CN1975212A - Transmission auxiliary unit shift inhibitor - Google Patents

Abstract

An embodiment provides a shift inhibitor apparatus for a multiple speed transmission main section. The transmission includes an input shaft and an output shaft The transmission main section has a plurality of selectively engageable ratios. The transmission also has a range section shiftable between a range high ratio and a range low ratio. The shift inhibitor includes an interlock moveable between a locked condition and a released condition, wherein the interlock selectively prevents a gear shift in the transmission main section. The shift inhibitor also includes a range sensor valve. The range sensor valve selectively detects a range shift of the range section. The range sensor valve selectively causes the interlock to be positioned in the released condition upon detection of a completed range shift. The interlock is selectively positioned by a fluid.

Description

Transmission auxiliary unit shift inhibitor

The related application of reference

It is on November 22nd, 2004 that the application requires the applying date, and application number is the preference of 60/630174 temporary patent application, here in conjunction with the full content with reference to this application.

Technical field

The present technique field generally speaking be used for the composite transmission slave part, especially for the pneumatic control of gear type (range type) composite transmission and the control system of interlock system gear shift.

Background technique

Gear type or composition file bit per minute are widely known by the people as prior art from the type composite transmission.These speed changers generally include a how fast basic trnasmission part that links to each other greater than the gear type slave part sequence of basic trnasmission part resultant gear ratio scope with the gear ladder.

In this type of speed changer, its principal part is usually by coming gear shift by the mode of the gear shift frame set of manually operated shift level or analog control.Different therewith is that auxiliary-range partly passes through the mode gear shift of a button or switch.In the prior art, long-range servo valve/starting mechanism of switch control by the operation of principal part gearshift mechanism.This valve/starting mechanism control gear is selected the operation of starter.Gear selects cylinder to comprise a fluid-operated piston, and this piston starting cylinder is divided into low-grade location and high tap position cylinder body.Piston is according to the selection pressure in the cylinder body and second cylinder body carried out exhaust mobile the time.Because the gear part has been utilized synchronous rachet clutch usually, preferably when basic trnasmission partly is in neutral gear, gear gear shift starts and finishes, thereby an acceptable shift quality is provided and has prevented unsuitable wearing and tearing of synchronous rachet clutch and/or damage.

Composition file bit-type speed changer in the prior art generally includes a control system, is typically an atmospheric control with interlock, allows to utilize a selector button or switch to realize the pre-conversion of gear at main control valve.For preventing the damage of rachet clutch, control system has prevented the startup of gear shift, partly shifts into or at least towards the neutral position gear shift up to basic trnasmission.A kind of method that prevents that gear shift from starting is to utilize the mechanical-type interlock that is positioned on the gear part starting mechanism connecting rod, from physically preventing the motion of gear part range fork, arrives neutral position up to the principal part gear shift.The method that gear shift starts from being to utilize logic-based type interlock in second kind of just more commonly used preventing, a defective valve that pressure fluid is provided in giving gear part cylinder body, or do not provide pressure fluid to shift into the principal part neutral gear, or only when being shifted into and remain on neutral position, principal part is driven and provides pressure fluid up to detecting.The example of this speed changer and control system can be with reference to U.S. Patent No. 2654268,3138965, and 4060005 and 4974474.

System of the prior art is focussed in particular at gear and raises, or protection gear synchronizer when accelerating to high tap position.The cooperation timely that has been found that relative principal part gear shift in some system may more successfully realize the high tap position gear shift.In these speed changers, urgently be desirable to provide a kind of mechanism that protects the low-grade location synchronizer.

Summary of the invention

An embodiment provides a kind of multi-speed transmission principal part shift inhibitor device.This speed changer comprises an input shaft and an output shaft.This speed changer principal part has a plurality of alternative engagement ratios.This speed changer also have one can gear shift between transmission ratio gear and low gear ratio gear the gear part.This shift inhibitor comprises an interlocking mechanism that can move between locked position and release position, wherein this interlocking mechanism optionally prevents the gear shift in the speed changer principal part.Shift inhibitor also comprises a gear transducer valve, and this gear transducer valve is optionally surveyed the transforming gear of gear part.This gear transducer valve optionally is positioned at the release position with interlock after finishing detecting transforming gear.This interlock is optionally located by fluid.

In one embodiment, provide a shift inhibitor device for the multi-speed transmission principal part.This shift inhibitor comprises an interlock that can move between locked position and release position.This interlock optionally limits the rotation of gear-changing component under lock condition, prevent the gear graduation of speed changer principal part thus.This shift inhibitor also comprises a gear transducer valve.This gear transducer valve is optionally surveyed the transforming gear of gear part.The gear transducer valve optionally makes interlock be positioned at the release position after detecting the transforming gear end.

Another embodiment provides a kind of method of forbidding gear shift in the multi-speed transmission principal part.This method comprised the detection gear partly mesh than and prevent the principal part gear shift.These prevent step onset after having used working fluid.

Description of drawings

Fig. 1 is the composite transmission that has gear type slave part and utilized atmospheric control, the sketch of disproportion.

Fig. 2 is the sketch of the outer member of gearbox selector among Fig. 1.

Fig. 3 is the gear shift casing member of principal part of speed changer among Fig. 1 and the sketch of gear starter assembly.

Fig. 4 be among Fig. 1 with the transmission main shaft assembled together the backsight/left side of gear shift frame set look/perspective view of top view direction.

Fig. 5 is that the perspective view of direction is looked/looked up on the backsight/left side of shifting of transmission frame set and selector mechanism among Fig. 1.

Fig. 6 is the perspective view of the shaft assembly of speed changer principal part among Fig. 1.

Fig. 7 is the sketch of speed changer gear shift brake gear of arrow 7 directions in Fig. 4 among Fig. 1.

Fig. 8 is the sketch of shifting of transmission pattern among Fig. 1.

Fig. 9 be among Fig. 5 selector mechanism along the perspective exploded view of general direction among Fig. 4.

Figure 10 is the partial view that part is amplified in the circle 1O among Fig. 9.

Figure 11 is along the sectional view of the selector mechanism of Fig. 9 center line 11-11 direction, has shown two pressure switches.

Figure 12 A, 12B, 12C and 12D are the phantoms along the selector mechanism of Figure 11 center line 12-12 direction, have shown the position of typical relative component in the operating process.

