CN1997841A - Toroidal type stepless speed change device - Google Patents
Toroidal type stepless speed change device Download PDFInfo
- Publication number
- CN1997841A CN1997841A CNA2005800230036A CN200580023003A CN1997841A CN 1997841 A CN1997841 A CN 1997841A CN A2005800230036 A CNA2005800230036 A CN A2005800230036A CN 200580023003 A CN200580023003 A CN 200580023003A CN 1997841 A CN1997841 A CN 1997841A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- swing
- gudgeon
- recess
- speed change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
- F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
- F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
- F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
To prevent a power roller from being excessively inclined. Stop members fixed to opposite ends of trunnions are provided with convex sections. Further, the inner surfaces of end plates constituting a swing frame are provided with concave sections at positions opposed to the convex sections. The convex sections are inserted in the concave sections in such a manner as to allow the trunnions to displace in the direction of swing. Further, the lateral surfaces of the convex sections abut against the inner surfaces of the concave sections on the basis of the swing of the trunnions, thereby preventing the trunnions from swinging more than a predetermined degree.
Description
Technical field
The toroidal type stepless speed change device that the present invention relates to for example uses as the variable-speed unit of the automatic transimission that constitutes vehicle (automobile) usefulness.
Background technique
The speed changer of using as automobile and studied toroidal type stepless speed change device, in a part, implemented, as passenger car usefulness, known in the past that the assembling that for example is documented in the patent documentation 1 has been arranged is large-scale and produce the structure of variable-speed unit of the automatic transimission that is suitable as four-wheel-drive vehicle of the motor of bigger torque.Fig. 5～Fig. 8 represents to be documented in the toroidal type stepless speed change device of the four-wheel-drive vehicle of air displacement in this patent documentation 1, big.This toroidal type stepless speed change device 1 respectively the first input side panel 2 with and first export between the side panel 3 and be provided with 3 first live rolls 4,4, the second input side panel 5 with and second export between the side panel 6 and be provided with 3 second live rolls 7, constitute, carry out the transmission of power by amounting to 6 live rolls 4,7.
In order to constitute above-mentioned automatic transimission, in the most forward section portion of direction of transfer about power, be provided with as the torque converter 8 that starts clutch, in the carry-out part of this torque converter 8, be assembled with the first half 9a of the input shaft 9 that constitutes above-mentioned toroidal type stepless speed change device 1.Along with not shown travelling with the rotation of motor, this first half 9a is driven by above-mentioned torque converter 8 rotations.And on the rearward end of this first half 9a, concentric and relative rotation is supported with the latter half of 9b of above-mentioned input shaft 9 freely mutually.
And, between above-mentioned first half 9a and latter half of 9b, about the direction of transfer of power and connect to be provided with and be used for switching the front and back of advancing and retreating and advance switching unit 10.Advance switching unit 10 by selectively disconnecting, connect the forward clutch 11 that is respectively wet multi-plate clutch and retreating as these front and back of planetary gears, switch forward travel state and fallback state with clutch 12.
About the direction of transfer of power, the rear side that advances switching unit 10 in front and back as described above is provided with above-mentioned toroidal type stepless speed change device 1.And, make the input part of this toroidal type stepless speed change device 1, promptly with above-mentioned front and back advance part that the carry-out part of switching unit 10 is connected, and carry-out part, promptly be connected to front-wheel with on the live axle 13 and trailing wheel change continuously with the gear ratio between the part on the live axle 14.This toroidal type stepless speed change device 1 be located at above-mentioned latter half of 9b around.That is, near the portion of the rear and front end of this latter half of 9b so that the concave surface that the cross section the is respectively circular-arc state opposite each other that is inner side surface, mutually with one heart and the rotation of phase mutually synchronization supporting first, second two inputs side panel 2,5 freely.For this reason, in illustrated embodiment, the first input side panel, 2 splines that are located at front side (left side of Fig. 5) are fastened on constitute the base end part that the carrier 15 of switching unit 10 is advanced in above-mentioned front and back, and stop moving to the front side.With respect to this, the second input side panel 5 that is located at rear side (right side of Fig. 5) is supported on the rearward end of above-mentioned latter half of 9b via ball spline 16.And, the above-mentioned second input side panel 5 is pushed freely towards the above-mentioned first input side panel 2 by the deceleration loading device 17 of hydraulic type.
In addition, around the intermediate portion of above-mentioned latter half of 9b, be provided with supporting drum 18 with one heart with this latter half of 9b.This supporting drum 18 passes through the internal side diameter end of pillar 19,19 with its two end part support fixation.In addition, these each pillars 19,19 are fixed on outside diameter end portion supports separately on the support ring 20,20 described later, be configured to swing support freely also first, second each swing frame 21,22 of narration in the back, first, second each support frame 23,24.In addition, respectively rotation and axial displacement freely above-mentioned latter half of 9b is supported on above-mentioned supporting drum 18 the inboard, with above-mentioned first, second two export side panel 3,6 be supported on this supporting drum 18 around.In addition, this two output side panel 3,6 puts on axial load therebetween and carries out mutual relative rotation freely by the thrust-bearing supporting that is located between it.
