JPS6327375Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a cover attachment/detachment device for a lighting fixture that is directly attached to a ceiling surface or suspended from a chain.

[Prior art]

Conventionally, this type of lighting equipment has been available in insect-proof and non-insect-proof types.The former, which is highly functional by preventing insects and dust from entering, has been sold at a high price, while the latter, which is a popular type, has been sold at a low price.

By the way, the difference between the insect-proof type and the non-insect-proof type is as shown in Figure 1. The non-insect-proof type has a mounting structure where the cover body B is simply hooked onto the appliance body A, while the insect-proof type has a mounting structure as shown in Figure 2. Since a structure is required in which the gap between the cover body B and the instrument body A is sealed with the packing 1, it is necessary to attach and detach the cover body B and the instrument body A by installing a cover attaching/detaching device C. The main factors behind the price difference were material costs and installation processing costs. However, packing 1, which accounts for this price difference, is actually not that expensive, and rather costs are incurred for installation processing using adhesives, etc. 68911, that is, by adopting a method in which the cover frame is devised to prevent the packing 1 from coming off as shown in Fig. 3, it has become possible to realize the packing function at low cost. Therefore, for this type of lighting equipment, if the cost of the other cover removable parts can be reduced all at once, the cost difference between the insect-proof type and the non-insect-proof type will almost disappear, and insects and dust can be removed without changing the selling price. We are now at a stage where we can offer consumers easy-to-maintain lighting fixtures that are difficult to access.

However, this cover attaching/detaching device C is an important part that prevents the cover from falling, and many patents and new proposals have been filed so far, and although it is explained with simple pictures, in reality there are many ways to ensure cover retention. This has been done using several parts and costs. For example, Jikko Sho 53-37504, that is, the second
The structure shown in the figure is the most common cover attaching/detaching device in the current market, but in practice, this part also includes a mounting base 2, a spring 3, a cover mounting bracket 4, a locking frame 5, and a spring 3 as shown in FIG. It requires a large number of parts, 14 in total: two each for the stopper 6, pushbutton spring 7, and pushbutton 8.In addition, each device itself,
A lot of cost is required to fasten and attach the cover to the cover body. Another example is the cover attaching/detaching device C shown in Figures 5 and 6, but depending on the thickness of the cover frame, there are different types of dimensions that protrude outward from the mounting plate. In addition, since the long side of the cover body B is supported at one point, the packing on both sides is uncertain, and it is expensive because it has been improved to a complicated shape with two points of support. There used to be products made by injection molding or zinc die casting, but the former disappeared due to safety concerns, while the latter did not have any safety issues, but
They have become expensive, and insect-proof and non-insect-proof types remain established in the market with a considerable price difference.

[Summary of the idea]

The present invention solves the above problem, that is, the cover attaching/detaching device C.
The aim is to reduce the cost of the device by significantly reducing the number of parts and by greatly simplifying the installation to the device body A. An embodiment of the cover attaching/detaching device of this invention will be described below.

[Example of idea]

In FIGS. 7 and 8, reference numeral 9 denotes a rectangular dish-shaped mounting plate 13 having a bent portion 10 on the lower side of the periphery, a wall portion 11 on the flat plate portion, and an overhanging portion 12 on the lower side. is the bent part 10 of this mounting plate 9
A first through hole 14 provided near the center of the wall 11 of the overhanging portion 12 connects the first through hole 13
a second through hole provided at a position facing the
Reference numeral 15 designates a spring receiving portion cut downward from the lower surface of the overhang portion 10 slightly toward the center of the second through hole 14, and these first through hole 13, second through hole 14, and spring receiving portion 15 are A similar arrangement is provided at the other end of the mounting plate 9. 4 has one end passed through the first through hole 13 and protrudes to the outside of the instrument main body A, edge portions 16 are provided at both ends, and a protrusion 1 is provided near the center.
7 is provided, and its tip is inserted into the recess 19 of a push button 18 molded from resin, and the push button 18 is connected thereto, and the other end is passed through the second through hole 14 and attached to the back side of the instrument body A. Shaft part 2 that is supported in a protruding manner
The spring holding part 21 is cut and raised downward from the approximate center of the device A, and is suspended downward from both ends of the same center to form the device main body A.
A locking portion 22 extending outward from the locking portion 22
A cover mounting bracket is provided with a pressure receiving part 23 diagonally downward and inward, and one end of the spring 3 is attached to the mounting plate 9.
The other end is held in the spring holder 15 of the cover mounting bracket 4, and is always urged outward from the instrument. 21 opens upward in a U-shaped cross section, has an upper end serving as a pressing portion 25 for pressing the pressure receiving portion 23 of the cover mounting bracket 4, and a lower surface portion serving as the locking portion 2.
A cover frame 27 is formed by extending the other end of the upper part outward, downward, and inward as an engaging part 26 that engages with 2, and 1 is a U-shaped opening part of this cover frame 24. Packing that can be attached, 28
is a cover held by the cover holding portion 27 of the cover frame 24, and the cover body B is constituted by the cover 28, the cover frame 24, and the packing 1.

Next, the operation of attaching and detaching the cover will be explained with reference to FIG. When the cover body B is pushed up toward the instrument body A, the pressing part 25 of the cover frame 24 presses the pressure receiving part 23 of the cover mounting bracket 4, compressing the spring 3, and pushing the cover mounting bracket 4 inward of the instrument body A. , and then move the locking part 2 of the cover mounting bracket 4 upwards.
2 pushes up the cover frame 24 to the position of the engagement part 26, the spring 3 is released and the engagement part 2
2 engages with the engaging portion 26 to engage and hold the cover body B. When the cover body B is to be removed, the spring 3 is compressed by pushing the push button 18 of the cover mounting bracket 4 inward, the locking portion 22 is moved inward, and the cover body B is removed.

