Parking device with locking plate

Abstract

To provide a parking device with a locking plate that can accurately capture the situation where the locking plate is rising even though the locking plate is being lowered by a motor, and can easily and reliably determine whether or not a gear head of the motor is damaged.SOLUTION: A parking device 100 with a locking plate comprises a motor 11 that operates to lower a locking plate 21 and a damage determination unit 50b that determines whether or not a gear head of the motor 11 is damaged on the basis of an occurrence of an elevation of the locking plate 21 during a lowering action of the locking plate 21 by the motor 11.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a lock plate type parking device for managing parking spaces using a lock plate. [Background technology]

[0002] For example, there is known a lock plate that adjusts the opening and closing speed or the torque of a motor when opening and closing the lock plate (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-78968 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned Patent Document 1 does not necessarily address the possibility that the locking plate may repeatedly rise and fall during the lowering operation of the locking plate, thereby hitting a parked vehicle.

[0005] The present invention has been made in consideration of the above-mentioned points, and aims to provide a lock plate type parking device that can easily and reliably determine whether the motor gear head is damaged by accurately detecting a situation in which the lock plate is rising even though the lock plate is being lowered by the motor. [Means for solving the problem]

[0006] To achieve the above objective, a lock plate type parking device is provided with a motor that acts in a direction to lower the lock plate, and a damage determination unit that determines whether or not the gear head of the motor is damaged based on the occurrence of the lock plate rising when the motor acts to lower the lock plate.

[0007] In the above-mentioned lock plate type parking device, by accurately detecting a situation in which the lock plate is rising even though the lock plate is being lowered by the motor, it is possible to easily and reliably determine whether or not the motor gear head is damaged.

[0008] In a specific aspect of the present invention, the damage determination unit determines whether or not the gear head is damaged based on the amount of lift and the number of lifts of the lock plate when the motor lowers the lock plate. In this case, the damage determination unit can accurately determine whether or not the gear head of the motor is damaged based on the lift mode of the lock plate.

[0009] In another aspect of the present invention, the damage determination unit determines whether or not the gear head is damaged based on whether or not a retry has occurred when the lock plate rises. In this case, the determination can be made according to the circumstances under which the rise occurs.

[0010] In yet another aspect of the present invention, an encoder is provided that measures the amount of rotation of the lock plate, and the damage determination unit determines whether or not the gear head is damaged based on the measurement results of the encoder. In this case, the operation of the lock plate can be accurately determined from the measurement results of the encoder.

[0011] In yet another aspect of the present invention, a connection portion that connects the lock plate and the motor and an elastic member that acts on the connection portion in a direction to raise the lock plate are provided, and the motor exerts an action on the lock plate that resists the action of the elastic member on the lock plate to lower the lock plate. In this case, after connecting the lock plate and the motor at the connection portion, the action of the elastic member in the direction to raise the lock plate and the action of the motor in the direction to lower the lock plate can be used to cause the lock plate to perform a desired operation.

[0012] In yet another aspect of the present invention, the connection portion includes a motor-side rotating shaft that receives an action from the motor, a lock plate-side rotating shaft that raises and lowers the lock plate by rotation, and a connecting member that connects the motor-side rotating shaft and the lock plate-side rotating shaft. In this case, the motor-side rotating shaft, the lock plate-side rotating shaft, and the connecting member cooperate with each other in the connection portion to accurately transmit various actions.

[0013] In still another aspect of the present invention, a notification unit is provided that notifies the outside of the device of the result of the determination by the damage determination unit. In this case, the presence or absence of damage to the gear head of the motor can be indicated to the outside of the device. [Brief description of the drawings]

[0014] [Figure 1] 1 is a conceptual diagram showing an example of a parking lot in which an embodiment of a lock plate type parking device is installed. FIG. [Diagram 2] FIG. 1 is a conceptual perspective view for explaining an overview of a lock plate type parking device. [Diagram 3] FIG. 1A is a conceptual plan view for explaining the connection points between the motor side and the lock plate side, and FIG. 1B is a conceptual side view for explaining the configuration on the motor side. [Figure 4] 1A to 1E are conceptual diagrams for explaining an overview of the occurrence of an abnormality caused by a motor. [Diagram 5] 1A to 1C are conceptual side views for explaining one configuration example of an encoder that measures the amount of rotation of a motor-side rotating shaft. [Figure 6] 1A to 1D are diagrams illustrating an example of a configuration of a connecting member and its role (connecting state). [Figure 7] FIG. 1 is a block diagram for explaining one configuration example of a lock plate type parking device. [Figure 8] 11(A) to 11(E) are conceptual diagrams for explaining an example of the lifting operation of the lock plate during normal operation of the lock plate type parking device. [Figure 9] 11(A) to 11(D) are conceptual diagrams for explaining an example of the lowering operation of the lock plate during normal operation of the lock plate type parking device. [Figure 10] 6A to 6E are conceptual diagrams for explaining how the lock plate rises when a downward force is applied to the lock plate. [Figure 11]4 is a flowchart for explaining a series of operations in a lock plate type parking device. [Figure 12] FIG. 1 is a conceptual diagram for explaining an overview of a lock plate type parking device. [Figure 13] (A) to (D) are conceptual diagrams for explaining an example of the operation when a lock plate type parking device is disconnected, and (E) to (H) are conceptual diagrams for explaining an example of the operation when the lock plate of the lock plate type parking device is stepped on. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An example of a lock plate type parking device according to an embodiment will be described below with reference to FIG. 1 and the like. FIG. 1 is a conceptual diagram showing an example of the state of a parking lot PA in which a lock plate type parking device 100 according to this embodiment is installed. In the illustrated example, a lock plate type parking device 100 is installed in each vehicle compartment CA provided in the parking lot PA, and each lock plate type parking device 100 is connected to a payment machine PM installed in the parking lot PA. In the illustrated example, the payment machine PM is connected (for example, wirelessly connected) to a higher-level device CM that functions as a central management unit that manages multiple parking lots in an integrated manner, and the parking lot PA is managed under the control of the higher-level device CM. It can be considered that the above includes each lock plate type parking device 100 installed in the parking lot PA, the payment machine PM, and the higher-level device CM, and further, a parking lot management system 500 for managing the parking lot PA. It can also be considered that the payment machine PM and the higher-level device CM, or even a part of them, are included in the lock plate type parking device.

