CN203272762U

CN203272762U - Electric actuator

Info

Publication number: CN203272762U
Application number: CN 201320220060
Authority: CN
Inventors: 上本隆文
Original assignee: JTEKT Corp
Current assignee: JTEKT Corp
Priority date: 2012-05-08
Filing date: 2013-04-26
Publication date: 2013-11-06
Anticipated expiration: 2023-04-26
Also published as: JP2013234703A

Abstract

The utility model provides an electric actuator which can restrain upsizing and manufacturing cost rising caused by a structure for transmitting rotation driving force of an electric motor. The electric actuator (21) comprises a main casing (22) for accommodating a variable speed selection shaft (15), an electric motor (23), a selection conversion mechanism (25), a shift conversion mechanism (24) and a transmission shaft (41). The electric motor (23) generates the rotation driving force and outputs the rotation driving force from an output shaft (130), the selection conversion mechanism (25) and the shift conversion mechanism (24) are used for transmitting the rotation driving force to the variable speed selection shaft (15), the transmission shaft (41) is used for transmitting the rotation driving force to the selection conversion mechanism (25) and the shift conversion mechanism (24), and the rotation driving force is transmitted from the transmission shaft (41) to the selection conversion mechanism (25) or cut off from the transmission shaft (41) to the selection conversion mechanism (25).

Description

Motor driver

Technical field

The utility model relates to motor driver, and in order to switch the position of the speed change gear in speed changer, this motor driver is used for being called as the variable speed drives of selecting action and gearshift action.

Background technique

In the past, the known speed change gear that the mechanical type auto-manual speed changer (Automated Manual Transmission) of the gear change of automatically carrying out manual transmission is arranged.Speed change gear comprises the speed changer of accommodating speed change gear etc. and the motor driver that is used for the variable speed drives speed changer.

In following patent documentation 1, an example as motor driver, disclose following gearshift/selection drive unit: it possesses electric motor etc., driving force by electric motor, make the gear selection axle slide vertically to select action, or make the gear selection axle rotate the action of shifting gears centered by axle.

This gearshift/selection drive unit also possesses: the first shifting mechanism that is used for the rotary driving force of electric motor is transformed to the power that makes the rotation of gear selection axle; Be used for this rotary driving force is transformed to the second shifting mechanism of the power that makes the slip of gear selection axle; With first magnetic clutch of this rotary driving force to the first shifting mechanism transmission or cut-out; With second magnetic clutch of this rotary driving force to the second shifting mechanism transmission or cut-out.

Be combined with an end of live axle at the running shaft spline of electric motor, the other end of live axle is connected with the first magnetic clutch or the second magnetic clutch.Therefore, live axle is exported and be passed to the rotary driving force of electric motor from running shaft, is passed to the first shifting mechanism or the second shifting mechanism from live axle via the first magnetic clutch or the second magnetic clutch.

In addition, in the powershift system of following patent documentation 2 records, a plurality of powershift modules with input shaft, output shaft, multi-plate clutch etc. with state arranged side by side by integrated.The input shaft of adjacent powershift module is each other with coaxial shape combination, and the end of the input shaft of powershift module a plurality of powershift modules and column direction one end and motor link.In adjacent powershift module, it is polygonal linking department that the end of the input shaft of a side powershift module has section, is formed with the connect apertures with polygonal section at the input shaft of the opposing party's powershift module.The linking department of the input shaft of the powershift module by a side embeds the connect apertures of input shaft of the opposing party's powershift module, and the input shaft of adjacent powershift module is bonded to each other as can the one rotation thus.After the driving force of motor is passed to input shaft near the powershift module of motor, be passed to successively the input shaft of the powershift module away from the motor.Thus, the driving force of motor is dispensed to each powershift module.

Patent documentation 1: TOHKEMY 2011-75097 communique

Patent documentation 2: TOHKEMY 2005-127463 communique

In the gearshift of patent documentation 1/selection drive unit, because make running shaft and the combination of live axle spline, due to the existence of the bound fraction of these axles, gearshift/select the overall dimensions of drive unit integral body to become large.In addition, implement because have at running shaft and live axle both sides necessity that spline is processed, so the rising of manufacture cost is inevitable.In addition, in the situation that want to make the maximum output of electric motor to reduce, the necessity that has the inertia that makes the first magnetic clutch that this capacity is impacted and the second magnetic clutch to reduce if therefore live axle attenuates, is implemented the spline processing difficulty that becomes at live axle.

Even aspect the powershift system of patent documentation 2, the formation that is bonded to each other at the input shaft with adjacent powershift module, the output shaft of input shaft and motor is linked, also worry the problem identical with patent documentation 1.

The model utility content

The prerequisite that this model utility is based on the background that relates to produces, and its purpose is to provide the motor driver of the rising of maximization that a kind of formation that can suppress because of the rotary driving force that transmits electric motor causes, manufacture cost.

The model utility of technological scheme 1 record is motor driver, this motor driver 21 be used for by make link speed change lever 16 is arranged gear selection axle 15 vertically M4 slide to make above-mentioned speed change lever to select action, and by making above-mentioned gear selection axle pivot to make the action of shifting gears of above-mentioned speed change lever, comprise: body shell 22, it accommodates above-mentioned gear selection axle; Electric motor 23, it is installed on the aforementioned body housing, has output shaft 130, produces rotary driving force and it is exported from above-mentioned output shaft; Select shifting mechanism 25, it is contained in the aforementioned body housing, above-mentioned rotary driving force is transformed to the power that above-mentioned gear selection axle is slided vertically, and it is passed to above-mentioned gear selection axle; Gearshift shifting mechanism 24, it is contained in the aforementioned body housing, above-mentioned rotary driving force is transformed to the power that above-mentioned gear selection axle is pivoted, and it is passed to above-mentioned gear selection axle; Passing shaft 41, it is contained in the aforementioned body housing, be integrally formed axle 151 together with and above-mentioned output shaft integrally formed with above-mentioned output shaft, be used in a side opposite with above-mentioned output shaft side, above-mentioned rotary driving force being passed to above-mentioned selection shifting mechanism and gearshift shifting mechanism; Select magnetic clutch 45, it is contained in the aforementioned body housing, and above-mentioned rotary driving force is transmitted or cuts off from above-mentioned passing shaft to above-mentioned selection shifting mechanism; And gearshift magnetic clutch 43, it is contained in the aforementioned body housing, and above-mentioned rotary driving force is transmitted or cuts off from above-mentioned passing shaft to above-mentioned gearshift shifting mechanism.

In addition, although numeral represents in mode of execution described later corresponding constituting component etc., be not that circumscription with claim is in mode of execution.Below, identical on this.

According to this formation, be integrally formed axle because passing shaft and output shaft are integrally formed, so there is not the bound fraction of passing shaft and output shaft.Therefore do not have bound fraction, shaft correspondingly shortens, and the overall dimensions of motor driver is diminished.In addition, needn't implement spline processing etc. by the axle to both sides for passing shaft is combined with output shaft.Its result can suppress to transmit the maximization of the motor driver that the formation of the rotary driving force of electric motor causes, the rising of manufacture cost.

Motor driver described according to technological scheme 1, the model utility of technological scheme 2 is characterised in that, above-mentioned electric motor has: motor rotor 131, and it has back of the body yoke 135 and is installed on the magnet 136 of the outer circumferential face of above-mentioned back of the body yoke, and is embedded in above-mentioned output shaft outward in the mode that can separate; Motor stator 132, it surrounds the said motor rotor; Motor box 134, it accommodates said motor rotor and motor stator, motor driver also comprises the resolver 160 be used to the angle of swing that checks above-mentioned shaft, and it has: in above-mentioned shaft with the resolver rotor 161 that is embedded in the part of above-mentioned passing shaft side outside the said motor rotor is compared; With the resolver stator 162 that surrounds above-mentioned resolver rotor.

