阅读说明：本技术 一种变矩器涡轮毂与从动盘的密封装置 (Sealing device for vortex hub and driven disc of torque converter ) 是由 丁世浩 钱啟德 陈宁 王宏卫 王涛 张溥 冯涛 冯琦 张超 杨冰 王文静 王晓 于 2019-11-19 设计创作，主要内容包括：本发明涉及一种变矩器涡轮毂与从动盘的密封装置,解决现有变矩器涡轮毂与从动盘的密封方式使得涡轮毂的结构比较复杂,从而导致变矩器的成本高昂、装配复杂的问题。该变矩器涡轮毂与从动盘的密封装置包括从动盘、输入轴、涡轮毂；输入轴为台阶轴,包括大端和小端；从动盘的中部固定设置有开口套筒,开口套筒套装在输入轴的小端,且输入轴小端与开口套筒之间设置有密封环,密封环安装在输入轴的密封槽内；涡轮毂的截面为L形结构,其包括固定连接的横向套筒和竖向环形板；横向套筒套装在输入轴的大端,且与输入轴同时转动,竖向环形板与变矩器的拨盘固定连接。(The invention relates to a sealing device for a vortex hub and a driven disc of a torque converter, which solves the problems of high cost and complex assembly of the torque converter caused by the complex structure of the vortex hub due to the sealing mode of the vortex hub and the driven disc of the conventional torque converter. The sealing device for the vortex hub and the driven disc of the torque converter comprises a driven disc, an input shaft and a vortex hub; the input shaft is a step shaft and comprises a large end and a small end; an opening sleeve is fixedly arranged in the middle of the driven disc, the opening sleeve is sleeved at the small end of the input shaft, a sealing ring is arranged between the small end of the input shaft and the opening sleeve, and the sealing ring is arranged in a sealing groove of the input shaft; the cross section of the turbine hub is of an L-shaped structure and comprises a transverse sleeve and a vertical annular plate which are fixedly connected; the horizontal sleeve is sleeved at the large end of the input shaft and rotates with the input shaft simultaneously, and the vertical annular plate is fixedly connected with a driving plate of the torque converter.)

1. The utility model provides a torque converter whirlpool wheel hub and driven plate's sealing device which characterized in that: comprises a driven disc (2), an input shaft (1) and a turbine hub (7);

the input shaft (1) is a step shaft and comprises a large end and a small end;

an opening sleeve (11) is fixedly arranged in the middle of the driven disc (2), the opening sleeve (11) is sleeved on the small end of the input shaft (1), a sealing ring (10) is arranged between the small end of the input shaft (1) and the opening sleeve (11), and the sealing ring (10) is arranged in a sealing groove of the input shaft (1);

the cross section of the turbine hub (7) is of an L-shaped structure and comprises a transverse sleeve (12) and a vertical annular plate (13) which are fixedly connected; horizontal sleeve (12) suit is in the main aspects of input shaft (1), and rotates simultaneously with input shaft (1), vertical annular plate (13) and driver plate (8) fixed connection of torque converter.

2. The torque converter turbine hub to driven disk seal of claim 1, wherein: and a friction plate (9) is arranged on the outer side of the driven plate (2).

3. The torque converter turbine hub to driven disk seal of claim 2, wherein: the turbine hub (7) is connected with the input shaft (1) through a spline.

4. The torque converter turbine hub to driven disk seal of claim 2, wherein: the turbine hub (7) is connected with the input shaft (1) in an interference fit mode.

5. The sealing device of a turbine hub and a driven plate of a torque converter according to any one of claims 1 to 4, characterized in that: the turbine hub (7) is a component realized by a stamping process.

6. The torque converter turbine hub to driven disk seal of claim 5, wherein: the vertical annular plate (13) is connected with the drive plate (8) through a second rivet (6).

Technical Field

The invention relates to a torque converter, in particular to a sealing device for a turbine hub and a driven disc of the torque converter.

Background

In a construction machine, a power source can output at a certain rotating speed, and a transmission mechanism matched with the power source can generate the situation that an output shaft is broken due to the sudden increase of input torque, so that an efficient torsion torque conversion device is necessary. The conventional torque conversion device is generally installed between a power source and a transmission case, and combines the coupling transmissibility of fluid and blades to effectively transmit the driving force of the power source to the transmission case, and the fluid torque conversion device is also called a torque converter. In current torque converter, its middle seal structure is comparatively complicated, and its core lies in realizing the sealed of whirlpool wheel hub, input shaft and driven plate through whirlpool wheel hub's multichannel sealing washer, and this kind of sealed mode makes whirlpool wheel hub's structure more complicated, and whirlpool wheel hub's manufacturing and shaping must be realized through the casting, and subsequent middle shaft hole processing requires highly, makes whirlpool wheel hub's manufacturing procedure comparatively complicated and loaded down with trivial details. Therefore, the sealing method not only makes the structure of the turbine hub complex and expensive, but also makes the assembly process complex and the maintenance difficult, and finally makes the production cost relatively high.

Disclosure of Invention

The invention aims to solve the problems of high cost and complex assembly of a torque converter caused by the complex structure of a turbine hub due to the sealing mode of the turbine hub and a driven disc of the conventional torque converter, and provides a sealing device for the turbine hub and the driven disc of the torque converter. The sealing device has the advantages of low manufacturing cost, simple structure, low requirement on environment, good sealing effect and the like.

