addition, in the invention of claim 4, the lock plate is operated via the gear train between the motor and the lock plate. Then, the final gear, which is the final part of the gear train, is fixed to the main shaft that fixes the lock plate, and this final gear has a notch that disengages when the closing operation of the lock plate is completed. When comes off, a gap is created.

Further, in the parking management apparatus of the fifth aspect, the power from the motor is transmitted to the lock plate via the gear train, and the lock plate operates. Then, in the closing operation, just before the lock plate is completely closed, at least one of the meshes of the gears is disengaged, and the power of the motor is not transmitted to the lock plate.

In addition, according to the invention of claim 6, the final gear, which is the final portion of the gear train, is fixed to the main shaft for fixing the lock plate, and the notch portion is provided in this final gear. The movement angle of the final gear having the angle becomes the movement angle of the lock plate.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 to 6 show an embodiment of the parking management device of the present invention. This parking management device has the same basic configuration as the conventional system shown in FIGS. 7 and 8. That is,
The parking management device includes a lock plate drive mechanism that operates a lock plate 2 that can be opened and closed by the power of a motor 1. Specifically, a lock plate drive mechanism including an openable / closable lock plate 1 for prohibiting the exit of the parked vehicle, and a vehicle detector (not shown) including a loop sensor embedded in the ground for detecting an iron material, and the like. , A columnar control unit (not shown) in which a control unit for controlling the lock plate drive mechanism in response to the signal from the vehicle detector is incorporated.

The basic structure of the lock plate drive mechanism used in this parking management device is a motor 1, a gear train that transmits the power of the motor 1 to the lock plate 2, and an overload that is placed in the gear train. Sometimes it consists of a bidirectional conical clutch that disconnects the transmission of force by the gear train.

Here, the motor 1 includes a deceleration gearbox 3 for decelerating the rotation of the rotary shaft of the motor 1 when the power supply to the motor 1 is turned off, and an electromagnetic brake for blocking the rotation of the rotary shaft of the motor 1. 4 and 4 are fixed.

On the other hand, the gear train includes a first gear 6 fixed to the tip of a first rotating shaft 5 serving as an output shaft of the motor 1, and a second large-diameter gear meshing with the first gear 6 to reduce rotation. Gear 7
A second rotary shaft 8 for fixing the second gear 7, and a small diameter third gear 9 fixed to the other end of the second fixed shaft 8.
A large-diameter fourth gear 10 that meshes with the third gear 9 to reduce rotation, and a third rotating shaft 11 that fixes the fourth gear 10.
And a conical body 11a fitted and fixed to the third rotating shaft 11 to be a male member, and a tapered surface 12 of the conical body 11a.
A fifth gear 13 serving as a female member that is fitted to the fifth gear 13, a sixth gear 14 that meshes with the fifth gear 13 to reduce rotation, and a main shaft 15 that fixes the sixth gear 14 and the lock plate 2. There is. The sixth gear 14 is the final gear that is the final part of the gear train.

The bidirectional conical clutch has a conical body 11a which is a male member having a conical tapered surface 12 on its outer surface.
And the conical tapered surface 1 fitted to the conical body 11a.
The fifth gear 13 which is a female member having an inner surface 6 and a thin copper plate 17 which is sandwiched between the two members 11a and 13 and which covers the tapered surface 12 of the conical body 11a and has a conical and cylindrical shape.
A groove 18 formed in a circular shape on the tapered surface 12 of the conical body 11a, and a male screw portion 19 formed on the conical body 11a.
A disc spring 20 that abuts the side surface of the fifth gear 13, and a donut-shaped metal plate 21 that abuts the side surface of the disc spring 20.
And a thrust bearing 22 that abuts the side surface of the metal plate 21, and a nut 23 that abuts the side surface of the thrust bearing 22 and screw-engages with the male screw portion 19. The nut 23 has a lock mechanism or a rotation stop function. Further, all of the disc spring 20, the metal plate 21, and the thrust bearing 22 have a hole in the center, and the male screw portion 19 of the conical body 11a is inserted into the hole, but they are not screw-engaged. . The three members 20, 21, 22 are pressed against the fifth gear 13 side, which is a female member, by the screw rotation of the nut 23. By this pressing, the thin plate 17 is further thinly stretched to both sides, and protrudes from the end portion of the fifth gear 13. This protruding portion 17
Since a and 17a are slightly bent to the fifth gear 13 side, as shown in FIG.
The large movement of the fifth gear 13 in the direction of arrow A in FIG. On the other hand, a part of the central portion of the thin plate 17 has a groove 18
Then, the thin plate 17 is locked to the tapered surface 12.

