JP2008135877A - Wiring structure of image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the wiring structure of an image forming apparatus such that the outward appearance of wiring arranged outside the image forming apparatus is made excellent, and the wiring is arranged to be hardly caught. <P>SOLUTION: Disclosed is the wiring structure of the image forming apparatus having the wiring connecting the main body part 2 of the image forming apparatus and an ADF mechanism part installed outside the main body part 2 to each other, where control wiring 21 and ground wiring 22 extended from the ADf mechanism part and arranged outside the image forming apparatus are covered with a coating tube 23, the control wiring 21 and ground wiring 22 covered with the coating tube 23 are led in the main body part 2 from an insertion part 28 provided to the sheet metal cover 20 of the main body part 2, and the ground wiring 22 exiting from the opening end 23a of the coating tube 23 in the main body part 2 is led to the outside of the main body part 2 again through the insertion part 28 and then connected to the external surface of the sheet metal cover 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wiring structure of an image forming apparatus provided with wiring for connecting a main body portion of the image forming apparatus and a mechanism portion installed outside the main body portion.

In an image forming apparatus such as a facsimile or a copying machine, as shown in Patent Document 1, an automatic document transport mechanism (hereinafter referred to as “ADF mechanism”) that transports a document sheet to an image reading unit is installed. The ADF mechanism section is installed on a document presser cover that is freely opened and closed on a platen glass on the upper surface of the main body section, and is configured as a mechanism section separate from the main body section. Therefore, a control wiring for supplying a control signal and power from the main body to the ADF mechanism is provided. The control wiring exits from the ADF mechanism and is connected to a control device, a power supply device, and the like inside the main body. In addition, a ground wiring is provided for discharging static electricity generated in the ADF mechanism section to a grounding component provided on the main body section side, and this ground wiring is also grounded from the ADF mechanism section such as a sheet metal member of the main body section. Connected to other parts.
JP 2004-343491 A

  By the way, the control wiring and the ground wiring coming out from the ADF mechanism section are arranged through the outside such as the back side of the image forming apparatus. However, the conventional control wiring and ground wiring are used for image formation. Each was independently arranged outside the device. As described above, when the plurality of wirings exposed to the outside of the image forming apparatus are independently arranged, there is a problem that the appearance of the image forming apparatus becomes complicated. On the other hand, since the ground wiring is a thin wiring, there is a problem in that it is easily caught and obstructed when the ground wiring is provided alone outside the image forming apparatus.

  The present invention has been made in view of the above points, and an object of the present invention is to improve the appearance of the wiring arranged outside the image forming apparatus, and to form the image which can arrange these wirings with little difficulty. An object is to provide a wiring structure of a device.

  In order to solve the above-mentioned problems, an invention according to claim 1 of the present application is a wiring structure of an image forming apparatus provided with wiring for connecting a main body portion of the image forming apparatus and a mechanism portion installed outside the main body portion. Then, the ground wiring and the other wiring that are out of the mechanism section and are arranged outside the main body of the image forming apparatus are wrapped with a covering material, and the ground wiring wrapped with the covering material and the other wiring Wiring is introduced into the main body portion from an insertion portion provided in the main body portion, and the ground wiring that has come out from the end of the covering material inside the main body portion passes through the insertion portion to the outside of the main body portion. And then connecting to the main body.

  According to a second aspect of the present invention, in the wiring structure of the image forming apparatus according to the first aspect, the covering material is a cylindrical covering tube that covers the ground wiring and the other wiring. Features.

  According to a third aspect of the present invention, in the wiring structure of the image forming apparatus according to the first or second aspect, the insertion portion is provided in a metal cover member provided in the main body portion, and the insertion portion The ground wiring led out to the outside of the main body through the part is connected to the outer surface of the cover member.

  According to a fourth aspect of the present invention, in the wiring structure of the image forming apparatus according to the third aspect, the insertion portion is formed as an open / close cover that opens and closes an opening provided in the cover member. An earth wiring is attached to a fixing portion that fixes the open / close cover to the cover member.

