JP4819393B2 - Electronic device mounting structure, electronic device using the same, and image forming apparatus - Google Patents

Description

The present invention relates to an electronic device mounting structure, an electronic device, and an image forming apparatus of an electronic device. The electronic device is used in an image forming apparatus such as an electronic device main body, an electronic device such as an OA device, a copying machine, a fax machine, and a printer. The present invention relates to an electrical component mounting structure.

  In recent years, electronic devices have been improved in functionality, and the mounting density of the devices has increased accordingly. For example, in an image forming apparatus, the number of drive units and components that control them increases as digitization and full color progress, and if an option is added according to the user's request, it is also necessary to add that control component Occurs.

  In such an image forming apparatus, in order to improve the maintenance and the mounting workability of the optional parts, a drive part is provided at the rear of the apparatus body as in Patent Document 1, and a control part is used as a unit case as in Patent Document 2. A device that is attached and configured to support a fulcrum so as to be pivotable with respect to the rear portion of the apparatus main body, and a unit that is configured to be slidable with respect to the apparatus main body are employed.

In addition, since more electromagnetic waves are generated from the control board that can be taken inside the unit case, the unit case is often surrounded by a sheet metal to have a box-type structure.
JP 2001-334725 A JP 2004-085889 A

  In general, the drive component on the device body side and the control component on the unit case side are connected by a control line, but the control line must be made as short as possible in order to be less susceptible to noise. Furthermore, when the length is shortened, the unit case must not be opened / closed or moved, and the maintenance should not be affected. At this time, in the configuration of Patent Document 2, the length of the control line is required so that the control line does not come off even when the unit case is pulled out from the apparatus main body. In addition, when the unit case is housed, there is a possibility that the control line is pinched by the apparatus main body and breaks.

  Moreover, in order to make the control line length the shortest, as in Patent Document 1, a control line is provided near the rotation fulcrum of the unit case. However, in order to prevent the connection part of the control line from coming off, the control line is usually mounted with a predetermined play. There is a possibility of being caught in the case.

  Therefore, the present invention solves these problems, can make the length of the connecting member such as a control line between the unit case and the main body as short as possible, and the connecting member does not get in the way when the unit case is moved, And it aims at providing the attachment structure of the electrical equipment part which does not have a possibility of damaging a connection member, an electronic device, and an image forming apparatus.

The invention of claim 1
An electronic device body,
An electrical component that houses components for operating the electronic device body;
A connection member for electrically connecting the electronic device main body and the electrical component;
A guide holding unit that rotatably holds the unit case so that a positional relationship between one end of a box-shaped unit case provided in the electronic device main body and provided in the electrical unit and the electronic device main body can be changed;
A connection guide portion for guiding so as to elastically deform or move between the connecting member and the electronic apparatus body and the unit case with the change of the position by rotation of the unit case,
In the mounting structure of the electrical equipment part of the electronic device comprising:
The connection guide portion includes a plurality of binding portions that can be inserted into the connection member in a frame shape,
Disposing the binding portion constituting the connection guide unit into the space formed between the outer wall surface of the unit case and the guide surface of the guide holding portion erecting towards the outer wall of the unit case,
The plurality of bundling portions include those made of an elastically deformable resin, and the elastically deformable resin-made bundling portions are deformed as the unit case is rotated to move the position of the connection member. Keep it movable,
This is a mounting structure for an electrical component of an electronic device.

The invention of claim 2
In the mounting structure of the electrical equipment part of the electronic device according to claim 1,
An insertion hole for the connection member is provided in the lower part of the unit case , and the connection member can be wired from the lower part of the unit case to the electronic device body through the insertion hole,
A direction in which the connecting member is guided by the guide surface of the guide holding portion, a plurality of bundling unit so that the directions cross to the connection member is guided by the front Kiyui bundle unit arranged,
The bundling portion provided at the portion where the guide directions of the connecting members intersect is the bundling portion capable of elastic deformation.

The invention of claim 3
In the mounting structure of the electrical equipment part of the electronic device according to claim 1 or 2,
The guide surface of the guide holding part is provided adjacent to the first guide surface for guiding the movement of the unit case by rotation, and in a direction away from the first guide surface. The second guide surface is curved so as to be guided.