Consist of according to this, when the assembling of motor driver, if motor rotor is separated from shaft, the resolver rotor can be embedded in shaft in the mode that does not hinder motor rotor successfully.

In addition, different from the utility model, for example, in the situation that by recess being set at output shaft and passing shaft being inserted this recess, passing shaft is combined with the output shaft spline, because the output shaft chap so be difficult to the resolver rotor is embedded in output shaft outward, is difficult to resolver is arranged at output shaft.But, in the utility model, because by passing shaft and output shaft are integrally formed as shaft, the shaft integral body of output shaft is attenuated, so can resolver be set at output shaft.And, shorten and attenuate by making shaft integral body, because the inertia that the rotation of shaft brings is reduced, can make the maximum output of electric motor reduce but can satisfy the demand.

Motor driver described according to technological scheme 2, the motor driver of technological scheme 3 described model utilitys, it is characterized in that, also possesses motor casing 133, it is installed on the aforementioned body housing in the mode that can load and unload, be formed with the patchhole 137 that inserts and supply above-mentioned resolver stator to embed for above-mentioned shaft, at this motor casing, the said motor box be installed.

According to this formation, can the motor box be installed on body shell via motor casing, in addition, can be by the position of motor casing fixed solution parser stator.

A kind of assembling method of motor driver, it is the assembling method of the motor driver of technological scheme 3 records, it is characterized in that, comprising: with the step of any one link at least in the passing shaft in above-mentioned shaft and above-mentioned selection magnetic clutch and gearshift magnetic clutch; Above-mentioned resolver rotor is embedded in the step of above-mentioned shaft outward; In the mode of the above-mentioned resolver rotor of above-mentioned resolver stator surrounding, make above-mentioned shaft insert the step of above-mentioned patchhole; The said motor rotor is embedded in the step of above-mentioned output shaft outward; Surround the mode of said motor rotor with above-mentioned motor stator, the said motor box is installed on the step of said motor housing.

According to the method, during the assembling of motor driver, the resolver rotor can be embedded in the mode that is not subjected to the motor rotor obstruction shaft that motor rotor is not installed successfully.

Description of drawings

Fig. 1 means the exploded perspective view of schematic configuration of the speed change gear of the motor driver of having used a mode of execution of the present utility model.

Fig. 2 means the stereogram of formation of the speed-changing driving device of speed change gear shown in Figure 1.

Fig. 3 means the worm's eye view of the formation of speed-changing driving device.

Fig. 4 means the sectional view of the formation of speed-changing driving device.

Fig. 5 is the sectional view along the A-A line of Fig. 4.

Fig. 6 is the major component sectional view that describes for the assembling sequence to motor driver.

Fig. 7 is the major component sectional view for the assembling sequence of explanation motor driver.

Description of reference numerals:

15 ... the gear selection axle; 16 ... speed change lever; 21 ... motor driver; 22 ... body shell; 23 ... electric motor; 24 ... the gearshift shifting mechanism; 25 ... select shifting mechanism; 41 ... passing shaft; 43 ... the gearshift magnetic clutch; 45 ... select magnetic clutch; 130 ... output shaft; 131 ... motor rotor; 132 ... motor stator; 133 ... motor casing; 134 ... the motor box; 135 ... back of the body yoke; 136 ... magnet; 137 ... patchhole; 151 ... shaft; 160 ... resolver; 161 ... the resolver rotor; 162 ... the resolver stator; M4 ... axially.

Embodiment

With reference to accompanying drawing, the utility model is preferred embodiment described.

Speed change gear 1 possesses speed changer 2 and speed changer 2 is carried out the speed-changing driving device 3 of variable speed drives.

Speed changer 2 is known normal engagement type wheeled speed changers of parallel teeth, is installed on the vehicles such as passenger car, truck.Speed changer 2 possesses gear housing 7 and is contained in the interior normal engagement type wheeled gear of parallel teeth (not shown) of gear housing 7.

Speed-changing driving device 3 comprises: make the shift gears action or select the gear selection axle 15 of action of the above-mentioned gear (not shown) of speed changer 2; Be used for that with conduct gear selection axle 15 is shifted gears and move or select the shared driving source that moves and the motor driver 21 that is used.In addition, because Fig. 1 oversimplifies each parts in the figure of expression,, illustrate later at Fig. 2 described later particularly for motor driver 21 for the detailed formation of each parts.

Gear selection axle 15 is along the long axis body of the direction of illustrated M4.At the middle part of gear selection axle 15, linking has an end 16A who is contained in the speed change lever 16 in gear housing 7.Speed change lever 16 rotates together with gear selection axle 15 around the central axis 17 of gear selection axle 15.The right inner side shown in Figure 1 of the forward end of gear selection axle 15 is outer outstanding to gear housing 7.Here, speed change lever 16 pivots according to gear selection axle 15 or slides to axial M4, and carries out actual gearshift action or select action.And although detailed aftermentioned, motor driver 21 makes speed change lever 16 select to move by making gear selection axle 15 rotation make speed change lever 16 action of shifting gears by gear selection axle 15 is slided.

In gear housing 7, contain a plurality of

gear level

10A, 10B, the 10C that are parallel to each other and extend.Be fixed with gearshift

compressing tablet

12A, 12B, the 12C that can engage with the other end 16B of speed change lever 16 at each

gear level

10A, 10B, 10C.In addition, be provided with at each

gear level

10A, 10B, 10C the selector fork 11 that engages with clutch sleeve (not shown) in speed changer 2.In addition, in Fig. 1, only expression is arranged at the selector fork 11 of gear level 10A.

If by motor driver 21, gear selection axle 15 is slided along its axial M4, speed change lever 16 moves to axial M4.Its result, the other end 16B of speed change lever 16 optionally engages with any one in gearshift

compressing tablet

12A, 12B, 12C, realizes thus selecting action.

On the other hand, if make gear selection axle 15 around its central axis 17 rotations by motor driver 21, speed change lever 16 swings around central axis 17.Its result, any one the gearshift

compressing tablet

12A, 12B, the 12C that engage with speed change lever 16 move to axial M1, M2, the M3 of

gear level

10A, 10B, 10C, thus, realize the gearshift action.In addition, for the angle of rotation that realizes the needed gear selection axle 15 of this gearshift action is more a lot of than 360 ° that are equivalent to 15 1 weeks of gear selection axle little, be for example 120 ° of left and right.

Fig. 2 means the stereogram of formation of the speed-changing driving device of speed change gear shown in Figure 1.Fig. 3 means the worm's eye view of the formation of speed-changing driving device.Fig. 4 means the sectional view of the formation of speed-changing driving device.Fig. 5 is the sectional view along the A-A line of Fig. 4.

Referring to Fig. 2～Fig. 5 to speed-changing driving device 3 particularly the formation of motor driver 21 describe.

Motor driver 21 be fixed in gear housing 7(Fig. 1 with reference to) outer surface.As shown in Figure 4, motor driver 21 possesses the body shell 22 that becomes its gabarit and accommodate the case shape of gear selection axle 15 etc.

Particularly, motor driver 21 also possesses installation stay 18 shown in Figure 2 except body shell 22.Stay 18 is installed to be possessed integratedly main part 19 and extends configuration section 20.

Main part 19 is block-shaped (also with reference to the Fig. 3) that have the roughly pentagonal profile of base shape in based on the worm's eye view of overlooking.Form the recessed rectangular-shaped hollow space 19A that overlooks for concavity in a side of main part 19.

