WO2017021042A1 - Transmission cvt et véhicule équipé d'une transmission cvt - Google Patents

Transmission cvt et véhicule équipé d'une transmission cvt Download PDF

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Publication number
WO2017021042A1
WO2017021042A1 PCT/EP2016/063695 EP2016063695W WO2017021042A1 WO 2017021042 A1 WO2017021042 A1 WO 2017021042A1 EP 2016063695 W EP2016063695 W EP 2016063695W WO 2017021042 A1 WO2017021042 A1 WO 2017021042A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer sleeve
cvt transmission
conical disk
housing
cvt
Prior art date
Application number
PCT/EP2016/063695
Other languages
German (de)
English (en)
Inventor
Ianislav Krastev
Daniel Schwartz
Ingo Drewe
Mykhaylo Klymenko
Rudolf Eydam
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2017021042A1 publication Critical patent/WO2017021042A1/fr

Links

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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
    • F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
    • F16H63/062—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions electric or electro-mechanical actuating means

Definitions

  • the present invention relates to a CVT transmission and a vehicle comprising a CVT transmission.
  • the present invention relates in particular to a device which actively and independently of centrifugal adjusts the gear ratio of a CVT transmission.
  • CVT Continuous Variable Transmission
  • Gear ratios can be achieved in comparison with gears with fixed gears.
  • a particular field of application of such - in particular centrifugally controlled - CVT transmissions are small vehicles, such as two-wheelers, tricycles, so-called tuk-tuks, snowmobiles, quads or scooters.
  • centrifugal weights of the mechanical centrifugal governor shift their radial position and thereby change the axial distance between two conically configured and opposite pulleys, which are also referred to as conical disks.
  • the drive belt is thereby forced to run on a radius determined by the disc spacing.
  • the centrifugal weights of the centrifugal governor thus shift their radial position, whereby an axial distance between the
  • Conical disks is changed, thereby changing a transmission ratio.
  • Fuel consumption and / or emissions of the vehicle are deteriorated. It would therefore be desirable to exploit this potential in centrifugally controlled CVT transmissions and to obtain a possibility of fuel reduction and emission reduction.
  • centrifugally controlled CVT transmissions also have regard to a
  • Vehicle dynamics no optimal design.
  • an acceleration of the vehicle from a standstill and with an acceleration of the vehicle during a journey e.g. an elasticity starting from a first speed to a second speed
  • the CVT transmission according to the invention with the features of claim 1 has the advantage over that according to the invention is possible, the
  • displaceable inner sleeve which is connected to the axially movable conical disk rotationally fixed and translationally coupled, and having an axially displaceable outer sleeve, which is arranged coaxially to the inner sleeve, with this translatorily coupled and rotatably decoupled from this, wherein the
  • Outer sleeve has a rotatably formed spindle nut, which is adapted to intervene with a rotatable, translationally fixed threaded spindle for adjusting an axial position of the axially movable conical disk to a rotationally fixed translational coupling with the outer sleeve and cooperate.
  • Intervention of a rotating stationary threaded spindle are adjustable in the spindle nut, so that over the coupling with the axially movable
  • the outer sleeve is formed substantially rotationally symmetrical to a rotational axis of the conical disk pair and the spindle nut is arranged on the axis of rotation.
  • the rotational symmetry of the outer sleeve and the arrangement of the spindle nut on the axis of rotation of the cone pulley pair make a particularly compact design of the CVT invention
  • the outer sleeve has a housing jacket and at least one first housing front side.
  • Spindle nut is preferably formed on or in the first housing front side. This can be done by any attachment of the spindle nut. It is conceivable, however, in particular, the spindle nut in form centrein Nursingiger shape in the end face of the outer sleeve. These measures result in terms of production and assembly
  • the housing shell has at least one opening, wherein the at least one opening is arranged, in the assembled state of the CVT transmission at least one element of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular a double gear of a kick starter, i. a foot actuated starting device, and in particular
  • the threaded spindle may preferably have at one end a journal, which is arranged for displaceable and rotatable bearings and / or holders of the at least one element of Kickstartes.
  • the housing shell has a bell shape with a first region of larger diameter and a second region of smaller diameter, wherein in particular the first region facing the inner sleeve and adapted for coupling with this and / or the second region of the first housing end face with the spindle nut having.
  • Bell shape of the housing shell of the outer sleeve has the possibility that the first portion of the outer sleeve comprises or surrounds a part of the inner sleeve, so that a particularly small space is occupied by nesting the inner and outer sleeve.
  • the CVT transmission is provided with a
  • Adjusting device for adjusting the axial position of the axially movable conical disk is formed, wherein the adjusting device is connected via the threaded spindle and the spindle nut with the outer sleeve, wherein the
  • the adjusting device has an actuator and is arranged so that in operation on the interaction of Stellgetriebe, threaded spindle and spindle nut rotation in the actuator in a rotation of the threaded spindle and a translational axial movement of the spindle nut and the axially movable cone pulley is changeable.
  • the provision of the adjusting device with the actuator allow the active influencing of the threaded spindle and the mandrel for adjusting the
  • a torque arm is provided, which for supporting and rotationally fixed
  • the CVT transmission is formed with a gear housing having a receptacle, wherein the outer sleeve with its first housing front side in the Recording of the
  • Transmission housing is included and where the shape of the first
  • Housing end face and the receptacle are not rotationally symmetrical and at least partially complementary to each other, so that realized by engaging the first housing face and receiving the gear housing in the circumferential direction with each other, the torque arm and a correct position mounting allows and is supported.
  • the CVT transmission is formed with a control unit which is adapted to actuate the actuator to a ratio change on
  • inventively provided measures can also be formed in an otherwise conventionally constructed CVT transmission, which is in particular formed with at least one centrifugal force element, which is movably arranged on the axially movable conical disk, and a support element, which is arranged on the axially movable conical disk, and connected to a drive or crankshaft, the
  • the present invention relates to a vehicle comprising a CVT transmission according to the present invention, wherein the vehicle is in particular a small vehicle, in particular a two-wheeled bicycle, a tricycle, a snowmobile, a quad or the like.
  • the vehicle is in particular a small vehicle, in particular a two-wheeled bicycle, a tricycle, a snowmobile, a quad or the like.
  • Figure 1 is a schematic representation of an embodiment of the CVT transmission according to the invention partly in the manner of a block diagram.
  • FIGS 2 and 3 show in sectioned and partially in perspective
  • FIGS 4 to 8 show in perspective and partially in cut
  • FIG. 9 to 11 show perspective views of details of another
  • Embodiment of the CVT transmission according to the invention with a focus on a torque arm.
  • one aspect of the present invention is to provide the possibility of a particularly electronically controlled device integrated into the, in particular conventional, centrifugally controlled system and intended for setting a target ratio of a CVT transmission.
  • the optimal operating points of a powertrain can be achieved in terms of consumption and vehicle dynamics.
  • Centrifugal weights are waived. Maintaining existing centrifugal mechanics reduces actuation efficiency and the cost of the electronically controlled device.
  • the device can thus be integrated into a conventional centrifugal force-controlled system without major structural changes.
  • Figure 1 shows in schematic form and partially in the manner of a
  • Block diagram of a first embodiment of the CVT transmission 1 according to the invention Block diagram of a first embodiment of the CVT transmission 1 according to the invention.
  • an inner sleeve 53 attached.
  • an axially movable conical disk 21 which is also referred to as a second conical disk, rotatably attached.
  • the inner sleeve 53 and the clamping sleeve 41 are closed coaxially arranged - in particular to a common
  • Symmetry axis X which coincides with a common axis of rotation and the axis of rotation X of the axially displaceable conical disk 21.
