JP2003333725A - Wiring duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring duct which can be manufactured at a low cost and can connect a plug to be plugged in with an earth easily without fail. <P>SOLUTION: An aperture 10 is made longitudinally in a metallic long hollow case 1, and a long conductor 21 is retained with a conductor retaining member 5 made of synthetic resin attached to the wall face 1 within the case 1. An earth conductor 22 is attached to the face 51b on the opposite side to the mounting face 51 to a wall face 1a of the rear plate 51 of a conductor retaining member 5. Through holes 50, 14, and 22a, which lead to one another, are made in a rear plate 51, the case 1, and the earth conductor 22, respectively. The shank 61 of a fastening member 6 is passed into the above through holes 50, 14, and 22 leading to one another, and the outer wall face 1b of the case 1 and the earth conductor 22 are locked with the locks 62a and 62b made at both ends of that shank 61. The through hole 50 of the conductor retaining member 5 is provided with a conduction assisting member 23 which assists the conduction between the case 1 and the earth conductor 22. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a wiring duct system in which a conductor is held inside a long hollow case, and a plug is inserted into and attached to the inside of the case through an opening of the case to contact the conductor. It relates to a wiring duct.

[0002]

2. Description of the Related Art Conventionally, a wiring duct system to which electric equipment such as an outlet is attached has been used. For example, the plug 3'of an electric device, which is provided with an outlet or the like, is installed and installed in an information rack or the like, as shown in FIG. To use.

As shown in FIG. 21, the wiring duct D has a long hollow shape, and an opening 10 is formed in its longitudinal direction. A pair of long conductors 21 are held inside the wiring duct D, and the plug 3 ′ is inserted into the wiring duct D through the opening 10 in a predetermined direction to form a pair of plug blades of the plug 3 ′. 35 is brought into contact with the conductor 21 of the wiring duct D to energize the electric equipment of the plug 3 '.

To insert and mount the plug 3'into the wiring duct D, first insert the plug 3'in the wiring duct D through the opening 10 in a predetermined direction (see FIG. 21), and then insert the plug 3 '. It rotates 90 ° to bring the blade 35 into contact with the conductor 21 of the wiring duct D, and the locking portion 34 is locked to the inner wall surface of the peripheral edge of the opening 10 (see FIG. 22).

By the way, in the conventional wiring duct D, a metal core material is coated with a synthetic resin and integrally molded, so that the manufacturing cost of the wiring duct D is increased.

Therefore, if the wiring duct D is made of metal only in order to reduce the manufacturing cost, it becomes impossible to hold the pair of conductors 21, and if the wiring duct D is made of synthetic resin only, the wiring duct D cannot be held. D becomes insufficient in strength.
Further, it is conceivable that a member made of a synthetic resin for holding the conductor 21 is simply fitted inside the outer shell made of metal, but in such a case, it is inserted into the wiring duct D and mounted. Since a member made of synthetic resin is interposed between the plug 3'and the outer shell made of metal, it is difficult to make the ground connection of the plug 3 '.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to manufacture at low cost and to easily and surely insert the plug to be grounded. It is an object to provide a wiring duct that can be connected.

[0008]

In order to solve the above-mentioned problems, a wiring duct according to the present invention has an opening 10 formed in a longitudinal direction in a long hollow case 1 and a long conductor 21 inside the case 1. In the wiring duct for holding, the case 1 is made of metal, the conductor holding member 5 made of synthetic resin is attached to the wall surface 1a inside the case 1, and the conductor 21 is held by the conductor holding member 5. Of the back plate portion 51 of the conductor holding member 5 attached to the wall surface 1a of the conductor 51 is attached to the surface 51b on the opposite side of the attachment surface 51a of the conductor holding member 5 to the wall surface 1a. The back plate portion 51 and a portion of the case 1 to which the back plate portion 51 is attached and the ground conductor 2
2 is formed with through holes 50, 14, 22a that communicate with each other, and a shaft portion 61 that is inserted into the through holes 50, 14, 22a that communicate with each other, and a case 1 formed at both ends of the shaft portion 61 are formed. The conductor holding member 5 is fastened to the case 1 with a fastening member 6 including locking portions 62a and 62b that are locked to the outer wall surface 1b and the ground conductor 22, respectively.
The through hole 50 is provided with a conduction auxiliary member 23 for assisting conduction between the case 1 and the ground conductor 22. With such a structure, the metal case 1 and the conductor holding member 5 made of synthetic resin can be separately formed and can be manufactured at low cost, and the conductor holding member 5 is made of synthetic resin. Nevertheless, the case 1 and the ground conductor 22 can be surely conducted to each other, and the fastening member 6 can easily fasten the ground conductor 22, the conductor holding member 5, the conduction auxiliary member 23, and the case 1. It becomes possible to do.

The inner diameter of the through hole 50 of the conductor holding member 5 is formed larger than the inner diameters of the through hole 22a of the ground conductor 22 and the through hole 14 of the case 1, and the outer diameter of the conduction assisting member 23 is set to the above conductor. The holding member 5 is formed to have substantially the same diameter as the inner diameter of the through hole 50, and the conduction assisting member 23 has a hole portion 23a having an inner diameter substantially equal to the inner diameter of the through hole 22a of the ground conductor 22 and the inner diameter of the through hole 14 of the case 1. It is preferable that the conductive auxiliary member 23 is formed and the conduction assisting member 23 is fitted into the through hole 50 of the conductor holding member 5. With such a configuration, the conduction auxiliary member 23 can be easily arranged.

