CN105934608A - Sensor mounting section structure for transmission - Google Patents

Abstract

This sensor mounting section structure for a transmission is configured in such a manner that a rotation sensor (53) for detecting the rotation of the rotating element of the transmission (M) is provided to a sensor mounting hole (54). The sensor mounting hole (54) is provided close to one axial end of the wall of a transmission case (11), the wall surrounding a transmission shaft (13). The transmission case (11) is provided with: a transverse bead (55) which, when viewed in the direction of the axis of the sensor mounting hole (54), extends near the sensor mounting hole (54) in the direction substantially parallel to the transmission shaft (13); and a bent bead (56) which extends from an end of the transverse bead (55) toward the transmission shaft (53), the transverse bead (55) and the bent bead (56) protruding outward. The transverse bead (55) and the bent bead (56) have formed therein a transverse hole (42) and a bent hole (57), which constitute an oil supply passage for supplying lubricating oil to the transmission (M).

Description

The sensor mount structure of variator

Technical field

The present invention relates to the sensor mount structure of a kind of variator.

The application based on March 28th, 2014 in (Japanese) Patent 2014-068392 of Japanese publication Number CLAIM OF PRIORITY, and quote its content in this application.

Background technology

Exist and be provided with for detecting change-speed gearing etc. in the variator driving rotation speed change make electromotor The situation (referring for example to patent documentation 1) of the turn-sensitive device of the rotation of rotary part.

In such variator, the wall of the transmission case of storage variable-speed shaft and change-speed gearing etc. is arranged Having the sensor mounting hole of through above-mentioned wall, turn-sensitive device is externally mounted in this sensor mounting hole. Turn-sensitive device makes the test section flank of tooth close to the detection object gear in transmission case of front, and The base end part exposed outside transmission case connects and has output line.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Laid-Open 2010-127265 publication

Summary of the invention

Invent technical problem to be solved

But, the sensor mounting hole formed in transmission case needs the internal diameter more than to a certain degree, In the variator that put-put etc. are used, outside the internal diameter of sensor mounting hole is relative to transmission case Shape size and thickness are big.Further, when the internal diameter of sensor mounting hole is relative to the overall dimensions of transmission case Time big with thickness, from the angle guaranteeing rigidity, need to be arranged in the axial middle section of transmission case.

But, according to the kind of variator, due to the pass of the position etc. of the change-speed gearing as detection object It is and exists and have to be arranged on turn-sensitive device the situation near the axial end portion of transmission case.Therefore, In the case of turn-sensitive device is arranged near the axial end portion of transmission case, it is possible to maintain higher The rigidity of transmission case becomes important.

Therefore, embodiments of the present invention provide the sensor mount structure of a kind of variator, even if In the case of turn-sensitive device is arranged near the axial end portion of transmission case, it is also possible to efficiency is good Ground improves the rigidity of transmission case.

For solving the technical scheme of technical problem

(1) the sensor mount structure of the variator of embodiments of the present invention is at storage variable-speed shaft It is provided with sensor mounting hole through for described wall on the wall of transmission case, and installs at described sensor Hole is provided with the turn-sensitive device of the rotation of the rotary part of detection variator, described sensor mounting hole It is arranged on the axial adjacent one end of the axial wall of described speed change of described transmission case, at described variator On case laterally expand ground be provided with cross projection and transfer projection, described in cross projection from along described biography The direction of the axis of sensor installing hole is observed, by neighbouring part court and the described change of described sensor mounting hole Speed axle direction that be substantially parallel extension, described turnover projection from the described end of projection of crossing towards variable-speed shaft side To extension, described in cross projection and described turnover projection is formed with composition and supplies lubricating oil to described variator Oily feed path horizontal perforation and turnover hole.

Thus, the neighbouring position of the sensor mounting hole in transmission case by hollow structure cross projection and Turnover projection is strengthened, and is provided with crossing as oil feed path crossing in projection and turnover projection Hole and turnover hole.Therefore, it is possible to utilize the perisporium of the oily feed path to variator supply lubricating oil to pass The neighbouring position of sensor installing hole is strengthened, so to be arranged on the axial end portion of change speed gear box attached with turn-sensitive device The most unrelated, it is possible to maintain the rigidity of change speed gear box higher.

(2) the sensor mount structure of the variator as described in above-mentioned (1), described in cross the institute of projection The thickness of the wall stating the outside of horizontal perforation can be thicker than around the described sensor mounting hole of described transmission case it The thickness of the wall in his region.

In this case, covering and the almost parallel extension of variable-speed shaft near sensor mounting hole it are set to The thickness crossing the wall outside the horizontal perforation of projection be thicker than the thickness in other region, it is possible to realize not Overall the thickening and maximize of change speed gear box can be caused, it is possible to efficiency improves the attached of sensor mounting hole well The rigidity of nearly part.

(3) the sensor mount structure of the variator as described in above-mentioned (1) or (2), from along institute The side, direction of the described variable-speed shaft stating transmission case is observed, and described turnover projection is formed as and described rotation Turn sensor the most overlapping.

In this case, at least one of side of turn-sensitive device is covered by projection of transferring, it is possible to profit The rigidity of the axial side of sensor mounting hole is improved well by turnover projection efficiency.

