JP2019068174A - Compound machine - Google Patents

Abstract

To effectively dissipate heat from an electronic component.SOLUTION: A compound machine 1 includes a scanner housing 5 having an internal space S and a printer housing 11 for housing a substrate 9a on which an ASIC 9b is mounted. The scanner housing 5 is supported by the printer housing 11 so as to be movable between a proximity position close to the printer housing 11 and a separation position. A through hole 11c is formed at a position facing the substrate 9a in a ceiling portion 11d of the printer housing 11. A through hole 5b1 is formed at a position overlapping the substrate 9a in the vertical direction A at the proximity position in a bottom plate 5b of the scanner housing 5.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a multifunction peripheral including a reading unit that reads an image and a recording unit for recording an image on a recording medium.

  Patent Document 1 describes a multifunctional multifunction machine including a shield box in which a power supply substrate on which electronic components constituting the power supply unit are mounted is vertically erected. A part of the shield box in this multifunctional multifunction machine is exposed from the cutout portion of the exterior cover of the multifunctional multifunction machine, and the exposed portion, which is a position facing the power supply substrate, is used to dissipate heat from the electronic components. A heat exhaust for the purpose is provided. Thereby, the heat from the electronic component can be released to the outside of the apparatus through the heat exhaust port.

Unexamined-Japanese-Patent No. 2004-117508

  However, the heat exhaust port formed in the shield box of the multifunctional multifunction machine described in Patent Document 1 is formed on the side surface (vertical plane) of the shield box. The heat from the electronic components mounted on the power supply substrate tends to move upward, so the heat from the electronic components is less likely to be released from the heat exhaust port to the outside of the apparatus. For this reason, the heat from the said electronic component will be in the state which was the upper part of a shield box, and was settled in the space between a power supply board and a heat exhaust port, and the problem that it becomes difficult to radiate the heat of electronic component arises.

  An object of the present invention is to provide a multifunction device capable of effectively releasing heat of electronic components.

  The multi-functional peripheral according to the present invention has an upper case having an internal space in which a reading unit for reading an image can reciprocate, a substrate on which an electronic component that generates heat when energized is mounted, and a recording medium And a lower housing for containing a recording unit for recording, wherein the upper housing is in close proximity to the lower housing and in a separated position separated from the lower housing from the proximity position. In the multi-functional peripheral in which the upper housing is supported by the lower housing movably between the upper housing and the lower housing, the lower housing covers the substrate above the substrate, and the inner space of the upper housing at the proximity position. A lower through-hole is formed at a position facing the substrate in the ceiling, and a lower through-hole is formed in the ceiling; Position that overlaps with the substrate vertically in position Upper through hole is formed.

  According to this, when the upper housing is disposed at the close position, the space between the substrate and the ceiling portion of the lower housing and the internal space of the upper housing are vertically moved by the lower through hole and the upper through hole. It can communicate with the Therefore, even if the electronic component generates heat, the heat is easily moved from the space between the substrate and the ceiling to the internal space, and the heat is stagnant in the space between the substrate and the ceiling of the lower housing. It becomes difficult. As a result, it is possible to effectively dissipate the heat of the electronic component.

  In the present invention, it is preferable that the upper through hole and the lower through hole overlap at the proximity position along the vertical direction. As a result, when the upper housing is disposed in the close position, heat is more easily transferred from the space between the substrate of the lower housing and the ceiling portion to the internal space of the upper housing, and Heat is less likely to build up in the space between the substrate of the body and the ceiling. For this reason, it is possible to more effectively dissipate the heat of the electronic component.

  Further, in the present invention, it is preferable that the lower through hole is disposed at a position facing the electronic component. As a result, the heat generated in the electronic component is easily transferred to the internal space, and the heat is less likely to stagnate in the space between the substrate of the lower housing and the ceiling portion. For this reason, it is possible to more effectively dissipate the heat of the electronic component.

  Further, in the present invention, a lower lid movable between a lower closed position closing the lower through hole and a lower open position opening the lower through hole, and the upper case being in the close position And a lower lid moving mechanism for moving the lower lid to the lower open position and moving the lower lid to the lower closed position when the upper housing is in the separated position. Is preferred. Thus, when the upper housing is in the separated position, the lower through hole can be closed by the lower lid, and foreign matter such as dust intrudes into the space between the substrate and the ceiling through the lower through hole. It becomes difficult to do.

  In the present invention, the upper lid is movable between an upper closed position closing the upper through hole and an upper open position opening the upper through hole, and the upper case is in the close position. It is preferable to further comprise an upper lid moving mechanism which moves the upper lid to the upper open position and moves the upper lid to the upper closed position when the upper housing is in the separated position. Accordingly, when the upper housing is in the separated position, the upper through hole can be closed by the upper lid, and foreign matter such as dust is less likely to intrude into the internal space through the upper through hole.

