CN1164623A - Stepless change gear device - Google Patents
Stepless change gear device Download PDFInfo
- Publication number
- CN1164623A CN1164623A CN 97103384 CN97103384A CN1164623A CN 1164623 A CN1164623 A CN 1164623A CN 97103384 CN97103384 CN 97103384 CN 97103384 A CN97103384 A CN 97103384A CN 1164623 A CN1164623 A CN 1164623A
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- CN
- China
- Prior art keywords
- pulley
- spring
- central part
- belt
- clutch
- 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
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- Transmissions By Endless Flexible Members (AREA)
- Pulleys (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Threshing Machine Elements (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
A stepless gear change mechanism is provided to prevent the occurrence of waviness phenomenon of a spring without a spring guide, to reduce the number of parts, and to facilitate an assembly work. A fixed pulley half body and a moving pulley half body 62 are fitted in inner and outer cylinders 55 and 58, respectively, slidably fitted in each other and pivotally supported to each other and a V-belt 52 is nipped between the conical surfaces, positioned facing each other, of the fixed and moving pulley half-bodies 61 and 62. It is characterized in that a spring 80 to press the moving pulley half body 62 peripherally arranged around the outer cylinder 58 in the direction of the fixed half-body pulley 61 has two end parts diameters of which are smaller than that of a central part.
Description
The present invention relates to the middle belt-drive variable-speed transmissions that adopt such as motor bike.
Belt-drive variable-speed transmission is to set up the ring-type vee-belt between drive pulley and driven pulley, automatically adds and subtracts the effective radius of two belt pulleys and transferring power according to the machine revolution.Each belt pulley is at the fast pulley halfbody and can seizing vee-belt on both sides by the arms between the movable half-pulley in axial sliding, changes effective radius by movable half-pulley with respect to the relative axial position of fast pulley halfbody.
Fig. 4 is the sectional view of driven pulley one side of the existing stepless speed changes devices of expression.The inner sleeve 02 rotatable earth's axis is propped up on the reducer input shaft 01 of retarder, and as output shaft, propping up in the peripheral shaft of inner sleeve 02 can be with respect to the outer sleeve 03 of inner sleeve 02 slip with rear axle shaft for this retarder.
Right-hand member at inner sleeve 02 and outer sleeve 03 is being provided with driven pulley 04, and this driven pulley 04 is made of fast pulley halfbody 05 that is inlaid in inner sleeve 02 right part and the movable half-pulley 06 that is inlaid in outer sleeve 03 right part.The fast pulley halfbody 05 on right side and the movable half-pulley 06 in left side, its conical surface is being seized vee-belt 07 on both sides by the arms vis-a-vis between them.
Left part at reducer input shaft 01 and inner sleeve 02 is provided with clutch 08, and clutch outside plate 010 is inlaid in the left part of reducer input shaft 01, this clutch outside plate 010 topped be inlaid in the periphery of the driving plate 09 of inner sleeve 02 left part.
Be located at outer sleeve 03 spring 015 on every side and be contained between driving plate 09 and the movable half-pulley 06, movable half-pulley 06 is seized on both sides by the arms vee-belt 07 by this spring 015 toward fast pulley halfbody 05 1 thrusters pressure.
On outer sleeve 03, along axially and at circumferencial direction wearing the slotted hole 03a of inclination slightly, in this slotted hole 03a, engaging the torque pin 02a that is darted on the inner sleeve 02, be used to guide the slip of outer sleeve 03 with respect to inner sleeve 02.
In the periphery of outer sleeve 03, across O shape ring chimeric columnar seal closure 016, by the opening surface of the thickly topped slotted hole 03a of sealing cover 016 oil, grease in filling in slotted hole 03a.
Between week, be provided with columnar spring guide member 017 in the sealing cover 016 of outer sleeve 03 periphery and spring 015, an end and the driving plate 09 of this cylindrical springs guide member 017 join, and overlap with seal closure 016 partly.
Each lip part of the two ends of spring 015 and spring guide member 017 and seal closure 016 joins.
In addition, in real public clear 63-4842 number of Japanese patent gazette, disclosed the stepless speed changes devices that the spring guide member is not set.
