KR100854115B1 - Torque converter for vehicle - Google Patents

Abstract

The present invention discloses a torque converter for a vehicle that can be easily manufactured and can increase design freedom. The vehicle torque converter of the present invention includes a front cover, an impeller coupled to the front cover to rotate together, a turbine disposed at a position facing the impeller, a reactor positioned between the impeller and the turbine to change the flow of oil from the turbine to the impeller side, It includes a lockup clutch, a lockup clutch, or a tonic damper coupled to the turbine to absorb the shock acting in the circumferential direction. The reactors are arranged so that the two overlap each other.

Torque Converters, Reactors, Blades

Description

Torque converter for vehicle

1 is a cross-sectional view of a torque converter for explaining an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a reactor, which is a main part of FIG. 1.

3 is an exploded perspective view of FIG. 2.

The present invention relates to a vehicle torque converter, and more particularly to a vehicle torque converter that can be easily manufactured and can increase the design freedom.

In general, the torque converter is installed between the engine of the vehicle and the transmission to transmit the driving force of the engine to the transmission using a fluid. The torque converter is a reactor that receives a driving force of the engine and rotates the impeller rotating, the turbine rotated by the oil discharged from the impeller, and the flow of oil flowing back to the impeller in the direction of rotation of the impeller to increase the torque change rate ( Also known as a "status").

Torque converters are equipped with a lock-up clutch (also called a 'damper clutch'), a means of direct connection between the engine and the transmission, as the load on the engine can decrease power transmission efficiency. The lockup clutch is positioned between the turbine and the front cover, which is directly connected to the engine, allowing the engine's rotational power to be transmitted directly to the turbine.

This lockup clutch includes a piston movable axially in the turbine shaft. And the piston is coupled to the friction material in friction contact with the front cover. And the piston is coupled to the torsional damper (Torsional damper) that can absorb the shock and vibration acting in the rotational direction of the shaft when the friction material is coupled to the front cover.

The above-described reactor may be manufactured by casting, and the number of reactor blades may vary depending on the design. In particular, when the reactor blades are arranged to overlap each other and require a sufficient number, there is a difficulty in manufacturing by the conventional method. Therefore, there is a problem in that the design freedom is reduced due to the difficulty of such manufacturing.

Therefore, the present invention has been proposed to solve the above problems, and an object of the present invention is to provide a torque converter for a vehicle that can facilitate the manufacture of the reactor, and can improve the design freedom.

In order to achieve the above object, the present invention provides a front cover, an impeller coupled to the front cover and rotating together, a turbine disposed at a position facing the impeller, and positioned between the impeller and the turbine and oil coming out of the turbine. A reactor for changing the flow of the impeller to the impeller side, a lockup clutch capable of directly connecting the front cover and the turbine, and a damper coupled to the lockup clutch or turbine to absorb a shock acting in the circumferential direction, wherein the reactor includes: Provided is a vehicle torque converter in which two are superimposed on one another.

The reactor includes a first inner ring portion, a first outer ring portion spaced apart from the first inner ring portion, and a first reactor including first reactor blades coupled to the first inner ring portion and the first outer ring portion. ; A second reactor including a second inner ring portion, a second outer ring portion spaced apart from the second inner ring portion, and second reactor blades coupled to the first inner ring portion and the second outer ring portion; It is preferable that the first reactor and the second reactor are made of fitting coupling with each other.

The first reactor may be provided with one or more protrusions on the first inner ring portion, and the second reactor may be provided with one or more grooves fitted to the second inner ring portion corresponding to the protrusions.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a torque converter applied to a transmission of a vehicle. The torque converter of the present invention is disposed at a position facing the impeller 6 and the impeller 6, which are connected to the crankshaft on the engine side and rotated, connected to the front cover 4, and rotated together. Turbine 8 and a reactor 10 (also referred to as a "stator") located between the impeller 6 and the turbine 8 to redirect the flow of oil from the turbine 8 to the impeller 6 side. do. The reactor 10 delivering oil to the impeller 6 has the same center of rotation as the front cover 4. And the lockup clutch 14 used as a means for directly connecting the engine and the transmission is disposed between the front cover 4 and the turbine (8).

