JP3926966B2 - Loading device fastening device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a load fastening device for fastening a load loaded on a loading means such as a loading platform or a pallet to the loading means with one touch.
[0002]
[Prior art]
When loading and transporting unstable loads such as two-wheeled vehicles, etc. on loading means such as car platforms, transportation equipment floors, transportation pallets, etc., hooking means such as hooks and wheels hooked to the loads are provided. In addition, a method of pulling and fixing a load from the periphery with a plurality of wires has been implemented.
[0003]
[Problems to be solved by the invention]
In the fixing method in which the load is pulled from the periphery with a plurality of wires, if all the wires can be tensioned at once, the fastening operation can be performed quickly and reliably. For this reason, an apparatus that winds a plurality of wires at the same time is used. Conventionally, however, a rack and pinion type in which a rack is connected to a plurality of wires and a pinion is rotated to tension the wires. For this reason, the tensile force acts on the wire, the position of the rack shifts, the meshing between the rack and the pinion is poor, and the fastening operation cannot be smoothly performed.
An object of the present invention is to provide a load fastening device that can apply tension to a plurality of wires by a single operation and can smoothly perform a fastening operation.
[0004]
[Means for Solving the Problems]
A load fastening device according to the present invention includes a machine frame, a plurality of wire winding pulleys rotatably attached to the machine frame, biased in a wire winding direction by a spring, and provided with a gear. An intermittent gear that is installed at a central position between the plurality of pulleys and has a tooth portion that meshes with the gear of each pulley and a tooth notch portion that allows free rotation of each pulley, and the intermittent gear is connected to each pulley. An operation means for rotating in the wire winding direction; a wire wound around each pulley and pulling a load; and a locking mechanism for the intermittent gear or the operation means;
Before the operation of the operating means, the toothed portion of the intermittent gear is set to a position facing the gears, and the pulleys are rotatable.
When the operation means is operated, the intermittent gear rotates and the teeth and the gears mesh with each other, the pulley rotates and the wire is wound and tensioned,
By operating the lock mechanism, the degree of tension of the wire is maintained,
When the locking mechanism is released, the intermittent gear rotates in the reverse direction to release the meshing between the tooth portion and each gear, and each pulley can be rotated.
[0005]
[Operation and effect of the invention]
In the load fastening device according to the first aspect, the intermittent gear is rotated by operating the operating means, and all the pulleys are driven to wind the wire and become tensioned. Thereby, the load loaded on the loading means can be fastened to the loading means with one touch. Further, when the wire is pulled and the hooking means is hooked on the load, the wire can be pulled out. For this reason, by operating the operating means, the load can be fastened to the loading means with one touch.
[0006]
In the load fastening device according to claim 2, the intermittent gear includes a wheel, a tooth portion that meshes with the gear of each pulley, and a toothless portion that allows free rotation of each pulley and the wheel. It consists of the intermittent gear ring plate connected so that it can move finely, and the fine movement mechanism by the elastic member interposed between the said wheel and the said intermittent gear ring plate, It is characterized by the above-mentioned. In this configuration, the intermittent gear and the gear of each pulley can be smoothly engaged.
[0007]
The load fastening device according to claim 3 is characterized in that the teeth of the intermittent gear and the gear teeth of each pulley are spur teeth. By using the spur teeth, the intermittent gear and the gears of the pulleys are surely engaged with each other, and the durability is excellent and the manufacturing cost is reduced.
[0008]
The load fastening device according to a fourth aspect is characterized in that the operation means is an operation lever and the lock mechanism is provided on the operation lever. The operability can be improved and the lock mechanism can be released with one touch.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show a loading device fastening apparatus A according to the present invention. A machine frame 1 having a flat rectangular box shape, an intermittent gear 2 attached to the center of the machine frame 1, and an intermittent gear 2 are shown. And four take-up pulleys 3 arranged at equal intervals on the same circumference as the center. Each pulley 3 is wound with a wire Y, and a hook F as a hooking means is provided at the tip of each wire Y.
[0010]
The wire Y includes a flexible wire other than a twisted wire of a fine metal wire such as a rope, a string, and a chain, and is used appropriately depending on the application. In addition to the hook F, the hooking means may have other structures such as a ring, a clip, and a loop, and may be an engaging element that engages with a load or an engaged portion provided on the loading means side.
