JPH0355586Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be used, for example, to automatically rotate a spoiler plate in a movable air spoiler device of an automobile, or to open/close an opening/closing body such as an automobile gas filler lid or trunk lid. The present invention relates to a cable winding device used as a driving means when moving an actuated member by a relatively short stroke, such as when automatically rotating the member.

[Conventional technology]

For example, as shown in FIG. 11, a conventional cable winding device of this kind has a cable winding device such as a wire, etc., on the outer periphery of a winding drum 02 that is pivotally supported on a case 01.
3 is wound around the winding drum 02 in a substantially tangential direction, and its end is fixed to the winding drum 02, and the other end of the cable 03 is supported by a guide device 06 so as to be movable back and forth. The actuated member 04 is guided along the moving direction of the actuated member 04, and its terminal is connected to the actuated member 04, and the actuated member 04 is placed between the guide device 06 and the actuated member 04. A return spring 05 is provided which biases the cable 03 in the direction of tension, and the winding drum 02 is rotated in one direction by an appropriate rotating means (not shown) such as a motor, thereby winding the cable 03 and pulling the cable 03. By moving the actuating member 04 in one direction and rotating the winding drum 02 in the other direction, the return spring 05 causes the cable 03 to be let out from the winding drum 02, causing the actuated member 04 to move in the other direction. There is a winding device for moving cables.

[Problem that the invention attempts to solve]

In the conventional cable winding device as described above, a compression coil spring is generally used as the return spring 05, and in such a case, the more the cable 03 is wound around the winding drum 02, the more , the return spring 05 is gradually compressed, and its repulsive force gradually increases.

Therefore, assuming that the force required to move only the actuated member 04 without the return spring 05 is constant, when the return spring 05 is provided, the force required to move the actuated member 04 is constant. The tensile force of the cable 03 gradually increases as the cable 03 is wound around the winding drum 02.

On the other hand, in the conventional winding device as described above, the shape of the outer periphery of the winding drum 02 is as follows.
The diameter r from the center of rotation O to the outer circumference is always a constant circle, and since a motor with a constant output torque is often used as the rotating means, the winding force of the cable 03 is always constant.

Therefore, there is a poor balance between the tensile force of the cable 03 necessary to move the actuated member 04 and the rotational force of the winding drum 02 by a rotating means such as a motor, and with a low output motor, the return spring 05 As the repulsion force gradually increases, the actuated member 04 may be moved only halfway through the desired stroke, or an expensive high-power There is a problem in that a motor or the like must be used.

The object of the present invention is to provide a cable winding device that solves these problems.

[Means for solving problems]

In the present invention, as the basic principle is shown in FIG. At the same time, the end of the cable is fixed to the winding drum 2, and the other end of the cable 3 is guided along the moving direction of the actuated member 4, which is supported by the guide device 6 so as to be movable back and forth. At the same time, the terminal thereof is connected to the actuated member 4, and between the guide device 6 and the actuated member 4,
By providing a return spring 5 that biases the actuated member 6 in the direction of pulling the cable 3, and rotating the winding drum 2 within a range of one rotation in one direction by an appropriate rotation means (not shown). By winding up the cable 3, moving the actuated member 4 in one direction, and rotating the winding drum 2 in the other direction, the return spring 5 causes the cable 3 to be removed from the winding drum 2. In a cable winding device that moves the actuated member 4 in the other direction by unwinding the cable, the shape of the portion on the outer periphery of the winding drum 2 where the cable is wound is determined based on the shape of the cable winding device. It is characterized by being formed in a cam shape in which the effective diameters r ₁ , r ₂ , r ₃ , . . . rx from the rotation center O gradually decrease as the rotation center O increases.

In the example shown in FIG. 1, the outer shape of the winding drum 2 is spiral-shaped with a stepped portion 2a formed between a maximum effective diameter _r1 portion and a minimum effective diameter rx portion.

