JP5821577B2 - Image processing apparatus and image reading apparatus - Google Patents

Description

  The present invention relates to an image processing apparatus and an image reading apparatus having an electric wire pinching prevention structure.

  For example, in an image processing apparatus such as an image scanner, there is one in which one member is configured by superimposing a first member and a second member.

  In such a configuration, when an electric wire is installed between the first member and the second member, the second member must be assembled to the first member while paying attention to the electric wire. That is, in the state where the second member is separated from the first member, the electric wire is installed between the first member and the second member in a substantially extended state. And as the 2nd member approaches the 1st member, since an electric wire loosens, if it concentrates on the assembly of the 2nd member to the 1st member, the loosened electric wire will be the 1st member and the 2nd member. There is a risk of being caught between them. Therefore, it is necessary to overlap the second member on the first member while taking care not to sandwich the slackened electric wire between the first member and the second member.

JP 2009-216828 A

  However, when attention is paid to the electric wire, the workability of assembling the second member to the first member is lowered.

  The object of the present invention is to prevent the electric wire from being pinched with a simple configuration and capable of preventing the electric wire straddling between the first member and the second member from being pinched between the first member and the second member. An image processing apparatus and an image reading apparatus having a structure are provided.

  In order to achieve the above object, an image processing apparatus according to the present invention includes a first member and a second member that is displaced into a closed state that overlaps the first member and an open state that opens the inside of the first member. When the housing and the second member are stacked on the first member, the electric wire provided across the first member and the second member is the first member and the second member. And a prevention structure for preventing being sandwiched between the two. The prevention structure includes a region on the first member side including the swing axis, and a center of a swing axis extending in the first member in parallel with one end edge of the first member. A pinching prevention piece is provided so as to be swingable between a swinging axial line and a region extending toward the second member in the open state. And the said electric wire is positioned with respect to the said pinching prevention piece.

  The pinching prevention piece is provided so as to be swingable about a swing axis extending in the first member in parallel with the one end edge of the first member. In the open state in which the second member opens the first member, the pinching prevention piece is disposed in a region extending from the swing axis toward the second member. When the second member is displaced from the open state to the closed state overlapping the first member, the pinching prevention piece rotates around the swing axis and is disposed in a region on the first member side including the swing axis. Is done.

  The electric wire straddling between the first member and the second member is positioned with respect to the pinching prevention piece. Therefore, when the second member is overlapped with the first member, a part of the electric wire is sandwiched between the pinching prevention piece and the first member without the position of the electric wire being shifted with respect to the pinching prevention piece. Therefore, it is possible to prevent the electric wire from being pinched between the first member and the second member with a simple configuration in which the pinching prevention piece is provided.

  The prevention structure preferably includes a positioning piece for positioning the electric wire with respect to the first member.

  Since the electric wire is positioned with respect to the first member, the position of the electric wire can be prevented from shifting between the pinching prevention piece and the first member. As a result, it is possible to further prevent the electric wire from being sandwiched between the first member and the second member.

  The pinching prevention piece and the positioning piece are preferably one piece and the other piece formed by folding one sheet-like member having flexibility into two.

  With a simple configuration using one sheet-like member, the pinching prevention piece and the positioning piece can be formed.

  It is preferable that the sheet-like member has a perforation formed at the boundary between the one piece and the other piece.

  If the perforation is formed, the sheet-like member can be easily bent at the boundary between the one piece and the other piece. Therefore, the pinching prevention piece and the positioning piece can be easily formed from one sheet-like member.

  A first hole and a second hole may be formed in the positioning piece and the pinching prevention piece, respectively. In this case, the electric wire may extend between the first member and the second member as follows. The electric wire is inserted into the first hole from between the first member and the positioning piece, and is drawn out between the positioning piece and the pinching prevention piece. And an electric wire is penetrated by the 2nd hole, and is pulled out between a pinching prevention piece and the 2nd member.

  The electric wire is positioned with respect to the positioning piece by being inserted into the first hole of the positioning piece. Further, the electric wire is positioned with respect to the pinching prevention piece by being inserted into the second hole of the pinching prevention piece. Therefore, the electric wire can be positioned with respect to the positioning piece and the pinching prevention piece with a simple configuration.

