Thrust roller bearing

A thrust roller bearing and roller technology, applied in the field of thrust roller bearings, can solve the problems of undesired heat generation and increase of rotational torque, and achieve the effects of suppressing direct contact, suppressing torque increase, and enhancing reliability

Active Publication Date: 2009-11-04
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the frictional resistance increases as the rotational speed of the rotating shaft increases, not only does the rotational torque increase, but also undesired heat generation occurs

Method used

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  • Thrust roller bearing
  • Thrust roller bearing
  • Thrust roller bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 is a sectional view of a cage of a thrust needle roller bearing as a thrust roller bearing according to Embodiment 1 of the present invention, figure 2 yes figure 1 An exploded perspective view of the cage and rollers in , and image 3 yes figure 1 Plan view of the notch in .

[0029] In the drawings, reference numeral 1 denotes a ring-shaped cage having a wave-folded portion 3 provided between an outer-diameter-side raceway guide portion 2a on the outer-diameter side and an inner-diameter side on the inner-diameter side. Between the raceway guide part 2b. This wave folded portion 3 includes an outer diameter side projecting portion 3a and an inner diameter side projecting portion 3b protruding substantially equally on one side, and on the other side protruding all the way beyond the outer diameter side raceway guide portion 2a and the inner diameter side raceway guide portion 2a. The middle protruding portion 3c at a higher position on the upper surfa...

Embodiment 2

[0035] Figure 5 is a sectional view of a cage of a thrust roller bearing according to Embodiment 2 of the present invention, and Figure 6 yes Figure 5 Plan view of the notch in .

[0036] In this embodiment, the retainer 1 is formed by integrally joining two annular plates 1a, 1b.

[0037] Between the outer diameter side raceway guide portions 2a, 2c and the inner diameter side raceway guide portions 2b, 2d of the two annular plates 1a, 1b, there are provided trapezoid-shaped protruding portions 3a, 3b folded in directions opposite to each other. . Between the raceway guide portions 2a, 2b and 2c, 2d are formed rectangular-shaped openings 5a, 5b that are long in the radial direction, and the two openings 5a, 5b are combined to form a roller for accommodating rollers. Notch 5 of 10. In addition, on both end faces in the radial direction of the opening 5a of one of the annular plates (for example, 1a), at approximately the center portion in the lateral direction thereof,...

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PUM

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Abstract

A thrust roller bearing comprises a retainer (1) having pockets (5) provided in the circumferential direction between the outer diameter side race guide part (2a) and the inner diameter side race guide part (2b) at predetermined intervals, and rollers (10) so contained in the pockets (5) as to be capable of performing rolling motion. Projections (6a, 6b) are formed on each of the pockets (5) at a substantially lateral center of its outer diameter side end surface. The roller (10) is so contained in the pocket (5) that the roller (10) is opposed to the projections (6a, 6b) at the peripheral side of the axial end surface outer from its center.

Description

technical field [0001] The present invention relates to a thrust roller bearing used, for example, in automatic transmissions, air-conditioning compressors, etc. in automobiles. Background technique [0002] For example, if Figure 7 As shown in , the thrust roller bearing has a cage 1 comprising an annular plate formed by stamping a sheet metal or by molding synthetic resin and provided with a notch 5 for use in The rollers are held radially from the center O of the annular plate at certain intervals in the circumferential direction. The rollers are housed in the notches 5 and held free to roll by a plurality of retaining hooks provided on the end faces of the notches 5 in the circumferential direction. [0003] Figure 8 A and 8B are views for explaining a conventional cage and rollers housed in recesses of the cage. [0004] The cage 20 includes an outer diameter side raceway guide portion 21a provided on the outer diameter side in the radial direction, and an inner di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/46F16C19/30
CPCF16C33/467F16C33/543F16C33/547F16C19/30F16C19/305
Inventor 中冈贤一
Owner JTEKT CORP
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