JPH0137802B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a hook ceiling used for connecting a power source to a lighting device or the like.

[Prior art]

Regardless of whether it is a cord-hanging type or a ceiling-mounted type, hook ceilings have become popular in recent years because they are easy to install and can be connected to a power source simply by hooking the hook ceiling cap onto the hook ceiling body. ing.

Figure 1 shows a ceiling-mounted fluorescent light fixture using a conventional hanging ceiling, for example, for three straight tube fluorescent lamps, where 1 is the ceiling and 2 is the hanging ceiling body attached to the ceiling 1. , 3 is ceiling 1
4 is three straight tube fluorescent lamps, 5 is a translucent cover, 6 is a hook ceiling cap connected to the hook ceiling body 2, and 7 is an opening connected to the hook ceiling cap 6. This is the departure line.

The conventional hook ceiling cap 6 used for such lighting equipment was developed and widely used for power connection of cord hanging type lighting equipment, and is shown for example in Japanese Utility Model Publication No. 52-9266. It was constructed as shown in Figures 2 to 4.
That is, in the figure, 8 is a hook ceiling main body (hereinafter simply referred to as the main body), 9 is a lead wire outlet provided at the bottom of the central part of the main body 8, 10 is a pair of hook fittings attached to the main body 8, and 11 is a screw terminal provided at the base of the hook 10, and the main body 8 connects the tension stop device 15, which is composed of a round cord inclusion 12 which is the outlet wire 7, a ring 13, and a cover 14, to the outlet 9. It requires a depth that can be engaged with the surrounding area, and a depth that does not prevent the terminal screw of the screw terminal 11 or the wire core 16 of the round cord from protruding from the top surface of the main body 8 and interfering with fitting to the hook sealing body. required.

Therefore, the above-mentioned hook ceiling,
When used in a ceiling-mounted lighting fixture for an odd number of lights, as shown in Figure 1, which is placed directly above fluorescent lamps, the hanging ceiling cap is thick and the electric wires protrude downward, making the lighting fixture thin. The drawback was that it was difficult to formalize.

[Summary of the invention]

In this invention, an output wire outlet is formed on the side of the main body, and the lower side of the hook is bent, and a mounting part that is fixed to the main body and a mounting part that is closer to the bottom side of the main body than this mounting part are formed. A pair of hanging metal fittings are formed with a lead wire connection part bent into a shape, one end of the lead wire is connected to the lead wire connection part, and the other end is led out from the lead wire outlet. This eliminates the drawbacks, prevents the connection point between the hook fitting and the lead wire from protruding beyond the opening surface of the main body, significantly reduces the thickness, and creates a hook ceiling that is especially suitable for ceiling-mounted lighting equipment. [Embodiment of the Invention] Figures 5 to 10 show an embodiment of the present invention, in which 20 is a bottomed box-shaped main body, 21 is this main body 2;
0 is the bottom surface, 22 is the longitudinal side wall of the main body 20, 23
Reference numeral 24 indicates a side wall in the lateral direction of the main body 20, and 24 indicates a lead wire outlet bored from the bottom surface 21 to the side wall 22 in the longitudinal direction. Width dimension W and height dimension H of this outlet 24
The relationship is formed as W>H. Reference numeral 50 denotes a plurality of protrusions provided on the inner surface of the bottom surface 21 of the main body 20, and the longitudinal side walls 22 on both sides of the outlet 24.
A guide protrusion 25 formed on the inside of the guide protrusion 25, a support portion 26 provided from the tip of one guide protrusion 25 at right angles to the guide protrusion, a guide protrusion 27 provided at a position facing the other guide protrusion 25, It consists of a locking protrusion 28 provided on the side of the support portion 26 and a locking protrusion 29 provided on the side of the guide protrusion 27. 30 is a locking protrusion 28 and a locking protrusion 2
Longitudinal side walls 2 facing each other at the tips of 9.
These are two locking portions provided so as to face each other.
Reference numeral 31 denotes two guide protrusions provided on the outer sides of the locking protrusions 28 and 29, respectively. Reference numeral 32 denotes a pair of hooks made of a conductive material, which are fixed to the main body 20 so as to face each other at a predetermined angle with the longitudinal side wall 22 of the main body 20. Reference numeral 33 denotes a hook formed at the tip of the hook 32 in a conventional manner so as to protrude from the upper surface of the main body 20, and 34 is a terminal portion formed by bending the lower end of the hook 32. This terminal portion 34 includes a mounting portion 40 fixed to the upper surface of a thick portion 38 formed on the inner surface side of the bottom surface 21 of the main body with a mounting screw 35, and a distal end side of the mounting portion 40.
It consists of a lead wire connecting portion 41 bent toward a space 39 formed between the upper surface of the thick portion 38 and the bottom surface 21 of the main body. Note that 42 is an output wire insertion hole bored in the center of the output wire connection portion 41, and 43 is an output wire insertion hole formed at the boundary between the output wire connection portion 41 and the mounting portion 40. This is a constricted portion that is narrower than the width of the attachment portion 40. 36 is
A lead wire such as a flat vinyl cord specified in JISC3306 is inserted into the outlet 24, and one separated wire core 37 is entangled with the support portion 26 so as to surround the guide protrusion 25 and the support portion 26. It is bent and further press-fitted between the locking part 30 and the bottom surface 21 to prevent it from coming off upwards by the locking part 30, and is twisted around the locking protrusion 28 and bent, so that one of the hooks is bent. It is connected to the terminal portion 34 of the metal fitting 32 by soldering. The other wire core 37 is guided by the guide protrusion 25 and the guide protrusion 27, and is guided from the locking part 30 to the locking part 3.
0 and the bottom surface 21, and is prevented from coming off upward by the locking portion 30, and the locking protrusion 29,
It is twisted and bent so that the winding direction is the same as that of the one wire core 37, and is connected to the terminal portion 34 of the other hooking metal fitting 32 by soldering. The opposite side of the outlet line 36 is connected to the outlet 24 of the main body 20.
The direction in which the wire cores 37, 37 are lined up is parallel to the upper opening surface of the main body 20, and is led out in a direction substantially perpendicular to the direction in which the hook 32 is protruded.

