DE102014215709A1 - Switch shaft device for a vehicle and vehicle with the switching shaft device - Google Patents

Abstract

Switch shafts are used to implement switching and / or selection commands, which can be triggered, for example, by a driver of a vehicle. The invention has for its object to improve the operating characteristics of a switching shaft device. For this purpose, a switching shaft device 1 for a vehicle with a switching housing section 3, with a groove device 14, wherein the groove means 14, the switching axis S at least partially circumscribes and is connected to the switching shaft 2, with a selector 9 comprising an actuator 12, wherein the actuating member 12 in the groove device 14 engages, wherein the Wählhebelarm 10 is pivotally mounted relative to the switching housing portion 3, wherein the actuator 12 is moved in the axial position during a pivoting movement of the selector lever 10 and the engagement shaft 2 moves in the axial direction via the engagement in the Nuteneinrichtung, with a switching device 6, wherein the switching shaft 2 can be pivoted by the switching device 6 relative to the switching housing section 3 about the switching axis S, wherein the pivoting of the switching shaft 2, the actuator 12 is moved in the groove device 14 in the direction of rotation U, and with a Fed device 20 proposed, wherein the spring device 20 is supported by the Wählhebelarm 10 and the actuator 12 is acted upon by a spring force F, so that the actuator 12 is biased against the at least one groove wall 16 a, b biased.

Description

The invention relates to a switching shaft device for a vehicle having a switching housing section, with a switching shaft, wherein the switching shaft defines a switching axis, with a groove means having at least one groove wall, wherein the groove means at least partially surrounds the switching axis and is connected to the switching shaft, with a selection device, wherein the selection device comprises a selector lever arm with an actuating member, wherein the actuating member engages in the groove means, wherein the Wählhebelarm is pivotally mounted relative to the switch housing portion, wherein upon pivotal movement of the selector lever, the actuator is moved in the axial position and the engagement in the Nuteneinrichtung the switching shaft entrains in the axial direction, and with a switching device, wherein the switching shaft can be pivoted by the switching device relative to the switching housing portion about the switching axis, wherein the Schwenku ng the shift shaft, the actuator is moved in the groove device in the direction of rotation. Furthermore, the invention relates to a vehicle with the switching shaft device.

Switch shafts are used to implement switching and / or selection commands, which can be triggered, for example, by a driver of a vehicle. The selector and / or switching commands are introduced via a mechanism in the switching shaft, which wherein the mechanism converts the switching and / or selection commands in switching and / or Wählbewegungen the shift shaft, the shift shaft is pivoted respectively moved in the axial direction.

The publication DE 10 2007 045 653 A1 , which probably shows the closest prior art, discloses an actuator for a shift shaft with two levers coupled to each other, wherein a selector lever is coupled to a transmission device for axial displacement of the shift shaft and wherein a shift lever for the radial rotation of the shift shaft is rotatably connected thereto. The transmission device has a control arranged on the shift lever guide for a roller, which is arranged at a free end of a straight or cranked portion of the pivotally mounted selector lever. In a switching movement, the roller runs in the direction of rotation about the switching shaft in the guide.

The invention has for its object to improve the operating characteristics of a switching shaft device. This object is achieved by a switching shaft device having the features of claim 1 and by a vehicle with the switching shaft device having the features of claim 10. Preferred or advantageous embodiments of the invention will become apparent from the dependent claims, the following description and the accompanying drawings.

In the context of the invention, a switching shaft device is proposed, which is designed for a vehicle. In particular, the switching shaft device is used to implement switching and / or selection commands, which are initiated by a driver of the vehicle or by an actuator to implement in a switching and / or selection movement for a downstream transmission, in particular manually operated transmission of the vehicle.

The switching shaft device comprises a switching housing section, which in particular limits a switching space. The switch housing section may e.g. Alternatively, the switch housing section forms part of a switching dome, in particular a cover, which carries further functional components.

The switching shaft device comprises a switching shaft, wherein the switching shaft defines a switching axis with its longitudinal axis or longitudinal extent. The switching shaft is pivotable relative to the switching housing portion in the circumferential direction about its switching axis and slidably disposed in the axial direction to its switching axis. Particularly preferably, the switching shaft passes through the switching housing section, so that a part of the switching shaft is arranged in the switching room and another part of the switching shaft is arranged outside of the switching room. The switching shaft may wear switching elements, such as shift finger, Rastierhülsen, etc. and / or be connected to these. Particularly preferably, the shift shaft is received in the switch housing portion lubricant-tight, so that lubricant from the switch room can not escape through the switch housing section.

