JPH0241776Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a corner connection structure of a lighting fixture, which is applied to a square-shaped lighting fixture installed on a system ceiling.

[Background technology] Conventionally, in system ceilings in which rectangular ceiling materials are placed on ceiling bars assembled in a lattice pattern, downward groove-shaped unit fixture bodies are assembled in a square shape, and straight pipe pipes are installed in each unit fixture body. Luminaires containing light lamps have been proposed.

In such a lighting fixture, the structure shown in FIGS. 7 to 9 is employed as a corner connection structure between the unit fixture bodies. In the figure, 30
are a pair of downward groove-shaped unit instrument bodies connected to each other at right angles. These unit appliance bodies 30 have a notch 31 formed at the end of the side plate on the inner circumferential side, and a top plate 3
2 and 32' are mutually inserted into the notch 31 so that they overlap each other. This superimposed top plate 32,3
By connecting 2' with four connecting screws 33,
The unit instrument bodies 30 are interconnected. The lower top plate 32' has a screw hole 34 into which a connecting screw 33 is screwed.
A screw insertion hole 35 is provided in the upper top plate 32. The socket base 36 is attached to the top plate 32, 32' by a connecting screw 33 and another attachment screw 37.
38 is a socket.

However, according to this configuration, since many connecting screws 33 are used, there is a problem that it takes time and effort to connect the unit instrument bodies 30 in a square shape. In addition, a screw insertion hole 35 for the connecting screw 33 and a screw hole 3 are provided.
There is a problem in that positional accuracy is required between 4 and 4, and machining is difficult. Moreover, due to the dimensional margin between the connecting screw 33 and the screw insertion hole 34 and variations in tightening, the deviation in the directions of arrows a and b in FIG.
A gap 40 may occur between the two. Furthermore, since the socket base 36 is attached using a mounting screw 37 separate from the connecting screw 33, there are problems in that not only the number of man-hours increases but also the number of parts increases.

[Purpose of invention]

This idea allows the unit appliance bodies to be connected to each other by simply inserting them, and the socket base can be attached at the same time as the connection, simplifying assembly work and reducing assembly man-hours, and does not require special members for connection. An object of the present invention is to provide a corner connection structure for a lighting device that can reduce the number of parts and further improve accuracy.

[Disclosure of invention]

In the corner connection structure of a lighting fixture of this invention, in a corner connection structure of a lighting fixture in which each groove-shaped unit fixture body is bent and connected to each other to form a fixture body, one of the unit fixture bodies that are connected to each other is A notch is provided at the end of the side plate of the unit, the end of the other unit appliance body is inserted into this notch, the ends of the top plates of both unit appliance bodies are overlapped, and the top plate below the overlapping top plates is inserted. At the same time as forming a cut and raised piece insertion hole, a bridge-shaped cut and raised piece protruding from the cut and raised piece insertion hole is formed on the lower surface of the upper top plate, and this bridge-like cut and raised piece protrudes from the lower top plate. A socket base having a wedge piece fitted into the gap between the part and the lower top plate is arranged on the lower surface of the lower top plate.

According to the configuration of this invention, a cutting piece insertion hole is provided in the top plate of one of the unit appliance bodies that are connected to each other, and a bridge-like cutout is provided in the top plate of the other unit appliance body that protrudes from the cutting piece insertion hole. Since the wedge piece of the socket base is inserted into the gap between the bridge-like cut and raised pieces, the unit appliance bodies can be connected to each other by simply inserting the pieces. Moreover, the socket base can be attached at the same time as the connection. Therefore, the assembly work is simple and the number of assembly steps is reduced. In addition, by fitting the cut-and-raised piece insertion hole and the bridge-like cut-and-raised piece, both unit instrument bodies can be positioned, improving accuracy. Furthermore, since the wedge piece of the socket base is used for connection, and a member dedicated to connection is not required, the number of members is reduced.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 6. The corner connection structure of this lighting fixture is a corner part of a lighting fixture in which each groove-shaped unit fixture main body 1A is bent at right angles to each other and sequentially connected to form a rectangle-shaped fixture main body 1 (see Fig. 6). In the connection structure, both unit device bodies 1A are connected to each other.
A notch 3 is provided at the end of the side plate 2 on the inner peripheral side of the unit, and the ends of the other unit appliance body 1A are inserted into this notch 3, and the ends of the top plates 4, 4' of both unit appliance bodies 1A are connected. A cut and raised piece insertion hole 5 is formed in the top plate 4 below the mutually overlapping top plates 4 and 4',
A bridge-like cut piece 6 protruding from the cut-piece insertion hole 5 is formed on the lower surface of the upper top plate 4', and the portion of this bridge-like cut piece 6 protruding from the lower top plate 4 and the lower top plate A socket base 8 having a wedge piece 7 fitted into the gap between the socket base plate 4 and the socket base plate 4 is disposed on the lower surface of the lower top plate 4.

