JP4993377B2 - Parking equipment - Google Patents

Description

  The present invention relates to a parking apparatus, and more particularly to a drive mechanism for translating a pallet on which a vehicle is placed.

  A structure as shown in FIG. 6 is known as a pallet driving mechanism of a parking apparatus in which a pallet on which a vehicle is mounted moves in parallel. FIG. 6A is a top view, and FIG. 6B is an enlarged side view seen from the direction of the arrow 600. FIG. 6 shows a pallet 601 on which a vehicle is placed. Wheels 602a to 602c are fixed to the pallet 601 in a rotatable state. The wheels 602a and 602b can be rolled on the rail 603, and the wheels 602c and 602d can be rolled on the rail 604.

  A sprocket 605 that functions as a pinion gear is fixed to the shaft of the wheel 602a, and the sprocket 605 meshes with a non-slip chain 606 that functions as a rack. The anti-slip chain 606 is placed on the skeleton structure (or installation surface) 607 of the parking device, and both ends (not shown) are fixed to the skeleton structure 607 of the parking device. The shaft of the wheel 602 a is rotatably supported by the bearing portion 608, and the bearing portion 608 is fixed to the lower surface of the pallet 601. A motor 609 incorporating a gear mechanism is fixed on the top surface of the pallet 601, and the driving force of the motor 609 is transmitted to the gear 612 fixed to the rotation shaft of the wheel 602 a via the gear 610 and the drive chain 611.

  According to this mechanism, when the motor 609 is rotated, the driving force is transmitted through the drive chain 611, and the wheel 602a and the sprocket 605 are rotated. As the wheel 602a rotates, the pallet 601 moves on the rails 603 and 604. When the movement of the pallet 601 starts or ends, there is a case where the driving force or the braking force is not transmitted from the wheel 602 a to the rail 603 and the wheel 602 a slides with respect to the rail 603. At this time, a driving force or a braking force acts on the anti-slip chain 606 from the sprocket 605 to prevent the wheel 602a from slipping. In this structure, the weight of the pallet 601 is supported by the wheels 602a to 602d, and the sprocket 605 does not bear a load, but exerts a driving force or a braking force supplementarily when the wheel 602a slips. When the motor 609 is stopped, the movement of the pallet 601 on the rail 603 is suppressed by the sprocket 605 meshing with the anti-slip chain 606. As a configuration as outlined above, for example, a technique described in Patent Document 1 is known.

Japanese Patent Application Laid-Open No. 2004-2111294

  The structure shown in FIG. 6 can generate a driving force for effectively moving the pallet horizontally with a simple structure, but it varies depending on the meshing relationship between the sprocket and the non-slip chain and the friction state of the wheel during operation. There is a problem that sound is generated. In order to suppress this abnormal noise, it is effective to reduce the engagement between the sprocket and the non-slip chain, that is, to reduce the depth at which the sprocket teeth mesh with the chain. However, if the sprocket and the non-slip chain are made shallower, a force in the extension direction of the anti-slip chain is applied to the pallet. The sprocket may come off the chain and the pallet may move. That is, the regulation force that suppresses the movement of the pallet is weakened.

  As a method of solving this problem, a separate pallet movement prevention mechanism can be considered. However, since it is necessary to prepare a separate device, there is a problem that costs increase. Accordingly, an object of the present invention is to provide a parking apparatus having a drive mechanism for performing parallel movement of a pallet that can suppress the generation of abnormal noise during operation without incurring an increase in cost.

  The invention according to claim 1 is a skeleton structure, a pallet that can move horizontally with respect to the skeleton structure, and on which a vehicle can be placed, and a wheel that is rotatably fixed to the pallet. And a pulley fixed to the pallet so as to be rotatable, and a linear member that is stretched in the direction of the horizontal movement, is wound around the pulley in a part thereof, and both ends thereof are fixed to the skeleton structure. And a motor fixed to the pallet and capable of rotating the pulley.

  In the first aspect of the present invention, the skeletal structure refers to a structure constituting the parking device, or a base or a structure on which the parking device is installed. A pallet is a member having a surface on which a vehicle is placed. Wrapping means winding and hanging. The number of times of winding is not limited to one, and may be multiple. A linear member means a flexible wire-like member that can be wound around a pulley. As this member, a metal wire or a wire using carbon fiber can be used. The fixing of the linear member to the skeleton structure may be direct or indirect.