This wave phenomenon makes spring 015 run into the clutch brake shoe of central part periphery or the seal closure in interior week 016 etc., sends different sound.
As illustrated in fig. 4, with the interior week of spring guide member 017 support spring 015, take place though can prevent the wave phenomenon, amount of parts increases, the assembling operation trouble.
The present invention makes in view of the above problems, its purpose be to provide a kind of the spring guide member is not set and can prevent spring wave phenomenon, few, the assembling operation of amount of parts is easy to stepless speed changes devices.
To achieve these goals, stepless speed changes devices of the present invention, on chimeric slidably, axle is propping up mutually inner core and urceolus, setting-in fast pulley halfbody and movable half-pulley respectively, at in opposite directions between the conical surface of this fast pulley halfbody and movable half-pulley, seizing vee-belt on both sides by the arms, it is characterized in that, be located in week around the urceolus, the spring of movable half-pulley toward fast pulley halfbody one thruster pressure, the diameter of its central part is littler than two end part.
Because the diameter of spring central part is littler than two end part, so, the central part that diameter is little is subjected to the pushing at major diameter two end part, spring itself has the guidance function of restriction central part off-centre, can prevent the wave phenomenon of spring drum face, under the state that the spring guide member is not set, can prevent the different sound that the collision because of spring produces, can also stop the durability that causes because of abrasion to reduce.
Owing to do not need the spring guide member, so amount of parts is few, assembling operation is easy, can reduce cost.
In the present invention program's 1 described stepless speed changes devices, because the diameter of above-mentioned spring dwindles to central part gradually from two end part, so except can fully keeping the original function of spring, also obtain spin balancing easily.
In the present invention program 1 or the 2 described stepless speed changes devicess, because the minor diameter central part of above-mentioned spring pushes the seal closure of topped urceolus outer circumferential face from the outside, so, need not to adopt special special-purpose member, can improve the oil-tightness of seal closure.
Fig. 1 is motor-scooter type moped 1 the whole profile that be fit to adopt the stepless speed changes devices of one embodiment of the invention.
Fig. 2 is the sectional view of the power unit that dissects along II-II line among Fig. 1.
Fig. 3 is driven pulley and near sectional view thereof.
Fig. 4 is the driven pulley of existing stepless speed changes devices and near sectional view thereof.
Below, referring to figs. 1 through Fig. 3 one embodiment of the present of invention are described.
Fig. 1 is the motor-scooter type moped whole profile that is fit to adopt stepless speed changes devices of the present invention.
Body forward structure 2 is connected by low base plate 4 with body tail 3, after vehicle frame 5 stretches out downwards from body forward structure 2, rearward flatly extends from base plate 4, erects from the base plate rear end, and rearward past again oblique upper tilts and extends to the rear end.
In the front portion of this vehicle frame 5, the upper end has and turns to handgrip 6, and lower ending pivot is propping up front fork 8, and 8 of this front forks are propping up front-wheel 7.
On the rising portions of vehicle frame 5, the axle propping up trailing wheel 9 swing type power unit 20 the front end bottom by connecting rod 10 swingably pivot prop up in the rear end, between the vehicle body frame 5 on the rear portion of this power unit 20 and above it, adorning posterior bumper 11.
Body forward structure 2 is topped by legging cover 15, and 4 of base plate are being established foot treadle 16, and body tail is topped by vehicle body cover 17, is provided with vehicle seat 18 on the top of vehicle body cover 17.
Power unit 20 is made of fore single cylinder 2 stroke IC engines 21 of configuration, the gear reducer 22 that is located at the rear portion, the vee-belt formula automatic transmission 23 that is provided between internal-combustion engine 21 and the gear reducer 22, is housed in the power unit case 25 with forming a unit.
Fig. 2 represents the structure of power unit 20.
The gear-box 29 of topped gear reducer 22 constitutes power unit case 25 by the transmission-case cover 28 of the long left side case 26 of fore-and-aft direction, right side case 27, topped left side case 26 left side sides with from the left side.Above-mentioned left side case 26 is being accommodated vee-belt automatic transmission 23 and gear reducer 22, and double as is the clutch box left side of internal-combustion engine 21, and above-mentioned right side case 27 engages with the front portion of left side case 26, and constitutes the right-hand part of clutch box.
