Turbine assembly of hydraulic torque converter

Abstract

The invention provides a turbine assembly of a hydraulic torque converter. The turbine assembly comprises a turbine shell and a plurality of turbine blades. The turbine blade includes a blade unit and an inner ring unit. The blade units are of a spatial three-dimensional streamline curved surface structure from the inlet end to the outlet end in the liquid flow direction. Blade claws are arranged on the outer ring arc surfaces of the blade units, and the inner ring arc surfaces of the blade units are bent and extend out of the inner ring units. The blade units and the inner ring units are in smooth transition. The inner ring unit is arranged on one side of the blade unit in the circumferential direction. The multiple turbine blades are annularly and evenly distributed around the axis of the turbine shell. The turbine blades and the turbine shell are fixed in the circumferential direction through the blade claws. A tenon is arranged at the end, away from the blade unit, of each inner ring unit, and a mortise groove used for receiving the tenon of the adjacent blade unit is formed in the end, close to the blade unit, of each inner ring unit. The multiple blade units are arranged in an overlapped mode and connected end to end to form the turbine inner ring. After the blades and the inner ring are designed into a whole, the blade gaps are only related to the adjacent blades, so that better guarantee is achieved, and the problem that the blade gaps are difficult to guarantee due to tolerance accumulation of a plurality of blades is solved. When the blades are mounted, the blades are only related to adjacent blades according to precision, and the inner ring design is canceled, so that the problem that the tolerance accumulation of a plurality of blades is difficult to mount the inner ring is solved. And after the blades and the inner ring are designed into a whole, two parts are reduced to one part, so that the design cost is lower.

Description

Technical Field

[0001] The invention patent relates to the technical field of automobile torque converters, and in particular to a torque converter turbine assembly. Background Art

[0002] The automobile torque converter is a key component used in cars with automatic transmissions such as AT and CVT. The torque converter uses the flow of liquid to smoothly transfer the engine torque to the automatic transmission. The torque converter is composed of multiple parts, which are filled with automatic transmission oil and installed between the engine and the automatic transmission. At present, the single-stage two-phase three-element locking integrated torque converter composed of a pump assembly, a turbine assembly, a guide wheel assembly, a cover assembly and a locking clutch assembly is widely used in cars.

[0003] When fixing the turbine inner ring of the existing torque converter turbine assembly, it is necessary to assemble the inner blade claws of all turbine blades at the same time, which makes the assembly extremely difficult. In order to ensure smooth assembly, the groove width tolerance of the turbine inner ring needs to be increased. However, after the groove width of the turbine inner ring is increased, the gap between the inner ring and the blade claws becomes larger, which makes it easy for poor brazing to occur at the gap that becomes larger during brazing.

[0004] Therefore, it is of great significance to develop a torque converter turbine assembly that can solve the difficulty in assembling the inner ring of the torque converter turbine assembly while also meeting the precision required for brazing of the turbine assembly.

[0005] Invention patent content

[0006] The purpose of this patent is to provide a hydraulic torque converter turbine assembly to solve the problems existing in the prior art.

[0007] The technical solution adopted to achieve the patent purpose of the present invention is as follows: a torque converter turbine assembly includes a turbine housing and a plurality of turbine blades.

[0008] The turbine blade includes a blade unit and an inner ring unit.

[0009] The blade unit forms a three-dimensional streamlined curved surface structure from the inlet end to the outlet end along the liquid flow direction. The outer ring arc surface of the blade unit is provided with blade claws, and the inner ring arc surface is bent to extend the inner ring unit. The blade unit and the inner ring unit are smoothly transitioned. The inner ring unit is arranged on one side of the blade unit along the circumferential direction.

[0010] The turbine blades are evenly arranged in a ring around the axis of the turbine housing. The turbine blades are circumferentially fixed to the turbine housing by blade claws. A tenon is provided at one end of each inner ring unit away from the blade unit, and a mortise and tenon groove for receiving the tenon of an adjacent blade unit is provided at one end close to the blade unit. The blade units are arranged in a stacked manner and connected end to end to form a turbine inner ring.

[0011] Furthermore, the blade unit and the inner ring unit are cast in one piece.

[0012] Furthermore, the thickness of the blade unit is 0.7-1.5 mm.

[0013] The technical effect of this patent is unquestionable:

[0014] 1. After the blades and the inner ring are designed as one, the blade clearance is only related to the adjacent blades and is better guaranteed, which solves the problem that the blade clearance is difficult to guarantee due to the tolerance accumulation of multiple blades;

[0015] 2. When installing the blades, the accuracy is only related to the adjacent blades. After the inner ring design is cancelled, the problem of tolerance accumulation of multiple blades and difficulty in installing the inner ring is solved;

[0016] 3. After the blade and the inner ring are designed as one, two parts are reduced to one part, and the design cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a turbine assembly;

[0018] Figure 2 is a schematic diagram of a turbine blade;

[0019] Figure 3 Schematic diagram of the turbine casing and turbine blade assembly.

