JPH0724275Y2 - Sunroof drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a drive device for a sunroof.

(Prior Art) For example, as a sunroof driving device, an output shaft is provided on a transmission gear driven by a motor, and a feed gear for driving a geared cable 7 linked to a panel for opening and closing a roof opening is provided on the output shaft, There is one in which the panel is driven to open and close through the cable by the power of the output shaft. Conventionally, there is a drive device that detects the vicinity and the fully closed position of the panel by the power of the output shaft, decelerates the motor near the fully closed position, and then tries to stop at the fully closed position (actual opening). 63-15221 publication).

This has a drive gear driven by it on an output shaft between the transmission gear and the feed gear, and has a driven gear which is rotated by a constant pitch for each rotation of the drive gear. The gear has two cams. Then, when the panel reaches near the fully closed position, one cam activates the deceleration detection switch, and when it reaches the fully closed position, the other cam activates the stop detection switch, and the deceleration of the panel is caused by those actions. Configured to stop.

The driven gear is arranged such that its axis is parallel to the axis of the output shaft, and the motor stopping cam and the reduction cam are formed on the outer peripheral surface of the driven gear in two axial steps and correspond to those cams. The detection switch is arranged on the radial side of the driven gear.

(Problems to be Solved by the Invention) In the above-mentioned conventional device, since the cam is formed on the outer peripheral surface of the driven gear, the thickness of the driven gear in the axial direction is correspondingly increased, resulting in a drive gear. The axial distance between the gear and the transmission gear is increased, and the thickness of the device in the output axis direction is increased. On the other hand, the drive device is usually provided below the vehicle roof, and the interior material as the indoor ceiling is located below the drive device. Therefore, there is a problem that the thicker the drive device, the narrower the space between the occupant and the ceiling. Also, because the motor stop and deceleration detection switches are arranged on the radial side of the driven gear, the device is enlarged in the radial direction of the output shaft by the amount of that switch, and a large installation space is required accordingly. To be done.

Therefore, an object of the present invention is to reduce the size of a sunroof driving device.

(Means for Solving the Problem) The technical means taken by the present invention to achieve the above-mentioned object is to provide a transmission gear 14 which is laterally driven by the motor 11 and is driven by the motor 11 about an axial center in the vertical direction. The transmission gear 14 is provided with an output shaft 13 coaxially therewith, and above the transmission gear 14 of the output shaft 13, the drive feed gear for the cable 7 for moving the panel 1 for opening and closing the roof opening 3 is arranged. 16 is provided with a detection means 17 for detecting the position of the panel 1 by the power of the output shaft 13 to control the motor 11. The detection means 17 is a transmission gear 14 and a feed gear 16 of the output shaft 13. And a drive gear 18 fixed between the drive gear 18 and a radial direction side of the drive gear 18, the axis of which is parallel to the axis of the output shaft 13 and fixed for each rotation of the drive gear 18. Driven gear 19 rotated by pitch
And a limit switch 21 that detects the position of the panel 1,
And a cam 20 provided on a driven gear 19 for operating the limit switch 21 when the panel 1 reaches the detection position, and a frame 10 for mounting and supporting the motor 11, the output shaft 13 and the driven gear 19. In the sunroof drive device including the above, the cam 20 is integrally formed on the lower surface 19a of the driven gear 19, and the limit switch 21 is formed in the space below the driven gear 19 and on the radial side of the transmission gear 14. And place it in
By attaching and fixing the frame 10 to the support portion that supports the driven gear 19, the panel position detection system power transmission path from the transmission gear 14 to the detection switch 21 is formed in an open U-shape facing downward. is there.

(Operation) The cam 20 of the detecting means 17 is formed on the lower surface of the driven gear 19, and the position of the driven gear 19 can be lowered, whereby the dimension of the output shaft 13 is shortened and the drive gear 18 and the feed gear 18 are fed. The position of the gear 16 can be lowered, the upper end position of the drive device is lowered, and the overall vertical dimension of the drive device can be shortened.

