JPH088126B2 - Wiring equipment for ceiling - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a ceiling wiring device attached to a lower surface of a ceiling to supply power to a lighting device.

[Background Art] The lighting fixtures used in recent Japanese and Western-style rooms have multiple lights,
The tendency toward larger size is remarkable. On the other hand, the ceiling mounting method for lighting fixtures has also changed from a cord suspension method to a direct sunlight mounting method, and the need for ceiling wiring equipment that can cope with these changes is increasing.

FIG. 16 is a cross-sectional view showing a mounting state of a conventional wiring device for a ceiling of this type, in which an electric wire 3 wired on the back surface of the ceiling 1 is placed on the lower surface of the ceiling 1 through an insertion hole 2 formed in the ceiling 1. It is led out and connected to the connection part of the instrument body 4 '. FIG. 17 shows a perspective view of an instrument body 4'made of an insulating material as seen from above, and FIG. 18 shows a perspective view as seen from below.
In the conventional appliance body 4 ', when the electric wire 3 is connected, the knockout portion 14 in which the thickness of the side wall 15 is thin is destroyed and the electric wire 3 is inserted into the knockout portion 14.
Then, the conductor of the electric wire 3 was inserted into the insertion hole 16 formed in the center of the instrument body 4'and connected to the connecting portion by the locking spring. That is, since the electric wire 3 inserted through the insertion hole 2 of the ceiling 1 is placed on the lower surface of the ceiling 1 and is wired from the side surface of the instrument body 4 ′ into the instrument body 4 ′ through the knockout portion 14, the knockout portion 14 There is a problem in that the height of the whole part becomes high and the height dimension H as a whole becomes high. The 18th
As shown in the figure, a pair of projections 17 for guiding the cap, a screw hole 18 for attaching to the ceiling 1,
An insertion port 19 through which the blade of the cap is inserted and rotated is formed.

[Object of the Invention] The present invention has been provided in view of the above points,
The height of the main body of the fixture can be lowered with the electric wire attached, and the purpose is to reduce the gap between the ceiling surface and the lighting fixture so that there is no discomfort. By integrally forming with the blade receiving spring piece and by integrally connecting both blade receiving spring pieces, the entire connection part has a reliable integrated structure, and the plug blade of the lighting equipment side cap and the blade receiving spring of the equipment body contact The above is intended to provide a ceiling wiring device.

DISCLOSURE OF THE INVENTION (Structure) A specific invention is to provide a tubular body made of an insulating material, which is placed in a ceiling insertion hole and through which the electric wire is inserted, on the upper surface side of the instrument body, and the tubular body is inserted in the ceiling insertion hole It is characterized in that the electric wire is inserted into the tubular body, and the conductor of the electric wire is directly connected to the instrument body through the tubular body.

Further, the merged invention provides two blade receiving spring pieces at the connecting portion, one blade receiving spring piece is provided with one contact piece having a protrusion for holding a blade, and the other blade receiving spring piece is provided with an electric wire. The conductor is provided with the electric wire contact piece in pressure contact with the locking spring and the other contact piece that holds the plug blade of the cap between the contact piece of the one blade receiving spring piece, and the one blade receiving spring piece. It is characterized in that the other blade receiving spring piece is integrally connected.

(Example) Hereinafter, the example of a specific invention is described with reference to drawings. The exposed device body 4 attached to the lower surface of the ceiling of the present invention includes a noble table 20 made of an insulating material, a pair of locking springs 9 and 9 housed in the base 20, and an unlock button 23. A pair of connecting portions 22 made of a conductive material, a cover 21 for covering the upper surface opening of the base 20, and the like.

The base 20 is formed thin, and the locking springs 9 are housed in the housing recesses 25 on both sides of the central insulating wall 24.
A recess 26 is formed between the insulating wall 25 and the side wall, and the unlock button 23 is housed in the recess 26. Above storage recess 24
Is formed so as to be one step lower than the bottom surface of the instrument body 4, and as shown in FIG. 2, a circular protrusion 28 that also serves as a guide for the cap 6 is provided on the lower surface of the base 20, and the protrusion 28 is formed. The bottom of 28 is dug to form the storage recess 24, and the height of the base 20 is lowered. In this embodiment, the height of the base 20, that is, the height of the instrument body 4 is about half that of the conventional one. Base 20
Storage chambers 27 for storing the connection portions 22 are formed on both inner sides of the storage chamber 27, and a slot-like insertion opening 19 through which the blade 5 of the cap 6 is inserted is formed on the bottom surface of the storage chamber 27. . A plate-shaped wire contact piece 10 that contacts the conductor 3a of the wire 3 is formed at one end of the connection portion 22, and a blade receiving spring 13 composed of two contact pieces 11 and 12 is integrally formed at the other end. ing.

