JP5467500B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus.

  Patent Document 1 discloses that in an image forming apparatus provided with an electrical component that can be opened and closed, in order to reduce the number of parts, an electric wire wired from the electrical component to the apparatus main body presses in the direction in which the electrical component is opened, thereby opening the electrical component. What is comprised so that a state may be hold | maintained is disclosed.

JP 2007-114273 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus that can keep a plurality of wirings connected to an electrical part small while keeping a large opening / closing angle of the electrical part that can be opened and closed with respect to the image forming apparatus main body. .

  To achieve the above object, the present invention according to claim 1 is directed to an image forming apparatus main body, an electrical component provided in the image forming apparatus main body, and the electrical component being rotatable with respect to the image forming apparatus main body. A support unit for supporting, a plurality of wirings that electrically connect the image forming apparatus main body side and the electrical component unit side, and a wiring assembly member that bundles the plurality of wirings, wherein the wiring assembly member is It is an image forming apparatus arranged on the axis of the support part.

  According to a second aspect of the present invention, the plurality of wirings include at least two wirings having different thicknesses, and when the wiring is bent as the electrical component is opened and closed, the thick wiring has a smaller degree of bending than the thin wiring. The image forming apparatus according to claim 1, wherein the image forming apparatus is arranged as described above.

  The present invention according to claim 3 is the image forming apparatus according to claim 1 or 2, further comprising a branching section for branching a plurality of wirings from the wiring assembly member toward the electrical equipment section.

  A fourth aspect of the present invention is the image forming apparatus according to any one of the first to third aspects, wherein the wiring assembly member is configured such that a plurality of wirings are movable in the wiring assembly member.

  According to a fifth aspect of the present invention, in the image forming apparatus according to any one of the first to fourth aspects, the wiring assembly member includes guide portions provided so as to face each other so as to sandwich the plurality of wirings.

  According to a sixth aspect of the present invention, the wiring assembly member is provided on one of the guide portions so as to protrude toward the other of the guide portions, and the wiring is removed from the previous wiring assembly member. The image forming apparatus according to claim 5, further comprising a wiring drop prevention unit for preventing the wiring loss.

  According to a seventh aspect of the present invention, in the present invention, the wiring assembly member is formed in a curved shape so as to avoid hitting the main body of the image forming apparatus with the opening / closing of the electrical component, and has a main body side surface. Or an image forming apparatus.

  The present invention according to claim 8 further includes a covering portion that covers the outside of the electrical component portion, and the wiring assembly member has a covering portion side surface formed in a curved shape so as to prevent the covering portion from hitting. An image forming apparatus according to claim 1.

  According to the first aspect of the present invention, the open / close angle of the electrical component that can be freely opened and closed with respect to the image forming apparatus main body is kept large compared to the case where the present configuration is not provided, and a plurality of electrical components connected to the electrical component are provided. The wiring can be reduced in size compared with the case where the present configuration is not provided.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the load on the bending of the wiring accompanying the opening and closing of the electrical component is reduced as compared with the case where this configuration is not provided. Can do.

  According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention according to the first or second aspect, the connection work of the wiring to the electrical part can be facilitated as compared with the case where the configuration is not provided. it can.

  According to the fourth aspect of the present invention, in addition to the effect of the present invention according to any one of the first to third aspects, it is possible to absorb the load of the wiring due to the movement of the wiring accompanying the opening and closing of the electrical component.

  According to the fifth aspect of the present invention, in addition to the effect of the present invention according to any one of the first to fourth aspects, it is possible to regulate the moving direction of the wiring accompanying the opening / closing of the electrical component.

  According to the sixth aspect of the present invention, in addition to the effect of the present invention according to the fifth aspect, it is possible to prevent the wiring from being detached from the wiring assembly member with the opening / closing of the electrical component.

  According to the seventh aspect of the present invention, in addition to the effect of the present invention according to any one of the first to sixth aspects, it is possible to avoid the wiring assembly member from hitting the image forming apparatus main body as the electrical component is opened and closed. .

