Abstract: An anti-disassembly mechanism for an electronic device includes a hollow base, a fastening element, an ejection element, and an unlocking bolt. The fastening element is movably disposed in the hollow base. The ejection element is movably disposed in the fastening element, and includes an elastic arm. The unlocking bolt includes an unlocking rod movably located in the ejection element and the fastening element; and a buckle disposed on an upper portion of the unlocking rod. The elastic arm abuts the buckle when the buckle is on the elastic arm. The fastening screw extends through the hollow base, and includes a one-way inner ratchet and a one-way outer ratchet. When the electronic device is fastened by the anti-disassembly mechanism, the one-way outer ratchet is rotated by the fastening element. When the electronic device is opened, the one-way inner ratchet is rotated by the unlocking bolt.

Abstract: An electronic device with an anti-disassembly mechanism and the operation method thereof are provided. The electronic device includes a first housing, and a second housing contacting the first housing. A hollow base is affixed to the first housing. A fastening element is movably disposed in the hollow base. An ejection element is movably disposed in the fastening element. An unlocking bolt is movably disposed in the ejection element and the fastening element. A fastening screw extends through the hollow base, and includes a one-way inner ratchet and a one-way outer ratchet. When the fastening screw is fastened to the second housing, the fastening element rotates the one-way outer ratchet in a fastening rotation direction. When the fastening screw is detached from the second housing, the unlocking bolt is rotates in the one-way inner ratchet in an unlocking rotation direction.

Abstract: An electronic device with an anti-disassembly mechanism and the operation method thereof are provided. The electronic device includes a first housing, and a second housing contacting the first housing. A hollow base is affixed to the first housing. A fastening element is movably disposed in the hollow base. An ejection element is movably disposed in the fastening element. An unlocking bolt is movably disposed in the ejection element and the fastening element. A fastening screw extends through the hollow base, and includes a one-way inner ratchet and a one-way outer ratchet. When the fastening screw is fastened to the second housing, the fastening element rotates the one-way outer ratchet in a fastening rotation direction. When the fastening screw is detached from the second housing, the unlocking bolt is rotates in the one-way inner ratchet in an unlocking rotation direction.

Abstract: A coolant through spindle device is disclosed, including a rotating joint member secured to the rear end of the spindle for conducting coolant into the spindle, the coolant being conducted through a separate coolant passage inside the spindle to the nozzles formed on a cutting tool to be sprayed out thereof so as to fully cool down and lubricate the cutting point thereof, increase machining precision and cutting rate, and prolong service life of the cutting tool. Moreover, by using a switching collar to provide separated coolant passage and pressurized air passage, no residual coolant can follow the pressurized air jet into the tapper hole of the spindle to contaminate the tapper hole.