JP3605290B2 - Plug for wiring duct - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a plug for a wiring duct that is detachably attached at an arbitrary position along a longitudinal direction of the wiring duct.
[0002]
[Prior art]
Conventionally, a pair of conductors are laid on both inner side surfaces of a duct body facing along the longitudinal direction, and a wiring duct having an opening groove having a substantially uniform width along the longitudinal direction is provided on the bottom surface. There is provided a plug for a wiring duct which is detachably attached at an arbitrary position along the direction (for example, see Japanese Patent Application Laid-Open No. 57-172669 or Japanese Utility Model Application Laid-Open No. 59-90376).
[0003]
As shown in FIG. 9A, the plug for the wiring duct includes a substantially rectangular plate-shaped mounting plate 50 formed to have a width substantially equal to the opening groove 32 of the wiring duct 30, and a conductor (not shown) of the wiring duct 30. ) Is connected to a plug body (not shown) so as to be rotatable integrally with a plug body (not shown). Then, a part of the plug main body on which the mounting plate 50 and the blade 51 are axially mounted is inserted into the duct main body 31 from the opening groove 32, and the mounting plate 50 and the blade 51 are rotated by approximately 90 degrees. The mounting plate 50 is engaged with the vicinity of the opening edge of the opening groove 32 so that the plug body is attached to the duct body 31, and both ends of the plug blade 51 respectively contact the conductors laid on both inner side surfaces of the duct body 31. It will conduct.
[0004]
Thus, a lighting device such as a spotlight is attached to the plug body, and power can be supplied from the conductor of the wiring duct 30 to the lighting device via the plug.
[0005]
[Problems to be solved by the invention]
However, since the width of the mounting plate 50 must be smaller than the width of the opening groove 32 of the duct body 31, if the mounting plate 50 has a substantially rectangular shape as in the conventional example, the vicinity of the opening edge of the opening groove 32 However, there is a problem in that the area for engaging with the fixing member is limited, and a sufficient attachment holding force cannot be obtained. That is, in the above-described conventional example, since the mounting and holding force of the plug with respect to the wiring duct 30 is not sufficient, a load resistance sufficient to mount a heavy-weight lighting fixture was not obtained.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a plug for a wiring duct capable of increasing a holding force on a wiring duct and improving load-bearing performance by solving the above problem.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a wiring duct in which one or more power supply conductors are provided in a duct main body having an opening groove having a substantially uniform width along the longitudinal direction. A plug for a wiring duct detachably attached at an arbitrary position along a longitudinal direction, wherein the plug main body has at least a part inserted into the opening groove of the wiring duct, and a contact conductive member provided in the plug main body and connected to the conductor. And a mounting plate which is inserted into the duct main body from the opening groove, and which detachably engages near the opening groove edge of the duct main body to attach the plug main body to the duct main body, the mounting plate comprising: Any of the internal angles is formed in a substantially parallelogram plate shape having an acute angle, and is provided on the plug main body so as to be rotatable within a range of less than 90 degrees within a plane substantially orthogonal to the direction of insertion into the opening groove. It is pivotally attached to the pivot shaft Both were characterized by mounting plate operating lever for rotating operating the pivot shaft is slidably projected from the slide groove provided on the side surface of the plug body, generally rectangular mounting such as in the prior art Compared with the plate, the area of the mounting plate engaged with the vicinity of the opening groove edge of the duct main body can be increased, and the load holding performance with respect to the duct main body can be increased to improve the load bearing performance. Further, since the rotation angle of the mounting plate operation lever for engaging the mounting plate is less than 90 degrees, the operability can be improved as compared with the conventional example.
[0008]
In addition, as in the invention of claim 2, if one side of the mounting plate is brought into contact with the inner side surface of the duct main body in the engaged state with the duct main body, the mounting plate is connected to the vicinity of the opening groove edge of the duct main body. The area of the mounting plate to be combined can be further increased, and the load bearing performance can be further improved.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
Embodiment 1 of the present invention will be described in detail with reference to FIGS.
[0010]
The wiring duct 30 is a so-called lighting duct, which is provided on a ceiling surface (not shown) as shown in FIG. 6 and in which the lighting fixture 40 is attached to an arbitrary position in the longitudinal direction by the wiring duct plug 1 according to the present invention. is there.
