USRE35772E - Solenoid system for, for example, a brake/shift interlock for vehicular transmission control - Google Patents
Solenoid system for, for example, a brake/shift interlock for vehicular transmission control Download PDFInfo
- Publication number
- USRE35772E USRE35772E US08/178,047 US17804794A USRE35772E US RE35772 E USRE35772 E US RE35772E US 17804794 A US17804794 A US 17804794A US RE35772 E USRE35772 E US RE35772E
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- United States
- Prior art keywords
- solenoid
- plunger
- iaddend
- iadd
- park
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- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/02—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism
- B60R25/021—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch
- B60R25/02142—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising externally controlled safety devices for preventing locking during vehicle running condition
- B60R25/02144—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the steering mechanism restraining movement of the steering column or steering wheel hub, e.g. restraining means controlled by ignition switch comprising externally controlled safety devices for preventing locking during vehicle running condition interlocked with gear box or gear lever
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/10—Range selector apparatus comprising levers
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/22—Locking of the control input devices
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/65—Gear shifting, change speed gear, gear box
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/22—Locking of the control input devices
- F16H2061/223—Electrical gear shift lock, e.g. locking of lever in park or neutral position by electric means if brake is not applied; Key interlock, i.e. locking the key if lever is not in park position
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/74—Inputs being a function of engine parameters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5889—For automotive vehicles
- Y10T70/5925—Transmission
- Y10T70/5934—Selective-type shift rod, fork or block
- Y10T70/5938—With switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5889—For automotive vehicles
- Y10T70/5965—Control levers with switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/2042—Flexible transmitter [e.g., Bowden cable] and hand operator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20396—Hand operated
- Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
- Y10T74/20462—Specific cable connector or guide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20582—Levers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20582—Levers
- Y10T74/20612—Hand
Definitions
- FIGS. 1-3 and 6-8 hereof are substantively identical to those figures in the grandparent case.
- This invention relates to the shift control mechanism for an automatic transmission and more particularly to a brake/shift interlock for the shift control mechanism of an automatic transmission in a vehicle, such as an automobile or the like.
- the present invention also relates to an improved solenoid design and various manufacturing techniques in the making of the brake/shift interlock.
- the transmission is capable of being placed in either a "Park” mode or various non-"Park” modes by manual actuation of a shift control mechanism.
- the non-Park modes typically include "Reverse,” “Neutral,” “Drive,” “Second” and "First.”
- the shift control mechanism typically includes a shift lever which is either floor mounted or may be column mounted on the steering column. In most such shift control mechanisms there is provided a detent mechanism, which interacts with the shift lever to aid in maintaining it in a selected position associated with a selected transmission mode.
- One such brake/shift interlock of which Applicants are aware requires, in addition to the existing shift control mechanism having a key-actuated interlock cam, or Park/Lock member, (hereinafter "P/L" member), a further brake interlock cam for blocking the P/L member, a solenoid having a plunger and rigid arm extensible to actuate the brake interlock cam into actuating engagement with the P/L member when the ignition switch is in the "Run" position and being deactivated when the vehicle's brake is actuated, and a switch for detecting when the shift control mechanism is in the Park position in order to inhibit operation of the solenoid during brake actuation when other than in Park, so as to prevent the noise and wear associated with its actuation.
- P/L Park/Lock member
- the solenoid plunger (62) had to be crimped, staked or otherwise fixedly attached to an actuating cable (44; comparable to the cable 44 hereof).
- an actuating cable 44; comparable to the cable 44 hereof.
- a further object of the present invention is to overcome these manufacturing and tolerancing problems with respect to the electromagnetic, solenoid actuator for the brake/shift interlock.
- a brake/shift interlock for use in a vehicle having a shift control mechanism for an automatic transmission.
- the transmission has a Park mode and non-Park modes, i.e., modes other than Park.
- the shift control mechanism includes a shift lever for controlling selection of the transmission modes and further includes a detent mechanism having a latch and a latch plate.
- the latch plate includes several detent notches, one of which corresponds with a Park position.
- the latch is adapted to be in detented engagement with respective ones of the detent notches and is selectively, manually actuable out of the detented engagement with a respective detent notch.
- the shift control mechanism preferably further includes a P/L member actuable to lock the latch in the Park position detent notch.