Figure 13 is and 12A 12B, the phantom of the similar selector of 12C and 12D mechanism.

Figure 14 is a typical transmission gear part embodiment's a phantom.

Figure 15 is the canonical schema that first embodiment's gas is supplied with route.

Figure 16 is the canonical schema that second embodiment's gas is supplied with route.

Figure 17 is the canonical schema that second embodiment's gas is supplied with the element on the route cross section relevant with some.

Figure 18 is the canonical schema that the 3rd embodiment's gas is supplied with the element on the route cross section relevant with some.

Figure 19 is the schematic representation of shift mode.

Specific embodiment

With reference to the accompanying drawings 1,2 and 3, shown a gear type composite transmission 10.Composite transmission 10 comprises a how fast basic trnasmission part 12 that connects together with gear type slave part 14.Speed changer 10 is installed in the housing (not shown), and comprise one by prime mover, for example diesel engine E is by the input shaft 16 of a main friction clutch C driving that optionally separates but mesh together usually, this clutch has with engine crankshaft 20 and connects together, and by the input or the drive part 18 of its driving, and drive part 22 that is rotatably mounted on the transmission input shaft 16.

In principal part 12, input shaft 16 is being with input gear 24 to drive a pair of intermediate shaft assembly 26 with essentially identical rotating speed simultaneously.Two intermediate shaft assemblies 26 are positioned at substantially the opposite side with the coaxial main shaft 28 of input shaft 16 on the contrary.Each intermediate shaft assembly 26 comprises one by bearing in the housing 32 and 34 jack shafts 30 that support.Each intermediate shaft assembly 26 has one group of countershaft- gear 38,40,42,44,46 and 48 that is fixed thereon and rotates thereupon.Round main shaft 28 a plurality of mainshaft gears 50,52,54,56 and 58 are arranged, and optionally, link rotations by sliding clutch release bearing sleeve 60,62 and 64 with main shaft 28 one at a time, this is to be widely known by the people in the prior art.Clutch release bearing collar 60 also can be used for input gear 24 and main shaft 28 are linked so that the direct driving relationship between input shaft 16 and the main shaft 28 to be provided.

Mainshaft gear 58 is reverse gears, meshes continuously with the mode of countershaft-gear 48 by traditional middle idle pulley (not shown).Also it should be noted that, although principal part 12 provides five kinds of selectable forward speed ratios, its minimum forward speed ratio, also promptly be connected to the speed ratio that main shaft 28 obtains by drive main spindle actuation gear 56, owing to always have so high gear reduction ratio, therefore be considered to low speed or " creeping " gear, and only when mal-condition issues motor vehicle, just use, in high speed change gear, do not use usually.Correspondingly,, have only four kinds of speed ratios to be utilized, therefore be classified as " 4+1 " principal part usually by 14 combinations of auxiliary-range part although principal part 12 provides five kinds of forward speed ratios.

Continue with reference to the accompanying drawings 1, auxiliary gear box gear part 14 comprises two essentially identical auxiliary intermediate shaft assemblies 74, comprised one respectively by bearing in the housing H 78 and the 80 auxiliary jack shafts 76 that support, two slave part countershaft- gears 82 and 84 that auxiliary jack shaft 76 drives on it rotate.Auxiliary countershaft-gear 82 keeps engagement and supports the latter with the gear input/principal part output gear 86 that is fixed on the main shaft 28.Slave part intermediate gear 84 keeps engagement with the slave part output gear 88 that is installed on the transmission output shaft 90.

Specifically with reference to the accompanying drawings 1 and 3, auxiliary gear box gear part 14 also comprises a synchronous dibit slave part ratchet clutch assembly 92.Ratchet clutch assembly 92 is by a gear range fork 94 (simultaneously shown in Figure 14) axially locating.Ratchet clutch assembly 92 rotating being fixed on the output shaft 90 are also rotated thereupon.When a gear part gear shift starting component 96 is used for the operation of composite transmission 10 low-grade locations gear 88 is connected to output shaft 90, or when direct or high tap position operation, gear 86 and main shaft 28 is connected on the output shaft 90, as following more detailed description.

With reference to figure 3-7, the gear shift of principal part 12 is described in more detail.Usually, clutch release bearing collar 60,62 and 64 is respectively by range fork 100,102 and 104 axially locating.Clutch release bearing collar 60,62 and 64 can be to have known synchronous or asynchronous double-action ratchet clutch type.In typical embodiment, clutch release bearing collar 60 and 62 is synchronous, and clutch release bearing collar 64 is asynchronous.

As shown in Figure 1, clutch release bearing collar 60,62 and 64 is three clutches, so they can be arranged in middle non-binding position by range fork 100,102 and 104 respectively, preceding binding site and back binding site.In the embodiment shown, preferably shown in Figure 4 and 5, range fork 100,102 and 104 is incorporated in the gear shift frame set 110 by integral body.Range fork 100,102 and 104 stretches out from gear shift frame set 110, and is as described below such, by selector mechanism 112 controls (preferably as Fig. 2, shown in 5 and 9) that are positioned at frame set 110 tops.Selector mechanism 112 is successively by driver's operation speed changer input device, or shift level 114 controls (as Fig. 2).Shift level 114 is connected in the selector mechanism 112 by a central gearshift lever connecting rod 116, and can be arranged to from selector 112 certain distance is arranged.In the embodiment shown, to have only one in the clutch release bearing collar 60,62 and 64 be combinative in preset time and principal part interlock (not shown) can be used to other clutch lock is fixed on neutral position.As following will the detailed description in detail, the user only needs independent shift level 114 of manual operation just can realize the gear shift of principal part 12 and gear part 14.

In the embodiment shown, shown in Fig. 2-8, main portion 12 is controlled by being contained in three shift rail 120,122 in the gear shift frame set 110 and 124 axial motion, and the operation of the shift level 114 that is undertaken by the selector mechanism 112 by intermediate distribution is simultaneously controlled.Arbitrary mechanism that three guide rail gear shift are arranged can use, and these mechanisms have more shift rail, or as the guide rail that has only that illustrates in the U.S. Patent No. 4621537.