  The positioning piece may include a pair of first cuts extending in a direction parallel to the swing axis and a second cut connecting the pair of first cuts. And the part isolate | separated from the circumference | surroundings by the 1st notch | incision and the 2nd notch | incision may be bent by the fold line extended between a pair of 1st notch | incisions, and the electric wire holding part which wraps and hold | maintains an electric wire may be formed. .

  By holding the electric wire in the electric wire holding part, the electric wire is positioned with respect to the first member.

  When the electric wire includes the first electric wire and the second electric wire supplied with a voltage lower than the voltage supplied to the first electric wire, the first electric wire is preferably held by the electric wire holding portion.

  Thereby, the 1st electric wire to which a voltage higher than a 2nd electric wire is supplied can be positioned reliably with respect to a positioning piece. And since the 1st electric wire is prevented from approaching the 2nd electric wire, when the 2nd electric wire is a signal wire, it prevents that the noise from the 1st electric wire has a bad influence on the signal which flows through the 2nd electric wire. it can.

  Moreover, when a some electric wire is provided, while an electric wire is hold | maintained at an electric wire holding part, another electric wire is good to pass through the opening produced by forming an electric wire holding part.

  Thereby, a some electric wire can be positioned with respect to a positioning piece.

  The positioning piece is preferably positioned with respect to the first member.

  With a simple configuration in which the positioning piece is positioned with respect to the first member, the electric wire can be positioned with respect to the first member.

  An image reading apparatus according to the present invention controls the image reading unit, the image reading unit provided in the first member, and reads an image formed on a sheet, and is provided in the first member. A main board that is provided on the second member and is manually operated, and a sub board that is provided on the second member and is communicably connected to the main board and receives a signal from the switch. And a sensor provided on the first member, and an electric wire connecting the sub-board and the sensor.

  Therefore, this image reading apparatus can achieve the same effects as the effects described with respect to the above-described image processing apparatus.

  The image reading apparatus may further include a tray on which the sheet on which an image to be read by the image reading unit is formed is placed. In this case, the sensor may be a sheet placement sensor that detects that a sheet is placed on the tray.

  For example, when a sheet is placed on the tray in a sleep state where the main board is at rest, a signal from the sheet placement sensor is input to the sub-board through an electric wire. By activating the main board in response to the input of this signal, the signal input from the switch to the main board can be validated.

  According to the present invention, it is possible to prevent an electric wire straddling between the first member and the second member from being sandwiched between the first member and the second member with a simple configuration.

FIG. 1 is an external perspective view of an image scanner 1 according to an embodiment of the present invention, and shows a state when the image scanner 1 is not used. FIG. 2 is an external perspective view of the image scanner 1 and shows a state when the image scanner 1 is used. FIG. 3 is a sectional view of the image scanner 1. FIG. 4 is an exploded perspective view of the upper unit 5 of the image scanner 1. FIG. 5 is a perspective view of the image scanner 1 and shows a state in which the outer member of the upper unit 5 is opened. FIG. 6 is a perspective view of the upper unit 5 and shows a state in which the outer member 72 of the image scanner 1 is opened. FIG. 7 is a perspective view of a sheet-like member 73 provided in the image scanner 1.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<Appearance structure of image scanner>

  As shown in FIG. 1, an image scanner 1 as an example of an image reading apparatus includes a scanner body 2, a supply tray 3, and a discharge tray 4.

  The scanner body 2 includes an upper unit 5 and a lower unit 6. A sheet discharge port 7 is formed across the upper unit 5 and the lower unit 6 on the front surface of the scanner body 2.

  Note that the front and rear, the left and right, and the top and bottom are defined when the image scanner 1 is viewed from the front side with the image scanner 1 placed on a plane. In each drawing after FIG. 1, in order to facilitate understanding of the drawing, the prescribed direction is indicated by an arrow as necessary.

  The upper unit 5 is coupled to the lower unit 6 so as to be swingable about an axis extending in the left-right direction along the front upper edge of the lower unit 6. Then, the upper unit 5 can be displaced by swinging into a normal posture inclined downward, that is, a posture shown in FIG. 2, and a maintenance posture (not shown) in which the rear end portion is lifted upward from the normal posture. is there. In a state in which the upper unit 5 is in the maintenance posture, the space between the upper unit 5 and the lower unit 6 is opened, and sheet jam processing and maintenance can be performed.

  As shown in FIG. 2, an operation display unit 8 is provided on the upper surface of the upper unit 5. The operation display unit 8 includes an operation button 9 as an example of a plurality of switches, a pilot lamp 10, and the like.

  The lower unit 6 includes side panels 11 each having a trapezoidal shape in side view at the left end and the right end. The pair of side panels 11 form the left and right side surfaces of the image scanner 1. In a state where the upper unit 5 is in the normal posture, the pair of side panels 11 sandwich the upper unit 5 from the left and right, and the left and right side surfaces of the upper unit 5 are covered. In this state, the upper surface of the upper unit 5 is disposed in substantially the same plane as the upper edge of each side panel 11.

  The supply tray 3 as an example of the tray is supported by the lower unit 6 so as to be swingable about an axis extending in the left-right direction along the rear upper end edge of the lower unit 6. The supply tray 3 is swung to oppose the upper surface of the scanner main body 2 from above, that is, the posture shown in FIG. 1, and the usage posture extending rearward and upward from the rear upper end of the scanner main body 2, ie, FIG. It can be displaced to the posture shown. The supply tray 3 is formed in a plate shape that is substantially the same shape as the planar shape of the scanner body 2. Therefore, the upper surface of the scanner main body 2 is covered with the supply tray 3 while the supply tray 3 is in the storage posture.

  In a state where the supply tray 3 is in the use posture, the substantially rectangular sheet supply port 12 extending in the left-right direction is opened rearward and upward.

  A pair of left and right rib-shaped sheet width guide members 13 are formed in a state where the supply tray 3 is in a use posture. The pair of sheet width guide members 13 is provided so as to be able to approach / separate with the same movement amount with the center between them as a center reference.

The discharge tray 4 is formed in a substantially rectangular plate shape. The discharge tray 4 is stored in the lowermost part of the scanner main body 2, that is, the state shown in FIG. 1, and the state where the discharge tray 4 is pulled out from the sheet discharge port 7 to the front of the scanner main body 2, that is, the state shown in FIG. It is provided to be displaceable.
<Internal configuration of image scanner>

  The upper unit 5 and the lower unit 6 include an upper frame 31 and a lower frame 32, respectively, as shown in FIG. The sheet supply port 12 is formed by the rear edge of the upper frame 31 and the rear edge of the lower frame 32.

  A supply roller 33 is disposed on the back side of the sheet supply port 12. The supply roller 33 is provided by the lower frame 32 so as to be rotatable about an axis extending in the left-right direction. The supply roller 33 rotates counterclockwise when viewed from the right side during sheet conveyance.

  A regulating member 34, a sheet pressing member 35, and a separation piece unit 36 are provided on the front upper side of the supply roller 33. The regulating member 34, the sheet pressing member 35, and the separation piece unit 36 are attached to the upper frame 31.

  The regulating member 34 is formed in a substantially triangular shape in a side view that is pointed toward the supply roller 33.

  The sheet pressing member 35 is made of a leaf spring. The base end portion of the sheet pressing member 35 is attached to the rear end portion of the upper frame 31, and the free end portion is in contact with the peripheral surface of the supply roller 33 from the front upper side.

  The separation piece unit 36 includes a separation piece 37 made of rubber. The separation piece 37 is disposed on the downstream side in the rotation direction of the supply roller 33 with respect to the regulating member 34. The surface of the separation piece 37 is in elastic contact with the peripheral surface of the supply roller 33.

  LF rollers 38 and 39 are provided downstream of the supply roller 33 in the sheet conveyance direction so as to be rotatable about an axis extending in the left-right direction.

  An upper CIS unit 41 and a lower CIS unit 42 as an example of an image reading unit are provided downstream of the LF rollers 38 and 39 in the sheet conveyance direction. The upper CIS unit 41 and the lower CIS unit 42 are held by the upper unit 5 and the lower unit 6, respectively.

On the downstream side of the upper CIS unit 41 and the lower CIS unit 42, discharge rollers 43 and 44 are provided to be rotatable about an axis extending in the left-right direction.
<Reading images with an image scanner>

  The image scanner 1 can selectively read images formed on one side and the other side of the sheet. Further, the image scanner 1 can read images formed on both sides of the sheet in parallel. Hereinafter, sheet conveyance and image reading will be described in time series.

  The distance between the pair of sheet width guide members 13 is adjusted to the width of the sheet to be read. Thereafter, the front end portion of the sheet to be read is inserted between the pair of sheet width guide members 13 from the rear upper side. The rear end portion of the sheet is placed on the supply tray 3.

  The sheet slides forward and downward due to its own weight, and the leading end of the sheet is guided onto the peripheral surface of the supply roller 33. Then, when the leading end of the lowermost sheet contacts the separation piece unit 36, the lowermost sheet stops due to frictional resistance with the separation piece unit 36. Further, the upper sheet is stopped when the leading edge thereof abuts against the sheet pressing member 35. This completes the sheet setting.

  Further, the free end portion of the sheet pressing member 35 is lifted by the entry of the sheet, and the sheet pressing member 35 comes into contact with the upper surface of the sheet. The lowermost sheet is pressed against the peripheral surface of the supply roller 33 by the urging force of the sheet pressing member 35.

  When the supply roller 33 rotates counterclockwise as viewed from the right side, the lowermost sheet moves together with the peripheral surface of the supply roller 33 due to the frictional force between the lowermost sheet and the peripheral surface of the supply roller 33. Further, due to the frictional force between the lowermost sheet and the sheet immediately above the uppermost sheet, the uppermost sheet is dragged and moved. When the leading ends of these sheets come into contact with the surface of the separation piece 37, the movement of the upper sheet is restricted by the separation piece 37, and only the lowermost sheet is the peripheral surface of the separation piece 37 and the supply roller 33. And pass through the nip part.

  When the leading edge of the sheet comes into contact with the nip portion of the LF rollers 38 and 39, the leading edge of the sheet is drawn into the nip portion by the rotation of the LF rollers 38 and 39. Then, the sheet is further conveyed downstream in the conveyance direction by the rotation of the LF rollers 38 and 39.

  As the conveyance of the sheet proceeds, the upper and lower surfaces of the sheet face the upper CIS unit 41 and the lower CIS unit 42, respectively. Then, light is irradiated from the upper CIS unit 41 and the lower CIS unit 42 to the upper surface and the lower surface of the sheet, respectively. Reflected light on the upper and lower surfaces of the sheet is received by the image sensors incorporated in the upper CIS unit 41 and the lower CIS unit 42, respectively, thereby achieving reading of images formed on the upper and lower surfaces of the sheet.

Thereafter, when the leading edge of the sheet comes into contact with the nip portion of the discharge rollers 43 and 44, the leading edge of the sheet is drawn into the nip portion by the rotation of the discharge rollers 43 and 44. Then, the sheet is conveyed downstream in the conveyance direction by the rotation of the discharge rollers 43 and 44. When the trailing edge of the sheet is separated from the discharge rollers 43 and 44, the sheet is discharged onto the discharge tray 4.
<Configuration of upper unit>

As shown in FIG. 4, the upper unit 5 as an example of a housing can separate an inner member 71 as an example of a first member, an outer member 72 as an example of a second member, and a sheet-like member 73 from each other. I have.
<Configuration of inner member>

  The inner member 71 is formed in a rectangular shape whose outer shape is long in the left-right direction. The inner member 71 is integrally provided with an upper frame 31 and a pair of side plates 74 that sandwich the upper frame 31 from both left and right sides. As shown in FIG. 5, the lower end portion of the inner member 71 is coupled to the lower unit 6 so as to be swingable about an axis extending in the left-right direction along the front upper end edge of the lower unit 6. Thereby, the upper unit 5 is provided to be displaceable between a normal posture and a maintenance posture.

Further, as shown in FIG. 6, a plurality of locked portions 77 are provided at the upper edge of the inner member 71 at intervals in the left-right direction. Each locked portion 77 is formed in a substantially triangular cross section that tapers back and upward.
<Configuration of outer member>

  The outer member 72 is integrally provided with a rectangular facing portion 78 that faces the inner member 71 and a peripheral edge 79 that extends from the periphery of the opposing portion 78 toward the outer member. The operation display unit 8 illustrated in FIG. 2 is provided in the facing unit 78.

  As shown in FIG. 4, a plurality of locking portions 80 are provided at the rear lower end portion of the peripheral edge portion 79 at intervals in the left-right direction.

  A flat plate-like locking portion 81 is provided at the upper end portion of the peripheral edge portion 79 at intervals in the left-right direction corresponding to each locked portion 77 of the inner member 71.

Each locking portion 81 is locked to the locked portion 77, and each locking portion 80 is locked to the lower edge of the inner member 71, whereby the closed state of the outer member 72 is maintained. And each latching | locking part 80 is removed from the lower end edge of the inner side member 71, and when each latching | locking part 81 is removed from the to-be-latched part 77, the closed state of the outer side member 72 is cancelled | released.
<Configuration of sheet-like member>

  As shown in FIG. 7, the sheet-like member 73 is made of a substantially rectangular film sheet having flexibility. In the sheet-like member 73, a perforation 91 extending in the longitudinal direction (direction along the long side) is formed at a position slightly offset from the center of the direction orthogonal to the longitudinal direction (direction along the short side). ing. The sheet-like member 73 is folded in two at the perforation 91, thereby having a pinching prevention piece 92 and a positioning piece 93 on one side and the other side of the perforation 91, respectively.

  The pinching prevention piece 92 is provided with an annular notch that is partially discontinuous. Specifically, a pair of first cuts 94 and 95 and a second cut 96 are formed in the pinching prevention piece 92. The pair of first cuts 94 and 95 extend linearly in the longitudinal direction with a space in the direction orthogonal to the longitudinal direction. The second cut 96 connects one end of each of the first cuts 94 and 95. The second notch 96 is bent in a convex manner in the middle.

  Further, the pinching prevention piece 92 corresponds to the convex shape of the middle part of the second cut 96 on the opposite side of the second cut 96 with respect to the fold line 97 connecting the other ends of the first cuts 94, 95. An insertion slit 98 that is parallel to the fold line 97 is formed.

  Further, the pinching prevention piece 92 is formed with three wire insertion holes 99A, 99B, 99C spaced apart from each other.

  In the positioning piece 93, three wire insertion holes 101A, 101B, 101C, four protrusion insertion holes 102A, 102B, 102C, 102D, and two dual-purpose holes 103A, 103B are spaced from each other. Is formed.

The peripheral edge 104 of the positioning piece 93 is bent toward the pinching prevention piece 92. By this bending, the positioning piece 93 is squeezed.
<Structure to prevent pinching of wires>

  On the surface of the inner member 71 facing the outer member 72, for example, a sheet placement sensor 111 for detecting that a sheet is placed on the supply tray 3, and a sheet passage for detecting the passage of the sheet. A sensor 112 and a double feed sensor 201 for detecting double feed of sheets are provided. One end of electric wires 113 and 114 as examples of the second electric wires are connected to the sheet placement sensor 111 and the sheet passage sensor 112, respectively. For example, a voltage of 3 V is supplied to the electric wires 113 and 114. An electric wire 115 as an example of the first electric wire is connected to an ultrasonic multifeed sensor 201. The electric wire 115 is supplied with a voltage higher than the voltage supplied to the electric wires 113 and 114, for example, 24V.

  On the other hand, a sub-board 121 is provided on the surface of the outer member 72 facing the inner member 71. The sub-board 121 is disposed on the back side of the operation display unit 8. The operation button 9 of the operation display unit 8 and the pilot lamp 10 (see FIG. 2) are electrically connected to the sub board 121. When the operation button 9 is operated, a switch signal is input from the operation button 9 to the sub board 121. Further, a drive current is supplied from the sub-board 121 to the pilot lamp 10. Further, the sub board 121 is electrically connected to the main board 123 (see FIGS. 3 and 5) disposed on the bottom of the lower unit 6 via the harness 122.

  As shown in FIGS. 5 and 6, the sheet-like member 73 includes an inner member 71 and an outer member 72 such that a perforation 91 (fold line) extends above the lower edge of the inner member 71 and along the lower edge. It is arranged between. Projections 125 formed on the surface of the inner member 71 facing the outer member 72 are inserted into the protrusion insertion holes 102A, 102B, 102C, 102D and the dual-purpose holes 103A, 103B of the positioning piece 93. Thereby, the positioning piece 93 is positioned with respect to the inner member 71. The pinching prevention piece 92 has a perforation 91 as a swing axis, and is located between a position facing the positioning piece 93 in a region on the inner member 71 side and a region extending from the perforation 91 to the outer member 72 side in the open state. Can swing.

  The electric wire 113 extending from the sheet placement sensor 111 is passed through the electric wire insertion hole 101 </ b> A as an example of the first hole of the positioning piece 93 and is drawn between the pinching prevention piece 92 and the positioning piece 93. And the electric wire 113 is pulled out to the outer side member 72 side through the electric wire penetration hole 99A as an example of the 2nd hole of the pinching prevention piece 92. FIG. Further, the electric wire 113 is passed through another electric wire insertion hole 99B of the pinching prevention piece 92, drawn between the pinching prevention piece 92 and the positioning piece 93, and passed through the edge of the pinching prevention piece 92 to It is connected to the substrate 121.

  The electric wire 114 extending from the sheet passing sensor 112 is passed through the electric wire insertion hole 101 </ b> B as an example of the first hole of the positioning piece 93 and drawn out between the pinching prevention piece 92 and the positioning piece 93. Then, the electric wire 114 is pulled out to the inner member 71 side through the dual-purpose hole 103A of the positioning piece 93. Furthermore, the electric wire 114 is passed through the electric wire insertion hole 101 </ b> C of the positioning piece 93 and drawn out again between the pinching prevention piece 92 and the positioning piece 93. The bent piece 131 surrounded by the first cuts 94 and 95 and the second cut 96 is bent along the bending line 97 to the positioning piece 93 side. The electric wire 114 passes through the opening 132 formed by bending the bent piece 131, is drawn between the pinching prevention piece 92 and the outer member 72, and is connected to the sub-board 121.

  The electric wire 115 connected to the double feed sensor is passed through the dual-purpose hole 103 </ b> B as an example of the first hole of the positioning piece 93, and is drawn between the pinching prevention piece 92 and the positioning piece 93. The electric wire 113 is held by the protrusion 125 protruding from the protrusion insertion hole 102A of the positioning piece 93 and extends to the right side of the opening 132 of the pinching prevention piece 92. On the right side of the opening 132, the bent piece 131 is bent so as to enclose the electric wire 115, and the protruding piece 133 corresponding to the convex shape in the middle of the second cut 96 is inserted into the insertion slit 98, whereby the electric wire 115. An electric wire holding portion 134 is formed to hold the wire between the wire holding portion 134 and the pinching prevention piece 92. The electric wire 115 passes through the electric wire insertion hole 99C as an example of the second hole of the pinching prevention piece 92, is drawn to the outer member 72 side, and is connected to the sub-board 121.

  When the upper unit 5 is assembled, first, each locking portion 81 of the outer member 72 is locked to the locked portion 77 of the inner member 71. Next, the sheet-like member 73 is disposed between the inner member 71 and the outer member 72 in the open state. Further, the electric wires 113 to 115 extending from the inner member 71 are passed through the electric wire insertion holes 99 </ b> A of the sheet-like member 73, and the electric wires 113 to 115 are connected to the sub-board 121. Thereafter, the outer member 72 is superimposed on the inner member 71. Then, each locking portion 80 of the outer member 72 is locked to the lower end edge of the inner member 71. Thereby, the assembly of the upper unit 5 is completed.

After the assembly of the upper unit 5, each locking portion 80 of the outer member 72 is removed from the lower end edge of the inner member 71, and each locking portion 81 of the outer member 72 is removed from the locked portion 77 of the inner member 71. As a result, the outer member 72 is separated from the inner member 71.
<Effect>

  The pinching prevention piece 92 is provided so as to be swingable around a perforation 91 extending in the inner member 71 in parallel with the lower end edge of the outer member 72. In the open state in which the outer member 72 opens the inside of the inner member 71, the pinching prevention piece 92 is disposed in a region extending from the perforation 91 to the outer member 72 side. When the outer member 72 is displaced from the open state to the closed state overlapping the inner member 71, the pinching prevention piece 92 rotates around the perforation 91, and enters the region on the inner member 71 side including the perforation 91. Be placed.

  The electric wire 113 straddling between the inner member 71 and the outer member 72 is positioned with respect to the positioning piece 93 by passing through the electric wire insertion hole 101 </ b> A of the positioning piece 93. Further, the electric wire 113 is positioned with respect to the pinching prevention piece 92 by passing through the electric wire insertion hole 99A of the pinching prevention piece 92. Thus, the electric wire 113 is positioned with respect to the positioning piece 93 and the pinching prevention piece 92 with a simple configuration. The same applies to the electric wires 114 and 115.

  Since the electric wires 113 to 115 are positioned with respect to the pinching prevention piece 92, the positions of the electric wires 113 to 115 do not shift with respect to the pinching prevention piece 92 when the outer member 72 is superimposed on the inner member 71. Part of 113 to 115 is sandwiched between the sandwiching prevention piece 92 and the inner member 71. Therefore, it is possible to prevent the electric wire from being pinched between the inner member 71 and the outer member 72 with a simple configuration in which the pinching prevention piece 92 is provided.

  Further, the electric wires 113 to 115 are positioned with respect to the positioning piece 93, and the positioning piece 93 is positioned with respect to the inner member 71, whereby the electric wires 113 to 115 are positioned with respect to the inner member 71.

  Since the electric wires 113 to 115 are positioned with respect to the inner member 71, the positions of the electric wires 113 to 115 can be prevented from being shifted between the pinching prevention piece 92 and the inner member 71. As a result, it is possible to further prevent the electric wires 113 to 115 from being sandwiched between the inner member 71 and the outer member 72.

  In addition, the electric wire 115 to which a voltage higher than that of the electric wires 113 and 114 is supplied is held by an electric wire holding portion 134 formed by bending the bent piece 131 so as to wrap the electric wire 115.

  Thereby, the electric wire 115 is reliably positioned between the pinching prevention piece 92 and the positioning piece 93. And since it is prevented that the electric wire 115 approaches the electric wires 113 and 114, it can prevent the noise from the electric wire 115 having a bad influence on the sensor signal which flows through the electric wires 113 and 114.

  The pinching prevention piece 92 and the positioning piece 93 are formed by folding a single sheet-like member 73 having flexibility.

  The sandwiching prevention piece 92 and the positioning piece 93 can be formed with a simple configuration using one sheet-like member 73.

  Since the perforation 91 is formed at the boundary between the pinching prevention piece 92 and the positioning piece 93, the sheet-like member 73 can be easily bent, and the pinch-preventing piece 92 and the positioning are formed from one sheet-like member 73. The piece 93 can be easily formed.

  Further, the image scanner 1 includes a sheet placement sensor 111, a sub board 121, and a main board 123. The sheet placement sensor 111 is electrically connected to the sub-board 121 via the electric wire 113. The sub board 121 is electrically connected to the main board 123 via the harness 122.

For example, when a sheet is placed on the supply tray 3 while the main board 123 is at rest (sleep state), a signal from the sheet placement sensor 111 is input to the sub board 121 through the electric wire 113. By activating the main board 123 in response to the input of this signal, the input of the signal from the operation button 9 to the main board 123 can be validated.
<Modification>

  As mentioned above, although one Embodiment of this invention was described, this invention can also be implemented with another form.

  In the above-described embodiment, the image scanner 1 is taken up as an example of an image processing apparatus and an image reading apparatus. Is possible. For example, the pinching prevention structure according to the present invention can be applied to prevent the electric wire from being pinched between the automatic document feeder and the image forming apparatus main body in an image processing apparatus such as a copying machine or a multifunction peripheral.

  In addition, various design changes can be made to the above-described configuration within the scope of the matters described in the claims.

DESCRIPTION OF SYMBOLS 1 Image scanner 5 Upper unit 3 Supply tray 9 Operation button 41 Upper CIS unit 42 Lower CIS unit 71 Inner member 72 Outer member 73 Sheet-like member 91 Perforation 92 Pinching prevention piece 93 Positioning piece 94 First cut 95 First cut 96 First cut 2 notches 97 bending line 99A electric wire insertion hole 99C electric wire insertion hole 101A electric wire insertion hole 101B electric wire insertion hole 103B dual purpose hole 111 sheet placement sensor 112 sheet passage sensor 113 electric wire 114 electric wire 115 electric wire 121 sub-board 123 main board 134 electric wire holding part 132 Opening

Claims (11)

A housing comprising a first member, and a second member that is displaced into a closed state that overlaps the first member and an open state that opens the first member;
When the second member is overlapped with the first member, an electric wire provided between the first member and the second member is sandwiched between the first member and the second member. And a prevention structure for preventing
The prevention structure is configured to open from the swing axis and the region on the first member side including the swing axis about the swing axis extending in the first member in parallel with one end edge of the first member. A pinching prevention piece provided so as to be swingable between the region extending toward the second member in the state,
An image processing apparatus, wherein the electric wire is positioned with respect to the pinching prevention piece.   The image processing apparatus according to claim 1, wherein the prevention structure includes a positioning piece for positioning the electric wire with respect to the first member.   The image processing apparatus according to claim 2, wherein the pinching prevention piece and the positioning piece are one piece and the other piece formed by folding one flexible sheet-like member in half.   The image processing apparatus according to claim 3, wherein the sheet-like member has a perforation formed at a boundary between the one piece and the other piece. A first hole is formed in the positioning piece,
A second hole is formed in the pinching prevention piece,
The electric wire is inserted into the first hole from between the first member and the positioning piece, passed between the positioning piece and the pinching prevention piece, and inserted into the second hole to prevent pinching. The image processing apparatus according to claim 2, wherein the image processing apparatus extends between a piece and the second member. A pair of first cuts extending in a direction parallel to the swing axis and a second cut connecting the pair of first cuts are made in the pinching prevention piece , and the surroundings are formed by the first cut and the second cut. 6. The wire separation unit according to claim 2, further comprising: an electric wire holding portion that wraps and holds the electric wire, wherein the portion separated from the electric wire is bent by a fold line extending between the pair of first cuts. The image processing apparatus described. The electric wire includes a first electric wire and a second electric wire supplied with a voltage lower than the voltage supplied to the first electric wire,
The image processing apparatus according to claim 6, wherein the electric wire holding unit holds the first electric wire. A plurality of the electric wires are provided,
The electric wire is positioned with respect to the positioning piece by passing the electric wire different from the electric wire held by the electric wire holding portion through an opening generated by forming the electric wire holding portion. An image processing apparatus according to 1.   The image processing apparatus according to claim 2, wherein the positioning piece is positioned with respect to the first member. An image processing apparatus according to claim 1 , comprising an upper unit and a lower unit, wherein the upper unit includes the housing .
An image reading unit provided on the first member for reading an image formed on the sheet;
A main board provided in the lower unit for controlling the image reading unit;
A switch provided on the second member and manually operated;
A sub-board provided on the second member, connected to be communicable with the main board, and receiving a signal from the switch;
A sensor provided on the first member;
An image reading apparatus including an electric wire connecting the sub-board and the sensor. A tray on which the sheet on which an image to be read by the image reading unit is formed is placed;
The image reading apparatus according to claim 10, wherein the sensor is a sheet placement sensor that detects that the sheet is placed on the tray.

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