JP2010065487A - Lift safety device for multistory parking garage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lift safety device for a multistory parking garage economizing electric power and having neither top dead center nor bottom dead center in a mechanism. <P>SOLUTION: The lift safety device for the multistory parking garage has: a mounting member 1 mounted to a guide member formed with a guide face for carrying out lifting guide of a pallet lifted by a lift in the multistory parking garage; a turning shaft body 3 supported by the mounting member turnably around an axis; a stopper member 4 held to the turning shaft body so as to turn together with the turning shaft body, extended in a radial direction and having a locking part lockable to the pallet on the tip side; and a driving device driving the turning shaft body to reciprocate and turn by a predetermined angle and reciprocating the locking part of the stopper member between a recessed position and a projecting position with respect to the guide face. The driving device has an electric motor 16 with a reduction mechanism, and the turning shaft body is driven by the electric motor 16 with the reduction mechanism. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a three-dimensional parking garage lift safety device in which a stopper member protrudes and descends with respect to a guide surface of a guide member that performs raising / lowering guidance of a pallet that is lifted and lowered by a lift that raises and lowers a car in a three-dimensional parking lot. is there.

  In order to bring a car to a predetermined position in a multi-story parking lot, when the pallet on which the car is placed and moved up and down stops, the guide surface of the guide member that guides the raising and lowering of the pallet so as to ensure safety at that position There is known a safety device that is provided with a stopper member that can be moved up and down, and that can receive the lift with the stopper member even when the lift holding force is lost due to an unexpected factor during parking. ing.

  Conventionally, as such a safety device, for example, a rotatable lever is provided as a stopper member, a wire or a spring is connected to one end of the lever, and the lever is pulled in one direction by pulling the solenoid. By rotating the lever, the pallet is allowed to pass into the guide surface to allow passage of the pallet. On the other hand, the solenoid's suction force is released, and the wire provided against the solenoid's suction force or By causing the stopper member to protrude from the guide surface by the force of the spring, the function as a stopper member for the pallet has been exhibited. Therefore, the safety device that allows passage of the pallet continuously energizes the solenoid for an allowable time.

  In the safety device using the solenoid, the solenoid is energized during the time when the solenoid is allowed to pass through the pallet. This time is often long and the power consumption is large. Even if the solenoid is not energized during this time and the state is maintained by a spring or the like, it must be energized during the parking time for functioning as a stopper, and this does not solve the problem.

  Therefore, in order to solve the problem of the safety device using such a solenoid, in Patent Document 1, the rotation of the motor is converted into a linear motion and is connected to the stopper member to transmit it to the stopper member. The first rotation and the second movement operation mechanism are operated at the front and rear positions of a predetermined width around the most protruding position and the most immersed position of the stopper member with respect to the guide surface in conjunction with the rotation / linear movement conversion mechanism. A parking mechanism having a switch mechanism having a second two switches, wherein the motor is set to stop until the next input current is received within the range of the predetermined width. Proposes safety devices.

According to the apparatus of Patent Document 1, no current flows through the motor when the stopper member is stopped at the most protruding / most retracted position when the pallet is used / not used. Actually, the movement time of the stopper member is extremely short and the stop state is very long, and power can be saved in this respect.
Japanese Patent No. 2851746

  However, the rotation / linear motion conversion mechanism of Patent Document 1 is similar to a reciprocating slider crank mechanism, and has a top dead center and a bottom dead center.

  Therefore, in Patent Document 1, when the reciprocating slider crank mechanism is in a top dead center or bottom dead center state, the driving force and the driving distance in the linear motion direction are small even if the rotational force of the motor is constant. With the disadvantage.

  In addition, the multilevel parking garage lift safety device may not operate due to an electrical system malfunction or the like. If the stopper member is locked or can be locked to the pallet in the protruding state, and the pallet located above the stopper member becomes the above-mentioned defect when the stopper member does not immerse due to the above-described defect. Thus, the protruding stopper member becomes an obstacle and cannot be lowered below the position.

  As a countermeasure for such a malfunction, the stopper member can only be immersed by the above-mentioned malfunction. However, in Patent Document 1, if the reciprocating slider crank mechanism is in a top dead center or bottom dead center state, Is also difficult to immerse. Moreover, in a multi-story parking lot, the actual situation is that the stopper member is located at a high place and there is no means for a person to approach it easily.

