JPH051536U - Drive system for automobile sunroof - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent uneven wear of the driving gear and abnormal noise to improve quality. [Structure] A leading gear 53 of a sunroof drive transmission system 11 fixed to a main shaft 23 supported at both ends by a gear case 13.
A drive gear 49 that meshes with the main shaft 23, a metal bush 21 that is loosely fitted to the main shaft 23, and a synthetic resin main gear 19 that is loosely fitted to the bush 21 to transmit the rotational power from the drive motor 17. A metal plate 35 that is loosely fitted to the main shaft 23 and integrally engaged with the main drive gear 19, and is superposed on the upper surface of the bush 21; and a clutch member that is fixed to the main shaft 23 and can be integrally fastened to the metal plate 35. 37 and an urging spring 39 that is fixed to the main shaft 23 and urges the clutch member 37 toward the metal plate 35 side. And a drive gear 49, and a synthetic resin plate 51 is interposed between the main drive gear 19 and the inner wall surface of the gear case 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drive device for an automobile sunroof.

[0002]

[Prior Art]

 In general, the sunroof of an automobile can be opened and closed by the power of a drive unit.

The drive device is generally configured such that the rotational power from the motor is transmitted to the main drive gear and is transmitted from the main drive gear to the sunroof drive transmission system via the clutch member.

The clutch member provided on the main drive gear is urged by an urging spring, and the urging force secures the prescribed engagement force between the main drive gear and the clutch member. This clutch member prevents the drive motor that transmits power to the driving gear from applying unreasonable force when, for example, a large load is applied to the sunroof drive transmission system and the fastening surface slides. Is equipped with.

[0005]

[Problems to be solved by the device]

 As described above, the driving gear and the clutch member secure the fastening force defined by the urging force of the urging spring, and the fastening surface of the driving gear and the clutch member slides when the load acts.

By the way, since the driving gear is made of synthetic resin in terms of workability and weight reduction, the fastening surface for the clutch member is easily deformed by frictional heat generated at the time of sliding and the thickness is reduced. There was a problem. When the thickness of the fastening surface decreases, the urging force of the urging spring becomes weaker, and the prescribed fastening force required to transmit the power cannot be secured, and slippage is more likely to occur. A metal bush is provided in the fastening surface area of the driving gear.

In this case, the driving gear made of synthetic resin is loosely fitted to the metal bush with play. This play is designed so that friction does not occur even if only the main gear idles when the clutch slips against the metal bush, but on the other hand, the play causes wobble during rotation of the main gear. There was a problem that a wave phenomenon occurred. When the waving phenomenon occurs, uneven wear may occur, transmission efficiency may deteriorate, or noise may occur due to interference with the gear case, resulting in a decrease in quality and a sense of quality.

Therefore, an object of the present invention is to provide a drive device for an automobile sunroof which is devised so that stable rotation of the main drive gear can be obtained for a long period of time.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a drive gear fixed to a main shaft supported at both ends in a gear case and meshing with a leading gear of a sunroof drive transmission system, and a metal bush loosely fitted to the main shaft. A synthetic resin main drive gear that is loosely fitted to the bush and has rotational power transmitted from the drive motor; and a bush that is loosely fitted to the main shaft and integrally engages with the main drive gear. A metal plate superposed on the upper surface of the main shaft, a clutch member fixed to the main shaft and capable of being integrally fastened to the metal plate, and an urging spring fixed to the main shaft for urging the clutch member toward the metal plate. An urging member for urging the driving gear toward the clutch member is provided between the driving gear and the drive gear, while a synthetic resin plate is interposed between the driving gear and the inner wall surface of the gear case. Ah .

[0010]

[Action]

 According to such a drive device, the power from the drive motor is transmitted from the main drive gear to the main shaft via the clutch member, and from the main shaft to the drive gear and the sunroof drive transmission system.

During this operation, the driving gear is urged substantially uniformly upward by the ring-shaped urging member, and the upper surface of the main gear is correctly pressed by the synthetic resin plate, so that the undulating phenomenon does not occur and the driving gear is long. A stable rotation state can be obtained over the period.

[0012]

【Example】

 An embodiment of the present invention will be described in detail below with reference to FIGS.

In FIG. 4, reference numeral 1 shows a lid provided in a roof opening 3 for an automobile. A seal member 4, such as a weather strip, which elastically contacts the roof opening edge 3a when the lid 1 is fully closed to secure a seal, is attached to the outer peripheral edge of the lid 1, and the lid 1 has a pair of gear parts. It is interlockingly connected to a drive motor 7 via drive wires 5 and 5.

The drive motor 7 is capable of normal rotation and reverse rotation, is arranged inside the roof panel 9, and the motor axis X is arranged along the vehicle width direction. The roof panel drive transmission system 11 and the control transmission system 12 which will be described later are provided. It is fixed to the flange 15 of the gear case 13 that incorporates by a bolt 16.

A worm 17 is provided on the output shaft of the drive motor 7, and a driving gear 19 serving as a worm wheel meshes with the worm 17 at a right angle to the axis X.

The main drive gear 19 is loosely fitted to the main shaft 23 via a bush 21, and the upper and lower ends of the main shaft 23 are rotatably supported by bearing members 25. The driving gear 19 is formed of a synthetic resin material and has an opening concave portion 27 on the upper surface side. Inside the opening concave portion 27, locking step portions 29 are provided at a predetermined interval, while a fitting is made in the center. A hole 31 is provided. A ring-shaped engagement groove 33 is provided on the bottom surface side of the driving gear 19. The fitting hole 31 of the driving gear 19 is loosely fitted to the bush 21 fixedly fitted to the main shaft 23 with play.