  According to the invention described in claim 1 of the present application, the ground wiring and the other wiring which are provided outside the main body portion of the image forming apparatus and come out of the mechanism portion are enclosed by the covering material, and the covering material is provided. Introduce the ground wiring and other wiring enclosed in the main body from the insertion section provided in the main body into the main body, and connect the ground wiring from the end of the covering material inside the main body through the insertion section. Since the lead wire is led out to the outside and then connected to the main body, the ground wiring and other wiring arrangement structure arranged outside the image forming apparatus can be simplified and the appearance can be improved. . In particular, it is configured to enclose the ground wiring and other wiring with a covering material, introduce it once into the image forming apparatus, and then lead out only the ground wiring to the outside of the main body part again. Since the arrangement structure of the ground wiring exposed to the outside of the main body is simplified, the possibility that the ground wiring is caught or obstructed is reduced.

  According to the invention described in claim 2 of the present application, since the covering material is a cylindrical covering tube that covers the ground wiring and the other wiring, it is possible to easily attach the control wiring and the ground wiring and Can be further improved.

  According to invention of Claim 3 of this application, the insertion part is provided in the metal cover member with which a main-body part is provided, and the grounding wiring currently led out of the main-body part through the insertion part, Since it is connected to the outer surface of the cover member, the wiring exposed to the outside of the cover member is only the ground wiring and other wiring enclosed by the covering material, and the ground wiring derived again from the insertion portion, The appearance of the wiring structure exposed to the outside of the image forming apparatus can be improved.

  According to invention of Claim 4 of this application, the insertion part is formed in the opening-and-closing cover which opens and closes the opening part provided in the cover member, and earthing wiring is in the fixing | fixed part which fixes an opening-and-closing cover to a cover member. Since it is attached, it is possible to simplify the installation work of the ground wiring, and it is possible to simplify the structure by reducing the number of parts of the image forming apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an external configuration example of an image forming apparatus having a wiring structure according to an embodiment of the present invention. FIG. 2 is a side view of the image forming apparatus viewed from the back side. First, a schematic overall configuration of the image forming apparatus will be described with reference to these drawings. As an image forming apparatus to which the present invention is applied, a copier, a facsimile machine, a printer, or these functions are provided as long as the image forming apparatus has a mechanism unit different from a main body unit such as an ADF mechanism unit described below. Any of the so-called multifunction machines may be used. An image forming apparatus 1 shown in FIG. 1 includes a main body portion 2 and an ADF mechanism portion 4 provided on a document pressing cover 3 installed on the upper portion of the main body portion 2.

  The main unit 2 has a reading unit 5 that reads an image of a document on the upper side, and a recording unit 6 that records an image on a sheet on the lower side. The reading unit 5 includes an image reading device 7 that scans and reads an image of a document placed on a platen glass (not shown) disposed on the upper surface thereof. Further, an operation panel 8 on which operation keys 8 a for operating the image forming apparatus 1 are arranged is installed on the front side of the reading unit 5. The recording unit 6 includes a recording device 9 that records an image on a sheet, and a sheet feeding device 10 that includes a sheet feeding cassette 10 a that supplies the recording device 9 with the sheet.

  On the other hand, a document presser cover 3 is attached to the upper part of the reading unit 5. As shown in FIG. 2, the document presser cover 3 is attached to the upper end side on the back side of the main body 2 via hinge mechanisms 11 and 11, and is placed on the platen glass. It can be freely opened and closed between the closed position and the open position opened upward. An ADF mechanism 4 is provided on one side of the document presser cover 3. The ADF mechanism unit 4 includes a laterally substantially U-shaped paper conveyance path (not shown) in which a conveyance roller for conveying paper is installed, and a document supply tray 12 attached to a side part, A document discharge tray 13 provided on the document pressing cover 3 below the document supply tray 12 is provided. The ADF mechanism unit 4, with the document pressing cover 3 closed, sequentially feeds a plurality of documents placed on the document supply tray 12 to the inside and transports them through the sheet transport path, and reads the sheets into the reading unit. 5 is transferred onto the platen glass. When the image of the document passing over the platen glass is read by the image reading device 7, the document is discharged to the document discharge tray 13. On the other hand, as shown in FIG. 2, a sheet metal cover (cover member) 20 made of a metal plate-like member is attached to the back side of the main body 2 of the image forming apparatus 1. Although not shown, the sheet metal cover 20 is connected to a conductive member grounded in the main body 2.