The purpose of the invention is realized by the following technical scheme:

a sealing device for a turbine hub and a driven disc of a torque converter comprises the driven disc, an input shaft and the turbine hub; the input shaft is a step shaft and comprises a large end and a small end; an opening sleeve is fixedly arranged in the middle of the driven disc, the opening sleeve is sleeved at the small end of the input shaft, a sealing ring is arranged between the small end of the input shaft and the opening sleeve, and the sealing ring is arranged in a sealing groove of the input shaft; the cross section of the turbine hub is of an L-shaped structure and comprises a transverse sleeve and a vertical annular plate which are fixedly connected; the horizontal sleeve is sleeved at the large end of the input shaft and rotates with the input shaft simultaneously, and the vertical annular plate is fixedly connected with a driving plate of the torque converter.

Further, a friction plate is arranged on the outer side of the driven plate.

Further, the turbine hub and the input shaft are connected through a spline.

Further, the turbine hub is connected with the input shaft in an interference fit mode.

Further, the turbine hub is a component realized by a stamping process.

Further, the vertical annular plate and the dial are connected by a second rivet.

Compared with the prior art, the invention has the following beneficial effects:

1. the sealing device for the turbine hub and the driven disc of the torque converter provided by the invention changes the structure of the driven disc and the turbine hub, and the sealing ring is arranged between the input shaft and the opening sleeve, so that the torque converter is ensured to have better sealing property, and meanwhile, the processing and manufacturing mode of the turbine hub is changed, further the product cost is reduced, and the sealing device has important influence on subsequent related process improvement and product performance improvement.

2. The sealing device for the vortex hub and the driven disc of the torque converter provided by the invention changes the original sealing mode, has a simpler structure compared with the traditional torque converter, avoids the existing mode of sealing the vortex hub, the input shaft and the driven disc by a plurality of sealing rings of the vortex hub, and has the characteristics of simple structure, simple assembly, low manufacturing cost, good transmission effect and the like.

Drawings

FIG. 1 is a schematic view of a sealing device for a turbine hub and a driven plate of a torque converter according to the present invention.

Reference numerals: 1-input shaft, 2-driven plate, 3-first rivet, 4-spring, 5-retainer, 6-second rivet, 7-vortex hub, 8-drive plate, 9-friction plate, 10-sealing ring, 11-opening sleeve, 12-transverse sleeve and 13-vertical annular plate.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments.

The invention provides a sealing device for a turbine hub and a driven disc of a torque converter, which can realize sealing only by arranging a sealing ring 10 on the driven disc and an input shaft, and ensure that the middle position of the torque converter is oil-tight.

As shown in FIG. 1, the sealing device for the turbine hub and the driven disk of the torque converter provided by the invention comprises a driven disk 2, an input shaft 1 and a turbine hub 7, wherein the input shaft 1 is a stepped shaft and comprises a large end and a small end.

An opening sleeve 11 is fixedly arranged in the middle of the driven disc 2, the opening sleeve 11 can be integrally arranged with the driven disc 2 or can be separately arranged, and the driven disc can be connected in a flange or welding mode and the like when the opening sleeve 11 is separately arranged. The split sleeve 11 is sleeved at the small end of the input shaft 1, a sealing ring 10 is arranged between the input shaft 1 and the split sleeve 11, the sealing ring 10 is installed in a sealing groove of the input shaft 1, and the split sleeve 11 does not rotate along with the input shaft 1 and only plays a role in positioning.

The cross section of the turbine hub 7 is of an L-shaped structure and comprises a transverse sleeve 12 and a vertical annular plate 13 which are fixedly connected; horizontal sleeve 12 suit is in the main aspects of input shaft 1, and rotates simultaneously with input shaft 1, and vertical annular plate 13 realizes fixed connection through first rivet 3 with driver plate 8. The turbine hub 7 and the input shaft 1 can be connected through splines and can also be connected through interference fit. The vertical annular plate 13 is arranged in contact with a radial surface of the driven disk 2. The turbine hub 7 does not need to be provided with a sealing groove, so that the turbine hub is simple in structure and convenient to manufacture, can be realized by a stamping process, can also be realized by forging or casting and the like, and finally improves the benefit and performance of a product.

In the sealing device of the turbine hub and the driven disc of the torque converter, the middle of the driven disc 2 is provided with an opening extending out of a shaft cylinder (an opening sleeve 11), and the sealing of the driven disc 2 is realized by matching with a sealing ring 10 of a stepped section of an input shaft 1. A friction plate 9 is bonded on the outer side of the driven plate 2, and an outer cover wheel shell of the torque converter is in friction contact with the driven plate 2 through the friction plate 9; the driven disc 2 is connected with a fixed retainer 5 through a first rivet 3; a plurality of groups of corresponding springs 4 are annularly distributed and clamped in the groove on the periphery of the retainer 5; the convex part at the tail end of the drive plate 8 is inserted into the concave part of the retainer 5 and is contacted with the two ends of the spring 4 in the groove; the middle position of the drive plate 8 is riveted with the outer edge of the turbine hub 7 through a second rivet 6; an inner groove is formed at the shaft end of the input shaft 1, and the sealing ring 10 is embedded in the groove. The spring 4, the rivet hole of the driven plate 2 and the rivet hole of the turbine hub 7 are distributed at the edge position of the corresponding plate part structure in equal quantity around the central axis of the input shaft 1.

The sealing device for the turbine hub and the driven disc of the torque converter has the advantages that the sealing mode of the driven disc 2 and the input shaft 1 is changed, the number of the original sealing rings 10 is reduced on the basis of ensuring better sealing performance of products, the processing and manufacturing mode of the turbine hub 7 is optimized, the product cost is further reduced, and the sealing device has important influences on subsequent related process improvement and product performance improvement.