  Further, in the present invention, a lower lid movable between a lower closed position closing the lower through hole and a lower open position opening the lower through hole, the upper case being in the close position, and A sensor for detecting which of the separated positions is located, a lower lid moving mechanism for moving the lower lid between the lower closed position and the lower open position, and the upper housing is closer by the sensor When it is detected that the upper case is in the separated position by the sensor so as to move the lower cover to the lower open position when it is detected that it is in the position, the lower cover is moved Preferably, the apparatus further comprises a lower lid control device that controls the lower lid moving mechanism so as to move the lower closed position. Thus, when the upper housing is in the separated position, the lower through hole can be closed by the lower lid, and foreign matter such as dust intrudes into the space between the substrate and the ceiling through the lower through hole. It becomes difficult to do.

  In the present invention, an upper lid movable between an upper closed position for closing the upper through hole and an upper open position for opening the upper through hole, and the upper case at the close position and the separated position It is detected that the upper case is in the close position by the sensor which detects which one is, the upper lid moving mechanism which moves the upper lid between the upper closed position and the upper open position, and the sensor When moving the upper cover to the upper open position, the upper cover is moved to the upper closed position when the sensor detects that the upper case is in the separated position. It is preferable to further comprise an upper lid control device that controls the upper lid moving mechanism. Accordingly, when the upper housing is in the separated position, the upper through hole can be closed by the upper lid, and foreign matter such as dust is less likely to intrude into the internal space through the upper through hole.

  Further, in the present invention, the recording unit includes a liquid discharge head which discharges a liquid onto a recording medium to record an image, is provided to close the upper through hole, and is generated by the liquid discharge from the liquid discharge head. Preferably, the apparatus further comprises a filter capable of capturing liquid mist. Accordingly, it is possible to suppress the liquid mist from invading the internal space of the upper housing, and to suppress the liquid mist from adhering to the reading unit.

  According to the multifunction machine of the present invention, when the upper housing is arranged at the close position, the space between the substrate and the ceiling of the lower housing and the internal space of the upper housing are the lower through hole and the upper Communication can be made vertically through the through holes. Therefore, even if the electronic component generates heat, the heat is easily moved from the space between the substrate and the ceiling to the internal space, and the heat is stagnant in the space between the substrate and the ceiling of the lower housing. It becomes difficult. As a result, it is possible to effectively dissipate the heat of the electronic component.

FIG. 1 is a perspective view of a multifunction peripheral according to an embodiment of the present invention. It is a longitudinal cross-sectional view which shows typically the internal structure of the printer part shown in FIG. (A) is principal part sectional drawing which shows the condition where the scanner housing | casing was arrange | positioned in the proximity position with respect to the printer housing | casing, (b) is a scanner housing | casing disposed in the separation position with respect to the printer housing. It is an important section sectional view showing a situation. (A) is an explanatory view showing a situation where the lower lid is disposed at the lower open position and the upper lid is disposed at the upper open position, (b) is disposed at the lower closed position and the upper lid is at the upper position It is explanatory drawing which shows the condition arrange | positioned in the closed position. FIG. 6 is a side view of relevant parts showing a state in which the scanner housing is disposed at a separated position with respect to the printer housing. FIG. 10 is a side view showing a main part of a modified example of the lid moving mechanism of the multifunction peripheral according to the embodiment of the present invention, in which the scanner housing is disposed at a separated position with respect to the printer housing.

  Hereinafter, the multifunction peripheral 1 according to an embodiment of the present invention will be described. The multifunction device 1 is installed and used in the state shown in FIG. In the present embodiment, three directions shown with arrows in FIG. 1 are a vertical direction A, a longitudinal direction B, and a lateral direction C. The three directions shown in FIG. 1 are the same in the other drawings.

<Overall Configuration of MFP 1>
The multifunction machine 1 is formed in a substantially rectangular parallelepiped shape as shown in FIG. The multifunction device 1 has a scanner unit 2 at its upper portion for reading an image recorded on a document such as a sheet to obtain image data. In addition, the multifunction device 1 includes, at the lower portion thereof, a printer unit 10 that records an image on a sheet P (see FIG. 2) based on the above-described image data and the like.

[Printer unit 10]
The printer unit 10 is formed in a substantially rectangular parallelepiped shape, and has a printer housing (lower housing) 11 in which an opening 12 is formed in the front. The opening 12 is formed substantially at the center of the front surface 11 a of the printer housing 11. At the upper part of the front surface 11 a of the printer housing 11, an operation device 70 having a display unit and operation buttons and for operating the multifunction device 1 is provided.

