Chassis of a device

• US 5,682,289 A
• Filed: 09/22/1995
• Issued: 10/28/1997
• Est. Priority Date: 12/11/1991
• Status: Expired due to Term

• Current Assignee: DMT GmbH & Co. KG.
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: Haeberle, Juergen, Kopp, Siegfried, Mahn, Johannes, Schwegler, Tim
• Primary Examiner(s): Thompson, Gregory D.
• Application Number:
  US08/532,056
• Time in Patent Office: 767 Days
• Field of Search: 361/679-688, 361/690, 361/694-695, 361/714, 361/715, 361/726, 361/730, 361/732, 361/740-742, 361/759, 361/807, 361/809-811, 361/816, 361/818
• US Class Current: 361/679.33
• CPC Class Codes: G06F 1/183 Internal mounting support structures, e.g. for printed circuit boards, internal connecting means for buses G06F13/409
• CPC Class Codes: G06F 1/184 Mounting of motherboards
• CPC Class Codes: G06F 1/187 Mounting of fixed and removable disk drives
• CPC Class Codes: H05K 7/1429 for circuits carrying a CPU and adapted to receive expansion cards
• CPC Class Codes: H05K 9/005 being nesting containers

Abstract

A chassis of a device, for example an electronic device, comprises a support unit made of plastic material which carries the components of the device, such as printed circuit boards, a data storage disk, a ventilator, and a loudspeaker. The components are held in place in corresponding recesses of the chassis by a form-locking connection with the plastic material. The components are carried by the chassis without requiring any fastening elements. For assembling the device, the components are inserted into the lower part of the chassis. Thereafter, the upper part is positioned on top of the lower part. The chassis can be enclosed in a metal enclosure. The chassis is preferably manufactured by a plastic molding process. Ventilation ducts can be provided in the plastic material to ensure cooling of the components.

Claims

1. A chassis of a device, the device comprising a plurality of functionally interconnected components disposed in the chassis, the chassis comprising a support unit made of resilient material, the support unit having inner contacting surfaces forming recesses which fit the outer shapes of the components such that the components are held in the support unit by elastic and frictional forces created by the deformation of the inner contacting surfaces by an exterior surface of the components disposed in corresponding recesses.

2. A chassis of a device, the device comprising a plurality of functionally interconnected components disposed in the chassis, the chassis comprising a support unit made of deformable material, the support unit having inner contacting surfaces forming recesses, the recesses fitting the outer shape of the corresponding components such that the components are held in the support unit by elastic and frictional forces created by the substantially continuous deformation of an inner contacting surface by an exterior surface of the component disposed in a corresponding recess.

3. A chassis as in claim 2, wherein the device is an optical reflectometer, said support unit further having electrically conductive material which is sufficiently conductive to prevent electrostatic charging.

4. A chassis as in claim 2, wherein the device is a liquid chromatograph.

5. A chassis as in claim 2, wherein the deformable material has a density of about 60-80 g/l.

6. A chassis as in claim 2, wherein the deformable material is expanded polypropylene.