WO2013056538A1 - 一种自动变速器用齿轮传动装置 - Google Patents

一种自动变速器用齿轮传动装置 Download PDF

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Publication number
WO2013056538A1
WO2013056538A1 PCT/CN2012/074054 CN2012074054W WO2013056538A1 WO 2013056538 A1 WO2013056538 A1 WO 2013056538A1 CN 2012074054 W CN2012074054 W CN 2012074054W WO 2013056538 A1 WO2013056538 A1 WO 2013056538A1
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Prior art keywords
gear
clutch
piston
automatic transmission
shaft
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PCT/CN2012/074054
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English (en)
French (fr)
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刘祥伍
魏文书
苏成云
刘肖
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盛瑞传动股份有限公司
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Publication of WO2013056538A1 publication Critical patent/WO2013056538A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00Fluid-actuated clutches
    • F16D25/06Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms
    • F16H63/3023Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
    • F16H63/3026Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes

Definitions

  • the invention relates to a gear transmission device for an automatic transmission, belonging to the technical field of gear transmission.
  • gears and clutches are indispensable components.
  • the gears are usually disc-shaped and consist of an integral ring gear and a toothed rack.
  • the clutch is composed of a piston, a balance piston, a steel plate, a friction plate, and an outer hub of the clutch.
  • the inner hub of the clutch and the return spring are formed; in order to control the movement of the clutch, a plurality of independent control oil passages are required to be disposed on the associated shaft.
  • the working principle of the clutch is to push the piston to press the friction plate and the steel piece under the action of the pressure oil, so that the friction plate and the steel piece are integrated, and the outer hub of the clutch and the inner hub of the clutch are synchronously moved.
  • the piston is returned by the action of the return spring, and the friction plate and the steel piece are separated by the centrifugal force, so that they are independent of each other and do not transmit power.
  • the gears and the clutches need to be independently designed and completely independent of each other.
  • the transmission of the gears can be achieved, since the gears and the clutches are independent of each other, the gearbox is made
  • the space cannot be fully utilized, resulting in a large volume of the gearbox, which makes it difficult to match the vehicle, which reduces the number of models that can be matched; and the gears and clutches are individually designed to increase the number of parts and components. Management and processing costs.
  • the technical problem to be solved by the present invention is to provide a compact and low-cost gear transmission for an automatic transmission in view of the above deficiencies.
  • a gear transmission for an automatic transmission including a gear and a clutch
  • the gear includes a ring gear and a tooth groove
  • the clutch includes a piston, a balance piston, a steel sheet, a friction plate, and a clutch.
  • the hub, the inner hub of the clutch, the return spring and the connecting disc are characterized in that the gear and the clutch are fixedly connected in a unitary structure.
  • the inner side of the toothed rack is provided with a gear shaft, and the tooth width and the gear shaft are integrated; the piston of the clutch, the balance piston, the return spring and the connecting plate are sleeved on the gear shaft.
  • the outer hub of the clutch is fixedly coupled to the ring gear.
  • the inner side of the toothed rack is provided with an annular cavity, and the annular cavity accommodates a piston and a balance piston, and the piston forms a sealed pressure oil chamber with the tooth width and the gear shaft.
  • the piston of the clutch, the balance piston and the gear shaft form a sealed balanced oil chamber.
  • the gear is provided with an axial support shaft bore.
  • a pressure oil passage is arranged on the gear shaft, and the pressure oil passage communicates with the support shaft hole and the pressure oil chamber.
  • a balance oil passage is arranged on the gear shaft, and the balance oil passage communicates with the support shaft hole and the balance oil chamber.
  • a lubricating oil passage is arranged on the gear shaft, and a lubrication chamber formed by the balance piston, the connecting plate, the gear shaft and the outer hub of the clutch communicates with the lubricating oil passage.
  • the pistons are axially and sealingly connected to the gear shaft and the tooth width, respectively.
  • the outer edge of the toothed rack is provided with a support ring, and the inner wall of the support ring is sealingly connected to the outer ring of the piston.
  • the balance pistons are axially sealed and connected to the gear shaft and the piston, and the gear shaft is provided with a snap spring.
  • a bearing is disposed between the connecting plate and the gear shaft.
