JPS5812334Y2 - Device to prevent hanging ceiling from falling off - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of ceiling hooks, and in particular, the hook consists of a base that is attached to the ceiling, etc. and a cover that is engaged with and attached to the base, and the cover is attached afterward.
This invention relates to a fall prevention device that prevents a cover from rotating in a direction opposite to the direction in which it is attached.

Conventionally, this type of hooking occurs due to the structure in which the hook-shaped terminal plate of the cover is rotated and engaged with the guide groove on the base side of the hook, so it could be caused by inadvertent rotation in the opposite direction. There was a risk that not only would the bond be broken and electrical contact would be poor, but the cover and eventually the lighting fixture itself would fall from a high place.

In view of the above points, this idea was developed by providing a locking rod on the base side of the ceiling, separate from the hook-shaped terminal plate, and protruding its lower end downward, and attaching it to the lighting equipment using a support such as a string. By crimping the lower surface of the cover, the locking rod is pushed upward and the upper end of the locking rod is fitted into the hook-shaped terminal plate insertion hole provided on the base side, thereby preventing the base from rotating in the opposite direction. This is to prevent the main body of the lighting fixture from falling off.

First, an outline of the conventional hook/sealing will be explained based on FIG.
The lower surface 13 of 2 has an arc-shaped guide groove 1 whose center is point symmetrical.
6.16 are bored, and locking hook insertion holes 18, 18 that bulge inward are bored at one longitudinal end of both guide grooves 16, 16.

Although not shown, a terminal plate for connection from the power source side is provided on the inside of the base 12 so as to be connected to the guide groove 16.16.

A pair of hook-shaped terminal plates 22, 22, which are joined to the inner surface of the cover 20, that is, the lower surface of the base 12, and which are to be connected to the power supply side terminal plate are fixed with screws 25 or the like.

The two hook-shaped terminal plates 22, 22 are fixed in mutually opposing positions with their center portions symmetrical, and have an inverted locking hook portion 2 at the tip.
4°24 is integrally bent and furthermore, this locking hook portion 2
4.24 is formed in a size that allows it to be inserted into the locking hook insertion hole 18.18 of the base 12 and to be able to engage with the guide groove 16.16.

Although not shown, this hook-shaped terminal plate 22.22 has a cover 2.
It is connected to a conductor on the electrical appliance side that is inserted through the cord insertion hole that penetrates the center of the cord.

Next, to explain the main points of the present invention with reference to FIGS. 1 to 4, reference numeral 26 is a locking rod, which is located close to the locking hook portion 24 of the one hook-shaped terminal plate 22 at a position opposite to the locking rod 26. is provided on the cover 20.

That is, this locking rod 26 is provided inside the cover 20 corresponding to the locking hook insertion hole 18 when the locking hook 24 and the guide groove 16 are rotationally locked.

As shown in FIG. 1, a support piece 23 is provided protruding from the side surface of the cover 20, and the upper end of the locking rod 26 is passed through the support piece 23 with a loose fit, and the lower end of the locking rod 26 is connected to the lower surface of the base 12. It penetrates the inside of the hole 27 provided in 21 and protrudes downward.

28 is a large diameter part provided in the center of the locking rod 26;
It restricts the escape upward or downward.

The flat locking rod 26 is formed so that its length in the vertical direction is larger than the height of the cover 20.

Reference numeral 30 denotes a support 30 for a hanging string 34 or hanging chain attached to the main body of the lighting device, which has an elongated rectangular shape as a whole, and has bent portions 32 and 32 for locking the hanging string 34 or the like at both ends in the longitudinal direction. It has a button in the center and a hole (not shown) into which a tube 29 protruding from the lower surface of the base 12 is fitted.

A threaded portion is provided on the outer periphery of the tubular body 29, and after the button support 30 is fitted into the tubular body 29, it is tightened with a nut 38 via a washer 36.

The hollow interior of the tube body 29 is formed as a cord insertion hole.

The support device 30, such as a button hanging cord, is not limited to the above-mentioned shape, but any means can be adopted as long as it is attached while being in contact with the base 12.

Next, to explain the operation of this embodiment, the cover 20 is inserted into the locking hook insertion hole 18 of the base 12 fixed to the ceiling etc.
Insert the locking hooks 24.24 of the hook-shaped terminal plates 22, 22, and rotate the cover 20 so that the locking hooks 24, 24 rotate toward the guide grooves 16.16. 24.24 moves along the guide groove 16°16, and this locking hook portion 24.2
4 is contacted and locked to a power supply side terminal plate (not shown) of the base 12.

In this state, the lower end of the locking rod 26 is connected to the lower surface 21 of the base 12.
Although it protrudes further downward (see Fig. 1), the tube body 29 has a support 30 such as a hanging cord protruding from the lower surface of the base 12.
When the nut 38 is tightened with a washer, the support 30 such as a hanging string is pressed against the lower surface 21 of the base 12, and the lower end 26' of the locking rod 26 is pushed upward, and the upper end of the locking rod 26 is pushed upward. It is projected and fitted into one of the locking hook insertion holes 18 (see FIG. 2).