The switching shaft device has a groove device which runs in the direction of rotation about the switching axis at least in sections. For example, the groove device extends over an angular range in the direction of rotation between 20 degrees and 45 degrees. The groove device is open in relation to the shift axis in a radially outward direction. The groove device has at least one groove wall, preferably two groove walls, wherein the groove wall extends in a radial plane to the switching axis or is aligned at least rectified to this. The groove device, in particular the at least one groove wall, is in particular rotationally fixed and / or non-displaceably connected to the switching shaft. In particular, the groove device is carried along with the movements of the switching shaft.

The switching shaft device comprises a selection device, via which a selection command can be introduced into the switching shaft device and, in particular, converted into a selection movement of the switching shaft. The selector has a selector lever with an actuator. The actuating member is arranged in the groove device and can be moved in the axial direction via a pivoting movement of the selector lever arm. Due to the axial movement of the actuator and the positioning of the actuator in the groove means the groove means is taken with the actuator in the axial position. After the groove device is connected to the switching shaft, and the shift shaft is taken in an axial process of the actuator of this and offset in the axial direction. Thus, the shift shaft can be displaced by the selector relative to the shift housing portion in the axial direction to the shift axis. The selector lever arm is pivotally mounted relative to the shift housing portion. Particularly preferably, the Wählhebelarm is pivotally mounted or mounted on the switch housing portion. In particular, the selector lever arm is understood to mean an area which extends from the actuating member to the pivotable mounting or is restricted to this area.

Further, the switching shaft device has a switching device, wherein the switching shaft can be pivoted by the switching device relative to the switching housing portion about the switching axis. For example, the switching device, in particular a shift lever of the switching device, rotatably connected to the shift shaft. During the pivoting of the switching shaft about the switching axis, the actuator is moved in the groove means relative to this in the direction of rotation about the switching axis. In particular, the groove device extends in the circumferential direction at least by the pivoting angle of the switching shaft introduced by the switching device.

In the context of the invention it is proposed that the switching shaft device comprises a spring device, wherein the spring device is supported by the selector lever. The spring device acts on the actuating member with a spring force, so that the actuating member is biased against the at least one groove wall. In particular, the actuating member is acted upon by the spring force in such a way that the actuating member always bears against the at least one groove wall in a gap-free and / or contacting manner.

It is an idea of the invention that the switching shaft device and in particular the actuator can wear during prolonged use by abrasion. Such wear can lead to a gap between the actuator and the groove device results in the axial direction, so that the selection command is introduced via a certain play in the groove means and thus in the switching shaft. Thus, in a preferred embodiment of the invention, after the dialing command is initiated manually by a driver and thus can receive haptic feedback from the switching shaft device, play in the switching shaft device can result in inaccuracies in initiating the dialing command. With the bias by the spring device, however, a zero clearance is permanently, in particular over the life of the switching shaft device achieved, so that even after prolonged use of the switching shaft device, the shift quality remains high and the operating characteristics of the switching shaft device over the prior art are improved. Furthermore, by the spring means and the bias to the actuator and manufacturing tolerances in the manufacture of the switching shaft device can be compensated in the same way and in this way the operating characteristics of the switching shaft device can be further improved.

In a preferred embodiment of the invention, the groove device has two groove walls, wherein the actuating member is arranged between the two groove walls and biased against the two groove walls. In this embodiment of the invention is thus achieved that a backlash-free system is implemented in both axial directions with respect to the switching axis. After a dialing movement, e.g. can be done in both axial directions in known H-circuits, this development ensures a tolerance-free operation in the two axial directions.

In a first possible alternative of the invention, the spring device acts on the actuating member in a radial direction to the switching axis with the spring force. In this case, the actuating member is pressed in the radial direction in the groove means, wherein the actuating member rests against at least one groove wall, preferably on both groove walls. This embodiment has the particular advantage that in the event that an initial portion of the actuator was reduced by abrasion or wear in an extension in the axial direction to the main axis, the actuator can be nachgeschoben in the radial direction to continue to achieve freedom from play.

In a possible structural embodiment of the invention, the actuating member is formed as a roller, wherein the roller has a conical, in particular conical, extending about a rotational axis of the roller bearing portion. In an initial installation, the role is with a in the radial direction to the indexing axis directed towards the initial section on the at least one groove wall or on both groove walls. Should this initial section wear out over time in such a way that its diameter becomes smaller, then the spring device presses a successor section of the contact section into the groove device, so that the backlash is restored and thereby ensured throughout. In particular, the abutment section has a first diameter in the area of the anvil section and a second diameter in the area of the successor section, the second diameter being larger than the first diameter. The roller is oriented so that it protrudes with the beginning portion and / or the first diameter first in the groove means.

