JP3674303B2 - Wiring duct plugs and appliances - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiring duct plug and an electric appliance such as a lighting fixture.
[0002]
[Prior art]
The first conventional example (for example, Japanese Patent Laid-Open No. Sho 50-53895) has two electrical connection portions with a wiring duct, and operates two electrical connection portions in conjunction with one operation tool. is there.
The second conventional example (for example, Japanese Patent Application Laid-Open No. 64-81180) has a pair of mounting portions and a pair of plug blades for electrical connection. There is no wiring duct plug in which only one plug blade for electrical connection operates.
[0003]
[Problems to be solved by the invention]
In the first conventional example, the two electrical connections are merely interlocked, and the ones that should be attached separately are integrated. In the second conventional example, there are two attachment portions, but the operation is performed by operating individual operation tools.
For this reason, when a large external force is applied to the wiring duct plug, for example, it is not possible to ensure safety in a case where the wiring duct is used in a large instrument that is long in parallel with the wiring duct or wide in the width direction of the wiring duct. There was a problem.
[0004]
Accordingly, an object of the present invention is to provide a wiring duct plug and an electric appliance that can ensure safety even when applied to a large-sized appliance.
[0005]
[Means for Solving the Problems]
The wiring duct plug according to claim 1 is held by the plug main body having a side plate and having a screw hole in the side plate, a plug mounting body for attaching the side plate by a screw screwed into the screw hole, and the plug main body. A first attachment portion and a second attachment portion that are attached to the wiring duct by being inserted into the wiring duct and rotating; and an operation portion that rotates the first attachment portion and the second attachment portion. And an electrical connection portion provided in the first mounting portion and in contact with a conductor of the wiring duct by the rotation of the first mounting portion.
[0006]
According to the plug for a wiring duct according to the first aspect, since the first attachment portion and the second attachment portion that are interlocked with the operation of the operation tool are provided, the attachment strength to the wiring duct can be sufficiently secured. Therefore, when a plurality of wiring duct plugs are used in an electric appliance, even a large appliance has sufficient attachment strength and can ensure safety .
[0007]
Further, since the attachment portion is provided on the side plate of the plug body, the plug body is attached to the plug attachment body in the lateral direction, so that the appliance can be thinned, and the inclination at the time of attachment can be prevented. In addition, when mounting the mounting part as a screw hole to the plug mounting body with a screw, it can be supported by the shearing force of the screw, so that sufficient strength for mounting the tool can be secured, and the tool assembly tool can be unified. Cheap.
[0008]
The wiring duct plug according to claim 2 is held by the plug main body having a side plate and having a screw hole in the side plate, a plug mounting body for attaching the side plate by a screw screwed into the screw hole, and the plug main body. A first attachment portion and a second attachment portion that are attached to the wiring duct by being inserted into the wiring duct and rotating; and an operation portion that rotates the first attachment portion and the second attachment portion. , and an electrical connection portion for contacting the conductors of the first said provided on the mounting portion of the first of the wiring duct by the rotation of the attaching portion,
The plug attachment body is a conductor, and the first attachment portion has a ground terminal that conducts between the ground of the wiring duct and the plug attachment body when the plug body is attached to the plug attachment body. ,
The ground terminal has an end portion that comes into contact with the wiring duct and an end portion that comes into contact with the plug mounting body directly or via a plug body and a screw .
According to the plug for a wiring duct according to claim 2 , in addition to the same effect as that of claim 1 , the plug mounting body can be grounded without a separate process, and the time for assembling the appliance during the plug mounting operation can be reduced. At the same time, materials such as electric wires can be reduced, and work mistakes and process capability differences can be eliminated and the reliability of ground connection work can be maintained.
[0009]
An appliance as claimed in claim 3 and has a wiring plug duct according to claim 1 or claim 2, wherein.
[0010]
According to the electric appliance of claim 3, having the same effect as claim 1 or claim 2.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, this electric appliance is applied to a lighting fixture, and has an appliance main body 1 and a pair of wiring duct plugs 2 and 3.
The wiring duct 4 is attached to the lower surface of the ceiling 5 as shown in FIG. For example, as shown in FIG. 3, the conductive groove-shaped duct main body 46 also serving as the ground, the insulator 47 covering the entire surface of the duct main body 46, and the inner surface of the insulator 47 are arranged. A pair of conductors 10 is provided. 11 is an opening of the wiring duct 4, and 12 is a mounting groove.
[0012]
The instrument main body 1 is provided with a plurality of straight tube fluorescent lamps that are long in the direction along the wiring duct 4, for example.