[0016] Hereinafter, the specific configuration of the lock plate type parking device 100 will be described with reference to FIG. 2 and the like. FIG. 2 is a conceptual perspective view for explaining the outline of the lock plate type parking device 100. As shown in the figure, the lock plate type parking device 100 of this embodiment includes a motor side device 10 constituting the motor side as a drive mechanism, a lock plate side device 20 constituting the lock plate side that rises and falls by the motor drive, and a control device 50 that controls the lock plate operation by the motor drive. In addition to the control device 50, the motor side device 10 and a part of the lock plate side device 20 are stored in a housing CS and are in a protected state. In addition to the above, the lock plate type parking device 100 also includes a vehicle detection sensor VD for detecting a vehicle entering from the direction of the arrow AA1, and functions as a parking device by controlling the operation of the lock plate while detecting the entry and exit of the vehicle. In particular, in this embodiment, by detecting each and every movement of the lock plate up and down driven by the motor, it is possible to detect early a situation in which, for example, when the lock plate is being operated, the lock plate is actually being raised even though the motor is actually driving it down.

[0017] A specific configuration example of the lock plate type parking device 100 will be described below with reference to Fig. 2 as well as Fig. 3(A) and Fig. 3(B). Fig. 3(A) is a conceptual plan view for explaining the connection points between the motor side and the lock plate side of the lock plate type parking device 100, and Fig. 3(B) is a conceptual side view for explaining the configuration of the motor side.

[0018] First, as shown in FIG. 2, the motor side device 10 includes a motor 11, a link member 12, a motor side rotating shaft 13, a spring 14 which is an elastic member, and an encoder 15. The lock plate side device 20 includes a lock plate 21 and a lock plate side rotating shaft 22. The motor side device 10 and the lock plate side device 20, i.e., the motor side and the lock plate side, are connected by a connecting member LK which is composed of, for example, a pin-shaped member. In addition to the above, the lock plate side device 20 includes a rotation range regulating unit 23 as shown in FIG. 3(B). The rotation range regulating unit 23 determines the limit of the rotational rise of the lock plate 21, and in the illustrated example, is composed of a stopper member which physically holds the lock plate 21 so that the lock plate 21 does not rise (is not allowed to rise) beyond a predetermined angle.

[0019] First, the components of the motor-side device 10 will be described. In the motor-side device 10, the motor 11 rotates to raise and lower the lock plate 21 for locking and unlocking on the lock plate side in accordance with a command from the control device 50. That is, the motor 11 rotates (turns) in both directions around the central axis as the rotation axis, as shown by the arrow DD1 in the figure.

[0020] In the motor-side device 10, the link member 12 is a member for transmitting the rotational drive of the motor 11 while switching it to an operation for raising and lowering on the lock plate side, and in the illustrated example, it is configured by connecting rod-shaped (or plate-shaped) first and second members 12a, 12b and a sector-shaped third member 12c. Among the first member 12a to the third member 12c, the third member 12c, which is the member closest to the lock plate side, is provided with an abutment portion 12t, which is a protruding member for abutting against the motor-side rotating shaft 13. In response to the rotation of the motor 11 in the direction indicated by the arrow DD1 (both directions indicated by the arrows DD1a and DD1b), the third member 12c rotates (pivots) in the direction indicated by the arrow DD2, and at this time, the abutment portion 12t moves in response to this.

[0021] The motor-side rotating shaft 13 is a cylindrical member and rotates around its central axis as its axis of rotation. For example, the motor-side rotating shaft 13 has a contact portion 13t which is a protruding member that contacts the abutment portion 12t. When the contact portion 13t is in contact with the abutment portion 12t, the motor-side rotating shaft 13 receives a force (action) from the third member 12c in a direction to lower the lock plate 21, and rotates accordingly. That is, the abutment portion 12t provided on the third member 12c moves in the direction indicated by the arrow DD2 due to the motor 11, and acts on the contact portion 13t (the force from the motor 11 is applied). In the above case, a force is applied to the contact portion 13t, and by extension, to the motor-side rotating shaft 13 due to the motor 11, in the direction indicated by the arrow AR1 (the direction to lower the lock plate 21). On the other hand, the motor-side rotating shaft 13 is also connected to a spring 14, which will be described later, and receives a force (action) from the spring 14 as well, and rotates accordingly. That is, the spring 14 exerts a force on the motor-side rotating shaft 13 in the direction of the arrow AR2 (the direction in which the lock plate 21 is raised), which is the opposite direction to the arrow AR1. In other words, the motor-side rotating shaft 13 exerts a force from the spring 14, which is an elastic member, on the motor 11 in the direction in which the lock plate 21 is raised. Furthermore, the motor-side rotating shaft 13 is connected to the lock plate-side rotating shaft 22 on the lock plate side via the connecting member LK, and transmits the force (action) in both directions of the arrows AR1 and AR2 to the lock plate-side device 20 as a force (action) from the motor-side device 10. Looking at the above configuration from a different perspective, it can also be said that the motor-side rotating shaft 13, the lock plate-side rotating shaft 22, and the connecting member LK constitute a connection part CN that connects the lock plate side (lock plate 21) and the motor side (motor 11).

[0022] As described above, the spring 14 is connected to the motor-side rotating shaft 13 and is attached so as to apply an elastic force to the motor-side rotating shaft 13 in a direction (the direction of the arrow AR2) that raises the lock plate 21 of the lock plate side device 20. In other words, the elastic force of the spring 14 is always applied to the motor-side rotating shaft 13, and the elastic force of the spring 14 is transmitted to the lock plate side device 20 via the connecting member LK. In addition, in the above case, it can be said that the spring 14, which is an elastic member, acts on the connection part CN in a direction that raises the lock plate 21, and further, the motor 11 exerts an action on the lock plate 21 that resists the action of the spring 14 on the lock plate 21, thereby lowering the lock plate 21.

[0023] The encoder 15 is provided along the circumference of the motor-side rotating shaft 13 to measure the amount of rotation of the motor-side rotating shaft 13. As the encoder 15, various types can be used as long as they can measure the amount of rotation of the motor-side rotating shaft 13 within the required range (angle range), and an example will be described later. Here, by measuring the degree of rotation of the motor-side rotating shaft 13 with the encoder 15, it is possible to check the degree of ascent and descent of the lock plate 21 of the lock plate device 20.

[0024] Next, each part of the lock plate side device 20 will be described. Of the lock plate side device 20, the lock plate 21 is composed of, for example, a metal plate member, and as described above, rotates by the action of the motor side device 10 via the lock plate side rotating shaft 22, i.e., moves up and down. The lock plate side rotating shaft 22 is connected to the lock plate 21, and as described above, is connected to the motor side rotating shaft 13 on the motor side via the connecting member LK, and is acted upon by the motor side device 10.