The motor 1 and the train wheel are housed in a box-shaped box portion 24 fixed to the land. The second rotary shaft 8 is supported by the support plates 25, 25 fixed to the box portion 24 via ball bearings 26, 26.
Further, one end side of the third rotating shaft 11 is supported by slide bearings 27, 27 fixed to the support plates 25, 25, and the other end side where the bidirectional conical clutch is installed is fixed to the box portion 24. It is supported by a ball bearing 29 placed in a bearing box 28. The main shaft 15 is also supported by a ball bearing 30 placed in a bearing box 28. Further, on the main shaft 15, an upper limit sensor means 31 for detecting the upper limit of the lock plate 2, that is, the position in the fully open state, and a lower limit sensor for detecting the lower limit of the lock plate 2, that is, the position in the fully closed state. Means 32 are provided. On the other hand, the box portion 24 is provided with an upper limit sensor 33 and a lower limit sensor 34. Further, in order to prevent the third rotary shaft 11 and the main shaft 15 from bending, a flexure prevention plate 35 is hung on both the shafts 11 and 15.

Further, the structure shown in FIG. 5 is adopted as a step portion for accommodating the lock plate 2 used in this parking management device. When the vehicle is stored, the step portion 40 has a platform 41 on which wheels are first mounted, a lock plate 2 which is closed at the time of storage and is opened after the storage, and the weight of the vehicle passing through the lock plate 2 causes the lock plate 2 to move. 2 has a plurality of triangular supporting portions 2a formed so as to withstand, and two springs 42, 4 that elastically bias the opening direction when the lock plate 2 is closed.
2, a plurality of stopper portions 43 that serve as stoppers when the lock plate 2 is opened, a bearing portion 44 that supports one end of the main shaft 15, and a fixed support portion that supports each of the above portions and is fixed to the land. And 45. And the base 4
1 and the fixed support portion 45 form a fixed portion that holds the lock plate 2. Since the step part 40 of this structure does not have the auxiliary part shown in FIG. 9, the overall weight is reduced. In addition, in the past, there was a case where a tape was attached so as to straddle the lock plate and the auxiliary base portion to prevent the lock plate from operating and free parking was performed. It becomes difficult to stick firmly.
For this reason, free parking cannot be done by pasting tape as in the past.

Next, the operation of the thus constructed parking management device will be described.

When the vehicle enters the parking lot, the vehicle detector, which is a loop sensor, detects the vehicle. The sensing starts the time measurement. Then, after about 4 seconds, the vehicle recognition lamp provided in the columnar control section blinks for about 15 seconds thereafter and then disappears. On the other hand, about 3 from the first vehicle detection
After 0 seconds, the detection circuit operates again to detect the presence / absence of the vehicle. As described above, the vehicle sensor including the loop sensor constantly detects the vehicle at intervals of about 30 seconds, and the vehicle is detected by detecting the vehicle twice consecutively. When the vehicle is detected twice in succession, the motor 1 is operated by the signal from the control unit to drive the lock plate 2 in the opening direction. Simultaneously with the operation, the basic charge is displayed on the charge display window provided in the columnar control unit. When the vehicle enters the parking lot and the service time is set in this parking management device, the vehicle recognition lamp blinks for about 15 seconds and then
It lights up. Further, the vehicle detector constantly detects the vehicle at intervals of about 30 seconds, and when two consecutive vehicle detection signals are generated, the lock plate drive mechanism opens the lock plate 2 many times until the upper limit sensor operates. Try to drive in the direction. On the other hand, unless the vehicle detection signal is generated twice consecutively, the lock plate drive mechanism is repeatedly locked until the lower limit sensor operates.
To drive in the closing direction.

When the receipt of the vehicle is confirmed and the motor 1 starts to operate, the power of the motor 1 is transmitted to the main shaft 15 while being decelerated via the gear train of the lock plate drive mechanism to open the lock plate 2 in the opening direction. Drive to. When the lock plate 2 reaches the upper limit of the open state, the upper limit sensor 33 operates to turn off the motor 1. Then, the electromagnetic brake 3 is activated to hold the position of the lock plate 2 after completion of the opening operation. The electromagnetic brake 3
Is a so-called off-brake that is interlocked with the motor 1 and operates in a non-energized state. In this way, by opening the lock plate 2, it is possible to prevent the entering vehicle from exiting. The movement angle α of the lock plate 2 at this time
Is set to about 72 degrees.

When the basic time elapses, the sum of the additional charges is displayed in the charge display window. The basic time, basic charge, additional time, and each time unit of the additional charge and each charge unit can be freely set according to the purpose. When a coin is inserted into the coin slot provided in the columnar control unit, it is detected by the detection function of the control unit in the control unit, and the coin amount is deducted from the amount in the charge display window. Then, when the displayed charge becomes zero, a signal is output from the control unit,
The motor 1 is operated to drive the lock plate 2 in the closing direction.

At this time, the power of the motor 1 is transmitted to the main shaft 15 while being decelerated via the gear train of the lock plate drive mechanism. Then, the lock plate 2 is attached to the springs 42, 42.
It drives in the closing direction while resisting the elastic force of. When the lock plate 2 reaches the lower limit of the closed state, the lower limit sensor 34 operates and the motor 1 is turned off. Then, the electromagnetic brake 3 is activated to hold the position of the lock plate 2 after completion of the closing operation. In this closed state, a slight gap G of about 20 mm is created between the lock plate 2 and the fixed support portion 45 of the step portion. In this way, by closing the lock plate 2, it is possible to exit the stored vehicle.

Abnormal warehousing may occur in addition to the above normal warehousing and unloading. For example, a vehicle that has entered the warehouse may try to leave without paying the fee. In this case, the lock plate 2 bends as shown by the alternate long and short dash line in FIG.
After that, when the vehicle gets over the lock plate 2, the lock plate 2
Both the reaction force of the deflection and the vehicle load are suddenly applied to the. This force overloads and normally damages the gears or shafts of the lock plate drive train. However, this lock plate drive mechanism includes a bidirectional conical clutch, and when such an overload in the closing direction is applied, the fifth gear 13, which is a female member, resists the elastic force of the disc spring 20. 4 is slightly displaced in the direction of arrow A, and a slight gap is created between the thin plate 17 made of copper. For this reason, the fifth gear 13 idles and the transmission of the overload in the closing direction is cut off, so that the lock plate drive mechanism is not damaged. It should be noted that the idling of the fifth gear 13 causes the lock plate 2 to shift from the normal position to the closing direction in accordance with the impact force at that time. Since the control is performed by detecting 31 and the lower limit sensor protrusion 32, malfunction does not occur.

In addition, when the lock plate 2 starts to move in the opening direction, there is a case in which a vehicle that has once entered the parking area suddenly attempts to stop the parking and exit the vehicle. In this case, the accelerated vehicle collides with the lock plate 2 and an extremely large force is applied. This force causes an overload, and in the conventional lock plate drive mechanism shown in FIG. 8, the transmission pin and the gears of the gear train are damaged. However, this lock plate drive mechanism includes a bidirectional conical clutch, and even if such an overload in the opening direction is applied, the bidirectional conical clutch operates similarly to the closing direction, and the lock plate drive mechanism is not damaged.

The above-described embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the copper thin plate 17 is interposed between the conical body 11a which is the male member of the bidirectional conical clutch and the fifth gear 13 which is the female member, but the thin plate 17 should not be interposed. You can In that case, it is necessary to sufficiently lap both the tapered surface 12 of the conical body 11a which is the male member and the conical tapered surface 16 of the fifth gear 13 which is the female member, and to fill the groove 18 with oil for sliding. .

Further, the groove 18 is not the tapered surface 12 of the conical body 11a but the fifth gear 13 whether the thin plate 17 is interposed or not.
The taper surface 16 may be provided. Further, instead of the disc spring 20, other elastic means such as a coil spring may be adopted. Further, the thin plate 17 is preferably made of copper in terms of friction, durability and operability of the bidirectional conical clutch, but other thin metal plates having a smooth surface may be used. Further, the conical body 11a, which is a male member, and the third rotating shaft 1
1 and 1 may be integrally formed instead of separate parts.

At least one of the gears in the gear train is provided with a notch for disengaging the lock plate 2 at the end of the closing operation of the lock plate 2 so that the power of the motor 1 is not transmitted to the lock plate 2. May be. In that case, if a notch is provided in the sixth gear 14 which is the final gear of the gear train, the movement angle of the sixth gear 14 becomes the movement angle of the lock plate 2 as it is, and the assembly adjustment is easy. Therefore, it is most preferable. In this disengaged state,
Due to the elastic force of the springs 42, 42, the sixth gear 14 is brought to the meshing start position. Therefore, when the motor 1 starts to operate, the sixth gear 14 immediately starts meshing with the fifth gear 13.

Further, in addition to the loop sensor, other detecting means such as an infrared sensor can be adopted for vehicle detection, or the loop sensor and the infrared sensor can be used together. In addition, the present invention incorporates a conventional vehicle detector including a loop sensor embedded in the ground, a control unit that receives a signal from the vehicle detector, and controls the lock plate drive mechanism. It is suitable for use in a parking management device having such a control unit, but it is applicable as long as it has at least a lock plate drive mechanism that operates a lock plate that can be opened and closed by the power of a motor.

[0043]

As is apparent from the above description, in the parking management system according to the first aspect of the present invention, the lock plate is in any state such as when the lock plate is in the open state or when the lock plate is in the closing operation. However, when an overload is applied, the bidirectional conical clutch operates, and the transmission of the abnormal force is cut off by the bidirectional conical clutch portion, so that the lock plate drive mechanism is not damaged by the overload. Further, since the bidirectional conical clutch formed by fitting the male member and the female member having the tapered surface is used, the lock plate drive mechanism does not become large, and the parking space can be efficiently used. Further, it is not necessary to use an elastic member having a strong tightening force, which facilitates assembly work and replacement work at the time of failure, and also reduces cost.

In addition, in the invention of claim 2, the thin metal plate sandwiched between the tapered surfaces of the bidirectional conical clutch is
Since it becomes the contact surface between the male member and the female member of the bidirectional conical clutch, it is not necessary to smooth the tapered surface to which the thin plate is attached by lapping or the like. In addition, when this thin metal plate is pressed by the male member and the female member of the bidirectional conical clutch, it projects into the groove provided in either the male member or the female member and does not disengage from the member having the groove. A bidirectional conical clutch that is easy to lock thin plates and has durability.

Further, in the parking management apparatus according to the third aspect of the invention, when the closing operation of the lock plate is completed, the lock plate stops in a state in which a gap is formed between the lock plate and the fixing member, so that a person can step on his / her foot. , Even if a playing child catches his / her hand, he / she will not be directly connected to a serious accident causing serious injury.

In addition, in the invention of claim 4, the final gear, which is the final portion of the gear train, is fixed to the main shaft that fixes the lock plate, and the final gear is meshed with the lock plate at the end of the closing operation. Since the notch is provided so that it can be disengaged, a gap is created when the mesh is disengaged. Therefore, even if the motor is overrun, a gap is surely generated, which further improves safety.

Further, in the parking management system according to the fifth aspect of the present invention, at least one of the meshes of the gears is disengaged immediately before the lock plate is completely closed, so that the power of the motor is not transmitted to the lock plate. Even if the detection means for detecting the movement fails or the circuit for stopping the motor fails and the motor overruns, the lock plate does not bite into the fixed portion. For this reason, free parking that occurs when this bite phenomenon does not occur.
Also, if this bite phenomenon occurs when a person is caught in the foot or a child playing is caught in the hand, there is a risk of fatal accidents beyond the serious injury, but the closing action of the lock plate Since it is physically disengaged at the end, there is no such risk.

In addition, in the invention of claim 6, since the final gear which is the final portion of the gear train is fixed to the main shaft for fixing the lock plate, and the final gear is provided with the notch, the notch is provided. The movement angle of the final gear having the angle becomes the movement angle of the lock plate. As a result, the interlocking adjustment between the movement of the lock plate and the disengagement can be extremely easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of an embodiment of the present invention.

FIG. 2 is a plan view showing a part of a lock plate drive mechanism used in the embodiment of the present invention in a sectional state.

FIG. 3 is a perspective view of an essential part of a step portion used in the embodiment of the present invention.

FIG. 4 is a sectional view of an essential part of a bidirectional conical clutch used in an embodiment of the present invention.

FIG. 5 is a cross-sectional view of essential parts of a step part used in the embodiment of the present invention.

FIG. 6 is a perspective view of main parts of a bidirectional conical clutch used in an embodiment of the present invention, (A) showing a male member, (B) showing a thin plate, and (C) showing a female member. .

FIG. 7 is a diagram for explaining the basic configuration of a conventional parking management device.

FIG. 8 is a diagram for explaining a conventional lock plate drive mechanism.

FIG. 9 is a cross-sectional view of a conventional step portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Lock plate 11 3rd rotating shaft 11a Conical body (male member) 12 Tapered surface 13 5th gear (female member) 16 Tapered surface 17 Thin plate 18 Groove

Claims (6)

[Claims] 1. A parking management device comprising a lock plate drive mechanism for operating a lock plate that can be opened and closed by the power of a motor, wherein a gear train is interposed between the motor and the lock plate, and the gear train is provided. A bidirectional conical clutch consisting of a male member having a conical tapered surface on the outer surface and a female member having this conical male member fitted on the inner surface having a conical tapered surface is provided in the row, and the opening direction acting on the lock plate is provided. And a parking management device characterized by disconnecting transmission of overload in the closing direction. 2. A groove is provided on one tapered surface of one of a male member and a female member of the bidirectional conical clutch, a thin metal plate is sandwiched between the tapered surfaces, and the thin plate is pressed by both members to form a groove in the groove. The parking management device according to claim 1, wherein a part of the thin plate is projected. 3. A parking management device comprising a lock plate drive mechanism that operates a lock plate that can be opened and closed by the power of a motor, wherein a fixing member that holds the lock plate and the lock when the closing operation of the lock plate is completed. A parking management device characterized in that a gap is provided between the plate and the plate. 4. A gear train is interposed between the motor and the lock plate, and a final gear, which is a final portion of the gear train, is fixed to a main shaft that fixes the lock plate, and the final gear is 4. The parking management device according to claim 3, further comprising a cutout portion that disengages the lock plate at the end of the closing operation of the lock plate. 5. A parking management device comprising a lock plate drive mechanism that operates a lock plate that can be opened and closed by the power of a motor, wherein a gear train is interposed between the motor and the lock plate, and the gear train is provided. On at least one of the gears in the row,
A parking management device comprising a cutout portion for disengaging the lock plate at the end of the closing operation of the lock plate. 6. The parking according to claim 5, wherein a final gear that is a final part of the gear train is fixed to a main shaft that fixes the lock plate, and the notch is provided in the final gear. Management device.