In an alternative embodiment of the invention, the actuating member is designed as a slider, which has a wedge-shaped contact portion. While the roller can both slide and roll, it is provided in a slider that this is not formed as a rotary body and can only slide in a process in the direction of rotation. In one possible implementation of the invention, the slider is provided with a wedge-shaped abutment portion, which is inserted with the narrow end first in the groove means, so that in an abrasion or wear, the slider can be tracked in the radial direction.

Alternatively or additionally, at least one groove wall may have a conical, in particular conical, counter-contact section extending around the switching axis. Thus, the groove wall forms a funnel for the actuator, which is also achieved by the funnel shape, that in case of wear of the actuator this can be nachgeschoben by the spring means.

In an alternative embodiment of the invention, the actuating member comprises at least one Gleitkörperabschnitt, wherein the Gleitkörperabschnitt is acted upon in an axial direction to the shift axis with the spring force. The sliding body portion is not formed rotationally symmetrical with respect to a radial direction to the switching axis, so that in a method in the circumferential direction in the groove means it can only slide, but not roll. The spring device acts in the axial direction, so that the Gleitkörperabschnitt is pressed against the groove wall and thus can reach the backlash.

In a preferred development of the invention, the actuating member has two Gleitkörperabschnitte, wherein the two Gleitkörperabschnitte are biased by the spring means in the axial direction to the shift axis and are pushed away from each other. Thus, a Gleitkörperabschnitt located on one of the groove walls and the other Gleitkörperabschnitt on the other of the groove walls, which is ensured by the spring means that the two-sided system is always free of play. The spring device can be supported against the Wählhebelarm. Alternatively, it is also possible for the sliding bodies to support one another and for the selector lever arm to have only guides for the sliding bodies and to carry the spring device indirectly over the sliding body sections.

In a preferred structural realization of the invention, one of the groove walls is formed by a lever portion of the switching device. The lever portion is rotatably connected to the shift shaft and fixedly connected. In this embodiment, it is achieved that the number of components of the switching shaft device is kept low. Alternatively or additionally, one of the groove walls is formed by a collar of a sleeve, wherein the sleeve with the switching shaft rotatably and / or non-displaceably connected.

Another object of the invention relates to a vehicle with the switching shaft device according to one of the preceding claims or as previously described. The switching shaft device is connected to the one with the manual transmission. On the other hand, the switching shaft device with a manual switching mechanism or actuator for controlling the switching shaft device, in particular for transmitting the switching and / or selection commands coupled. The connection between the manual switching mechanism and the actuator can be done for example via a shift linkage or shift cables. The vehicle is designed in particular as a motor vehicle, such as a passenger car, a bus, etc.

Further features, advantages and effects of the invention will become apparent from the following description of preferred embodiments of the invention and the accompanying figures. Showing:

1 a schematic, axial plan view of a three-dimensional representation of a switching shaft device for a vehicle as a first embodiment of the invention;

2 a schematic longitudinal section through the switching shaft device in the 1 along the section line AA and an enlarged detail in the region of the actuator;

3 an alternative embodiment of the actuator of the switching shaft device of the preceding figures shown in a sectional view along the section line BB in the 2 ,

The 1 shows in a schematic, three-dimensional axial plan view from above a switching shaft device 1 as a first embodiment of the invention. The switching shaft device 1 is configured, switching and / or selection commands, which are generated by a driver, via a switching shaft 2 to implement in switching and Wählbewegungen for a subsequent manual transmission.

The switching shaft device 1 includes the switching shaft 2 which in the 2 is shown in a longitudinal section. The shift shaft 2 is formed as a rod-shaped component, wherein on the switching shaft 2 not shown shift finger, Rastierhülsen or similar functional components can be placed. The shift shaft 2 passes through a switch housing section 3 , which is placed on a switch housing, not shown, and a control room 4 ( 2 ) seals against an environment. The shift shaft 2 defined with its longitudinal extent a switching axis S corresponds.

The shift shaft 2 is in the switch housing section 3 via a storage facility 5 ( 2 ) in the direction of rotation U pivotally and also arranged axially displaceable with respect to the switching axis S.

