Turbine shaft sleeve structure of hydraulic torque converter

Abstract

The utility model discloses a turbine shaft sleeve structure of a hydraulic torque converter. The turbine shaft sleeve structure comprises a metal ring, a transmission input shaft and a turbine shaft sleeve. The metal ring is fixed on a turbine shaft sleeve and is in small intermittent fit with an input shaft of a transmission, and the gap design not only meets the requirement that a lock-up clutch of the hydraulic torque converter quickly builds locking pressure, but also can ensure that a certain leakage amount meets the requirement that the lock-up clutch unlocks and relieves pressure. A metal ring unthreaded hole sealing mode is adopted, the risk that the oil seal is damaged when the input shaft of the transmission axially moves in an extremely low temperature environment is eliminated, and the oil seal can be widely applied to automobile hydraulic torque converters.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic torque converters, in particular to a turbine shaft sleeve structure of a hydraulic torque converter. Background Art

[0002] Currently, the torque converter turbine sleeve and the transmission input shaft are generally sealed with an oil seal. However, in extremely low temperature environments, there is a risk of oil seal damage when the transmission input shaft moves axially.

[0003] Therefore, a new sealing method is needed between the turbine sleeve and the transmission input shaft. Utility Model Content

[0004] The utility model aims to provide a turbine sleeve structure for a hydraulic torque converter, comprising a metal ring, a transmission input shaft and a turbine sleeve.

[0005] The metal ring is fixed on the turbine sleeve and is matched with the transmission input shaft with a small gap.

[0006] Furthermore, the metal ring is fixedly connected to the turbine sleeve via a ring weld.

[0007] The technical effect of the present invention is unquestionable, and the beneficial effects of the present invention are as follows:

[0008] The metal ring aperture sealing method is adopted to eliminate the risk of oil seal damage when the transmission input shaft moves axially in extremely low temperature environments, and can be widely used in automotive torque converters. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the turbine sleeve of the torque converter of the present invention using a metal ring light hole seal;

[0010] In the figure: 1-metal ring; 2-ring weld; 3-transmission input shaft; 4-turbine sleeve. DETAILED DESCRIPTION

[0011] The present invention will be further described below with reference to the following examples. However, it should not be understood that the scope of the present invention is limited to the following examples. Without departing from the above technical concept of the present invention, various substitutions and modifications based on common technical knowledge and conventional means in the field should be included in the scope of protection of the present invention.

[0012] Example 1:

[0013] See also Figure 1 A turbine sleeve structure for a torque converter includes a metal ring 1, a transmission input shaft 3 and a turbine sleeve 4.

[0014] The metal ring 1 is fixed to the turbine sleeve 4 and has a small gap with the transmission input shaft 3. This gap design not only meets the requirement of the torque converter lock-up clutch to quickly build up the locking pressure, but also ensures a certain leakage to meet the requirement of unlocking the lock-up clutch and releasing pressure.

[0015] Example 2:

[0016] The main structure of this embodiment is the same as that of embodiment 1. Furthermore, the metal ring 1 is fixedly connected to the turbine sleeve 4 via a ring weld 2.

[0017] Example 3:

[0018] The main structure of this embodiment is the same as any one of Embodiments 1 to 2. Furthermore, for a two-channel torque converter, the turbine sleeve and the transmission input shaft sealing structure are designed to meet the locking requirements of the torque converter's lockup clutch.

[0019] The technical solution adopted to achieve the purpose of the utility model is as follows: the metal ring and the turbine sleeve are connected together by welding, and the metal ring and the transmission input shaft are matched with a small gap to achieve a certain sealing performance. The gap design not only needs to meet the requirement of the lock-up clutch of the torque converter to quickly establish the locking pressure, but also needs to ensure a certain leakage amount to meet the requirement of unlocking and relieving the pressure of the lock-up clutch.

[0020] The working process of the utility model is as follows: the turbine sleeve of the torque converter and the transmission input shaft have a certain sealing fit, which ensures that the torque converter can establish sufficient locking pressure when in the locking working condition, realizes the locking function of the locking clutch, and improves the transmission efficiency of the torque converter.

[0021] Example 4:

[0022] The main structure of this embodiment is the same as any one of Embodiments 1 to 3. Furthermore, the metal ring aperture sealing method is adopted to eliminate the risk of oil seal damage when the transmission input shaft 3 moves axially in an extremely low temperature environment.

Claims

1. A turbine sleeve structure for a torque converter, characterized in that: It comprises a metal ring (1), a transmission input shaft (3) and a turbine sleeve (4); The metal ring (1) is fixed on the turbine sleeve (4) and is fitted with the transmission input shaft (3) with a small gap.

2. The torque converter turbine sleeve structure according to claim 1, characterized in that: The metal ring (1) is fixedly connected to the turbine sleeve (4) via a ring weld (2).

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