  FIG. 3 is a view showing the opening 25 provided in the sheet metal cover 20 on the back side of the main body 2, and is a view showing a state in which the opening / closing cover 26 attached to the opening 25 is opened. As shown in FIG. 2 and FIG. 2, the control wiring 21 that connects the main body 2 and the ADF mechanism 4 is disposed on the back side of the image forming apparatus 1. The control wiring 21 is a wiring through which a control signal sent from the main body 2 to the ADF mechanism 4 flows, or a power supply current supplied to the ADF mechanism 4 from a power supply device (not shown) provided in the main body 2. The harness wiring is configured by bundling a large number of wirings such as a flowing wiring. Further, on the back side of the image forming apparatus 1, a ground wiring 22 extending from the ADF mechanism unit 4 is also provided. The ground wiring 22 is a wiring for releasing static electricity generated in the ADF mechanism unit 4 to the outside. The ground wiring 22 is composed of a single wire, and a connection terminal portion 22a connected to the sheet metal cover 20 is provided at the tip thereof. The control wiring 21 and the ground wiring 22 coming out from the ADF mechanism section 4 are covered and encapsulated by a resin-made cylindrical covering tube 23 that is a covering material (both of which are enclosed in the same covering tube 23). Wrapped)

  Further, the opening 25 provided in the sheet metal cover 20 shown in FIG. 3 is for connecting the control wiring 21 coming out from the ADF mechanism section 4 to a connection wiring (not shown) provided in the main body section 2. This is an opening for maintenance. An opening / closing cover 26 that opens and closes the opening 25 is attached to the opening 25. One side of the opening / closing cover 26 is rotatably attached by a hinge mechanism (not shown), and a fixing portion 27 for fixing the opening / closing cover 26 is provided on the rotating end side. The fixing portion 27 is configured by fastening a screw 27 a to a screw hole 26 a provided on the rotating end side of the opening / closing cover 26 and a screw hole 25 a provided on the end side of the opening 25 of the sheet metal cover 20. Is fixed to the sheet metal cover 20. In addition, an insertion portion 28 including a through hole for inserting the control wiring 21 and the ground wiring 22 is provided at a substantially central portion of the opening / closing cover 26.

  As shown in FIG. 3, the control wiring 21 and the ground wiring 22 enclosed in the covering tube 23 are introduced into the main body 2 from the insertion part 28. At this time, one open end (open end on the main body 2 side) 23 a of the covering tube 23 is inserted into the insertion portion 28 and disposed inside the main body 2. Therefore, the covering tube 23 has the entire control wiring 21 and the ground wiring 22 exposed on the back side of the main body 2 (the recessed portion 3a from which these wirings provided on the back side end of the document pressing cover 3 are drawn out. (See FIG. 2) to the insertion part 28 provided in the opening / closing cover 26 of the main body part 2). On the other hand, the control wiring 21 coming out from the open end 23a of the covering tube 23 inside the main body 2 is connected to a connection wiring (not shown) inside the main body 2 by a connector. Accordingly, when the ADF mechanism unit 4 is replaced or maintained, the opening / closing cover 26 is opened and the connector is attached / detached.

  In addition, the ground wiring 22 that comes out from the open end 23 a of the covering tube 23 inside the main body 2 is led out again to the outside of the main body 2 through the insertion portion 28. The ground wiring 22 led out to the outside of the main body 2 is fixed by being fastened together with a screw 27 a attached to the fixing portion 27 on the outer side (outer surface) of the opening / closing cover 26. Thus, when the back side of the image forming apparatus 1 is viewed from the outside with the open / close cover 26 closed, as shown in FIG. 2, the control wiring covered with the covering tube 23 is formed in a single wiring shape. 21 and the ground wiring 22 exit from the ADF mechanism section 4 and are inserted into the insertion section 28. Separately, the ground wiring 22 is led out from the insertion section 28, and the connection of the ground wiring 22 is performed. The terminal portion 22 a is attached by being fastened together with the screw 27 a of the fixing portion 27 of the opening / closing cover 26.

  As described above, in the wiring structure of the image forming apparatus 1 according to the present embodiment, the ground wiring 22 extending from the ADF mechanism unit 4 and the control wiring 21 that is another wiring are enclosed in the covering tube 23. In this state, the ground wire 22 is inserted into the main body 2 through the insertion portion 28 provided in the main body 2 and the ground wire 22 extending from the open end 23a of the covering tube 23 inside the main body 2. Since it is led out to the outside of the main body 2 through the insertion portion 28 and then connected to the main body 2, the wiring of the control wiring 21 and the ground wiring 22 arranged outside the image forming apparatus 1 is arranged. The installation structure is simplified and the appearance can be improved. In particular, the control wiring 21 and the ground wiring 22 are enclosed by the covering tube 23, and once introduced into the image forming apparatus 1, only the ground wiring 22 is led out to the outside of the main body 2 again. Since the arrangement structure of the ground wiring 22 exposed to the outside of the main body 2 is simplified, the possibility that the ground wiring 22 gets caught or gets in the way is reduced.