[Effect]

According to the cable winding device of the present invention, when rotating the winding drum 2 in the direction of winding the cable 3, as the repulsive force of the return spring 5 gradually increases, the effective diameter of the winding drum 2 increases. Since r ₁ , r ₂ , r ₃ , . . . rx gradually decrease, the force balance is good even if a low-output motor with constant torque is used as the rotating means. That is, at the beginning of winding the cable 3, the cable 3 is wound with a weak force but at high speed, and at the end of the winding of the cable 3, when the repulsive force of the return spring 5 is large, the cable 3 is wound with a slow speed but with a strong force. You can take it.

As the cable 3 is wound up by the rotation of the winding drum 2, the actuated member 4 is moved in one direction against the biasing force of the return spring 5, and performs an appropriate work.

When the winding drum 2 is actively rotated in the opposite direction to the case described above, or when the restraining force in the rotational direction of the winding drum 2 is released, the restoring force of the return spring 5 causes the actuated member 4 to move in the case described above. At the same time, the cable 3 is pulled in the opposite direction to the above-mentioned case, and the cable 3 is pulled in the opposite direction to the winding drum 2, so that the cable 3 is moved at a low speed at first and then gradually increases in speed. It is gradually rolled out and returns to its original state.

〔Example〕

Next, an embodiment in which the present invention is applied to a drive device for a movable air spoiler device for an automobile will be described with reference to FIGS. 2 to 10.

Reference numeral 11 denotes a vehicle body, and reference numeral 12 denotes a trunk lid which is provided above a trunk room (not shown) at the rear of the vehicle body 11 so as to be openable and closable, and which forms a part of the vehicle body 11.

The vehicle air spoiler device 13 of the present invention includes a spoiler plate 14 in the shape of a horizontally long flat plate disposed above the trunk lid 12, and a spoiler plate 14 attached to the center of the upper surface of the trunk lid 12, as shown in FIG. A central rotation mechanism 15 that rotates between an almost horizontal non-use position and a use position tilted rearward and upward by a predetermined elevation angle as shown in FIG. A side guide mechanism 16 is attached to the trunk lid 12 and guides the rotation of the spoiler plate 14, and a side guide mechanism 16 is attached to the central rotation mechanism 15 to provide driving force to the central rotation mechanism 15. Drive device 17
It consists of four main parts.

The central rotation mechanism 15 includes a substantially horizontal base member 18 facing in the front-rear direction. Base member 18
On the trunk lid 12, which slopes slightly downward toward the rear, there are two front and rear lids with different lengths in the vertical direction.
By fixing the pair of legs 19 and 20 with setscrews 21, they are supported substantially horizontally.

A pair of upward protrusions 22 on the left and right sides are connected to the front side edges of the base member 18, and each protrusion 22
A long hole 23 is formed in each of the holes 23, the long axis 1 of which is inclined forward and upward with respect to the horizontal plane, and which is curved slightly upward.

As shown in FIG. 7, each protruding piece 22 has a pair of left and right support plates 24, 25 that face approximately in the vertical direction, and their lower ends sandwich the protruding piece 22 from the left and right sides. They are each supported by being fastened to each other with a bolt 26 and a nut 27 that pass through the long hole 23 of the projecting piece 22. In addition,
The nut 27 may be omitted and the bolt 26 may be screwed into a screw hole (not shown) drilled in one of the support plates 24.

At the upper ends of both support plates 24 and 25, both ends of a horizontal pivot 31 facing in the left-right direction supports the front end of a mounting plate 30 fixed to the lower surface of the spoiler plate 14 with bolts 28 and nuts 29. is supported through it.

The spoiler plate 14 can rotate about this pivot 31 between the above-mentioned use position and non-use position.

Projection piece 22 provided with the above-mentioned long hole 23, support plate 2
4, 25, bolts 26, etc., form a pivot support device 32 that supports the pivot 31 in a position-adjustable manner.

That is, loosen the bolt 26 and
At the same time, both support plates 24 and 25 are moved along the elongated hole 23, and both support plates 2 are moved as necessary.
4 and 25 around the central axis of the bolt 26, and then tightening the bolt 26 again, the vertical and longitudinal positions of the pivot 31 can be freely adjusted.