Further, it is preferable that the outer diameter of the conduction assisting member 23 is formed to be substantially the same as the outer diameter of the engaging portion 62a which is engaged with the ground conductor 22 of the fastening member 6. With such a configuration, the fastening force acts on the entire surface of the conduction auxiliary member 23, and the conduction auxiliary member 23 can be reliably fixed.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings. The wiring duct system of the present invention is, for example, arranged on a rack Ra such as an information rack as shown in FIG. 19 or as a single unit with a hanging tool Ha as shown in FIG. It is used to insert and install the plug of electrical equipment such as an outlet formed in the duct. The wiring duct and the plug will be described below.

As shown in FIGS. 2 to 4, the wiring duct is mainly composed of a case 1 and a conductor 21, and the conductor 21 is held by a conductor holding member 5 mounted inside the case 1.

As shown in FIG. 2, the case 1 has a long plate-shaped back wall portion 11, and both side edges (that is, longitudinal edges) of the back wall portion 11 from the back wall portion 11 to the back wall portion 11. From a pair of opposing side wall portions 12 extending substantially vertically and the front side edge portions of the both side wall portions 12 (that is, the end edges on the side opposite to the back wall portion 11) to the end edges of the side wall portions 12 facing each other. It is composed of a pair of front wall portions 13 extending substantially perpendicularly to the side wall portion 12 (that is, substantially parallel to the back wall portion 11), and the space between the end edges 13a of both front wall portions 13 is the inside of the case 1. It is an elongated hollow member having a substantially rectangular cross section that serves as an opening 10 that communicates the inside with the outside. The case 1 is made of metal, and the opening 10 is formed in the longitudinal direction of the case 1 as can be seen from FIG. A through hole 14 through which a fastening member 6 for mounting the conductor holding member 5 is inserted is formed in the back wall portion 11 of the case 1, and the inner wall surface 1 a of the case 1 (particularly the back wall in this embodiment). The conductor holding member 5 is attached to the inner wall surface of the portion 11.

As shown in FIG. 3, the conductor holding member 5 includes a back plate portion 51 mounted on the inner wall surface 1a of the case 1, a conductor mounting piece portion 52 continuous from the back plate portion 51, and the conductor. It is made of synthetic resin, and is mainly composed of a fitting piece portion 55 that is continuously provided from the mounting piece portion 52.

The back plate portion 51 has a plate shape having a width (that is, a length in the widthwise direction) narrower than that of the back wall portion 11 of the case 1 and a length in the longitudinal direction substantially the same as that of the back wall portion 11. One surface serves as an attachment surface 51a attached to the inner wall surface 1a of the back wall portion 11. Further, the surface of the back plate portion 51 opposite to the attachment surface 51a serves as a ground conductor attachment surface 51b, and the earth conductor 22 described later is attached thereto. Further, in the back plate portion 51, from the attachment surface 51a to the earth conductor attachment surface 51b so as to communicate with the through hole 14 of the back wall portion 11 when attached to the inner wall surface 1a of the back wall portion 11. A through hole 50 is formed.

As shown in FIG. 3, the ground conductor 22 is a conductive member which is separate from the conductor 21 which will be described later, and is a thin thin plate which is narrower than the back plate portion 51. The ground conductor 22 is formed on the ground conductor mounting surface 51b while being in contact with the ground conductor mounting surface 51b.
It is attached and held to the back plate portion 51 by 1c. At this time, the through hole 22a is formed so as to communicate with the through hole 14 of the case 1 and the through hole 50 of the back plate portion 51 described above. . The through holes that communicate with each other will be described later,
While the fastening member 6 is inserted and fastened to the case 1,
A conduction assisting member 23 that assists conduction between the case 1 and the ground conductor 22 is provided.

Further, the back plate portion 51 of the conductor holding member 5 includes
As shown in FIG. 3, the erroneous mounting prevention portion 4 is provided and the conductor mounting piece portion 52 is continuously provided. The erroneous mounting prevention portion 4 will be described later.

The conductor mounting piece 52, as shown in FIG.
The side wall portion 12 of the case 1 has a width in which both side edges (that is, edge edges in the longitudinal direction) of the back plate portion 51 are continuously provided substantially perpendicularly to the back plate portion 51.
It has a long plate shape that is approximately half the width of. On this conductor mounting piece portion 52, a conductor locking piece 53 and a back rib 54 project at an end edge on the side opposite to the back plate portion 51 and a portion located slightly on the back plate portion 51 side from this end edge. Set up.

As shown in FIG. 3, when the conductor holding member 5 is attached to the inside of the case 1, the conductor engaging piece 53 is provided so as to project substantially vertically from the conductor attaching piece portion 52 in the center direction of the case 1. The back rib 54 is provided so as to protrude in a direction opposite to the portion where the conductor locking piece 53 is provided, that is, in a direction substantially toward the side wall portion 12 of the case 1 so as to be substantially perpendicular to the conductor attachment piece portion 52. Here, the conductor locking piece 53 and the back rib 54 on the back plate portion 51 side are used as the conductor locking piece 53a and the back rib 54a, respectively, and at the end edge side of the conductor mounting piece portion 52 (that is, when attached to the case 1). The opening 10 side) is used as the conductor locking piece 53b and the back rib 54b.

The conductor locking pieces 53a, 53b are formed with projections toward the conductor locking pieces 53b, 53a facing the side surfaces, and the conductor 21 is moved from the tip of the locking pieces 53a, 53b to the base. The conductor 21 is fitted to the above to get over the convex portion, and the conductor 21 is locked and held. Also, the back rib 54
When the conductor holding member 5 is attached to the inside of the case 1, the tips of a and 54b abut against the inner wall surface of the side wall portion 12, so that the conductor 21 causes the blade 3 of the plug 3 described later.
It is supported by the back ribs 54 when it is pressed outward by 5. Then, the fitting piece 55 is continuously provided from the tip of the back rib 54b.