[0025] Further, here, the rotation range of the link member 12 caused by the motor 11 is larger than the rotation range of the motor-side rotating shaft 13 restricted by the rotation range restricting portion 23. Therefore, for example, as shown in Fig. 3(B), as a result of excessive rotation of the contact portion 12t caused by the motor 11, the contact portion 12t not restricted by the rotation range restricting portion 23 and the contact portion 13t restricted by the rotation range restricting portion 23 may be separated from each other.

[0026] In the above configuration, the control device 50 controls the operation of each part and monitors the operation. That is, it detects whether there is any abnormality in each part. In the above configuration, for example, when the lock plate 21 is lowered, the lock plate 21 may repeatedly rise and fall, thereby striking the parked vehicle. That is, even though the lock plate 21 is lowered by the motor 11, the lock plate 21 may rise and this may be repeated. This is assumed to occur due to various factors, but a typical factor is considered to be damage to the gear head inside the motor 11. When such a phenomenon occurs due to damage to the gear head, the striking of the lock plate 21 may become large, which may damage the vehicle, and if the retry operation is performed, this will be repeated, so a prompt response (repair) is required and early discovery is desirable. In contrast, in this embodiment, in order to determine the occurrence of an abnormality regarding the damage to the gear head of the motor 11 during the lowering operation of the lock plate 21, a damage determination unit 50b is provided in the control device 50. The control device 50 measures the amount of rotation of the motor-side rotating shaft 13 using the encoder 15 while controlling the drive of the motor 11 of the motor-side device 10. At this time, the damage determination unit 50b of the control device 50 captures the rotation status of the motor-side rotating shaft 13 based on this information, and determines whether an abnormality has occurred according to the rotation status. That is, the occurrence of an abnormality is determined based on the measurement of the encoder 15. Note that the retry operation is performed to maintain normal operation even if, for example, an increase due to slight movement of the lock plate 21 within the normal operating range during the lowering operation, i.e., an increase within the error range, or an obstruction of the lowering due to other temporary actions occurs.

[0027] Hereinafter, the occurrence of an abnormality caused by the motor 11 will be outlined with reference to Figs. 4(A) to 4(E).

[0028] FIG. 4(A) is a conceptual diagram showing the state of rotation when the normal motor 11 acts to lower the lock plate 21. As shown in the figure, the motor 11 is assumed to be configured to configure a gear head GH by combining, for example, multiple gears GRa, GRb, etc., and to perform a rotation operation at a moderate speed. In one example of FIG. 4(A), the rotation action (counterclockwise in the figure) of the gear GRb, which is one of the parts that configure the gear head GH, is transmitted to the gear GRa, thereby generating a rotation (clockwise in the figure) that operates (rotates) the link member 12 in the direction indicated by the arrow DD1a. In this case, as shown in FIG. 4(B), the lock plate 21 receives a force acting on the downward side indicated by the arrow DA1a.

[0029] On the other hand, as shown in Fig. 4(C) and Fig. 4(D), if the gears GRa and GRb have a missing MI in some of their teeth (in the illustrated example, the gear GRb has a missing MI in some of its teeth), as shown in Fig. 4(D), there will be a portion where the missing MI causes a mismatch, which may cause the motor 11 to temporarily rotate unintentionally in the direction of the arrow DD1c opposite to the direction shown by the arrow DD1a. In this case, as shown in Fig. 4(E), the lock plate 21 will also be subjected to a force acting in the upward direction shown by the arrow DA1b opposite to the direction of the arrow DA1a.

[0030] In light of the above, the damage determination unit 50b can be configured to estimate in advance the magnitude of the reverse movement that may occur due to, for example, the above-mentioned loss of a gear tooth, and if it is confirmed by detection by the encoder 15 or the like that a corresponding degree of lift of the lock plate 21 occurs when the motor 11 acts to lower the lock plate 21, it can be determined that this is an abnormality on the motor side.

[0031] Hereinafter, measurement of the amount of rotation of motor-side rotating shaft 13 will be described by describing an example of the configuration of encoder 15 with reference to Fig. 5. Fig. 5(A) to Fig. 5(C) are conceptual side views for describing an example of the configuration of encoder 15 that measures the amount of rotation of motor-side rotating shaft 13.

[0032] In the illustrated example, for example, in FIG. 5(A), the encoder 15 is composed of four photosensors PS1 to PS4 and an arc-shaped slit SL. In the illustrated example, the slit SL has a two-phase structure in which the slit position is shifted along the arc. The slit SL is attached to the motor-side rotating shaft 13 shown in FIG. 2 and rotates therewith, while each of the photosensors PS1 to PS4 is fixed at a predetermined position along the arc corresponding to the movement (rotation) of the arc-shaped slit SL in order to capture this movement (rotation). Specifically, among the four, the fourth photosensor PS4 is disposed so that the top end of the slit SL is detected when the slit SL is at the highest position as shown in FIG. 5(A), and the third to first photosensors PS3 to PS1 are disposed in order from the upper side to the lower side. The fourth photosensor PS4, which is located at the uppermost side, is located at the uppermost position of the slit SL when the motor-side rotating shaft 13 reaches the highest position in normal operation by reaching the uppermost limit position of the lock plate 21 due to the restriction of the rotation range restriction part 23, and the second photosensor PS2 is located at the lowermost position of the slit SL at that time. The third photosensor PS3 is located at the uppermost position of the slit SL when the motor-side rotating shaft 13 reaches the lowermost limit position of the lock plate 21 and reaches the lowest position in normal operation, and the first photosensor PS1 is located at the lowermost position of the slit SL at that time.

[0033] Each of the photosensors PS1 to PS4 or some of them can detect and count (read encoder pulses) the blocking and receiving of light from a light source (not shown) by the light blocking and light transmitting sections that are alternately arranged along the arc of the arc-shaped slit SL. This structure makes it possible to calculate the angle of the motor-side rotating shaft 13, i.e., to measure the angle. In particular, the slit SL has a two-phase structure, so that it is possible to detect the direction of rotation, i.e., whether the lock plate 21 is rising or falling, successively at regular intervals.

