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Fastener and fastener system for soft materials

A fastening and threading technology, which is applied in the direction of threaded fasteners, locking fasteners, connecting components, etc., can solve problems such as loosening of fasteners, overall detachment, and complicated situations

Inactive Publication Date: 2018-08-31
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is further complicated when simple threaded fasteners are used to attach one or more objects made of plastic to another object made of plastic
If creep reduces the clamping load in tension enough to loosen or release the threads, the fastener becomes loose and can rotate, which can lead to gross disengagement

Method used

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  • Fastener and fastener system for soft materials
  • Fastener and fastener system for soft materials
  • Fastener and fastener system for soft materials

Examples

Experimental program
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Embodiment Construction

[0029] Reference is now made more particularly to the drawings, and specifically to Figure 1a to Figure 1d , a threaded fastener 10 comprising a male threaded component or bolt 12, a washer 14 and an object 16 to be fastened. As will be explained more fully below, fastener 10 incorporates a number of features such that washer 14 locks to object 16 and male threaded component 12 locks to washer 14 independently of the clamping load provided by the fastener. Thus, once fastened, the male threaded fastener 12 resists inadvertent disengagement from the threaded assembly even if the fastened assembly changes over time.

[0030] Now refer to Figure 4 , The bolt 12 includes a head 20 , a flange 22 and a threaded shank 24 . Head 20 may be suitably shaped or configured to be engaged by a tool or implement to thereby rotate. Accordingly, head 20 may be configured to receive a wrench, socket, screwdriver, or other suitable implement or tool for mechanical or manual rotation in comple...

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PUM

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Abstract

A threaded fastener (10) useful for fastening soft materials over an extended period of time includes a washer (16) having outwardly extending arms (46) received in axially extending channels (52) inan object (60) to be fastened, and a bolt (12) extending through the washer, the bolt having a head including a projection (26) engaging a locking feature (38,40) on the washer to resist relative rotation between the washer and the bolt in a fastened assembly.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 194,994, filed July 21, 2015. technical field [0003] The present invention relates generally to threaded fasteners, and more particularly, to threaded fasteners for fastening soft materials over extended periods of time. Background technique [0004] Many types of threaded fasteners are well known. In simple nut and bolt fastening systems, it is sometimes difficult to maintain a desired clamp load over extended periods of time. Over time, elongation, deformation, or other changes in the engaging threads of the nut and bolt can lead to loosening of the fastened connection. Further difficulties are encountered when threaded fasteners are used to join relatively soft materials such as plastics. Many plastics do not require high clamp loads to stay in place. However, metal threaded fasteners, for example, require sufficient clamping load betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/02F16B39/24F16B41/00F16B43/00
CPCF16B19/02F16B39/24F16B41/002F16B43/00F16B39/26
Inventor 纳尔逊·桑托斯布鲁诺·达罗查阿迪·什组科沃斯基
Owner ILLINOIS TOOL WORKS INC