CN101122322A - Stepless gear change with centrifugal clutch and its manufacture method - Google Patents
Stepless gear change with centrifugal clutch and its manufacture method Download PDFInfo
- Publication number
- CN101122322A CN101122322A CNA2006101154144A CN200610115414A CN101122322A CN 101122322 A CN101122322 A CN 101122322A CN A2006101154144 A CNA2006101154144 A CN A2006101154144A CN 200610115414 A CN200610115414 A CN 200610115414A CN 101122322 A CN101122322 A CN 101122322A
- Authority
- CN
- China
- Prior art keywords
- driven pulley
- drive plate
- iron parts
- pulley
- stepless speed
- 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.)
- Pending
Links
Images
Landscapes
- Pulleys (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The invention provides a centrifugal clutch, which can increase the intensity of a connecting section between a driven pulley and a drive plate to promote the durability of the connecting section, and reduce the number and weight of parts as well, and a manufacture method of the clutch. A continuously variable transmission with the centrifugal clutch is provided with the driven pulley, the drive plate of the centrifugal clutch, an external shell for output, and a clutch counterweight. The driven pulley consists of aluminum-molded products. An annular belt can be wound between the driven pulley and a drive pulley, which is driven to rotate by an engine. The drive plate of the centrifugal clutch is connected with an external thread section formed at the driven pulley by fastening a nut and can rotate with the driven pulley. The external shell for output at least covers the external perimeter of the drive plate and is connected with a driven shaft. The clutch counterweight, supported by a rotating shaft is arranged on the drive plate, and is connected with the internal perimetric surface of the external shell for output in a butting way to transmit power. The external thread section of the driven pulley consists of iron parts, and the driven pulley is formed with embedded molded iron parts.
Description
Technical field
The present invention relates to a kind of V-type Belt-type Adjustable-speed device and manufacture method thereof with centrifugal clutch, in more detail, the structure and the manufacture method thereof that relate to a kind of fixed pulley, the structure of this fixed pulley are suitable for fixed pulley that is made of aluminium moulding product in the fixing driven pulley that constitutes this stepless speed changes devices and the drive plate that fixedly constitutes centrifugal clutch.
Background technique
In the two-wheeled motor vehicle of scooter etc., adopt the V-type Belt-type Adjustable-speed device of band centrifugal clutch mostly.This stepless speed changes devices has: drive pulley, and it accepts the driving force of motor, rotates while change roll diameter; And driven pulley, its in the driving force of accepting by the V-type band from drive pulley, by centrifugal clutch to the driven shaft transferring power.In addition, the driving force that is delivered to driven shaft passes to driving wheel by retarder.And then, in this stepless speed changes devices, when driven pulley is that predetermined number of revolutions is when above, above-mentioned centrifugal clutch engages, thereby give driven shaft with transmission of power, simultaneously, the roll diameter of driven pulley changes according to the variation of the roll diameter of drive pulley, thereby gear ratio is changed, to carry out transmission of power.
And then above-mentioned driven pulley has: fixed pulley, and it is supported for respect to driven shaft and can not moves axially relatively, but can rotate relatively; And movable sheave, its can near or away from this fixed pulley.This movable sheave by the periphery of the upwardly extending outstanding axial region of axle of fixed pulley sliding freely axle support, and can move axially relatively and can rotate relatively with respect to fixed pulley, simultaneously, this movable sheave is connected with centrifugal clutch with the state of allowing a little phase difference by twisting force cam.In addition, movable sheave is subjected to the application of force to the fixed pulley direction by spring.
And then fixed pulley has following structure.That is, form external thread part in the periphery of the axle head of above-mentioned outstanding axial region, fastening by nut being screwed on this external thread part, carry out, just the drive plate of centrifugal clutch can be fixed on the fixed pulley.
On the other hand, at the outside of this drive plate configuration shell, make it surround this drive plate, the tightening nut that the external thread part that this shell forms by axle head fastening and at driven shaft screws is fixed on the driven shaft and can not rotates.
Drive pulley increases the roll diameter of V-type band according to the increase of engine revolution, meanwhile, and the action that driven pulley reduces the roll diameter of V-type band.When the revolution of driven pulley reaches predetermined value when above, centrifugal clutch engages, thereby driven pulley and driven shaft are connected.
