JP2008265949A - Hanger device, and crane device provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hanger device capable of increasing hanging-up weight. <P>SOLUTION: In the hanger device 10 mounted to an arm of a crane device, gears provided with a pulley 11 wound with a belt 30 or a wire and two motors 12, 12 provided at both sides of the pulley 11 respectively and rotating the pulley 11 are mounted to rotation shafts of the respective motors 12, 12. At least one gear engagement part is mounted so as to be projected from respective surfaces of the pulley 11, the gear engagement part is engaged with the gear, and the pulley is rotated while interlocking with rotation of the motor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a crane apparatus for loading and unloading articles such as wheelchairs and luggage, for example, attached to the rear part of an automobile, and more particularly to a hanger apparatus attached to an arm of the crane apparatus.

  Conventionally, in a vehicle such as an automobile that can be equipped with a wheelchair, a wheelchair user or an assistant has carried the wheelchair by himself, but in recent years, a crane device has been installed in the vehicle, and this device is used. By doing so, the burden of storing work on the user or the like is reduced.

  In the case of a minivan type automobile, for example, as shown in FIG. 6, this type of crane apparatus 1 is attached to the floor surface inside the rear gate 2a in the rear compartment of the automobile 2, and the hanger device 1a at the tip thereof. Is pulled out rearward, and the wheelchair 3 is loaded and unloaded while the wheelchair 3 is suspended from the tip of the belt 1b extending downward from the hanger device 1a.

  Such a crane apparatus 1 is configured as shown in FIG. 7, for example. In FIG. 7, the crane apparatus 1 includes an upright crane shaft 4 extending substantially perpendicularly from the floor of the rear compartment of the automobile 2 described above, a hinge mechanism portion 5 provided at the upper end of the crane shaft 4, and the hinge. And an arm 6 supported by the mechanism unit 5 so as to be swingable around a rotating shaft 5a extending in the lateral direction.

  The crane shaft 4 is composed of a hollow cylindrical member, and the lower end thereof is fixedly held on the floor surface of the rear compartment (or trunk compartment) of the automobile.

  The hinge mechanism portion 5 includes a cylindrical shaft 5b that is nested in the crane shaft 4 and a horizontal flange portion 5c attached to the upper end of the shaft 5b. As a result, the hinge mechanism 5 is supported so that the shaft 5b is fitted into the crane shaft 4 so as to be swingable around the central axis of the crane shaft 4, and the horizontal flange portion 5c is By being in contact with the upper end, it is regulated with respect to the lower side. The shaft 5b of the hinge mechanism portion 5 is tightened by the screw shaft 9a of the handle knob 9 screwed into the screw hole 4a provided in the crane shaft 4, so that the shaft 5b swings around the central axis of the crane shaft 4. Deterred.

  The arm 6 is rotatably supported by a rotating shaft 5a provided in the hinge mechanism unit 5, and the hanger device 1a described above is attached to the tip thereof. Furthermore, the arm 6 has a hollow cylindrical lock member 7 centering on the rotation shaft 5a.

The lock member 7 can be fitted with a lock 8 provided on the hinge mechanism 5 at a stop position of the arm 6 with respect to the crane shaft 4, that is, at a use position A (shown by a solid line) and a storage position B (shown by a chain line). Two lock openings 7a and 7b are provided.
Further, the lock 8 is provided at the tip of a lock lever 8b supported so as to be swingable around a rotation shaft 8a parallel to the rotation shaft 5a with respect to the hinge mechanism portion 5, and is rotated counterclockwise in the drawing by a spring 8c. And a lock release lever 8d extending from the rotary shaft 8a to the substantially opposite side.

  Thus, when the lock 8 faces the lock openings 7a and 7b of the crane shaft 4, the lock 8 is fitted into the lock openings 7a or 7b and locked by the elasticity of the spring 8c, and the lock release lever 8d is By operating in the direction of arrow C, the lock 8 is released from these lock openings 7a or 7b and unlocked.

  FIG. 8 is a cross-sectional view taken along line BB in FIG. 7 and shows a cross section of the hanger device 1a. As shown in this figure, in the hanger device 1a, a motor 101 and a pulley 102 rotated by the motor 101 are attached to a bracket 103 fixed to the tip of the arm 6. In FIG. 8, the detailed configuration of the motor 101 is omitted, and only its outer shape is shown. One end of the belt 1b is fixed to the pulley 102, and the belt 1b is wound. The amount of the belt 1b drawn from the pulley 102 is rotated by rotating the pulley 102 forward or backward by the motor 101. Changes, and the hook 1c at the front end of the belt moves up and down.