  • the invention adopts the above technical solution, and has the following advantages compared with the prior art: the gear and the clutch in the automatic transmission are integrated, and the spokes of the gear are realized as a part of the clutch pressure oil chamber, and the space of the gearbox is obtained. Effective compression reduces the size of the gearbox; gears and clutches do not need to be designed separately, reducing the number of parts, saving material and reducing costs.
  • FIG. 1 is a schematic structural view of a gear transmission device according to an embodiment of the present invention.
  • a gear transmission for an automatic transmission includes a gear and a clutch that are fixedly coupled as a unitary structure;
  • the clutch includes a piston 4, a balance piston 5, a steel sheet 7, a friction plate 8, and a clutch outer hub 9 , the inner hub 11 of the clutch, the return spring 25 and the connecting disc 15;
  • the gear comprises a ring gear 1 and a toothed rack 2;
  • the inner side of the toothed rack 2 is provided with a gear shaft 23, and the center of the gear is provided with an axial support shaft hole 22, and the support shaft hole 22 is provided with a first support shaft bearing 3 and a second support shaft bearing 16 for mounting the support shaft. ;
  • the tooth width 2 and the gear shaft 23 are of an integral structure, and after the respective structures of the ring gear 1 and the toothed rack 2 are respectively processed, the ring gear 1 and the toothed frame 2 are welded together.
  • the inner side of the toothed rack 2 is provided with an annular cavity 24, the annular cavity 24 accommodating the piston 4, the return spring 25 and the balance piston 5, the piston 4 and the toothed frame 2, the gear shaft 23 forming a sealed pressure oil chamber 18, the piston 4
  • the inner ring is sealingly connected to the outer wall of the gear shaft 23, and the outer edge of the toothed frame 2 is provided with a support ring 26 for supporting the axial movement of the piston 4, and the outer ring of the piston 4 is sealingly connected to the inner wall of the support ring 26.
  • the piston 4 of the clutch, the return spring 25, the balance piston 5 and the lands 15 are sleeved on the gear shaft 23; the piston 4 of the clutch, the balance piston 5 and the gear shaft 23 form a sealed balance oil chamber 21, and the return spring 25 is disposed at Balancing between the piston 5 and the piston 4 and fixedly connected to the piston 4;
  • the inner ring of the balance piston 5 has a small clearance fit with the outer wall of the gear shaft 23.
  • the outer ring of the balance piston 5 is sealingly connected with the outer ring of the piston 4.
  • the lip seal 6 is provided between the balance piston 5 and the piston 4, which can block the balance clutch. a leakage of oil generated by the centrifugal force generated by the pressure oil when rotating; the gear shaft 23 is provided with a retaining spring 13 for blocking the axial movement of the balance piston 5;
  • the outer hub 9 of the clutch is fixedly connected to the ring gear 1 of the gear as an integral structure, the steel plate 7 is fixedly connected with the outer hub 9 of the clutch, and the friction plate 8 is fixedly connected with the inner hub 11 of the clutch;
  • a bearing 14 is disposed between the inner ring of the connecting plate 15 and the gear shaft 23, and a retaining spring 12 is disposed between the connecting plate 15 and the gear shaft 23, and the retaining spring 12 is used to block the axial movement of the bearing 14;
  • the gear shaft 23 is provided with a pressure oil passage 17 which communicates with the support shaft hole 22 and the pressure oil chamber 18; the gear shaft 23 is provided with a balance oil passage 19, and the balance oil passage 19 communicates with the support shaft hole 22 and the balance oil chamber 21.
  • the pressure oil enters the balance oil chamber 21 through the balance oil passage 19, and can balance the centrifugal force generated by the pressure oil when the clutch rotates, thereby avoiding the side effects caused by the centrifugal force.
  • the gear shaft 23 is provided with a lubricating oil passage 20, and the lubrication chamber 10 formed by the balance piston 5, the connecting plate 15, the gear shaft 23 and the clutch outer hub 9 communicates with the lubricating oil passage 20, so that the lubricating oil can better lubricate the clutch.
  • the pressure oil enters the pressure oil chamber 18 through the pressure oil passage 17, and pushes the piston 4 to press the friction plate 8 and the steel sheet 7, from the connecting plate 15, the clutch inner hub 11, the friction plate 8, the steel plate 7, and the clutch.
  • the spokes of the gear are realized as part of the clutch oil chamber, and the clutch and the gear are integrated, so that the gear and the clutch are no longer designed separately, the design of the parts is reduced, the space is effectively compressed, the material is saved, and the cost is reduced. .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Details Of Gearings (AREA)
  • Structure Of Transmissions (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

