JP2001155534A - Plug for wiring duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plug for wiring duct capable of easily selecting a circuit with a simple structure, efficiently coping with the change of circuits, and respectively improving the efficiency in the manufacturing and in the use of the plug. SOLUTION: This plug 1 is electrically and mechanically connected with a wiring duct including plural conductors 21. A plug body 4 is composed of an insertion part 2 inserted inside the duct 20 and locked in the same, and an exposed part 3 connected with the insertion part 2 and exposed to an external part of the duct 20. The insertion part 2 is provided with a conductive part 11 electrically connectable with an arbitrary conductor 21. The plug 4 is provided with an electrical switch means 10 for switching and electrically connecting the arbitrary conductor 21 with the conductive part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution duct plug.

[0002]

2. Description of the Related Art Conventionally, in connecting a lighting device or the like used in a production line of a factory to a power distribution duct through a plug, the plug itself is rotated and electrically and mechanically connected. As disclosed in Japanese Unexamined Patent Publication No. 2-36229, there is known an apparatus in which an operation lever is rotated to simultaneously perform an electrical connection and a mechanical connection.

[0003]

However, in the case where a conductor is provided in a plurality of upper and lower stages in a power distribution duct, conventionally, a plug dedicated to the upper stage that can be connected to the upper conductor, and a lower stage that can be connected to the lower conductor are conventionally provided. Each requires a dedicated plug. For example, if the upper stage is used as a 100 volt circuit and the lower stage is used as a 200 volt circuit, and you want to change the lighting fixture for the 100 volt circuit to a lighting fixture for the 200 volt circuit, the upper stage connected to the 100 volt circuit is used exclusively. It is necessary to replace the plug with a plug dedicated to the lower stage that can be connected to a 200 volt circuit. For this reason, conventionally, there has been a problem that it is not easy to cope with a change in a circuit to be used. In addition, since it is necessary to prepare a plug exclusively for the upper stage and a plug exclusively for the lower stage, the efficiency in manufacturing and using the plug is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to facilitate circuit selection with a simple structure and to efficiently cope with circuit changes. Another object of the present invention is to provide a plug for a power distribution duct that can increase the efficiency in manufacturing and using the plug, and can prevent the plug from dropping during use.

[0005]

According to the present invention, there is provided a power distribution duct for electrically and mechanically connecting to a power distribution duct in which a plurality of conductors are accommodated. A plug, which is inserted into the power distribution duct 20 and is engaged with the power distribution duct 20, and an exposed portion 3 connected to the plug 2 and exposed to the outside of the power distribution duct 20. And a conductive portion 11 that can be electrically connected to any one of the plurality of conductors 21 of the power distribution duct 20. The plug body 4 includes a power distribution duct. Electrical switching means 10 for switching an arbitrary conductor 21 out of a plurality of conductors 20 and electrically connecting the conductor 21 to the conductive portion 11 is provided. Plug 1
However, a plurality of conductors 21 can be selected by the electrical switching means 10 and electrically connected to the conductive portion 11. Therefore, it is not necessary to prepare a plug dedicated to the upper stage or a plug dedicated to the lower stage as in the related art, and it is possible to efficiently cope with a circuit change.

In addition, a plurality of conductive portions 11 are
And a rotating shaft 12 that constitutes the electrical switching means 10 and a protrusion 13 that is displaced in accordance with the rotation of the rotating shaft 12. It is preferable that any of the conductive portions 11 of the portions 11 is pressed to protrude outward from the insertion portion 2, and in this case, the circuit change is easily and efficiently performed only by rotating the rotating shaft portion 12. In addition to this, the electric switching means 10 can be configured with a simple structure of the rotating shaft 12 and the projection 13.

Further, it is preferable that the same number of protrusions 13 as the plurality of conductive portions 11 are provided on the insertion portion 2, and different protrusions 13 press different conductive portions 11. Changes can be made efficiently.

[0008] Further, when the rotating shaft portion 12 is rotated in one direction and when it is rotated in the other direction, different projections 13 are provided.
It is preferable to press the conductive portions 11 different from each other. In this case, it is possible to easily select a circuit only by changing the rotation direction of the rotating shaft portion 12.

