Abstract: The application provides a Christmas tree built-in lifting device comprising a base, a lifting device fixed on the base. The lifting device comprises an outer tube, an inner tube, a motor, a chain, a coupling, a transmission gear, a chain fixing plate, a driven gear. The Christmas tree lifting device is configured as a built-in chain lifting device, and the motor drives the chain to rotate and then drives the inner tube fixed on the chain to realize lifting. The lifting of this solution is faster and with less noise. The lower end of the built-in chain lifting device is configured as a contact to take power, and the upper end is configured as a contact to transmit power. The multi-stage lifting device can be stacked repeatedly as required, thereby making it more convenient for users to use as required, and the multi-stage lifting device is more convenient for transportation.

Abstract: A three-joint linkage lifting device with built-in chain for Christmas tree, comprising an outer tube, a middle tube, an inner tube, an upper fixing sleeve for the outer tube, an upper fixing sleeve for the middle tube, a lower fixing sleeve for the inner tube, an electric lifting assembly, and a sliding hoisting rope, wherein the Christmas tree lifting bracket is configured to be an electric two-stage lifting bracket, and the components of the Christmas tree are sleeved outside the bracket, so that the Christmas tree bracket can be lifted and lowered by pushing the screw linear pushing device of the electric lifting assembly, the sliding hoisting rope is fixed on the electric lifting assembly, and when the middle tube rises, the sliding hoisting rope is jacked up to slide and pull up the inner tube synchronously.

Abstract: A three-joint linkage lifting device with built-in chain for Christmas tree, comprising an outer tube, a middle tube, an inner tube, an upper fixing sleeve for the outer tube, an upper fixing sleeve for the middle tube, a lower fixing sleeve for the inner tube, an electric lifting assembly, and a sliding hoisting rope, wherein the Christmas tree lifting bracket is configured to be an electric two-stage lifting bracket, and the components of the Christmas tree are sleeved outside the bracket, so that the Christmas tree bracket can be lifted and lowered by pushing the screw linear pushing device of the electric lifting assembly, the sliding hoisting rope is fixed on the electric lifting assembly, and when the middle tube rises, the sliding hoisting rope is jacked up to slide and pull up the inner tube synchronously.

Abstract: A connector structure for an inner-tube decorative lamp of a Christmas tree is disclosed. The connector structure includes a male connector and a female connector. A first and a second male connector fixing plastic portion are respectively disposed on both sides of the male connector, and a male connector insertion groove and a rubber sleeve groove are defined in each of the first and second male connector fixing plastic portions. A first bolt mounting hole is defined in each of the first and second male connector fixing plastic portions. A first fixing bolt is disposed to pass through the inside of the first bolt mounting hole. A rubber sleeve is sleeved on one end of the male connector, and a first wire is connected to one end of the male connector.