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Boot for constant velocity joint and cross group-type constant velocity joint

A technology of coupling and dust cover, applied in the direction of coupling, elastic coupling, engine sealing, etc., can solve the problem of high cost of assembly process, and achieve the effect of improving rigidity, preventing falling off, and restraining deformation.

Inactive Publication Date: 2015-07-08
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, in the case of using other components such as joints or circlips (Japanese Patent Application Laid-Open No. 1-69916 figure 2 , Japanese Utility Model Publication No. 6-32755), the increase in the number of components and the increase in the assembly process lead to high cost

Method used

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  • Boot for constant velocity joint and cross group-type constant velocity joint
  • Boot for constant velocity joint and cross group-type constant velocity joint
  • Boot for constant velocity joint and cross group-type constant velocity joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 , figure 2 As shown, the constant velocity coupling dust cover 1 according to an embodiment of the present invention is composed of the following components: a large-diameter cylindrical part 2; , and the diameter is smaller than the large-diameter cylindrical portion 2; The intermediate portion 10 is composed of a stretchable bellows 19 integrally connected to the small-diameter cylindrical portion 3 , and a rigid forming portion 11 integrally connected to the bellows 19 and the large-diameter cylindrical portion 2 . The rigid forming part 11 expands in diameter from the corrugated part 19 toward the large-diameter cylindrical part 2 , and the outer peripheral surface 101 and the inner peripheral surface 102 of the rigid forming part 11 respectively have a plurality of stepped parts 61 and 62 in a stepped shape.

[0063] As shown in FIG. 3( a ), the stepped portions 61 of the outer peripheral surface 101 of the rigidity forming portion 11 are alter...

Embodiment 2

[0073] Such as Figure 4 As shown, the stepped portion 61 of the outer peripheral surface 101 of the rigidity forming portion 12 of the constant velocity coupling boot of this example protrudes radially outward compared to Example 1, and the side surface 611 of the stepped portion 61 is inclined relative to the axial direction. The end surface 612 of the stepped portion 61 is parallel to the radial direction. Other than that, it is the same as in Example 1.

Embodiment 3

[0094] refer to Figure 11 ~ Figure 13 The cross groove type constant velocity coupling 50 (hereinafter simply referred to as "constant velocity coupling") of this example will be described. Figure 11 An axial sectional view of the constant velocity coupling 50 in the case where the connection angle is 0 degrees is shown. Figure 12 An axial cross-sectional view of the constant velocity coupling 50 is shown when the connection angle is an angle equal to or greater than a predetermined value. Figure 13 show Figure 12 An enlarged view of the contact portion between the ball 53 and the rigidity forming part 56c in .

[0095] Such as Figure 11 As shown, the constant velocity coupling 50 has: an outer ring 51 , an inner ring 52 , balls 53 , a retainer 54 , a rotating shaft 55 , and a dust cover 56 .

[0096] The outer ring 51 is formed into a cup shape (cylindrical shape with a bottom). A plurality of outer ring grooves 51 a are formed on the inner peripheral surface of th...

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PUM

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Abstract

A boot for constant-velocity universal joint comprises a major-diameter cylindrical portion 2, a minor-diameter cylindrical portion 3 being separated away from and being put in place concentrically with the major-diameter cylinder portion 2, and having a smaller diameter than that of the maj or-diameter cylindrical portion 2, and an intermediate portion 10 connecting the major-diameter cylindrical portion 2 with the minor-diameter cylindrical portion 3. The intermediate portion 10 comprises a stretchable bellows portion 19 being connected with the minor-diameter cylindrical portion 3 integrally, and a rigidity-producing portion 11 being connected with the bellows portion 19 and the major-diameter cylindrical portion 2 integrally. The rigidity-producing portion 11 enlarges diametrically from the bellows portion 19 toward the major-diameter cylindrical portion 2, and additionally at least an outer peripheral surface 101 of the rigidity-producing portion 11 has a plurality of shoulders 61 in a stepwise manner. By means of the rigidity-producing portion 11, the rigidity at around the major-diameter cylindrical portion is enhanced, and thereby it is possible to suppress deformation at the time of assembling.

Description

technical field [0001] The present invention relates to a dust cover for a constant velocity coupling used to cover a constant velocity coupling used for a propeller shaft of a vehicle, and to the circumferential direction of the trajectory of balls in the groove of the outer ring and the trajectory of the ball in the groove of the inner ring A cross-groove constant velocity coupling formed by an upper cross. Background technique [0002] In a power transmission device such as a vehicle, driving force is transmitted from a transmission to drive wheels via a propeller shaft composed of a rotary shaft and a constant velocity coupling. Such as Figure 10 As shown, the transmission shaft has: a rotating shaft 83 ; and couplings 41 and 42 arranged at both axial ends of the rotating shaft 83 . One coupling 41 is connected to a driving member such as a differential gear on an input side, and the other coupling 42 is connected to a driven member such as a driving wheel on an output...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D3/84F16J3/04F16J15/52
Inventor 铃木聪大江贤次古田裕二铃木智
Owner JTEKT CORP