CZ20002989A3 - Driving device of a vehicle part shiftable between end positions - Google Patents

Abstract

Drive device (2) adjustable between vehicle parts end positions, in particular the roof plates of the vehicle roof, p by an electric motor (3) which is in drive with the adjustable part connection, with a gearshift (9) controlling the electric motor (3) to stop the electric motor (3) in at least one advance position of the adjustable part, with the output element (31) rotatably at least indirectly by the electric motor (3) with the shift a body (32) which is mounted on the outlet element (31) and it can move it along a circular path with a sensor (35) sensitive to the magnetic field, associated control gear (9) for operation a shifting device (9), wherein the sensor (35) sensitive to magnetic fields disposes a printed circuit board (20) the control gear (9) and the plate The printed circuit board (20) is arranged inside the housing (6, 7, 8).

Description

Drive device for vehicle part adjustable between end positions

Technique ·

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a drive device for a vehicle part adjustable between end positions, in particular a roof plate of a vehicle, with an electric motor which is in drive connection with the adjustable part. which rotates the output element at least indirectly, with a shifting body mounted on the output element which can move it along a circular arc path, and with a magnetic field sensitive sensor associated with the control shifting device for controlling the shifting device, the magnetic field sensitive device is arranged on the printed circuit board with the components of the control shift device, and wherein the printed circuit board is arranged inside the housing.

BACKGROUND OF THE INVENTION

DE 197 12 185 C1 discloses a drive device for a vehicle part adjustable between end positions, in particular for a roof plate of a vehicle roof, with an electric motor which is connected via a first reduction gear to a pinion mounted on a shaft. The pinion is in drive engagement with the adjusting member, with the shift device for stopping the electric motor at at least one particular position of the adjusting member, with a second reduction gear having a rotatable transmission output element, with a shift body coupled to the transmission output element for operation. the gearshift has at least one north pole and one south pole, and to the shifter. the device includes a magnetic field sensitive sensor that is arranged on the printed circuit board of the shift device. The printed circuit board therefore extends beyond the travel path of the shift housing. As can be seen in FIG. 4 of DE 197-2 185 C1, the printed circuit board in the region of the magnetic field sensitive sensor has a continuation which, for example, projects from an otherwise rectangular plan view of the printed circuit board. This continuation causes considerable waste on the printed circuit board, thereby increasing the cost of wasted material and the cost of removing waste from the material.

The second transmission of this drive device is designed as a kind of eccentric gear transmission. The resulting member, respectively. the output transmission element is here in the form of an internally toothed wheel which is rotatably and concentrically mounted on the shaft of the first reduction gear. Of course, instead of an eccentric gear, a worm gear with an output shaft can also be used, or a worm gear according to German Patent Specification 1,024,373. In the exemplary embodiment of the German patent, the worm gear serves as an output member and the shift housing is pin-shaped. mounted radially on the worm gear. The pin controls the electrical contact.

SUMMARY OF THE INVENTION

The drawbacks of the aforementioned device are eliminated by the drive device of the vehicle part adjustable between the end positions, in particular the roof plate of the vehicle roof, with the electric motor in drive connection with the electric shifting device for stopping the electric motor in at least one predetermined position of the adjustable part. with an output element rotatable at least indirectly by an electric motor, with a gear shifter which is mounted on the output element and can thereby be shifted therethrough. move along a circular arc path with a magnetic field sensitive sensor associated with the shift control device for controlling the shift device, wherein the magnetic field sensitive sensor is disposed on the printed circuit board with the components of the control shift device, and wherein the printed circuit board je usp arranged inside the housing according to the invention, which is characterized in that the printed circuit board is arranged at a radial distance from the movement path of the shift body having the shape of a circular arc, the distance being greater than the dimensions of the magnetic field sensitive sensor and at least one magnetic flux conducting body is provided with the magnetic field sensitive sensor and the shift housing when in the engaged position.

The drive device according to the invention has the advantage that, for example, a rectangular plan can be selected for the conductive path. In order to produce such a rectangularly printed circuit board, it is only technically simple to divide the plate output material longitudinally and transversely. In the manufacture of the conductive magnetic flux body, it is possible to start from a rod material or wire, so that waste is generated only at the ends of the rods or wire coils. Waste from metal wire or rod material can be melted again and so on.

According to the features contained in claim 2, the advantage is that the shifter body can be magnetized in a simple and technically simple manner and further well concentrated the magnetic flux coming from the shifter body to the magnetic field sensitive sensor.