In addition, the limit switch 21 operated by the cam 20
Is disposed in a space (dead space) formed below the driven gear 19 and laterally in the radial direction of the transmission gear 14, and is attached and fixed to a support portion of the frame 10 supporting the driven gear 19. The drive device is formed smaller in the radial direction of the driven gear 19 by the amount of the limit switch 21.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 5, reference numeral 1 denotes a panel for opening and closing an opening 3 of a roof 2 of a vehicle so that the opening 3 can be opened and closed. The rear portion of the panel 1 is supported via an opening / closing mechanism 8 including a cam plate 4, a link 5 and a slider 6. Has been done. By pushing and pulling the slider 6 with the geared cable 7, the panel 1 is moved from the fully closed position A shown by the solid line in FIG. 5 to the slide open position B shown by the one-dot chain line and the tilting open position C shown by the two-dot chain line. Each of them is configured to be movable by rotating the motor 11 in the opposite direction.

Reference numeral 9 denotes a drive device for driving the cable 7, which is arranged below the front part of the roof 2. As shown in FIGS. 1 to 5, a motor 11 is fixed to a frame 10 and a frame 10 is provided.
The output shaft 13 is rotatably supported by the support wall 12 by vertically penetrating it. A worm wheel (transmission gear) 14 that meshes with a worm of the motor 11 is provided in a portion of the output shaft 13 that projects downward from the support wall 12, and the worm wheel 14 is integrally extended from the support wall 12. Bottomed cylindrical wall
Covered by 15. A feed gear 16 that meshes with the cable 7 and drives it is provided in a portion of the output shaft 13 that projects upward from the support wall 12.

Further, the driving device 9 has a detecting means 17 for detecting the position of the panel 1 by the power of the output shaft 13 and controlling the motor 11. The detection means 17 is a drive gear 18 driven by the output shaft 13, a driven gear 19 meshing with the drive gear 18, a pair of cams 20a and 20b, and a limit switch that operates by engaging with the cams 20a and 20b. (Detection switch) 21a, 21b.

The drive gear 18 is arranged between the feed gear 16 and the support wall 12, and is externally fitted and fixed to the output shaft 13. The drive gear 18 has one or more intermittent teeth 22 on its outer peripheral surface.

The driven gear 19 is fitted onto a support shaft 23 projectingly provided on the support wall 12 and abutted and supported on the support wall 12. The axis of the support shaft 23 is parallel to the axis of the output shaft 13. Further, a meshing tooth 24 that meshes with the intermittent tooth 22 of the drive gear 18 is formed on the outer peripheral surface of the driven gear 19, and the driven gear 19 is intermittently rotated by a constant pitch for each rotation of the drive gear 18. It has become so. Then, the panel 1 moves from the sliding open position B to the fully closed position A.
Driven gear 19 is up to 36
It is set to rotate 0 °.

The cams 20a, 20b are formed on the lower surface 19a of the driven gear 19 in the circumferential direction and are arranged inside and outside in the radial direction. These cams 20a,
20b has recesses 25 and 26, respectively. By forming the cams 20a, 20b on the lower surface 19a of the driven gear 19, the cams 20a, 20b are provided as compared with the conventional driven gears having the cams formed on the outer peripheral surface.
The driven gear 19 is thinned by the amount of b, and the gap between the drive gear 18 and the worm wheel 14 is narrowed accordingly, so that the driving device 9 is thinned in the axial direction of the output shaft 13. Due to this reduction in thickness, it is possible to increase the distance between the occupant's head and the drive device 9.