The lockup clutch 14 has a piston 16 formed in a substantially disk shape, and the piston 16 is coupled with a friction material 18 which can be in contact with the front cover 4. And the piston 16 is arranged to be rotatable in the center direction of the axis and to be moved in the axial direction. On the other hand, in the lockup clutch 14 or the turbine, a torsional damper 40 which absorbs the torsional force acting in the rotational direction of the shaft when the friction material 18 is in close contact with the front cover 4 and reduces vibrations. damper) is combined.

As described above, the reactor 10 includes a first reactor 51 and a second reactor 61 having the same or similar shape. The first reactor 51 includes a first inner ring portion 51a, a plurality of first reactor blades 51b coupled to the first inner ring portion 51a, and a first reactor coupled to the first reactor blades 51b. The outer ring part 51c is included. The first reactor 51 is provided with one or more protrusions 51d at the first inner ring portion 51a. These protrusions 51d are for engaging with the second reactor 61 disposed adjacently. The second reactor 61 includes a second inner ring portion 61a, a plurality of second reactor blades 61b coupled to the second inner ring portion 61a, and a second coupler coupled to the second reactor blades 61b. The outer ring part 61c is included. The second reactor 61 is provided with one or more grooves 61d in the second inner ring portion 51a. These grooves 61d are preferably made of a structure that can be fitted to the protrusion 51d provided on the first inner ring portion 51a of the first reactor 51 disposed adjacently. In the exemplary embodiment of the present invention, an example in which the first reactor 51 and the second reactor 61 are fixed by fitting coupling using protrusions and grooves, respectively, is not limited thereto. It is also possible to manufacture by a method.

 Reactor 10 having such a structure is to fabricate the first reactor 51 and the second reactor 61, respectively, integrally assembled with each other. This reactor 10 is suitable for a structure in which it is necessary to arrange a plurality of reactor blades in succession adjacent to each other. Therefore, even if the reactor blades are arranged in a large amount can be easily manufactured, and also because the reactor can be designed regardless of the number of reactor blades design freedom is increased.

As described above, the present invention is not only easy to manufacture but also has an effect of increasing design freedom by manufacturing the two reactors by combining them with each other.

Claims (3)

Front cover 4; An impeller 6 coupled to the front cover 4 and rotating together; A turbine 8 disposed at a position facing the impeller 6; A reactor (10) located between the impeller (6) and the turbine (8) to change the flow of oil from the turbine (8) to the impeller (6) side; A lockup clutch 14 capable of directly connecting the front cover 4 and the turbine 8; A tonic damper (40) coupled to the lockup clutch (14) or turbine (8) to absorb a shock acting in the circumferential direction; The reactor 10 is To the first inner ring portion 51a, the first inner ring portion 51c, the first inner ring portion 51a and the first outer ring portion 51c, which are arranged to be spaced apart from the first inner ring portion 51a and the first inner ring portion 51a. A first reactor 51 comprising first reactor blades 51b coupled thereto, To the second inner ring portion 61a, the second inner ring portion 61c and the second inner ring portion 61a and the second outer ring portion 61c which are arranged to be spaced apart from the second inner ring portion 61a and the second inner ring portion 61a. A second reactor 61 comprising second reactor blades 61b coupled thereto; The first reactor (51) and the second reactor (61) is a vehicle torque converter consisting of a fitting coupling to each other. delete The method according to claim 1, The first reactor 51 is provided with one or more protrusions 51d on the first inner ring portion 51a, And the second reactor (61) is provided with at least one groove (61d) fitted in the second inner ring portion (61a) corresponding to the protrusion (51d).

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