The bush 21 is made of metal and includes a flange portion 21 a and a shaft cylinder portion 21 b fitted and fixed to the main shaft 23. A metal plate 35 and a clutch member 37 are assembled in the opening recess 27 of the driving gear 19.

The metal plate 35 has a tongue-shaped engagement portion 35 a that is folded back downward, and is fitted and fixed to the main shaft 23 in a state of being superposed on the upper surface of the flange portion 21 a of the bush 21. .. Further, the engaging portion 35a of the metal plate 35 engages with the locking step portion 29 of the driving gear 19 in a disengageable manner. As a result, the driving gear 19 is secured to be integrally connected to the main shaft 23 via the metal plate 35.

The clutch member 37 is fitted in and fixed to the main shaft 23, and a prescribed fastening force is secured to the metal plate 35 by the biasing force of the biasing spring 39.

The urging spring 39 is of a disc spring type and is interposed between the nut 43 and the urging spring 39 by tightening a nut 43 screwed into the upper end screw portion 41 of the main shaft 23. A predetermined spring pressure and biasing force can be obtained through the cylindrical washer 45.

Further, a ring-shaped rubber biasing member 47 is attached to the engaging groove 33 provided on the bottom surface of the driving gear 19 and protrudes downward from the engaging groove 23. The lower end of the biasing member 47 is in elastic contact with the upper surface of the drive gear 49. As a result, the driving gear 19 is uniformly urged upward, and the ring-shaped protrusion 52 formed on the upper surface side of the driving gear 19 contacts the inner wall surface of the gear case 13 to prevent the upward movement. It is held down. Between the upper surface of the driving gear 19 and the ring-shaped ridge 50 protruding from the inner wall surface of the gear case 13, a flexible nylon-based thin film containing molybdenum disulfide is added to reduce sliding resistance. A synthetic resin plate 51 is interposed.

On the other hand, the drive gear 49 is meshed with the first gear 53 at the head of the sunroof drive transmission system 11. The first gear 53 meshes with the second gear 59 fixed to the second gear shaft 57 while being loosely fitted to the first gear shaft 55 both ends of which are supported by the gear case 13, and affects the shape of the drain gutter 9a. A secure meshing condition is ensured.

The second gear shaft 57 is rotatably supported at both ends by the gear case 13 via upper and lower bearing members 61, 61, and one shaft end projects outward from the gear case 13. A third gear 63 that meshes with the gear portions of the drive wires 5 and 5 is fixed to the protruding shaft end portion of the second gear shaft 57, and the drive wires 5 and 5 move by forward or reverse rotation of the third gear 63. However, the movement of the drive wires 5 and 5 enables the chilled control in which the rear end side of the lid 1 rises and the slide control in which the lid 1 slides in the front-rear direction.

The sub gear 65 provided under the drive gear 19 is the head of the control transmission system 12 that transmits power to the control unit 67 that controls the operation of the drive motor 7 in proportion to the movement amount of the lid 1. It meshes with the gear 69. Since the control unit 67 and the control transmission system 12 are outside the scope, detailed description thereof will be omitted.

In the drive device configured as described above, the power from the drive motor 17 is transmitted from the main drive gear 19 to the main shaft 23 via the clutch member 37. The power transmitted to the main shaft 23 is transmitted from the drive gear 49 to the lead gear 53 of the sunroof drive transmission system 11 and the lead gear 69 of the control transmission system 12. During this operation, if a large load acts on the sunroof drive transmission system 11, the fastening surface between the clutch member 37 and the metal plate 35 will slip. In this case, the fastening surface is not deformed or abraded rapidly by the heat of sliding.

On the other hand, the driving gear 19 is uniformly urged upward by the urging member 47, and the ring-shaped protrusion 52 on the upper surface side is pressed by the plate 51 made of synthetic resin. Therefore, the correct rotation state can be obtained for a long time without causing the waviness phenomenon.

[0027]

[Effect of the device]

 As described above, according to this invention, the correct rotation state of the driving gear can be obtained for a long period of time. Therefore, uneven wear and abnormal noise can be prevented from occurring and the quality can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a driving device according to the present invention.

FIG. 2 is an exploded perspective view of a drive device.

FIG. 3 is a plan view of a drive device.

FIG. 4 is a schematic plan view of an entire sunroof for an automobile.

[Explanation of symbols]

 11 Sunroof Drive Transmission System 13 Gear Case 17 Drive Motor 19 Drive Gear 21 Metal Bushing 35 Metal Plate 37 Clutch Member 39 Biasing Spring 47 Biasing Member 49 Drive Gear 51 Synthetic Resin Plate 53 First Gear

Claims (1)

[Claims for utility model registration] [Claim 1] A drive gear fixed to a main shaft whose both ends are supported by a gear case, which meshes with a leading gear of a sunroof drive transmission system, and a metal bush loosely fitted to the main shaft. A driving gear made of synthetic resin, which is loosely fitted in the bush with play and to which the rotational power from the drive motor is transmitted, and a driving gear that is loosely fitted in the main shaft and integrally engages with the driving gear, and is superposed on the upper surface of the bush. A metal plate, a clutch member that is fixed to the main shaft and can be integrally fastened to the metal plate, and an urging spring that is fixed to the main shaft and urges the clutch member toward the metal plate. A biasing member for urging to the side is provided between the driving gear and the drive gear, and a synthetic resin plate is interposed between the driving gear and the inner wall surface of the gear case. Drive apparatus for an automobile sunroof.