CN101451611B - Shift position detecting device for gear selection mechanism of automotive transmission - Google Patents

Abstract

The invention discloses a shift position detecting device for a gear selection mechanism of an automotive transmission. The shift position detecting device comprises a shift position sensor that continuously issues an output data that represents a shift position of the gear selection mechanism; and a control unit. The control unit includes a first shifting load instruction section that controls the shift actuator to shift the gear selection mechanism to the shift gear-in establishing position with a first shifting load; a second shifting load instruction section that, after completion of shifting of the gear selection mechanism to the lo shift gear-in establishing position by the first shifting load instruction section, controls the shift actuator to reduce the shifting load from the first shifting load to a second shifting load which is lower than the first shifting load; and a shift gear-in establishing position memory section that stores an output data is issued from the shift position sensor when the shift actuator is controlled by the second shifting load instruction section, as an information data that represents completion of shifting of the gear selection mechanism to the shift gear-in establishing position.

Description

The shift position detecting device of the discriminating gear of transmission for vehicles

Technical field

The present invention relates generally to be used for the shift position detecting device of transmission for vehicles; And in particular; Relate to be suitable for detecting automatically-manual transmission (automatic-manual transmission, (AMT)) wait in the shift position device of the shift position that occupies of the discriminating gear of use.

Background technique

In the manauto speed changer, the selection and the gear shift operation of manual transmission (MT) are all automatically carried out.

This automatically-one of manual transmission is open in Japanese publication application (Tokkai) 2007-040407.

In the speed changer of said open application, the speed (perhaps gear row) that is provided by speed changer is divided into some velocity group, and each velocity group is provided with the clutch that is used for importing separately engine revolution.The velocity group of usually, being divided is to comprise odd number speed and even number speed two groups.

Promptly; When operation; Selected first speed of expection is with the starting vehicle, the simultaneous attachment mechanism of velocity group that is used to comprise first speed through the gearshift driver from neutral position gearshift (perhaps gearshift in advance) to the first speed selection position (that is, the position is set up in the gearshift of first speed); Keep the clutch of two velocity group all to throw off simultaneously, and be used to subsequently to comprise that the clutch of the velocity group of first speed is engaged.Utilize these steps, set up the gear row that are used for first speed and therefore said first speed provide by speed changer.

Above-mentioned in the preparatory shift process of first speed; The simultaneous attachment mechanism of velocity group that is used to comprise second speed through the corresponding shift driver from neutral position gearshift (perhaps gearshift in advance) to second speed chosen position (that is, second speed is shifted gears and is set up the position).That is to say, saidly carry out simultaneously to the preparatory gearshift of first speed with to the preparatory gearshift of second speed.

When expecting from first speed when second speed upgrades; Saidly be used to comprise that the clutch of the velocity group of second speed is controlled to begin its bonding operation; And when the bonding operation of this clutch is carried out to a certain degree; The said throw-out-of clutch that is used to comprise the velocity group of first speed makes that the speed change from first speed to second speed is accomplished through the switching controls of two clutches.

After the speed change from first speed to second speed is accomplished; The simultaneous attachment mechanism of velocity group that is used to comprise third speed through the corresponding shift driver from neutral position gearshift (perhaps gearshift in advance) to third speed chosen position (that is, third speed is walked around and is set up the position).That is to say, carry out preparatory gearshift to third speed.

When expecting from second speed when third speed upgrades; Saidly be used to comprise that the clutch of the velocity group of third speed is controlled to begin its bonding operation; And when the bonding operation of this clutch is carried out to a certain degree; The said throw-out-of clutch that is used to comprise the velocity group of second speed makes and accomplishes through the switching controls of two clutches to the speed change of third speed from second speed.

When from second speed after the speed change of third speed is accomplished; The simultaneous attachment mechanism of velocity group that is used to comprise the 4th speed through the corresponding shift driver from neutral position gearshift (perhaps gearshift in advance) to the 4th speed selection position (that is, the position is set up in the gearshift of the 4th speed).That is, execution is to the preparatory gearshift of the 4th speed.

Similar switching controls through carrying out two clutches and similarly gearshift in advance, carry out from third speed to the upgrading of the 4th speed, from the 4th speed to the 5th speed upgrading or from the 5th speed upgrading to the 6th speed.

For carry out with via the predetermined sequence of the 5th speed, the 4th speed, third speed and second speed from the 6th speed to the lowering category of first speed, but carry out the similar opposite switching controls of two clutches and similarly gearshift in advance.That is,, carry out predetermined speed and lower category through similar switching controls and the similarly gearshift in advance of carrying out two clutches.

Summary of the invention

In order to control the automatic-manual transmission of the above-mentioned type, need accurately to detect the occupied mobile position of each simultaneous attachment mechanism (perhaps discriminating gear).

Detect for such shift position, above-mentioned publication application discloses a kind of magnetic jointing type shift position detecting device, and it comprises permanent magnet that moves with simultaneous attachment mechanism and the magnetic quantity transducer that detects the magnetic flux that is produced by this permanent magnet.

Yet in order to obtain satisfied performance, the shift position detecting device shown in the above-mentioned publication needs a twist of the wrist to assemble this device and this device is installed to the given location of speed changer, and this makes the cost of speed changer increase.If said device is not by accurate assembling and/or be installed to speed changer, expectability does not obtain the performance of the satisfaction of device.

Can find out a method for addressing the aforementioned drawbacks.Promptly; In the method; Utilize the operation of corresponding shift driver; Simultaneous attachment mechanism moves to gearshift and sets up the position, and is used as bindiny mechanism to the sign of setting up the mobile completion of position to gearshift (perhaps information data) when simultaneous attachment mechanism arrives the output data of sending from magnetic quantity transducer when the position is set up in gearshift.Through utilizing this measure, obtained various output datas, and the datagram that demonstrates the relation between output data and the shift position is provided corresponding to corresponding shift position.With reference to said datagram, can check in shift position from specific output data.

Therefore, in this kind method, the correlation of the output data of sending from magnetic quantity transducer when the gearshift of simultaneous attachment mechanism is set up the position and this is set up the position when the arrival of said simultaneous attachment mechanism should accurately be provided.If failing accurately provides said correlation, the datagram that is produced can not demonstrate the correct relation between output data and the shift position.Certainly, in this case, the not correct detection of expectability shift position.

In addition, when simultaneous attachment mechanism moves to gearshift when setting up the position, permanent magnet can bend via the magnet support structure that it is connected in the gearshift driver.Therefore, even set up the position when said simultaneous attachment mechanism arrives gearshift, because the bending of said magnet support structure, permanent magnet can not occupy correct position, and therefore, the output data of said magnetic quantity transducer can not indicate the right value that the position is set up in gearshift.

In addition, the degree of crook of said magnet support structure is because of the different or variation of individual difference of each speed changer.

These undesirable true reduce or deterioration the gear shift of simultaneous attachment mechanism when setting up the position and this setting up the position when simultaneous attachment mechanism arrival by sensor to the correlation of output data.That is, because this bending, expectability does not obtain the accurate detection of shift position from datagram.

Therefore, an object of the present invention is to provide a kind of shift position detecting device that is used for the discriminating gear of transmission for vehicles, it has avoided above-mentioned shortcoming.

Promptly; In shift position detecting device according to the present invention; Magnet support structure, move to gearshift inevitable bending that produces when setting up the position when discriminating gear; Not influence of position is set up in accurate detection gearshift, and the correlation of the output data of having sent from magnetic quantity transducer when accurately providing the gearshift of discriminating gear to set up the position and this sets up the position when simultaneous attachment mechanism arrival.Utilize these advantages, above-mentioned defective is able to solve.