  • the inner sleeve 53 and the clamping sleeve 41 are in particular at least partially inserted into each other, wherein the inner sleeve 53 surrounds the clamping sleeve 41.
  • the inner sleeve 53 can slide along the clamping sleeve 41 in order to be axially displaced along the axis of rotation X in its position.
  • the axially displaceable conical disk 21 and the inner sleeve 53 are connected to each other, they can slide together on the clamping sleeve 41 along.
  • the axially movable conical disk 21 opposite an axially stationary conical disk 20 is arranged, which is also referred to as the first conical disk 20 and rotatably coupled to the axially movable conical disk 21, but is translationally decoupled.
  • Cone pulleys 20, 21 is running, set in motion to drive a located on a drive side drive means 13, for example, a corresponding second conical disk pair 13, which in turn is connected to, for example, a drive shaft, in particular for driving a wheel or the like.
  • a support member 4 is mounted to communicate with the
  • connection with the support element 4 on the clamping sleeve 41 is not absolutely necessary, but represents a possible measures of the centrifugally controlled translation setting of a CVT transmission, which has been frequently used. Suitable measures are provided for the support element 4 and the second conical disk 21, which ensure that the second
  • Conical disk 21 rotates at the same speed.
  • Measures can be combined with such a conventional centrifugal control, but they are so also used with advantage.
  • a centrifugal element is or defines quite generally one or more rooms with one or more ball or rollers, the rotation of the centrifugal force perpendicular to the axis of rotation away from the rotation axis - the second conical disk 21 move axially.
  • An outer sleeve 54 is rotatably coupled to the inner sleeve 53 and is rotatably decoupled, wherein the rotational decoupling is effected by a radial bearing 55.
  • the outer sleeve 54 has a housing shell 54a, a first
  • Housing end face 54 b which is provided facing away from the inner sleeve 53 on the casing 54 a, and a second housing end face 54 c, which faces the inner sleeve 53 and on which the radial bearing 55 is formed.
  • the inner sleeve 53 and the outer sleeve 54 are rotationally symmetrical with respect to the axis of rotation X of the cone pulley pair 2, wherein the outer sleeve 54 and in particular the sheath 54a surrounds the inner sleeve 53 concentrically or coaxially at least partially.
  • a spindle nut 8 is formed, which has a central bore 8a and there an internal thread 8b, in which a threaded spindle 7 can engage with its external thread 7b.
  • the outer sleeve 54 and the spindle nut 8 may be provided as separate elements by the mother 8 is embedded in the material of the outer sleeve 54.
  • a one-piece design is conceivable by eg in the front side first 54b is simply a bore 8a with internal thread 8b is formed.
  • spindle 7 and spindle pin 7c or bearing pin 7c may be formed at the end 7a as separate elements or arrangementin Anlagenig.
  • Threaded spindle 7 and the end 7a arranged coaxially with each other and the axis of rotation X as the axis of symmetry.
  • the threaded spindle 7 has on the outer peripheral surface of a thread 7b, at least outside of the pin 7c bearing end 7a thereof.
  • the thread 7b of the threaded spindle 7 is adapted to a
  • the control can be effected via first and second measuring and / or control lines 6-1 and 6-2 by means of a control unit 6, wherein the second
  • Control line 6-2 acting on the actuator 5 and the actuator 50.
  • the actuator 50 drives via a drive shaft 51, the actuating gear 52 and there engaging threaded spindle 7 for rotation, which then via the thread 7b of the translationally fixed, rotatable threaded spindle 7 and the non-rotatable
  • An essential aspect of the present invention is the active and optionally
  • the conventional control of a CVT transmission consists e.g. from a centrifugal governor on the primary side and a pressure spring with torque ramp on the secondary side.
  • the invention allows the application of the additional force of an actuator, namely operated with the actuator 5 combination of inner sleeve 53, outer sleeve 54, threaded spindle 7 and spindle nut 8, the change in the C VT ratio, regardless of the engine speed and contact forces on the secondary side.
  • centrifugal force control with centrifugal elements 3, located on a support element or a
  • an inner sleeve 53 which can also be considered as a slide bushing, with three fingers fixed to the movable pulley 21, for example by pressing, caulking or the like, be connected or be.
  • the slide bushing 53 with the attached movable pulley 21 slides on a bracing sleeve 41.
