Electronic apparatus having circuit board

• US 8,582,310 B2
• Filed: 09/21/2011
• Issued: 11/12/2013
• Est. Priority Date: 06/12/2007
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Monda, Tomoko, Mukai, Minoru
• Primary Examiner(s): Dinh, Tuan T
• Assistant Examiner(s): SAWYER, STEVEN T
• Application Number:
  US13/137,917
• Publication Number:
  US 20120008291A1
• Time in Patent Office: 783 Days
• Field of Search: None
• US Class Current: 361/752
• CPC Class Codes: G01R 31/2812 Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance of connections G01R31/66
• CPC Class Codes: G01R 31/70 Testing of connections between components and printed circuit boards G01R31/68 takes precedence
• CPC Class Codes: H05K 1/0268 for electrical inspection or testing
• CPC Class Codes: H05K 2201/10409 Screws
• CPC Class Codes: H05K 2203/163 Monitoring a manufacturing process
• CPC Class Codes: H05K 3/341 Surface mounted components
• CPC Class Codes: H05K 7/142 Spacers not being card guides

Abstract

An electronic apparatus includes: a circuit board that is disposed inside a case that is formed by coupling first and second case halves, the circuit board being interposed between first and second boss portions; first and second conductive members that are disposed between a gap formed between the first boss portion and the circuit board; a third conductive member that is disposed between the first boss portion and the first conductive member and between the first boss portion and the second conductive member to electrically connect the first conductive member to the second conductive member; and a measurement circuit that is electrically connected to a first wiring and a second wiring, which are respectively connected to the first conductive member and the second conductive member, and measures an electrical characteristic value of at least one of the first conductive member and the second conductive member.

Claims

1. An electronic apparatus comprising:

a first case half that is provided with a first boss portion;

a second case half that is provided with a second boss portion, the second case half being coupled with the first case half to form a case enclosing a space by joining the first boss portion and the second boss portion;

a circuit board that is disposed inside the space enclosed by the case, the circuit board being interposed between the first boss portion and the second boss portion;

a first conductive member that is disposed in a gap formed between an end surface of the first boss portion and a surface of the circuit board, the end surface of the first boss portion and the surface of the circuit board being substantially parallel to each other;

a second conductive member that is disposed between the first boss portion and the first conductive member to be electrically connected with the first conductive member;

a first wiring and a second wiring that are formed on the circuit board, the first wiring and the second wiring being electrically connected respectively to the first conductive member and the second conductive member; and

a measurement circuit that is electrically connected to the first wiring and the second wiring and measures an electrical characteristic value of the first conductive member.

2. The apparatus according to claim 1, wherein the first conductive member is formed of a solder material.

3. The apparatus according to claim 1, wherein the measurement circuit measures, as the electrical characteristic value, at least one of a resistance value, a voltage value, and a current value of the first conductive member.

4. The apparatus according to claim 1 further comprising a functional circuit that outputs a signal when the electrical characteristic value measured by the measurement circuit is beyond a predetermined level.

5. The apparatus according to claim 1 further comprising a functional circuit that outputs a signal when a tendency of variation in the electrical characteristic value is changed.