  This invention makes it a subject to provide the lift safety device for multistory parking lots which can eliminate said disadvantage and malfunction resulting from a top dead center and a bottom dead center, utilizing the advantage of the power saving in patent document 1. FIG.

  The lift safety device for a multilevel parking garage according to the present invention includes a mounting member attached to a guide member on which a guide surface for raising and lowering a pallet that is lifted and lowered by a lift in the multilevel parking garage is formed, and is rotated around an axis by the mounting member. A rotation shaft body that is movably supported, and a locking portion that is held by the rotation shaft body so as to rotate together with the rotation shaft body and that extends in the radial direction and can be locked with the pallet. A stopper member and a drive device that reciprocally drives the rotation shaft body by a predetermined angle to reciprocate the engaging portion of the stopper member between an immersion position and a protruding position with respect to the guide surface.

  In such a lift safety device for a multi-story parking lot, in the present invention, the drive device has an electric motor with a speed reduction mechanism, and the rotating shaft body is driven by the electric motor with a speed reducer. It is said.

  In the safety device of the present invention having such a configuration, upon receiving a command signal for entering or leaving the vehicle, the motor rotates by the number of rotations corresponding to the rotation angle of the immersion / protrusion of the stopper member. The rotational driving force of the motor is decelerated and transmitted to the rotating shaft body, and this driving force rotates the stopper member attached to the rotating shaft body so as to be immersed or protruded. When the immersion or protrusion is performed up to a predetermined position, the motor stops its rotation by a signal notifying that.

  When the motor is stopped, a torque greater than a predetermined value is required to rotate the motor when de-energized. Therefore, the position is maintained unless the rotating shaft is forcibly rotated with a torque greater than the predetermined value. it can. Actually, the drive force transmission mechanism is also accompanied by mechanical loss due to frictional force, so the predetermined value is further increased. Moreover, since the stopper member is rotated by the rotational force of the motor when the motor is energized, the stopper member is rotated by the turning force of the motor to start re-operation in either the immersive or protruding direction, and thus has no top dead center or bottom dead center. The operation is always performed quickly and smoothly by receiving a constant rotational driving force.

  In the present invention, the rotation shaft body is connected to a motor with a speed reducer via a sliding contact rotation mechanism, and the sliding contact rotation mechanism includes two sliding contact members that rotate relative to each other, and both A spring member that press-contacts the sliding contact member. When the electric motor is energized, the drive force from the electric motor side to the rotating shaft body side is transmitted based on the biasing force of the spring member, and the electric motor is de-energized. Sometimes, the rotation on the rotation shaft body side is not transmitted to the electric motor side by the sliding contact rotation between the two sliding contact members. Alternatively, it is preferably controlled by the control device so that it is driven to rotate only when it receives a movement command to the protruding position and is not rotated after the movement is completed.

  When the lift safety device for a multi-story parking lot stops operating due to a malfunction in the electrical system, etc., when the stopper member is pushed in manually, the rotating shaft body to which the stopper member is attached resists the spring pressure. By the sliding contact rotation between the sliding contact members, the stopper member moves to the immersion position. Even if the pressing force is released, torque greater than the predetermined value is required to rotate the motor when de-energized. Therefore, the rotating shaft does not rotate unless torque greater than the predetermined value is applied after releasing the pressing force. The immersion position is maintained as it is without moving.

  In the present invention, as described above, the rotating shaft body to which the stopper member that rotates between the immersion position and the protruding position is attached is driven to rotate by the motor with a speed reducer. Even in this case, a constant rotational driving force can be transmitted to the stopper member, so that the stopper member operates quickly and very smoothly.

  Further, according to the present invention, unless the torque exceeding a predetermined value required to rotate the motor when the motor is de-energized is applied to the motor shaft, the immersion or protruding position is maintained as it is. No energy is required to keep the protruding position. That is, there is no need to maintain its position against the spring force with electric power or other means, such as when using a solenoid. Further, in the present invention, since the immersion or movement to the protruding position is caused by the rotation of the motor with a speed reducer, there is no impact sound as in the case of a solenoid, and it operates silently.