  According to the eighth aspect of the present invention, in addition to the effect of the present invention according to any one of the first to seventh aspects, it is possible to prevent the wiring assembly member from hitting the covering portion.

1 is a side view illustrating an outline of an image forming apparatus according to an embodiment of the present invention. In the image forming apparatus according to the embodiment of the present invention, it is a perspective view showing the vicinity of the electrical component when the electrical component is opened. In the image forming apparatus according to the embodiment of the present invention, it is a perspective view showing the vicinity of the electrical component when the electrical component is closed. It is a top view which shows the wiring assembly member used for the image forming apparatus which concerns on embodiment of this invention. FIG. 5 is a side view showing the wiring assembly member used in the image forming apparatus according to the embodiment of the present invention, viewed from the direction A in FIG. 4. FIG. 6 is a cross-sectional view taken along line B-B in FIG. 5, showing a wiring assembly member used in the image forming apparatus according to the embodiment of the present invention. FIG. 3 is a side view of a branch portion used in the image forming apparatus according to the embodiment of the present invention.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an outline of an image forming apparatus 10 according to an embodiment of the present invention. The image forming apparatus 10 is, for example, an electrophotographic system for color, and includes an image forming unit 12 and a document reading device 14.

  The image forming unit 12 includes an image forming apparatus main body 16, and in the image forming apparatus main body 16, a photoconductor 18 as an image holding member, a charger 20 that uniformly charges the photoconductor 18, and this An exposure device (optical writing device) 22 that forms a latent image on the photosensitive member 18 that is uniformly charged by the charger 20, and a development that visualizes the latent image on the photosensitive member 22 formed by the exposure device 22 with toner. The apparatus 24 and an intermediate transfer body 26 to which the toner image formed by the developing device 24 is transferred.

  The developing device 24 is, for example, a rotary type, and includes a toner cartridge 28 that stores toner of four colors of yellow, yellow, magenta, cyan, and black, and the rotation support shaft 30 is the center. As shown in FIG. 1, it is driven to rotate in one direction (clockwise in FIG. 1).

  The four-color toner cartridges 28 are arranged at intervals of 90 ° about the rotation support shaft 30 and each have a developing roll 32. The developing roll 32 is configured to supply toner to the photoreceptor 18.

  The intermediate transfer body 26 is stretched by a primary transfer roll 34, a secondary transfer backup roll 36, and a plurality of (eg, three) tension rolls 38, and is driven to rotate in one direction (clockwise in FIG. 1). It has become.

  A sheet storage unit 40 is provided at the lower part of the image forming apparatus main body 16. In addition, a paper discharge unit 42 is provided in the upper part of the image forming apparatus main body 12. A paper transport path 44 is formed upward from the paper container 40.

  The paper stored in the paper storage unit 40 is fed out by a feed roll 46, transported by a transport roll 48 provided in the paper transport path 44, and temporarily held by a registration roll 50 provided in the paper transport path 44, The toner image on the intermediate transfer body 26 is transferred by passing between the secondary transfer roll 52 provided opposite to the secondary transfer backup roll 36 and the intermediate transfer body 26, and is also provided in the paper transport path 44. The toner image is fixed by the fixing device 54 and discharged to the paper carry-out section 42 by the discharge roll 56.

  The document reading device 14 optically reads a document and is provided above the paper discharge unit 42. An operation display device (user interface device) 58 is disposed on, for example, a pedestal portion of the document reading device 14.

  The electrical unit 60 is provided in the image forming apparatus main body 16 and is provided, for example, along the side surface on the side opposite to the paper conveyance path.

  The configuration around the electrical unit 60 will be described in detail. FIG. 2 is a perspective view showing the vicinity of the electrical component when the electrical component 60 is opened. FIG. 3 is a perspective view showing the vicinity of the electrical component when the electrical component 60 is closed.