In addition, above-mentioned front-wheel is fixed on the outer side surface side of the above-mentioned first output side panel 3 with output gear 25, make above-mentioned front-wheel use output gear 25 and above-mentioned front-wheel to use live axle 13 to engage with driven gear 26, rotate the above-mentioned front-wheel of driving live axle 13 freely by the above-mentioned first output side panel 3 via front-wheel.In addition, this front-wheel is freely passed to not shown front-wheel via front-wheel with differential gear 27 with the rotation of live axle 13.On the other hand, trailing wheel is fixed on the outer side surface side of the above-mentioned second output side panel 6 with output gear 28, this trailing wheel is engaged with driven gear 29 via trailing wheel with live axle 14 with above-mentioned trailing wheel with output gear 28, rotate the above-mentioned trailing wheel of driving live axle 14 freely by the above-mentioned second output side panel 6.In addition, this trailing wheel is freely passed to also not shown trailing wheel via not shown trailing wheel with differential gear with the rotation of live axle 14.
In addition, the inner side surface and above-mentioned first that respectively above-mentioned 3 first live rolls 4,4 is clamped in the above-mentioned first input side panel 2 is exported between the inner side surface of side panel 3, and the inner side surface and above-mentioned second that above-mentioned 3 second live rolls 7 is clamped in the above-mentioned second input side panel 5 is exported between the inner side surface of side panel 6.These first, second each live rolls 4,7 rotation of the internal surface by first, second each gudgeon 30,31 respectively are supported on freely with around each offset axis 32,32 of being provided with from the outstanding state of this inner side surface.These first, second each gudgeons 30,31 not can with the two end part that mutually are located at one heart separately on, above-mentioned 2,5,3,6 the central shaft of respectively coiling intersects, but meet at right angles or be that swing at the center near locational, first, second each pivot 33 (second pivot is diagram not) of reversing of the direction at right angle to be present in respect to these directions of respectively coiling 2,5,3,6 central shaft.In addition, above-mentioned first, second each gudgeon 30,31 is swung displacement respectively and is supported on freely on the two end part of first, second each swing frame 21,22.
And, with the intermediate portion supports of above-mentioned first, second each swing frame 21,22 each other, make it being that displacement is swung at the center freely with respect to the central axes of each dish 2,5,3,6 or near the back shaft 34,34 that is provided with on the parallel direction at above-mentioned each support ring 20,20 that constitutes above-mentioned first, second each support frame 23,24.Above-mentioned first, second each support frame the 23, the 24th, each support ring 20,20 of 1 pair of configuration in parallel to each other mutually combined via the outside diameter end of 3 pillar part 35,35 that constitute above-mentioned pillar 19 to form.Above-mentioned each back shaft 34,34 is about the circumferencial direction of above-mentioned each support ring 20,20, on the neutral position of above-mentioned each pillar part 35,35, be erected at constitute above-mentioned first, second each support frame 23,24 each 1 pair of support ring 20,20 each other.Thereby above-mentioned first, second each swing frame 21,22 swings are supported on along the circumferential direction adjacent pillar part 35,35 each other freely.
And then, make above-mentioned first, second each swing frame 21,22 under the effect of oil hydraulic cylinder 36a, 36b between the two end part of being located at these each swing frames 21,22 and above-mentioned each support ring 20,20, swing displacement freely.These each oil hydraulic cylinder 36a, 36b are located at respectively on the position of two end part coupling of the part of above-mentioned each support ring 20,20 and above-mentioned each swing frame 21,22.On the other hand, the two end part by above-mentioned first, second each swing frame 21,22 with bar 37a, 37b and above-mentioned each back shaft 34,34 abreast, be supported and fixed on the part with above-mentioned each oil hydraulic cylinder 36a, 36b coupling with the state at the two end part that connect above-mentioned first, second each swing frame 21,22.And, the piston 38a, the 38b that are inlaid among above-mentioned each oil hydraulic cylinder 36a, 36b are engaged with above-mentioned each bar 37a, 37b.When speed change, make and on each of above-mentioned each swing frame 21,22, be provided with each two to one of length direction among oil hydraulic cylinder 36a, the 36b of (be provided with each 4 on each of each swing frame, be provided with add up to 24), that be located at above-mentioned each swing frame 21,22 distolateral oil hydraulic cylinder 36a (36b) elongation as toroidal type stepless speed change device 1 integral body, and another oil hydraulic cylinder 36b (36a) is shunk, and it was both quantitative to make above-mentioned each swing frame 21,22 swing displacement on set direction.
In addition, have in above-mentioned each support ring 20,20 upper support and be used for the control valve 39 of giving row of pilot pressure oil to above-mentioned each oil hydraulic cylinder 36a, 36b.If make above-mentioned each swing frame 21,22 swing displacement to the row of giving of above-mentioned each oil hydraulic cylinder 36a, 36b by pressure oil, the camming surface 40 that then is located on the outer side surface that is supported in the gudgeon 30,31 on these each swing frames 21,22 makes spool 42 displacements of this control valve 39 via the plunger 41 that is attached to above-mentioned control valve 39, carries out the switching of above-mentioned control valve 39.The sleeve 43 that constitutes this control valve 39 with this spool 42 is displaced to both fixed positions in advance under the effect of control motor 44, so that can realize the gear ratio wanted when speed change.First cavity, 45 sides that such control valve 39 and control motor 44 constitute comprising the above-mentioned first input side panel 2 and the first output side panel 3 are provided with 1, and second cavity, 46 sides that constitute comprising the above-mentioned second input side panel 5 and the second output side panel 6 are provided with 1, are provided with two in whole toroidal type stepless speed change device 1.And, according to command signal from the not shown controller that is built-in with microcomputer, by the control valve 39 of 44 pairs of these first cavity, 45 sides of control motor of first cavity, 45 sides, by 44 pairs of these second cavity, 46 sides of control motor of second cavity, 46 sides control valve 39, phase mutually synchronization (situation of straight moving condition) or separately control (situation of rotation status).