  Furthermore, in the present invention, if the stopper member is connected to the motor with a speed reducer through a sliding contact rotation mechanism having two sliding contact members and a spring member, a reciprocating slider crank mechanism such as Without sliding the top dead center and the bottom dead center, the two stoppers are slidably rotated against the spring pressure of the spring member when the protruding stopper member is manually pressed in the event of a malfunction. Then, the stopper member is moved to the immersion position. The immersion position is maintained as it is by the motor with the reduction gear, and the trouble can be easily dealt with.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view of the present embodiment device as viewed from the front side and from above, and FIG. 2 is a perspective view of the device from the back side and from below. 3A is a rear view of the apparatus shown in FIGS. 1 and 2, and FIG. 3B is a rear view with a part omitted. FIG. 4 is an enlarged cross-sectional view of the main part of the apparatus.

  1 and 2, a mounting member 1 attached to a guide member (not shown) for guiding a pallet of a multilevel parking garage is made by combining a plurality of L-shaped members, and is a base 1A that extends vertically. And a flange portion 1B protruding at the upper end thereof. An attachment hole 1B-1 is formed in the flange portion 1B, and is attached to the guide member by a bolt or the like. The attachment member 1 can be attached to the guide member by appropriately providing attachment means other than the attachment hole 1B-1 shown in the drawing.

  As shown in FIG. 4, the base portion 1 </ b> A of the mounting member 1 is formed with a support hole portion penetrating in the plate thickness direction, and a cylindrical bearing bush 2 is provided on the inner diameter surface of the support hole portion. It has been. The bearing bush 2 supports the rotating shaft 3 so as to be capable of reciprocating rotation about its axis. The rotating shaft 3 protrudes left and right from the bearing bush 2, and a stopper member 4, which will be described later, rotates integrally with the rotating shaft 3 at the right portion of the rotating shaft 3. Is attached. The rotating shaft 3 is fitted in a circumferential groove formed in a portion protruding leftward from the base 1A of the mounting ring 1 and a stop ring 5 fitted in a circumferential groove formed in the right end portion thereof. The position of the stopper member 4 in the axial direction of the rotating shaft 3 is determined by another stop ring 6. A washer 7 is interposed between the left stop ring 6 and the base 1A. Further, between the base 1A and the stopper member 4, a seal ring 2A is provided on the rotating shaft body 3, and the rotating shaft body 3 and the bearing bush 2 are protected from the outside. The seal ring 2 </ b> A has a seal lip that can slide on the plate surface of the stopper member 4.

  The rotating shaft 3 has a small-diameter intermediate portion 3A in a step shape on the left side, and a shoulder portion 3B is formed in the step portion. The rotating shaft 3 has a screw portion 3C adjacent to the intermediate portion 3A, and further has a small diameter portion 3D forming a small diameter cylindrical outer peripheral surface on the left side.

  A gear 8 that meshes with a worm, which will be described later, is supported on the intermediate portion 3A of the rotating shaft 3. The gear 8 is supported so as to be slidable and rotatable with respect to the intermediate portion 3A. That is, the intermediate portion 3A and the gear 8 function as a sliding contact member. The intermediate portion 3A is provided with a leaf spring 9 as a spring member in contact with the side surface of the gear 8 and a washer 10 for clamping the leaf spring. By tightening a nut 11 screwed into the screw portion 3C, the leaf spring 9 9 is pinched by the gear 8 and the washer 10 to generate an axial force, and presses the gear 8 against the shoulder 3 </ b> B of the rotating shaft 3. Therefore, when the gear 8 rotates, the rotational driving force is transmitted to the rotating shaft 3 through the shoulder 3B, and the rotating shaft 3 rotates. The spring member is not limited to a leaf spring, and may be another type of spring such as a coil spring.

  A frame-shaped support member 12 made by bending a metal plate is attached to the left surface of the base 1A of the attachment member 1. The support member 12 is bent at the ends of the support part 12A parallel to the plate surface of the base part 1A, the upper leg part 12B and the lower leg part 12C facing the base part 1A, and the upper leg part 12B and the lower leg part 12C. And mounting portions 12B-1 and 12C-1 parallel to the plate surface of the base portion 1A. The support member 12 is fixedly attached to the base portion 1A at the attachment portion 12C.