[0011]
The duct main body 31 is formed in a substantially rectangular cylindrical shape, and is provided with an opening groove 32 having a substantially uniform width dimension along the longitudinal direction substantially in the center of the lower surface. As shown in FIG. 1, projecting bases 34 are provided on both inner side surfaces of the duct main body 31 along the longitudinal direction, and a flat conductor 33 for power supply is laid at a tip portion of the projecting base 34. ing. Further, a rectangular conductor 35 for grounding is laid along the longitudinal direction substantially at the center of the inner top surface facing the opening groove 32 of the duct main body 31. At the lower end of the duct main body 31, a projecting strip 36 for regulating the mounting direction of the wiring duct plug (hereinafter simply referred to as "plug") 1 with respect to the wiring duct 30 is provided as described later. ing.
[0012]
As shown in FIG. 6, the lighting fixture 40 is attached to the lower part of the plug 1, and the lighting fixture 40 is detachably attached to the wiring duct 30 at the upper part, and is illuminated via the rectangular conductors 33, 33 laid in the wiring duct 30. 40.
[0013]
As shown in FIG. 2, the plug main body 2 is formed in a substantially box shape by a synthetic resin, and an insertion portion 2 a inserted into the opening groove 32 of the wiring duct 30 is protruded from the upper surface. The insertion portion 2a has first and second slits 5 and 6 formed on both side surfaces along the longitudinal direction. Further, an earth electrode 13 is provided on the upper surface of the insertion portion 2a so as to be in contact with and conductive to the rectangular conductor 35 for grounding of the wiring duct 30 (see FIGS. 1 and 2).
[0014]
The mounting plate 3 is rotatably mounted in the first slit 5. That is, a rotating shaft (not shown) is fixed substantially at the center of the mounting plate 3, and a mounting plate operating lever 7 for rotating the rotating shaft is moved from a slide groove 8 provided on a side surface of the plug body 2. The rotating shaft is rotated by operating the mounting plate operation lever 7 so that both ends of the mounting plate 3 protrude from the first slit 5 so as to freely advance and retreat. (See FIGS. 3 and 4).
[0015]
On the other hand, a locking piece 9 and a pair of blades 4 that rotate integrally with the locking piece 9 are rotatably mounted in the second slit 6. That is, a rotating shaft (not shown) is fixed substantially at the center of the locking piece 9, and a blade operating lever 11 for rotating the rotating shaft is provided in a slide groove 12 provided on a side surface of the plug body 2. The slide shaft is slidably protruded from the second blade 6. By operating the blade operating lever 11, the rotating shaft is rotated. With this rotation, both ends of the blade 4 and the locking piece 9 are moved from the second slit 6. It is designed to protrude freely.
[0016]
As shown in FIG. 1, the metal mounting plate 3 is formed in a substantially parallelogram plate shape in which one of the internal angles is an acute angle (= θ), and is attached to the rotating shaft at substantially the center as described above. It is rotatable in a plane substantially perpendicular to the direction in which the insertion portion 2a is inserted into the opening groove 32 of the duct main body 31. The height of the mounting plate 3 is set to an appropriate size that is not larger than the width of the opening groove 32. Thus, if the longitudinal direction of the mounting plate 3 is substantially aligned with the longitudinal direction of the opening groove 32, the mounting plate 3 is almost completely accommodated in the first slit 5 of the insertion portion 2a as shown in FIG. You. When the mounting plate operation lever 7 is operated in a state where the insertion portion 2a is inserted into the opening groove 32, the mounting plate 3 is rotated, and both ends of the mounting plate 3 advance from the first slit 5, and FIG. As shown in FIG. 1A, both ends of the mounting plate 3 are engaged with the vicinity 32a of the opening groove edge of the duct main body 31.
[0017]
By the way, the mounting holding force (load resistance) of the plug 1 increases as the area of the end portion of the mounting plate 3 which engages with the vicinity of the opening groove edge 32a of the duct main body 31 (hereinafter referred to as “engaging area”) increases. It is clear. Therefore, by making the mounting plate 3 a substantially parallelogram having any acute angle, the engaging area of the mounting plate 3 can be reduced as compared with the case where the mounting plate 50 is substantially rectangular as in the conventional example. Can be increased. That is, in the substantially rectangular mounting plate 50 as in the conventional example, the width dimension of the opening groove 32 can be smaller than the width A, but in the substantially parallelogram mounting plate 3 as in the present embodiment, FIG. As shown in the figure, the width dimension C along the longitudinal direction of the wiring duct 30 at the time of engagement can be made larger than the width dimension A of the opening groove 32. As a result, the engagement area of the mounting plate 3 can be made larger than that of the conventional example. It is possible to increase the load-carrying performance.
[0018]
In addition, in order to engage both ends of the mounting plate 3 with the vicinity 32a of the opening groove edge, the mounting plate 50 had to be rotated by approximately 90 degrees in the conventional example, but in the present embodiment, the angle (less than 90 degrees) was required. It is sufficient to rotate the mounting plate 3 by an angle substantially equal to the acute angle θ of the mounting plate 3), and the rotation range of the mounting plate 3 becomes narrower than in the conventional example, and the operation range of the mounting plate operation lever 7 becomes narrower. This has the advantage that operability can be improved. Further, as shown in FIG. 5, the distance D between both ends of the mounting plate 3 in the engaged state can be made larger than that of the conventional example, so that the plug 1 can be inserted in the longitudinal direction (indicated by the arrow (1) in FIG. 6). Direction), the rattling of the plug 1 can be suppressed.
[0019]
In the present embodiment, the operation procedure of the mounting plate operation lever 7 and the blade operating lever 11 is regulated by a link mechanism (not shown). That is, in a non-attached state as shown in FIG. 3 (a state in which the mounting plate 3 is stored in the first slit 5 and the blade 4 and the locking piece 9 are stored in the second slit 6), As shown in FIG. 4, the blade operating lever 11 cannot be operated unless both ends of the mounting plate 3 are advanced from the first slit 5 as shown in FIG. 4. Therefore, as shown in FIG. 4, in a state where the plug 1 is engaged with the wiring duct 30 by the mounting plate 3 and the power supply is stopped without bringing the blade 4 into contact with the rectangular conductor 33, the opening groove 32 of the wiring duct 30 is stopped. The plug 1 can be freely moved along the wiring plug 30, and the blade operating lever 11 is operated at a desired position in the longitudinal direction of the wiring plug 30 so that the blade 4 is brought into contact with the rectangular conductor 33 so as to be in conduction with the rectangular conductor 33 and the locking piece 9. Can be fixed to the wiring duct 30 and power can be supplied to the lighting fixture 40 attached to the plug 1.
[0020]
On the other hand, in the state where the plug 1 is attached to the wiring duct 30, it is necessary to operate the blade operating lever 11 first to separate the blade 4 from the rectangular conductor 33 before operating the mounting plate operating lever 7. When the weight of the lighting fixture 40 is large, it is possible to prevent the mounting plate 3 from being disengaged first and apply an excessive load to the locking piece 9. ing.
[0021]
An engaging step 14 is formed on one side edge of the plug body 2 along the longitudinal direction, the engaging step 14 engaging with a ridge 36 projecting from the lower surface end of the duct body 31. Thus, the plug 1 can be mounted only in the direction in which the protruding strip 36 of the duct main body 31 is engaged with the engaging step portion 14, whereby the mounting direction of the plug 1 with respect to the wiring duct 30 is restricted. The connection direction of the lighting equipment 40 can be matched to the voltage side and the ground side of the two rectangular conductors 33.
[0022]
(Embodiment 2)
FIG. 7 shows a second embodiment of the present invention. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.
[0023]
This embodiment is characterized in that the mounting plate 3 is formed in such a size that both short sides of the mounting plate 3 are in contact with the inner side surface of the duct main body 31 in the engaged state as shown in FIG.
[0024]
Thus, in the first embodiment, there is a gap between the shorter sides of the mounting plate 3 and the inner side surface of the duct body 31 in the engaged state. Since it is in contact with the inner side surface, the engagement area of the mounting plate 3 can be increased by maximizing the inner width dimension B (see FIG. 5) of the wiring duct 30, and is more resistant than the first embodiment. There is an advantage that load performance can be improved. Since the two sides abut against the inner side surface of the duct main body 31, respectively, when a moment is applied to the plug 1 in the short width direction (the direction of arrow {circle around (2)} in FIG. 6), the plug 1 becomes loose. Sticking can be suppressed.
[0025]
(Embodiment 3)
FIG. 8 shows a third embodiment of the present invention. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the configuration that is a feature of the present embodiment will be described.
[0026]
This embodiment is characterized in that, as shown in FIG. 8, the mounting plate 3 and the blade 4 are pivotally mounted on the same rotating shaft (not shown) so as to be integrally rotated.
[0027]
Here, in a state where the mounting plate 3 is housed in the insertion portion 2a of the plug body 2, the longitudinal direction of the blade 4 is angled with respect to the short width direction of the wiring duct 30 by an angle θ (see FIG. 8A). (The angle equal to the inner angle of the mounting plate 3). In this state, as shown in FIG. 8B, when the mounting plate 3 is rotated by the angle θ and both ends are engaged with the vicinity 32a of the opening groove edge, the blade 4 is moved with respect to the longitudinal direction of the wiring duct 30. Can be made substantially orthogonal.
[0028]
According to the present embodiment, there is an advantage that operability can be improved because the mounting plate 3 and the blade 4 rotate integrally and the rotation angle is less than 90 degrees.
[0029]
【The invention's effect】
As described above, the present invention provides a wiring duct in which one or a plurality of power supply conductors are provided in a duct main body having an opening groove having a substantially uniform width dimension along the longitudinal direction along the longitudinal direction of the opening groove. A plug body that is detachably attached at an arbitrary position, the plug body having at least a part inserted into the opening groove of the wiring duct, and a contact that is provided in the plug body and that is in contact with and conductive to the conductor. A mounting plate that is inserted into the duct main body from the opening groove and detachably engages with the vicinity of the opening groove edge of the duct main body to mount the plug main body to the duct main body. Is formed in a substantially parallelogram plate shape having an acute angle, and is rotatably provided on the plug main body so as to be rotatable within a range of less than 90 degrees in a plane substantially orthogonal to the direction of insertion into the opening groove. with it is pivotally attached to, the pivoting The so mounting plate operating lever for rotating operation is slidably projected from the slide groove provided on the side surface of the plug body, as compared to the substantially rectangular mounting plate as in the prior art, the duct body It is possible to increase the area of the mounting plate that engages in the vicinity of the edge of the opening groove, and it is possible to increase the mounting holding force with respect to the duct main body and improve the load bearing performance. Further, since the rotation angle of the mounting plate operation lever for engaging the mounting plate is less than 90 degrees, the operability is improved as compared with the conventional example.
[0030]
According to the second aspect of the present invention, since the mounting plate is configured such that one side abuts on the inner side surface of the duct main body in the engagement state with the duct main body, the mounting plate engages near the opening groove edge of the duct main body. There is an effect that the load bearing performance can be further improved by further increasing the area of the plate.
[Brief description of the drawings]
FIGS. 1A and 1B show a first embodiment, in which FIG. 1A is a front view of a state where the antenna is attached to a wiring duct, and FIG. 1B is a sectional view taken along line XX of FIG.
FIG. 2 is an external perspective view of the same.
FIG. 3 is a top view showing a state in which the mounting plate is stored.
FIG. 4 is a top view showing a state where the mounting plate is advanced.
FIG. 5 is an explanatory diagram for explaining the operation of the above.
FIG. 6 is a perspective view showing a state where the wiring duct is attached to the wiring duct;
FIGS. 7A and 7B show the second embodiment, in which FIG. 7A is a front view of a state in which the antenna is attached to a wiring duct, and FIG. 7B is a sectional view taken along line XX of FIG.
8A and 8B show a third embodiment, in which FIG. 8A is a top cross-sectional view in a state where the mounting plate is not engaged, and FIG. 8B is a top cross-sectional view in a state where the mounting plate is engaged.
9A and 9B show a conventional example, in which FIG. 9A is a top sectional view in a state where a mounting plate is not engaged, and FIG. 9B is a top sectional view in a state where a mounting plate is engaged.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plug 2 Plug main body 3 Mounting plate 3a End 4 Plug blade 30 Wiring duct 31 Duct main body 32 Opening groove 32a Near the opening groove edge

Claims (2)

It is detachably attached to a wiring duct in which one or a plurality of power supply conductors are disposed in a duct main body having an opening groove having a substantially uniform width dimension along the longitudinal direction at an arbitrary position along the longitudinal direction of the opening groove. A plug main body, at least a part of which is inserted into the opening groove of the wiring duct, a contact provided in the plug main body and in contact with the conductor, and a plug inside the duct main body. And a mounting plate which is detachably engaged with the vicinity of an opening groove edge of the duct main body to attach the plug main body to the duct main body, wherein the mounting plate has an acute angle at any of its internal angles. The plug is formed in a plate shape , and is rotatably mounted on a rotation shaft provided on the plug main body so as to be rotatable within a range of less than 90 degrees within a plane substantially perpendicular to the direction of insertion into the opening groove. For rotating the rotating shaft Plug wiring duct with plate operating lever, characterized in that it is slidably projected from the slide groove provided on the side surface of the plug body. A plug for a wiring duct, wherein one side of the mounting plate abuts on an inner side surface of the duct main body in an engaged state with the duct main body.

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