As shown in FIG. 3, the fitting piece portion 55 is formed from the tip of the back rib 54b on the opening 10 side to the conductor mounting piece portion 52.
Abutting surface portion 5 which is continuously provided substantially parallel to the opening portion 10 side
6 and a fitting arm portion 57 continuously provided from the end edge of the contact surface portion 56 on the opening 10 side toward the conductor locking piece 53 side substantially in parallel with the conductor locking piece 53 and the back rib 54. .

The abutting surface portion 56 abuts on the inner wall surface of the side wall portion 12 when the conductor holding member 5 is mounted inside the case 1, so that the conductor 21 can be moved outward as in the back rib 54 described above. It is possible to support the conductor holding member 5 when it is pressed against and firmly fix the conductor holding member 5.
Further, the fitting arm portion 57 is arranged along the front wall portion 13 when the conductor holding member 5 is mounted inside the case 1, and the tip portion 13a bent toward the inside of the case 1 of the front wall portion 13a.
The conductor holding member 5 can be firmly fixed to the case 1 by being fitted between the case 1 and the side wall portion 12. Further, the fitting arm 57 and the back rib 5 on the opening 10 side.
4b is an insertion groove 58 into which a locking portion 34 of the plug 3 and an engaging portion 73 of the power supply member 7 to be described later are inserted.

In addition to the conductor 21 and the ground conductor 22 described above being attached to the conductor holding member 5, a conduction auxiliary member 23 is disposed in the through hole 50 of the back plate portion 51. The inner diameter of the through hole 50 of the back plate portion 51 is formed to be larger than the inner diameters of the through hole 14 of the case 1 and the through hole 22a of the ground conductor 22. The conduction assisting member 23 has a through hole 2
2a, which has substantially the same shape and size (that is, approximately the same diameter) as that of 2a, and also has an annular portion 23a whose inner diameter is substantially the same as the inner diameters of the through hole 14 of the case 1 and the through hole 22a of the ground conductor 22. It is a thing. Then, the conduction assisting member 23 is fitted and disposed in the through hole 50 of the back plate portion 51. In this way, by providing the conduction assisting member 23 and increasing the contact area, it is possible to assist the conduction between the case 1 and the ground conductor 22 to obtain better conduction, and to secure the conductor holding member 5. Even if the case 1 is formed of a non-conductive synthetic resin, the case 1 and the ground conductor 22 can be more reliably connected to each other, so that the case 1 made of metal and the conductor holding member 5 made of synthetic resin as in the present embodiment. It is possible to separately form and to manufacture at low cost.

The attachment of the conductor holding member 5 to the case 1 will be described. The conductor holding member 5 includes the conductor 21.
The earth conductor 22 and the conduction assisting member 23 are attached and inserted into the case 1, the attachment surface 51a of the back plate portion 51 is brought into contact with the inner wall surface 1a of the back wall portion 11 of the case 1, and the fitting arm is also attached. The portion 57 is fitted between the tip portion 13a of the front wall portion 13 and the side wall portion 12, and the through hole 14 of the case 1 and the ground conductor 22 are fitted.
The through hole 22a of the back plate portion 51 and the through hole 50 of the back plate portion 51 (that is, the hole portion 23a of the conduction assisting member 23). Then, the through hole 14, the through hole 22a, and the hole portion 23a that communicate with each other.
The fastening member 6 is inserted into and to fasten the case 1 (see FIG. 4).

The fastening member 6 has through holes 14 and 22 which communicate with each other.
The shaft portion 61 is inserted into the hole a and the hole portion 23a, and the locking portions 62 formed at both ends of the shaft portion 61. Locking part 62
Is a circular flange having an outer diameter larger than the diameters of the through holes 14 and 22a, and is provided on the outer side of the inner wall portion 11 of the case 1 and the engaging portion 62a which is abutted and engaged with the ground conductor 22. Wall 1
and a locking portion 62b that is abutted and locked to b. In the present embodiment, as shown in FIG. 4, the fastening member 6 is preliminarily formed with only the engaging portion 62a that abuts and engages with the ground conductor 22, and the shaft portion 61 communicates with the through hole 14 that communicates. , Hole 2
3a, the hole depth in the communicating direction of the through hole 22a, that is, the case 1
Of the outer wall surface 1b of the inner wall portion 11 and the back plate portion 5 of the ground conductor 22
It is formed to be longer than the distance from the surface not attached to the case 1, and is inserted from the inside of the case 1 into the through hole 14, the hole 23a, and the through hole 22a that communicate with each other, and the locking portion 62a has the grounding conductor 22. And the engaging portion 62b is formed by caulking the portion of the shaft portion 61 that protrudes outward from the outer wall surface 1b of the case 1 in this state. The fastening member 6
Regarding the above, other than the one in which the locking portion 62 is caulked to form the locking portion 62 (including the rivet), a separate locking portion 62 may be attached to the shaft portion 61.

In this way, the grounding conductor 22, the conductor holding member 5, the conduction assisting member 23 and the case 1 are fastened by the fastening member 6, and the conductor holding member 5 is mounted inside the case 1. Further, in the present embodiment, the outer diameter of the engaging portion 62a of the engaging portion 62 of the fastening member 6 that is abutted and engaged with the ground conductor 22 is formed to be substantially the same as the outer diameter of the conduction assisting member 23. Therefore, when the fastening member 6 fastens the earth conductor 22, the conductor holding member 5, the conduction auxiliary member 23, and the case 1, the fastening force acts on the entire surface of the conduction auxiliary member 23. The conduction assisting member 23 can be securely fixed.