Extension configuration section 20 is circular tube shapeds, and 22 sides are extended from main part 19 to body shell.The end of the downside in Fig. 3 of body shell 22 sides of extending configuration section 20 is provided with integratedly to the radially outstanding lip part 20A that extends configuration section 20.The outline-shaped of lip part 20A when observing from the bearing of trend that extends configuration section 20 becomes the essentially rectangular shape.Under lip part 20A and state that body shell 22 contacts, be assembled with 4 shared bolts 14 in the part of four jiaos and the body shell 22 of lip part 20A.Thus, stay 18 is installed and is fixed in body shell 22.

And, in the situation that observe from the bearing of trend that extends configuration section 20, in main part 19 part consistent with the round center of the hollow space that extends configuration section 20, be formed with perforation main part 19 and be communicated with the circular patchhole 19B of hollow space 19A.In Fig. 2, patchhole 19B is formed in main part 19 and extends configuration section 20 sides.

In stay 18 was installed, main part 19 was assembled in gear housing 7(with reference to Fig. 1 by bolt (not shown)).Therefore, motor driver 21 that is speed-changing driving device 3 integral body are fixed in the outer surface of gear housing 7.Under this state, in gear selection axle 15, the part of speed change lever 16 sides is exposed to body shell 22 outsides.The part of exposing to the outside of body shell 22 in gear selection axle 15 is disposed in the hollow space 19A of the inside of extending configuration section 20 and main part 19.Under this state, the patchhole 19B of this partial insertion main part 19, and expose to the outside from the hollow space 19A of main part 19.Speed change lever 16 is disposed at the hollow space 19A of main part 19, exposes to the outside of body shell 22.And the other end 16B of speed change lever 16 19 the outside exposes from hollow space 19A to main part, with aforesaid

gearshift compressing tablet

12A, 12B, 12C(with reference to Fig. 1) in any one engage.

With reference to Fig. 4, motor driver 21 possesses: electric motor 23, gearshift shifting mechanism 24, selection shifting mechanism 25 and switching unit 26.

Electric motor 23 for example is made of brushless motor, is the parts for generation of rotary driving force.Electric motor 23 comprises: output shaft 130, motor rotor 131, motor stator 132, motor casing 133 and motor box 134.

Output shaft 130 extends along the prescribed direction that is left and right directions in Fig. 4.

Motor rotor 131 comprises back of the body yoke 135 and magnet 136.Back of the body yoke 135 is to make the maximized magnetic part of magnetic force of magnet 136 be used to the leakage of the flux that prevents electric motor 23.Back of the body yoke 135 is ring-type, at the thickness that axially has regulation.Magnet 136 is provided with a plurality of, to install along the mode that Zhou Fangxiang arranges at the outer circumferential face of back of the body yoke 135.Output shaft 130 inserts the hollow space of back of the body yokes 135, and motor rotor 131 is embedded in output shaft 130 outward in the mode that can separate thus, can centered by the axle center of output shaft 130, rotate integratedly with output shaft 130.

Motor stator 132 is made of not shown coil etc.

Motor casing 133 be along with the direction of output shaft 130 quadratures be above-below direction in Fig. 4 extend tabular.Be formed with at motor casing 133: circular patchhole 137, it runs through motor casing 133 in the direction parallel with the output shaft 130 of thickness direction; Inner peripheral surface 138 cylindraceous roughly, it divides patchhole 137.Inner peripheral surface 138 is in a plurality of location-appropriates ground undergauge or the hole enlargement of the depth direction of axial patchhole 137.At inner peripheral surface 138, in the part consistent with the middle part of the depth direction of patchhole 137, be provided with the outstanding flank 139 of radially inner side of the patchhole 137 of the circle in the patchhole 137.Patchhole 137 is separated in Fig. 4 of flank 139 1 side's sides first space 141 in left side by flank 139, and in Fig. 4 of flank 139 the opposing party's sides the second space 142 on right side.Embed in the first space 141 rolling bearing 143 that ring-type is arranged.In rolling bearing 143, the outer ring is embedded in the inner peripheral surface 138 in the first space 141.Left surface in Fig. 4 of the side of the first space 141 sides in motor casing 133 is formed with the rank 133A of section in the mode outstanding from this side, and these rank 133A of section forms cylindric with patchhole 137 coaxial shapes.In addition, in motor casing 133, in Fig. 4 of its end, body shell 22 is fixed in by bolt 149 in the end of up and down.In other words, motor casing 133 is installed on body shell 22 via bolt 149 in the mode that can load and unload.

Motor box 134 is for roughly cylindric, is formed with at an axial end opening 144 that expose the inside that makes motor box 134.In motor box 134, the discoideus part of a side opposite with axial opening 144 is to stop up the end 145 of the axial the other end of motor box 134.Round central position in the face of the right flank at the end 145 in Fig. 4 of the side of the inside of motor box 134 in the end 145 is formed with to the flank 146 of the side-prominent ring-type of opening 144.In the space 147 that is impaled by flank 146, embed the rolling bearing 148 that ring-type is arranged.In rolling bearing 148, the outer ring is embedded in the inner peripheral surface of flank 146.For motor box 134, the part of opening 144 edgeds is embedded in the rank 133A of section of motor casing 133 outward, this motor box 134 is installed on motor casing 133 thus, under this state, rolling bearing 143,148 coaxial shape ground configurations.Like this, can motor box 134 be installed on body shell 22 via motor casing 133.In addition, because the opening 144 of motor box 134 is stopped up by the rank 133A of section of motor casing 133, so can prevent in foreign matter intrusion motor box 134.

In electric motor 23, motor rotor 131 is contained in the inside of motor box 134 that is the zone between rolling bearing 143,148.In addition, aforesaid motor stator 132 is contained in motor box 134 and is installed on the inner peripheral surface of motor box 134, surrounds motor rotor 131 in non-contacting mode.And the integrated output shaft 130 of motor rotor 131 inserts rolling bearing 143,148 hollow space separately that is patchhole 137 and the space 147 of aforesaid motor casing 133.Therefore, motor rotor 131 and output shaft 130 are supported in the mode that can rotate by motor casing 133 and motor box 134 via rolling bearing 143,148.In output shaft 130, its part is compared the right side with motor casing 133 from the patchhole 137 of motor casing 133 to Fig. 4 of the outside of electric motor 23 and is exposed.In electric motor 23, if from accepting electric power from not shown power supply, motor rotor 131 and output shaft 130 one rotations, therefore produce rotation torque.Electric motor 23 is exported the rotary driving force that produces from output shaft 130.In addition, electric motor 23 can positive and negative rotation.

In addition, about electric motor 23, motor driver 21 comprises resolver 160.Resolver 160 is accommodated in the second space 142 of the patchhole 137 of motor casing 133.Resolver 160 comprises the outer resolver rotor 161 that is embedded in the ring-type of output shaft 130, and surrounds non-contactly the resolver stator 162 of resolver rotor 161.Resolver rotor 161 can rotate with output shaft 130 one.Resolver stator 162 is ring-type, is built-in with coil (not shown).Resolver stator 162 embeds the second space 142 of the patchhole 137 of motor casing 133.In detail, resolver stator 162 is embedded in the inner peripheral surface 138 of second space 142.Thus, can fix by motor casing 133 position of resolver stator 162.Resolver 160 detects the angle of swing of output shaft 130 by resolver rotor 161 and the voltage change that output shaft 130 one rotations produce.

Gearshift shifting mechanism 24 is to be transformed to for the rotary driving force with electric motor 23 make gear selection axle 15 around the power of central axis 17 rotations and it is passed to the mechanism of gear selection axle 15.Selecting shifting mechanism 25 is to be transformed to for the rotary driving force with electric motor 23 make gear selection axle 15 to the power of direction slip its axial M4 that is Fig. 4 and the paper quadrature and it is passed to the mechanism of gear selection axle 15.Switching unit 26 be for the transmission target of the rotary driving force of electric motor 23 at gearshift shifting mechanism 24 with select the mechanism of switching between shifting mechanism 25.Electric motor 23 is installed on body shell 22 from the outside, and gearshift shifting mechanism 24, selection shifting mechanism 25 and switching unit 26 are contained in body shell 22.