At the intermediate position between the rotation range in one direction and the rotation range in the other direction, all the projections 13 are configured so as not to press the conductive portion 11 outward. Independently from the operation of the conductive portion 11 by the rotating shaft portion 12, it is preferable that an operation of mechanically locking the insertion portion 2 to the power distribution duct 20 can be performed. In this case,
The power supply to the devices and the like connected to the power distribution duct 20 via the plug 1 can be stopped without removing the plug 1 from the power distribution duct 20.

On the exposed portion 3, a conductive operating portion 14 for operating the rotating shaft portion 12 and a locking operating portion for operating mechanical locking means 5 for locking the insertion portion 2 to the power distribution duct 20 are provided. 6
And the insertion part 2 is locked to the power distribution duct 20 and the conductive part 11
Is preferably provided with a lock means for locking the locking operation part 6 in a state where it is electrically connected to the conductor 21. In this case, the locking operation part 6 is made inoperable by the conductive operation part 14. By locking, it is possible to prevent the plug 1 in use from dropping.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIG. 1, the distribution duct 20 has an opening 22 opened downward.
Upper and lower conductors 21 and 21
Are arranged at an interval in the vertical direction. The number of conductors 21 is not limited to two, and may be three or more.

A plug 1 connected to the distribution duct 20
Includes a plug body 4 including an insertion portion 2 inserted into the opening 22 of the power distribution duct 20 and an exposed portion 3 connected to the insertion portion 2 and exposed to the outside of the power distribution duct 20. I have.

As shown in FIG. 2, the insertion portion 2 has a power distribution duct 20 inside an insertion portion case 9 having a rectangular shape in plan view.
A power supply member 16 having a conductive portion 11 that can be electrically connected to a conductor 21 inside the power distribution member 20 is accommodated.
Rotating shaft portion 1 for switching an arbitrary conductor 21 from among a plurality of conductors 21 in the inside and electrically connecting to conductive portion 11
2 are accommodated.

The power supply member 16 is formed by a pair of left and right elongated plate springs, for example, as shown in FIG. 3 (plan view). At the rear ends of the pair of leaf springs, fixing pieces 17a each having a substantially L-shape in a plan view and fixed to the inner surface of the insertion portion case 9 are provided. The flat conductive portions 11 project outward from the distal end portion 17c. Here, the upper and lower two-stage power supply members 16 are accommodated in the insertion portion case 9 at an interval vertically.
On the left and right sides of the insertion case 9, two upper and lower conductive part outlets 9a are provided, and the upper conductive part outlet 9a corresponds to the upper conductive part 11 and the lower conductive part outlet 9a. The conductive portion outlet 9a corresponds to the lower conductive portion 11 '.

The rotating shaft portion 12 includes two upper and lower conductors 21.
Any one of the conductors 21 is switched from the
1 (11 '). In this example, as shown in FIG. 2, an electrical switching unit 10 is configured by the rotating shaft portion 12 and a protrusion 13 that is displaced in accordance with the rotation of the rotating shaft portion 12.

In the present embodiment, the rotating shaft 12 has conductive parts 11, 1
The same number (in this example, two pairs of upper and lower pairs) of protrusions 13 and 13 'as 1' are provided integrally. Here, a pair of upper-stage protrusions 13 and 13 and a lower-stage pair of protrusions 13 ′ and 13 ′ are provided so as to protrude at intervals in the axial direction of the shaft 12 a. The upper one protruding portion 13 and the lower one protruding portion 13 ′ protrude in the same direction (the left side in FIG. 2), and the other upper protruding portion 1.
3 and the other protruding portion 13 'of the lower stage protrude in the opposite direction (the right side in FIG. 2). Each upper projection 13 individually corresponds to the upper conductive part 11, and each lower projection 13 ′ individually corresponds to the lower conductive part 11 ′.