The cover 21 that covers the upper opening of the base 20 is made of an insulating material, and an elastic cylindrical body 7 that penetrates vertically is integrally formed on the upper surface of the central portion of the cover 1. The cylindrical body 7 has a circular cross section, but may have an elliptical cross section as shown in FIG. Grooves 8 having open upper ends are formed on both sides of the cylindrical body 7 in the vertical direction. The groove 8 is for confirming whether or not the electric wire 3 is inserted when the electric wire 3 is inserted into the tubular body 7, and the elastic force of the tubular body 7 is used to insert the through hole of the ceiling 1. It is elastically contacted with the inner surface of 2 for temporary fixing of the instrument body 4. Screw insertion holes 29 are bored in the covers 21 on both diagonal sides of the cylindrical body 7. By inserting the assembly screws 31 through the screw insertion holes 29 and screwing them into the screw holes 30 of the base 20, The cover 21 will be fixed to the base 20. Further, on both sides of the cylindrical body 7, there are formed through holes 32 through which screws for attaching the instrument body 4 to the ceiling 1 are inserted. Corresponding to this insertion hole 32, the base 20 is also provided with an insertion hole 33 penetrating vertically. Further, an unlock button 23 is provided on the side edge of the cover 21.
A notch portion 21a for exposing the head portion 23b of the head is formed on the upper surface. The cylindrical body 7, that is, the cover 21 may be formed of a transparent resin in order to easily confirm the insertion state of the electric wire 3.

Next, the installation of the instrument body 4 will be described. First, the instrument body 4 uses the assembly screw 31 for the screw insertion hole 29 of the cover 21.
The cover 21 by screwing it into the screw hole 30 of the base 20 via the
Fixed at 20. Here, the cover 21 is attached within the opening surface of the base 20. The base 20 and the cover 21 are generally formed as a unit body 4 which is already integrated. Therefore, the end portion of the electric wire 3 wired on the back surface of the ceiling 1 is led out to the lower surface of the ceiling 1 through the insertion hole 2, and the tubular body 7 of the appliance body 4 is inserted.
The pair of conductors 3a of the electric wire 3 are inserted between the electric wire contact piece 10 and the lock spring 9, and the conductor 3a and the electric wire contact piece 10 are contact-connected. Here, as shown in FIG. 4, the conductor 3a
The upper piece 9a and the lower piece 9b of the locking spring 9 are elastically contacted with each other, and the conductor 3a is elastically contacted with the wire contact piece 10 by the biasing force.
The upper piece 9a of the chain spring 9 is locked to the conductor 3a of the electric wire 3 to prevent the conductor 3a from coming off. Locking spring 9 and connecting part
The wire contact piece 10 of 22 is a storage recess 24 formed on the upper side of the protrusion 28.
It is arranged inside and the height of the instrument body 4 is lowered. When the instrument main body 4 to which the electric wire 3 is connected is pushed up and abuts against the lower surface of the ceiling 1, the tubular body 7 is located in the insertion hole 2 of the ceiling 1, and the elastic force of the tubular body 7 causes the tubular body 7 to move to the ceiling 1 By elastically contacting the inner surface of the insertion hole 2, the instrument body 4 is temporarily fixed to the insertion hole 2. Next, from the bottom surface of the base 20, using the tap screw 34, the insertion hole 3 for the base 20 and the cover 21 is formed.
It is screwed and fixed to the lower surface of the ceiling 1 through 2,33. At this time, the cylindrical body 7 of the appliance body 4 is positioned inside the insertion hole 2 of the ceiling 1 as shown in FIG. 4, and the electric wire 3 and the ceiling material are insulated from each other. This state is shown in FIG. Furthermore, by inserting the plug blade 5 of the cap 6 attached to the tip of the cord from the lighting fixture side into the insertion port 19 of the fixture body 4 and rotating the plug blade 5, the plug blade 5 becomes the blade of the connecting portion 22. Sliding contact is made between the contact pieces 11 and 12 of the receiving spring 13, and the blade 5 and the blade receiving spring 13 are electrically connected. Then, the lighting fixture is directly attached to the lower surface of the ceiling 1. Since the fixture body 4 is formed thin, the gap between the lighting fixture and the lower surface of the ceiling 1 is reduced.
When disconnecting the wire 3 from the base 20, tap screw
Remove 34 and pull the instrument body 4 downwards.
The head 23b of the unlock button 23 exposed at 21a is locked by the lock spring 9
When pushed to the side, the protruding piece 23a of the unlock button 23 causes the upper piece 9a and the conductor 3
By releasing the lock with a, the conductor 3a can be pulled out.

By the way, the groove 8 for checking the insertion state of the electric wire 3 of the cylindrical body 7
May be one, or two or more may be formed. FIG. 6 shows the case where three grooves 8 are formed,
When the cylindrical body 7 broken by the groove 8 is inserted into the insertion hole 2 of the ceiling 1, it is pushed inward from the inner surface of the insertion hole 2 as shown by the arrow in the figure, and the repulsive force of the cylindrical body 7 causes the instrument body 4 to move to the ceiling 1 It is configured to be temporarily fixed to the insertion hole 2 of. Further, when the knurled portion 35 is formed on the outer surface of the tubular body 7 as shown in FIG. 6, the temporary fixing action to the insertion hole 2 of the ceiling 1 of the instrument body 4 becomes more effective. . FIG. 7 is a view showing a mounting state of the instrument body 4. Further, as shown in FIGS. 8 and 9, when the projection 36 for temporary fixing is formed on the outer peripheral edge of the upper end of the cylindrical body 7, the effect of temporary fixing becomes more remarkable.

10 to 12 show the embedded and exposed instrument main body 4 in which the base 20 is formed in a circular shape, and the other structure is the same as that of the previous embodiment. It should be noted that grooves 37 are formed on both sides of the base 20 for mounting hanging metal fittings.

FIG. 13 is an enlarged perspective view of the connecting portion 22 for explaining the merged invention. The connecting portion 22 has conductivity and elasticity, and as described above, the flat wire 3 is provided at one end. The conductor of
An electric wire contact piece 10 that contacts 3a is formed, and a blade receiving spring 13 including two contact pieces 11 and 12 is integrally formed at the other end. The base of the blade receiving spring 13 is formed in a U shape, and both contact pieces 11,1
2 are opposed to each other and the connecting portion 22 has a single structure. A projection 11a for holding the blade 5 is provided on the tip side of the upper contact piece 11. The blade 5 of the cap 6 is the contact pieces 11,1 of the blade receiving spring 13.
By sliding between 2 and overcoming the protrusion 11a, the blade 5
Is elastically sandwiched from both sides by the contact pieces 11 and 12, and the blade 5 is more surely contacted and connected. Since the connecting portion 22 thus formed has a single-sheet structure, it has good electrical contact.

FIG. 14 shows another embodiment of the connecting portion 22.
Is composed of two members. That is, the protrusion
It is composed of a blade receiving spring piece 38 having 11a and a blade receiving spring piece 39 having an electric wire contact piece 10. By bending and forming a pair of temporary stop pieces 40 from the lower edge of the end of the blade receiving spring piece 38, and connecting the central piece 41 of the other blade receiving spring piece 39 to this temporary stop piece 40, FIG. The connection part 22 as shown in FIG. In this embodiment, no vertical groove is formed in the tubular body 7 of the instrument body 4, and a window 42 for confirming the insertion of the electric wire 3 is opened at the base of the tubular body 7. Other configurations are the same as those of the previous embodiment. In this embodiment, since the temporary fixing piece 40 is provided, the blade receiving spring piece 39 and the work such as rivet connection and welding are unnecessary. Further, since a spring material can be used for the temporary fixing piece 40, reliable connection can be achieved.

[Effects of the Invention] As described above, the specific invention includes an instrument main body that is internally arranged with a connecting portion that is connected to a conductor of an electric wire led out through an insertion hole formed in a ceiling surface and is attached to a ceiling lower surface. A cap that is connected to the lighting fixture arranged on the lower surface of the ceiling and is rotated inside the blade to make a contact connection with the connecting portion and that is detachably attached to the fixture main body from the lower surface of the fixture main body. In the ceiling wiring device, since the tubular body made of an insulating material that is placed in the ceiling insertion hole and through which the electric wire is inserted is provided on the upper surface side of the instrument body, the tubular body of the instrument body is inserted into the ceiling insertion hole. By inserting the electric wire through this cylinder and connecting the instrument body and the conductor of the electric wire,
It is not necessary to form a knockout part for inserting the electric wire attached to the lower surface of the ceiling as in the past, and the height of the main body of the fixture can be lowered by that much. Therefore, the lighting fixture was attached to the ceiling surface. In this case, it is possible to reduce the gap between the ceiling surface and the lighting equipment, and it does not give a sense of incongruity as in the past.In addition, since the tubular body is made of an insulating material, the insulation protection of the wire is perfect. It has a certain effect.

Further, in the merged invention, a connecting portion for connecting to a conductor of an electric wire led out through an insertion hole formed in the ceiling surface is housed and disposed inside, and an instrument body attached to the ceiling lower surface and a fixture main body attached to the ceiling lower surface. In a ceiling wiring device consisting of a cap that is connected to the lighting device and is rotated inside a blade disposed inside to make a contact connection with the connection portion, and is detachably attached to the device body from the lower surface of the device body, 2 in the above connection
Two blade receiving spring pieces are provided, and one blade receiving spring piece is provided with one contact piece having a protruding portion for holding the blade, and the other blade receiving spring piece is brought into pressure contact with the wire conductor by the locking spring With the other contact piece that holds the plug blade of the cap between the one piece and the contact piece of the one blade receiving spring piece, the one blade receiving spring piece and the other blade receiving spring piece are integrally formed. Since it is connected, the electric wire contact piece and the blade receiving spring piece are integrally formed, and the double blade receiving spring piece is integrally connected, so that the entire connecting portion has an integrated structure that ensures electrical contact. Since the blades can be reliably connected, the contact reliability can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an instrument body of an embodiment of the specified invention, FIG. 2 is a perspective view of the same instrument body seen from below, and FIG. 3 is a main part of another embodiment of the same tubular body. FIG. 4 is a perspective view, FIG. 4 is a sectional view of the same as above, FIG. 5 is a sectional view showing a mounting state of the same as above, FIG. 6 is a perspective view of still another embodiment of the cylindrical body of the same, and FIG. Sectional views showing the state, FIGS. 8 and 9 are sectional views and perspective views when a protrusion is provided on the same cylinder, and FIGS. 10 to 12 are perspective views when the base is circular. Figure, perspective view and cross-sectional view seen from below, Figure 13 is an enlarged perspective view of the connection portion of the embodiment of the merged invention, Figure 14 is an exploded perspective view of another embodiment of the above, Figure 15 is the same as above. FIG. 16 is an enlarged perspective view, FIG. 16 is a cross-sectional view showing a mounted state of a conventional example, FIG. 17 is a perspective view of an instrument body of a conventional example, and FIG. 18 is a perspective view seen from the above. 1 is a ceiling, 2 is an insertion hole, 3 is an electric wire, 3a is a conductor, 4 is a device body, 5 is a blade, 6 is a cap, 7 is a cylinder, 8 is a groove, 9
Is a lock spring, 10 is a wire contact piece, 11 and 12 are contact pieces, 13 is a blade receiving spring, and 22 is a connecting portion.

Claims (3)

[Claims] 1. A main body of a fixture, which is attached to a lower surface of a ceiling, in which a connecting portion for connecting to a conductor of an electric wire led out through an insertion hole formed in the ceiling surface is housed and attached to a lower surface of the ceiling, and lighting arranged on a lower surface of the ceiling. A ceiling wiring tool comprising a cap, which is connected to the appliance and is rotated to make a contact connection with the connector by rotating the blade disposed inside, and a cap which is detachably attached to the appliance body from the lower surface of the appliance body, wherein A wiring device for a ceiling, characterized in that a cylindrical body made of an insulating material, which is arranged in the insertion hole of the device and through which the electric wire is inserted, is provided on an upper surface side of the device body. 2. An elastic body is formed on the cylindrical body, and a vertical groove having an open upper end is formed so that the outer peripheral surface of the cylindrical body is elastically contacted with the inner surface of the insertion hole of the ceiling, and the instrument body is temporarily attached to the ceiling. The ceiling wiring device according to claim 1, wherein the wiring device for ceiling is capable of being stopped. 3. A device main body attached and mounted on a lower surface of a ceiling, in which a connecting portion for connecting to a conductor of an electric wire led out through an insertion hole formed in a ceiling surface is housed and attached to a lower surface of the ceiling, and proof of being placed on the lower surface of the ceiling. A wiring tool for a ceiling, which comprises a cap blade connected to a device and rotated inside to make a contact connection with the connection portion, and a cap that is detachably attached to the device body from the lower surface of the device body. Part is provided with two blade receiving spring pieces, one blade receiving spring piece is provided with one contact piece having a protruding portion for holding a blade, and the other blade receiving spring piece is pressed against the conductor of the electric wire by a locking spring. With the other contact piece for sandwiching the plug blade of the cap between the electric wire contact piece and the contact piece of the one blade receiving spring piece, one blade receiving spring piece and the other blade receiving spring piece Wiring equipment for ceiling, characterized in that it is formed by integrally connecting.