To initiate a pivoting movement, the switching shaft device 1 a switching device 6 on which a shifter 7 includes, the rotationally fixed and non-slip with the shift shaft 2 is coupled. In the 1 the shift lever is shown in triplicate to indicate three different shift positions, namely a 3rd gear, a neutral position and a fourth gear. The shifter 7 is as a cranked rocker 7 educated. At a free end of the shift lever 7 is a first mechanical interface 8th arranged, which is designed as a bolt for connecting a shift linkage.

Furthermore, the switching shaft device 1 a dialer 9 on, with the dialing device 9 a selector lever 10 includes, which in this embodiment with its free end 11 on the switch housing section 3 is arranged pivotally. Furthermore, the selection device 9 an actuator 12 on which on a bolt 13 sits and in a groove device 14 the switching shaft device 1 intervenes.

The dialer 9 has a second mechanical interface 15 on, the same as the first mechanical interface 8th is trained. When initiating a selection movement in the selector 9 becomes the selector lever 10 around the free end 11 pivoted, the actuator 12 is moved in the axial direction to the shift axis S and thereby the shift shaft 2 in the axial direction entrains.

In the 2 is the switching shaft device 1 in a schematic longitudinal section along the section line AA, wherein it can be seen that the groove device 14 two groove walls 16a . 16b which has a groove 17 limit in the axial direction. The lower groove wall 16b gets through the shifter 7 educated. The upper groove wall 16a in contrast, by a collar of a sleeve 18 educated. The sleeve 18 has a cylindrical portion in which the switching shaft 2 is introduced and which rotatably with the shift shaft 2 connected is. The shifter 7 in turn sits on the sleeve 18 and is also connected to this rotatably. In a pivoting movement in the direction of rotation U thus the shift lever 7 , so that the sleeve 18 and the shift shaft 2 , pivoted as rigidly connected assembly in the direction of rotation U.

The actuator 12 is in the groove 17 arranged and moves at a pivot in the direction of rotation U in the groove 17 , The actuator 12 is in the 1 and 2 formed as a roll, which on the bolt 13 arranged and optionally rotatably supported. The actuator 12 lies in the longitudinal section shown on both sides of the groove walls 16a , b on.

The actuator 12 has a cone-shaped abutment section 19 on, with the actuator 12 at the groove walls 16a , b at a counterpart section 22 especially in each case in a linear manner. The actuator is with the end with the smaller cone diameter ahead in the groove 17 introduced. The cone angle as the opening angle is less than 10 degrees, preferably less than 5 degrees.

In addition, the switching shaft device 1 a spring device 20 on which the actuator 12 in the radial direction R to the switching axis S in the direction of the switching shaft 2 biases. The spring device 20 is formed in this embodiment as a coil spring, which is coaxial with the bolt 13 arranged and in a radially inwardly open annular gap of the actuating body 12 received and in the radial direction R to the actuator body 12 is supported. This results in a spring force F, which corresponds to the longitudinal extension of the bolt 13 is rectified. By the spring force F is the actuator 12 biased in the radial direction R to the switching axis S. Through the cone-shaped contact section 19 is achieved by the bias of the actuator 12 always biased on both groove walls 16a , b is present. By the bias by means of the spring device 20 is thus ensured that the actuator 12 gap-free and / or free of play in both axial directions to the switching axis S at the groove walls 16a , b is present. This ensures that the dialing process can always be implemented without play and thus comfortable.

In the event that the actuator 12 wears out, is through the spring device 20 implemented that the actuator 12 in the radial direction R to the switching axis S in the direction of the switching shaft 2 is pushed until the plant section 19 again at both groove walls 16a , b is present. This is despite a possible wear of the actuator 12 ensures that a backlash-free dialing operation is always possible.

While the actuator 12 in the 1 and 2 is formed as a rotational body is in the 3 an alternative embodiment of the actuator 12 shown: The 3 shows the alternative embodiment of the actuator 12 in a sectional plane through the actuator 12 along the section line BB like this in the 2 is drawn. The actuator 12 has two sliding body sections 21a , B on, which may be formed, for example, as spherical caps. Between the sliding body sections 21a , b is a second embodiment of the spring device 20 arranged, which the Gleitkörperabschnitte 21a , B pushes apart in the axial direction, so that they play again at the groove walls 16a , b. The second spring device 20 is formed as a spiral spring, which with the free ends of the Gleitkörperabschnitten 21a , b supports.

