CN1057737C - Drive pulley unit in pedal vehicles with stepless transmission comprising an automatic device for facilitating starting - Google Patents

Drive pulley unit in pedal vehicles with stepless transmission comprising an automatic device for facilitating starting Download PDF

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Publication number
CN1057737C
CN1057737C CN95104217A CN95104217A CN1057737C CN 1057737 C CN1057737 C CN 1057737C CN 95104217 A CN95104217 A CN 95104217A CN 95104217 A CN95104217 A CN 95104217A CN 1057737 C CN1057737 C CN 1057737C
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CN
China
Prior art keywords
wheel assembly
belt wheel
driving belt
reaction member
belt pulley
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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.)
Expired - Fee Related
Application number
CN95104217A
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Chinese (zh)
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CN1121019A (en
Inventor
皮埃鲁·巴迪尼
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Piaggio and C SpA
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Piaggio and C SpA
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Publication of CN1121019A publication Critical patent/CN1121019A/en
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Publication of CN1057737C publication Critical patent/CN1057737C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N3/00—Other muscle-operated starting apparatus
    • F02N3/04—Other muscle-operated starting apparatus having foot-actuated levers

Abstract

In pedal vehicles with stepless transmission, a drive pulley unit comprising an automatic device for facilitating starting, in which the drive pulley comprises a pair of half pulleys mounted on a shaft, the first being axially fixed and the second being axially movable relative to the first, between the two half pulleys there being positioned a drive belt engaging against walls of the two half pulleys, which depending on their distance apart determine low gear or high gear, associated with the drive pulley unit there being provided a gear position regulator consisting of a counteracting element associated with the movable second half pulley via radially movable rolling bodies inserted in respective housings, wherein to the counteracting element there are connected radially oscillable centrifugal masses which are associated with an elastic element and interact with the rolling bodies at low speeds to cause the half pulleys to assume a position of maximum approach, determining high gear.

