JP4570480B2 - Flapper type parking device - Google Patents

Description

  The present invention relates to a flapper type parking apparatus suitable for use in a pay parking lot or the like.

  With regard to the flapper type parking device that swings the flapper up and down, as seen in the “vehicle start prevention plate” described in Patent Document 1, when the vehicle is confirmed, the drive motor is driven, and an appropriate number of rotations is achieved by the speed reducer. When the rotating screw rod is rotated by the transmission mechanism, the movable nut moves forward along the screw rod, and the link member is pushed up to rotate the start prevention plate about the shaft to stand up. There is something configured as follows.

Further, in the “parking lot apparatus” described in Patent Document 2, in a parking apparatus of a type in which a shielding plate is erected between front and rear wheels, it is not possible to get over the standing shielding plate without paying the fee. There is a description about the parking lot device. Specifically, when leaving the car without paying the fee, the length of the shielding plate is shortened so that the wheel cannot get over the standing shielding plate and the vehicle can not get out. Take measures to interpose a buffer spring in the transmission part from the drive part so that the drive part of the parking device will not be damaged when it is made to catch on the bottom of the car body and it tries to come out forcibly Yes. Further, when trying to get out of the car without paying out, the sensor detects the impact force or vibration acting on the standing shielding plate with a sensor to detect fraud.
No.59-118372 (No. 61-36050) JP 2002-387553 A

  However, since the “vehicle start prevention device” described in Patent Document 1 is simply configured to push up or lower the start prevention plate, there is no problem during normal use. If an external force more than necessary is applied, there is a problem that it breaks.For example, an illegal act of forcibly pushing and turning the start prevention plate without leaving the parking fee and taking the vehicle out is performed. However, there was a problem that this fraud could not be detected.

  On the other hand, the “parking lot device” described in the above-mentioned patent document 2 shields the vehicle so that the vehicle cannot get out of the standing shield plate when the vehicle goes out without paying the fee. The drive unit is designed so that the length of the plate is shortened so that the shielding plate is caught on the bottom of the vehicle body, and the drive unit of the parking device is not damaged when trying to forcibly get out of the car. Countermeasures are taken by interposing a buffer spring in the transmission part. However, the parts that are protected from damage, etc., are the main part of the drive, and other parts, such as the shielding plate, have a risk of being damaged by impact or load when the car escapes. In order not to break, it is necessary to have a considerable strength, and there is a problem in terms of cost. Furthermore, the vehicle itself is damaged, and there is a problem that the subsequent processing such as restoration of the apparatus and repair of the vehicle is very expensive and troublesome. In addition, fraud such as a mechanism to prevent the flapper from being lifted by an external force in advance when parking a car, and making it easier to leave the car has been performed.

  Therefore, the technical problem of the present invention is to avoid troubles such as breakage of the drive unit and other parts when an excessive external force is applied to the flapper, and when there is an illegal escape action described above, It is to provide a flapper type parking device devised so that the action can be detected.

(1) In order to solve the above technical problem, the means according to claim 1 of the present invention is a link attached to a moving body by reciprocating a moving body screwed on a screw shaft that rotates. A flapper type parking apparatus configured to swing a flapper up and down in a vertical direction or a vertical direction via a mechanism, wherein the moving body is screwed on a screw shaft that is driven to rotate and a nut that reciprocates. And a slider that can reciprocate following the nut body while maintaining a constant interval by an intervening compression spring, and can operate the link mechanism according to this reciprocation to turn the flapper up and down. The moving body is provided with a moving body sensor for detecting the relative positional relationship between the nut body and the slider. A slider forward movement detection sensor for detecting the forward movement of the slider is provided, and when the movable body moves forward, the forward movement of the slider is detected by the slider forward movement detection sensor, and the nut is detected by the movable body sensor. When it is detected that the positional relationship between the body and the slider has changed from the normal first positional relationship to the second positional relationship in which the nut body compresses the compression spring and the interval is reduced, the screw While the power for driving the shaft is stopped, the slider forward movement detection sensor does not detect the forward movement of the slider, and the moving body sensor changes from the first positional relationship to the second positional relationship. Is detected, the above power is stopped, the reverse rotation and forward rotation of the power are repeated, and the flapper is swung up or down. It is characterized in that it is configured to perform any fraud prevention operation.