  An opening is formed in the support portion 12 </ b> A of the support member 12, and the small diameter portion 3 </ b> D of the rotating shaft body 3 passes through the opening. A gap is formed between the small diameter portion 3D and the inner edge of the opening, and the small diameter portion 3D is not in contact with the inner edge of the opening. A cam plate 13 made by processing a metal plate is attached to the small diameter portion 3D. A key member 14 is interposed between the cam plate 13 and the small diameter portion 3D, and the cam plate 13 rotates integrally with the small diameter portion 3D. 2 and 3A, the cam plate 13 has two convex cam portions, that is, a main cam portion 13A and a sub cam portion 13B at positions separated in the circumferential direction. ing. A set of main switches 15A and a set of sub-switches 15B are arranged on the support portion 12A corresponding to the respective circumferential end portions of the main cam portion 13A and the sub-cam portion 13B. The relationship between the cam portions 13A and 13B and the switches 15A and 15B will be described later again.

  A motor 16 with a reduction gear as a drive device is supported on the upper leg portion 12B of the support member 12. The motor 16 with a speed reducer has a motor part 16A and a speed reducing part 16B, and a worm 17 extending on the same axis is attached to an output shaft body 16B-1 of the speed reducing part 16B. As can be seen from FIG. 3 (B) corresponding to FIG. 3 (A) and omitting the support member 12 from FIG. 3 (A), the worm 17 meshes with the gear 8 described above. Yes. The output rotation of the motor 16 with a speed reducer is decelerated by the reduction ratio between the worm 17 and the gear 8 to turn the rotating shaft 3, and the reduction ratio is appropriately determined. The motor 16 with a speed reducer rotates forward and backward in response to a command signal.

  Next, the positional relationship between the cam portions 13A and 13B and the switches 15A and 15B will be described. The main cam portion 13A and the sub cam portion 13B are formed by arc portions protruding in the radial direction from the basic circle of the cam portion within a range of predetermined angles α and β in the circumferential direction (see FIG. 3A). . In this embodiment, the angle α <the angle β, but the angle α may be equal to the angle β. The main cam portion 13A is a cam portion for operating the switch 15A to stop the rotation of the motor, and the sub cam portion 13B is a cam portion for detecting the stop timing of the motor by the operation of the switch 15B.

  The switch 15A is a set of two switches 15A-1 and 15B-2, and both the switches 15A-1 and 15A-2 are arranged at positions that are slightly larger than the angle α of the corresponding main cam portion 13A. Yes. Therefore, when the cam plate 13 rotates to one side and starts to contact one of the switches 15A-1 and 15A-2 at one circumferential end of the main cam portion 13A, the other circumferential end is the other. It is removed from the switch and is not in contact with the other switch. Such a relationship is the same for the sub cam portion 13B and the two switches 15B-1 and 15B-2. However, in this embodiment, since the angle β of the auxiliary cam portion 13B is larger than the angle α of the main cam portion 13A, the main cam portion 13A is switched to the switch 15A-1 at one end (or the other end) in the circumferential direction. The sub cam portion 13B comes into contact with the switch 15B-1 (or switch 15B-2) at a timing slightly earlier than the time of contact with the switch 15A-2.

  The stopper member 4 attached to the other end of the rotary shaft 3 having such a plate cam 13 attached to one end in the axial direction is also shown in FIG. 1 (or see FIGS. 3A and 3B). As can be seen, the lever member extends vertically and is attached to the rotating shaft 3 at an intermediate position.

  The stopper member 4 is formed with a stopper surface 4A as a locking portion at the upper end edge, and is closer to one end of the stopper surface 4A (from the right end in FIG. 1 to the left end in FIGS. 3A and 3B). The regulated protrusion 4B is provided on the surface. Further, a regulated recess 4C is formed at the lower edge portion. The stopper member 4 reciprocates around the axis of the rotation shaft 3 by the same angle as the rotation shaft 3, but the restricting portions 18 </ b> A and 18 </ b> B that limit the rotation angle are provided on the mounting member 1. . The restricting portion 18A comes into contact with the restricted protrusion 4B to limit the turning angle with respect to the rotation in one direction, and the restricting portion 18B comes into contact with the restricted recess 4C and turns in the other direction. The rotation angle is limited.