  According to the first aspect of the present invention, the weight of the pallet or the weight of the pallet on which the vehicle is placed is supported by the wheels. Since the flexible linear member is wound around the pulley, a large frictional force is generated between them. Due to this frictional force, when the pulley rotates, the pulley moves around the linear member while being wound around the linear member, and moves in the stretched direction with respect to the linear member. Since the pulley is fixed to the pallet so as to be rotatable, the moving force of the pulley generates a driving force for the pallet to move along the direction in which the linear member is stretched.

  According to this principle, the driving force is transmitted not by the meshing of the sprocket and the chain but by the frictional force acting between the pulley and the linear member wound around the pulley. For this reason, generation | occurrence | production of unusual noises, such as a squeaking sound unavoidable in the transmission of the force using mesh | engagement with a sprocket and a chain, are suppressed. In addition, the invention according to claim 1 has a simple component configuration and can reduce costs.

  Furthermore, according to the first aspect of the present invention, the pallet moves against the force in which the pallet tries to move in the direction in which the linear member is stretched by the frictional force acting between the pulley and the linear member wound around the pulley. Since the drag force is generated, the effect of preventing the pallet from moving in the direction in which the linear member is stretched by the external force is high. This effect can be obtained in the same manner whether or not a vehicle is on the pallet.

  The linear member only has to be substantially coincident with the moving direction of the pallet when viewed from the direction of the upper surface or the lower surface of the pallet. Here, “substantially coincide” means that the angle between the directions is within 5 degrees, preferably within 3 degrees, and more preferably within 1 degree. The movement direction of the pallet may be a horizontal direction, and the direction includes a left-right method, a front-rear direction, and an oblique direction as seen from the vehicle entry direction.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, tension is given to the linear member. According to invention of Claim 2, tension | tensile_strength is given to a linear member and, thereby, a frictional force can be worked effectively between a linear member and a pulley. In the present invention, since the linear member is wound around the pulley, the greater the tension acting on the linear member, the greater the frictional force, and the driving force for horizontally moving the pallet by the pulley and the pallet moving horizontally. The static force to prevent it from becoming stronger. Therefore, the superiority of the first aspect can be further enhanced by applying tension to the linear member. The tension can be applied by supporting a linear member via a spring, an elastic member, a hydraulic piston, etc., a structure in which these members are interposed in a part of the linear member, or the linear member itself. The example which comprises with a certain material can be given.

  The invention described in claim 3 is characterized in that one end or both ends of the linear member are fixed to the skeleton structure via a member that generates an elastic force. According to invention of Claim 3, tension | tensile_strength can be effectively given with respect to a linear member.

  ADVANTAGE OF THE INVENTION According to this invention, the parking apparatus which has a drive mechanism for performing the parallel movement of the pallet which can suppress generation | occurrence | production of the noise at the time of operation | movement without incurring cost increase can be provided.

(Configuration of the embodiment)
FIG. 1 is a top view (A) and a partial side view (B) showing an embodiment of the present invention. That is, a state in which a part of FIG. 1A is viewed from the direction of the arrow 100 is shown in FIG. FIG. 1 shows a pallet 101 on which a vehicle is placed. FIG. 1 shows a state where no vehicle is placed on the pallet 101.

  The outline of the present embodiment will be briefly described below. As shown in FIG. 1, a pallet 101 on which a vehicle is placed is supported by four wheels 102 a to 102 d so as to be movable on rails 103 and 104. A pulley 105 driven by a motor 109 fixed to the pallet 101 on which the vehicle is placed is wound around a metal wire 106 stretched in a direction in which the pallet 101 traverses. When the motor 109 is rotated, the pulley 105 is rotated, and a force for moving the pulley 105 so as to be transmitted through the metal wire 106 is generated, which becomes a driving force for moving the pallet 101.

  Hereinafter, this embodiment will be described in detail with reference to the drawings. As shown in FIG. 1, the pallet 101 is a steel-like plate-like member reinforced by a girder not shown. Although not shown in the figure, even though it is a plate-like member, the part on which the vehicle wheel is placed is partially concave and has an unevenness or bent structure such as a bent edge. have. In the example of FIG. 1, the vehicle (not shown) moves onto the pallet 101 from the direction of the arrow 116 when entering the pallet 101. Further, when the vehicle placed on the pallet 101 leaves, the vehicle moves from the pallet 101 in the direction opposite to the arrow 116. The horizontal movement of the pallet 101 using the drive mechanism using the present invention is in the direction of the arrow 117. Since the movement in this direction is a movement in a direction orthogonal to the loading / unloading direction of the vehicle, it is referred to as traversal.

