Abstract: The present invention discloses a case fastening device, which is applied to a case. The handle and the plate member are respectively pivotally coupled to two ends of the base by a first pivotal element and a second pivotal element, and rotatable above the base. Two ends of the metallic buckle are respectively snap-fitted to the handle and the plate member. The bayonet bolts are fixed on the plate member. While the user presses down the handle, the metallic buckle actuates the plate member to rotate above the base, and let the-bolts be inserted into the second through-hole of the base and the first through-hole of the case, whereby the bayonet bolts are mounted to the case. While the user lifts up the handle, the bolts are withdrawn from the first through-hole and the second through-hole, whereby the bolts are dismounted from the case.

Abstract: The present invention discloses a desktop case with detachable HDD frames, wherein the HDD frames are interchangeable and having installation grooves respectively accommodate different numbers of HDDs to meet various HDD configurations involving different HDD quantities and that installed in the different HDD dispositions. Different numbers of HDDs having different functions are respectively installed in the installation grooves of the HDD frames able to accommodate the corresponding numbers of HDDs. Thereby, every HDD frame is utilized efficiently. The user can further detach or interchange the HDD frames to fully utilize the space of the desktop case. Therefore, the present invention provides much flexibility for users to assemble the HDD frames and promotes the space efficiency of the desktop case.

Abstract: The present invention discloses a case fastening device, which is applied to a case. The switching member and the plate member are respectively pivotally coupled to two ends of the base by a first pivotal element and a second pivotal element, and rotatable above the base. Two ends of the metallic buckle are respectively snap-fitted to the switching member and the plate member. The bayonets are fixed on the plate member. While the user presses down the switching member, the metallic buckle actuates the plate member to rotate above the base, and let the bayonets be inserted into the second through-hole of the base and the first through-hole of the case, whereby the bayonets are mounted to the case. While the user lifts up the switching member, the bayonets are withdrawn from the first through-hole and the second through-hole, whereby the bayonets are dismounted from the case.

Abstract: The present invention discloses a desktop case with detachable HDD frames, wherein the HDD frames are interchangeable and having installation grooves respectively accommodate different numbers of HDDs to meet various HDD configurations involving different HDD quantities and that installed in the different HDD dispositions. Different numbers of HDDs having different functions are respectively installed in the installation grooves of the HDD frames able to accommodate the corresponding numbers of HDDs. Thereby, every HDD frame is utilized efficiently. The user can further detach or interchange the HDD frames to fully utilize the space of the desktop case. Therefore, the present invention provides much flexibility for users to assemble the HDD frames and promotes the space efficiency of the desktop case.

Abstract: A body sensing computer keyboard includes a trigger module defining a vibratable part and a non-vibratable part, a plurality of key buttons respectively clickable to trigger the trigger module in generating a respective signal, a displacement unit set between the trigger module and the key buttons, and a vibrator provided at the bottom side of the vibratable part of the trigger module and electrically connected to a vibration driving circuit of the trigger module for vibrating the vibratable part when one key button is clicked to trigger the trigger module.