In addition, in above-mentioned existing driven pulley, split is provided with belt pulley portion of hanging the V-type band and the outstanding axial region that extends and be formed with external thread part vertically, and with fastening their formation one such as rivets.That is, the belt pulley portion that should be shaped to intended shape well is made of the moulding product of aluminium etc.; Be used to guarantee that the outstanding axial region that nut is carried out fastening intensity then is made of iron parts such as cast irons.In addition, because described prior art does not relate to the document invention disclosed, therefore, there are not the prior art documents and materials that to put down in writing.
But, in above-mentioned existing stepless speed changes devices, because hanging the belt pulley portion of belt is provided with by split with the outstanding axial region that is formed with external thread part, their fastening backs are constituted driven pulley, therefore, the component number that exists in the manufacturing process increases, simultaneously, because the problem that the weight increase of outstanding axial region causes the weight of stepless speed changes devices integral body to increase.; though think that then the problems referred to above just can not take place, in the case if being connected between driven pulley and the drive plate replaced to by snap ring etc. by the nut ways of connecting carry out ways of connecting; exist the strength deficiency of attachment portion again, durability worsens this problem.
Summary of the invention
The present invention In view of the foregoing makes just, purpose is to provide a kind of stepless speed changes devices and manufacture method thereof, it can improve the intensity of the joint between driven pulley and the drive plate, thereby durability is improved, simultaneously, can also seek the reduction of component number and alleviating of weight.
Have in the stepless speed changes devices of band centrifugal clutch of the present invention: driven pulley, it is made of aluminium moulding product, the endless belt of can reeling between itself and the drive pulley by engine-driving rotation; The drive plate of centrifugal clutch, its by fastening nut be formed on this driven pulley on external thread part be connected, thereby can rotate with this driven pulley; Shell is used in output, and it covers the periphery of this drive plate at least, and is connected on the driven shaft; And clutch weight, it is supported on the above-mentioned drive plate by the rotatable earth's axis, and under the action of centrifugal force that produces in the rotation of following this drive plate, use the interior perimeter surface butt of shell with transferring power by friction material and above-mentioned output, the stepless speed changes devices of this band centrifugal clutch is characterised in that, the external thread part of above-mentioned driven pulley is made of iron parts, and forms this driven pulley by these iron parts of pre-buried moulding.
In addition, preferred the present invention makes above-mentioned iron parts at one end form above-mentioned external thread part on the outer surface, simultaneously, the circle shape part of through hole is set on side face.
In addition, the present invention can be provided with a plurality of described through holes along the axially-spaced distance of above-mentioned circle shape part.And then preferred the present invention makes above-mentioned iron parts form end difference by circle shape part is carried out pressure processing, and carries out the axle support by outer ring and this end difference butt that makes bearing.
Another aspect of the present invention is a kind of manufacture method of stepless speed changes devices, this stepless speed changes devices has centrifugal clutch, and have: driven pulley, it is made of aluminium moulding product, the endless belt of can reeling between itself and the drive pulley by engine-driving rotation; The drive plate of centrifugal clutch, it is connected with the external thread part that is formed on this driven pulley by fastening nut, thereby can rotate with this driven pulley; Shell is used in output, and it covers the periphery of this drive plate at least, and is connected on the driven shaft; Clutch weight, it is supported on the above-mentioned drive plate by the rotatable earth's axis, and under the action of centrifugal force that produces following this drive plate rotation, use the interior perimeter surface butt of shell with transferring power by friction material and above-mentioned output, the manufacture method of described stepless speed changes devices is characterised in that, circle shape part is carried out pressure forming form end difference, then, make above-mentioned iron parts by the above-mentioned external thread part of cutting on outer surface, and these iron parts are carried out pre-buried moulding form driven pulley.
And then preferred the present invention carries out pre-buried moulding after boring processing is implemented in the side of above-mentioned circle shape part.In addition, preferably by above-mentioned end difference, when the above-mentioned pre-buried moulding of the interior Zhou Jinhang of the above-mentioned iron parts of larger diameter side, above-mentioned aluminium is spread, after pre-buried moulding, by the above-mentioned aluminium that spreads is carried out cutting, the interior perimeter surface of above-mentioned iron parts is exposed, thereby formed the bearing portion of driven pulley.