The invention of claim 4
In the mounting structure of the electrical equipment part of the electronic device according to any one of claims 1 to 3,
It said guide holding portion of the wall surface of the unit case, to come and the unit case is moved so as to be separated from the electronic apparatus main body, the exterior of the electronic device main body Hairikomeru, to form a recessed notch,
It is characterized by that.

The invention of claim 5
In the mounting structure of the electrical equipment part of the electronic device according to any one of claims 1 to 4,
The guide holding portion includes a hinge member that connects and holds the electronic device main body and the unit case so as to be openable and closable.
It is characterized by that.

A sixth aspect of the present invention is an electronic device comprising the mounting structure for an electrical component of the electronic device according to any one of the first to fifth aspects.

According to a seventh aspect of the present invention, there is provided an image forming apparatus comprising the mounting structure of the electrical equipment part of the electronic device according to any one of the first to fifth aspects.

According to the present invention, can minimize the length of the connecting member between the electric part and the electronic apparatus main body, and along with it less susceptible to noise and not connecting member is a hindrance during position change of the electrical part The electrical component can be opened greatly.

  Embodiments as the best mode for carrying out the present invention will be described below with reference to the drawings.

  Hereinafter, an image forming apparatus according to the present invention will be described with reference to the drawings. 1 is a sectional view of an image forming apparatus according to an embodiment of the present invention, FIG. 2 is a partially cut perspective view of the image forming apparatus according to the embodiment, and FIG. 3 is an enlarged perspective view of a main part of the image forming apparatus shown in FIG. 4 is an enlarged perspective view of main parts of the image forming apparatus shown in FIG. 2, FIG. 5 is an enlarged plan view of main parts of the image forming apparatus shown in FIG. 2 in a closed state, and FIG. 6 is shown in FIG. FIG. 7 is an enlarged plan view of the main part of the image forming apparatus in the open state of the electrical equipment, FIG. 7 is an enlarged plan view of the upper surface of the image forming apparatus in the closed state, and FIG. 8 is the image forming apparatus shown in FIG. It is an enlarged plan view of the upper surface in the electric transmission apparatus open state.

  As shown in FIG. 1, the image forming apparatus 100 according to this example includes an image forming unit (printer unit) 101, a scanner unit 102 disposed above the image forming unit 101, and a supply unit disposed below the image forming unit 101. A paper device 103.

  The scanner unit 102 reads and reads a document placed on a contact glass (or a document set on an automatic document feeder and transported to a reading position) by a scanning instruction from an operation unit. The transmitted image data is directly transmitted to the image forming unit 101.

  When a reading instruction is given, transfer sheets are separated and sent one by one from the sheet feeding device 103 in accordance with the image forming operation timing in the image forming unit 101, and the image forming unit is conveyed by a conveying roller disposed in the sheet conveying path. 101 is sent.

  The image forming unit 101 includes a photoconductor unit, a writing unit, a developing unit, an intermediate transfer unit, a paper transfer unit, and a fixing unit. The photosensitive member is provided with a photosensitive belt 10 having an organic photosensitive layer formed on the surface thereof. Around the photoconductor belt 10, a charger 11, a plurality of developing units 12, and a photoconductor cleaning device 13 are arranged. The photoconductor belt 10 rotates in the direction of the arrow when a high voltage is applied to the charger 11. Are uniformly charged.

  Color image information, for example, image information read by a scanner means or a color image signal from a computer is converted into an optical signal, and black (Bk), cyan (C), magenta (M), yellow (Y) are converted by a laser. Optical writing corresponding to the image signal is performed on the uniformly charged photoreceptor belt 10 through the writing unit 14 to form an electrostatic latent image. The electrostatic latent image is visualized by electrostatically adsorbing toner charged with a charge opposite to that of the electrostatic latent image by each developing unit 12 for each color (Bk, C, M, Y). (Development).