(4) construct such as the sensor mount of above-mentioned (1) to the variator according to any one of (3), Described transmission case constitutes the case of the power unit integrated with the crankcase of electromotor, at described power list Under the state that unit is equipped on vehicle, described in cross projection and be configurable on the vehicle front of described turn-sensitive device Near side.

In this case, when power unit is equipped on vehicle, because crossing projection to be arranged in rotation Turn near the front side of sensor, cross projection from from front it is possible to utilize when vehicle travels The flying dispersed is protected turn-sensitive device.

(5) the sensor mount structure of the variator as described in above-mentioned (4), the output of described variator Extraction unit is arranged on the axial end portion that described transmission case is configured with the side of described turn-sensitive device, in institute State the projecting outer side covers having described output extraction unit on the described axial end of transmission case Eaves portion, when described power unit is equipped on vehicle, described eaves portion is formed as surrounding described rotation Turn the lower rear of sensor.

In this case, when power unit is equipped on vehicle, the lower rear of turn-sensitive device Surrounded by the eaves portion in the outside of the output extraction unit covering variator, it is possible to utilize the protection of eaves portion to rotate The car body lower side of sensor.

(6) the sensor mount structure of the variator as described in above-mentioned (5), from along described variator The side, direction of the described variable-speed shaft of case is observed, and described eaves portion and described turnover projection are to constitute the side of V-arrangement Formula is formed, and observes from the side, direction of the described variable-speed shaft along described transmission case, described rotation sensing The V-arrangement that device can be configured to be made up of described eaves portion and described turnover projection is clamped.

In this case, the side of the test section of the front of turn-sensitive device is by eaves portion and turnover projection Portion of reporting to the leadship after accomplishing a task covers, it is possible to more firmly protect the test section of turn-sensitive device from outside.

(7) construct such as the sensor mount of above-mentioned (4) to the variator according to any one of (6), The position being formed with described sensor mounting hole of described transmission case is provided with towards described transmission case The inwardly projecting portion that inner side is protruded, the end of described sensor mounting hole can be on the top in described inwardly projecting portion Portion and opening are formed.

In this case, in the inwardly projecting portion being arranged in transmission case, within sensor mounting hole The open-ended mode of side is formed, it is possible to utilize inwardly projecting at the top in described inwardly projecting portion The axial supporting that portion's efficiency improves the rigidity around sensor mounting hole and turn-sensitive device well is firm Property.

(8) construct such as the sensor mount of above-mentioned (4) to the variator according to any one of (7), Top position between the bent axle and described variable-speed shaft of electromotor is configured with the rotation for keeping described bent axle Turn the balance axle of balance, described in cross projection and horizontal perforation is configurable on described balance axle and passes with described rotation Between sensor.

In this case, it is possible to effectively utilize the dead band between balance axle and turn-sensitive device, will travel across prominent Rise and configure compactly together with oil passage.

The effect of invention

According to the embodiment of the present invention, the neighbouring position of the sensor mounting hole of the wall of transmission case by The projection of crossing of hollow structure is strengthened with turnover projection, and is provided with work in crossing projection and turnover projection Horizontal perforation and turnover hole for oil passage.Therefore, it is arranged on transmission case despite turn-sensitive device axial Structure near end, but also be able to efficiency and improve the rigidity of transmission case well.

Accompanying drawing explanation

Fig. 1 is that the left side of the autobicycle that have employed power unit of an embodiment of the invention regards Figure.

Fig. 2 is the right side view of the power unit of an embodiment of the invention.

Fig. 3 is the left side view of the power unit of an embodiment of the invention.

Fig. 4 is the top view of the power unit of an embodiment of the invention.

Fig. 5 is that the V-V cross section with Fig. 2 with power unit of an embodiment of the invention is the most right The sectional view answered.

Fig. 6 be an embodiment of the invention with power unit with the VI-VI cross section of Fig. 2 substantially Corresponding sectional view.

Fig. 7 is that the VII arrow observation visual angle with Fig. 2 of the cylinder body of an embodiment of the invention is corresponding Upward view.

Fig. 8 is that the power unit of an embodiment of the invention is enterprising in the VIII-VIII part of Fig. 7 The partial cross section axonometric chart in row cross section.

Fig. 9 is the axonometric chart of right side half casing of the crankcase of an embodiment of the invention.

Figure 10 is the axonometric chart of left side half casing of the crankcase of an embodiment of the invention.

Figure 11 is that the surface of the main shaft using the power unit of an embodiment of the invention is as center Top view.

Figure 12 is to be removed by the turn-sensitive device of the power unit of an embodiment of the invention and at figure The partial cross section axonometric chart in cross section is carried out in the XII-XII part of 11.

Figure 13 is the solid removed by the turn-sensitive device of power unit of an embodiment of the invention Figure.

Figure 14 is the power unit of an embodiment of the invention with Figure 11 XIV-XIV cross section pair The sectional view answered.

Figure 15 is that the XV-XV cross section with Figure 11 of the power unit of an embodiment of the invention is corresponding Sectional view.

Detailed description of the invention

Hereinafter, come referring to the drawings embodiments of the present invention are illustrated.It should be noted that with On the appropriate location of the figure of following description, it is labeled with and represents that the arrow FR of vehicle front, expression vehicle are left The arrow LH of side, the arrow UP of expression vehicle up direction.