According to the present invention, because the external thread part of driven pulley is made of iron parts, and form this driven pulley by these iron parts of pre-buried moulding, therefore, can improve the intensity of the joint between driven pulley and the drive plate, durability is improved, simultaneously, can seek to cut down component number and weight reduction.
In addition, according to the present invention, form in the side on the side of an end of porose circle shape part and form external thread part, constitute thus by pre-buried iron parts, therefore, when pre-buried moulding, in the hole of side, make aluminium injection moulding, thereby can improve the pull-out capacity of iron parts aluminium.
In addition, manufacturing method according to the invention, when the pre-buried moulding of core of the outer diameter part of the core of iron parts 2b and outstanding axial region 2a, even be offset a little moulding, owing to after moulding, the aluminium that spreads is carried out cutting, has very high concentricity so also can make between the external diameter of through hole 2c and outstanding axial region 2a.
Description of drawings
Fig. 1 is the schematic cross-section of automatic transimission of the band centrifugal clutch of expression embodiment of the present invention.
Fig. 2 is the schematic cross-section of fixed pulley of the driven pulley in the automatic transimission of this band centrifugal clutch of expression.
Fig. 3 is the schematic representation of manufacturing process of the iron parts 2b in the automatic transimission of this band centrifugal clutch of expression, (a) sectional view of expression circle shape part, (b) sectional view of the workpiece after the pressure processing has been implemented in expression, (c) boring processing has been implemented in expression, the sectional view of the workpiece after the side forms through hole, (d) cutting has been implemented in expression, is formed with the sectional view of the workpiece of external thread part.
Fig. 4 is the fixed pulley of the driven pulley in the automatic transimission of this band centrifugal clutch, represents the schematic cross-section of the state after the pre-buried moulding of iron parts.
Fig. 5 is the schematic representation of cutting process of the fixed pulley of the driven pulley in the automatic transimission of this band centrifugal clutch of expression, (a) sectional drawing of the state of expression fixed pulley after pre-buried moulding just, (b) the be fixedly clamped outer diameter part of outstanding axial region 2a of pulley of expression comes the inside diameter etc. of cutting fixed pulley, thereby form the sectional view behind the through hole 2c, (c) the expression outer diameter part of pulley that is fixedly clamped, to the axial region external diameter of fixed pulley and as and the V-type band between the conical surface α of surface of contact implement sectional view after the cutting, (d) inside diameter of the fixed pulley after being illustrated in cutting and finishing inserts and rigid bearing B1, B2, and the sectional view of the state after having carried out assembling.
Label declaration
1 ... driven pulley
2 ... fixed pulley
2a ... outstanding axial region
2b ... iron parts
2c ... through hole
2ba ... through hole
2bb ... through hole
2bc ... external thread part
2e ... the flank of tooth
2d ... interior perimeter surface
3 ... movable sheave
3a ... resin liner
3c ... cam
4 ... centrifugal clutch
5 ... drive plate
5a ... clutch weight
5b ... the clutch weight pin
5c ... cam
5d ... friction material
5e ... cartridge unit
5f ... clutch spring
SP ... spring
6 ... shell (output shell)
6a ... insert through hole
6b ... cartridge
6c ... perimeter surface in the flange part
7 ... driven shaft
8 ... nut
8a ... packing ring
9 ... tightening nut
9a ... packing ring
10 ... V-type band (endless belt)
B1 ... needle bearing
B2 ... ball bearing
B3 ... ball bearing
D ... end difference
E ... circle shape part
α ... the conical surface as the surface of contact between fixed pulley 2 and the V-type band
β ... the conical surface as the surface of contact between movable sheave 3 and the V-type band
Embodiment
Below, to embodiments of the present invention, describe particularly with reference to the accompanying drawings.
