FR2789648A1 - Throttle grip for motorcycle has throttle sleeve with collar supporting on ball bearing - Google Patents

Abstract

The throttle grip for a motorcycle has a sleeve (25) with a collar (26) cooperating with a retaining casing (2) fixed to the handlebar. A plug (6) is fitted into the end of the handlebar and has a stop shoulder (5) to limit its insertion. The plug has a bore for a bolt actuating a retaining wedge (14) which holds a ball bearing (16) supporting the throttle grip sleeve for rotation.

Description

The present invention relates to the mounting of rotary handles on

controlled locomotion devices

by handlebars and revolving handles.

  The invention relates, more particularly, to the mounting of rotary handles for controlling the gases on

the handlebars of a motorcycle.

  Generally, motorcycles have, at the right end of the handlebars, a rotary handle for accelerator control. The corresponding end of the handlebar is closed by a plug and on this end is threaded a sleeve which is mounted with a small clearance on said handlebar and the end of which, opposite that adjacent to the end of the handlebar, is terminated by a flange whose periphery is provided with a groove for

  guiding a control cable and which is housed in a retaining member fixed on the handlebar and comprising means for guiding the cable and for fixing a sheath 20 through which said cable passes.

  On this sleeve, which can thus turn on the handlebars, but which is retained in translation by the retaining member, a rubber handle is threaded.25 Such an assembly works perfectly, however for motorcycles used to make in particular all terrain, a hand guard is placed in front of the handle, this being fixed at one end to the handlebars and by the other end to the corresponding free end of the handlebars. Also, sometimes,

  a protective tip is placed at the free end of the handlebar.

  Such an assembly requires drilling the corresponding end of the rubber handle so that the end of the sleeve, opposite the flange, is no longer protected against the weather and that after a certain time of use, the handle flu on the handlebars and becomes difficult to maneuver in rotation, causing fatigue

  of the pilot. One of the aims of the present invention is to remedy this drawback.

  The improvements according to the invention are aimed at mounting rotary handles at one end of a handlebar and of the type comprising a sleeve engaged on said end with a certain clearance and which comprises a flange cooperating with a retaining member fixed on said handlebar. , a rubber handle being fitted on the sleeve, said improvements being characterized in that said assembly comprises a body intended to be engaged in the corresponding end of the handlebar, said body comprising, on the one hand, a shoulder limiting its engagement in the handlebars and, on the other hand, an axial conduit for the passage of a rod having, at one end, a thread intended to cooperate with means for ensuring the fixing of the body in the handlebars and, to the other25 end, a head for its tightening, on the rod being engaged the inner ring of a sealed ball bearing,

  the sleeve, by its corresponding end, being integral with the outer ring of said bearing.

  Thanks to this arrangement, a simple assembly is carried out which, under all conditions of use,

works perfectly.

  According to another characteristic, between the

  rod head and the ball bearing is inserted a ring supporting a hand guard.

  Preferably, between the ring of the hand guard and the ball bearing is inserted a washer comprising, on one side, a shoulder intended to bear against the inner ring of the ball bearing and, on the other side, a projection s' inserting into housing

of the ring.

  Finally, according to a last characteristic, the end of the body, opposite the shoulder and intended to be housed in the handlebars, is terminated by a bevel intended to cooperate with a bevel of a nut, in which

  screws the threaded end of the rod.

  The invention will now be described in more detail with reference to a particular embodiment given by way of example only and shown in the single figure which is a sectional view of a handle, according to the invention. In this figure, the reference 1 designates the handlebars, on which is fixed a retaining member 2 formed by two half-shells 2a and 2b which are assembled by

  screws 3 screwed into corresponding threads.

  In the corresponding end of the handlebar 1 is engaged a body 6 which, at one end, is terminated by a bevel 7 and which has a shoulder 5 intended

  to abut against the end of the handlebar 1.

  The body 6 is pierced with an axial conduit 11 intended to be traversed by a rod 12 whose free end is provided with a thread intended to be screwed into a thread 13 with a locking nut 14 having a bevel 15 intended to cooperate with the bevel 7. It is understood that the tightening of the screw 12 generates a sliding of the nut 14 which comes to marry the internal surface of the handlebar

and locks the body 6 therein.

  On the rod 12 is engaged a ball bearing

  the 16 whose inner ring bears against a projection 17

shoulder 5.

  On the rod 12 is engaged a washer 9 which comprises, on one side, a shoulder 10 bearing against the inner ring of the bearing 16 and, on the other side, a projection 18 fitting into a housing 19 of a ring 20 supporting a hand guard 21, the rod 12 having a head 22 with a hexagonal housing 23 for engagement

a clamping tool.

  The bearing 16 is a sealed bearing and, on its outer ring, is forcibly engaged one of the extremi

  tees 24 of a sleeve 25, the other end of which is terminated by a flange 26 inserted in a housing 30 of the retaining member 5.

  Finally, on the sleeve 25 is mounted a rubber handle 31 which is terminated, at its end adjacent to the member 2, by a flange 32, while the other

  end terminated by a bead 33 is engaged on the outer ring of the bearing 16.

  Of course, in a conventional manner, the flange 26 comprises a groove for guiding a cable and means for fixing it, while the retaining member 2 is provided with a support for a sheath which

is crossed by the cable.

  Thanks to such an assembly, the sleeve is protected

  and we are assured, whatever the conditions of use, that the handle will be able to function perfectly.

  We have described here an embodiment usable for a motorcycle, but of course, the mounting,

  according to the invention, applies to all vehicles with a handlebar using a rotating handle.

  In order to reduce the vibrations of the handlebars, the body 6 can be made of a very heavy material.

  Of course, the invention is not limited to the embodiment which has just been described and represented.

  you. Many detailed modifications can be made without departing from the scope of the invention.

Claims (4)

  1. Improvements in mounting revolving handles at one end of a handlebar and of the type comprising a sleeve (25) engaged on said end with a certain clearance and which comprises a flange (26) cooperating with a fixed retaining member (2) on said handlebar, a rubber handle (31) being fitted on the sleeve (25), characterized in that said assembly comprises a body (6) intended to be engaged in the corresponding end of the handlebar, said body comprising, on the one hand, a shoulder (5) limiting its engagement in the handlebars and, on the other hand, an axial duct for the passage of a rod (12) having, at one end, a thread intended to cooperate with means (14 ) to secure the body in the handlebar and, at the other end, a head (22) for its   tightening, on the rod being engaged the inner ring of a sealed ball bearing (16), the sleeve, by its corresponding end, being integral with the outer ring 20 of said bearing.   2. Improvements in the mounting of rotary handles, according to claim 1, characterized in   that between the head of the rod and the ball bearing (16) 25 is inserted a ring (20) supporting a hand guard (21).   3. Improvements in the mounting of rotary handles, according to claim 2, characterized in that, between the ring (20) of the hand guard and the ball bearing (16) is inserted a washer (9) comprising, on one side, a shoulder intended to bear against the inner ring of the ball bearing (16) and, on the other face, a projection (18) fitting into a housing (19) of the ring (20) .35 4. Improvements to the mounting of rotary handles, according to claim 1, characterized in that the end of the body (6), opposite the shoulder (5) and intended to be housed in the handlebars, is terminated by a bevel ( 7) intended to cooperate with a bevel (15) of a nut (14) into which the threaded end is screwed of the rod (12).