WO2022127542A1 - 一种适用于全地形卡丁车的新型动力传输结构 - Google Patents

一种适用于全地形卡丁车的新型动力传输结构 Download PDF

Info

Publication number
WO2022127542A1
WO2022127542A1 PCT/CN2021/132814 CN2021132814W WO2022127542A1 WO 2022127542 A1 WO2022127542 A1 WO 2022127542A1 CN 2021132814 W CN2021132814 W CN 2021132814W WO 2022127542 A1 WO2022127542 A1 WO 2022127542A1
Authority
WO
WIPO (PCT)
Prior art keywords
sprocket
support frame
bearing seat
shaft
drive axle
Prior art date
Application number
PCT/CN2021/132814
Other languages
English (en)
French (fr)
Inventor
马亮
Original Assignee
马亮
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 马亮 filed Critical 马亮
Priority to JP2023600055U priority Critical patent/JP3245177U/ja
Priority to US17/799,906 priority patent/US20230066500A1/en
Priority to EP21905471.5A priority patent/EP4265457A1/en
Publication of WO2022127542A1 publication Critical patent/WO2022127542A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B60K17/24—Arrangements of mountings for shafting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains

Definitions

  • the invention relates to a kart structure, in particular to a novel power transmission structure suitable for an all-terrain kart.
  • the shock absorber spring is effectively used, but the disadvantage of this design is that because the rear suspension swing arm has an overall rigid structure, the unsprung mass is greatly increased, the responsiveness of the suspension on the undulating road is reduced, and the impact force from the road cannot be effectively slowed down. , Since the rear suspension swing arm has a rigid structure as a whole, it cannot form a cross-axis condition with the front axle. When the vehicle is driving on an off-road road, the tracking performance of each wheel is poor, and it cannot drive close to the road in real time, reducing the power transmission efficiency. .
  • the technical problem to be solved by the present invention is that the existing kart structure has low power transmission efficiency due to its structural design deficiencies, increases the initial investment cost and maintenance cost, and does not meet the current needs.
  • a new type of power transmission structure suitable for all-terrain karts comprising a sprocket support frame, the upper part of the sprocket support frame is provided with an upper bearing seat of the support frame, and the lower part is provided with a support frame.
  • the sprocket of mechanism 1 is installed on the sprocket bearing seat, and the lower part of the sprocket bearing seat is provided with a bolt-fixed triangular support seat;
  • One end of the bearing seat under the support frame is connected with a transmission shaft through a universal joint, and a telescopic spline is installed in the middle of the transmission shaft.
  • One end is connected with the rear drive axle sprocket bearing seat through the same universal joint, the rear drive axle sprocket bearing seat is connected with the rear drive axle through the second sprocket support frame, and the rear drive axle sprocket bearing seat is connected with a sprocket and a chain mechanism two.
  • the advantages of the present invention are: (1) the engine and the drive axle are installed separately, the engine can be installed on the vehicle frame, the unsprung mass of the drive axle is reduced, and the springback response and the drive axle are improved. the comfort of the driver;
  • the drive axle and the frame are connected flexibly by the parallel four-link and the Panhard link.
  • the drive axle can undulate and jump, and can also form a working condition of crossing shaft with the front axle.
  • This structure can be matched with the integrated through-frame structure to make the whole vehicle more beautiful; the overall structure is simple and practical, and the power output from the engine is efficiently transmitted to the rear drive axle, so that the vehicle can better adapt to off-road driving.
  • the engine can also be installed on the frame and separated from the drive axle, which reduces the unsprung mass, improves the comfort of the driver and passengers, greatly improves the power transmission efficiency of the kart, and reduces a large amount of cost investment in the early stage and maintenance costs in the later stage. , good applicability and easy promotion.
  • the bearing seat on the support frame at the upper end is installed on the output shaft at the end of the engine and fastened with a nut.
  • a chain tensioner is installed in the middle of the sprocket support frame, and the sprocket support frame is kept in a vertical position, which can also be adjusted to a suitable power transmission position.
  • the lower bearing seat of the support frame and the sprocket support frame are welded into a right angle. It is kept parallel to the rear drive axle.
  • Bearings, shafts, corresponding sprockets and universal joints are installed on the bearing seat under the support frame and fastened with bolts. Universal joints are welded at both ends of the transmission shaft.
  • One end of the drive shaft is connected to the spline shaft in the bearing seat under the support frame through a universal joint, and the other end is also connected to the rear drive axle sprocket bearing seat through a universal joint, and the universal shaft passes through the bearing seat at the end. Install the corresponding sprocket.
