Crash box
US7188877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2006 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | May 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/75
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A crash box for a motor vehicle includes an attachment portion which engages a longitudinal member of the motor vehicle and is secured thereto by at least one screw bolt which extends through a spacer sleeve. The spacer sleeve is securely fixed to the attachment portion and has two threaded portions of opposite pitch. Inserted from opposite sides of the spacer sleeve are tolerance compensating bolts, which are each provided with an inner rotary catch for interaction with an outer thread of the screw bolt. When the screw bolt is screwed in, the tolerance compensating bolts are thus moved apart until abutting against opposite inside wall surfaces of the longitudinal member. The screw bolt engages hereby a nut on an outside of the longitudinal member so that the attachment portion is now held without clearance on the longitudinal member by a head portion of the screw bolt and one of the tolerance compensating bolts, and by the other one of the tolerance compensating bolts and the nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.