Browse Prior Art Database

Anti-tamper push fit rivet

IP.com Disclosure Number: IPCOM000127634D
Published in the IP.com Journal: Volume 5 Issue 9B (2005-10-10)
Included in the Prior Art Database: 2005-Oct-10
Document File: 2 page(s) / 138K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Variable Speed Drives (VSD) usually consist of electrical/ electronic components enclosed by plastic and/ or metal enclosure. As part of the warranty agreement, the end user should not open the enclosure and interfere with the electronics. Any area of the VSD the user requires access to (for probing etc.) will be provided for in the design of the enclosure. The enclosure is required to be opened by Siemens qualified, authorized staff for repair purposes. Therefore a component is required that has to be permanently destroyed or deformed to gain entry to the enclosure, and therefore it is immediately obvious that the end user has opened the enclosure. The component must be strong enough not to be destroyed or damaged during normal operation/ installation, but easily removed by authorized persons. On other manufacturer’s products the most common form of anti-tamper detection is via special anti-tamper labels which stick to two halves of an enclosure and when the two halves are opened the label rips in half revealing an internal label with “void” or some such description. Marketing teams do not want us to use such a label.

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Anti-tamper push fit rivet

Idea: Lee Edwards, GB-Congleton; Yoni Shevloff, GB-Congleton; Lyndon Shenton, GB-Congleton

Variable Speed Drives (VSD) usually consist of electrical/ electronic components enclosed by plastic and/ or metal enclosure.

As part of the warranty agreement, the end user should not open the enclosure and interfere with the electronics. Any area of the VSD the user requires access to (for probing etc.) will be provided for in the design of the enclosure.

The enclosure is required to be opened by Siemens qualified, authorized staff for repair purposes. Therefore a component is required that has to be permanently destroyed or deformed to gain entry to the enclosure, and therefore it is immediately obvious that the end user has opened the enclosure. The component must be strong enough not to be destroyed or damaged during normal operation/ installation, but easily removed by authorized persons.

On other manufacturer's products the most common form of anti-tamper detection is via special anti- tamper labels which stick to two halves of an enclosure and when the two halves are opened the label rips in half revealing an internal label with "void" or some such description. Marketing teams do not want us to use such a label.

Screws are often used to attach two halves on the enclosure, but these can be removed and replaced by the end user with no obvious signs that the enclosure has been opened.

The Anti-tamper rivet is a plastic component which looks similar to a screw. There is a shaft which has "fir tree" on it which makes the rivet a push fit into a hole. Once the...