Therefore, the rotation force in the opposite direction to the cover 20, that is, the locking hook portion 24.
Even if a force is applied in the direction of disengaging the locking rod 24 from the guide groove 16, 16, the locking rod 26 will not be rotated because it is engaged with one of the locking hook insertion holes 18.

Next, when removing this device, loosen the nut 38 and remove the support 30 such as a hanging string, and the locking rod 26 will fall downward due to its own weight, and its upper end 26'' will be inserted into the locking hook insertion hole 18.
It will escape from the inside and the engagement will be released, so if you turn the cover 20 in the opposite direction in this state, the guide grooves 16, 16 will be removed.
The locking hook portion 24.2 is released when the locking hook portion 24.2 is engaged with the locking hook portion 24.2.
4 reaches the position of the locking hook insertion holes 18, 18, the cover 2
0 is separated from the base 12.

Although not shown, a spring is interposed in the locking rod 26 so that it is constantly urged downward, so that when the support 30 such as a hanging cord is removed, the upper end 26'' of the locking rod 26 is inserted into the locking hook insertion hole. You can make sure that you escape from 18.

Further, in the above embodiment, the base 12 is box-shaped, but it may be circular, or it may be formed as a disc-shaped so-called rosette.

Furthermore, although the above description has been given of a ceiling-mounted ceiling, the present invention can also be applied to walls, pillars, floors, etc.

As explained above, according to the present invention, the hook part of the cover is engaged with the guide groove of the base, and the upper end part is engaged with the insertion hole of the hook part by crimping a support such as a hanging string on the lower surface of the pace. Since the locking rod is provided on the cover side, even if a force is applied to the cover inadvertently in the direction of uncoupling the cover when it is connected to the base, the locking rod and the locking hook insertion hole will not engage. It is safe because it does not rotate in the release direction due to the locking, and electrical equipment such as lighting fixtures hung from the ceiling or wall will not fall off, and there is no risk of electrical contact failure. .

In particular, since the locking rod and the locking hook insertion hole are engaged at a position away from the center of rotation of the cover, rotation of the cover in the release direction can be more reliably prevented.

In addition, since the locking hook insertion hole of the base is used as the locking rod's engagement hole, there is no need for any special processing on the base, and it can also be used with conventionally used bases or bases that are already attached to ceilings etc. It can be applied as is.

Furthermore, by attaching a support such as a hanging string to the lower surface of the base, the locking rod 26 can naturally be engaged with the locking hook insertion hole 18, and there is no need to separately operate the locking rod 26. Therefore, the workability during installation is extremely good.

Since the lower end of the housing locking rod 26 protrudes downward from the lower surface 21 of the cover 20, the locking rod 26 does not engage with the locking hook insertion hole 18 and the cover 20 does not fit into the base 12.
It can be visually confirmed even from diagonally below that it is in a state where it can be rotated in the direction to release the connection.

Furthermore, the locking rod 26 can be engaged with the locking hook insertion hole 18 by simply attaching a support 30 for a hanging string to the lower surface 21 of the cover. It is possible to visually confirm the state of prevention from diagonally below.

In this way, the device for preventing the hook and sealing from falling off according to the present invention diagonally detects whether or not the locking rod 26 is engaged with the engagement hook insertion hole 18 and the rotation of the cover 20 is prevented. This has the effect of significantly increasing safety because it can be visually confirmed from below.

Furthermore, since it has a support 30 for a hanging string, etc., it has the effect that any type of lighting equipment can be hung thereon.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing a ceiling with a hook according to an embodiment of the present invention, and Fig. 2 is a partial view showing the previous hook with a support such as a hanging string attached to the ceiling. A cutaway front view, FIG. 3 is a partial perspective view showing the main parts, and FIG. 4 is an rV-IV cross section of FIG. 2 showing the engaged state of the locking rod of the cover and the locking hook insertion hole of the base. FIG. 5 is an exploded perspective view showing a conventional hook and seal. Explanation of symbols, 12...Base, 16...
・Guide groove, 18... Locking hook insertion hole, 20...
...Cover, 21...Bottom surface of cover, 22
...Hook-shaped terminal plate, 24...Latching hook part,
26...Latching rod, 26'...Low end of locking rod, 26"...Top end of locking rod, 30...
...Support.

Claims (1)

[Scope of utility model registration request] A base 12 having a locking hook insertion hole 18 and a guide groove 16 that communicates with the locking hook insertion hole 18; Hook part 2
4, and a support 30 for a hanging cord or the like attached to the lower surface 21 of the cover. Draw the locking rod 2 at a position corresponding to the hook insertion hole 18.
6 is provided to be slidable in the vertical direction, and its lower end is connected to the cover 20.
The length of the locking rod 26 in the vertical direction is longer than the height of the cover 20.
5 so that the lower end 26' of the locking rod 26 is pushed upward, and the upper end 26'' projects upwardly beyond the upper end of the cover 20 to fit into and engage with the locking hook insertion hole 18. The hook is a device to prevent the seal from falling off.