The V-type Belt-type Adjustable-speed device of the band centrifugal clutch of present embodiment, be used for carrying out the transmission and the cut-out thereof of the engine-driving power of scooter formula two-wheeled motor vehicle, simultaneously, make gear ratio changeably to the driving wheel transferring power, as shown in Figure 1, this stepless speed changes devices mainly is made of driven shaft 7, driven pulley 1, centrifugal clutch 4 and drive pulley (not shown).Centrifugal clutch 4 mainly has: shell 6, and it is connected with driven shaft 7, and is cup-shaped; Drive plate 5, it is connected with outstanding axial region 2a as the fixed pulley 2 of input block; Friction material 5d, its can with the interior perimeter surface frictional fit of shell 6.A plurality of clutch weight 5a are installed in rotation on the drive plate 5 by clutch weight pin 5b, and are subjected to along the direction applied force of removing the frictional fit of above-mentioned friction material 5d from above-mentioned shell 6 by clutch spring 5f.
Between driven pulley 1 and drive pulley (not shown), be wound with the V-type band 10 (endless belt) of rubber system by the engine-driving rotation.Described driven pulley 1 is made of fixed pulley 2 and the movable sheave 3 that aluminium moulding product constitute, and forms conical surface α and β respectively in the separating part of these fixed pulleys 2 and movable sheave 3.On these conical surfaces α and β, embed V-type band 10, thereby can between the conical surface and drive pulley, hang this V-type band 10.
Fixed pulley 2 has outstanding axial region 2a, should give prominence to axial region 2a axially giving prominence to integratedly along movable sheave 3 sides, be provided with through hole 2c at the center of this outstanding axial region 2a, in this through hole 2c, set needle bearing B1 and ball bearing B2, driven shaft 7 can be inserted through and rotate freely.Movable sheave 3 by resin liner 3a by axle be supported on this fixed pulley 2 outstanding axial region 2a periphery and slide freely, and can move axially relatively and can relatively rotate.In addition, movable sheave 3 is connected on the drive plate 5 by cam 3c, the cam 5c that constitutes twisting force cam, and allows a little phase difference of existence.
So the driven pulley 1 that is made of fixed pulley 2 and movable sheave 3 is subjected to the rotating force effect of the V-type band 10 between two pulleys 2,3 and can rotates when can being supported by axle with the relative rotation with respect to driven shaft 7.And iron parts 2b forms one by pre-buried moulding with fixed pulley 2, about described iron parts 2b, will narrate in the back.
Movable sheave 3 has following structure, that is: it passes through spring SP, always be subjected to power from the direction of the conical surface α of fixed pulley 2 to the conical surface β that makes movable sheave 3 that apply near, when the undergauge action of the V-type band 10 in the driven pulley 1 is worked, the active force of this movable sheave 3 antagonistic spring SP is to moving away from the direction of fixed pulley 2 (left among Fig. 1 to).Promptly, when the revolution of motor increases, the Embedded Division of the V-type band 10 of drive pulley side narrows down, thereby effective radius increases, simultaneously, the V-type band 10 of driven pulley 1 side is moved to the direction of arrow of Fig. 1, be subjected to described effect, movable sheave 3 direction (direction of the reduced of the Embedded Division of V-type band 10) left moves, thereby is changed to top gear.Like this, in the automatic transimission of present embodiment, has the structure of carrying out gear shift according to the speed of a motor vehicle automatically.
Drive plate 5 is connected on the fixed pulley 2, and can be with this driven pulley 1 rotation, radially (above-below direction of Fig. 1) mobile clutch weight 5a is equipped on the outside diameter of this drive plate 5 rotationally by planting the clutch weight pin 5b that is inserted in the drive plate 5.Promptly, when the revolution of driven pulley 1 reaches predetermined value when above, clutch weight 5a is under its action of centrifugal force, opposing clutch spring 5f inwardly elastic force and rotate to the hole enlargement direction, thereby move to the external diameter direction, perimeter surface 6c butt in the friction material 5d of clutch weight 5a and the flange part of shell 6, thus shell 6 is driven to rotate, and realizes clutch.
