JP3050257B2 - Wiring duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring duct provided on a roller conveyor or the like and accommodating a power line or a signal line.

[0002]

2. Description of the Related Art As a conventional roller conveyor, there is a roller conveyor in which a roller is driven to rotate by a motor, and an optical sensor for detecting a conveyed load is provided at a predetermined position of the roller conveyor. The motor is supplied with power from a power supply via a power line, and a signal detected by the optical sensor is transmitted to a control panel via a signal line. A wiring duct is provided on a frame supporting the roller conveyor to protect these power lines and signal lines.

FIG. 7 shows an example of a wiring duct 11 of such a conventional roller conveyor. In this figure, a wiring duct 11 is fixed by bolts 14 to an upper portion of a horizontal frame 13 that connects legs 12 of a support frame of a roller conveyor. A signal line and a power line 16 are accommodated in the wiring duct 11, and these wirings 16 are put in and out of an entrance formed by attaching a protective cap 15 to a hole formed in a side wall of the wiring duct 11. The work of laying the wiring 16 is performed with the cover 11a of the wiring duct 11 removed.
Will be installed after the installation work is completed.

[0004]

However, in such a conventional structure, in order to form the entrance and exit of the wiring 16,
It is necessary to drill a hole at a predetermined position on the side wall of the wiring duct 11 and attach a protective cap 15 to this hole. This is extremely complicated and, for example, when the position of the optical sensor is changed, a new one is required each time. There is a problem that a hole needs to be re-drilled at an appropriate position. In addition, when the wiring duct 11 is attached to the horizontal frame 13, there is a problem that a bolt hole needs to be provided according to the position of the horizontal frame 13. An object of the present invention is not only to ensure the protection of the wiring, but also to greatly simplify the wiring work and the work of attaching the wiring duct to a frame or the like.

[0005]

In the wiring duct according to the present invention, a housing chamber for housing wires, a slit communicating with the housing chamber, and a mounting groove for fixing a mounting bracket extend in the longitudinal direction. Body and slit wiring output
By fitting them only at the entrance
A pair of fitting members for defining the wiring entrance and exit.
It is characterized by having.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a view showing the appearance of a roller conveyor provided with a wiring duct 31 according to a first embodiment of the present invention.

The roller conveyor itself has a conventionally known configuration. In other words, a large number of rollers 22 are rotatably supported on a main frame 21 extending in the direction in which the load is conveyed.
3 is provided above.

The roller 22 is driven to rotate by a motor 24 and a chain (not shown). The motor 24 is supplied with power from a power source (not shown) via a power line 25. Optical sensors 26 and 27 for detecting the presence or absence of a load are provided at predetermined positions of the roller conveyor. One optical sensor 26 has a structure in which a light beam emitted from a light emitting element is directly detected by a light receiving element.
Reference numeral 7 denotes a structure in which a light beam emitted from a light emitting element is reflected by a mirror 28 and detected by a light receiving element. The signals detected by these optical sensors 26 and 27 are transmitted to a control panel (not shown) via a signal line 29. The power line 25 and the signal line 29 are accommodated in a wiring duct 31 provided below the roller 22, and between a roller conveyor and a power supply or a control panel, in a wiring duct 32 extending laterally from the roller conveyor. Will be accommodated.

FIG. 2 shows a state in which the wiring duct 31 is attached to a roller conveyor. As shown in this figure, the horizontal frame 33 is bridged between the pair of legs 23 and extends horizontally from the main frame 21 in a direction perpendicular to the main frame 21. The wiring duct 31 is fixed to the lower surface of the horizontal frame 33 via a mounting bracket 34. The wiring duct 31 is made of, for example, an aluminum alloy and is obtained by extrusion, but may be another type of material.

As shown in FIG. 3, the main body 40 of the wiring duct 31 has first and second storage chambers 41, 42 and slits 43, 44. , 44 to the outside of the wiring duct 31. The slits 43, 44 are formed in step portions 45, 46 provided at substantially the height of the center of the main body 40.
The storage chambers 41 and 42 and the slits 43 and 44 extend in the longitudinal direction of the main body 40.