Fig. 1 is that the two of the power unit PU that have employed electromotor E that is equipped with representing present embodiment takes turns The figure of the left surface of motor vehicles 1.

In FIG, Wf, Wr be bearing in via front fork 2 front-wheel on not shown vehicle body frame, The trailing wheel being bearing on vehicle body frame via swing arm 3.It addition, H is disposed on turning above front fork 2 To handlebar, S is the seat that occupant takes a seat, and T is disposed on the fuel tank in S front, seat.Power unit On the lower position of the fuel tank T that PU is mounted in vehicle body frame central authorities.

Power unit PU utilizes variator M that the driving of electromotor E rotates speed change, and output it through Trailing wheel Wr it is transferred to by transmission mechanism.It should be noted that in the explanation of following power unit PU Before and after the direction such as left and right, except as otherwise noted, identical with direction time mounted on a vehicle.

Fig. 2, Fig. 3 are the figures of right flank and the left surface representing power unit PU.It addition, Fig. 4 is table Showing the figure of the upper surface of power unit PU, Fig. 5, Fig. 6 are that the V-V with Fig. 2 of power unit PU cuts The sectional view that face and VI-VI cross section are generally corresponding to.

The electromotor E of power unit PU has: crankcase 11 that bent axle 10 is rotatably supported, The cylinder portion 12 highlighted obliquely from crankcase 11 forward upper.Crankcase 11 doubles as the change of variator M Speed device case is while toe lateral is configured with bent axle 10, flat with bent axle 10 at the rear side of this bent axle 10 It is configured with main shaft 13 (variable-speed shaft) and the countershaft 14 of variator M capablely.Main shaft 13 and countershaft 14 by Crankcase 11 rotatably supports.As it is shown in figure 5, countershaft 14 is by outside for the left side wall of crankcase 11 Side is through, is provided with the sprocket wheel 15 of power extraction on the end that this is through.Sprocket wheel 15 is wound with chain 9, power is transferred to trailing wheel by this chain 9.

In this embodiment, countershaft 14 and sprocket wheel 15 constitute the power extraction portion of power unit PU.

Cylinder portion 12 has: cylinder body 17, and it has cylinder bore 17a movably received by piston 16； Cylinder head 18, it is arranged on the top of cylinder body 17, forms burning between the end face of cylinder head 18 and piston 16 Room 7；Cylinder cap 19, it is arranged on the top of cylinder head 18.As shown in Figure 6, cylinder head 18 and cylinder body 17 Top overlaps, at the upper surface of crankcase 11 by many (four) studs 20 together with cylinder body 17 (connection member) fastens jointly.

As it is shown in figure 5, piston 16 is connected via connecting rod 23 and bent axle 10 linkage, will be along with Moving back and forth at the piston 16 of combustor 7 work done (quick-fried) is transmitted to bent axle 10 as revolving force. It should be noted that the reference 8 in Fig. 5 represents faces the ignition spark plug that combustor 7 is arranged.

Cylinder head 18 is formed not shown air inlet and air vent, and is provided with described air inlet Not shown inlet valve and exhaust valve with exhaust orifice open/close.As shown in Figure 2 and Figure 3, air inlet connects has Constitute the air inlet pipe 6 of the gas handling system of electromotor E.Air vent connects the exhaust system constituting electromotor E The not shown exhaustor of system.It addition, as shown in Figure 6, it is provided with between cylinder head 18 and cylinder cap 19 The valve actuating mechanism 21 of opening and closing inlet valve and exhaust valve.Reference 22 expression in Fig. 6 is used for making gas The valve actuation cam of door drive mechanism 21 carries out the camshaft of action.Camshaft 22 is via timing chain 5 With bent axle 10 linkage be connected.

It should be noted that the electromotor E of present embodiment is water cooling type single Cylinder engine, cylinder body 17 sets Being equipped with cylinder bore 17a, the periphery in this cylinder bore 17a is formed with water jacket 50.In Fig. 2, Fig. 4, Fig. 5 Reference 51 be water pump, its by not shown cooler cooling cooling water be supplied to water jacket 50。

As shown in Figure 5, Figure 6, crankcase 11 is by divisional plane 11La, the 11Ra with bent axle 10 orthogonal As border, a pair half casings 11L, 11R of left and right segmentation are constituted.Left and right half casing 11L, 11R exists By being split by left and right in the plane of the cylinder central shaft C1 of cylinder body 17, half casing 11L, 11R of segmentation Connected fixing each other by not shown multiple bolts.The right side of right side half casing 11R is provided with bent axle cover 30, described bent axle cover 30 forms confined space between itself and half casing 11R.

As it is shown in figure 5, the right-hand end of bent axle 10 is by through for the sidewall of right side half casing 11R, pass through at this On logical end, the main driving gear 24 for being transmitted to the main shaft 13 of variator M by power is installed. It addition, the end on the left of bent axle 10 is by through for the sidewall of the half casing 11L in left side, in the end that this is through On the rotor 25a of electromotor 25 is installed.End and the peripheral part of rotor 25a are protected by by stator 25b The cover body 25c of the electromotor 25 held covers.