  There is an intermediate transfer belt 15 on the right side of the photosensitive belt 10 in the figure, and the intermediate transfer belt 15 is applied by applying a charge opposite to the toner to the intermediate transfer belt 15 at the contact portion between the intermediate transfer belt 15 and the photosensitive belt 10. The toner image is transferred onto the toner image. By performing this operation four times, a four-color superimposed image is formed on the intermediate transfer belt 15, and this superimposed image is transferred onto the transfer paper sent from the lower sheet feeding device 103 by the conveying roller 16, which is opposite to the toner. The image is transferred by a paper transfer roller 18 that applies an electric charge. The transfer paper onto which the image has been transferred is conveyed to a fixing device (not shown) to melt and fix the toner image. In the case of single-sided printing, the transfer paper exiting the fixing device is discharged as it is to the paper discharge unit 104, and in the case of double-sided printing, the image surface is reversed through a reverse conveyance path (not shown), and the back side After the image is transferred and fixed to the paper, it is discharged to the paper discharge unit 104.

  On the other hand, each of a plurality (four in the figure) of the developing units 12 is detachable independently from the image forming unit main body 50. Since each developing unit is common except for the toner to be stored, the black toner developing unit 12 at the top is described below as a representative. The developing unit 12 includes a developing roller 20, a toner supply roller 21, a doctor roller 22 that is a toner layer regulating member, a first transport paddle 23, a second transport paddle 24, and a third transport paddle 25.

  The developing unit 12 is filled with toner from the first transport paddle 23 to the third transport paddle 25, and the transport paddle rotates to send the toner forward, that is, to the developing roller 20 side. . Each transport paddle is formed of a soft material such as polypropylene, and uses its elasticity to reliably transport the toner forward while sliding on the inner wall of the developing unit 12. The conveyed toner is supplied from the foamed polyurethane supply roller 21 to the developing roller 20. The toner supplied to the developing roller 20 is charged and thinned by the doctor roller 22, and the electrostatic latent image formed on the photosensitive belt 10 is developed and visualized.

  The developing unit 12 can be brought into and out of contact with the photosensitive belt 10 and is normally in contact with the photosensitive belt 10 and is separated by a separation spring (not shown). Can be contacted. The mechanism for performing the contact / separation operation includes a sliding portion 12a of the developing unit 12 and a guide rail 54 attached to the image forming unit main body 50 side.

  In such an image forming apparatus 100, an electrical component 200 is disposed on the back surface of the image forming apparatus 100 as shown in FIG. The electrical component 200 has a two-layer structure from the front of the apparatus to the back side. That is, the front side layer of the apparatus is configured to be attached to the rear plate of the image forming apparatus 100, and includes a drive unit 211 that drives paper feed, paper discharge, photoconductor, development unit, and the like, and the image forming apparatus 100 including the drive unit 211. A power supply unit 212 for supplying power to predetermined components, an I / O board 213, and the like

  On the other hand, the back side layer of the apparatus is attached to a base different from the front side layer of the apparatus and is unitized and arranged in a unit case 223. A controller 221 and a writing / reading control unit 222 for controlling the scanner unit 102, the drive unit 211, and the like are provided on the back side of the apparatus. The unit case 223 is formed of a sheet metal, and is pivotally supported so as to be rotatable in a door shape with a vertical direction as an axis with respect to the apparatus main body with fulcrums 231 and 232 forming hinge members as fulcrums.

  A writing harness 241 for connecting the writing / reading control unit 222 and the image forming unit 101 as a connecting member between the main body of the image forming apparatus 100, the front side layer of the apparatus, and the back side layer of the apparatus, and scanner means 102, a scanner harness 242 that connects the electrical component 200, a drawer harness 243 that connects the I / O board 213 and the controller 221, and a control harness 244 that connects the controller 221 and the writing / reading control unit 222 on the front side of the apparatus. ing. Here, each harness is a collection of a plurality of signal lines, and is bundled or formed in a flat plate shape as necessary.

  The unit case 223 is a sheet metal box-shaped member. In addition to the fulcrums 231 and 232 formed on the upper and lower wall portions 224 and 225, the unit case 223 has a notch 226 that is recessed toward the front of the apparatus as shown in FIG. Is formed. Thus, even when the unit case 223 is opened with respect to the image forming apparatus 100, the exterior 260 enters the notch 226 and does not collide. In this way, the electrical unit 200 can be greatly opened from the image forming apparatus 100 to improve the maintainability and contribute to the downsizing of the apparatus. In the figure, reference numeral 261 denotes an exterior panel.

