GB2364752A - Shift control device which reduces vibrations transmitted to a shift lever - Google Patents

Shift control device which reduces vibrations transmitted to a shift lever Download PDF

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Publication number
GB2364752A
GB2364752A GB0031858A GB0031858A GB2364752A GB 2364752 A GB2364752 A GB 2364752A GB 0031858 A GB0031858 A GB 0031858A GB 0031858 A GB0031858 A GB 0031858A GB 2364752 A GB2364752 A GB 2364752A
Authority
GB
United Kingdom
Prior art keywords
shift
control device
control shaft
detent
finger
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0031858A
Other versions
GB0031858D0 (en
GB2364752B (en
Inventor
Young-Chan Youk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
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 Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Publication of GB0031858D0 publication Critical patent/GB0031858D0/en
Publication of GB2364752A publication Critical patent/GB2364752A/en
Application granted granted Critical
Publication of GB2364752B publication Critical patent/GB2364752B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • 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
    • F16H63/38—Detents
    • 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
    • F16H57/00—General details of gearing
    • F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Control Of Transmission Device (AREA)

Abstract

A shift control device, for a manual transmission, comprises a control shaft 3 attached to and manipulated by a shift lever (see fig 1). The control shaft 3 transmits motion to a shift rail 5 via a finger 1 engaged in a lug 7 having gaps p1 and p2 which provide clearance to the finger 1. These gaps P1, P2, on either side of finger 1, prevent vibrations being transmitted from inside the transmission, via the shift rail 5 and control shaft 3, to the shift lever. Movement of the control shaft 3 and shift rail 5 is blocked by detents 21, 29 having a spring loaded detent ball or roller engaging detent grooves 15, 25 in the control shaft 3 and shift rail 5, thereby maintaining the gaps P1, P2 on either side of the finger 1.

Description

2364752 Title: Shift control device for manual transmission
DESCRIPTION
The present invention relates to a shift control device for a manual transmission, and in particular, to a shift control device capable of preventing transmission vibration from being transferred to a shift lever by avoiding physical contact at a neutral range and on a shift-in operation except when the shift operation is being performed.
FIG. 1 shows a conventional shift control device for a manual transmission.
In FIG- 1, once a shift lever 51 is manipulated, shift lever manipulation force is transferred to a control shaft 53 such that a finger 55 formed at one end of the control shaft 53 is engaged with a corresponding shift range lug 59 formed on a shift rail 57, resulting in-the manipulation force being transferred to the shift rail 57.
The shift rail 57 is provided with a plurality of shift forks 61 at another end thereof such that the shift forks 61 move with sleeves of synchronization devices (not shown) so as to perform a shift operation.
Also, the shift rail 57 is provided with a plurality of poppet grooves 63 and a corresponding number of poppet balls 67 are secured into the poppet grooves 63 while being elastically supported by springs 69 such that this configuration provides a detent quality when the shift rail 57 is operated.
In this conventional shift control device, the elements such as the shift lever, control shaft, and shift rail are mechanically linked for operating the shift forks such that the vibration and physical friction caused by shift operation inside the transmission is directly transferred to the shift lever, resulting in degraded shift quality.
The present invention has been made in an effort to solve the above problems of the prior art.
It is an object of the present invention to provide- a shift control device capable of preventing transmission vibration and abnormal friction impact among the inside elements from being transferred to the shift lever especially at the neutral range or during a shift-in state by structuring the device without physical contact among the inside elements except during a shift operation.
To achieve the above object, a shift control, device for a manual transmission of the present invention comprises a shift lever for manipulating the transmission, a control shaft connected to a lower end of the shift lever and having a finger vertically projected therefrom, a shift rail connected to the control shaft by receiving the finger of the control shaft into a lug thereof, first detent means interposed between the shift rail and a transmission case for providing detent operation to the shift rail, and second detent means interposed between the control shaft and the transmission case for providing detent operation to the control shaft.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention, and, together with the description, serve to explain the principles of the invention:
FIG. 1 is a sectional view of. a conventional shift control device for a manual transmission; FIG. 2 is an operational view of a shift control device for a manual transmission in neutral range according to a preferred embodiment of the present invention; FIG. 3 is an operational view of the shift control device of FIG. 2 in a first stage of shitting; FIG. 4 is an operational view of the shift control device of FIG, 2 in a second stage of shifting; and FIG. 6 is an operational view of the shift control device of FIG.:2 in a third stage of shifting.
Preferred embodiments of-the present invention will be described hereinafter with reference to the accompanying c1rawings, FIG. 2 is an operational view of a shift control device for a manual transmission in neutral range according to the present invention In FIG. 2, a shift control device of the present invention comprises a control shaft 3 having a finger I and is connected to a shift lever (not shown) at one end thereof, and a shift rail 5 having a lug 7 for receiving the finger 1 of the control shaft 3 and a shift fork 9 which is engaged to a sleeve 11 of a synchronization device 13 such that a shift lever manipulation force is transferred from the shift lever to the sleeve 11 of the synchronization device 13 so as to operate the sleeve 11, A first detent means is interposed between one side of the shift rail 5 and a transmission case 17 for providing detent operation and a second detent means is interposed between one side of the control shaft 3 and the transmission case 17.
The first detent means comprises three poppet grooves 15 formed on an upper surface of the shift rail 5, a poppet ball 21 seated on an opening of a receiving hole 19 formed on a corresponding surface of the transmission case 17, and a spring 23 secured in the receiving hole 19 for biasing the poppet ball 21 such that the poppet ball 21 is positioned between the poppet grooves 15 and the receiving hole 19.
The second detent means comprises three detent grooves 25 formed on an upper surface of the control shaft 3, a detent ball 29 seated around an opening of a receiving hole 27 formed on a corresponding surface of the transmission case 17, and a spring 31 secured in the receiving hole 27 for biasing the cletent ball 2-9 such that the detent ball 29 is po5itioned between the detent grooves 25 and the receiving hole 27.
The lug 7 is provided with a finger hole opened upward so as to receive the finger 1 of the control shaft 3 such that the lug 7 is eng aged with the control shaft 3. The lug 7 and the finger 1 are formed in such a way that whenthey are engaged, there exists gaps P1 and P2 between the inner face of the lug 7 and the outer surface of the finger 1. The first and second detent means operate in three stages during a shift operation..
The gaps PI and P2 are determined according to vibration amplitude inside the transmission such that the vibration inside the transmission is not transferred to the control shaft 3.
The operation of the above structured shift control device for the manual transmission will be described hereinafter with reference to FIG. 3, FIG. 4, and FIG. 5.
FIG. 3, FIG. 4, and FIG. 5 are respective operational views of a shift control device of the present invention in the first, second, and third stages.
At the first stage, once the shift lever (not shown) is manipulated from the neutral range illustrated in FIG. 2 toward a predetermined range, the finger I of the control shaft 3 moves in the ranges of the gaps P1 and P2 without moving the shift rail 5, as shown in FIG. 3.
In the second stage, as the shift lever is further manipulated, the finger I moves to a state of -contacting the lug 7 such thal the lever manipulation force is transferred to the shift rail 5 (see FIG, 4). Accordingly, the shift fork 9 of the shift rail 5 moves the sleeve 11 of the synchronization device.
In this oase, the detent ball 29 is contacted to the detent groove 25 of the control shaft 3 such that the movement of the control shaft 3 is hindered by projected portions defining the detent grooves 25, resulting in a detent feeling, At this time, the poppet ball 21 is not completely positioned in the poppet groove 15 of the shift rail 5.
At the third stage, as shown in FIG. 5, the poppet ball 21 positions itself completely in the poppet groove 15 by an the elastic force of the spring 23 such that the shift rail 5 is moved so as to complete the operation of the synchronization device 13.
As illustrated above, in the shift control device for the manual transmission of the present invention, since there exists gaps P1 and P2 between the inner face of the lug 7 of the shift rail 5 and the outer surface of the finger 1 of the control shaft 3 when the finger 1 is engaged with the lug 7, vibration caused by the transmission is prevented from being transferred to the shift lever and abnormal friction can be avoided. Accordingly, the shift quality is improved.
While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
7

Claims (6)

1 A shift control device for a manual transmission comprising:
a shift lever for manipulating the transmission; a control shaft connected to a lower end of the shift lever and having a finger vertically projected; a shift rail engaged with a control shaft by receiving the finger of the control shaft into a lug of the shift rail; first detent means interposed between the shift rail and a transmission case for providing detent operation to the shift rail; and second detent means interposed between the control shaft and the transmission case for providing detent operation to the control shaft.
2. A shift control device as claimed in claim 1 wherein the first detent means comprises:
poppet grooves formed on the shift rail; a poppet ball seated on an opening of a first receiving hole formed on a corresponding wall of the transmission case; and a spring inserted into the receiving hole for biasing the poppet ball to the poppet grooves.
3. A shift control device as claimed in claim 1 or 2 wherein the second detent means comprises:
detent grooves formed on the control shaft; a detent ball seated on an opening of a second receiving hole formed on a 8 corresponding wall of the transmission case; and a spring inserted into the receiving hole for biasing the detent ball to the detent grooves.
4. A shift control device as claimed in any one of claims 1 to 3 wherein the lug and the finger are engaged with each other with gaps defined between an outer circumference of the finger and an inner wall of the lug.
5. A shift control device as claimed in claim 4 wherein the gaps are varied according to an implitude of vibration inside of the transmission.
6. A shift control device for a manual transmission constructed and arranged substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings of Figures 2 to 5.
GB0031858A 2000-07-13 2000-12-29 Shift control device for manual transmission Expired - Fee Related GB2364752B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2000-0040128A KR100387468B1 (en) 2000-07-13 2000-07-13 Shift control device for mt

Publications (3)

Publication Number Publication Date
GB0031858D0 GB0031858D0 (en) 2001-02-14
GB2364752A true GB2364752A (en) 2002-02-06
GB2364752B GB2364752B (en) 2004-07-07

Family

ID=19677770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0031858A Expired - Fee Related GB2364752B (en) 2000-07-13 2000-12-29 Shift control device for manual transmission

Country Status (6)

Country Link
JP (1) JP2002039378A (en)
KR (1) KR100387468B1 (en)
CN (1) CN1234981C (en)
AU (1) AU780995B2 (en)
DE (1) DE10065753A1 (en)
GB (1) GB2364752B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887949A1 (en) * 2005-07-04 2007-01-05 Renault Sas Motor vehicle`s manual gear box, has fixed stoppers and passage finger, where fixed clearance is introduced between stoppers and part of finger with which stoppers cooperate, and finger`s part is indexed by indexing device
FR2888303A1 (en) * 2005-07-05 2007-01-12 Renault Sas Ball hardness testing device for parallel shaft transmission`s shift rail, has ball hardness testing unit with ball hardness testing cartridge associated to rail, and centralized ball hardness testing unit associated to common drive shaft
FR2892788A1 (en) 2005-10-28 2007-05-04 Renault Sas Gearbox control system and procedure has return spring to take up play between lever and main gear-changing component
EP1826465A1 (en) * 2006-02-24 2007-08-29 Peugeot Citroën Automobiles Sa Automobile gearbox

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4450634B2 (en) * 2004-01-14 2010-04-14 株式会社東海理化電機製作所 Shift lever device
FR2910103A3 (en) * 2006-12-13 2008-06-20 Renault Sas Manual gear box for motor vehicle, has positioning devices provided for indexing angular position of gear change pin, where premier part of gear change pin is placed with mechanical clearance in housing of internal control module
DE102009030823A1 (en) * 2009-06-26 2011-01-20 Koki Technik Transmission Systems Gmbh Rastiervorrichtung for a shift shaft
CN101804170B (en) * 2010-04-09 2012-06-20 铜陵市维新投资咨询有限公司 Traditional Chinese medicine composition for treating hyperglycemia and preparation method thereof
DE102012213177B4 (en) * 2012-07-26 2019-12-19 Schaeffler Technologies AG & Co. KG Shift dome for a manual transmission of a motor vehicle
JP6093150B2 (en) * 2012-11-06 2017-03-08 富士重工業株式会社 Shift control structure of transmission
KR102223739B1 (en) * 2016-03-18 2021-03-04 엘에스엠트론 주식회사 Sleeve Supporting Apparatus for Transmission of Agricultural Vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841798A (en) * 1958-09-25 1960-07-20 Tatra Np Improvements in or relating to synchromesh gears
US4467665A (en) * 1981-02-17 1984-08-28 Toyota Jidosha Kogyo Kabushiki Kaisha Synchronizing device for transmission
US4807489A (en) * 1984-07-26 1989-02-28 Zahnradfabrik Friedrichshafen Ag Gear shift device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835886B2 (en) * 1976-11-12 1983-08-05 トヨタ自動車株式会社 Transmission shift positioning mechanism
JPS6136412Y2 (en) * 1979-10-03 1986-10-22
JPS5653632A (en) * 1979-10-09 1981-05-13 Sanko Kagaku Kk Preparation of o-phenylphenol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841798A (en) * 1958-09-25 1960-07-20 Tatra Np Improvements in or relating to synchromesh gears
US4467665A (en) * 1981-02-17 1984-08-28 Toyota Jidosha Kogyo Kabushiki Kaisha Synchronizing device for transmission
US4807489A (en) * 1984-07-26 1989-02-28 Zahnradfabrik Friedrichshafen Ag Gear shift device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887949A1 (en) * 2005-07-04 2007-01-05 Renault Sas Motor vehicle`s manual gear box, has fixed stoppers and passage finger, where fixed clearance is introduced between stoppers and part of finger with which stoppers cooperate, and finger`s part is indexed by indexing device
FR2888303A1 (en) * 2005-07-05 2007-01-12 Renault Sas Ball hardness testing device for parallel shaft transmission`s shift rail, has ball hardness testing unit with ball hardness testing cartridge associated to rail, and centralized ball hardness testing unit associated to common drive shaft
FR2892788A1 (en) 2005-10-28 2007-05-04 Renault Sas Gearbox control system and procedure has return spring to take up play between lever and main gear-changing component
EP1826465A1 (en) * 2006-02-24 2007-08-29 Peugeot Citroën Automobiles Sa Automobile gearbox
FR2897917A1 (en) * 2006-02-24 2007-08-31 Peugeot Citroen Automobiles Sa GEARBOX OF MOTOR VEHICLE

Also Published As

Publication number Publication date
DE10065753A1 (en) 2002-01-24
GB0031858D0 (en) 2001-02-14
AU780995B2 (en) 2005-04-28
KR20020006753A (en) 2002-01-26
CN1333145A (en) 2002-01-30
CN1234981C (en) 2006-01-04
KR100387468B1 (en) 2003-06-18
AU7257000A (en) 2002-01-17
JP2002039378A (en) 2002-02-06
GB2364752B (en) 2004-07-07

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051229