JP2011102469A - Vehicle lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle lock device capable of preventing a fraudulent operation by preventing a lock plate from being brought down, even when a forced push-down force acts. <P>SOLUTION: This vehicle lock device includes: a cylinder 7 with a freely protruding/receding rod 6: a slide cam 8 which is connected to a leading end of the rod 6 and which slides in synchronization with the protrusion/receding of the rod 6; a rotating arm 9 which is rotated by being guided by the slide cam 8; a rotating shaft 5 which is coupled to the rotating arm 9; and a lock plate 1 which is raised or brought down by the rotation of the rotating shaft 5. The slide cam 8 comprises cam surfaces 81 and 82 for guiding a guide piece 9a of the rotating arm 9. A stopper surface 83 for receiving the guide piece 9a of the rotating arm 9 is provided between the cam surfaces 81 and 82. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle lock device installed in a parking lot or the like.

  As shown in FIG. 9, this type of vehicle lock device includes a lock plate 1 that stands and falls on the ground 102. The lock plate 1 is attached to a rotating shaft 5 that rotates in conjunction with a rod of a cylinder (not shown). The lock plate 1 rises when the rod moves forward and falls when the rod moves backward. When it is detected by a sensor (not shown) that the vehicle 100 has entered a predetermined position, the cylinder is activated and the rod is extended, and the lock plate 1 is erected as shown by a solid line through the rotating shaft 5. For this reason, the tire 101 of the vehicle 100 cannot get over the lock plate 1, and the vehicle 100 is prevented from leaving. Further, when the parking fee is settled by a fee settlement machine (not shown), the cylinder is operated, the rod is retracted, and the lock plate 1 is laid down as indicated by a broken line via the rotating shaft 5. Therefore, the tire 101 of the vehicle 100 can get over the lock plate 1 and the vehicle 100 can be withdrawn. Such a vehicle locking device is described in Patent Document 1 below, for example.

JP 2005-248647 A

  However, in the conventional vehicle locking device, if the standing lock plate 1 is forcibly pushed down by a foot or the like, the rod of the cylinder may be retracted by a pressing force, and the lock plate 1 may fall down. When such a situation occurs, it becomes possible to leave the vehicle 100 without paying the parking fee, resulting in a fraudulent act.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lock device that can prevent fraud by preventing the lock plate from falling down even when a forced pressing force is applied.

  A vehicle locking device according to the present invention includes a cylinder having a rod that can be moved forward and backward, a slide cam that is coupled to the tip of the rod and slides in conjunction with the forward and backward movement of the rod, and a rotating arm that is guided by the slide cam and rotates. And a rotating shaft connected to the rotating arm, and a lock plate that stands or falls by the rotation of the rotating shaft. The slide cam has a plurality of cam surfaces for guiding the rotating arm, and a stopper surface for receiving the rotating arm is provided between adjacent cam surfaces.

  According to such a configuration, when a forced pressing force is applied to the standing lock plate, the rotary arm tries to rotate via the rotary shaft, but a part of the rotary arm is stopped by the stopper surface of the slide cam. Since it is received, the lock plate does not fall down. Therefore, it is possible to prevent the lock plate from being intentionally pushed down by a foot or the like and allowing the vehicle to leave.

  According to the present invention, since the lock plate does not fall down even if a forced pressing force is applied to the lock plate, it is possible to prevent the act of illegally leaving the vehicle.

It is a top view which shows the whole structure of a vehicle locking device. It is a right view of the XX cut surface of FIG. It is a top view of a drive device. FIG. 3 is an enlarged view of the vicinity of the driving device in FIG. 2. It is operation | movement explanatory drawing of a vehicle locking device. It is operation | movement explanatory drawing of a vehicle locking device. It is operation | movement explanatory drawing of a vehicle locking device. It is a figure which shows the other example of a slide cam. It is a figure explaining the function of a vehicle locking device.

  Embodiments of the present invention will be described with reference to the drawings. Below, the vehicle locking device installed in the parking space of a parking lot is mentioned as an example. 1 and 2, a vehicle locking device A includes a lock plate 1, a base plate 2 provided adjacent to the lock plate 1, a drive device 3 provided on one side of the lock plate 1, and the lock plate 1. And a support device 4 provided on the other side portion of the head.

  The lock plate 1 is attached to the rotation shaft 5 and is rotatable together with the rotation shaft 5. One end of the rotating shaft 5 is supported by the driving device 3, and the other end is supported by the supporting device 4. The base plate 2 is not attached to the rotating shaft 5 and does not rotate. The lock plate 1 and the base plate 2 are installed so as to protrude in a triangular shape with respect to the ground. When the driving device 3 is not operated, the vehicle tire can pass over both plates. When the drive unit 3 is operated and the rotary shaft 5 rotates, the lock plate 1 rises as shown in FIGS. 5 to 7 and the vehicle tire cannot be passed over. The details of this operation will be described later. .

  Next, details of the driving device 3 will be described. In FIG. 3, the drive device 3 includes a cylinder 7 having a rod 6 (see FIGS. 6 and 7) that can be moved forward and backward, a slide cam 8 that slides as the rod 6 moves forward and backward, and a rotation that is guided by the slide cam 8 and rotates. Arm 9 is provided.

  Here, the cylinder 7 is an electric cylinder using a motor as a drive source, and the rod 6 performs a linear motion (advance / retreat) by the rotation of the motor. The cylinder 7 is supported by a pair of shafts 11 via a bracket 10. The shaft 11 is provided with a coil spring 12 made of a compression spring. One end of the coil spring 12 abuts on the bracket 10 via a washer 14, and the other end abuts on the guide block 13 via a washer 15. ing. The shaft 11 is slidably supported by the guide block 13, one end is fixed to the bracket 10 by a fixing member 16, and an adjustment nut 17 is attached to the other end. With such a structure, the cylinder 7 is elastically supported by the guide block 13 via the bracket 10, the shaft 11, and the coil spring 12, and can be displaced in the forward / backward direction (vertical direction in FIG. 3) of the rod 6. It has become.

  The slide cam 8 is connected to the tip of the rod 6 and slides as the rod 6 advances and retreats. The slide cam 8 has a stepped shape as shown in FIG. 5 and includes a first-stage cam surface 81 and a second-stage cam surface 82. A stopper surface 83 is provided between the adjacent cam surfaces 81 and 82. The cam surfaces 81 and 82 are arcuate curved surfaces that are recessed downward, and the stopper surface 83 is a flat surface with a narrow width.

  The rotary arm 9 is connected to the rotary shaft 5 via a parallel key 18 (FIG. 3), and rotates integrally with the rotary shaft 5 by sliding of the slide cam 8. A guide piece 9 a is formed on the rotary arm 9, and the guide piece 9 a is guided by the cam surfaces 81 and 82 of the slide cam 8, whereby the rotary arm 9 rotates about the rotary shaft 5. One end of the rotating shaft 5 is supported by the bearing portion 19. Reference numeral 20 denotes a magnetic detection piece attached to the rotary shaft 5, and a protruding piece 20a is formed as shown in FIG. Reference numeral 21 denotes a magnetic proximity switch that detects the protruding piece 20 a of the detection piece 20, and is fixed to the bearing portion 19 by a mounting plate 22. The magnetic proximity switch 21 is a sensor for detecting the extension limit position of the rod 6.

  As shown in FIGS. 3 and 5 to 7, a magnetic detection piece 23 is attached to the upper portion of the slide cam 8. The detection piece 23 moves integrally with the slide cam 8 and is detected by a magnetic proximity switch 24 attached to the attachment plate 25. The magnetic proximity switch 24 is a sensor for detecting the origin position of the rod 6. 5 to 7, reference numeral 26 denotes a magnetic detection piece that moves in conjunction with the cylinder 7, and 27 denotes a magnetic proximity switch that detects the backward movement of the cylinder 7 by detecting the detection piece 26. Reference numeral 28 denotes a vehicle detector that detects a vehicle based on a signal from a vehicle detection loop coil (not shown) embedded in the ground.

  As shown in FIGS. 4 to 7, the above-described components constituting the driving device 3 are accommodated in the cover 30.

  Next, the operation of the vehicle locking device A having the above-described configuration will be described with reference to FIGS. In FIG. 5, in a state where the vehicle has not entered the parking space, there is no output from the vehicle detector 28, so the cylinder 7 is not operating. In this state, the rod 6 is retracted, and the slide cam 8 connected to the rod 6 is located away from the rotating shaft 5. At this time, the rotary arm 9 is in a posture as shown by a solid line, and the guide piece 9 a of the rotary arm 9 is in contact with the distal end side of the cam surface 81 of the slide cam 8. And the lock plate 1 is in the fallen state, as shown by a broken line.