  According to the crane apparatus 1 having such a configuration, in use, the lock 8 is fitted into the lock opening 7a and the arm 6 is positioned at the use position A indicated by a solid line in FIG. The mechanism unit 5 and the arm 6 can be swung around the central axis of the crane shaft 4.

  In this state, as a procedure for loading the wheelchair 3 outside the vehicle into the rear compartment of the vehicle using the crane device 1, first, the arm 6 is rotated to move the hanger device 1 a to a position above the wheelchair outside the vehicle. Then, the lifting belt 1b is pulled out from the hanger device 1a, and the wheelchair is hung on the hook 1c at the tip of the belt. Next, the motor 101 in the hanger device 1a is driven, the drawn belt 1b is wound around the pulley 102, and the wheelchair 3 is lifted. When the wheelchair 3 is lifted to a desired height, the rotation of the pulley 102 by the motor 101 is stopped, and the arm 6 is rotated while the height is maintained, and the wheelchair is put into the vehicle. Then, the pulley 102 is reversely rotated by the motor 101 to pull out the belt 1b from the hanger device 1a, and the wheelchair 3 is gradually lowered to land the wheelchair on the rear compartment floor of the automobile. When taking the wheelchair out of the vehicle, the reverse procedure described above may be performed. In this way, wheelchairs can be loaded and unloaded using the crane device 1.

On the other hand, when the arm 6 is retracted from such a use state, the user operates the lock release lever 8d with one hand as shown in FIG. 7 to move the lock 8 from the lock opening 7a. The arm 6 is lowered while supporting the hanger device 1a with the other hand, and the arm 6 is moved to the storage position B indicated by the chain line in FIG.
When the arm 6 reaches the storage position B, the lock 8 is fitted into the lock opening 7b based on the elasticity of the spring 8c, and the arm 6 is locked at the storage position B. Further, when the user tightens the handle knob 9, the hinge mechanism portion 5 and the arm 6 are fixed so as not to rotate with respect to the crane shaft 4.

  Further, when the arm 6 is pulled out to the use position A from such a stored state, the user loosens the handle knob 9 and operates the lock release lever 8d with one hand as shown in FIG. The lock 8 is removed from the lock opening 7b, and the hanger device 1a is lifted upward with the other hand. Then, the arm 6 is swung around the rotation shaft 5a and moved to the use position A. When the arm 6 reaches the use position A, the lock 8 is fitted into the lock opening 7a based on the elasticity of the spring 8c, so that the arm 6 is locked at the use position A.

Thus, in the conventional crane apparatus 1 shown in FIG. 7, the position of the arm 6 is switched from the storage position B to the use position A to be used for wheelchair unloading, and when not used, the arm 6 is lowered and stored. It is like that.
This type of crane apparatus is disclosed in Patent Document 1.
JP 2006-193304 A (FIGS. 3 and 4)

  However, in the conventional crane apparatus, since the motor 101 provided in the hanger apparatus 1a is one, it was not possible to lift a wheelchair or a luggage having a weight exceeding 30 kg. Considering the convenience of the user, it is desirable that the crane device can lift a load of about 50 kg.

  In the conventional hanger device 1 a, as shown in FIG. 9, a gear 105 is attached to the rotating shaft 101 </ b> A of the motor 101, and a female gear 106 that meshes with the gear 105 is attached to the pulley 102. However, the processing applied to the material when manufacturing such a female gear 106 is a difficult operation, and for example, it is necessary to perform injection processing. This increases the manufacturing cost. Further, reference numeral 108 shown in FIG. 9 is a gear guide provided in the motor 101. If such a gear guide 108 interferes with the female gear 106, the rotation of the motor 101 becomes an obstacle to the rotation of the female gear 106. 102 cannot be transmitted.

  This invention is created in view of the above point, and it aims at providing the hanger apparatus which can aim at the increase in lifting weight, and a crane apparatus provided with the same.

In order to achieve the above object, the present invention provides a hanger device attached to an arm of a crane device, a pulley for winding a belt or a wire, and two units each provided on both sides of the pulley and rotating the pulley And a motor.
In the hanger device of the present invention, the gear is attached to the rotating shaft of each motor, and at least one gear engaging portion is attached so as to protrude from each surface of the pulley, and the gear engaging portion engages with the gear and the motor. The pulley rotates in conjunction with the rotation.
The crane device of the present invention is characterized by comprising an upright crane shaft, an arm supported swingably at the upper end of the crane shaft, and a hanger device attached to the tip of the arm. Yes.