The first housing chamber 41 and the second housing chamber 42 are completely partitioned by a partition 47, and the first housing chamber 41 has a signal connected to the optical sensors 26 and 27. The wire 29 is accommodated, and the motor 24 is accommodated in the second accommodation chamber 42.
Is accommodated. The signal line 29 and the power line 25 enter and exit the wiring duct 31 through slits 43 and 44, respectively.

The slits 43 and 44 are fitted with fitting members 4.
8 are fitted, and a pair of fitting members 48 define wiring doorways 49 in the slits 43 and 44, respectively. The fitting member 48 is formed of, for example, a synthetic resin, and includes a head 48a located in the accommodation chambers 41 and 42,
A neck portion 48b fitted to the slits 43 and 44;
5, and a flat plate portion 48c that engages with the lower surface of each of the first and second plates 46.

The storage chambers 41, 42 and the slits 43, 44
4 extends in the longitudinal direction of the main body 40 and opens at both ends of the main body 40, as shown in FIG. Fitting member 48
Is inserted into the slits 43 and 44 by bending the head portion 48a from the lower surface side of the step portions 45 and 46, or the head portion 48a
Are inserted into the accommodation chambers 41 and 42 so that the flat plate portion 48 c is located outside the main body 40 and the slit 4 is formed from the end of the main body 40.
3, 44. The fitting members 48 are provided on both sides of the signal line 29 and the power line 25 in the slits 43 and 44, whereby the signal line 29 and the power line 2
5 is fixed at a predetermined position. Note that end covers 51 and 52 are fitted to both ends of the main body 40.

Referring again to FIG. 3, the upper wall 5 of the main body 40
Mounting grooves 54 and 55 for fixing the mounting bracket 34 are provided on the upper surface of 3. These mounting grooves 54 and 55 are also provided in the accommodation chambers 41 and 42 and the slit 43,
Like 44, it extends in the longitudinal direction of the main body 40 as shown in FIG. On the other hand, as shown in FIG. 5, the mounting bracket 34 has a flange portion 34 a placed on the upper surface of the wiring duct 31 and an engaging portion 34 b hooked on the horizontal frame 33. The flange portion 34 a is fixed to the mounting grooves 54, 55, that is, the wiring duct 31 by bolts 56 and nuts 57. The nut 57 is provided in the mounting grooves 54 and 55 and has a rectangular shape so as not to rotate freely in these grooves 54 and 55.

That is, the horizontal frame 3 of the wiring duct 31
At the time of mounting work on the mounting bracket 3, first, the engaging portion 34 b of the mounting bracket 34 is engaged with the horizontal frame 33 with the bolt 56 lightly tightened with respect to the nut 57. After the relative position between the wiring duct 31 and the mounting bracket 34 is determined, the bolt 56 is tightened to the nut 57.

The signal wire 29 is mounted in the wiring duct 31 by inserting the signal wire 29 through the slit 43 and housing it in the first housing chamber 41, and fitting the fitting member 48 into the slit 43. The entrance 49 of the line 29 may be determined. Thus, the signal line 29 does not move freely along the slit 43 and is fixed at a predetermined position. The power line 25 is also stored in the second storage chamber 42 in the same manner.

As described above, in this embodiment, the first and second storage chambers 41 and 42 extending over the entire length of the main body 40, the slits 43 and 44, and the mounting grooves 54 and 55 are provided. Therefore, in order to fix the signal line 29 and the power line 25 at predetermined positions of the wiring duct 31, a complicated operation such as making a hole with a drill or the like is unnecessary. Therefore,
For example, even when the mounting positions of the optical sensors 26 and 27 are changed, it is sufficient to simply remove the fitting member 48 and replace it with a new location, and the operation is simple. In addition, the work of attaching the wiring duct 31 to the horizontal frame 13 is also performed.
It is only necessary to fix the mounting bracket 34 to the wiring duct 31 with the bolt 56 and the nut 57, and it is not necessary to provide a bolt hole according to the position of the horizontal frame 13 as in the related art.

Further, in this embodiment, the first accommodating chamber 41 and the second accommodating chamber 42 are shut off by the partition wall 47, and the signal line 29 is accommodated in the first accommodating chamber 41 and the power line 2 is accommodated.
5 is accommodated in the second accommodation chamber 42. Therefore, due to the influence of the power line 25, the signal line 2
9 does not generate noise in the signal transmitted, and erroneous detection of the load by the optical sensors 26 and 27 is prevented.

Further, according to the present embodiment, the signal line 29 and the power line 25 are completely accommodated in the first and second accommodation chambers 41 and 42, and are fixed to the slits 43 and 44 by the fitting member 48. Therefore, it is securely protected, and there is no possibility that other devices or the like may interfere with each other and break the wire.

The wiring duct 31 is connected to the horizontal frame 33.
When mounting on the upper surface of the
The mounting grooves 61 and 62 may be provided on the lower surface of the main body 40.

FIG. 6 shows a second embodiment. The wiring duct 31 of this embodiment is also made of an aluminum alloy and is obtained by extrusion, but has a different shape from that of the first embodiment. That is, the slit 4 for inserting the signal line 29 and the power line 25 into the first and second accommodation chambers 41 and 42.
3 and 44 are formed on the side walls 63 and 64 of the main body 40. Other configurations are the same as those of the first embodiment, and similar effects can be obtained.

Also in this embodiment, when the wiring duct 31 is mounted on the upper surface of the horizontal frame 33, mounting grooves 65 and 66 may be provided on the lower surface of the main body 40 as shown by broken lines.

In each of the above embodiments, the wiring duct 31
Although the signal line 29 and the power line 25 are provided in the inside, only one of these may be accommodated in the wiring duct 31. Further, the present invention is not limited to wiring of signal lines and power lines, but is also applicable to wiring ducts for providing other wiring. Further, the present invention is also applicable to a wiring duct provided in equipment other than the roller conveyor.

[0024]

As described above, according to the present invention, not only the wiring can be reliably protected, but also the wiring work and the work of attaching the wiring duct to the frame or the like can be greatly simplified.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a roller conveyor provided with a wiring duct according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a state in which a wiring duct is attached to a roller conveyor.

FIG. 3 is a sectional view showing a wiring duct.

FIG. 4 is a perspective view showing a wiring duct.

FIG. 5 is a sectional view showing a state where a mounting bracket is mounted on the wiring duct.

FIG. 6 is a sectional view showing a second embodiment of the present invention.

FIG. 7 is a diagram showing a state where a conventional wiring duct is attached to a roller conveyor.

[Explanation of symbols]

 Reference Signs List 25 power line 29 signal line 31 wiring duct 34 mounting bracket 40 main body 41, 42 storage chamber 43, 44 slit 47 partition wall 48 fitting member 49 wiring entrance 54, 55 mounting groove

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 53-135597 (JP, U) Japanese Utility Model Sho 54-77998 (JP, U) Japanese Utility Model Sho 53-156095 (JP, U) Japanese Utility Model Hei 2 146917 (JP, U) Japanese Utility Model 4-111221 (JP, U) Japanese Utility Model 6-5323 (JP, U) Japanese Utility Model Application 58-72923 (JP, U) Japanese Utility Model 6-44319 (JP, U) Japanese Utility Model Sho 55-38176 (JP, Y2) Japanese Utility Model Sho 56-9307 (JP, Y2) Japanese Utility Model Sho 51-4817 (JP, Y2) Japanese Utility Model 56-22420 (JP, Y2) Japanese Utility Model 56-9306 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 3/00-3/04

Claims (1)

(57) [Claims] And 1. A storage chamber which wire is accommodated, and a slit communicating with the receiving chamber, a body and a fixed attachment groove mounting bracket extending in the longitudinal direction, the ground
Fits only at the part that will be the entrance and exit for wiring
By forming a pair of doors for wiring
A wiring duct comprising a fitting member .