DE102007021485A1 - Lever with switching unit for transmission of shift or selection movement on selector shaft, has pivoting section, on which pivoting element is arranged, and pin that is fixed in operating section by joining process - Google Patents

Abstract

The lever (1) has a pivoting section (3), on which a pivoting element is arranged for pivoted bearing of the lever around a pivoted axis (10). A handling section (5) is provided, on which handling units are arranged for transmission of the shift or selection movements. A pin is fixed in an operating section (7) by a joining process.

Description

Field of the invention

The The invention relates to a lever for transmitting switching and / or Wählbewegungen on a switching shaft with a Pivoting portion, on which a pivoting member for pivotal mounting of the lever about a pivot axis on or arranged in a switching unit is, with an operating section on which operating means for transmission the switching and / or Wählbewegungen arranged on the lever are, and with an actuating portion, which is an actuating means for transmitting the switching and / or selection movements has on the shift shaft, so that the shift shaft in the axial Direction is shifted, the actuating means as a bolt is formed with an attached sliding portion and a switching unit with this lever.

Background of the invention

such Levers are commonly used in switching units, to a switching and / or selection movement, for example, from a manual shift lever actuated by a driver, to transfer to a switching shaft, which the switching and / or Selective movements in the appropriate switching or Implementing dialing. Usually For this purpose on the shift shaft shift finger, shift forks, Rastierhülsen or the like arranged rotationally and non-displaceably.

The publication DE 101 11 911 A1 , which probably forms the closest prior art, relates to an operating unit for a manual transmission, which has a mechanism to move a switching shaft for the implementation of Wählbewegungen in the axial direction and to implement the implementation of switching movements about its axial extent. For the transmission of Wählbewegungen a pivotable lever is provided, which - if one considers, for example, the embodiment in 7 - Is pivotally mounted about a pivot axis and is formed as a base plate with two lever arms. The one lever arm has at its outer end to a ball head, which is formed and / or arranged to be connected, for example via cables or linkage with a manual shift lever. The second lever arm carries at its free ends a sliding block, which is designed like a clamp and the second lever arm engages the front side.

Summary of the invention

Of the Invention is based on the object, a lever for transmission of switching and / or dialing movements so on, that this is increased in functional reliability and / or cheaper to produce and a corresponding switching unit propose.

These The object is achieved by a lever having the features of claim 1 and solved with a switching unit with the features of claim 13. Preferred or advantageous embodiments of the invention result from the dependent claims, the following description and the accompanying figures.

Of the Lever according to the invention is for transmission of switching and / or Wählbewegungen on a shift shaft suitable and / or trained. The switching and / or selection movements are preferably triggered by a driver who operated a manual shift lever.

Of the Lever has - in particular rigidly coupled - a Swivel, a control and an operating section on, which together about a pivot member arranged in the pivoting member about a common pivot axis in the transmission of the switching and / or Wählbewegungen be pivoted. Thus, the pivot member supports the lever against a Switching unit. The pivoting member can be used, for example, as a pivot bearing, as a recess or through opening in the lever or be realized as a projecting pivot, which received in the switching unit by a corresponding pivot bearing becomes.

At the control section are operating means for the transmission of Switching and / or Wählbewegungen arranged on the lever. The operating means can also be designed as desired so for example as a recess or protruding operating element.

Of the Operating portion has an actuating means on, which for transmitting the switching and / or Wählbewegungen is formed by the lever on the shift shaft, so that or wherein the shift shaft in the axial longitudinal extent is moved in the axial direction. The actuating means is formed as a bolt with an attached sliding portion. The term of the bolt here in the most general meaning an arbitrarily shaped preferably elongated element.

According to the invention the bolt in the attachment portion by means of a joining method attached. At least bolt and operating section are thus formed in several parts, these components only at the production or assembly by means of the joining process with each other be joined and / or connected.

The known lever in which the Actu Although the means are formed as an integrally formed bolt with attached sliding block, while the advantage that the basic body of the lever can be produced inexpensively by forming, but the attachment of the shoe to the bolt with a high manufacturing effort is connected. In particular, the sliding shoe in the axial direction of the bolt against unintentional loss must be secured consuming. Furthermore, high notch stresses are introduced by the switching and / or Wählbewegungen in the bolt, which can lead to a failure of the component in the most unfavorable cases.

In contrast, proposes the invention, the bolt in the operating section attach by means of a Fögeverfahrens, wherein the main body of the lever - hereinafter also called receiving plate - with can be produced at a lower production cost, because the bolt does not have to be reshaped, but as a separate one Part is added to the main body. To this Way it is also possible to use the high notch stresses reduce or more even in the Bolt and thus to initiate the lever.

at In a preferred embodiment, the pin is at least in the area of the sliding section - ie in particular in the area the end portion of the bolt - axially symmetrical and preferably with formed a circular cross-section. For one, such Bolt manufacturing technology favorable to produce, on the other Kerf stress peaks are avoided.

Though It is in principle within the scope of the invention that the bolt in the Operating section welded, riveted or screwed etc. is. However, it is preferred if the bolt means Pressing is added. Press-fitting is a method which is also known under the name Druckfügen, where the bolt, in particular the end-toothed bolt in one punched opening in the operating section with a force acting axially on the bolt with the operating portion Pressed or cold formed, so that a release only still destructive and / or by force is possible.

at a preferred embodiment of the invention is the Sliding portion as a sliding roller, in particular with a cylindrical Outer surface and / or cylindrical Inner surface formed on the end portion of the Bolzens is put on. Such a sliding roller is inexpensive to manufacture and easy to assemble. The sliding roller is preferably made of plastic, in particular a plastic with a low coefficient of friction, preferably formed of PTFE.

at One possible alternative is the Sliding roller arranged on the bolt with tight fit, so this is mounted both sliding and rotationally fixed. For example The sliding roller can be mounted on the bolt with a press fit. In this embodiment, it is possible to additional safety measures for the axial securing of the sliding roller to refrain from unintentional loss.

at another possible alternative is the sliding roller on the bolt with clearance fit and / or free movably mounted, in particular such that the sliding roller on rotatably mounted on the bolt, but optionally positioned displaced is. This embodiment enables in the transmission of the selection and / or switching movements on the shift shaft, the sliding roller on the shift shaft or a hub of the shift shaft unrolls, so that in comparison with a Sliding the actuating resistor is minimized.

at a preferred embodiment particularly due to the manufacturing costs The invention are actuation portion and / or pivot portion and / or operating portion in one piece as a receiving plate formed, which forms the body The receiving plate is preferred as stamped and unshaped, in particular cold formed Realized component.

in the With regard to the pivoting member, it is preferable if this as a pivot pin is formed, which in the pivot portion is attached by means of a joining method. The pivot pin is aligned coaxially with the pivot axis and preferably parallel arranged to the bolt. In a preferred embodiment is the pivot pin with the same joining method, ie in particular by means of press-fitting, in or on the pivoting section or attached in or on the receiving plate. Thereby, that uses the same joining method for bolts and pivot pins It is possible, these two joining operations in a common clamping cost in the context perform a single step. Especially it is preferable if the pivoting portion and the operating portion are formed as a common flat plate portion, so that a common bearing surface for the pressing is given constructive.

In a constructive development of the lever, the actuating means is designed as a ball-headed bolt, which is fastened in the actuating section by means of a joining method, in particular by means of press-fitting. The actuating means and / or the ball stud is not shown transmission means such as cables, linkage or other suitable manner, for example with a manual shift lever, not shown connected.

at a constructive implementation are operating section and operating section formed like a lever, wherein these portions of the pivot portion extend out. It has proven to be particularly advantageous if the lever-like trained operating portion cranked is realized.

considered you put the lever in a projection on a plane which is perpendicular is arranged to the pivot axis, so is the lever-like operating section and the lever-type operating portion preferably perpendicular aligned with each other. The connecting lines, operating means - swivel organ and Actuating means - pivoting member preferably have an angle in the range of 70 to 110 ° and / or are perpendicular to each other or substantially perpendicular to each other.

One Another object of the invention relates to a switching unit with a selector shaft and a lever for transmission of shifting and / or Wählbewegungen, wherein the switching and / or Wählbewegungen over the lever in an axial displacement of the shift shaft implemented are and / or be implemented. The switching unit is characterized that the lever is formed, as just described or according to one of the preceding claims. Claimed Thus, an assembly which both the lever and the shift shaft includes. For transmission of switching and / or selection movements on the switching shaft, this preferably has an at least sections circulating channel, which, for example, with a on the Shift shaft mounted hub can be realized. Preferably the shift shaft is moved by the lever in both axial directions emotional. Alternatively, the shift shaft by means of spring devices biased in one direction so that the lever is the selector shaft actively moving in one direction only.

at a preferred constructive realization of the bolt is radial or arranged substantially radially to the shift shaft, wherein the bolt in an imaginary extension pierces the stem. Alternatively, the planes which are perpendicular to the extension directions of selector shaft and bolts are arranged perpendicular to each other or substantially vertically aligned with the bolt laterally offset and / or is arranged tangentially to the shift shaft.

Brief description of the drawings

Further Features, advantages and effects of the invention will become apparent the following description of a preferred embodiment the invention and the accompanying figures. Showing:

1 shows a schematic, three-dimensional representation of a shift lever as an embodiment of the invention;

2 a schematic, three-dimensional representation of a switching unit with schematically drawn shift lever according to 1 ,

Equal or corresponding parts are in each of the two figures provided with the same reference numerals.

Detailed description the drawings

The 1 shows as an embodiment of the invention in a schematic, three-dimensional view a selector lever 1 which is a receiving plate 2 as a basic body and which can be functionally divided into three subregions. The first portion is as a pivoting portion 3 formed in which a pivot pin 4 is arranged. Starting from the pivot section 3 extends an operating section 5 which is a ball stud 6 carries and an operating section 7 , on or in which a bolt 8th with an attached sliding roller 9 is arranged.

The operating section 5 and the operation section 7 extend in the form of levers from the pivot section 3 , These levers are arranged in plan view approximately at right angles to each other, so that the one-piece receiving plate 2 forms a horizontal, mirrored L-shape. While swivel section 3 and operating section 7 lie in a common plane, so that they together form a flat plate portion, the operating section closes 5 cranked to the pivot section 3 at. Thus, the receiving plate 2 obtained during manufacture by a punching step and a forming step.

The pivot pin 4 is in a passage opening in the region of the pivoting section 3 rigidly secured by pressing and defines a pivot axis 10 which is coaxial with the pivot pin 4 runs. The circumferential outer surfaces of the pivot pin 4 are formed as bearing surfaces for receiving in a bearing device in the switching unit.

At the free end of the through the operating section 5 lever formed is the ball stud 6 in opposite directions, but preferably parallel to the pivot pin 4 also by pressing in the receiving plate 2 attached. The free end portion of the ball stud 6 , So the ball head is in a known manner via cables or transmission Stan gene connected for example with a manual shift lever or connectable, so that of the manual shift lever Wählbewegungen on the selector lever 1 can be transmitted.

The operating section 7 also has a passage opening into which the bolt 8th pressed in, in particular cold-attached is attached. The bolt 8th extends in the same direction and preferably parallel to the pivot pin 4 , At the free end of the bolt 8th a sliding roller is arranged, which has a cylindrical outer shape. The sliding roller is either by means of press fit on the bolt 8th attached or arranged with clearance, so that the sliding roller 9 on the bolt 8th can rotate freely. In the latter case, the sliding roller 9 for example on the bolt 8th snapped or she will - if the selector lever 1 in the switching unit 11 is mounted - positively held and captive by the switching unit, as in the 2 can be seen.

The 2 shows the switching unit 11 , which is arranged for example in a switching dome. The switching unit 11 includes a switching shaft 12 , which at one end switching cam 13 or shift forks (not shown) carries and at its other end rotatable and / or displaceable in a receiving area 15 is stored. At this free end of the shift shaft 12 this one has a hub 16 on, which has a circumferential channel 17 forms, with the bolt 8th with the roller 9 in the channel 17 intervenes.

Upon actuation of the selector lever 1 at the operating section 5 over the ball stud 6 becomes the selector lever 1 around the pivot axis 10 in the area of the pivoting section 3 pivoted so that the sliding section 9 inside against the side walls of the canal 17 pushes and the shift shaft 12 moves in the axial direction. Opposite a pivoting of the switching shaft 12 about its own axis by the shift lever 18 is the sliding roller 9 in the channel 17 In contrast, arranged free-running and can easily on the insides of the channel 17 - Depending on the embodiment - slide off or unroll.

As is clear from the 2 results, pierces the bolt 8th in an imaginary extension of the shift shaft 12 so that the sliding roller 9 even without further security measures form fit through the bottom of the channel 17 is kept captive.

