Claims
- 1. An alkaline dry cell comprising:
a cathode and an anode, a separator placed between said cathode and said anode and an electrolyte solution that are housed inside an external can having a cylindrical shape with a bottom, and a resin sealing member and a supporting member for supporting said sealing member with the inner circumferential portion that are attached to an opening edge of the external can, wherein the opening edge of the external can is sealed by tightening the resin sealing member with the external can and the supporting member, wherein a sheet of metal plate that also serves as an anode terminal plate is used as the supporting member, wherein the metal plate comprises a terminal face having a protruding shape placed in the center and a circumferential flange face formed in a manner surrounding the terminal face when viewed in a direction vertically penetrating the terminal face, and a flat portion is formed on the inner circumferential side of the flange face, the flange face flat portion and the terminal face being set so as not to be in parallel with each other.
- 2. The alkaline dry cell according to claim 1, wherein the angle made by the terminal face of the metal plate and the flat portion of the flange face is set to not less than 4 degrees.
- 3. The alkaline dry cell according to claim 2, wherein along all the outer circumferential portion of the metal plate, as a portion for sandwiching the resin sealing member together with the external can, a curved portion, which has an average curvature radius of not more than 1 mm in a cross-section obtained when the metal plate is cut in the thickness direction through the center thereof, is installed.
- 4. An alkaline dry cell comprising:
a cathode and an anode, a separator placed between said cathode and said anode and an electrolyte solution that are housed inside an external can having a cylindrical shape with a bottom, and a resin sealing member and a supporting member for supporting said sealing member with the inner circumferential portion that are attached to an opening edge of the external can, wherein the opening edge of the external can is sealed by tightening the resin sealing member with the external can and the supporting member, wherein the thickness of a trunk portion of the external can is made thinner than 0.18 mm, and the thickness of the sealing edge portion of the external can is made 1.4 times greater than the thickness of the trunk portion, wherein a sheet of metal plate that also serves as an anode terminal plate is used as the supporting member, and wherein the metal plate comprises a terminal face having a protruding shape placed in the center and a circumferential flange face formed in a manner surrounding the terminal face when viewed in a direction vertically penetrating the terminal face, and a flat portion is formed on the inner circumferential side of the flange face, the flange face flat portion and the terminal face being set so as not to be in parallel with each other.
- 5. The alkaline dry cell according to claim 4, wherein the angle made by the terminal face of the metal plate and the flat portion of the flange face is set to not less than 4 degrees.
- 6. The alkaline dry cell according to claim 5, wherein along all the outer circumferential portion of the metal plate, as a portion for sandwiching the resin sealing member together with the external can, a curved portion, which has an average curvature radius of not more than 1 mm in a cross-section obtained when the metal plate is cut in the thickness direction through the center thereof, is installed.
Priority Claims (4)
Number |
Date |
Country |
Kind |
P2000-266336 |
Sep 2000 |
JP |
|
P2000-266337 |
Sep 2000 |
JP |
|
P2000-267701 |
Sep 2000 |
JP |
|
P2001-244779 |
Aug 2001 |
JP |
|
Parent Case Info
[0001] This application is a Divisional of co-pending application Ser. No. 09/941,564, filed on Aug. 30, 2001, and for which priority is claimed under 35 U.S.C. § 120; and this application claims priority of Application Nos. 2000-266336 filed in Japan on Sep. 1, 2000; 2000-266337 filed in Japan on Sep. 1, 2000; 2000-267701 filed in Japan on Sep. 4, 2000 and 2001-244779 filed in Japan on Aug. 10, 2001 under 35 U.S.C. § 119; the entire contents of all are hereby incorporated by reference
Divisions (1)
|
Number |
Date |
Country |
Parent |
09941564 |
Aug 2001 |
US |
Child |
10837486 |
May 2004 |
US |