[0034] In the above case, first, as shown in FIG. 5(A), the fourth photosensor PS4 and the second photosensor PS2, which are located at the uppermost side, detect the upper and lower ends of the arc-shaped slit SL, and it can be detected that the motor-side rotating shaft 13, and further the lock plate 21, are located (present) at the uppermost side. From this state, the slit SL moves (rotates) in the direction indicated by the arrow AR1 with the rotation of the motor-side rotating shaft 13, and as shown in FIG. 5(B), the slit SL moves away from the fourth photosensor PS4 (the slit SL is not detected by the fourth photosensor PS4, so that the slit SL can be detected as moving away from the fourth photosensor PS4). Furthermore, as shown in FIG. 5(C), when the lower end of the slit SL reaches the position of the first photosensor PS1 and the upper end of the slit SL reaches the position of the third photosensor PS3, the lock plate 21 reaches the lower limit position. In this case, it can be confirmed by the detection by the first photosensor PS1 that the slit SL has reached the position shown in FIG. 5(C). As described above, by detecting the movement (rotation) of the slit SL using the first to fourth photosensors PS1 to PS4 as shown in Figures 5(A) to 5(C), the situation regarding the descent of the lock plate 21 can be monitored, and conversely, the situation regarding the ascent of the lock plate 21 can be monitored.

[0035] Here, in the above operation, the angle measurement of the motor side rotating shaft 13, that is, the detection of the rise or fall of the lock plate 21, can be performed in stages based on the count value detected by the light blocking and light receiving through the hole provided in the slit SL, for example, in the encoder 15, as described above. In particular, in this embodiment, the encoder 15 can sequentially detect whether the lock plate 21 is rising or falling for each measurement of the count value by utilizing the phase shift due to the two-phase structure of the slit SL. In other words, if there is no change in the occurrence order of the phase shift, the same direction is maintained for the rise and fall, while if there is a change in the occurrence order, the direction is changed. As a result, it is possible to detect the occurrence of a situation in which, for example, the lock plate is temporarily rising even though the motor side is rotating to lower it.

[0036] The connection state by the connecting member LK will be described below with reference to Fig. 6. As described above, the connection part CN is configured to include the motor side rotating shaft 13 that receives the action from the motor 11, the lock plate side rotating shaft 22 that raises and lowers the lock plate 21 by rotation, and the connecting member LK that connects the motor side rotating shaft 13 and the lock plate side rotating shaft 22. If the connecting member LK breaks at the connection part CN, the connection (coupling) between the motor side and the lock plate side is released.

[0037] First, Fig. 6(A) to Fig. 6(D) are diagrams for explaining one configuration example and the role (connection state) of the connecting member LK, and Fig. 6(A) and Fig. 6(B) show a state before the motor side rotating shaft 13 and the lock plate side rotating shaft 22 are connected. Fig. 6(A) also shows an AA cross-sectional view of the motor side rotating shaft 13 and a BB cross-sectional view of the lock plate side rotating shaft 22, and Fig. 6(B) also shows a CC cross-sectional view of the fitting portion of the motor side rotating shaft 13 and the lock plate side rotating shaft 22. Fig. 6(C) shows a state in which the connecting member LK is inserted in the state of Fig. 6(B) (a state in which the motor side and the lock plate side are connected), and Fig. 6(D) shows a state in which Fig. 6(C) is viewed from a different direction.

[0038] As shown in Fig. 6(A) and Fig. 6(B), the lock plate side rotating shaft 22 is one size larger than the motor side rotating shaft 13 in terms of shaft size (radius), and the end 13e of the motor side rotating shaft 13 can be fitted into the recess 22r provided in the lock plate side rotating shaft 22. That is, for example, the motor side rotating shaft 13 can be fitted into the lock plate side rotating shaft 22 by moving the motor side rotating shaft 13 closer to the lock plate side rotating shaft 22 in the direction indicated by the arrow BB1 in Fig. 6(A) and bringing them into a fitted state as shown in Fig. 6(B). Furthermore, the end 13e of the motor side rotating shaft 13 is provided with a first through hole 13h. Meanwhile, the recess 22r of the lock plate side rotating shaft 22 is provided with a second through hole 22h at a position corresponding to the first through hole 13h on the side surface. That is, as shown in Fig. 6(B), when the motor side rotating shaft 13 and the lock plate side rotating shaft 22 are engaged with each other and rotated appropriately, the first insertion hole 13h and the second insertion hole 22h are aligned, and an insertion hole can be formed at the engagement point. Furthermore, as shown in Fig. 6(C) and Fig. 6(D), the motor side and the lock plate side are connected by the connecting member LK by inserting the connecting member LK into the insertion hole.

[0039] By maintaining the connection by the connecting member LK, it becomes possible to detect the ascent and descent of the lock plate 21 by measuring the angle of the motor side rotating shaft 13.

[0040] Hereinafter, one configuration example will be described with reference to the block diagram shown in Fig. 7 regarding the functional aspects of the lock plate type parking device 100. As shown in the figure and as described above, the lock plate type parking device 100 comprises a motor side device 10, a lock plate side device 20, and a control device 50, but here, one configuration example of the control device 50 will be described in detail, and the operation control of each part constituting the lock plate type parking device 100, including each part of the motor side device 10 and the lock plate side device 20, will be described.

[0041] As shown in the figure, the control device 50 is composed of, for example, various circuit boards and a CPU, and is equipped with a main control unit MM at its center, a vehicle detection unit 50v, a motor control unit 50m, a lock plate position detection unit 50f, the main control unit MM, and a communication unit 50t.

[0042] The vehicle detection unit 50v is connected to the vehicle detection sensor VD, receives the detection result from the vehicle detection sensor VD, and determines whether a vehicle is entering or leaving the garage.

[0043] The motor control unit 50m is connected to the motor 11, and controls the rotation (rotation) operation of the motor 11 described above.

[0044] The lock plate position detection unit 50f is connected to the encoder 15 including the photosensors PS1 to PS4, receives the measurement results of the encoder 15 described above with reference to Figure 5, and detects the position of the lock plate 21 based on the detection results, i.e., performs position calculation processing based on the measurement results of the encoder 15.

[0045] The main control unit MM is connected to each of the above-mentioned units and controls various operations of the lock plate parking device 100. Here, it functions as a damage determination unit 50b that determines whether or not the gear head of the motor 11 is damaged (see FIG. 4) based on the degree of rotation of the motor 11 in the motor control unit 50m and the result of position calculation in the lock plate position detection unit 50f, that is, the rotation status of the motor 11 and the motor-side rotating shaft 13.

[0046] The communication unit 50t communicates information with the settlement machine PM, which is an external mechanism, and the higher-level device CM. That is, the communication unit 50t functions as a notification unit NU that notifies various information to the outside, and in particular, notifies the determination result of the main control unit MM, which serves as the damage determination unit 50b, to the settlement machine PM, which is an external device, and the higher-level device CM.

[0047] Hereinafter, with reference to Figs. 8 to 10, the operation of the lock plate type parking device 100 under various conditions will be described while comparing the operating conditions of the motor side device 10 and the lock plate side device 20.

[0048] First, an example of the operation of the lock plate type parking device 100 in normal operation will be described with reference to Figs. 8 and 9. Fig. 8(A) is a side view conceptually showing both the motor side device 10 and the lock plate side device 20 constituting each part of the lock plate type parking device 100. Meanwhile, Figs. 8(B) to 8(E) show each part constituting the motor side device 10 and each part constituting the lock plate side device 20 separately in order to explain an example of the upward operation among the operations for each situation of the lock plate type parking device 100 in normal operation, and within the frame of each figure, the operation status of the motor side device 10 is shown on the left side, and the corresponding operation status of the lock plate side device 20 is shown on the right side. Similarly, Figs. 9(A) to 9(D) are intended to explain an example of the downward operation among the operations for each situation of the lock plate type parking device 100 in normal operation.

[0049] First, referring to Fig. 8, an example of the rising operation of the lock plate type parking device 100 during normal operation will be described. Fig. 8(B) illustrates the state in which the lock plate 21 is fully lowered in the lock plate side device 20 before the start of rising. To explain in detail, first, in the motor side device 10, the link member 12 is operated (rotated) in the direction indicated by the arrow DD1a so as to act in the direction to lower the lock plate 21. In this case, the abutment portion 12t of the link member 12 abuts against the contact portion 13t of the motor side rotating shaft 13, and a force Fm acts in the direction to push it down. That is, the motor side rotating shaft 13 receives the force Fm caused by the motor 11 at the contact portion 13t. As already mentioned, the motor side rotating shaft 13 is constantly subjected to a force Fs from the spring 14 shown in FIG. 8(A) etc. in the direction to lift the lock plate 21. In the case shown in FIG. 8(B), the force Fs acts in the opposite direction to the force Fm. However, since the force Fm caused by the motor 11 is, for example, greater than the force Fs, the lock plate 21 is pushed down and is ultimately maintained in a fixed state at the lowest position.

[0050] On the other hand, Fig. 8(C) illustrates a case where the lock plate 21 is being raised. Specifically, in the motor-side device 10, the motor 11 operates (rotates) the link member 12 in the direction indicated by the arrow DD1b (opposite the direction of the arrow DD1a), which is opposite to the case of Fig. 8(B). In this case, for example, the abutment portion 12t moves in a direction away from the contact portion 13t, but since the contact portion 13t is always subjected to a force Fs in the direction in which the motor-side rotating shaft 13 is raised by the spring 14, the contact portion 13t rotates to follow the abutment portion 12t. However, as shown in Fig. 8(D), since the rotation range of the motor-side rotating shaft 13 is restricted by the rotation range restricting portion 23 provided in the lock plate device 20, the motor-side rotating shaft 13 reaches the upper limit when it reaches a predetermined angle and does not rotate any further. Here, the contact portion 13t of the motor-side rotating shaft 13 or its position when it has risen to the limit is illustrated as contact portion 13q (or contact portion upper limit position 13q). When the contact portion 13t reaches the contact portion upper limit position 13q, a reaction force Fr is applied to the lock plate 21 from the rotation range regulating portion 23 in the lock plate side device 20. Regarding the above, in the motor-side rotating shaft 13, a force (reaction force) Fra corresponding to the reaction force Fr and the weight of the lock plate 21, etc. act to balance with the force Fs from the spring 14, and as a result, the contact portion 13t remains at the contact portion upper limit position 13q.

[0051] On the other hand, as described above, the rotation by the motor 11 in the direction indicated by the arrow DD1b is set to be larger than that of the motor side rotating shaft 13. Therefore, when the motor 11 has fully rotated in the direction indicated by the arrow DD1b shown in FIG. 8(E), the abutment portion 12t of the link member 12 moves further than the contact portion 13t, which remains at the contact portion upper limit position 13q due to the action of the force (resistance force) Fra, and becomes separated from the contact portion 13t.

[0052] Next, referring to FIG. 9, an example of the lowering operation of the lock plate type parking device 100 in normal operation will be described. FIG. 9(A) illustrates the state in which the lock plate 21 has completed the lifting in the lock plate side device 20 before the start of the lowering, which is the same as the arrangement shown in FIG. 8(E), but the motor 11 is again in the direction shown by the arrow DD1a. In this case, the contact portion 12t of the link member 12 rotates and comes into contact (abuts) again with the contact portion 13t that was separated from it as shown in FIG. 9(B), and then, as shown in FIG. 9(C), a force Fm acts in a direction to push it down. For example, since the force Fm is greater than the force Fs from the spring 14, the lock plate 21 is pushed down in the direction shown by the arrow AR1, and finally, as shown in FIG. 9(D), it is maintained in a fixed state at the most lowered position. That is, it returns to the same state as shown in FIG. 8(B).

[0053] Among the series of operations described above, particularly during the lowering operation shown in Figures 9(A) to 9(D), as described above, the lock plate 21 may rise due to various factors such as damage to the gear head inside the motor 11.

[0054] Hereinafter, with reference to FIG. 10, an example of the operation state will be described in which the lock plate 21 rises while the motor is lowering it.

[0055] In this case, as shown in Fig. 10(A) and Fig. 10(B), in the process in which the abutting portion 12t pushes down the contact portion 13t and the lock plate 21 advances in the direction indicated by the arrow AR1, as in Fig. 9(A) and Fig. 9(B), due to various factors, as shown in Fig. 10(C), even though the motor 11 continues to rotate in the direction indicated by the arrow DD1a, the lock plate 21 may not be affected by this (or the force is offset by other factors), while the force Fs from the spring 14 (see Fig. 8, etc.) continues to act on the lock plate 21, and as a result, the lock plate 21 may rise in the direction indicated by the arrow AR2, which is the opposite direction to the arrow AR1. In the example shown in Fig. 10(C), the position corresponding to the position of the lock plate 21 in Fig. 10(B) is shown by a broken line as the lock plate 21x, and the lock plate 21 that has risen from that position due to the occurrence of the above-mentioned event is shown by a solid line as the lock plate 21y.

