Electrical Junction Box

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box preventing the erroneous assembling of a junction box even if a shape of a shield case is a square.SOLUTION: An electric connection box includes: a shield case 10 equipped with a storing space inside; a junction box 20 stored in the storing space; and a case cover 40 for covering a space of the shield case. A junction box side interlock connector 20L is provided on the junction box side, and a case cover side interlock connector 40L is provided on the case cover side. Three bolt fastening bosses 10B1, 10B2, and 10B3 are provided on the shield case side. Bolt holes 20B1, 20B2, and 20B3 with collars are provided on the junction box side so as to correspond to the positions of the bolt fastening bosses. The three bolt fastening bosses 10B1, 10B2, and 10B3 are respectively provided at asymmetrical positions in the shield case 10.

Description

technical field [0001] The present invention relates to an electrical junction box for accommodating a junction box (Junction Box) in which electrical components such as fuses and relays are installed, and particularly relates to an electrical junction box realizing optimal positioning of the junction box. Background technique [0002] Conventionally, electric vehicles including hybrid vehicles have mounted electrical junction boxes to electrically connect a storage battery, an inverter, and the like (see Patent Document 1). [0003] The electrical junction box as the object of the present invention contains: a shielding box, a junction box accommodated in the shielding box, and electrical components such as fuses and relays in the junction box and electronic components such as external batteries and inverters. In-vehicle wiring to which the device is electrically connected. [0004] 〈Existing electrical junction box〉 [0005] Figure 6 It is a perspective view of an exist...

AI Technical Summary

Problems solved by technology

However, since the bolt fastening bosses 10B at the four corners are arranged at symmetrical positions, when the junction box 20' is square when viewed from above, the fixed points at the four corners have no directionality. Even if the junction box 20' is wrongly rotated by 90 degrees or 180 degrees and accommodated in the shielding box 10', it cannot be detected, so that there may be a wrong installation of the junction box 20' in which the bolt B is tightened in this wrongly assembled state.

[0032] "Problem 2: Wasted space and increased weight"

In this case, since the bottom surface of the shielding box 10' needs to have a wall thickness greater than or equal to the tap depth of the fixing bolts, this structure has problems of waste of space and increase in weight.

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