  In addition, the lower wall portion 225 of the unit case 223 is provided with an insertion hole 250 through which the control harness 244 attached to the electrical unit on the front side of the apparatus from the controller 221 is inserted and guided.

And the outer wall of the unit case 223 in this example, the space portion is formed between the portion forming the fulcrum 231 and 232 which is the holding portion, the guide holder 300 is a connection guide unit, the harness clamp 320, 321, 322 is arranged. In this example, the harness clamps 320, 321, and 322 form a binding part.

  That is, the lower fulcrum 231 is attached to the guide holder 300, and the guide holder 300 is attached to the apparatus main body via the bracket.

  Here, the vertical wall of the guide holding unit 300 includes a guide surface 300 a for guiding the harness guided from the insertion hole 250 of the unit case 223 to the front side of the apparatus, and the harness when the unit case 223 is opened with respect to the image forming apparatus 100. Is attached to the guide surface 300a. The harness clamps 320 and 321 made of nylon resin are attached to the guide surface 300a to bundle the control harness 244 and prevent predetermined flapping in the vertical and horizontal directions. The guide surface 300b is curved and forms a smooth joint surface with the curved portion 300a. For this reason, even if the control harness 244 contacts the guide holding part 300, the control harness 244 is not damaged.

  Further, an elastically deformable nylon resin harness clamp 322 is attached to the front side surface of the apparatus. As shown in FIGS. 3 and 4, the harness clamp 322 is deformed in the direction of arrow A in FIG. 4 to guide the control harness 244 in accordance with the movement of the control harness 244 accompanying opening and closing of the unit case 223. Reference numerals 323, 324, and 325 denote other harness clamps for bundling the control harness 244.

  With such a configuration, when the unit case 223 is closed with respect to the image forming apparatus 100, the control harness 244 is unitized by the insertion hole 250, the guide surface of the guide holding unit 300, the harness clamps 320 and 321, and the harness clamp 322. Guided from the case 223 to the electrical unit 200 on the front side of the apparatus.

  On the other hand, when the unit case 223 is opened with respect to the image forming apparatus 100, the control harness 244 is guided to the guide surface 300 a of the guide holding unit 300 and the harness clamps 320 and 321. Further, the harness clamp 321 is elastically deformed, and the control harness 244 is held in a state where the harness clamp 321 is pulled with a predetermined force by a restoring force. For this reason, the control harness 244 is always held in the extended state and does not interfere with the opening operation of the unit case 223.

  When the unit case 223 is opened and closed with respect to the image forming apparatus 100, the control harness 244 returns to the normal shape of the harness clamp 321 while being guided by the guide surfaces 300 a and 300 b of the guide holding unit 300 and the harness clamps 320 and 321. The unit case 223 is closed while being pulled toward the front side of the apparatus by the restoring force to be used.

  Therefore, with a simple configuration, the control harness 244 can be prevented from being caught by the opening / closing operation of the unit case 223, and the smooth opening / closing operation of the unit case 223 and the accompanying disconnection of the control harness 244 can be prevented.

  In this example, as shown in FIG. 7, the drawer connector 400 of the drawer harness 243 that connects the I / O board 213 and the controller 221 is detachably attached to the upper wall portion of the unit case 223.

  In this example, as shown in FIG. 8, the drawer connector 400 can be easily detached from the unit case 223. Therefore, in this example, the drawer harness 243 can be made detachable without removing the unit case 223, and the maintainability can be improved.

  In this example, the image forming apparatus has been described as an example of the electronic apparatus. However, any electronic apparatus provided with a changeable positional relationship in the electronic apparatus main body can be applied to other electronic apparatuses such as an OA apparatus. .

  In the above example, the electrical part is hinged and the vertical axis is used as a door to open and close like a door. However, the position of the opening / closing direction is horizontal, or other positions such as sliding are changed. Applicable to form.

