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Resin boot

A protective cover and resin technology, applied in elastic couplings, bellows, mechanical equipment, etc., can solve the problems of poor flexibility of thermoplastic polyester elastomers, improve production performance, suppress scratching noise, and improve installation operability Effect

Inactive Publication Date: 2019-10-29
FUKOKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this thermoplastic polyester elastomer is inferior in flexibility compared to neoprene, and in order to improve flexibility, it is necessary to form the peaks and valleys constituting the corrugations in multiple stages.

Method used

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  • Resin boot
  • Resin boot
  • Resin boot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Examples are shown below. In this embodiment, the resin protective cover is made of a thermoplastic elastomer, that is, a polyolefin-based elastomer. In the embodiment, only any one of the two pairs of protective cover slopes 13 facing the second protective cover slope 13 counted from the end of the large diameter side (refer to Figure 4) formed a linear groove 14. The angles between the linear groove 14 and the radial centerline Z of the protective cover 1 are set as +55° and -55°. Also, the depth of the linear groove 14 is set to 0.1 mm with respect to the thickness of 1 mm of the bellows portion 10 of the boot. The cross section of the linear groove 14 is trapezoidal, the width of the groove bottom of the linear groove 14 is 150 μm, and the width of the expanded groove opening is 550 μm. And, the width of the area 15 to be surrounded by the linear groove 14 ( Figure 5 The length of one side of the shown substantially parallelogram) was set to 850 μm. At this t...

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PUM

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Abstract

The purpose of the present invention is to provide a resin boot that can exhibit the effect of minimizing friction sounds in a stable manner over a long period of time without being affected by a rotational direction. To achieve this purpose, this resin boot 1 is provided with a tubular boot bellows portion 10 in which peak parts 11 and trough parts 12 are alternately and continuously formed, wherein, in the boot bellows portion 10, a plurality of intersecting linear grooves 14 are provided to the surface of a boot inclined surface 13 where the apices 11A of the peak parts 11 and the bottoms 12A of the trough parts 12 are connected.

Description

technical field [0001] The invention relates to a resin protective cover for a vehicle, the resin protective cover covers a plurality of connecting parts of mechanical elements which can change relative to each other. In particular, the present invention relates to a protective cover for a constant velocity joint that covers a constant velocity joint used for a drive shaft and a propeller shaft of a vehicle. Background technique [0002] Generally, a constant velocity joint that transmits rotation from these drive shafts to a driven shaft or the like at a constant velocity is used for a drive shaft and a propeller shaft of a vehicle. The constant velocity joint is equipped with a flexible constant velocity joint cover that encapsulates grease as a lubricant or prevents the intrusion of external dust and water. [0003] In addition, in order to cope with high-speed rotation and sliding at various operating angles during driving, the protective cover for the constant velocity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D3/84
CPCF16J3/043F16D3/845F16D3/223F16D2003/22323F16J3/041
Inventor 大野雄三
Owner FUKOKU CO LTD