JP5223776B2 - Sunshade drive - Google Patents

Description

  The present invention relates to a drive device for a sunshade.

A sunshade drive device is disclosed in, for example, Patent Document 1.
In this case, as shown in FIG. 8, the window winding sunshade 325 is pulled out from the main body of the side door 311 through the elongated hole on the lower side of the window cutout portion.
Further, the window winding sunshade 325 includes a winding sunshade fabric 329 that can be wound around the winding shaft 331 and has a pull bar 334 at a free edge.
Two support bars 336, 337 are provided as a guide for the pull bar 334 between the retracted position and the extended position.
The two support rods 336 and 337 are slidably guided by the two guide rails 338 and 339 substantially vertically to the lower edge of the window.
In addition, each of the two support rods 336 and 337 is offset to the extended position by the individual spring motors 346 and 347.
The window winding sunshade 325 includes a geared motor device 370. The geared motor device 370 is arranged coaxially with the take-up shaft 331 and drives a gear 372 fixed to rotate together by the output gear 371.
Then, in the retracted state, the winding sunshade dough 329 is wound on the take-up shaft 331, and the spring motors 346 and 347 cause the winding sunshade dough 329 to be taken up by the take-up shaft 331 by the self-locking effect of the geared motor 370. It is designed to prevent it from being pulled out from.
When it is desired to expand the window winding sunshade 325, the winding shaft 331 rotates to unwind the winding sunshade dough 329 by operating the geared motor 370. By means of the sunshade 329 being loosened from the take-up shaft 331, the two spring motors 346, 347 push up and extend the pull bar 334 ahead of the support bars 336, 337.
When storing the window awning awning 325, the take-up shaft 331 is rotated and stored so as to wind up the winding awning dough 329 by reversing the geared motor 370.

JP 2008-302919 A

Incidentally, in the structure disclosed in Patent Document 1, two support bars 336 and 337 and two guide rails 338 for moving up and down a tension bar 334 disposed on a free edge of the sunshade fabric 329, 339 must be secured inside the main body of the side door 311.
For this reason, it may be difficult to employ the structure disclosed in Patent Document 1 as a sunshade drive device for opening and closing a roof window of a vehicle.
For example, in the case of a roof window called a panoramic roof that is long in the front-rear direction of the roof portion of the vehicle, two support rods 336 and 337 and two guide rails 338 and 339 are provided on the roof portion on the rear side (or front side) of the roof window. It is not possible to secure a space for disposing them.

  In view of the above problems, an object of the present invention is to provide a drive device for a sunshade that can be satisfactorily disposed in a limited space and can be smoothly drawn out and wound in a stable state. It is.

In order to solve the above problems, a sunshade drive device according to claim 1 of the present invention includes a shade shaft that is rotatably arranged along one edge of a roof window provided in a roof portion of a vehicle,
The roof window is unshielded when rolled up to the shade shaft and rolled up to the winding end position, and the roof window is shielded when pulled out to the drawer end position. A sheet-like sunshade, and
First and second cable drums that are attached to both end portions of the shade shaft so as to be integrally rotatable, and in which cable guide grooves are respectively formed on the outer peripheral surface;
One end is connected to the first cable drum so that it can be wound and pulled out along the cable guide groove, and the other end is connected to one end of a terminal bar attached to the drawer end of the sunshade. A drive system cable connected to a drive drum that is rotated forward and backward using a motor as a drive source;
One end is connected to the second cable drum so that it can be wound and pulled out along the cable guide groove, and the other end is connected to the other end of the terminal bar.
The first and second cable drums are each formed in a tapered shaft shape,
Both cable guide grooves have a length corresponding to the drawing length of the sunshade, and are formed in a spiral shape that changes in response to a change in the winding diameter of the sunshade that is wound around the shade shaft. It is characterized by.