Description

The driving belt wheel assembly of the foot-operated self-propelled vehicle of stepless transmission
The present invention relates to the driving belt wheel assembly of the foot-operated self-propelled vehicle of stepless transmission, this assembly comprises an operatorless device that is used for convenient starting.
For V-belt operation,, be on the two-wheeled vehicle of little cubic capacity with one of main application fields of the stepless transmission of extensible belt pulley form.This major cause is a practicality, the economy of constructional simplicity and enforcement.
By change the diameter that belt twines simply on belt pulley, just can finish the function of transmission in this respect.Usually, cooperate by rolling body with the driving belt wheel assembly to form a number of revolution per minute regulating control, usually roller arrays at movable half belt pulley and a pin between the opposed member on the axle drive shaft.The driving belt wheel assembly for example can be formed under the situation that an automatic no oily centrifugal arrangement of clutch is arranged by two and half belt pulleys and an antagonistic spring.
In addition, to the motor two-wheel car, as the mini-motorcycle of most economical type, step tread is born additional function.For the vehicle that drives with foot-operated mode, pedal also is used to start engine except pin rest and the usual function as accessory.In the case, by the axial drive wheel transmission action of chain, then used to power to the engine transmission by wheel shaft and to have passed on designed parts, i.e. reduction gear and gear by pedal.
The operating system that has advantage on system's simplicity and economy is forced design constraints to automatic transmission.The fact when being stopped by engine is extended out, transmits the low-grade transmission of automatically adopting the underneath drive ratio.Therefore, select very underneath drive ratio, improve combining with best pedal stroke, can make starting difficulty, because total system has to strengthen in starting process.
Address this problem and provide in the start system of an acceptable load of stretcher attempting, adopt to have the transmission that moderate transmitting ratio changes.This combines with very low pedal stroke transmitting ratio, and in addition the reducing valve of operating in starting process is installed on the cylinder head.
In the time all need on flat-out acceleration and accelerating project, preferable performance being arranged at any time, realized having the transmission that big speed ratio changes (scope＞2).Said system can not be used, and system can not replace with Electronic starting, and these are not suitable for mini-motorcycle and too luxurious beyond doubt very much.
The objective of the invention is provides the driving belt wheel assembly on the foot-operated self-propelled vehicle of stepless transmission, this assembly starting for convenience comprises an operatorless device, and the easy use of this operatorless device also needs minimum power, is simple simultaneously and the relatively low cost making.
As long as can achieve the goal according to the present invention, on the foot-operated self-propelled vehicle of stepless transmission, the driving belt wheel assembly comprises the operatorless device of a convenient starting, drive pulley described in the assembly comprises a pair of half belt pulley that is installed on the axle, the first half belt pulleys are axial restraints, the second half belt pulleys can move axially with respect to the first half belt pulleys, driving belt of preparation between described two and half belt pulleys, this strap surface engages described two and half pulley disc walls, half belt pulley is determined low-grade transmission or high-grade transmission according to the distance that they separate, provide a gear regulating control with described driving belt wheel assembly is linked together, regulating control is made up of a reaction member, this element links to each other with described movably second half belt pulley through radially removable rolling body, rolling body is inserted in separately the consent, be characterized in that described reaction member directly upwards links on the centrifugal body that can swing, centrifugal body and elastic element are linked together, and under low speed with described rolling body mutual action, make described half belt pulley take maximum approaching position, thereby determine high-grade transmission.
Assembly with this device can make the foot pedal starting system to having the automatic transmission held stationary of big opereating specification, therefore has preferable performance.This is because it provides the transmitting ratio of an appropriateness and has reduced power to pedal.
Driving belt wheel assembly on the foot-operated self-propelled vehicle of stepless transmission comprise the performance of the operatorless device that is used for convenient starting by the present invention and advantage from the detailed description that hereinafter provides by showing more significantly with reference to the appended graphic infinite example:
Fig. 1 is the section that passes the driving belt wheel assembly I-I line on the foot-operated self-propelled vehicle of stepless transmission on Fig. 2, comprises one in the assembly and is used for the operatorless device of convenient starting by the present invention, and this device is in the primary importance that engine stops;
Fig. 2 is counteraction roller of representing on Fig. 1 and the section that has the II-II line that shows the centrifugal body of local section;
Fig. 3 is the cross sectional drawing that the engine that is similar to Fig. 1 is in the second place of work;
Fig. 4 is the detail drawing that passes the section of Fig. 2 IV-IV line, expresses with disk, dowel fixes, and centrifugal body is around the swing of axle nail;
Fig. 5 is the section detail drawing that is similar to Fig. 1 and Fig. 3, and driving belt wheel assembly and set-up diagram by the part 1/2nd of apparatus of the present invention are shown; With
Fig. 6 and 7 is that two conditioner unit are taken from from top and from following plan view.
These figure diagrams show by the present invention and comprise driving belt wheel assembly on the foot-operated self-propelled vehicle of stepless transmission of the operatorless device that is used for convenient starting.Can regard as: be installed on the drive pulley according to operatorless device of the present invention, make half belt pulley move when engine stops on the paramount shelves driving device, promptly two and half pulley assemblies of driving belt wheel assembly reach maximum approaching.
