JPH0242686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive mechanism for a tiltable sliding cover of a motor vehicle roof; the sliding cover comprises a transmission, at least one threaded cable, and a cover adjustment unit coupled to the threaded cable. and an electric motor for driving the sliding cover via the cover adjustment unit, and the cover adjustment unit has a switch device which is driven in connection with the unit and operates according to the position of the cover adjustment unit, and the switch device has an electric motor that drives the sliding cover via the The present invention relates to a device having the purpose of cutting off the power supply to the electric motor at the position of the cover adjustment unit corresponding to the closed position.

This type of drive mechanism is known from US patent application Ser. No. 291,055, filed Aug. 7, 1981. To complete the functionality of this mechanism, the response of the switch device must be precisely synchronized with the adjustment movement of the sliding cover, so that the cover starting from the retracted or tilted stowed position can be stopped precisely in the closed position. It is important to Since it is unavoidable to eliminate errors, the above synchronization operation must be performed for each individual vehicle. In the above-mentioned prior application, when the switch device is in a specific position, the cover adjustment unit and the cover are first installed in the automobile, and the unit and This synchronous movement was achieved by manually pushing the cover into a predetermined position.

The aim of the invention is to provide a drive mechanism that is faster and easier to install.

Assuming that a drive mechanism of the type mentioned at the outset is used, it is possible to carry out the present invention as shown in the embodiment by providing a clutch between the cover adjusting unit and the switching device, which breaks the connection between the cover adjusting unit and the switching device. The object of the invention is achievable.

According to the invention, it is possible to provide a cover adjustment unit with one or several threaded cables, a motor with transmission, and a switch device that locks the clutch in a predetermined position when the clutch is disengaged. If necessary, the cover adjustment unit may be moved together with the sliding cover into a predetermined position, conveniently in the maximum tilt position, by means of a motor. When the cover adjustment unit reaches this predetermined position, the clutch is engaged to effect a connection between the cover adjustment device and the switch device which is aligned with this predetermined position. This structure greatly contributes to the simplification of the device. Most of the drive parts required to adjust the cover have already been assembled and adjusted before they are assembled into the vehicle on the production line, making accurate synchronized adjustment possible with a small amount of manual labor.

In order to avoid sudden movement of the adjusted switching device when the clutch is disengaged, an additional aspect of the invention is to provide a closure device which closes the switching device when the connection between the cover adjustment unit and the switching device is broken by the clutch. All you have to do is block it.
To particularly simplify construction, the clutch and closure device may conveniently be integrated into a monolithic unit.

The drive of the switch device is transmitted by the threaded cable via a pinion which together with the threaded cable forms a clutch. The pinion is conveniently mounted on a pinion shaft between a first axial position in which the pinion disengages the threaded cable and a second axial position in which the pinion engages the threaded cable. It is possible to move in the axial direction. In this way, the structural element can be used as a clutch without incurring too many extra costs. In this case, the molded engagement element can be provided as a closure device mounted on the pinion shaft, which when the pinion shaft is in the first axial position and assumes the predetermined angular position, the mating element mounted on the housing. element and disengages the mating element at a second axial position of the pinion shaft. In this way, the closure device can also be manufactured with simplicity, reliability, cost efficiency, etc.

For convenience, the switch device is provided with a stepped gear system, which includes a ratchet wheel connected to the pinion shaft so that relative rotation is not possible in both axial positions, and a limiter that controls the power supplied to the electric motor. - Consists of a stop wheel that operates the contact arm of the switch.

The engagement element of the pinion shaft expediently consists of only one or several adjacent teeth, in which case the counterpart element consists of an internal toothing mounted on the housing, which internal toothing is longer than the engagement element of the pinion shaft. It extends over a circular area. In order to make the pinion shaft easily adjustable, the pinion shaft is preferably provided at one point on the front face with a radial slot into which a suitable tool, for example a screwdriver, can be inserted. In this case, it is preferable that the part of the housing containing the pinion shaft is provided with one or several radial slots coaxial with the pinion shaft at the slotted end of the pinion shaft. In combination with the radial grooves of the pinion shaft, these radial grooves can be used as adjustment marks.

The present invention will be described in detail below with reference to the accompanying drawings.