According to the above configuration, the drive system cable and the driven system cable are mainly configured, so that the cable can be easily arranged in a limited space at the peripheral edge portion of the roof window provided in the roof portion of the vehicle. .
Also, when the sunshade wound in a roll shape is pulled out on the shade shaft and the roof window is shielded from light, the drive drum is rotated in one direction, using the motor as the drive source, and the drive system cable is moved in one direction. Let
Then, the terminal bar having one end connected to the other end of the cable of the drive system is moved toward the drawer end position, and the sunshade is pulled out while rotating the shade shaft in the pull-out direction by the movement of the terminal bar. .
As the shade shaft rotates in the pull-out direction, both the first and second cable drums are rotated in the same direction, thereby driving the drive system along the cable guide grooves of the first and second cable drums. The cable and the driven cable are wound up.
Each cable guide groove of both the first and second cable drums has a length corresponding to the drawing length of the sunshade, and changes corresponding to the change in the winding diameter of the sunshade wound around the shade shaft. It is formed in a spiral shape.
Therefore, the terminal bar having the other end connected to the other end of the driven cable is moved toward the drawer end position.
That is, the terminal bar is smoothly moved to the drawer end position while pulling out the sunshade while maintaining a state parallel to the shade axis, and thereby the roof window is in a light shielding state.
When the sunshade is wound around the shade shaft in a roll shape so that the roof window is not shielded from light, the drive drum is rotated in the opposite direction by the motor, and the drive system cable is moved in the other direction.
Then, while rotating the 1st drum connected with the one end part of the cable of a drive system to the reverse direction, a shade axis | shaft and a 2nd drum are rotated in the same direction.
As a result, the sunshade is wound around the shade shaft, and the roof window is in a light-shielding state.
As described above, the sunshade can be pulled out or rolled up in a stable state, or the roof window can be put in a light shielding state or a non-light shielding state.

A sunshade drive device according to claim 2 is the sunshade drive device according to claim 1,
The drive train cable is disposed along one side of the roof window,
The driven cable is arranged along the other side of the roof window.

  According to the above configuration, the drive system cables are arranged along one side portion of the roof window, and the driven system cables are arranged along the other side portion of the roof window, so that the length of each cable is required. Can be minimized.

A sunshade drive device according to claim 3 is the sunshade drive device according to claim 1 or 2,
The first and second cable drums are arranged in the same direction on the axis of the shade shaft.

  According to the said structure, both 1st and 2nd cable drums can be made into a common part, and reduction of manufacturing cost can be aimed at.

It is a top view which shows the non-light-shielding state by which the sunshade was rolled up by the shade shaft by the sunshade drive device which concerns on Example 1 of this invention by roll shape. It is sectional drawing based on the II-II line of FIG. It is explanatory drawing which similarly shows the relationship between a shade shaft, a sunshade, and a 2nd cable drum. It is explanatory drawing which similarly shows the relationship of the cable of a drive system, a drive drum, and a tension mechanism. It is a top view which shows the light-shielding state where the sunshade was similarly pulled out from the shade axis | shaft to the extraction end position by the drive device of a sunshade. It is a top view which shows the drive device of the sunshade which concerns on Example 2 of this invention. It is explanatory drawing which shows the embodiment by which the 1st and 2nd cable drum was made | formed in the attitude | position of the same direction on the axis line of the both ends of a shade axis | shaft. It is explanatory drawing which shows the drive device of the conventional sunshade.

  The best mode for carrying out the present invention will be described in accordance with an embodiment.

A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, a roof window opening surrounded by the front, rear, left and right roof rail panels 11 is formed in the roof (ceiling) of the vehicle body, and the roof window opening is used as a window plate. A roof window 13 is configured by mounting the resin roof panel 15 in a fixed state.

As shown in FIG. 1, a shade shaft 30 extending in the vehicle width direction is rotatably disposed by a bearing member 16 at one end edge (rear end edge in the figure) of the roof window 13.
In the first embodiment, as shown in FIG. 2, the resin roof panel 15 has an annular shape along a panel portion 15a formed of a transparent resin material forming a main portion thereof, and a lower surface peripheral portion of the panel portion 15a. It is integrally provided with a peripheral frame portion 15b formed by a non-transparent resin material (two-color molding). The bearing member 16 is formed integrally with a part of the peripheral frame portion 15b.