- the vehicle includes an ignition switch having Off and Run positions, and an ignition lock mechanism is associated with the ignition switch and is connected with the P/L member for actuating that member to a Lock position to maintain the latch locked in the Park position detent notch when the ignition switch is in its Off position.
- the vehicle preferably further includes a brake switch connected in an electrical power circuit and adapted to be actuated in conjunction with the actuation of a brake pedal or the like.
- the brake/shift interlock includes an electromagnetic actuator, such as a solenoid, and includes means such as a flexible cable or the like for mechanically connecting it directly with the P/L member.
- the solenoid is adapted to be connected electrically in the brake light power circuit, which includes the brake switch, so as to control its actuation as a function of the actuation of that brake switch. Energizing of the solenoid serves to move the connecting means, which joins the solenoid with the P/L member, to thereby urge that member into the Lock position.
- the P/L member preferably is mounted on a pivot axis, and the ignition lock mechanism operates to apply an off-axis force to that member to actuate it toward the Lock position to lock the latch in the Park position.
- the brake/shift interlock is connected with the P/L member in a similar off-axis manner to effect the same response of the P/L member when the solenoid is energized.
- the solenoid and its connecting means exists mechanically in parallel with the ignition lock mechanism.
- the solenoid and its connecting means are arranged mechanically in series with the ignition lock mechanism. More specifically, the latter embodiment employs a cable normally associated with the ignition lock mechanism to also provide the connecting means associated with the brake/shift interlock solenoid.
- the brake/shift interlock solenoid may be of a novel construction, in which an opening extends axially through the solenoid housing and thus also through the solenoid's plunger.
- the cable of the ignition lock mechanism passes through the solenoid housing and its plunger for connection with the P/L member at one end and with the ignition lock mechanism at the other.
- the solenoid plunger is in interfacing engagement with the cable, such that the two are moved in unison relative to the solenoid.
- the power circuit in which the brake/shift solenoid is connected preferably employs a battery potential applied to one side of the ignition switch, while the other side of the ignition switch is connected to one side of the solenoid, and the other side of the solenoid is connected to a junction.
- This junction includes one side of a brake lamp and one side of the brake switch, the other side of the brake lamp being connected to ground potential and the other side of the brake switch being connected to the battery potential.
- the solenoid is thus energized through the lamp when the ignition switch is in the Run position. However, when the brake switch is actuated, the voltage difference across the solenoid will be nil, thereby causing it to be de-energized.
- the brake/shift interlock solenoid in contrast with the exemplary solenoid of the parent case, includes a first, smaller diameter, axial opening through the solenoid plunger and a second, counter-bored, larger diameter, axial opening though the plunger, at the end of which larger opening a seat is provided.
- Interfacing with the seat is preferably a mushroomed-shaped, button member fixedly attached to the cable. This interfacing causes the cable and plunger to move together.
- the cable button member which is fixedly attached to the cable by the cable manufacturer, can be inserted and slipped into a completely assembled solenoid, through the back, larger diameter opening.
- the button member having a larger diameter than the smaller diameter opening, then seats into the seat at the bottom of the counter bore, causing the cable and the plunger to move together when the solenoid is actuated.
- FIG. 1 is a perspective view, partially in cross-section and partially cutaway and broken away, depicting a first embodiment of the brake/shift interlock of the invention in combination with a shift control mechanism for an automatic transmission shown in its locked, Park position;
- FIG. 2 is a perspective view, partially in cross-section and partially broken away, depicting the brake/shift interlock and shift control mechanism of FIG. 1, but the unlocked, Park position;
- FIG. 3 is a perspective, partial view, depicting the brake/shift interlock and shift control mechanism of FIGS. 1 and 2 .,being shown in a non-Park position ("N" - neutral)
- FIG. 4 is a side, cross-sectional view depicting the preferred, improved embodiment of a solenoid particularly suited for use in the brake/shift interlock of FIGS. 1-3, including a cable, having a button engaging interface with the stepped, axial opening in the solenoid plunger, extending therethrough and being shown in the energized least spring biased) state; while
- FIG. 5 is a side, cross-sectional view showing the solenoid and cable combination of FIG. 4, but with the solenoid in its de-energized state and the cable and solenoid having b pulled to the right against the biasing force o biasing spring.
