Electronic control unit and protective case

• US 9,723,739 B2
• Filed: 05/16/2014
• Issued: 08/01/2017
• Est. Priority Date: 05/22/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Yokota, Masaru, Suzaki, Mitsuteru, Chitaka, Hiroki
• Primary Examiner(s): Smith, Courtney
• Assistant Examiner(s): Morrison, Rashen E
• Application Number:
  US14/892,083
• Publication Number:
  US 20160150660A1
• Time in Patent Office: 1,173 Days
• Field of Search: None
• CPC Class Codes: H05K 5/0004 comprising several parts forming a closed casing
• CPC Class Codes: H05K 5/0039 having a tubular housing wherein the PCB is inserted longitudinally
• CPC Class Codes: H05K 5/0247 Electrical details of casings, e.g. terminals, passages for cables or wiring
• CPC Class Codes: H05K 5/06 Hermetically-sealed casings specially adapted for small components H05K5/0095
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electronic control unit includes a control board, a battery pack, and a housing that accommodates the control board and the battery pack. The electronic control unit further includes a battery holder that has a bent shape and includes a bottom surface along a longitudinal direction of the battery pack, the battery holder clamping a main body of the battery pack, and a fixing frame that includes a juxtaposing and mounting part on which a plate surface of the control board and the bottom surface of the battery holder are mounted in a state of being adjacent to each other with a boundary line along the longitudinal direction therebetween, the control board and the battery holder being fixed to the juxtaposing and mounting part. The housing includes an opening portion into which the juxtaposing and mounting part of the fixing frame is inserted, and a back side holding portion that holds the juxtaposing and mounting part at an inner back side of the housing opposed to the opening portion. The fixing frame further includes a sealing front part that closes the opening portion of the housing with the juxtaposing and mounting part accommodated in the housing and that is fixed to the housing in a state of closing the opening portion.

Claims

1. An electronic control unit comprising:

a plate-shaped control board that includes an electronic control circuit mounted with electronic parts;

a long pillar-shaped battery pack that receives a backup battery capable of constantly supplying electric power to the electronic control circuit;

a housing that accommodates the control board and the battery pack;

a battery holder that has a bent shape and includes a bottom surface along a longitudinal direction of the battery pack, wherein the battery holder clamps a main body of the battery pack; and

a fixing frame that includes a juxtaposing and mounting part on which a plate surface of the control board and the bottom surface of the battery holder are mounted in a state of being adjacent to each other with a boundary line along the longitudinal direction therebetween, wherein the control board and the battery holder are fixed to the juxtaposing and mounting part, wherein;

the housing includes;

an opening portion into which the juxtaposing and mounting part of the fixing frame is inserted; and

a back side holding portion that holds the juxtaposing and mounting part at an inner back side of the housing opposed to the opening portion; and

the fixing frame further includes a sealing front part that closes the opening portion of the housing with the juxtaposing and mounting part accommodated in the housing and that is fixed to the housing in a state of closing the opening portion;

wherein

the battery holder includes a wire mounting portion on which a wire is mounted;

the wire connects together the electronic control circuit and the backup battery; and

the fixing frame includes an erect face portion that holds the wire mounting portion above a board mounting area of the juxtaposing and mounting part on which the plate surface of the control board is mounted.

2. The electronic control unit according to claim 1, wherein the sealing front part is formed integrally with the juxtaposing and mounting part so that the fixing frame has an L-shape.

3. An electronic control unit comprising:

a plate-shaped control board that includes an electronic control circuit mounted with electronic parts;

a long pillar-shaped battery pack that receives a backup battery capable of constantly supplying electric power to the electronic control circuit;

a housing that accommodates the control board and the battery pack;

a battery holder that has a bent shape and includes a bottom surface along a longitudinal direction of the battery pack, wherein the battery holder clamps a main body of the battery pack; and

a fixing frame that includes a juxtaposing and mounting part on which a plate surface of the control board and the bottom surface of the battery holder are mounted in a state of being adjacent to each other with a boundary line along the longitudinal direction therebetween, wherein the control board and the battery holder are fixed to the juxtaposing and mounting part, wherein;

the housing includes;

an opening portion into which the juxtaposing and mounting part of the fixing frame is inserted; and

a back side holding portion that holds the juxtaposing and mounting part at an inner back side of the housing opposed to the opening portion; and

the fixing frame further includes a sealing front part that closes the opening portion of the housing with the juxtaposing and mounting part accommodated in the housing and that is fixed to the housing in a state of closing the opening portion;

wherein

the sealing front part includes an opening portion through which the battery pack is inserted into the battery holder, the unit further comprising a battery fixture that is attached to a tip portion of the battery pack and that closes an opening portion of the sealing front part with the main body of the battery pack clamped by the battery holder, wherein the battery fixture includes a claw portion that is engaged with a rear surface of the opening portion of the sealing front part.

4. The electronic control unit according to claim 3, wherein the sealing front part is formed integrally with the juxtaposing and mounting part so that the fixing frame has an L-shape.