DE102019219064A1 - Rotary switch for selecting several operating modes in an automatic transmission - Google Patents

Abstract

A rotary switch with a rotatably mounted rotary knob (1) is used to select several operating modes (P, R, N, D, S / M) in an automatic transmission of a vehicle, whereby the respective operating mode (P, R, N, D, S / M) is assigned to an angle of rotation of the rotary knob (1), so that a predetermined operating mode (P, R, N, D, S / M) can be set by a corresponding rotary movement of the rotary knob (1) and the rotary movement of the rotary knob (1) It is proposed that it can be temporarily locked in predetermined operating modes (P, N), a first electromagnetic actuating device (2) for temporarily locking a neutral operating mode (N) when the first actuating device (2) is energized and for temporarily locking a parking lock operating mode (P ) is provided in the de-energized state of the first actuating device (2) and that a second electromagnetic actuating device (3) for automatic return to the parking lock operating mode (P) independently ängig of the angle of rotation position of the rotary knob (1) is provided. A vehicle with a rotary switch is also proposed.

Description

The present invention relates to a rotary switch with a rotatably mounted rotary knob for selecting several operating modes in an automatic transmission of a vehicle according to the preamble of the claim 1 The type defined in more detail. The invention also relates to a vehicle with the rotary switch.

Rotary switches of this type are generally known from vehicle technology and are used for switching actuation for automatic transmissions which select a predetermined gear stage or a predetermined operating mode via a rotary movement of the rotary knob. The individual operating modes are usually visualized for the driver via a display element. In a parking lock operating mode and a neutral operating mode, locking functions are provided, as a result of which the rotary knob is locked in place until the driver takes, for example, predetermined actions. An automatic return to the parking lock operating mode is also provided if, for example, the driver leaves the vehicle. The problem arises here of adjusting the rotary switch accordingly in order to implement this automatic reset in the switching logic. For example, this can be implemented using a corresponding rotary motor.

However, electric motors increase manufacturing costs and operating costs due to the need for electricity. Furthermore, the costs are increased by the continuous energization for realizing the blocking function, which increases the energy requirement in a disadvantageous manner.

The present invention is based on the object of proposing a rotary switch for selecting several operating modes and a vehicle with the rotary switch of the type described at the outset, which implement the most cost-effective and safe mode of operation.

According to the invention, this object is achieved by the features of patent claim 1 or 13, with advantageous and claimed developments resulting from the subclaims and the description as well as the drawings.

Thus, a rotary switch with a rotatably mounted rotary knob or the like is proposed for selecting several operating modes, gear steps or the like in an automatic transmission of a vehicle, the respective operating mode being assigned to a rotation angle of the rotary knob so that a predetermined operating mode can be set by a corresponding rotary movement of the rotary knob and wherein the rotary movement of the rotary knob can be temporarily locked in predetermined operating modes. A particularly inexpensive and safe mode of operation is implemented in the proposed rotary switch in that a first electromagnetic actuating device or the like is provided for temporarily locking a neutral operating mode when the first actuating device is energized and for temporarily locking a parking lock operating mode when the first actuating device is de-energized and that a second electromagnetic actuating device is provided for automatic return to the parking lock operating mode independently of the rotary angle position of the rotary knob.

In this way, with the proposed rotary switch, both the possible temporary locking of certain operating modes and also an automatic reset to the parking lock operating mode are implemented in an energetically favorable and safe manner. Since the neutral operating mode is generally only temporarily locked, locking is implemented in the rotary switch according to the invention when the actuating device is energized. When the parking lock operating mode is locked, for energy reasons, but also for safety reasons, locking in the de-energized state of the actuating device is implemented. The automatic return to the parking lock operating mode is implemented via the second actuating device. As a result, both the locking function and the automatic return to the initial state or to the parking lock operating mode are advantageously implemented with only two actuating devices.

In the context of a preferred structural embodiment of the present invention it is provided that the rotary knob is guided with a guide element or the like along a ring segment recess of a disk element representing the operating modes for limiting the angle of rotation of the rotary knob. This represents an advantageously simple structural design in the proposed rotary switch. With the guide element, which can be designed as a finger-shaped component protruding from the rotary knob, the rotary movement of the rotary knob is implemented along the ring segment recess, the ring segment recess limiting the angle of rotation for the rotary movement of the rotary knob represents. The operating modes are shown along the ring segment recess. It is also conceivable that other structural forms for converting the rotary movement of the rotary knob to set the operating modes are selected, in which a rotation angle limitation for the rotary switch is ensured.

