FR2790116A1 - Arrangement for mounting brake pedal, with return mechanism, on one side of car so that it connects to brake activating mechanism on other side of car, to reduce manufacturing costs - Google Patents

Abstract

Mounting arrangement (10) comprises transverse bar (40), mounted so that it rotates on bodywork structural element. Bar connects brake pedal (38) from pedal (12) set to raking device. Bar is curved in one or more places so that it goes round functional elements attached to bodywork. Bodywork element is transverse bulkhead separating engine and occupant compartments.

Description

RenO46 I.doc "Arrangement for mounting with movement reference of a

  "The invention relates to an arrangement for mounting with movement reference of a pedal unit on a body structure element of a motor vehicle. The invention relates more particularly to an arrangement for mounting with movement reference of a crankset on a body structure element of a motor vehicle which carries functional elements of the vehicle, of the type in which the body structure element of the vehicle comprises, on a first determined side of the vehicle, a first plate bearing a vehicle braking device, of the type in which the first plate has anchoring points for a crankset on the first side, of the type in which the body structure element comprises, on a second side opposite transversely to the first side , a second plate carrying a return pedal on the second side, and of the type in which mechanical means link at least one pedal, in particular of f reinforcement of the crankset

reference to the braking device.

  There are many examples of arrangements for

  mounting with movement return of a pedal board.

  Document US-A-4,353,430 describes and represents an arrangement which allows the mounting of a crankset on a body structure element of a commercial motor vehicle. The body structure element comprises an apron which extends substantially in the transverse direction and which is delimited in a lower part by a vehicle floor and a central vehicle transmission tunnel. The apron has two cutouts on the right and on the left which are capable of receiving, during assembly, a support plate for a bottom bracket of the vehicle whose periphery is RcnO461.doc

  likely to be bolted around the edge of the cutout.

  Depending on whether the vehicle is a vehicle suitable for driving on the first side (right) or driving on the second side (left), the bottom bracket is mounted in the cutout on the right or left . On each side of the central transmission tunnel, a connection plate has compressed air inlet and return ducts intended to allow the actuation of a

  vehicle pneumatic brake booster.

  The crankset includes a clutch pedal, which is capable of controlling a clutch by means of a hydraulic circuit to which it is connected, and a brake pedal, which is connected to a pneumatic cylinder connected to the inlet pipes. and compressed air return from the connection plate which control the actuation of the brake booster

vehicle tire.

  Thus, in such an assembly, the crankset can be mounted indifferently to the right or to the left of the vehicle, which makes it possible during manufacturing to assemble only a single type of body of the vehicle which is fitted with a crankset on the side

  appropriate according to the country of destination of the vehicle.

  Such an arrangement is suitable for a utility vehicle which can benefit from a pneumatic brake booster, but cannot be used in the case of a vehicle without a pneumatic braking circuit, as is the case for a vehicle.

  light utility or for a passenger vehicle.

  Indeed, such vehicles include hydraulic braking circuits which require the installation of rigid hydraulic lines having a minimum of connections. For this reason, an assembly of the type described in document US-A-4,353,430 cannot be used, the connection plate used therein comprising RcnO461.doc

279 011 6

  flexible ducts and two fittings, which could be a

source of leaks.

  Also, in the case of a vehicle comprising a conventional hydraulic braking circuit, it is necessary to use a hydraulic control of the circuit which is

  arranged on the correct pipe side.

  A first solution consists in providing convention-

  on the two opposite sides of the vehicle apron, anchor points for a brake master cylinder and for an associated bottom bracket of the vehicle which, when mounted, are selectively assembled on the right or left on the vehicle apron depending on whether the we want the vehicle to be suitable for driving

  right or left hand drive.

  This solution has the drawback, on the vehicle assembly line, of making a distinction between right-hand drive vehicles and left-hand drive vehicles from the start of the assembly operations of the braking system elements, this which requires rigorous monitoring of vehicles and considerably increases the

  manufacturing costs of these vehicles.

  A second solution is to equip all vehicles with a braking device located on the same side of the vehicle, and to link it either directly to a brake pedal mounted on the same side, or by mechanical means, to a pedal. brake mounted on the opposite side. Document FR-2,561,799 describes and represents a disengageable arrangement of this type suitable for a dual-control vehicle. In this document, the main clutch and brake pedals are connected to straight concentric shafts which are themselves connected to pedals

  clutch and brake of an auxiliary pedal.