Shell 6 covers the periphery of drive plate 5 and is provided with, and is cup-shaped, inserts through hole 6a in about central part formation of shell 6, inserts among through hole 6a the cartridge 6b that (for example, by connections such as welding) formation is integratedly extended to driven pulley 1 side at this.Interior perimeter surface at cartridge 6b forms spline, is used for the spline engagement that forms on the outer surface with driven shaft 7.
Front end periphery at driven shaft 7 forms external thread part.Then, the cartridge 6b of shell 6 is inserted from the front end (being left end among Fig. 1) of driven shaft 7, and make it to form spline fitted with the spline part of driven shaft 7, then, put into packing ring 9a, tightening nut 9 is screwed on the external thread part of driven shaft 7, the end difference of butt driven shaft 7 and tightening, so the cartridge 6b of the inner ring of ball bearing B2 and shell 6 is fixed between the end difference and tightening nut 9 of driven shaft 7, driven shaft 7 just can the one rotation with the shell of centrifugal clutch 4.
In addition, connect not shown speed reducer (constituting), just can slow down and drive the trailing wheel of two-wheeled motor vehicle by reduction gear etc. at the end side of driven shaft 7.
So, when driven pulley 1 reaches predetermined revolution, the friction material 5d of clutch weight 5a under its action of centrifugal force with the flange part of shell 6 in perimeter surface 6c butt, thereby the rotating force of this driven pulley 1 and drive plate 5 is passed on the driven shaft 7 by shell 6, and the trailing wheel of two-wheeled motor vehicle is driven.And the label B3 among this figure represents to be used to support the ball bearing that driven shaft is 7 that freely rotate, be provided in the two-wheeled motor vehicle side.
Herein, on the fixed pulley 2 in the present embodiment, as mentioned above, iron parts 2b is integrated with it by pre-buried moulding, and forms the external thread part 2bc that can screw iron nut 8.In addition, form end difference in the outer end of the fixed pulley 2 of aluminum, and form flank of tooth 2e simultaneously.That is, at the front end of iron parts 2b, as shown in Figure 2, formation can screw the external thread part 2bc in the internal thread of nut 8.Then, make the cartridge unit 5e of drive plate 5 carry out flank of tooth cooperation on one side, be inserted on the outstanding axial region 2a of fixed pulley 2 on one side, next, when making packing ring 8a and nut 8 screw and be tightened on the external thread part 2bc, drive plate 5 is fixed between the end difference and nut 8 of outstanding axial region 2a, thereby fixed pulley 2 is connected with drive plate 5.
Particularly, iron parts 2b is for example by obtaining via following operation.Prepare the circle shape part E made of iron shown in Fig. 3 (a), it is implemented pressure processing, make it become the shape that has as the end difference D of this figure (b).By obtaining this shape, when seeking mass production, cost is reduced by such pressure processing.And the outer ring of ball bearing B2 is connected to this end difference D.
After the operation of this figure (b), implement boring processing at its outer surface.That is,, along the circumferential direction equally spaced be respectively formed at 4 the through hole 2ba and the through hole 2bb of axially-spaced distance as (c) of this figure.And then distolateral outside enforcement cutting shown in this figure (d), obtains iron parts 2b by forming the external thread part 2bc that can screw with the internal thread of nut 8.The iron parts 2b that obtains like this is placed in the die casting mould die cavity of the fixed pulley 2 that is used for moulding driven pulley 1, by the aluminium that injects fusion by pre-buried this fixed pulley 2 that is molded over.
Through in the fixed pulley 2 of aforesaid manufacturing process, as shown in Figure 4, in the through hole 2ba of iron parts 2b and 2bb, inject aluminium as shaping material, in addition, interior week also inject aluminium in the big footpath of end difference D side.Make this iron parts 2b have enough pull-out capacities to fixed pulley 2.Thereby, compared with on the outer surface of pre-buried product, forming annular knurl, or form the technology that radially outstanding flange etc. carries out pre-buried moulding and come, can simultaneously, can reduce the size radially of fixed pulley 2 with making at a low price.Thereby, can realize the cost degradation and the miniaturization of speed change gear integral body.