In order to implement the locking functions easily and safely in predetermined operating modes, the present invention provides that the disk element is assigned a first locking pawl for temporarily locking the neutral operating mode and a second locking pawl for temporarily locking the parking lock operating mode, the first locking pawl and the second pawl can be actuated via the first electromagnetic actuating device. The pawls provided are preferably arranged in the area of the ring segment recess on the disk element, the pawls each being pivotably mounted and their pawl sections being able to be brought into operative connection with the guide element or with the finger-shaped component of the rotary knob in such a way that the rotary movement of the rotary knob is locked or blocked becomes. For this purpose, the latch sections can have a suitable structural shape that enables the locking function.

The pawls provided can, for example, be spring-loaded or the like in order to keep the pawls in a predetermined state in order to implement the above-described energetically cost-effective and safe mode of operation of the proposed rotary switch.

In order to ensure the actuation of the pawls via the first electromagnetic actuating device at all times, a corresponding transmission of movement between the actuating device and the pawls is necessary.

In the context of an advantageous embodiment variant of the invention, the movement or actuation transmission between the pawls and the first actuating device can be realized in that the first pawl and the second pawl are in operative connection with a guide ramp track or the like running around a hollow cylinder, the hollow cylinder and thus the guide ramp track are also arranged coaxially to the disc element and to the rotary knob. The coaxial arrangement ensures that the guide track is assigned to the pawls even when the rotary knob is rotated. The guide ramp track or the like can preferably run radially on the outside on the circumferential area of the hollow cylinder. Other positions of the guideway are also conceivable, which ensure reliable transmission for actuating the pawls regardless of the rotational movement.

In order to enable actuation of the pawls to implement the locking function independently of the angle of rotation position as easily as possible, it can be provided within the scope of the present invention that the first electromagnetic actuating device can axially adjust the guide ramp path by axially moving the hollow cylinder to actuate the first and second Pawl realized.

The automatic reset to the parking lock operating mode provided in the proposed rotary switch, for example when the driver leaves the vehicle or other conditions exist and thus require a reset, is provided in the context of a next development that the disc element, which is rotatably mounted independently of the rotary knob, has a Return spring or the like is connected to the rotary knob, so that a rotational restoring force acting on the disk element is provided in the parking lock operating mode by adjusting the angle of rotation of the rotary knob. The resiliently generated restoring force, for example, ensures automatic restoring even in the event of a power failure. Other possibilities for generating a corresponding restoring force can also be used, which enable a restoration independent of the energy supply.

In order to temporarily arrange the disk element in a rotationally fixed manner, a corresponding braking or holding device is required, which can be unlocked or opened if necessary in order to enable the disk element to be reset.

A further development of the invention provides that the disk element is arranged in a rotationally fixed manner via a switching claw or the like. The switching claw forms the braking or holding device and can be actuated via the second electromagnetic actuating device to reset the rotation of the disc element.

Another aspect of the present invention provides that a vehicle with the rotary switch described above is also claimed, so that the advantages described above and other advantages result.

The present invention is further explained below with reference to the drawings.

• 1 eine quergeschnittene Ansicht durch einen Drehknopf eines erfindungsgemäßen Drehschalters;
• 2 eine geschnittene Ansicht entlang der Schnittlinie A-A gemäß 1 des erfindungsgemäßen Drehschalters, und
• 3 eine schematische dreidimensionale Teilansicht eines Scheibenelements mit einem Hohlzylinder mit einer Führungsrampenbahn des erfindungsgemäßen Drehschalters.

Show it:

• 1 a cross-sectional view through a rotary knob of a rotary switch according to the invention;
• 2 a sectional view along the section line AA according to 1 of the rotary switch according to the invention, and
• 3rd a schematic three-dimensional partial view of a disk element with a hollow cylinder with a guide ramp track of the rotary switch according to the invention.

In the 1 and 2 are different views of a rotary switch according to the invention with a rotatably mounted rotary knob 1 to select several operating modes P. , R. , N , D. , S / M shown as an example for an automatic transmission of a vehicle. The operating modes are, for example, a parking lock operating mode P. , a reverse gear operating mode R. , a neutral operating mode N , a continuous driving operating mode D. as well as a sport or manual drive operating mode S / M one angle of rotation range of the rotary knob 1 assigned, the parking lock operating mode P. and the sport or manual drive operating mode S / M each form the end regions of the angle of rotation. Thus is a predetermined mode of operation P. , R. , N , D. , S / M by turning the rotary knob accordingly 1 adjustable. The turning movement of the rotary knob 1 is in the parking lock operating mode P. and in the neutral operating mode N temporarily lockable.

