FR2841614A1 - Mounting module for gearbox cable sheath comprises fixing sleeve with hemispherical end cavity at, guide sheath with spherical head and shock absorbers mounted around these, assembly being held together by half-shells - Google Patents

Abstract

The mounting module for a gearbox cable sheath comprises a fixing sleeve (2) with a hemispherical cavity (21) at one end and a guide sheath (3) with a spherical head (31) which fits into the cavity. Shock absorbers (5, 6) are fitted around the sheaths. The assembly is held together by two half-shells (71, 72). These are mounted on the gearbox casing (4) by a groove (723) in one half-shell and by studs which fit into cavities in it. An independent claim is included for a half-shell for use in the module.

Description

CONTROL SHEATH TIP MODULE

GEARBOX CABLES

  The present invention relates to a gearbox terminal tube module by gearbox cables. At present, there are as many transmission cable sheath end systems as there are manufacturers of

this type of systems.

  As a reminder, a command by gearbox cables consists of selecting and shifting via a selection and passage cable respectively connecting the lower part of the gear lever to the mechanical selection and transmission system. passage implanted near the internal mechanics of the gearbox. The control sheath end systems are generally attached to a sheath or platen stop part of the gearbox and allow the guidance along a correctly defined path of said sheave cables.

passage and speeds.

  The multiple existence of the systems recalled above causes many problems for the car manufacturer who must implant the gearboxes and internal control

  associated on each motor vehicle.

  So, he must first manage a

  diversity of parts very important.

  Then, it may be that there is some incompatibility fixing the interfaces of the speed control cables and the corresponding sheath stopping from

two different suppliers.

  Finally, the assembly of current duct tip systems can be particularly difficult, especially when it is performed blind (that is to say, not visible to the operator in charge of assembly) with a lever gear set on the floor of the motor vehicle. The object of the invention is then to overcome all or part of the aforementioned drawbacks. To do this, the subject of the invention is a gearbox terminal tube module comprising transmission cables comprising: a hollow crimping tube adapted to receive a speed control cable and comprising at one of its extremities a hemispherical cavity; a hollow guide tube also adapted to receive a speed control cable and having at one of its ends a ball head adapted to be housed in the cavity of the crimping tube; a first vibration damping device adapted to be arranged around the hollow crimping tube; a second vibration damping device adapted to be arranged around the hollow guide tube; a locking device comprising a first half-shell adapted to be arranged around the first damping device itself disposed around the crimping tube and a second half-shell adapted to be arranged around the second damping device itself disposed around the hollow guide tube and adapted to be clipped onto the first half-shell, said second half-shell having on at least a portion of its outer periphery a groove adapted to engage around a sheath stop portion or platinum gearbox; a holding device adapted to hold the module of the cladding stopper or platen integral; characterized in that the holding device comprises lugs arranged on its lateral edges of at least one of the half-shells and adapted to be housed in cavities of complementary shape made in the stop of

sheath or in the platinum.

  Advantageously, the half-shell has exactly two lugs arranged symmetrically

each on a side edge.

  According to a preferred embodiment of the invention, the half-shell which comprises the

  pins is the second half-shell.

  Advantageously, the lugs have a

  rounded shape in their upper part.

  Preferably, the lugs have come from

material with the side edges.

  Also preferably, the lateral edges are in the form of flexible ears adapted to approach each other or to move towards a position in which they are

  substantially parallel to each other.

  Also preferably, the ears comprise slides adapted to guide the half-shell which integrate them in the cuts located inside the stop of

sheath or platinum.

  According to a preferred variant, the clipping of the second half-shell on the first half-shell is ensured by a circular clip made on a part of the outer periphery of a half-shell and adapted to be housed in a groove on a part of the

  inner periphery of the other half-shell.

  Preferably, the circular clip is formed on a portion of the outer periphery of the second half-shell and the groove is formed at the inner periphery of the first half-shell.

  The invention also relates to a half

  shell, intended to be integrated into a

  module according to any one of the claims

  preceding, characterized in that it comprises lugs arranged on its lateral edges adapted to be housed in cavities of complementary shape made in the judgment of

sheath or in the platinum.