As shown in FIG. 1, a sunshade 40 for making the roof window 13 in a light-shielding state or a non-light-shielding state is wound around the outer peripheral surface of the shade shaft 30 so as to be drawn out.
That is, the sunshade 40 is formed of a woven cloth, a resin sheet, or the like having a size capable of blocking light incident from the roof window 13, and has a rigid end bar 41 in the vehicle width direction at a drawer end (free end). Is installed.
As shown in FIGS. 1 and 2, both end portions of the terminal bar 41 are inserted into the guide rails 20 formed integrally with the left and right frame portions of the peripheral frame portion 15b so as to be moved and guided in the front-rear direction. It has become.
As shown in FIG. 1, when the sunshade 40 is wound on the shade shaft 30 to the winding end position, the roof window 13 is set in a non-light-shielding state, and as shown in FIG. 5, the sunshade 40 is pulled out to the drawing end position. When this is done, the roof window 13 is in a light-shielded state.

As shown in FIGS. 1 and 3, first and second cable drums 31 and 35 are attached around the shafts at both ends of the shade shaft 30 so as to be rotatable together with the shade shaft 30.
The first and second cable drums 31 and 35 are each formed in a tapered shaft shape, and are symmetrical (the vehicle's direction is such that each small diameter side is located outside the vehicle width direction and the large diameter side is located inside the vehicle width direction. It is mounted symmetrically with respect to the center line.
And the winding diameter of the sunshade 40 which has the length corresponding to the drawing length of the sunshade 40 in the outer peripheral surface of both the 1st, 2nd cable drums 31 and 35, and is wound up by the shade shaft 30 Helical cable guide grooves 32 and 36 that change in response to the change are formed respectively.
That is, as shown in FIG. 3, the maximum diameter dimension D1 of the helical cable guide grooves 32 and 36 is substantially the same as the winding diameter dimension Da when the sunshade 40 is wound on the shade shaft 30 to the winding end position. The minimum diameter D2 of the spiral cable guide grooves 32 and 36 having the same size is set to be approximately the same as the winding diameter Db of the shade shaft 30 when the sunshade 40 is pulled out to the pull-out end position. ing.

As shown in FIG. 1, the drive device 50 that draws and winds the sunshade 40 around the shade shaft 30 is mainly composed of a drive system cable 51 and a driven system cable 81.
As shown in FIGS. 1 and 4, the drive system cable 51 includes two cables 52 and 60, and these cables 52 and 60 are inserted into flexible guide tubes 55 and 64 to guide movement. Is done.
One end of one cable 52 of the drive system cable 51 is coupled along the cable guide groove 32 of the first cable drum 31 so as to be capable of being wound and pulled out.
As shown in FIG. 4, the other end of one cable 52 that forms an intermediate part of the cable 51 of the drive system and the one end of the other cable 60 are driven in the housing 72 by using a motor 71 as a drive source. The driving drum 73 is rotatably connected to the driving drum 73 and wound around the outer peripheral surface of the driving drum 73 in opposite directions.
Furthermore, the other end of the other cable 60 of the drive system cable 51 is connected to one end of the terminal bar 41 of the sunshade 40 (the side opposite to the side where the first cable drum 31 is disposed).
The motor 71 and the housing 72 of the drive drum 73 are disposed on the other end edge (front end edge in the figure) of the roof window 13.

  In the first embodiment, in order to apply necessary tensions to the two cables 52 and 60 of the drive system cable 51, for example, as shown in FIG. Tension springs 58 and 66 constituting tension mechanisms 57 and 65, respectively, are disposed between the cable insertion port and one end portions of both guide tubes 55 and 64. The end portions of both guide tubes 55 and 64 are The cable 72 is supported so as to be movable in the cable direction with respect to both cable insertion openings 72a and 72b of the housing 72 fixed to the roof panel (vehicle body) side.