(2) According to a second aspect of the present invention, when the flapper is raised by the forward movement of the moving body, the positional relationship between the nut body and the slider is detected by the moving body sensor. When it is detected that the second positional relationship has changed to the first positional relationship, an alarm signal is generated.

(3) According to a third aspect of the present invention, a home position sensor that detects the presence or absence of the nut body is provided at the movement start position of the nut body, and in the process of turning the flapper from the raised state to the prone direction. The home position sensor detects the nut body and the moving body sensor detects the positional relationship between the nut body and the slider to detect both the second positional relationship and the first positional relationship. It is characterized in that an alarm signal is issued when not.

  According to the means according to claim 1 described in (1) above, when it is detected that the vehicle has entered the parking space, the power is driven to rotate the screw shaft, and the movement screwed onto the screw shaft. Move the body in the forward direction from the movement start position, rotate the flapper linked to the moving body from the prone state to the raised state according to the movement of the moving body, and stop the power when the flapper reaches the raised position Then, the vehicle that has entered the vehicle is kept in the parking area as it is.

  Further, the above moving body will be described in detail. When the flapper rotates to the final end in the raised state, that is, when the slider stops at the end of the forward movement, the relative positional relationship with the nut body that continues to be driven is The second positional relationship is compressed from the normal first positional relationship to the closer state, and the moving body sensor detects the positional relationship and stops driving the nut body.

  At that time, if the slider reciprocation detection sensor detects the movement of the slider, it stops as a normal start of the flapper, but if the slider reciprocation detection sensor does not detect the slider movement, that is, the flapper starting direction If the mobile sensor detects that the flapper does not perform a normal startup action due to some overload (mischief or fraud) that opposes the rotation of the motor, this is considered abnormal and the power is stopped While performing, the power is reversed or an abnormal (warning) signal is issued. As a result, it is possible to determine the normal operation and the abnormal operation and perform the processing, and to prevent the flapper device from being damaged or illegal.

  According to the means according to claim 2 described in the above (2), when trying to escape the parked vehicle illegally when the flapper is raised, the flapper is pushed by the movement of the vehicle and further As a result, since the positional relationship between the nut body and the slider in the moving body sensor is returned from the immediately preceding second positional relationship to the first positional relationship, the change is detected and an alarm signal is transmitted. Based on the signal, it is possible to generate a warning sound and take other measures.

  According to the means according to claim 3 described in (3) above, when the movable body is returned to the start position (home position) and the flapper is rotated in the down direction, the presence of the nut body is detected by the home position sensor. At the same time, the moving body sensor detects the positional relationship between the slider and the nut body, and if the moving body sensor changes from the second positional relationship to the first positional relationship, normal operation is performed. If both the second positional relationship with the nut body and the detection of the first positional relation are solved (the slider does not move and only the nut body returns to the movement start position), an alarm signal is generated. Since it did in this way, the trouble that a flapper contacts the bottom part of a vehicle etc., for example, and the flapper's raising / lowering operation | movement is repeated can be eliminated.

  As described above, according to the flapper type parking apparatus according to the present invention, when any overload is applied that does not rotate the flapper in the starting direction when the flapper rotates in the starting direction, the power is immediately stopped. It is possible to prevent damage to the drive unit and other parts due to excessive rotation, and when the flapper is overloaded to prevent the flapper from rotating in the starting direction due to mischief or misconduct, and the flapper in the starting state is not When a force is applied to the vehicle to turn down, it can be judged as abnormal and an alarm signal can be issued, which can prevent the flapper from being damaged in an unmanned parking lot, and to prevent unauthorized use. In addition, the entire apparatus is economically configured with a relatively small number of parts.

  The embodiment of the flapper type parking apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the whole of the present invention, and FIG. 2 is an installation example of the present invention implemented in a parking space. In the figure, reference numeral 1 denotes a flapper. Reference numeral 10 denotes a drive unit for rotating the flapper 1 up and down, 10T denotes a cover body thereof, and 11A is rotated by the drive unit 10. The tip of the flapper shaft (described later), 1K is a mounting flange plate provided at one end of the flapper 1, 12 is a turning lever, and the tip 11A of the flapper shaft is shown in FIG. The root end portion of the rotation lever 12 is fixed, and the root end portion of the flange plate 1K is rotatably attached to the tip portion 11A inserted through the root end portion. Of the tip of the flange plate 1K The inter is rotatably mounted with the mounting shaft 12A.