  This half-shell may have the following different characteristics mentioned above: the lugs have a rounded shape in their upper part; the lugs came from material with the lateral edges; the lateral edges are in the form of flexible lugs adapted to approach each other or to move towards a position in which they are substantially parallel to each other; the ears comprise slides adapted to guide the half-shell which integrate them into the cutouts located inside the stop of sheath or platinum; it has a circular clip practiced

  on part of its outer periphery.

  The invention also relates to the other half-shell, intended to be integrated into a

  module according to any one of the claims

  preceding, characterized in that it has a groove practiced on part of its

internal periphery.

  Other features and advantages of the invention will become more apparent on reading

  the following detailed description of an example

  illustrative but nonlimiting embodiment with reference to the following figures in which: FIG 1 is a longitudinal sectional view of a speed control sheath end module according to the state of the art; FIG. 2 is a longitudinal sectional view of a gear sheath nozzle module according to the invention; FIGS. 3 and 4 are respectively cross-sectional views of the module according to FIG. 2 during its assembly in the stop of FIG.

  associated sheath and once mounted in it.

  FIG. 1 represents a longitudinal sectional view of a gearshift nozzle module 1 according to the state of the art, as it is in position installed in a motor vehicle. This module 1 consists firstly of a hollow crimping tube 2, one end of which has a hemispherical cavity 21 in which is disposed a ball head 31 of a hollow guide tube 3, the rectilinear portion 32 of which is placed opposite from that 22 of the tube of

crimping hollow along the axis XX '.

  A not shown speed control cable is slidable along the axis XX 'respectively inside the hollow crimping tube 2 and the hollow guide tube 3 when the module is engaged around a sheath stop portion. 4 of a gearbox, that is to say when the gearbox and its associated internal control are located in

a motor vehicle.

  Around the hollow crimping tube 2 is fitted a first vibration damping device 5, the annular portion 51 of which abuts on one side of the annular portion 23

of the hollow crimping tube 2.

  Similarly, around the hollow guide tube 3 is fitted a second vibration damping device 6 identical to the first 5 and whose annular portion 61 bears against the other face of the annular portion 23 of the

hollow crimping tube 2.

  A locking device 7 consisting of half-shells 71, 72 thus locks the assembly constituted by the crimping tube 2, the guide tube 3 and associated vibration damping devices 5, 6 and maintains these

assembled together.

  More specifically, on the one hand the second half-shell 72 is fitted around the above-mentioned assembly beyond the annular portion 23 of the sheath end 2 while bearing against the inside of the first

half-shell 71.

  On the other hand, the first half-shell 71 is clipped around the second half-shell 72 by means of a plurality of unitary clips 721 formed on the outer peripheral portion 722 of this second shell 72 and which are housed in cavities 711 of complementary shape practiced on the part

  internal device 712 of the first half-shell 71.

  In addition, a holding device 8 passing through the half-shells 71,72 in their upper part and opening on either side makes it possible to maintain all the parts 2,3,4,5,6,7,71, 72 described above in

  a portion 41 of the sheath stop 4.

  This holding device 8 consists of a pin 81 around which a helicoidal return spring 82 is disposed in support on the inside.

of the half-shell 72.

  An end 811 of this pin 81 is housed in a cavity 42 made in a part of

sheath stop 4.

  The other end 812 of this pin 81 in the form of a rod allows a user to disengage this pin from the cavity 42 by compressing

the return spring 82.

  When the rod is released, the pawn opens again from the first half-shell

  71 under the effect of the return spring 82.

  Finally, the second half-shell 72 has on a part of its outer periphery, a groove 723 which is engaged around a part

of the sheath stop 4.

  This module 1 has several disadvantages. First of all, the choice of a pawn and a spring as a holding device is expensive and increases accordingly.

  plus the unit price of the tip module.

  Then, the operators in charge of mounting the internal control of the gearboxes complain about the difficulties of setting up this type of module in the corresponding sheath stops, in particular during

blind montages.

  Among these difficulties, operators must provide twisting forces

consequent for the establishment.

  In addition, there are as many modules as there are gearbox type, internal control and vehicle on which the box is intended to be implanted. This generates a very important diversity of modules to manage

for the car manufacturer.

  To solve these problems, the invention provides the module according to the invention 1 described in

Figures 2 to 4.

  For the sake of simplification, the references common to the parts of the module according to the state of the art and the module according to the invention are

identical.

  It should also be noted that the assembly of the module according to the state of the art and of the module according to the invention is done in a similar way with the same parts, namely according to the following steps: - fitting respectively of the first damping device vibration 5 around the crimping tube 2 and the second vibration damping device 6 around the guide tube 3; placing the first half-shell 71 respectively around the first vibration-damping device 5 fitted on the sheath end-piece 2 and the second half-shell 72 around the second vibration-damping device 6 fitted on the guide tube 2 so that the pin 81 of the holding device 8 opens the first half-shell 71; facing the sheath end 2 and the guide tube 3 by housing the hemispherical head 31 in the cavity 21 so that the rectilinear portion 22 of the sheath end 2 and that of the guide tube 3 are substantially aligned; -clipping the two half-shells 71, 72 between them via the device

locking.

  The module according to the invention 1 differs from that according to the state of the art by the following elements. The holding device 8 of the module according to the invention consists of two lugs 83 integrally formed with the second half-shell 72 each symmetrically implanted on one edge

lateral 84.

  This lateral edge 84 has the shape of a flexible lug 84 which has an inclined slope 841 and which is tangent to the circular section of the half-shell 72 before the introduction of the

module in the duct stop 4.

  Each lug 83 has a superior shape

arondia 831.

  The two flexible ears 84 can thus approach each other or move away to a position in which they are parallel. The first half-shell 71 has on one part of its inner periphery a throat

circular 714 come casting.

  This second half-shell 72 has on one part of its outer periphery 7 a

  circular clip 724 came from molding.

  The circular clip 724 is thus housed in the internal groove 714 during the operation of

  clipping the half-shells 71,72 between them.

  Similarly, the sheath stopping 4 of the gearbox has a generally rectangular shape and has a cutout 41 whose bottom has a semicircular section complementary to the circular section of the half-shells 71, 72 and respectively two cavities 42 of shape complementary to the pins 83 and two inclined slopes 43 symmetrically opposite to each other

  to the longitudinal axis YY 'of the blank 41.

  The introduction of the module according to the invention in the sheath stop 4 is done in the following manner: approach of the module 1 according to the invention substantially in the plane of the cutout 41 so that the groove 723 is in look at part 4 of the sheath stop; once the approach and introduction of the groove 723 of the module into the cutout 41 at the inclined slopes 43 is performed, the module according to the invention is guided on the sheath stop by the same groove. The ears 84 being flexible will deform so as to follow the path imposed by the shape of the cutout 41; -When the circular base of the half shell 72 of the module according to the invention abuts against the bottom of the cutout 41, the lugs 83 are housed in the cavities 42 formed in the sheath stop 4, the maintenance of the module in the sheath stopping 4 is then assured. More specifically, the introduction of the module according to the invention is facilitated by the upper form 832 rounded studs which gives an indication of "swallowing" the editor in charge of the

  mounting the module in the duct stop 4.

  The editor can easily check that the implementation of the module according to the invention is correctly performed. To do this, it suffices to check that the two ears 84 are well apart. This verification can be done visually when the mounting allows it or by probing the ears in

"blind".

  The invention just described has several advantages. First, the pivot link created between the half-shells 71,72 through the circular clip allows a grip for the editor in charge of mounting the nozzle according to the invention largely facilitated. The pivot connection thus created between the half-shells 71, 72 leaves a degree of freedom that leaves the module according to the invention a possibility of rotation, which avoids the torsional force and the necessary orientation that must

perform the fitter.

  Then, the shape of the cutout 41 and ears 84 according to the invention greatly facilitate the guiding of the module in the stop of

sheath 4.

  In addition, the technical economy achieved on the elements of the module is consequent. Indeed, the module according to the state of the art shown in Figure 1 uses two components, namely the pin 81 and the spring 82 to achieve the maintenance of the module 1, a fairly complicated molding there cuts of each half 71.72 shell which houses the pin 81 and the return spring 82. The module according to the invention requires only a modification of the half-shells 71, 72 simple to achieve for example by molding, and a simple modficiation cutting in

sheath stop 4.

  The holding device is thus directly integrated with the mounting lugs 84 and the solidity is ensured by the blocking of the

pins 84 in cavities 42.

  It goes without saying that many improvements can be made without departing from the scope of the invention. For example, the lugs as well as the ears can be of shape

  completely different, different material ....

Claims (13)

A module (1) for a gearbox sheath end comprising: a hollow crimping tube (2) adapted to receive a sheath of a gearshift cable and comprising at least one one of its ends a hemispherical cavity (21); a hollow guide tube (3) also adapted to receive a speed control cable and having at one of its ends a ball head adapted to be housed in the cavity of the crimping tube (31); a first vibration damping device (5) adapted to be arranged around the hollow crimping tube; a second vibration damping device (6) adapted to be arranged around the hollow guide tube; a locking device (7) comprising a first half-shell (71) adapted to be arranged around the first damping device itself arranged around the crimping tube and a second half-shell (72) adapted to be arranged around the second device; damper itself disposed around the hollow guide tube and adapted to be clipped onto the first half-shell, said second half-shell having on at least a portion of its outer periphery a groove (723) adapted to engage around a sheath stopping portion (4) or platinum of the gearbox; a holding device (8) adapted to hold the module of the cladding stopper or platen integral; characterized in that the holding device (7) comprises lugs (83) arranged on the lateral edges of at least one of the half-shells and adapted to be housed in cavities (42) of complementary shape formed in the sheath stop or in the platen.   2.Module according to claim 1, characterized in that the half-shell comprises exactly two lugs arranged symmetrically each on a side edge.   3.Module according to claim 1 or 2, characterized in that the half-shell which   has the lugs is the second half-scale. 4.Module according to any one of   preceding claims, characterized in that   that the lugs have a rounded shape in their upper part (831). 5.Module according to any one of   preceding claims, characterized in that   that the lugs came from material with the side edges. 6.Module according to any one of   preceding claims, characterized in that   that the lateral edges are in the form of flexible ears (84) adapted to approach each other or to move towards a position in which they are substantially parallel to each other. 7.Module according to any one of   preceding claims, characterized in that   that the ears comprise slides (723) adapted to guide the half-shell which integrate them in the cutouts located inside the sheath stop or platinum.   8.Module according to one of the claims   previous, characterized in that the clipping of the second half-shell on the first half-shell is provided by a circular clip (724) made on a part of the outer periphery of a half-shell and adapted to be housed in a groove (714) practiced on one part of the inner periphery of the other half shell.   9.Module according to one of the claims   previous, characterized in that the circular clip is formed on a part of the outer periphery of the second half-shell and the groove is made on a part of the   inner periphery of the first half-shell.   10.Demi-shell, intended to be integrated in a module according to any one of   preceding claims, characterized in that   it comprises lugs arranged on its lateral edges adapted to be housed in cavities of complementary shape practiced   in the sheath stop or in the plate.   11. A half-shell according to claim 10, characterized in that it comprises exactly two lugs arranged symmetrically each on a side edge.   12.Semi-shell according to claim 10 or 11, characterized in that the lugs have a   rounded shape in their upper part.   13.Semi-shell according to any of   Claims 10 to 12, characterized in that   the lugs came from material with the side edges. 14.Demicoquille according to any one of   Claims 10 to 13, characterized in that   the lateral edges are in the form of flexible ears adapted to approach each other or to move towards a position in which they are substantially parallel between them.   15.Semi-shell according to any of   Claims 10 to 14, characterized in that   the ears have slides adapted to guide the half shell that integrate them into the cuts located inside the sheath stop or platinum.   16.Semi-shell according to any one of   Claims 10 to 15, characterized in that   it includes a circular clip practiced on   part of its outer periphery.   17.Semi-shell, intended to be integrated in a module according to any one of   preceding claims, characterized in that   that she has a throat practiced on a part of its inner periphery.