一种自动变速器用齿轮传动装置,包括齿轮和离合器。齿轮包括齿圈(1)和齿幅(2)。离合器包括活塞(4)、平衡活塞(5)、钢片(7)、摩擦片(8)、离合器外毂(9)、离合器内毂(11)、回位弹簧(25)和连接盘(15)。齿轮和离合器固定连接为一体结构。齿幅(2)的内侧设有齿轮轴(23),齿幅(2)和齿轮轴(23)为一体结构。离合器的活塞(4)、平衡活塞(5)、回位弹簧(25)和连接盘(15)套装在齿轮轴(23)上,将多挡自动变速箱中的齿轮和离合器合为一体,使齿轮的齿幅(2)作为离合器压力油腔(18)的一部分。变速箱的空间可被充分利用,并且变速箱的体积减小了。由于齿轮和离合器不需要单独设计,因此减少了零部件的数量,节省了材料,降低了成本。

Description

一种自动变速器用齿轮传动装置 一种自动变速器用齿轮传动装置
技术领域
本发明涉及一种自动变速器用齿轮传动装置,属于齿轮传动技术领域。
背景技术
在多挡自动变速器中,齿轮和离合器是不可缺少的器件,齿轮通常为圆盘状,由一体的齿圈和齿幅构成;离合器由活塞、平衡活塞、钢片、摩擦片、离合器外毂、离合器内毂和回位弹簧构成;为了控制离合器的动作,还需要在相关的轴上设置多条相互独立的控制油路。
离合器的工作原理是在压力油的作用下,推动活塞压紧摩擦片和钢片,使摩擦片和钢片成为一体,实现离合器外毂和离合器内毂同步运动,当没有压力油的作用时,活塞在回位弹簧的作用下回位,摩擦片和钢片在离心力的作用下分离,使其相互独立,不传递动力。
目前,传统的多挡自动变速箱中,齿轮和离合器需要进行独立设计,并且相互之间是完全独立的,虽然能够实现齿轮的传动作用,但由于齿轮和离合器是相互独立的,造成使变速箱的空间不能得到充分利用,导致变速箱的体积变大,与整车匹配的时候造成一定的困难,使其能够匹配的车型减少;并且齿轮和离合器单独设计使其零部件增多,增加了零部件的管理和加工成本。
发明内容
本发明要解决的技术问题是针对以上不足,提供一种结构紧凑、成本低的自动变速器用齿轮传动装置。
为解决上述的问题,本发明采用以下技术方案:一种自动变速器用齿轮传动装置,包括齿轮和离合器,齿轮包括齿圈和齿幅,离合器包括活塞、平衡活塞、钢片、摩擦片、离合器外毂、离合器内毂、回位弹簧和连接盘,其特征在于:所述齿轮和离合器固定连接为一体结构。
作为上述技术方案的进一步改进:
所述齿幅的内侧设有齿轮轴,齿幅和齿轮轴为一体结构;离合器的活塞、平衡活塞、回位弹簧和连接盘套装在齿轮轴上。
所述离合器外毂与齿圈固定连接。
所述齿幅的内侧设有环形空腔,环形空腔容纳活塞和平衡活塞,活塞与齿幅、齿轮轴形成密封的压力油腔。
所述离合器的活塞、平衡活塞和齿轮轴形成密封的平衡油腔。
所述齿轮设有轴向的支撑轴孔。
所述齿轮轴上设有压力油道,压力油道连通支撑轴孔和压力油腔。
所述齿轮轴上设有平衡油道,平衡油道连通支撑轴孔和平衡油腔。
所述齿轮轴上设有润滑油道,平衡活塞、连接盘、齿轮轴和离合器外毂形成的润滑腔室与润滑油道连通。
所述活塞分别与齿轮轴、齿幅轴向密封连接。
所述齿幅的外缘设有支撑环,支撑环的内壁与活塞的外环密封连接。
所述平衡活塞分别与齿轮轴、活塞轴向密封连接,齿轮轴上设有卡簧。
所述连接盘与齿轮轴之间设有轴承。
