US-12620792-B2 - Electrical connection box

US12620792B2US 12620792 B2US12620792 B2US 12620792B2US-12620792-B2

Abstract

An electrical connection box may include: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar. The bus bar may include a first protrusion that protrudes toward the case at a position where the bus bar is accommodated in the case. The case may include a first member constituted of resin facing the bus bar and a first hole or a first recess defined in the first member and into which the first protrusion is inserted. The bus bar may be positioned relative to the case by the first protrusion being inserted into the first hole or the first recess.

Inventors

Yoshihiko Kawasaki

Assignees

AISAN KOGYO KABUSHIKI KAISHA

Dates

Publication Date: 20260505
Application Date: 20240524
Priority Date: 20230526

Claims (4)

1 . An electrical connection box comprising: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar, wherein the bus bar comprises a first protrusion that protrudes toward the case at a position where the bus bar is accommodated in the case, the case comprises a first member constituted of resin facing the bus bar, a first hole defined in the first member and into which the first protrusion is inserted, and a second member constituted of metal located on an opposite side from the bus bar via the first member, the bus bar is positioned relative to the case by the first protrusion being inserted into the first hole, and the first protrusion is inserted into the first hole defined in the first member, and a distal end of the first protrusion comes into contact with the second member.
2 . The electrical connection box according to claim 1 , wherein the second member is electrically connected to a ground potential.
3 . An electrical connection box comprising: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar, wherein the bus bar comprises a first protrusion that protrudes toward the case at a position where the bus bar is accommodated in the case, the case comprises a first member constituted of resin facing the bus bar, a first hole or a first recess defined in the first member and into which the first protrusion is inserted, and a second protrusion disposed on the first member and that protrudes toward the bus bar at the position where the bus bar is accommodated in the case, the bus bar is positioned relative to the case by the first protrusion being inserted into the first hole or the first recess, the bus bar comprises a second hole or a second recess into which the second protrusion is inserted, and the first protrusion of the bus bar is located closer to a distal end in a longitudinal direction of the bus bar than the second protrusion of the case is.
4 . An electrical connection box comprising: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar, wherein the case comprises a protrusion that protrudes toward the bus bar at a position where the bus bar is accommodated in the case, a first member constituted of resin facing the bus bar, and a second member constituted of metal located on an opposite side from the bus bar via the first member, the bus bar comprises a hole or a recess into which the protrusion is inserted, the bus bar is positioned relative to the case by the protrusion being inserted into the hole or the recess, and the protrusion is disposed on the second member, pierces through the first member, and is inserted into the hole or the recess of the bus bar.

Description

REFERENCE TO RELATED APPLICATION This application claims priority to Japanese Patent Application No. 2023-86913 filed on May 26, 2023. The entire content of the priority application is incorporated herein by reference. BACKGROUND ART An electrical connection box is described in Japanese Patent Application Publication No. 2022-101130. The electrical connection box in Japanese Patent Application Publication No. 2022-101130 includes a bus bar-embedded substrate having a bus bar embedded therein, a case accommodating the bus bar-embedded substrate, and a heat sink member covering an opening of the case. The bus bar-embedded substrate is fixed to the heat sink member with screws. SUMMARY In the configuration of Japanese Patent Application Publication No. 2022-101130, the number of components increases because screws are required for fixing the bus bar-embedded substrate to the heat sink member. Processing for screw holes is also required. The present disclosure provides art that allows for positioning a bus bar without using screws. In a first aspect of the art disclosed herein, an electrical connection box may comprise: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar. The bus bar may comprise a first protrusion that protrudes toward the case at a position where the bus bar is accommodated in the case. The case may comprise a first member constituted of resin facing the bus bar and a first hole or a first recess defined in the first member and into which the first protrusion is inserted. The bus bar may be positioned relative to the case by the first protrusion being inserted into the first hole or the first recess. According to this configuration, the bus bar can be positioned relative to the case by the first protrusion of the bus bar being inserted into the first hole or first recess, and as such the bus bar can be positioned without using screws. In a second aspect of the art disclosed herein, in addition to the first aspect, the case may comprise a second member constituted of metal located on an opposite side from the bus bar via the first member. The first protrusion may be inserted into the first hole defined in the first member, and a distal end of the first protrusion may come into contact with the second member. According to this configuration, heat of the bus bar can be transferred to the second member constituted of metal. Due to this, the heat of the bus bar can be dissipated via the second member. In a third aspect of the art disclosed herein, in addition to the second aspect, the second member may be electrically connected to a ground potential. According to this configuration, the potential at the bus bar can be stabilized. In a fourth aspect of the art disclosed herein, in addition to the first aspect, the first protrusion may be inserted into the first hole defined in the first member, and a distal end of the first protrusion may be exposed outside the case. According to this configuration, the heat of the bus bar can be dissipated outside the case via the first protrusion. In a fifth aspect of the art disclosed herein, in addition to any of the first to fourth aspects, the case may comprise a second protrusion disposed on the first member and that protrudes toward the bus bar at the position where the bus bar is accommodated in the case. The bus bar may comprise a second hole or a second recess into which the second protrusion is inserted. The first protrusion of the bus bar may be located closer to a distal end in a longitudinal direction of the bus bar than the second protrusion of the case is. According to this configuration, since the bus bar can be positioned by the first protrusion of the bus bar and the second protrusion of the case, the bus bar can be stabilized. Also, the distal end of the bus bar in the longitudinal direction is a part which tends to generate heat for example by being coupled to an electrical apparatus or electrical component. However, according to the above configuration, the first protrusion of the bus bar is located closer to the distal end in the longitudinal direction of the bus bar than the second protrusion of the case is, and thus the heat of the bus bar can be dissipated via the first protrusion of the bus bar, as a result of which the distal end in the longitudinal direction of the bus bar can be suppressed from being excessively heated. In a sixth aspect of the art disclosed herein, in addition to any of the first to fifth aspects, the bus bar may comprise a bent portion in a plan view. The first protrusion of the bus bar may be disposed on the bent portion. According to this configuration, the bus bar can be positioned by using the bent portion as a positioning reference, thus positioning work can be easily performed. In a seventh aspect of the art disclosed herein, an electrical connection box may comprise: a bus bar constituted of metal; and a case accommodating at least a part of the bus bar. The case may compri