As shown in Figure 4, in the fixed pulley after pre-buried moulding 2, the internal diameter of its through hole 2c ' is set to less than design size, in addition, the external diameter of outstanding axial region 2a is set to greater than design size, thereby the wall portion of outstanding axial region 2a is thicker, by making it, form the through hole 2c (with reference to figure 2) and the outer diameter part that meet design size through cutting shown in Figure 5.
That is, fixed pulley 2 is carried out cutting shown in Figure 5.By cutting, the interior perimeter surface of above-mentioned iron parts is exposed, thereby formed the bearing portion of driven pulley.
At first, for the fixed pulley 2 shown in Fig. 5 (a) (identical) with fixed pulley 2 shown in Figure 4, such shown in Fig. 5 (b), clamp the outer diameter part of outstanding axial region 2a with chuck CK1, make on one side the outer diameter part and the through hole 2c ' of fixed pulley 2 wait rotation, cut on one side (position that cutting position is the Δ symbolic representation of usefulness Fig. 5 (b)), thereby repair outer diameter part, in addition, through hole 2c is trimmed to design size.At this moment,, spread the aluminium (sometimes, the part of the interior perimeter surface of iron parts 2b) in week in the iron parts 2b of into big footpath side by cutting, the interior perimeter surface 2d of above-mentioned iron parts is exposed, thereby form the bearing portion of driven pulley end difference D.In addition, when the pre-buried moulding of core of the outer diameter part of the core of iron parts 2b and outstanding axial region 2a, even a little skew is arranged during moulding, if adjusting bite, make the interior perimeter surface of iron parts 2b be cut a little, the external diameter of through hole 2c and outstanding axial region 2a is made, in addition with very high coaxality, can process the internal surface of iron parts 2b, make it all consistent with the internal surface of through hole 2c.Thereby, the higher part of load of the forward end of outstanding axial region 2a is carried out the ball bearing B2 that axle supports and the direct butt of iron parts 2b of fixed pulley 2, therefore, fatigue deformation can not take place in through hole 2c.
Secondly, fixed pulley 2 clamps outer diameter part again with chuck CK2 as Fig. 5 (c) shown in, and the outer diameter part and the conical surface α that give prominence to axial region 2a are rotated, and meanwhile cut, thus the outer diameter part and the conical surface are trimmed to predetermined design size.
And then the fixed pulley 2 of the above-mentioned manufacturing process of process is pressed into ball bearing B2 up to end difference D, and stops it to deviate from snap ring shown in Fig. 5 (d) in through hole 2c, and thereafter, B1 is pressed into the precalculated position with needle bearing.Thereby, on fixed pulley 2, install needle bearing B1 and ball bearing B2.
And, fixed pulley 2 is shown in Fig. 5 (b), its bite is very little, thereby, owing to cut through hole 2c and outer diameter part by the outer diameter part that clamps the higher outstanding axial region 2a of dimensional accuracy, the outer diameter part that clamps afterwards as the best of benchmark portion cuts the outer diameter part of outstanding axial region 2a, so can make the external diameter of outstanding axial region 2a and the processing that through hole 2c has good coaxality.
Thereby, make the interior perimeter surface of the iron parts 2b that covers by the aluminium forming part consistent with through hole 2c.Thereby the dimensional accuracy during the aluminium moulding needn't require very high, can improve operability.In addition, because external diameter and the through hole 2c of outstanding axial region 2a have good coaxality, therefore, can guarantee that fixed pulley 2 and movable sheave 3 have very high coaxality.
According to said structure, because the external thread part 2bc of driven pulley 1 is made of iron parts 2b, and form the fixed pulley 2 of this driven pulley 1 by this iron parts 2b of pre-buried moulding, therefore, joint between driven pulley 1 and the drive plate 5 is screwing between nut 8 made of iron and the external thread part made of iron, thereby can improve its intensity, durability is improved.In addition, all use ironly, only make belt pulley portion be aluminium moulding product if be formed with all sites that makes driven shaft 7 run through through hole wherein, and both are fixed up by rivet etc., compare with such structure, can cut down the component number, realize light and low cost by above-mentioned structure.And then, owing to constituted by the parts that on an end side surface of circle shape part, form external thread part by pre-buried iron parts 2b, this circle shape part is formed with through hole on the side, therefore, when pre-buried moulding, in the through hole of side, inject aluminium and carry out moulding, iron parts are improved the pull-out capacity of aluminium.
