US-12620791-B2 - Electrical connection box and wire harness

US12620791B2US 12620791 B2US12620791 B2US 12620791B2US-12620791-B2

Abstract

An electrical connection box includes a housing configured by a lower cover and an upper cover, a busbar, a first relay, and a second relay. The lower cover includes a busbar placed portion where the busbar is placed on one side in a stacking direction and a first relay mounted portion where the first relay is mounted on the one side in the stacking direction. The upper cover includes a second relay mounted portion that covers the one side in the stacking direction of the busbar placed on the busbar placed portion, that mounts the second relay on the one side in the stacking direction, and that is provided with an opening, and a cover portion covering the first relay and a bolt.

Inventors

Kazuki Kobayashi
Naoya Akiyama

Assignees

YAZAKI CORPORATION

Dates

Publication Date: 20260505
Application Date: 20231229
Priority Date: 20230116

Claims (4)

1 . An electrical connection box comprising: a housing configured by a lower cover and an upper cover stacked in a stacking direction; a busbar assembled to the housing and having conductivity; a first relay fastened to the busbar via a bolt and configured to be electrically connected to the busbar; and a second relay including a tab terminal protruding from a body of the second relay, the tab terminal being configured to be electrically connected to the busbar, the lower cover including a busbar placed portion and a first relay mounted portion, the busbar being placed on one side in the stacking direction at the busbar placed portion, the first relay being mounted on the one side in the stacking direction at the first relay mounted portion, and the upper cover including a second relay mounted portion and a cover portion, the second relay mounted portion covering the one side in the stacking direction of the busbar placed on the busbar placed portion, mounting the second relay on the one side in the stacking direction, and being provided with an opening, the tab terminal passing through the opening toward the busbar, the cover portion covering the first relay mounted on the first relay mounted portion and the bolt.
2 . The electrical connection box according to claim 1 , wherein the lower cover and the upper cover are provided with a plurality of fastened portions, a fixing member is fastened at each of the fastened portions, and the plurality of fastened portions are arranged, surrounding the first relay in the lower cover and surrounding the second relay in the upper cover.
3 . The electrical connection box according to claim 2 , wherein at least one of the fastened portions in the lower cover and at least one of the fastened portions in the upper cover are fastened together with the fixing member.
4 . A wire harness comprising: a routing material having conductivity; and an electrical connection box configured to be electrically connected to the routing material, the electrical connection box including: a housing configured by a lower cover and an upper cover stacked in a stacking direction; a busbar assembled to the housing and having conductivity; a first relay fastened to the busbar via a bolt and configured to be electrically connected to the busbar; and a second relay including a tab terminal protruding from a body of the second relay, the tab terminal being configured to be electrically connected to the busbar, the lower cover including a busbar placed portion and a first relay mounted portion, the busbar being placed on one side in the stacking direction at the busbar placed portion, the first relay being mounted on the one side in the stacking direction at the first relay mounted portion, and the upper cover including a second relay mounted portion and a cover portion, the second relay mounted portion covering the one side in the stacking direction of the busbar placed on the busbar placed portion, mounting the second relay on the one side in the stacking direction, and being provided with an opening, the tab terminal passing through the opening toward the busbar, the cover portion covering the first relay mounted on the first relay mounted portion and the bolt.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2023-004268 filed in Japan on Jan. 16, 2023. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection box and a wire harness. 2. Description of the Related Art As a conventional technique relating to an electrical connection box, for example, Japanese Patent Application Laid-open No. 2021-35188 discloses an electrical connection box including a housing configured by a base plate where a plurality of electronic components, such as a relay, are mounted, a lower cover covering the bottom surface side of the base plate, and an upper cover covering the top surface side of the base plate. The aforementioned electrical connection box described in Japanese Patent Application Laid-open No. 2021-35188 leaves room for further improvement in reduction in the number of components, for example. SUMMARY OF THE INVENTION In light of the foregoing, an object of the present invention is to provide an electrical connection box and a wire harness that can reduce the number of components. In order to achieve the above mentioned object, an electrical connection box according to one aspect of the present invention includes a housing configured by a lower cover and an upper cover stacked in a stacking direction; a busbar assembled to the housing and having conductivity; a first relay fastened to the busbar via a bolt and configured to be electrically connected to the busbar; and a second relay including a tab terminal protruding from a body, the tab terminal being configured to be electrically connected to the busbar, the lower cover including a busbar placed portion and a first relay mounted portion, the busbar being placed on one side in the stacking direction at the busbar placed portion, the first relay being mounted on the one side in the stacking direction at the first relay mounted portion, and the upper cover including a second relay mounted portion and a cover portion, the second relay mounted portion covering the one side in the stacking direction of the busbar placed on the busbar placed portion, mounting the second relay on the one side in the stacking direction, and being provided with an opening, the tab terminal passing through the opening toward the busbar, the cover portion covering the first relay mounted on the first relay mounted portion and the bolt. The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view in which an electrical connection box applied to a wire harness according to an embodiment is exemplified; FIG. 2 is an exploded perspective view in which the electrical connection box according to the embodiment is exemplified; FIG. 3 is an exploded perspective view in which the electrical connection box according to the embodiment is exemplified with a first relay and second relays detached; FIG. 4 is a plan view in which one side of an upper cover in a stacking direction according to the embodiment is exemplified; FIG. 5 is a plan view in which the other side of the upper cover in the stacking direction according to the embodiment is exemplified; and FIG. 6 is a plan view in which one side of a lower cover in the stacking direction according to the embodiment is exemplified. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described in detail below with reference to the drawings. Note that the following embodiments should not be construed to limit this invention. Constituents in the following embodiments include constituents that can be readily substituted by those skilled in the art or that are substantially the same. Note that, in this specification, ordinal numbers are used only to distinguish components, members, portions, positions, directions, and the like and do not indicate order or priorities. Embodiment FIG. 1 is a perspective view of an electrical connection box 1 applied to a wire harness WH according to an embodiment. The electrical connection box 1 of this embodiment illustrated in FIG. 1 is incorporated into the wire harness WH routed in a vehicle, such as an automobile. Herein, the wire harness WH is, for example, for connecting a plurality of routing materials W bundled together as an assembled component and used for power supply and signal communication to devices mounted in the vehicle by using connectors and the like to connect the devices to each other. The wire harness WH includes, for example, the conductive routing materials W and the electrical connection box 1 electrically connected to the routing materials