  The image forming apparatus main body 16 described above is provided with a main body side frame 62. On the other hand, the electrical unit 60 includes a wiring board 64 and a wiring board holding part 66 that holds the wiring board 64. The main body side frame 62 and the wiring board holding part 64 are rotatably connected via support parts 68, 68, whereby the electrical unit 60 is rotatable with respect to the image forming apparatus main body 16. The electrical component 60 is opened and closed when maintenance of the image forming apparatus is performed.

  The support parts 68 and 68 are comprised from the hinge provided in the perpendicular direction, for example. That is, for example, the body side frame 62 is provided with hinge receivers 70, 70, the board holding part 66 is provided with insertion parts 72, 72, and the insertion parts 72, 72 are inserted into the hinge receivers 70, 70 so as to be rotatable. Has been configured. An axis that becomes the rotation center of the support portions 68 and 68 is indicated as L in FIG.

  A plurality of wirings 74a, 74b, 74c, and 74d (in the case of displaying arbitrary wiring, the wiring 74 is used) electrically connects the main body side and the wiring board 64 of the electrical component 60. For example, the wiring 74 a is used for a user interface, and connects the display operation device 58 and the wiring board 64 described above. For example, the wiring 74b is for transmitting a read image, and connects the document reading device 14 and the wiring board 64 described above. For example, the wiring 74c is for USB, and a USB connection unit (not shown) and the wiring board 64 are connected. For example, the wiring 74d is for transmitting an image reading device control signal, and connects the document reading device 14 and the wiring board 64.

  The wiring assembly member 76 holds a plurality of wirings 74 in a bundle. The wiring assembly member 76 is fixed to the wiring board holding unit 66 and rotates together with the electrical component 70 when the electrical component 70 is opened and closed. The wiring assembly member 76 is provided above the support portion 68 positioned above. Further, the wiring assembly member 76 is disposed on the axis L of the support portions 68 and 68 described above. Here, being disposed on the axis L means that the axis L hits at least a part of the wiring assembly member 76. When the electrical component 60 is opened and closed, the wiring 74 rotates around the portion held by the wiring assembly member 76, is bent, and moves in the axial direction. However, the wiring assembly member 76 is the axis of the support portions 68 and 68. Since it is arranged on L, the movement amount of the wiring 74 is reduced.

  The branch part 78 is provided in the wiring board holding part 66 and is provided between the wiring assembly member 76 and the wiring board 64. This branching portion 78 branches each wiring 74 bundled by the wiring assembly member 76 so that the branched wiring 74 can be easily connected to the wiring board 64.

  The wiring 74 has a different thickness. That is, in this embodiment, the user interface wiring 74a is the thickest compared to the other wirings 74b to 74d, but the wiring 74a is positioned above the other wirings 74b to 74d on the main body side, The branch portion 78 is positioned below the other wirings 74b to 74d. For this reason, when the electrical component 60 is opened and closed, the degree of bending of the wiring 74a is smaller than that of the other wirings 74b to 74d, and the load on the wiring 74a is reduced.

  As shown in FIG. 3, when the electrical component 60 is closed, the periphery of the electrical component 60 is covered with a cover (covering portion) 80. The cover 80 is detachably fitted to the main body side frame 62.

Next, the wiring assembly member 76 will be described in detail.
4 is a plan view of the wiring assembly member 76, FIG. 5 is a side view seen from the direction A in FIG. 4, and FIG. 6 is a sectional view taken along line BB in FIG.

  The wiring assembly member 76 includes guide portions 82 and 82 that face each other vertically. A wiring 74 is inserted into the space between the guide portions 82 and 82 so as to restrict the vertical movement of the wiring 74. Further, the wiring assembly member 76 has a cover side surface 84, a main body side surface 86, and a substrate circuit side surface 88. The cover side surface 84 has a connection wall 90 that connects the guide portions 82 and 82 in a closed manner. The cover side surface 84 is formed in a curved shape so as to be recessed inward, and prevents the corner portion of the cover 80 from hitting as shown in FIG. Further, the movement of the wiring 74 inserted between the guide portions 82 and 82 toward the cover side is restricted by the connection wall 90 on the cover side surface 84.