[0056] It is known that the difference between the position indicated by the broken line and the position indicated by the solid line in Fig. 10(C) varies in degree depending on the cause of the rise. For example, it is empirically known that the rise caused by the loss of gear teeth (gear head damage) inside the motor 11 illustrated with reference to Fig. 4 is larger than the rise in the error range, such as the rise in the normal operating range due to the slight movement of the lock plate 21. Therefore, in this embodiment, a threshold value is set in advance for the width (value) of the rise that occurs during the lock plate descent control, and it is possible to determine whether or not the gear head is damaged depending on whether or not a rise larger than the threshold value occurs.

[0057] In addition, when the above-mentioned upward movement occurs during the downward movement, the motor 11 is in a state of being in a state of free rotation, so that the planned rotation amount may be reached before the lock plate 21 reaches the lowering position. For example, when the motor 11 continues to rotate in the direction indicated by the arrow DD1a in FIG. 10(C) and reaches the planned rotation amount, the rotation stops and the lock plate 21 is temporarily stopped at that position, as shown in an example in FIG. 10(D). In other words, the motor side (motor control unit 50m) determines that the downward movement is completed when a specified amount (a certain amount or more) of rotation has been performed. In FIG. 10(D), the action of the force Fmt and the force Fs applied by the contact portion 12t contacting the contact portion 13t is balanced, so that the lock plate 21 is in a stopped state. However, in this case, a series of states of the rotation status (lowering and rising) of the lock plate 21, including the rising, can be detected sequentially based on the measurement of the encoder 15, so that the lock plate side (lock position detection unit 50f) detects that the lock plate 21 has not reached the lowering completion position. In this way, when a discrepancy occurs between the judgment results of the motor control unit 50m and the lock position detection unit 50f, the control device 50 (main control unit MM) controls the drive of the motor 11 to lower the lock plate 21 again from the position of the lock plate 21x shown by the broken line to the position of the lock plate 21y shown by the solid line, as shown in FIG. 10(E), if the rising occurrence illustrated in FIG. 10(C) is within the normal operating range. In addition, the control device 50 (main control unit MM) repeats such an operation as necessary until the lock plate 21 reaches the lowering completion position (retry operation). However, if the rise illustrated in Figure 10 (C) is so large as to exceed a preset threshold, the control device 50 (main control unit MM) will determine through the damage determination unit 50b that an abnormality has occurred due to damage to the gear head, and will stop the descent control while also performing various processes such as notifying the outside of the occurrence of the abnormality and its type using the configuration described above.

[0058] Hereinafter, a series of operations and judgment processing in the lock plate type parking device 100 will be described with reference to a flowchart shown in FIG. 11. Here, an example will be described of the process of lowering the lock plate 21 from a raised state among the operations of the lock plate type parking device 100 described with reference to FIG. 8 to FIG. 10, etc., in which the rising of the lock plate 21 is monitored by measuring the amount of rotation of the motor side rotating shaft 13 (reading the encoder pulse) using the light blocking and light receiving in the encoder 15 described with reference to FIG. 5, etc. In addition, in this example, an example will be described of the case where the damage judgment unit 50b judges whether or not the gear head is damaged based on the rising width and the number of times the lock plate 21 is raised when the motor 11 lowers the lock plate 21. In this example, the damage judgment unit 50b also judges whether or not the gear head is damaged based on whether or not a retry is performed when the lock plate 21 rises.

[0059] When the lowering control of the lock plate 21 starts, the main control unit MM of the lock plate parking device 100 first reads the first encoder pulse in the encoder 15, i.e., measures the initial amount of rotation of the motor-side rotating shaft 13, via the lock position detection unit 50f to obtain an initial encoder pulse value (step S101), and stores the value in a predetermined storage area as the current encoder pulse value (current encoder pulse value) (step S102). That is, the value obtained in step S101 is substituted for the current encoder pulse value as the initial value. In addition, the value obtained in step S101 is stored in a predetermined storage area as a value indicating the lowest position in the lowering control up to now (lowest encoder pulse value) (step S103). Here, the lowest encoder pulse value and the current encoder pulse value are successively compared to determine whether the lock plate 21 is rising during the lowering control.

[0060] When the initial settings up to step S103 are complete, the main control unit MM repeats the loop process for each stage of the descent control shown in steps S104 to S118 until it is confirmed that the descent of the lock plate 21 is completed (step S105: OK) or that an abnormality has occurred due to gear head damage (step S106: OK). Specifically, when the main control unit MM starts monitoring the descent control for one stage of the lock plate 21 (step S104), it first checks whether the descent control is complete by, for example, collecting information from the motor control unit 50m and the lock position detection unit 50f about the operating status of the motor 11 and checking the information based on that information (step S105).

[0061] In step S105, if the lowering control is not completed (step S105: NG), i.e., if the lowering control is continuing, the main control unit MM further checks whether or not an abnormality has occurred due to damage to the gear head (step S106).

[0062] If it is determined in step S106 that the gear head is not damaged (step S106: NG), the main control unit MM acquires the encoder pulse value after the descent of the encoder 15 via the lock position detection unit 50f (step S107), and stores the value acquired in step S107 as a new current encoder pulse value in a predetermined storage area (step S108). That is, the current encoder pulse value is updated. After completing the update in step S108, the main control unit MM checks whether the updated current encoder pulse value is smaller than the lowest encoder pulse value (step S109). That is, by comparing these, it checks whether the lock plate 21 has risen.

[0063] In step S109, if the current encoder pulse value is not smaller than the lowest encoder pulse value (step S109: NG), it is determined that the lock plate 21 is rising, and it is confirmed whether the difference between the current encoder pulse value and the lowest encoder pulse value, which is the range of the rise, is smaller than a predetermined threshold value, the rising motion judgment threshold (step S110). Here, the rising motion judgment threshold means a threshold value that is set in advance to distinguish between a rise within a normal operating range and a rise caused by damage to the gear head that exceeds this range, as described with reference to Fig. 10(C), and if a difference exceeding the rising motion judgment threshold is observed, it is treated as if the gear head is damaged or there is a high possibility of such damage.

[0064] In step S110, if it is determined that the count is greater than or equal to the ascent operation judgment threshold (step S110: NG), the number of ascent operations, which is the number of times that judgment was made, is counted (incremented) (step S111), and it is then confirmed whether the number of ascent operations is less than the gear head damage judgment threshold, which is a predetermined upper limit number of ascent operations (step S112).