Four cut and raised piece insertion holes 5 and four bridge-like cut and raised pieces 6 are provided, and four wedge pieces 7 are also provided on the socket base 8. The socket base 8 is formed in the shape of an upwardly pointing hat, and a wedge piece 7 is provided on the outwardly facing flange. The socket base 8 has a socket mounting hole 9 in its web portion, into which a socket 10 (FIG. 4) is inserted.

FIG. 6 shows the entire lighting fixture. This lighting fixture is suspended from a ceiling slab (not shown) via hanging bolts 11, and ceiling bars 12 arranged in a grid pattern
is arranged within one grid space of . ceiling bar 12
is formed into a substantially inverted T-shaped cross section, and a ceiling material (not shown) is placed thereon. A socket 13 is provided at a corner in the instrument body 1, and the corner unit instrument body 1A
A straight tube fluorescent lamp 14 is disposed inside. 15 is an emergency light.

According to this configuration, the top plate 4 of one of the unit appliance bodies 1A that is connected to each other is provided with the cutting piece insertion hole 5, and the piece protruding from the cutting piece insertion hole 5 is provided in the top plate 4' of the other unit appliance body 1A. Since the bridge-like cut-and-raise piece 6 is provided and the wedge piece 7 of the socket base 8 is inserted into the gap between the bridge-like cut-and-raise piece 6, the unit appliance bodies 1A can be connected to each other only by insertion work. Moreover, the socket base 8 can be attached at the same time as the connection. Therefore, the assembly work is simple and the number of assembly steps is reduced. Further, by fitting the cut-and-raise piece insertion hole 5 and the bridge-like cut-and-raise piece 6, both unit instrument bodies 1A can be positioned, improving accuracy. Furthermore, since the wedge piece 7 of the socket base 8 is used for connection, and a member dedicated to connection is not required, the number of members is reduced.

In addition, in the above embodiment, four unit appliance bodies 1A are used.
Although the case has been described in which the lamps are connected in a rectangular shape, this invention can also be applied to a lighting fixture in which the fixture body 1 is composed of only two unit fixture bodies 1A.
Further, the mutual connection angle of the unit device bodies 1A does not necessarily have to be a right angle.

[Effect of idea]

In the corner connection structure of the lighting fixture of this invention, a cut-out piece insertion hole is provided in the top plate of one of the unit fixture bodies that are connected to each other, and a cut-out piece insertion hole is provided in the top plate of the other unit unit body that protrudes from the cut-out piece insertion hole. Since the wedge piece of the socket base is inserted into the gap between the bridge-like cut pieces and the wedge piece of the socket base, the unit appliance bodies can be connected to each other by simply inserting the pieces. Moreover, the socket base can be attached at the same time as the connection. Therefore, the assembly work is simple and the number of assembly steps is reduced. In addition, by fitting the cut-and-raised piece insertion hole and the bridge-like cut-and-raised piece, both unit instrument bodies can be positioned, improving accuracy. Furthermore, since the wedge piece of the socket base is used for connection, and a member dedicated to connection is not required, there is an effect that the number of members is reduced.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of this invention, Fig. 2 is a perspective view of its assembled state, Fig. 3 is a longitudinal sectional view thereof, Fig. 4 is a partially enlarged cross sectional view thereof, and Fig. 5 is a partially enlarged cross sectional view thereof. 6 is a schematic perspective view of the entire lighting device, FIG. 7 is an exploded perspective view of the conventional example, FIG. 8 is a sectional view thereof, and FIG. 9 is a perspective view of the assembled state. It is a diagram. 1... Instrument body, 1A... Unit instrument body, 2...
...Side plate, 3...Notch, 4,4'...Top plate, 5...
Cut and cut piece insertion hole, 6... Bridge-like cut piece, 7... Wedge piece, 8... Socket stand.

Claims (1)

[Scope of utility model registration request] In a corner connection structure of a lighting fixture in which a fixture body is formed by bending and connecting substantially groove-shaped unit fixture bodies to each other, a notch is provided at the end of the side plate of one of the unit fixture bodies that are connected to each other. Insert the end of the other unit appliance main body and overlap the ends of the top plates of both unit appliance bodies, form a cut-out piece insertion hole in the lower top plate of the mutually overlapping top plates, and A bridge-like cut-and-raised piece protruding from the cut-and-raised piece insertion hole is formed on the lower surface of the top plate, and a gap between a portion of the bridge-like cut-and-raised piece that projects from the lower top plate and the lower top plate. A corner connection structure for a lighting device, characterized in that a socket base having a wedge piece fitted into the socket is installed on the lower surface of the lower top plate.