The illustrated, inventive embodiment of the selector lever 1 makes it possible to realize higher leverage than previous solutions in a small space. For this purpose, it is also provided that the lever arm between operating section 5 and swivel section 3 is longer than the lever arm between pivoting section 3 and operating section 7 , The moments occurring due to the lever actuation can be recorded in terms of voltage with the aid of the passage opening or passages. Furthermore, the selector lever 1 Can be inexpensively manufactured by simple components and press connections.

1

selector lever

2

mounting plate

3

pivot portion

4

pivot pin

5

operating section

6

Studs

7

actuating section

8th

bolt

9

caster

10

swivel axis

11

switching unit

12

shift shaft

13

switching cams

14

15

reception area

16

hub

17

channel

18

gear lever

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10111911 A1 [0003]

Claims (15)

Lever ( 1 ) for transmitting switching and / or selection movements to a switching shaft ( 12 ) with a pivoting section ( 3 ), on which a pivoting member ( 4 ) for pivotally mounting the lever ( 1 ) about a pivot axis ( 10 ) on or in a switching unit ( 11 ) is arranged with an operating section ( 5 ), on which operating means ( 6 ) for transmitting the switching and / or selection movements to the lever ( 1 ) are arranged, and with an actuating portion ( 7 ), which an actuating means ( 8th ) for transmitting the switching and / or selection movements on the switching shaft ( 12 ), so that the switching shaft ( 12 ) is displaced in the axial direction, wherein the actuating means as a bolt ( 8th ) with an attached sliding section ( 9 ), characterized in that the bolt ( 8th ) in the operating section ( 7 ) is fastened by means of a joining method. Lever ( 1 ) according to claim 1, characterized in that the bolt ( 8th ) at least in the region of the sliding section ( 9 ) is formed axially symmetrical. Lever ( 1 ) according to claim 1 or 2, characterized in that the bolt in the operating section ( 7 ) is pressed. Lever ( 1 ) according to one of the preceding claims, characterized in that the sliding portion as a cylindrical sliding roller ( 9 ) is trained. Lever ( 1 ) according to one of the preceding claims, characterized in that the sliding roller ( 9 ) on the bolt ( 8th ) is arranged with interference fit. Lever ( 1 ) according to one of the preceding claims, characterized in that the sliding roller ( 9 ) on the bolt ( 8th ) is arranged with clearance. Lever ( 1 ) according to one of the preceding claims, characterized by a receiving plate ( 2 ), which the actuating portion ( 7 ) and / or the pivoting section ( 3 ) and / or the operating section ( 5 ) in one piece. Lever ( 1 ) according to one of the preceding claims, characterized in that the pivoting member as a pivot pin ( 4 ), which in the pivoting portion ( 3 ) is fastened by means of a joining method. Lever ( 1 ) according to one of the preceding claims, characterized in that the actuating means as a ball stud ( 6 ), which in the operating section ( 7 ) is fastened by means of a joining method. Lever ( 1 ) according to one of the preceding claims, characterized in that operating section ( 5 ) and the operating section ( 7 ) like a lever from the pivoting section ( 3 ) extend. Lever ( 1 ) according to one of the preceding claims, characterized in that the lever-like formed actuating portion ( 7 ) is formed cranked. Lever ( 1 ) according to any one of the preceding claims, characterized in that in a projection on a plane perpendicular to the pivot axis ( 10 ) the connecting lines operating means ( 6 ) - pivoting member ( 4 ) and actuating means ( 8th ) - pivoting member ( 4 ) have an angle in the range of 70 ° to 110 °. Switching unit ( 11 ) with a switching shaft ( 12 ) and with a lever ( 1 ) for the transmission of switching and / or dialing movements, wherein the shunting and / or dialing movements via the lever ( 1 ) in an axial displacement of the switching shaft ( 12 ) are implemented and / or implemented, characterized in that the lever ( 1 ) is designed according to one of the preceding claims. Switching unit ( 11 ) according to claim 13, characterized in that the bolt ( 8th ) and / or the sliding roller ( 9 ) in an at least partially the shift shaft ( 12 ) circulating channel ( 17 ) intervenes. Switching unit ( 11 ) according to claim 13 or 14, characterized in that the bolt ( 8th ) radially to the shift shaft ( 12 ) is arranged, wherein the bolt ( 8th ) in imaginary extension the shift shaft ( 12 ) pierces.