  Inside the printer housing 11, as shown in FIG. 2, a sheet feeding tray 15, a pair of conveying rollers 35 and a pair of discharging rollers 36 for conveying the sheet P accommodated in the sheet feeding tray 15 along the conveying path 25; A recording unit 24 and a control unit 9 are provided. The sheet feeding tray 15 can be inserted and removed from the opening 12 in the front-rear direction B, and the sheet P is accommodated therein. The recording unit 24 records an image on a sheet P conveyed on the conveyance path 25 based on image data or the like read from a document by the scanner unit 2.

  As shown in FIG. 2, a feed roller 21 is provided above the feed tray 15 and below the recording unit 24. The feeding roller 21 is pivotally supported at the leading end of the feeding arm 22. The feed roller 21 is rotated by transmitting a driving force from a feed motor (not shown). The feed arm 22 pivots in the direction of the arrow D about a pivot 22a provided at the base end. Thus, the feed roller 21 can contact and separate from the sheet feed tray 15 or the sheet P supported by the sheet feed tray 15.

  The sheet P on which the image is recorded is discharged to a sheet discharge tray 16 provided on the upper side of the sheet feed tray 15 and placed on the sheet discharge tray 16. Here, the sheet discharge tray 16 is provided on the upper side of the sheet feed tray 15 so as to overlap with the sheet feed tray 15, and is inserted into the opening 12 integrally with the sheet feed tray 15. In the state where the sheet feeding tray 15 is inserted into the opening 12, the sheet discharge tray 16 constitutes the bottom of the opening 12. That is, the sheet P on which the image is recorded is discharged into the opening 12.

  As shown in FIG. 2, the conveyance path 25 is a passage extending from the lower side to the upper side with a U-turn while extending upward from the rear end portion of the sheet feeding tray 15 and extending forward to the sheet discharge tray 16. The transport path 25 is a space formed by the first guide member 25 a and the second guide member 25 b facing each other at a predetermined interval. The sheet P is transported in the transport direction E indicated by the double-dashed arrow in FIG.

[Conveying roller pair 35 and discharging roller pair 36]
As shown in FIG. 2, in the transport path 25, a transport roller pair 35 is provided upstream of the recording unit 24 in the transport direction E. The conveying roller pair 35 is configured by the conveying roller 35 a and the pinch roller 35 b. The pinch roller 35b is in pressure contact with the transport roller 35a by an elastic member (not shown) such as a spring. In the conveyance path 25, a discharge roller pair 36 is provided downstream of the recording unit 24 in the conveyance direction E. The discharge roller pair 36 is configured of a discharge roller 6a and a spur roller 36b. The spur roller 36 b is in pressure contact with the discharge roller 36 a by an elastic member (not shown) such as a spring.

  The conveyance roller 35a and the discharge roller 36a are rotated by the transmission of a driving force from a conveyance motor (not shown). The transport roller 35a and the discharge roller 36a to which the driving force is transmitted transport the sheet P in the transport direction E while sandwiching the sheet P between the pinch roller 35b and the spur roller 36b.

  The recording unit 24 is disposed above the transport path 25 as shown in FIG. A platen 26 is provided below the conveyance path 25 and at a position facing the recording unit 24. The platen 26 is a member for supporting the sheet P transported on the transport path 25 on the upper surface thereof. The recording unit 24 includes a recording head 27 provided to be able to face the conveyance path 25 and a carriage 28 that supports the recording head 27. On the lower surface of the recording head 27, a plurality of nozzles (not shown) for discharging the ink supplied from the ink cartridge (not shown) toward the transport path 25 are formed. The carriage 28 is configured to be reciprocally movable in the left-right direction C. While the carriage 28 reciprocates in the left-right direction C, ink droplets are ejected from the nozzles toward the sheet P conveyed along the conveyance path 25. Thus, the image is recorded on the sheet P.

  The control unit 9 controls the operation of the multifunction machine 10, and as shown in FIG. 3, is configured by various electronic components including an application specific integrated circuit (ASIC) 9b mounted on the upper surface 9a1 of the substrate 9a. It is done. The ASIC 9 b generates heat when energized, and the heat generation amount is the largest in the image recording operation on the sheet P among the plurality of electronic components. The control unit 9 controls the above-described feed motor and transport motor based on image data, transports the sheet P, and controls the recording unit 24 to record an image on the transported sheet P. Further, the control unit 9 controls an image sensor 6 and a CR motor described later of the scanner unit 2 to read an image of a document.

[Scanner unit 2]
As shown in FIG. 1, the scanner unit 2 is configured as a so-called flatbed scanner having an open / close cover 3 and a scanner main body 4. The scanner body 4 includes, as shown in FIG. 3A, a substantially rectangular scanner housing 5 having an internal space S, an image sensor (reading unit) 6 for reading an image recorded on a document, and an inside And a moving mechanism 7 for moving the image sensor 6 in the lateral direction C in the space S.

