CA2047349A1 - Mounting structure of rotary dimmer switch and coupling for floor lamp - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE
A rotary dimmer switch mounting structure for a floor lamp, comprising two tubes connected by a pipe connector and fastened in a floor to support a lamp, and a rotary dimmer switch received inside said pipe connector and said tubes and controlled by a revolving shaft to regulate the intensity of light produced by said lamp, wherein said pipe connector has an elongated notch longitudinally extending from either end edge thereof for receiving said revolving shaft and therefore, the caliber of said tubes can be smaller than the total height of the revolving shaft.

Description

~73~9 THE_IMPROVED MO~NTING STRUCTURE OF ROTARY DIMMF.R SWITCH
AND CO~PLING FOR FLOOR LAMP

BACKGROUND OF THE INVENTION
The present invention relates to a floor lamp rotary dimmer switch mounting structure and relates more particularly to a tubular lamp support for a floor lamp which has means to receive a rotary dimmer switch therein so that the design of the caliber of the tubular lamp support is free from the restriction of ~he total height, of the revo,lving shaft of the rotary dimmer switch.

In regular floor lamps, a rotary dimmer switch is generally fastened inside the lamp support thereof and controlled by a revolving shaft to regulate a variable resistor so as to change the intensity of light. The lamp support is generally made of tube or tubes. Thè ,cube or either of the -tubes has 'a round hole for inserting the revolving shaft of the rotary dimmer switch.l Because the revolving shaft is fixedly fastened in the variable resistor, the caliber of the tube ortubes B must be wider than the total height A of the variable resistor and the revolving shaft so that the rotary dimmer switch can be fastened inside the tube or - 2~73~9 tubes. If thinner lamp support is used for making a floor lamp, the rotary dimmer switch must be changed to foot dimmer switch which secures outside the tube.

SUMMARY OF TEIE~ INVENTION
The present invention has been accomplished to eliminate the aforesaid problems. According to the present invention, there is provided a a floor lamp rotary dimmer switch mounting structure which uses a coupling to connect two tubes together, which coupling has an elongated notch longitudinally extending from either end edge t~ereof for receiving the revolving shaft of the rotary dimmer switch which is received inside the tubes. Because of the design o~ the elongated notch on the pipe connectorr the caliber of the tubes can be smaller than the total height of the variable resistor and the revolving shaft of the rotary dimmer. .

BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 illustrates a floor lamp rotary dimmer switch mounting structure according to the prior art, Fig. 2 is an exploded perspective view of a floor lamp rotary dimmer switch mounting structure as ~0~73~9 constructed in accordance with the present invention;
Fig. 3.is a perspective assembly view of the floor la~p rotar.y dimmer switch mounting structure of Fig. 2; and S Fig. 4 illustrates a floor lamp embodying the present lnvention.

Referring to Figs. 2 and 3, therein illustrated is the preferred embodiment of -the floor lamp rotary dimmer switch mounting structure as constructed in accordance with the present invention , which is generally camprised of a pipe connector 1, two tubes 2, and a rotary dimmer switch 3. The pipe connector 1 has two outer thread portion~ 11 on the outer wall thereof at two opposite ends, and an elongated notch 12 piercing through the outer wall and - extending from either end edge thereof. The width of the elongated notch 12 is slightly larger than the outer diameter of the revolving shaft 31 of the rotary dimmer switch 3. The tubes 2 have each at least an inner thread portion 21 at one end for connecting the outer thread portions 11 of the pipe connector 1. During assembly, the rotary dimmer switch 3 is inserted through ` 2~47~4~

the pipe connector 1 with the revolving shaft 31 thereof projecting over the elongated notch 12 of the pipe connector 1, and then, the tubes 2 are respectively connected to the pipe connector 1 to receive the rotary dimmer switch 3 therein. Because the rotary dimmer switch 3 is not completely inserted inside either tube 2 and the pipe connector 1 has an elongated notch 12 for receiving the revolving shaft 31 of the rotary dimmer switch 3, the cali~er of the tubes 2 can be greatly reduced. The tubes 2 are connected in series by the pipe connector 1, forming into a lamp support for a floor lamp tsee Fig. 4). In the present preferred embodiment, the tubes 2 are connected to the pipe connector 1 through screw joint. As an alternate form of the present invention, the tubes 2 may be connected lS to the pipe connector 1 through swivel joint or any of a variety of connecting methods. Further, ~w~ or more ' tubes may be connected in ~erie~ by two or more pipe connectors to form into an extended 3ize of lamp support for a floor lamp.

Claims (3)

1. A rotary dimmer switch mounting structure for a floor lamp, comprising a pipe connector, two tubes respectively connected to said pipe connector at two opposite ends and fastened in a floor to support a lamp, and a rotary dimmer switch fastened in said pipe connector and controlled by a revolving shaft to regulate the intensity of light produced by said lamp, and characterized in that said pipe connector has an elongated notch disposed in longitudinal direction through which said revolving shaft from said rotary dimmer switch extends to the outside.

2. The rotary dimmer switch mounting structure as set forth in claim 1, wherein said two tubes are respectively connected to said pipe connector at two opposite ends through screw joint.

3. The rotary dimmer switch mounting structure as set forth in claim 1, wherein said two tubes are respectively connected to said pipe connector at two opposite ends through swivel joint.