A pair of upwardly facing protrusions 33 and 34 are connected to the front and rear ends of the base member 18, and both protrusions 33 and 34 are provided with a pair of left and right horizontal guide pins that face in the front and back direction. Each end of 35 is fixed.

A sliding body 37 having a pair of left and right through holes 36 through which the guide pins 35 pass is mounted to be slidable in the front-rear direction.

Downward hanging pieces 38 are connected to the lower portions of both sides at the rear of the sliding body 37, and a pair of left and right inclined links are provided on the outer surface of each hanging piece 38 at a portion lower than the lower surface of the base member 18. The lower end portions of 39 are each pivotally connected with an axis 40 parallel to the pivot 31.

The portions of the left and right inclined links 39 slightly above the center are connected to each other by a horizontal connecting rod 41, and the planar shape as a whole is approximately H-shaped.

The upper end of each inclined link 39 is pivotally attached to each side of the rear end of the mounting plate 30 with an axis 42 parallel to the pivot 31 .

Thus, as shown in FIGS. 3 and 5, the sliding body 37 reaches the rear limit position where it abuts against the cushioning stopper 43 made of rubber or the like provided at the center of the front surface of the protrusion 34 at the rear of the base member 18. , the inclined link 39 is in the most collapsed state facing forward and upward, and supports the spoiler plate 14 in a substantially horizontal non-use position via the mounting plate 30.

When the sliding body 37 moves forward along the guide pin 35, the inclined link 39 gradually rises, lifts up the rear part of the spoiler plate 14, and gradually rotates the spoiler plate 14 upward about the pivot shaft 31.

As shown in FIG. 4, each hanging piece 3 of the sliding body 37
The sliding body 3 is moved to the front limit position where the front surface of the base member 8 comes into contact with a shock-absorbing stopper 45 made of rubber or the like that is tightly fitted to a hanging piece 44 formed on the lower front surface of the base member 18.
7 moves forward, the inclined link 39 assumes a substantially vertical or upright state with its lower end located slightly forward of its upper end, supporting the spoiler plate 14 in a position of use where the angle of elevation facing rearward is maximum.

When the sliding body 37 is moved backward from the front limit position to the rear limit position, the operation is reversed to the above case.
The inclined link 39 is gradually lowered, and the spoiler plate 1
4, the angle of elevation toward the rear gradually decreases, and finally returns to the non-use position shown in FIG.

Of the above-described configurations, the base member 18, guide pin 35, stoppers 43, 45, etc.
7, a guide device 46 that reciprocates freely in the front-back direction, an inclined link 39, a mounting plate 30, and a pivot shaft 3.
1, the pivot support device 32, etc., form the central rotation mechanism 15.

As shown in FIGS. 2 to 5 and 8, the driving position 17 is formed by a compression coil spring 48 provided within the central rotation mechanism 15 and a case 49 provided at an appropriate location on the vehicle body 11 away from the trunk lid 12. A winding drum 50 is rotatably supported on this case 49.
, a motor 51 fixed to the case 49 and capable of rotating in forward and reverse directions;
a reduction gear device 52 that reduces the rotational force of the rotational force and transmits it to the winding drum 50; and a sliding body 37 of the central rotation mechanism 15.
The main component includes a cable 53 such as a wire that connects the winding drum 50 and the winding drum 50 to each other.

The compression coil springs 48 are wound around each guide pin 35 and compressed between the front protrusion 33 of the base member 18 and the front end surface of the sliding body 37, so as to keep the sliding body 37 at all times. It serves as a biasing means for biasing backward.

The case 49 includes a board 54 fixed to the vehicle body 11.
and a drum cover 55 that covers the winding drum 50. A motor 5 is mounted on the bottom surface of the board 54.
1 and a speed reducer 52 are mounted thereon, and a winding drum 50 is mounted on the upper surface of the substrate 54.

The speed reducer 52 includes, for example, a worm (not shown) linked to the rotating shaft of the motor 51, and a worm wheel (not shown) meshed with the worm and linked to the drum shaft 50a of the winding drum 50.
Any known device may be used.

The cable 53 has one end fixed to the center of the sliding body 37, extends forward from there, passes through the center of the protrusion 33 on the front of the base member 18, and is connected to a flexible guide tube. 56, enters the lower part of the trunk lid 12, and is further guided to the case 49 by the guide tube 56,
After exiting the guide tube 56, the winding drum 50
After being wound around the outer periphery of the winding drum 50, the other end is fixed to the outer periphery of the winding drum 50.

The guide tube 56 has one end connected to the base member 18.
The other end is fixed to the front surface of the protruding piece 33 on the front side of the case 49, and the other end is attached to the upper surface of the base plate 54 of the case 49 with an appropriate stopper 5.
It is fixed with 7.

As shown in FIG. 8, the winding drum 50 has an outer circumference shaped like a perfect circle centered on an axis eccentric from the drum shaft 50a, which is the center of rotation. One half 50b of a certain outer peripheral portion has a cam shape in which the effective diameters r ₁ , r ₂ , r ₃ , . . . rx from the center of rotation gradually decrease as the cable 53 is wound up.

With such a configuration, the winding drum 50 is rotated clockwise in FIG.
When moving the compression coil spring 4 forward against the biasing force of the compression coil spring 48, which is a return spring, even if the torque of the motor 51 is always constant, the compression coil spring 4
8 is gradually compressed and its repulsive force gradually increases, the cable 53 can be wound and pulled from the winding drum 50 side with a gradually larger force.

Thus, by activating the drive device 17, that is, the motor 51, and rotating the winding drum 50 in the clockwise or counterclockwise direction in FIG. , pulling the cable 53 to move the sliding body 37 forward against the biasing force of the compression coil spring 48, or moving the sliding body 37 backward by the biasing force of the compression coil spring 48. I can do it.

Although not shown in the drawings, limit switches for detecting when the sliding body 37 reaches the rear limit position and the front limit position are provided at appropriate locations on the guide device 46, and the operation of the motor 51 is controlled accordingly. Good.

Among the above configurations, the case 49, the winding drum 5
0, the motor 51, the speed reducer 52, etc.
A winding device 47 for 3 is formed.

As shown in FIGS. 3 to 6, the inclined link 3
9 and the hanging piece 38 of the sliding body 37, and over the entire length of the movement trajectory of the sliding body 37, the upper surface, both side surfaces, and front and rear surfaces of the sliding body 37 and the guide device 46 are A box-shaped inner cover 58 with a downward opening is provided to cover it.

This inner cover 58 has a forward-facing mounting piece 58a connected to the front and rear lower portions thereof, and a rearward-facing mounting piece 58a connected to the front foot piece 19 and a rearward-facing mounting piece 58a connected to the lower rear end thereof.
8b on the rear ends of the legs 20 that protrude rearward from the base member 18, respectively, with appropriate setscrews 59.
It is supported by fixing it with.

Reference numeral 60 denotes an outer cover provided further outside of the inner cover 58, and on its upper surface are a pair of left and right support plates long in the front-rear direction that pass through the left and right support plates 24 and 25 so as to be slightly tiltable with the left and right support plates 24 and 25 overlapped with each other. A long hole 61 and a pair of left and right long holes 62 which are long in the front-rear direction and through which the left and right inclined links 39 can tilt are formed.

The outer cover 60 covers the upper surface, both side surfaces, and front and rear surfaces of the entire central rotation mechanism 15 except for the upper portions of the support plates 24 and 25 and the tilted link 39 that protrude upward through the elongated holes 61 and 62. It's on.

The outer cover 60 is attached to the trunk lid 12 by fixing an appropriate number of attachment pieces 60a bent inward from the lower edges on both sides onto the trunk lid 12 with set screws 63. There is.

This double cover structure inside and outside makes the central rotation mechanism 15 waterproof and dustproof.

That is, the outer cover 60 can almost prevent rainwater, dust, etc. from entering the inside thereof, and in the unlikely event that the long holes 6 of the outer cover 60
Rainwater, dust, etc. pass through the outer cover 60 through 1 and 62.
Even if they get inside the inclined link 39
, and fall onto the top surface of the trunk lid 12 from its lower end, or after falling onto the inner cover 58 , from the top surface down the side surface and onto the top surface of the trunk lid 12 , in any case, they fall onto the top surface of the trunk lid 12 . There is almost no possibility that it will invade the sliding portion between the guide device 37 and the guide device 46.