According to a first aspect of the invention; A kind of shift position detecting device that is used for the discriminating gear of transmission for vehicles is provided; Said speed changer has the discriminating gear that is used for each gear transmission group; Said discriminating gear moves to gear shift through the corresponding shift driver and sets up the position, thereby selects a gear transmission group as the power transmitting gear transmission group.Said shift position detecting device comprises: shift position sensor, this shift position sensor send the output data of the mobile position of the said discriminating gear of representative continuously; And control unit, this control unit comprises: the first gearshift load instruction part, this first gearshift load instruction part are controlled said gearshift driver and are utilized the first gearshift load that said discriminating gear is moved to said gearshift to set up the position; The second gearshift load instruction part; Shift gears the load instruction part at said discriminating gear after the mobile completion of position is set up in said gearshift through said first; This second gearshift load instruction part is controlled said gearshift driver, and load is reduced to the second gearshift load lower than the said first gearshift load from the said first gearshift load shifting gears; And the location storage part is set up in gearshift; This gearshift is set up location storage and is partly stored the output data of when said gearshift driver is controlled by the said second gearshift load instruction part, sending from said shift position sensor, and it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift.

According to a second aspect of the invention; Provide a kind of gear shift of discriminating gear of transmission for vehicles to set up the position Detection method; Said speed changer comprises the discriminating gear that is used for each gear transmission group; Said discriminating gear moves to said gear shift through the corresponding shift driver and sets up the position, thereby selects a gear transmission group as the power transmitting gear transmission group; And the shift position sensor, this shift position sensor sends the output data of the mobile position of the said discriminating gear of representative continuously.Said detecting method comprises: control said gearshift driver and set up the position to utilize the first gearshift load that said discriminating gear is moved to said gear shift; Utilizing the said first gearshift load to accomplish said discriminating gear after moving of position set up in said gearshift, controlling said gearshift driver and be reduced to the second gearshift load littler from the said first gearshift load than the said first gearshift load with the load of will shifting gears; And store the output data of when said gearshift driver is shifted gears Load Control by said second, sending from said shift position sensor, it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift.

Description of drawings

Other purposes of the present invention and advantage will become obvious from the description below combining that accompanying drawing does.Wherein:

Fig. 1 be have a change control system double clutch automatically-cross sectional view of manual transmission, wherein practical application the shift position detecting device of first embodiment of the invention;

Fig. 2 is the schematic side elevation with 1-R simultaneous attachment mechanism of shift position sensor, is used in automatic-manual transmission of Fig. 1;

Fig. 3 shows the curve of the relation between the occupied shift position of the output data sent from the shift position sensor of Fig. 2 and connecting sleeve;

Fig. 4 is a time diagram, show by be used for Fig. 1 automatically-control unit of manual transmission carry out, be used to set up the control that position and the first embodiment of the invention that is mutually related of the output data of sending from the shift position sensor are set up in gearshift;

Fig. 5 is the time diagram that is similar to Fig. 4, but shows the control of second embodiment of the invention; And

Fig. 6 is the time diagram that is similar to Fig. 4, but shows the control of third embodiment of the invention.

Embodiment

Hereinafter, with embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For easy understanding, use various direction terms in the description hereinafter, for example right, left, upper and lower, to the right or the like.But these terms should only illustrate the accompanying drawing of respective element or part relatively on it and understand.

With reference to Fig. 1, its show have change control system double clutch automatically-manual transmission, wherein practical application the gear detection device of first embodiment of the invention.

Double clutch shown in Fig. 1 automatically-manual transmission and change control system basic identical with shown in above-mentioned Japanese publication application (Tokkai) 2007-0404047 on mechanical structure.Therefore, will omit detailed description in the following description to mechanical structure.

But, in order to understand the present invention easily, will be with reference to the concise and to the point automatic speed changing operation of describing said speed changer of Fig. 1.

Description will begin from the halted state of relevant motor vehicle, and wherein motor is in idle running and speed changer and occupies clutch CA and keep the neutral position of disengagement with CB.As as described in after this inciting somebody to action, these clutches CA and CB are the corresponding critical pieces of two velocity group.

Now; For the starter motor motor vehicle; Expection is selected first speed from neutral position; Corresponding to the connecting sleeve 2 of the simultaneous attachment mechanism (perhaps gear selection mechanism) 1 of first speed through gearshift driver 3 from as figure shown in neutral position left (Fig. 1) move to the first speed selection position (that is, the position is set up in the gearshift of first speed), keep the disengaged condition of two clutch CA and CB simultaneously.Utilize this gearshift, the first speed output gear 4 engages with jack shaft 5, thereby selects the first speed pinion unit.Subsequently, the clutch CA that comprises the velocity group of first speed engages with the actual first speed pinion unit of setting up.That is, in speed changer, set up first speed.

During carrying out above-mentioned gearshift (perhaps gearshift in advance) to first speed; Corresponding to the connecting sleeve 7 of the simultaneous attachment mechanism (perhaps gear selection mechanism) of second speed through gearshift driver 8 from as figure shown in neutral position left (Fig. 1) move to the second speed chosen position (promptly; The position is set up in the second speed gearshift); Therefore second speed output gear 9 engages with jack shaft 5, thereby selects the second gear power train.That is,, carry out preparatory gearshift to second speed at above-mentioned time durations.

When expecting from first speed when second speed upgrades; The clutch CB that is used to comprise the velocity group of second speed is controlled to begin its bonding operation; And when the bonding operation of clutch CB is carried out to a certain degree; The clutch CA that is used to comprise the velocity group of first speed is disengaged or throws off, and makes and accomplishes from the speed change of first speed to second speed through the switch motion between two clutch CA and the CB.

When from first speed after the speed speed change of second speed is accomplished; Corresponding to the connecting sleeve 11 of the simultaneous attachment mechanism (perhaps gear selection mechanism) 10 of third speed through gearshift driver 12 from as figure shown in neutral position left (Fig. 1) move to the third speed chosen position (promptly; The position is set up in the third speed gearshift); Third speed input gear 13 engages with corresponding input shaft 14, thereby selects the third gear power train.That is, execution is to the preparatory gearshift of third speed.

When expection is carried out from second speed during to the upgrading of third speed; The clutch CA that is used to comprise the velocity group of third speed is controlled to begin its bonding operation; And when the bonding operation of this clutch CA is carried out to a certain degree; The clutch CB that is used to comprise the velocity group of second speed is disengaged or throws off, and makes to be performed through the switch motion between these two clutch CA and the CB from the speed change of second speed to third speed.That is, carry out from the switching of second speed to the pinion unit of third speed.

When from second speed after the speed change of third speed is accomplished; Corresponding to the connecting sleeve 7 of the simultaneous attachment mechanism (perhaps gear selection mechanism) of the 4th speed from the second speed chosen position (promptly through gearshift driver 8; The position is set up in the second speed gearshift) arrive neutral position as shown in the figure to moved back; And connecting sleeve 7 is from neutral position the 4th speed selection position (that is, the 4th speed gearshift set up position) that moves right in the drawings subsequently.Utilize this gearshift, the 4th speed output gear 15 engages with jack shaft 5, thereby selects the 4th speed pinion unit.That is, execution is to the preparatory gearshift of the 4th speed.