  In the present embodiment, since the ground wiring 22 is once introduced into the main body 2, it is not necessary to pull out the ground wiring 22 from the middle of the covering tube 23, so that the cylindrical covering tube 23 is used as a covering material. Can be used. Thereby, the appearance of the control wiring 21 and the ground wiring 22 can be further improved. Note that the wiring structure of this embodiment in which the control wiring 21 and the ground wiring 22 are covered with a cylindrical covering tube 23 is a wiring structure in which a belt-shaped tape material that has been conventionally used is spirally wound and covered. In comparison, the wiring installation work can be simplified, and the control wiring 21 and the ground wiring 22 which are covered with the tape material can be undisturbed, so that the wiring durability can be improved. Can be improved.

  Further, in the present embodiment, the ground wiring 22 led out of the main body 2 is attached to the fixing portion 27 that fixes the opening / closing cover 26 to the sheet metal cover 20, so These fixing points can be made common and the mounting work of the ground wiring 22 can be simplified, and the number of parts of the image forming apparatus 1 can be reduced to simplify the structure.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims, the specification, and the drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, the mechanism unit connected to the main body unit 2 in the wiring structure of the present invention is not limited to the ADF mechanism unit 4 described above, and is a mechanism unit different from the main body unit 2 installed outside the main body unit 2. Any mechanism other than the ADF mechanism 4 may be used. Further, the other wiring enclosed in the covering tube 23 together with the ground wiring 22 is not limited to the control wiring 21 described above and may be other types of wiring. Moreover, the structure of said coating tube 23 is an example, As a coating material used for the wiring structure of this invention, it is also possible to use the coating material of another material and a shape.

1 is a perspective view illustrating an external configuration example of an image forming apparatus including a wiring structure according to an embodiment of the present invention. FIG. 2 is a side view showing an example of an external configuration on the back side of the image forming apparatus. It is a figure which shows the opening part provided in the sheet metal cover of the main-body part of an image forming apparatus, and is a figure which shows the state which opened the opening-and-closing cover attached to this opening part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Main-body part 3 Document pressing cover 4 Automatic document conveyance mechanism part (ADF mechanism part)
5 Reading unit 6 Recording unit 7 Image reading device 8 Operation panel 9 Recording device 10 Paper feeding device 11 Hinge mechanism 12 Document supply tray 13 Document discharge tray 20 Sheet metal cover (cover member)
21 Control wiring 22 Ground wiring 23 Coated tube (coating material)
23a Open end (end)
25 Opening 26 Opening / Closing Cover 27 Fixing 27a Screw 28 Insertion

Claims (4)

A wiring structure of an image forming apparatus provided with wiring for connecting a main body of the image forming apparatus and a mechanism installed outside the main body,
Enclose the ground wiring and other wirings that come out of the mechanism section and are arranged outside the main body of the image forming apparatus with a covering material, and connect the ground wiring and other wirings that are enclosed with the covering material. The ground wire introduced from the insertion portion provided in the main body portion into the main body portion and exiting from the end portion of the covering material inside the main body portion is again returned to the outside of the main body portion through the insertion portion. A wiring structure of an image forming apparatus, wherein the wiring structure is connected to the main body after being derived. The wiring structure of the image forming apparatus according to claim 1,
The wiring structure of an image forming apparatus, wherein the covering material is a cylindrical covering tube that covers the ground wiring and other wiring. The wiring structure of the image forming apparatus according to claim 1 or 2,
The insertion portion is provided in a metal cover member included in the main body portion, and the ground wiring led out of the main body portion through the insertion portion is connected to an outer surface of the cover member. A wiring structure of an image forming apparatus. The wiring structure of the image forming apparatus according to claim 3,
The insertion portion is formed in an open / close cover that opens and closes an opening provided in the cover member, and the ground wiring is attached to a fixing portion that fixes the open / close cover to the cover member. Wiring structure of image forming apparatus.

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