In order to achieve the most cost-effective and safe mode of operation with the rotary switch according to the invention, it is provided that a first electromagnetic actuating device 2 for temporarily locking the neutral operating mode N in the energized state of the first actuating device 2 and for temporarily locking the parking lock operating mode P. in the de-energized state of the first actuating device 2 is provided and that a second electromagnetic actuator 3rd for automatic return to the parking lock operating mode P. regardless of the angle of rotation of the rotary knob 1 is provided.

Like in particular from 1 can be seen is the rotary knob 1 with a guide element 4th quasi as a guide finger along one of the operating modes P. , R. , N , D. , S / M representing ring segment recess 5 of a disc element 6th for limiting the angle of rotation of the rotary knob 1 guided. The operating modes P. , R. , N , D. , S / M are in 1 the ring segment recess 5 of the disc element 6th assigned by way of example. Accordingly, one end of the ring segment recess forms 5 the parking lock operating mode P. and the other end of the ring segment recess 5 the sport or manual drive operating mode S / M .

The disk element is used to implement the locking functions 6th a first pawl 7th for temporarily locking the neutral operating mode N and a second pawl 8th for temporarily locking the parking lock operating mode P. assigned, the first pawl 7th and the second pawl 8th via the first electromagnetic actuator 2 are operable.

The pawls 7th , 8th are like in particular from 1 can be seen, each pivotable about an axis on the disk element 6th mounted so that the pawl portion of each pawl 7th , 8th the ring segment recess 5 in the area of the operating mode to be blocked P. , N are stored. At the first pawl 7th a fork-shaped pawl section is provided by way of example, since it is used to lock the neutral operating mode N both directions of rotation of the rotary knob 1 must be blocked. At the second pawl 8th a hook-shaped pawl section is provided, since it is used to lock the parking lock operating mode P. only one direction of rotation of the rotary knob 1 must be blocked because the parking lock operating mode P. at one of the ends of the ring segment recess 5 is located.

Furthermore, with the first pawl 7th one in the plane of the drawing 1 horizontal pivot axis selected, while the second pawl 8th for example, a pivot axis selected perpendicular to the plane of the drawing is provided. Both pawls 7th , 8th are spring loaded, with the first pawl 7th is spring-loaded in such a way that in a de-energized state of the first electromagnetic actuating device 2 the neutral operating mode N is released while the second pawl 8th is spring-loaded in such a way that in a de-energized state of the first electromagnetic actuating device 2 the parking lock operating mode P. is locked.

Like in particular from 3rd It becomes clear that the first pawl is in place 7th and the second pawl 8th with a circumferential guide ramp 9 of a hollow cylinder 13th in operative connection. The hollow cylinder 13th is coaxial with the disc element 6th and to the knob 1 arranged with the guide ramp track 9 radially outside on the circumferential area of the hollow cylinder 13th runs. 3rd shows an example of a detailed view of the guide ramp track 9 on the hollow cylinder 13th , with other actuation transmissions for actuating the pawls 7th , 8th by the first actuator 2 possible are.

In this exemplary embodiment according to 3rd becomes the guide ramp 9 quasi through a thread on the hollow cylinder 13th executed. As every pawl 7th , 8th in operative connection with the guide ramp track 9 is, an actuation of the pawls is dependent on the angle of rotation position 7th , 8th enables. By the first electromagnetic actuator 2 is an axial adjustment of the hollow cylinder 13th and thus also the guide ramp 9 to operate the first pawl 7th and the second pawl 8th enables. This axial movement of the hollow cylinder 13th is indicated by a double arrow in 3rd made clear.

Like in particular from 1 can be seen is the rotary knob 1 with the guide element 4th regardless of the rotational movement of the disc element 6th rotatably mounted so that the guide element 4th the corresponding operating mode P. , R. , N , D. , S / M in the ring segment recess 5 of the disc element 6th can reach. For the automatic return to the parking lock operating mode P. it is provided in the proposed rotary switch that this is independent of the rotary knob 1 rotatably mounted disc element 6th via a return spring 10 with the rotary knob 1 is coupled, so that by adjusting the angle of rotation of the rotary knob 1 to select an operating mode, click on the pane element 6th effective rotational restoring force in the parking lock operating mode P. builds up. The return spring 10 can for example be designed as a tension or compression spring. It is also conceivable that a clock spring or the like is used, which has the advantage that it generates the same torque over the entire rotational angle range.

