DE19702777A1 - End fitting with length adjustment for cable-operated actuator - Google Patents

Abstract

The length adjuster (1) may be used especially for a "Bowden" (RTM) cable in a motor vehicle. There is an end-fitting (13) connected to a plastics sheath (12). The sheath surrounds and is bonded to the core (11) at the end of the actuator cable. A seal (15), e.g. an O-ring, fastens one end of a protective bellows (14) to the plastics sheath. The plastics sheath slides inside a guide tube (3) fastened inside a reinforced coupling tube (2). The guide tube is connected to an outer sleeve (5) which surrounds the end of the "Bowden" (RTM) cable (8). An adjustment sleeve, on the outside, with stop cams, is turned to adjust the length and engages the outer sleeve. There is a head-piece (7) with tongues projecting toward the "Bowden" (RTM) cable.

Description

The invention relates to a connecting part for an actuating cable according to the first claim.

The invention can be used wherever there is an actuating cable a connector must be connected.

In motor vehicles in particular, a large number of Use cases so-called actuation cables used. she each have a flexible actuating jacket and one axially therein guided operating soul - usually in the form of a rope or strand trained actuating wire - on, the actuating core is used for power transmission.

There is usually one at both ends of the actuating jacket Arranged arranged via which the actuating jacket Components, for example on the transmission of motor vehicles becomes. Such components can also be movable. Of the Actuating wire runs through the connection parts and stands over them towards the outside, one end with the Actuator and elsewhere with the organ to be actuated can be connected.

A conventional connector for actuator cables consists of a series of components, which are assembled in the axial direction and by various technologies such as crimping steel or clips Plastic can be clamped.  

From DE 93 06 761.5 there is a connecting part for an actuating cable a sleeve for receiving an actuating jacket of the Actuating cable known, the sleeve via a joint with a Guide tube is connected and also by a connecting sleeve for the definition of the actuation cable is surrounded, which is positively connected to the sleeve. This solution also points a series of components that are assembled in the axial direction and can be clamped which increases weight and assembly effort arises. Furthermore, this solution is not just any Bracket contour can be realized within a very short time.

It is therefore an object of the invention the disadvantages of the prior art Eliminate technology and develop a connector that at minimal weight is simple and inexpensive to manufacture and at low weight Assembly effort and low system play a modular System structure allowed with which any bracket contour within can be realized in the shortest possible time.

This object is achieved by the features of the first claim solved.

Subclaims give advantageous embodiments of the invention again.

The solution according to the invention provides that the shell of the Actuating cable is molded directly with plastic. The The required forces are transmitted by deforming the Wire ends of the cable sheath reached, resulting in a positive connection between cable sheath and extrusion.  

The shape of the extrusion enables a common Storage of this with a coupling element and damper in one axially split shell. The headpiece is also in the same bowl added.

The coupling element thus combines the damper with the Decoupling function against vibrations and the absorption of the Guide tube, causing a possible noise through a touch of the components, guide tube and overmolding is avoided.

This arrangement guarantees a fixed fixation Components to each other and thus freedom from play in the axial or radial Direction without one of the components, by crimping, plastic to deform.

By exchanging the head piece, every required bracket contour is can be realized within a very short time, so that a cost reduction as well as saving time on new developments. The Bracing of the two shells is carried out tangentially Produced clips, which means that they do not take all the axial force, but only a small radial component.

To save further costs, the cable encapsulation carries the Cable core also the end fitting for fastening the Cable pull, for example on gears or gears. A Wear-free running of the end fitting in the guide tube is ensured by a suitable plastic pairing ensured.

The invention is based on an embodiment and two figures explained. The figures show  

Fig. 1 according to the invention connecting part in longitudinal section;

Fig. 2 inventive connector without end fitting and rubber bag in exploded view.

Fig. 1 shows the connecting part 1 according to the invention in longitudinal section, wherein the actuating cable 8 was molded directly with a sleeve 5 made of plastic. The cable extrusion coating 12 of the cable core 11 carries the end fitting 13 for fastening the cable to a suitable part, which is not shown in the figure. A seal 14 is arranged between the end fitting 13 and the reinforcement 4 of the coupling element 2 and is seated on a fixation 15 of the end fitting 13 .

Fig. 2 shows an exploded view of the coupling element 2 and damper 10 are together in an axially divided bearing shell 6 , in which the head piece 7 is also received. The axially divided bearing shells 6 are closed and clamped by tangentially attached clips 9 .

The front end of the guide tube 3 is pulled over the end fitting 13 ( FIG. 1). The shape of the encapsulation of the actuating cable 8 as a sleeve 5 enables a secure and positive connection with the damping 10 , the bearing shell 6 and the coupling element 2 , which is taken up together with the head piece 7 by the bearing shell 6 without play.

The connecting part according to the invention for an actuating cable has the Advantage that each with little installation effort, weight and cost required bracket contour can be realized within a very short time.  

Reference list

1

Connector

2nd

Coupling element

3rd

Guide tube

4th

Reinforcement

5

sleeve

6

Bearing shell

7

Headpiece

8th

Operating cable

9

Clips

10th

damper

11

Cable soul

12th

Plastic encapsulation by

11

13

End fitting

14

poetry

15

Fixing ring

Claims (10)

1. Connection part ( 1 ) for an actuating cable ( 8 ) with a form-fittingly connected by means of an elastic coupling element ( 2 ) guide tube ( 3 ), wherein the coupling element ( 2 ) is designed so that a connection between the guide tube ( 3 ) and sleeve via positive connection ( 5 ) is produced, is also surrounded by an axially split bearing shell ( 6 ) so that a positive and play-free connection to a head piece is made. 2. Connection part according to claim 1, characterized in that the coupling element ( 2 ) is designed so that it simultaneously takes over the noise coupling, sealing and pretensioning of the overall system. 3. Connection part according to claims 1 and 4, characterized in that the sleeve ( 5 ) is sprayed directly onto the outer casing of the actuating cable ( 8 ). 4. Connection part according to claims 1 to 3, characterized in that the ends of the sleeve of the actuating cable ( 8 ) are bent so that a positive connection between the sleeve ( 5 ) and the sleeve of the actuating cable ( 8 ) is achieved. 5. Connection part according to claims 1 to 4, characterized in that the axially divided bearing shell ( 6 ) are fixed by tangentially arranged clip connectors ( 9 ). 6. Connection part according to claims 1 to 5, characterized in that in the interior of the coupling element ( 2 ) reinforcements ( 4 ) which prevent lateral evasion of the guide tube ( 3 ). 7. Connection part according to claims 1 to 6, characterized in that the coupling element ( 2 ) and damper ( 10 ) are vulcanized onto the sleeve ( 5 ). 8. Connection part according to claims 1 to 7, characterized in that the cable core ( 11 ) is provided with a plastic encapsulation ( 12 ) that this is prevented from buckling when actuated. 9. Connection part according to claims 1 to 8, characterized in that the plastic extrusion coating ( 12 ) is designed such that this simultaneously enables the end fitting ( 13 ) for the attachment of the cable ( 11 ) to the circuit or transmission. 10. Connection part according to claims 1 to 9, characterized in that the plastic extrusion coating ( 12 ) is designed such that it carries a fixing ring ( 15 ) which axially defines the seal ( 14 ).