[0065] In step S112, if the number of times of the upward movement is equal to or greater than the gear head damage judgment threshold (step S112: NG), the main control unit MM, as the damage judgment unit 50b, judges that the gear head is damaged in the motor 11 (step S113) and ends a series of loop processes (step S118). Note that the gear head damage judgment threshold can be set to various numbers of times depending on the specifications, and is assumed to be, for example, about three times, but it is also conceivable to set the specifications so that if an upward movement exceeding the upward movement judgment threshold is confirmed even once, the gear head is judged to be damaged, that is, the gear head damage judgment threshold is set to 0 (zero).

[0066] Furthermore, in step S112, even if the number of upward movements is equal to the gear head damage determination threshold (step S112: OK), if an upward movement is detected in the previous loop processing without a downward movement (step S114: OK), that is, in regard to the repeated loop processing, an upward movement is also detected in step S110 of the loop processing one before the current loop processing (step S110: NG) and the current operation is a retry operation, it is determined that gear head damage has occurred (step S113).

[0067] If it is not determined in step S114 that the operation is a retry (step S114: NG), or if it is determined in step S110 that the threshold for determining the ascent operation is not exceeded, i.e., the ascent is not attributable to damage to the gear head (step S110: OK), the gear head damage determination shown in step S113 is not made, but the occurrence of ascent of the lock plate 21 (step S109: NG) is treated as having been detected, and the same ascent state is maintained (step S115), and the series of loop processes is terminated (step S118). If step S115 is passed and the process proceeds to step S114 in the next loop process, it will be treated as a retry operation (step S114: OK).

[0068] On the other hand, in step S109, if the current encoder pulse value is smaller than the lowest encoder pulse value (step S109: OK), that is, if no rise has occurred and the descending operation is continuing normally, an update process is performed to set the current encoder pulse value in step S108 as the new lowest encoder pulse value (step S116). At the same time, the same ascending state is released as necessary (step S117). That is, if step S115 has been passed in the previous loop process, this is released and the series of loop processes is terminated (step S118).

[0069] As described above, when loop processing is performed, each loop processing ends via either step S113, step S115, or step S117. In principle, the processing is repeated until completion of descent control is confirmed in step S105. However, if step S113 was reached in the previous loop processing, it will be confirmed in step S106 in the next loop processing that an abnormality has occurred due to damage to the gear head (step S106: OK), the descent operation will be stopped, and necessary processing such as an alarm will be performed.

[0070] Hereinafter, the lock plate type parking device 100 will be outlined with reference to a conceptual diagram shown in FIG.

[0071] As shown in the figure and as described above, in the lock plate type parking device 100 of this embodiment, when the motor 11 is acting in the direction of lowering the lock plate 21, i.e., in the direction indicated by the arrow DD1a, the occurrence of the rising of the lock plate 21 in the direction indicated by the arrow AR2, which corresponds to the opposite direction, is detected. When such an occurrence of the rising of the lock plate 21 is detected, the damage determination unit 50b determines whether or not the gear head of the motor 11 is damaged, i.e., whether or not the gear head is damaged, based on the occurrence of the rising. For example, in the example described above with reference to Figures 2, 3, 5, etc., the encoder 15 is provided around the motor side rotating shaft 13, and based on the result of detecting the rotation state of the motor side rotating shaft 13 by the encoder 15, the occurrence of the rising of the lock plate 21 during the lowering action by the motor 11 as described above is detected, and based on this, the damage determination unit 50b determines whether or not the gear head is damaged.

[0072] In the above, we have explained the case where a determination is made as to whether a gear head is damaged as an abnormality. However, there are other types of abnormalities that can occur in a parking device such as the lock plate type parking device 100, such as a disconnection at the connection part CN or the lock plate 21 being stepped on.

[0073] Below, an overview of disconnection and stepping on the lock plate will be described with reference to Fig. 13. In Fig. 13, Fig. 13(A) to Fig. 13(D) are conceptual diagrams for explaining an example of the operation of the lock plate type parking device 100 when disconnection occurs, and Fig. 13(E) to Fig. 13(H) are conceptual diagrams for explaining an example of the operation of the lock plate type parking device 100 when stepping on the lock plate occurs. Note that Fig. 13(A) and Fig. 13(E) show the operating conditions of the lock plate side device 20 of the lock plate type parking device 100, and Fig. 13(B) to Fig. 13(D) and Fig. 13(F) to Fig. 13(H) show the operating conditions of the motor side device 10.

[0074] First, an example of the occurrence of disconnection will be described with reference to Fig. 13(A) to Fig. 13(D) and the like. In the connection between the motor side and the lock plate side by a configuration such as the lock plate type parking device 100, if a force exceeding a predetermined magnitude acts on the connecting member LK of the connection part CN shown in Fig. 3 and the like, the connecting member LK (or a part thereof) breaks, and the connection between the motor side and the lock plate side is released without, for example, applying a load exceeding the expected load to the motor side and the like. As a result, for example, in order to deal with the case where a load due to an abnormality in normal operation is applied to the motor side device 10 side, it is not necessary to provide a facility for dealing with the unexpected load in the internal structure of the motor side device 10, and therefore the motor side device 10 and each part of the connection point can be configured simply.

[0075] In FIG. 13(A), the case where disconnection occurs is indicated by an x ​​mark. In this case, the lock plate side rotating shaft 22 of the lock plate side device 20 is released from the motor side rotating shaft 13 of the motor side device 10 shown in FIG. 13(B) and the like, and the lock plate 21 is lowered to the fullest by its own weight. In this case, the lock plate 21 is maintained in the fullest lowered state regardless of the operation status of the motor side device 10 shown in FIG. 13(B) to FIG. 13(D). Furthermore, in this case, the lock plate 21 is not in contact with the rotation range restricting portion 23, so that the reaction force Fr (see FIG. 8) acting from the rotation range restricting portion 23 does not act on the motor side device 10. Therefore, as shown in FIG. 13(D), the motor side rotating shaft 13 continues to receive the force Fs from the spring 14, and continues to rotate even if the position of the contact portion 13t exceeds the contact portion upper limit position 13q shown by the dashed line in the figure. The above-mentioned operating condition (excessive rotation) of the motor-side rotating shaft 13 can be captured by measurement by the encoder 15. In other words, the occurrence of disconnection can be detected by the encoder 15.

[0076] After the above-mentioned damage to the connecting member LK, i.e., after the disconnection occurs, the function of the lock plate type parking device 100, i.e., the function of the parking device such as raising and lowering (opening and closing) of the lock plate 21, is lost. Therefore, a quick response (on-site response such as reinserting a new connecting member LK) is required to restore the function. Therefore, it is considered that the control device 50 is configured to notify the outside when such a situation occurs.