Similar switching controls through carrying out two clutch CA and CB and similarly gearshift in advance, actual carry out from third speed to the upgrading of the 4th speed, from the 4th speed to the 5th speed upgrade and from the 5th speed upgrading to the 6th speed.

For carry out with via the predetermined sequence of the 5th speed, the 4th speed, third speed and second speed from the 6th speed to the lowering category of first speed, but carry out the similar opposite switching controls of two clutch CA and CB and similarly shift gears in advance.That is,, carry out needed lowering category through similar switching controls and the similarly gearshift in advance of carrying out two clutch CA and CB.

When motion backward corresponding to vehicle; When expection is selected reverse gear from neutral position; Be used for reverse gear simultaneous attachment mechanism (perhaps gear selection mechanism) 1 connecting sleeve 2 through gearshift driver 3 from as figure shown in neutral position (in advance gearshift) the reverse gear chosen position (perhaps the position is set up in the reverse gear gearshift) that moves right, keep the disengaged condition of said two clutch CA and CB simultaneously.Utilize this preparatory gearshift, reverse gear output gear 16 engages with jack shaft 5, thereby selects reverse gear drive system.Subsequently, comprise that the clutch CA of the velocity group of reverse gear engages, with the actual reverse gear drive system that sets up.That is, set up reverse gear mode and so vehicle travel backwards of speed changer.

As noted before, in order to control manual transmission automatically, need to detect the shift position of each simultaneous attachment mechanism (perhaps gear selection mechanism).

Detect for this shift position; Use the shift position sensor 17 of magnetic couplings formula, it comprises that permanent magnet 17a (referring to Fig. 2) that moves with connecting sleeve 2 and the standing part that is fixed in speed changer are to detect the magnetic sensor 17b of the magnetic flux that is produced by permanent magnet 17a.

For understanding of Fig. 1 accompanying drawing, the shift position sensor that only is used for " 1-R " (first speed-reverse gear) is represented with reference character 17.

For carrying out above-mentioned gear shift, gearshift driver 3,8 and 12 operation (perhaps simultaneous attachment mechanism 1,6 and 10 gear shift operation) utilize control unit 21 to control in the following manner through driver hydraulic module 22.Should be pointed out that in Fig. 1 further show gearshift driver 26, it is used to set up the 6th speed pinion unit.

When detect from neutral position during in order to start vehicle to the preparatory gearshift of first speed; Control unit 21 sends command signal and gives driver hydraulic module 22, so as with connecting sleeve 2 from the neutral position as shown in fig. 1 first speed selection position (perhaps the position is set up in the gearshift of first speed) of shifting gears left.

Motion and/or the various information signal that is fed to control unit 21 to first speed speed change lever that in advance detection of gearshift can be through speed changer carry out.As can finding out among Fig. 1, the information signal that is fed to control unit 21 is those signals that send from vehicle speed sensor, gas pedal depression degree sensor, gear position sensor (range position sensor) and other sensors and switch.

When receiving this kind command signal, driver hydraulic module 22 control gearshift drivers 3 make connecting sleeve 2 move (perhaps gearshift in advance) to the first speed selection position (perhaps the position is set up in the gearshift of first speed).

In response to the hydraulic pressure that is applied, gearshift driver 3 is with connecting sleeve 2 gearshifts or move to the first speed selection position (perhaps the position is set up in the gearshift of first speed).That is, realize desired preparatory gearshift to first speed.

In the operation period of this preparatory gearshift, the shift position of simultaneous attachment mechanism (perhaps gear selection mechanism) 1 is by shift position sensor 17 continuous detecting, and handled by control unit 21 from the output data that shift position sensor 17 sends.When the output data of sending from shift position sensor 17 with corresponding to the first speed selection position (promptly; The position is set up in first speed gearshift) value when coinciding; Control unit 21 judges that the simultaneous attachment mechanism (perhaps gear selection mechanism) 1 corresponding to first speed has arrived the first speed selection position (promptly; The position is set up in the gearshift of first speed), and therefore judge and accomplish to the preparatory gearshift of first speed.At this moment, control unit 21 sends command signal and gives driver hydraulic module 22, so that the driving pressure of said gearshift driver 3 is zero.

Therefore, be used for connecting sleeve 2 is pressed the berth-changing strength vanishing of the gearshift driver 3 that moves on to the first speed selection position (perhaps the position is set up in the gearshift of first speed), accomplish the preparatory gear shift control of first speed.

When in order to carry out reverse gear when going; Detection is from the preparatory gearshift of neutral position to reverse gear; Control unit 21 sends command signal and gives driver hydraulic module 22, is used for connecting sleeve 2 from the neutral position as shown in fig. 1 reverse gear chosen position (perhaps the position is set up in the reverse gear gearshift) that moves right.

When receiving this command signal, driver hydraulic module 22 control gearshift drivers 3 make connecting sleeve 2 move (perhaps gearshift in advance) to reverse gear chosen position (perhaps the position is set up in the reverse gear gearshift).

In response to the hydraulic pressure that is applied, gearshift driver 3 is with connecting sleeve 2 gearshifts or move to reverse gear chosen position (perhaps the position is set up in the reverse gear gearshift).That is, realize desired preparatory gearshift to reverse gear.

During this preparatory gear shift operation, the drive range of simultaneous attachment mechanism (perhaps gear selection mechanism) 1 is by drive range sensor 17 continuous detecting, and handled by control unit 21 from the output data that drive range sensor 17 sends.When the output data of sending from drive range sensor 17 with corresponding to the reverse speed chosen position (promptly; The position is set up in reverse gear gearshift) value when coinciding; Control unit 21 judges that the simultaneous attachment mechanism (perhaps gear selection mechanism) that is used for reverse gear has arrived reverse gear chosen position (that is, the position is set up in the reverse gear gearshift) and therefore judges and accomplish to the preparatory gearshift of reverse gear.At this moment, control unit 21 sends command signal to give driver hydraulic module 22 so that make the driving pressure of said gearshift driver 3 is zero.

Therefore, be used for connecting sleeve 2 is pressed the gearshift power vanishing of the gearshift driver 3 that moves on to reverse gear chosen position (perhaps the position is set up in the reverse gear gearshift), accomplish the preparatory gear shift control of reverse gear.

Next, be applied to connecting sleeve 2 to carry out the preparatory gearshift load of above-mentioned preparatory gearshift with describing by gearshift driver 3.

The preparatory gearshift load that is produced by gearshift driver 3 is used to that connecting sleeve 2 is moved to gearshift and sets up in the position a desirable gearshift and set up the position.

But if unnecessary big of the load of shifting gears in advance, the life-span of 1-R simultaneous attachment mechanism reduces.In addition, the unnecessary big preparatory gearshift load of this kind is tended to move to gearshift at connecting sleeve and is produced undesirable noise or vibration when setting up the position.Consider these facts, the load of shifting gears in advance should or be confirmed as minimum and practical degree by control.

In the first embodiment of the present invention, utilize following measurement to satisfy the above-mentioned control of gearshift load in advance.

That is, the initial value of the load of shifting gears in advance is set at for example 200N, that is to say, and the intimate minimum value that under normal temperature, can shift gears in advance, and utilize this initial minimum load of gearshift in advance, trial is set up the position with the gearshift that connecting sleeve 2 moves to hope.

Even if after the instruction that is being used to shift gears is sent the preset time past tense; The output data of sending from shift position sensor 17 does not demonstrate the value of setting up the position corresponding to the expection gearshift yet; Judge that then connecting sleeve 2 does not arrive the gearshift of expecting and sets up the position, and the gearshift of carrying out subsequently reattempts control.