On the clutch box that forms by left side case 26 and right side case 27, supporting rotatable clutch shaft 31 by pairing left and right main bearing 30,30, cylinder block 21a and cylinder head 21b stand from this clutch box of internal-combustion engine 21 with inclining after a while upward and establish and engaging.
The piston 32 that slides in cylinder block 21a is connected with clutch shaft 31 by connecting rod 33.
At the right-hand member of clutch shaft 31, be provided with AC motor 34 and cooling fan 35, engine hood 36 topped peripheries at internal-combustion engine 21, AC motor 34, cooling fan 35.
Left end at clutch shaft 31, be provided with the drive pulley 40 of stepless speed changes devices 23, the fast pulley halfbody 41 of drive pulley 40 and movable half-pulley 42 are oppositely arranged, fast pulley halfbody 41 is fixed on the left end of clutch shaft 31, and movable half-pulley 42 is bearing on the clutch shaft 31 vertically slidably.At movable belt pulley 42 and be fixed between the swash plate 43 on the clutch shaft 31, accommodating the governor weight 44 that can move at radial direction.
The mobile of the centrifugal direction of governor weight 44 makes movable half-pulley 42 near fast pulley halfbody 41, can increase the effective radius of the vee-belt 52 of seizing on both sides by the arms between two half- pulley 41,42.
Be provided in the gear reducer 22 in side case 26 rear portions, left side and the gear-box 29, at reducer input shaft 45 and reducer output shaft is between the rear axle shaft 47, be provided with jack shaft 46, input gear 48 is inlaid on the reducer input shaft 45, be inlaid in major diameter intermediate gear 49 and 48 engagements of input gear on the jack shaft 46, the intermediate gear 50 of minor diameter is inlaid on the jack shaft 46, output gear 51 is inlaid on the rear axle shaft 47, this minor diameter intermediate gear 50 and output gear 51 engagements constitute reducing gear like this.
As shown in Figure 3, on reducer input shaft 45, inner core 55 is propping up by the needle bearing 56 and the ball bearing 57 rotatable earth's axis, and at the right-hand member of this inner core 55, setting-in the fast pulley halfbody 61 of driven pulley 60.
Urceolus 58 is entrenched in the periphery of inner core 55 slidably, at the right-hand member of this urceolus 58, setting-in the movable half-pulley 62 of driven pulley 60, this movable half-pulley 62 and said fixing half-pulley 61, its conical surface is being seized vee-belt 52 on both sides by the arms in opposite directions between them.
Be entrenched in slidably on the cylindrical shape urceolus 58 of inner core 55 peripheries, wearing the slotted hole 58a of inclination slightly vertically and at circumferencial direction, the torque pin 55a that is darted on the inner core 55 is bonded in this slotted hole 58a, plays the effect of guiding urceolus 58 with respect to the slip of inner core 55.
Grease in filling in above-mentioned slotted hole 58a, on the inner peripheral surface two end part of slipping with inner core 55 peripheries of urceolus 58, embedding oil sealing 63,63, in the periphery of urceolus 58, O shape ring by two ends chimeric columnar seal closure 65, by the opening surface of the thickly topped slotted hole 58a of sealing cover 65 oil.
At the right-hand member of seal closure 65, form to the curved part 65a of periphery directional ring around expansion, this curved part 65a joins with movable half-pulley 62.
Left part at reducer input shaft 45 and inner core 55, be provided with clutch 70, the clutch outside plate 71 that round-ended cylinder shape is arranged of the flat of clutch 70, the center hole of its diapire 71a is entrenched in the left end screw section of reducer input shaft 45 by the axle collar 73, tighten with nut 74, its all sidewall 71b is to right-hand opening.
In the inside of this clutch outside plate 71, with the left part reduced of fast pulley halfbody 61 all-in-one-piece inner cores 55, form periphery and carve the assembly department 61b that is provided with screw thread, the clutch inner panel is that driving plate 72 is thereon chimeric, tightens with nut 75.