Therefore, smooth operation can be maintained and durability can be improved.

In the outer cover 60, rainwater that has accumulated on the upper surface of the trunk lid 12 is drained from the gap between the upper surface of the trunk lid 12 and the lower edge of the outer cover 60, or from a drainage hole (not shown) formed as necessary. ) etc., and is discharged to the outside of the outer cover 60.

In addition, a sealing member (not shown) such as a rubber plate with a slit cut therein is appropriately installed in each of the long holes 61 and 62, and the support plates 24 and 25 in each of the long holes 61 and 62 are
It is also preferable to close the gap other than the inclined link 39.

As shown in FIGS. 2, 9, and 10, the left and right side guide mechanisms 16 (as they have the same structure, only one will be described below) are connected to the central rotation mechanism 15. It has the same component parts and different component parts.

First, to explain the same components as the central rotation mechanism 15, the side guide mechanism 16 includes upwardly facing projecting pieces 64, 65 at the front and rear ends, and a pair of front and rear legs 66, 67. It also includes a base member 68 secured onto the trunk lid 12.

A projecting piece 70 having an inclined slightly arcuate elongated hole 69 is connected to both intermediate sides of the base member 68, and this projecting piece 70 is provided with support plates 71 and 72 that sandwich it from the left and right, and support plates 71 and 72 that sandwich it from the left and right, and A pivot support device 75 consisting of a bolt 73 and a nut 74 passing through the elongated hole 69 is attached.

Support plates 71 and 7 in this pivot support device 75
A pivot 77 that pivots the front end of the mounting plate 76 fixed to the lower surface of the spoiler plate 14 by the upper end of 2.
It is supported so that its position can be adjusted.

If the pivot shaft 31 in the central rotation mechanism 15 and the pivot shafts 77 in the left and right side guide mechanisms 16 are not completely aligned, the rotation of the spoiler plate 14 may be hindered or the rotation may be interrupted. Since this is impossible, each pivot support device 32, 75 is a position adjustment means for positioning each pivot 31, 77 so perfectly in line.

Next, to explain the difference from the configuration of the central rotation mechanism 15, in the center of each of the front and rear projecting pieces 64, 65 of the base member 68, each end of one horizontal guide pin 78 facing the front and rear direction is provided. The parts are fixed.

A sliding body 80 having a through hole 79 through which the guide pin 78 passes is mounted on the guide pin 78 so as to be slidable in the front-rear direction.

At the center of the lower surface of the sliding body 80, there is a long rectangular hole 82 formed in the center of the base member 68 and long in the front-rear direction.
A hanging piece 81 that extends downwardly through the base member 68 is connected to the left and right side surfaces of the hanging piece 81, and a cylindrical part 83 that passes below the base member 68 and extends to both sides is connected to the left and right sides of the hanging piece 81. ing.

A lower end of an inclined link 84 is pivotally attached to the tip of each cylindrical portion 83 with a shaft 85 parallel to the pivot 77 . Both inclined links 84 are integrally connected to each other near their upper ends by connecting rods 86 facing in the lateral direction, and have a generally H-shaped planar shape as a whole.

This inclined link 84 is located on the opposite side of the central rotation mechanism 15 from the inclined direction of the inclined link 39.
That is, it is inclined rearward and upward, and its upper end is pivotally attached to the rear end of the mounting plate 76 with a shaft 87 parallel to the pivot 77 .

This shaft 87 is the shaft 4 in the central rotation mechanism 15.
There is no particular need to arrange it in a straight line with 2, and
The length of the inclined link 84 does not need to match the length of the inclined link 39 in the central rotation mechanism 15. In the embodiment, the inclined link 84 is connected to the inclined link 3.
It is slightly longer than 9.

A compression coil spring 88 is compressed between the rear surface of the sliding body 80 and the rear projection piece 65 of the base member 68 so as to be wound around the guide pin 78. As a result, the sliding body 80 is always urged forward.

As shown by the solid line in FIG. 9, the sliding body 80 is at the front end position where the hanging piece 81 abuts against a stopper 90 made of rubber or the like fitted to a hanging piece 89 hanging from the front edge of the elongated hole 82. And, as shown by the imaginary line in Figure 9,
The hanging piece 81 is movable between a rear limit position where it abuts a stopper 92 made of rubber or the like fitted to a hanging piece 91 hanging from the rear edge of the elongated hole 82 .

When the spoiler plate 14 is maintained at the unused position by the central rotation mechanism 15, the sliding body 80 is held at the front end position by the biasing force of the compression coil spring 88, and the inclined link 84 is moved as shown in FIG. As shown by the solid line in , the spoiler plate 14 is supported at both rear sides thereof so as not to vibrate vertically unintentionally with the upper part tilted most backward.

The spoiler plate 14 is rotated upward to the use position by the central rotation mechanism 15, that is, by pulling the cable 53 and erecting the inclined link 39 against the biasing force of the compression coil spring 48. In this case, as the spoiler plate 14 rotates upward, the upper end of the inclined link 84 is pulled up, and the inclined link 84 is made to stand up as shown by the imaginary line in FIG. It is moved to the rear limit position against the biasing force of the compression coil spring 88.

When the spoiler plate 14 is moved from the use position to the non-use position by the central rotation mechanism 15, the biasing force of the compression coil spring 88 assists the spoiler plate 14 in the direction of lying down.

In this way, the left and right side guide mechanisms 16
When the spoiler plate 14 is rotated around the pivots 31 and 77 by the central rotation mechanism 15,
Guide the both sides of the spoiler plate 14, and
Make the rotation of 4 smooth.

Of the above-described configurations, the base member 68, guide pin 78, stoppers 90, 92, etc.
A guide device 93 is formed that guides 0 in a reciprocating manner in the front and back direction.

94 is an inner cover similar to the inner cover 58 of the central rotation mechanism 15, and 95 is an outer cover similar to the outer cover 60.

Next, the overall operation of the apparatus of this embodiment will be briefly explained.

When the spoiler plate 14 is in the horizontal non-use position, the sliding body 37 is positioned at the rear limit position by the biasing force of the compression coil spring 48, and the sliding body 8
0 is positioned at the front limit position by the biasing force of the compression coil spring 88, and the inclined link 39 is moved forward.
Further, the inclined links 84 support the spoiler plate 14 in a state in which they are respectively laid down rearward.

From this state, when the motor 51 of the drive device 17 is operated to rotate the winding drum 50 clockwise in FIG. Force and compression coil springs 88 in the side guide mechanism 16
(This urging force is also applied to the sliding body 3 via the inclined link 84, spoiler plate 14, inclined link 39, etc.)
7), the inclined link 39 stands up, and the rear end of the spoiler plate 14 is rotated upward about the pivots 31, 77.

Along with this, the upper end of the inclined link 84 in each side guide mechanism 16 is pulled up, so that the inclined link 84 is erected, and its lower end and the sliding body 80 resist the biasing force of the compression coil spring 88. and be moved backwards.

When the sliding body 37 reaches the front limit position, the inclined link 39 is in an upright position, and the spoiler plate 14 is in the use position. At this time, the inclined link 84 stops in an inclined state in which the lower end is located slightly forward of the upper end,
Furthermore, the sliding body 80 stops at the rear limit position.

In this way, when the car runs at high speed while the spoiler plate 14 is maintained in the use position, the spoiler plate 14 tilts upward at the rear.
The wind pressure acting on the top surface generates a force that pushes the rear of the vehicle downward, and this force pushes the tires against the ground against the wind-induced lift when the vehicle is running at high speeds, improving the tire's ground contact. do.