Reattempt in the control in gearshift, connecting sleeve 2 turns back to neutral position, and the load of shifting gears in advance to a certain degree (for example increases from initial value; 100N); And subsequently, utilize this preparatory gearshift load that once increases, attempt that once more connecting sleeve 2 is moved to gearshift and set up the position.

Even it is if above-mentioned when reattempting action when carrying out; The output data of sending from shift position sensor 17 does not demonstrate the analog value of setting up the position corresponding to gearshift yet, and then connecting sleeve 2 turns back to neutral position once more, and the load of shifting gears in advance to a certain degree (for example increases from the said value that once increases; 100N); And subsequently, utilize the preparatory gearshift load of this twice increase, attempt connecting sleeve 2 is moved to the gearshift of expection once more and set up the position.

Repeat the above-mentioned action that reattempts, up to the correct connecting sleeve 2 of having realized till moving of position set up in the expection gearshift, promptly till the output data of sending from shift position sensor 17 shows the time of the value of setting up the position corresponding to the expection gearshift.

Utilize the gearshift of above-mentioned repetition to reattempt action, said preparatory gearshift load can be controlled as and can make connecting sleeve 2 arrive the minimum value that the position is set up in the expection gearshift fully.In this case; Said preparatory gearshift load is not unnecessary big, and therefore, the durability of said 1-R simultaneous attachment mechanism does not reduce; Even and moving to expection gearshift when setting up the position when connecting sleeve 2, undesirable noise or vibrations can not produce or be minimized at least.

When the temperature of the hydraulic fluid of speed changer reduced, the minimum of the load of shifting gears in advance became greatly with actual value.

Reason is following.That is, the viscosity of hydraulic fluid becomes big when the temperature of hydraulic fluid reduces, and this makes the preparation of gearshift load of the expection difficulty that becomes.In addition, because identical, significant rotational resistance is born in the relative rotation when the position is set up in the foundation gearshift between the meshed gears, and this need increase preparatory gearshift load.Therefore, the above-mentioned number of times that reattempts action increases.

The shift position detector of the first embodiment of the invention that next, combines with 1-R simultaneous attachment mechanism (perhaps gear selection mechanism) 1 will be described in detail with reference to Fig. 1 and 2.

As illustrated in fig. 1 and 2,1-R simultaneous attachment mechanism (perhaps gear selection mechanism) 1 is set to around the jack shaft 5 around " O " axle (referring to Fig. 2) rotation.Illustrate like Fig. 2 the best, said simultaneous attachment mechanism 1 comprise can be in the drawings the axially movable connecting sleeve 2 of two directions to the right and left.

Shown in figure, connecting sleeve 2 is arranged between the first speed output gear 4 and reverse gear output gear 16 of jack shaft 5 rotatable settings.Should be pointed out that for easy understanding opposite with shown in Fig. 1 of two gears 4 shown in Fig. 2 and 16 position relation.

As shown in Figure 2, the first speed output gear 4 is formed with clutch cover tooth 4a, and reverse gear output gear 16 is formed with clutch cover tooth 16a.

As shown in Figure 2; When connecting sleeve 2 from as figure shown in neutral position move right and during with the clutch cover tooth 4a of the first speed output gear 4 engagement; 1-R simultaneous attachment mechanism (perhaps gear selection mechanism) 1 is in order to engaging the first speed output gear 4 with jack shaft 5, thereby selects the first speed pinion unit.Similarly; When connecting sleeve 2 when neutral position is moved to the left and engages with the clutch cover tooth 16a of reverse gear output gear 16; 1-R simultaneous attachment mechanism (perhaps gear selection mechanism) 1 is in order to engaging reverse gear output gear 16 with jack shaft 5, thereby selects reverse gear drive system.

As shown in Figure 2, connecting sleeve 2 along the axial motion of axle " O " through be formed on connecting sleeve 2 on can realizing by axially movable selector fork 18 of engaging of circular groove.In Fig. 1, for easy purpose, selector fork 18 is shown as with connecting sleeve and opened in 2 minutes.

That is, selector fork 18 slides at gear level 19 upper edge gear levels through gearshift driver 3.Gear level 19 is installed in the case of transmission and extends with the direction that moves along selector fork 18.Gearshift driver 3 has the driveshaft 3a that is connected to speed change lever 18a, and said speed change lever stretches out from selector fork 18 radially outwards.

Gearshift driver 3 is hydraulic reciprocating movement formulas, comprises the piston and the cylinder that engage one another.As shown in Figure 2, gearshift driver 3 is installed on the mounting plate 20 that is fixed in case of transmission.Install for this, comprise that the driving main body 3b of the gearshift driver 3 of piston and cylinder is fixed to mounting plate 20.

As shown in Figure 2, when driving gearshift driver 3, driveshaft 3a does straight line motion in the direction shown in one of arrow.At this moment, connecting sleeve 2 moves towards given location through speed change lever 18a and selector fork 18.That is, when connecting sleeve 2 moves right, select the above-mentioned first speed pinion unit, and when connecting sleeve 2 during, select above-mentioned reverse gear drive system to left movement.That is, when gear-shift driver 3 operation, connecting sleeve 2 shifts to that the position is set up in the gearshift of first speed or the position is set up in the reverse gear gearshift.

Position for the indispensable connecting sleeve 2 of preparatory gearshift that detects for the preparatory gearshift of carrying out first speed or reverse gear occupies has utilized said shift position sensor 17, and it has following structure.

That is, as shown in Figure 2, shift position sensor 17 comprise be installed to speed change lever 18a with the permanent magnet 17a of its motion and be fixed to the specific part of mounting plate 20, to detect the magnetic quantity transducer 17b of the magnetic flux that permanent magnet 17a produces.That is, through detecting the variation of the magnetic flux that is produced by permanent magnet 17a, sensor 17b detects the displacement of permanent magnet 17a with respect to sensor 17b by means of the known control unit.In fact, through said control unit, the detected magnetic signal of magnetic quantity transducer 17b is converted into voltage signal.

Magnetic quantity transducer 17b constantly detects the displacement (the perhaps position of connecting sleeve 2) of permanent magnet 17a, and output is with the displacement continually varying magnitude of voltage of detected permanent magnet 17a.

The shift position of connecting sleeve 2 and the output data of sending from sensor 17b are mutually ratio.Therefore, through the output data of processes sensor 17b, can obtain the shift position of said connecting sleeve 2.

Yet as known, if shift position sensor 17 is not accurately assembled or correctly is not installed on the given location of mounting plate 20, this sensor 17 can not show satisfied performance.

In order to overcome this shortcoming, the processing in the first embodiment of the present invention below control unit 21 execution.

Promptly; At first; Connecting sleeve 2 moves to rightmost position among Fig. 2 by gearshift driver 3; That is, connecting sleeve 2 fully or connect the positions (perhaps the position is set up in the first speed gear shift) of the clutch cover tooth 4a of the first speed output gear 4 dearly, and the output data of when connecting sleeve 2 arrives farthest right position, sending from shift position sensor 17 is regarded as and represents connecting sleeve 2 to the shift gears decisive data of the mobile completion of setting up the position of first speed.

With above identical; Connecting sleeve 2 moves to leftmost position among Fig. 2 by the gearshift driver; Be the position (perhaps the position is set up in the reverse gear gearshift) that connecting sleeve 2 fully perhaps connects the clutch cover tooth 16a of reverse gear output gear 16 dearly, and the output data of when connecting sleeve 2 arrives leftmost position, sending from shift position sensor 17 is regarded as representing connecting sleeve 2 to set up the information data of the mobile completion of position to the reverse gear gearshift.