[0020] In the figure: turbine housing 2, turbine blades 3, blade units 301, and inner ring units 302. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the field, which should be included in the protection scope of the present invention.

[0022] Embodiment 1:

[0023] See also Figure 1 A hydraulic torque converter turbine assembly includes a turbine housing 2 and a plurality of turbine blades 3.

[0024] See also Figure 2 The turbine blade 3 includes a blade unit 301 and an inner ring unit 302. The blade unit 301 forms a three-dimensional streamlined curved surface structure from the inlet end to the outlet end along the liquid flow direction. The outer ring arc surface of the blade unit 301 is provided with blade claws, and the inner ring arc surface is bent to extend the inner ring unit 302. The blade unit 301 and the inner ring unit 302 are smoothly transitioned. The inner ring unit 302 is arranged on one side of the blade unit 301 along the circumferential direction. The inner ring unit 302 can be regarded as being cut from the existing turbine inner ring. The axial cross-sectional shape of the inner ring unit 302 is consistent with the existing turbine inner ring.

[0025] See also Figure 3 The turbine blades 3 are evenly arranged in a ring around the axis of the turbine housing 2. The turbine blades 3 are circumferentially fixed to the turbine housing 2 by blade claws. A tenon 3021 is provided at one end of each inner ring unit 302 away from the blade unit 301, and a mortise 3022 is provided at one end close to the blade unit 301 for receiving the tenon 3021 of the adjacent blade unit 301. Several blade units 301 are arranged in a stacked manner, connected end to end to form a turbine inner ring.

[0026] Embodiment 2:

[0027] The main contents of this embodiment are the same as those of Embodiment 1, wherein the blade unit 301 and the inner ring unit 302 are integrally cast.

[0028] Embodiment 3:

[0029] The main contents of this embodiment are the same as those of Embodiment 1 or 2, wherein the thickness of the blade unit 301 is 0.7-1.5 mm.

[0030] Embodiment 4:

[0031] The main content of this embodiment is the same as any one of embodiments 1 to 3, wherein the mortise 3022 includes a rectangular groove and a circular hole. The rectangular groove is opened on the surface of the inner ring unit, the width of the rectangular groove is 1.5 to 3 mm, the circumferential length of the rectangular groove is 1.5 to 4 mm, and the depth of the rectangular groove is 0.05 to 0.2 mm greater than the thickness of the blade unit 301. A circular hole is opened on the end face of the rectangular groove. The diameter of the circular hole is 1 to 4 mm greater than the width of the rectangular groove. The tenon 3021 includes a rectangular block and a cylinder. The width of the rectangular block is 0.05 to 0.5 mm smaller than the width of the rectangular groove, and the length of the rectangular block is 0.05 to 0.3 mm greater than the length of the rectangular groove. There is a cylinder with a circular axial plane on the end face of the rectangular block. The diameter of the cylinder is 0.05 to 0.3 mm smaller than the diameter of the circular hole. After the adjacent blades are installed, the rectangular block and the circular cylinder theoretically coincide with the positions of the rectangular groove and the circular hole of the adjacent blade.

Claims

1. A torque converter turbine assembly, characterized in that: It comprises a turbine housing (2) and a plurality of turbine blades (3); The turbine blade (3) comprises a blade unit (301) and an inner ring unit (302); The blade unit (301) forms a three-dimensional streamlined curved surface structure from the inlet end to the outlet end along the liquid flow direction; the outer annular arc surface of the blade unit (301) is provided with blade claws, and the inner annular arc surface is bent and extended to form an inner annular unit (302); the blade unit (301) and the inner annular unit (302) are smoothly transitioned; the inner annular unit (302) is arranged on one side of the blade unit (301) along the circumferential direction; The plurality of turbine blades (3) are evenly arranged in a ring around the axis of the turbine housing (2); the turbine blades (3) are circumferentially fixed to the turbine housing (2) via blade claws; a tenon (3021) is provided at one end of each inner ring unit (302) away from the blade unit (301), and a mortise (3022) for receiving the tenon (3021) of an adjacent blade unit (301) is provided at one end close to the blade unit (301); and the plurality of blade units (301) are arranged in a stacked manner and connected end to end to form a turbine inner ring.

2. A torque converter turbine assembly according to claim 1, characterized in that: The blade unit (301) and the inner ring unit (302) are integrally cast.

3. The torque converter turbine assembly according to claim 1, characterized in that: The thickness of the blade unit (301) is 0.7-1.5 mm.

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