MOLD STRUCTURE FOR MOLDING HOUSING, METHOD FOR MOLDING HOUSING, AND HOUSING

• US 20100270074A1
• Filed: 04/20/2010
• Published: 10/28/2010
• Est. Priority Date: 04/23/2009
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: MIYAKAWA, Tomoyuki, OHTAKA, Kazuto, YAMANASHI, Yoshinori, HOMMA, Hideki
• Granted Patent: US 8,430,662 B2
• Time in Patent Office: Days
• US Class Current: 174/520
• CPC Class Codes: B29C 45/4407 by flexible movement of undercut portions of the articles
• CPC Class Codes: H01R 13/4223 comprising integral flexible contact retaining fingers
• CPC Class Codes: H01R 43/18 for manufacturing bases or cases for contact members

Abstract

A mold for forming a housing having a lance includes a first mold and a second mold. The lance has a first projection for engaging a terminal and a second projection provided at a position nearer with an end of the lance than the first projection. The first mold includes a first member having a third projection. The second mold includes a second member and a third member. The second member has a first concave portion into which the third projection is inserted. The third member is configured to be moved with respect to the second member. The second member defines, with the first member, a first space where the housing is adapted to be formed. The third member defines, with the first member, a second space where the first projection and the second projection are adapted to be formed.

Claims

1. A mold for forming a housing having a lance, the lance having a first projection for engaging a terminal and a second projection provided at a position nearer with an end of the lance than the first projection, comprising:

a first mold including a first member having a third projection; and

a second mold including;

a second member having a first concave portion into which the third projection is inserted; and

a third member configured to be moved with respect to the second member,

wherein the second member defines, with the first member, a first space where the housing is adapted to be formed,

wherein the third member defines, with the first member, a second space where the first projection and the second projection are adapted to be formed.

2. The mold as set forth in claim 1, wherein:

the third member has a first part configured to form the first projection with the first member and a second part configured to form the second projection with the first member.

3. The mold as set forth in claim 2, wherein:

the second part is a concave part,

a shape of the concave part in a cross section is triangular, the cross section defined by a direction in which the lance is elongated and a direction in which the second projection is projected from the lance.

4. A method for molding a housing having a lance, the lance having a first projection for engaging a terminal and a second projection provided at a position nearer with an end of the lance than the first projection, comprising:

providing a mold including;

a first mold including a first member having a third projection; and

a second mold including;

a second member having a first concave portion into which the third projection is inserted; and

a third member configured to be moved with respect to the second member,

wherein the second member defines, with the first member, a first space where the housing is adapted to be formed,

wherein the third member defines, with the first member, a second space where the first projection and the second projection are adapted to be formed;

filling a material between the first mold and the second mold;

dividing the first mold and the second mold;

displacing the third member with respect to the second member, so that the lance is bent, by urged from the third member at the second projection, into a space where the third projection of the first member has occupied before the dividing; and

separating the housing from the second member in a state that the lance is bent into the space.

5. The method as set forth in claim 4, wherein:

the third member has a first part configured to form the first projection with the first member and a second part configured to form the second projection with the first member,

when the third member is displaced with respect to the second member, the second part urges the second projection so that the first part is allowed to be separated from the first projection.

6. A housing for holding a wire, comprising:

a body having an accommodating chamber configured to accommodate a terminal; and

a lance provided in the accommodating chamber, configured to prevent the terminal from disengaging with the housing and including;

an arm portion extended from the body;

a first projection provided in the arm portion and configured to engage with the terminal; and

a second projection provided in the arm portion at a position nearer to an end of the arm portion than the first projection.