[0077] Next, an example of the lock plate being stepped on will be described with reference to Figs. 13(E) to 13(H) and so on.

[0078] One of the illegal parking patterns is, for example, stepping on the lock plate 21 with the tire of the vehicle or attaching the lock plate 21 to the ground with adhesive tape. When such a force Ft acts on the lock plate 21 as shown in FIG. 13(E), the lock plate 21 remains in the fully lowered state regardless of the operating state of the motor side device 10 as shown in FIG. 13(F) to FIG. 13(H). Here, the occurrence of such a situation is referred to as the occurrence of the lock plate being stepped on. In this case, unlike the case of the disconnection described with reference to FIG. 13(A) to FIG. 13(D), the motor side rotating shaft 13 does not rotate while remaining in the lowered state, and therefore, the encoder 15 also detects that the motor side rotating shaft 13 is not rotating. Specifically, as shown in the figure, the force Ft from the lock plate side device 20 is transmitted to the motor side rotating shaft 13 via the connecting member LK. In the figure, it is shown that a force Fta corresponding to the force Ft acts. That is, in this case, a force Fta is constantly applied to push down the motor-side rotating shaft 13, so that even if the motor 11 starts rotating in the upward direction indicated by the arrow DD1b, the motor-side rotating shaft 13 remains stationary. The occurrence of such a lock plate being stepped on can also be detected by the control device 50 by comparing the detection by the encoder 15 with the operating status of the motor 11. When the lock plate is stepped on, the rotation of the motor-side rotating shaft 13 is not detected, and therefore damage to the gear head cannot be detected. Therefore, it is conceivable that the control device 50 is configured to notify the outside when such an event occurs. However, when the lock plate is stepped on, if the state is released, the parking device functions such as raising and lowering (opening and closing) the lock plate 21 are restored. Therefore, it is conceivable that the control device is configured to notify the outside when the event is restored.

[0079] As described above, the lock plate type parking device 100 of this embodiment includes the motor 11 that acts in a direction to lower the lock plate 21, and the damage determination unit 50b that determines whether or not the gear head of the motor 11 is damaged based on the occurrence of the rise of the lock plate 21 when the motor 11 acts to lower the lock plate 21. In the above lock plate type parking device 100, the presence or absence of damage to the gear head of the motor 11 can be easily and reliably determined by accurately capturing the situation in which the lock plate 21 rises despite the lock plate 21 being lowered by the motor 11.

[0080] 〔others〕 The present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

[0081] First, in the above, the encoder 15 is attached to the motor-side rotating shaft 13, but as long as it can accurately detect the operating status of the lock plate 21, it can be attached to various other locations.

[0082] In addition, in the above, the connecting member LK may be formed using an engaging member such as a bolt, a wire, etc., in addition to being a pin-shaped member (weak point pin). The cross-sectional shape is not limited to a cylinder, etc., and may be formed into various shapes such as a rectangle.

[0083] In addition, in the above, when an abnormality is detected, an alert is sent to the settlement machine PM, but the alert mode and destination are not limited to the above and can take various forms, and for example, it is possible to directly alert the parking management side, such as a higher-level device CM or a terminal carried by the manager.

[0084] Also, the means for grasping the rotational state of the motor-side rotating shaft 13 is not limited to the above-mentioned example of the encoder 15, and various means can be applied, and it is also possible to use other types of encoders and various types of sensors. Also, it is conceivable to provide an encoder or the like in order to measure the degree of operation (rotation) of the motor 11 in the motor control unit 50m, or to use the encoder 15 in a manner that allows the rotational state of the third member 12c to be confirmed at the same time. [Explanation of symbols]

[0085] 10...motor side device, 11...motor, 12...link member, 12a...first member, 12b...second member, 12c...third member, 12t...contact portion, 13...motor side rotating shaft, 13e...end, 13q...contact portion upper limit position, 13t...contact portion, 13h...first insertion hole, 14...spring, 15...encoder, 20...lock plate side device, 21...lock plate, 22...lock plate side rotating shaft, 22h...second insertion hole, 22r...recess, 23...rotation range regulating portion, 50...control device, 50b...damage determination portion, 50f...lock plate position detection portion, 50m...motor control portion, 50t...communication portion, 50v...vehicle detection portion, 10 0...Lock plate type parking device, 500...Parking lot management system, AA1, AR1, AR2, BB1...Arrow, CA...Car compartment, CM...Hosing, CN...Connection, CS...Housing, DA1a, DA1b...Arrow, DD1, DD1a, DD1b, DD1c, DD2...Arrow, Fm, Fmt...Force, Fr...Resistance, Fra...Force (Resistance), Fs, Ft, Fta...Force, GH...Gear head, GRa, GRb...Gear, LK...Connecting member, MI...Missing, MM...Main control unit, NU...Alarm unit, PA...Parking lot, PM...Payment machine, PS1 to PS4...Photo sensor, SL...Slit, VD...Vehicle detection sensor

Claims

1. A motor that acts in a direction to lower the lock plate; a damage determination unit that determines whether or not a gear head of the motor is damaged based on the occurrence of rising of the lock plate when the motor acts to lower the lock plate; A lock plate type parking device.

2. 2. The lock plate type parking device according to claim 1, wherein the damage determination unit determines whether or not a gear head is damaged based on the amount of lift and the number of times the lock plate is lifted when the motor acts to lower the lock plate.

3. 2. The lock plate type parking device according to claim 1, wherein the damage determination unit determines whether or not the gear head is damaged based on whether or not a retry has occurred when the lock plate rises.

4. An encoder is provided to measure the amount of rotation of the lock plate, The lock plate type parking device according to claim 1 , wherein the damage determination unit determines whether or not a gear head is damaged based on the measurement result of the encoder.

5. a connection portion that connects the lock plate and the motor; an elastic member that acts on the connection portion in a direction to lift the lock plate; Equipped with 2. The lock plate type parking device according to claim 1, wherein the motor exerts an action on the lock plate that resists the action of the elastic member on the lock plate, thereby lowering the lock plate.

6. 6. The lock plate type parking device according to claim 5, wherein the connection portion includes a motor side rotating shaft that receives action from the motor, a lock plate side rotating shaft that raises and lowers the lock plate by rotation, and a connecting member that connects the motor side rotating shaft and the lock plate side rotating shaft.

7. 2. The lock plate type parking device according to claim 1, further comprising an alarm unit that notifies the outside of the determination result made by the damage determination unit.

Images