In the hook ceiling configured as described above, the outlet wire connecting portion 4 is formed by bending one end of the outlet wire 36 further downward from the attachment portion 40 of the hook fitting 32.
1 and the other end led out from the outlet 24 of the main body 20, the space 39 between the downwardly bent lead wire connection part 41 and the upper surface of the main body 20 can be effectively used for soldering. In other words, since the solder portion filled with solder can be accommodated in the space 39 without impairing the workability of the soldering operation, the hanging sealing cap main body 20 can be made significantly thinner. Note that even if a connection method other than soldering such as spot welding is used, the end of the lead wire 36 can be connected to the space 39.
Since the main body 20 can be housed inside, the main body 20 can be made thinner in the same way as in the case of soldering.

Further, in the above embodiment, the lead wire 36 is connected to the main body 20.
Since the wire is wired so that the part accommodated in the main body 20 is parallel to the opening surface of the main body 20, the height of the main body 20 can be approximated to the outer diameter of the lead wire 36.
This has an advantageous effect on thinning. In addition, since the other end of the lead wire 36 is led out from the lead wire outlet 24 provided on the side of the main body 20, the lead wire 36 can be easily exited when used in a ceiling-mounted fluorescent light fixture as shown in FIG. Since the line 36 is led out parallel to the ceiling, the distance between the fluorescent lamp 4 and the ceiling 1 can be significantly reduced.

In addition, in the above embodiment, since the locking portion 30 prevents the lead wire 36 from lifting up, the lead wire 36 can be disposed in close contact with the bottom surface 21, so that it is possible to make the lead wire 36 thinner. Even when a pulling force or a pushing force is applied to the wire 36, the lead wire 36 does not rise and protrude from the upper surface of the main body 20, thereby preventing the connection to the hook ceiling body.

In addition, in the above embodiment, the constriction 43 formed at the boundary between the attachment part 40 of the hook 22 and the lead wire connection part 41 becomes a "high resistance" part of heat conduction, so during soldering work. Output wire connection part 41
Temperature rise is accelerated and workability is improved. Moreover, since the constricted portion 43 is narrow in width and weak, it can be easily deformed toward the bottom surface 21 side of the main body by pressing strongly with a soldering iron during soldering work, and the formability of the hook 32 will not be impaired. do not have.