It addition, the end on the right side of the main shaft 13 of variator M is by through for the sidewall of right side half casing 11R. The end of the main shaft 13 of through right side half casing 11R is supported with primary driven gear 26, clutch 27, described primary driven gear 26 engages with the main driving gear 24 of bent axle 10 side, described clutch 27 Cut-out and the transmission of power is carried out by from outside operation.Primary driven gear 26 is rotatable Be bearing on main shaft 13, it is dynamic that clutch 27 is arranged between primary driven gear 26 and main shaft 13 On power bang path.Therefore, clutch 27 can according to from outside operation suitably switch primary from The transmission of the power between moving gear 26 and main shaft 13 and cut-out.

The main shaft 13 and countershaft 14 of variator M are provided with the master gear being made up of multiple change-speed gearings Group m1 and pinion group m2.In variator M, primary cog set m1 and the speed change of pinion group m2 Gear is selected by the operation of not shown switching mechanism, sets the arbitrary speed change including neutral gear whereby Shelves (gear).Therefore, variator M is when being provided with gear like this, when bent axle 10 Rotary power when being passed to main shaft 13 via clutch 27, by this rotary power according to setting than becoming Speed and from countershaft 14 to outside export.

It should be noted that the reference 28 in Fig. 5 is for making bent axle 10 revolve when foot pedal starting The pedal spindle turned.

As shown in Figure 2 to 4, the top position between the bent axle 10 in crankcase 11 and main shaft 13 It is configured with the balance axle 29 extended in parallel with bent axle 10.Balance axle 29 is by the rotatable twelve Earthly Branches of crankcase 11 Hold.Balance axle 29, via not shown gear and bent axle 10 synchronous rotary, thus offsets the rotation of bent axle 10 Change to move and maintain spin balancing.

It addition, as shown in Figure 6, the food tray 31 for storing lubricating oil it is provided with in the bottom of crankcase 11. Oil pump 32 (oil supply source) it is provided with in the top position of the food tray 31 of right side half casing 11R, described Oil pump 32 oil in food tray 31 is upwards drawn by this oil in power unit PU need lubrication portion Position pumping.The oil pump 32 of present embodiment is operated by rotary power from bent axle 10.

Oily feed path 33 in the power unit PU being connected with oil pump 32 is divided into crankshaft system oil passage 33C, valve-driving system oil passage 33B, crankshaft system oil passage 33C is from the discharge portion warp of oil pump 32 Cross the internal position needing lubrication around the bent axle such as crank-pin and collar 10 of bent axle 10 and supply oil supply, Described valve-driving system oil passage 33B from the top of crankcase 11 pars intramuralis through cylinder portion 12 to gas The position supply lubricating oil needing lubrication of door drive mechanism 21.And, at valve-driving system oil passage The midway of 33B connects to be had for supplying lubricating oil around the main shaft 13 and countershaft 14 isometry of variator M Bifurcated oil passage 34.

Fig. 7 is the upward view of the cylinder body 17 corresponding with the VII arrow observation visual angle of Fig. 2, and Fig. 8 is to scheme The VIII-VIII section of 7 is as the crankcase 11 in cross section and the axonometric chart of cylinder body 17.It addition, Fig. 9 It is in the way of substantially front, to observe the right side of crankcase 11 partly from side, rear side oblique upper by divisional plane 11Ra The axonometric chart of casing 11R, Figure 10 is towards in the way of substantially front in the past above skew back by divisional plane 11La The axonometric chart of the left side half casing 11L of crankcase 11 is observed in side.

As shown in Figure 6, a part of the valve-driving system oil passage 33B of oil feed path 33 is at bent axle The lower surface 17d (composition surface) of upper end 11Ru of case 11,11Lu (composition surface) and cylinder body 17 Between formed.As it is shown in fig. 7, about the oily passage between the composition surface of this crankcase 11 and cylinder body 17, It is arranged near the corner on the right side of the front portion of cylinder body 17 with inflow part 35a of the oil that oil pump 32 is connected, The oil-out portion 36a being connected with valve actuating mechanism 21 side is arranged on the limit of the rear left of cylinder body 17 On corner.As it is shown in fig. 7, about inflow part 35a of the oily passage between this composition surface and outflow portion 36a, Diagonal L 1 by cylinder central shaft C1 is configured in the scope of overlap.

Oily passage between above-mentioned crankcase 11 and the composition surface of cylinder body 17 has: the first oil passage 35, It is shape between the end face 11Ru and the lower surface 17d of cylinder body 17 of right side (side's) half casing 11R Become；Second oil passage 36, it is at the end face 11Lu of left side (the opposing party's) half casing 11L and cylinder body Formed between the lower surface 17d of 17.

In the present embodiment, the first oil passage 35 by the flat end 11Ru of right side half casing 11R and Groove 35c surround and formed, described groove 35c on the lower surface 17d of cylinder body 17 approximately along cylinder bore 17a Edge, periphery is formed.And, it is provided with and oil pump 32 in one end of the bearing of trend of the first oil passage 35 Inflow part 35a that side connects.

