An improved structure of a mobile phone hand-free holder, includes a holder, an upper casing, a lower casing, a resilient locking seat and a press lever; a cross link pivoted to the center; an insertion protruding from end of the pivot to slide in a lateral slide way in the upper casing, both ends of the cross link being connected respectively to both sides of the holder; one side of the holder is serrated at the edge; the locking seat being provided by the serration to have two stoppers protruding into the serration to force the holder to only press inwardly to be held in position; an earphone socket also functioning as a switch to control transmission of an incoming call to be received by a cordless earphone or an external speaker or a car radio; the lateral displacement of the cross link in the slide way to deflect the center to hold a mobile phone with its plug socket not provided at the center.

An cellular phone holder includes a holder apparatus, a fixed apparatus, and an operating apparatus. The holder apparatus includes a main body. The fixed apparatus includes a fixed plate longitudinally disposed thereon. A teeth-formed end composed of a plurality of protruding teeth is formed on one side of the fixed plate, and the protruding teeth are upwardly inclined. The operating apparatus includes an operating element transversely disposed on the main body, and a plurality of propping teeth corresponding to the teeth-formed end are formed on the operating element, and the propping teeth are downwardly inclined, which has the stable and accurate effective, thereby accurately fastening without the shaking phenomenon.

An attachment assembly for a personal digital assistant (PDA) includes a first cover portion, a second cover portion and an attachment unit. At a front surface of the first cover portion is formed a plurality of fastening holes to adequately locate attachment arms for holding the PDA. The attachment unit includes an attachment body. A projection piece, an opened ring, a rod and a stopper piece are formed at a first side of the attachment body to mount with to a gear, a lock, a pressing button, a fastening frame, a first short resilient member and a second short resilient member. A slot is formed at a second side of the attachment body to receive the fastening frame and the long resilient member. By pressing down the pressing button, the lock, the gear and the long resilient member interact with one another to achieve the attachment of the PDA.

A supporting device for supporting objects, particularly for supprting a telephone in a vehicle, comprising a pair of clamping wall structures at least one of which is movable and has restraining means disposed thereon, and a base body supporting the clamping wall structures and including restraining means which coact with the restraining means on the or each movable clamping wall structure so as to exert upon the latter a restraining force larger than the force exerted upon the clamping wall structures by the object clamped therebetween.

An adjustable apparatus holder used in a carrier and adapted to hold a personal electronic apparatus is disclosed to include a base panel, a first side plate slidably coupled to the base panel at one side, a second side plate pivoted to the base panel at an opposite side and held in a vertical position by springs, and a locking mechanism, which locks the first side plate when the second side plate is maintained in the vertical position, or unlocks the first side plate when the user tilts the second side plate.