- FIG. 6 is a perspective, partial view, depicting a second, exemplary embodiment of a brake/shift interlock in combination with the shift control mechanism, shown in its locked, Park position similar to the first embodiment illustrated in FIG. 1; while
- FIG. 7 is a perspective, partial view, showing the brake/shift interlock embodiment of FIG. 6, but with the control shift depicted in a non-Park position, similar shown in the first embodiment in FIG. 3.
- FIG. 8 is a generalized circuit diagram or schematic of the brake light power circuit, which includes the ignition switch, various brake lights and the brake switch, and further showing the brake/shift interlock solenoid included therein in accordance with the invention.
- shift control mechanism 10 for an automatic transmission (not shown).
- the shift control mechanism 10, or simply shift control ID is depicted as being of the type which is floor mounted in the vehicle (not shown for purposes of simplicity), though it will be appreciated that the following disclosed principles of the invention would be similarly applicable to a shift control mounted elsewhere in the vehicle, as for instance on the steering column.
- shift control 10 depicted in the figures herein is of a particular type typically found in vehicles manufactured by Ford Motor Company
- brake/shift interlock of the invention is similarly applicable to shift controls of other similar, but not identical, construction; as for instance those disclosed in the aforementioned U.S. Pat. Nos. 4,473,141 and 4,474,085.
- Shift control 10 includes a shift lever 12 secured to a bracket or yoke 14, which is pivotally mounted on a base member 16 in a conventional manner (not shown) for movement about a respective pivot axis.
- the base member 16 is secured to a body member such as a floor pan (not shown) by a plurality of fasteners (not shown) installed through respective mounting bosses 17.
- the shift lever 12 has secured to the upper end thereof a handgrip member 18 which includes a pushbutton 20 disposed therein.
- the pushbutton 20 is connected through a push rod 22 to a detent mechanism generally designated 24.
- the detent mechanism 24 includes a latch 26 and a latch plate 28.
- the detent latch plate 28 is secured to the base member 16 and includes an interior cutout or open portion, the upper end of which defines various detent notches, respectively designated “P" (Park), “R” (Reverse), “N” (Neutral), “D” (Drive), etc.
- the latch 26 takes the form of a lever, which is pivoted at its inner end at a pivot axis 29 formed near an inner wall of the yoke 14.
- the lever of latch 26 extends from axis 29 outward through a vertical slot 30 formed in the opposite wall of the yoke 14 for generally vertical reciprocation into and out of detenting engagement with the detent notches P, R, N, D, etc.
- a spring 32 is connected between the yoke 14 and the latch 26 for biasinq the latch in an upward direction.
- the bias force of spring 32 similarly acts to bias the pushbutton 20 and the connecting rod 22 into their non-actuated positions shown in FIG. 1.
- the bias force of spring 32 is relatively modest.
- a relatively light manual inward force of, for example, approximately six (6 lbs.) pounds on pushbutton 20 is operative to urge the push rod 22 downward, thereby pivoting the outer end of latch 26 downward in its slot 30.
- Such downward actuation of latch 26 is required to permit the shift lever 12 to be pivoted from the Park position to one of the other positions P, R, N, D, etc.
- P/L cam or member 34 operates in conjunction with the key lock cylinder 36 associated with ignition switch 36A (depicted in FIG. 8) and an associated ignition lock mechanism 38 to lock the latch 26 into the Park detent notch in yoke 14 under certain circumstances, and thereby lock the shift lever 12 and the entire shift control mechanism in that position.
- the P/L member 34 in the illustrated embodiment is mounted for pivotal movement about a pivot axis 35, as represented by a journal pin or rivet in the illustrated embodiment.
- the pivot axis 35 is fixed with respect to the base member 16 and is conveniently supported either directly or indirectly by the base member 16.
- the P/L member 34 may take the very general shape of a bellcrank having one upstanding arm 37 adapted to receive an actuating force and a second arm 39 adapted to engage the underside of the outer end of latch 26 for urging the latch upwardly into a locked position within the Park detent notch.
- the P/L member 34 includes an arcuate slot 40 extending for much of the length of its arm 39 to provide a cam surface.
- a cam pin 42 is in fixed engagement with the sidewall of the yoke 14 of shift lever 12 and extends outward through the cam slot 40.
- the positioning of the cam pin 42 and the contour of the cam slot 40 are such that, as the shift lever 12 is pivoted between the various operating positions, the arm 39 of the P/L member 34 is either caused to pivot away from locking engagement with latch 26, or conversely, is permitted to be drawn upward via arm 37 for such locking engagement.
- the P/L member 34 may be actuated into locking engagement with the latch 26 by means of a substantially inelastic or relatively inextendible, connecting line 44 (preferably in the form of a cable) connected in tension between the P/L arm 37 and the ignition lock mechanism 38.
- Cable 44 is typically a flexible but substantially inelastic wire, which is slidingly housed in a surrounding protective jacket 45.
- the jacket 45 is fixedly positioned at its end closest to P/L arm 37 by being clamped to support bracket 43 by clamping bracket 49.
- the support bracket is rigidly affixed to, and may be an integral part of, base 16.
- P/L arm 37 may include, as illustrated, a slot 46 extending in from one edge and into which the cable 44 is placed.
- a head 47 on the end of the cable 44 serves to transmit a tensile force on the cable to the arm 37 and further resists dislodgement of the cable from the slot 46.
- the ignition lock mechanism 38 associated with key lock cylinder 36 is depicted in a generalized, diagrammatic form herein.
- the key lock cylinder 36 is in toothed engagement with a rack 48 connected to a slide 50.
- the ignition lock mechanism 38 further includes a bell crank type lock member 53 pivotally mounted on pivot axis $4 and biased by spring 56 to a withdrawn or retracted position depicted in FIG. 1.
- spring 56 is depicted for simplicity as a tension spring, it could also be provided in the form of a torsion spring or the like.
- a notch 58 is provided in the upper surface of slide 50 and is of such depth and positioning that when key lock cylinder 36 is rotated clockwise to the on position depicted in FIG. 2, the slide 50 moves to the right and brings notch 58 into alignment with the end of lock member 53, thereby allowing clockwise rotation of the lever against its biasing spring 56 in the event a superior tensioning force is applied to the downstream end of the cable 44.
- Such superior force may be applied by the latch lever 26 in response to the manual actuation of pushbutton 20, which requires a force of, for example, about ten (10 lbs.) pounds to overcome the bias of springs 32 and 56. That situation is depicted in FIG. 2.
- the present invention further provides a brake/shift interlock, which is capable of continuing to maintain the shift control mechanism 10 in the Park position, even when the key lock cylinder 36 is in the Run position commensurate with the engine running, and may be released principally only when a brake pedal is actuated to apply the vehicle's brakes.
- the present invention provides secondary or failure-mode means for releasing the P/L member 34, even in the event that the actuation of the vehicle's brakes does not result in the normal and desired response.
- the brake/shift interlock is provided with an improved electromagnetic actuator, such as the exemplary solenoid 160, operating through a connecting means, such as the cable 44, to either lock or relatively release the P/L member 34 when the shift lever 12 is in the park position.
- an improved electromagnetic actuator such as the exemplary solenoid 160
- a connecting means such as the cable 44
- the solenoid 160 includes an internal .Iadd.movable member such as an .Iaddend.armature or plunger 162, which engages the cable 44 in a manner resulting in the cable and the plunger moving in unison relative to the solenoid during the operation of the solenoid.
- the solenoid 160 typically is mounted in a fixed position within the vehicle, as represented by the bracket 61 in FIG. 1.
- the solenoid 160 includes a generally tubular, outer housing 164, in which is fixedly positioned a coil assembly 165 comprised of a central, cylindrical shell 166 and an insulated spool 168, on which is wound a conventional, multi-turn electrical coil 167.
- the coil assembly 165 and the housing 164 include a coaxial, central opening extending therethrough forming a hollow core.
- a tubular, electromagnetic, stop member 169 is inserted and fixed in one end to the housing 164, as by, for example, being press-fitted and/or in bonded engagement therewith.
- .Iadd.Stop member 169 is further defined by a nominal tubular body 301 with a flange 303 extending outwardly thereabout. As is shown in the Figures, flange 303 is disposed between an end of housing 164 and spool 168.