  When the vehicle enters the parking space and the vehicle detector 28 detects the vehicle, the cylinder 7 operates based on the detection signal, the motor rotates forward, and the rod 6 extends. The extension of the rod 6 advances the slide cam 8 in a direction approaching the rotating shaft 5. Then, as the slide cam 8 advances, the guide piece 9a of the rotary arm 9 is guided to the cam surface 81 and ascends the cam surface 81, so that the rotary arm 9 together with the rotary shaft 5 rotates clockwise as indicated by a one-dot chain line. Rotate in the direction. For this reason, the lock plate 1 attached to the rotating shaft 5 also starts to rise and rises to the position indicated by the alternate long and short dash line.

  While the rod 6 extends and the slide cam 8 moves forward, the guide piece 9a of the rotary arm 9 moves up the cam surface 81. When the cam surface 81 is raised, the guide piece 9a rides on the stopper surface 83 as shown in FIG. At this time, the lock plate 1 is raised to the position shown in the figure. When the slide cam 8 continues to advance, the guide piece 9a of the rotating arm 9 moves up the cam surface 82 while being guided by the cam surface 82.

  When the lock plate 1 is raised to the limit position in FIG. 7, the protrusion 20 a (see FIG. 4) of the detection piece 20 attached to the rotating shaft 5 faces the magnetic proximity switch 21, and the magnetic proximity switch 21 is in the rod 6. The extension limit position is detected. By this detection signal, the cylinder 7 stops its operation, and the forward movement of the rod 6 and the slide cam 8 is also stopped.

  In this way, when the lock plate 1 stands, the vehicle tire cannot get over the lock plate 1 and the vehicle is prohibited from leaving.

  Thereafter, when the parking fee is settled by a fee settlement machine (not shown), the cylinder 7 is actuated again based on the settlement completion signal from the fee settlement machine. In this case, since the motor rotates in the reverse direction, the rod 6 and the slide cam 8 move backward. For this reason, the rotating arm 9 rotates counterclockwise with the rotating shaft 5 in response to the weight of the lock plate 1, so that the lock plate 1 also descends.

  That is, as the slide cam 8 moves backward, the guide piece 9a of the rotary arm 9 moves down the cam surface 82. When the cam surface 82 has been lowered, the guide piece 9a reaches the stopper surface 83 as shown in FIG. 6, and then continues to descend the cam surface 81. When the rotary arm 9 rotates to the solid line position in FIG. 5, the detection piece 23 provided on the slide cam 8 is detected by the magnetic proximity switch 24, and the cylinder 7 stops operating based on this detection signal. Thereby, the backward movement of the rod 6 and the slide cam 8 is also stopped. In this state, since the lock plate 1 is lying down as shown by the broken line in FIG. 5, the vehicle tire can get over the lock plate 1 and the vehicle is allowed to leave.

  By the way, since the height from the ground to the vehicle bottom surface (hereinafter referred to as “bottom surface height”) varies depending on the vehicle type, the lock plate 1 does not rise to the position of FIG. In the case of a normal vehicle having a typical bottom surface height, the lock plate 1 often comes into contact with the vehicle bottom surface before reaching the position shown in FIG. In the present embodiment, with respect to such a normal vehicle, the lock plate 1 comes into contact with the bottom surface of the vehicle when it rises to the position of FIG. 6 (or just after that).

  After the lock plate 1 comes into contact with the bottom surface of the vehicle, the rod 6 and the slide cam 8 still try to move forward, but the lock plate 1 does not move, so that the lock cam 1 moves backward to the slide cam 8 via the rotating arm 9 (FIG. 3). Reaction force (downward) acts. This reaction force is transmitted to the cylinder 7, and the cylinder 7 is displaced in the backward direction against the elastic force of the coil spring 12. When the reverse movement of the cylinder 7 is detected by the detection piece 26 and the magnetic proximity switch 27, the cylinder 7 stops operating, and the rod 6 and the slide cam 8 also stop.

  Thus, after the lock plate 1 comes into contact with the bottom surface of the vehicle, the coil spring 12 absorbs the forward force of the slide cam 8, so that an excessive force is not applied from the lock plate 1 to the bottom surface of the vehicle. Damage to the lock plate 1 can be avoided. Further, when the lock plate 1 comes into contact with the bottom surface of the vehicle, a reaction force in the backward direction acts on the cylinder 7 from that time, so that the magnetic proximity switch 27 does not matter which height the lock plate 1 makes contact with the bottom surface of the vehicle. The operation of the cylinder 7 can be stopped by detecting the backward movement of the cylinder 7.

