Ring CVT

A continuously variable transmission and ring-type technology, which is applied in the direction of vehicle gearboxes, friction transmission devices, transmission components, etc., can solve the problems of rising manufacturing costs of trunnions, inability to grind, and poor processing efficiency, and achieve uniform assembly operations and processing Easy and cost-effective

Inactive Publication Date: 2017-03-15
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, since the side surfaces of the protrusions as the processing surface are parallel to each other, in other words, since these side surfaces are perpendicular to the rotation axis of the grindstone, the temperature of these side surfaces rises, and grinding burns are likely to occur.
In addition, since the axial direction of the rotating shaft of the grindstone is parallel to the pressing direction, the side surface of the protrusion and the cylindrical convex surface cannot be ground at the same time, the processing efficiency is poor, and the manufacturing cost of the trunnion as a whole increases.

Method used

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Examples

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Embodiment Construction

[0075] [First example of embodiment]

[0076] Figure 1~Figure 8 It shows the first example of the embodiment of the present invention. In addition, this example is characterized by the following structure: in order to stabilize the shifting operation, the outer ring 16b constituting the thrust ball bearing 13a is supported by the support beam portion 23a of the trunnion 7b so as to be swingable relative to the support beam portion 23a, In addition, the outer ring 16 is prevented from being displaced in the axial direction of the support beam portion 23a. The structure and function of the other parts are the same as in the second example of the conventional structure.

[0077] The outer ring 16b is supported by the concave portion 24 provided on the outer surface of the outer ring 16b and the cylindrical convex surface 22 of the support beam portion 23a so as to be supported on the input disc 2 and the output disc 5 ( See Figure 21 ) Swing displacement in the axial direction. In...

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Abstract

The present invention realizes a structure of a toroidal continuously variable transmission that is easy to manufacture, manage, and assemble, and is easy to achieve low cost, stable shifting operation, and easy to process. By engaging the concave portion (24) provided on the outer surface of the outer ring (16b) and the cylindrical convex surface (22) of the support beam portion (23a) of the trunnion (7b), the outer surface of the thrust rolling bearing can be supported in a swinging manner. Circle (16b). On the inner surface of the concave part (24), the groove (27) formed in the circumferential direction centering on the support beam part (23a) is engaged with the protrusion (28) formed on the outer peripheral surface of the support beam part (23a). , to limit the displacement of the outer ring (16b) in the axial direction of the supporting beam portion (23a). The groove (27) is a tapered groove with a wide opening and a narrow bottom, and the protrusion (28) is a tapered protrusion with a wide base and a narrow top.

Description

Technical field [0001] The present invention relates to a semi-ring type toroidal continuously variable transmission, which is used as an automatic transmission for vehicles such as automobiles, automatic transmissions for construction machinery, automatic transmissions for generators used in aircrafts, etc., and for regulating pumps, etc. Automatic transmission for the operating speed of various industrial machinery. Background technique [0002] As described in Japanese Patent Application Publication No. 2003-214516, Japanese Patent Application Publication No. 2007-315595, Japanese Patent Application Publication No. 2008-25821, Japanese Patent Application Publication No. 2008-275088, etc., a half ring is used as a transmission for automobiles The toroidal type continuously variable transmission is well known. In addition, Japanese Patent Application Publication No. 2004-169719 and the like describe a structure that combines a toroidal continuously variable transmission and a p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H15/38
CPCF16H15/38F16H57/049F16H15/40F16H2200/00
Inventor 大黑优也西井大树横山将司后藤伸夫丰田俊郎
Owner NSK LTD
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