Next, a method for attaching the cover mounting bracket 4 to the mounting plate 9 will be explained with reference to FIG. 11. First, one end of the shaft portion 17 of the cover mounting bracket 4 is inserted into the second through hole 14 of the mounting plate 9 as far as it will go, and then the other end is pushed up to the surface of the mounting plate 9 to penetrate into the first through hole 13 and protrude. The push button 18 is fixed by fitting the recess 19 of the push button 18 into the edge portion 16 and protrusion 17 provided in the cut portion, and fitting one end of the spring 3 into the spring holding portion 21 of the cover mounting bracket 4, and fixing the other end. By fitting it into the spring receiving portion 15 of the mounting plate 9, assembly is completed without any fastening work.

The cover attaching/detaching device for a lighting fixture of this invention is provided with a fixture body, a cover mounting bracket slidably engaged with both ends of the fixture body, and a cover mounting bracket provided between the cover fixture and the fixture body, a spring that biases the cover mounting bracket toward the outside of the device body;
It has a cover frame formed with an engaging part that engages with the engaging part of the cover mounting bracket, and a transparent cover held by the cover frame, and the apparatus main body is folded downward at the periphery at both ends of the cover frame. a mounting plate having a bent portion, a flat plate portion having a wall portion, and a downwardly protruding portion; a first through hole provided near the center of the bent portion of the mounting plate; The cover mounting bracket is integrally molded into a T-shape, and includes a second through hole provided in the second through hole, and a spring receiving portion cut downward from the second through hole toward the center. One end of the shaft provided on the mounting bracket passes through the first through hole and protrudes to the outside of the instrument body, a separate operation push button is provided at this one end, and the other end extends through the second through hole. A spring holding part is penetrated through the hole and protrudes from the back side of the device main body, a spring holding portion is cut downward from the approximate center of the shaft portion, and extends downward from both ends of the center to extend outward of the device main body. A locking portion is provided, a pressure receiving portion is provided diagonally downward and inward from the locking portion, and the length of the operation push button is changed depending on the thickness of the cover frame. Cover frame 2 as shown in Figure 12.
4 have different thicknesses, it is only necessary to vary the length of the push button 18, and the basic functional part can be of one type. In contrast to the 14 parts in the example of Kosho 53-37504, there are 6 springs, 4 cover mounting brackets, and 2 push buttons 18 each.
Compared to conventional cover attachment/detaching devices, it is possible to form the shape using press parts, and as mentioned above, it requires no fastening work and is easy to assemble. It is possible to achieve a dramatic cost reduction and to provide consumers with convenient insect-proof lighting fixtures that are resistant to insects and dust with almost no change in sales price.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional non-insect-proof type example, illustrating how to attach and remove the cover, Figure 2 is a cross-sectional view of a conventional insect-proof type example, and Figure 3 is a main part illustrating how to attach the packing to the cover frame. 4 is an exploded perspective view of a main part showing a conventional insect-proof type example, FIG. 5 is a sectional view of a main part showing another conventional example, FIG. 6 is a perspective view of the same, and FIG. 7 is a cross-section of the present invention. Figures 8 and 9 are perspective views of the same main parts, and Figure 10 is a perspective view of the same main parts.
The figure is a sectional view of the main part explaining the attachment and detachment of the cover, No. 11.
The figure is a sectional view of a main part explaining the assembly of the cover mounting bracket, and FIG. 12 is a sectional view of a main part explaining that the push button changes depending on the cover frame. A... Apparatus body, B... Cover body, C... Cover attachment/detaching device, 1... Packing, 3... Spring, 4
... Cover mounting bracket, 9 ... Mounting plate, 13 ... First through hole, 14 ... Second through hole, 15 ... Spring receiver, 18 ... Push button, 20 ... Shaft, 21 ...
Spring holding part, 22...Locking part, 23...Pressure receiving part,
24...cover frame, 25...pressing part, 26...engaging part, 28...cover. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] An appliance body A, a cover mounting bracket 4 slidably engaged with both ends of the appliance body A, and a cover mounting bracket 4 provided between the cover attachment bracket 4 and the appliance body A. a spring 3 that urges the cover mounting bracket 4 in an outward direction of the instrument body A; a cover frame 24 formed with an engaging portion 26 that engages with the locking portion 22 of the cover mounting bracket 4; In a cover attaching/detaching device for a lighting fixture having a transparent cover B held on a cover frame 24, the fixture main body A is provided with bent portions 10 at both ends thereof below the periphery, and a wall portion 11 is provided on the flat plate portion.
a first through hole 13 provided in the vicinity of the center of a bent portion 10 of this mounting plate 9; The second through hole 14 and the second through hole 1
The cover mounting bracket 4 is integrally molded in a T-shape as a whole, and one end of a shaft portion 20 provided on the cover mounting bracket 4 is provided with a spring receiving part 15 cut downward toward the center of the cover mounting bracket 4. It passes through the first through hole 13 and protrudes to the outside of the instrument main body A, and one end thereof is provided with a separate operation push button 18, and the other end penetrates through the second through hole 14 and protrudes to the outside of the instrument main body A. A locking part that protrudes from the back surface of the main body A, has a spring holding part 21 cut and raised downward from the substantially central part of the shaft part 20, hangs downward from both ends of the central part, and extends outward of the apparatus main body A. 22, a pressure receiving part 23 is provided diagonally downward and inward from this locking part 22, and the length of the operation push button 18 is changed depending on the thickness of the cover frame 24. Cover attachment/detachment device for lighting equipment.