Further, in the above embodiment, since the hole 42 is provided in the center of the lead wire connection part 41 of the hooking fitting 32, when the tip of the lead wire 36 is inserted and soldered, the lead wire 36 is temporarily fixed. The soldering work can be performed easily, and the solder wire 3 also flows through the solder hole 42 to the back side of the lead wire connection part 41.
6 can be securely fixed, and the solder bulge can be reduced, contributing to making the main body 20 thinner.
However, when a screw is used to connect the lead wire 36 and the lead wire connection part 41, the thickness of the screw head and the lead wire interposed between the screw head and the lead wire connection part 41 are Since the dimension including the thickness of 36 becomes the height of the lead wire connection point, the height is much higher than that of a connection made by soldering, which poses a problem in making the main body 20 thinner.

Further, in the embodiment described above, since the lead wire 36 is a two-core parallel lead wire and the line direction is parallel to the opening surface of the main body 20, the height H of the lead wire outlet 24 can be reduced. It also prevents the tip of the lead wire 36 housed in the main body 20 and wound around the locking protrusions 28 and 29 from lifting up. Moreover, since the crotch dimension of the lead wire 36 (the length of the separated part when the respective wire cores 37 at the tips of the two-core parallel lead wire 36 are separated from each other) is made the same, the cutting process of the lead wire 36 is facilitated. Make it. Furthermore, the locking protrusion 28, 2 at the crotch part
Since the directions of winding around 9 are made the same, it is possible to make the above-mentioned crotch dimensions the same.

Further, in the above embodiment, the width W of the lead wire outlet 24 is
Since the relationship between and the height H is W>H, the direction in which the core wires 37 of the two-core parallel lead wire 36 are arranged can be easily regulated to be parallel to the opening surface of the main body 1.

Note that FIG. 11 shows another embodiment of this invention,
The outlet 24 is provided in the longitudinal side wall 22, and the direction in which the lead wire 36 is led out is more reliably regulated in the direction perpendicular to the protruding direction of the hook 32.

〔Effect of the invention〕

As explained above, this invention provides an outlet for the lead wire on the side of the hook ceiling cap body, and also includes a mounting part that fixes the hook fitting to the hook ceiling cap body along the bottom surface of the main body, and Furthermore, a lead wire connection part is provided which is bent toward the bottom of the hook ceiling body, one end of the lead wire is connected to this lead wire connection part, and the other end is led out from the lead wire outlet. The connection point between the hook and the lead wire can be prevented from protruding beyond the opening surface of the main body.
The hook ceiling itself can be easily made thinner, and since the lead wire is not guided downward, the lamp can be brought very close to the hook ceiling, making it possible to reduce the thickness of direct-mounted lighting equipment, etc. It has the effect of being able to provide

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing a lighting fixture using a conventional hanging ceiling cap, and Figures 2 to 4 are diagrams showing conventional hanging ceiling caps.
The figure is a partially cutaway front view, FIG. 3 is a plan view, and FIG. 4 is an exploded perspective view. 5 to 10 are views showing one embodiment of the present invention, in which FIG. 5 is a plan view, FIGS. 6 and 7 are perspective views, and FIG.
FIGS. 9 and 10 are sectional views showing important parts. FIG. 11 is a perspective view showing another embodiment of the invention. In the figure, 20 is the hook ceiling body, 24 is the lead wire outlet, 32 is the hook fitting, 34 is the terminal portion,
36 is an output wire, 40 is a mounting portion, and 41 is an output wire connection portion. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A hook ceiling body that is attached to a fixed member such as a ceiling, and a hook ceiling cap that is electrically and mechanically connected to the hook ceiling body via a pair of hook fittings. In the hook ceiling, the hook ceiling cap has a bottomed box-shaped hook ceiling cap body with an outlet wire outlet formed on the side, and a hook ceiling cap body that is attached to the hook ceiling cap body and has one end protruding from the top surface of the hook ceiling cap body. , a pair of hook fittings whose other ends are bent along the bottom surface inside the hook ceiling cap body to form a terminal portion, and an outlet whose one end is connected to the terminal portion and whose other end is led out from the outlet wire outlet. The terminal portion of the hook fitting has a mounting portion that is fixed to the hook ceiling cap body, and an output wire connection portion that is bent so as to be closer to the bottom side of the main body than the attachment portion. A hook ceiling characterized by comprising. 2. The hook ceiling according to claim 1, characterized in that a constricted portion is provided at the boundary between the output wire connection portion and the attachment portion. 3. The hook ceiling according to claim 1, wherein the lead wire connection portion has a hole in the center. 4. The hook ceiling according to any one of claims 1 to 3, wherein the lead wire is directly soldered to the lead wire connection portion.