  • the rear drive axle sprocket bearing seat is welded together with the axle tube of the rear drive axle in parallel through the second sprocket support frame, the H-type sprocket and the second chain mechanism, and the rear drive axle sprocket bearing seat and the rear drive axle are welded together. Keep a certain installation distance, so that when the sprocket at the end of the universal joint shaft and the sprocket on the axle shaft of the rear drive axle rotate, there will be no interference.
  • the rear drive axle has a hard shaft structure as a whole.
  • the drive hard shaft is installed in the drive axle tube.
  • Bearings are installed in the bearing seats at both ends of the drive axle tube to fix the drive hard shaft.
  • the flange plate is used to install the hub of the wheel, and flange plates are welded on both sides of the drive hard shaft to fix the large sprocket and brake disc.
  • the corresponding sprocket bearing seat, bearing seat support frame, brake pump fixing bracket, brake pump, longitudinal push-pull rod seat, lateral push-pull rod seat and spring mounting bracket are respectively installed outside the drive axle tube to control the movement of the drive axle. posture position in .
  • Figure 1 is a schematic diagram of the composition of a new power transmission structure suitable for all-terrain karts.
  • a novel power transmission structure suitable for all-terrain karts includes a sprocket support frame 1 6, which is characterized in that: the upper part of the sprocket support frame 1 6 is provided with a support frame upper bearing seat 4, The lower part is provided with the lower bearing seat 9 of the support frame, the upper bearing seat 4 of the support frame is connected with the engine end output shaft 5 of the engine 1 through the adapted coupling and bearing, and a sprocket is installed on the engine end output shaft 5 and chain mechanism one 3, the sprocket and the sprocket of chain mechanism one 3 are installed on the sprocket bearing seat 2, and the lower part of the chain wheel bearing seat 2 is provided with a bolt-fixed triangular support seat 7;
  • One end of the lower bearing seat 9 of the support frame is connected with a transmission shaft 11 through a universal joint 10, and a telescopic spline 12 is added in the middle of the transmission shaft 11.
  • the telescopic spline 12 is connected to the lower bearing seat 9 of the support frame through the universal joint 10.
  • the spline shaft realizes connection and fixation; the other end of the transmission shaft 11 is connected with the rear drive axle sprocket bearing seat 13 through the same universal joint 10, and the rear drive axle chain wheel bearing seat 13 is connected by the second sprocket support frame 14 to drive the rear
  • the axle 8, the rear drive axle sprocket bearing seat 13 is connected with a sprocket and a chain mechanism II 15.
  • the sprocket support frame 1 6 has a suitable length, and the upper bearing seat 4 of the support frame at the upper end is installed on the output shaft 5 at the end of the engine and fastened with nuts.
  • the chain tensioner is installed in the middle of the sprocket support frame one 6 and the sprocket support frame one 6 maintains a vertical position, which can also be adjusted to a suitable power transmission position.
  • the lower bearing seat 9 of the support frame is welded with the sprocket support frame one 6.
  • Right-angle shape, parallel to the rear drive axle 8, the bearing seat 9 under the support frame is installed with bearings, shafts, corresponding sprockets and universal joints 10 and fastened with bolts, the two ends of the transmission shaft 11 are welded with universal joints 10, the transmission There is a telescopic spline sleeve in the middle of the shaft 11.
  • One end of the transmission shaft 11 is connected to the spline shaft in the lower bearing seat 9 of the support frame through the universal joint 10, and the other end is also connected to the rear drive axle sprocket bearing seat through the universal joint 10. 13 are connected, and the cardan shaft 10 passes through the bearing seat to install the corresponding sprocket at the end.
  • the rear drive axle sprocket bearing seat 13 is welded together in parallel with the axle tube of the rear drive axle 8 through the second sprocket support frame 14, the H-shaped sprocket and the second chain mechanism 15, and the rear drive axle sprocket bearing seat 13 Keep a certain installation distance from the rear drive axle 8, so that when the sprocket at the end of the universal joint shaft 10 and the sprocket on the axle shaft of the rear drive axle 8 rotate, no interference phenomenon occurs.
  • the rear drive axle 8 is a hard shaft structure as a whole, the drive hard shaft is installed in the drive axle tube, bearings are installed in the bearing seats at both ends of the drive axle tube to fix the drive hard shaft, and there are splines at both ends of the drive hard shaft.
  • the flange plate is used to install the hub of the wheel, and flange plates are welded on both sides of the drive hard shaft to fix the large sprocket and brake disc.
  • a corresponding sprocket bearing seat, a bearing seat support frame, a brake pump fixing bracket, a brake pump, a longitudinal push-pull rod seat, a transverse push-pull rod seat and a spring mounting bracket are respectively installed on the outside of the drive axle tube, which are used to control the drive axle in motion. posture position.
  • the working principle of the invention the power output by the end shaft of the engine transmits the power to the chain through the sprocket installed on it, and the end transmission shaft is also installed with the bearing in the upper end bearing seat of the chain support frame.
  • the function of the entire chain support frame is to Keep the distance between the small sprockets at the upper and lower ends, so that the chain can transmit power smoothly.
  • the small sprocket bearing seat on the output shaft at the end is connected with the triangular support welded in the middle of the chain support frame with bolts. The above structure can prevent the chain from transmitting power.
  • the bearing on the upper end of the chain support frame was damaged during the process.
  • the chain transmits the driving force to the small sprocket mounted on the bearing seat at the lower end of the chain support frame.
  • the small sprocket drives the spline shaft, the universal joint and its drive shaft to rotate at the same time.
  • the telescopic spline in the middle of the drive shaft can compensate for the
  • the transmission shaft is elongated or shortened during the movement to ensure the normal transmission of power.
  • the rotating transmission shaft transmits the power to the universal joint and the small sprocket installed on the drive axle.
  • the wheels at the end rotate synchronously to transmit power to the ground.
  • the relevant components such as the engine and the sprocket support frame and the bracket remain relatively stationary, the drive axle moves vertically or cross-axis with the body and the undulating road surface, and the transmission shaft telescopic splines and Universal joints can compensate for the length and angle variables of the drive shaft being elongated or compressed under various working conditions.
  • the structure adopts the engine rear-mounted and rear axle drive mode, the engine is installed on the rear axle and the upper part of the frame, the rear drive axle is installed on the lower part of the engine and the frame, and the device is installed between the engine and the rear axle, which can effectively
  • the power transmitted from the engine to the rear drive axle can also satisfy the sufficient shock absorption stroke of the rear suspension, greatly relieve the impact force, and also meet the working conditions of the cross shaft formed by the rear drive axle and the front axle, so that each wheel has a Good tracking.
  • the small sprocket is installed on the output shaft at the end of the engine, and the small sprocket is installed with a bearing seat, the upper and lower ends of the chain support frame are welded with bearing seats, the chain support seat has a suitable length, and the bearing seat on the upper end of the support frame is also installed in on the engine output shaft and fastened with a nut.
  • the middle of the chain support frame is welded with a triangular support seat, the bearing seat installed on the sprocket of the engine output shaft is fastened with a nut, the chain tensioner is installed in the middle of the chain wheel support frame, and the support frame maintains a vertical position, which can also be adjusted to a suitable power
  • the bearing seat at the lower end of the transmission chain support frame and the support frame are welded into a right angle, which is kept parallel to the rear drive axle.
  • the end is welded with a universal joint, and there is a telescopic spline sleeve in the middle.
  • One end of the transmission shaft is connected with the spline shaft in the bearing seat at the lower end of the chain support frame through the universal joint, and the other end is also connected with the drive rear axle through the universal joint.
  • the small sprocket bearing seat on the upper part is connected, and the small chain wheel is installed at the end of the universal joint shaft through the bearing seat.
  • the small sprocket bearing seat on the drive axle is welded together with the drive axle axle tube through the H-type sprocket, the support frame, and the parallel axle tube of the drive axle.
  • the small sprocket at the end of the pitch shaft does not interfere with the large sprocket mounted on the drive axle shaft when it rotates.
  • the drive axle matched with this device has an integral hard shaft structure, and the drive axle has no inter-axle differential, which has the advantages of large bearing capacity, few moving parts, and long service life.
  • Bearings are installed in the bearing seats at both ends of the bridge tube to fix the hard drive shaft, spline flanges are installed at both ends of the hard drive shaft to install the wheel hub, and flanges are welded on both sides of the hard drive shaft to fix the large chain wheels and brake discs.
  • a small sprocket bearing seat, a bearing seat support frame, a brake pump fixing bracket, a brake pump, a longitudinal push-pull rod seat, a transverse push-pull rod seat and a spring mounting bracket are respectively installed outside the drive axle tube to control the movement of the drive axle. Attitude position.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features.
  • features defined with “first” and “second” may expressly or implicitly include one or more of the features, and in the description of the present invention, “multiple” means two or two above, unless otherwise expressly specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components.
  • installed may be a fixed connection or a detachable connection Or integrally connected
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them.
  • first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • first feature is “below”, “below” and “beneath” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level less than the second feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

一种适用于全地形卡丁车的新型动力传输结构，包括链轮支撑架一（6），链轮支撑架一（6）上部设有支撑架上轴承座（4），下部设有支撑架下轴承座（9），支撑架上轴承座（4）内通过适配的联轴器及轴承连接有发动机（1）的发动机末端输出轴（5），发动机末端输出轴（5）上加装有链轮及链条机构一（3），链轮及链条机构一（3）的链轮加装在链轮轴承座（2）上。该动力传输结构整体结构简单实用，将发动机输出的动力高效的传递至后驱动桥，使车辆能更好的适应越野路面的行驶，还可将发动机安装在车架上与驱动桥分开，减小了簧下质量，提高了驾乘人员的舒适性，提高了卡丁车的动力传输效率，降低了前期大量成本投入和后期维护成本，适用性好，便于推广。

Description

一种适用于全地形卡丁车的新型动力传输结构 技术领域
本发明涉及卡丁车结构，具体是指一种适用于全地形卡丁车的新型动力传输结构。
背景技术
现在所有的卡丁车、全地形车都是将发动机与后悬架安装为一个整体结构式的后驱动桥，但这种驱动方式并不能更好的适应越野里面，同时也不能兼顾驾乘人员的舒适性，造成此种原因是由于上述车辆的体积短小，于是，发动机的安装位置受到了很大局限性，大部分车型将发动机与后悬架驱动桥设计成整体结构，即后悬架摆臂是刚性结构，摆臂下安装驱动桥，摆臂上安装发动机，发动机与后悬架摆臂驱动桥安装固定成刚性的单摆臂结构，才能有效的使用链条来传递发动机至后驱动桥的动力，才能有效的使用减震弹簧，但是这样设计的缺点是，由于后悬架摆臂成整体刚性结构，簧下质量大大增加，悬架在起伏路面的响应性下降，不能有效的减缓来自路面的冲击力，由于后悬架摆臂成整体刚性结构，不能与前轴形成交叉轴的工况，车辆在越野路面行驶时每个轮子的循迹性较差，不能实时贴近路面行驶，降低了动力传递效率。
因此，设计出一种适用于全地形卡丁车的新型动力传输结构势在必行。
发明内容
本发明要解决的技术问题是现有卡丁车结构因其结构设计上的不足，导致动力传递效率低下，增加了前期投入成本和维护成本，不满足目前需要。
为解决上述技术问题，本发明提供的技术方案为：一种适用于全地形卡丁车的新型动力传输结构，包括链轮支撑架一，链轮支撑架一上部设有支撑架上轴承座，下部设有支撑架下轴承座，支撑架上轴承座内通过适配的联轴器及轴承连接有发动机的发动机末端输出轴，发动机末端输出轴上加装有链轮及链条机构一，链轮及链条机构一的链轮加装在链轮轴承座，链轮轴承座下部设有螺栓固定的三角支撑座；
支撑架下轴承座一端通过万向节连接有传动轴，传动轴中部加装有伸缩花键，伸缩花键通过万向节连接支撑架下轴承座内的花键轴实现连接固定；传动轴另一端通过相同的万向节连接有后驱动桥链轮轴承座，后驱动桥链轮轴承座通过链轮支撑架二连接后驱动桥，后驱动桥链轮轴承座上连接有链轮及链条机构二。
本发明与现有技术相比的优点在于：(1)发动机与驱动桥分开安装，发动机可以安装在车架上，减小了驱动桥的簧下质量，提高了驱动桥的回弹响应性与驾乘人员的舒适性；
(2)驱动桥与车架采用平行四连杆与潘哈德连杆柔性连接，驱动桥可以起伏跳动，还可以与前轴形成交叉轴的工况，上述结构再配合本装置结构，使每个车轮与路面有更好的贴合性，同时保证发动机的动力顺利传输至路面；
(3)本结构可配合一体式贯通车架结构，使整车造型更美观；整体结构简单实用，将发动机输出的动力高效的传递至后驱动桥，使车辆能更好的适应越野路面的行驶，还可将发动机安装在车架上与驱动桥分开，减小了簧下质量，提高了驾乘人员的舒适性，大大提高了卡丁车的动力传输效率，降低了前期大量成本投入和后期维护成本，适用性好，便于推广。
作为改进，链轮支撑架一有适合的长度，其上端的支撑架上轴承座安装在发动机末端输出轴上且用螺帽紧固。
作为改进，链轮支撑架一中部安装有链条张紧且链轮支撑架一保持垂直位置，也可以调整至合适的动力传输位置，支撑架下轴承座与链轮支撑架一焊接成直角形，与后驱动桥保持平行状态，支撑架下轴承座安装有轴承、轴、对应链轮和万向节并用螺栓紧固，传动轴两端焊接有万向节，传动轴中部有伸缩花键套，传动轴的一端通过万向节与支撑架下轴承座内的花键轴连接，而另一端也通过万向节与后驱动桥链轮轴承座相连接，且万向轴穿过轴承座在末端安装对应链轮。
作为改进，后驱动桥链轮轴承座通过链轮支撑架二、H型的链轮及链条机构二平行的与后驱动桥的轴管焊接在一起，后驱动桥链轮轴承座与后驱动桥保持一定安装距离，这样安装万向轴末端的链轮及后驱动桥的桥轴上链轮转动时，不发生干涉现象。
作为改进，后驱动桥整体为硬轴结构，驱动硬轴安装在驱动桥管内，在驱动桥管两端的轴承座内安装有轴承用以固定驱动硬轴，在驱动硬轴两端都有花键法兰盘 安装车轮的轮毂，在驱动硬轴两边焊接有法兰盘用来固定大链轮和刹车盘。
作为改进，驱动桥管外分别安装有对应链轮轴承座、轴承座支撑架、刹车泵固定支架、刹车泵、纵向推拉杆座、横向推拉杆座和弹簧安装支架，用来控制驱动桥在运动中的姿态位置。
附图说明
图1是一种适用于全地形卡丁车的新型动力传输结构的组成示意图。
如图所示：1、发动机，2、链轮轴承座，3、链轮及链条机构一，4、支撑架上轴承座，5、发动机末端输出轴，6、链轮支撑架一，7、三角支撑座，8、后驱动桥，9、支撑架下轴承座，10、万向节，11、传动轴，12、伸缩花键，13、后驱动桥链轮轴承座，14、链轮支撑架二，15、链轮及链条机构二。
具体实施方式
下面结合附图对本发明做进一步的详细说明。
本发明在具体实施时，一种适用于全地形卡丁车的新型动力传输结构，包括链轮支撑架一6，其特征在于：所述链轮支撑架一6上部设有支撑架上轴承座4，下部设有支撑架下轴承座9，所述支撑架上轴承座4内通过适配的联轴器及轴承连接有发动机1的发动机末端输出轴5，发动机末端输出轴5上加装有链轮及链条机构一3，所述链轮及链条机构一3的链轮加装在链轮轴承座2，链轮轴承座2下部设有螺栓固定的三角支撑座7；
所述支撑架下轴承座9一端通过万向节10连接有传动轴11，传动轴11中部加装有伸缩花键12，伸缩花键12通过万向节10连接支撑架下轴承座9内的花键轴实现连接固定；所述传动轴11另一端通过相同的万向节10连接有后驱动桥链轮轴承座13，后驱动桥链轮轴承座13通过链轮支撑架二14连接后驱动桥8，所述后驱动桥链轮轴承座13上连接有链轮及链条机构二15。
所述链轮支撑架一6有适合的长度，其上端的支撑架上轴承座4安装在发动机末端输出轴5上且用螺帽紧固。
所述链轮支撑架一6中部安装有链条张紧且链轮支撑架一6保持垂直位置，也可以调整至合适的动力传输位置，支撑架下轴承座9与链轮支撑架一6焊接成 直角形，与后驱动桥8保持平行状态，支撑架下轴承座9安装有轴承、轴、对应链轮和万向节10并用螺栓紧固，传动轴11两端焊接有万向节10，传动轴11中部有伸缩花键套，传动轴11的一端通过万向节10与支撑架下轴承座9内的花键轴连接，而另一端也通过万向节10与后驱动桥链轮轴承座13相连接，且万向轴10穿过轴承座在末端安装对应链轮。
所述后驱动桥链轮轴承座13通过链轮支撑架二14、H型的链轮及链条机构二15平行的与后驱动桥8的轴管焊接在一起，后驱动桥链轮轴承座13与后驱动桥8保持一定安装距离，这样安装万向轴10末端的链轮及后驱动桥8的桥轴上链轮转动时，不发生干涉现象。
所述后驱动桥8整体为硬轴结构，驱动硬轴安装在驱动桥管内，在驱动桥管两端的轴承座内安装有轴承用以固定驱动硬轴，在驱动硬轴两端都有花键法兰盘安装车轮的轮毂，在驱动硬轴两边焊接有法兰盘用来固定大链轮和刹车盘。
所述驱动桥管外分别安装有对应链轮轴承座、轴承座支撑架、刹车泵固定支架、刹车泵、纵向推拉杆座、横向推拉杆座和弹簧安装支架，用来控制驱动桥在运动中的姿态位置。
本发明的工作原理：发动机末端轴输出的动力通过其上面安装的链轮将动力传输至链条上，末端传输轴上同时安装有链条支撑架上端轴承座内的轴承，整个链条支撑架的作用是保持上下两端小链轮的距离，使链条可以平稳的传递动力，末端输出轴上的小链轮轴承座与链条支撑架中间焊接的三角支座用螺栓连接，上述结构可避免链条在传递动力过程中链条支撑架上端轴承损坏。
链条将驱动力传输至链条支撑架下端轴承座上安装的小链轮上，小链轮带动花键轴和万向节及其传动轴同时转动，传动轴中间的伸缩花键可以补偿驱动桥在运动过程中将传动轴拉长或缩短，保证动力的正常传递。
转动的传动轴将动力传输至驱动桥上安装的万向节和小链轮上，小链轮带动链条将动力传递至驱动桥的大链轮上，从而带动驱动硬轴转动同时带动驱动桥两端的车轮同步转动，将动力传输至地面。
当车辆在起伏路面行驶时，发动机与链轮支撑架等相关部件与支架保持相对不动的位置，驱动桥随起伏路面与车身做垂直式或交叉轴动作，传动系统里传动轴伸缩花键和万向节可以补偿各种工况下，传动轴被拉长或压缩的长度变量和角变 量。
本结构采用发动机后置、后桥驱动方式，发动机安装于后桥及车架上部位置，后驱动桥安装于发动机及车架下部位置，将本装置安装于发动机与后桥之间，可有效的传递发动机至后驱动桥的动力，还可以满足后悬架有足够的减震行程，极大缓解冲击力，还可以满足后驱动桥与前桥形成的交叉轴的工况，使每个车轮有良好的循迹性。
小链轮安装在发动机末端输出轴上，且小链轮上安装有轴承座，链条支撑架上下两端都焊接有轴承座，链条支撑座有适合的长度，支撑架上端的轴承座也安装在发动机输出轴上且用螺帽紧固。
链条支撑架中间焊接有三角形支撑座，发动机输出轴链轮上安装的轴承座用螺帽紧固，链轮支撑架中部安装有链条张紧且支撑架保持垂直位置，也可以调整至合适的动力传链条支撑架下端的轴承座与支撑架焊接成直角形，与后驱动桥保持平行状态，支撑架下端轴承座安装有轴承、轴、小链轮和万向节并用螺栓紧固，传动轴两端焊接有万向节，其中部有伸缩花键套，传动轴的一端通过万向节与链条支撑架下端的轴承座内的花键轴连接，而另一端也通过万向节与驱动后桥上的小链轮轴承座相连接，且万向节轴穿过轴承座在末端安装小链轮。
驱动桥上的小链轮轴承座通过H型链轮、支撑架、平行的与驱动轴桥轴管焊接在一起，同时焊接的小链轮轴承座与驱动桥要保持一定距离，这样安装在万向节轴末端的小链轮与安装在驱动桥轴上的大链轮转动时不发生干涉现象。
与本装置配合的驱动桥使整体硬轴结构，驱动桥没有轴间差速器，优点是承载力大，运动部件少，使用寿命长，结构特征是驱动硬轴安装在驱动桥管内，在驱动桥管两端的轴承座内安装有轴承用以固定驱动硬轴，在驱动硬轴两端都有花键法兰盘安装车轮的轮毂，在驱动硬轴两边焊接有法兰盘用来固定大链轮和刹车盘。在驱动桥管外分别安装有小链轮轴承座、轴承座支撑架、刹车泵固定支架、刹车泵、纵向推拉杆座、横向推拉杆座和弹簧安装支架，用来控制驱动桥在运动中的姿态位置。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征，在本发明的描述中，“多 个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。
而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”，“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
在没有脱离本发明构思的情况下，任何显而易见的修改及修饰均应该落入本发明的保护范围内。

Claims (6)

  1. 一种适用于全地形卡丁车的新型动力传输结构，包括链轮支撑架一(6)，其特征在于：所述链轮支撑架一(6)上部设有支撑架上轴承座(4)，下部设有支撑架下轴承座(9)，所述支撑架上轴承座(4)内通过适配的联轴器及轴承连接有发动机(1)的发动机末端输出轴(5)，发动机末端输出轴(5)上加装有链轮及链条机构一(3)，所述链轮及链条机构一(3)的链轮加装在链轮轴承座(2)，链轮轴承座(2)下部设有螺栓固定的三角支撑座(7)；
    所述支撑架下轴承座(9)一端通过万向节(10)连接有传动轴(11)，传动轴(11)中部加装有伸缩花键(12)，伸缩花键(12)通过万向节(10)连接支撑架下轴承座(9)内的花键轴实现连接固定；所述传动轴(11)另一端通过相同的万向节(10)连接有后驱动桥链轮轴承座(13)，后驱动桥链轮轴承座(13)通过链轮支撑架二(14)连接后驱动桥(8)，所述后驱动桥链轮轴承座(13)上连接有链轮及链条机构二(15)。
  2. 根据权利要求1所述的一种适用于全地形卡丁车的新型动力传输结构，其特征在于：所述链轮支撑架一(6)有适合的长度，其上端的支撑架上轴承座(4)安装在发动机末端输出轴(5)上且用螺帽紧固。
  3. 根据权利要求1所述的一种适用于全地形卡丁车的新型动力传输结构，其特征在于：所述链轮支撑架一(6)中部安装有链条张紧且链轮支撑架一(6)保持垂直位置，也可以调整至合适的动力传输位置，支撑架下轴承座(9)与链轮支撑架一(6)焊接成直角形，与后驱动桥(8)保持平行状态，支撑架下轴承座(9)安装有轴承、轴、对应链轮和万向节(10)并用螺栓紧固，传动轴(11)两端焊接有万向节(10)，传动轴(11)中部有伸缩花键套，传动轴(11)的一端通过万向节(10)与支撑架下轴承座(9)内的花键轴连接，而另一端也通过万向节(10)与后驱动桥链轮轴承座(13)相连接，且万向轴(10)穿过轴承座在末端安装对应链轮。
  4. 根据权利要求1所述的一种适用于全地形卡丁车的新型动力传输结构，其特征在于：所述后驱动桥链轮轴承座(13)通过链轮支撑架二(14)、H型的链轮及链条机构二(15)平行的与后驱动桥(8)的轴管焊接在一起，后驱动桥链轮轴承座(13)与后驱动桥(8)保持一定安装距离，这样安装万向轴(10)末端的链轮及后驱动桥(8)的桥轴上链轮转动时，不发生干涉现象。
  5. 根据权利要求1所述的一种适用于全地形卡丁车的新型动力传输结构，其特征在于：所述后驱动桥(8)整体为硬轴结构，驱动硬轴安装在驱动桥管内，在驱动桥管两端的轴承座内安装有轴承用以固定驱动硬轴，在驱动硬轴两端都有花键法兰盘安装车轮的轮毂，在驱动硬轴两边焊接有法兰盘用来固定大链轮和刹车盘。
  6. 根据权利要求5所述的一种适用于全地形卡丁车的新型动力传输结构，其特征在于：所述驱动桥管外分别安装有对应链轮轴承座、轴承座支撑架、刹车泵固定支架、刹车泵、纵向推拉杆座、横向推拉杆座和弹簧安装支架，用来控制驱动桥在运动中的姿态位置。
PCT/CN2021/132814 2020-12-16 2021-11-24 一种适用于全地形卡丁车的新型动力传输结构 WO2022127542A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023600055U JP3245177U (ja) 2020-12-16 2021-11-24 全地形対応型ゴーカートに適用できる新規動力伝達構造
US17/799,906 US20230066500A1 (en) 2020-12-16 2021-11-24 A novel power transmission structure suitable for all-terrain karts
EP21905471.5A EP4265457A1 (en) 2020-12-16 2021-11-24 Novel power transmission structure applicable to all-terrain go-kart

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202023035981.3 2020-12-16
CN202023035981 2020-12-16

Publications (1)

Publication Number Publication Date
WO2022127542A1 true WO2022127542A1 (zh) 2022-06-23

Family

ID=79152697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/132814 WO2022127542A1 (zh) 2020-12-16 2021-11-24 一种适用于全地形卡丁车的新型动力传输结构

Country Status (5)

