CN106567926A

CN106567926A - Transmission for vehicle

Info

Publication number: CN106567926A
Application number: CN201610881694.3A
Authority: CN
Inventors: 薮崎佑介; 更科俊平; 西部修; 西部修一
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2015-10-09
Filing date: 2016-10-09
Publication date: 2017-04-19
Anticipated expiration: 2036-10-09
Also published as: CN106567926B; JP2017072226A; JP6428556B2

Abstract

It is possible to provide a vehicle transmission that can realize both the miniaturization of the transmission case and the gearshift position detecting member in the transmission case. In the automatic transmission (3) provided with the parking lock mechanism (35), the outer diameter of the parking gear (36) is smaller than the outer diameter of a first auxiliary gear (17A), and the parking lever (38) and the shift gear (36) in the direction orthogonal to the axis direction, and is provided between the parking gear (36) and the first auxiliary gear (17A) in the axis direction of a countershaft.

Description

Transmission for vehicle

Technical field

The present invention relates to transmission for vehicle, the transmission for vehicle for more particularly to possessing parking lock mechanism.

Background technology

Possesses the transmission for vehicle that the known such as patent documentation 1 of transmission for vehicle of parking lock mechanism is recorded.Should Parking lock mechanism possesses：Parking gear；Securing rod, which is by chimeric with parking gear and discouraging of parking gear rotation；Stop Car bar, which is moved back and forth with motor linkage, makes securing rod and parking gear using the cone for being arranged on top ends It is chimeric or non-chimeric；And arresting lever, which is rotated with motor, and the rotation of motor is converted to stop rod thus Move back and forth.

In addition, parking lock mechanism has output corresponding with the anglec of rotation of the output shaft of the reducing gear of motor electric The turn-sensitive device of pressure, is configured to using the output voltage of turn-sensitive device confirm shift range.

Prior art literature

Patent documentation

Patent documentation 1：JP 2014-25563 publication

The content of the invention

Problems to be solved by the invention

The composition of mission case is not disclosed in this existing transmission for vehicle, rotation sensing is not clearly given Which kind of position relationship device is relative to mission case.

Therefore, the content recorded from citation 1 cannot deduce the miniaturization and energy that whether can realize mission case Turn-sensitive device is assemblied in into mission case.

The present invention is conceived to the problems referred to above and completes, and its object is to provide and a kind of can realize mission case Miniaturization can assemble the transmission for vehicle of drive range detection means again in mission case.

For solution to problem

The present invention is a kind of transmission for vehicle, is possessed：Drive shaft, its be supported in mission case and it is rotatable freely； Parking gear and multiple change-speed gearings, which is located at drive shaft；Park pawl, which is by discouraging of parking gear chimeric with parking gear Rotation；Stop rod, its operations linkage with gear level and is moved back and forth, and is made by being arranged at the cam member of top ends Park pawl is chimeric with parking gear or non-chimeric；And drive range detection means, which is fixed on mission case, detection The operating position of gear level, transmission for vehicle are characterised by that the external diameter of parking gear is formed as than in multiple change-speed gearings Largest outside diameter maximum outside diameter change-speed gearing it is little, stop rod be set on the direction orthogonal with the axis direction of drive shaft folder Between parking gear and drive range detection means, and parking gear and maximum are arranged on the axis direction of drive shaft Between external diameter change-speed gearing.

Invention effect

So, according to the present invention, can realize that the miniaturization of mission case can assemble gearshift again in mission case Position detection means.

Description of the drawings

Fig. 1 is the outline side-looking of the front portion of the vehicle of the transmission for vehicle for being equipped with an embodiment of the invention Figure.

Fig. 2 is the side view of the transmission for vehicle of an embodiment of the invention.

Fig. 3 is the figure of the transmission for vehicle for illustrating an embodiment of the invention, is unloaded after undercover member from perisporium Transmission for vehicle side view.

Fig. 4 is the figure of the transmission for vehicle for illustrating an embodiment of the invention, be Fig. 3 IV-IV directions to Depending on sectional view.

Fig. 5 is the figure of the transmission for vehicle for illustrating an embodiment of the invention, be Fig. 3 V-V directions to regarding Sectional view.

Fig. 6 is to see parking lock mechanism, speed change from below in the transmission for vehicle of an embodiment of the invention Mechanism and the figure of differential gear.

Fig. 7 be in the transmission for vehicle of an embodiment of the invention in parking spot when parking lock machine The side view of structure, gear and differential gear.

Fig. 8 be in the transmission for vehicle of an embodiment of the invention from terms of rear in parking spot when stop The sectional view of car locking mechanism and gear.

Fig. 9 is the state unloaded after variator left box body in the transmission for vehicle of an embodiment of the invention The side view of variator right case, gear and differential gear.

Figure 10 is the perisporium for unloading the state after undercover member in the transmission for vehicle of an embodiment of the invention Periphery side view.

Figure 11 be in the transmission for vehicle of an embodiment of the invention in whne dead ship condition when parking lock Determine the side view of mechanism, gear and differential gear.

Figure 12 is being in when dead ship condition from terms of rear in the transmission for vehicle of an embodiment of the invention Parking lock mechanism and gear sectional view.

Figure 13 be in the transmission for vehicle of an embodiment of the invention in activation point when parking lock The side view of mechanism, gear and differential gear.

Figure 14 be in the transmission for vehicle of an embodiment of the invention from terms of rear in activation point when The sectional view of parking lock mechanism and gear.

Figure 15 is the check plate and stop rod for illustrating the transmission for vehicle of an embodiment of the invention seen from above State variator right case cross-sectional view.

Figure 16 is the summary pie graph of the gear shift sensing device of the transmission for vehicle of an embodiment of the invention, quite In the XVI-XVI directions of Fig. 3 to regarding sectional view.

Figure 17 is the figure of the transmission for vehicle for illustrating an embodiment of the invention, is illustrated from front of vehicle The transmission for vehicle for arriving and the figure of the position relationship of car body.

Figure 18 is the figure of the transmission for vehicle for illustrating an embodiment of the invention, is illustrated from terms of the side of vehicle The transmission for vehicle for arriving and the figure of the position relationship of car body.

Figure 19 is the other shapes of figure of the transmission for vehicle for illustrating an embodiment of the invention, illustrates peristome With oil liquid level compared be arranged on top automatic transmission longitudinal section, the IV-IV directions equivalent to Fig. 3 to regarding cut Face figure.

Description of reference numerals：

1：Vehicle, 3：Automatic transmission (transmission for vehicle), 4：Mission case, 14：Countershaft (drive shaft), 4A：Half The outer end (outer end of the radial direction of mission case) in footpath direction, 17：Countershaft gear (change-speed gearing), 17A：1 gear countershaft tooth Wheel (maximum outside diameter change-speed gearing), 17a：Lower end (outer end of maximum outside diameter change-speed gearing), 36：Parking gear, 37：Parking spine Pawl, 38：Stop rod, 38A：Cam member, 44：Gear shift sensing device (drive range detection means), 40：Check plate, 41：Stop bullet Spring.

Specific embodiment

Hereinafter, using the transmission for vehicle of description of the drawings embodiments of the present invention.

Fig. 1～Figure 19 is the figure of the transmission for vehicle for illustrating an embodiment of the invention.

Explanation first is constituted.

In FIG, vehicle 1 possesses as the electromotor 2 of internal combustion engine and with electromotor 2 automatic transmission 3 for linking, and sends out The output of motivation 2 is delivered to (not shown) driving wheel by drive shaft (not shown) from automatic transmission 3.Present embodiment from Dynamic variator 3 constitutes the transmission for vehicle of the present invention.

