Hose co-moldable with plastic tub, in particular for a washing machine

A technology for washing machines and plastic buckets, which is applied in the hose field of washing machines, and can solve problems such as the withdrawal of the bearing itself, loosening of the connection, and movement of the bearing

Active Publication Date: 2008-07-30
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the thermal expansion coefficient of the metal material constituting the tubular body is different from that of the metal material constituting the bearing, and since the actual molding conditions include high temperature and high injection pressur

Method used

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  • Hose co-moldable with plastic tub, in particular for a washing machine
  • Hose co-moldable with plastic tub, in particular for a washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Referring to Figures 1 and 2, numeral 1 designates a hose which may be integrally co-moulded with the washing machine tub.

[0011] A hose 1 has a longitudinal axis A and comprises a hollow metallic tubular body 2 extending along axis A, two casings 3 and 4 corresponding to opposite ends of the tubular body 2, and two Internal rolling bearings C3 and C4, which are better described in the description below.

[0012] The tubular body 2 is axially delimited by two annular end faces 3a and 4a, which delimit the inlet boundaries 13 and 14 for the housings 3 and 4, respectively, and which are internally composed of an inner section 55 and two inlets The conduit 5 of the sections 53 and 54 passes through, the inlet sections 53 , 54 extending from the borders 13 and 14 respectively towards the section 55 and delimiting the housings 3 and 4 .

[0013] In particular, the inner section 55 has a diameter smaller than that of each of the sections 53 and 54 and defines together with...

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PUM

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Abstract

Co-moldable hose (1) with washing machine tubs presenting a longitudinal axis (A) and provided with two bearings (C3, C4) which are arranged along the axis (A) at a determined distance from one another, and with a tubular metallic body (2) which extends along the axis (A) and which is in turn provided, for each bearing (C3, C4), with a housing (3, 4) for each relative bearing (C3, C4) which is delimited towards the axis (A) by a respective inner radial surface (53a, 54a); two covering and blocking bodies (83, 84) also being co-molded with the bearings (C3, C4) and with the tubular body (2) inside each housing (3, 4) in a position which is radially intermediate between a relative radial surface (53a, 54a) and a relative bearing (C3, C4) in order to internally cover the housing (3, 4) itself and to block the relative bearing (C3, C4) inside the relative housing (3, 4).

Description

technical field [0001] The present invention relates to a hose co-mouldable with a plastic tub, particularly for washing machines. Background technique [0002] Usually, the hose, which can be co-moulded with the washing machine tub, becomes an integral part of the tub itself, which facilitates the assembly operation of the washing machine, and includes two rolling bearings arranged along the rotation axis of the washing machine tub; A tubular body of material having two end housings for accommodating within its own interior two bearings arranged at a predetermined distance from each other once the bearings are press-fit Inside the housing, the tubular body can be co-molded with the plastic tub. In order to ensure a proper interference fit between the bearing and the housing, the housing is previously machined, in particular by grinding. [0003] The tubular body not only has the function of stiffening the hose, but also holds the two bearings in position during the operat...

Claims

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Application Information

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IPC IPC(8): D06F39/00F16L11/00
CPCD06F37/262F16C35/04F16C19/54D06F37/00D06F37/269D06F37/20F16C2340/00F16C35/042F16C19/06F16C35/077F16C19/56
Inventor R·莫拉G·佩罗内W·菲内蒂T·拉扎里
Owner AB SKF
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