Country Link
US (1) US20230066500A1 (zh)
EP (1) EP4265457A1 (zh)
JP (1) JP3245177U (zh)
CN (1) CN215042074U (zh)
WO (1) WO2022127542A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215042074U (zh) * 2020-12-16 2021-12-07 马亮 一种适用于全地形卡丁车的新型动力传输结构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286619B1 (en) * 1999-02-15 2001-09-11 Yamaha Hatsudoki Kabushiki Kaisha ATV transmission
CN102452276A (zh) * 2010-10-22 2012-05-16 现代农装科技股份有限公司 一种可调轮距的驱动桥
CN203921087U (zh) * 2014-03-28 2014-11-05 天津欧绅机电科技有限公司 越野卡丁车工字型后摆悬挂结构
CN104827899A (zh) * 2015-04-15 2015-08-12 昆明理工大学 一种太阳能电动车的链传动系统
CN108116575A (zh) * 2017-12-05 2018-06-05 徐州德高电动车科技有限公司 一种电动三轮车传动机构
CN210047275U (zh) * 2019-05-22 2020-02-11 潍坊巨沃世昌农业装备有限公司 一种车桥
CN112829579A (zh) * 2020-12-16 2021-05-25 马亮 一种适用于全地形卡丁车的新型动力传输结构
CN215042074U (zh) * 2020-12-16 2021-12-07 马亮 一种适用于全地形卡丁车的新型动力传输结构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US627503A (en) * 1899-02-09 1899-06-27 Frank H Afford Motor-vehicle.
US967698A (en) * 1909-06-04 1910-08-16 Horace E Wray Running-gear for motor-vehicles.
US1059147A (en) * 1910-04-14 1913-04-15 Morton Adrian Graley Traction-wheel and means for driving same.
TWI278165B (en) * 2002-06-06 2007-04-01 Sunyen Co Ltd Single body motor/generator dual function device
DE60214564T2 (de) * 2002-10-30 2007-06-06 Renault S.A. Lagergehäuse
US20190184822A1 (en) * 2017-12-18 2019-06-20 Arctic Cat Inc. Drive Configuration for Vehicle
CN207652970U (zh) * 2017-12-22 2018-07-27 高慧盼 机载施肥器用传动装置
US11319023B2 (en) * 2019-10-30 2022-05-03 Marc Gregory Martino Reverse trike suspension and drivetrain improvements
CA3105667A1 (en) * 2020-01-15 2021-07-15 Polaris Industries Inc. Powertrain for a utility vehicle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286619B1 (en) * 1999-02-15 2001-09-11 Yamaha Hatsudoki Kabushiki Kaisha ATV transmission
CN102452276A (zh) * 2010-10-22 2012-05-16 现代农装科技股份有限公司 一种可调轮距的驱动桥
CN203921087U (zh) * 2014-03-28 2014-11-05 天津欧绅机电科技有限公司 越野卡丁车工字型后摆悬挂结构
CN104827899A (zh) * 2015-04-15 2015-08-12 昆明理工大学 一种太阳能电动车的链传动系统
CN108116575A (zh) * 2017-12-05 2018-06-05 徐州德高电动车科技有限公司 一种电动三轮车传动机构
CN210047275U (zh) * 2019-05-22 2020-02-11 潍坊巨沃世昌农业装备有限公司 一种车桥
CN112829579A (zh) * 2020-12-16 2021-05-25 马亮 一种适用于全地形卡丁车的新型动力传输结构
CN215042074U (zh) * 2020-12-16 2021-12-07 马亮 一种适用于全地形卡丁车的新型动力传输结构

Also Published As

Publication number Publication date
CN215042074U (zh) 2021-12-07
US20230066500A1 (en) 2023-03-02
JP3245177U (ja) 2024-01-09
EP4265457A1 (en) 2023-10-25

Similar Documents

Publication Publication Date Title
US1744168A (en) Assighob
CN112829579A (zh) 一种适用于全地形卡丁车的新型动力传输结构
WO2023020147A1 (zh) 一种传动系统
KR20120020748A (ko) 차량의 엔진마운팅 구조
CN201198319Y (zh) 高速轻量化无摇枕转向架
WO2022127542A1 (zh) 一种适用于全地形卡丁车的新型动力传输结构
US7703789B1 (en) Load coupling apparatus for wheeled vehicle
EP2917052A1 (en) Independent rear suspension with lifting device
US7980350B2 (en) Chassis mounted electric, independent, steering axle of a vehicle
CA2121181C (en) Improvements in independent suspensions
US3191711A (en) Traction system for automotive devices utilizing reaction torque to improve traction
CN210416093U (zh) 一整体式管梁车桥装置
WO2014101257A1 (zh) 驱动桥用独立悬架结构
US20160368359A1 (en) An arrangement for packaging an engine of a vehicle
CN200984953Y (zh) 半独立悬架
CN111186269A (zh) 一种一体化对称支撑单摆臂悬架轮边电驱动系统
CN219007591U (zh) 一种包含传动系统的全地形卡丁车的动力传动机构
CN219192463U (zh) 一种四轮滑板车后悬架的拖拽臂结构
CN217374495U (zh) 一种转向架及轨道车辆
CN217347392U (zh) 一种可线控独立悬架分布式电驱装置
CN113968255B (zh) 转向架及轨道车辆
CN2732532Y (zh) 三轮摩托车全减震后桥
GB775086A (en) Improvements in or relating to engine-driven vehicles
EP1566158A2 (en) Small-sized electric vehicle
JP3204896B2 (ja) フルクローラ型車両及びその組立て方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21905471

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023600055

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021905471

Country of ref document: EP

Effective date: 20230717