Waterproof type control unit and waterproof type control unit manufacturing method

Patent metadata

Field	Value
Publication number	US-10106107-B2
Application number	US-201415513633-A
Country	US
Kind code	B2
Filing date	Nov 13, 2014
Priority date	Nov 13, 2014
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A peripheral wall includes a first peripheral wall edge portion and a second peripheral wall edge portion, which are disposed on a case member bottom surface so as to be distant from each other. A connector member main unit is disposed in a space between the first and second peripheral wall edge portions. A peripheral wall groove, which is open toward the connector member main unit, is disposed in each of the first and second peripheral wall edge portions. A bottom surface of the peripheral wall groove is inclined with respect to the case member bottom surface. A base plate groove is disposed on the bottom surface of the case member. A seal material is filled into the space formed between each of an inner surface of the peripheral wall groove and an inner surface of the base plate groove, and the connector member.

First claim

The invention claimed is:

1. A waterproof type control unit, comprising:
a case including a case assembly in which an opening is disposed, and a cover which closes the opening; and
a controller which is housed in the case, wherein
the case assembly includes a case member and a connector member which is attached to the case member,
the case member has: a base plate on which a case member bottom surface is formed; and
a peripheral wall which is fixed to the base plate and which includes a first peripheral wall edge portion and a second peripheral wall edge portion, which are disposed on the case member bottom surface so as to be distant from each other, the peripheral wall surrounding the controller from the first peripheral wall edge portion to the second peripheral wall edge portion,
the connector member includes a connector member main unit, which is disposed in a space between the first peripheral wall edge portion and the second peripheral wall edge portion,
the opening is formed by being surrounded by the peripheral wall and the connector member main unit,
a peripheral wall groove, which is open toward the connector member main unit, is disposed in each of the first peripheral wall edge portion and the second peripheral wall edge portion,
the bottom surface of the peripheral wall groove is inclined with respect to the case member bottom surface,
a base plate groove, which connects the peripheral wall groove disposed in the first peripheral wall edge portion and the peripheral wall groove disposed in the second peripheral wall edge portion, is disposed in the case member bottom surface, and
a seal material is filled into a space formed between an inner surface of the peripheral wall groove and the connector member, and a space formed between an inner surface of the base plate grove and the connector member, wherein
a seal material containing portion, which is a space open toward the cover, is disposed in an edge portion of the peripheral wall groove on the cover side, and
a region of the seal material containing portion is larger than a region of the peripheral wall groove when the first and second peripheral wall edge portions are viewed from the cover side.

2. The waterproof type control unit according to claim 1 , wherein
the connector member further includes:
a pair of tapered peripheral wall side insertion plates which protrude from the connector member main unit and are inserted into the peripheral wall grooves in accordance with the inclination of the bottom surfaces of the peripheral wall grooves; and
a base plate side insertion plate which protrudes from the connector member main unit and is inserted into the base plate groove.

3. The waterproof type control unit according to claim 1 , wherein
a pair of protective plates which protrude from the connector member main unit respectively and face outer peripheral surfaces of the first peripheral wall edge portion and the second peripheral wall edge portion via a gap, respectively, are disposed in the connector member.

4. The waterproof type control unit according to claim 1 , wherein
on each of the first peripheral wall edge portion and the second peripheral wall edge portion, a slope, which is inclined from the inner surface of the peripheral wall groove toward an interior of the case in a direction of increasing the space between each slope and the connector member, is disposed.

5. The waterproof type control unit according to claim 1 , wherein
a cover groove is disposed on the case assembly side surface of the cover, along the connector member and the peripheral wall, and
a seal material is filled into the spaces between each of the connector member and the peripheral wall, and an inner surface of the cover groove.

6. The waterproof type control unit according to claim 5 , wherein
the connector member further includes a cover side insertion plate which protrudes from the connector member main unit, and is inserted into the cover groove.

7. The waterproof type control unit according to claim 1 , wherein
a flexible resin material is disposed in the connector member, along the peripheral wall grooves and the base plate groove, respectively, and
the resin material contacts closely the inner surfaces of the peripheral wall grooves and the base plate groove.

8. The waterproof type control unit according to claim 1 , wherein
the connector member main unit is shaped to curve upward further toward the outside of the case assembly than a line connecting the first peripheral wall edge portion and the second peripheral wall edge portion, when the connector member is viewed from the cover side.

9. The waterproof type control unit according to claim 1 , wherein
materials constituting the case member, the cover, and the connector member respectively are all the same.

10. A waterproof type control unit manufacturing method for manufacturing a waterproof type control unit including a case member, a connector member, an opening, and a cover which closes the opening,
the method comprising:
a first seal material injection step of continuously injecting a seal material in a first sequence of a base plate groove and a first peripheral wall groove from an intermediate position of the base plate groove, the base plate groove being disposed in a base plate of the case member, the first peripheral wall groove being disposed in a first peripheral wall edge portion of a peripheral wall fixed to the base plate;
a second seal material injection step of continuously injecting the seal material in a second sequence of the base plate groove and a second peripheral wall groove from an intermediate position of the base plate groove, the second peripheral wall groove being disposed in a second peripheral wall edge portion of the peripheral wall;
a connector member attachment step of attaching the connector member to the case member after the first and second seal material injection steps, by disposing a connector member main unit of the connector member in a space between the first peripheral wall edge portion and the second peripheral wall edge portion; and
a cover installing step of closing the opening, which is formed by the peripheral wall and the connector member main unit, by the cover after the connector member attachment step,
wherein
a first seal material containing portion, which is a first space open toward the cover, is disposed in an edge portion of the first peripheral wall groove on the cover side,
a second seal material containing portion, which is a second space open toward the cover, is disposed in an edge portion of the second peripheral wall groove on the cover side,
a region of the first seal material containing portion is larger than a region of the first peripheral wall groove when the first peripheral wall edge portion is viewed from the cover side, and
a region of the second seal material containing portion is larger than a region of the second peripheral wall groove when the second peripheral wall edge portion is viewed from the cover side.

11. A waterproof type control unit manufacturing method for manufacturing a waterproof type control unit including a case member, a connector member, an opening, and a cover which closes the opening,
the method comprising:
a base plate groove seal material injection step of injecting a seal material into a base plate groove, the base plate groove being disposed in a base plate of the case member;
a connector member attachment step of attaching the connector member to the case member after the base plate groove seal material injection step, by disposing a connector member main unit of the connector member in a space between a first peripheral wall edge portion

Assignees

• Mitsubishi Electric Corp

Inventors

• Saki Ryoji
• Nishikawa Hideya

Classifications

• H05K5/062 Primary

  sealed by a material injected between a non-removable cover and a body, e.g. hardening in situ · CPC title

• H05K5/0017

  with operator interface units · CPC title

• H05K5/0004

  Electricity · mapped topic

• B29C45/0053

  combined with a final operation, e.g. shaping (injection-compression moulding B29C45/561) · CPC title

• B29D99/006

  Producing casings, e.g. accumulator cases · CPC title