JPH017929Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lighting fixture whose main body forming an outer shell is made of easily breakable ceramics, glass, or the like.

[Background Art] Fig. 7 shows a cutaway front view of a lighting fixture whose main body constituting the outer shell is made of easily breakable ceramics, glass, etc. A socket 1 for mounting a lamp such as a U-shaped fluorescent lamp is vertically provided at the bottom of the lamp. Furthermore, an electronic circuit section for lighting the lamp is housed inside the mounting section 2. Main body 3
is made of fragile ceramics, glass, etc., and is arranged below the mounting part 2 to form an outer shell. Here, the main body 3 is made of ceramic. The main body 3 has a substantially cylindrical mounting portion 8 for mounting, for example, two lamps, and an insertion hole 4 for inserting the socket 1 is formed inside the mounting portion 8.

Here, the configuration of the mounting portion 2 is as shown in FIG. 9. That is, it consists of a mounting plate 21 that is attached to the ceiling surface, a socket base 22 that is attached to the lower surface of this mounting plate 21, etc., the socket 1 is attached to the lower surface of the socket base 22, and the socket base 22 has a The upper part of the screw 6 is caulked, and the screw 6 is suspended from the main body 3 side. As shown in FIGS. 8 and 9, a rib 5 is integrally provided on the inner periphery of the upper part of the insertion hole 4 of the main body 3 and projects inward, and a ring-shaped attachment is provided on the upper and lower surfaces of the rib 5. The rib 5 is held between the upper and lower mounting brackets 7' by inserting the screw 10 into the insertion hole 11 of the mounting bracket 7' from above and screwing into the screw 10 with a nut from below. and two ring-shaped mounting brackets 7'.
is attached to the main body 3 via the ribs 5. Here, as will be described later, if the screw 10 is tightened too much, there is a risk that the rib 5 will be damaged.

Further, as shown in FIG. 7, the screw 6 hanging vertically from the mounting part 2 is inserted into the mounting hole drilled in the mounting bracket 7', and the cap nut 9 is screwed from below to attach the main body 3. It is attached to the attachment part 2 via the attachment fitting 7'. In addition, the glove 1 that covers the lamp
3 is also attached to the attachment part 8. Here, if the main body 3 made of ceramic is directly attached to the mounting portion 2 with a cap nut 9, it is dangerous because the main body 3 is made of ceramic and may crack or chip. Therefore, the main body 3 is protected by attaching it to the mounting portion 2 via the above-mentioned mounting fitting 7'.

By the way, FIG. 6 shows the process of manufacturing the ceramic main body 3. First, as shown in FIG. Next, as shown in Figure b, the soil A on the surface hardens after drying, so the unhardened soil A is poured out and then taken out from the formwork 15 as shown in Figure c, resulting in a finished product. In other words, main body 3
will be molded. Note that the wall thickness of ceramics varies depending on the drying time, and the shrinkage rate is extremely large. In this way, when the main body 3 is made of ceramic, it is difficult to accurately obtain the dimensional accuracy of the wall thickness of each part.
Therefore, the variation in wall thickness becomes considerably large. The thickness of the rib 5 to which the mounting bracket 7' is attached also varies widely, and the dimensional accuracy is not accurate. Therefore, rib 5
When tightening the mounting brackets 7' placed above and below the screws 10, the mounting brackets 7' do not bend easily because they are ring-shaped, and the mounting brackets 7' themselves have a cushioning effect. Therefore, during installation, the screws 10 had to be tightened with some care, and there was a problem in that over-tightening of the screws 10 often caused cracks or chips in the main body 3. In other words, since the conventional mounting bracket 7' is ring-shaped and does not bend, the mounting bracket 7' has no buffering effect or spring effect, and if the screw 10 or cap nut 9 is tightened a little too much, the rib 5 or the main body 3 Damage such as cracks, breaks, and chips may occur.