These figure indicate especially clearly, and the driving belt wheel assembly is arranged on the extendible portion 11 of axle drive shaft (not shown) with (automatically) device.And the driving belt wheel assembly comprises one half belt pulleys 12 and 13, the first half belt pulleys, 12 axial restraints to be installed, and the second half belt pulleys 13 can move axially with respect to the first half belt pulleys 12 along axle extendible portions 11.Configuration driven belt 14 between two and half belt pulleys 12 and 13, this belt lean against on the Pan Bi of half belt pulley 12 and 13 and engage, and the distance that half belt pulley 12 and 13 separates according to them is determined low-grade transmission or high-grade transmission.
The extendible portion 11 of axle is with tooth on outside face 15, configuration bearing shell 16,16 is fixed by supercentral nut 17 through packing ring on this tooth, forms the parts of transmission regulating controls in the middle of counteraction braking components 18.Reaction member 18 is by a scrolling series body, and the roller 24 that for example is positioned at a series of consents is linked on half belt pulley 13, and consent is to be provided by the element of facing mutually.Consent or cavity 19 provide in half belt pulley 13, and complementary consent or cavity 37 provide in reaction member 18.Because the roller 24 that half belt pulley 13 and reaction member 18 footpaths upwards are inserted into limits.So improved the moment of torsion transmission, reaction member 18 is fixed on the extendible portion 11 of axle by pin.
Centrifugal body 20 passes through hole 36 and cavity 37 corresponding being positioned in the reaction member 18.Centrifugal body 20 can be around axle nail 21 swings that are positioned on the relative seat 10.The 10th, provide in the bottom of reaction member 18, element 18 is lateral to hole 36.Axle nail 21 is located with reaction member 18 rigid attachment by for example one group of three fixing screw 23 by disk element 22.
Centrifugal body 20 and half belt pulley 13 cut open towards between the circular portion 35 of the inside face of each cavity 19, as prescribed inserts roller 24, during roller also becomes part insertion consent 37 like this, is limited to these part interphase interactions.In this respect, centrifugal body 20 is S shapes and is positioned at through hole 36,36th, by what provide in the reaction member 18.First end 25 of each centrifugal body can be with relative position 26 contacts and be not inserted into, 26 is that the center bush of half belt pulley 13 provides.Second end 27 has embodied actual quality, when 27 motions radially outward when rotating, swing in the receiving element 28 of cap shape.Element 28 is positioned with axle extendible portion 11 terminal rigid attachment, and is pinned on threaded part 30 by nut 29 there.The shape of through hole 36 is made and can be allowed centrifugal body move to another position from a position in swing, and vice versa.The limit stops of centrifugal body 20 is to be formed by cap shape receiving element 28 and roller 24 respectively, and roller is contacted with the interior cylindrical part 38 of half belt pulley 13 that limits by centrifugal body and is pushed.
Retainer spring 31 and the cover 32 that inserts are arranged between the back of first end 25 of cap shape receiving element 28 and centrifugal body 20.A series of reaction member 33 also work to covering 32 as roller or ball, and element 33 is packed in the centrifugal body 20 or rollably is arranged on the centrifugal body 20, possible block and wear and tear owing to eliminated, and element 33 is moved between part easily.For the ease of apparatus of the present invention being installed in the driving belt wheel assembly, mainly comprise centrifugal body 20, axle nail 21, the governor assembly of counteraction roller 33 and reaction member 18 fits together in advance with relevant disk 22 and screw 23.
Fig. 5 shows another alternate embodiments, has exempted counteraction roller or ball 33, and the bottom of first end 25 of centrifugal body 20 acts directly on the cover 32.
In these cases, roller 24 remains in the consent 37 of the consent 19 of movable half belt pulley 13 and reaction member 18, and slides along the inclined-plane on reaction member 18 34 of consent 37 bottoms.Obviously, determine half belt pulley 12 and 13 in high-grade transmission position by the driving belt wheel assembly of band operatorless device of the present invention when engine stops, promptly half belt pulley is in maximum approaching position.In this respect, centrifugal body 20 is promoted by spring 31 and cover 32, regulating control roller 24 is slided on inclined-plane 34 outwards move in consent 19 and 37.
When starting, when engine increased number of revolution per minute, because action of centrifugal force makes centrifugal body 20 rotate around axle nail 21, second end 27 of centrifugal body is outwards motion diametrically.So, till spring 31 is compressed when second end 27 of centrifugal body is run into cap shape receiving element 28 and stopped.Therefore, the result is under low-grade configuring condition, and the operatorless device that is used for convenient starting on the foot-operated self-propelled vehicle of stepless transmission by the present invention enters operation under the low relatively revolution of per minute and do not disturb the operation of associated transmission regulating control.When number of revolution per minute increased, roller 24 is the 34 top grade configurations that raise once more and reach suitable along the inclined-plane.
Comprise the driving belt wheel assembly that is used for convenient starting by the present invention owing on the foot-operated self-propelled vehicle of stepless transmission, use, can use best transmitting ratio to foot-operated transmission, because the improvement of pedal stroke is enough to satisfy the needs of mechanomotive force.
Can exempt reducing valve or device on the cylinder head expediently, facilitate advantage undoubtedly.In this respect, owing to improved the performance of engine, increased the simplicity of structure and do not need to have reached validity with structure influence because of light-up plug can be positioned.