本发明采取以上技术方案,与现有技术相比,具有以下优点:将自动变速箱中的齿轮和离合器合为一体,实现了齿轮的轮辐作为离合器压力油腔的一部分,变速箱的空间得到了有效地压缩,减小了变速箱的体积;齿轮和离合器不需要单独设计,减少了零部件的数量,节省了材料,降低了成本。
下面结合附图和实施对本发明作进一步说明。
附图说明
附图1为本发明实施例中齿轮传动装置的结构示意图;
图中,
1-齿圈,2-齿幅,3-第一支撑轴轴承,4-活塞,5-平衡活塞,6-唇形密封,7-钢片,8-摩擦片,9-离合器外毂,10-润滑腔室,11-离合器内毂,12-卡簧,13-卡簧,14-轴承,15-连接盘,16-第二支撑轴轴承,17-压力油道,18-压力油腔,19-平衡油道,20-润滑油道,21-平衡油腔,22-支撑轴孔,23-齿轮轴,24-环形空腔,25-回位弹簧,26-支撑环。
具体实施方式
实施例,如图1所示,一种自动变速器用齿轮传动装置,包括固定连接为一体结构的齿轮和离合器;离合器包括活塞4、平衡活塞5、钢片7、摩擦片8、离合器外毂9、离合器内毂11、回位弹簧25和连接盘15;齿轮包括齿圈1和齿幅2;
齿幅2的内侧设有齿轮轴23,齿轮的中心位置设有轴向的支撑轴孔22,支撑轴孔22内设有用来安装支撑轴的第一支撑轴轴承3和第二支撑轴轴承16;
齿幅2和齿轮轴23为一体结构,分别加工出齿圈1和齿幅2的个部分结构以后,再将齿圈1和齿幅2焊接为一体。
齿幅2的内侧设有环形空腔24,环形空腔24容纳活塞4、回位弹簧25和平衡活塞5,活塞4与齿幅2、齿轮轴23形成密封的压力油腔18,活塞4的内环与齿轮轴23的外壁密封连接,齿幅2的外缘设有用来支撑活塞4作轴向运动的支撑环26,活塞4的外环与支撑环26的内壁密封连接。
离合器的活塞4、回位弹簧25、平衡活塞5和连接盘15套在齿轮轴23上;离合器的活塞4、平衡活塞5和齿轮轴23形成密封的平衡油腔21,回位弹簧25设置在平衡活塞5与活塞4之间并与活塞4固定连接;
平衡活塞5的内环与齿轮轴23的外壁小间隙配合,平衡活塞5的外环与活塞4的外环密封连接,平衡活塞5与活塞4之间设有唇形密封6,能够阻止平衡离合器转动时压力油产生的离心力的油的泄露;齿轮轴23上设有阻挡平衡活塞5作轴向移动的卡簧13;
离合器外毂9与齿轮的齿圈1固定连接为一体结构,钢片7与离合器外毂9固定连接,摩擦片8与离合器内毂11固定连接;
连接盘15的内环与齿轮轴23之间设有轴承14,连接盘15与齿轮轴23之间设有卡簧12,卡簧12用来阻挡轴承14作轴向移动;
齿轮轴23上设有压力油道17,压力油道17连通支撑轴孔22和压力油腔18;齿轮轴23上设有平衡油道19,平衡油道19连通支撑轴孔22和平衡油腔21,压力油经平衡油道19进入平衡油腔21,可以平衡离合器转动时压力油产生的离心力,避免了离心力产生的副作用。
齿轮轴23上设有润滑油道20,平衡活塞5、连接盘15、齿轮轴23和离合器外毂9形成的润滑腔室10与润滑油道20连通,使润滑油能够更好的润滑离合器的摩擦片8和钢片7。
当离合器工作时压力油经压力油道17进入压力油腔18,推动活塞4压紧摩擦片8和钢片7,自连接盘15、离合器内毂11、摩擦片8、钢片7、离合器外毂9至齿圈1实现动力的传动;
实现了齿轮的轮辐作为离合器油腔的一部分,离合器和齿轮合为一体,使其齿轮和离合器不再单独设计,减少了零部件的设计,空间得到了有效地压缩,节省了材料,降低了成本。