In body shell 22, the left side in Fig. 4 of electric motor 23 sides is formed with motor opening portion 13.Motor is sealed by roughly tabular lid 27 with opening portion 13.Lid 27 is parts of body shell 22.These body shell 22 and cover 27 respectively such as make cylinder iron, the metallic material such as aluminium forms, the periphery of lid 27 is chimeric with the motor of body shell 22 use opening portion 13.Be formed with the through hole 29 of circle on the left side shown in Figure 4 of the right side shown in Figure 4 that connects its internal surface and outer surface at lid 27.In addition, be fixed with the motor casing 133 of electric motor 23 at the outer surface of lid 27.Be exposed at body shell 22 outer modes with motor box 134 and motor casing 133 electric motor 23 is installed.The output shaft 130 of electric motor 23 is configured to gear selection axle 15 under overlooking, and becomes the relation that staggered angle is 90 ° of staggered angle in the situation that namely top is observed from Fig. 4.Therefore, extend with the left and right directions shown in Figure 4 of the direction of the regulation of axial M4 quadrature on output shaft 130 edges.The part that output shaft 130 exposes from electric motor 23 is via the through hole 29 of lid 27 inside to body shell 22, and is opposed with switching unit 26.

Body shell 22 is the case shape as described above, mainly accommodated forward end in gear selection axle 15 that is right inner side shown in Figure 1 zone, gearshift shifting mechanism 24, select each component parts of shifting mechanism 25 and switching unit 26.In detail, as shown in Figure 5, body shell 22 forms the case that right side in side that is Fig. 5 has the end.Body shell 22 mainly possesses: diapire 111; One end of diapire 111 that is upper end portion shown in Figure 5; Respectively from the other end that is a pair of sidewall 112,113 that erects in parallel to each other of underpart shown in Figure 5.Be formed with the opening portion 115 of being divided by sidewall 112,113 front end that is left part shown in Figure 5 etc. in body shell 22.Opening portion 115 is by flat lid 114 sealings.Lid 114 becomes the part of body shell 22.

As shown in Figure 5, the bottom surface 111A of the inboard of diapire 111 is formed by tabular surface.Be formed with for the middle part of supporting gear selection axle 15 that is than spline part 120 described later and tooth-strip part 122 bracing strut 116 near cardinal extremity that is Fig. 5 right-hand member at diapire 111.Bracing strut 116 forms with diapire 111, bloats more laterally than the face of a side opposite with the bottom surface 111A of the outer wall of diapire 111, forms for example rectangular-shaped (also with reference to Fig. 2).The lip part 20A of aforesaid installation stay 18 is fixed in bracing strut 116(with reference to Fig. 2 with bolt 14).Be formed with section at diapire 111 and bracing strut 116 and be the circular hole 104 of passing through.By hole 104, bracing strut 116 and diapire 111 connected along the left and right directions shown in Figure 5 of the thickness direction that becomes them that is with the direction of bottom surface 111A quadrature.Be inserted with gear selection axle 15 by hole 104.By hole 104 ratios, that the section diameter that passes through hole 104 obstructions of gear selection axle 15 is larger.Therefore, divide in diapire 111 and bracing strut 116 between the outer circumferential face of inner peripheral surface by hole 104 and gear selection axle 15, be formed with the gap S of the inside and outside connection that makes body shell 22.

By the embedded sliding bearing 101 that is fixed with of the inner peripheral surface in hole 104.Sliding bearing 101 will surround as the periphery middle part, closure 150 described later that is inserted in the gear selection axle 15 by hole 104, and the periphery of the closure 150 of this gear selection axle 15 is supported in sliding contact.

In bracing strut 116, be equipped with lock ball 106 midway at thickness direction that is left and right directions shown in Figure 5.Particularly, contain lock ball 106 in the through hole 105 of the outer circumferential face that connects inner peripheral surface by hole 104 and bracing strut 116.Lock ball 106 forms along the central axis by hole 104, namely with the direction of central axis 17 quadratures of gear selection axle 15 extend roughly cylindric, and be set to can move in the direction.The front end of lock ball 106 forms hemispherical, engages with following engagement groove 107.

Here, be called closure 150 with just in time stopping up the part by hole 104 in gear selection axle 15 that is axially being positioned in M4 with part by consistent position, hole 104.Closure 150 is and the integrated cylindrical body of the coaxial shape of gear selection axle 15 to be disposed at the position of stopping up by hole 104.In the periphery of closure 150, be formed with at the empty standard width of a room in an old-style house of axial M4 3 engagement grooves 107 that extend along circumferentially every ground.Each engagement groove 107 be set as spread all over all-round.Lock ball 106 moves along its long side direction, and its front end is given prominence to central axis 17 sides that is below shown in Figure 5 than the inner peripheral surface by hole 104 thus, and its front end engages with engagement groove 107, stops the movement of the axial M4 of gear selection axle 15.Thus, gear selection axle 15 is kept by constant force with the state that the movement to axial M4 is prevented from.But, under this state because only can prevent the movement that gear selection axle 15 meets accident, therefore even under this state, gear selection axle 15 around the rotation of axle and be also possible to the slip of axial M4.

As shown in Figure 5, in gear selection axle 15, than the part by forward distolateral body shell 22 inboards, hole 104, near the tooth-strip part 122 that is disposed with spline part 120 and small gear described later 36 engagements by hole 104 1 sides.In other words, in gear selection axle 15, spline part 120 and tooth-strip part 122 are positioned to body shell 22 inboards away from the position by hole 104, and particularly, tooth-strip part 122 is in to be compared with spline part 120 to body shell 22 inboards away from the position by hole 104.Spline part 120 and tooth-strip part 122 are all and the integrated cylindrical body of the coaxial shape of gear selection axle 15, in the length that axially has regulation.Spline part 120 and tooth-strip part 122 are larger than the section diameter except spline part 120 and tooth-strip part 122 in the axial region 15A of gear selection axle 15 that is gear selection axle 15.

At the outer circumferential face of spline part 120, spread all over universe ground along the protuberance of the axially extended muscle shape of spline 121 in the circumferentially spaced compartment of terrain and form.

At the outer circumferential face of tooth-strip part 122, be provided with rack tooth in its circumferential universe and form zone 125.Form in zone 125 at rack tooth, from the end of the axial M4 of tooth-strip part 122 that is left end shown in Figure 5 to the other end that is right-hand member shown in Figure 5, a plurality of rack tooths 123 extend in parallel to each other along central axis 17 respectively.Rack tooth forms the rack tooth 123 and small gear 36 engagements described later in zone 125.

Here, be contained in the part of body shell 22 in gear selection axle 15 by sliding bearing 101 sliding contact supportings.In addition, gear selection axle 15 to connect the lid 114 of body shell 22 with respect to tooth-strip part 122 left part in the front end of a side opposite to spline part 120 that is Fig. 5 outer outstanding to body shell 22.At this front end, via circular sliding bearing 102, be embedded with cap 100 cylindraceous outward.Gear selection axle 15 is also by sliding bearing 102 sliding contact supportings.

As shown in Figure 4, switching unit 26 possesses: the passing shaft 41 ground integrated with the coaxial shape of output shaft 130 of electric motor 23; Coaxial with passing shaft 41 and with can together with solid of rotation that is the first rotor 42 of the ring-type that arranges of the mode of rotating; Coaxial with passing shaft 41 and with can together with solid of rotation that is second rotor 44 of the ring-type that arranges of the mode of rotating; Be used for switching the clutch mechanism 39 of the link target of passing shaft 41 between the first rotor 42 and the second rotor 44.

Passing shaft 41 possesses: be arranged at electric motor 23 sides and the main shaft part 46 of the path that is connected with the output shaft 130 of electric motor 23; With the large-diameter portion 47 larger than main shaft part 46 diameters, this large-diameter portion 47 arranges with main shaft part 46 integratedly in the axial end portion of the first rotor 42 sides of main shaft part 46 that is right part shown in Figure 4.Passing shaft 41 is integrally formed with the output shaft 130 of electric motor 23, and passing shaft 41 and output shaft 130 pool and consist of in 1 shaft 151 that is Fig. 4 with the full part of spot printing.In other words, passing shaft 41 is by together being integrally formed axle 151 with output shaft 130 is integrally formed with output shaft 130.In shaft 151 in electric motor 23 sides that is Fig. 4 the part in left side be output shaft 130, in shaft 151 in a side opposite with electric motor 23 that is Fig. 4 the part on right side be passing shaft 41.Passing shaft 41 as described later, be used for the large-diameter portion 47 of the opposite side of output shaft 130 sides of electric motor 23 sides, the rotary driving force of electric motor 23 is passed to gearshift shifting mechanism 24 and selects shifting mechanism 25.

The first rotor 42 is disposed at a side opposite with electric motor 23 sides that is the right side in Fig. 4 with respect to passing shaft 41.The first rotor 42 possesses periphery from the axial end portion of electric motor 23 sides that is left part shown in Figure 4 to the first outstanding armature wheel hub 54 of radial outside.The first armature wheel hub 54 and the face of an opposite side of electric motor 23 sides of large-diameter portion 47 that is right side arranged opposite shown in Figure 4.

The second rotor 44 is disposed at a side opposite with the first rotor 42 with respect to the large-diameter portion 47 of passing shaft 41, i.e. left side in electric motor 23 sides that is Fig. 4, surround with contactless state passing shaft 41 main shaft part 46 around.The second rotor 44 possesses periphery from the axial end portion of a side opposite with electric motor 23 sides that is right part shown in Figure 4 to the second outstanding armature wheel hub 55 of radial outside.The second armature wheel hub 55 and the face of electric motor 23 sides of large-diameter portion 47 that is left side arranged opposite shown in Figure 4.In other words, the second armature wheel hub 55 of the first armature wheel hub 54 of the first rotor 42 and the second rotor 44 configures in the mode across the large-diameter portion 47 of passing shaft 41.Under this state, the first rotor 42, the second rotor 44, the ground configuration of the coaxial shape of passing shaft 41 can be rotated respectively around axle.

Clutch mechanism 39 possesses: interrupted with the first rotor 42, with the gearshift magnetic clutch 43 of passing shaft 41 and the first rotor 42 links or release; With interrupted with the second rotor 44, with the selection magnetic clutch 45 of passing shaft 41 and the second rotor 44 links or release.Gearshift magnetic clutch 43 can be passed to the first rotor 42 with the rotary driving force from electric motor 23 and make the first rotor 42 rotations.Select magnetic clutch 45 rotary driving force from electric motor 23 can be passed to the second rotor 44 and make the second rotor 44 rotations.

Gearshift magnetic clutch 43 possesses the first magnetic field 48 and the first armature 49.The first armature 49 is arranged at the face of axial opposite side of large-diameter portion 47 of passing shaft 41 that is the right side shown in Figure 4, separate slight gap and configure with the face of electric motor 23 sides of the first armature wheel hub 54 that is the left side shown in Figure 4, becoming with passing shaft 41 tabular for the roughly annulus of coaxial shape.The first armature 49 is solid of rotation of rotation together with large-diameter portion 47 with passing shaft 41.The first armature 49 uses the strong magnetism body formation such as iron.The first magnetic field 48 is ring bodies, and comprises: the section of observing from Zhou Fangxiang is the support 170 of ring-type that becomes the U word of lateral inclination; The section that is contained in support 170, observes from Zhou Fangxiang becomes the bobbin 31 of the ring-type of U word; The first inboard built-in electromagnetic coil 50 of the U word in bobbin 31.Be fixed in the inner peripheral surface of body shell 22 due to the outer circumferential face of support 170, body shell 22 is fixed in the first magnetic field 48.Inner peripheral surface at support 170 embeds the rolling bearing 154 that ring-type is arranged.The inner peripheral surface of support 170 is fixed in the outer ring of rolling bearing 154, and the inner ring of rolling bearing 154 is fixed in the first rotor 42.Thus, support 170 supports the first rotor 42 in the mode that can rotate.

Select magnetic clutch 45 to possess the second magnetic field 51 and the second armature 52.The second armature 52 is arranged at the face of axial side's side of large-diameter portion 47 of passing shaft 41 that is the left side shown in Figure 4, the face of a side opposite with the electric motor 23 of the second armature wheel hub 55 that is the right side shown in Figure 4 separate the slight gap configuration, become with passing shaft 41 tabular for the roughly annulus of coaxial shape.The second armature 52 is solid of rotation of rotation together with large-diameter portion 47 with passing shaft 41.The second armature 52 uses the strong magnetism body formation such as iron.The second magnetic field 51 is ring bodies, and comprises: the section of observing from Zhou Fangxiang is the support 171 of ring-type that becomes the U word of lateral inclination; The section that is contained in support 171, observes from Zhou Fangxiang becomes the bobbin 32 of the ring-type of U word; The second inboard built-in electromagnetic coil 53 of the U word in bobbin 32.Be fixed in the inner peripheral surface of body shell 22 due to the outer circumferential face of support 171, body shell 22 is fixed in the second magnetic field 51.Inner peripheral surface at support 171 embeds the rolling bearing 155 that ring-type is arranged.The inner peripheral surface of support 171 is fixed in the outer ring of rolling bearing 155, and the inner ring of rolling bearing 155 is fixed in the second rotor 44.Thus, support 171 supports the second rotor 44 in the mode that can rotate.

The first magnetic field 48 and the second magnetic field 51 are across large-diameter portion 47, the first armature wheel hub 54 and the second armature wheel hub 55, vertically, be the bearing of trend of the first rotor 42, the second rotor 44 and passing shaft 41 central shaft separately, configure side by side along left and right directions in Fig. 4.

Be connected with for the clutch driving circuit (not shown) that drives gearshift magnetic clutch 43 and select magnetic clutch 45 at clutch mechanism 39.About clutch driving circuit, be provided with ECU(Electronic Control Unit: electronic control unit) 88 and operating stem 93.ECU88 according to the corresponding automatic speed changing instruction of regulated procedure, operator to the operation of operating stem 93 and from resolver 160 inputs as the angle of swing of the output shaft 130 of testing result etc., drive via motor driver (not shown) and control electric motor 23, via clutch driving circuit, gearshift magnetic clutch 43 and selection magnetic clutch 45 are driven control.In addition, the with dashed lines arrow represents the signal of exporting and the signal that is transfused to ECU88 from ECU88 in Fig. 4.In addition, ECU88 can be fixed in car body, also can be contained in gear housing 7(with reference to Fig. 1) in.

In addition, at aforesaid clutch driving circuit, via power supply (not shown) service voltage from for example 24V such as wiring.Clutch driving circuit constitutes and comprises relay circuit etc., is set to for gearshift magnetic clutch 43 and selects magnetic clutch 45, can switch independently respectively power supply and power to stop.In addition, clutch driving circuit is not limited to drive the formation of shifting gears magnetic clutch 43 and selecting the both sides of magnetic clutch 45, the clutch driving circuit that also can be provided for independently driving the clutch driving circuit of gearshift magnetic clutch 43 and be used for driving selection magnetic clutch 45.

If to 43 power supplies of gearshift magnetic clutch, the first electromagnetic coil 50 is energized due to clutch driving circuit, the first electromagnetic coil 50 is in excited state, produces electromagnetic attraction in the first magnetic field 48 that comprises the first electromagnetic coil 50.And the first armature 49 is attracted and is out of shape to the first magnetic field 48 by the first magnetic field 48, with the first armature wheel hub 54 rubbing contact.Therefore, by switching on to the first electromagnetic coil 50, the large-diameter portion 47 of the passing shaft 41 of the first armature 49 sides is connected with the first rotor 42 of the first armature wheel hub 54, and passing shaft 41 links with the first rotor 42.Then, stop the voltage of the first electromagnetic coil 50 is supplied with, due to current flowing no longer in the first electromagnetic coil 50, the attraction force of the first armature 49 disappeared, the first armature 49 restores to original shape.Thus, gearshift magnetic clutch 43 becomes dissengaged positions from coupled condition, and passing shaft 41 is released from the first rotor 42.In other words, stop by power supply or the power supply of switching gearshift magnetic clutch 43, can switch coupled condition and the dissengaged positions of gearshift magnetic clutch 43.The gearshift magnetic clutch 43 of coupled condition can be passed to gearshift shifting mechanism 24 from passing shaft 41 with the rotary driving force from electric motor 23, and the gearshift magnetic clutch 43 of dissengaged positions can cut off from passing shaft 41 this rotary driving force with respect to gearshift shifting mechanism 24.

On the other hand, if due to the power supply of clutch driving circuit to selection magnetic clutch 45, the second electromagnetic coil 53 is energized, and this second electromagnetic coil 53 is in excited state, produces electromagnetic attractions in the second magnetic field 51 that is comprising the second electromagnetic coil 53.And the second armature 52 is attracted and is out of shape the second armature 52 and the second armature wheel hub 55 rubbing contact to the second magnetic field 51 by the second magnetic field 51.Therefore, by switching on to the second electromagnetic coil 53, the large-diameter portion 47 of the passing shaft 41 of the second armature 52 sides is connected with the second rotor 44 of the second armature wheel hub 55, and passing shaft 41 and the second rotor 44 link.Then, stop the voltage of the second electromagnetic coil 53 is supplied with, due at the second electromagnetic coil 53 current flowing no longer, the attraction force of the second armature 52 also disappeared, the second armature 52 restores to the original shape.Thus, select magnetic clutch 45 to become dissengaged positions from coupled condition, passing shaft 41 is released from the second rotor 44.In other words, stop by switching to power supply or the power supply of the second electromagnetic coil 53, can switch coupled condition and the dissengaged positions of selecting magnetic clutch 45.The selection magnetic clutch 45 of coupled condition can be passed to the rotary driving force from electric motor 23 and select shifting mechanism 25 from passing shaft 41, the selection magnetic clutch 45 of dissengaged positions can cut off from passing shaft 41 this rotary driving force with respect to selection shifting mechanism 25.

In the control of motor driver 21, usually, a side of only shift gears magnetic clutch 43 and selection magnetic clutch 45 optionally is connected.That is, when gearshift magnetic clutch 43 is in coupled condition, select magnetic clutch 45 to be in dissengaged positions, when selecting magnetic clutch 45 to be in coupled condition, gearshift magnetic clutch 43 is in dissengaged positions.

Embedding is fixed with the first circular gear 56 of path outside the periphery of the second rotor 44.The first gear 56 and the second coaxial setting of rotor 44.The first gear 56 is scrolled bearing 57 supportings.Embedded first gear 56 that is fixed in the outer ring of rolling bearing 57.The outer build-in of the inner ring of rolling bearing 57 is due to the main shaft part 46 of passing shaft 41 that is the periphery of shaft 151.

Gearshift shifting mechanism 24 mainly possesses: the ball screw framework 58 that will be transformed to straight-line retarder as rotatablely moving; The nut 59 that this ball screw framework 58 possesses; The arm 60 that is accompanied by moving axially of nut 59 and rotates around the central axis 17 of gear selection axle 15.

Ball screw framework 58 possesses: coaxial with the first rotor 42, namely with the axially extending lead screw shaft 61 of passing shaft 41; With the aforesaid nut 59 that screws togather via ball (not shown) and lead screw shaft 61.Lead screw shaft 61 is under the overlooking who observes above Fig. 4, and the staggered angle that becomes with gear selection axle 15 is the relation of the axle that staggers of 90 °.In other words, from lead screw shaft 61 axially and the direction of both sides' quadrature of the axial M4 of gear selection axle 15 that is observe from the top of Fig. 4, lead screw shaft 61 and gear selection axle 15 are mutually orthogonal.

Lead screw shaft 61 is scrolled moving and being supported of bearing 64,67 restrictive axial.Particularly, an end of lead screw shaft 61 that is left part shown in Figure 4 are scrolled bearing 64 supportings, and in addition, the other end of lead screw shaft 61 that is right part shown in Figure 4 are scrolled bearing 67 supportings.Lead screw shaft 61 by these rolling

bearing

64,67 supportings for can be around its central axis 80(with reference to Fig. 5) rotation.

The outer build-in of the inner ring of rolling bearing 64 is due to an end of lead screw shaft 61.In addition, body shell 22 is fixed in the outer ring of rolling bearing 64.In addition, in the engaging of the outer ring of rolling bearing 64, locking nut 66 is arranged, rolling bearing 64 is limited to axial the opposing party of lead screw shaft 61 that is right-hand movement shown in Figure 4.Than the rolling bearing 64 interior week by the partial insertion the first rotor 42 in electric motor 23 sides that is left side shown in Figure 4, link in the mode that can rotate together with this first rotor 42 in one end of lead screw shaft 61.The outer build-in of the inner ring of rolling bearing 67 is due to the other end of lead screw shaft 61.Body shell 22 is fixed in the outer ring of rolling bearing 67.

In a side of nut 59 that is nearby side shown in Figure 4 side be left lateral sides shown in Figure 5 and with the another side of this side thereof opposite one side that is inner side surface shown in Figure 4 be side, right side shown in Figure 5, outstanding being formed with along the direction of the axial M4 of gear selection axle 15 that is the columned outstanding axle 70 that extends with the direction of the paper quadrature of Fig. 4 respectively.In addition, only illustrate a side of outstanding axle 70 in Fig. 4.The a pair of coaxial shape of outstanding axle 70 ground configuration (with reference to Fig. 5).Due to the first engagement portion 72 of arm 60 described later, so nut 59 is limited around the rotation of lead screw shaft 61.Therefore, if lead screw shaft 61 rotations are accompanied by the rotation of lead screw shaft 61, nut 59 moves axially along lead screw shaft 61.In addition, in Fig. 5, about lead screw shaft 61 axially, be expressed as nut 59 be positioned at than the position of nut shown in Figure 4 59 away from the direction of the first rotor 42 that is shown in Figure 4 when right-hand nut 59 and the profile status of arm 60.

As Fig. 4 and shown in Figure 5, arm 60 possesses: for the first engagement portion 72 that engages with nut 59; Be used for chimeric the second engagement portion 73(of spline part 120 splines of gear selection axle 15 with reference to Fig. 5); The pitman 74 that connects the straight line shape of the first engagement portion 72 and the second engagement portion 73.It is rectangular-shaped that pitman 74 for example spreads all over its total length section.The second engagement portion 73 is ring-type, is embedded in the spline part 120 of gear selection axle 15 outward.Spline 121 engagements that inner peripheral surface in the second engagement portion 73 is formed with spline 75 with the spline part 120 of spline 75, the second engagement portions 73 realize that thus the second engagement portion 73 is chimeric with the spline of spline part 120.In addition, although that the second engagement portion 73 forms annulus is tabular, also can for as cylindric in the shape of the thickness that axially has regulation.

The first engagement portion 72 possesses mutual opposed a pair of supporting board 76 and with the cardinal extremity limit link board 77 connected to each other of a pair of supporting board 76, the side is looked becomes roughly U word shape.In addition, in Fig. 4, only illustrate a side supporting board 76.When each supporting board 76 is formed with the rotation of allowing each outstanding axle 70 with the U word engagement groove 78 of the peripheral snap of each outstanding axle 70.U word engagement groove 78 from Fig. 4 of the above-mentioned opposite side in cardinal extremity limit that is front-end edge and the limit, upper end Fig. 5 by otch.Therefore, the first engagement portion 72 and nut 59 be with can be around the relative rotation of outstanding axle 70, and engage along the mode that axially can move together of lead screw shaft 61.In addition, due to engaging of each U word engagement groove 78 and each outstanding axle 70, in nut 59, the first engagement portion 72 of arm 60 is limited around the rotation of lead screw shaft 61.Therefore, be accompanied by the rotation of lead screw shaft 61, nut 59 and the first engagement portion 72 moving axially along lead screw shaft 61.

As described above, the interior Zhou Huajian of the periphery of the spline part 120 of gear selection axle 15 and the second engagement portion 73 is chimeric.Particularly, be arranged at spline 75 engagements in spline 121 and the interior week that is arranged at the second engagement portion 73 of the periphery of spline part 120.At this moment, guarantee to be useful on the gap of engagement between spline 121 and spline 75.In other words, the second engagement portion 73 is can not relatively rotate with respect to this gear selection axle 15 and the peripheral bond of the spline part 120 of axially the relatively move state that is allowed to and gear selection axle 15.Therefore, gearshift magnetic clutch 43 is in coupled condition, if this nut 59 moving axially to lead screw shaft 61 followed in lead screw shaft 61 rotations, arm 60 rotates around the central axis 17 of gear selection axle 15, is accompanied by the swing gear selection axle 15 of this arm 60 around central axis 17 rotations.In other words, spline part 120 is accepted the rotary driving force of electric motor 23 from the second engagement portion 73, and gear selection axle 15 pivots thus.Thus, realize aforesaid gearshift action.

As shown in Figure 4, select shifting mechanism 25 to possess: aforesaid the first gear 56; Being set to can be with the pinion shaft 95 of the state rotation that extends in parallel with passing shaft 41; Coaxial be fixed near the assigned position of an end of pinion shaft 95 that is left part shown in Figure 4 and with the second gear 81 of the first gear 56 engagements; The coaxial small gear 36 that is fixed near the path of the assigned position of the other end of pinion shaft 95 that is right part shown in Figure 4, this selection shifting mechanism 25 consists of retarder as a whole.In addition, the second gear 81 forms larger than the first gear 56 and small gear 36 both sides' diameters.

One end of pinion shaft 95 that is left part shown in Figure 4 are fixed in rolling bearing 96 supportings of body shell 22.The outer build-in of the inner ring of rolling bearing 96 is due to an end of pinion shaft 95 that is left part shown in Figure 4.In addition, the outer ring of rolling bearing 96 is fixed in and is formed in the recess cylindraceous 97 that covers 27 inner face.In addition, the other end of pinion shaft 95 that is right part shown in Figure 4 are scrolled bearing 84 supportings.Because small gear 36 and tooth-strip part 122(are with reference to Fig. 5) mesh by pinion and rack, so selecting magnetic clutch 45 to be under coupled condition, if be accompanied by rotary pinion axle 95 rotation of passing shaft 41, accompany therewith, gear selection axle 15 to axial M4(with reference to Fig. 1) mobile.In other words, accept the driving force of electric motor 23 from small gear 36 due to tooth-strip part 122, gear selection axle 15 slides vertically.Thus, realize aforesaid selection action.In addition, even gear selection axle 15 slides, the second engagement portion 73 also is maintained with the spline of spline part 120 is chimeric.

Here, with reference to Fig. 2, aforesaid body shell 22 has the first body shell 22A and the second body shell 22B.In addition, the first body shell 22A and the second body shell 22B be by integrated, do not have the gap in these the seam of housing.Therefore, the inside and outside of body shell 22 can not be communicated with the seam of the second body shell 22B from the first body shell 22A.

The first body shell 22A is the box shape of roughly cuboid that becomes the right side part of body shell 22 in Fig. 2, mainly accommodates gear selection axle 15, ball screw framework 58, arm 60 and small gear 36(with reference to Fig. 4).The first body shell 22A by aforesaid diapire 111, sidewall 112, sidewall 113 and lid 114(with reference to Fig. 5) etc. division.

The second body shell 22B is from the first body shell 22A to overlooking down the hollow cylindrical that extends with direction that is the left side Fig. 2 of gear selection axle 15 quadratures.With the end face of the first opposite side of body shell 22A, be formed with aforesaid motor with opening portion 13 in the second body shell 22B, the motor casing 133(of electric motors 23 be installed with reference to Fig. 4 via lid 27 on this end face).With reference to Fig. 4, contain aforesaid switching unit 26, the first gear 81 etc. in the second body shell 22B.

Fig. 6 and Fig. 7 are the major component sectional views that describes for the assembling sequence to motor driver.

Below, to the major component in motor driver 21, in detail, to the clutch mechanism 39 of shaft 151 with switching unit 26 described with the order that electric motor 23 makes up.In addition, the large-diameter portion 47 in the passing shaft 41 of shaft 151 is equipped with the first armature 49 and the second armature 52 in advance.

With reference to Fig. 6, at first, with selection magnetic clutch 45 combinations in shaft 151 and clutch mechanism 39.Selecting magnetic clutch 45 packed into the second rotor 44, the first gear 56, rolling bearing 57,154.At this moment, shaft 151 is inserted in order the hollow space of the second rotor 44 of clutch mechanism 39 and the hollow portion of rolling bearing 57 from output shaft 130 sides.When the large-diameter portion 47 of the passing shaft 41 in shaft 151 near the second rotor 44 during to the degree in the gap of regulation, namely, be close to and keep some more than needed and when vacating the degree in the gap that can take in the second armature 52, shaft 151 finishes with the assembling of selecting magnetic clutch 45.At this moment, in shaft 151, passing shaft 41 links with selecting magnetic clutch 45, and the part of output shaft 130 sides of the part of the whole and passing shaft 41 of output shaft 130 is from selecting magnetic clutch 45 to expose.

Next, shaft 151 is inserted the hollow space of the resolver rotor 161 of resolver 160 from output shaft 130 sides, resolver rotor 161 is embedded in shaft 151 outside output shaft 130 sides, at this state, to selecting magnetic clutch 45 side actions.When outside be embedded in shaft 151 resolver rotor 161 come the position nearby of selecting magnetic clutch 45, when being near the state the outer boundary part that is embedded in output shaft 130 and passing shaft 41, resolver rotor 161 finishes (with reference to Fig. 7) to the assembling of shaft 151.

Next, in the patchhole 137 of motor casing 133, by rolling bearing 143 is embedded the first space 141, the resolver stator 162 embedding second spaces 142 with resolver 160 can turn to a unit 180 with motor casing 133, rolling bearing 143 and resolver stator 162 one.Hollow space by rolling bearing 143 and resolver stator 162 also has patchhole 137, and unit 180 becomes ring bodies.

Next, shaft 151 also had patchhole 137 from the rolling bearing 143 of the hollow space of output shaft 130 side plug-in units 180 and the hollow space of resolver stator 162.At this moment, 180 the hollow space in the unit, the initial hollow space that inserts resolver stator 162 of shaft 151.By like this, unit 180 is embedded in shaft 151 outside output shaft 130 sides, at this state, to selecting magnetic clutch 45 side actions.If resolver stator 162 surrounds resolver rotor 161, in other words, if the axially middle resolver rotor 161 of shaft 151 and the position consistency of resolver stator 162, the assembling of the 180 pairs of shafts 151 in unit finishes.This state constantly as shown in Figure 7.

Next, by shaft 151 is inserted the hollow space of the motor rotor 131 of electric motor 23 from output shaft 130 sides,,, move to selection magnetic clutch 45 sides under this state being embedded in shaft 151 outside motor rotor 131 from output shaft 130 sides.When outside be embedded in the output shaft 130 of shaft 151 motor rotor 131 when coming nearby the position of unit 180, motor rotor 131 finishes (with reference to Fig. 4) to the assembling of shaft 151.At this moment, resolver rotor 161 is embedded in than the part (with reference to Fig. 4) of motor rotor 131 near passing shaft 41 sides at home and abroad at shaft 151.

Next, will the motor box 134 of motor stator 132 and rolling bearing 148 be installed in advance, be installed on the motor rotor 131 that is assembled in shaft 151.At this moment, motor rotor 131 is accommodated in motor box 134 from the opening 144 of motor box 134.Motor rotor 131 is impaled by motor stator 132, and, the front end of the output shaft 130 of shaft 151 inserts the hollow space of rolling bearing 148, and, if the rank 133A of section that becomes motor casing 133 embeds the state of opening 144, the installation of 134 pairs of motor rotors 131 of motor box and motor casing 133 finishes, and electric motor 23 is completed (with reference to Fig. 4).

In addition, thereafter opposed with the large-diameter portion 47 of the passing shaft 41 of shaft 151 by the gearshift magnetic clutch 43 that makes the clutch mechanism 39 that the first rotor 42 and rolling bearing 154 are installed in advance, magnetic clutch 43 assemblings of shifting gears are linked to shaft 151 that is passing shaft 41.Perhaps, on any opportunity before the assembling of 134 pairs of motor rotors 131 of motor box finishes, the magnetic clutch 43 of shifting gears links also passable with shaft 151.In addition, in clutch mechanism 39, also can compare with selecting magnetic clutch 45, gearshift magnetic clutch 43 earlier links with shaft 151 that is passing shaft 41, also can and select magnetic clutch 45 both sides once to link with shaft 151 with gearshift magnetic clutch 43.

And, the assembly of switching unit 26, shaft 151, unit 180 and the electric motor 23 of the clutch mechanism 39 that assembles like this is assembled in body shell 22.Particularly, will be accommodated in body shell 22 as the passing shaft 41 of the part of clutch mechanism 39 and shaft 151, by bolt 149, the motor casing 133 in unit 180 is fixed in body shell 22(with reference to Fig. 4).By more than, as shown in Figure 4, the assembling of the motor driver 21 in the periphery of shaft 151, clutch mechanism 39 and electric motor 23 finishes.

As above, in this motor driver 21, be integrally formed axle 151 because passing shaft 41 and output shaft 130 are integrally formed, so there is not the bound fraction of passing shaft 41 and output shaft 130.Therefore, owing to there not being bound fraction, thereby shaft 151 correspondingly shortens, and 30mm left and right in this embodiment shortens.Can make motor driver 21 shaft 151 axially in overall dimensions diminish.In addition, needn't be in order in conjunction with passing shaft 41 and output shaft 130, both sides' axle to be implemented spline processing etc., or make passing shaft 41 and output shaft 130 via the joint combination of connector etc.Its result can suppress the maximization of the motor driver 21 that the formation due to the rotary driving force that transmits electric motor 23 causes, the rising of manufacture cost.In other words, can realize the minimizing of miniaturization, lightweight and the manufacture cost of motor driver 21.

In addition, by passing shaft 41 and output shaft 130 are integrally formed as shaft 151, can save the trouble of the phase place in the sense of rotation of adjusting passing shaft 41 and output shaft 130.

In addition, different from the utility model, for example, in the situation that by recess being set at output shaft 130 and passing shaft 41 being inserted this recess, passing shaft 41 is combined with output shaft 130 splines, because output shaft 130 chaps, so be difficult to be difficult to resolver 160 is arranged at output shaft 130 with being embedded in output shaft 130 outside resolver rotor 161.But, in the utility model, by passing shaft 41 output shafts 130 are integrally formed as shaft 151, shaft 151 integral body of output shaft 130 are attenuated, so can resolver 160 be set at output shaft 130.And, shorten and attenuate by making shaft 151 integral body, the inertia that the rotation of shaft 151 brings is reduced, thereby can correspondingly make the maximum output of electric motor 23 reduce but can satisfy the demand.

Here, for the resolver rotor 161 that makes resolver 160 can be embedded in output shaft 130 outward, motor rotor 131 can separate with the shaft 151 of output shaft 130.That is, not integrally formed with shaft 151.Therefore, when motor driver 21 assembling, like this motor rotor 131 is separated from shaft 151, just resolver rotor 161 can be embedded in shaft 151(with reference to Fig. 6 and Fig. 7 in the mode that not hindered by motor rotor 131 successfully).At this moment, can make the assembling of the part beyond the output shaft 130 of electric motor 23, and comprise that the assembling of the clutch mechanism 39 of resolver 160 carries out simultaneously, last, with electric motor 23 and clutch mechanism 39 combinations.

Above, a mode of execution of this model utility is illustrated, but can implements various design alterations in the scope of the project that claims are put down in writing.

Claims

1. motor driver, it is used for by making link have the gear selection axle of speed change lever to slide vertically to make described speed change lever to select action, and by making described gear selection axle pivot to make the action of shifting gears of described speed change lever, it is characterized in that, comprising:

Body shell, it accommodates described gear selection axle;

Electric motor, it is installed on described body shell, has output shaft, produces rotary driving force and it is exported from described output shaft;

Select shifting mechanism, it is contained in described body shell, described rotary driving force is transformed to the power that described gear selection axle is slided vertically, and it is passed to described gear selection axle;

The gearshift shifting mechanism, it is contained in described body shell, described rotary driving force is transformed to the power that described gear selection axle is pivoted, and it is passed to described gear selection axle;

Passing shaft, it is contained in described body shell, be integrally formed axle together with and described output shaft integrally formed with described output shaft, this passing shaft is used in a side opposite with described output shaft side, described rotary driving force being passed to described selection shifting mechanism and gearshift shifting mechanism;

Select magnetic clutch, it is contained in described body shell, and described rotary driving force is transmitted or cuts off from described passing shaft to described selection shifting mechanism; And

The gearshift magnetic clutch, it is contained in described body shell, and described rotary driving force is transmitted or cuts off from described passing shaft to described gearshift shifting mechanism.

2. motor driver according to claim 1, is characterized in that,

Described electric motor has: motor rotor, and it has back of the body yoke and is installed on the magnet of the outer circumferential face of described back of the body yoke, and is embedded in described output shaft outward in the mode that can separate; Motor stator, it surrounds described motor rotor; The motor box, it accommodates described motor rotor and motor stator,

This motor driver also comprises the resolver be used to the angle of swing that checks described shaft, and this resolver has: in described shaft with the resolver rotor that is embedded in the part of described passing shaft side outside described motor rotor is compared; With the resolver stator that surrounds described resolver rotor.

3. motor driver according to claim 2, is characterized in that,

Also comprise motor casing, it is installed on described body shell in the mode that can load and unload, is formed with the patchhole that inserts and supply described resolver stator to embed for described shaft, at this motor casing, described motor box is installed.