The wiring duct is constructed as described above, but in the present embodiment, a structure for ensuring more electrical safety is adopted. This is held by the conductor locking piece 53b rather than the line connecting the tip of the conductor locking piece 53b on the opening 10 side and the end edge of the opening 10 on the side facing the conductor locking piece 53b. Conductor 2
The conductor engaging piece 53b is formed so that the first member 1 is located closer to the side wall portion 12 on the conductor engaging piece 53b side. By doing so, even if a φ1 mm test needle is inserted into the case 1 through the opening 10 as shown in FIG. 6, the conductor locking piece 53b formed as described above causes the test needle to move to the conductor 2
1 is prevented, and the test needle is prevented from coming into contact with the conductor 21 and being energized to receive an electric shock as in the conventional example shown in FIG. It is possible to comply with the standard.

The plug 3 inserted and mounted in such a wiring duct will be described.

As shown in FIG. 10, the plug 3 has a plug body 31 and an insertion portion 32 protruding from the plug body 31.
And a slide body 38 slidably provided on the plug body 31 constitute a main body.

The plug body 31 has a substantially box shape, and in the present embodiment, one substantially half portion (for example, FIG. 10).
A slide body 38 described later is slidably provided in (a) and the right half portion in FIG. 10 (c). The plug body 31 has an insertion portion 32 protruding from one surface (hereinafter referred to as the front surface) and an outlet portion 33 formed on the surface opposite to the front surface (hereinafter referred to as the rear surface). In addition, in the present embodiment, the plug 3 is used as an electric device in which the outlet portion 33 is formed, but is not particularly limited to the one in which the outlet portion is formed.

The insertion portion 32 has a columnar shape having a diameter slightly smaller than the width of the opening 10 (that is, the distance between the opposed front end portions 13a of the front wall portions 13) so that the insertion portion 32 can be inserted into the case 1 through the opening portion 10. When the plug 3 is attached to the case 1, only the insertion portion 32 of the plug 3 is attached to the case 1.
It is located inside. The insertion portion 32 needs to be inserted into the case 1 through the opening 10 only in a predetermined orientation (hereinafter referred to as a correct orientation), and when the insertion portion 32 is inserted in the correct orientation, the tip portion of the insertion portion 32 is wired. The plug body 31 comes close to or comes into contact with the outer wall surface of the front wall portion 13 of the wiring duct while being close to the earth conductor 22 of the duct.

When the plug 3 is inserted and mounted in the case 1 in the correct direction, the insertion portion 32 has a wiring duct insertion groove 58 and a conductor in the depth direction (that is, from the opening 10 toward the back wall 11). 21 and the engaging portion 3 at the position where
4 and a blade 35 are provided respectively.

As shown in FIG. 10, the locking portions 34 are a pair of plate-like members which are provided so as to project from the insertion portion 32 in a direction substantially perpendicular to each other. As shown in FIG. The plug main body 3 has a substantially rectangular shape as viewed from the outside and is provided so as to project in the lateral direction. The width of the locking portion 34 (that is, the length in the left-right direction in FIGS. 10A and 10C) is formed narrower than the width of the opening portion 10. The length between the two end portions (that is, the length in the vertical direction in FIG. 10A) is wider than the width of the opening 10 and the insertion groove 58.
Is slightly narrower than the width (that is, the distance between the opposing contact surface portions 56 of the conductor holding member 5). As a result, the locking portion 34 can be inserted into the case 1 through the opening 10 with its longitudinal direction aligned with the longitudinal direction of the wiring duct, and the plug 3 is further rotated 90 ° to insert the locking portion 34 into the insertion groove. It can be prevented from coming off from the wiring duct by being inserted into 58 and abuttingly locked to the inner wall surface of the front wall portion 13 of the case 1.

The stopper blades 35 are a pair of thin metal plates that are provided so as to project from the insertion portion 32 in a direction substantially perpendicular to each other.
As shown in (a), similarly to the locking portion 34, the plug main body 31 having a substantially rectangular shape in a front view is provided so as to project in the lateral direction. The length between the tip ends of the pair of blades 35 (that is, the length in the vertical direction in FIG. 10A) is formed to be substantially the same as or slightly longer than the distance between the pair of conductors 21 of the wiring duct. In the state where the plug 3 is inserted and mounted in the case 1, the pair of blades 35 come into contact with the pair of conductors 21 of the wiring duct to electrically connect the blades 35 and the conductor 21. As a result, similarly to the locking portion 34, the blade 35 can be inserted into the case 1 through the opening 10, and the plug 3 can be rotated 90 ° to bring the blade 35 into contact with the conductor 21. .

A ground pin 36 is provided so as to project from the tip of the insertion portion 32, and the plug 3 is inserted into the case 1.
When mounted, the ground pin 36 contacts the ground conductor 22 of the wiring duct and is grounded. This ground pin 36
May be provided so as to be capable of projecting and retracting while being biased in a direction projecting with respect to the insertion portion 32. Further, in the insertion portion 32, as will be described later, an avoidance portion 42 for avoiding the protrusion 41 as the erroneous mounting prevention portion 4 provided in the wiring duct is recessed.

Next, the slide body 38 will be described.
The slide body 38 has a substantially semi-cylindrical shape with a substantially U-shaped cross section provided on a side surface of a substantially half portion of the plug body 31.
The shape of the slide body 38 is not particularly limited and may be any shape such as a substantially U-shaped cross section or a substantially L-shaped cross section. However, the outer surface does not face only one direction like a flat plate shape, and the above-described substantially L-shaped cross section is used.
It is preferable to have a plurality of orientations such as a letter-like orientation or two-direction orientation or a U-shaped cross section or a U-shaped orientation. This is the operation unit 39 that is operated by pressing or pinching the outer surface of the slide body 38 with a finger, and this operation unit 39 faces in a plurality of directions. The operability of the slide body 38 is improved because the operation section 39 faces in multiple directions.
In particular, since they are formed so as to face in mutually opposite directions like a substantially U-shaped cross section, it is possible to rotate the plug 3 while sliding the slide body 38 by grasping the operating portion 39 with a finger.

The slide body 38 has a positioning portion 37.
Is formed. The positioning portion 37 is provided so as to project upward from the operation portion 39 of the slide body 38.
An inclined surface 37a serving as a guide portion is formed. The slide body 38 is provided on the plug body 31 so as to be slidable in the back direction from a state in which the slide body 38 is urged in a direction from the back surface to the front surface of the plug body 31 (hereinafter referred to as a reference state). Is formed so as to project from the front surface of the plug body 31, and the positioning portion 37 does not project from the front surface of the plug body 31 when the slide body 38 slides. As a result, the positioning portion 37 can be projected and retracted with respect to the plug body 31.

The provision of the slide body 38 slidably on the plug body 31 will be described. 7 and 8 show the casing portion 31a and the equipment portion 31b, respectively, which form the plug body 31, and FIG. 9 shows a perspective view of the slide body 38.

As shown in FIG. 9, on the inner wall surface of the slide body 38, a pair of guide portions 38c between which a spring is located are projected, and in this case, the guide portions 38c are positioned above the guide portions 38c. The part 37 is integrally formed. Guide part 38
In c, a protruding portion 38d is provided on the protruding surface and a concave line 38e is formed on the side surface.

As shown in FIG. 7, the casing 31a of the plug body 31 is formed with a projection T which is fitted into the recess 38e, and a spring recess H into which the end of the spring is fitted. Is formed.

The equipment portion 31b is formed with an insertion portion 32 and the like. The equipment portion 31b is replaced with the casing portion 31a.
With attached to the portion shown in FIG. 7 in A ₁ of the lower end portion of the spring fitted into the recess H for the spring, a pair of guide portions 38c
The spring is inserted between the slide body 38 and the protrusion T of the casing portion 31a so as to be fitted in the recess 38e.
Is disposed in a portion indicated by A ₂ in FIG. 7 of the casing portion 31a. By doing so, as described above, the slide body 38 can be arranged in a state of being biased by the spring in the direction from the back surface to the front surface of the plug body 31 (that is, the reference state). At this time, the convex portion 38d of the slide body 38 comes into contact with the end S of the upper wall of the device portion 31b, and the movement by the spring bias is restricted. Also, by pushing the positioning portion 37 or operating the operating portion 39 by grasping it with a finger from the reference state, the slide body 38 can be slid so that the positioning portion 37 does not project from the front surface of the plug body 31. it can.

Insertion and mounting of the plug 3 into the wiring duct will be described. The plug 3 inserts the insertion portion 32 into the case 1 with the locking portion 34 aligned with the longitudinal direction as described above and with a predetermined correct orientation with respect to the wiring duct.
Then, with the tip of the insertion portion 32 abutting (or approaching) the ground conductor 22 and the locking portion 34 positioned at the same depth depth as the insertion groove 58 of the wiring duct (FIG. 1A).
1), the plug 3 is rotated 90 ° (see FIGS. 1B and 1C), the locking portion 34 is inserted into the insertion groove 58, and the inner wall surface of the front wall portion 13 of the case 1 is abutted. Make contact and lock. Then, during this time, the positioning portion 37 is in a state of being located outside the wiring duct as shown in FIG. 1A and being in a state of being locked to the edge of the opening 10 of the wiring duct as shown in FIG. 1C. However, this is because the positioning portion 37 is provided with the inclined surface 37a as a guiding portion, and therefore the edge of the front wall portion 13 of the case 1 opposite to the opening portion 10 is rotated as the plug 3 is rotated. Pushes the inclined surface 37a and the positioning portion 37 and the slide body 38 slide, and the positioning portion 37 does not project from the front surface of the plug body 31 and slides on the outer wall surface of the front wall portion 13 to fit into the opening portion 10. Included, slide body 38
The positioning portion 37 returns to the reference state by the biasing force of the spring and is locked in the opening 10.

To remove the plug 3 from the wiring duct, the operating portion 39 is picked up with a finger and the slide body 38 is slid so that the positioning portion 37 does not protrude from the front of the plug body 31 and the plug 3 is inserted and mounted. The insertion portion 32 is pulled out from the wiring duct by rotating 90 ° in the opposite direction to the time.

In such a wiring duct system, the plug 3 has polarity, and one blade 35 is in contact with the conductor 21 on the predetermined side of the pair of conductors 21 and the other blade is 35 needs to contact the remaining conductor 21. However, in such a plug 3, when the insertion portion 32 is inserted into the wiring duct, the locking portion 34
When the longitudinal direction of the is aligned with the longitudinal direction of the opening 10 is in a predetermined correct direction (see FIG. 1A).
In some cases (see FIG. 5), the combination is a combination of the plug blade 35 and the conductor 21 that come into contact with each other when the plug 3 is inserted and mounted in the wrong orientation. It is different from the combination that should come into contact. Therefore, in this embodiment, the erroneous mounting prevention unit 4 is provided.

The erroneous mounting prevention unit 4 is the case 1 of the wiring duct.
It is provided on the back plate portion 51 of the conductor holding member 5 disposed inside. In the present embodiment, as shown in FIG. 2, the projection 41 is projected from the back plate portion 51 toward the center side of the case 1, and is elongated in the longitudinal direction of the case 1 as shown in FIG. 2C. It has a plate shape. As a result, even if the insertion portion 32 of the plug 3 is inserted into the case 1 through the opening 10 in the wrong orientation, as shown in FIG. Since it is inserted and cannot contact (or approach) the ground conductor 22, the locking portion 34
Cannot be located at the same depth as the insertion groove 58 of the wiring duct, so that the combination of the blade 35 and the conductor 21 will not be a wrong combination and the electrical stability of the contacts will not be reduced.

The plug 3 is provided with an avoiding portion 42 for avoiding the protrusion 41. When the plug 3 is inserted in the correct direction, the protrusion 41 is avoided as shown in FIG. 1 (a). The insertion portion 32 comes into a state of being positioned at the portion 42, the tip end portion of the insertion portion 32 abuts (or approaches) the ground conductor 22, and the locking portion 3
4 can be located at the same depth and depth as the insertion groove 58 of the wiring duct, and the plug 3 can be mounted in the wiring duct. The plug 3 is not only inserted in the case 1 in the correct direction, but also rotated 90 ° in a predetermined direction to bring the predetermined blade 35 and the conductor 21 into contact with each other. The avoiding portion 42 for avoiding the protruding projection 41 is
As shown in (a), the upper end is recessed so as to face two side surfaces of the insertion portion 32. Since the plug 3 rotates around the ground pin 36 in FIG. 10A, an R centered on the ground pin 36 is formed between the two side surfaces of the avoidance portion 42 (that is, the central portion).

According to the above structure, the conductor holding member 5 for holding the conductor 21 is formed separately from the case 1, so that the metal case 1 and the synthetic resin conductor holding member 5 are separated from each other. And can be manufactured at low cost,
Further, the conductor holding member 5 is made of synthetic resin by attaching the ground conductor 22 to the conductor holding member 5 and providing the conductor holding member 5 with the conduction auxiliary member 23 for assisting the conduction between the case 1 and the ground conductor 22. In spite of this, the case 1 and the ground conductor 22 are surely electrically connected to each other, and the plug 3 is surely grounded. Further, the case 1, the conductor holding member 5, and the ground conductor 22 are communicated with each other. Through hole 14,
50, 22a are formed, the shaft portion 61 of the fastening member 6 is inserted into the through holes 14, 50, 22a that communicate with each other, and the ground conductor 22 and the outer wall surface 1b of the case 1 are engaged with the engaging portions 62a, 62b at both ends. By locking the
The conductor holding member 5, the conduction assisting member 23, and the case 1 can be easily fastened by the fastening member 6.

The inner diameter of the through hole 50 of the conductor holding member 5 is made larger than the inner diameters of the through hole 22a of the ground conductor 22 and the through hole 14 of the case 1, and the outer diameter of the conduction assisting member 23 is held by the conductor. The through hole 50 of the member 5 is formed to have substantially the same diameter as the inner diameter of the through hole 50, and the conduction assisting member 23 is formed with a hole portion 23a having an inner diameter of substantially the same as the through hole 22a of the ground conductor 22 and the through hole 14 of the case 1. Since the conduction auxiliary member 23 is fitted in the through hole 50 of the conductor holding member 5, the conduction auxiliary member 23 can be easily arranged. Further, since the outer diameter of the conduction assisting member 23 is formed to be substantially the same as the outer diameter of the locking portion 62a that is locked to the ground conductor 22 of the fastening member 6,
The fastening force acts on the entire surface of the conduction auxiliary member 23, and the conduction auxiliary member 23 can be securely fixed.

In such a wiring duct system, a power feeding member 7 for energizing the conductor 21 is usually attached to the end of the case 1, which will be described below with reference to FIGS. 11 to 18.

As shown in FIG. 11, the power supply member 7 is attached near the end of the wiring duct, and as shown in FIG. 12, the main body portion 71 and the cover portion 77 are main components. Note that EC in FIG. 11 is an end cap attached to the end portion of the case 1 (however, the end portion to which the power feeding member is not attached), and FIG. 18 shows its shape.

The main body portion 71 is as shown in FIG. 13, and a substantially half portion is inserted into the case 1 (see FIG. 11). The main body portion 71 is provided with an electrode portion 72, an engaging portion 73, a terminal portion 74, a holding portion 75, and a power cord holding portion 8 described later. A pair of electrode portions 72 are provided so as to contact the pair of conductors 21 of the wiring duct when the body portion 71 is attached to the case 1. The engaging portion 73 is insert-engaged with the insertion groove 58 of the wiring duct when the main body 71 is attached to the case 1, and thus the main body 71 is prevented from falling out of the case 1. A pair of terminal portions 74 are provided in a portion that is not inserted into the case 1, and a lead wire of a power cord from the outside for supplying power to the wiring duct is connected thereto. Presser part 7
5 is a fixing member 7 on the main body 71 inserted into the case 1.
6, the fastener 76 is tightened to press the outer wall surface of the front wall portion 13 of the case 1 into contact with each other.
5, the wiring duct is sandwiched between the engaging portion 5 and the engaging portion 73 to fix the main body portion 71. Further, the main body portion 71 is provided with the power cord holding portion 8.

As shown in FIG. 13, the power cord holding portion 8 is composed of a movable body M and a fixed body F connected to the movable body M so that the movable body M can move forward and backward. The movable body M is connected to the fixed body F at K.

The movable body M and the fixed body F are in contact with each other at their opposing surfaces. In the figure, reference numeral 82 is a contact surface of the movable body M with respect to the fixed body F, and 92 is the fixed body F with respect to the movable body M. The contact surface is shown. The contact surfaces 82 and 92 of the movable body M and the fixed body F are
Holding recesses 81 and 91 for holding the power cord are formed. The holding recesses 81, 91 are formed in a substantially arc shape in a side view, and when the movable body M is connected to the fixed body F by the fastener K, the power cord is held by the holding recesses 81, 91. It is something. By doing so, since the movable body M and the fixed body F are connected so as to be able to move forward and backward, the work can be easily performed by separating the movable body M from the fixed body F when sandwiching or removing the power cord. In addition, the movable body M and the fixed body F are fixed to each other by the contact surfaces 82 and 92 with the fixing tool K, and the power cord is sandwiched between the concave portions 8.
Since it is sandwiched by 1, 91, the power cord can be fixed to the power feeding member 7 with a stable holding force.

Next, another example of the power cord holding portion 8 will be described with reference to FIGS. 14 to 16. This is different from the above example shown in FIG. 13 in that a plurality of holding concave portions 81 are formed in the movable body M,
This will be described below.

In the movable body M of this example, one of the abutting surfaces 82, which is a substantially half portion, serves as a reference surface portion 82a, and the other substantially half portion has a step surface portion 8 protruding from the reference surface portion 82a.
2b, and the contact surface 92 of the fixed body F is formed by a base surface portion 92a corresponding to the step surface portion 82b and the reference surface portion 82a of the movable body M, and a projecting surface portion 92b protruding from the base surface portion 92a. There is. The reference surface portion 82a and the stepped surface portion 82b of the movable body M are provided with sandwiching recesses 81a and 81b having different sizes (that is, recess depths).

In this structure, as shown in FIG. 15, the movable body M is arranged so that the step surface portion 82b and the reference surface portion 82a of the movable body M contact the base surface portion 92a and the projecting surface portion 92b of the fixed body F, respectively. M can be connected to the fixed body F by a fastener K, or, as shown in FIG. 16, the reference surface portion 82a of the movable body M can be connected so as to abut on the projecting surface portion 92b of the fixed body F. Can be selectively abutted against.

By doing so, the power cord is sandwiched between the sandwiching recess 81a of the movable body M and the sandwiching recess 91 of the fixed body F, or the sandwiching recess 81b having a recess depth different from that of the sandwiching recess 81a. The power supply cord C can be held by the holding recess 91, and the power supply cords C having different diameters can be held with a simple structure.

Next, still another example of the power cord holding portion 8 will be described with reference to FIG. In this thing,
This is different from the above-described example shown in FIGS. 14 to 16 in that different sandwiching concave portions 81c and 81d are formed on a pair of abutting surfaces 82c and 82d of the movable body M facing opposite sides.

In the movable body M of this example, a first contact surface 82c is formed on one surface, and a second contact surface 82d is formed on the surface opposite to the contact surface 82. Abutting surface 82 of
c and 82d can be selectively brought into contact with the contact surface 92 of the fixed body F. The first contact surface 82c and the second contact surface 82
Clamping recesses 81c and 81d having different recess depths from the contact surface 82 are formed at d.

In this structure, as shown in FIG. 17B, the movable body M is fixed so that the second contact surface 82d of the movable body M contacts the base surface portion 92a of the fixed body F. It connects with F by the fixing tool K, or as shown in FIG.17 (c), it connects so that the 1st contact surface 82c of the movable body M may contact with the base surface part 92a of the fixed body F. It is a thing.

By doing so, the power cord is sandwiched between the sandwiching recess 81c of the movable body M and the sandwiching recess 91 of the fixed body F, or the sandwiching recess 81d having a recess depth different from that of the sandwiching recess 81c. The power cord C can be pinched with the pinching recess 91, and the power cord C having a different diameter can be pinched with a simple configuration.

[0062]

As described above, in the invention according to claim 1 of the present invention, a wiring duct in which an opening is formed in a longitudinal direction in a long hollow case and a long conductor is held inside the case. In which the case is made of metal, a conductor holding member made of synthetic resin is attached to the wall surface inside the case, and the conductor is held by the conductor holding member, and the back plate portion of the conductor holding member is attached to the wall surface inside the case. A grounded conductor, which is a plate-like member and is separate from the conductor, is mounted on the surface opposite to the mounting surface to the wall surface, and is attached to the portion to which the back plate portion and the back plate portion of the case are mounted and the ground conductor, respectively. From a shaft portion that forms a communicating through hole and is inserted into the communicating through hole, and locking portions that are formed at both ends of the shaft portion and that are respectively locked to the wall surface outside the case and the ground conductor. Fasten the conductor holding member to the case with Since the conduction auxiliary member for assisting the conduction between the case and the ground conductor is provided in the through hole of the conductor holding member, the metal case and the synthetic resin conductor holding member can be separately formed and can be manufactured at low cost. It is possible to ensure that the case and the ground conductor can be electrically connected even though the conductor holding member is made of synthetic resin.
Furthermore, the fastening member can easily fasten the earth conductor, the conductor holding member, the conduction assisting member, and the case.

Further, in addition to the effect of the invention described in claim 1, in the invention described in claim 2, the inner diameter of the through hole of the conductor holding member is determined from the inner diameters of the through hole of the ground conductor and the through hole of the case. Is also formed to have a large diameter, and the outer diameter of the conduction assisting member is formed to be substantially the same as the inner diameter of the through hole of the conductor holding member,
Since the conduction assisting member has a hole portion having an inner diameter substantially the same as the inner diameters of the through hole of the ground conductor and the through hole of the case, and the conduction assisting member is fitted in the through hole of the conductor holding member, the conduction assisting member can be easily carried out. Can be provided.

According to the invention of claim 3, in addition to the effect of the invention of claim 2, the outer diameter of the conduction assisting member is provided outside the engaging portion which is engaged with the ground conductor of the fastening member. Since the diameter is substantially the same as the diameter, the fastening force acts on the entire surface of the conduction assisting member, and the conduction assisting member can be reliably fixed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (a) is a view seen from the longitudinal direction of a wiring duct showing a state in which the plug is inserted into the wiring duct and is not locked, and (b) is a plug. FIG. 6 is a view seen from the longitudinal direction of the wiring duct showing a state in which is inserted and locked in the wiring duct, and (c) is a view seen from the opposite side in the state of (b).

2A and 2B show wiring ducts in the same as above, FIG. 2A is a view seen from the back wall side of the case, FIG. 2B is a view seen from the side wall side of the case, and FIG. It is the figure seen from the opening side, and (d) is the figure seen from the longitudinal direction.

FIG. 3 is an enlarged sectional view of the wiring duct in the above.

FIG. 4 is an exploded perspective view of the wiring duct in the above.

FIG. 5 is a diagram showing a state in which the plug is inserted into the wiring duct in the wrong direction in the same as above.

FIG. 6 is a view showing a state in which the test needle is inserted into the conductor from the opening of the wiring duct in the same as above.

FIG. 7 shows the casing part of the plug in the above,
(A) is a front view and (b) is a sectional view.

FIG. 8 shows a device part of the plug in the same as above, (a) is a front view, (b) is a left side view, and (c) is a lower side view.

FIG. 9 is a perspective view of a slide body of the plug in the above.

FIG. 10 shows the plug in the same as above, (a) is a front view, (b) is a left side view, (c) is a lower side view, (d) is a right side view, (e) is an upper side view, (f) is a rear view.

FIG. 11 is an overall view of the above wiring duct with a part thereof omitted.

FIG. 12 shows the power feeding member in the above, (a) is an upper side view, (b) is a view seen from the side where the conductor holding member is not provided, (c) is a front view, FIG. 3D is a view seen from the side where the conductor holding member is provided, and FIG.

FIG. 13 shows the main body of the power feeding member in the above,
(A) is an upper side view, (b) is a view seen from the side where the conductor holding member is not provided, (c) is a front view,
(D) is a view seen from the side where the conductor holding member is provided,
(E) is a lower side view.

14A and 14B show another example of the power feeding member, FIG. 14A is an upper side view, FIG. 14B is a view seen from a side where the conductor holding member is not provided, and FIG. 14C is a front view. (D) is the figure seen from the side which provided the conductor holding member, (e) is a lower side view.

FIG. 15 shows a state in which the stepped surface portion and the reference surface portion of the movable body are connected so as to contact the base surface portion and the projecting surface portion of the fixed body, respectively, in the same as above, (a) is a side view, and (b) is (b). It is the figure seen from the longitudinal direction.

FIG. 16 shows a state in which the reference surface portion of the movable body is connected so as to abut the projecting surface portion of the fixed body in the same as above, (a) is a side view, and (b) is a view seen from the longitudinal direction.

FIG. 17 shows still another example of the above power feeding member, (a) is a side view, and (b) is connected so that the second contact surface of the movable body contacts the base surface portion of the fixed body. FIG. 6 is a view of the state as viewed from the longitudinal direction, and FIG. 6C is a view of the state in which the first contact surface of the movable body is connected so as to contact the base surface portion of the fixed body as viewed from the longitudinal direction.

FIG. 18 shows an end cap, (a) is an upper side view, (b) is a left side view, (c) is a front view, (d) is a right side view, (e) ) Is a rear view,
(F) is a bottom side view.

FIG. 19 is a perspective view showing an example in which a wiring duct is used for an information rack.

FIG. 20 is a perspective view showing an example in which a wiring duct is hung by a hanging tool.

21A and 21B show a state in which a plug is inserted into a conventional wiring duct, FIG. 21A is a view seen from the longitudinal direction of the wiring duct, and FIG. 21B is a plan view.

22A and 22B show a state in which the plug inserted in the wiring duct is rotationally locked in the same as above, FIG. 22A is a view seen from the longitudinal direction of the wiring duct, and FIG. 22B is a plan view.

FIG. 23 is a diagram showing a state in which the plug is inserted into the wiring duct in the wrong direction in the above.

FIG. 24 is a view showing a state in which the test needle is inserted toward the conductor from the opening of the wiring duct in the above.

[Explanation of symbols]

1 case 1a inner wall surface 10 openings 14 through holes 21 conductor 22 Earth conductor 22a through hole 23 Conduction auxiliary member 50 through holes 5 Conductor holding member 51 Back plate 51a Attachment surface 51b Ground conductor mounting surface 6 fastening members 61 Shaft 62a locking part 62b locking part

Claims (3)

[Claims] 1. In a wiring duct in which an opening is formed in a longitudinal direction in a long hollow case to hold a long conductor inside the case, the case is made of metal, and a wall surface inside the case is made of synthetic resin. The conductor holding member is attached and the conductor is held by the conductor holding member, and the conductor holding member attached to the wall surface inside the case is different from the conductor on the surface opposite to the mounting surface of the back plate of the conductor holding member to the wall surface. An earth conductor having a substantially plate shape is attached to the back plate portion, a portion of the case to which the back plate portion is attached, and a through hole communicating with the ground conductor are formed, and a shaft inserted into the communicating through hole. The conductor holding member is fastened to the case with fastening members each of which is formed on both ends of the shaft portion and the wall surface outside the case and the grounding conductor. Conduction between case and ground conductor in through hole A wiring duct characterized in that a conduction auxiliary member for assisting the wiring is provided. 2. The inner diameter of the through hole of the conductor holding member is formed to be larger than the inner diameters of the through hole of the ground conductor and the through hole of the case, and the outer diameter of the conduction assisting member is the inner diameter of the through hole of the conductor holding member. And a hole portion having an inner diameter substantially the same as the inner diameters of the through hole of the ground conductor and the through hole of the case, and the conduction assisting member is fitted in the through hole of the conductor holding member. The wiring duct according to claim 1, wherein the wiring ducts are combined. 3. The wiring duct according to claim 2, wherein the outer diameter of the conduction assisting member is formed to be substantially the same as the outer diameter of the engaging portion that is engaged with the ground conductor of the fastening member.