  RcnO461.doc The straight concentric shafts extend transversely from one side to the other of the vehicle bulkhead, which requires that no functional element intersects the axis of

these trees.

  s Thus, such an arrangement poses the problem of compatibility in terms of space requirement of the mechanical means with functional elements of the vehicle, such as air ducts or an air conditioning unit.

of the vehicle.

  o0 To solve this problem, the invention proposes an arrangement of the type described above comprising means

  bypassing the functional elements of the vehicle.

  To this end, the invention proposes an arrangement of the type described above, characterized in that the mechanical means i5 comprise a transverse bar, which is rotatably mounted on the body structure element, which links the said pedal of the crankset reference to a braking device, and which is bent at at least one point to bypass the functional elements carried by the body structure element of the

vehicle.

  According to other characteristics of the invention - the transverse bar comprises at least two elbows to circumvent the functional elements of the vehicle, in particular an air conditioning unit of the vehicle, - the body structure element of the vehicle is an apron which s extends substantially transversely and vertically with respect to the longitudinal direction of the vehicle body, - the apron has an opening which is crossed by the first plate and carries on a rear face the second plate and the air conditioning unit, the transverse bar being RcnO461 .doc inserted longitudinally between the rear face of the apron and the air conditioning unit, - the first and second plates have supports which extend behind the rear face of the apron and which carry transverse bearings which receive the ends of the bar transverse for its rotational mounting, - the support of the 'first plate is a support e mbouti which is fixed to the first plate on anchor points allowing the fixing of the braking device on the first plate, - the supports of the first and second plates comprise transverse bearings for the respective articulations of an actuation lever controlling the braking device and for pedals of the deflection pedal, - the transverse bar is coupled to the braking device via a first radial arm of the transverse bar which is linked by a pivot with a transverse axis to a end of a first link, the other end of the first link being articulated by a pivot with a transverse axis at the lower end of a lever which is articulated at its upper end by a pivot with a transverse axis on the support of the first plate, an intermediate part of the lever pivotally receiving a yoke arranged at the end of a rod carried coaxially by the device itif braking, - the support of the first plate comprises an inclined tab which extends vertically in front of the actuating lever to form a stop of the actuating lever, and which is pierced to allow, during assembly, the passage of the rod carried by the braking device, RcnO461.doc 2790116

279 011 6

  - The crossbar is coupled to the brake pedal of the return crankset by means of a second radial arm of the crossbar which is linked by a pivot with a transverse axis to one end of a second link, I ' other end of the second link being articulated by a pivot with an axis transverse to a part

intermediate of said pedal.

  Other characteristics and advantages of the invention

  will appear on reading the detailed description which follows

  for the understanding of which reference will be made to the appended drawings in which: FIG. 1 is an overall perspective view of an arrangement for mounting with movement reference of a crankset for right-hand drive according to the invention, - Figure 2 is a detailed perspective view of the

  return bar in the vicinity of the first plate.

  In the description which follows, figures of

  identical reference designates identical parts or having

similar functions.

  There is shown in Figure 1 the whole of an arrangement 10 for mounting with movement reference of a crankset 12 on a body structure element of a

  motor vehicle, in particular on an apron 14.

  This arrangement 10 is intended to allow the mounting of a bottom bracket 12, in particular a bottom bracket 12 for a right-hand drive vehicle, on the bulkhead 14 also allowing mounting

  a pedal board for a left-hand drive vehicle.

  In known manner, the apron 14 of the vehicle has an orifice 16, which is obtained by making a cut in the sheet of the apron 14, and which is intended to allow the mounting of a first plate 18 carrying a braking device 20, to As an example, a master cylinder, of which we can see a RenO46 1.doc tank 22, and which controls a vehicle brake system. For a left-hand drive vehicle, the first plate 18 is intended to receive a crankset (not shown) for left-hand drive, a brake pedal of which is directly linked to the master cylinder 20. In the present case, which is that of a arrangement 10 for right-hand drive vehicle, the return pedal 12 is coupled, as will be seen later in more detail, to the master cylinder by

io mechanical means.