Specifically with reference to the accompanying drawings 7, range fork 100,102 and 104 has the Lo-R of being used for respectively, the corresponding gear shift lock 130,132,134 of 1-2 and 3-4 gears (as Fig. 8).As described below, 5-6 gear shift lock 136 and 7-8 gear shift lock 138 provide high tap position gear ratio.Range fork 100 and whole gear shift lock 134 and 138 are fixed on the shift rail 124.Range fork 102 and whole gear shift lock 132 and 136 are fixed on the shift rail 122.Range fork 104 and whole gear shift lock 130 are fixed on the shift rail 120.As shown in Figure 7, when clutch release bearing collar 60,62 and 64 not in conjunction with the time, principal part 12 is positioned at neutral position.

With reference to the accompanying drawings 8, shown the shift mode 142 of speed changer 10 shift levels 114.Shift mode 142 has comprised a 3-4 travel position 144 and a 5-6 travel position 146.With reference to the accompanying drawings 7 and 8, gear shift lock 130 is corresponding to a Lo-R gear shift stroke.In other words, when shift level 114 was positioned at Lo-R gear shift travel position generally, shift level 114 can be put into the R shift pattern with shift level 114 along direction of advance.When shift level 114 was positioned at the R shift pattern, the principal part 12 of speed changer 10 was mainshaft gear 58 " reverse gear " positions, with " combination " position of clutch release bearing collar 64.Similarly, when shift level 114 was positioned at Lo-R gear shift travel position generally, shift level 114 can move into the Lo shift pattern along backward directions.When shift level 114 was positioned at the Lo shift pattern, the principal part 12 of speed changer 10 was positioned at " low speed ratio " position of main oilgear 56, and mainshaft gear 56 combines with clutch release bearing collar 64 simultaneously.Correspondingly, when shift level 114 was positioned at Lo-R gear shift travel position generally, speed changer 10 was positioned at Lo-R gear shift gear, and shift level 114 can be controlled with conversion gear shift lock 130.When shift level 114 is positioned at 1-2,3-4, when 5-6 and 7-8 travel position, shift level 114 is done same operation.Shift mode 142 also comprises a plurality of neutral positions, for example N1 and N2.As described below, when shift level 114 is positioned at neutral position N1, gear part 14 will be incorporated into a gear low speed ratio, when shift level 114 is positioned at neutral position N2, gear part 14 will be incorporated into a gear at a high speed than.

Preferably as shown in Figure 9, selector mechanism 112 has comprised that also optionally is arranged in a gear shift lock 130,132,134,136, the gear shift pin 140 in 138 on any.The motion of gear shift pin 140 has driven one and target gear engagement selected in these gear shift locks.The motion control of change lever 114 position of gear shift pin 140.

In this exemplary embodiments, selector mechanism 112 has also comprised a position switch 150.An embodiment who has shown position switch 150 among Fig. 9, the possible position of a position switch 150 of existence in the shift mode of speed changer 10.Make it to be incorporated into selector mechanism 112 by operating position switch 150 and control gear shift auxiliary or the gear part, this method is widely known by the people in the prior art.As shown in Figure 8, the selector mechanism 112 of preferred embodiment and gear shift frame set provide a kind of " two H " the type shift mode jointly.Position switch 150 is fluid type switches, in particular a pneumatic control switch.It is to be feature with the valve that position switch 150 is recommended.Position switch 150 has one and has replaced plunger 152 (not shown) of valve in the valve body.Position switch 150 delivery vehicles give gear part gear shift starting component 96 to cause that this pneumatic control switch also is widely known by the people in the gear shift between low, the high tap position with pressed gas.

Position switch 150 sends signal and partly shifts into high tap position to gear, utilizes ratchet clutch assembly 92 that output shaft 90 is connected with main shaft 28, and gear shift pin 140 moves to 5-6 gear shift lock 136 from 3-4 gear shift lock 134.On the contrary, position switch 150 sends signal and shifts into the low-grade location part for gear part 14, and gear shift pin 140 moves to 3-4 gear shift lock 134 from 5-6 gear shift lock 136.Yet preferably operating a button or switch by the vehicle driver, to select change gear be interchangeable.Alternatively, also can use pattern as disclosed in the U.S. Patent No. 6339973 " repeat H ".All these layouts are widely known by the people in the prior art.It should be noted that the embodiment that suitable shift mode is not limited to here to be proposed.But the gear shift that has an important aspect to relate to how to limit principal part is with protection slave part synchronizer.

In addition, though shown in gear part 14 are two fast parts of having utilized straight-tooth or screw gearing, utilize have three or more selectable gear than and/or to have utilized the embodiment of gear type speed changer of the compound separation/gear type slave part of planetary type gear transmission unit also be understandable.As shown above equally, any one in the clutch release bearing collar 60,62 and 64 or a plurality of can be synchronous ratchet clutch type, and speed changer part 12 and/or 14 also can be independent jack shaft type.

As mentioned above, the user of vehicle or driver partly shift into low-grade location at the auxiliary gear box gear, but the demand that requires to finish the gear shift of basic trnasmission before auxiliary gear box shifts into low-grade location may increase.This situation will cause the gear piston to be used on the clutch ratchet by masterpiece of synchronizer generation, thereby cause wherein undesirable energy dissipation.

The embodiment of the selector mechanism 112 that is proposed here is the keys that prevent or reduce this class problem generation.Selector mechanism 112 provides such mechanism, and by it, the driver can control shift level 114 and laterally gear shift pin 140 is positioned on the gear shift lock of hope, and moves up gear shift pin 140 to be meshed with the principal part gear of expecting in front and back.The embodiment of selector mechanism 112 is presented among Fig. 9-13, and will be described in more detail in the back.Selector mechanism 112 has reduced before transforming gear finishes, and especially gear part 14 shift into gear 88 (low-grade location gear shift) finish before with the danger of principal part gear 12 engagements.

Preferably as shown in Figure 9, selector mechanism 112 also comprises a selector mechanism housing 160.Selector mechanism housing 160 plays the opening that covers gear shift frame set 110, supports the effect of other parts of selector mechanism 112 simultaneously.Housing 160 defines an elongated space 162, extends at length direction.The shift member of housing 160 rotating support arrangement in space 162, or shift shaft 164.Shift shaft 164 rotates around axis A-A.A collar portion 166 is fixed on axle and goes up and rotate thereupon.Collar portion 166 comprises above-mentioned gear shift pin 140, and combination surface, or cam face 168, and position switch 150 is installed in the front end of housing 160, optionally aims at collar portion 166, will be described in more detail this below.