As shown in FIG. 1, the driven cable 81 is inserted into a guide tube 85 having flexibility and is guided to move. One end of the driven cable 81 is connected along the cable guide groove 36 of the second cable drum 35 so that it can be wound and pulled out. The other end of the driven cable 81 is connected to the other end of the terminal bar 41.
A tension mechanism (not shown) having the same structure as that of the tension mechanisms 57 and 65 of the drive system cable 51 is also provided for the driven cable 81 as required.

The sunshade drive device according to the first embodiment is configured as described above.
Therefore, since the sunshade drive device is mainly composed of the drive system cable 51 and the driven system cable 81, the drive system and the driven system cables 51, 81 are connected to the right and left side edges and the front edge of the roof window 13. It can be easily arranged in a limited space of the roof part of the vehicle along the part.

Further, as shown in FIG. 1, when the sunshade 40 that is in a non-light-shielding state (taken up to the winding end position on the shade shaft 30) is pulled out to make the roof window 13 in a light-shielding state, 71 is operated to rotate the drive drum 73 in one direction. As a result, the two cables 52 and 60 of the drive system cable 51 are moved in one direction at the same speed.
Then, one end of the terminal bar 41 is moved toward the drawer end position by the other cable 60 of the drive system cable 51, and the sunshade 40 rotates the shade shaft 30 in the drawer direction by the movement of the terminal bar 41. Pulled out.
Simultaneously with the rotation of the shade shaft 30 in the pull-out direction, the first and second cable drums 31 and 35 are rotated in the same direction.
As a result, one cable 52 of the drive system cable 51 and the driven system cable 81 are wound along the cable guide grooves 32 and 36 of the first and second cable drums 31 and 35, respectively. Go.

The cable guide grooves 32, 36 of both the first and second cable drums 31, 35 have a length corresponding to the lead-out length of the sunshade 40 and the winding of the sunshade 40 that is wound around the shade shaft 30. It is formed in a spiral shape that changes in response to a change in diameter.
Therefore, one cable 52 of the drive system cable 51 and the driven system cable 81 are wound at the same speed along the cable guide grooves 32 and 36 of the first and second cable drums 31 and 35, respectively. At the same time, the other end of the terminal bar 41 is moved toward the drawer end position at the same speed as the one end of the terminal bar 41 by the driven cable 81.
As a result, the terminal bar 41 is smoothly moved to the drawer end position while pulling out the sunshade 40 while keeping the state parallel to the shade shaft 30, and thereby the roof window 13 is in a light shielding state (see FIG. 5).

As shown in FIG. 5, when the sunshade 40 in the light-shielded state is brought into the non-light-shielded state, the drive drum 73 is rotated in the opposite direction by the motor 71 and the two cables 52 and 60 of the drive system cable 51 are rotated. Is moved at the same speed in the opposite direction.
Then, while the cable portion of one cable 52 of the drive system cable 51 wound around the cable guide groove 32 of the first cable drum 31 is pulled out from the cable guide groove 32, the first cable drum 31 is moved through the cable guide groove 32. Rotate in the opposite direction. At the same time, the shade shaft 30 and the second cable drum 35 are rotated in the same direction.
As a result, the sunshade 40 is wound on the shade shaft 30 to the winding end position, and the roof window 13 is in a non-light-shielding state as shown in FIG.

As described above, by rotating the driving drum 73 in the forward and reverse directions by the motor 71, the sunshade 40 can be pulled out smoothly in a stable state, or the roof window 13 can be made to be in a light-shielding state, or can be in a non-light-shielding state. Can be.
Further, it is not necessary to bias the shade shaft 30 in the winding direction or the drawing direction by the spring.
As a result, since the rotational force of the motor 71 is not lost by the biasing force of the spring, a small motor 71 having a small rotational force (capacity) can be used, and the space for arranging the motor 71 can be easily secured. .

Next, a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, as shown in FIG. 6, the drive system cable 151 is disposed along one side and the front edge of the roof window 13, and the driven system cable 81 is disposed on the other side of the roof window 13. It is arranged along the part.

That is, in the second embodiment, the drive system cable 151 includes two cables 152 and 160, and these cables 152 and 160 are inserted through flexible guide tubes 155 and 164 to be guided to move. .
One end portion of one cable 152 of the drive system cable 151 is coupled along the cable guide groove 36 of the second cable drum 35 so as to be able to be wound and pulled out.
The other end of one cable 152 that forms the middle part of the cable 151 of the drive system and the one end of the other cable 160 are driven with the motor 171 as a drive source and disposed in the housing 172 so as to be able to rotate forward and backward. Each is connected to a drum (not shown), and is wound around the outer peripheral surface of the drive drum in opposite directions.
Further, the other end of the other cable 160 of the drive system cable 151 is connected to the other end (the side on which the second cable drum 35 is disposed) of the terminal bar 41 of the sunshade 40.
In the second embodiment, similarly to the first embodiment, tension mechanisms 157 and 165 for applying necessary tensions to the two cables 152 and 160 of the drive system cable 151 are provided. ing.

The driven cable 181 is inserted into a guide tube 185 having flexibility and is guided to move. One end of the driven cable 181 is coupled along the cable guide groove 32 of the first cable drum 31 so as to be capable of being wound and pulled out. The other end of the driven cable 181 is guided by the pulley 190 and folded back in a U-turn shape, and is connected to one end of the terminal bar 41.
In addition, a tension mechanism (not shown) is also provided for the driven cable 181 as necessary in the same manner as in the first embodiment.
Since the other configuration of the second embodiment is configured in the same manner as the first embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted.

Therefore, also in this Example 2, there exists an effect similar to Example 1. FIG.
In particular, in the second embodiment, a drive system cable 151 is disposed along one side (including a part of the front edge) of the roof window 13, and is driven along the other side of the roof window 13. By providing the system cable 81, the length of each cable of the drive system and the driven system can be minimized.

In addition, this invention is not limited to the said Example 1 and 2, In the range which does not deviate from the summary of this invention, it can also be implemented with a various form.
For example, in the first and second embodiments, the small diameter sides of the first and second cable drums 31 and 35 are positioned outside in the vehicle width direction and the large diameter side is the vehicle width around both end shafts of the shade shaft 30. In the example illustrated in FIG. 7, the first and second cable drums 31 and 35 are arranged in the same direction on the axis of the shade shaft 30. It can also be placed in a posture.
In this case, both the first and second cable drums 31 and 35 can be shared, and the manufacturing cost can be reduced.

13 Roof window 15 Resin roof panel (window plate)
DESCRIPTION OF SYMBOLS 30 Shade shaft 31 1st cable drum 32 Cable guide groove 35 2nd cable drum 36 Cable guide groove 40 Sunshade 41 Terminal bar 51 Drive system cable 71 Motor 73 Drive drum 81 Drive system cable

Claims (3)

A shade shaft rotatably arranged along one edge of a roof window provided in a roof portion of the vehicle;
The roof window is unshielded when rolled up to the shade shaft and rolled up to the winding end position, and the roof window is shielded when pulled out to the drawer end position. A sheet-like sunshade, and
First and second cable drums that are attached to both end portions of the shade shaft so as to be integrally rotatable, and in which cable guide grooves are respectively formed on the outer peripheral surface;
One end is connected to the first cable drum so that it can be wound and pulled out along the cable guide groove, and the other end is connected to one end of a terminal bar attached to the drawer end of the sunshade. A drive system cable connected to a drive drum that is rotated forward and backward using a motor as a drive source;
One end is connected to the second cable drum so that it can be wound and pulled out along the cable guide groove, and the other end is connected to the other end of the terminal bar.
The first and second cable drums are each formed in a tapered shaft shape,
Both cable guide grooves have a length corresponding to the drawing length of the sunshade, and are formed in a spiral shape that changes in response to a change in the winding diameter of the sunshade that is wound around the shade shaft. A drive device for a sunshade, The sunshade drive device according to claim 1,
The drive train cable is disposed along one side of the roof window,
The sunshade drive device, wherein the driven cable is disposed along the other side of the roof window. The sunshade drive device according to claim 1 or 2,
The first and second cable drums are arranged in a posture in the same direction on the axis of the shade shaft.

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