In the embodiments in the 1 and 2 respectively 3 becomes the spring device 20 through the selector lever arm 7 carried. In the embodiment in the 1 and 2 the spring device is supported 20 directly on the selector lever 7 from. In the embodiment in the 3 becomes the spring device 20 over the bolt 13 indirectly from the selector lever 7 carried.

LIST OF REFERENCE NUMBERS

1

 Shift shaft device

2

 shift shaft

3

 Switch housing section

4

 control room

5

 Storage facility

6

 switching device

7

 gear lever

8th

 first mechanical interface

9

 dialer

10

 Wählhebelarm

11

 free end

12

 actuator

13

 bolt

14

 groove means

15

 second mechanical interface

16a, b

 groove walls

17

 groove

18

 shell

19

 cone-shaped contact section

20

 spring means

21a, b

 Gleitkörperabschnitte

22

 Counter-contact section

F

 spring force

R

 radial direction

A

 axial direction

S

 switching axis

U

 direction of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102007045653 A1 [0003]

Claims (10)

Switch shaft device ( 1 ) for a vehicle with a switch housing section ( 3 ), with a switching shaft ( 2 ), wherein the shift shaft ( 2 ) defines a switching axis (S), with a groove device ( 14 ) with at least one groove wall ( 16a , b), wherein the groove device ( 14 ) the switching axis (S) at least partially circumscribes and with the switching shaft ( 2 ), with a selector ( 9 ), the dialing device ( 9 ) a selector lever arm ( 10 ) with an actuator ( 12 ), wherein the actuating member ( 12 ) in the groove device ( 14 ), wherein the selector lever arm ( 10 ) relative to the switch housing section ( 3 ) is pivotally mounted, wherein during a pivoting movement of the selector lever ( 10 ) the actuator ( 12 ) is moved in the axial position and via the engagement in the Nuteneinrichtung ( 14 ) the shift shaft ( 2 ) in the axial direction, with a switching device ( 6 ), wherein the shift shaft ( 2 ) by the switching device ( 6 ) relative to the switch housing section ( 3 ) can be pivoted about the switching axis (S), wherein during the pivoting of the switching shaft ( 2 ) the actuator ( 12 ) in the groove device ( 14 ) is moved in the direction of rotation (U), characterized by a spring device ( 20 ), wherein the spring device ( 20 ) from the selector lever arm ( 10 ) and the actuator ( 12 ) acted upon by a spring force (F), so that the actuating member ( 12 ) on the at least one groove wall ( 16a , b) is biased. Switch shaft device ( 1 ) according to claim 1, characterized in that the groove means ( 20 ) two groove walls ( 16a , b), wherein the actuating member ( 12 ) on both groove walls ( 16a , b) is biased. Switch shaft device ( 1 ) according to claim 1 or 2, characterized in that the spring device ( 20 ) The actuator in a radial direction (R) to the switching axis (S) with the spring force (F) acted upon. Switch shaft device ( 1 ) according to claim 3, characterized in that the actuating member ( 12 ) is formed as a roller, wherein the roller is a conical, in particular conical bearing portion ( 19 ) for contact with the at least one groove wall ( 16a , b), wherein the abutment section ( 19 ) runs around a rotation axis of the roller. Switch shaft device ( 1 ) according to claim 3, characterized in that the actuating member ( 12 ) is formed as a slider, wherein the slider is a wedge-shaped abutment portion for abutment with the at least one groove wall ( 16a , b). Switch shaft device ( 1 ) according to one of claims 3 to 5, characterized in that at least one of the groove walls ( 16a , b) a conical, in particular conical counter-contact section () running around the indexing axis (S) ( 22 ) having. Switch shaft device ( 1 ) according to one of claims 1 or 2, characterized in that the actuating member ( 12 ) at least one sliding body section ( 21a , b), wherein the sliding body section ( 21a , b) in an axial direction (A) to the switching axis (S) with the spring force (F) is acted upon. Switch shaft device ( 1 ) according to claim 7, characterized in that the actuating member ( 12 ) two sliding body sections ( 21a , b), wherein the two sliding body sections ( 21a , b) by the spring device ( 20 ) in the axial direction (A) are mutually biased biased to the switching axis (S). Switch shaft device ( 1 ) according to one of the preceding claims, characterized in that one of the groove walls ( 16a , b) by a lever portion of the switching device ( 6 ) is formed and / or that one of the groove walls ( 16a , b) through a sleeve ( 18 ) is formed, wherein the sleeve ( 18 ) with the switching shaft ( 2 ) connected is. Vehicle with a switching shaft device ( 1 ) according to any one of the preceding claims.

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