  Wheels 102 a to 102 c are fixed to the pallet 101 in a rotatable state. The wheels 102a and 102b are in a state where they can roll on the rail 103, and the wheels 102c and 102d are in a state where they can roll on the rail 104. Each wheel has a flange (flange) on both sides, and has a function of supporting the pallet 101 so that it can move on the rails 103 and 104 and not come off from the rails 103 and 104.

  A drive mechanism for moving the pallet 101 on the rails 103 and 104 is disposed near the wheel 102a. Other wheels are not provided with a drive mechanism. Hereinafter, this drive mechanism will be described. A tooth gear 112 and a pulley 105 are fixed to the shaft 113 of the wheel 102a. The shaft 113 is rotatably supported by the bearing portion 108, and the bearing portion 108 is fixed to the lower surface of the pallet 101. The structure for receiving the wheel shaft is the same for the wheels 102b to 102d.

  The drive chain 111 meshes with the tooth gear 112, and the other of the drive chain 111 with respect to this portion meshes with the tooth gear 110 fixed to the rotating shaft of the motor 109 incorporating the gear mechanism. The motor 109 is fixed to the pallet 101. The wheel 102a rests on the rail 103 fixed to the H-shaped steel 107 constituting the skeleton structure of the parking apparatus.

  The pulley 105 has flanges 105a on both sides, and a metal wire 106, which is an example of a linear member, is wound around the pulley 105. As the metal wire 106, for example, when the diameter of the portion around which the wire of the pulley 105 is wound is 100 mm, the material is steel, the diameter is 5 mm, and the radius of curvature that can be bent without impairing flexibility is 10 times or less the wire diameter. Things are used. A linear member (hereinafter referred to as a wire) wound around the pulley 105 is a material that can be wound around the pulley and flexibly deforms when the pulley 105 is rotated. It must be strong enough to withstand the driving force that moves the In this example, the metal wire 106 is wound around the pulley 105 once. The number of turns may be two or more.

  FIG. 2 is a conceptual diagram showing a state of FIG. 1 viewed from the right direction. FIG. 2 shows a state in which a vehicle (in this case, a passenger car) 118 is placed on the pallet 101. In this case, a state where the vehicle 118 is parked forward on the pallet 101 is shown. In this example, as shown in FIG. 2, the metal wire 106 is stretched in a direction coinciding with the transverse direction of the pallet 101 indicated by the arrow 117.

  FIG. 3 is a schematic view of the whole as viewed from above, and is a conceptual diagram showing a support structure at both ends of the metal wire. The viewpoint in FIG. 3 is the same as the viewpoint in FIG. As shown in FIG. 3, both ends of the metal wire 106 are supported in a state where tension is applied by coil springs 119 and 120 which are members that generate elastic force. That is, one end of the metal wire 106 is fixed to the rail 103 by the L-shaped bracket 121 via the coil spring 119, and the other end of the metal wire 106 is fixed to the rail 103 by the L-shaped bracket 122 via the coil spring 120. ing. Since the rail 103 is fixed to the skeleton structure of the parking device, both ends of the metal wire 106 are fixed to the skeleton structure of the parking device via coil springs. In this support structure, the coil springs 119 and 120 are loaded in a tensioned state, and tension is applied to the metal wire 106 by the elastic force.

  In FIG. 3, another pallet 201 is shown. The drive mechanism of the pallet 201 is the same as that of the transverse pallet 101. In this case, as shown in the drawing, the two pallets 101 and 102 share one metal wire 106. Here, an example in which there are two pallets is shown, but an arbitrary number is selected according to the scale of the parking device.

  1 to 3, the weight of the pallet 101 (or a vehicle mounted thereon) is supported by wheels 102a, 102b, 102c and 102d, and the pulley 105 is connected to the pallet 101 (or to it). In addition, it does not substantially bear the weight of the vehicle mounted on it. The wheel 102 a is driven by a motor 109 and exerts a driving force for causing the pallet 101 to traverse on the rail 103. According to this structure, the traverse control of the pallet 101 is mainly performed by the wheel 102 a, and the traverse control of the pallet 101 by the pulley 105 is performed when the wheel 102 a slides on the rail 103.

