Electric device

Abstract

An electric device includes a plurality of chargable secondary batteries (39), a casing (31) for accommodation of the secondary batteries (39), and a label (7). The casing (31) accommodates electronic components. The label (7) is attached on the surface of the casing. A label attachment area (8) is arranged on the surface of the casing. The label (7) is attached onto the label attachment area (8). The label attachment area (8) is formed in a substantially flat surface, and has a plurality of grooves (9). The grooves (9) are uniformly distributed throughout the flat surface. The grooves intersect with each other at least at one point of each of the grooves. The adhesive strength can be kept by the flat surface arranged over substantially the whole of the label attachment area. Air can flow through the grooves uniformly distributed in the flat surface. Bulge or wrinkles of the label can be reduced which are produced by air bubbles.

Description

technical field [0001] The present invention relates to an electric device that is detachably attached to an electric device such as an electric tool and supplies electric power. Background technique [0002] With regard to electrical equipment such as electric tools, by detachably attaching a battery pack with a built-in rechargeable secondary battery to the main body of the electrical equipment, it can be conveniently used in a construction site, etc. in a cordless manner. . In addition, by detaching the battery pack from the main body of the electrical equipment and placing the detached battery pack on the charger, it can be charged and reused. [0003] A label 7 on which information such as rating information and precautions of the battery pack is described is attached to the battery pack. The label is formed in a sheet shape, and is attached to a label attachment area provided on the case surface of the battery pack with a paste applied on the reverse side. In order ...

AI Technical Summary

Problems solved by technology

However, in this structure, since the sticking surface is limited to the periphery of the label 97, the central part tends to float, so there is a problem that air bubbles tend to accumulate on the contrary.

[0006] In addition, as another method, it is also conceivable to form the paste applied on the reverse side of the label into a lattice pattern to partially float the label and discharge air bubbles, but in this method, the lattice pattern of the paste The pattern is transferred to the surface side of the label, causing a problem of poor aesthetics

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