| 摘要 |
<p>The first part (9a) of the casing (9a, 9b) contains individual functional components, e.g. electronics and a switch. The second part of the casing partly-surrounds the first, forming at least some of its visible surface area. The first part (9a) is a fully-functional container with a sealed interior holding all components. It is cup-shaped with an opening on one side. This is closed by a push-in section. The second part of the casing is a shell which snaps onto the first part. The second part has upper and lower shells with a cover. The catch comprises a groove and projection working together. The groove is on the upper and/or lower shell, the projection being on the first part of the casing. This also carries a fixing section with a corresponding fixing groove on the upper and/or lower shell. The upper and/or lower shell is hung in the fixing section by the groove, and then with the help of the catch it is positioned and interlocked. The upper and/or lower shells are overlapped and secured by the attached cover. The electronics are situated in the interior of the first part of the casing, on a circuit board. The push-in section is formed as a battery holder. A lip on the push-in section seals the interior of the casing. Preferably the push-in section is merely pre-fixed in the opening; on attachment of the cover, the push-in section and the upper and/or lower shells interlock together. Further mechanical details are elaborated. Hard and soft plastics are used in the construction. Manufacture is by two-component injection molding. Further details in accordance with the foregoing principles are provided.</p> |