[0011]
In this embodiment, the machine frame 1 has a structure in which a cover plate 12 having a substantially rectangular cross section with a thin plate and a small width on the left and right is fastened to a bottom plate 11 having a large thickness and a large area. A total of four roller covers 14 having a substantially square cross section are fastened to the bottom plate 11 on the left and right sides of the cover plate 12 on the left and right sides in the figure (lower upper part in FIG. 1). A turning roller 15 is rotatably installed between each roller cover 14 and the bottom plate 11.
[0012]
Each wire Y is drawn out in the left-right direction of the machine casing 1 through a turning roller 15. An operation mechanism 5 having an operation lever 50 for rotating the intermittent gear 2 in the winding direction of the wire Y is attached to the bottom plate 11 in the middle portion on the right side of the cover plate 12. As shown in FIG. 12, the operation mechanism 5 can be attached to another member and remotely operated.
[0013]
The intermittent gear 2 includes a gear shaft 21 having upper and lower ends fixed to the cover plate 12 and the bottom plate 11 of the machine frame 1, as shown in FIGS. A wheel 23 is rotatably supported on the gear shaft 21 via a bearing 22. The wheel 23 includes a circular can portion 24 on the center side and an outer flange portion 25. Three recesses 26 are formed at equal intervals on the outer periphery of the circular can portion 24. The intermittent gear ring plate 4 is attached to the flange portion 25 so as to be finely movable.
[0014]
A cannula 27 is fitted on the outer periphery of the gear shaft 21, and a spiral spring 28 having one end locked to the cannula 27 and the other end locked to the inner peripheral wall of the circular can part 24 in the circular can part 24. Is housed. The spiral spring 28 urges the wheel 23 in the return direction of the operation lever 50. The lower surface of the wheel 23 is closed by a wheel cover 20 that is rotatably attached to the gear shaft 21 via a bearing 29. Naturally, instead of the spiral spring 28, a torsion spring, a coil spring, or other springs can be used according to the type of the load and the size of the fastening device A.
[0015]
The intermittent gear ring plate 4 is provided with four tooth portions 41 and four tooth-less portions 42 alternately on the outer periphery at equal intervals, and the inner periphery has an inner diameter loosely fitted in the circular can portion 24 and the recess 26. The three protrusions 43 that are loosely fitted to each other are provided at equal intervals. A loose fitting hole 44 is formed at a position facing the protrusion 43 of the intermittent gear ring plate 4. The intermittent gear ring plate 4 is attached to the wheel 23 through the fine movement mechanism 6 so as to be finely movable.
[0016]
As shown in FIG. 6 (a), the fine movement mechanism 6 is formed of an elastic body such as rubber, and has a substantially cylindrical shape and a bush 62 having three recesses 61 formed at equal intervals. 4 has a structure fitted in a gap between the inner periphery of 4 and the outer periphery of the circular can part 24. The intermittent gear ring plate 4 is fastened to the flange portion 25 so as to be finely movable by a stepped screw 63 inserted loosely through the loose fitting hole 44. The fine movement mechanism 6 allows a slight displacement in the radial direction or the circumferential direction when an external force is applied to the intermittent gear ring plate 4.
[0017]
FIG. 6B shows another embodiment of the bush 62. The bush 65 of this embodiment is composed of an annular plate portion 66 formed of a leaf spring and a row of claws 67 provided on the inner periphery thereof in a tapered cylindrical shape. The claw 67 has a structure in which three positions corresponding to the three inner peripheral projections 43 are missing and is fitted into a gap between the inner periphery of the intermittent gear ring plate 4 and the outer periphery of the circular can portion 24. Yes. In this configuration, the bush 65 allows a slight displacement in the radial direction or the circumferential direction between the inner periphery of the intermittent gear ring plate 4 and the outer periphery of the circular can portion 24 by the elasticity of the leaf springs of the claw 67 row. Link.
[0018]
The four winding pulleys 3 have a structure similar to that of the intermittent gear 2 as shown in FIG. A pulley shaft 31 having upper and lower ends fixed to the cover plate 12 and the bottom plate 11 of the machine frame 1 is arranged on four sides of the intermittent gear 2 on the same circumference around the gear shaft 21. A wheel 33 is rotatably supported on the pulley shaft 31 via a bearing 32. The wheel 33 includes a circular can portion 34 on the center side and a flange portion 35 on the outer periphery. Three recesses 36 are formed at equal intervals on the outer periphery of the circular can 34.