  The main body side surface 86 is opened toward the main body side and serves as an entrance of the wiring 74. The main body side surface 86 is formed in a curved shape so as to protrude outward, and as shown in FIG. 3, it avoids hitting the main body side frame 62 when the electrical component 60 is opened and closed. The substrate circuit side surface 88 is opened toward the branch portion 78 and serves as an outlet of the wiring 74.

At the end of the upper guide portion 82 opposite to the cover side surface 84, a wiring drop prevention portion 92 is provided so as to protrude downward. The wiring drop prevention unit 92 prevents the wiring 74 from coming off the wiring assembly member 76.
In this embodiment, the wiring omission prevention portion 92 is formed in the upper guide portion 82, but the present invention is not limited to this, and for example, it may be formed so as to protrude upward in the lower guide portion 82. Alternatively, both guide portions 82 and 82 may be formed.

Next, the branch part 78 will be described in detail.
FIG. 7 is a side view showing the branching portion 78.
The branch portion 78 has an inlet portion 94 that is narrowly formed facing the wiring assembly member 76 and an outlet portion 96 that is widened in a fan shape so as to face the wiring substrate 64. The branch portion 78 is provided with a plurality of guide walls 98 and fixing claws 100 for fixing the wires 74a, 74b, 74c, and 74d, respectively. In this embodiment, at the exit portion 96, the read image transmission wiring 74b, the image reading device control signal transmission wiring 74d, the USB wiring 74c, and the user interface wiring 74a are arranged in this order from above. It is connected to the connection port of the wiring board 64 arranged in order.

  In addition, in the said embodiment, although the wiring assembly member 76 was fixed to the electrical equipment part 60 side, you may fix to the main body side as other embodiment.

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 12 Image forming part 14 Document reading apparatus 16 Image forming apparatus main body 58 Operation display apparatus (user interface apparatus)
60 Electrical component 62 Body side frame 64 Wiring boards 74a, 74b, 74c, 74d Wiring 76 Wiring assembly member 78 Branching portion 80 Covering portion (cover)
82 Guide portion 84 Cover side surface 86 Body side surface 92 Wiring omission prevention portion

Claims (7)

An image forming apparatus main body;
An electrical component provided in the main body of the image forming apparatus;
A support unit that rotatably supports the electrical unit with respect to the image forming apparatus main body;
A plurality of wirings that electrically connect the image forming apparatus main body side and the electrical component side;
A wiring assembly member for bundling the plurality of wirings,
The wiring assembly member is disposed on an axis of the support;
The plurality of wirings include at least two wirings having different thicknesses, and each of the wirings is positioned above the wiring assembly member on one of the image forming apparatus main body side and the electrical component side , and the thick wirings Is positioned above the support portion in the axial direction with respect to the thin wiring, and on the other hand, each wiring is positioned below the wiring assembly member, and the thick wiring is positioned below the thin wiring in the axial direction of the support portion. An image forming apparatus arranged to do so.   The image forming apparatus according to claim 1, further comprising a branching part that branches a plurality of wirings from the wiring assembly member toward the electrical component part.   The image forming apparatus according to claim 1, wherein the wiring assembly member is configured such that a plurality of wirings are movable in the wiring assembly member.   4. The image forming apparatus according to claim 1, wherein the wiring assembly member includes guide portions provided to face each other so as to sandwich the plurality of wirings. 5.   The wiring assembly member is provided on any one of the guide portions so as to protrude toward the other of the guide portions, and has a wiring omission prevention portion that prevents the wiring from coming out of the wiring assembly member. Item 5. The image forming apparatus according to Item 4.   6. The image forming apparatus according to claim 1, wherein the wiring assembly member is formed in a curved surface and has a main body side surface so as to avoid contact with the main body of the image forming apparatus as the electric component is opened and closed.   The covering part which covers the outer side of the said electrical equipment part is further provided, and the said wiring assembly member has the covering part side side surface formed in the curved surface shape so that the said covering part may contact | win. Image forming apparatus.

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