Automatic transmission 3 is automatically carried out in MT (Manual Transmission by actuator described later 33：Become manually Speed) in the variable speed operation that carried out by driver, so as to be applied to carry out AT (Automatic Transmission：Automatically become Speed) as self-shifting AMT (Automated Manual Transmission：Automatic mechanical transmission).

In FIG, the surrounding baffle 1A before the front portion of vehicle 1 is provided with, vehicle 1 are divided into be equipped with by front surrounding baffle 1A and start The compartment 1C of the rear side of the engine room 1B and passenger riding of the front side of machine 2 and automatic transmission 3.

Additionally, in the present embodiment, in figure, note has the arrow of the word for being labelled with forward and backward, right, left, upper and lower, this It is (perpendicular with the fore-and-aft direction, left and right directions and above-below direction seen from the driver taken a seat on the driver's seat that compartment 1C possesses Nogata to) it is consistent.

In Fig. 2～Fig. 5, automatic transmission 3 possesses mission case 4.In the diagram, mission case 4 possesses variator Right case 6 and variator left box body 7.

In Fig. 5, Fig. 6, one-board clutch (not shown) is accommodated with variator right case 6, in variator left box body 7 It is accommodated with gear 9.

In Figure 5, differential gear 50 is accommodated with variator right case 6 and variator left box body 7, differential gear 50 is arranged At the rear of gear 9.

In the diagram, mission case 4 is divided into the sky of storage one-board clutch by the next door 6A of variator right case 6 Between 5A and storage gear 9 space 5B.

Variator left box body 7 possesses the annular wall 8 for surrounding gear 9, is the left case of variator in the left part of annular wall 8 The end of body 7 is provided with side wall 8A.

The power of electromotor 2 is input to gear 9 by one-board clutch by automatic transmission 3, using shifting shaft The work of 10～12 (with reference to Fig. 7, Fig. 9) and speed change is carried out in gear 9, using differential gear 50 by the rotation after speed change Driving wheel is delivered to by drive shaft.

In Figure 5, gear 9 is accommodated in variator left box body 7, possesses the input shaft 13, countershaft for extending in parallel respectively 14 and reverse gear shaft 15 (with reference to Fig. 6).

(not shown) bent axle of the input shaft 13 by one-board clutch with electromotor 2 links, from electromotor 2 to input shaft 13 transmission power.Countershaft 14 is arranged on the position than input shaft 13 on the lower, and reverse gear shaft 15 is arranged on than countershaft 14 on the lower Position.

In Figure 5, be provided with multiple input gears 16 on input shaft 13, input gear 16 with 1 gear input gear 16A, 2 Gear input gear 16B, 3 gear input gear 16C, 4 gear input gear 16D and 5 gear input gear 16E.

1 gear input gear 16A is configured in 2 side of electromotor, with being sequentially provided with 2 away from electromotor 2 in the axial direction Gear input gear 16B, 3 gear input gear 16C, 4 gear input gear 16D, 5 gear input gear 16E.

Input gear 16 is formed as from the 5 gear gear input gear 16A external diameters of input gear 16E to 1 tapering into successively.

1 gear input gear 16A and 2 gear input gear 16B are fixed in the gear input gear 16C of input shaft 13,3,4 gear inputs The gear input gear 16E of gear 16D and 5 are arranged to freely to dally relative to input shaft 13.

In Fig. 4, Fig. 5, multiple countershaft gears 17 are provided with countershaft 14.

Countershaft gear 17 is with 1 gear countershaft gear 17A, 2 gear countershaft gear 17B, 3 gear countershaft gear 17C, 4 gear countershaft teeth The gear countershaft gear 17E of wheel 17D and 5.

Specifically, in countershaft gear 17,1 gear countershaft gear 17A is located at 2 side of electromotor, with the axial direction It is provided with 2 gear countershaft gear 17B, 3 gear countershaft gear 17C, 4 gear countershaft gear 17D, 5 gear countershaft teeth away from electromotor 2 in order Wheel 17E.

Countershaft gear 17 is always engaged with the input gear 16 for constituting each shift gear of identical, 1 gear countershaft gear 17A and 2 Gear countershaft gear 17B be arranged to freely dally relative to countershaft 14, and 3 keep off countershaft gear 17C, 4 keep off countershaft gear 17D and 5 gear countershaft gear 17E are fixed in countershaft 14.Here, engagement refers to engaging for tooth and tooth.

Countershaft gear 17 is formed as from the 1 gear gear countershaft gear 17E external diameters of countershaft gear 17A to 5 tapering into successively, countershaft The largest outside diameter of 1 gear countershaft gear 17A in gear 17.

The countershaft 14 of present embodiment constitutes the drive shaft of the present invention.Input gear 16 constitutes the 1st gear teeth of the present invention Wheel, countershaft gear 17 constitute the change-speed gearing and the 2nd change-speed gearing of the present invention.1 gear countershaft gear 17A constitutes the maximum of the present invention External diameter change-speed gearing.

In figure 6, reverse gear shaft 15 is provided with reverse idler gear 18, and which can move freely in the axial direction.Fig. 4, In Fig. 5, reverse input gear 16F is fixed with input shaft 13, and reverse counter gear 17F is fixed with countershaft 14.

Reverse idler gear 18 by moving in the axial direction, and with the reverse input gear 16F located at input shaft 13 Engage with reverse counter gear 17F located at countershaft 14.

In the diagram, the bottom 8B of variator left box body 7 is formed in the bottom 6B positions by the top than variator right case 6 Put, the external diameter of variator left box body 7 is formed must be less than the external diameter of the peripheral part 6C of variator right case 6.

In the figure 7, the shifting shaft 11 and 5 that gear 9 possesses -4 gear of the gear of shifting shaft 10,3 of the gear of 1 gear -2 keeps off-falls The shifting shaft 12 of gear.Shifting shaft 10～12 is extended parallel to (figure 4 illustrates shifting shaft 10,12) with input shaft 13, can edge The axis direction for input shaft 13 is moved freely.

The one end of the shift fork head (fork head) 20 of the gear of 1 gear -2 is equipped with shifting shaft 10, on shifting shaft 11 It is equipped with the one end of the shift fork head 21 of the gear of 3 gear -4.Be equipped with shifting shaft 10 5 gears-reverse gear shift fork head 22 one End.

The one end of the selector fork (shift fork) 23 of the gear of 1 gear -2, selector fork are equipped with shifting shaft 10 23 the other end links (with reference to Fig. 4) with the hub sleeve (hub sleeve) 26 of -2 gear of 1 gear.As shown in figure 4, hub sleeve 26 with fall Gear countershaft gear 17F arranges integral.

The one end of the selector fork 24 of the gear of 3 gear -4, the other end of selector fork 24 are equipped with shifting shaft 11 Link (with reference to Fig. 5) with the hub sleeve 27 of -4 gear of 3 gear.

The one end of the selector fork 25 of 5 gears-reverse gear, the other end of selector fork 25 are equipped with shifting shaft 12 Link (with reference to Fig. 5) with the hub sleeve 28 that 5 keep off-reverse gear.

Do not scheme with the block selecting shifting shaft 31 for being arranged at gearshift 30 (with reference to Fig. 7) the other end of shift fork head 20～22 Hook (finger) portion for showing optionally is fitted together to.Block selecting shifting shaft 31 freely can revolve in the axial direction and around axis direction Turn.