[0019]
A gear ring plate 45 around which teeth that mesh with the tooth portion 41 are provided is fixed to the flange portion 35. The gear ring plate 45 has teeth 46 meshing with the teeth 41 on the outer periphery, and the inner periphery has an inner diameter that fits loosely into the circular can portion 34 and three protrusions 47 that fit into the recess 36. It is provided at equal intervals. A fixing screw hole 48 is formed at a position facing the protrusion 47 of the gear ring plate 45.
[0020]
A cannula 37 is fitted on the outer periphery of the pulley shaft 31, and a spiral spring 38 having one end locked to the cannula 37 and the other end locked to the inner peripheral wall of the circular can part 34 in the circular can part 34. Is housed. The spiral spring 38 urges the wheel 33 in the winding direction of the wire Y. The lower surface of the wheel 33 is closed by a wheel cover 30 that is rotatably attached to the pulley shaft 31 via a bearing 39.
[0021]
The operation mechanism 5 includes a bracket 51 having a substantially square cross section having vertical plate portions 5A and 5A fixed in parallel to the bottom plate 11 of the machine frame 1 located on the right side of the cover plate 12, and one end of the vertical plate portion 5A. And a link member 52 having a substantially cross-sectional shape having strips 5B and 5B rotatably connected to 5A.
[0022]
The other ends (rotation side ends) of the band plates 5B and 5B are rotatably connected to the distal end sides (the left end side in the drawing) of the lever plates 53 and 53. The lever plates 53, 53 are connected to each other by a grip 54 at the rear end (right end in the drawing) to form an operation lever 50, and the front end is connected by a rear pin 56 of a slider 55 described later.
[0023]
Between the brackets 51 and 51, a rail 57 having a cross-section is fixed, and guide long holes 58 of the slider 55 are arranged in the front and rear direction on both vertical plate portions. The slider 55 has a substantially square cross section disposed on the outer side of the rail 57, and includes a front pin 59 and a rear pin 56 through which the front and rear guide elongated holes 58 and 58 are inserted before and after the vertical plate portion. One end of the tip of the slider 55 and the intermittent gear 2 is rotatably supported by the link pin 16 on the tip of the slider 55, and the other end is rotatably supported by the link pin 17 on the upper surface of the intermittent gear ring plate 4. It is connected by the link member 10 shown in FIG.
[0024]
The operation of the operation mechanism 5 will be described with reference to FIG. When the grip 54 is grasped and the operation lever 50 is raised, the slider 55 moves rightward and pulls the link member 10. As a result, the intermittent gear 2 rotates, the four tooth portions 41 and the four gear ring plates 45 mesh, and the four pulleys 3 wind up the four wires Y simultaneously.
[0025]
During the meshing, if the teeth 46 of the gear ring plate 45 interfere with the teeth 41 of the intermittent gear 2 and the tooth tip, the intermittent gear ring plate 4 is finely moved in the radial direction or circumferential direction by the action of the fine movement mechanism 6. Engage smoothly. The fine movement mechanism 6 may be provided between the wheel 33 of the take-up pulley 3 and the gear ring plate 45, and this has a great effect of facilitating meshing, but has the disadvantage of increasing the number of parts and increasing the cost. is there.
[0026]
As shown in FIG. 8C, at the position where the lever plates 53, 53 are rotated 120 degrees, the right end of the link plate is lower than the left end and constitutes the lock mechanism 5R. By the action of the lock mechanism 5R, the intermittent gear 2 is kept at the fastening position, the four pulleys 3 are fixed, and the tension state of the wire Y is maintained. The fastening is released by grasping the grip 54 and rotating the operation lever 50 clockwise.
[0027]
FIG. 10 shows an intermittent gear 7 according to another embodiment. The intermittent gear 7 includes a wheel 23 having a flange portion 25 provided around the outer periphery of the circular can portion 24 and four gear pieces 71 attached to the surface of the flange portion 25 at equal intervals. One end of the gear piece 71 is attached to the flange portion 25 with a stepped pin 72 so as to be rotatable, and the inner side is attached outward by a leaf spring 74 that is backed by a recess 73 provided on the outer periphery of the circular can portion 24. It is energized. In this configuration, there are an advantage that the meshing with the gear can be smoothly performed and a disadvantage that the number of parts is increased.
[0028]
FIG. 11 shows an intermittent gear 7A according to another embodiment. The intermittent gear 7 </ b> A includes a wheel 23 having a flange portion 25 provided around the outer periphery of the circular can portion 24, and four gear pieces 76 attached to the surface of the flange portion 25 at equal intervals. Both ends of the gear piece 76 are attached to the flange portion 25 so as to be displaceable by stepped pins 77, 77, and outward with an elastic body 78 made of rubber or a leaf spring interposed between the outer periphery of the circular can portion 24. It is energized. In this configuration, there are an advantage that the meshing with the gear can be smoothly performed and a disadvantage that the number of parts is increased.