BRIEF DESCRIPTION OF THE DRAWINGS

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An exemplary embodiment of a drive device of a vehicle convertible part according to the invention is shown in the drawings and described in greater detail below with reference to the drawings in which: FIG. 1 is a side and partial cross-section of the drive device; FIG. 3 is an enlarged side view of the detail of FIGS. 1 and 2; and FIG. 4 is a detail of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

The drive device 2 according to the invention shown in FIGS. 1 and 2 has an electric motor 3, a first reduction gear 4, a second reduction gear 5, a housing 6 consisting of a lower part 7 and an upper part 8 and a shift device 9, operating the electric motor 3.

For example, the electric motor 1 is a DC motor and comprises a magnet 12 within the magnet 12 a rotating armature 13, with the armature 13 adjacent to a collector 14 of the armature shaft 15 supporting the armature 13 and collector 14 and first motor shaft bearing 16 and second motor shaft bearing 17. Between the first bearing 16 and the collector 14, for example, there is a hollow magnet body 18 of known type, arranged with an anti-torsion protection on the armature shaft 15, distributed on the periphery, for example, of the north pole and the south pole. At least one sensor 19 is fixedly fixed along the circumference of the hollow body 18. sensitive to magnetic fields, such as a Hall sensor. Hall sensors 19, 19a are mounted, for example, on a printed circuit board 20. This printed circuit board 20 is mounted, for example, on the housing lower part 7, and is oriented in such a way that, when it is at 0 ° 0 9 • 9 · 0 0 0 · 0 * 0 * • 0 * 000 000 00 the smallest spacing of the crosses with the collector 14 and the Hall sensor 19. This is clearly seen in Fig. 1. The crossing of the printed circuit board 20, the collector 14 and the Hall sensor 19 is clearly seen in Fig. 1. 2. The printed circuit board 20 is in the form of a slim rectangle and extends from said region in which the collector 14 and the hollow magnetic body are located, around the first reduction gear 4 and the second reduction gear 5 next to the electric motor 1. relay 21 and male plinth 22 and other electrical elements not shown. For example, conductive paths (not shown) from the relay 21 lead to brushes (not shown) which are spring-loaded to the collector 14. For this reason, the relay 21 is designed so that the motor can be switched on and off in different directions of rotation.

An upper housing part 8 is mounted on the lower housing part 7, wherein the lower housing part 7 and the upper housing part 8 surround the PCB 20 on all sides as a protection. The control gear 9 arranged on the printed circuit board 20 is thus integrated into the drive device 2.

The anchor shaft 15 extends in the region of the first anchor bearing 16 to the worm shaft 25. which engages the worm wheel 26. The worm wheel 26 is rigidly connected to the shaft 27 against rotation and is rotatably supported by the shaft 27 in the lower housing part 7. The worm gear shaft 25, the worm gear 26 and the shaft 27 form a first reduction gear 4. The shaft 27 is connected to a pinion 28 arranged outside the housing part 7. The pinion 28 engages two flexible type pulling and pushing means 29, 30, which are mounted on and connected to the roof plate of a vehicle (not shown). These pulling and pushing means 29, 30 are not part of the invention and can be taken from the prior art, only for the sake of completeness it is pointed out that instead of

4 • 4 • 4 4 4 4444

44 444 · 4 «·· of course, also driven by another adjustable part, such as window panes or vehicle doors,

In an exemplary embodiment, the second reduction gear 5 is mechanically coupled to the shaft 27 of the first reduction gear 4 in the manner disclosed in DE 197 12 185 C1. The second reduction gear 5 is formed in a manner derived from DE 197 12 185 C1 or from e.g. state of the art. Within the scope of the present invention, only the second reduction gear 5 and the rotary output element 31 are provided for gripping the shifting body 32 and for moving the shifting body 32 on a circular arc path. In this case, the second reduction gear 5 is dimensioned such that, when adjusting, for example, the roof plate between two structurally determined end positions, the output element 31 performs a rotation of less than 360 [deg.]. The designer may limit the rotation to, for example, 300 °.

In the exemplary embodiment, the shifting body 32 is formed as a closed ring type and has a first face 33 delimited by an annular surface and a second, flat annulus as well as a delimited second face 34. As shown in FIG. In this case, for example, in the circumferential direction, the south pole S2 may be located next to the north pole N, for example. wherein the south pole S2 is assigned on the opposite face the north pole N2 which is adjacent to the aforementioned south pole S.

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The shift body 32 serves to remotely control a magnetic field sensitive sensor 35 mounted on a printed circuit board 20. As can be clearly seen from Figures 1 and 2, the distance between the magnetic field sensitive sensor 35 and the magnetized gearshift 32 is 32.

0 0 0 0 0 0 000 0 0 «00 several times larger than the dimensions of the magnetic field sensitive sensor housing 35. The magnetic field sensitive sensor 35 is, for example, a Hall sensor and is oriented in such a way that its magnetic field lines extend substantially perpendicular to the printed circuit board 20, generate sensor signals and allow them to be transmitted.