The disc element 6th is via a switching claw 11 temporarily non-rotatably arranged. For example, the shift pawl 11 be designed as an axial claw clutch or brake, which via the second electromagnetic actuating device 3rd to reset the rotation of the disc element 6th is operated. In the energized state of the second electromagnetic actuating device 3rd becomes the switching claw 11 opened to realize the automatic reset.

To the individual operating modes P. , R. , N , D. , S / M to be able to detect is a sensor 12th the angle of rotation of the rotary knob 1 assigned, which forwards the corresponding signals to a central controller. Furthermore, the individual operating modes P. , R. , N , D. , S / M be separated from each other by a detent not shown for the driver perceptible.

List of reference symbols

1

Knob

2

first electromagnetic actuator

3

second electromagnetic actuator

4th

Guide element

5

Ring segment recess

6th

Disc element

7th

first pawl

8th

second pawl

9

Guide ramp

10

Return spring

11

Shift claw

12th

sensor

13th

Hollow cylinder

P.

Parking lock operating mode

R.

Reverse gear operating mode

N

Neutral operating mode

D.

Continuous driving mode

S / M

Sport or manual drive operating mode

Claims (13)

Rotary switch with a rotatably mounted rotary knob (1) for selecting several operating modes (P, R, N, D, S / M) in an automatic transmission of a vehicle, with the respective operating mode (P, R, N, D, S / M) an angle of rotation of the rotary knob (1) is assigned, so that a predetermined operating mode (P, R, N, D, S / M) can be set by a corresponding rotary movement of the rotary knob (1) and the rotary movement of the rotary knob (1) in predetermined operating modes (P, N) is temporarily lockable, characterized in that a first electromagnetic actuating device (2) for temporarily locking a neutral operating mode (N) when the first actuating device (2) is energized and for temporarily locking a parking lock operating mode (P) in the de-energized state of the first actuating device (2) is provided and that a second electromagnetic actuating device (3) for automatic return to the parking lock operating mode (P) is independent gig is provided by the angle of rotation position of the rotary knob (1). Rotary switch after Claim 1 , characterized in that the rotary knob (1) is guided with a guide element (4) along a ring segment recess (5) of a disk element (6) representing the operating modes (P, R, N, D, S / M) to limit the angle of rotation. Rotary switch after Claim 2 , characterized in that the disk element (6) is assigned a first pawl (7) for temporarily locking the neutral operating mode (N) and a second pawl (8) for temporarily locking the parking lock operating mode (P), the first pawl (7) and the second pawl (8) can be actuated via the first electromagnetic actuating device (2). Rotary switch after Claim 3 , characterized in that the first pawl (7) is spring-loaded in such a way that the neutral operating mode N is released in a de-energized state of the first electromagnetic actuating device (2). Rotary switch after Claim 3 or 4th , characterized in that the second pawl (8) is spring-loaded in such a way that the parking lock operating mode P is locked in a de-energized state of the first electromagnetic actuating device (2). Rotary switch according to one of the Claims 3 to 5 , characterized in that the first pawl (7) and the second pawl (8) are in operative connection with a circumferential guide ramp track (9) on a hollow cylinder (13), the hollow cylinder (13) being coaxial with the disk element (6) and the rotary knob (1) is arranged. Rotary switch after Claim 6 , characterized in that the guide ramp track (9) runs radially on the outside on the circumferential area of the disc element (6) and the rotary switch. Rotary switch after Claim 6 or 7th , characterized in that the first electromagnetic actuating device (2) provides an axial adjustment of the hollow cylinder (13) for actuating the first pawl (7) and the second pawl (8) via the guide ramp track (9). Rotary switch according to one of the Claims 2 to 8th , characterized in that the disc element (6), which is rotatably mounted independently of the rotary knob (1), is coupled to the rotary knob (1) via a return spring (10), so that, by adjusting the angle of rotation of the rotary knob (1), an on the disk element (6) acting rotational restoring force for restoring the parking lock operating mode (P) is provided. Rotary switch according to one of the Claims 2 to 9 , characterized in that the disc element (6) is temporarily non-rotatably arranged via a switching claw (11). Rotary switch after Claim 10 , characterized in that the switching claw (11) can be actuated via the second electromagnetic actuating device (3) to reset the rotation of the disc element (6). Rotary switch after Claim 10 or 11 , characterized in that the switching claw (11) is open when the second electromagnetic actuating device (3) is energized. Vehicle with a rotary switch according to one of the preceding claims.

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