  In the above description, the mechanism for moving the pallet 101 in the horizontal direction is described as the mechanism for moving the pallet 101 in the horizontal direction. However, in the same configuration, the pallet 101 moves in the direction orthogonal to the direction of the arrow 117. It is also possible to apply to.

(Operation of the embodiment)
Hereinafter, an example of the operation of the configuration shown in FIGS. 1 to 3 will be described with reference mainly to FIG. 1. When the motor 109 is rotated, the rotational driving force is transmitted to the shaft 113 via the drive chain 111, and the shaft 113 rotates. By this rotation, the pulley 105 in a state where the wheel 102a and the metal wire 106 are wound is rotated. Since the metal wire 106 is more elastically supported by the coil springs 119 and 120 shown in FIG. 3, the driving force for moving the pallet 101 is mainly exerted by the wheels 102a. At this time, the wheel 102 a may slide with respect to the rail 103 due to a high load state such as when the pallet 101 starts to move or when the pallet 101 starts moving or due to rainwater, oil, dust, or the like adhering to the wheel 102 a or the rail 103. is there. In such a case, the driving force or braking force by the pulley 105 is exhibited.

  That is, since the metal wire 106 is given tension and is tightly wound around the pulley 105, the pulley 105 is rotated without sliding with respect to the metal wire 106. Therefore, when the wheel 102a slips with respect to the rail 103, the pulley 105 rotates and tries to move so as to travel along the metal wire 106 in the direction in which the metal wire 106 is stretched (direction of the arrow 117). At this time, the direction of the arrow 117 is determined depending on the direction of rotation of the motor 109. That is, the pulley 105 tends to move in any direction of the arrow 117 in FIG. 1 (upward or downward in FIG. 1) while being wound around the metal wire 106 and rotating in a single winding state.

  Since the pulley 105 is supported by the pallet 101 at the bearing portion 108, the force to move the metal wire 106 of the pulley 105 becomes a driving force, and the pallet 101 moves on the rail 103 and the rail 104. Force is generated. In addition, a braking force that suppresses the movement of the pallet 101 is generated as a reverse action of the principle of generating this driving force. The driving force and braking force generated by the pulley 105 prevent the wheels 102a from slipping, and the traverse control of the pallet 101 can be performed accurately.

(Modification of embodiment)
In the example shown in FIGS. 1 to 3, driving is performed at one of four wheel portions. However, a configuration in which driving is performed in two or more portions is not excluded. A plurality of wires and pulleys may be provided, and each pulley may be wound around each wire. In order to increase the frictional force acting between the pulley and the wire, a material having a large friction coefficient may be interposed. The cross-sectional shape of the pulley or wheel may be a shape with a depressed center. In particular, the wheel may have a structure in which the collar portion is disposed only on one side.

  A wire tension as shown in FIG. 4 is also possible. FIG. 4 shows an example in which the metal wire 401 is stretched in a loose mountain shape, not horizontal, when the pallet is viewed from the direction in which the vehicle 118 enters. In this case, the state seen from above in FIG. 4 is basically the same as that in FIG. In this example, the metal wire 401 is fixed to the columns 404 and 405 that are the skeleton structure of the parking apparatus via the coil springs 402 and 403. The drive mechanism 406 is the same as the example shown in FIG. The same reference numerals as those in FIG. 1 are the same as those in FIG.

  The drive mechanism may have a structure as shown in FIG. FIG. 5 is a schematic top view showing a schematic configuration of another embodiment. The viewpoint in FIG. 5 is the same as that in FIG. 1, and the reference numerals that are not specifically described are the same as those in FIG. In the example shown in FIG. 5, the motor 501 is fixed to the back side of the pallet 101 so that the rotation shaft 502 is perpendicular to the surface of the pallet 101.

  A tooth gear 503 is fixed to the rotating shaft 502 of the motor 501, and a drive chain 504 is engaged therewith. A pulley support plate 505 projects from the pallet 101 toward the rail 103, and the pulley 506 is supported in a rotatable state there. A tooth gear (not shown) is fixed to the shaft 507 of the pulley 506, and a drive chain 504 is engaged with the tooth gear. Further, a metal wire 508 similar to that in the case of FIG. 1 is wound around the pulley 506 by one turn.