The limit switches 21a and 21b are arranged below the driven gear 19, and are mounted on the side surface of the mounting wall 28 formed below the support wall 12 of the supporting portion of the support shaft 23 by a bolt 27 penetrating the driven gear 19 and the diameter of the worm wheel 14. It is located in the dead space on the side. The upper portions of the limit switches 21a and 21b project upward from the openings 29 formed in the support wall 12 and face the cams 20a and 20b, respectively. The contact arms 30 and 31 of the limit switches 21a and 21b are cams 20a and 20b, respectively.
The cam 20a, 20b operates by facing the concave portions 25, 26 of the cams 20a, 20b. The limit switch 21a is for stopping the motor, and the concave portion 25 of the cam 20a is formed so that the limit switch 21a operates when the panel 1 reaches the fully closed position A, and the motor 11 is stopped when the operation is performed. 1 automatically stops at the fully closed position A. The limit switch 21b is for motor deceleration, and the panel 1 is in the fully closed position A,
The recess 26 of the cam 20b is set so that the limit switch 21b operates a little before reaching the slide open position B and the tilt open position C.
Are formed at three positions, and the motor 11 is switched to a constant speed during the operation, so that the panel 1 is decelerated at the respective positions A, B, C and in the vicinity thereof. The recess 25 of the cam 20a may be formed so that the panel 1 automatically stops at the sliding open position B and the tilting open position C as well. The present invention can also be applied to other types of sunroofs. Further, although the drive gear 18 is fixed to the output shaft 13 in the above embodiment, it may be arranged as shown in FIG. That is, the drive gear 18 is connected to the output shaft 13
It is fitted onto the underside of the drive gear 18 so that it can move freely in the axial direction.
a is formed, its leg portion 18a is in contact with the upper surface of the support wall 12, and the drive gear 18 is further urged downward by a spring 32. In this case, since the drive gear 18 and the driven gear 19 are abutted and supported by the same member, there is no relative positional deviation in the axial direction between them, and the intermittent teeth 22 of the drive gear 18 and the mesh of the driven gear 19 are eliminated. The meshing with the artificial teeth 24 is stable, and tooth skipping due to poor meshing is prevented. Also, since the meshing is stable,
The axial escape portions of the intermittent teeth 22 and the meshing teeth 24 become unnecessary, and the gears 18, 19 can be made thinner accordingly, so that the device 9 can also be made thinner.

Further, the meshing teeth 24 of the driven gear 19 may be formed as shown in FIG. That is, the meshing teeth 24 are formed separately from the gear body 19 ', the gear body 19' is formed of a rigid body such as metal, and the meshing teeth 24 are formed of hard rubber or resin. That is, the outer peripheral surface of the gear body 19 ′ is formed with a notch in a step shape over the entire circumference to form a mounting portion 33 for mounting the meshing teeth 24, and the mounting portion 33 has a side peripheral surface 33 a which is cut out. A large number of protrusions 33b for stopping and stopping are formed in the circumferential direction. And
The mating teeth 24 are integrally formed on the outer peripheral surface of a ring-shaped mounting body 34 made of the same material, and the inner peripheral surface of the mounting body 34 is provided with a recess 34a that fits into the protrusion 33b of the mounting portion 33. The gear teeth 24 are attached to the gear body 19 'via the attachment body 34. According to this, the intermittent teeth 22 of the drive gear 18 are
The impact sound between the two teeth due to the intermittent meshing (impingement) of the meshing teeth 24 is prevented. The driven gear 19 may be formed of an elastic body as a whole.
Intermittent teeth due to deformation of the boss 35 or gear that fits in the
Poor meshing between 22 and the meshing teeth 24 occurs.

(Effect of the Invention) According to the present invention, the transmission gear 14 driven by the motor 11 about the vertical axis is arranged beside the motor 11, and the output shaft 13 is coaxial with the transmission gear 14. And a feed gear 16 for driving a cable 7 that moves the panel 1 that opens and closes the roof opening 3 above the transmission gear 14 of the output shaft 13.
And a detection means 17 for controlling the motor 11 by detecting the position of the panel 1 by the power of the output shaft 13. The detection means 17 includes a transmission gear 14 and a feed gear 16 of the output shaft 13. A drive gear 18 fixed between the drive gear 18 and a radial side of the drive gear 18, the axis of which is parallel to the axis of the output shaft 13, and a constant pitch for each rotation of the drive gear 18. A driven gear 19 that is rotated by one, a limit switch 21 that detects the position of the panel 1, and a cam 20 that is provided on the driven gear 19 to operate the limit switch 21 when the panel 1 reaches the detection position. In a sunroof drive device including a frame 10 for mounting and supporting the motor 11, the output shaft 13, and the driven gear 19, the cam 20 is integrally formed on the lower surface 19a of the driven gear 19, and the limit switch 21 is provided. Is below the driven gear 19 and on the radial side of the transmission gear 14. It is arranged in the space formed toward
By attaching and fixing the frame 10 to the support portion that supports the driven gear 19, the panel position detection system power transmission path from the transmission gear 14 to the detection switch 21 is formed in an open U-shape downward. The following effects are achieved.

