JPS5838541Y2 - Heisen Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiring device such as a hanging ceiling rosette.

Hanging ceiling rosettes and the like that are attached to the ceiling surface are used to suspend and support lighting equipment, so they must be made of a rigid material, but it is difficult to form mounting holes.

In other words, if the mounting holes are formed to a certain size, when mounting with wood screws, etc., if the diameter of the mounting holes is large, it will not be possible to mount securely if the screw dimensions are regulated, and if large wood screws are used, There is a risk of damage due to insertion.

On the other hand, as shown in Japanese Patent Publication No. 46-5649,
A device for preventing wood screws from falling off has been proposed in which a protrusion is formed at the neck of the boundary ring between a wood screw hole and a wood screw head hole in an insulator of a housing, and the wood screw is held by the protrusion.

However, in this case, the casing is generally molded from a rigid body, and the wood screw holes have protrusions formed therein, so it is not only difficult to form minute protrusions when molding the casing, but also during molding. Undesired burrs may occur, the desired dimensions may not be achieved, and there may be many manufacturing defects.In addition, when the screws are removed, the burr protrusions may be damaged and may become unusable if screwed in again. be.

The present invention aims to improve these points by attaching a plate-shaped lid body that covers the terminal to the main body, and integrally forming a protrusion for locking the mounting screw on the inner wall of the through hole of this lid body. This allows the locking protrusion to have the desired dimensions during molding, and the lid body, which can be made from an elastic material separate from the main body, reliably engages the mounting screw and prevents it from falling off. This is so that it can be prevented.

Next, an embodiment of the present invention will be described with reference to a hanging ceiling rosette shown in the drawings.

Reference numeral 1 denotes a box-shaped main body that is integrally formed of a highly rigid insulating synthetic resin and is open on one side, and a pair of insertion holes 2 for hooking fittings are symmetrically formed at both ends of the front surface of the main body 1. .

Each insertion hole 2 includes a large-diameter insertion portion 3 at one end and an elongated guide portion 4 continuing from the insertion portion 3.

A pair of mounting bosses 5 are provided symmetrically protruding inside the other surface of the main body 1 at inner positions of the insertion holes 2 at both ends, and each mounting boss 5 has a mounting member that communicates from one surface to the front surface. Hole 6
And screw holes 7 are symmetrically drilled from one side.

A wall body 8 is provided on the inner surface of one side wall of the main body 1 from the inside of the other side with a gap between the mounting bosses 5 at both ends, and a semicircular arc shaped bearing is mounted on the upper surface of each wall body 8. A recess 9 is formed, and a pair of voids 10 are formed between each wall body 8.

Furthermore, the above-mentioned empty space 1 is provided in the center of the back side of one side of the main body 1.
A notch 11 is formed with respect to the main body 1, and a notch opening 12 formed by knocking out is provided at the center of the back side of the other side wall of the main body 1.

A pair of locking terminals 13 are installed in each cavity 10 of the main body 1.

Each of the locking terminals 13 is provided with a locking piece 14 having a rectangular shape, and a terminal piece 15 is provided oppositely to the end of the locking piece 14 .

A contact piece 17 is integrally connected to each terminal piece 15 via a conductive portion 16, and each contact piece 17 is provided oppositely to the inner surface of each insertion hole 2.

Reference numeral 18 denotes a plate-shaped first lid body integrally formed of an insulating synthetic resin having elasticity.This first lid body 18 has circular bosses 19 protruding from the top of both ends. A through hole 20 corresponding to each attachment hole 6 of the main body 1 is formed in the boss 19, and a lid attachment hole 21 corresponding to the screw hole 7 of the main body 1 is symmetrically adjacent to each through hole 20. It is perforated.

Furthermore, a plurality of thin-walled attachment screw locking protrusions 22 are integrally formed in an annular shape on the inner wall of the intermediate portion of each through-hole 20 of the first lid 18 with slits 23 therebetween.

Each cavity 10 of the main body 1 is located in the center of the first lid body 18.
A pair of wire insertion holes 24 are formed corresponding to the wire insertion holes, and a partition wall 25° 26 is protruded from each of the wire insertion holes and one side, and one side of the main body 1 is provided on the outside of the partition wall 26 on one side. A notch 27 corresponding to the notch 11 is formed, and this notch 2
A semi-circular bearing recess 28 corresponding to the bearing recess 9 of the main body 1 is formed on the back surface of both ends of the main body 7, and a notch opening 12 on the other side of the main body 1 is formed on the other side of each electric wire insertion hole 24.
A recess 29 is formed corresponding to the recess 29 .

The first lid body 18 is fitted from the opening on the back side of the main body 1, and the back side is brought into contact with the upper surface of each mounting boss 5, and the locking piece 14 and terminal piece 15 of each locking terminal 13 are brought into contact with each other. and each screw hole 7 of the main body 1 from each lid mounting hole 21.
It is fixed by a screw 30 inserted into and engaged with.

Reference numeral 31 denotes an unlocking button integrally formed of insulating synthetic resin, and this unlocking button 31 is provided with a rotating shaft 32 protruding from both end faces at the lower part thereof, and this rotating shaft 32 is connected to the main body 1. It is supported by a bearing recess 9 on the upper surface of the wall 8, and the protrusions at both ends are supported by bearing recesses 28 on the back surface of the first lid 18 and are rotatably held.

Further, an operator 33 is provided above the unlock button 31,
The operator 33 is housed in the notch 27 on one side of the first lid 18 and in the notch 11 on one side of the main body 1, and is exposed to the outside.

Furthermore, each of the locking terminals 13 is attached to the lower end of the operator 33.
A pair of operating portions 34 are integrally provided and project from the upper side of the locking piece 14.

35 is a plate-shaped second plate made of an elastic insulating synthetic resin.
A pair of through holes 36 corresponding to the through holes 20 of the first lid 18 are formed at both ends of the second lid 35, and an annular hole is formed on the inner wall of each through hole 36. A plurality of mounting screw locking protrusions 37 are integrally formed with slits 38 so as to have an inner diameter smaller than the diameter of the mounting screw.

The second lid body 35 is covered with the opening on the back side of the main body 1, and the back side is connected to each boss 19 of the first lid body 18.
is in contact with the top surface of the

Then, for example, when connecting to the electric wires 39 pulled out from the ceiling surface when attaching it to construction materials on the ceiling surface, the electric wires 39 are pulled in from the opening on the back of the main body 1, and each core wire is connected to the first lid body. The electric wires are inserted into the spaces 10 through the 18 electric wire insertion holes 24, and inserted between the lock piece 14 and the terminal piece 15 of each lock terminal 13 to connect the wires.

At the same time, a mounting screw such as a wood screw is inserted from the surface of the main body 1 into each through hole 20 of the first lid body 18 through each mounting hole 6, and is firmly engaged with the protrusion 22 in each through hole 20. Temporarily fasten.

In addition, when connecting the electric wires 39 from the horizontal direction along the ceiling surface, the electric wires 39 are pulled in through the notch opening 12 formed by knocking out the main body 1, and each core wire is connected to the first lid body 18. The electric wire is inserted into each cavity 10 through the wire insertion hole 24, and inserted between the locking piece 14 and the terminal piece 15 of each locking terminal 13 to connect the wire.

That is, the electric wire 39 enters through the notch opening 12 and is bent, and the tip of the core wire passes through the first lid body 18 and is connected to the locking terminal 13.
connected to.

Then, a second lid 35 is disposed in an opening on one side of the main body 1 to cover the exposed portion of the electric wire 39, and a mounting screw is inserted from the surface of the main body 1 through each mounting hole 6 into the first lid 18. Each through hole 20 of
and each penetration of the second lid body 35 (inserted into L36,
The lid body 35 is engaged with the screw locking protrusion 37 of each through hole 36 and temporarily fixed.

In this way, the main body 1 is brought into contact with a construction material such as a ceiling surface, and fixed by screwing in the mounting screws.

In addition, when removing the electric wire 39, the operator 3 of the unlock button 31
3 to rotate around the rotation shaft 32, and each operating part 34
The upper side of the locking piece 14 of the locking terminal 13 is pressed and deformed to unlock the electric wire 39.

Note that by making the length from the rotation shaft 32 of the unlock button 31 to the tip of the operating part 34 larger than the length from the rotation shaft 32 to the operating element 33, the lever action is sufficiently exerted and the operation is made easier. You can make it happen.

In addition, the rear end surface of the operator 33 of the unlock button 31 is attached to the main body 1.
If the end face of one side is the same, when the main body 1 is attached to a structure, the operator 33 will not be able to rotate, and the unlock button 31 will be inadvertently pressed.
It is possible to eliminate the risk of the electric wire 39 being activated and causing poor contact of the electric wire 39.

As described in detail above, the present invention has an elastic plate-shaped lid that covers the terminal attached to the main body, and a protrusion for locking the mounting screw is integrally formed on the inner wall of the screw through hole of this lid. ,
Since the locking protrusion can be formed by punching, the screw locking protrusion can be formed with the desired dimensions when forming the lid, and the screw locking protrusion will not be damaged even if the screw is removed.
It is possible to enable reuse without any problems.

[Brief explanation of drawings]

The figures show an embodiment of the present invention applied to a ceiling rosette. Figure 1 is an exploded perspective view, Figure 2 is a vertical sectional view, Figure 3 is a front view, and Figure 4 is a lid and a lid. FIG. 5 is a rear view with the unlock button removed, FIG. 5 is a rear view with a portion of the lid body cut away, and FIGS. 6 and 7 are cross-sectional views thereof. 1...Main body, 5...Mounting boss, 6.
...Mounting hole, 13...Terminal, 18.35
......Lid, 20...Through hole, 22゜3
7... Protrusion for locking the mounting screw, 30...
screw.

Claims (1)

[Scope of utility model registration request] The main body is open on one side, and the mounting that communicates from one side to the other side of the main body is provided by a pair of mounting bosses protruding from the inside of the other side of the main body having holes, and between the pair of mounting bosses. and a pair of screw through holes communicating with the mounting hole and having mounting screw locking protrusions on the inner wall, made of an elastic insulating material that abuts the mounting boss and covers the terminal. 1. A wiring device comprising: a plate-shaped lid; and a mounting screw inserted through the through hole and screwed into the hole.