Integrated chassis and resonance component in an electronic device

• US 5,802,188 A
• Filed: 07/24/1997
• Issued: 09/01/1998
• Est. Priority Date: 05/16/1995
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: McDonough, William J.
• Primary Examiner(s): TRAN, SINH N
• Application Number:
  US08/900,045
• Time in Patent Office: 404 Days
• Field of Search: 381/159, 381/160, 381/205, 381/154, 181/182, 181/199
• US Class Current: 381/345
• CPC Class Codes: H05K 7/1427 Housings

Abstract

An electronic device includes an electronic component and a chassis to support the electronic component. The electronic device also includes a non-supporting chassis component that is integrally formed along with and as part of the chassis. The non-supporting chassis component is functionally operable in cooperation with the electronic component to enhance performance of the electronic component. In one example, the electronic component is an electronic speaker and the non-supporting chassis component is a resonance chamber positioned adjacent to the speaker to improve the speaker'"'"'s sound qualities. The chassis and non-supporting chassis component (i.e., the resonance chamber) are integrally formed together via a single injection molding process using expanded polypropylene.

Claims

1. An electronic device comprising:

an external housing;

an electronic speaker;

an internal chassis to support the electronic speaker, the chassis being mounted within the housing;

a non-supporting chassis component integrally formed along with and as part of the chassis to define a resonance chamber, the resonance chamber having an elongated tube extending along a longitudinal axis from a proximal end positioned adjacent to the speaker to a distal end and a partial shielding wall continuing from the distal end of the tube along the longitudinal axis to shield an opening at the distal end of the tube from occlusion; and

wherein the chassis and non-supporting chassis component are integrally formed of expanded polypropylene.

2. A chassis for an electronic device having an electronic speaker, the chassis forming an internal frame structure for the electronic device and is housed within an external housing, the chassis comprising;

a frame unit to support the electronic speaker in a position that allows sound to be emitted from a front of the speaker; and

a non-supporting component integrally formed along with and as part of the frame unit to define a resonance chamber, the resonance chamber having an elongated tube extending along a longitudinal axis from a proximal end juxtaposed to the front of the speaker to a distal end and a partial shielding wall continuing from the distal end of the tube along the longitudinal axis to shield an opening at the distal end of the tube from occlusion; and

wherein the frame unit and non-supporting component are integrally formed of expanded polypropylene.

3. A resonance chamber for use with an electronic speaker in an electronic device, the electronic device having a chassis formed of expanded polypropylene with a form-fitting support sized to receive and hold the electronic speaker, the resonance chamber comprising:

a tube integrally formed of expanded polypropylene together with the chassis of the electronic device, the tube extending along a longitudinal axis from a proximal end adjacent to the form-fitting support in the chassis to a distal end; and

a partial shielding wall continuing from the distal end of the tube, along the longitudinal axis to shield an opening at the distal end of the tube from occlusion.