As shown in FIGS. 1 and 2, an operation plate 14 provided with a switching knob 14 a and a cut-out recess 15, which constitute a conductive operation unit 14, is provided at the lower end of the rotary shaft 12.
2 are provided integrally, and the projection 13 differs when the rotating shaft 12 is rotated 90 ° in one direction A in FIG. 2 by the switching knob 14a and when the rotation shaft 12 is rotated 90 ° in the other direction B. , 13 ′ press different conductive parts 11, 11 ′. Also, when located at an intermediate position between the rotation range in one direction a and the rotation range in the other direction b,
All the protrusions 13 and 13 'are configured so as to be in a state in which the conductive parts 11 and 11' are not pressed outward (off state). The rotation shaft 12 is provided with a stopper (not shown) for preventing further rotation when rotated about 90 ° in one direction B or the other direction B.

Further, the plug body 4 is provided with mechanical locking means 5 for mechanically locking the insertion portion 2 to the power distribution duct 20. As shown in FIG. 4, the mechanical locking means 5 protrudes outward from the insertion portion 2 and can be locked to the locked portion 23 around the opening 22 of the power distribution duct 20.
And a locking operation section 6 provided on the exposed section 2 as shown in FIG. The locking operation section 6 is constituted by a locking lever 6a that is rotated, and when the locking lever 6a is turned down in one direction, the locking section 8 projects outside the insertion section 2 and returns. And it is configured to be drawn into the inside of the insertion portion 2. The locking lever 6a is a switching knob 14a.
The operation of the locking lever 6a can be performed separately from the operation of the switching knob 14a.

Further, the switching knob 14a and the locking lever 6a provided on the exposed portion 3 are disposed close to each other, and the insertion portion 2 is mechanically locked to the power distribution duct 20 and the conductive portion 11 is fixed. When electrically connected to the conductor 21 of the power distribution duct 20, a locking means for locking the locking lever 6a so as not to move is provided. In this example, as shown in FIG. 8B, the switching knob 14a also serves as a locking means. That is, the switching knob 14
A cut-out recess 15 is formed in about 1/3 of the outer peripheral portion of the cut-out recess 15 when the switching knob 14a is at the intermediate position, as shown in FIG.
8B is turned toward the locking lever 6a, and the locking lever 6a is cut in the direction indicated by C in FIG.
(D) As shown in (e), when the switching knob 14a is in the rotational position in one direction or the other direction, the notch recess 15 is not opposed to the locking lever 6a, and is engaged by the switching knob 14a. The rotation operation of the stop lever 6a can be prevented.

Next, an example of the operation will be described.

In connecting the plug 1 to the power distribution duct 20, first, as shown in FIG. 8A, the switching knob 14a is positioned at an intermediate position. In this state, as shown in FIG. 5B, the upper projection 13 and the lower projection 13 ′ do not press the conductive parts 11, 11 ′, and the insertion part 2 is connected to the opening of the power distribution duct 20. It can be inserted into the part 22. Thereafter, when the locking lever 6a is rotated in the direction indicated by the arrow C in FIG. 8B, the locking portion 8 accommodated in the insertion portion 2 projects outward of the insertion portion 2 and the power distribution duct 20. 5 is engaged with the locked portion 23 around the opening 22 (FIG. 5).
(State (a)), and the insertion portion 2 is mechanically connected to the power distribution duct 20. In this state, for example, as shown in FIG. 8D, when the switching knob 14a is rotated in one direction a, the upper conductive portion 11 protrudes as shown in FIG. 8 (e), the switching knob 14 is electrically connected.
When a is rotated in the other direction B, as shown in FIG. 9B, the lower conductive portion 11 ′ projects and is electrically connected to the lower conductor 21. Then, FIG.
In each state of (e), the switching lever 14a turns the locking lever 6a into a locked state in which rotation operation is not possible, so that the plug 1 can be securely and electrically and mechanically connected to the power distribution duct 20.

When the plug 1 is removed from the power distribution duct 20, the switching knob 14a is first returned to the intermediate position, and then the locking lever 6a is rotated in the direction opposite to the arrow C in FIG. 8 (b). The insertion portion 2 of the plug 1 can be easily removed from the opening 22 of the distribution duct 20, and the removal operation can be easily performed by one-touch operation.