Through being used to the output data from shift position sensor 17, control unit 21 is carried out the datagram that the relation between expression output data and the shift position is made in calibration.With reference to this datagram, can find shift position according to a certain output data.

Foregoing description will be from following can being expressly understood to the description of Fig. 3.

Fig. 3 show the output data sent from shift position sensor 17 and the position that occupies by connecting sleeve 2 between the datagram of relation.That is, vertical shaft is represented the shift position of connecting sleeve 2, and the output data that the horizontal axis representative is sent from shift position sensor 17.

Like what from this datagram, seen, connecting sleeve 2 shift to from neutral position first speed gearshift set up the position during, the output data linearity of sending from shift position sensor 17 increases to maximum value " Vmax ", shown in arrow " α 1 ".

Simultaneously; Connecting sleeve 2 set up from first speed gearshift position to travelling backwards to neutral position with realize the gearshift of first speed move back the shelves operation during; The output data that sensor 17 sends from the gearshift mobile position reduces with certain hysteresis linearity, shown in arrow " α 2 ".For easy understanding, said hysteresis is illustrated large.

Connecting sleeve 2 shift to from neutral position reverse gear gearshift set up the position during, the output data linearity of sending from shift position sensor 17 is reduced to minimum value " Vmin ", shown in arrow " β 1 ".

Simultaneously, connecting sleeve 2 set up from reverse gear gearshift the position to travelling backwards to neutral position with realize the reverse gear gearshift move back the shelves operation during, the output data of sending from shift position sensor 17 increases so that certain hysteresis is linear, shown in arrow " β 2 ".For easy understanding, said hysteresis is illustrated large.

Datagram as from Fig. 3 is visible, whether exists no matter lag behind, and the shift position of connecting sleeve 2 can easily be confirmed according to the output data that shift position sensor 17 sends.Therefore, each gearshift set up the position and the corresponding output data sent from shift position sensor 17 between correlation should accurately be handled.

When connecting sleeve 2 moves to a gearshift when setting up position (that is, the position is set up in first speed gearshift or the position is set up in the reverse gear gearshift) by gearshift driver 3, the magnet support structure 18 of between connecting sleeve 2 and permanent magnet 17a, extending, 18a is through by bending.Therefore; Even when the position is set up in the gearshift that connecting sleeve 2 arrival connecting sleeves 2 can not be moved further; The output data of sending from shift position sensor 17 is compelled to have a numerical value; This numerical value is different from the right value of expection, and extent of deviation is corresponding to magnet support structure 18, the degree of the bending of 18a.

Promptly; Even when connecting sleeve 2 its gear shift of setting up the position of operation completion to for example first speed gearshift owing to gearshift driver 3; The output data of sending from shift position sensor 17 is compelled to have a numerical value; This value is greater than maximum value " Vmax ", and extent of deviation is corresponding to said magnet support structure 18, the bending of 18a.

In addition; Even for example set up the gearshift of position because the operation of gearshift driver 3 is accomplished it to the reverse gear gear shift when connecting sleeve 2; The output data of sending from shift position sensor 17 is compelled to have a numerical value; This value is less than minimum value " Vmin ", and extent of deviation is corresponding to said magnet support structure 18, the bending of 18a.

In addition, as known, said magnet support structure 18, the degree of crook of 18a is different because of the individual difference of each speed changer.

These undesirable true deteriorations the gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between above-mentioned correlation.That is because such bending, the accurate detection of the shift position of connecting sleeve 2 according to said datagram not expectability draw.

In the first embodiment of the present invention; Through utilizing following measure; When connecting sleeve 2 is moved to the magnet support structure 18 that occurs inevitably when the position is set up in gearshift; The bending of 18a can not exert an influence to confirming correct information data from the gearshift completion of position to gearshift that represent connecting sleeve 2 to set up.

That is, in first embodiment, each gearshift of connecting sleeve 2 set up the position and the corresponding output data sent from gearshift mobile position sensor 17 between correlation utilize control unit 21 to be handled more practically.

Promptly; As shown in Figure 4; This figure illustrates the be mutually related time diagram of control of position and the output data of sending from gearshift mobile position sensor is set up in gearshift; First speed gearshift building-up time " Δ T1 " the time durations from " t1 " to " t3 " of process, the gearshift load of the generation of gearshift driver 3 increase to the first gearshift load (that is, load is introduced in gearshift) and subsequently this gearshift load be held in first load of shifting gears.

The first gearshift load has a numerical value (perhaps load), can guarantee also under the cold temperature that connecting sleeve 2 sets up moving of position to gearshift even speed changer is in.For example, this is worth about 1000N.

First speed gearshift building-up time " Δ T1 " is to confirm that ground moves to the gearshift of first speed with connecting sleeve 2 from neutral position and sets up the required time of position; And the first gearshift load (that is, load is introduced in gearshift) is to confirm that ground moves to the gearshift of first speed with connecting sleeve 2 from neutral position and sets up the required enough big load in position.

Therefore, because the operation of gearshift driver 3, connecting sleeve 2 moves to first gearshift from neutral position and sets up the position, and therefore, the output data of shift position sensor 17 (being magnitude of voltage) changes or increases with a kind of mode shown in the time diagram of Fig. 4.

Shown in the time diagram of Fig. 4, just arrived the time " t2 " that the position is set up in first gearshift from connecting sleeve 2, further moving of connecting sleeve 2 is suppressed, and therefore, connecting sleeve 2 is maintained at first gearshift and sets up the position.

Yet, like finding from said time diagram because magnet support structure 18, the bending of 18a, though the time " t2 " afterwards, the output data of shift position sensor 17 is also compelled to be increased with the degree corresponding to said bending.

In first speed gearshift time " t3 " that building-up time, " Δ T1 " just pass by, the gearshift load that is produced by gearshift driver 3 drops to the second gearshift load suddenly from the first gearshift load, and the load of shifting gears subsequently is held in the second gearshift load.

The said second gearshift load is set at and does not cause magnet support structure 18, the predetermined low value of the bending of 18a.Perhaps, the said second gearshift load has such value, and it causes magnet support structure 18, little bending 18a, that do not influence the output data of sending from shift position sensor 17.

Therefore, at time " t3 ", gearshift driver 3 reduces the driving force that is applied to selector fork 18, and therefore said magnet support structure 18, the crooked vanishing of 18a.Therefore; Afterwards from a certain time-delay " Δ T2 " of time " t3 "; The output data of shift position sensor 17 reduces; And in the time " t4 " that said time-delay " Δ T2 " finishes, the output data of sending from said sensor 17 shows the value of setting up the position corresponding to the gearshift of first speed.

In the superincumbent description, the said second gearshift load is set to and does not cause said magnet support structure 18, the low load of the bending of 18a.But if desired, this second gearshift load also can be set at and only cause said magnet support structure 18, the very little load of the very little bending of 18a.

In the superincumbent description, at time " t3 ", the gearshift load that is produced by said gearshift driver 3 is controlled as from the sharp second gearshift load that drops to of the first gearshift load.But if desired, gearshift load can be carried out to this reduction of the second gearshift load lentamente.In this case, the gearshift load of when the output data from shift position sensor 17 no longer reduces, setting up can be used as the second gearshift load.