  When the motor 501 rotates, the driving force is transmitted by the drive chain 504, and the pulley 506 rotates. At this time, on the basis of the same principle as in FIG. 1, a force that the pulley 506 tries to move in the developing direction of the metal wire 508 (upward or downward in FIG. 5) works. This force acts on the pallet 101 via the pulley support plate 505, and becomes a driving force for the pallet 101 to move upward or downward in the figure. That is, by rotating the motor 501, the pallet 101 can be moved on the rails 103 and 104 upward or downward in the figure. In this example, each wheel 102a-102d only supports the weight of the pallet (or in addition to the weight of the vehicle) in a movable state on the rail, and the wheels are not driven.

  As a device for applying tension to the wire (tension generating device), a device using a spring mechanism or an elastic member that is not a coil spring, a cylinder mechanism that exerts a force to shrink when pulled, an electromagnetic solenoid, or a shape memory alloy is used. An actuator, a mechanism using a weight, or the like can also be used. Further, the wire itself may be made of an elastic material (for example, hard rubber). However, since the force which moves a pallet is absorbed when a wire is extended, the attention regarding that point is required. Further, the device for applying tension to the wire may be at one end instead of at both ends of the wire. Further, the device for applying tension may be in the middle of the wire instead of the end. FIG. 1 shows a circular cross-sectional shape of the wire, but the cross-sectional shape of the wire may be elliptical or rectangular. Moreover, a wide belt-like thing can also be utilized as a wire. The same applies to the case where the material of the wire is not metal. Further, in the configuration shown in FIG. 1, the wheel 102 a is configured to be rotatable with respect to the shaft 113, and the wheel 102 a has only the role of allowing its movement while supporting the load of the pallet 101 without participating in the driving force. It can also be set as the structure which fulfills.

  In order to increase the frictional force between the pulley and the wire, a configuration may be adopted in which rubber is wound (or covered) around a contact portion between the pulley and the wire. In addition, for the same purpose, unevenness or jaggedness may be formed at the contact portion of the pulley with the wire.

(Advantages of the embodiment)
According to the structure shown in FIGS. 1-5, since it is transmission of the driving force by the frictional force which acts not between meshing of a sprocket and a chain but between a pulley and a wire, generation | occurrence | production of abnormal noise can be suppressed. Further, by applying tension to the wire, a frictional force can be effectively applied between the pulley and the wire, and the driving force of the pallet can be obtained efficiently. Moreover, since the component configuration is simple, low cost and high reliability can be obtained.

  In addition, in the case of rack chain type, the sprocket teeth may slip over the chain roller if not firmly pressed from above. When the vehicle is on, the weight can be pressed down and this problem does not occur, but slippage is likely to occur only with the pallet. Therefore, in the rack chain type, the ability to prevent the pallet position shift due to the vehicle contact with the pallet edge or the like is not high. On the other hand, the wire type shown in the present embodiment can always prevent the pallet from being displaced with the same frictional force as long as the tension mechanism is effective. Therefore, it is possible to increase the ability to prevent the displacement of the pallet caused by the contact of the vehicle with the pallet edge.

  INDUSTRIAL APPLICABILITY The present invention can be used for a parking apparatus having a mechanism for moving a parking pallet horizontally.

It is the upper surface schematic and the enlarged side view which show the outline | summary of embodiment. It is a front schematic diagram which shows the outline | summary of embodiment. It is a top schematic diagram showing an outline of an embodiment. It is the front schematic which shows the outline | summary of other embodiment. It is the upper surface schematic which shows the outline | summary of other embodiment. It is the upper surface schematic and the enlarged side view which show the outline | summary of a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Pallet, 102a ... Wheel, 102b ... Wheel, 102c ... Wheel, 102d ... Wheel, 103 ... Rail, 104 ... Rail, 105 ... Pulley, 106 ... Metal wire, 107 ... H-shaped steel, 108 ... Bearing part, 109 ... Motor 110 ... tooth gear, 111 ... drive chain, 112 ... tooth gear, 113 ... shaft, 118 ... vehicle, 119 ... coil spring, 120 ... coil spring.

Claims (3)

Skeletal structure,
A pallet capable of horizontal movement and on which a vehicle can be placed;
Wheels fixed to the pallet in a rotatable state;
A pulley fixed to the pallet in a rotatable state;
A linear member that is stretched in the direction of the horizontal movement, is wound around the pulley in a part thereof, and both ends thereof are fixed to the skeleton structure;
A parking device comprising: a motor fixed to the pallet and capable of rotating the pulley.   2. The parking apparatus according to claim 1, wherein tension is given to the linear member.   The parking apparatus according to claim 1, wherein one end or both ends of the linear member are fixed to the skeleton structure via a member that generates an elastic force.

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