Driving plate 72 makes the hollow circular plate type, connects cylindrical board 72c by the interior plectane 72a of portion through stepped part 72b and constitutes.
On the 72c of plectane portion, be provided with equally spaced 3 pins 76 outside, clutch brake shoe 77 can shake the earth's axis and prop up on this pin 76, is pushed toward central direction by clutch spring 78.
Be located at the inner peripheral surface setting of the friction means 77a of clutch brake shoe 77 peripheries along all sidewall 71b of clutch outside plate 71, axle at the clutch brake shoe 77 on the pin 76 when opposing clutch spring 78 direction to radius outside is swung under the centrifugal masterpiece, the inner peripheral surface of all sidewall 71b of friction means 77a and clutch outside plate 71 joins, and clutch is engaged.
Between the driving plate 72 and movable half-pulley 62 of clutch 70, the spring 80 seal closure 65 peripheries, the spring steel that is located at urceolus 58 is housed.
In the curved recessed portion of the curved part 65a of right part 80a embedding seal closure 65 right-hand members of spring 80, the left part 80b of spring 80 and the stepped part 72b of driving plate 72 join, spring 80 is held under the arm between movable half-pulley 62 and driving plate 72 and is compressed, push movable half-pulley 62 to fast pulley halfbody 61 by its elastic force, the central part 80c of spring 80 and the outer circumferential face of seal closure 65 join.
Like this, between the movable half-pulley 62 and fast pulley halfbody 61 that are pushed by spring 80, seizing the rear portion of anterior vee-belt 52 on drive pulley 40 on both sides by the arms, movable half-pulley 62 is pressed toward 61 1 thrusters of fast pulley halfbody by spring 80, the effective radius of feasible vee-belt 52 of reeling increases, and therefore can make vee-belt 52 tensionings.
Below, the action of the stepless speed changes devices of the present invention 23 with above-mentioned structure is described.
When the rotational speed of internal-combustion engine 21 hour, shown in solid line among Fig. 2, the governor weight 44 that moves along the swash plate 43 of drive pulley 40 1 sides is at central side, movable half-pulley 42 is left the fast pulley halfbody, and the coiling effective radius of vee-belt 52 is little, therefore, in driven pulley 60 1 sides, movable half-pulley 62 is pushed by spring 80 and near fast pulley halfbody 61, the coiling effective radius of vee-belt 55 increases, and power is transmitted with big reduction speed ratio.
When the internal-combustion engine rotational speed increases, shown in double dot dash line among Fig. 2, governor weight 44 moves to centrifugal direction, the movable half-pulley 42 of drive pulley 40 1 sides is near fast pulley halfbody 41, the coiling effective radius of vee-belt 55 increases, therefore, in driven pulley 60 1 sides, movable half-pulley 62 antagonistic springs 80 and leave fast pulley halfbody 61, the coiling effective radius of vee-belt 55 reduces, and reduction speed ratio reduces gradually, at this moment, clutch 70 also is in jointing state, and the rotational speed of trailing wheel 9 increases.
Push the spring 80 of movable half-pulley 62, the central part 80c that its diameter is little is subjected to the big two end part 80a of diameter, the pushing of 80b, therefore, spring 80 itself has the guidance function of restriction central part 80c off-centre, and, because central part 80c is in the state that is bearing in seal closure 65 peripheries, so, central part 80c is also stable during rotation is being supported, and can prevent the wave phenomenon fully, keeps good spin balancing.
Therefore, can avoid fully preventing different sound and abrasion, can improve durability because of spin balancing destroys the collision that causes spring 80 and clutch brake shoe 77 grades.
Because do not need the spring guide member in the existing apparatus, so, having reduced amount of parts, assembling operation is easy, and producibility is good, can reduce cost.
In addition,, form cydariform because the diameter of spring 80 dwindles to central part 80c gradually from two end part 80a, 80b, so, not only fully keep the elasticity that spring possessed originally but also can obtain spin balancing.
