WO1996010705A1 - Mecanisme de selection de rapports destine a une transmission synchronisee pour vehicule - Google Patents

Mecanisme de selection de rapports destine a une transmission synchronisee pour vehicule Download PDF

Info

Publication number
WO1996010705A1
WO1996010705A1 PCT/GB1995/002175 GB9502175W WO9610705A1 WO 1996010705 A1 WO1996010705 A1 WO 1996010705A1 GB 9502175 W GB9502175 W GB 9502175W WO 9610705 A1 WO9610705 A1 WO 9610705A1
Authority
WO
WIPO (PCT)
Prior art keywords
ratio
selector
locking member
reverse
mechanism according
Prior art date
Application number
PCT/GB1995/002175
Other languages
English (en)
Inventor
Andrew Julian Burrows
Andrew Robert Gray
Original Assignee
Rover Group Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rover Group Limited filed Critical Rover Group Limited
Priority to AU34807/95A priority Critical patent/AU3480795A/en
Priority to GB9701633A priority patent/GB2304836B/en
Publication of WO1996010705A1 publication Critical patent/WO1996010705A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/302—Final output mechanisms for reversing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3086—Shift head arrangements, e.g. forms or arrangements of shift heads for preselection or shifting

Definitions

  • the invention relates to a ratio selector mechanism of a synchromesh vehicle transmission having a synchromesh operating device for use when selecting reverse ratio to prevent clashing.
  • the system described uses the operation of a forward ratio synchroniser to brake rotating parts of the gearbox to a standstill before engaging reverse ratio.
  • the forward ratio synchroniser in each case is operated by moving a gear lever across the gate of the gear box into a position which will then enable the gear lever to be moved in a gear shift direction for selection of reverse ratio.
  • the selector lever when selecting reverse ratio, the selector lever forcibly abuts simultaneously both the forward ratio shift head and a shift head for reverse ratio and the force will increase in proportion to the force applied by the driver when selecting reverse ratio.
  • the spring load is constant, there is a risk that the force applied by the spring will not be sufficient to move the selector lever off the forward ratio shift head when an attempt is made to select reverse gear rapidly, thereby resulting in jamming.
  • An object of the present invention is to provide an improved ratio selector mechanism of a synchromesh vehicle transmission for preventing gear clash when selecting reverse ratio.
  • a selector mechanism of a synchromesh vehicle transmission comprising a selector for engaging a synchromesh forward ratio, a selector for engaging a non-synchromesh reverse ratio and a shift member movable in gear select directions from a neutral position for selecting the ratios, the mechanism being arranged such that by moving the shift member from the neutral position to select reverse ratio the forward ratio synchromesh will be operated prior to the engagement of reverse ratio to prevent clashing, characterised in that a locking member is provided mounted for translational movement and an abutment surface is provided which limits the translational movement of the locking member, the locking member being arranged such that during selection of reverse ratio, the locking member is brought into contact with part of the forward ratio selector so as to cause the locking member to undergo said translational movement until it contacts the abutment surface whereupon continued movement of the shift member to select reverse ratio causes the locking member to shift the forward ratio selector so as to operate a synchroniser of the forward ratio synchromesh prior to the engagement of reverse ratio
  • the mechanism of the invention does not operate the forward ratio synchronizer through the action of a spring as described in the prior systems mentioned above and does not suffer from the disadvantages of such systems where it is possible to "beat" the operation of the forward ratio synchroniser. Moreover, the operation of the forward ratio synchroniser takes place during the selection of reverse ratio and not during cross gate movement and the mechanism of the invention is particularly advantageous in that respect .
  • the abutment surface is arranged to inhibit further translational movement of the locking member after the locking member has been moved into contact with the abutment surface.
  • the locking member is arranged to shift the forward ratio selector so as to operate the forward ratio synchromesh until the locking member clears the abutment surface whereupon the operation of the forward ratio synchromesh ceases prior to the engagement of reverse ratio.
  • the mechanism is always operable to ensure that the forward ratio cannot actually be selected after operation of its synchroniser prior to the engagement of reverse ratio.
  • operation of the forward ratio synchroniser will cease and the forward ratio selector can then return to, eg, a neutral position.
  • the translational movement of the locking member may take place against a resilient bias means such as a torsion spring.
  • the locking member may be arranged to contact a ramp- like surface of the forward ratio selector during the selection of the reverse ratio, contact with the ramp-like surface being arranged to effect the translational movement of the locking member.
  • the locking member may be mounted for tipping movement whereby during disengagement of the reverse ratio the locking member can tip to enable it to move over the abutment surface.
  • Bias means may be provided against which the locking member tips.
  • the bias means may be the same bias means as that against • which the locking member moves during its translational movement.
  • a return device may be provided for returning the forward ratio selector towards a neutral position after the operation of the forward ratio synchroniser.
  • the return device may comprise a ramp and follower arrangement which provides a resilient return bias.
  • the follower may comprise a spring-loaded ball which co ⁇ operates with the ramp.
  • the return device may comprise an arm which is movable into a position in which it can co-operate if necessary with a portion associated with the forward ratio selector to ensure that the forward ratio selector returns towards the neutral position.
  • the movable arm may be co- operable with said portion associated with the forward ratio selector as the reverse ratio selector disengages the reverse ratio.
  • the movable arm is arranged to be moved by part of the selector mechanism which is shifted to select reverse ratio.
  • the movement of the arm in that way enables the arm to be correctly positioned in a convenient manner relative to the said portion of the forward ratio selector.
  • the said part of the selector mechanism acts on a surface of the arm to cause the arm to move.
  • the surface may comprise an edge of a slot formed in the arm.
  • the arm may have a hook-like end arranged to co ⁇ operate, if necessary, with the said portion of the forward ratio selector.
  • the aforesaid movable arm may be mounted for movement on fixed part of the transmission, for example a member fixed to a casing of the transmission.
  • the movable arm may be operatively connected to a selector member whereby selection of the reverse ratio causes the selector member to move with the arm and engage reverse ratio.
  • the selector member and the arm extend one each side of a pivot therefor about which the arm and selector member move when selecting reverse ratio.
  • the return device may comprise a surface associated with the forward ratio selector which is engaged by a ratio selector lever used to select the forward and reverse ratios.
  • a ratio selector lever used to select the forward and reverse ratios.
  • the surface associated with the forward ratio selector is preferably oblique to a co-operable part of the lever to enable the lever to effect a camming action on the surface to move the forward ratio selector towards its neutral position.
  • the selector lever will normally be biased by a spring into a gate position corresponding to the said forward ratio.
  • the first said forward ratio selector is arranged to select third and fourth ratios of a transmission having four or more forward ratios.
  • the locking member is preferably operable to shift the first said forward ratio selector so as to effect operation of the fourth ratio synchroniser when reverse ratio is being selected.
  • the abutment surface may be provided on a shaft which supports a selector for selecting a further forward ratio.
  • Fig 1 is a cross-section through part of a selector mechanism of a synchromesh vehicle transmission in accordance with the invention
  • Fig 1A is a perspective view of showing a locking member and abutment surface forming part of the selector mechanism shown in Fig 1
  • Fig IB is a perspective view of the locking member of Figs 1 and 1A
  • Figs 2 to 6 show diagrammatically step-by-step operation of a synchroniser operating device used in the mechanism shown in Fig 1 and
  • Figs 7, 8 and 9 show diagrammatically various position of the locking member of the selector mechanism shown in Fig 1.
  • a transmission in the form of a gearbox indicated generally at 10 has a casing 12 which supports a fixed shaft 14 and an axially slidable shaft 16.
  • the shaft 14 slidably supports a selector 18 for first and second forward ratios of the gearbox and the shaft 16 slidably supports a selector 20 for selecting third and fourth ratios of the gearbox.
  • the shaft 16 is connected via a resilient detent in the form of a spring loaded ball 22 to a selector 24 for selecting a fifth ratio of the gear box.
  • the ball 22 locates in a recess 16a in the shaft 16.
  • the shaft 16 is arranged to operate a selector generally indicated at 26 for selecting a reverse ratio.
  • the ratios 1 to 5 are forward ratios and the selectors 18, 20 and 24 select the forward ratios through respective synchronisers of known kind.
  • a synchroniser for use in selecting fourth ratio is indicated at 28.
  • a collar 30 on the shaft 16 carries a synchroniser operating device 31.
  • the shaft 16 is drivably connected to the collar 30 by means of a diametral pin 32 passing through the shaft and the collar.
  • a support arm 34 extends from the collar 30 and terminates at a fork 36 through which the shaft 14 extends.
  • the fork 36 is slidable on the shaft 14 and prevents movement of the support arm 34 transverse to the shaft 14.
  • the support arm 34 has a pair of spaced apart flanges 38 which are formed with slots 40 which support a locking member 42 for translational and pivotal movement.
  • the locking member 42 has a pin 44 projecting from each side thereof and the pins 44 slidably locate in the respective slots 40.
  • the locking member 42 is formed with a step 46 for locating part of a torsion spring 48.
  • the spring 48 has a portion 48a which extends along the step 46 and two side sections 48b extending therefrom each of which is bent through a loop 48c. Free ends 48d of the spring 48 are attached to the respective sides of the support arm 34 by studs 49.
  • the spring 48 biases the locking member 42 against a stop surface 50 on the arm 34.
  • the locking member 42 is formed with a flat surface 52 at the opposite end to the pins 44.
  • the locking member 42 has an oblique surface 54 adjacent the pins 44.
  • the selector 20 has a sleeve 56 formed with a ramp like surface 58 which is aligned with the surface 54 in the axial direction of the sleeve 56.
  • the selector 20 defines a socket 60 housing a spring loaded ball 62 which contacts opposing ramps 64a, 64b formed on the shaft 14 when the selector 20 occupies a neutral position as shown in Fig 1.
  • the shaft 14 is provided with an abutment surface 66 for co-operation with the surface 52 of the locking member 42 as described below with reference to Figs 2 to 6.
  • a bracket 61 is mounted rigidly on the casing 12 and supports by means of a pivot 61a an arm 63 which is fast with a selector member 65.
  • the arm 63 is formed with an L- shaped slot 63a having a first limb 63b and a second limb 63c.
  • the pivot 61a passes through an aperture 61b in the arm 63.
  • the arm 63 is formed with a hook-like terminal end 67 (having an internal edge 67a) which, as described below, can make contact with a projection 69 on the sleeve 56 of the selector 20.
  • the projection 69 extends outwardly from the sleeve 56.
  • the selector member 65 is formed with a fork end 65a which slidably locates a sliding idler gear 65b.
  • the idler gear 65b can be slid into and out of engagement with a layshaft gear 65c and a further gear 65d of the transmission to select reverse ratio.
  • the gears 65b, 65c and 65d are illustrated diagrammatically in Fig 1.
  • the collar 30 carries a pin 77 which projects slidably into the slot 63a.
  • the selector 18, the shaft 16 and the selector 20 are axially fast with selector rods 70, 72 and 74 respectively.
  • the selector rods 70, 72 and 74 are shown diagrammatically in Fig 1 and are movable in the directions indicated by arrows A in Figs 1 and 7 by means of a shift mechanism 76 shown in detail in Figs 7, 8 and 9.
  • the operation of the transmission will now be described with particular reference to Figs 2 to 6. In Figs 2 to 6 the position of the arm 63 is shown in broken lines.
  • a gate 71 showing a neutral path N and select directions for ratios 1 -5 and R from neutral path is illustrated in Fig 7.
  • the present invention is particularly concerned with the selection of reverse ratio without clashing of gears.
  • the shaft 16 When selecting reverse ratio, the shaft 16 is moved upwards by selector rod 72 as viewed in Fig 1 and carries with it the locking member 42. Such movement causes the ball 22 to move away from the shaft 16 and disengage the recess 16a in the shaft 16 to permit shaft 16 to move upwards relative to the fifth ratio selector 24 which is prevented from moving upwards from the Fig 1 position by part of the casing 12.
  • the selector 24 is retained in the Fig 1 position by a further ball 22a which locates in a recess 114 in the shaft 14.
  • Fig 2 shows the locking member 42 in the Figs 1 and 1A neutral position immediately prior to shifting the shaft 16 to select reverse ratio.
  • the shaft 16 When disengaging reverse ratio, the shaft 16 is moved downwardly by selector rod 72 as viewed in Figs 1 to 6 thereby causing the arm 63 and fork 65a to move clockwise about the pivot pin 61a.
  • the abutment surface 66 causes the locking member 42 to pivot about the axis of pins 44 against the bias of the spring 48 as shown in Fig 6.
  • the locking member 42 rides over the abutment surface 66 and the spring 48 draws the locking member back into the Fig 1 neutral position.
  • the bias created by the ball 62 riding up the ramp 64a will normally cause the selector 20 to move downwards back to the Fig 1 position.
  • the internal surface 67a of the hook-like end 67 of the arm 63 lies over the projection 69. Therefore, as the shaft 16 continues to move downwards to disengage reverse ratio, the internal surface 67a will make contact with the projection 69 as in Fig 6, the upper position of which is shown in broken lines in Fig 6, and will draw the selector 20 downwards towards the Fig 1 position. Therefore, there is no possibility of the 4th gear synchroniser 28 remaining under load from selector 20 after disengaging reverse ratio.
  • the shift mechanism 76 is shown in detail in Figs 7, 8 and 9.
  • the selector rod 72 is formed with a recess 80 for receiving a selector lever 82 (constituting the aforesaid shift member) .
  • the selector rods 70 and 74 are formed with similar recesses 84, 86.
  • a blocking device 88 comprises three fingers 90, 92 and 94. The finger 90 is connected to the fingers 92, 94 and the fingers are mounted for movement in unison from side to side as indicated by the arrows B in Fig 7.
  • the selector lever 82 is defined by or connected to a gear shift lever
  • Fig 7 will cause the blocking device 88 to be moved in either of the directions indicated by arrows B.
  • the shift mechanism 76 When reverse ratio is to be selected, the shift mechanism 76 will be in the condition shown in Fig 7 with the selector lever 82 positioned within the recess 80 enabling the selector rod 72 to move the shaft 16. In that condition, finger 92 occupies only part of recesses 84 and 86. The finger 94 abuts a face 87 on the selector rod 70. In that way, the blocking member 88 permits free travel of the selector rod 72, limited travel of the selector rod 74 and blocks travel of the selector rod 70.
  • the finger 92 permits the rod 74 and hence the selector 20 to move upwardly by sufficient distance to enable the locking member 42 to move into the Fig 4 position so that the selector 20 can operate the synchroniser 28. • Movement of the rod 72 in the opposite direction will cause the selector 24 to engage fifth ratio.
  • the shaft 16 is moved downwardly as viewed in Fig 1 and a shoulder 113 on the shaft 16 causes the selector 24 to be moved downwardly with it, the ball 22a leaving the recess 114.
  • the selector mechanism 76 When the selector mechanism 76 is positioned to select third or fourth ratio as shown in Fig 8, the selector lever 82 occupies the recess 84, the finger 90 of the blocking member 88 occupies the recess 80 and the finger 94 occupies the recess 87. In that way, the blocking member 88 permits free movement of the selector rods 74 but blocks movement of the selector rods 70, 72.
  • the selector 20 is moved downwardly from the Fig 1 position and the ramp surface 58 will move into contact with the oblique surface 54 of the locking member 42. The continued downward movement of the selector 20 causes the locking member 42 to undergo translational movement towards the shaft 14.
  • the shaft 14 is formed with a further clearance space 110 below the abutment surface 66 and the locking member 42 enters the space 110 so that the third ratio can be freely selected.
  • the selector lever 82 occupies the recess 86 as shown in Fig 9, the finger 90 occupies the recesses 80 and 84 and the fingers 94, 92 clear the recesses 86, 87 completely. Therefore, the blocking member 88 allows free movement of the selector rod 70 but blocks movement of the selector rods 72 and 74.
  • the ball 62 and ramp 64a provide a resilient return bias for the selector 20 and, additionally, the arm 63 having the hook 67 can be provided.
  • the shaft 16 can be arranged to operate an alternative reverse gear arrangement 120 through an alternative reverse ratio selector 126 (shown diagrammatically in broken lines in Fig 1) drivably connected to the shaft 16 and hence the collar 30.
  • part of the selector rod 74 defining a lower left corner of the recess 84 as viewed in Figs 7, 8 and 9 is formed with a chamfer 100.
  • the chamfer 100 is co- operable with an inclined surface 101 on the selector lever 82.
  • the selector 20 has been moved into the Fig 5 position having operated the synchroniser 28, the chamfer 100 occupies a position shown in broken lines in Fig 7.
  • the position of the selector lever 82 when reverse ratio is selected is also shown in broken lines.
  • the selector lever 82 is operated to disengage reverse ratio, the selector lever 82 will eventually occupy the full line position as shown in Fig 7 ie its neutral position. Should the selector 20 "stick" in the Fig 5 position instead of returning under the influence of the ba and ramp 62, 64a, the inclined surface 101 will make contact with the chamfer 100 when the selector lever moves to the Fig 8 position.
  • the selector lever 82 effects a camming action which causes the selector rod 74 to move into its full line position in Fig 7.
  • the selector lever 82 will be resiliently biased in known manner into the third/fourth gate position shown in Fig 7, ie into the recess 84, so that there is no risk of the selector 20 not returning to the Fig 1 neutral position after reverse ratio has been disengaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Mechanical Operated Clutches (AREA)
  • Control Of Transmission Device (AREA)

Abstract

Un mécanisme comprend un dispositif de verrouillage (42) monté en vue d'un déplacement en translation transversale par rapport à la direction de sélection des vitesses, ainsi qu'une surface de butée (66), qui limite ce déplacement en translation du dispositif de verrouillage (42). Pendant la sélection d'un rapport de marche arrière par un sélecteur (26, 126), ce dispositif de verrouillage (42) est mis en contact avec une partie (58) d'un sélecteur de rapports avant (20) de façon à subir ce déplacement en translation jusqu'à ce qu'il entre en contact avec la surface de butée (66). La poursuite du déplacement du sélecteur de rapport arrière (26, 126) force le dispositif de verrouillage (42) à déplacer le sélecteur de rapports avant (20) pour la mise en fonction d'un synchronisateur (28) du mécanisme de synchronisation de rapports avant, laquelle précède l'engagement du rapport arrière, ce qui évite tout grincement lorsqu'on passe la marche arrière.
PCT/GB1995/002175 1994-09-30 1995-09-15 Mecanisme de selection de rapports destine a une transmission synchronisee pour vehicule WO1996010705A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU34807/95A AU3480795A (en) 1994-09-30 1995-09-15 A ratio selector mechanism of a synchromesh vehicle transmission
GB9701633A GB2304836B (en) 1994-09-30 1995-09-15 A ratio selector mechanism of a synchromesh vehicle transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9419741.5 1994-09-30
GB9419741A GB9419741D0 (en) 1994-09-30 1994-09-30 A synchromesh vehicle transmission

Publications (1)

Publication Number Publication Date
WO1996010705A1 true WO1996010705A1 (fr) 1996-04-11

Family

ID=10762144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/002175 WO1996010705A1 (fr) 1994-09-30 1995-09-15 Mecanisme de selection de rapports destine a une transmission synchronisee pour vehicule

Country Status (3)

Country Link
AU (1) AU3480795A (fr)
GB (2) GB9419741D0 (fr)
WO (1) WO1996010705A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0866239A3 (fr) * 1997-03-18 1999-07-07 New Venture Gear, Inc. Boíte de vitesses à plusieurs rapports à commande manuelle avec dispositif de freinage pour marche arrière
EP1022495A1 (fr) * 1999-01-21 2000-07-26 Renault Boíte de vitesses à marche arrière synchronisée
FR2815104A1 (fr) * 2000-10-11 2002-04-12 Renault Boite de vitesse manuelle avec frein de marche arriere
EP1201972A1 (fr) * 2000-10-31 2002-05-02 AISIN AI Co., Ltd. Dispositif commande pour une transmission synchronisée
FR2943112A1 (fr) * 2009-03-13 2010-09-17 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses
FR2943113A1 (fr) * 2009-03-13 2010-09-17 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses
FR2947603A1 (fr) * 2009-07-03 2011-01-07 Peugeot Citroen Automobiles Sa Dispositif de commande interne de boite de vitesses d'un vehicule automobile avec ensemble de verrouillage
FR2947604A1 (fr) * 2009-07-03 2011-01-07 Peugeot Citroen Automobiles Sa Dispositif de commande interne de boite de vitesses avec systeme de coulissement de noix de fourchette a solidarisation par billage et desengagement automatique
FR2960035A1 (fr) * 2010-05-17 2011-11-18 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181036A (en) * 1977-05-26 1980-01-01 General Motors Corporation Stepped-ratio gearing for motor vehicles
US4221283A (en) * 1977-05-09 1980-09-09 Saab-Scania Aktiebolag Device for facilitating gear changing in gear boxes
US4510818A (en) * 1982-11-19 1985-04-16 Toyota Jidosha Kabushiki Kaisha Device for preventing reverse gear buzzing in a manual transmission
US5119917A (en) * 1989-09-30 1992-06-09 Suzuki Jidosha Kogyo Kabushiki Kaisha Gear knocking sound preventing device for transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221283A (en) * 1977-05-09 1980-09-09 Saab-Scania Aktiebolag Device for facilitating gear changing in gear boxes
US4181036A (en) * 1977-05-26 1980-01-01 General Motors Corporation Stepped-ratio gearing for motor vehicles
US4510818A (en) * 1982-11-19 1985-04-16 Toyota Jidosha Kabushiki Kaisha Device for preventing reverse gear buzzing in a manual transmission
US5119917A (en) * 1989-09-30 1992-06-09 Suzuki Jidosha Kogyo Kabushiki Kaisha Gear knocking sound preventing device for transmission

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0866239A3 (fr) * 1997-03-18 1999-07-07 New Venture Gear, Inc. Boíte de vitesses à plusieurs rapports à commande manuelle avec dispositif de freinage pour marche arrière
EP1022495A1 (fr) * 1999-01-21 2000-07-26 Renault Boíte de vitesses à marche arrière synchronisée
FR2788824A1 (fr) * 1999-01-21 2000-07-28 Renault Boite de vitesses a marche arriere synchronisee
FR2815104A1 (fr) * 2000-10-11 2002-04-12 Renault Boite de vitesse manuelle avec frein de marche arriere
EP1201972A1 (fr) * 2000-10-31 2002-05-02 AISIN AI Co., Ltd. Dispositif commande pour une transmission synchronisée
FR2943112A1 (fr) * 2009-03-13 2010-09-17 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses
FR2943113A1 (fr) * 2009-03-13 2010-09-17 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses
EP2228569A3 (fr) * 2009-03-13 2010-11-03 Peugeot Citroën Automobiles SA Système de commande pour une boîte de vitesses
FR2947603A1 (fr) * 2009-07-03 2011-01-07 Peugeot Citroen Automobiles Sa Dispositif de commande interne de boite de vitesses d'un vehicule automobile avec ensemble de verrouillage
FR2947604A1 (fr) * 2009-07-03 2011-01-07 Peugeot Citroen Automobiles Sa Dispositif de commande interne de boite de vitesses avec systeme de coulissement de noix de fourchette a solidarisation par billage et desengagement automatique
FR2960035A1 (fr) * 2010-05-17 2011-11-18 Peugeot Citroen Automobiles Sa Systeme de commande pour une boite de vitesses

Also Published As

Publication number Publication date
GB9419741D0 (en) 1994-11-16
GB2304836B (en) 1998-02-11
AU3480795A (en) 1996-04-26
GB2304836A (en) 1997-03-26
GB9701633D0 (en) 1997-03-19

Similar Documents

Publication Publication Date Title
US4228693A (en) Transmission shift control apparatus
US5492209A (en) Shift control mechanism for a multi-speed countershaft transmission
JPH0131058B2 (fr)
JP5746555B2 (ja) 変速機におけるリバースシフト装置
WO1996010705A1 (fr) Mecanisme de selection de rapports destine a une transmission synchronisee pour vehicule
US4581950A (en) Gear changing device
US8056433B2 (en) Shifting device for a manual transmission of a vehicle
CA1243222A (fr) Frein antigrincement et antibattement sur transmission
US4745824A (en) Manual transmission with mechanism for preventing reverse gear shift noise
CN100400938C (zh) 变速器离合器联锁装置
EP0926406A2 (fr) Dispositif de changement de vitesse pour une boíte de vitesses manuelle
US6820515B2 (en) Gear shift lever operating mechanism
US4181036A (en) Stepped-ratio gearing for motor vehicles
US4827792A (en) Transmission shift control mechanism
EP0170630B1 (fr) Dispositif de commande d'une boîte de vitesses pour des véhicules à moteur
CA1174942A (fr) Mecanisme de passage des vitesses d'une transmission
US5806368A (en) Gearshift device for a semiautomatically shiftable change-speed gearbox
US4648283A (en) Gear shift control mechanism
JP2696630B2 (ja) 手動変速機のギヤ鳴り防止機構
JP5953747B2 (ja) 副変速機構付き変速機
KR101849012B1 (ko) 수동변속기의 후진단변속 보킹 방지장치
JPH059663B2 (fr)
JPH0221647Y2 (fr)
JPH04351373A (ja) 手動変速機のシフト機構
US4679663A (en) Transmission anti-clash and anti-rattle brake

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA