JP5577828B2 - Image processing device - Google Patents

Description

  The present invention relates to an image processing apparatus such as a facsimile apparatus, a scanner apparatus, or a printer apparatus.

  Conventionally, as a technique related to this type of image processing apparatus, when wiring a signal line for transmitting an image signal and a power line for supplying driving power, a spacer member is interposed between the two approaching each other. Has been proposed (see, for example, Patent Document 1).

  Further, as a specific example of such a spacer member, it is also disclosed that a synthetic resin plate member can be used as a spacer member (see Patent Document 1: Paragraph [0025]).

JP-A-10-150515

  However, although Patent Document 1 describes a resin plate, Patent Document 1 does not disclose any specific form of such a resin plate. Further, Patent Document 1 does not have a specific description regarding matters such as where the spacer member is attached to the image processing apparatus and how the signal line and the power line are wired to the spacer member. .

  Therefore, when wiring multiple lines of signal lines and power lines in a limited narrow range, what kind of spacer member can be used to prevent the multiple lines of wiring from contacting each other, and wiring to such wiring paths It was unclear whether it would be possible to easily carry out this work.

  The present invention has been made in order to solve the above-described problem. The purpose of the present invention is to connect a plurality of wiring lines to each other when wiring a plurality of signal lines and power lines in a limited narrow range. Another object of the present invention is to provide an image processing apparatus having a structure capable of preventing the above-described problem.

Hereinafter, the configuration employed in the present invention will be described.
An image processing apparatus according to the present invention includes an image processing unit that can form an image on a medium or that can read an image from the medium, a control unit that controls the image processing unit , the image processing unit, and the control unit. Power is supplied to a frame that supports the power source, one or more signal lines for transmitting signals between the image processing unit and the control unit, and a power source for operating the image processing unit. to 1 and the system or systems more power lines, and a first holder member and a second holder member for holding said one channel or two channels or more signal lines and the one line or two lines or power lines, the The frame has a portion made of a sheet metal member, and the image processing unit is arranged on one side of the both sides sandwiching the portion made of the sheet metal member, and the control unit is arranged on the other side. , the first e The gap member and the second holder member are provided with a gap forming portion on either one or both, and the gap forming portion is interposed between the first holder member and the second holder member. The first holder member and the second holder member are overlapped with each other to form a gap between the first holder member and the second holder member . The holder member is positioned with respect to the frame by being brought into contact with a part of the frame, and the locking claw of the first holder member is locked to the locking portion on the sheet metal member side. Accordingly, the second holder member is attached to the upper end of the portion constituted by the sheet metal member, and the second holder member is positioned with respect to the first holder member by contacting the first holder member. The locking claw of the second holder member is locked to the locking portion on the first holder member side, thereby being attached to the upper end of the portion made of the sheet metal member together with the first holder member. The one or more signal lines and the one or more power lines include one set including at least one signal line and the other set including at least one power line. The one set is held by the first holder member, and the other set is held by the second holder member and is in contact with the upper end of the sheet metal member. without the is wired between the ride over an upper portion constituted by a sheet metal member on the other hand to the side and the other side, moreover, the signal lines the included in one set, and before Among the power lines included in the other set, with either one is wired to the gap, by the said gap across the front Stories second holder member and the other is wired to a position on the opposite side The signal line included in the one set and the power line included in the other set are prevented from approaching to a predetermined distance or less.

  According to the image processing apparatus formed in this way, since the interval forming portion protrudes from either one or both of the first holder member and the second holder member, it is only necessary to overlap the two holder members. A gap serving as a wiring path can be easily formed between the holder members.

  In addition, by wiring one signal line and one power line to the separated positions inside and outside the gap, the one signal line and one power line approach to a predetermined distance or less. Is prevented.

  Therefore, even when a plurality of signal lines and power lines are wired in a very narrow range, it is possible to prevent the plurality of lines from contacting each other by separating them into the first holder member side and the second holder member side. The electrical noise generated from the power line can be prevented from being transmitted to the signal line.

In the image processing apparatus of the present invention, the one set includes the signal line and the power line, and the first holder member is provided with a plurality of protrusions that define a plurality of regions each serving as a wiring path. The signal line and the power line included in the one set are wired in different regions defined by the protruding object, so that the signal included in the one set It is preferable to prevent the line and the power line from approaching to a predetermined distance or less.

  According to the image processing apparatus formed in this way, even in the first holder member, the signal line of one system and the power line of one system are prevented from approaching to a predetermined distance or less. Can be prevented from being transmitted to the signal line.

In the image processing apparatus of the present invention , the second holder member is positioned with respect to the first holder member by contacting the first holder member.

Therefore, Ki out readily optimize the relative positional relationship between the first holder member and a second holder member, because it has occurred a deviation in the positional relationship between the power lines and signal lines It is possible to prevent the wiring from being closer to the designed position.

In the image processing apparatus of the present invention, the first holder member and the second holder member, which is fixed to the frame of the image processing apparatus is provided, wherein the first holder member is a portion of said frame It is positioned with respect to the frame by abutting .

Therefore , the positions of the first holder member, the second holder member, and the frame can be optimized.

In the image processing apparatus of the present invention , the second holder member includes a first portion disposed on the upper side of the first holder member and a second portion disposed on a side of the first holder member. And the portion that continues from the first portion to the second portion is bent in a form that extends from the upper side of the first holder member to the side of the first holder member. It said first holder member preferably has a contact with the form on the inside of the portion adapted to the bent shape the second holder member has.

  According to the image processing apparatus formed in this way, when the first holder member and the second holder member are positioned, if the bent portion of the second holder member is used, the rough shape can be roughly obtained. Positioning can be performed. Therefore, the positioning operation and the assembly operation are facilitated as compared with those without such a bent portion.

FIG. 2 is a perspective view illustrating an appearance of the image forming apparatus. FIG. 2 is a longitudinal sectional view illustrating an outline of an internal structure of the image forming apparatus. FIG. 3 is a perspective view illustrating a structure of a frame included in the image forming apparatus. The left view which shows the periphery of a 1st holder member and a 2nd holder member. The periphery of a 1st holder member and a 2nd holder member is shown, (a) is the perspective view looked down from the left side front part upper part, (b) is the perspective view looked down from the right side front part upper part. The 1st holder member and a sub-frame are shown, (a) is the left view, (b) is the front view, (c) is the right view. The periphery of a 1st holder member and a 2nd frame is shown, (a) is the left view, (b) is the top view, (c) is an enlarged view of the A section shown to Fig.7 (a), (d) FIG. 8 is an enlarged view of a portion B shown in FIG. Explanatory drawing which shows the wiring path | route of the power line and signal wire which are wired by the 1st holder member. Explanatory drawing which shows the wiring path | route of the power line and signal wire which are wired by the 2nd holder member. Sectional drawing of the cut surface shown by the CC line in FIG.

  Next, an embodiment of the present invention will be described with an example. In the following description, in order to briefly describe the relative positional relationship between the respective units of the apparatus, the description will be made by using the respective directions of up, down, left, and right, front and back, which are also shown in the drawing.

[Structure of image forming apparatus]
As shown in FIG. 1, the image forming apparatus 1 includes a drawer-type paper feed cassette 5 at the lower front surface of the housing 3, and a lower end side at the front of the housing 3 and above the paper feed cassette 5. A cover 7 is provided that rotates so that the upper end side falls forward as the center of rotation. Further, on the upper surface of the housing 3, a paper discharge tray 9 for discharging a recording medium on which an image has been formed is formed.

  Further, as shown in FIG. 2, the image forming apparatus 1 is an apparatus including a tandem type image forming mechanism capable of forming an image by electrophotography, and includes a supply unit 11, a belt unit 12, a process cartridge 13, and a scanner unit. 14, a fixing unit 15, a discharge unit 16, a drawer 17, and the like.

  Among these, the supply unit 11 is configured to feed a sheet-like recording medium (for example, recording paper) stored in the paper feeding cassette 5 downstream of the conveyance path (the path shown by the two-dot chain line in FIG. 2). It is a device that sends it out.

The belt unit 12 is a device that conveys the recording medium fed from the supply unit 11 from the front to the rear while being sandwiched between the process cartridge 13.
Four sets of process cartridges 13 are arranged in series above the belt unit 12 at equal intervals. Each process cartridge 13 includes a photoconductor and a developing mechanism for developing an electrostatic latent image formed on the photoconductor.

  The scanner unit 14 is an apparatus that forms an electrostatic latent image on a photosensitive member by irradiating the photosensitive member included in each process cartridge 13 with laser light. The electrostatic latent image drawn on the photosensitive member by the scanner unit 14 is developed by a developing mechanism provided in the process cartridge 13 to become a toner image, and the toner image is transferred to a recording medium on the belt unit 12. Become.

  The fixing unit 15 is a device that fixes the toner image onto the recording medium by sandwiching the recording medium onto which the toner image has been transferred between rollers and applying heat and pressure. The recording medium that has passed through the fixing unit 15 is discharged from the discharge unit 16 to the discharge tray 9.

  The drawer 17 has a structure that can be pulled out forward of the apparatus when the cover 7 is opened. A process cartridge 13 is mounted on the drawer 17 so that the drawer 17 can be pulled out and the process cartridge 13 can be replaced.

  Further, the image forming apparatus 1 includes upper frames 21L and 21R and lower frames 23L and 23R as shown in FIG. 3 as members serving as a skeleton for supporting the various members described above.

  Of these, the upper frames 21L and 21R are sheet metal members and are mounted and fixed on the lower frames 23L and 23R. Further, sheet metal members such as a scanner plate 25, a scanner cover 26, a front beam 27, a rear beam 28, and an under beam 29 are interposed between the upper frames 21L and 21R.

  On the other hand, the lower frames 23L and 23R are resin members having lower rigidity than the upper frames 21L and 21R made of sheet metal. A front beam 31, a rear beam 32, and the like are interposed between the lower frames 23L and 23R.

  Inside the upper frames 21L and 21R, the supply unit 11, the belt unit 12, the process cartridge 13, the scanner unit 14, the fixing unit 15, the discharge unit 16, the drawer 17, and the like described above are stored. Further, the paper feed cassette 5 is stored inside the lower frames 23L and 23R.

[Structure of first holder member and second holder member]
As shown in FIGS. 4, 5A and 5B, a sheet metal sub-frame 33 is fixed to the left side surface of the upper frame 21L on the left side. The sub frame 33 is fixed to the upper frame 21L with high accuracy by being screwed into three screw holes formed in the upper frame 21L.

  Two printed wiring boards 35 and 36 are attached to the subframe 33. The two printed wiring boards 35 and 36 are used as a power line 37A for supplying power for driving various movable mechanisms provided in the image forming apparatus 1 and a signal line 37B for transmitting a signal such as an image signal. A plurality of harnesses 37 are connected.

  In addition, in the vicinity of the upper end of the upper frame 21L, each of the plurality of harnesses 37 is wired along a predetermined wiring path. Therefore, the first holder member 41 and the second holder member 42 that hold the plurality of harnesses 37 are used. (However, in FIG.5 (b), the 1st holder member 41 is illustrated and the illustration of the 2nd holder member 42 is abbreviate | omitted).

  Among these, the first holder member 41 has a boss 43 on the right side as shown in FIGS. 6A to 6C, and the boss 43 is formed on the subframe 33. By being inserted into the hole, the relative position in the front-rear and up-down directions with respect to the subframe 33 is positioned.

  The first holder member 41 is formed with four locking claws 45 </ b> A to 45 </ b> D that are hooked on the subframe 33, and each of the locking claws 45 </ b> A to 45 </ b> D is hooked on the subframe 33 side. As a result, the first holder member 41 is positioned relative to the subframe 33 in the left-right direction, and the rotation about the boss 43 is also restricted. As a result, the first holder member 41 is accurately fixed to the subframe 33. It has become.

  On the other hand, as shown in FIG. 7A and FIG. 7B, the second holder member 42 is overlaid on the upper side of the first holder member 41 and forms a gap with the first holder member 41. Thus, the first holder member 41 is fixed with high accuracy.

  More specifically, ribs 47A to 47F project from the upper surface side of the first holder member 41, and the second holder member 42 is mounted on the upper ends of the ribs 47A to 47F. Therefore, the ribs 47A to 47F are interposed between the first holder member 41 and the second holder member 42, so that a gap is formed in a portion where the ribs 47A to 47F do not exist, and this gap is used as a wiring space. It is available. That is, these ribs 47 </ b> A to 47 </ b> F function as an interval forming portion that forms a gap between the first holder member 41 and the second holder member 42.

  The second holder member 42 has a shape having a portion bent from the left end and extending downward to the left of the front end side of the portion mounted above the first holder member 41, and this bent portion 42A. The first holder member 41 is overlaid on the inner side.

  The second holder member 42 is positioned relative to the discharge unit 16 and the first holder member 41 in the front-rear and up-down directions. Specifically, as shown in FIG. 7C in which the portion A in FIG. 7A is enlarged, the positioning portion 53 of the second holder member 42 is placed on the boss 51 protruding from the left end of the discharge unit 16. As shown in FIG. 7 (d), in which fitting is performed, and the portion B in FIG. 7 (a) is enlarged, the contact portion 55 on the front end side of the second holder member 42 is abutted against the first holder member 41. Is positioned.

  Furthermore, the right side surface side of the portion protruding downward near the front end of the second holder member 42 is abutted against the first holder member 41, and in that state, the locking claw 57 is hooked on the first holder member 41 side. The relative position in the left-right direction is positioned with respect to the first holder member 41.

  The first holder member 41 configured as described above has one power line wiring path 61 and two signal line wiring paths 63 and 64 as shown in FIGS. Is formed. Among these, ribs 47A and 47B, holding pieces 65A and 65B, upper and lower partition pieces 66A and 66B, holding pieces 67A to 67D, and the like are provided at positions along the power line wiring path 61.

  The power line wired along the power line wiring path 61 extends in the front-rear direction below the holding pieces 65A and 65B on the right side of the ribs 47A and 47B, and curves to the left on the front end side. The portion curved leftward further extends in the left-right direction between the rib 47C and the rib 47D, passing below the upper and lower partition pieces 66A, 66B. Further, the portion extending in the left-right direction is curved downward on the left end side and extends in the up-down direction, and the portion extending in the up-down direction is held by the holding pieces 67A to 67D.

  Further, ribs 47A and 47B, holding pieces 69A to 69F, and the like are provided at positions along the signal line wiring path 63. The signal line wired along the signal line wiring path 63 extends in the front-rear direction below the holding pieces 69A and 69B on the left side of the ribs 47A and 47B.

  Further, the portion curved leftward on the front end side extends in the left-right direction at a position behind the rib 47C, curves downward on the left end side, extends in the vertical direction, and moves in the vertical direction. The extending portion is held by holding pieces 69C and 69D. Further, a portion that curves forward and extends in the front-rear direction on the lower end side thereof is held by holding pieces 69E and 69F.

  In such a signal line wiring path 63, a portion extending in the front-rear direction is relatively close to the power line wiring path 61, but both paths are partitioned by ribs 47A and 47B at that position. . Therefore, with such a power line wiring path 61 and a signal line wiring path 63, the power line and the signal line can be held at positions separated from each other.

  On the other hand, at positions along the other signal line wiring path 64, upper and lower partition pieces 66A and 66B, a holding piece 71, a partition wall 73, and the like are provided. A signal line wired along the signal line wiring path 66 extends in the left-right direction above the upper and lower partition pieces 66A, 66B between the rib 47C and the rib 47D, and curves downward on the left end side thereof. It extends in the vertical direction. A portion extending in the vertical direction is held by the holding piece 71.

  In such a signal line wiring path 64, the power line wiring path 61 is partitioned by upper and lower partition pieces 66 </ b> A and 66 </ b> B and a partition wall 73 even at a relatively close position. Therefore, with such a power line wiring path 61 and a signal line wiring path 64, the power line and the signal line can be held at positions separated from each other.

  Further, as shown in FIG. 9A to FIG. 9C, one power line wiring path 75 is formed in the second holder member 42. At positions along the power line wiring path 75, holding pieces 77A to 77E and the like are provided.

  In the power line wired along the power line wiring path 75, a portion extending in the front-rear direction is held by the holding pieces 77A to 77C, and a portion that curves on the front end side and extends in the left-right direction is the holding piece 77D. Held by. Further, the portion extending in the left-right direction is curved downward on the left end side and extends in the up-down direction, and the portion extending in the up-down direction is held by the holding piece 77E.

  In such a power line wiring path 75, the second holder member 42 is interposed between the signal line wiring paths 63 and 64 described above. Therefore, with such a power line wiring path 75 and signal line wiring paths 63 and 64, the power line and the signal line can be held at positions separated from each other.

  Moreover, since the second holder member 42 is a separate component from the first holder member 41, the wiring for the power line wiring path 61 and the signal line wiring paths 63 and 64 on the first holder member 41 has been finished. Later, attachment to the first holder member 41 can be performed.

  Therefore, although the power line wiring path 61 and the signal line wiring paths 63 and 64 are partially hidden under the power line wiring path 75, the second holder member is used when wiring to such a path. 42 does not get in the way, and wiring work can be performed easily.

  Further, as shown in FIG. 10, the first holder member 41 and the second holder member 42 are arranged at the upper end of the upper frame 21L, and thereby the wiring path (the power line wiring path 61 in FIG. 10). , 75 and the signal line wiring path 63 are formed at positions separated from the metal upper frame 21L.

  Therefore, the power line 37A and the signal line 37B wired in these wiring paths are wired at positions separated from the metal parts, and thereby the power line 37A and the signal line 37B are brought into contact with the metal parts. Therefore, it is possible to prevent damage from occurring along with the occurrence of a short circuit due to such damage.

[effect]
As described above, according to the image forming apparatus 1, the ribs 47 </ b> A to 47 </ b> F serving as the interval forming portions are provided on the first holder member 41 so that the first holder member 41 and the second holder member 42 are overlapped. Only by matching, a gap serving as a wiring path can be easily formed between both holder members.

  In addition, the signal line wiring paths 63 and 64 and the power line wiring path 75 are formed at spaced positions inside and outside the gap, and the two signal lines 37B and the one power line 37A are wired. The signal line 37B and the power line 37A can be prevented from approaching to a predetermined distance or less.

  Therefore, even when a plurality of signal lines 37B and power lines 37A are wired in a very narrow range, by separating them into the first holder member 41 side and the second holder member 42 side, the electrical generated from the power line 37A Noise can be suppressed from being transmitted to the signal line 37B.

  Further, the first holder member 41 is provided with projecting objects (ribs 47A to 47F) that demarcate the power line wiring path 61 and the signal line wiring paths 63 and 64, and are wired to these wiring paths. The signal line 37B and the power line 37A are prevented from approaching to a predetermined distance or less. Therefore, also on the first holder member 41, it is possible to suppress electrical noise generated from the power line 37A from being transmitted to the signal line 37B.

  Further, the first holder member 41 and the second holder member 42 are contacted with each other as a positioning portion that optimizes the relative positional relationship between the first holder member 41 and the second holder member 42. A contact portion 55 and a locking claw 57 are formed.

  Therefore, it is possible to easily optimize the relative positional relationship between the first holder member 41 and the second holder member 42 by using the contact portions 55 and the locking claws 57. Therefore, it is possible to prevent the power line 37A and the signal line 37B from being wired at positions closer to the designed positions because the positional relationship between the two has shifted.

  Of the first holder member 41 and the second holder member 42, the first holder member 41 causes the sub frame 33 to be brought into contact with the boss 43 and the locking claws 45 </ b> A to 45 </ b> D against a part of the sub frame 33. It is positioned with respect to the upper frame 21L fixed with high precision. Therefore, the relative positional relationship can be optimized for all of the first holder member 41, the second holder member 42, the sub frame 33, and the upper frame 21L.

  Further, since the second holder member 42 is overlapped so as to contact the first holder member 41 inside the bent portion 42A, when the first holder member 41 and the second holder member 42 are positioned, If the bent portion 42A of the two holder member 42 is used, rough positioning can be performed. Therefore, the positioning operation and the assembling operation are facilitated as compared with those without such a bent portion 42A.

[Modifications, etc.]
As mentioned above, although embodiment of this invention was described, this invention is not limited to said specific one Embodiment, In addition, it can implement with a various form.

  For example, in the above-described embodiment, the ribs 47A to 47F that function as the interval forming portions are provided so as to project on the first holder member 41 side, but equivalent ribs may be provided on the second holder member 42 side. .

  Moreover, in the said embodiment, although the two power line wiring paths 61 and 75 and the two signal line wiring paths 63 and 64 were formed on the 1st holder member 41 and the 2nd holder member 42, The number of each wiring path is arbitrary.

  In the above embodiment, the image forming apparatus 1 is illustrated as an example of the image processing apparatus. However, the configuration of the present invention may be employed in the image reading apparatus. Alternatively, the configuration of the present invention may be employed in a multifunction machine or a facsimile machine that has both a function as an image forming apparatus and a function as an image reading apparatus.

  DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus, 3 ... Housing, 5 ... Paper feed cassette, 7 ... Cover, 9 ... Paper discharge tray, 11 ... Supply unit, 12 ... Belt unit , 13 ... Process cartridge, 14 ... Scanner unit, 15 ... Fixing unit, 16 ... Discharge unit, 17 ... Drawer, 21L, 21R ... Upper frame, 23L, 23R ... Lower frame, 25 ... scanner plate, 26 ... scanner cover, 27, 31 ... front beam, 28, 32 ... rear beam, 29 ... under beam, 33 ... subframe, 35, 36 ... printed wiring board, 37 ... harness (37A ... power line, 37B ... signal line), 41 ... first holder member, 42 ... second holder member, 42A ... ·bent Minute, 43, 51 ... boss, 45A-45D, 57 ... locking claw, 47A-47F ... rib, 53 ... positioning part, 55 ... contact part, 61, 75 ... Power line wiring path, 63, 64, 66 ... signal line wiring path, 65A, 65B, 67A-67D, 69A-69F, 71, 77A-77E ... holding piece, 66A, 66B ... vertical partition Piece 73 ... partition wall.

Claims (3)

An image processing unit capable of forming an image on a medium or reading an image from the medium;
A control unit for controlling the image processing unit;
A frame that supports the image processing unit and the control unit;
One or more signal lines for transmitting signals between the image processing unit and the control unit;
One or more power lines for supplying power to a power source for operating the image processing unit;
A first holder member and a second holder member for holding the one or more signal lines and the one or more power lines.
The frame has a portion made of a sheet metal member, and the image processing unit is arranged on one side of the both sides sandwiching the portion made of the sheet metal member, and the control unit is arranged on the other side. And
One or both of the first holder member and the second holder member are provided with an interval forming portion, and the interval forming portion is interposed between the first holder member and the second holder member. In a state where the first holder member and the second holder member are overlapped with each other, a gap is formed between the first holder member and the second holder member, and The first holder member is positioned with respect to the frame by contacting the first holder member with a part of the frame, and the locking claw of the first holder member is placed at the locking position on the sheet metal member side. The second holder member is attached to the upper end of the portion formed by the sheet metal member by being locked, and the second holder member is positioned with respect to the first holder member by being brought into contact with the first holder member. The upper end of the portion formed by the sheet metal member together with the first holder member by locking the locking claw of the second holder member to the locking portion on the first holder member side. Attached to the
The signal line of one system or two systems and the power line of one system or two systems are one set including at least one signal line and the other set including at least one power line. The one set is held by the first holder member and the other set is held by the second holder member without contacting the upper end of the sheet metal member. It is wired between the one side and the other side over the upper side of the part constituted by the sheet metal member,
Moreover, the signal lines, wherein included in one set, and of the power lines included in the other set, with either one is wired to the gap and the other across the front Stories second holder member By wiring at a position opposite to the gap, the signal line included in the one set and the power line included in the other set are prevented from approaching to a predetermined distance or less. An image processing apparatus characterized by that. The one set includes the signal line and the power line,
The first holder member is provided with a protruding object that defines a plurality of regions each serving as a wiring path,
The signal line and the power line included in the one set are wired in different regions defined by the projecting object, so that the signal line and the power line included in the one set are predetermined. The image processing apparatus according to claim 1, wherein the image processing apparatus is prevented from approaching to a distance or less. The second holder member includes a first portion disposed on the upper side of the first holder member and a second portion disposed on a side of the first holder member, and the first portion The portion that continues from the second portion to the second portion has a shape bent from the upper side of the first holder member to the side of the first holder member,
Said first holder member, the image processing according to claim 1 or claim 2, characterized in that the inner portion adapted to the bent shape the second holder member has has become in contact with the form apparatus.

Images