Owing to constitute like this, so when speed change, according to the row of giving to the pressure oil of above-mentioned each oil hydraulic cylinder 36a, 36b, above-mentioned first, second each swing frame 21,22 is the center with above-mentioned each back shaft 34,34, the swing displacement was both quantitative on set direction.As a result, above-mentioned first, second each gudgeon 30,31 that is supported on these each swing frames 21,22 is that circular motion (rotatablely moving) is carried out at the center with above-mentioned each back shaft 34,34.And, by axial displacement about above-mentioned first, second pivot 33 based on above-mentioned first, second each gudgeon 30,31 of this circular motion, make the tangent direction on the side face that acts on above-mentioned each live roll 4,7 and the above-mentioned rolling contact section (tractive unit) of respectively coiling 2,5,3,6 inner side surface power towards variation.And, along with this power towards variation, above-mentioned first, second each gudgeon 30,31 is the center with first, second pivot 33 that axle is supported on above-mentioned first, second each swing frame 21,22, swing in the opposite direction mutually, the side face of above-mentioned first, second each live roll 4,7 and the butt change in location of above-mentioned each inner side surface, the rotational speed between first, second input side panel 2,5 and first, second output side panel 3,6 is than changing.
When the running of above-mentioned such toroidal type stepless speed change device in the past 1 that constitutes, by from the latter half of 9b of above-mentioned input shaft 9 together mutually the first input side panel 2 first, second two inputs side panel 2,5 of mutually synchronization rotation pass to the power of the above-mentioned first output side panel 3 via above-mentioned each first live roll 4,4, rotate and drive above-mentioned front-wheel with live axle 13.In addition, drive trailing wheel with live axle 14 by passing to the power of the above-mentioned second output side panel 6 from the second input side panel 5 via above-mentioned each second live roll 7, rotating.
Under the situation of toroidal type stepless speed change device as described above, when the torque drastic change by this toroidal type stepless speed change device or during the gear ratio drastic change etc., this gear ratio might take place surpass the overshoot that converges to set value after the set value.And, take place down if such mistake is punched in the state (gear ratio of toroidal type stepless speed change device is from 1 state that departs from significantly) that first, second each live roll 4,7 tilts significantly, then these each live rolls 4,7 might exceedingly tilt and make the side face of these each live rolls 4,7 reach first, second input side, outlet side easily respectively to coil 2,5,3,6 ora terminalis.Promptly, be formed on the side face of above-mentioned each live roll 4,7 and the contact ellipse on the above-mentioned rolling contact section (tractive unit) of respectively coiling 2,5,3,6 inner side surface and ride up to these easily and respectively coil on 2,5,3,6 the ora terminalis, easily at these each live rolls 4,7 and respectively coil the damage that takes place on 2,5,3,6 based on the edge load.Such damage can make these each live rolls 4,7 and respectively coil 2,5,3,6 durability reduction etc., is not preferred.
For example, as described in patent documentation 2, be supported under the situation of the structure on the dunnage that is subjected to housings support at gudgeon the supporting motive force roller, be used for limiting the joint unit that this gudgeon is exceedingly swung by on this dunnage etc., being provided with, can prevent this gudgeon and the above-mentioned live roll that is supported on this gudgeon exceedingly tilts.But, under the situation of the structure on the two end part above-mentioned Fig. 5～as shown in Figure 8, that first, second each gudgeon 30,31 swing displacements are supported on freely first, second each swing frame 21,22, be not as above-mentioned patent documentation 2 described structures, each gudgeon to be supported by dunnage.In addition, under the situation of the structure of above-mentioned Fig. 5～shown in Figure 8, the space that joint unit as described above is set is restricted etc., can not former state adopt above-mentioned patent documentation 2 described structures.
In addition, under the situation of the torque drastic change that passes through toroidal type stepless speed change device as described above, gear ratio also might take place along with overshoot do not converge to beating of set value.Beating except the reduction that causes transmission efficiency and make vibration increases so also makes cornering ability (riding stability) reduce etc., is not preferred.
Patent documentation 1: the spy opens the 2001-165262 communique
Patent documentation 2: open flat 6-43404 communique in fact
Summary of the invention
Toroidal type stepless speed change device of the present invention is In view of the foregoing, tilts exceedingly, realizes that in order to prevent live roll the structure with favorable durability invents.
Toroidal type stepless speed change device of the present invention possesses input side panel and output side panel, a plurality of gudgeon and a plurality of live roll.
Input side panel wherein and output side panel the concave surface that makes the cross section be respectively circular-arc be under the mutual inner side surface state opposite each other mutually with one heart and rotation independently of each other supported freely.
In addition, above-mentioned each gudgeon is the center swing with the locational pivot that reverses of central shaft that is in respect to above-mentioned input side panel and output side panel.
In addition, it is spherical convex surface that above-mentioned each live roll makes its side face, is clamped in above-mentioned input side panel under the state on above-mentioned each gudgeon and exports side panel each other to be supported on.
And, make will be separately by back shaft the intermediate portion axle be supported on be located at above-mentioned each gudgeon around support frame on, with the swing frame of above-mentioned each gudgeon equal number in the effect lower swing displacement of actuator freely.And, meanwhile, above-mentioned each pivot swinging on the two end part that are located at above-mentioned each gudgeon is supported on the two end part of above-mentioned each swing frame freely.