Claims (13)

  1. 一种自动变速器用齿轮传动装置,包括齿轮和离合器,齿轮包括齿圈(1)和齿幅(2),离合器包括活塞(4)、平衡活塞(5)、钢片(7)、摩擦片(8)、离合器外毂(9)、离合器内毂(11)、回位弹簧(25)和连接盘(15),其特征在于:所述齿轮和离合器固定连接为一体结构。
  2. 如权利要求1所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿幅(2)的内侧设有齿轮轴(23),齿幅(2)和齿轮轴(23)为一体结构;离合器的活塞(4)、平衡活塞(5)、回位弹簧(25)和连接盘(15)套装在齿轮轴(23)上。
  3. 如权利要求2所述的一种自动变速器用齿轮传动装置,其特征在于:所述离合器外毂(9)与齿圈(1)固定连接。
  4. 如权利要求3所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿幅(2)的内侧设有环形空腔(24),环形空腔(24)容纳活塞(4)和平衡活塞(5),活塞(4)与齿幅(2)、齿轮轴(23)形成密封的压力油腔(18)。
  5. 如权利要求4所述的一种自动变速器用齿轮传动装置,其特征在于:所述离合器的活塞(4)、平衡活塞(5)和齿轮轴(23)形成密封的平衡油腔(21)。
  6. 如权利要求5所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿轮上设有轴向的支撑轴孔(22)。
  7. 如权利要求6所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿轮轴(23)上设有压力油道(17),压力油道(17)连通支撑轴孔(22)和压力油腔(18)。
  8. 如权利要求6所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿轮轴(23)上设有平衡油道(19),平衡油道(19)连通支撑轴孔(22)和平衡油腔(21)。
  9. 如权利要求6所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿轮轴(23)上设有润滑油道(20),平衡活塞(5)、连接盘(15)、齿轮轴(23)和离合器外毂(9)形成的润滑腔室(10)与润滑油道(20)连通。
  10. 如权利要求2-9其中之一所述一种自动变速器用齿轮传动装置,其特征在于:所述活塞(4)分别与齿轮轴(23)、齿幅(2)轴向密封连接。
  11. 如权利要求10所述的一种自动变速器用齿轮传动装置,其特征在于:所述齿幅(2)的外缘设有支撑环(26),支撑环(26)的内壁与活塞(4)的外环密封连接。
  12. 如权利要求2-9其中之一所述的一种自动变速器用齿轮传动装置,其特征在于:所述平衡活塞(5)分别与齿轮轴(23)、活塞(4)轴向密封连接,齿轮轴(23)上设有卡簧(13)。
  13. 如权利要求2-9其中之一所述的一种自动变速器用齿轮传动装置,其特征在于:所述连接盘(15)与齿轮轴(23)之间设有轴承(14)。
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