Claims (11)

1. on the foot-operated self-propelled vehicle of stepless transmission, the driving belt wheel assembly comprises an operatorless device that is used for convenient starting, wherein, described drive pulley comprises a pair of half belt pulley (12 that is installed on the axle (11), 13), the first half belt pulleys (12) are by fixing in the axial direction and second half belt pulley (13) is being movably with respect to first half belt pulley (12) axially, configuration driven belt (14) between two described half belt pulleys, belt (14) is in the face of described two and half belt pulleys (12,13) relative card engages, half belt pulley is determined low grade or high-grade transmission according to the distance that they separate, relevant with described driving belt wheel assembly, the gear regulating control is provided, regulating control is made up of reaction member (18), reaction member (18) through diametrically movably roller (24) combine with described movably second half belt pulley (13), roller (24) inserts each consent (19,37), it is characterized in that: described reaction member (18) is linked on the centrifugal body (20) that can swing diametrically, centrifugal body (20) combines with elastic body (31) and interacts when the low speed with described roller (24), make described half belt pulley (12,13) take maximum approaching position, thereby determine high-grade transmission.
2. the driving belt wheel assembly described in claim 1, it is characterized in that: described elastic body is spring (31), is arranged in the described mutual alignment of described half belt pulley (12,13) under low speed that will determine.
3. the driving belt wheel assembly described in claim 1, it is characterized in that: described rolling body (24) is a roller.
4. the driving belt wheel assembly described in claim 1, it is characterized in that: each described centrifugal body (20) can be around axle nail (21) swing that is positioned on the seat (10), seat (10) is on described reaction member (18), and the disk that provides (22) is used to keep described axle nail (21) in place.
5. as at the driving belt wheel assembly described in the claim 4, it is characterized in that: the available screw of described disk (22) (23) is fixed on the described reaction member (18).
6. as at the driving belt wheel assembly described in the claim 1, it is characterized in that described centrifugal body (20) is the S shape, first end (25) of described S shape is bonded on the described rolling body (24), and it is also outside at radial face that second end (27) forms actual centrifugal body.
7. as at the driving belt wheel assembly described in the claim 1, it is characterized in that described consent (19) is to provide in the inside face of described half belt pulley (13), half belt pulley (13) has circular portion (35), circular portion (35) and described a scrolling series body (24) mutual action.
8. the driving belt wheel assembly described in claim 1, it is characterized in that: inclined surface (34) is inwardly providing on the part relatively in described reaction member (18), reaction member (18) is in described consent (37), and this inclined-plane forms slidingsurface to rolling body (24).
9. the driving belt wheel assembly described in claim 2, it is characterized in that: reaction member (18) is by toothed attaching parts (15,17) link on the described axle (11), describedly be used for determining described half belt pulley (12,13) spring of the mutual alignment under low speed (31) is maintained in the cap shape receiving element (28), element (28) is linked on the described axle (11) by threaded connector (29,30).
10. the driving belt wheel assembly described in claim 2 is characterized in that: described spring (31) is contained in the cover (32) on its top, and the back of first end (25) of described centrifugal body (20) acts on the cover (32).
11. the driving belt wheel assembly described in claim 10, the described back that it is characterized in that described first end (25) of described centrifugal body (20) is placed a series of reaction member (33) and is acted on the described cover (32).
CN95104217A 1994-04-14 1995-04-13 Drive pulley unit in pedal vehicles with stepless transmission comprising an automatic device for facilitating starting Expired - Fee Related CN1057737C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000705A/94 1994-04-14
ITMI940705A IT1270031B (en) 1994-04-14 1994-04-14 DRIVE PULLEY GROUP IN PEDAL VEHICLES WITH CONTINUOUS SPEED CHANGE WITH AUTOMATIC DEVICE TO FACILITATE STARTING
IT000705A/1994 1994-04-14