Particularly, in toroidal type stepless speed change device of the present invention, between above-mentioned each swing frame and above-mentioned each gudgeon, be provided with and be used for stoping the set above swing limting mechanism of these each gudgeon swings.
According to above-mentioned such toroidal type stepless speed change device of the present invention that constitutes,, can prevent that these each gudgeons and each live roll that is supported on these each gudgeons from exceedingly tilting by being located at the swing limting mechanism between each swing frame and each gudgeon.Promptly, even under the state (gear ratio of toroidal type stepless speed change device is from 1 state that departs from significantly) that these each live rolls tilt significantly, have and gear ratio takes place above the tendency that converges to the overshoot of set value after the set value, above-mentioned each gudgeon that supports above-mentioned each live roll also is subjected to the ground swing of above-mentioned swing limting mechanism limit excessive.Therefore, the contact ellipse that is formed on the rolling contact section (tractive unit) of inner side surface of the side face that is supported in above-mentioned each live roll on these each gudgeons and each dish can not ride up on ora terminalis of these each dishes, can guarantee the durability of these each live rolls and each dish.
Description of drawings
Fig. 1 be expression embodiments of the invention 1 want portion's sectional view.
Fig. 2 be a part is omitted and the A of expression to view.
Fig. 3 is upside, is upside, the stereogram of expression respectively with the face of the inner side surface that is opposite to end plate in Fig. 3 (B) stop component face with the end face that is opposite to gudgeon in Fig. 3 (A).
Fig. 4 be the expression embodiments of the invention 2, with the same figure of Fig. 2.
Fig. 5 is a sectional view of representing 1 example of in the past constructing.
Fig. 6 is the B-B sectional view of Fig. 5.
Fig. 7 is its C-C sectional view.
Fig. 8 is the sectional view with the state representation after cutting off with the plane at the central shaft that comprises first pivot on the two end part that are located at first gudgeon with the roughly the same part of Fig. 7.
Label declaration
1 toroidal type stepless speed change device
2 first input side panels
3 first output side panels
4 first live rolls
5 second input side panels
6 second output side panels
7 second live rolls
8 torque converters
9 input shafts
The 9a first half
9b is latter half of
Switching unit is advanced in 10 front and back
11 forward clutch
12 retreat and use clutch
13 front-wheel live axles
14 trailing wheel live axles
15 carriers
16 ball splines
17 deceleration loading devices
18 supporting drums
19 pillars
20 support rings
21 first swing frames
22 second swing frames
23 first support frames
24 second support frames
25 front-wheel output gears
26 front-wheel driven gears
27 front-wheel differential gears
28 trailing wheel output gears
29 trailing wheel driven gears
30 first gudgeons
31 second gudgeons
32,32a offset axis
33 first pivots
34 back shafts
35 pillar part
36a, 36b oil hydraulic cylinder
37a, 37b bar
38a, 38b piston
39 control valves
40 camming surfaces
41 plungers
42 spools
43 sleeves
44 control motors
45 first cavitys
46 second cavitys
47 main bodys
48 end plates
49 threaded pieces
50 supporting walls portions
51 circular holes
52 radial needle bearings
53 needle roller thrust bearings
54 outer rings
55 liners
56 circular holes
57 large-diameter portions
58 minor diameter parts
59 end differences
60 thrust ball bearings
61 outer rings
62 radial needle bearings
63 needle roller thrust bearings
64 radial needle bearings
65 swing limting mechanisms
66 protuberances
67 recesses
68 shrinkage pool portions
69 partition members
70 engaging recessed parts
71 first logical oil circuit footpaths
72 second logical oil circuit footpaths
73 stop components
74 plectane portions
75 cards end protuberance
76 inner rings
77 elastic members
Embodiment
Under enforcement situation of the present invention, be preferably, as described in technological scheme 2, the swing limting mechanism is made of protuberance and recess.These protuberances and recess be located at the pivot on the two end part of being located at each gudgeon end face and with the internal surface of opposed each swing frame of each end face on (be provided with in the internal surface of the end face of pivot and swing frame which protuberance or recess can).And, raised part is arrived in the above-mentioned recess with the combinations of states that can carry out inserting about the displacement of the swaying direction of above-mentioned each gudgeon (relative displacement).And, make the side of raised part and the internal surface butt of above-mentioned recess by swing according to these each gudgeons, stop these each gudgeons swing set more than.
If constitute like this, then can be simply and do not enlarge and the space is set and realizes preventing above-mentioned each gudgeon and be supported on the structure that each live roll on these each gudgeons exceedingly tilts.
In addition, state on the implementation under the situation of technological scheme 2 described inventions, be preferably, as described in technological scheme 3, between the internal surface of the side of protuberance and recess, be provided with the resistance mechanism that the swing of gudgeon is produced resistance, in other words, be provided with the resistance mechanism (damping mechanism) of above-mentioned gudgeon being given antivibration power (damping force).For example, as described in technological scheme 4, the structure that this resistance mechanism is had make the lubricant oil that imports in the space that the internal surface by the side of protuberance and recess constitutes to be come in and gone out from this space according to the displacement of this protuberance.Perhaps, as described in technological scheme 5, making above-mentioned resistance mechanism is by constituting with clamping elastic member between the internal surface of the side of mutual opposed protuberance and recess.
If be provided with such resistance mechanism (damping mechanism), then can prevent above-mentioned each gudgeon and be supported on each live roll on these each gudgeons exceedingly tilt (unnecessarily vibration).Promptly, even because of rapid cogging etc. has the tendency of beating that gear ratio does not converge to set value takes place, above-mentioned each gudgeon that supports above-mentioned each live roll also can be constituted above-mentioned resistance mechanism, be stoped swing exceedingly as the object (lubricant oil, elastic member) to the resistance of these each gudgeons swings.Therefore, be difficult for such beating takes place, can prevent the reduction of transmission efficiency, the increase of vibration and the reduction of riding stability.
Fig. 1～Fig. 3 represents the embodiments of the invention 1 corresponding to technological scheme 1～4.In addition, the invention is characterized in, exceedingly tilt by (first, second) live roll 4 (7) that prevents to be supported on (first, second) gudgeon 30 (31), and guarantee the durability that these (first, second) live rolls 4 (7) and (first, second) input side, outlet side respectively coil 2,5,3,6 (with reference to Fig. 5).The structure in the past of the structure of other parts and effect and above-mentioned Fig. 5～shown in Figure 8 is identical, so omit or simplify diagram and the explanation that repeats, below just the structure and the effect of the part of Fig. 1～shown in Figure 3 describe.In addition, the following description will be represented that " first ", " second " of first, second each parts that cavity is different omit and carry out.
Via back shaft 34 (with reference to Fig. 5～Fig. 8) be supported on each swing frame 21 (22) on the support frame 23 (24) be by threaded piece 49,49 with 1 pair of end plate 48,48 in conjunction with forming on the both ends of the surface that are fixed on the main body 47 of コ font roughly.The inboard of the circular hole 51,51 in the 1 pair of supporting walls portion 50,50 that mutually is formed on one heart on the two end part of being located at aforementioned body 47 is with the state that stops axial displacement, only swing is supported with the pivot 33,33 on the two end part that are located at above-mentioned each gudgeon 30 (31) mutually with one heart freely.For this reason, under the situation of present embodiment, between the outer circumferential face of the inner peripheral surface of above-mentioned each circular hole 51,51 and above-mentioned each pivot 33,33, be provided with radial needle bearing 52,52 and needle roller thrust bearing 53,53.
And,, make the outer circumferential face and the embedded inner peripheral surface sphere that is fixed on the liner 55,55 in above-mentioned each circular hole 51,51 of outer ring 54,54 of these two needle bearings 52,53 chimeric for these two needle bearings 52,53 are disposed with one heart.Above-mentioned two needle bearings the 52, the 53rd, by above-mentioned each outer ring 54,54 that has aligning like this and outside be embedded in and dispose respectively between the inner ring 76,76 on the outer circumferential face of above-mentioned each pivot 33,33 that a plurality of needle rollers constitute.
As described above, be supported on intermediate portion on above-mentioned each swing frame 21 (22), above-mentioned each gudgeon 30 (31) freely in the swing displacement that is the center with above-mentioned each pivot 33,33 only, base half one of offset axis 32a is being supported in the swing displacement freely.For this reason, at the intermediate portion of these each gudgeons 30 (31), the state that connects each other with inside and outside two side faces with these each gudgeons 30 (31) is formed with circular hole 56.These each circular holes 56 be by end difference 59 make the minor diameter part of large-diameter portion 57 and outer side surface side of inner side surface side of above-mentioned each gudgeon 30 (31) 58 continuous, the shape of band ladder.And, in such circular hole 56, supporting the above-mentioned offset axis 32a that forms with the outer ring 61 that constitutes angle contacting type thrust ball bearing 60 freely by radial needle bearing 62 rotations.In addition, between the inner side surface of the outer side surface of above-mentioned outer ring 61 and above-mentioned each gudgeon 30 (31), be provided with needle roller thrust bearing 63, can carry out the above displacement that offset axis 32a is outer ring 61 center, above-mentioned and live roll 4 (7) of stating smoothly.In addition, by above-mentioned thrust ball bearing 60 and other radial needle bearing 64 above-mentioned live roll 4 (7) rotations are supported on freely above-mentioned offset axis 32a first half around.
And then, under the situation of present embodiment, between above-mentioned each swing frame 21 (22) and above-mentioned each gudgeon 30 (31), be provided with and be used for stoping the set above swing limting mechanism 65,65 of these each gudgeon 30 (31) swings.Under the situation of present embodiment, these are respectively swung limting mechanism 65,65 constitute by 66,66 and 1 pairs of recesses 67,67 of 1 pair of protuberance respectively.Promptly, on inner side surface in conjunction with above-mentioned each end plate 48,48 on the two end part that are fixed on above-mentioned each swing frame 21 (22), with the two end part of being located at above-mentioned each gudgeon 30 (31) on the opposed part of end face of each pivot 33,33 on, to be provided with the shrinkage pool portion 68,68 of end shape from the recessed state of this inner side surface.And on the position, radially opposition side two place of these each shrinkage pool portions 68,68, being respectively equipped with opening portion is the above-mentioned recess 67,67 of fan-shaped.
For this reason, under the situation of present embodiment, partition member 69,69 is inlaid in above-mentioned each shrinkage pool portion 68,68 with the state that stops the rotation in these each shrinkage pool portions 68,68, part by the internal surface (inner peripheral surface and bottom surface) by the side of these partition members 69,69 and above-mentioned shrinkage pool portion 68,68 surrounds constitutes above-mentioned each recess 67,67.Under the state in the engaging recessed part 70,70 of above-mentioned each partition member 69,69 on being sticked in the bottom surface that is located at above-mentioned each shrinkage pool portion 68,68, stop displacement about the circumferencial direction of these each shrinkage pool portions 68,68.In addition, the outer circumferential face by these each partition members 69,69 is entrenched on the inner peripheral surface of above-mentioned shrinkage pool portion 68,68, the displacement that stops these each partition members 69,69 to make progress in the footpath of these shrinkage pool portions 68,68.In addition, center at these each partition members 68,68, be provided with the first logical oil circuit footpath 71 that is used for to part supplying lubricating oil above-mentioned thrust ball bearing 60 and radial needle bearing 62,64 etc., that need cool off and lubricate, and the radial outside in this first logical oil circuit footpath 71 is provided with the second logical oil circuit footpath 72,72 that is used for to the row's of giving lubricant oil in above-mentioned each recess 67,67.
On the other hand, on the end face of each pivot 33,33 on the two end part of being located at above-mentioned each gudgeon 30 (31), with the inner side surface of being located at above-mentioned each end plate 48,48 on above-mentioned each shrinkage pool portion 68,68 opposed position on, be fixed with circular stop component 73.This stop component 73 as shown in Figure 3, on the axial bi-side of plectane portion 74, to be respectively equipped with raised part 66,66 and card ends recess 75,75 from these each sides to axially outstanding state.Wherein each protuberance 66,66 is located at respectively on the position, radially opposition side two place by radial outside part, this plectane portion 74 of single side face (downside of Fig. 3 (A), same, the upper side of Fig. 3 (B), the outer side surface of Fig. 1) of above-mentioned plectane portion 74.In addition, above-mentioned each card end recess 75,75 be located at respectively above-mentioned plectane portion 74 another side (upper side of Fig. 3 (A), same, the downside of Fig. 3 (B), the inner side surface of Fig. 1) by the radially inner side part, stagger on 90 positions of spending about circumferencial direction and above-mentioned each protuberance 66,66 of this plectane portion 74.
And, end in the recess by above-mentioned each card being ended the not shown card that recess 75,75 cards end on the end face that is formed at above-mentioned each pivot 33,33, above-mentioned stop component 73 is fixed on the two end part of above-mentioned each gudgeon 30 (31) to stop the counterrotating state with respect to this gudgeon 30 (31).Under this state, above-mentioned each protuberance 66,66 can be carried out being inserted in displacement in above-mentioned each recess 67,67 about the swaying direction of above-mentioned each gudgeon 30 (31).In addition, meanwhile, by according to the swing of these each gudgeons 30 (31) and the side of above-mentioned each protuberance 66,66 is connected on the side of the internal surface of above-mentioned each recess 67,67, above-mentioned partition member 69,69, stop these each gudgeons 30 (31) swings set more than.In other words, under the state of above-mentioned each protuberance 66,66 in being inserted in above-mentioned recess 67,67, in the side of these each protuberances 66,66 is not connected to scope on the internal surface of above-mentioned recess 67,67, allow the displacement about swaying direction of above-mentioned gudgeon 30 (31).Thereby, by suitably limit above-mentioned each protuberance 66,66 from the side each other the interval and the internal surface of above-mentioned recess 67,67 in according to the swing of above-mentioned each gudgeon 30 (31) and with the part of the side butt of above-mentioned each protuberance 66,66, about the position relation of the swaying direction of these each gudgeons 30 (31), these each gudgeons 30 (31) and the tilt angle that is supported on the above-mentioned live roll 4 (7) on these each gudgeons 30 (31) can be limited in the scope of hope.
Under the situation of above-mentioned such present embodiment that constitutes, by being located at swing limting mechanism 65,65 between each swing frame 21 (22) and each gudgeon 30 (31), being above-mentioned each protuberance 66,66 and each recess 67,67, can prevent that these each gudgeons 30 (31) and each live roll 4 (7) that is supported on these each gudgeons 30 (31) from exceedingly tilting.Promptly, under the state (gear ratio of toroidal type stepless speed change device is from 1 state that departs from significantly) that these each live rolls 4 (7) tilt significantly, even have and gear ratio takes place surpass the tendency that converges to the overshoot of set value after the set value, the internal surface that also can be connected to above-mentioned recess 67,67 by the side of above-mentioned each protuberance 66,66 is to stop further swing on the side of partition member 69,69.Therefore, the contact ellipse that is formed on the rolling contact section (tractive unit) of the inner side surface that the side face that is supported on above-mentioned each live roll 4 (7) on these each gudgeons 30 (31) and input side, outlet side respectively coil 2,5 (3,6) can not ride up on these ora terminalis that respectively coil 2,5 (3,6), can guarantee these each live rolls 4 (7) and respectively coil the durability of 2,5 (3,6).
In addition, under the situation of present embodiment, lubricant oil is sent in the space that the internal surface by the side of above-mentioned each protuberance 66,66 and above-mentioned each recess 67,67 constitutes in (part of showing with slash sheet of Fig. 2) by the above-mentioned second logical oil circuit footpath 72,72.And, be full of in the above-mentioned space by making lubricant oil, constitute the resistance mechanism of conduct to the resistance of the swing of above-mentioned each gudgeon 30 (31).Promptly, by lubricant oil is filled in the space, when along with the swing of above-mentioned each gudgeon 30 (31) during above-mentioned each protuberance 66,66 displacement, these each protuberances 66,66 are applied power that above-mentioned lubricant oil is backed out (lubricant oil is sent back to power in the second logical oil circuit footpath 72,72, makes lubricant oil pass through the power in the gap between the internal surface of internal side diameter, each side face of outside diameter and each recess 67,67 of each protuberance 66,66).
The power (antivibration power, damping force) of such masterpiece for being used for stoping these each gudgeons 30 (31) unnecessarily to vibrate is applied on above-mentioned each gudgeon 30 (31) via the stop component 73,73 that is provided with above-mentioned each protuberance 66,66.Therefore, can prevent these each gudgeons 30 (31) and be supported on each live roll 4 (7) on these each gudgeons 30 (31) exceedingly tilt (unnecessarily vibration).That is,, supports above-mentioned each gudgeon 30 (31) of above-mentioned each live roll 4 (7) and also can only exceedingly swing by above-mentioned mechanical resistance even the tendency of beating that gear ratio does not converge on set value takes place because of rapid cogging etc. has.Therefore, be difficult for such beating takes place, can prevent that transmission efficiency from reducing, vibration increases and the reduction of riding stability.
In addition, be applied to the size in the gap between the internal surface of internal side diameter, each side face of outside diameter and each recess 67,67 of internal diameter that power (antivibration power, damping force) on each gudgeon 30 (31) can be by regulating the above-mentioned second logical oil circuit footpath 72,72, each protuberance 66,66 as described above via each protuberance 66,66, can be restricted to the value of hope.
Fig. 4 represents the embodiments of the invention 2 corresponding to technological scheme 1～3,5.Under the situation of present embodiment 2, by in the side of being located at each protuberance 66,66 on the stop component 73 and be located between the internal surface of each recess 67,67 on the end plate 48 that constitutes swing frame 21 (with reference to Fig. 1) elastic member 77,77 is set, constitute as resistance mechanism to the resistance of the swing of gudgeon 30 (with reference to Fig. 1).Promptly, by above-mentioned elastic member 77,77, the internal surface of the side of these each protuberances 66,66 and each recess 67,67 is given the power of the direction of leaving mutually by clamping compression helical spring between the internal surface of the side of mutual opposed above-mentioned each protuberance 66,66 and above-mentioned each recess 67,67 etc.Such masterpiece is applied on above-mentioned each gudgeon 30 via the above-mentioned stop component 73 that is provided with above-mentioned each protuberance 66,66 for the power (antivibration power, damping force) of the direction that stops these each gudgeons 30 and unnecessarily vibrate.Under the situation of present embodiment, owing to be provided with elastic member 77,77 as described above, so lubricant oil is filled in the space that the internal surface by above-mentioned each protuberance 66,66 and above-mentioned each recess 67,67 constitutes.Therefore, second logical oil circuit footpath 72,72 (with reference to Fig. 2) are not set on the partition member 69 that constitutes above-mentioned recess 67,67.Other structures and effect and the foregoing description 1 are same, so the repetitive description thereof will be omitted.
Understand the present invention in detail with reference to specific mode of execution, but can under the situation that does not break away from the spirit and scope of the invention, apply various changes and correction for a person skilled in the art.
The Japanese patent application that the application proposed based on July 6th, 2004 (special hope 2004-198755) is here with reference to also quoting its content.
Claims (5)
1, a kind of toroidal type stepless speed change device comprises: the concave surface that makes the cross section be respectively circular-arc be under the mutual inner side surface state opposite each other mutually with one heart and supported freely input side panel and the output side panel of rotation independently of each other;
To be in the locational pivot that reverses with respect to this two central shaft that coils is a plurality of gudgeons of center swing;
With be supported on be clamped under the state on these each gudgeons above-mentioned two the dish each other and its side face be a plurality of live rolls of spherical convex surface;
Make will be separately by back shaft the intermediate portion axle be supported on be located at above-mentioned each gudgeon around support frame on, with the swing frame of above-mentioned each gudgeon equal number in the effect lower swing displacement of actuator freely, and above-mentioned each pivot swinging on the two end part that are located at above-mentioned each gudgeon is supported on the two end part of above-mentioned each swing frame freely, it is characterized in that
Between above-mentioned each swing frame and above-mentioned each gudgeon, be provided with and be used for stoping the set above swing limting mechanism of these each gudgeon swings.
2, toroidal type stepless speed change device as claimed in claim 1, it is characterized in that, the swing limting mechanism be included in the pivot on the two end part of being located at each gudgeon end face and with the internal surface of opposed each swing frame of these each end faces on the protuberance and the recess that are provided with respectively, raised part is arrived in the above-mentioned recess with the combinations of states of inserting with displacement on the swaying direction that can carry out above-mentioned each gudgeon, make the side of raised part and the internal surface butt of above-mentioned recess by swing according to these each gudgeons, stop these each gudgeons swing set more than.
3, toroidal type stepless speed change device as claimed in claim 2 is characterized in that, between the internal surface of the side of protuberance and recess, is provided with the resistance mechanism that the swing of gudgeon is produced resistance.
4, toroidal type stepless speed change device as claimed in claim 3 is characterized in that, resistance mechanism has the structure that the lubricant oil that imports in the space that the internal surface by the side of protuberance and recess constitutes is come in and gone out from this space according to the displacement of this protuberance.
5, toroidal type stepless speed change device as claimed in claim 3 is characterized in that, resistance mechanism is to constitute by clamping elastic member between the internal surface of the side of mutual opposed protuberance and recess.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004198755A JP4774694B2 (en) | 2004-07-06 | 2004-07-06 | Toroidal continuously variable transmission |
| JP198755/2004 | 2004-07-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1997841A true CN1997841A (en) | 2007-07-11 |
| CN100460715C CN100460715C (en) | 2009-02-11 |
Family
ID=35782693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800230036A Expired - Fee Related CN100460715C (en) | 2004-07-06 | 2005-06-28 | Toroidal type stepless speed change device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4774694B2 (en) |
| CN (1) | CN100460715C (en) |
| DE (1) | DE112005001589B4 (en) |
| WO (1) | WO2006003886A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762894A (en) * | 2011-02-03 | 2012-10-31 | 日本精工株式会社 | Toroidal continuously variable transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013044412A (en) * | 2011-08-25 | 2013-03-04 | Nsk Ltd | Toroidal continuously variable transmission |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768881U (en) * | 1980-10-14 | 1982-04-24 | ||
| JP2591441Y2 (en) * | 1992-11-12 | 1999-03-03 | 日本精工株式会社 | Toroidal type continuously variable transmission |
| JP3355941B2 (en) * | 1996-07-16 | 2002-12-09 | 日産自動車株式会社 | Toroidal type continuously variable transmission |
| JP3711688B2 (en) * | 1997-03-22 | 2005-11-02 | マツダ株式会社 | Toroidal continuously variable transmission |
| JP3417288B2 (en) * | 1998-03-12 | 2003-06-16 | 日産自動車株式会社 | Toroidal type continuously variable transmission |
| JP4190117B2 (en) * | 1999-12-06 | 2008-12-03 | 日本精工株式会社 | Toroidal continuously variable transmission |
| JP3624367B2 (en) * | 1999-12-09 | 2005-03-02 | 日産自動車株式会社 | Toroidal continuously variable transmission |
| JP2002295618A (en) * | 2001-04-03 | 2002-10-09 | Koyo Seiko Co Ltd | Toroidal continuously variable speed transmission |
| JP3729135B2 (en) * | 2001-07-05 | 2005-12-21 | 日産自動車株式会社 | Toroidal continuously variable transmission |
| JP2003021210A (en) * | 2001-07-10 | 2003-01-24 | Nsk Ltd | Toroidal type continuously variable transmission and continuously variable transmission device |
| JP2004003594A (en) * | 2002-01-25 | 2004-01-08 | Makoto Kida | Turning mechanism for turning member and turned base member |
| JP2003336708A (en) * | 2002-05-20 | 2003-11-28 | Nsk Ltd | Trunnion of toroidal continuously variable transmission and toroidal continuously variable transmission |
| JP3912178B2 (en) * | 2002-05-20 | 2007-05-09 | 日産自動車株式会社 | Assembly method of link connection structure for trunnion in toroidal type continuously variable transmission |
| KR100867108B1 (en) * | 2002-09-19 | 2008-11-06 | 삼성전자주식회사 | Installation Equipment for Display and Jig for Installation Equipment |
| DE102004006445B4 (en) * | 2004-02-03 | 2006-02-02 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Variator for a toroidal transmission |
-
2004
- 2004-07-06 JP JP2004198755A patent/JP4774694B2/en not_active Expired - Fee Related
-
2005
- 2005-06-28 CN CNB2005800230036A patent/CN100460715C/en not_active Expired - Fee Related
- 2005-06-28 DE DE112005001589T patent/DE112005001589B4/en not_active Expired - Fee Related
- 2005-06-28 WO PCT/JP2005/011831 patent/WO2006003886A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762894A (en) * | 2011-02-03 | 2012-10-31 | 日本精工株式会社 | Toroidal continuously variable transmission |
| CN102762894B (en) * | 2011-02-03 | 2016-05-04 | 日本精工株式会社 | Toroidal type stepless speed change device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100460715C (en) | 2009-02-11 |
| JP2006022828A (en) | 2006-01-26 |
| DE112005001589T5 (en) | 2007-06-28 |
| WO2006003886A1 (en) | 2006-01-12 |
| DE112005001589B4 (en) | 2010-08-26 |
| JP4774694B2 (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4254051B2 (en) | Toroidal continuously variable transmission | |
| JP2000120822A (en) | Continuously variable transmission device | |
| JP3726662B2 (en) | Toroidal continuously variable transmission | |
| JP3666879B2 (en) | Toroidal continuously variable transmission for four-wheel drive vehicles | |
| US7195576B2 (en) | Continuously variable transmission apparatus | |
| CN100460715C (en) | Toroidal type stepless speed change device | |
| JP4116146B2 (en) | Differential device | |
| JP4190117B2 (en) | Toroidal continuously variable transmission | |
| JPH11280867A (en) | Continously variable transmission | |
| US6203466B1 (en) | Continuously variable transmission apparatus | |
| JP4085457B2 (en) | Continuously variable transmission | |
| JP4172890B2 (en) | Half toroidal continuously variable transmission | |
| JP4204157B2 (en) | Toroidal continuously variable transmission for four-wheel drive vehicles | |
| JP4213240B2 (en) | Differential equipment | |
| JP4492007B2 (en) | Toroidal continuously variable transmission and continuously variable transmission | |
| JP4622342B2 (en) | Toroidal continuously variable transmission for four-wheel drive vehicles | |
| CN113586696B (en) | Actuator of transfer case | |
| JP4513391B2 (en) | Toroidal continuously variable transmission | |
| JP4055593B2 (en) | Continuously variable transmission | |
| JP2004239301A (en) | Continuously variable transmission | |
| JPH08135746A (en) | Toroidal type continuously variable transmission | |
| JP2001289303A (en) | Continuously variable transmission | |
| JP4158320B2 (en) | Continuously variable transmission | |
| JP3892510B2 (en) | Vehicle left / right driving force distribution device | |
| JP2576534Y2 (en) | Toroidal type continuously variable transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20130628 |