  • the kickstarter nut 66, the fixed pulley 20, the bracing sleeve 41 and the support plate 4 are fixedly connected to the crankshaft 1 1.
  • the Kickstarter nut 66 can also accommodate a fixed bearing of the spindle system. Another task of Kickstartermutter 66 is to initiate the
  • Slide bushes 53 protrude through recesses in the fixed pulley 20. With a retaining nut, a flange 68, as shown in particular in Figure 5, pressed against a stop ring and so firmly connected to the slide bushing 53.
  • An electric geared motor as actuator 50 uses a spindle system
  • the other spindle end 7a projects into the interior 54i of the outer sleeve 54 or bell, in particular with the bearing or spindle pin 7c formed at this end.
  • the distance D of the two pulleys 20 and 21 changes and thus a belt 12 running between the pulleys 20, 21 has to run on the respective diameter, which is predetermined by the pulleys 20 and 21 and their distance D.
  • the Kickstarterdoppel leopardrad 67 is mounted directly on the spindle 7 or its bearing pin 7c at the end 7a.
  • the rotation of the kickstarter drive 62 is transmitted by the drive gear 64 to the Kickstarterdoppel leopardrad 67.
  • a helical toothing causes a shift of the Kickstarterdoppeltechnikrades 67 to the crown or spur toothing engages in a crown toothing of a kickstarter nut 66. Runs the internal combustion engine 10 automatically, the first Kickstartertechnikrad 67 is easily braked by a brake spring 65.
  • FIG. 2 is a schematic and partially sectioned side view of another embodiment of the CVT transmission 1 according to the invention.
  • the housing jacket 54a of the outer sleeve 54 has a first opening 57, which is also the first one
  • Window or first recess can be understood and in which a part of a Kickstarter mechanism 60 engages in the formed as a hollow outer sleeve 54 to a first Kickstartertechnikrad 67, which is designed for example as a double gear on a second Kickstartertechnikrad 66 - here in the manner of a Kickstartermutter - access to comb with this.
  • the first Kickstarter leopardrad 67 as a double gear is on the
  • the housing shell 54a of the outer sleeve 54 has a second window, which can also be understood as a second opening or second recess 58, through which a brake spring 65 for the
  • the housing jacket 54a has a first region 54-1 with a larger diameter d1 and a second region 54-2 with a smaller diameter d2, the radial bearing 55 being in the first region 54-1 and the second Area 54-2, the spindle nut 8 are formed.
  • Figure 3 shows the embodiment of Figure 2 with the same position of the first and second conical disks 20 and 21 with respect to their axial distance from each other, wherein in Figure 3 in addition the Umschlingungsstoff 12 between the conical disks 20 and 21 is shown.
  • Figure 7 is a side cross-sectional view.
  • the outer sleeve 54 of this embodiment has a housing shell 54a with a first region or section 54-1 of larger diameter d1 and a second region or section 54-2 of smaller diameter d2.
  • the second housing portion 54-2 includes a first housing face 54b which substantially closes the opening of the housing jacket 54a.
  • the bearing pin 7c of the threaded spindle 7 projects into the interior 54i of the outer sleeve 54, directed over the first housing end face 54b.
  • the threaded spindle 7 itself engages over the bore 8a in the spindle nut 8 in the
  • the housing shell 54a has a first window 57 as a first opening. Furthermore, a second opening 58 is provided which serves to receive the brake spring 65.
  • the threaded spindle 7 is not yet mounted with the bearing pin 7c at the end 7a.
  • the threaded spindle 7 is already performed with the bearing pin 7c at the end 7a and the thread 7b through the bore 8a of the spindle nut 8.
  • FIGS. 6 to 8 additionally show elements of the kickstart device 60.
  • the Kickstartgetriebe 62 has a first Kickstarter leopardrad 67 in the manner of a double gear, which is combed from the outside of the drive gear 64 of the Kickstartgetriebes 62 of Kickstart prepared 60 and thus driven.
  • the double gear 67 in turn is mounted on the bearing pin 7c at the end 7a of the threaded spindle 7.
  • Figures 9 to 1 1 show perspective views, the gear housing 14 and the receptacle 14b in the gear housing 14 for receiving outer sleeve 54 play.
  • the outer sleeve 54 has on its first housing end face 54b - in particular in cross-section - a shape which is complementary to the shape of the receptacle 14b of the gear housing 14.
  • the first has
  • the receptacle 14b in the housing 14 has the torque support 9 in its inner peripheral surface a corresponding protuberance 14c, which can be understood as a nose or shoulder, so that according to Figure 1 1 at

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

La présente invention concerne une transmission CVT et un véhicule qui comprend une transmission CVT de ce type. La transmission CVT (1) comprend une paire de disques coniques (2) dont un disque conique fixe axialement (20) et un disque conique mobile axialement (21), une douille intérieure (53) déplaçable axialement et couplée bloquée en rotation et mobile en translation au disque conique mobile axialement (21), et une douille extérieure (54) déplaçable axialement, agencée coaxialement par rapport à la douille intérieure (53), et couplée à cette dernière en translation et découplée de cette dernière en rotation. La douille extérieure (54) présente un écrou de broche (8) bloqué en rotation qui est conçu pour venir en prise et coopérer avec une broche filetée (7) rotative fixe en translation pour le réglage d'une position axiale du disque conique mobile axialement (21) pour un accouplement bloqué en rotation translatoire avec la douille extérieure (54).
PCT/EP2016/063695 2015-08-04 2016-06-15 Transmission cvt et véhicule équipé d'une transmission cvt WO2017021042A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015214842.4 2015-08-04
DE102015214842.4A DE102015214842A1 (de) 2015-08-04 2015-08-04 CVT-Getriebe und Fahrzeug mit einem CVT-Getriebe

Publications (1)

Publication Number Publication Date
WO2017021042A1 true WO2017021042A1 (fr) 2017-02-09

Family

ID=56132933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/063695 WO2017021042A1 (fr) 2015-08-04 2016-06-15 Transmission cvt et véhicule équipé d'une transmission cvt

Country Status (3)

Country Link
DE (1) DE102015214842A1 (fr)
TW (1) TW201712252A (fr)
WO (1) WO2017021042A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN107052655A (zh) * 2017-05-31 2017-08-18 金佳琪 一种高效焊接设备

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Publication number Priority date Publication date Assignee Title
CN106979287B (zh) * 2017-05-23 2019-01-25 扬州大学 滚珠丝杆式卡盘型离散带轮无级变速器
EP3906368B1 (fr) * 2018-12-31 2023-11-15 PIAGGIO & C. S.p.A. Transmission variable en continu, unité de propulsion et véhicule à moteur comprenant ladite transmission

Citations (4)

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US7980973B1 (en) * 2006-05-01 2011-07-19 Purdue Research Foundation Coaxial electrical actuator for continuously variable transmissions
US7980972B1 (en) * 2006-05-01 2011-07-19 Purdue Research Foundation Roller variator for actuating continuously variable transmissions
WO2013015243A1 (fr) * 2011-07-27 2013-01-31 武蔵精密工業株式会社 Transmission à variation continue de type à courroie trapézoïdale
US20150011344A1 (en) * 2013-07-05 2015-01-08 Kanzaki Kokyukoki Mfg. Co., Ltd. Belt type continuously variable transmission device

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US3478610A (en) * 1967-08-03 1969-11-18 Sakai Mfg Co Ltd Stepless transmission using elastic rolling mechanism
NL1011732C2 (nl) * 1999-04-06 2000-10-09 Skf Engineering & Res Services Poelieset voor een continu variabele transmissie-eenheid.
EP1971768A4 (fr) * 2006-01-10 2009-10-14 Bajaj Auto Ltd Moteur à combustion interne à transmission variable en continu
DE102012211020B4 (de) * 2012-06-27 2022-11-24 Robert Bosch Gmbh Verstellantrieb mit Lastkompensation
JP6002614B2 (ja) * 2013-03-29 2016-10-05 武蔵精密工業株式会社 Ｖベルト式無段変速機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7980973B1 (en) * 2006-05-01 2011-07-19 Purdue Research Foundation Coaxial electrical actuator for continuously variable transmissions
US7980972B1 (en) * 2006-05-01 2011-07-19 Purdue Research Foundation Roller variator for actuating continuously variable transmissions
WO2013015243A1 (fr) * 2011-07-27 2013-01-31 武蔵精密工業株式会社 Transmission à variation continue de type à courroie trapézoïdale
US20150011344A1 (en) * 2013-07-05 2015-01-08 Kanzaki Kokyukoki Mfg. Co., Ltd. Belt type continuously variable transmission device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107052655A (zh) * 2017-05-31 2017-08-18 金佳琪 一种高效焊接设备
CN107052655B (zh) * 2017-05-31 2018-12-21 安徽英杰精工机械有限公司 一种高效焊接设备

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Publication number Publication date
TW201712252A (zh) 2017-04-01
DE102015214842A1 (de) 2017-02-09

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