  In known manner, the first plate 18 is a substantially vertical plate in the form of a bowl. The first plate 18 passes through the orifice 16 and a rim or periphery 17 thereof is fixed to the sheet of the apron 14, for example by screws (not shown) which pass through holes 24 uniformly distributed around the periphery 17, and which are received in threads of the apron 14, for example in

  threads of captive nuts on the apron 14.

  Thus, the first plate 18 in the form of a bowl has a bottom 26 which extends vertically and substantially parallel to the deck 14. The bottom 26 of the plate 18 carries the master cylinder 20 and has an opening 28 which allows the passage of a rod 30, coaxial and linked to a piston (not

  shown) of the master cylinder 20.

  In known manner, the bottom 26 of the plate 18 includes anchor points 32 for fixing a pedal for left-hand drive (not shown) of the vehicle. These anchor points can also be used advantageously for the

fixing the master cylinder 20.

  Also, in the embodiment of the invention, the plate 18 has four anchor points 32 which are located substantially at the four corners of a square centered on RcnO461.doc 2790116 the opening 28 which allows the passage of the rod 30 for controlling the master cylinder 20. These four anchor points 32, which are normally intended to receive a crankset for left-hand drive, receive within the scope of the invention a mechanism 33 for movement return which will be described later. According to the invention, the crankset 12 is a crankset for right-hand drive which is carried by a second plate 34, which is also fixed to the transverse bulkhead 14 of the vehicle. The second plate 34 comprises a front transverse support plate 35 which is fixed to a rear face

  46 of the apron 14, for example by means of nuts 36.

  The second plate 34 comprises supports for pedals 37 for accelerator, 38 for brake, and 39 for clutching the vehicle. In Figure 1, there is shown the brake pedal 38

  which is articulated at its upper end on a support 41.

  The support 41 is here formed of two parallel longitudinal plates which extend from front to rear from the transverse front support plate 35 and between which is received the upper end of the pedal 38, articulated between

  the plates of the support 41 by a pivot with a transverse axis.

  In known manner, at least one pedal of the pedal 12, in particular the brake pedal 38, is capable of actuating the rod 30 secured to the piston of the master cylinder 20 by means of a transverse bar 40 which is mounted to rotate on the apron 14 and which extends transversely

  between the second plate 34 and the first plate 18.

  According to the invention, this crossbar 40 is bent at at least one point to bypass elements

  functional which are carried by the bulkhead 14 of the vehicle.

  Indeed, the transverse apron 14 of the vehicle is capable of receiving various functional elements of the vehicle R.nO461.doc. By way of example, and without implied limitation of the invention, these elements are shown in the form of an air conditioning unit 42 and an air duct 44 which are arranged and / or fixed near the rear face 46 of the pedals 14. This arrangement is not restrictive of the invention, and the functional elements of the vehicle could be other elements than the air conditioning unit 42 or the ventilation duct 44. The functional elements of the vehicle 1o could thus comprise, as a variant and without limitation of the invention, an electronic control unit for controlling an accessory of the vehicle, a boss of the bulkhead 14, a wiper motor, or even a control linkage

  of a vehicle gearbox.

  Similarly, the body structure element, carrying the aforementioned functional elements, may be different from the apron 14. Thus, these functional elements could be carried by the floor of the vehicle or any other structural part located in the environment of the crankset. return and mechanical means which couple the latter to the braking device. Finally, the vehicle's braking system can be arbitrary and in no way limited to the

  hydraulic braking previously described.

  The crossbar 40 has at least one elbow making it possible to bypass at least one functional element of the vehicle. In Figure 1, there are shown bends 48 and 50 of the bar 40 which allow respectively to bypass the

  air conditioning unit 42 and the vehicle ventilation duct 44.

  In the preferred embodiment of the invention, the air conditioning unit 42 is a rectangular block which is fixed to the bulkhead 14 of the vehicle, and from an upper face RcnOJ6 I.doc 2790116 I0 of which extends a duct bent 52 which has a vertical branch 56 which extends vertically parallel to the apron 14 and one end mouth 54 of which crosses the apron 14, so that an empty space remains between the vertical branch 56 of the conduit 52 and the

rear face 46 of the apron 14.

  The elbow 48 of the crossbar 40 advantageously allows it to bypass the vertical branch 56 of the bent conduit 52 so that the crossbar 40 is inserted longitudinally between the rear face 46 of the

  apron and vertical branch 56 of the air conditioning unit.