According to the basic electrical circuit diagrams of FIGS. 9 and 10, the manual reverse polarity switch 1, which automatically returns to the neutral position of FIG. On the other hand, the contacts 4, 5 are switched. Contacts 3 and 4 are connected to the positive pole 15 of the vehicle, and contacts 2 and 5 are connected to the negative pole 16. Contact arms 11 and 12 of the reverse polarity switch 1 are connected to terminals of the motor 6 via both or one of the first and second relay lines. Therefore, depending on the switching position of the reverse polarity switch 1, the electric motor can be rotated in forward and reverse directions. In this way, the sliding cover 10 shown in FIGS. 11 and 13 is sloped upwards from the roof opening 24 (FIG. 3) or the transmission 25 connected to the motor 6, at least one It is pushed into the underside of the fixed roof panel by means of the main voltage-tight cable 7 as well as a movable bridge 8 and a lever part 9 (diagrammatically representing the cover adjustment unit) (FIG. 11). The switch 14 is provided in a trunk line 18 that is energized by an impulse relay 17. One side of the control wiring for the relay 17 is connected to the first connection 1.
9 is connected between the switch 14 and the contact arm 11, and the other is connected to the relay line 21 by a second connection 20.
is connected to. Micro-switch 13 actuated by a trip device diagrammatically represented at 22
is provided within the connection 20. Tripping device 2
2 is driven by the motor 6 and has a concave cam 22a.
This cam is connected to the impulse relay 17 and the relay line 21 when the sliding cover 10 is closed (FIG. 12).
(Fig. 9).

When the reverse polarity switch 1 is switched towards contacts 2 and 3 (FIG. 10), current is first passed through the impulse relay 17 via the micro switch 13 in the position of FIG. 9, closing the switch 14 and switching on the motor. 6 is electrically connected to poles 15 and 16. As a result, the motor 6 drives the transmission 25 and the cable 7 to pull the sliding cover 10 back from the closed lid position of FIG. 12 to the open lid position of FIG. 11. At the same time, the trip device 22 operates so that the micro-switch 13 opens (corresponding to its movement from the operating position of FIG. 8b to the position of FIG. 8c). If the reverse polarity switch 1 remains activated, the sliding cover 10 is pulled back until the end position is reached. To close the sliding cover 10 again, the reverse polarity switch 1 is turned on to reverse the direction of rotation of the motor 6. When the cover 10 is in the closed position, the concave cam 22a is connected to the micro switch 1.
9. Move the contact arm 64 of No. 3 to the position shown in FIG. Impulse relay 17 is energized, switch 14 opens, and current to motor 6 is cut off. When the reverse polarity switch 1 is switched towards contacts 4, 5, the impulse relay 17 responds again and the switch 14 closes. The motor 6 is driven in a direction of rotation to tilt the slide lever 10 as shown in FIG. 13 until the trip device moves to the position of FIG. 8a and opens the switch 13.

As shown in FIG.
It is attached to a motor support 26 that also supports the motor. The transmission 25 has a gear housing 30,
A motor shaft 31 projects into this. A worm gear 32 that engages with a worm ring 33 is fitted onto the motor shaft 31, and the worm ring is fitted onto a shaft 34 and rotatably housed in the gear housing 30. The shaft 34 also has a pinion 35 fitted therein which engages the pressure-resistant cable 7 .

Clutch housing 37 and counter bearing 38
is also attached to the motor support 26. A pinion shaft 39 is housed within the clutch housing 37 and counterbearing 38 and is rotatable and axially movable by a limited amount.
A movable pinion 40 is attached to the pinion shaft 39, and by adjusting the pinion shaft 39 in the axial direction, the cable 7 can be selectively maintained in an open relationship (FIG. 2) or an engaged relationship (FIG. 3). ing. The pinion shaft 39 has a flat surface 41, only one of which can be seen in FIGS. 2 and 3, and both of which can be seen in FIG. A gear wheel 42 is mounted (sliding) on the pinion shaft 39 and has a center hole in the gear wheel 42 having a flat surface that engages the flat surface 41 . The flat surface 41 of the pinion shaft 39 and the complementary flat surface of the center hole of the gear wheel 42 ensure that the pinion shaft 39 and the gear wheel 42 rotate together in the rotational direction. In the axial direction, the pinion shaft can be moved and adjusted relative to the gear wheel (see Figures 2 and 3).
figure). Together, the gear wheel 42 and the trip device 22 form a stepped drive gear system in which the trip device 22 is activated while the sliding cover 10 moves from the most retracted position past the closed lid position to the most tilted position. The gear ratio is determined so that the rotation path is within 360°. A stepped drive gearing of this type is known per se, for example from DE-GM 76 29 034. Conveniently, the stepped drive gearing is that described in US patent application Ser. No. 291,055, cited at the outset. This means that the movement step carried out by the tripping device 22 is extended in the vicinity of the opening position of the sliding cover 10, and the angular velocity of the tripping device 22 is additionally or solely reduced during said movement step. ing.

A molded engagement element 44 is also mounted on the pinion shaft 39 and has five adjacent teeth 45 (FIG. 5).
When the pinion shaft 39 is in the position shown in FIG. 2 with the clutch released, the molded engagement element 44
It engages with the counterpart element 46 at internal teeth 47 within 8. Internal tooth 4 having 10 teeth shown in the example
7 extends over a longer circular area than the teeth 45 forming the shaped engagement element 44. By doing this, the molded engagement element 44 and the counterpart element 46
The engagement with the pinion shaft can be performed at one of several relatively different rotational positions on the pinion shaft.