Second oil passage 36 is surrounded by the flat end 11Lu and groove 36c of left side half casing 11L and is formed, Described groove 36c on the lower surface 17d of cylinder body 17 approximately along cylinder bore 17a edge, periphery formed.? One end of the bearing of trend of two oil passages 36 is provided with the outflow portion being connected with valve actuating mechanism 21 side 36a。

It should be noted that in figure 6, pair cross-section is adjusted, so that the first oil passage 35 and the Two oil passages 36 are embodied on figure.

The first oil passage 35 inflow part 35a on the right side of the front portion of cylinder body 17 is right via the rear portion of cylinder body 17 Side extends to the neighbouring position of posterior central with arcuation.As shown in Fig. 6, Fig. 9, at this first oil passage The other end conducting of 35 has the one end in the first roundabout hole 37 formed on the casing 11R of right side half.

It addition, the second oil passage 36 is after outflow portion 36a of the rear left of cylinder body 17 to cylinder body 17 The neighbouring position of central authorities of portion extends with arcuation, and near this posterior central, position is terminated.Such as Fig. 6, Fig. 8 Shown in, the other end conducting of this second oil passage 36 has second formed on the casing 11L of left side half circuitous Go back to the one end in hole 38.

About the first roundabout hole 37, one end is by the end face 11Ru opening on the upside of the casing 11R of right side half The hole of generally L-shaped is constituted.The other end 37a in the first roundabout hole 37 is towards the divisional plane of right side half casing 11R 11Ra positions away from opening from upside end face 11Ru.

About the second roundabout hole 38, one end is by the end face 11Lu opening of the upside towards left side half casing 11L Generally L-shaped hole constitute.The other end 38a in the second roundabout hole 38 is towards the segmentation of left side half casing 11L The end face 11Lu from upside in the 11La of face positions away from opening.And, the first roundabout hole 37 another The combination by left and right half casing 11L, 11R of the other end in one end and the second roundabout hole 38, end is each other Dock and be connected with each other.

Therefore, the first oil passage 35 and the second oil passage 36 are via the first roundabout hole 37 and the second roundabout hole 38 are connected to each other.Thus, flow into the oil of inflow part 35a from oil pump 32 and pass sequentially through the first oil passage 35, first roundabout hole the 37, second roundabout hole the 38, second oil passage 36, outflow portion 36a is to cylinder portion 12 Valve actuating mechanism 21 supply.

It addition, about the second roundabout hole 38, the end face 11Lu on the upside of half casing 11L extends downward Vertical hole portion cross the cross-drilled hole portion being connected with the first side, roundabout hole 37, extend specific length the most again.

Bifurcated oil passage 34 is had connecting on the side that the bottom 40a of this extension 40 leaves, described point Fork oil passage 34 is for supplying oil supply around the main shaft 13 and countershaft 14 isometry of variator M.

Additionally, as it is shown in fig. 7, on four corners of the circumference of encirclement cylinder bore 17a on cylinder body 17 It is formed with the inserting hole 39 that aforesaid stud 20 is inserted.These four inserting holes 39 are arranged in cylinder On same pitch circle P centered by central shaft C1.And, inflow part 35a of aforementioned first oil passage 35 With each part of outflow portion 36a of the second oil passage 36 at ratio in above-mentioned region more outward for pitch circle P It is disposed in proximity on the position of inserting hole 39.It addition, about inflow part 35a and outflow portion 36a, as above Described, it is arranged in the diagonal L 1 by cylinder central shaft C1 in the scope of overlap, so the first oil is logical Road 35 and the second oil passage 36 across the position of divisional plane 11La, 11Ra of crankcase 11 around cylinder bore 17a strides across the length of almost half circumference and is formed.

Have from a part for the bifurcated oil passage 34 of the second roundabout hole 38 bifurcated: be connected with extension 40 Discharge orifice 41 and along left side half casing 11L divisional plane 11La formed channel slot 49.Channel slot 49 Fixing and with right side half casing 11R smooth divisional plane is linked by left and right half casing 11L, 11R 11Ra docks, and thus constitutes a part for passage towards variator M direction.

Discharge orifice 41 passes through perforate in the divisional plane 11La side of left side half casing 11L from the bottom of channel slot 49 Processing etc. connects with the side of extension 40.

As shown in Figure 10, channel slot 49 surround on the left of half casing 11L perisporium balance axle 29 outside In region, extend towards lower rear with arc-shaped.And, the end of the lower rear side of channel slot 49 with Left access opening 42 (horizontal perforation) and right access opening 43 (with reference to Figure 11) connect, described left access opening 42 With right access opening 43 on left side half casing 11L and right side half casing 11R to left and right direction with straight line Shape formed.Left access opening 42 is constituted needs the position of lubrication to supply to main shaft 13 surrounding of variator M A part for the passage of oil supply, right access opening 43 constitutes countershaft 14 surrounding to variator M needs lubrication Position for the part of passage of oil supply.

It addition, as shown in Figure 10, in the district of the divisional plane 11La of the perisporium in the face of left side half casing 11L Being formed with collecting tank 44 in territory, described collecting tank 44 is from the second roundabout hole 38 and LHA of channel slot 49 The rear side of territory bending extension extremely left access opening 42.The receipts of the bending extension extremely rear side of left access opening 42 The elongated end of collection groove 44 is to the inner space opening of crankcase 11.Collecting tank 44 plays the role that In channel slot 49 and the second roundabout hole 38 oil of flowing along divisional plane 11La, 11Ra to channel slot 49 When spilling with the outside in the second roundabout hole 38, collect this oil and the oil collected is restored to crankcase 11 In.

Figure 11 is the top view centered by the surface of the main shaft 13 of the variator M of power unit PU, Figure 12 is to observe from front upper side, left side the part corresponding with XII-XII cross section of Figure 11 is carried out cross section The axonometric chart of power unit PU.It addition, Figure 13 is to observe power unit PU from left back upper side Axonometric chart, Figure 14, Figure 15 are corresponding the cuing open in the XIV-XIV cross section with Figure 11 and XV-XV cross section View.

As shown in figure 11, the rear portion with left access opening 42 in the upper wall 11Le of left side half casing 11L On adjacent position, the rotation of the rotary part being provided with on the main shaft 13 for detecting variator M Turn-sensitive device 53.This turn-sensitive device 53 detects the detection near the axial left end on main shaft 13 The rotation of object gear.Upper wall as shown in Figure 12～Figure 14, near half casing 11L left end The sensor mounting hole 54 of through upper wall 11Le it is formed with on 11Le.Turn-sensitive device 53 is arranged on this biography In sensor installing hole 54, the test section 53a of front in crankcase 11 close to the detection on main shaft 13 The flank of tooth of object gear.As shown in figure 14, in the present embodiment, the axis of sensor mounting hole 54 C2 is towards the most forwards rolling tiltedly.Therefore, the test section 53a of turn-sensitive device 53 is somewhat Main shaft 13 direction is pointed under the state forwards tilted.

Observe from the direction of the axis C2 along sensor mounting hole 54, at the upper wall of left side half casing 11L Expand laterally on 11Le and be formed and cross projection 55, described in cross projection 55 by sensor mounting hole 54 Front side near crosscutting on the direction parallel with main shaft 13.This crosses projection 55 relative to half casing 11L Left end near upper wall 11Le upward with left side expand.And, on the left of half casing 11L End wall on to the left side expand be formed turnover projection 56, described turnover projection 56 is from crossing projection The outboard end of 55 extends about towards the axial left part of main shaft 13.

The above-mentioned left access opening 42 of the part constituting oil feed path 33 it is formed with in crossing projection 55 (horizontal perforation), is formed with the turnover hole 57 of upper end and the conducting of left access opening 42 in turnover projection 56. The lower end in turnover hole 57 turns on the axial left part of main shaft 13, will be via left access opening 42 and turnover hole 57 oil imported, being supplied to main shaft 13 surrounding by the passage in main shaft 13 needs the position of lubrication.

As shown in Figure 14, Figure 15, cross projection 55 and its internal left access opening 42 at balance axle 29 And extend to left and right direction between turn-sensitive device 53.It addition, about turnover projection 56 and its inside Turnover hole 57, than sensor mounting hole 54 more keep left side position on, from upper end towards bottom Tilt rearward.And, observe from the side, direction along main shaft 13, turnover projection 56 and rotation The test section 53a of the front of sensor 53 partly overlaps.Therefore, turnover projection 56 is at left side half chests On the left part of body 11L, a part for the sidepiece on the left of covering turn-sensitive device 53.

It addition, as shown in Figure 12, Figure 14, cross the thickness of wall on the upside of the left access opening 42 of projection 55 T1 is thicker than the wall in other regions around the sensor mounting hole 54 of left side half casing 11L.

It addition, the end on the left of the countershaft 14 of variator M from the sidewall of left side half casing 11L to side Prominent, its prominent part is covered by cover body wall 58.Cover body wall 58 has the left end from half casing 11L The eaves portion 58a of the arc-shaped that side is prominent.This eaves portion 58a covers protuberance and the sprocket wheel 15 (ginseng of countershaft 14 According to Fig. 5) the neighboring area of substantially first half, these are protected from outside.It addition, eaves portion 58a is formed in the way of surrounding the lower rear side of the test section 53a of turn-sensitive device 53.

Additionally, as shown in figure 15, a part of eaves portion 58a from the upper side of countershaft 14 by rotation sensing The left side side of the test section 53a of device 53 is crosscutting towards oblique inferoanterior side and extends.

Therefore, observing from the side, direction along main shaft 13, eaves portion 58a and turnover both projections 56 are with structure The mode of forming V-shape is formed.And, observe from the side, direction along main shaft 13, turn-sensitive device 53 quilt The V-arrangement being configured to be formed by eaves portion 58a and turnover projection 56 is clamped.

It addition, as shown in figure 14, the sensor that is formed at the upper wall 11Le of left side half casing 11L is pacified On the position in dress hole 54, be formed inside (towards lower section) towards crankcase 11 protruding to convex Go out portion 59.Form sensor mounting hole 54 to the top in inwardly projecting portion 59 from the upper surface of upper wall 11Le, The lower end of sensor mounting hole 54 is towards the open top of inner bulge 59.Therefore, rotation sensing is surrounded The sensor mounting hole 54 of the peripheral region of device 53 forms sufficiently long axial length.

It follows that the flowing of the oil at each position in the unit of the power unit PU of present embodiment is said Bright.

When bent axle 10 rotates because of the driving of electromotor E, oil pump 32 accept this bent axle 10 rotation and Carry out action.As shown in Figure 6, the oil that oil pump 32 will be stored in food tray 31 upwards draws, and should Oil is discharged to oil feed path 33 side.The oil discharged from oil pump 32 is at the right side half casing 11R of crankcase 11 Top to crankshaft system oil passage 33C and valve-driving system oil passage 33B bifurcated.Flow into crankshaft system The oil of the system oil passage 33C end on the right side of bent axle 10 passage in bent axle 10, is fed into song Bent axle 10 surroundings such as handle pin and collar need on the position of lubrication.

On the other hand, such as Fig. 6 as it is shown in fig. 7, flow into valve-driving system oil passage 33B oil from Through upwardly extending passage on the right side of the front portion of right side half casing 11R, flow into first by inflow part 35a Oil passage 35, the described first oil passage 35 end face 11Ru in the upside of right side half casing 11R and cylinder body Formed between the lower surface 17d of 17.

Flow into first oil passage 35 oil along first oil passage 35 around cylinder bore 17a towards posterior central side Flowing with arcuation, the position before the divisional plane 11Ra of right side half casing 11R becomes downward and flows into half The first roundabout hole 37 of casing 11R.

The oil flowing into the first roundabout hole 37 becomes in lower end with generally L-shaped towards divisional plane 11La direction, Divisional plane 11Ra, 11La joint portion each other across right side half casing 11R and left side half casing 11L And flow into the second roundabout hole 38 of left side half casing 11L.Flow into a part for the oil in the second roundabout hole 38 Become with generally L-shaped upward, and flow into the end face 11Lu on the upside of the casing 11L of left side half and cylinder body 17 Lower surface 17d between formed second oil passage 36.It addition, flow into the remaining oil in the second roundabout hole 38 Become flowing into extension 40 down, and flowed into by the discharge orifice 41 being arranged on the side of extension 40 The bifurcated oil passage 34 of variator M side.

Flow into from the second roundabout hole 38 second oil passage 36 oil from the rear center side of cylinder body 17 around cylinder bore 17a flows towards outflow portion 36a near left corner portion, rear portion, from outflow portion 36a in cylinder body 17 Passage is supplied to valve actuating mechanism 21 needs the position of lubrication.

It addition, as shown in Figure 10, Figure 11, discharge orifice is flowed into from the second roundabout hole 38 through extension 40 The oil of 41 passes through the channel slot 49 formed on the divisional plane 11La of left side half casing 11L and bifurcated flows into The left access opening 42 of balance axle 29 rear side and right access opening 43.

The oil flowing into left access opening 42 flows into turnover hole 57 in the axial left end region of left side half casing 11L In, become towards rear portion obliquely downward from the end in the left side of the main shaft 13 of variator M in main shaft 13 Passage to the main shaft such as bearing portion and change-speed gearing 13 surrounding need lubrication position supply.On the other hand, The oil flowing into right access opening 43 becomes towards rear in the axial right end region of right side half casing 11R, from change The right-hand end of the countershaft 14 of speed device M passage in countershaft 14 needs lubrication to countershaft 14 surrounding Position supply.

As it has been described above, in the power unit PU of present embodiment, in axial one end of crankcase 11 It is formed with sensor mounting hole 54, the neighbouring position of this sensor mounting hole 54 on neighbouring upper wall 11Le Strengthened with turnover projection 56 by the projection 55 of crossing of hollow structure, and crossing projection 55 and transferring prominent Rise and on 56, be provided with left access opening 42 (horizontal perforation) and the turnover hole 57 constituting oil feed path.Therefore, Can utilize sensor mounting hole 54 to main shaft 13 surrounding of variator M for the perisporium of passage of oil supply Neighbouring part efficiency strengthen well.Therefore, in this power unit PU, with turn-sensitive device 53 It is arranged near the axial end portion of crankcase 11 unrelated, it is possible to maintain sensor mounting hole 54 higher The rigidity of peripheral part.

Especially, in the power unit PU of present embodiment, it is set near sensor mounting hole 54 Cover the thickness crossing wall outside the left access opening 42 of projection 55 with the almost parallel extension of main shaft 13 T1 is thicker than the thickness of the wall in other region of surrounding of sensor mounting hole 54, it is possible to realize leading Cause thickening and maximizing of crankcase 11 entirety, it is possible to efficiency improves sensor mounting hole 54 well The rigidity of neighbouring part.

It addition, observe from the side, direction along main shaft 13, the power unit PU of present embodiment is formed For turnover projection 56 partly overlap with turn-sensitive device 53, so by transfer projection 56 can efficiency good Improve well the rigidity of sensor mounting hole 54 side.

It addition, in the power unit PU of present embodiment, cross projection 55 and be configured at power unit Be positioned under the state that PU is equipped on vehicle near vehicle front side, even if so when vehicle travels just in case Disperse flying from front, it is also possible to utilization is crossed projection 55 and protected from flying by turn-sensitive device 53 Protect.

Additionally, in the power unit PU of present embodiment, as the end of the countershaft 14 of output extraction unit The eaves portion 58a of the neighboring area of portion and covering sprocket wheel 15 is formed as being equipped on vehicle at power unit PU The lower rear side of turn-sensitive device 53 is surrounded under state, it is possible to by the car body of turn-sensitive device 53 Lower side utilizes eaves portion 58a efficiency to protect well.

Additionally, in the power unit PU of present embodiment, the test section 53a's of turn-sensitive device 53 The generally V-shaped portion of reporting to the leadship after accomplishing a task that side is made up of eaves portion 58a and turnover projection 56 covers, it is possible to will The test section 53a of turn-sensitive device 53 more firmly protects outside car body.

It addition, in the power unit PU of present embodiment, in the shape of the upper wall 11Le of crankcase 11 Become to have on the position of sensor mounting hole 54 the inwardly projecting portion being provided with the inner bulge towards crankcase 11 59, it is formed with sensor mounting hole 54, institute at the top in this inwardly projecting portion 59 in open-ended mode To utilize inwardly projecting portion 59 efficiency can improve the rigidity around sensor mounting hole 54 and rotation well Turn the axial supporting rigidity of sensor 53.

It addition, in the power unit PU of present embodiment, cross projection 55 and left access opening 42 configure Between balance axle 29 and turn-sensitive device 53, it is possible to effectively utilize balance axle 29 and rotate biography Dead band between sensor 53, configures compactly by oil passage.

It should be noted that the invention is not restricted to above-mentioned embodiment, can be in the scope without departing from its purport Inside carry out all design alterations.Such as, the vehicle carrying above-mentioned power unit is not limited to autobicycle, Can also be three-wheel (except after previous round two take turns in addition to also include the first two take turns after a vehicle taken turns) or carriage ?.

Description of reference numerals

10 bent axles

11 crankcases (transmission case)

13 main shafts (variable-speed shaft)

14 countershafts (output extraction unit)

15 sprocket wheels (output extraction unit)

29 balance axles

42 left access openings (horizontal perforation)

53 turn-sensitive devices

54 sensor mounting hole

55 cross projection

56 turnover projections

57 turnover holes

58a eaves portion

59 inwardly projecting portions

C2 axis

E electromotor

M variator

PU power unit

Claims (8)

1. the sensor mount structure of a variator,

The wall of the transmission case of storage variable-speed shaft is provided with sensor mounting hole through for described wall,

The rotation of the rotation being provided with the rotary part of detection variator in described sensor mounting hole passes Sensor,

The sensor mount structure of described variator is characterised by,

Described sensor mounting hole is arranged on the axial of the axial wall of described speed change of described transmission case Adjacent one end,

Be provided with while described transmission case expands laterally cross projection and turnover projection, described in cross Projection is observed from the direction of the axis along described sensor mounting hole, attached by described sensor mounting hole Nearly part is towards direction that be substantially parallel extension with described variable-speed shaft, and described turnover projection crosses projection from described End towards variable-speed shaft direction extend,

Described cross projection and described turnover projection is formed with and constitutes to described variator supply lubricating oil The horizontal perforation of oil feed path and turnover hole.

2. the sensor mount structure of variator as claimed in claim 1, it is characterised in that

The thickness of the wall in the outside of the described described horizontal perforation crossing projection is thicker than the institute of described transmission case State the thickness of the wall in other regions around sensor mounting hole.

3. the sensor mount structure of variator as claimed in claim 1 or 2, it is characterised in that

Observing from the side, direction of the described variable-speed shaft along described transmission case, described turnover projection is formed For the most overlapping with described turn-sensitive device.

4. the sensor mount of variator constructs as claimed any one in claims 1 to 3, its It is characterised by,

Described transmission case constitutes the case of the power unit integrated with the crankcase of electromotor,

When described power unit is equipped on vehicle, described in cross projection be arranged in described rotate pass Near the vehicle front side of sensor.

5. the sensor mount structure of variator as claimed in claim 4, it is characterised in that

The output extraction unit of described variator is arranged on described transmission case and is configured with described turn-sensitive device The axial end portion of side,

Projecting on the described axial end of described transmission case have described output extraction unit The eaves portion of outer side covers,

When described power unit is equipped on vehicle, described eaves portion is formed as surrounding described rotation and passes The lower rear of sensor.

6. the sensor mount structure of variator as claimed in claim 5, it is characterised in that

Observe from the side, direction of the described variable-speed shaft along described transmission case, described eaves portion and described turn Folding projection is formed in the way of constituting V-arrangement,

Observe from the side, direction of the described variable-speed shaft along described transmission case, described turn-sensitive device quilt The V-arrangement being configured to be made up of described eaves portion and described turnover projection is clamped.

7. the sensor mount structure of the variator as according to any one of claim 4 to 6, its It is characterised by,

It is provided with towards described speed change at the position being formed with described sensor mounting hole of described transmission case The inwardly projecting portion that the inner side of device case is protruded, the end of described sensor mounting hole is in described inwardly projecting portion Open top and formed.

8. the sensor mount structure of the variator as according to any one of claim 4 to 7, its It is characterised by,

Top position between the bent axle and described variable-speed shaft of electromotor is configured with for keeping described song The balance axle of the spin balancing of axle,

Described cross projection and horizontal perforation is arranged between described balance axle and described turn-sensitive device.