Briefly also continue with reference to figure 9 with reference to figure 7-8, when gear shift pin 140 close 5-6 gear shift locks 136 or 7-8 gear shift lock 138, shift shaft 164 is positioned at the high tap position position, and is corresponding with the high tap position position shown in Fig. 8.

Selector mechanism 112 comprises that also a housing extension portion that is positioned at first end of housing 160 divides 170.Housing extension portion divides 170 to define a wider space 172.Wider space 172 is aimed at space 162 generally.Though extension 170 is separated with housing parts 160 and is fixed thereon in the illustrated embodiment, can reckon with that housing 160 has just comprised extension 170 when forming.The main cause that a discrete item is made in extension 170 can be used herein described in the embodiment, holds the existing housing 160 that does not have extension 170 features.Be fixed on housing extension portion by one and divide on 170, the end plate 176 relative with housing 160 makes space 162,172nd, sealing, or be partially enclosed at least.

With reference to the accompanying drawings 11, similar among the embodiment of selector mechanism 112 and Fig. 9 also comprises a two pressure switch 178, is similar to position switch 150.Two pressure switches 178 are similar to position switch 150, have a plunger 180.Should recommend two pressure switches 178 also is feature with the two-position valve, and directs high pressure fluids flows to starter assembly 96 under first situation, and the flow direction of guiding low-pressure fluid is to starter assembly 96 under second situation.A lock tab torus 182 is positioned on the axle 164 and keeps selling 184 by one and is fixed thereon, so lock tab torus 182 is as one man along with axle 164 motions.Two pressure switches 178 are optionally aimed at lock tab torus 182, will be described in more detail below.Lock tab torus 182 comprises a shift shaft bound fraction 186 and a camming surface 188.When two pressure switches 178 are aimed at lock tab torus 182, combine with camming surface 188.Camming surface 188 moves axially plunger 180 between the primary importance of relative axis A-A and the second place, therefore the two pressure switches 178 of circuit between the first control situation and the second control situation will be described in more detail below.

Figure 12 A-12D has shown the relative position of shift shaft 164 in the selector mechanism 112, and the relative position of lock piston bound fraction 198 with shift shaft bound fraction 186 has been described.Especially, Figure 12 A has shown that gear shift pin 140 is close, or the selector mechanism 112 when entering gear shift lock 130 low speed gear shifts.Figure 12 B has shown that gear shift pin 140 is close, or the selector mechanism 112 when entering 1-2 gear shift lock 132.Figure 12 C has shown that gear shift pin 140 is close, or the selector mechanism 112 when entering 3-4 gear shift lock 134.In addition, Figure 12 D has shown that gear shift pin 140 is close, or the selector mechanism 112 when entering 5-6 gear shift lock 136.Shown in Figure 12 A and 12D, lock piston bound fraction 198 can not interfere with shift shaft bound fraction 186 to prevent the rotation of shift shaft 164.Shown in Figure 12 B and 12C, lock piston bound fraction 198 can interfere with shift shaft bound fraction 186 to prevent the rotation of shift shaft 164.

Preferably as shown in figure 13, selector mechanism 112 embodiment also can comprise a principal part neutral gear interlock 190.Principal part neutral gear interlock 190 comprises a lock piston 192, be arranged in to be formed at housing extension portion and to divide 170, and aim at and cylinder body or interlock cylinder 194 with respect to two pressure switches 178 in.Lock piston 192 has a same axostylus axostyle 196 that extends towards axis A-A.Bar 196 have one with lock tab torus 182 on the complementary in shape lock piston bound fraction 198 of shift shaft bound fraction 186.Bar 196 slides to pass from cylinder chamber 194 in mesopore 200 and enters into shell space 162.Mesopore 200 increases by a spring intermediate hole part 202 at the end near cylinder chamber 194.Be arranged in that the wind spring 204 that resets is wrapped on the bar 196 in the mesopore 200.Spring 204 relative axis A-A deflection locked positions 192, and tend to make the lock piston bound fraction 198 on the bar 196 to combine with 186 releasings of shift shaft bound fraction.

An O RunddichtringO 206 is arranged in the groove of lock piston 192 peripheries.Seal ring 206 plays seal action during with respect to cylinder chamber 194 relative movement in lock piston 192 between the two.Lock piston bound fraction 198 and combining of shift shaft bound fraction 186 have prevented in some cases principal part 12 neutral gear that swaps out, and will be described in more detail below.

A locating stud 208 stretches out from the inboard of lock piston 192, is parallel to bar 196, and slidably is arranged in housing extension portion and divides in 170 in the hole 210 parallel with mesopore 200.The rotational alignment of lock piston bound fraction 198 relative shift shaft bound fractions 186 is being kept in locating stud 208 and hole 210 jointly.Preferably, shift shaft bound fraction 186 is slits parallel with axis A-A on the lock tab torus 182.

Preferably, lock piston bound fraction 198 has square end and combines with shift shaft bound fraction 186.Equally preferably, a plane parallel limiting with shift shaft bound fraction 186 generally of a plane limiting of lock piston bound fraction 198.By this way, when lock piston bound fraction 198 and shift shaft bound fraction 186 combine, will cause interference between these relative parallel planes if the driver wants to handle shift level 114, thereby reduce the wearing and tearing of lock piston bound fraction 198 and shift shaft bound fraction 186 combination surfaces.

Cylinder chamber 194 is closed by the cylinder body lid 212 that is positioned at its top, and lock piston 192 is contained in wherein.In one embodiment, lid 212 has one first cavity 214, is positioned at cylinder chamber 194 tops and also communicates with it.Lid 212 has an insert structure 216, and the passage 218 that intersects with cavity 214 is wherein arranged, and makes fluid therefrom to pass through and 212 outsides from cylinder chamber 194 to lid.Insert structure 216 is made into to hold a selected pipe or hose coupling.Stopper 220 with vent hole 222 is arranged in passage 218.The diameter of vent hole 222 is 0.040 inch in a preferred embodiment.Gas must pass through vent hole 222 when coming in and going out cylinder chamber 194.Lid 212 is clamped in housing extension portion by a plurality of bolts 226 and divides on 170.

Top cover 228 is positioned on the spring pawl biased plunger, can offer the driver and can feel shift feel between high tap position and the low-grade location.Bias spring, plunger and the auxiliary ring that is contained on the axle 164 are not very relevant for present embodiment, so do not illustrate on the figure.Axle 164 is not also illustrated in the drawings along the element that axis A-A is offset to the precalculated position.

Return with reference to figure 2,5 and 7-9, connecting crank 230 is clamped in the other end of axle 164 relative lock tab torus 182 place ends.Connecting crank 230 is connected on the shift level 114 by gear shift connecting rod 116.A circular fold seals type 232 seals between axle 164 relative housings 160 jointly with seal ring 236.Pilot control shift level 114 is done transverse movement makes axle 164 along the axis A-A axial motion, and gear shift pin 140 is at gear shift lock 130,132,134,136, corresponding transverse movement between 138.Seesawing of shift level 114 makes axle 164 rotate along axis A-A, thereby makes gear shift pin 140 seesaw.The seesawing of gear shift pin 140 makes a basis in range fork 100,102 and 104 seesaw before the beginning gear shift pin 140 at gear shift lock 130,132,134,136,138 position and moving.

It is recommendable that to be switch 150 can have different variations with 178 accurate shape with the position and do not exert an influence.For example, the electronic switch with electromagnet can be used to place of switches 150 and 178.In addition, switch 150 and 178 or its also can being positioned on other position relevant, of substituting for example at shift level 114 or on shift rail 120,122 and 124 with the action of principal part gear meshing.

Figure 14 understands gear part gear shift starting component 96 in more detail.Shown in the orientation, starter assembly 96 is in " height " gear positions, gear 86 is locked on the output shaft 90 by rachet clutch assembly 92.

Starter assembly 96 comprises a piston 240 and a cylinder shell 244.Connecting rod 246 is fixed on piston 240 on the gear range fork 94.Piston 240 is clamped in a shoulder place of connecting rod 246 by locking nut 248.Cylinder shell 244 has a through hole 250 makes connecting rod 246 to slide therein.Through hole 250 is towards cylinder piston chamber 252 openings, and piston 240 can slide in cylinder piston chamber 252.An O-ring seals 254 seals between piston 240 and piston cavity 252.Piston cavity 252 is sealed by the starter cover 256 that is positioned at piston cavity 252 tops, and piston 240 is contained in wherein.Housing 244 and lid 256 define a piston cavity at least in part, or gear chamber 260.

Piston 240 is divided into high tap position side 262 and low-grade location side 266 with piston cavity 260.The pressure of supply high tap position side 262 moves gear range fork 94 with in conjunction with rachet clutch assembly 92 and gear 86, and gear part 14 is shifted into the high gear ratio.The pressure of supply low-grade location side 266 moves gear range fork 94 with in conjunction with rachet clutch assembly 92 and gear 88, and mobile piston 240 is to the low-grade location situation and gear part 14 is shifted into low speed compare gear.

Gear transducer valve 270 is settled with connecting rod 246 conllinear, and gear transducer valve 270 has the plunger 272 that is promoted by connecting rod 246, show gear part 14 all be incorporated into low speed than gear or low speed than under the situation.Though in this case with Figure 14 in the orientation of element inconsistent, piston 240 can all enter into the right side of piston cavity 260.Gear transducer valve 270 detects the position or the engagement ratio of gear part 14 thus.As shown in figure 14, piston 240 is positioned at the left side of cavity 260, and 14 combinations of gear part are at a high speed than gear.

Continue with reference to the accompanying drawings 9,14, position switch 150 is on off switches, and wherein plunger 152 is offset to primary importance by spring.In primary importance, position switch 150 transmits the low-grade location side 266 that pressed gas is given starting piston cavity 260, high tap position side 262 exhausts of open simultaneously starting piston cavity 260.In the second place, position switch 150 transmits the high tap position side 262 that pressed gas is given starting piston cavity 260, low-grade location side 266 exhausts of open simultaneously starting piston cavity 260.Plunger 152 combines with the cam face 168 that is attached to sleeve part 166, makes position switch move between the primary importance and the second place.The axial motion of axle 164 makes gear shift pin 140 move to 5-6 gear shift lock 136 from 3-4 gear shift lock 134, causes plunger 152 to be moved to the second place.On the contrary, the axial motion of axle 164 makes gear shift pin 140 move to 3-4 gear shift lock 134 from 5-6 gear shift lock 136, causes plunger 152 to be moved to primary importance.

As following explanation, shown in the embodiment of shift inhibitor utilized the subelement of introducing at least here.In other words, shift inhibitor has comprised the part that is used in the speed changer 10 reducing when gear part 14 gear shift that principal part 12 is not expected during not at ideal position, will be described in more detail below.Before the gear shift of the gear part of expecting 14 finishes as yet, and under the situation that principal part 12 gear shift have been finished, gear part 14 is positioned at " neutral gear " ratio, and at this moment gear 86 and gear 88 all do not have to combine with rachet clutch assembly 92.Starter assembly 96 can not shift into gear part 14 gear ratio if gear part 14 is positioned at " neutral gear ratio ", speed changer 10 is positioned at " neutral gear ", though at this moment pilot control shift level 114 is to the gear of expectation, input shaft 16 can not combine (Fig. 2) with output shaft 90 yet.

With particular reference to Figure 13 and 15, will elaborate to first embodiment.In first embodiment, used starting component 96, principal part neutral gear interlocking 190 and position switch 150.Two pressure switches 178, camming surface 188 and gear transducer valve 270 are not used.As shown in figure 15, position switch 150 is attached to pressurized gas supply pipeline 300 and passes through a port or pipeline 302 exhausts.Position switch 150 also is attached to the high tap position side and is attached to high tap position side 266 by second gas line 306 by first gas line 304.As mentioned above, position switch 150 by gas supply pipe line 300 and exhaust line 302 with pipeline 304 and 306 and pressurized gas be tied.Neutral gear interlock 190 is connected to first gas line 304 by one the 3rd gas line 308.In this embodiment, do not use gear transducer valve 270.

The same with common gas line, exhaust line 302 is used for the gas in gear chamber 260 and interlocking chamber 194 and discharges.In other words, when exhaust line 302 was connected to first gas line 304, the gas in the gas line 304 and 308 had all been drained.Therefore, the interlocking chamber 194 that is communicated with fluid with gas line 308 and with gear chamber 260 that gas line 408 is communicated with fluid in the exhaust of gas start simultaneously basically, so gas is discharged in gear chamber 260 and interlocking chamber 194 at least in part simultaneously.

Continuation will be discussed to first embodiment's operation at this with reference to Figure 13 and 15.When position switch 150 was positioned at the low-grade location position, by breather line 306, pressed gas was fed to starter assembly 96, combined with gear part 14 in the low-grade location situation.The driver move shift level 114 from the 3-4 position to 5-6 position (as Fig. 8), cause that gear shift pin 140 moves to 5-6 gear shift lock 136, the motion of plunger 152 makes position switch 150 change to the high tap position position.When this made gas exhaust in the low-grade location side 266, pressed gas was transported to high tap position side 262 by first gas line 304.High tap position side 262 and first pipeline, 304 pressurizeds cause that lock piston 192 antagonistic springs 204 are offset towards axis A-A.Shown in Figure 12 D, lock piston bound fraction 198 is aimed at the 5-6 position of axle 164 discord shift shaft bound fraction 186.Because the time lag that hole 222 causes, as discussed above, piston moves to its full extended position, will not produce immediately with exerting pressure.

When (that is to say from 5-6 travel position 146 to 3-4 travel position 144) from 5-6 lock 136 downshifts to 3-4 lock 134, position switch 150 is by the starting (see figure 8), and lock piston bound fraction 198 slips into shift shaft bound fraction 186 (seeing Figure 12 C).Lock piston bound fraction 198 and the 186 such combinations of shift shaft bound fraction make the driver to combine with the principal part gear along fore-and-aft direction by mobile shift level.Simultaneously, because the action of position switch 150, gas line 306 pressurizeds, and gas pipeline 304 exhausts.But because the restriction in hole 222, the gas in the cylinder chamber 194 can not drain at once.Caused the delay of time accordingly, thereby made the driver can successfully finish the principal part gear shift.Suppose that predetermined line gas pressure is that 80psi (pound/square inch) and bore dia are about 0.4 inch, will cause about 0.8 second time lag.It preferably approximately is 1 second time lag.In case be approximately 1 second time lag, the driver just can shift into the gear of expectation.In most of the cases, find that to shift into the low-grade location time also be enough for finishing by starter assembly 96 for 0.8 second time lag.

With particular reference to accompanying drawing 14,16 and 17, second embodiment is illustrated.Here do not use hole 222, two pressure switch 178 and camming surface 188.212 needs of lid have the means of fixation that is used for gas line.As shown in figure 16, position switch 150 is connected to the exhaust line 352 of the first pressurized gas supply pipeline 350 and the mode by port or pipeline.Position switch 150 is connected to high tap position side 262 and is connected to low-grade location side 266 by second pipeline 356 by first pipeline 354 equally.Position switch 150, as described above, gas line 354 is connected with pressurized gas with 356 with exhaust line 352 by supply pipeline 350.The second pressurized gas supply pipeline 358 is connected on the gear transducer valve 270.Be connected on the neutral gear interlock 190 by the 3rd gas line 360 on the gear transducer valve 270.Gear transducer valve 270 has a gas exhaust port 362.Gear transducer valve 270 is on-off valves.In the situation of low-grade location, pressurized gas do not send gas line 360 to from gas supply pipe line 358 to starter assembly shown in the primary importance 96, make lock piston towards axis A-A skew (seeing Figure 17).When starter assembly shown in the second place 96 was positioned at the low-grade location position, gear transducer valve 270 stopped that pressurized gas send gas line 360 to from gas supply pipe line 358, and linked gas line 360 to exhaust port 362.

Second embodiment's operation is as described below.When position switch 150 is in the low-grade location position, the continuous manipulation of shift level 114 makes gear shift pin 140 aim at it, for example flow to starter assembly 96 by gas line 356, gear part 14 is placed the low-grade location position by 1-2 gear shift lock 132 or 3-4 gear shift lock 134 (seeing Figure 12 B, 12C) pressed gas.The driver controls shift level 114 and moves to the 5-6 position, causes that gear shift pin 140 moves to 5-6 gear shift lock 136, and position switch 150 is transformed into high tap position position (being promoted by camming surface 168 as plunger) simultaneously.Preferably as shown in figure 16, when position switch 150 was transformed into the high tap position position, the gas in the low-grade location part 266 will be discharged (by second gas line 356), and pressed gas offers to high tap position part 262 (by first gas line 354).After high tap position side 262 was pressed, simultaneously because the rachet clutch assembly combines (see figure 1) with main shaft 28, gear part 14 was transformed into the high tap position position to connecting rod 246 away from gear transducer valve 270 (seeing Figure 14).As previously mentioned, gear transducer valve 270 detects starter assembly 96 not when the low-grade location position, will cause pressed gas to be transported to gas line 360 from gas supply pipe line 358.

Gas line 360 pressurizeds (because gear shift pin 140 moves to 5-6 gear shift lock 136 from 3-4 gear shift lock 134) make pressed gas be delivered to neutral gear interlocking mechanism 190 from gear transducer valve 270.Because pressed gas enters neutral gear interlocking mechanism 190, the power of lock piston 192 antagonistic springs 240 is offset towards axis A-A.Preferably shown in Figure 12 D, when shift level 114 was positioned at the 5-6 position, lock piston bound fraction 198 was not aimed at or is not combined with shift shaft bound fraction 186.After pressed gas was by gas line 360 commutations, lock piston 192 will move to its complete extension immediately.

When the driver turned down shelves to 3-4 gear shift lock 134 from 5-6 gear shift lock 136, lock piston bound fraction 198 slipped into shift shaft bound fraction 186 (preferably as Figure 12 C), thereby neutral gear interlock 190 is moved to locked position.Because lock piston bound fraction 198 and 186 combinations of shift shaft bound fraction, along fore-and-aft direction move moving of shift level just be restricted (because the locked piston combining part of rotation of shift shaft 164 divide 198 and shift shaft bound fraction 186 between interference and limit).Because the limitation of movement of shift level 114, the driver can't be bonded to low-grade location with principal part 12 gears.Therefore, when lock piston bound fraction 198 and shift shaft bound fraction 186 in conjunction with after 1-2 gear shift lock 132 or 3-4 gear shift lock 134 just can't control and combine with gear.

Because shift level 114 moves to 3-4 gear shift lock 134 from 5-6 gear shift lock 156, position switch 150 is driven to low-grade location position (being promoted by camming surface 168 as plunger 152).After position switch 150 is by starting, gas line 356 pressurizeds, gas line 354 exhausts.Usually owing to the pressure in the gas line 360, the rotation of axle 164 continues to be restricted.When gear transducer valve 270 detects connecting rod 246, gear part 14 is located in low-grade location situation (by the reduction of plunger 272).The reduction of plunger 272 causes that gear transducer valve 270 carries out exhaust by 362 pairs of gas lines of exhaust port 360.

After gas line 360 exhausts, lock piston 192 away from axis A-A are promoted by spring 204, have therefore removed the combination of lock piston bound fraction 198 and shift shaft bound fraction 186, and neutral gear interlock 190 is placed the release position.Because lock piston bound fraction 198 has been removed and the combining of shift shaft bound fraction 186, the rotation of shift shaft 164 just is allowed to.The driver just can control shift level 114 along fore-and-aft direction, makes gear shift pin 140 move 1-2 gear shift lock 132 or 3-4 gear shift lock 134.When being moved for one in 1-2 gear shift lock 132 or the 3-4 gear shift lock 134, just can combine with principal part 12.

With particular reference to accompanying drawing 18, at least the 3rd embodiment has been carried out partly explanation.Here use two pressure switches (seeing Figure 13), do not used gear transducer valve 270 and principal part neutral gear interlock 190.As shown in figure 18, position switch 150 is connected to two pressed gas supply pipelines 386 and exhaust line 388.Exhaust line 388 can be the form of port or pipeline.Position switch 150 is connected to the high tap position side 262 of starting piston cylinder 260 equally via first gas line 390.Position switch 150 also is connected to the low-grade location side 266 of starting piston cylinder 260 via second gas line 392.As mentioned above, position switch 150 operationally is connected to two pressed gas by gas supply pipe line 386 and exhaust line 388 with gas line 390 and 392.Two pressed gas pipelines 386 are connected to two pressure regulators 394, thereby two pressed gas supply pipeline 386 obtains pressurized gas from two pressure regulators 394.The main gas supply pipe line 396 of pressurized gas is provided, is connected on first branch road 398 that links with two pressure regulators 394.Main gas supply pipe line 396 also is connected on two pressure switches 178 by second branch road 402 equally.Control gaseous pipeline 404 links together two pressure switches 178 and two pressure regulators 394.

Control gaseous pipeline 404 is by two pressure switch 178 exhausts, two pressure regulators 394 provide pressurized gas for two pressed gas supply pipelines 386, when control gaseous pipeline 404 during by two pressure switch 178 pressurizeds, two pressure regulators 394 provide low-pressure gas for two pressed gas supply pipelines 386.

Two pressure switches 178, primary importance as shown in Figure 18 stops that pressurized gas arrive two pressure regulators 394, allows the pressurized gas of about 80 pounds of/square inch (psi) pressure to send two pressed gas supply pipelines 386 to.In the unshowned second place, two pressure switches 178 carry pressurized gas to give two pressure regulators 394, thereby cause two pressure regulators 394 to be decreased to about 20psi from the gas pressure that first branch road 398 is delivered to two pressed gas supply pipelines 386.Figure 19 has shown preferred gear positions 410 in the shift mode 142, and wherein two pressure switches 178 make pressurized gas be supplied to starting component 96.

Be the 3rd embodiment's typical operation below.When the combination of 188 of plunger 180 and camming surfaces determined that principal part is positioned at neutral gear, two pressure switches 178 were sent signal and are given two pressure regulators 394, made whole pressure in-position switch 150 and arrive starting component 96.When principal part is in engagement (lock 1-2,3-4,5-6 or 7-8), two pressure switches 178 carry whole pressure to give two pressure regulators 394, and adjusting is supplied with the pressure of position switch 150 to 20psi thus.This low pressure is enough to after gear part 14 gear shift before principal part 12 shift ends are finished to keep the gear synchronizer of ratchet clutch assembly 92 to keep engagement, but also can be not greatly also imperfect tense damage the gear synchronizer of ratchet clutch assembly 92 to gear part 14 gear shift before principal part 12 shift ends.

Although two pressure regulators 394 are illustrated as single parts, preferably be accommodated in the single housing, two pressure regulators 394 can have an adjustable regulator to increase the pressure of relative gearshift position, two pressure regulators 394 can also be one and be parallel to high pressure line, comprise one can carry high pressure or regulate after pressure give the regulator of the three-position valve of piston cavity 260.

Recommendablely be, can use the first and the 3rd embodiment simultaneously in same speed changer, the 3rd embodiment provides a kind of second or backup measure of protecting ratchet clutch assembly 92 synchronizers.Figure 13 shows is the combination of two pressure switches 178 of first embodiment's principal part neutral gear interlock 190 and the 3rd embodiment.Although being described as, the 3rd embodiment has two pressure switches 178, when shift level 114 is in any neutral position, link the piston cavity 260 of high-pressure air source to gear shift starter assembly 96 gears part, two pressure switches also can be when having only shift level 114 to be positioned at position shown in Figure 19 gear 410, link piston cavity 260 and high-pressure air source, reduced shift level 114 thus and when not wishing 14 gear shift of gear part, resisted the neutral position of the pressure increase of gear piston 240.

Although the working fluid that uses in the illustrated embodiment is described to gas, this fluid also can be any suitable fluid that comprises liquid, is different from the situation of gas pressurized, and they are incompressible usually, and power or pressure can be made action at once to external world.In addition, also can use working fluid promoting piston, rotary rotor or provide any other liquid/gas can be converted to mechanical energy.In addition, although control signal described herein passes to device such as piston by the fluid such as gas, this control signal also can be transferred to suitable device by light, electricity or machinery type, though preferred control signal is by the transmission of movement of gas.

Explanation and description that the explanation of front is just carried out the exemplary embodiments of method and system of the present invention.Its purpose is both non exhaustive also non-to be intended to limit the invention to disclosed several concrete form.It will be understood by those skilled in the art that various variations and the replacement that is equal to of element is not exceeded scope of the present invention.In addition, under enlightenment of the present invention, do not exceed essential scope of the present invention for adapting to a lot of corrections that specific environment or material make.Therefore, its purpose is not to be intended to limit the invention to several specific disclosed embodiments, but because these embodiments are realization best way of the present invention of expecting, therefore present invention includes all embodiments that fall in the claim protection domain.The present invention can also be with other modes rather than the mode clearly explaining here and illustrate realize, and do not break away from the spirit or scope of the present invention.Protection scope of the present invention is only limited by following appended claim.