[0029]
FIG. 12 shows an embodiment in which the operation mechanism 5 is attached to another member separated from the machine casing 1. The slider 55 and the link member 10 are connected by a wire 18. As in this embodiment, the operation mechanism 5 is attached to another member, thereby enabling remote operation.
[0030]
FIG. 13 shows a case where the load fastening device A of the present invention is applied to a truck bed. The load is a two-wheeled vehicle 8, and an operation lever 50 is attached to a window 82 opened at a predetermined position on a floor 81 of the loading platform, and wires Y are drawn out from four holes 83.
[0031]
FIG. 14 shows an embodiment in which the load fastening device A of the present invention is applied to a pallet for transporting with a forklift or a crane. The load fastening device A is mounted in the double floor 85, the operation lever 50 is mounted on the window 87 opened in the floor 85, and the wire Y is drawn out from the four holes 88.
[0032]
In the above-described embodiment, the embodiment has four wires Y, but the present invention is naturally applicable to a load fastening device for fastening a plurality of wires Y, such as two or six. The operation mechanism may employ operation means other than the lever.
[Brief description of the drawings]
FIG. 1 is a cross-sectional plan view of a load fastening device.
FIG. 2 is a front cross-sectional view of a load fastening device.
FIG. 3 is a plan view of a load fastening device.
FIG. 4 is a front view of a load fastening device.
FIG. 5 is a front view, a side sectional view, and a bottom view of an intermittent gear.
FIG. 6 is an assembly diagram of an intermittent gear fine movement mechanism.
FIG. 7 is a plan view, a front sectional view, and a bottom view of the take-up pulley.
FIG. 8 is a plan view, a front sectional view, and a plan sectional view of the operating mechanism.
FIG. 9 is an operation diagram of the operation mechanism.
FIG. 10 is a plan view of an intermittent gear according to another embodiment.
FIG. 11 is a plan view of an intermittent gear according to still another embodiment.
FIG. 12 is a plan sectional view of a load fastening device according to another embodiment.
FIG. 13 is a perspective view using a load fastening device in an automobile carrier.
FIG. 14 is a perspective view in which a load fastening device is mounted on a pallet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Machine frame 11 Bottom plate 12 Cover plate 2 Intermittent gear 23 Wheel 3 Winding pulley 4 Intermittent gear ring plate 41 Tooth part 42 Notch part 45 Gear ring plate 5 Operation mechanism (operating means)
5R Lock mechanism 50 Operation lever 6 Fine movement mechanism A Fastening device Y for load

Claims (4)

A machine frame, a plurality of wire take-up pulleys that are rotatably attached to the machine frame, biased in the wire take-up direction by a spring, and provided with a gear, and installed at a central position between the plurality of pulleys And an intermittent gear formed with a tooth portion meshing with the gear of each pulley and a toothed portion allowing the free rotation of each pulley, and for rotating the intermittent gear in the wire winding direction of each pulley. An operation means, a wire wound around each pulley and pulling a load, and the intermittent gear or the lock mechanism of the operation means,
Before the operation of the operating means, the toothed portion of the intermittent gear is set at a position facing the gears, and the pulleys are rotatable.
When the operation means is operated, the intermittent gear rotates and the teeth and the gears mesh with each other, the pulley rotates and the wire is wound and tensioned,
By operating the lock mechanism, the degree of tension of the wire is maintained,
When the locking mechanism is released, the intermittent gear is rotated in the reverse direction to release the meshing between the tooth portion and each gear, and the pulleys can be turned. apparatus. 2. The device for fastening a load according to claim 1, wherein the intermittent gear is formed with a wheel, a tooth portion that meshes with a gear of each pulley, and a toothless portion that allows free rotation of each pulley. A load fastening device comprising: an intermittent gear ring plate coupled to the wheel and the intermittent gear ring plate, and a fine movement mechanism using an elastic member interposed between the wheel and the intermittent gear ring plate. 3. The load fastening apparatus according to claim 1, wherein the teeth of the intermittent gear and the gear teeth of each pulley are spur teeth. 4. The load fastening apparatus according to claim 1, wherein the operation means is an operation lever, and the lock mechanism is provided on the operation lever.

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