JPH0129829Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lead wire attachment device for an electrical device suspended from a shaft, such as a lead wire attachment device for a ceiling fan.

Fig. 1 is a vertical sectional view showing the main parts around the motor of a conventional ceiling fan. 4 is a rotor provided around the stator 3; 5 is a sheet metal member fixed to the rotor 4 by a tightening screw 6 and rotatably attached to the shaft 1 by a bearing 7; A bracket 8 is provided opposite this bracket 5 and has a tightening screw 9.
A frame made of sheet metal is fixed to the rotor 4 by a frame 10 and rotatably attached to the shaft 1 by a bearing 10; 11 is a bolt 1;
a blade attached to the bracket 5 by 2;
13 is a lead wire inserted between the tapered cutout formed in the shaft 1, the ceiling fan cutout, and the bearing 7 near the outlet of the ceiling fan 2 to supply electricity to the stator 3; 14 is the lead wire 13; This is a sheet metal clip that is fastened to the shaft, and the details are shown in Figure 2.

The ceiling fan configured as above has lead wire 1
3 rotates the rotor 4, and the bracket 5, frame 8, and blades 11 fixed thereto also rotate.

However, as shown in Fig. 2, the clip 14 for attaching the lead wire 13 to the shaft 1 has the disadvantage that it takes time to assemble because it is ring-shaped, and it is not desirable in terms of design because it protrudes outside. .

This idea was made to eliminate the drawbacks of the conventional ones, and by using coil springs instead of the conventional clips, it can be manufactured at low cost, and it also improves the ease of assembling electrical equipment such as ceiling fans. It is an object of the present invention to provide a lead wire attachment device for electrical equipment that can be improved.

In order to achieve the above object, this invention is a lead wire attachment device for an electrical device suspended by a shaft, in which the shaft is provided so as to pass through an opening provided in the electrical device, and the shaft is provided with a wire corresponding to the opening. and a tapered cutout is provided, and a lead wire provided inside the electrical equipment is inserted into the cutout and led out from the opening, and the electrical equipment has a cutout in the opening. A coil spring is provided around the shaft and has a function of pressing the lead wire inserted into the portion from the periphery against the cutout portion of the shaft,
Further, when the coil spring is forcibly compressed, a space is formed between the coil spring and the inner surface of the cutout portion, through which the lead wire can be inserted.

An embodiment of this invention will be described below with reference to the drawings. FIG. 3 is a perspective view showing a coil spring used in the lead wire attachment device of the embodiment, and FIG. 1 to 13 indicate the same or corresponding parts as in FIG. Reference numeral 16 denotes an opening provided in the ceiling surface of the electrical equipment (ceiling fan in this embodiment) 2, and in this embodiment, it is an opening provided in the center of the ceiling surface of the bracket 5. The shaft 1 is provided to pass through the center of the opening 16, and the lead wire 13 passes through the gap between the bearing 7 and a tapered cutout 1a provided in the shaft 1 corresponding to the opening 16. It is led out to the outside of the ceiling fan 2.

15 is a coil spring, which is located in the cutout part 1a of the shaft 1.
The lead wire 13 is inserted between the coil spring 15 and the shaft 1 in the vicinity of the tapered cutout 1a, and the coil spring 15 removes the cutout from the surroundings. Exclusion part 1a
It seems to be pushed to the side.

In the lead wire attachment device configured as described above, the lead wire 13 is attached by inserting the lead wire 13 into the inside of the coil spring 15 from the upper part of the shaft 1, and connecting it to the stator.

At this time, when the coil spring 15 is forcibly compressed by pressing it downward by hand, the opposing gap between the inner peripheral surface of the coil spring 15 and the shaft 1 becomes a tapered cutout as the coil spring 15 is compressed. 1
The lead wire 13 is passed through in this state because it becomes larger due to the taper of the lead wire 13, and the gap for inserting the lead wire 13 is wide.

When the coil spring 15 is decompressed after passing the lead wire 13 through it, the coil spring 15 returns to its original state by itself, but since the cutout part 1a is tapered, a part of the lead wire 13 passed through it Also shaft 1
Therefore, the cutout part 1a
At the upper part of the shaft 1, the coil spring 15 acts to tighten the lead wire 13 against the shaft 1. When the lead wire 13 is pulled upward, the coil spring 15 is pulled upward while contacting the lead wire 13, so that the tapered cutout 1
a causes the wires to be pushed outward via the lead wires 13. For this reason, the coil spring 15 tries to restore itself with its own elastic force, so the lead wire 13 is tightened more strongly. In other words, when the lead wire 13 is strongly pulled, the coil spring 15 presses the lead wire 13 so as to sink into the lead wire 13, thereby fixing the lead wire 13 more firmly to the shaft 1.

Note that the material of the coil spring 15 is not limited, and the mounting position is not limited to that of the above embodiment, but may be slightly above or below.

This idea is applicable not only to ceiling fans but also to other electrical equipment suspended from a shaft.

As described above, according to this invention, the lead wire can be attached using a simple component such as a coil spring, so it can be manufactured at low cost, and the assembly is easy to assemble because it can be easily attached. Moreover, the elastic force of the coil spring is used to hold the lead wire near the tapered cutout of the shaft, and when the lead wire is pulled in the pulling direction, the coil spring uses its own elastic force to release the tapered cutout. Since the lead wire can be more firmly pressed against the shaft by the portion, unnecessary movement of the lead wire can be prevented with a simple structure.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view showing the main parts of a conventional ceiling fan, Figure 2 A is a rear view of the clip, and B is a plan view.
C is a front view, FIG. 3 is a perspective view of a coil spring used in an embodiment of this invention, and FIG. 4 is a vertical view showing the main parts of a ceiling fan equipped with a lead wire attachment device according to an embodiment of this invention. FIG. In the figures, the same reference numerals indicate the same or equivalent parts, 1 is the shaft, 1a is a tapered cutout, 2 is a ceiling fan (electrical equipment), 3 is a stator, 4 is a
is the rotor, 5 is the bracket, 8 is the frame, 11
is a blade, 13 is a lead wire, 15 is a coil spring, 1
6 is an opening.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a lead wire attachment device for an electrical device suspended by a shaft, the shaft is provided so as to pass through an opening provided in the electrical device, and the shaft is provided with a structure corresponding to the opening. and a tapered cutout is provided, and a lead wire provided inside the electrical equipment is inserted into the cutout and led out from the opening, and the electrical equipment has a cutout in the opening. A coil spring is provided around the shaft and has the function of pressing the lead wire inserted into the shaft from the periphery against the cutout part of the shaft, and the coil spring is forcibly compressed. A lead wire attachment device for an electrical device, wherein a space is formed between the coil spring and the inner surface of the cutout portion, into which the lead wire can be inserted. (2) The lead wire attachment device for an electrical device as set forth in claim 1 of the utility model registration claim, wherein the electrical device is a ceiling fan.