From the moment " t5 " of " t3 " over and done with time in the moment " Δ T3 "; Begin to read output data from shift position sensor 17; And from constantly " t5 " to " t6 " constantly keeps data to read, at " t6 " constantly from " t5 " scheduled time in past " Δ T4 " in the moment.

From constantly " t5 " output data that the time durations of " t6 " successively sends from shift position sensor 17 to constantly by on average with acquisition mean value; And the said mean value that so obtains is stored or stores, as representing connecting sleeve 2 to set up the information data of the mobile completion of position to the gearshift of first speed.Said mean value is used to make above-mentioned datagram.

Like what from top description, understood, control unit 21 (see figure 1)s mainly comprise the first gearshift load instruction part, and the location storage part is set up in the second gearshift load instruction part and gearshift.

In the first embodiment of the present invention,, connecting sleeve 2 directly is not used as information data when moving to the output data of sending from shift position sensor 17 when the position is set up in gearshift by gearshift driver 3.

That is, in first embodiment, adopted following distinct steps.

In case connecting sleeve 2 moves to gearshift and sets up the position; The gearshift load that is applied to said connecting sleeve 2 from gearshift driver 3 from the first gear shift load (promptly; Connecting sleeve 2 is moved to gearshift to be set up the required gearshift in position and introduces load) be reduced to the second gearshift load lower than the first gearshift load; And the output data of when gearshift load is reduced to the second gearshift load, sending from shift position sensor 17 is stored, as representing connecting sleeve 2 to set up the information data of the mobile completion of position to gearshift.

Therefore; When connecting sleeve 2 moves to gearshift will be when setting up the position in magnet support structure 18; The influence of the bending that the 18a place occurs is able to avoid or be minimized at least, makes to set up correlation between position and the output data of sending from shift position sensor 17 by more closing to reality ground use corresponding to the gearshift of connecting sleeve 2.

Therefore, when making datagram through the correlation between closing to reality ground said shift position of use and the said shift position sensor output data, this datagram can be avoided by magnet support structure 18, the influence that the above-mentioned bending of 18a causes.That is the datagram of, so processing more closing to reality ground uses.

If being set to, the second gearshift load causes magnet support structure 18, the crooked value of 18a zero (0), and said magnet support structure 18, the influence of the bending of 18a is avoided fully.Therefore, set up the position corresponding to the gearshift of connecting sleeve 2 and the output data sent from shift position sensor 17 between correlation be able to more provide closing to reality.

Like time diagram finding from Fig. 4; From the moment " t5 " from " t3 " over and done with time in the moment " Δ T3 "; The output data of sending from shift position sensor 17 is stored, as representing connecting sleeve 2 to set up the information data of the mobile completion of position to gearshift.Therefore, can avoid in the output data of shift position sensor 17 during the time " Δ T2 " the error that occurs, corresponding to this time " Δ T2 " magnet support structure 18, the bending of 18a still exists definitely.

Be held during the time " Δ T4 " of the second gearshift load in the gearshift load that produces by gearshift driver 3; The output data of sending from shift position sensor 17 is read and in addition on average obtaining mean value, and this mean value is stored as information data from the mobile completion of position to gearshift that represent connecting sleeve 2 to set up.Therefore, even when some output datas of shift position sensor 17 stand electro-mechanical wave, such fluctuation is also by suitable absorption.Therefore, the gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between correlation more provide closing to reality.

In the above-described embodiments, like plotted curve finding, because certain error appears in hysteresis inevitably that occur in the correlation between the shift position of the output data of shift position sensor 17 and connecting sleeve 2 in datagram from Fig. 3.

In the second embodiment of the present invention, such error can be avoided or is minimized at least.

This second embodiment will describe with reference to the time diagram of Fig. 5.

Promptly; In a second embodiment; Shown in the time diagram of Fig. 5; At the time durations from " t1 " to " t3 " of first speed gearshift " Δ T1 " process building-up time, the gearshift load that produces by gearshift driver 3 be increased to the first gearshift load (that is, load is introduced in gearshift) and subsequently this gearshift load be held and be in first load of shifting gears.

Therefore; Because the operation of gearshift driver 3, connecting sleeve 2 moves to the gearshift of first speed from neutral position and sets up the position, and therefore; The output data of shift position sensor 17 (that is magnitude of voltage) changes or increases with the mode shown in the time diagram of Fig. 5.

Shown in the time diagram of Fig. 5, the moment " t2 " when connecting sleeve 2 has just arrived first speed gearshift and sets up the position, connecting sleeve 2 can not be moved further and therefore connecting sleeve 2 bags first speed that remains on shift gears and set up the position.

Yet, as from the time diagram finding because magnet support structure 18, the bending of 18a, though " t2 " constantly afterwards the output data of shift position sensor 17 also be compelled to increase the degree corresponding with this bending.

In first speed gearshift building-up time " Δ T1 " moment of process " t3 " just; The gearshift load that is produced by gearshift driver 3 than the lower lowest load of the above-mentioned second gearshift load (for example drops to from the first gearshift load is sharp; Be zero in an example shown), and the load of shifting gears subsequently remains in lowest load.

Because be reduced to lowest load suddenly through driver 3 gearshift load, it is zero (0) basically that the driving force that is applied to selector fork 18 becomes, and therefore, magnet support structure 18, the bending of 18a disappears.

In addition; Because the unexpected reduction of gearshift load; Connecting sleeve 2 is to return to neutral position corresponding to the degree of inevitable play; And therefore, from the certain hour of constantly " t3 " " Δ T5 " at interval, the output data reduction of shift position sensor 17 and the moment " t4 " in " Δ T5 " past in the time lag; The output data of shift position sensor 17 shows a numerical value, and this numerical value equals to deduct the value corresponding to above-mentioned play from the value of setting up the position corresponding to the gearshift of first speed.

In the moment " t5 " from " t3 " transit time in the moment " Δ T6 "; The gearshift load that is produced by gearshift driver 3 is from lowest load (0 (zero) load) the above-mentioned magnet support structure 18 that do not cause that increases rapidly; The second gearshift load of the bending of 18a, and the load of after this shifting gears is maintained at the second gearshift load.

Because the increase of the gearshift load that is produced by gearshift driver 3, the driving force that is applied to selector fork 18 increases, and therefore connecting sleeve 2 is set up the position to shift to the gearshift of first speed corresponding to the degree of said play.

Because the increase of said gearshift load is towards not causing magnet support structure 18, the second gearshift load of the bending of 18a, so connecting sleeve 2 can move to the gearshift of first speed and sets up the position and do not cause magnet support structure 18, the bending of 18a.

Therefore; From the moment " t5 "; The output data of shift position sensor 17 increases in the time lag " Δ T7 " with the mode shown in the time diagram of Fig. 5; And in the moment " t6 " when the time lag " Δ T7 " finishes, the output data of shift position sensor 17 demonstrates the value of setting up the position corresponding to the gearshift of first speed.

From the moment " t7 "; Pass through the time " Δ T8 " in the moment " t7 " from the moment " t5 "; Begin to read the output data of shift position sensor 17; And from constantly " t7 " to " t8 " constantly keeps data to read, at " t8 " constantly from " t7 " scheduled time in past " Δ T4 " in the moment.

Obtaining mean value, and the mean value that so obtains is stored as represent connecting sleeve 2 to the shift gears information data of the mobile completion of setting up the position of first speed output data of during the time " Δ T4 ", sending from shift position sensor 17 by on average.This mean value is used to make above-mentioned datagram.

In said second embodiment,, connecting sleeve 2 directly is not used as information data when moving to the output data of sending from shift position sensor 17 when the position is set up in gearshift through gearshift driver 3.