When the spoiler plate 14 is in the use position, the motor 51 is operated to rotate the winding drum 50 in the counterclockwise direction in FIG.
3 is unwound from the winding drum 50, the sliding body 37 is moved rearward by the biasing force of the compression coil spring 48, and the sliding body 80 is moved forward by the compression coil spring 88, and the inclined link 39 The tilting links 84 are gradually lowered in opposite directions, and the spoiler plate 14 is lowered so that the angle of elevation becomes gradually smaller, and returned to its original unused position.

Note that the spoiler plate 14 can also be stopped at a position halfway between the use position and the non-use position by stopping the operation of the motor 51.

In the present invention, among the above embodiments, the drive device 17
This relates to the configuration of the winding device 47 in
With this configuration, it is possible to achieve the effects described later as an effect of the invention.

Note that, as in the above embodiment, the winding drum 5
By making the shape of the outer periphery of the winding drum 50 circular and by eccentrically supporting the winding drum 50 on the case 49, the effective diameter of one half of the outer periphery of the winding drum 50 increases as the cable 53 is wound. If the winding drum is gradually reduced, manufacturing is easier than in the case of the spiral winding drum 2 shown in FIG.

[Effect of idea]

As is clear from the above, according to the cable winding device of the present invention, at least a portion of the outer circumference of the winding drum is formed such that the effective diameter gradually decreases as the cable is wound. As the cable is wound around the winding drum, the winding force gradually increases, and it is possible to overcome the gradually increasing repulsive force caused by the return spring, etc., to reliably move the actuated member, and to reverse the winding drum. When the cable is unwound from the take-up drum, the unwinding speed of the cable is low at first and gradually increases, so there is an advantage that there is no risk of slack in the cable.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a cable winding device for explaining the principle of the present invention, and FIG. 2 is a schematic plan view of a vehicle body in which the present invention is applied to a drive device for an air spoiler device. Fig. 3 is a vertical cross-sectional side view of the central rotation mechanism of the air spoiler device when the spoiler plate is in the non-use position, and Fig. 4 is a schematic perspective view showing the spoiler plate in its installed state. FIG. 5 is a partially cutaway plan view taken along line A-A in FIG. 3, and FIG. 6 is a side view similar to FIG. -B
The longitudinal rear view along the line, FIG. 7, is C-C in FIG. 3.
FIG. 8 is a partially cutaway plan view of the drive device, FIG. 9 is a longitudinal side view of the side guide mechanism, and FIG. 10 is a view from above of FIG. 9. FIG. 11, a partially cutaway plan view, is a schematic plan view showing an example of a conventional cable winding device. 11...Vehicle body, 12...Trunk lid, 13
... Air spoiler device for vehicle, 14 ... Spoiler plate, 15 ... Central rotation mechanism, 16 ... Side guide mechanism, 17 ... Drive device, 18 ... Base member,
31, 77... Pivot, 35... Guide pin, 37
... Sliding body (actuated member), 39, 84 ... Inclined link, 46, 93 ... Guide device, 47 ... Winding device, 48 ... Compression coil spring (return spring),
49... Case, 50... Winding drum, 51...
...Motor, 52...Reduction device, 53...Cable.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) One end of the cable is wound around the outer periphery of the winding drum that is pivotally supported on the case from a substantially tangential direction of the winding drum, and the end is fixed to the winding drum. The other end of the cable is guided along the moving direction of the actuated member supported by the guide device so as to be reciprocally movable, and the end thereof is connected to the actuated member, and the guide device and the actuated member are connected to each other. A return spring is provided between the actuating member and the actuated member to urge the actuated member in the direction of pulling the cable, and the winding drum is rotated within a range of one rotation in one direction by an appropriate rotation means, By winding the cable, moving the actuated member in one direction, and rotating the take-up drum in the other direction, the return spring allows the cable to be paid out from the take-up drum, and the actuated member is moved in one direction. In a cable winding device that moves the cable in the other direction, the shape of the cable winding portion of the winding drum is a cam shape in which the effective diameter from the center of rotation gradually decreases as the cable is wound. A cable winding device characterized in that it is formed as follows. (2) The cable winding device according to claim 1, wherein the cam has a spiral shape. (3) The cable winding device according to claim 1, wherein the cam has a circular arc shape centered at a point eccentric from the rotation center of the winding drum.