  Accordingly, when the vehicle detector 54 (FIG. 12) detects that the vehicle TM has entered the parking space, the tip portion 11A rotates counterclockwise in FIG. 1 in accordance with the rotation of the flapper shaft, and the rotation lever. Since the flapper 1 is turned up and down as shown in FIG. 2 to prevent the vehicle TM from being released, the checkout machine 55 (FIG. 12) is used. When the parking fee is settled, the flapper shaft is rotated in the clockwise direction to return the flapper 1 to the prone state shown in FIG. 1, so that the exit of the vehicle TM is not blocked by the flapper 1. Can be done smoothly. In FIG. 2, TK is a car stop.

  3 is a perspective view illustrating the overall structure of the drive unit 10, FIG. 4 is a plan view thereof, FIG. 5 is a central cross-sectional view of FIG. 4, and the flapper 1 is shown in FIG. The structure of the drive part 10 in the case of being in a lying state is shown.

  In these drawings, 13 is a machine plate for mounting the entire drive unit 10, 13A and 13B are left and right frame plates provided opposite to both ends of the machine plate 13, and 13C and 13D are arranged on the machine plate 13 side by side. The support plate, 11 is the flapper shaft that is rotatably mounted between the support plates 13C and 13D, 13X is a sensor mounting base provided on one side of the machine plate 13, and 18 is the left and right frame plates 13A and 13B. A drive rotary shaft that is rotatively installed between the two ends of the drive rotary shaft 18, and one end side of the drive rotary shaft 18 (about half of the left side in the drawing) is a screw shaft provided with a screw portion 19 on the peripheral surface. The drive rotation shaft 18 is called a screw shaft.

  14 is a drive motor, 15 is a speed reducer, 16 is a drive gear attached to the drive shaft of the motor 14, and this drive gear 16 meshes with the interlocking gear 17 attached to the outer end 18A of the screw shaft 18, The rotation of the motor 14 is transmitted to the screw shaft 18.

  Reference numeral 20 denotes a nut body screwed on the screw shaft 18 (specifically, the screw portion 19), 20T denotes a cylindrical body portion provided continuously to the nut body 20, and 20X denotes an inner side of the end portion of the cylindrical body portion 20T. A sleeve 21 is a slider having a substantially box structure that is slidably mounted on the peripheral surface of the cylindrical portion 20T. As the screw shaft 18 rotates forward and backward, the slider 21 is pulled by the nut body 20 and moves in the lateral direction in the drawing. The nut body 20 and the slider 21 constitute a “moving body”.

  21A is a spring chamber of the slider 21, and a compression plate 21T is attached to the end of the spring chamber 21A whose upper surface is open, and the screw shaft 18 is inserted through the center of the compression plate 21T. Reference numeral 24 denotes a pressing plate mounted on the peripheral surface of the screw shaft 18 that is inserted through the spring chamber 21A. A compression spring 22 is wound around the screw shaft 18 between the pressing plate 24 and the compression plate 21T. In FIG. 3, reference numeral 21X denotes a guide long hole of the pressing plate 24 that opens laterally on the side surface of the spring chamber 21A. 4 and 5, reference numeral 23 denotes a buffer spring provided at the end of the screw shaft 18.

  In the figure, 29 and 29 are operating link rods whose root ends are pivotally attached to the side of the slider 21 using shafts 28 and 28, and 32 and 32 are fixed to the flapper shaft 11 at the root ends. An interlocking link rod whose tip side is connected to the tip of each of the operating link rods 29, 29 using the connecting shafts 31, 31, and by the link rods 29, 29 and 32, 32 interlocking with these operations. A link mechanism is configured. Further, 30 and 30 are traction springs stretched between the locking pins 29A and 29A provided on the operating link rods 29 and 29 and the mounting pins 13T and 13T provided on the one frame plate 13B. The slider 21 is pulled forward, and the link mechanism is always operated in the direction in which the flapper 1 stands.

  Next, 20H is a sensor mounting plate continuously provided on the upper surface of the nut body 20, and an SLM is mounted on the mounting plate 20H, thereby detecting a relative positional relationship between the nut body 20 and the slider 21. Indicates a sensor. Further, the sensor mounting base 13X described above includes a slider forward movement detection sensor SLP for detecting the forward movement of the slider 21 and a detection position in which the home position of the nut body 20 is provided on the sensor mounting plate 20H of the nut body 20. A home position sensor SHP that detects by detecting the piece 20K is attached.