  In FIG. 1 (or FIG. 3 (A), (B)), when the attachment member 1 is installed in the guide member of a multilevel parking lot, the position of one side end surface 1A-1 of the base 1A of the attachment member 1 is If the position of the guide member coincides with the position of the guide surface, when the stopper member 4 rotates in one direction together with the rotating shaft 3, the stopper surface 4A protrudes from the position of the guide surface, and the pallet Can be received by the stopper surface 4A (the controlled recessed portion 4C is in contact with the restricting portion 18B), and when the stopper surface 4A is rotated in the other direction, the stopper surface 4A sinks from the position of the guide surface. Thus, the pallet is allowed to pass (the regulated protrusion 4B is in contact with the regulating portion 18A).

  Next, the operation of the apparatus of this embodiment having such a configuration will be described.

  (1) In order to allow the stopper member 4 to pass through the pallet at the time of entry / exit of the automobile, it is necessary to rotate the stopper member from the guide surface toward the recessed position. In such a case, the command signal drives the motor 16 with a speed reducer in one direction (forward rotation) when an operator (such as a manager or driver) operates the operation panel in the multilevel parking lot. This rotation is transmitted to the gear 8 via the worm 17. Although this gear 8 is slidably rotatable with respect to the cylindrical outer peripheral surface of the rotating shaft 3, it is pressed against the shoulder 3 </ b> B of the rotating shaft 3 in the axial direction by the urging force of the leaf spring 9. Therefore, the rotation is transmitted to the rotary shaft 3 through the shoulder 3B.

  (2) Since the stopper member 4 rotates integrally with the rotating shaft 3, the stopper member 4 rotates in the immersion direction, and the stopper surface 4A is completely immersed from the guide surface (not shown). To do. At this time, the regulated protrusion 4B of the stopper member 4 is in contact with or close to the regulating portion 18A, so that it does not rotate any more even if any inconvenient force is applied.

  (3) When the rotating shaft body 3 rotates, the main cam portion 13A (see FIG. 3A) contacts one switch 15A-1, and the switch 15A-1 is connected to the motor 16 with a speed reducer. A stop signal is issued and the motor stops. At this time, the other switch 15A-2 is disconnected from the main cam portion 13A. When the motor is not energized, it does not rotate unless the output shaft body receives a torque greater than a predetermined value. Further, in this embodiment, since the worm 17 and the gear 8 are meshed with each other, a large reduction ratio is combined, so that the motor does not rotate forward or reverse unless the motor is restarted. The stop position is maintained.

  (4) On the other hand, the sub cam portion 13B is in contact with one switch 15B-1, and the switch 15B-1 notifies the stopper member 4 that the rotating shaft 3 has been rotated by a predetermined angle and the stopper member 4 has been immersed. To emit. This signal is used for display on the operation panel. Further, in the present embodiment, as described above, this signal is issued slightly earlier than the operation of the switch 15A-1 by the main cam portion 13A.

  (5) Next, when it is desired to rotate the stopper member 4 to the protruding position so as to function as the stopper member, the motor 16 with a speed reducer is reversely rotated by a command signal from the operation panel when the operator operates the operation panel. To do. This rotation is also transmitted from the worm 17 to the shoulder 3B of the rotating shaft 3 through the gear 8 and from the gear 8 through the leaf spring 9 in the same way as in the normal rotation. As the stopper member 4 moves, the stopper member 4 is also rotated and brought to the position shown in the position protruding from the guide surface (FIGS. 1, 3A, and 3B), and the stopper surface 4 is on standby at the position where it receives the pallet. To do. At this time, the restricted recess 4C is in contact with or close to the restricting portion 18B so that it does not rotate any more even if some inconvenient external force is applied.