It is sectional drawing of the image type apparatus which concerns on the Example of this invention. 1 is a partially cut perspective view of an image forming apparatus according to an embodiment. FIG. 3 is an enlarged perspective view of a main part of the image forming apparatus shown in FIG. 2. FIG. 3 is an enlarged perspective view of a main part of the image forming apparatus shown in FIG. 2. FIG. 3 is an enlarged plan view of a main part of the image forming apparatus shown in FIG. FIG. 3 is an enlarged plan view of a main part of the image forming apparatus shown in FIG. FIG. 3 is an enlarged plan view of an upper surface of the image forming apparatus illustrated in FIG. 2 in a closed state of a power transmission device. FIG. 3 is an enlarged plan view of an upper surface of the image forming apparatus illustrated in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Photoconductor belt 11 ... Charger 12 ... Developing unit 12a ... Sliding part 13 ... Photoconductor cleaning device 14 ... Writing unit 15 ... Intermediate transfer belt 16 ..Conveying roller 18 ... paper transfer roller 20 ... developing roller 21 ... toner supply roller 22 ... doctor roller 23 ... first conveying paddle 24 ... second conveying paddle 25 ... 3rd conveyance paddle 50 ... image forming part main body 54 ... guide rail 100 ... image forming apparatus 101 ... image forming part (printer part)
DESCRIPTION OF SYMBOLS 102 ... Scanner means 103 ... Paper feeder 104 ... Paper discharge part 200 ... Electrical equipment 211 ... Drive unit 212 ... Power supply unit 213 ... I / O board 221 ... · Controller 222 ··· Writing / reading control unit 223 ··· Unit cases 224 and 225 ··· Upper and lower wall portions 225 ··· Lower wall portion 226 ··· Notches 231 and 232 · · · fulcrum 241 ··· Write harness 242 ... Scanner harness 243 ... Drawer harness 244 ... Control harness 250 ... Insertion hole 260 ... Exterior 300 ... Guide holding part 300a ... Guide surface 300b ... Guide Surface 320 ... Harness clamp 321 ... Harness clamp 322 ... Harness clamp 400 ... Drawer connector

Claims (7)

An electronic device body,
An electrical component that houses components for operating the electronic device body;
A connection member for electrically connecting the electronic device main body and the electrical component;
A guide holding unit that rotatably holds the unit case so that a positional relationship between one end of a box-shaped unit case provided in the electronic device main body and provided in the electrical unit and the electronic device main body can be changed;
A connection guide portion for guiding so as to elastically deform or move between the connecting member and the electronic apparatus body and the unit case with the change of the position by rotation of the unit case,
In the mounting structure of the electrical equipment part of the electronic device comprising:
The connection guide portion includes a plurality of binding portions that can be inserted into the connection member in a frame shape,
Disposing the binding portion constituting the connection guide unit into the space formed between the outer wall surface of the unit case and the guide surface of the guide holding portion erecting towards the outer wall of the unit case,
The plurality of bundling portions include those made of an elastically deformable resin, and the elastically deformable resin-made bundling portions are deformed as the unit case is rotated to move the position of the connection member. Keep it movable,
A mounting structure for an electrical component of an electronic device. An insertion hole for the connection member is provided in the lower part of the unit case , and the connection member can be wired from the lower part of the unit case to the electronic device body through the insertion hole,
A direction in which the connecting member is guided by the guide surface of the guide holding portion, a plurality of bundling unit so that the directions cross to the connection member is guided by the front Kiyui bundle unit arranged,
The electronic device mounting structure according to claim 1, wherein a binding portion provided in a portion where the guide directions of the connection members intersect is the elastically deformable binding portion. The guide surface of the guide holding part is provided adjacent to the first guide surface for guiding the movement of the unit case by rotation, and in a direction away from the first guide surface. The mounting structure for an electrical component of an electronic device according to claim 1, wherein the mounting structure includes a second guide surface that is curved so as to be guided. It said guide holding portion of the wall surface of the unit case, to come and the unit case is moved so as to be separated from the electronic apparatus main body, the exterior of the electronic device main body Hairikomeru, to form a recessed notch,
The electronic device mounting structure for an electronic device according to any one of claims 1 to 3. The guide holding portion includes a hinge member that connects and holds the electronic device main body and the unit case so as to be openable and closable.
The mounting structure of the electrical equipment part of the electronic device according to any one of claims 1 to 4.   An electronic device comprising the mounting structure for an electrical component of an electronic device according to any one of claims 1 to 5. An image forming apparatus comprising the mounting structure for an electrical component of an electronic device according to claim 1.