As shown in FIGS. 4 and 5, the pair of wiring duct plugs 2 and 3 are provided in the instrument main body 1 and have operating tools 6 and 7 at both ends in the direction along the wiring duct 4 of the instrument main body 1, respectively. The first mounting portion 8 and the second mounting portion 9 are attached to the wiring duct 4 by being inserted into the wiring duct 4 and rotated in conjunction with the operation of the operation tools 6 and 7. Then, at least one of the wiring duct plugs 2, 3, that is, in this embodiment, the wiring duct plug 2 is inserted into the wiring duct 4 and rotated in conjunction with the operation tool 6, thereby causing a conductor of the wiring duct 4. 10 has an electrical connection 13 in contact with 10.
[0013]
That is, the structure of the wiring duct plug 2 includes an operating tool 6, a first mounting portion 8 that is attached to the wiring duct 4 by being inserted into the wiring duct 4 and rotated in conjunction with the operation of the operating tool 6. The second mounting portion 9 and an electrical connection portion 13 provided in the first mounting portion 8 and in contact with the conductor 10 of the wiring duct 4 by the rotation of the first mounting portion 8 are configured.
[0014]
The wiring duct plug 2 of the embodiment holds the first mounting portion 8 and the second mounting portion 9, and has a plug body 27 having a side plate 25 with a mounted portion 26, A plug mounting body 28 for mounting the mounted portion 26 is provided. Specifically, the plug body 27 is formed by bending a metal conductor made of a pair of side plates 25 and a bottom plate 30 into a substantially U shape, and the operation tool 6 is provided between the bottom plate 30 and one end side of the side plate 25. The cover part 31 is bent by providing a gap 45 to be passed. The attached portion 26 is, for example, a screw hole. As shown in FIG. 6, the plug attachment body 28 uses a metal conductive plate, is substantially U-shaped with flanges on both sides, has a size that can accommodate the plug body 27, and matches the attached portion 26 of the side plate 25. A screw insertion hole 33 is formed at a position, a screw 34 as a coupling tool is passed through the screw insertion hole 33, and the plug body 27 is fixed to the plug attachment body 28 by being screwed into the attachment portion 26.
[0015]
Further, the internal structure of the wiring duct plug 2 includes a pair of insulators 16 and 17 rotatably provided in through holes 35 and 36 formed in the bottom plate 30 of the plug body 27 , and outer peripheries of the insulators 16 and 17. The gear parts 18 and 19 which are provided to each other and mesh with each other, and the operation tool 6 provided in the gear part 18 are configured. The insulator 16 has a first attachment portion 8, the insulator 17 has a second attachment portion 9, and the insulator 17 is located inside the instrument body 1 with respect to the insulator 16. The insulator 16 has a ground terminal mounting through-hole 21 at the center of rotation, and is parallel to the through-hole 21 with the through-hole 21 therebetween, and the upper end of the insulator 16 is above the first mounting portion 8. A conductor insertion hole 22 opened in the same direction as the extending direction of the attachment portion 8 is formed. An electrical connection portion 13 using a substantially L-shaped contact piece is built in along the conductor insertion hole 22 and its tip 13a protrudes outward in parallel with the first mounting portion 8, with the lead wire at the other end. 40 is connected.
[0016]
The wiring duct plug 3 according to the embodiment has the same configuration as the operating tool 6 except that the contact piece 13 of the wiring duct plug 2 is not provided and the ground terminal 41 is provided in the through hole 21. Other than that, the rest of the structure is the same. That is, the ground terminal 41 of the wiring duct plug 3 conducts the ground of the wiring duct 4 and the plug mounting body 28 when the first mounting portion 8 mounts the plug body 27 to the plug mounting body 28. As shown in FIG. 5, the upper end 41 a and the lower end 41 b of the ground terminal 41 protrude outward, and when the plug body 27 is attached to the plug attachment body 28 with screws 34, the bottom terminal 28 a of the plug attachment body 28 is attached. The lower end 41b is pressed and electrically connected. In addition, as in the first embodiment, the insulator 16 is located at the end of the instrument body 1 and the insulator 17 is located on the inner side of the insulator 16 as in the first embodiment.
[0017]
Connection to the wiring duct 4 will be described. The instrument body 1 is brought close to the wiring duct 4 and, for example, the wiring duct plug 2 is inserted into the wiring duct 4 first. At this time, the first attachment portion 8, the second attachment portion 9, and the tip 13 a of the electrical connection portion 13 can be inserted if they are parallel to the longitudinal direction of the wiring duct. When the operation tool 6 is rotated, the first attachment portion 8 and the second attachment portion 9 are rotated 90 degrees and locked to the attachment groove portion 12, and the wiring duct plug 2 is attached. At the same time, the tip 13a of the electrical connecting portion 13 rotates 90 degrees and contacts the conductor 10.
[0018]
Next, when the first mounting portion 8 and the second mounting portion 9 of the wiring duct plug 3 are inserted and the operation tool 7 is rotated, the wiring duct plug 2 is mounted in the same manner as the wiring duct plug 2. At this time, the upper end 41 a of the ground terminal 41 passes through the insulator 47 and comes into electrical contact with the duct body 46. As a result, the duct body 46 and the plug mounting body 28 are brought into conduction through the ground terminal 41 and can be grounded.
[0019]
According to this embodiment, since it has the 1st attaching part 8 and the 2nd attaching part 9 which interlock | cooperate with operation of the operation tools 6 and 7, the attachment intensity | strength to the wiring duct 4 can fully be ensured. Therefore, when a plurality of wiring duct plugs 2 and 3 are used in the appliance main body 1, even a large appliance can have sufficient mounting strength to ensure safety, and ensure the strength against lamp replacement and appliance deflection. Can also be planned.
[0020]
In addition, since the attachment portion 26 is provided on the side plate 25 of the plug body 27, the plug body 27 is attached to the plug attachment body 28 in the lateral direction, so that the appliance can be thinned, and tilting during attachment can be prevented. it can. Since the attached portion 26 is attached to the plug attachment body 28 with a screw 34 as an attachment tool as a screw hole, it can be supported by the shearing force of the screw 34, so that sufficient strength for attaching the device can be ensured, and the device assembly. It is easy to unify tools. For example, in the fixture assembly line of lighting fixtures, there is no line that can rarely be managed, but since there is always a driver, the torque can be easily set and the fixture assembly tool can be unified. Conventionally, an arm such as a spotlight fixture is attached to the bottom of the plug with a nut, making it difficult to reduce the thickness and securing the mounting strength.
[0021]
The plug attachment body 28 is a conductor, and the first attachment portion 8 conducts the ground of the wiring duct 4 (duct body 8) and the plug attachment body 28 when the plug body 27 is attached to the plug attachment body 28. Since the ground terminal 41 is provided, the plug mounting body 28 can be grounded without a separate process, the assembly time for the plug mounting work can be reduced, and materials such as electric wires can be reduced. There is no difference and the reliability of the ground connection work can be maintained. In this regard, in the past, a ground wire was connected by a terminal such as a screw terminal, or a ground terminal was connected to or contacted with a nut in the plug, and an instrument was screwed into the nut to secure electrical connection. there were. In this embodiment, grounding can be easily and reliably performed without applying force.
[0022]
Further, since at least one of the plugs 2 and 3 has an electrical connection portion 13 that contacts the conductor 10 of the wiring duct 4 by being inserted into the wiring duct 4 and rotating in conjunction with the operation portions 6 and 7, For example, even if the wiring duct plug 2 is attached to the wiring duct 4, the instrument body 1 may be damaged without being dropped or the instrument body 1 will not fall even if the force supporting the instrument body 1 is loosened. Therefore, it is possible to maintain the strength that can be reused, and safety can be achieved. Further, by operating the operation tools 6 and 7 at both ends of the instrument main body 1, it is possible to easily attach and detach the wiring duct 4 without detaching the parts of the instrument main body 1.
[0023]
A second embodiment of the present invention is shown in FIG. That is, this wiring duct plug is obtained by bending the ground terminal 49 into a substantially Z shape in place of the ground terminal 41 of the first embodiment. In this case, the ground terminal mounting through-hole 21 of the first insulator 16 is bent into a substantially Z shape with a stepped portion 21 a extending in the radial direction of the first insulator 16 in accordance with the shape of the ground terminal 49. In the same manner as in the first embodiment, the portion above the step bent portion 21 a passes through the center of the first insulator 16, and the portion below the step bent portion 21 a is exposed on the peripheral surface of the first insulator 16. doing. When the ground terminal 49 is inserted along the through-hole 21 for attaching the ground terminal, the portion below the step bent portion 21a comes into sliding contact with the inner peripheral surface of the hole 35 that rotatably supports the first insulator 16. For this reason, the ground terminal 41 is in electrical contact with the conductive plug main body 27, and the plug main body 27 is electrically connected to the plug mounting body 28 through the conductor screw 34, so that the wiring duct plug is connected to the wiring duct 4. When the upper end 49a of the ground terminal 49 is passed through the insulator 47 and brought into contact with the duct main body 46, the duct main body 46 of the wiring duct 4 can be conducted to the plug mounting body 28, and grounding can be performed. In this case, even if the operating tool 7 is rotated, the ground terminal 49 rotates while being in sliding contact with the plug main body 27. Therefore, the plug mounting body 28 is fixed to the wiring duct plug with the screw 34 so that the plug main body 27 is always connected. More grounding is possible.
[0024]
Other configurations and operational effects are the same as those of the first embodiment.
In the present invention, the electrical connection portion 13 may be provided in the wiring duct plug 3 instead of the wiring duct plug 2, or the electrical connection portion 13 may be provided in both. The ground terminal 41 may be provided on at least one of them, and can be provided on both. Further, when the ground terminal 41 is not required, the ground terminal 41 is removed and the wiring duct is used only for mechanical attachment. It can be plugged.
[0025]
In the second embodiment, the electrical connecting portion 13 of the first embodiment is omitted, but the first connecting portion 13a extends in the direction intersecting the extending direction of the stepped bent portion 21a with respect to the center of the insulator 16. As in the first embodiment, a pair of conductor insertion holes 22 may be formed.
In the wiring duct plug of each of the above-described embodiments, the insulators 16 and 17 are interlocked with a gear as a relay member. However, a belt or other member may be used as the relay member. Further, although the operation tools 6 and 7 are operated to rotate, a configuration in which the force of the operation tool is directly transmitted to the insulators 16 and 17 by friction or gears by a linear operation, for example, a push-pull operation, and these are rotated. But you can.
[0026]
【The invention's effect】
According to the plug for a wiring duct according to the first aspect, since the first attachment portion and the second attachment portion that are interlocked with the operation of the operation tool are provided, the attachment strength to the wiring duct can be sufficiently secured. Therefore, when a plurality of wiring duct plugs are used in an electric appliance, even a large appliance has sufficient attachment strength and can ensure safety.
[0027]
Further, since the attachment portion is provided on the side plate of the plug body, the plug body is attached to the plug attachment body in the lateral direction, so that the appliance can be thinned, and the inclination at the time of attachment can be prevented. In addition, when mounting the mounting part as a screw hole to the plug mounting body with a screw, it can be supported by the shearing force of the screw, so that sufficient strength for mounting the tool can be secured, and the tool assembly tool can be unified. Cheap.
[0028]
According to the plug for a wiring duct according to claim 2 , in addition to the same effect as that of claim 1 , the plug mounting body can be grounded without a separate process, and the time for assembling the appliance during the plug mounting operation can be reduced. At the same time, materials such as electric wires can be reduced, and work mistakes and process capability differences can be eliminated and the reliability of ground connection work can be maintained.
According to the electric appliance of claim 3, having the same effect as claim 1 or claim 2.
[Brief description of the drawings]
FIG. 1 is a perspective view of a wiring duct plug according to a first embodiment of the present invention.
FIG. 2 is a side view of a luminaire connected to a wiring duct.
FIG. 3 is a cross-sectional view of a wiring duct.
FIG. 4 is a cross-sectional view of a wiring duct plug.
FIG. 5 is a cross-sectional view of a grounding wiring duct plug.
FIG. 6 is an exploded perspective view showing the mounting of the wiring duct plug to the plug mounting body.
FIG. 7 is a sectional view of a wiring duct plug according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument body 2 Plug for wiring duct 3 Plug for wiring duct 4 Wiring duct 5 Ceiling 6 Operating tool 7 Operating tool 8 First mounting portion 9 Second mounting portion 10 Conductor 13 Electrical connection portion 25 Side plate 26 Mounted portion 27 Plug body 28 Plug mounting body 41 Ground terminal

Claims (3)

A plug body having a side plate and having a screw hole in the side plate; a plug mounting body for attaching the side plate by a screw screwed into the screw hole; and being inserted into a wiring duct and rotated by the plug body. Provided in the first attachment portion and the second attachment portion attached to the wiring duct, the operation portion for rotating the first attachment portion and the second attachment portion, and the first attachment portion. A wiring duct plug comprising: an electrical connection portion that contacts a conductor of the wiring duct by the rotation of the first mounting portion. A plug body having a side plate and having a screw hole in the side plate; a plug mounting body for attaching the side plate by a screw screwed into the screw hole; and being inserted into a wiring duct and rotated by the plug body. Provided in the first attachment portion and the second attachment portion attached to the wiring duct, the operation portion for rotating the first attachment portion and the second attachment portion, and the first attachment portion. An electrical connection that contacts the conductor of the wiring duct by the rotation of the first mounting portion;
The plug attachment body is a conductor, and the first attachment portion has a ground terminal that conducts between the ground of the wiring duct and the plug attachment body when the plug body is attached to the plug attachment body. ,
The grounding terminal is a wiring duct plug having an end portion that contacts the wiring duct and an end portion that contacts the plug mounting body directly or via a plug body and a screw . An electric appliance having the wiring duct plug according to claim 1 .

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