Claims (26)

1, a kind of shift inhibitor device (112) that is used for the principal part (12) of multi-speed transmission (10), speed changer (10) has comprised an input shaft (16) and an output shaft (90), the principal part (12) of speed changer (10) has a plurality of alternative engagements than (40,50; 42,52; 44,54; 46,56; 48,58); Speed changer (10) also have one can high tap position than 28/90 and low-grade location than the gear of 86/82/84/88 gear shift part (14), this shift inhibitor device (112) comprising:

One interlock (190) that can between locked position and release position, move, described interlock (190) selectively limits the motion of shift member (164), with the gear shift of the principal part (12) that stops speed changer (10); And

One gear transducer valve (270), described gear transducer valve (270) selectively detects the transforming gear of gear part (14), described gear transducer valve (270) is after detecting the gear shift end, optionally make described interlock (190) be positioned at the release position, wherein said interlock (190) is selectively located under the fluid effect.

2, device as claimed in claim 1 (112), wherein said interlock (190) selectively keep the principal part (12) of speed changer (10) to be in neutral position.

3, device as claimed in claim 1 (112), wherein said interlock (190) selectively allows the rotation of described shift member (164) when being positioned at the release position, allow the gear shift of the principal part (12) of speed changer (10) thus.

4, device as claimed in claim 1 (112), the part of wherein described at least shift member (164) turns selectively input shaft (16) and output shaft (90) is joined together, and the part of described at least shift member (164) can move axially, selectively with a plurality of gear shift locks (130,132,134,136,138) engage.

5, device as claimed in claim 1 (112), wherein said interlock (190) can not limit the motion of shift member (164) when shift member (164) is in the high tap position position.

6, device as claimed in claim 1 (112), wherein said interlock (190) selectively limits the rotation of shift member (164) when being in locked position.

7, device as claimed in claim 1 (112), wherein said shift member (164) comprises a gear shift pin (140), selectively with a plurality of gear shift locks (130,132,134,136,138) joint in, with selectively with described a plurality of selectable engagements than (40,50; 42,52; 44,54; 46,56; 48,58) joint in.

8, device as claimed in claim 1 (112), wherein said shift member (164) comprises a mating face, wherein said mating face selectively engages with position switch (150).

9, device as claimed in claim 8 (112), wherein said position switch (150) selectively transmit a control signal gives described interlock (190), and described interlock (190) is positioned locked position.

10, device as claimed in claim 9 (112), wherein said control signal is transmitted by fluid.

11, device as claimed in claim 1 (112), wherein said shift member (164) is manually controlled by the user of speed changer (10).

12, device as claimed in claim 1 (112), wherein the input device (114) of the independent speed changer (10) of user's manually-operable is selectively to engage each gear (40,50; 42,52; 44,54; 46,56; 48,58).

13, a kind of shift inhibitor device (112) that is used for the principal part (12) of multi-speed transmission (10), speed changer (10) has comprised an input shaft (16) and an output shaft (90), the principal part (12) of speed changer (10) has a plurality of alternative engagements than (40,50; 42,52; 44,54,46,56; 48,58); Speed changer (10) also have one can high tap position than 28/90 and low-grade location than the gear of 86/82/84/88 gear shift part (14), this shift inhibitor device (112) comprising:

One interlock (190) that can between locked position and release position, move, described interlock (190) selectively limits the rotation of shift member (164) when being positioned at locked position, stop the gear shift of the principal part (12) of speed changer (10) thus; And

One gear transducer valve (270), described gear transducer valve (270) selectively detects the transforming gear of gear part (14), described gear transducer valve (270) selectively makes described interlock (190) be positioned at the release position after detecting the transforming gear end.

14, device as claimed in claim 13 (112), wherein said interlock (190) selectively keep the principal part (12) of speed changer (10) to be in neutral position.

15, device as claimed in claim 13 (112), wherein said interlock (190) can not limit the motion of shift member (164) when shift member (164) is in the high tap position position.

16, device as claimed in claim 13 (112) has wherein also comprised a position switch (150), and described position switch (150) is selectively surveyed the pre-selected locations of described shift member (164).

17, device as claimed in claim 16 (112), wherein said position switch (150) selectively transmit a control signal gives described interlock (190), and described interlock (190) is positioned locked position.

18, device as claimed in claim 13 (112), wherein said shift member (164) is manually controlled by the user of speed changer (10).

19, device as claimed in claim 13 (112), wherein the input device (114) of the independent speed changer (10) of user's manually-operable selectively engages each gear (40,50; 42,52; 44,54; 46,56; 48,58).

20, the method for forbidding gear shift in a kind of principal part (12) in multi-speed transmission (10), wherein said speed changer (10) comprises an input shaft (16), one output shaft (90) and one can high tap position than 28/90 and low-grade location than the gear of 86/82/84/88 conversion part (14), and principal part (12) has a plurality of alternative engagement ratios, and this method may further comprise the steps:

Detect the engagement ratio of gear part (14), and

Prevent the gear shift of principal part (12), the described gear shift steps that prevents is by using the working fluid onset.

21, method as claimed in claim 20 wherein detects step and also comprises mechanically operating valve (270), makes valve (270) conversion hydrodynamic pressure.

22, method as claimed in claim 20 prevents wherein that step from also comprising and forbids flowing of fluid.

23, method as claimed in claim 20 wherein also comprises the step that allows principal part (12) gear shift, and wherein as the result who detects step, the gear shift of principal part (12) is allowed to.

24, method as claimed in claim 23 wherein prevents and allows step to realize by interlock (190).

25, method as claimed in claim 24, wherein interlock (190) selectively prevents the rotation of shift member (164), wherein said shift member (164) is manually operated by the driver.

26, method as claimed in claim 25, the part of wherein described at least shift member (164) optionally combines input shaft (16) and output shaft (90) rotationally, and the part of described at least shift member (164) can move axially, optionally engage a plurality of gear shift locks (130,132,134,136.138).

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