In FIGS. 1 to 4, the pinion shaft 39 has a radial long groove 49 on the bottom surface at one location on the front side surface. The counter bearing 38 is a portion of the long grooved end of the pinion shaft and has several radial long grooves 50 concentric with the axis of the pinion shaft 39, which visually adjust the angular position of the long groove 49 of the shaft 39. It is used for doing things. In FIGS. 3 and 4, one of the five long grooves 50 is shown in the center, which is deeper and wider than the others. Although this is not essential, it is useful to identify the center of the adjustment range.

The electric motor 6, the transmission 25, the stepwise gearing (parts 22, 42) and the micro-switch 13 are skillfully combined according to FIG. 1 into a pre-assembled and adjusting unit, the pinion shaft 39 being shown in FIG. It is possible to attach it to a car while leaving it in the same position. In this state, the clutch consisting of the moving pinion 40 and the threaded cable 7 is released;
The closure device with the molded engagement element 44 and the counter element 46 holds the pinion shaft 39 in the preadjusted position. This angular position of the pinion shaft 39 is determined by the switch device (gear wheel 42, trip device 22,
Corresponding to the preadjusted position of the micro-switch 13), this position is used for a specific position, in the present case directed to the entire tilting position of the sliding cover 10.
The radial long groove 50 and the radial tool receiving long groove 49 are
It is possible to preadjust the angular position of the pinion shaft 39 and the gear wheel 42 with respect to one or both of the counterbearing 38 and the clutch housing 37. For this purpose, an elongated groove 51 may be provided on the outside of the clutch housing 37, which elongated groove can be used to connect one of the teeth of the gear wheel 42 or one of the tooth roots.
is adjustable. In making this pre-adjustment in this regard, shaft 39 is moved from the position of FIG.
It should be noted that it is necessary to move upwards. For this reason, a sufficient margin must be allowed between the engaged and released positions. Furthermore, even when moving upward like that (this is possible by applying upward force to the tool inserted into the long groove 49), the long groove 5
0 allows visual angular position adjustment. It is also possible to provide a groove 52 in this wheel to aid in the adjustment of the tripping device 22;
This groove may be aligned, for example, with a blind groove in the lower part of the clutch housing 37 (not shown). The closure devices 44, 46 prevent accidental misadjustment of the switch device.

The cover adjustment unit, shown diagrammatically by the transfer bridge 8 and lever part 9, is a separate pre-assembled adjustment unit driven in conjunction with the assembly unit of FIG. 1 mounted on the motor support 26 by a threaded cable 7. It may be manufactured as By means of the motor 6, the sliding cover 10 can then be moved to a predetermined position, in this example to the fully tilted position of FIG. When the sliding cover 10 reaches the above position, the pinion shaft 39 is immediately moved from the position shown in FIG. 2 to the position shown in FIG. This operation can be done by applying manual force, for example with a thumb or a tool inserted into the long groove 49, and then the closure devices 44, 46
will be released. At the same time, clutches 7, 40 are engaged. With such a simple method, the cover adjustment and the switch devices 13, 22, 42 can be adjusted synchronously.

Subsequent repairs and preservation work can be carried out using the same simple method. For this purpose, the sliding cover 10 is simply pulled back to a predetermined position (in this example, the fully tilted position shown in FIG. 13), and at that point a manual force is applied to the upper end of the shaft 39 to remove the pinion shaft. 39 is moved in the axial direction from the position shown in FIG. 3 to the position shown in FIG. This allows removal and replacement of the cover, cover adjustment unit or other drive parts. switch device 13,
In order to resynchronize the movement of 22, 42 with the movement of the cover, after the sliding cover 10 has been moved to the fully tilted position, the closure devices 44, 46 must be opened again and the clutches 7, 40 engaged. It won't happen.

The counter-bearing 38 has a flexible projection 54 which abuts an annular V-shaped groove 55 in the pinion shaft 39 when the clutches 7, 40 are released and an umbrella 56 when the clutches are engaged. , thus determining the axially related positions of the two lower ends of the pinion shaft 39. In order to move the pinion shaft 39 from the above two positions, it is necessary to overcome the spring force generated by the protrusion 54.