  This arrangement is particularly advantageous because thus the transverse bar 40 occupies a minimum of space inside the vehicle, which makes it possible to significantly reduce the volume of the dashboard compared to a conventional vehicle. which would be fitted with a straight return bar. Similarly, the ventilation duct 44 extends vertically and parallel to the rear face 46 of the apron 14 so that the elbow 50 is inserted longitudinally between the rear face 46 of the apron 14 and the ventilation duct 44 . The elbow 50 has substantially the shape of a U so as to

  closely follow the shape of the ventilation duct 44.

  As illustrated in Figure 1, the crossbar 40 is rotatably mounted in the transverse direction by two end bearings which are carried by the support 41 of the second plate 34 and by a support 58 carried by the first

platinum 18.

  As illustrated in FIG. 2, the support 58 of the first plate 18 is a support 58 of stamped sheet metal which has the shape of a housing 60 substantially parallelepipedal adjoining a portion of cylinder 62 of longitudinal axis. At one end Rcno461. Joc I1 before the cylinder portion 62 of which is arranged a front plate 64 of square-shaped fixing, which is pierced with holes 66 which are substantially arranged at the four corners of the plate 64 in the form of a square. These holes 66 coincide with the anchoring points 32 for fixing a crankset for left-hand driving carried by the first plate 18. Thus, compared with a conventional left-hand mounting, the support 58 comes to replace the crankset with drive to the left. The cylinder 62 is of a diameter corresponding to the opening 28 formed in the first plate 18, so as to allow the passage of the coaxial rod 30 linked to the piston of the master cylinder 20. Advantageously, the cylinder 62 is no longer not closed so as to allow the assembly or disassembly of the housing 58 even though the rod 30 is coaxial

  linked to the master cylinder piston is fitted.

  The substantially parallelepipedal housing 60 in particular comprises a short vertical vertical side wall 68, an inclined vertical rear wall or leg 70 and a long straight vertical side wall 72 which receives a left bearing

  end 74 of articulation of the transverse bar 40.

  It will be noted that a similar and symmetrical articulation, which will not be described, is arranged in the support 41 of the second plate 34 for the articulation of the transverse bar.

  40 on its right end bearing (not shown).

  Inside the housing 60 is arranged the mechanism 33 for returning the movement of the device 10. This mechanism 33 consists of a lever 76 which is articulated at its upper end 78 on a bearing 80. The bearing 80 is mounted between the two vertical side walls 68 left short and lateral

  vertical 72 right long of housing 60.

  RenO46 I.dc2790116 The lever 76 is coupled in an intermediate part 82 to a yoke 84 which is integral with the control rod 30

  of the master cylinder 20 described above.

  The transverse bar 40 comprises a radial arm 86 at one end of which is articulated one end 88 of a link 90 whose other end 92 is articulated at a lower end 94 of the lever 76 by means of a spacer 93. In this way, any movement of rotation of the transverse bar 40 is transformed into a movement of rotation of the lever 76, which makes it possible to pull or push back the rod 30 of the master cylinder by amplifying the force which is transmitted to the transverse bar. 40, the lever 76 ensuring a

  reduction of the effort exerted.

  Advantageously, the inclined vertical rear wall 70 extends parallel to the position occupied by the lever 76 in its rest position to form a stop for the longitudinal deflections of the rod 30 of the master cylinder. This arrangement allows a simple, reliable and inexpensive mechanical stop for the rod 30 to be produced. Furthermore, the inclined vertical rear wall 70 has at its lower end a bore 69 which is arranged in alignment with the rod 30 and which allows mounting or dismounting the master cylinder rod without removing the support 58 from the

first deck 18.

  As illustrated in FIG. 1, it will be noted that a similar and symmetrical mechanism, which will not be described in detail, is arranged in the support 41 of the second plate 34 to allow the pedal 38, by means of a rod 96, to drive a radial arm 98 arranged at the right end of the bar 40, and therefore to drive the transverse bar 40 in rotation when the driver of the vehicle exerts pressure

on the brake pedal 37.

RcnO46 1.doc 2790116

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  The invention as described has only one transverse bar 40, which couples the brake pedal 38 to the braking master cylinder 20. This is why, as illustrated in FIG. 1, the clutch pedal 39 is directly coupled to a master cylinder 100 for controlling a hydraulically controlled clutch. In the case where this emitting cylinder would also be carried by the first plate 18, an arrangement 10 comprising a second angled crossbar of return similar to the

  io bent crossbar 40 could be considered.

