Abstract: The present invention relates to compounds of the formula (1), to the use thereof in electroluminescent devices, and particularly organic electroluminescence devices, comprising said compounds according to the invention.

Abstract: The present invention relates to compounds of the formula (1), to the use thereof in electroluminescent devices, and particularly organic electroluminescence devices, comprising said compounds according to the invention.

Abstract: A foldable golf cart includes a top part pivotably connected to a bottom part. A handle is pivotably connected to the top portion of the top part and has a movable member which is located corresponding to the locking portion on the top of the top part. When the handle is pivoted upward, the movable member is connected to the locking portion. The top part has a slide to which two rear wheels are connected by two links. The links are connected to the top part by two connection rods. The bottom part has a support member which is connected to the handle. A connection tube is connected between the slide and the bottom part. Two front wheels are connected to the front end of the bottom part. The golf cart can be folded by two hands, and the folded golf cart stands upright.

Abstract: A folding device of the golf trolley is connected between a main frame and a front frame of the golf trolley, and includes a first connection member on the main frame and a second connection member on the front frame. The first connection member has a locking member and the second connection member has a pin which is located corresponding to the locking member. A fixing sleeve is securely mounted to the main frame. A movable sleeve is mounted to the front frame. Two links are connected between two sides of the movable sleeve and two side wheel units. A tube is pivotably connected between the fixing sleeve and the movable sleeve. A positioning member is connected to the tube and engaged with the front frame.

Abstract: A collapsible structure for golf bag cart, which comprises a coupling seat for connecting with a golf bag cart; a turning seat pivoted on one flank of the coupling seat; a wheel pivotally mounted on bottom end of the turning seat; a fixer provided on bottom end of the other flank of the coupling seat. The middle segment of the fixer is pivoted on the coupling seat and having an elastic element put thereon and the top end thereof being rested on the coupling seat so that the fixer after turning can recover to its original position. Several positioning portion and a positioning block are respectively provided on the coupling seat and the fixer, whereby the turning seat can be positioned and stops its turning. The turning seat can be rotated to dispose the wheel on its top end so that handy transportation of golf bag cart can be achieved.