First, the limit switch 21 does not largely project outward in the radial direction of the driven gear 19, and therefore the detection means 17
The length of the driven gear 19 in the radial direction can be shortened, and the drive device can be made compact in that direction. Also, since the lower end of the drive device is determined by the motor 11, the limit switch
By providing 21 in the space formed below the driven gear 19 and to the radial side of the transmission gear 14, the overall vertical dimension of the drive device is not increased, but rather the cam is By not providing it on the outer circumference, the position of the driven gear 19 can be lowered by that amount, so that the output shaft 19
By shortening the dimension of 13, the position of the drive gear 18 and the feed gear 16 can be lowered, the upper end position of the drive device can be lowered, and the overall vertical dimension of the drive device can be shortened. A large clearance (head clearance) from the portion can be taken.

From the above, it is possible to provide a compact sunroof drive device in the axial direction and the radial direction of the output shaft 13, which facilitates installation, requires a small installation space, and is easy to store and store. The practical effect that the space can be reduced, packaging at the time of transportation is easy, and a large amount can be packed can be obtained.

Further, the limit switch 21 is arranged in a space formed below the driven gear 19 and on the radial side of the transmission gear 14, and is fixedly attached to the support portion of the frame 10 supporting the driven gear 19. , The conventional frame limit switch mounting part is not required, so that the material and weight can be reduced.
The wiring can be shortened and simplified as it approaches 11, and the limit switch 21 can be protected by surrounding members.

Also, in manufacturing the driven gear 19 with a mold,
As in the prior art, in the case where the occlusal teeth and the cam are formed on the outer peripheral surface of the driven gear, the mold division becomes complicated, but in the present invention, the cam 20 is placed on the lower surface of the driven gear 19 in comparison. Since it is formed in the above, it is possible to simplify the division of the mold (only the upper and lower parts can be molded).

[Brief description of drawings]

The drawing shows an embodiment of the present invention, FIG. 1 is a front view,
2 is a sectional view taken along the line II-II in FIG. 3, FIG. 3 is a plan view, FIG. 4 is a bottom view, and FIG. 5 is a sectional view taken along the line VV in FIG. FIG. 7 is an explanatory view showing the opening / closing operation of the panel, FIG. 7 is a sectional view showing a modified example of the drive gear, and FIG. 8 is a sectional view showing a modified example of the driven gear. 1 ... panel, 2 ... roof, 3 ... opening, 9 ... driving device, 13
… Output shaft, 14… Worm wheel, 17… Detection means, 18…
Drive gear, 19 ... Drive gear, 19a ... Bottom surface, 20 ... Cam, 21 ...
Limit switch.

Claims (1)

[Scope of utility model registration request] 1. A transmission gear 14 which is driven by the motor 11 about an axis in the vertical direction is arranged laterally of the motor 11, and an output shaft 13 is coaxially provided on the transmission gear 14. 13
A drive feed gear 16 for driving a cable 7 for moving the panel 1 for opening and closing the roof opening 3 is provided above the transmission gear 14, and the position of the panel 1 is detected by the power of the output shaft 13 to drive the motor 11 The detecting means 17 for controlling is provided, and the detecting means 17 includes a drive gear 18 fixed between the transmission gear 14 and the feed gear 16 of the output shaft 13, and a radial direction side of the drive gear 18. A driven gear 19 whose axis is arranged in parallel with the axis of the output shaft 13 and which is rotated by a constant pitch for each rotation of the drive gear 18, and a limit switch 21 for detecting the position of the panel 1. , A cam provided on the driven gear 19 to operate the limit switch 21 when the panel 1 reaches the detection position
In a sunroof drive device including a frame 10 for mounting and supporting the motor 11, the output shaft 13, and the driven gear 19, the cam 20 is integrally formed on the lower surface 19a of the driven gear 19, and the limit The switch 21 is arranged in a space below the driven gear 19 and on the radial side of the transmission gear 14, and
By attaching and fixing the frame 10 to the support portion that supports the driven gear 19, the panel position detection system power transmission path from the transmission gear 14 to the detection switch 21 is formed in an open U-shape facing downward. Characteristic sunroof drive device.