The plurality of conductors 21 are selected by rotating the switching knob 14a, and the conductive portions 11 (11
') Can be electrically connected, so that it is possible to efficiently cope with circuit changes. In addition, since it is not necessary to prepare a plug exclusively for the upper stage and a plug exclusively for the lower stage as in the related art, it is possible to increase the manufacturing efficiency and the use efficiency of the plug 1 respectively. Also, a plurality of protrusions 13, 13 'of the same number as the upper and lower two-stage conductive portions 11, 11' are provided, and when the switching knob 14a is rotated in one direction a and in the other direction b, Different projections 13,1
Since the different conductive portions 11 and 11 'are individually pressed at 3', the circuit can be easily selected with a simple structure, and the circuit can be changed more efficiently.

While the plug is in use, the switching knob 14
The conductive portion 11 (or 11 ′) can be switched to a different conductor 21 by rotating only a. In other words, the switching knob 14a is moved from the state of FIG. 8D to the state of FIG. 8E (or vice versa) without moving the locking lever 6a.
By rotating by 80 °, the connection state between the upper conductor 21 and the upper conductive part 11 can be switched to the connection state between the lower conductor 21 and the lower conductive part 11 ′ (or the reverse state). In addition, by returning the switching knob 14a to the intermediate position, power supply to devices connected to the power distribution duct 20 via the plug 1 can be stopped without removing the plug 1 from the power distribution duct 20.
At this time, even if the switching knob 14a is rotated, the locking lever 6a does not rotate together, so that there is no fear that the plug 1 in use falls from the power distribution duct 20 and safety can be secured. In addition, since the switching knob 14a can also be used as a locking means for the locking lever 6a, there is an advantage that the number of components can be reduced and the structure can be simplified. Of course, the present invention is not limited to the case where the switching knob 14a also serves as the locking means, and it is also possible to provide a dedicated locking means for locking the locking lever 6a.

FIGS. 10 to 13 show, as another embodiment, a rotating shaft 12 and a projection 1 which constitute an electric switching means 10.
3 shows a case in which it is composed of a separate member. The means for mechanically locking the insertion case 9 to the power distribution duct 20 is the same as that in the embodiment shown in FIGS. In this example, as shown in FIG. 11, one key portion 40 protrudes from the distal end side of the rotating shaft portion 12. Key part 4
A flange-like elevating plate 41 protrudes between the control plate 14 and the operation plate 14b, and the elevating plate 41 can move up and down along a spiral portion 36 of the insertion case 9 described later. On the other hand, as shown in FIG. 12, the interior of the insertion portion case 9 is partitioned into three upper and lower chambers 30, 31, and 38, and the chambers 30, 31, and 38 communicate with each other via communication holes 35a and 35b. The lower chamber 38 has an insertion hole 35c at the bottom. The upper chamber 30 includes two upper and lower power supply members 16.
Is housed. On the ceiling surface of the upper room 30, the upper projection 1
An upper cam 32 having an elliptical shape in plan view and constituting an upper cam 32 is rotatably supported around a vertical axis by an upper bearing portion 34a, and a lower projection 13 'is formed on the bottom surface of the upper chamber 30. A lower cam 33 having an elliptical shape in plan view is rotatably supported by a lower bearing portion 34a so as to be rotatable about a vertical axis and coaxially with the upper cam 32. As shown in FIG. 13, a key groove 37 is formed inside the upper cam 32 and the lower cam 33 so as to penetrate vertically, and a key portion 40 provided on the rotating shaft portion 12 is inserted thereinto. Can be penetrated. Also, in the intermediate chamber 31,
A spiral portion 36 for moving the elevating plate 41 of the rotating shaft portion 12 in the vertical direction is provided. The spiral portion 36 has a lower inclined portion 36a, a middle horizontal portion 36b, and an upper inclined portion 36c.
And a continuous three-stage structure.

In the state shown in FIG. 10B, however, the elevating plate 41 of the rotating shaft portion 12 is moved by the middle horizontal portion 36b of the spiral portion 36.
In this state, the key portion 40 is
2 and the key groove 37 of the lower cam 33. In this state, the upper cam 32 and the lower cam 3 are locked.
3 does not press the conductive portion 11, and when the switching knob 14a of the rotating shaft portion 12 is rotated 90 ° clockwise, for example, from this state, as shown in FIG.
The elevating plate 41 rises along the upper inclined portion 36c of the spiral portion 36, and the key portion 40 comes off from the lower cam 33 and the upper cam 3
2 and the upper cam 32 is rotated by 90 ° by the rotation of the rotary shaft portion 12 to press the upper conductive portion 11, whereby the upper conductive portion 1 is pressed.
1 protrudes from the upper conductive portion outlet 9a, and is electrically connected to the upper conductor 21 (FIG. 1) of the power distribution duct 20. Conversely, when the switching knob 14a of the rotating shaft portion 12 is rotated counterclockwise by 90 degrees from the state of FIG. 10B, the elevating plate 41 tilts the lower portion of the spiral portion 36 as shown in FIG. 10C. The key portion 40 descends along the portion 36a.
Is released from the upper cam 32 and is locked only in the key groove 37 of the lower cam 33, and the rotation of the rotary shaft 12 rotates the lower cam 33 by 90 ° to press the lower conductive portion 11, The lower conductive portion 11 protrudes from the lower conductive portion outlet 9a, and is electrically connected to the lower conductor 21 (FIG. 1) of the power distribution duct 20.

In this way, by simply rotating the switching knob 14a, the upper and lower conductive parts 11 can be selected.
Moreover, with a simple structure provided with the spiral portion 36, the rotating shaft portion 12
Can be moved up and down to select a circuit. Also, the conductive portion 11
Since the cams 32 and 33 for pressing are formed separately from the rotating shaft portion 12, the structure of the rotating shaft portion 12 is simplified, and the upper cam 32 and the lower cam 33 rotatably supported in the insertion portion case 9. By providing the key groove 37 in the
By simply moving the rotary shaft portion 12 having the axis in the axial direction (up and down direction), one of the upper cams 32 and the lower cams 33 can be operated to be rotated by one key portion 40. This makes it easy to select a circuit between the conductive portion 11 and the lower conductive portion 11.

FIGS. 14 to 16 show, as still another embodiment, a case in which the rotating shaft 12 constituting the electric switching means 10 is divided into upper and lower parts. The means for mechanically locking the insertion portion case 9 to the power distribution duct 20 is the same as that in the embodiment shown in FIGS. In this example,
As shown in FIG. 16, the rotating shaft 12 includes an upper shaft 50 having a cam portion 55 having an elliptical shape in plan view, which constitutes the protrusion 13,
It is divided into a lower shaft 51 having a switching knob 14a. A cam portion 55 is integrally provided at the tip of the upper shaft 50,
A locking pin 52 penetrates the center of the upper shaft 50 in a direction perpendicular to the axis, and a first coil spring 53 is mounted between the locking pin 52 and the cam portion 55. The locking pin 52 is the lower shaft 51
Can be inserted and locked in a locking recess 52a (FIG. 14 (c)) provided at the upper end. A switching knob 14a is integrally provided at the lower end of the lower shaft 51, and a second coil spring 54 is mounted on the outer periphery of the lower shaft 51, and the lower shaft 5
The lower end 50a of the upper shaft 50 can be fitted into the upper end 51a of the first shaft 50.

On the other hand, the interior of the insertion case 9 is shown in FIG.
As shown in (a), the upper and lower chambers 30, 31, and 38 are partitioned, and each of the chambers 30, 31, and 38 is provided with a communication hole 35a, 3.
The lower chamber 38 is provided with an insertion hole 35c at the bottom thereof. Inside the upper room 30
A step power supply member 16 is accommodated. The upper shaft 50 of the rotating shaft portion 12 is accommodated from the intermediate chamber 31 to the upper chamber 30,
The upper end of the first coil spring 53 is supported on the ceiling surface of the intermediate chamber 31. Further, as shown in FIG. 14B, locking pins 52 projecting from both sides of the upper shaft 50 can be inserted into a part of the periphery of the communication hole 35b for communicating the intermediate chamber 31 and the lower chamber 38. The locking pin insertion opening 52b is recessed,
The locking pin 52 passes through the locking pin insertion opening 52b.
Is vertically movable. On the other hand, the lower shaft 51 is the lower chamber 3
8, and the upper end of the second coil spring 54 is supported on the ceiling surface of the lower chamber 38.

In the state shown in FIG. 14A, the locking pin 52 is positioned below the locking pin insertion opening 52b and locked in the locking recess 52a of the lower shaft 51. In this state, the cam portion 55 is located at a position facing the lower conductive portion 11 and does not press the lower conductive portion 11.
The conductive portion 11 does not protrude from the conductive portion outlet 9a. From this state, the switching knob 14 of the rotary shaft 12
If a is rotated 90 ° clockwise from the intermediate position, for example,
As shown in FIG. 14C, the lower shaft 51 and the upper shaft 50 are both rotated rightward by 90 ° by the locking pin 52, and the cam portion 55 presses the lower conductive portion 11 so that the lower shaft 51 and the upper shaft 50 are pressed. The conductive portion 11 protrudes from the lower conductive portion outlet 9a, and can electrically contact the lower conductor 21 (FIG. 1) of the power distribution duct 20. On the other hand, by performing an operation of pushing the switching knob 14a upward without rotating the switching knob 14a and an operation of rotating the switching knob 14a counterclockwise from the state of FIG. It can be made to protrude from the part drawer opening 9a. That is, FIG.
As shown in (a), when the switching knob 14a is pushed up as shown by an arrow E while maintaining the intermediate position, the locking pin 5
2 moves upward through the locking pin insertion opening 52b, and the cam portion 55 rises to a position facing the upper conductive portion 11. Thereafter, as shown in FIG. 15B, when the switching knob 14a is rotated 90 ° counterclockwise from the intermediate position, the lower shaft 51 and the upper shaft 50 are both rotated 90 ° counterclockwise by the locking pin 52. The cam portion 55 is connected to the upper conductive portion 1.
By pressing 1, the upper conductive portion 11 protrudes from the upper conductive portion outlet 9a, and can electrically contact the upper conductor 21 (FIG. 1) of the distribution duct 20. In this state, as shown in FIG. 15C, the locking pin 52 is located at a position disengaged from the locking pin insertion opening 52a, so that the cam portion 55 holds the upper conductive portion 11 in a pressed state. Is done. When the user releases the switching knob 14a in this state, the lower shaft 51 is pushed downward by the second coil spring 54 to separate from the upper shaft 50, and the locking pin 52
15 (d) is removed from the locking recess 52a.
As shown in (5), the operation plate 14b of the switching knob 14a of the lower shaft 51 is in a state of being elastically contacted with the peripheral portion of the insertion hole 35c of the lower chamber 38.

As described above, by combining the rotating operation and the pushing operation of the switching knob 14a, the upper and lower conductive portions 11 can be selected, and the rotating shaft portion 12 is divided into an upper shaft 50 and a lower shaft 51. With this simple structure, the circuit can be selected by moving the cam portion 55 up and down. In addition, a single cam portion 55 can press the upper conductive portion 11 and the lower conductive portion 11 individually to select a circuit while having a single cam portion 55 for pressing the conductive portion 11. It is.

[0033]

As described above, according to the first aspect of the present invention, there is provided a power distribution duct plug electrically and mechanically connected to a power distribution duct in which a plurality of conductors are accommodated. A plug body consisting of an insertion portion inserted into the distribution duct and locked to the distribution duct, and an exposed portion connected to the insertion portion and exposed to the outside of the distribution duct is provided. Is provided with a conductive portion that can be electrically connected to any of the plurality of conductors of the distribution duct, and the plug main body is electrically connected to the conductive portion by switching any of the plurality of conductors of the distribution duct. Is provided, electrical switching means can be used to select a plurality of conductors and electrically connect to the conductive portion. It is necessary to prepare a dedicated plug Not so efficiently can correspond to a circuit change, further on the production of plug efficiency and Usage efficiency can be increased, respectively.

According to a second aspect of the present invention, in addition to the effects of the first aspect, a plurality of conductive portions, a rotating shaft constituting electric switching means, and rotation of the rotating shaft are provided on the insertion portion. And a projection which is displaced by the rotation of the rotating shaft, the projection presses an arbitrary conductive part of the plurality of conductive parts and protrudes outward from the insertion part by rotation of the rotating shaft. The circuit can be easily and efficiently changed only by rotating the unit, and the electrical switching means can be configured with a simple structure of the rotating shaft and the projection, thereby improving the manufacturing efficiency.

According to a third aspect of the present invention, in addition to the effect of the second aspect, the insertion portion is provided with the same number of protrusions as the plurality of conductive portions, and different protrusions press different conductive portions. Thus, the circuit can be changed efficiently with a simple structure.

According to a fourth aspect of the present invention, in addition to the effect of the third aspect, different projections are provided when the rotating shaft is rotated in one direction and when the rotating shaft is rotated in the other direction. Since the part is pressed, the circuit can be easily selected simply by changing the rotation direction of the rotating shaft part, and the circuit can be changed more efficiently.

According to a fifth aspect of the present invention, in addition to the effects described in any one of the first to fourth aspects, an intermediate portion between the rotation range in one direction and the rotation range in the other direction is provided. In the position, all the protrusions are configured so as not to press the conductive part outward, and the insertion part is mechanically locked to the power distribution duct independently of the operation of the conductive part by the rotating shaft part. Since the operation can be performed, it is possible to stop power supply to a device or the like connected to the power distribution duct via the plug without removing the plug from the power distribution duct. In addition, as long as the operation unit for conduction is not operated, the plug in use does not drop from the power distribution duct unless the operation unit for locking is operated, and safety can be secured.

According to a sixth aspect of the present invention, in addition to the effect of any one of the first to fifth aspects, a conductive operating portion for operating the rotating shaft portion and an insertion portion are provided on the exposed portion. A locking operation part for operating mechanical locking means for locking to the distribution duct, and a locking operation part in a state where the insertion part is locked to the distribution duct and the conductive part is electrically connected to the conductor. Since the lock operation means is provided with a locking means for locking, it is possible to prevent the plug in use from being dropped by locking the locking operation part inoperable by the conductive operation part, and to lock the conductive operation part. By also using as a means, the number of parts can be reduced and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the rotation shaft and a power supply member according to the first embodiment.

FIG. 3 is a plan view of a rotating shaft and a power supply member according to the first embodiment.

FIG. 4A is a cross-sectional view illustrating a state in which an upper conductive portion of the above is electrically in contact with an upper conductor, and FIG.
FIG. 9 is a cross-sectional view illustrating a protruding state of a lower conductive portion.

5A is a cross-sectional view illustrating an off state in which both the upper conductive part and the lower conductive part do not protrude, and FIG. 5B is a cross-sectional view illustrating the state of the insertion part in FIG. is there.

FIG. 6A is a cross-sectional view illustrating a state in which the lower conductive portion of the above is electrically in contact with the lower conductor, and FIG. 6B is a cross-sectional view of FIG.
FIG. 9 is a cross-sectional view illustrating a protruding state of a lower conductive portion.

FIGS. 7A to 7C are perspective views illustrating the operation of a switching knob and a locking lever according to the first embodiment.

FIG. 8A is an explanatory view showing a state in which the switching knob is at an intermediate position and the locking lever is at a release position, and FIG.
(A) is a partially cutaway view of (a), (c) is an explanatory view showing a state in which the locking lever is moved in the locking direction, and (d) is a clockwise rotation of the switching knob from the intermediate position. FIG. 7E is an explanatory diagram of a state in which the switching knob is rotated counterclockwise from an intermediate position.

9A is a perspective view illustrating a state of FIG. 8D, and FIG. 9B is a perspective view illustrating a state of FIG. 8E.

10A and 10B show another embodiment, in which FIG. 10A is a cross-sectional view illustrating a state in which an upper conductive portion protrudes, FIG. 10B is a cross-sectional view illustrating a state in which neither upper nor lower conductive portions protrude, c)
FIG. 3 is a cross-sectional view illustrating a state where a lower conductive portion protrudes.

11 (a) is a plan view of the rotating shaft portion of FIG. 10, and FIG. 11 (b)
Is a side view.

FIG. 12 is a sectional view of the insertion portion case of FIG. 10;

FIGS. 13A to 13C are a plan view, a side view, and a front view of the upper cam (or lower cam) of FIG.

14A and 14B show still another embodiment, in which FIG. 14A is a cross-sectional view illustrating an off state in which a conductive portion does not protrude, and FIG.
(C) is a cross-sectional view illustrating a state in which the switching knob is rotated clockwise by 90 ° to project the lower conductive portion.

FIG. 15A is a cross-sectional view illustrating a state in which the above-described switching knob is pushed upward, and FIG. 15B is a state in which the pushed-up switching knob is rotated 90 ° counterclockwise to project the upper conductive portion. (C) is a cross-sectional view of FIG.
FIG. 4D is a cross-sectional view taken along a line B, and FIG.

16A is an exploded side view of the upper shaft, FIG. 16B is a plan view of the upper shaft after assembly, and FIG. 16C is an exploded side view of the upper shaft and the lower shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 2 Insertion part 3 Exposed part 4 Plug main body 5 Mechanical locking means 6 Locking operation part 8 Locking part 9 Insertion part case 9a Conductive part draw-out opening 10 Electrical switching means 11 Conductive part 12 Rotation shaft part DESCRIPTION OF SYMBOLS 13 Projection part 14 Conduction operation part 16 Power supply member 20 Distribution duct 21 Conductor 23 Locked part

Claims (6)

[Claims] A power distribution duct plug that is electrically and mechanically connected to a power distribution duct in which a plurality of conductors are housed, wherein the plug is inserted into the power distribution duct and locked to the power distribution duct. A plug body consisting of an insertion portion that is connected to the insertion portion and an exposed portion that is connected to the insertion portion and exposed to the outside of the power distribution duct;
The insertion portion is provided with a conductive portion that can be electrically connected to any of the plurality of conductors of the distribution duct, and the plug body is configured to switch any conductor from among the plurality of conductors of the distribution duct to conduct the conduction. A plug for a power distribution duct, comprising: an electric switching unit for electrically connecting the power supply unit to the power supply unit. 2. An insertion portion accommodating a plurality of conductive portions, a rotating shaft constituting electric switching means, and a projection which is displaced in accordance with the rotation of the rotating shaft. 2. The power distribution duct plug according to claim 1, wherein the projection presses an arbitrary conductive part of the plurality of conductive parts by rotation so as to protrude outward from the insertion part. 3. The plug for a distribution duct according to claim 2, wherein the insertion portion has the same number of protrusions as the plurality of conductive portions, and different protrusions press different conductive portions. 4. The distribution duct according to claim 3, wherein different projections press different conductive portions when the rotating shaft is rotated in one direction and when the rotating shaft is rotated in the other direction. plug. 5. A structure in which all protrusions do not press the conductive portion outward at an intermediate position between the rotation range in one direction and the rotation range in the other direction, and the rotation shaft is The power distribution according to any one of claims 1 to 4, wherein an operation of mechanically locking the insertion portion to the power distribution duct can be performed independently of the operation of the conductive portion by the portion. Duct plug. 6. A conductive operating part for operating the rotating shaft part, a locking operating part for operating mechanical locking means for locking the insertion part to the power distribution duct, and an insertion part for the power distribution duct. 6. A locking means for locking the locking operation part in a state where the attachment part is locked and the conductive part is electrically connected to the conductor. The plug for the described distribution duct.