More than, present embodiment is illustrated, but the present invention is not limited to this, for example, also can be applied in the driven pulley that does not have movable sheave.That is, in the speed change gear of present embodiment, constitute driven pulley by fixed pulley and movable sheave, make it possible to automatically carry out gear shift according to the speed of a motor vehicle, only transmit or cut off in the speed change gear of engine power but also can be applied in.In addition, the iron parts of pre-buried moulding are not limited in the situation of present embodiment in driven pulley, it can wait shape is carried out various changes by the equipping position of ball bearing B2, perhaps, also can at random change shape, position or the quantity of the through hole that forms in the side.
In addition, in the present embodiment, scooter formula two-wheeled motor vehicle is illustrated, but also can be applied in the two-wheeled motor vehicle beyond the scooter formula, in addition, also can be applied in two-wheeled motor vehicle vehicle in addition, and then, also can be applied in the power unit of the formula of fixedly installing.
In addition, show the example that on iron parts 2b, constitutes external thread part 2bc, but the present invention can be applied in also in the situation that constitutes internal thread part at present embodiment.
So long as the speed change gear of such band centrifugal clutch that forms, that is: the screw section of driven pulley is made of iron parts, and these iron parts of pre-buried moulding, thereby forming this driven pulley, then also can use in the different or additional device that other function arranged at face shaping.
Claims (7)
1. stepless speed changes devices with centrifugal clutch has:
Driven pulley, it is made of aluminium moulding product, the endless belt of can reeling between itself and the drive pulley by engine-driving rotation;
The drive plate of centrifugal clutch, its by fastening nut be formed on this driven pulley on external thread part be connected, thereby can rotate with this driven pulley;
Shell is used in output, and it covers the periphery of this drive plate at least, and is connected on the driven shaft; With
Clutch weight, it is supported on the described drive plate by the rotatable earth's axis, and under the action of centrifugal force that produces in the rotation of following this drive plate, and the interior perimeter surface butt by friction material and described output usefulness shell is with transferring power,
It is characterized in that,
The external thread part of described driven pulley is made of iron parts, and forms this driven pulley by these iron parts of pre-buried moulding.
2. stepless speed changes devices as claimed in claim 1 is characterized in that,
Described iron parts are to form described external thread part at one end the outer surface and circle shape part that through hole is set on side face simultaneously.
3. stepless speed changes devices as claimed in claim 2 is characterized in that,
The axially-spaced spacing of described circle shape part a plurality of described through holes are set.
4. stepless speed changes devices as claimed in claim 1 or 2 is characterized in that,
Described iron parts form end difference by circle shape part is carried out pressure processing,
Carry out the axle support by outer ring and this end difference butt that makes bearing.
5. the manufacture method of a stepless speed changes devices, this stepless speed changes devices has centrifugal clutch, and has:
Driven pulley, it is made of aluminium moulding product, the endless belt of can reeling between itself and the drive pulley by engine-driving rotation;
The drive plate of centrifugal clutch, its by fastening nut be formed on this driven pulley on external thread part be connected, thereby can rotate with this driven pulley;
Shell is used in output, and it covers the periphery of this drive plate at least, and is connected on the driven shaft; With
Clutch weight, it is supported on the described drive plate by the rotatable earth's axis, and under the action of centrifugal force that produces in the rotation of following this drive plate, and the interior perimeter surface butt by friction material and described output usefulness shell is with transferring power,
The manufacture method of described stepless speed changes devices is characterised in that,
Circle shape part is carried out pressure forming form end difference, then, make described iron parts, and these iron parts are carried out pre-buried moulding form driven pulley by the described external thread part of cutting on outer surface.
6. the manufacture method of stepless speed changes devices as claimed in claim 5 is characterized in that,
After boring processing is implemented in the side of described circle shape part, carry out pre-buried moulding.