  The arrangement 10 is particularly advantageous since the angled crossbar 40 and the deflection mechanisms are linked to the plates 18 and 34. In this way, during assembly of the vehicle, the assembly of the two plates 18 and 34, i5 of the transverse bar 40, of the deflection pedal 12 can be mounted in one piece on the transverse bulkhead 14 of the vehicle, which makes it possible to save appreciable time on this assembly operation, hence a significant reduction in costs of making such

surgery.

RcnO46 I.doc

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Claims (10)

  1. Arrangement (10) for mounting with movement reference of a crankset (12) on a body structure element of a motor vehicle which carries functional elements (42, 44) of the vehicle, of the type in which the vehicle body structure element comprises, on a first determined side of the vehicle, a first plate (18) carrying a vehicle braking device (20), of the type in which the first plate (18) has points anchor (32) for a crankset on the first side, of the type in which the body structure element comprises, on a second side opposite transversely to the first side, a second plate (34) carrying a crankset (12) of return on the second side, and of the type in which mechanical means link at least one pedal (38), in particular for braking the pedal (12) returning to the braking device (20), characterized in that the mechanical means comprise a bar (40) transverse, which e st rotatably mounted on the body structure element, which links the said pedal (38) of the return pedal (12) to the braking device (20), and which is bent at at least one point to bypass the functional elements (42, 44) carried by the element of vehicle body structure.   2. Arrangement (10) according to the preceding claim, characterized in that the crossbar (40) comprises at least two elbows (48, 50) for bypassing the functional elements (42, 44) of the vehicle, in particular a block (42) of vehicle air conditioning.   3. Arrangement (10) according to any one of   previous claims, characterized in that the element of   vehicle body structure is an apron (14) which extends RcnO461. doc 2790116 279 011 6   substantially transversely and vertically with respect to   the longitudinal direction of the vehicle body.   4. Arrangement (10) according to claim 3, characterized in that the deck (14) has an opening (16) which is crossed by the first plate (18) and carries on a rear face (46) the second plate (34 ) and the air conditioning unit (42), the transverse bar (40) being inserted longitudinally between the rear face (46) of the deck (14) and the air conditioning unit (42).   5. Arrangement (10) according to claim 4, characterized in that the first (18) and second (34) flaps comprise supports (58, 41) which extend behind the rear face (46) of the deck ( 14) and which carry transverse bearings (74) which receive the ends of the   transverse bar (40) for its rotational mounting.   6. Arrangement (10) according to claim 5, characterized in that the support (58) of the first plate (18) is a stamped support which is fixed to the first plate on anchor points (32) allowing the fixing of   braking device (20) on the first plate (18).   7. Arrangement (10) according to any one of   claims 5 or 6, characterized in that the supports (58,   41) of the first (18) and second (34) plates comprise transverse bearings (80) for the respective articulations of an actuating lever (76) controlling the braking device (20) and for pedals (37,38 , 39) of the pedal (12) of reference.   8. Arrangement (10) according to any one of   Claims 5 to 7, characterized in that the bar (40)   transverse is coupled to the braking device (20) via a first radial arm (86) of the transverse bar (40) which is connected by a pivot with a transverse axis to an end (88) of a first connecting rod (90), the other end (92) of the first connecting rod (90) being articulated by a pivot with an axis transverse to the lower end of the lever (76) which is articulated at its upper end (78) by a pivot (80) with transverse axis on the support (58) of the first plate (18), an intermediate part (82) of the lever pivotally receiving a yoke (84) arranged at the end of a rod   (30) carried coaxially by the braking device (20).   9. Arrangement (10) according to claim 8, characterized in that the support (58) of the first plate comprises an inclined tab (70) which extends vertically in front of the actuating lever (76) to form a stop the actuating lever (76), and which is pierced to allow, during assembly, the passage of the rod (30) carried by the device braking (20).   10. Arrangement (10) according to any one of   Claims 5 to 9, characterized in that the bar (40)   transverse is coupled to the brake pedal (38) of the deflection pedal by means of a second radial arm (98) of the transverse bar which is linked by a pivot with a transverse axis to one end of a second link (96), the other end of the second link (96) being articulated by a pivot with an axis transverse to an intermediate part of the so-called pedal (38).