[Purpose of the invention] The present invention was provided in view of the above-mentioned points, and the purpose of the present invention is to prevent the main body from cracking or chipping by using the mounting bracket as a cushioning material by giving the mounting bracket a spring effect. The purpose of this project is to provide lighting equipment with

[Disclosure of invention]

Embodiments of the present invention will be described below with reference to the drawings. The structure of the entire lighting fixture is the same as the conventional one, so it will be omitted, and the mounting bracket 7, which is the gist of the present invention, will be explained. As shown in FIGS. 1 and 3, the mounting bracket 7 is formed into a substantially C-shape by cutting out a portion of a ring-shaped member. An insertion hole 11 into which the screw 10 is inserted is formed on the inner circumference side of one notched end of the mounting bracket 7, and a screw 6 from the mounting part 2 is inserted through the inner circumference side of the other end. A mounting hole 12 is bored. The insertion holes 11 and the attachment holes 12 are formed in sets of two, facing each other. Then, as shown in FIGS. 2 and 4, the mounting bracket 7
The outer peripheral edge of the body 3 is placed on the upper and lower surfaces of the rib 5 of the ceramic main body 3, the screw 10 is inserted into the insertion hole 11 of the mounting bracket 7 from above, and the screw 10 is screwed from below with, for example, a cap nut. The ribs 5 are sandwiched in a sandwich shape. In addition, a screw 6 hanging vertically from the mounting part 2
The main body 3 is inserted into the mounting hole 12 of the mounting bracket 7 and screwed in with the cap nut 9 from below.
It is attached and fixed to the attachment part 2 via.
Note that the main body 3 shown in FIG. 4 does not show the entire body, but only the main parts.

At this time, as shown in FIGS. 1 and 4, one of the insertion holes 11 and the mounting hole 12 are located on the cutout end side of the mounting bracket 7, so that the insertion hole 11
Even if the screw 10 in the mounting hole 12 is tightened or the cap nut 9 in the mounting hole 12 is tightened, the inner sides of the cutout ends of the mounting bracket 7 will bend in the direction toward each other, and a buffering effect can be obtained, preventing the main body 3 from cracking or chipping. It is something that will never happen. In other words, in the case of pottery,
There are large variations in wall thickness and dimensions, and the second
When the mounting bracket 7 is installed as shown in the figure, torque is applied to the screw 10 on one side, which may cause cracking of the ceramic body 3. However, by making the mounting bracket 7 C-shaped with a cutout, When the screw 10 is tightened as shown in FIG. 5, since the insertion hole 11 and the mounting hole 12 are located on the cutout end side,
The inner sides of the ends flex in a direction closer to each other, creating a deflection S. This deflection S provides a spring effect or a buffering effect, and as a result, even if the thickness of the rib 5 varies, Even if the screw 10 on the cutout end side of the mounting bracket 7 is tightened, the main body 3 can be prevented from cracking. In addition, the thickness and elasticity of the mounting bracket 7 must be set so that the end of the mounting bracket 7 is bent so that the rib 5 is not damaged when the screw 10 etc. is tightened on the notched end side. Of course.

In addition, in the insertion hole 11 and the mounting hole 12 located in the middle of the mounting bracket 7, tighten the screw 10 and the cap nut 9 to an extent that is not too tight. By tightening the screws 10 and cap nuts 9 as described above at step 12, the upper and lower mounting brackets 7 are attached to the ribs 5, and
The main body 3 can be reliably attached to the attachment portions 2, respectively. Note that the positions of the insertion hole 11 and the mounting hole 12 on the end side of the mounting bracket 7 are aligned with the rib 5 of the main body 3.
By arranging the upper and lower mounting brackets 7 so that they are located in the recess 3a, when the screw 10 or the cap nut 9 is tightened, the entire upper and lower ends of the mounting bracket 7 will move closer to each other. Because it flexes, it is possible to more effectively obtain a buffering effect or a spring effect when the screw 10 and cap nut 9 are tightened.
Therefore, even if the screws 10 and caps 9 on the cutout end side of the mounting bracket 7 are overtightened, the ribs 5 and the main body 3 will not be damaged, such as cracks, splits, or chips. In addition to the above-mentioned buffering effect, the cutout portion of the mounting bracket 7 can also serve as a relief for removing components such as a glow bulb. Moreover, the cutout part of the mounting bracket 7 can be used as a guide.