- Stop member 169 also has a first stop bore 305 and a coaxial second stop bore 307 wherein first stop bore 305 has a larger diameter than second stop bore 307..Iaddend.
- the plunger 162 is tubular, having a stepped, hollow core 171/172 (or other form of axial opening) extending centrally, axially therethrough, with a central axis coincident with the hollow core of the coil assembly 165 and the housing 164.
- the plunger 162 is sized to reciprocate within the hollow core of the coil assembly 165 at the end opposite to that in which the stop member 169 is positioned, Which may be termed the "distal end" of the solenoid, i.e., distal to the axially movable plunger.
- the brake/shift interlock solenoid 160 preferably includes a first, smaller diameter, axial opening 171 through the solenoid plunger 162 and a second, back, counter-bored, larger diameter, axial opening 172 though the back end of the plunger (and the stop member 169), into which larger opening an inclined, seating surface 170 is provided.
- the smaller lateral dimension of the seat 170 provided by the opening 171 is exposed to the exterior "E" at the distal end (step 169 end) of the solenoid by the larger dimension provided by the openings 172/172A being present from the distal end of the solenoid all the way to the seat.
- the openings 171, 172 in combination provide an overall axial opening formed by the two, in-line, cylindrical, axially coincident, axial openings of different diameters or lateral dimensions, with a relatively larger lateral dimension at its end distal to the plunger 162 (not openings 172/172A) and a relatively smaller lateral dimension at its other end (not opening 171).
- the stepped, axial opening through the plunger 162 could effectively be formed with only one, uniformly dimensioned, cylindrical opening through the plunger, as long as the lateral dimension or diameter of the axial opening 172A in the stop member 169 was larger.
- the relatively smaller diameter opening 171 would extend all the way through the plunger 162.
- the seat formed by the stepped, axial opening would then be the side, end face or side, end surface facing the distal end of the solenoid, which side, end surface would be exposed through the opening 172A to the outside of the solenoid to be engaged by the laterally extended member affixed on the cable.
- engagingly interfacing with the seat 170 is a laterally extended, mushroomed-shaped, button member 173 fixedly attached to the cable by, e.g., being staked to it during manufacture.
- the exterior, lateral dimensions of the button member 173 are less than the diameter of the larger opening 172, allowing it to enter the openings through the "rear" of the solenoid 160, but greater than the diameter of the smaller, front opening 171, so that it can not pass into or through it.
- the rounded or hemispheric shape of the head of the button member 173 provides for good interfacing with the inclined, radial step of the seat 17D formed by the difference in the diameters of the radial openings 171/172.
- the plunger 162 effectively interfacingly engages the cable 44 through the button member 173, so that the plunger, being in interfacing engagement with the connecting line, and connecting cable move in unison at least in the operatively necessary direction(s) and under the operatively necessary conditions relative to the housing 164 of solenoid 160.
- FIG. 4 depicts the solenoid 160 in its energized state or at least in its spring biased state, in which the plunger 162 is either electromagnetically drawn and/or spring biased axially inward
- FIG. 5 depicts the solenoid in its de-energized state with a riqhtwardly directed, pulling force being applied to the cable 44 sufficient to overcome the biasing force of the spring 174.
- the plunger 162 moves relatively outward (rightward) to the position depicted in FIG. 5.
- the cable button member 173 which is fixedly attached to the cable 44 by the cable manufacturer by, for example, staking the button member to the cable, can be inserted and slipped into a completely assembled solenoid 160, through the back, larger diameter opening or counter bore 172.
- FIG. 8 Exemplary Power Circuitry
- FIG. 8 there is depicted a generalized schematic diagram of the power circuit into which the ends 167A and 167B of coil 167 of solenoid 160 are connected.
- Battery voltage of twelve to fourteen (12-14) volts (V+ batt ) is applied to an input terminal of ignition switch 36A.
- the output terminal of ignition switch 36A extends through a fuse 75 and a steering diode 76 to one terminal 167A of the coil of solenoid 160. In this way, when ignition switch 36A is closed to the Run position, V+ batt is applied to terminal 167A of the solenoid 160.
- the other terminal 167B of the solenoid 160 is connected to a junction 78, to which is also connected one terminal of a brake lamp so, having its other terminal connected to ground. Also connected to the junction 78 is one terminal of a normally-open brake switch 82, which has its other terminal connected through a fuse 83 to the battery supply potential, V+ batt .
- Stop lamp 80 may be the conventional high level stop lamp on present day cars.
- left and right stop lamps 84 and 85 respectively, may also have one terminal connected to the junction 78 and the opposite terminal connected to ground.
- Left and right stop lamps 84 and 85 may be connected to junction 78 through a multi-function switch block 86 of conventional design, which may additionally provide the well known turn signalling and hazard signalling functions.
- a suppression diode 87 spans the terminal 167A, 167B of the coil of solenoid 160.
- the brake switch 82 may be of the type conventionally found in automobiles for closing an electrical circuit between V+ batt and the various stops lamps 80, 84 and 85 when the operator depresses the brake pedal to actuate the brakes.
- the battery voltage V+ batt is fed to the solenoid 160, and the solenoid is energized by completion of the path through any of the brake lights 80, 84, 85. Since only about, for example, three hundred (300) milliamperes of current is drawn by the solenoid 160, brake lights 80, 84, 85 do not illuminate.
- the plunger 162 With the coil of the solenoid 16 so energized, the plunger 162 will be held relatively inward to apply a tensile force to the cable 44, as it extends from the solenoid to P/L member 34 of the shift control mechanism 10.
- the tensile force on cable 44 applied by the magnetic field of solenoid 160 holds p/L member 34 in the position depicted in FIG. 1 and thus locks latch 26 in the Park detent position, despite the fact that the key lock cylinder 36 is in the Run position and clockwise rotation of the lock member 53 might otherwise have been permitted.
- V+ batt potential is placed on the brake light circuit at junction 78, which thus also places that same potential on terminal 167B of the solenoid 160. Since substantially the same potential, V+ batt , then appears on both terminals 167A and 167B of the solenoid 160, the solenoid will be de-energized, thereby releasing the plunger 162 and allowing normal shift operation as depicted in FIG. 2.
- cam pin 42 When the shift lever 12 is in one of the other non-Park positions as depicted in FIG. 3, the placement of cam pin 42 with respect to the cam slot 40 is such as to hold the P/L arm 34 out of locking engagement with the latch 26. Cam pin 42 holds P/L member 34 in position, despite the solenoid 160 being substantially continuously energized and applying a clockwise torque to member 34 via its connection through cable 44 to arm 37.
- the solenoid 160 will be de-energized each time the brake is depressed and the brake switch 82 is closed, it will only operate to lock the shift control mechanism 10 in position if the shift lever 12 is in the Park position. Moreover, no noticeable noise resulting from actuation and de-actuation of the solenoid 160 will be heard in any position of the shift control mechanism 10.
- FIGS. 6 and 7 Attention is now directed to an alternate embodiment of the brake/shift interlock, as depicted in FIGS. 6 and 7.
- FIGS. 6 and 7 Attention is now directed to an alternate embodiment of the brake/shift interlock, as depicted in FIGS. 6 and 7.
- the parts identical to parts previously described in connection with the embodiment of FIGS. 1-3 will bear the identical reference numerals.
- FIGS. 1-3 which employed the solenoid construction of FIGS. 4 and 5, depicted the ignition lock mechanism and the brake/shift interlock as being arranged mechanically in series.
- FIGS. 6 and 7 depicts those two locking functions as being arranged mechanically in parallel.
- the arm 137 of P/L member 134 is depicted as being widened and having a pair of slots 46 and 146 for respectively receiving flexible cables 44 and 144, although the single slot 46 of P/L member could be used for both cables. . .Cable.!. .Iadd.First cable .Iaddend.144 is slidingly housed in the jacket 45 and is connected to the conventional ignition lock mechanism 38 depicted in FIG. 1.
- the solenoid is completely omitted from the mechanical link between the ignition lock mechanism and the P/L member 134.
- a solenoid 160A is mounted to a support bracket 143 by means of a clamping bracket 149, which also supports the end of cable jacket 45.
- the solenoid 160A preferably may be identical to solenoid 160 of FIGS. 4 and 5, but also may typically be of a more standard configuration, in which the plunger (not shown) need not be hollow or have an axial opening through it but simply include means for connecting the flexible cable 144 to the outermost end thereof.