Promptly; In said second embodiment; Do not cause magnet support structure 18 when gearshift load is reduced to, when load was shifted gears in second of the bending of 18a, the output data of sending from shift position sensor 17 was stored as representing connecting sleeve 2 to set up the information data of the mobile completion of position to gearshift.

Therefore; In said second embodiment; The influence that moves to the bending that gearshift will occur when setting up the position when connecting sleeve 2 is able to avoid or be minimized at least, and so provides the gearshift of connecting sleeve 2 to set up the correlation between the output data that position and shift position sensor 17 send more closing to reality.

Therefore, can avoid being derived from above-mentioned magnet support structure 18, the influence of the bending of 18a through actual utilization with respect to the datagram of the shift position sensor output data generation of the shift position of connecting sleeve 2.That is the datagram of, so making is able to more appropriateness and uses practically.

In said second embodiment, move to after gearshift sets up the position at connecting sleeve 2, gearshift driver 3 is controlled, and before producing the second gearshift load, produces than the low lowest load (that is zero load) of the second gearshift load.

Therefore, in said second embodiment, the error that is caused by the hysteresis that occurs among first embodiment is able to avoid or be minimized at least.Therefore, provide the gearshift of connecting sleeve 2 to set up the correlation between the output data that position and shift position sensor 17 send more closing to reality.

In said second embodiment, at constantly " t5 ", gearshift driver 3 is controlled and is controlled and the state generation second that the produces zero load load of shifting gears from this gearshift driver 3 wherein.From constantly " t5 " the transit time " Δ T8 " the moment " t7 " afterwards the output data sent of shift position sensor 17 be used as the data of setting up the position corresponding to the gearshift of connecting sleeve 2.Therefore, the error that during the time " Δ T7 ", produces does not influence the output data of shift position sensor 17.Therefore, provide more closing to reality connecting sleeve 2 occupy gearshift when setting up the position gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between correlation.

In the situation of the 1-R of Fig. 2 simultaneous attachment mechanism, can adopt following measure, it is the third embodiment of the present invention.

Promptly; Below measure first speed gearshift that is used to obtain connecting sleeve 2 when connecting sleeve 2 occupies the gearshift of first speed and sets up the position set up the position with the output data of sending from shift position sensor 17 between correlation, and the reverse gear of connecting sleeve 2 correlation between the output data of setting up the position and sending from the mobile position sensor 17 of shifting gears of shifting gears when obtaining connecting sleeve 2 and occupying the reverse gear gearshift and set up the position.In order to obtain these correlations, control unit 21 (see figure 1)s are engaged in the control that the plotted curve of Fig. 6 is described.

Promptly; Because the operation of gearshift driver 3, be used for connecting sleeve 2 is moved to the first speed gear shift operation that first speed gearshift sets up the position and is used for that connecting sleeve 2 is moved to the reverse gear gearshift and sets up the reverse gear gear shift operation of position and repeat with predetermined period " Δ T9 " and alternately carry out.

The each execution when shifting gears; Obtain during the time " Δ T4 " mean value of the output data of sending from shift position sensor 17, promptly occupy mean value " Vmax1 ", " Vmax2 ", " Vmax3 " of the output data of sending when the position is set up in the gearshift of first speed when connecting sleeve 2 ... and occupy reverse gear shift gears mean value " Vmin1 ", " Vmin2 ", " Vmin3 " of the output data sent when setting up the position when connecting sleeve 2 ....

At mean value " Vmax1 ", " Vmax2 ", " Vmax3 " ... in; Value the maximum stores as representing connecting sleeve 2 to set up the mobile completion information data of position to the gearshift of first speed; And at mean value " Vmin1 ", " Vmin2 ", " Vmin3 " ... in, the value reckling stores as representing connecting sleeve 2 to set up the information data of the mobile completion of position to the reverse gear gearshift.

Utilize these measures, provide exactly the gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between correlation, and can expect to have following advantage.

When non-driving scope that speed changer is in that two clutches " CA " and " CB " throw off, obtain above-mentioned correlation.Therefore, when carrying out the first time during gear shift operation, the top collision of connecting sleeve 2 and clutch cover tooth 4a and 16a possibly take place, cause connecting sleeve 2 to fail to arrive the gearshift of first speed and set up position or reverse gear and shift gears and set up the position.

Yet; Set up the first speed gear shift operation of position and connecting sleeve 2 is moved to the reverse gear gearshift and set up the reverse gear gear shift operation of position and repeat and alternately carry out because connecting sleeve 2 is moved to first speed gearshift, therefore can realize that connecting sleeve arrive that the position is set up in the gearshift of first speed or the position is set up in the reverse gear gearshift through gear shift operation next time.That is to say; Even when top collision owing to connecting sleeve 2 and clutch cover tooth 4a and 16a; Connecting sleeve 2 fail through the first time gear shift operation arrive that the position is set up in first speed gearshift or the position is set up in the reverse gear gearshift, gear shift operation also can make connecting sleeve 2 arrive gear shift and set up the position next time.

In the above-described embodiments, the gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between correlation can upgrade with following frequency.

If relevant motor vehicle shipping is just preferably upgraded gearshift with the predetermined interval of the ignition trigger handover operation (ignition-on switching operation) of relevant motor vehicle engine and is set up the position.Said predetermined interval is different because of the inferior number of operating time, operating range and igniting handover operation.Utilize these measures, gearshift set up the position and the output data sent from shift position sensor 17 between correlation upgrade automatically.

As stated, when non-driving scope that speed changer is in that two clutches " CA " and " CB " throw off, obtain above-mentioned correlation.Therefore, need let the driver know that said correlation is processed.

Reason is following.That is to say that if in said correlation processing procedure, the driver makes from non-driving scope to the selection operation that drives scope, then clutch " CA " is engaged, and the therefore compelled operation of vehicle, and this to be not driver's institute be willing to.

In order to address the above problem, in Fig. 1, shown in indicating device 23 is provided.

That is, be processed in said correlation, the instruction of the first gearshift load is issued or the time durations that is issued of instruction of the second gearshift load, said control unit 21 operation indicating devices 23 let the driver know that said correlation is processed.

Even in order to carry out when driving the selection operation of scope, eliminating the problems referred to above by error the driver, the selection inhibiting apparatus 24 that is provided with as shown in Figure 1 definitely from non-driving scope.

That is, just be processed in said correlation, the instruction of the first gearshift load is issued and the time durations that is issued of instruction of the second gearshift load, inhibiting apparatus 24 are selected in said control unit 21 operations.Utilize such selection inhibiting apparatus 24,, also can not carry out from of the actual manual switchover of non-driving scope to the scope of driving even the driver makes from the selection operation of non-driving scope to the scope of driving.

Corresponding to each speed carry out connecting sleeve 2 when arriving gearshift and setting up the position gearshift of connecting sleeve 2 set up the position and the output data sent from shift position sensor 17 between the renewal of correlation.Carry out when in addition, this renewal of said correlation can be carried out routine check at relevant motor vehicle.

The whole contents of the Japanese patent application 2008-184356 that on July 16th, 2008 proposed is drawn for referencial use at this.

Though the present invention is described according to inventive embodiment, the invention is not restricted to aforesaid these embodiments.Those skilled in the art can realize these embodiments' multiple modification and change according to top description.