Because the minor diameter central part 80c of spring 80 and seal closure 65 peripheries are joined and crimping sealing cover 65, from outside fit sealing cover 65, so, do not need special special-purpose member, only, the grease that is filled in seal closure 65 inside is not leaked outside, realize oil-tightness with the O shape ring 64,64 at two ends.
Claims (3)
1. stepless speed changes devices, on chimeric slidably, axle is propping up mutually inner core and urceolus, setting-in fast pulley halfbody and movable half-pulley respectively, at this fast pulley halfbody and movable in opposite directions between the conical surface of half-pulley, seizing vee-belt on both sides by the arms, it is characterized in that, be located in week around the urceolus, littler toward the diameter of the central part of the spring of aforementioned fast pulley halfbody one thruster pressure than two end part aforementioned movable half-pulley.
2. stepless speed changes devices as claimed in claim 1 is characterized in that, above-mentioned spring is from two end part to the central part shape of diameter reduction gradually.
3. stepless speed changes devices as claimed in claim 1 or 2 is characterized in that, the minor diameter central part of above-mentioned spring pushes the seal closure of topped urceolus outer circumferential face from the outside.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP099768/1996 | 1996-04-22 | ||
| JP099768/96 | 1996-04-22 | ||
| JP09976896A JP3573236B2 (en) | 1996-04-22 | 1996-04-22 | Continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1164623A true CN1164623A (en) | 1997-11-12 |
| CN1066525C CN1066525C (en) | 2001-05-30 |
Family
ID=14256157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97103384A Expired - Fee Related CN1066525C (en) | 1996-04-22 | 1997-03-27 | Stepless change gear device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3573236B2 (en) |
| CN (1) | CN1066525C (en) |
| IT (1) | IT1292244B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19857710B4 (en) * | 1997-12-22 | 2013-02-21 | Schaeffler Technologies AG & Co. KG | transmission |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521048B2 (en) * | 1973-09-01 | 1977-01-12 | ||
| JPS6030508Y2 (en) * | 1980-04-22 | 1985-09-12 | 東京自動機工株式会社 | Pulley transmission for pump or blower |
| JPS5870547U (en) * | 1982-09-14 | 1983-05-13 | 本田技研工業株式会社 | Variable diameter type V pulley |
| JPS59127955U (en) * | 1983-02-15 | 1984-08-28 | 三ツ星ベルト株式会社 | speed change pulley |
| US4585429A (en) * | 1984-09-19 | 1986-04-29 | Yamaha Hatsudoki Kabushiki Kaisha | V-belt type continuously variable transmission |
| US4605386A (en) * | 1985-08-19 | 1986-08-12 | Harris Gerald R | Compact variable speed pulley assembly |
| JPH0214682Y2 (en) * | 1985-11-07 | 1990-04-20 | ||
| JPH027166U (en) * | 1988-06-29 | 1990-01-17 | ||
| FR2671596B1 (en) * | 1991-01-16 | 1995-09-15 | Ibc Europ Eurl | AUTOMATIC SPEED DRIVE PULLEY. |
| CA2052356C (en) * | 1991-09-27 | 1998-06-02 | Jean Robert | Driving pulley for a variable speed belt gear with tooth counter-weights |
| US5254041A (en) * | 1992-10-26 | 1993-10-19 | Duclo Marley J | V-drive clutch assembly |
| JP3045889B2 (en) * | 1993-03-15 | 2000-05-29 | 株式会社アクロス | Method of manufacturing coil spring made of carbon fiber carbon composite material |
| JP2879646B2 (en) * | 1994-08-14 | 1999-04-05 | ヤマハ発動機株式会社 | Transmission for V-belt driven vehicle |
-
1996
- 1996-04-22 JP JP09976896A patent/JP3573236B2/en not_active Expired - Fee Related
-
1997
- 1997-03-27 CN CN97103384A patent/CN1066525C/en not_active Expired - Fee Related
- 1997-04-04 IT IT97TO000284A patent/IT1292244B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| IT1292244B1 (en) | 1999-01-29 |
| JP3573236B2 (en) | 2004-10-06 |
| ITTO970284A1 (en) | 1998-10-04 |
| CN1066525C (en) | 2001-05-30 |
| JPH09287638A (en) | 1997-11-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |