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US-20260128245-A1 - BREAKER DEVICE

US20260128245A1US 20260128245 A1US20260128245 A1US 20260128245A1US-20260128245-A1

Abstract

This breaker device includes a resin member, an igniter, and a conductor. The resin member includes an internal space. The igniter introduces gas into the internal space. The conductor is plate-shaped and located below the igniter. The conductor includes: a first holding portion embedded in the resin member; a second holding portion embedded in the resin member; and a connecting portion connecting the first holding portion and the second holding portion. The first holding portion includes a through-hole.

Inventors

  • Shun Ito
  • Shinya Kimoto
  • Katsuya Uruma
  • Masato Nakamura

Assignees

  • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Dates

Publication Date
20260507
Application Date
20251202
Priority Date
20230426

Claims (17)

  1. 1 . A breaker device comprising: a resin member including an internal space; an igniter configured to introduce gas into the internal space; and a conductor that is plate-shaped and located below the igniter, wherein the conductor includes: a first holding portion embedded in the resin member; a second holding portion embedded in the resin member; and a connecting portion connecting the first holding portion and the second holding portion, the first holding portion includes a plurality of grooves on an upper surface or a lower surface and a depressed portion on a side surface, and the plurality of grooves and the depressed portion are embedded in the resin member.
  2. 2 . The breaker device according to claim 1 , wherein in plan view, the plurality of grooves extend in a direction perpendicular to a direction in which the conductor extends.
  3. 3 . The breaker device according to claim 1 , wherein in plan view, the plurality of grooves extend in a direction diagonally crossing a direction in which the conductor extends.
  4. 4 . The breaker device according to claim 1 , wherein in plan view, the plurality of grooves include: a first groove extending in a direction perpendicular to a direction in which the conductor extends; and a second groove extending in a direction diagonally crossing the direction in which the conductor extends.
  5. 5 . The breaker device according to claim 1 , wherein each of the plurality of grooves has a V-shaped cross-section in a direction perpendicular to the direction in which the plurality of grooves extend.
  6. 6 . The breaker device according to claim 1 , wherein the first holding portion includes a projecting portion, and the projecting portion is embedded in the resin member.
  7. 7 . The breaker device according to claim 1 , wherein the first holding portion further includes a through-hole and a first recessed area, the first recessed area is connected to the through-hole, and the first recessed area is embedded in the resin member.
  8. 8 . The breaker device according to claim 7 , wherein the first holding portion further includes a second recessed area, the first recessed area and the through-hole are located between the second recessed area and the connecting portion, and the second recessed area is embedded in the resin member.
  9. 9 . The breaker device according to claim 1 , wherein in plan view, in a direction perpendicular to a direction in which the conductor extends, a length of the first holding portion is greater than a length between a first terminal portion and a second terminal portion at a boundary line between the connecting portion and the first holding portion, and a length of the through-hole is greater than or equal to the length between the first terminal portion and the second terminal portion at the boundary line between the connecting portion and the first holding portion.
  10. 10 . The breaker device according to claim 1 , wherein the first holding portion includes a plurality of through-holes, and the through-hole is one of the plurality of through-holes.
  11. 11 . The breaker device according to claim 1 , wherein the depressed portion includes a first depressed portion depressed from the front to the back and a second depressed portion depressed from the back to the front, the plurality of grooves is located between the first depressed portion and the second depressed portion.
  12. 12 . The breaker device according to claim 11 , wherein the first depressed portion has a first end and a second end, the second depressed portion has a first end and a second end, a part of the plurality of grooves is disposed between the first end of the first depressed portion and the first end of the second depressed portion, and another part of the plurality of grooves is disposed between the second end of the first depressed portion and the second end of the second depressed portion.
  13. 13 . The breaker device according to claim 1 , wherein the conductor includes a separation groove provided between the first holding portion and the connecting portion and on at least one of an upper surface or a lower surface of the conductor, the separation groove is not embedded in the resin member.
  14. 14 . The breaker device according to claim 13 , wherein a depth of the separation groove is deeper than a depth of the plurality of grooves.
  15. 15 . The breaker device according to claim 13 , wherein the width of the conductor at the position where the depressed portion is located is larger than the width of the conductor at the position where the separation groove is located.
  16. 16 . The breaker device according to claim 1 , wherein the first holding portion includes first portion, second portion, and third portion on the upper surface or a lower surface, the first portion includes with the plurality of grooves, the second portion is not provided with the plurality of grooves, the third portion is not provided with the plurality of grooves, the first portion is located between the second portion and third portion, and the first portion, the second portion and the third portion are embedded in the resin member.
  17. 17 . A breaker device comprising: a resin member including an internal space; an igniter configured to introduce gas into the internal space; and a conductor that is plate-shaped and located below the igniter, wherein the conductor includes: a first holding portion embedded in the resin member; a second holding portion embedded in the resin member; and a connecting portion connecting the first holding portion and the second holding portion, the first holding portion includes a plurality of grooves on an upper surface or a lower surface, and the plurality of grooves are embedded in the resin member.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a Continuation Application of U.S. patent application Ser. No. 18/721,000, filed on Nov. 14, 2024, which is the U.S. National Phase under 35 U.S.C. §371 of International Patent Application No. PCT/JP2023/023282, filed on Jun. 23, 2023, which in turn claims the benefit of Japanese Patent Application No. 2023-072640, filed on Apr. 26, 2023, the entire disclosures of which Applications are incorporated by reference herein. TECHNICAL FIELD The present disclosure generally relates to breaker devices. More specifically, the present disclosure relates to a breaker device including an igniter. BACKGROUND ART Patent Literature (PTL) 1 discloses a breaker device. This breaker device includes a housing as an outer shell member, an igniter, a projectile, and a conductor. The housing includes a housing space that extends from the upper end side to the lower end side. The housing space is a space formed in a straight line so that the projectile can move. The projectile is projected along the housing space by energy received from the igniter. The conductor includes, in a portion thereof, a cutoff portion to be cut off by the projectile that moves by the energy received from the igniter. The conductor is disposed with the cut-off portion crossing the housing space. CITATION LIST Patent Literature PTL 1: Unexamined Japanese Patent Publication No. 2022-104372 SUMMARY OF INVENTION In the breaker device disclosed in PTL 1, when the cutoff portion is cut off in the state where an electric current flows to the conductor, an arc discharge may occur. Therefore, in the breaker device, a conductive gas generated by the arc discharge may leak out of the housing. If the conductive gas generated by the arc discharge leaks out of the breaker device, this may cause adverse effects such as deterioration of insulation on an external member. An object of the present disclosure is to make a conductive gas attributed to an electric arc less likely to leak out of a breaker device. A breaker device according to one aspect of the present disclosure includes a resin member, an igniter, and a conductor. The resin member includes an internal space. The igniter introduces gas into the internal space. The conductor is plate-shaped and located below the igniter. The conductor includes: a first holding portion embedded in the resin member; a second holding portion embedded in the resin member; and a connecting portion connecting the first holding portion and the second holding portion. The first holding portion includes a through-hole. According to the present disclosure, it is possible to make a conductive gas attributed to an electric arc less likely to leak out of a breaker device, which is advantageous. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view of a breaker device according to an exemplary embodiment. FIG. 2 is a front view of the breaker device. FIG. 3 is a cross-sectional view of the breaker device cut along a plane perpendicular to the X-axis. FIG. 4 is a cross-sectional view of the breaker device cut along a plane perpendicular to the Y-axis. FIG. 5 is a cross-sectional view of the breaker device cut along a plane perpendicular to the Y-axis after an interrupting operation. FIG. 6 is a perspective view of a pusher included in the breaker device. FIG. 7 is a front view of a conductor included in the breaker device. FIG. 8A is a top view of a conductor included in the breaker device. FIG. 8B is a perspective view of region E1 illustrated in FIG. 8A. FIG. 9 is a cross-sectional view of the breaker device cut along a plane perpendicular to the Z-axis. FIG. 10 is a cross-sectional view of the breaker device cut along a plane perpendicular to the Z-axis, at a level different from that in FIG. 9. FIG. 11 is a front view of main components of the breaker device. FIG. 12 is a rear view of main components of the breaker device. FIG. 13A is a top view of main components of a conductor included in a breaker device according to Variation 1. FIG. 13B is a perspective view cut along line X-X in FIG. 13A. FIG. 14 is a top view of main components of a conductor included in a breaker device according to Variation 2. FIG. 15 is a top view of main components of a conductor included in a breaker device according to Variation 3. FIG. 16 is a top view of main components of a conductor included in a breaker device according to Variation 4. FIG. 17 is a top view of main components of a conductor included in a breaker device according to Variation 5. FIG. 18 is a top view of main components of a conductor included in a breaker device according to Variation 6. FIG. 19 is an enlarged cross-sectional view of main components of a breaker device according to Variation 7. FIG. 20A is a side view of a pusher included in a breaker device according to Variation 8. FIG. 20B is a bottom view of the pusher. DESCRIPTION OF EMBODIMENTS Hereinafter, breaker devices according to exemplary embodiments of the pr