- the interconnecting engagement principles between the .Iadd.second .Iaddend.cable 44 and the plunger 162 of the solenoid 160 are preferred for the second embodiment as well.
- the solenoid 160A may be connected in the brake light power circuit in the same manner as previously depicted and discussed with respect to FIG. 8.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims (25)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/178,047 USRE35772E (en) | 1988-06-13 | 1994-01-06 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/206,255 US4887702A (en) | 1988-06-13 | 1988-06-13 | Brake/shift interlock for an automatic transmission shift control mechanism |
US07/440,554 US5027929A (en) | 1988-06-13 | 1989-11-20 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
US07/614,415 US5078242A (en) | 1988-06-13 | 1990-12-24 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
US08/178,047 USRE35772E (en) | 1988-06-13 | 1994-01-06 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/440,554 Division US5027929A (en) | 1988-06-13 | 1989-11-20 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
US07/614,415 Reissue US5078242A (en) | 1988-06-13 | 1990-12-24 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE35772E true USRE35772E (en) | 1998-04-21 |
Family
ID=23749221
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/440,554 Expired - Lifetime US5027929A (en) | 1988-06-13 | 1989-11-20 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
US08/178,047 Expired - Lifetime USRE35772E (en) | 1988-06-13 | 1994-01-06 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/440,554 Expired - Lifetime US5027929A (en) | 1988-06-13 | 1989-11-20 | Solenoid system for, for example, a brake/shift interlock for vehicular transmission control |
Country Status (4)
Country | Link |
---|---|
US (2) | US5027929A (en) |
EP (1) | EP0429193B1 (en) |
DE (1) | DE69011476T2 (en) |
ES (1) | ES2062405T3 (en) |
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US6431339B1 (en) * | 1999-07-29 | 2002-08-13 | Grand Haven Stamped Products, Division Of Jsj Corporation | Transmission shifter with lever-position locking device |
US6533705B1 (en) * | 1999-03-23 | 2003-03-18 | ZF Lemförder Metallwaren AG | Shifting device for the gearbox of a motor vehicle |
US6817966B2 (en) | 2002-08-29 | 2004-11-16 | Visteon Global Technologies, Inc. | Brake shift Interlock system with a single park position switch |
US6913104B2 (en) | 2003-02-26 | 2005-07-05 | Mtd Products Inc | Shift interlock mechanism |
US20080093194A1 (en) * | 2006-10-24 | 2008-04-24 | Vermeersch Michael C | Brake-transmission shift interlock assembly |
US7913583B2 (en) | 2006-06-28 | 2011-03-29 | Nexteer (Beijing) Technology Co., Ltd. | Transmission shift control mechanism and method of installation |
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US5167308A (en) * | 1991-01-17 | 1992-12-01 | Grand Haven Stamped Products, Div. Of Jsj Corporation | Combination brake/park lockout and steering mechanism and system |
US5211271A (en) * | 1991-01-17 | 1993-05-18 | Grand Haven Stamped Products Company, Div. Of Jsj Corp. | Lockout mechanism and system for vehicle shifter |
US5677658A (en) * | 1993-05-18 | 1997-10-14 | Grand Haven Stamped Products, Div. Of Jsj Corp. | Electrically operated control module for a locking mechanism |
GB2298465B (en) * | 1993-11-05 | 1997-10-29 | Rover Group | A selector mechanism for a vehicle transmission |
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US5489246A (en) * | 1994-08-29 | 1996-02-06 | Pontiac Coil, Inc. | Electronic park lock |
US5511641A (en) * | 1994-11-21 | 1996-04-30 | Chrysler Corporation | Mechanical brake interlock mechanism for a column-mounted shift control assembly |
ES2120321B1 (en) * | 1995-02-23 | 1999-05-01 | Fico Triad Sa | DEVICE FOR LOCKING THE LEVER FOR AUTOMATIC SPEED CHANGE OF AUTOMOBILE VEHICLES. |
US5588514A (en) * | 1995-05-15 | 1996-12-31 | Chrysler Corporation | Steering column mechanical brake interlock system |
US5729187A (en) * | 1995-12-01 | 1998-03-17 | Pontiac Coil, Inc. | Transmission shift interlock |
US5842364A (en) * | 1996-06-21 | 1998-12-01 | Oliver; Richard D. | Vehicle immobilizing system |
US5862899A (en) * | 1997-03-10 | 1999-01-26 | Ut Automotive Dearborn, Inc. | Brake-shift interlock |
US5933067A (en) * | 1997-06-10 | 1999-08-03 | Harrow Products, Inc. | Universal solenoid actuator |
US5969431A (en) * | 1997-10-08 | 1999-10-19 | Lear Automotive Dearborn, Inc. | Linearly actuating multi-functional apparatus for use in an automotive vehicle |
US5938562A (en) * | 1998-02-17 | 1999-08-17 | Pontiac Coil, Inc. | Brake shifter interlock with improved park lock switch |
US6241068B1 (en) | 1999-11-15 | 2001-06-05 | Teleflex Incorporated | Shift lever assembly with a pre-load releasable interlock |
US6755284B2 (en) * | 2001-05-24 | 2004-06-29 | Ventra Group Inc. | Electrically driven parking brake actuation assembly |
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US6676564B2 (en) | 2002-01-18 | 2004-01-13 | Saia-Burgess Inc. | Brake-shift lever interlock unit |
KR100461836B1 (en) * | 2002-07-03 | 2004-12-17 | 기아자동차주식회사 | Shift locking apparatus for automatic transmission of vehicle |
US6848545B2 (en) * | 2002-07-31 | 2005-02-01 | Ventra Group Inc. | Brake actuation assembly for a vehicle |
JP4064844B2 (en) * | 2003-03-14 | 2008-03-19 | カルソニックカンセイ株式会社 | Shift lever mounting structure |
DE102008041374A1 (en) * | 2008-08-20 | 2010-02-25 | Zf Friedrichshafen Ag | Selector lever with actuatoric position change |
DE102010063257A1 (en) * | 2010-12-16 | 2012-06-21 | Siemens Aktiengesellschaft | signal box |
JP5872271B2 (en) * | 2011-12-07 | 2016-03-01 | 株式会社東海理化電機製作所 | Shift device |
US9638239B2 (en) * | 2015-06-30 | 2017-05-02 | Motion Pro, Inc. | Cable lubrication device |
KR20200113317A (en) * | 2019-03-25 | 2020-10-07 | 현대자동차주식회사 | Device for preventing vehicle theft |
US11619076B2 (en) * | 2020-10-29 | 2023-04-04 | Inteva Products, Llc | Cable return assist assembly for vehicle latch mechanism |
US11808347B2 (en) | 2021-08-31 | 2023-11-07 | Deere & Company | Automatic park lock |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6533705B1 (en) * | 1999-03-23 | 2003-03-18 | ZF Lemförder Metallwaren AG | Shifting device for the gearbox of a motor vehicle |
US6431339B1 (en) * | 1999-07-29 | 2002-08-13 | Grand Haven Stamped Products, Division Of Jsj Corporation | Transmission shifter with lever-position locking device |
US6817966B2 (en) | 2002-08-29 | 2004-11-16 | Visteon Global Technologies, Inc. | Brake shift Interlock system with a single park position switch |
US6913104B2 (en) | 2003-02-26 | 2005-07-05 | Mtd Products Inc | Shift interlock mechanism |
US7913583B2 (en) | 2006-06-28 | 2011-03-29 | Nexteer (Beijing) Technology Co., Ltd. | Transmission shift control mechanism and method of installation |
US20080093194A1 (en) * | 2006-10-24 | 2008-04-24 | Vermeersch Michael C | Brake-transmission shift interlock assembly |
US8602194B2 (en) | 2006-10-24 | 2013-12-10 | Steering Solutions Ip Holding Corporation | Brake-transmission shift interlock assembly |
Also Published As
Publication number | Publication date |
---|---|
DE69011476T2 (en) | 1994-12-08 |
EP0429193A3 (en) | 1992-09-30 |
EP0429193B1 (en) | 1994-08-10 |
US5027929A (en) | 1991-07-02 |
DE69011476D1 (en) | 1994-09-15 |
ES2062405T3 (en) | 1994-12-16 |
EP0429193A2 (en) | 1991-05-29 |
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Legal Events
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