| 摘要 |
An anchor structure for a fire-proof steel frame of a ceiling speaker aims to anchor the fire-proof steel frame on a ceiling 1 . The fire-proof steel frame has a case 10 to hold a speaker. The anchor structure includes a seat 20 coupled with the case 10 . The case 10 and seat 20 have respectively a retaining member 11 and a first slot 21 that are corresponding to and engageable with each other. The seat and case are coupled with a thrusting member 12. The seat 20 is pivotally coupled with a flap 30 . The flap 30 and the seat 20 are interposed by a pressing member 22 . The flap 30 is pushed by the pressing member 22 to form an extending angle in normal conditions, and is depressible to form a closing angle. Thereby the fire-proof steel frame can be installed easily and securely on the ceiling to seal the speaker inside and provide a desired fire-proof effect. |