  (6) When the rotating shaft 3 rotates in the reverse direction, the cam plate 13 also rotates in the reverse direction, so that the main cam portion 13A comes off from the switch 15A-1 and contacts the other switch 15A-2. . The other switch 15A-2 issues a stop signal to the motor 16 with a speed reducer, and the rotation of the motor stops. This stop position is also maintained for the same reason as the maintenance of the stop position during forward rotation.

  (7) Further, the sub cam portion 13B contacts the other switch 15B-2 and issues a signal notifying that the stopper member 4 has come to the protruding position. This signal is also issued prior to the stop signal of the one switch 15A-2.

  (8) In such a safety device, the stopper member 4 remains protruding due to a failure of the electrical system, etc., and if the immersion command is issued on the operation panel, it will not be immersed, or the operation panel itself will be damaged. Sometimes it is not immersive. In such a case, even if the pallet wants to pass through the position of the stopper member 4, the stopper member 4 cannot pass due to an obstacle. In such a case, in this embodiment, the operator only has to approach the position of the stopper member 4 and push the stopper member in the immersion direction. When the stopper member 4 is pushed in, the turning shaft body 3 turns against the frictional force based on the urging force of the leaf spring 9 by the pushing. The rotary shaft 3 rotates in sliding contact with the gear 8 and the gear 8 itself does not rotate. Thus, the stopper member is brought into the retracted position, and when the pushing force is released, the position is maintained by the meshing of the gear and the worm.

  The present invention is not limited to the illustrated example and can be modified.

  In the present invention, the worm and the gear meshing with the worm are not essential. If there is a motor that rotates at a very low speed, the output shaft of the motor with a speed reducer may be directly connected to the rotating shaft. However, such a motor is not common and often includes a gear for design reasons such as some reduction of speed and conversion of force transmission direction.

  Next, when the cam is used for controlling the motor, the main cam portion and the sub cam portion may be formed in the same angle range. In this case, the time when the motor is stopped is the same as when the completion of rotation of the predetermined angle of the stopper member is detected.

  Furthermore, the sub cam portion and the switch cooperating therewith are not essential and can be omitted. In order to detect the rotation of the stopper member, the signal from the switch at the main cam portion can be used as it is for display on the operation panel.

It is the perspective view which looked at the safety device as one embodiment of the present invention from the front side and the upper part. 1 is a perspective view of the device as viewed from the back side and from below. 3A is a rear view of the apparatus shown in FIGS. 1 and 2, and FIG. 3B is a rear view with a part omitted. FIG. 3 is an enlarged cross-sectional view of a main part of the apparatus of FIGS. 1 and 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting member 3 Rotating shaft 3B Shoulder part 4 Stopper member 4A Locking part (stopper surface)
8 Gear 9 Spring member (leaf spring)
16 Motor with reduction gear 17 Warm

Claims (2)

  An attachment member attached to a guide member formed with a guide surface for raising and lowering a pallet that is raised and lowered by a lift in a multi-story parking lot; a rotation shaft body rotatably supported around the axis by the attachment member; A stopper member which is held by the rotating shaft body so as to rotate together with the rotating shaft body and extends in the radial direction and has a locking portion which can be locked to the pallet on the front end side, and the rotating shaft body reciprocate by a predetermined angle. In the lift safety device for a multi-story parking garage having a driving device that rotates and reciprocates the locking portion of the stopper member between the immersion position and the protruding position with respect to the guide surface, the driving device includes a speed reduction mechanism. A lift safety device for a multilevel parking garage characterized by having an electric motor with a rotating shaft and being driven by the electric motor with a speed reducer.   The rotation shaft body is connected to a motor with a speed reducer via a sliding contact rotation mechanism, and the sliding contact rotation mechanism includes two sliding contact members that rotate relative to each other and both sliding contact members. A spring member that is brought into pressure contact, and when the electric motor is energized, the driving force is transmitted from the electric motor side to the rotating shaft body side based on the biasing force of the spring member, and when the electric motor is not energized, the rotating shaft The rotation on the body side is not transmitted to the electric motor side due to the sliding contact rotation between the two sliding contact members, and the electric motor has the stopper member locking portion to the retracted position or the protruding position. The multi-level parking lot lift safety device according to claim 1, wherein the lift safety device is controlled by a control device so as to rotate only when a movement command is received and not to rotate after the movement is completed.

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