  Reference numeral 25 denotes a latch whose substantially central portion is attached to the upper surface of the slider 21 by using a mounting shaft 26 so as to be able to rotate horizontally. The latch 25 is provided at the end of the latch 25 and the compression plate 21T of the slider 21. Between the engaging piece 21 </ b> W (FIG. 3) continuously provided on the side portion, a pulling force for always rotating the entire hook 25 around the attachment shaft 26 in FIG. 4 in the clockwise direction is applied. A tension spring 27 is stretched.

  When the relative positional relationship between the nut body 20 and the slider 21 is a normal first positional relationship as shown in FIG. 4, for example, the latch 25 has a switch piece of the moving body sensor SLM. The convex portion 25A that presses and maintains the OFF state, and the positional relationship between the two shifts to the second positional relationship by narrowing the interval (compressing the compression spring 22) as shown in FIGS. 6 and 7, for example. Then, the slider 21 is locked together when the nut body 20 is moved back by being locked to the recess 25B in which the switch piece is dropped and turned on and the locking pin 26X protruding on the sensor mounting plate 20H. A hook portion 25C that moves backward is provided. Reference numeral 26Y denotes a stopper pin that stops the pulling rotation of the latch 25 by the tension spring 27 halfway.

  4 and 5 described above, the home position sensor SHP is ON, the slider forward movement detection sensor SLP is ON, and the moving body sensor SLM is OFF, so that the vehicle TM can be stored. In this state, when the vehicle detector 54 shown in FIG. 12 detects that the vehicle TM has entered the parking space, the motor 14 is driven to rotate the screw shaft 18 in the forward direction, and the movement comprising the nut body 20 and the slider 21. Move the body in the right direction on the drawing. In the following description, each sensor simply describes only SHP, SLP, SLM and its symbol.

  The slider 21 is pushed by the nut body 20 through the compression spring 22 to move to the position of the plan view shown in FIG. 6 and the cross-sectional view shown in FIG. 7, and the flapper shaft 11 is moved through the link mechanism. The flapper 1 is rotated in the standing direction by rotating in the clockwise direction in the drawing. In this state, the relative positional relationship between the nut body 20 and the slider 21 is changed from the normal first positional relationship shown in FIG. It changes to the 2nd positional relationship shown, and it becomes impossible to maintain the 1st positional relationship. As a result, the switch piece of the SLM falls into the recess 25B of the latch 25, SLM: ON, SHP: OFF, SLP: OFF, and the motor 14 stops with the flapper 1 standing up, and FIG. As shown, the vehicle TM is stopped.

  The plan view shown in FIG. 8 and the central cross-sectional view of FIG. 9 show the state when the vehicle TM is illegally evacuated (shipped), that is, the vehicle TM shown in FIG. FIG. 2 shows a state where the flapper 1 is prevented from leaving when it is going to move rightward in the drawing. The position of the flapper 1 shown by the solid line in FIG. 9 is the position where the flapper 1 is pushed in the right direction by being hooked on the bottom of the vehicle TM to be forcibly released.

  When the flapper 1 moves from the position of the imaginary line in FIG. 9 to the position of the solid line, the flapper shaft 11 slightly moves in the right direction in the drawing while compressing the slider 21 via the link mechanism and the buffer spring 23. As a result, the relative positional relationship between the nut body 20 and the slider 21 is returned to the normal first positional relationship shown in FIG. 6 again, and the SLM is again pushed by the convex portion 25A and turned off. Therefore, a warning signal for operating the alarm indicator 56 (FIG. 12) is transmitted by this switching to OFF.

  In the plan view shown in FIG. 10, based on the completion of the payment of the parking fee, the motor 14 reverses and the screw shaft 18 rotates in the reverse direction, and the moving body composed of the nut body 20 and the slider 21 moves backward in the left direction in the drawing. FIG. 6 is a plan view illustrating a case where the flapper 1 is blocked for some reason when attempting to return the flapper 1 to the lying state via the link mechanism.