  According to the present invention, two motors are mounted as a power source for rotationally driving the pulleys, and the pulleys are rotationally driven by the two motors from both sides, so that compared to the conventional crane device 1 It becomes possible to load and unload heavier loads.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing a crane apparatus 20 equipped with a hanger apparatus 10 according to an embodiment of the present invention. The crane device 20 includes, for example, an upright crane shaft 4 that extends substantially vertically from an installation surface such as a floor surface of a rear compartment of an automobile, a hinge mechanism portion 5 provided at the upper end of the crane shaft 4, and the hinge mechanism portion. 5, an arm 6 supported so as to be swingable around a rotation shaft 5 a extending in the lateral direction, and a hanger device 10 attached to the tip of the arm 6.
Here, the crane shaft 4, the hinge mechanism portion 5, and the arm 6 are the same as or similar to the constituent members of the crane device 1 described in the background art, and thus description thereof is omitted.

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and shows a cross section of the hanger device 10. As shown in this figure, the hanger device 10 includes a pulley 11 that winds a belt 30, and two motors 12 and 12 that are provided on both sides of the pulley 11 and rotate the pulley 11.
A bracket 15 fixed to the tip of the arm 6 is provided in the cover 14 of the hanger device 10, and the pulley 11 is rotatably supported by the bracket 15 via bearings 16 and 16.

FIG. 3A is a plan view of the pulley 11, and FIG. 3B is a front view of the pulley 11. The pulley 11 includes a cylindrical center portion 11A, disc portions 11B and 11B provided coaxially with the center portion 11A at both ends in the axial direction of the center portion 11A, and outside the disc portions 11B and 11B. An annular bracket attaching portion 11C, 11C provided coaxially with the disc portion 11B, and a rod-like gear engaging portion 11D projecting outward from each bracket attaching portion 11C, 11C in parallel with the rotation axis; It has. One end of the belt 30 is fixed to the central portion 11A, and the belt 30 is wound around the central portion 11A and accommodated in a groove region α defined by the two disk portions 11B and 11B. The gear engaging portion 11D is attached by being partially embedded in the bracket attaching portion 11C. In FIG. 3A, three gear engaging portions 11D are provided on each surface. However, although not shown, the bracket mounting portion 11C has a plurality of gear engaging portions in a circle around the rotation axis. A plurality of holes for part mounting are opened.
In the pulley 11 configured in this manner, the bracket mounting portions 11C and 11C on both sides are mounted to the mounting holes 15A (see FIG. 2) of the bracket 15 via the bearings 16, and are rotatably supported by the bracket 15. The

  Each motor 12, 12 is attached to the bracket 15 so that its rotation axis is coaxial with the rotation axis of the pulley 11, and one motor is arranged on each side of the pulley 11. In FIG. 2, the detailed configurations of the motors 12 and 12 are omitted, and only the outer shape thereof is shown. These motors 12 and 12 are disposed in the cover 14 with their rotation shaft projecting surfaces facing each other, and have different directions. The rotation directions of the rotation shafts of these two motors 12 and 12 are the same as the pulley 11. It rotates in the same direction around the rotation axis of the pulley 11 to give the desired rotation. The motor 12 can be driven by controlling a forward rotation and a reverse rotation of the motor 12 by operating a switch (not shown). Moreover, the electric power feeding to each motor 12 is performed by connecting the electric wire (electric wire connected to the motor 12) with which the crane apparatus 20 is equipped to the wire harness of a vehicle, for example.

  FIG. 4 is a partial side view showing the motors 12 and 12 and particularly shows the periphery of the rotating shaft 12A. As shown in this figure, a gear 12B is attached to the rotating shaft 12A, and a gear guide 12C is provided in the vicinity thereof.

  In the hanger device 20 of the present embodiment, as shown in FIG. 5, a power transmission mechanism including the pulley 11 and the motor 12 is configured by engaging the gear engaging portion 11 </ b> D of the pulley 11 with the gear 12 </ b> C. In order to increase the coupling of the pulley 11 to the motor 12, the number of gear engaging portions 11D inserted into a plurality of holes (not shown) provided in the pulley 11 may be increased.