When block selecting shifting shaft 31 is moved along axis direction, hook portion is chimeric with certain 1 in shift fork head 20～22, when Block selecting shifting shaft 31 around axis direction rotate when, hook portion makes certain 1 axis in input shaft 13 in shift fork head 20～22 Side moves up.

When certain 1 in shift fork head 20～22 is moved on the axis direction of input shaft 13, in selector fork 23～25 Certain 1 make certain 1 in hub sleeve 26～28 to move on the axis direction of input shaft 13 by certain 1 in shifting shaft 10～12 It is dynamic.

For example, when a side from hub sleeve 26 to the axis direction of input shaft 13 move when, idle running 1 gear countershaft gear 17A with Countershaft 14 is combined and is rotated together with countershaft 14.Thus, 1 gear is set up, and the 1 gear input gear 16A from input shaft 13 is to 1 gear countershaft Gear 17A transmits the power of electromotor 2.

In addition, when hub sleeve 26 is moved to the opposing party of the axis direction of input shaft 13,2 gear countershaft gear 17B of idle running Combined with countershaft 14 and rotated together with countershaft 14.Thus, 2 gears are set up, and the 2 gear input gear 16B from input shaft 13 are secondary to 2 gears Shaft gear 17B transmits the power of electromotor 2.

In FIG, instrument board 1D is provided with compartment 1C, be provided with by the gear level of operator in instrument board 1D 32。

Gear level 32 is operated into parking spot (P position) 32a, position of reversing gear (R positions) 32b, neutral gear position (N positions) Each gear in 32c and activation point (D positions) 32d.

In Fig. 2, Fig. 3, gearshift 30 is provided with the top of variator left box body 7, in Fig. 1, Fig. 2, in variator The top of casing 4 is provided with electric, hydraulic type or mechanical actuator 33.

Actuator 33 is operated into each in the position 32b that reverses gear, neutral gear position 32c and activation point 32d in gear level 32 During position, according to from ECU (not shown) (Electronic Control Unit：Electronic control unit) control signal that exports By block selecting shifting shaft 31 to shifting direction and block selecting direction operation.

Thus, certain 1 in selection hub sleeve 26～28, selected hub sleeve 26～28 is moved in axis direction and makes composition 1 gear input gear 16A of each shift gear, 2 gear input gear 16B, 3 gear input gear 16C, 4 gear input gear 16D and 5 keep off The gear countershaft gear 17A of input gear 16E and 1,2 gear countershaft gear 17B, 3 gear countershaft gear 17C, 4 gear countershaft gear 17D and 5 gears Countershaft gear 17E selectivitys are engaged, and thus set up each shift gear during advance.

In addition, by selecting reverse input gear 16F and reverse counter gear 17F and engaging which, and when making retrogressing Shift gear is set up.

In Figure 5, the end in 2 side of electromotor of countershaft 14 is fixed with the final of a part for composition countershaft gear 17 Input gear 17G, finally enters the final gear 34 that gear 17G is engaged with big footpath to this.

Differential gear 50 has：It is fixed with the case of differential 51 of final gear 34；Pinion shaft 52；A pair of little gears 53A, 53B, which is supported in pinion shaft 52, is freely rotatable；And a pair of side gears 54A, 54B, which is nibbled with little gear 53A, 53B Close.

These side gears 54A, 54B is linked with the drive shaft of left and right.The drive shaft of present embodiment is parallel with input shaft 13 Arrange, link with differential gear 50.So, the automatic transmission 3 of present embodiment is that horizontally set starts in FF vehicles The horizontal automatic transmission 3 assembled in machine 2.

Final gear 34 is engaged with gear 17G is finally entered, and differential gear 50 allows the differential of left and right sidesing driving wheel, and The rotation for finally entering gear 17G is delivered to into left and right sidesing driving wheel.

The parking lock mechanism 35 being provided with mission case 4 shown in Fig. 7, Fig. 8.Parking lock mechanism 35 includes：Stop Skiving wheel 36, park pawl 37, stop rod 38, supporting member 39, check plate 40, retaining spring 41, manual shaft 42, back-moving spring 43 and gear shift sensing device 44.

In Fig. 4, Fig. 5, parking gear 36 is assemblied in end (the vehicle-width direction left end of the bearing of trend of countershaft 14 Portion).Parking gear's receiving room 45 is provided with the outside of the side wall 8A of variator left box body 7, parking gear 36 is incorporated in parking Gear receiving room 45.

Side wall 8A is by parking gear's receiving room 45 and the variator left box body 7 of storage input gear 16 and countershaft gear 17 Space 5B is separated.Input shaft 13 is supported in the next door 6A and variator left box body 7 of variator right case 6 by bearing 13A, 13B Side wall 8A, be freely rotatable.

Countershaft 14 is supported in next door 6A and side wall 8A by bearing 14A, 14B, is freely rotatable, and parking gear 36 is arranged on ratio Positions of the bearing 14A by vehicle-width direction left.

In Fig. 3, Fig. 4, Tu10Zhong, the side wall 8A in the left part for being formed at variator left box body 7 is formed with perisporium 46, such as Shown in Fig. 4, the bottom 46A of the perisporium 46 and bottom 8B of variator left box body 7 is continuous, and in the vertical direction is formed in and bottom 8B Identical height.The bottom 8B of present embodiment constitutes the 1st bottom of the present invention, and bottom 46A constitutes the 2nd bottom of the present invention.

Perisporium 46 is more protruding outside to vehicle-width direction than side wall 8A, and perisporium 46 surrounds parking gear 36, park pawl 37, convex Wheel component 38A and supporting member 39.In Fig. 10, parking gear 36 peripheral part to form 36A with teeth at equal intervals, adjacent 2 tooth 36A between be formed with embeded slot 36B.

Park pawl 37 is supported in side wall 8A by park pawl axle 37A, during park pawl 37 with park pawl axle 37A is The heart swings.

Claw 37a is formed with park pawl 37, park pawl 37 with park pawl axle 37A pivots, so as to pawl Portion 37a becomes chimerism or non-chimerism with the embeded slot 36B of parking gear 36.

When claw 37a is chimeric with embeded slot 36B, the rotation of parking gear 36 is limited, and the rotation of countershaft 14 is also limited System.The gear 17G that finally enters of countershaft 14 is engaged with the final gear 34 of differential gear 50, therefore, final gear 34 Rotation is also limited, and is as a result that driving wheel is limited by the rotation of drive shaft.

In Fig. 10, back-moving spring 43 is arranged on the inside of perisporium 46, and back-moving spring 43 is so that claw 37a is from parking gear The mode that 36 embeded slot 36B departs from is energized clockwise to park pawl 37.

Supporting member 39 is arranged on the inside of perisporium 46, as shown in figure 8, the upper surface in supporting member 39 is formed with：Court To vehicle-width direction left toward the inclined conical surface 39a in top；And from the left end upper surface of conical surface 39a towards vehicle width side The horizontal plane 39b for extending to the left.

In the diagram, stop rod 38 is arranged at space 5B and parking gear's receiving room 45.Stop rod 38 possesses to vertical direction The vertical portion 38a of the extension and horizontal part 38b extended from the upper end of vertical portion 38a to horizontal direction, is formed as L-shaped shape.

Cam member 38A is equipped with the top ends of horizontal part 38b, cam member 38A can in the peripheral part of stop rod 38 Axis direction along stop rod 38 is moved freely.

In side, wall 8A is formed with peristome 8a.Stop rod 38 is through with peristome 8a, cam member 38A is through forming Parking gear's receiving room 45 is accommodated in the peristome 8a of side wall 8A.

As shown in figure 8, limiting section 38c is formed with vertical portion 38a sides in horizontal part 38b, in cam member 38A and limit Cam spring 38B is separated between position portion 38c.In addition, the top ends in horizontal part 38b are formed with limiting section 38d.

Cam spring 38B is energized to cam member 38A to cam member 38A being contacted with limiting section 38d, cam member 38A is contacted with limiting section 38d so as to extract from stop rod 38.Cam member 38A has cam surface 38e, cam surface 38e It is with going to limiting section 38d and more and more tapering shape (reference picture from limiting section 38c on the bearing of trend of stop rod 38 12)。

In the diagram, stop rod 38 is assemblied in check plate 40, and check plate 40 is assemblied in manual shaft 42.When manual shaft 42 rotates When, stop rod 38 is supported in supporting member 39 by check plate 40, is moved back and forth.Here, the support structure of present embodiment Part 39 constitutes the supporting member of the present invention.

The lower part of manual shaft 42 is projected than the bottom 8B of variator left box body 7 downwards, the manual shaft 42 of the protrusion Lower part constitutes protruding parts 42A.

In fig. 2, protruding parts 42A in manual shaft 42 are equipped with outer bar (outer lever) 47, outer bar 47 with handss The side that the axis direction of moving axis 42 is orthogonal upwardly extends.

Outer bar 47 is linked with the one end of cable component 48, in FIG, the other end and the gear level 32 of cable component 48 Link.In addition, cable component 48 is arranged in engine room 1B and compartment 1C through front surrounding baffle 1A, by gasket ring (not shown) It is assemblied in front surrounding baffle 1A.

When parking spot 32a of the gear level 32 in the side as direction of operating and the drive of the opposite side as direction of operating When being operated between dynamic position 32d, cable component 48 makes manual shaft 42 in maximum shift position and the rotation of the side of direction of rotation Turn to rotate between the maximum shift position of direction opposite side.

So, manual shaft 42 is rotated relative to variator left box body 7 with the operations linkage ground of gear level 32.

It is arranged between outer bar 47 and front surrounding baffle 1A to the flexure of cable component 48.Thus, send out in the operating of electromotor 2 In the case that motivation 2 is swung in front-rear direction, cable component 48 can be utilized to absorb the swing of electromotor 2, cable component can be prevented 48 make front surrounding baffle 1A rock in the longitudinal direction.

As a result, can prevent abnormal sound is sent in compartment 1C through front surrounding baffle 1A, and can prevent from cable component 48 forward surrounding baffle 1A apply load.

In Fig. 4, Fig. 7, Fig. 8, check plate 40 is upwardly extended in the side with the orthogonal axe of manual shaft 42, with manual shaft 42 rotation and around manual shaft 42 rotary shaft rotate.

In the case where gear is in activation point 32d, stop rod 38 is as shown in figure 14, the cam surface of cam member 38A 38e is an off with park pawl 37.

When operating gear level 32 to parking spot 32a from activation point 32d from the state, cable component 48 can be pressed Outer bar 47 shown in pressure Fig. 2.Now, manual shaft 42 rotates, and rotates check plate 40.

Thus, stop rod 38 is pressed to 37 side of park pawl using check plate 40.Now, as shown in figure 8, cam member The cam surface 38e of 38A rolls upper horizontal plane 39b from conical surface 39a.

When cam surface 38e rolls upper horizontal plane 39b, cam member 38A can push park pawl 37 to top, so that stopping Counter clockwise direction of the car ratchet 37 with park pawl axle 37A as fulcrum to Fig. 7 swings.

Thus, the claw 37a of park pawl 37 and the embeded slot 36B of parking gear 36 are chimeric, and discouraging of parking gear 36 Rotation.In this condition, cam member 38A is positioned between park pawl 37 and supporting member 39, so as to claw 37a without Method is extracted from embeded slot 36B.

Therefore, the rotation of countershaft 14 is limited, and finally enters differential gear 50 that gear 17G engages most with countershaft 14 The rotation of extreme gear 34 is limited.As a result, driving wheel is limited by the rotation of drive shaft, vehicle 1 stops.

Here, in the rotation position of parking gear 36, sometimes the claw 37a of park pawl 37 not with parking gear 36 Embeded slot 36B is chimeric but rolls the tooth top of tooth 36A.

As shown in figure 12, dead ship condition is treated this, cam member 38A do not roll upper horizontal plane 39b, cam member 38A Do not contact with park pawl 37.Now, cam member 38A overcomes the active force of cam spring 38B and to limiting section 38c sidesways It is dynamic, therefore cam spring 38B becomes the state compressed.

In this condition, when vehicle 1 in front-rear direction in any one party move when, claw 37a can be embedding with embeded slot 36B Close.Now, cam member 38A is energized by cam spring 38B, and cam member 38A rolls upper horizontal plane 39b, and is positioned to parking Between ratchet 37 and supporting member 39.

In fig .15, multiple fitting portion 40a～40d are formed with check plate 40, roller member 41A of retaining spring 41 can Each fitting portion 40a～40d is embedded in freely.

The one end of the bearing of trend of retaining spring 41 is assemblied in variator left box body 7.In the extension side of retaining spring 41 To the other end be equipped with roller member 41A, roller member 41A is contacted with check plate 40 so that check plate 40 is located at predetermined bits Put.

When check plate 40 rotates to position corresponding with parking spot 32a, fitting portion 40a is chimeric with roller member 41A, When check plate 40 rotates to position corresponding with the position 32b that reverses gear, fitting portion 40b is chimeric with roller member 41A.

When check plate 40 rotates to position corresponding with neutral gear position 32c, fitting portion 40c is chimeric with roller member 41A, When check plate 40 rotates to position corresponding with activation point 32d, fitting portion 40d is chimeric with roller member 41A.

So, check plate 40 makes roller member 41A when the gear shift operation according to gear level 32 rotates in each gear It is chimeric with fitting portion 40a～40d, thus switching sense of touch (so-called click feel) is provided to driver during gear shift operation.Here, only The assigned position of dynamic plate 40 refers to position corresponding with each gear as described above, it is also possible to especially only will be corresponding with parking spot Position be set to assigned position.

When gear level 32 is operated to other positions from parking spot 32a, cable component 48 can pull outer bar 47, make handss Moving axis 42 rotates.

Now, check plate 40 is rotated from the position shown in Fig. 7, Fig. 8, using check plate 40 by stop rod 38 to from parking spine The direction that pawl 37 leaves pulls.

Now, the cam surface 38e of cam member 38A is moved from horizontal plane 39b to conical surface 39a.When cam surface 38e is moved to During conical surface 39a, park pawl 37 be reset spring 43 energize and with park pawl axle 37A as fulcrum along Fig. 7 clockwise direction Swing.

Thus, as shown in figure 13, the claw 37a of park pawl 37 leaves from the embeded slot 36B of parking gear 36 and allows The rotation of parking gear 36.As a result, allowing the rotation of countershaft 14, and allow to finally enter gear 17G with countershaft 14 The rotation of the final gear 34 of engagement, it is allowed to which driving wheel is rotated by drive shaft.

In fig .15, in the inner side of side wall 8A, multiple rib 64A～64D, rib 64A～64D are provided with the bottom 8B of perisporium 8 The rigid function of perisporium 8 is improved with perisporium 8 is strengthened.Rib 64C, 64D and jut 67 are continuous, the upper end of manual shaft 42 It is embedded in jut 67 and is freely rotatable.

Rib 64B, 64C clip stop rod 38 and are located at the both sides (the fore-and-aft direction both sides of vehicle 1) of stop rod 38, along stopping The bearing of trend of car bar 38 extends, and one end (left part) 64B, 64c of the bearing of trend of rib 64B, 64C is positioned at peristome 8a's Both sides, and it is continuous with side wall 8A.

Rib 64A is formed as adjacent with rib 64B, and the bearing of trend along stop rod 38 together with rib 64B, 64C extends.Rib 64D is formed as adjacent with rib 64C, and the bearing of trend along stop rod 38 together with rib 64B, 64C extends.The rib of present embodiment 64B constitutes the 1st longitudinal wall of the present invention, and rib 64C constitutes the 2nd longitudinal wall of the present invention.

Confined planes 64s is formed with the top of the bearing of trend of rib 64B.Parking spot 32a is operated in gear level 32 And check plate 40, when being rocked to parking spot 32a, check plate 40 is contacted with confined planes 64s.Thus, the rotation of check plate 40 is limited System.

In addition, when check plate 40 is rocked to parking spot, roller member 41A of retaining spring 41 is embedding with check plate 40 Conjunction portion 40a is fitted together to, and when roller member 41A is chimeric with fitting portion 40a, check plate 40 is contacted with confined planes 64s.

In Fig. 1～Fig. 5, gear shift sensing device 44 is provided with below the bottom 8B of the annular wall 8 of variator left box body 7, Gear shift sensing device 44 is arranged on the outer diameter part with maximum outside diameter in the external diameter of mission case 4, that is, be arranged on and compare variator The peripheral part 6C of right case 6 is by the bottom 8B sides by annular wall 8 on the inside of the radial direction of variator left box body 7.

In figure 16, gear shift sensing device 44 possesses main body casing 44A, 42 insertion main body casing 44A of manual shaft.In the diagram, Main body casing 44A is separated from bottom 8B downwards, as shown in Fig. 2 main body casing 44A is fixed on variator left box body by screw 61 7 jut 7A.That is, the gear shift sensing device 44 of present embodiment is to separate with the bottom of annular wall 8 and be fixed in variator Left box body 7.

In figure 16, it is accommodated with the board member 44B of fan-shaped in main body casing 44A, in the bearing of trend of board member 44B End is formed with from board member 44B the convex portion 44a of parking spot (parking spot) detection extended towards manual shaft 42.

It is formed with from the convex portion 42a prominent to footpath direction of manual shaft 42 in manual shaft 42, convex portion 42a is together with manual shaft 42 Rotation.Convex portion 42a is contacted with convex portion 44a when manual shaft 42 rotates to position corresponding with parking spot.

When in convex portion, 42a is contacted with convex portion 44a, gear shift sensing device 44 is to ECU (not shown) (Electronic Control Unit：Electronic control unit) output current, thus, ECU identifies that current gear is parking spot.That is, in gear shift sensing device In 44, convex portion 42a is detected by convex portion 44a, thus, board member 44B and ECU becomes "on" position, and ECU identifies that gear is to stop Truck position.

The convex portion 44a of present embodiment constitutes the test section of the present invention, and convex portion 42a constitutes the detected portion of the present invention.

Additionally, gear shift sensing device 44 can also be configured to output voltage corresponding with each gear output to ECU.In short It, as long as gear shift sensing device 44 will detect that signal corresponding with the operating position of gear level 32, does not limit its composition.This The gear shift sensing device 44 of embodiment constitutes the shift detection component of the present invention.

In the diagram, the bottom 8B in the annular wall 8 of variator left box body 7 contains oily O.1 gear countershaft gear 17A and 2 gears The bottom immersion oil O of countershaft gear 17B, when countershaft 14 rotates, oily O is raised by 1 gear countershaft gear 17A and 2 gear countershaft gear 17B Rise.

The oil lifted up by 1 gear countershaft gear 17A and 2 gear countershaft gear 17B is to 1 gear countershaft gear 17A and 1 gear input gear The engaging piece of 16A, 2 gear countershaft gear 17B are lubricated with the engaging piece and hub sleeve 26 of 2 gear input gear 16B.

As shown in figure 9, final gear 34 immerses oily O.Trapping (not shown) is provided with the upper surface of variator left box body 7 Groove, is temporarily lodged in catch tank by the oily O that final gear 34 is lifted up.

In Figure 5, oilhole (not shown) is formed with the axis direction of input shaft 13 in the inside of input shaft 13, is caught The oil accumulated in collection groove imports oilhole from the left part of the bearing of trend of input shaft 13.

The oil of oilhole is imported to due to the centrifugal force of input shaft 13 and from the radial direction for being formed in input shaft 13 and oil The oilhole (not shown) of hole connection is discharged to the outside of input shaft 13.The oil in outside of input shaft 13 is discharged to 3 gear countershaft teeth The engaging piece of the gear input gear 16C of wheel 17C and 3, the engaging piece of 4 gear countershaft gear 17D and 4 gear input gear 16D, 5 gear countershafts The engaging piece and hub sleeve 27,28 of gear 17E and 5 gear input gear 16E is lubricated.

In the diagram, it is formed at positions of the peristome 8a of side wall 8A positioned at the lower end 36b than parking gear 36 on the lower. The external diameter of parking gear 36 is formed must be less than 1 of the largest outside diameter in countershaft gear 17 gear countershaft gear 17A.

The liquid level of the oily O of present embodiment when electromotor 2 stops positioned at the lower end 36b than parking gear 36 on the lower and Upper end than 1 gear countershaft gear 17A position on the lower.

In the diagram, stop rod 38 is set to be clipped in parking gear 36 on the direction orthogonal with the axis direction of countershaft 14 And gear shift sensing device 44 between.Stop rod 38 is arranged on than 1 gear countershaft tooth on the direction orthogonal with the axis direction of countershaft 14 Positions of the lower end 17a of wheel 17A by 14 side of countershaft.

And, stop rod 38 be arranged on the axis direction of countershaft 14 parking gear 36 and 1 gear countershaft gear 17A it Between.The lower end 17a of 1 gear countershaft gear 17A of present embodiment constitutes the outer end of the maximum outside diameter change-speed gearing of the present invention.

In the diagram, manual shaft 42 is in 44 phase of and stop rod 38 orthogonal with the axis direction of countershaft 14 and gear shift sensing device To side upwardly extend.In figure 6, it is set to be arranged to which by the swingable check plate 40 of oscillation center of manual shaft 42 Hunting range is between the gear countershaft gear 17A of parking gear 36 and 1.The manual shaft 42 of present embodiment constitutes the operation of the present invention Axle.

In figure 6, in the state of mission case 4 is seen from below, retaining spring 41 is crossing 1 gear countershaft gear 17A Mode arrange.As shown in figure 4, in the vertical direction, the upper end 41a of retaining spring 41 be arranged on than stop rod 38 upper end i.e. The upper end 38f of horizontal part 38b positions on the lower.

In Fig. 3, Tu10Zhong, support receiving portion 46B is integrally formed with perisporium 46, supports receiving portion 46B to support Supporting member 39.Receiving portion 46B is supported to be set on the orthogonal direction of the axis direction (vehicle-width direction) with countershaft 14 It is clipped between supporting member 39 and gear shift sensing device 44.Support receiving portion 46B of present embodiment constitutes the receiving portion of the present invention.

As shown in Figure 10, separate with park pawl 37 in cam member 38A and park pawl 37 is not embedding with parking gear 36 In the state of conjunction, park pawl 37 is contacted with supporting member 39.

In the state of park pawl 37 is so contacted with supporting member 39, park pawl 37 and supporting member 39 each Contact surface 37b, 39c are vertically formed with the thickness direction of gear shift sensing device 44 (vertical direction).

In Fig. 3, Tu10Zhong, perisporium 46 is with the peristome 46C closed by The lid component 62 (with reference to Fig. 4, Fig. 5), peristome 46C is formed at the vehicle-width direction left part of perisporium 46.

Multiple screwed hole 46Ds are formed with along opening 46c in the opening 46c of peristome 46C, The lid component 62 is by making Screw 63 is chimeric with screwed hole 46D and is secured to the opening 46c of peristome 46C.The screwed hole 46D of present embodiment and spiral shell Nail 63 constitutes the fastening part of the present invention.

Support receiving portion 46B be formed as being clipped in multiple screwed hole 46D below vertical direction and 2 adjacent spiral shells Between pit 46d.

Next, illustration.

Oily O is contained in the bottom 8B of the annular wall 8 of variator left box body 7, the oily O can be by 1 gear countershaft gear 17A, 2 gears Countershaft gear 17B and final gear 34 are lifted up.

Due to the gear that there is no the other side side engaged with parking gear 36, therefore need not be using oil O to parking gear 36 are lubricated.Thus, when in variator left box body 7 space 5B arrange parking gear 36 when, by 1 gear countershaft gear 17A, 2 The oily O that gear countershaft gear 17B and final gear 34 are lifted up can be contacted with parking gear 36.

Therefore, the oily O for lifting up contacts the stirring resistance increase that parking gear 36 can be caused to produce with parking gear 36, starts The fuel efficiency of machine 2 deteriorates.In the case that particularly when electromotor 2 starts, the temperature of the oil such as (during cold) is low, viscosity is high Oil can be contacted with parking gear 36, cause the stirring resistance that parking gear 36 produces further to increase.

Additionally, stirring resistance said here does not refer to the stirring resistance that parking gear 36 immerses oily O and produces, and refer to Contacted with parking gear 36 by the oil (circle in the air powder body) that 1 gear countershaft gear 17A, 2 gear countershaft gear 17B and final gear 34 are lifted up So as to the stirring resistance of the parking gear 36 of generation.

That is, the stirring resistance of present embodiment refers to following two stirring resistances：Parking gear 36 immerses oily O and produces Stirring resistance；And by 1 gear countershaft gear 17A, 2 gear countershaft gear 17B and the oil (circle in the air powder body) that lifts up of final gear 34 with Parking gear 36 is contacted so as to the stirring resistance for producing.

And in the automatic transmission 3 of present embodiment, mission case 4 possesses perisporium 46, perisporium 46 has and speed change The continuous bottom 46A of bottom 8B of the annular wall 8 of device left box body 7, surround parking gear 36 and park pawl 37.

And, parking gear 36 is assemblied in the end of the bearing of trend of countershaft 14, sets on the outside of the side wall 8A of annular wall 8 There is parking gear's receiving room 45 of storage parking gear 36.And, parking gear's receiving room 45 is input into tooth with storage by side wall 8A The space 5B of the inside of the variator left box body 7 of wheel 16 and countershaft gear 17 is separated.

Thus, parking gear's receiving room 45 and space 5B independences can be made, can be prevented by 1 gear countershaft gear 17A, 2 gear countershafts The oily O that gear 17B and final gear 34 are lifted up is contacted with parking gear 36.

Accordingly, it is capable to suppress the stirring resistance increase of the oil of the generation of parking gear 36, can prevent when countershaft 14 rotates to pair Axle 14 applies excessive load.Its result is that the fuel efficiency that can prevent electromotor 2 deteriorates.

In addition, according to the automatic transmission 3 of present embodiment, parking lock mechanism 35 has stop rod 38, stop rod 38 Moved back and forth with the operations linkage of gear level 32, using the cam member 38A located at top ends make park pawl 37 with Parking gear 36 is chimeric or non-chimeric.

And, side wall 8A has the peristome 8a for 38 insertion of stop rod, and peristome 8a is under than parking gear 36 End 36b positions on the lower, the diameter of parking gear 36 is formed must be less than 1 gear countershaft gear 17A.

Thus, when electromotor 2 stops, the liquid level of the oily O that the bottom 8B of annular wall 8 accumulates can be made positioned at than parking gear 36 lower end 36b is on the lower and than 1 gear countershaft gear 17A and the upper end position on the lower of 2 gear countershaft gear 17B.

Accordingly, it is capable to using by 1 gear countershaft gear 17A and 2 oil that lift up of gear countershaft gear 17B to 1 gear countershaft gear 17A with The engaging piece of 1 gear input gear 16A, the engaging piece and hub sleeve 26 of 2 gear countershaft gear 17B and 2 gear input gear 16B are well It is lubricated.

In addition, the oil mass for parking gear's receiving room 45 being flowed into through peristome 8a can be made to tail off, therefore can suppress parking tooth Wheel 36 immerses oil O, prevents parking gear 36 from producing the stirring resistance of oily O.

Particularly, parking gear's receiving room 45 of present embodiment with space 5B be it is independent, therefore, by 1 gear countershaft tooth The oil that the gear countershaft gear 17B of wheel 17A and 2 are lifted up will not immerse parking gear's receiving room 45, thus parking gear 36 can be suppressed to soak Enter oily O.

Thus, can prevent from being contacted with parking gear 36 by the oil that 1 gear countershaft gear 17A and 2 gear countershaft gear 17B are lifted up, The stirring resistance of the oil of the generation of parking gear 36 can be reduced.

Additionally, in the parking lock mechanism 35 of present embodiment, a part of component parts such as stop rod 38, check plate 40 Space 5B is arranged at, but the part for constituting parking lock mechanism 35 can also be located at parking gear's receiving room 45.

This way it is not necessary to form peristome 8a in side wall 8A, can prevent oil from flowing into parking gear's receiving room 45 from space 5B, Parking gear 36 can be reliably prevented and immerse oily O.Accordingly, it is capable to prevent from producing the stirring resistance of parking gear 36 due to oily O.

Here, from terms of the axis direction of countershaft 14, the both sides (vehicle 1 of the automatic transmission 3 of present embodiment in countershaft 14 Fore-and-aft direction) be provided with input shaft 13 and reverse gear shaft 15.Thus, as shown in Fig. 3, Figure 10, the swing of park pawl 37 will be constituted The park pawl axle 37A of axle is arranged below relative to parking gear 36.

Therefore, the stop rod 38 with the cam member 38A for swinging park pawl 37 is arranged on the lower section of countershaft 14, Manual shaft 42 and gear shift sensing device 44 are arranged on into the bottom 8B positions on the lower than annular wall 8.

Therefore, it is intended that both having avoided gear shift sensing device 44, manual shaft 42 from contacting with ground, i.e. both guaranteed automatic transmission 3 Minimum ground height, reduces the center of gravity of automatic transmission 3 again.

According to the automatic transmission 3 of present embodiment, the external diameter of parking gear 36 is formed must be less than 1 gear countershaft gear 17A, Stop rod 38 be set to be clipped on the direction orthogonal with the axis direction of countershaft 14 parking gear 36 and gear shift sensing device 44 it Between, and be arranged on the axis direction of countershaft 14 between the gear countershaft gear 17A of parking gear 36 and 1.

Thus, stop rod 38 can be arranged adjacent to countershaft 14, can be shortened from gear shift sensing device 44 to the vertical of countershaft 14 Size on direction.Therefore, manual shaft 42 and gear shift sensing device 44 are being arranged on into the bottom 8B positions on the lower than annular wall 8 In the case of putting, both it had been avoided that gear shift sensing device 44, manual shaft 42 were contacted with ground, i.e. both can ensure that minimum ground height, and The height step-down of mission case 4 can be made and the center of gravity of automatic transmission 3 is reduced.

Particularly, the automatic transmission 3 according to present embodiment, parking gear 36 is orthogonal with the axis direction of countershaft 14 Direction on be arranged on than 1 gear countershaft gear 17A lower end 17a by 14 side of countershaft position.

Thus, stop rod 38 can be arranged adjacent to into countershaft 14 more effectively, more effectively can be shortened from gear shift sensing device Size on 44 to the vertical direction of countershaft 14.

Therefore, as shown in Figure 17, Figure 18, can substantially ensure that and the gap between collision component 71, can ensure that enough Minimum ground height.In Figure 17, Tu18Zhong, automatic transmission 3 flexibly supports the longeron extended in the fore-and-aft direction along vehicle 1 72, collision is extended along the fore-and-aft direction of vehicle 1 in the lower section of longeron 72 with component 71.Automatic transmission 3 is arranged on collision group The top of part 71.

In order to not make automatic transmission 3 contact with collision component 71, need automatic transmission 3 from collision component 71 It is separately positioned upward.According to the automatic transmission 3 of present embodiment, can shorten from gear shift sensing device 44 to the vertical of countershaft 14 Size on direction, therefore, even if in the case where automatic transmission 3 to be arranged at the top of collision component 71, also can be true Protect minimum ground height and the height step-down of mission case 4 can be made and the center of gravity of automatic transmission 3 is reduced.

In addition, according to the automatic transmission 3 of present embodiment, with check plate 40, check plate 40 is set to manual shaft 42 is that oscillation center is swingable, and manual shaft 42 is converted to moving back and forth for park pawl 37, and check plate 40 sets The hunting range for being set to check plate 40 is kept off between countershaft gear 17A in parking gear 36 and 1.

Thus, check plate 40 can be made near countershaft 14, stop rod 38 countershaft 14 can be arranged adjacent to into reliably.Therefore, The size on from gear shift sensing device 44 to the vertical direction of countershaft 14 can more effectively be shortened.

In addition, according to the automatic transmission 3 of present embodiment, gear shift sensing device 44 is to separate with the bottom 8B of annular wall 8 Arrange.Thus, can suppress to transmit heat to gear shift sensing device 44 from the bottom 8B of annular wall 8, gear shift sensing device 44 can be protected not It is heated, can prevents the accuracy of detection of gear shift sensing device 44 from deteriorating.

And, the size on from gear shift sensing device 44 to the vertical direction of countershaft 14 can be shortened, therefore, speed change can be suppressed The size in the vertical direction of device casing 4 becomes big, can ensure that the distance of gear shift sensing device 44 and the bottom 8B of annular wall 8 again.

In addition, according to the automatic transmission 3 of present embodiment, gear shift sensing device 44 is arranged on outer than mission case 4 The peripheral part 6C with maximum outside diameter in all portions is by the position on the inside of the radial direction of variator left box body 7.

Thus, gear shift sensing device 44 can be prevented protruding outside to the radial direction of mission case 4, it is ensured that transmission case The minimum ground height of body 4, can make the height step-down of mission case 4 again and reduce the center of gravity of automatic transmission 3.

In addition, according to the automatic transmission 3 of present embodiment, in the state of mission case 4 is seen from below, stop bullet Spring 41 is arranged in the way of crossing 1 gear countershaft gear 17A, and in the vertical direction, the upper end 41a of retaining spring 41 are arranged on than stopping The upper end 38f of the horizontal part 38b of car bar 38 positions on the lower.

Thus, stop rod 38 can be arranged adjacent to into countershaft 14 reliably.That is, the retaining spring 41 of present embodiment is with horizontal stroke The mode for wearing 1 gear countershaft gear 17A is arranged, therefore, if the upper end 41a of retaining spring 41 is arranged on than horizontal part 38b's Upper end 38f positions by the top, then in order to not make retaining spring 41 be contacted with 1 gear countershaft gear 17A, and needed relative to stop The one end of spring 41 and make its other end incline downwards to arrange retaining spring 41.

Therefore, stop rod 38 can be caused to be arranged below relative to 1 gear countershaft gear 17A, stop rod 38 is disposed sufficiently far away from Countershaft 14, it is impossible to shorten the size on from gear shift sensing device 44 to the vertical direction of countershaft 14.As a result, due to minimum ground The relation of height, the height of mission case 4 can be uprised, and the center of gravity of automatic transmission 3 can be uprised.

In the automatic transmission 3 of present embodiment, in the vertical direction, the upper end 41a of retaining spring 41 are arranged on ratio The upper end 38f of the horizontal part 38b of stop rod 38 positions on the lower, therefore stop rod 38 can be arranged adjacent to into countershaft reliably 14.Thus, the minimum ground height of automatic transmission 3 had both been can ensure that, the center of gravity of automatic transmission 3 can have been reduced again.

In addition, according to the automatic transmission 3 of present embodiment, being formed in the left part of the annular wall 8 of variator left box body 7 There is a perisporium 46, perisporium 46 is included in highly to be located and the continuous bottom 46A of bottom 8B with the bottom 8B identicals of annular wall 8, surrounds Parking gear 36 and park pawl 37.

And, bottom 46 is formed as one with support receiving portion 46B being supported to supporting member 39, supports receiving portion 46B on the direction orthogonal with the axis direction of countershaft 14 is set to be clipped between supporting member 39 and gear shift sensing device 44.

Thus, with receiving portion 46B will be supported split to be set to perisporium 46 and compare, will not support receiving portion 46B with week Gap is formed between wall 46, thus the profile i.e. outer peripheral edge of perisporium 46 of perisporium 46 can be made near countershaft 14.

Accordingly, it is capable to stop rod 38 is arranged adjacent to countershaft 14, can shorten from gear shift sensing device 44 to the vertical of countershaft 14 Size on direction.Therefore, manual shaft 42 and gear shift sensing device 44 are being arranged on into the bottom 8B positions on the lower than annular wall 8 In the case of putting, the minimum ground height of automatic transmission 3 was both can ensure that, the height step-down of mission case 4 can have been made again and dropped The center of gravity of low automatic transmission 3.

In addition, according to the automatic transmission 3 of present embodiment, gear shift sensing device 44 has：Board member with convex portion 44a 44B；And convex portion 42a, which is rotated together with manual shaft 42, is contacted by the convex portion 44a with board member 44B and by convex portion 44a Electric-examination is measured.

Thus, in the case of the lower section of bottom 8B of annular wall 8 is arranged in gear shift sensing device 44 and manual shaft 42, automatically Variator 3 can also be such that the outer peripheral edge of perisporium 46 shortens on from gear shift sensing device 44 to the vertical direction of countershaft 14 near countershaft 14 Size, therefore the miniaturization of automatic transmission 3 can be realized.As a result, both can ensure that the minimum ground of automatic transmission 3 was high Degree, can make the height step-down of mission case 4 again and reduce the center of gravity of automatic transmission 3.

In addition, according to the automatic transmission 3 of present embodiment, separating with park pawl 37 in cam member 38A and stopping In the state of ratchet 37 is not chimeric with parking gear 36, park pawl 37 is contacted with supporting member 39.

And, in the state of park pawl 37 is contacted with supporting member 39, park pawl 37 is each with supporting member 39 Individual contact surface 37b, 39c are vertically formed with the thickness direction of gear shift sensing device 44.

Thus, in the state of compared to contacting with supporting member 39 in park pawl 37, park pawl 37 and supporting member 39 each contact surface 37b, 39c is that situation about being formed obliquely relative to the thickness direction of gear shift sensing device 44 is compared, and can be contracted Size on the vertical direction of short park pawl 37 and supporting member 39.

Accordingly, it is capable to make the outer peripheral edge of perisporium 46 more effectively near countershaft 14.

As a result, stop rod 38 can be arranged adjacent to countershaft 14 more effectively, can more effectively shorten from gearshift and pass Size on sensor 44 to the vertical direction of countershaft 14.

In addition, according to the automatic transmission 3 of present embodiment, perisporium 46 with the peristome 46C closed by The lid component 62, Multiple screwed hole 46Ds are formed with along opening 46c in the opening 46c of peristome 46C.

And, support receiving portion 46B to be formed as being clipped between adjacent 2 screwed hole 46d in multiple screwed hole 46D, lid Component 62 is fastened to the opening 46c of peristome 46C by screw 63.

Thus, can prevent thickening with the wall thickness of the perisporium 46 for supporting receiving portion 46B to form as one.Specifically, propping up Support receiving portion 46B is not between the adjacent 2 screwed hole 46d being clipped in multiple screwed hole 46D but is supporting receiving portion 46B Be formed about screwed hole in the case of, in order to form screwed hole, it is necessary to make the wall thickness of perisporium 46 thickening.

Therefore, when when being formed about screwed hole of receiving portion 46B is being supported, support the wall thickness of receiving portion 46B and for true The wall thickness for protecting screwed hole can be formed in perisporium 46, cause the outer peripheral edge of perisporium 46 away from countershaft 14.

And if by the adjacent 2 screwed holes 46d for supporting receiving portion 46B to be formed as being clipped in multiple screwed hole 46D it Between, then the wall thickness of screwed hole can be had no need to ensure that in the vicinity for supporting receiving portion 46B.

Accordingly, it is capable to prevent the wall thickness of the perisporium 46 of the periphery of support receiving portion 46B thickening, lean on can the outer peripheral edge of perisporium 46 Nearly countershaft 14, can shorten the size on from gear shift sensing device 44 to the vertical direction of countershaft 14.

Additionally, as shown in figure 19, it is also possible to form peristome 8c in the wall 8A of side and cause the inner circumferential lower end of peristome 8c Positions of the 8d positioned at the lower end 17a than 1 gear countershaft gear 17A by the top.So, can prevent from oil from flowing into through peristome 8c to stop Gear receiving room 45, parking gear 36 will not be stirred to oily O.Thus, can more effectively suppress what parking gear 36 produced Stirring resistance increase.

Additionally, in the automatic transmission 3 of present embodiment, input shaft 13 is arranged on above the vertical direction of countershaft 14, Therefore, the lower end 17a of 1 gear countershaft gear 17A in input gear 16 and countershaft gear 17 is located at bottom.Thus, in side wall In 8A formed peristome 8c and cause peristome 8c inner circumferential lower end 8d positioned at than 1 gear countershaft gear 17A lower end 17a by the top Position.

But, it is arranged on below the vertical direction of countershaft 14 in input shaft 13,5 in input gear 16 and countershaft gear 17 In the case that the lower end of gear input gear 16E is located at bottom, as long as forming peristome 8a in the wall 8A of side and causing peristome Positions of the inner circumferential lower end 8b of 8a positioned at the lower end than 5 gear input gear 16E by the top.

In this case, to I haven't seen you for ages by 5 gear input gear 16E and 4 gears of the following largest outside diameters of 5 gear input gear 16E Input gear 16D lifts up oily O.

In addition, according to the automatic transmission 3 of present embodiment, parking gear 36 is located at into countershaft 14, but can also be by Input shaft 13 constitutes the drive shaft of the present invention, and parking gear 36 is located at input shaft 13.

In addition, in the present embodiment, gear shift sensing device 44 is equipped with protruding parts 42A of manual shaft 42, but Can arrange makes the motor of the rotation of manual shaft 42 replacing gear shift sensing device 44.The motor is operable to manual shaft 42 Realize gear corresponding with the operation of gear level 32.

In addition, the transmission for vehicle of the application present invention is not limited to AMT, or AT, MT.

Although disclosing embodiments of the present invention, but it is clear that those skilled in the art can be without departing from the scope of the present invention Implement change in ground.Claim is intended to comprising all this amendments and equivalent.

Claims

1. a kind of transmission for vehicle, possesses：

Drive shaft, its be supported in mission case and it is rotatable freely；

Parking gear and multiple change-speed gearings, which is located at above-mentioned drive shaft；

Park pawl, which is by the rotation for limiting above-mentioned parking gear chimeric with above-mentioned parking gear；

Stop rod, its operations linkage with gear level and is moved back and forth, and is made by being arranged at the cam member of top ends State park pawl chimeric with above-mentioned parking gear or non-chimeric；And

Drive range detection means, which is fixed on above-mentioned mission case, detects the operating position of said gear shifting lever,

Above-mentioned transmission for vehicle is characterised by,

The external diameter of above-mentioned parking gear is formed as the maximum outside diameter change-speed gearing than the largest outside diameter in above-mentioned multiple change-speed gearings It is little,

Above-mentioned stop rod is set to be clipped on the direction orthogonal with the axis direction of above-mentioned drive shaft above-mentioned parking gear and upper State between drive range detection means, and be arranged on the axis direction of above-mentioned drive shaft above-mentioned parking gear and it is above-mentioned most Between big external diameter change-speed gearing.

2. transmission for vehicle according to claim 1, it is characterised in that

Above-mentioned parking gear is arranged on than above-mentioned maximum outside diameter speed change on the direction orthogonal with the axis direction of above-mentioned drive shaft Position of the outer end of gear by above-mentioned drive shaft side.

3. the transmission for vehicle according to claim 1 or claim 2, it is characterised in that have：

Operating shaft, which is orthogonal with the axis direction of above-mentioned drive shaft and in above-mentioned stop rod and above-mentioned drive range detection means Contra is upwardly extended, and is rotated by the gear shift operation of said gear shifting lever；And

Check plate, its with above-mentioned operating shaft as oscillation center and it is swingable freely, the rotation of aforesaid operations axle is converted to above-mentioned Park pawl is moved back and forth,

Above-mentioned check plate is arranged to make the hunting range of above-mentioned check plate to become with above-mentioned maximum outside diameter in above-mentioned parking gear Between fast gear.

4. transmission for vehicle according to claim 1, it is characterised in that

Above-mentioned drive range detection means are arranged to be separated with interval with above-mentioned mission case.

5. transmission for vehicle according to claim 1, it is characterised in that

Above-mentioned drive range detection means are arranged on the periphery with maximum outside diameter in the peripheral part than above-mentioned mission case Portion is by the position on the inside of the radial direction of above-mentioned mission case.

6. transmission for vehicle according to claim 3, it is characterised in that

Possesses retaining spring, above-mentioned retaining spring has：It is fixed on the one end of above-mentioned mission case；And with above-mentioned stop Plate contact so that above-mentioned check plate be located at assigned position the other end,

When seeing above-mentioned mission case from below, above-mentioned retaining spring is set to cross above-mentioned maximum outside diameter change-speed gearing,

In the vertical direction, the upper end of the vertical direction of above-mentioned retaining spring are arranged on the upper of the vertical direction than above-mentioned stop rod End position on the lower.

7. transmission for vehicle according to claim 4, it is characterised in that

When above-mentioned mission case is seen from below, above-mentioned retaining spring is set to cross above-mentioned maximum outside diameter change-speed gearing,