[Effect of idea]

As mentioned above, the present invention forms an insertion hole in the main body through which the socket is inserted, a rib is provided around the inner peripheral edge of the insertion hole, and a part of the ring shape is cut out to form a substantially C-shape. A mounting bracket is formed whose outer peripheral edge is arranged parallel to the upper and lower sides of the rib, and an insertion hole through which a screw is inserted is formed in the inner peripheral edge of one notched end of the mounting bracket. The rib is held between the upper and lower mounting brackets using the screw inserted through the mounting bracket, and a mounting hole is drilled on the inner peripheral edge of the other notched end of the mounting bracket, through which the screw hanging from the mounting part is inserted. The main body is attached to the mounting part by screwing a nut from the bottom of the mounting bracket onto the screw inserted into the mounting hole, so it is especially difficult to attach the mounting bracket to a ceramic or glass body. Although there is a large variation in wall thickness when the main body is made of ceramic,
When inserting a screw or a nut into the insertion hole or mounting hole of a nearly C-shaped mounting bracket, insert the insertion hole or mounting hole on the inner circumference side of the notched end of the mounting bracket. Because the mounting bracket is perforated, when the screw or nut is tightened, the inside of the notched end of the mounting bracket flexes toward each other, and this flexure creates a spring or cushioning effect. This has the effect that the mounting bracket can be attached to the rib, that is, the main body, by screws without causing cracks or chips. In other words, by arranging two mounting brackets in a substantially C-shape in parallel with each other through the ribs, and screwing them into the insertion holes and mounting holes on the inner peripheral edge side of the notched end, when tightening the screws, the end The inner side of the part flexes in the direction toward which it approaches, creating a spring effect or a buffering effect on the main body, thereby preventing the main body from cracking. Furthermore, the cutout portion of the mounting bracket can be effectively used as a hole for removing other parts. Further, the main body can be attached to the mounting part via the mounting part by inserting a screw hanging from the mounting part into the mounting hole of the mounting part and screwing a nut onto the screw.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a mounting bracket according to an embodiment of the present invention;
Fig. 2 is a sectional view showing the mounting state of the above, Fig. 3 is a plan view of the mounting bracket of the above, Fig. 4 is an exploded perspective view of the main parts of the above, Fig. 5 is an explanatory view of the above, and Fig. 6 a. ~c
7 is an explanatory diagram showing the process of molding the same pottery as above, FIGS. 7a and 7b are a broken front view and a side view showing the left half of the conventional example, FIG. FIG. 2 is a diagram showing an attached state of the same as above. 1...Socket, 2...Mounting part, 3...Main body,
4...Through hole, 5...Rib, 6...Screw, 7...
Mounting bracket, 10...Screw, 12...Mounting hole.

Claims (1)

[Scope of utility model registration request] There is a mounting part that is attached to the ceiling and has an electronic circuit section for lighting sockets and lamps, and a ceramic or glass part that is placed below the mounting part and covers the mounting part, and that makes up the outer shell. In the lighting equipment, an insertion hole through which the socket is inserted is formed in the main body, and a rib is provided around the inner peripheral edge of the insertion hole, and a part of the ring shape is cut out to form an approximately C shape. A mounting bracket is formed in the shape of a letter and its outer peripheral edge is arranged parallel to the upper and lower sides of the rib, and an insertion hole for inserting a screw is formed in the inner peripheral edge of one notched end of the mounting bracket. The rib is sandwiched between the upper and lower mounting brackets using the screw inserted through this insertion hole, and a mounting hole through which the screw hanging from the mounting part is inserted is drilled on the inner peripheral edge of the other notched end of the mounting bracket. and a nut is screwed from the lower surface of the mounting bracket onto the screw inserted into the mounting hole to attach the main body to the mounting part.