Claims (18)

1. shift position detecting device that is used for the discriminating gear of transmission for vehicles; Said speed changer has the discriminating gear that is used for each gear transmission group; Said discriminating gear moves to gearshift through the corresponding shift driver and sets up the position; Thereby select a gear transmission group as the power transmitting gear transmission group

Said shift position detecting device comprises:

Shift position sensor, this shift position sensor send the output data of the mobile position of the said discriminating gear of representative continuously; And

Control unit, this control unit comprises:

The first gearshift load instruction part, this first gearshift load instruction part are controlled said gearshift driver and are utilized the first gearshift load that said discriminating gear is moved to said gearshift to set up the position;

The second gearshift load instruction part; Shift gears the load instruction part at said discriminating gear after the mobile completion of position is set up in said gearshift through said first; This second gearshift load instruction part is controlled said gearshift driver, and load is reduced to the second gearshift load lower than the said first gearshift load from the said first gearshift load shifting gears; And

The location storage part is set up in gearshift; This gearshift is set up location storage and is partly stored the output data of when said gearshift driver is controlled by the said second gearshift load instruction part, sending from said shift position sensor, and it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift.

2. shift position detecting device as claimed in claim 1; Wherein, the said second gearshift load that is produced from the instruction of the said second gearshift load instruction part by said gearshift actuator response is that the said output data of sending from said shift position sensor not have the load that influences in fact.

3. shift position detecting device as claimed in claim 1, wherein, the location storage part is upgraded said shift position sensor with the predetermined interval of the ignition trigger handover operation of associated vehicle motor output data is set up in said gearshift.

4. shift position detecting device as claimed in claim 3; Also comprise indicating device; Set up location storage in said gearshift and store partly that the operation of position is set up in said gearshift, the instruction that is used to produce the said first gearshift load is issued or be used to produce the time durations that the instruction of the said second gearshift load is issued, this indicating device sends caution.

5. shift position detecting device as claimed in claim 3; Wherein, Said transmission for vehicles comprises transmission of power non-driving scope that is blocked and the driving scope that allows to carry out transmission of power; And wherein during said non-driving scope, carry out said discriminating gear and set up the moving of position, the reduction of said gearshift load and the storage that the position is set up in said gearshift to said gearshift.

6. shift position detecting device as claimed in claim 5; Wherein, Said shift position detecting device also comprises the selection inhibiting apparatus; Set up location storage in said gearshift and store partly that the position is set up in said gearshift, the instruction that is used to produce the said first gearshift load is issued or be used to produce the time durations that the instruction of the said second gearshift load is issued, this selection inhibiting apparatus is forbidden from the manual switchover of said non-driving scope to said driving scope.

7. shift position detecting device as claimed in claim 1; Wherein, Said gearshift is set up location storage and is partly stored from the said second gearshift load instruction part and control the output data that said gearshift driver sends from said shift position sensor during through scheduled time slot when the said first gearshift load is reduced to the said second gearshift load with the load of will shift gears, with it as representing said discriminating gear to set up the information data of the mobile completion of position to said gearshift.

8. shift position detecting device as claimed in claim 7, wherein, said scheduled time slot is confirmed based on the operating lag of said gearshift driver.

9. shift position detecting device as claimed in claim 1; Wherein, The said second gearshift load instruction part is controlled said gearshift driver; Be reduced to lowest load with the load of before producing the said second gearshift load, will shifting gears from the said first gearshift load, said lowest load is lower than the said second gearshift load.

10. shift position detecting device as claimed in claim 9; Wherein, Said gearshift is set up location storage and is partly stored when said gearshift load and increase to the output data that said second gearshift is sent from said shift position sensor during load from said lowest load, and it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift.

11. shift position detecting device as claimed in claim 10; Wherein, Said gearshift set up location storage partly store from the said second gearshift load instruction part send instruction give said gearshift driver with scheduled time slot that said gearshift load is confirmed when said lowest load increases to the said second gearshift load, based on the operating lag of said gearshift driver through the out-of-date output data of sending from said shift position sensor, with it as said information data.

12. shift position detecting device as claimed in claim 1; Wherein, Remain in the time durations that the position is set up in said gearshift at said discriminating gear by said gearshift driver; Said gearshift is set up the location storage part and is read the output data of said shift position sensor repeatedly, and stores the mean value of said output data, and it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift.

13. shift position detecting device as claimed in claim 1; Wherein, When moving to first gearshift along first direction when setting up the position; Said discriminating gear makes a gear transmission group operated foundation, and when moving to second gearshift along second direction when setting up the position, said discriminating gear makes another gear transmission group operated foundation; And the gear shift load that wherein said control unit is produced by said gearshift driver in order to increase when said discriminating gear moves along said first direction, and, the said second direction in said discriminating gear edge reduces gearshift load when moving by said gearshift driver generation.

14. shift position detecting device as claimed in claim 13; Wherein, Said control unit is in order to by means of the said first and second gearshift load instruction parts, repetition with alternately along said first direction said discriminating gear is moved to said first gearshift and set up the position and along said second direction said discriminating gear is moved to said second gearshift and set up the position, thereby said shift position sensor produced be used for first group of output data that said first gearshift sets up the position and be used for said second gearshift and set up second group of output data of position.

15. shift position detecting device as claimed in claim 14; Wherein, The said gearshift of said control unit is set up location storage and is partly stored the maximum output data of value in said first group of output data; It is set up the information data of the mobile completion of position as the said discriminating gear of representative to said first gearshift; And store the minimum output data of value in said second group of output data, it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said second gearshift.

16. shift position detecting device as claimed in claim 1, wherein said discriminating gear comprises:

First output gear and second output gear, each output gear constitutes the part of respective teeth wheels; And

Connecting sleeve; This connecting sleeve axially-displaceable is arranged between said first output gear and second output gear movingly; Said connecting sleeve makes the gear transmission group of said first output gear operated foundation when engaging with said first output gear; And when engaging with said second output gear, make the gear transmission group of said second output gear operated foundation, said connecting sleeve is moved by said gearshift driver.

17. shift position detecting device as claimed in claim 16, wherein, said shift position sensor comprises:

Permanent magnet;

Magnet support structure, this magnet support structure is extended between the selector fork of said permanent magnet and said connecting sleeve, makes said permanent magnet move with said selector fork; And

Magnetic quantity transducer, this magnetic quantity transducer is fixed in the standing part of said speed changer, in order to the magnetic flux of detection by said permanent magnet generation,

Wherein:

The said first gearshift load is when putting on said connecting sleeve, to make said magnet support structure produce certain crooked load, and

The said second gearshift load is when putting on said connecting sleeve, not make said permanent magnet supporting structure produce crooked load in fact.

18. the position Detection method is set up in the gearshift of the discriminating gear of a transmission for vehicles; Said speed changer has the discriminating gear that is used for each gear transmission group; Said discriminating gear moves to said gearshift through the corresponding shift driver and sets up the position, thereby selects a gear transmission group as the power transmitting gear transmission group; And the shift position sensor, this shift position sensor sends the output data of the mobile position of the said discriminating gear of representative continuously,

Said detecting method comprises:

Control said gearshift driver and set up the position to utilize the first gearshift load that said discriminating gear is moved to said gearshift;

Utilizing the said first gearshift load to accomplish said discriminating gear after moving of position set up in said gearshift, controlling said gearshift driver and be reduced to the second gearshift load littler from the said first gearshift load than the said first gearshift load with the load of will shifting gears; And

Store the output data of when said gearshift driver is shifted gears Load Control by said second, sending, it is set up the information data of the mobile completion of position as the said discriminating gear of representative to said gearshift from said shift position sensor.

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