Although the present invention has been described above using one embodiment, the present invention is not limited to this embodiment, and improvements and changes known to those skilled in the art can be added. Accordingly, the present invention is not limited to the embodiments described herein, but includes all modifications and changes that fall within the scope of the claims.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the arrangement of the drive mechanism of the tiltable sliding cover, including the electric motor, transmission, switch device, and clutch. FIG. 2 is a cross-sectional view of the device of FIG. 1 in the open state with the clutch in the direction of the arrow, the pinion shaft being shown in side view. FIG. 3 shows the clutch in the sectional view of FIG. 2 in an engaged state. FIG. 4 is an exploded partial cross-sectional view of the pinion, pinion shaft, and opposing bearings forming part of the closure device, with the pinion shaft shown in a different angular position than in FIGS. 1-3. FIG. 5 is a front view of the pinion and pinion shaft of FIG. 4 in the direction of arrow V. FIG. 6 is a plan view of the opposed bearing shown in FIG. 4 in the direction of the arrow. FIG. 7 is a partial plan view of the opposed bearing shown in FIG. 4 in the direction of the arrow. FIG. 8 shows a portion of the switch device of the device of FIG. 1 in three different rotational states. FIG. 9 is a basic circuit diagram of the drive mechanism in the switched state corresponding to the closed position of the sliding cover. FIG. 10 is the basic circuit diagram of FIG. 9 in a switched state corresponding to the retracted intermediate position of the sliding cover. FIG. 11 is an exemplary diagram of a motor vehicle roof with a sliding cover in a retracted position. 12 shows the roof of FIG. 11 with the sliding cover in the closed position, and FIG. 13 shows the roof of FIG. 11 with the sliding cover in the tilted position. 6...Electric motor, 7...Threaded cable, 7,40...
Clutch, 8, 9...Cover adjustment unit, 10...
Sliding cover, 11... Contact arm, 13... Lissit switch, 22... Tripping device, 42... Gear wheel, 13, 22, 42... Switch device, 25...
Transmission motor, 30... Housing, 37... Clutch housing, 38... Opposing bearing, 39... Pinion shaft, 4
0... Transmission pinion, 44... Molded engagement element, 46...
Counterpart element, 44, 46...occlusion device, 45...teeth,
47...Internal tooth, 49...Long groove.

Claims (1)

[Claims] 1. An electric motor for driving a sliding cover via a transmission, at least one threaded cable, and a cover adjustment unit coupled to the threaded cable, and interlocked with the cover adjustment unit. a switch device connected thereto and actuated in accordance with the position of the cover adjustment unit; said switch device cuts off the power supply to the electric motor at a position of the cover adjustment unit corresponding to a closed position of the sliding cover; A drive mechanism for a tiltable sliding cover of an automobile roof, characterized in that a clutch means is provided between the cover adjustment unit and the switch device for disconnecting the interlocking connection between the cover adjustment unit and the switch device. 2. The drive mechanism according to claim 1, wherein the drive of the switch device is transmitted by a threaded cable via a movable pinion which together with the threaded cable constitutes a clutch. 3. A movable pinion is mounted on an axially movable pinion shaft, the pinion shaft having a first axial position disengaging the pinion and the threaded cable and a second axial position disengaging the pinion and the threaded cable. 3. The drive mechanism according to claim 2, wherein the drive mechanism is movable in the axial direction between the axial position and the axial position. 4. The closure device comprises a molded engagement element mounted on the pinion shaft, which engagement element attaches to the clutch device housing when the pinion shaft assumes a predetermined angular position in the first axial position. 4. The drive mechanism according to claim 3, wherein the drive mechanism engages with the counterpart element at the second axial position of the pinion shaft and disengages from the counterpart element at the second axial position of the pinion shaft. 5. The engagement element of the pinion shaft is composed of at least one tooth, and the mating element is composed of an internal tooth attached to the housing, the internal tooth having a circular region longer than the at least one tooth on the pinion shaft. 5. The drive mechanism according to claim 4, wherein the drive mechanism extends over the entire length of the drive mechanism. 6. The drive mechanism according to claim 5, characterized in that a radial long groove is provided at one end of the pinion shaft. 7. Claim 6, characterized in that in the region of the end of the pinion shaft having the long groove, at least one radial long groove is provided in a part of the housing concentrically with the longitudinal axis of the pinion shaft. Drive mechanism as described. 8. A switch device for controlling the actuation of a gear wheel coupled to a pinion shaft so as to prevent mutual rotation in both of the axial positions, and a contact arm of a limit switch for controlling power supply to an electric motor. 8. A drive mechanism according to claim 3, characterized in that it is constituted by a stepped gearing having a tripping device. 9. The drive mechanism according to claim 8, further comprising a spring stopper for preventing movement of the pinion shaft at both of the axial positions. 10. The drive mechanism according to claim 3, 4, 5, 6, or 7, further comprising a spring stop device for preventing movement of the pinion shaft at both of the axial positions. 11 If the interlocking connection between the cover adjustment unit and the switch device is severed by the clutch device,
3. The drive mechanism according to claim 1, further comprising a closing device for closing the switch device. 12. The drive mechanism of claim 11, wherein the clutch device and the closure device are combined into one integral unit.