  In the crane apparatus 20 according to the present embodiment, one end of the belt 30 is fixed to the pulley 11 and the other end is fixed to the belt fixing portion 14B on the cover surface close to the belt insertion port 14A of the cover 14. A moving pulley 40 is provided on the belt 30 that spans the belt insertion port 14A and the belt fixing portion 14B of the hanger device 10, and the moving pulley is moved in the direction of arrow β in FIG. 40 moves up and down. A hook 41 is attached to the movable pulley 40 so as to hang down.

  The crane apparatus 20 according to the present embodiment is configured as described above. Like the conventional crane apparatus 1, the crane 6 is turned up and down by rotating the arm 6 and adjusting the pull-out amount of the belt 30 from the hanger apparatus 10. By moving, wheelchairs and luggage loaded on the hooks 41 can be loaded and unloaded.

  In this loading / unloading, the hanger device 10 according to the present embodiment has two motors 12 and 12 mounted as a power source for rotationally driving the pulley 11, and the pulley 11 has two motors 12 from both sides. Since it is rotationally driven by 12, it is possible to load / unload heavier loads and the like as compared with the conventional crane device 1. Thereby, the usefulness of the crane apparatus 20 is improved.

  Further, the pulley 11 is engaged with a gear 12B attached to the rotating shaft 12A of the motor 12 via a gear engaging portion 11D, and the gear engaging portion 11D is a female gear 106 (FIG. 9) in the conventional connection structure. Therefore, even if the motor 12 is provided with the gear guide 12C, the gear engaging portion 11D does not interfere with the gear guide 12C, and the rotational force of the motors 12 and 12 is reduced by the pulley 11. Is transmitted smoothly.

  Since the crane apparatus 20 uses the moving pulley 40, the load on the motors 12 and 12 can be reduced. Further, in the crane device 20 of the present embodiment, when the two motors 12 and 12 of the hanger device 10 are replaced with dedicated motors, for example, a motor for raising and lowering the glass of an automobile, the hanger device 10 can only be manufactured at low cost. In this case, it is possible to load and unload about 50 kg.

  As described above, the present invention can be implemented in various forms without departing from the spirit of the invention. For example, it is obvious that the hanger device of the present invention can be used as a hanger device for a crane device composed of other components. A hook may be attached to the tip of the belt instead of the movable pulley. The motor of the hanger device may be a motor that can be used for other purposes besides the glass raising / lowering motor of an automobile. In the present invention, a wire can be used instead of the belt. The number of gear engaging portions provided on both surfaces of the pulley is arbitrary. In addition to being mounted on a vehicle, the crane device of the present invention can be installed on a floor of a nursing facility, a hospital or the like, or mounted on a carriage or the like.

FIG. 1 is a view showing a crane device in which a hanger device is mounted on an embodiment of the present invention. It is the sectional view on the AA line of FIG. The pulley of the hanger apparatus which concerns on embodiment of this invention is shown, (A) is a top view, (B) is a front view. It is a partial side view which shows the motor which concerns on embodiment of this invention. It is a partial side view which shows the example of a connection structure of the motor and pulley which concern on embodiment of this invention. It is a perspective view which shows the conventional vehicle rear part. It is a figure which shows the conventional crane apparatus. It is the BB sectional view taken on the line of FIG. It is a partial side view which shows the example of a connection structure of the motor and pulley in the conventional hanger apparatus.

4 Crane shaft 5 Hinge mechanism 5a Rotating shaft 6 Arm 10 Hanger device 11 Pulley 11A Center portion 11B Disk portion 11C Bracket mounting portion 11D Gear engaging portion 12 Motor 12A Rotating shaft 12B Gear 12C Gear guide 14 Cover 15 Bracket 15A Mounting hole 16 Bearing 20 Crane device 30 Belt 40 Dynamic pulley 41 Hook

Claims (5)

A hanger device attached to an arm of a crane device,
A hanger device comprising: a pulley that winds a belt or a wire; and two motors that are respectively provided on both sides of the pulley and rotate the pulley. A gear is attached to the rotating shaft of each motor,
At least one gear engaging portion is attached so as to protrude from each surface of the pulley,
The hanger device according to claim 1, wherein the gear engaging portion engages with the gear, and the pulley rotates in conjunction with rotation of the motor.   The hanger device according to claim 1, wherein a moving pulley is provided on the belt or the wire.   The hanger device according to any one of claims 1 to 3, wherein the motor is a glass raising / lowering motor of an automobile.   An upright crane shaft, an arm that is swingably supported on an upper end portion of the crane shaft, and the hanger device according to any one of claims 1 to 4 attached to a tip portion of the arm. A crane apparatus characterized by that.

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