In order to provide a magnetic field away from the shifting body 32 at a large distance from the shifting body 32. When the shifting body 32 occupies the designed shifting position by the designer to produce a sufficiently strong magnetic voltage of the magnetic field sensitive sensor 35, it is between the sensor 35 and the shifting body. 32, respectively, a first conductive magnetic flux body 36 and a second conductive magnetic flux body 37 arranged between the two end faces 33 and 34. The conductive bodies 36 and 37 consist, for example, of wire sections of a magnetically soft material. For example, a square wire may be used. The conductive magnetic flux bodies 36 and 37, for example, have bent ends 38 which are oriented on one side against the magnetic field sensitive sensor 35. and on the other side against the end faces 33, 34 of the shift body 32. Such ends 38 may, for example, abut a magnetic field sensitive sensor 35. and underside the printed circuit board 20 to eliminate disadvantageous long air gap paths. Logically, the ends 38 on the front sides 36 and 37 of the shifting body 32 are designed to be as small as possible in terms of construction. In FIG. 1, the support and fastening means for the first conductive magnetic flux body 36 are shown, for example in the form of terminals 40 shown in FIG. 4. The possibility of embedding the conductive means 36 and 37 in, for example, thermoplastic fastening material to position and position relative to the relatively quiet Magnetic Sensitive Sensor 35 and the gearshift.

9 9 ·· 9

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32. movable between the two conductive magnetic flux bodies 36 and 37 on a circular arc path.

The possibility of directions of relative movement relative to the ends 38 and thus to the conductive bodies 36 and 37 is shown in FIG. 3 by a double arrow 39. Thus, it can be seen that the movement of the pole pair, consisting for example of the north pole N and south pole & This results in a magnetic flux sensor 35, which is arranged at a large distance from the shifter body 32. After the shifter body has been magnetized, at least a change in the magnetic flux in terms of its intensity can be expected. The intensity change also causes a change in the signal available to the control shift device 9. If, as shown in FIG. 3, the second south pole S2 and the second north pole N2 are applied to the conductive bodies 35 according to the double arrow 39, and 36 and sensors 35 two magnetic fluxes with different directions in succession, the sensor 35 sensitive to the magnetic field will even allow the signal to be adjusted to change the polarity of the control shifting device 9.

In addition, it is sufficient to provide a shifting body 32 which can be magnetized only on a portion of its periphery, thereby providing the possibility of arranging a permanent bar-shaped magnet, not shown, in parallel to the shaft 27 on the output element 31. permanent magnet adapted.

Also evident are the various possibilities of converting the described principle of the "sensor 35 sensitive to the magnetic field at a large distance from the magnetized shifting body 32 and the arrangement of the conductive bodies 36, 37" into another structural construction solution.

Claims (3)

PATENT CLAIMS Drive device (2) of a vehicle part adjustable between end positions, in particular a roof plate of a vehicle roof, with an electric motor (3) which is in drive connection with the adjustable part, with a shifting device (9) controlling the electric motor (3) 3) in at least one predetermined position of the adjustable part, with the output element (31) rotatable at least indirectly by an electric motor (3), with a gear shifter (32) which is mounted on the output element (31) and movable therewith a circular arc, and with a magnetic field sensitive sensor (35) associated with the control shifting device (9) for controlling the shifting device (9), the magnetic field sensitive sensor (35) being arranged on the printed circuit board (20). parts of the control shifting device (9), and wherein the printed circuit board (20) is arranged inside the housing (6, 7, 8), that the printed circuit board (20) is arranged at a radial distance from the movement path of the shifting body (32) in the form of a circular arc, the distance being greater than the dimensions of the magnetic field sensitive sensor (35) and 35), a magnetic field sensitive sensor, and at least one magnetic flux conducting body (36, 37) is provided by the shift member (32) when in the engaged position. Drive device according to claim 1, characterized in that the shifting body (32) is designed essentially as a magnetized circular disk arranged concentrically with the output element (31), with the first face (33) and with the second face (34). wherein one of the faces has at least one north pole (N) and the opposite face has one associated south pole (S), and that the magnetic flux conducting body (36, 37) is identically arranged in axial orientation to the faces (33, 34) ) 9 9 9 9 9 9 9 99 99 999 99 9 999 999 «999 98 99 99 «99 99 99 99 Drive device according to claim 1 or 2, characterized in that at least one additional sensor sensitive to the magnetic field on the printed circuit board (20) is arranged at a distance from the shift housing (32) and that an additional sensor (35) is provided. at least one additional magnetic flux conducting body (36, 37) is associated.