Publications (2)

Publication Number Publication Date
CN1121019A CN1121019A (en) 1996-04-24
CN1057737C true CN1057737C (en) 2000-10-25

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CN95104217A Expired - Fee Related CN1057737C (en) 1994-04-14 1995-04-13 Drive pulley unit in pedal vehicles with stepless transmission comprising an automatic device for facilitating starting

Country Status (7)

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EP (1) EP0677657B1 (en)
CN (1) CN1057737C (en)
AT (1) ATE169089T1 (en)
DE (1) DE69503690T2 (en)
ES (1) ES2124491T3 (en)
IT (1) IT1270031B (en)
TW (1) TW254902B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3023892B1 (en) * 2014-07-17 2017-12-01 Skf Ab PULLEY DEVICE FOR CHAIN OR BELT
TWI570339B (en) * 2015-08-13 2017-02-11 三陽工業股份有限公司 Multi-mode Continuously Variable Transmission Mechanism
DE102017205514A1 (en) * 2017-03-31 2018-10-04 Robert Bosch Gmbh Pneumatically adjustable CVT transmission

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105358C (en) * 1900-01-01
DE1001901B (en) * 1955-03-22 1957-01-31 Suedd Ilo Werk G M B H Speed-dependent regulating, continuously variable V-belt transmission, especially for motor vehicles
EP0135702A1 (en) * 1983-07-25 1985-04-03 Dahlmans Klippo Ab Belt transmission for a power lawn-mower
US4941863A (en) * 1988-03-28 1990-07-17 Kubota Ltd. Stepless speed change mechanism in belt transmission device
EP0522421A1 (en) * 1991-07-01 1993-01-13 Rieter Ingolstadt Spinnereimaschinenbau AG Method and transmission for textile machines for avoiding pattern windings during the winding of yarns

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105358C (en) * 1900-01-01
DE1001901B (en) * 1955-03-22 1957-01-31 Suedd Ilo Werk G M B H Speed-dependent regulating, continuously variable V-belt transmission, especially for motor vehicles
EP0135702A1 (en) * 1983-07-25 1985-04-03 Dahlmans Klippo Ab Belt transmission for a power lawn-mower
US4941863A (en) * 1988-03-28 1990-07-17 Kubota Ltd. Stepless speed change mechanism in belt transmission device
EP0522421A1 (en) * 1991-07-01 1993-01-13 Rieter Ingolstadt Spinnereimaschinenbau AG Method and transmission for textile machines for avoiding pattern windings during the winding of yarns

Also Published As

Publication number Publication date
ATE169089T1 (en) 1998-08-15
EP0677657B1 (en) 1998-07-29
ES2124491T3 (en) 1999-02-01
EP0677657A1 (en) 1995-10-18
ITMI940705A1 (en) 1995-10-14
IT1270031B (en) 1997-04-28
DE69503690T2 (en) 1999-03-18
CN1121019A (en) 1996-04-24
DE69503690D1 (en) 1998-09-03
ITMI940705A0 (en) 1994-04-14
TW254902B (en) 1995-08-21

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Granted publication date: 20001025