7. as the manufacture method of claim 5 or 6 described stepless speed changes devicess, it is characterized in that,
By described end difference, when the described pre-buried moulding of the interior Zhou Jinhang of the described iron parts of larger diameter side, described aluminium is spread, after pre-buried moulding, by the described aluminium that spreads is carried out cutting, the interior perimeter surface of described iron parts is exposed, form the bearing portion of driven pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101154144A CN101122322A (en) | 2006-08-08 | 2006-08-08 | Stepless gear change with centrifugal clutch and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101154144A CN101122322A (en) | 2006-08-08 | 2006-08-08 | Stepless gear change with centrifugal clutch and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101122322A true CN101122322A (en) | 2008-02-13 |
Family
ID=39084777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101154144A Pending CN101122322A (en) | 2006-08-08 | 2006-08-08 | Stepless gear change with centrifugal clutch and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101122322A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705181A (en) * | 2012-05-31 | 2012-10-03 | 上海大学 | Starting device for vertical axis wind turbine (VAWT) |
| CN103912664A (en) * | 2012-12-28 | 2014-07-09 | 川崎重工业株式会社 | V-belt type continuously variable transmission |
| CN111601986A (en) * | 2018-02-07 | 2020-08-28 | 阪东化学株式会社 | Counterweight roller, manufacturing method thereof and mold for manufacturing counterweight roller |
-
2006
- 2006-08-08 CN CNA2006101154144A patent/CN101122322A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705181A (en) * | 2012-05-31 | 2012-10-03 | 上海大学 | Starting device for vertical axis wind turbine (VAWT) |
| CN102705181B (en) * | 2012-05-31 | 2014-04-02 | 上海大学 | Starting device for vertical axis wind turbine (VAWT) |
| CN103912664A (en) * | 2012-12-28 | 2014-07-09 | 川崎重工业株式会社 | V-belt type continuously variable transmission |
| CN103912664B (en) * | 2012-12-28 | 2016-07-06 | 川崎重工业株式会社 | V-type variable v-belt drive |
| CN111601986A (en) * | 2018-02-07 | 2020-08-28 | 阪东化学株式会社 | Counterweight roller, manufacturing method thereof and mold for manufacturing counterweight roller |
| CN111601986B (en) * | 2018-02-07 | 2021-07-20 | 阪东化学株式会社 | Counterweight roller, manufacturing method thereof and mold for manufacturing counterweight roller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020119846A1 (en) | Variable-speed V-belt drive for vehicle | |
| US8425355B2 (en) | Belt-type continuous stepless speed changer | |
| CN101421540A (en) | Tensioner for flexible drives | |
| JP2021193315A (en) | Stepless speed variator including device which changes shift curve | |
| CN105179618A (en) | Tensioning device and method for assembling such a tensioning device | |
| KR20050008824A (en) | Cone disc infinitely-variable gearbox | |
| CN109665056A (en) | Flywheel and ontology for being installed on bicycle rear wheel hub | |
| US11624427B2 (en) | Continuously variable transmission | |
| CN101122322A (en) | Stepless gear change with centrifugal clutch and its manufacture method | |
| EP2530349B1 (en) | Centrifugal clutch device | |
| CN109386570A (en) | A kind of unidirectional vibration damping decoupler | |
| JP6872605B2 (en) | Continuously variable transmission with a device that changes the transmission curve | |
| US8925404B2 (en) | Starting device for an internal combustion engine | |
| TWI278407B (en) | Continuously variable ratio drive | |
| JP2006038124A (en) | Centrifugal clutch device and its manufacturing method | |
| CN105090263A (en) | Spiral splines tapered weight clutch | |
| JP2004257458A (en) | Belt-type continuously variable transmission | |
| TWI732907B (en) | Continuously variable transmission | |
| TWI385328B (en) | A stepless speed change device with centrifugal clutch and its manufacturing method | |
| CN103727152A (en) | Mechanical double-acting caliper assembly and calipers comprising mechanical double-acting caliper assembly | |
| TWI337235B (en) | Control system for a gearshift | |
| EP2765337A1 (en) | Belt-type electronically-controlled continuously variable transmission and vehicle equipped therewith | |
| JP6176060B2 (en) | Electric actuator | |
| JP7522518B2 (en) | Pulley device and centrifugal clutch | |
| US20230184312A1 (en) | Variable pitch pulley |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080213 |