  As shown in the figure, the SHP detects the home position of the nut body 20, but the SLP does not detect the slider 21, and the SLM does not return from the second positional relationship to the first positional relationship, and the detection is solved. It becomes a state. As a result, it is determined that the slider 21 does not move and only the nut body 20 has returned to the start position, and an alarm signal is generated. Therefore, for example, it is possible to detect troubles such as the flapper 1 being caught on the bottom of the vehicle TM and not returning to the prone state, and when such trouble occurs, the motor 14 is turned on based on the alarm signal. The trouble is solved by performing forward / reverse rotation and repeating the up-and-down rotation of the flapper 1.

  FIG. 11 shows an embodiment relating to the stopper for moving body stopping. In the embodiment shown in each of the above-described drawings, the movement of the moving body (slider 21) is stopped using the buffer spring 23. FIG. However, in this embodiment, the movement of the slider 21 is stopped by providing stoppers 40, 40 for stopping the link mechanism.

  FIG. 12 is a block diagram for explaining the electrical configuration of the present invention. Reference numerals 50 and 51 denote a CPU and a memory constituting a control unit. Reference numeral 53 denotes an interface connected between the CPU 50 and the memory 51 via a bus 52. In the interface 53, in addition to the sensors SHP, SLP, SLM and the motor 14 described above, a vehicle detector 54 that detects the vehicle TM that has entered the parking space and parked, and a parking fee is calculated from the parking time. When the parking fee has been settled, a signal is sent to the motor 14 to rotate the flapper 1 in a lying state, and the billing machine 55 that enables the vehicle TM to be delivered, and when the alarm signal is issued. Alarm indicators 56 are connected, and each is configured to be controlled and operated under the monitoring of a program stored in the memory 51.

Next, the operation of the present invention described above will be described with reference to the flowcharts shown in FIGS.
FIG. 13 is a flowchart for explaining a procedure when the vehicle TM is parked in the parking space equipped with the present invention, that is, a procedure when the flapper 1 is raised (at the time of standing), and the vehicle detector 54 in step S1. When the vehicle TM parked is detected, the motor 14 rotates forward in step S2 to move the moving body including the nut body 20 and the slider 21 from the state shown in FIG. 4 to FIG. 6, and whether or not the SLM is turned on in step S3. That is, it is determined whether or not the positional relationship between the nut body 20 and the slider 21 has changed from the normal first positional relationship to the second positional relationship, and if turned ON, the process proceeds to step S4 and the motor 14 is stopped. To do.

  Next, the process proceeds to step S5, and it is determined whether the SLP is in an ON state. If NO, that is, if it is detected that the slider 21 has been moved, it is recognized that the flapper 1 has stood up. If it is determined that the state remains, the slider 21 has not moved (the flapper 1 has not stood up). Therefore, the process proceeds to step S6 and the motor 14 is reversed to move the moving body toward the start position. When the SHP detects the home position in step S7, the motor 14 is stopped in step S8, the number of these reverse rotation operations is counted in step S9, and the process returns to step S2.

  If this process is repeated N times consecutively as a result of the counting in step S9, the process proceeds to step S10 where an announcement such as “the vehicle height is inappropriate”, guidance display, error display, buzzer transmission, etc. To stop abnormally at step S11.

  Next, FIG. 14 is a flowchart for explaining the procedure for lowering the flapper 1 in the down position, that is, the procedure for unloading the vehicle TM. In step S12, the parking fee is settled by the settlement machine 55. When the motor 14 reverses in step S13 and SHP detects that the nut body 20 has returned to the home position in step S14, the motor 14 is stopped in step S15, and it is determined whether or not the SLM is in the ON state in step S16. In the case of NO, that is, when it is detected that the positional relationship between the nut body 20 and the slider 21 has returned to the normal first positional relationship, the lowering process of the flapper 1 is completed and the vehicle TM is released. It becomes possible.

  However, if it is determined in step S16 that the SLM is in the ON state (YES), it is determined that the slider 21 has not returned to the start position, that is, the state shown in FIG. 10, and the slider is determined in step S17. The number of times that the state 21 does not return is counted, and then the process proceeds to step S19 to rotate the motor 14 forward and move the nut body 20 in the forward direction. Due to the forward movement of the nut body 20, the SLM is turned off (first positional relationship) in step S20, and then the motor 14 is stopped in step S22 when the SLM is turned on (second positional relationship) in step S21. Then, the processing after step S13 is repeated.

  If this process is repeated N times continuously as a result of the counting in step S17, the process proceeds to step S18 where an announcement such as “the vehicle height is inappropriate”, a guidance display, or an error display, Make a buzzer call and stop abnormally.

  FIG. 15 is a flowchart for explaining a procedure in the case where it is detected that the parked vehicle TM is illegally exited (shipped), where SHP is OFF in step S23, SLP is OFF in step S24, and SLM in step S25. Is turned on, that is, in the state where the flapper 1 shown in FIGS. 6 and 7 is standing up, when a parking fee settled signal, that is, a descending signal (low signal) of the flapper 1 is received from the settlement machine 55, step S29. Then, the motor 14 rotates in the reverse direction, and the flapper 1 is lowered to the down position, so that the vehicle TM can be delivered. However, if the SLM is turned OFF in step S27 without receiving a descending signal in step S26, that is, if the flapper 1 is turned to the lying state, this is determined as an illegal occurrence, and in step S28. By sending a warning signal, inform the staff of the occurrence of fraud.

The perspective view which showed the external appearance of the flapper type parking apparatus which concerns on this invention. Explanatory drawing explaining the usage example of this invention. The perspective view explaining the internal structure of this invention. The top view in case the flapper in this invention exists in a lying state. FIG. 5 is a central cross-sectional view of FIG. 4. The top view in the state where the flapper in the present invention stood up. FIG. 7 is a central cross-sectional view of FIG. 6. The top view in case the flapper in this invention seems to be pushed down in a lying state illegally. The center cross-sectional view of FIG. The top view of the state in which the flapper in this invention was pushed down in a lying state illegally. The top view of the principal part which showed the Example regarding a stopper. The block diagram explaining the electrical constitution of the present invention. The flowchart explaining the procedure which a flapper raises to a standing state. The flowchart explaining the procedure which a flapper descends to a prone state. The flowchart explaining the procedure in which a flapper is pushed down illegally and it becomes a lying state.

Explanation of symbols

TM vehicle
1 Flapper
11 Flapper shaft
10 Drive unit
14 Motor
18 Screw shaft
19 Screw part
20 Nut body
21 Slider
22 Compression spring
23 Buffer spring
SHP home position sensor
SLP slider forward movement detection sensor
SLM mobile sensor
25 Kakegoko
54 Vehicle detector
55 Payment machine
56 Alarm indicator

Claims (3)

A flapper type parking device configured to reciprocate and move a moving body screwed on a rotating screw shaft to drive the flapper up and down in the up and down direction via a link mechanism attached to the moving body. There,
The above-mentioned moving body is reciprocated following the nut body while maintaining a constant interval by a nut body screwed on a screw shaft that is driven to rotate and reciprocatingly moved, and this reciprocating movement. The flap mechanism is operated by the slider according to
The moving body is provided with a moving body sensor for detecting a relative positional relationship between the nut body and the slider, and a slider for detecting the forward movement of the slider on the reciprocating movement path of the slider. While providing a forward movement detection sensor,
During the forward movement of the moving body, the forward movement of the slider is detected by the slider forward movement detection sensor, and the positional relationship between the nut body and the slider is changed from the normal first positional relation to the nut by the moving body sensor. When it is detected that the body has changed to the second positional relationship in which the distance between the compression springs is reduced, the power for driving the screw shaft is stopped, while the slider forward movement detection sensor is If the moving body sensor detects a change from the first positional relationship to the second positional relationship, the power is stopped or the power is reversed. A flap that is configured to perform any anti-tampering operation that repeats normal rotation and repeats the flapper up-and-down rotation or generates an abnormal signal. Wrapper-type parking system.   When the flapper is raised by the forward movement of the moving body, the detection of the positional relationship between the nut body and the slider by the moving body sensor changes from the second positional relationship to the first positional relationship. 2. The flapper type parking apparatus according to claim 1, wherein a warning signal is generated when it is detected.   A home position sensor for detecting the presence or absence of the nut body is provided at the movement start position of the nut body, and the home position sensor detects the nut body in the turning process from the raised state of the flapper to the prone direction, and The detection of the positional relationship between the nut body and the slider by the moving body sensor is configured to issue an alarm signal when neither the second positional relationship nor the first positional relationship is detected. The flapper type parking apparatus according to claim 1 or 2, characterized in that

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