  Next, means for preventing an illegal act caused by pressing down the lock plate 1 will be described. When the lock plate 1 in the standing state as shown in FIG. 7 is forcibly pushed down by a foot or the like, the elastic force of the coil spring 12 is considerably large, so that the normal pressing force locks against this elastic force. It is difficult to push down the plate 1. However, when a strong pressing force that overcomes the elastic force of the coil spring 12 is applied to the lock plate 1, the coil spring 12 contracts and the cylinder 7 moves backward, so that the slide cam 8 also moves backward. For this reason, the rotating arm 9 rotates via the rotating shaft 5, and the guide piece 9 a descends the cam surface 82.

  However, the guide piece 9a is received by the flat stopper surface 83 when the cam surface 82 has been lowered (see FIG. 6). In this state, even if the lock plate 1 is continuously pushed down, the guide piece 9 a remains in contact with the stopper surface 83 and does not shift to the cam surface 81. For this reason, the rotating arm 9 cannot rotate any more. Therefore, the depressed lock plate 1 stops at the position shown in FIG. 6 and does not fall down.

  Further, when the lock plate 1 is in contact with the bottom surface of the vehicle at the position shown in FIG. 6 and is forcibly pushed down from this state, the guide piece 9a is in contact with the stopper surface 83 from the beginning, so that the rotary arm 9 Cannot rotate. Therefore, the lock plate 1 does not fall down as described above.

  In this way, even when a forced pressing force is applied to the standing lock plate 1, the guide plate 9 a of the rotary arm 9 is received by the stopper surface 83 of the slide cam 8, so that the lock plate 1 does not fall down. Can be. As a result, the tire of the vehicle cannot get over the lock plate 1, and the illegal act of leaving the vehicle without paying the fee can be prevented.

  In the embodiment described here, as a means for transmitting the driving force of the cylinder 7 to the lock plate 1, a simple mechanism using the slide cam 8 and the rotating arm 9 is employed. The structure of the vehicle lock device can be simplified as compared with the one using the link mechanism as described above.

  The present invention can employ various embodiments other than those described above. For example, in the embodiment, the slide cam 8 is a two-stage cam having two cam surfaces 81 and 82, but the slide cam 8 may be a multi-stage cam having three or more cam surfaces. If it does in this way, correspondence to various vehicles with various bottom face height becomes easy. FIG. 8 shows an example of a three-stage cam. The slide cam 8 has cam surfaces 84, 85, 86 and stopper surfaces 87, 88 provided between adjacent cam surfaces.

  In the above embodiment, the cam surfaces 81 and 82 are curved surfaces, but the cam surfaces 81 and 82 may be inclined flat surfaces. Further, in order to reduce friction at the sliding contact portion between the cam surfaces 81 and 82 and the guide piece 9a, a lubricant supply mechanism may be provided to supply the lubricant to the sliding contact portion.

  In the embodiment, the magnetic proximity switches 21, 23, and 27 are used as position detection sensors. However, a photo sensor, a limit switch, or the like may be used instead.

  Furthermore, in the said embodiment, although the electric cylinder was used as the cylinder 7, it may replace with this and may use a hydraulic cylinder and an air cylinder.

  The present invention can be applied not only to a vehicle lock device installed in a parking lot but also to a vehicle lock device for theft prevention installed in a garage or the like.

DESCRIPTION OF SYMBOLS 1 Lock plate 3 Drive apparatus 5 Rotating shaft 6 Rod 7 Cylinder 8 Slide cam 9 Rotating arm 9a Guide piece 81,82 Cam surface 83 Stopper surface A Vehicle lock device

Claims (1)

A cylinder having a rod that can be advanced and retracted;
A slide cam connected to the tip of the rod and sliding in conjunction with the advance and retreat of the rod;
A rotating arm guided and rotated by the slide cam;
A rotating shaft coupled to the rotating arm;
A lock plate that stands or falls on rotation of the rotating shaft;
With
The slide cam has a plurality of cam surfaces for guiding the rotating arm,
A vehicle locking device characterized in that a stopper surface for receiving the rotating arm is provided between adjacent cam surfaces.

Images