  The scanner housing (upper housing) 5 has an upper plate 5a and a bottom plate 5b which define an internal space S, as shown in FIG. 3 (a). The upper plate 5a has a flat transparent glass plate 5a1 as a document table at its central portion. Further, in the bottom plate 5b, a through hole 5b1 penetrating in the vertical direction A is formed. The through hole 5b1 is disposed at a position overlapping the entire ASIC 9b along the up-down direction A when the scanner housing 5 is disposed at a close position described later. The bottom plate 5b is provided with a filter 5b2 so as to close the through hole 5b1. The filter 5 b 2 is formed with a plurality of minute holes capable of capturing the ink mist generated by the ink discharge from the recording head 57. This makes it possible to prevent ink mist from intruding into the internal space S from the through holes 5b1. Therefore, it is possible to suppress the adhesion of the ink mist to the image sensor 6 and the glass plate 5a1.

  As shown in FIG. 3A, the scanner body 4 is supported by the printer case 11 so as to be rotatable about a spindle 11b provided in the rear end portion of the printer case 11 and parallel to the lateral direction C. It is done. That is, the scanner housing 5 is the position shown in FIG. 3B from the proximity position where the front lower end of the scanner housing 5 is in contact with the printer housing 11 as shown in FIG. A front lower end of the scanner housing 5 is supported by the printer housing 11 so as to be rotatable between a separate position separated from the printer housing 11. Further, as shown in FIG. 3B, a slide member 5c that expands and contracts in the vertical direction A is provided at the left end portion of the scanner housing 5 as the scanner housing 5 rotates with respect to the printer housing 11. ing.

  The image sensor 6 is configured by a long line CCD (charge-coupled device) along the longitudinal direction B, reads an image of a document placed on the glass plate 5a1 from below, and outputs the image to the control unit 9 . The controller 9 records an image on the sheet P based on the image data and the like output from the image sensor 6. The moving mechanism 7 reciprocates the support portion 7b in the left-right direction C with a pair of guide shafts 7a extending in parallel with each other in the left-right direction C, a support portion 7b movably disposed along the pair of guide shafts 7a. And a belt transmission mechanism (not shown) to be moved. The image sensor 6 is fixed to the upper surface of the support 7 b. Then, the support portion 7 b is reciprocated along with the image sensor 6 in the left-right direction C. The belt transmission mechanism includes two pulleys disposed in the inner space S, an endless timing belt and a CR motor. The two pulleys are disposed apart from each other in the left-right direction C, and a timing belt is bridged. A part of the timing belt is fixed to the support 7 b. One of the pulleys is connected to the drive shaft of the CR motor, and when the CR motor is driven, the timing belt travels, and the image sensor 6 moves in the left-right direction C together with the support portion 7b.

  The open / close cover 3 is a flat member having the same planar shape and size as the upper surface of the scanner body 4 as shown in FIGS. 1 and 3A. Further, as shown in FIG. 3A, the openable cover 3 can be rotated about a spindle 5c provided in the rear end portion of the scanner case 5 and parallel to the lateral direction C. It is supported by That is, by rotating the front lower end of the opening / closing cover 3 so as to separate it from the scanner main body 4, the glass plate 5a1 as a document table is exposed to the outside, and the document is placed on the glass plate 5a1. Is possible. Then, after the document is placed on the glass plate 5a1, the open / close cover 3 is rotated to a position where the front lower end of the open / close cover 3 approaches the scanner body 4. Thus, the original image can be read normally.

  A through hole 11 c (lower through hole) is formed in the printer case 11 in the present embodiment at a position opposed to the ASIC 9 b in the vertical direction A. More specifically, as shown in FIG. 3A, the printer housing 11 covers the substrate 9a above the substrate 9a, and a ceiling portion 11d facing the bottom plate 5b of the scanner housing 5 in the proximity position. Have. And the through-hole 11c is formed in the ceiling part 11d. As shown in FIG. 4A, the through holes 11c are formed one size larger than the planar size of the ASIC 9b, and are opposed to the entire ASIC 9b and the substrate 9a in the up-down direction A. Further, as shown in FIG. 3A, the through hole 11c is formed in the bottom plate 5b of the scanner case 5 when the scanner case 5 is disposed at the close position, and the through hole 5c is formed in the vertical direction A. Overlap along.

  As shown in FIG. 4, the printer case 11 is provided with a lower lid 41 for opening and closing the through hole 11 c and a lower lid moving mechanism 42 for moving the lower lid 41. The lower lid 41 has a size larger than that of the through hole 11 c by one size, and is slidably supported in the left-right direction C on the lower surface of the ceiling portion 11 d. The lower lid 41 is a position shown in FIG. 4 (a) at a position lower than the through hole 11c, and a lower open position where the through hole 11c is opened, and a position shown in FIG. 4 (b) It is disposed movably in the left-right direction C between the lower closed position where the through hole 11 c can be closed.

  The lower lid moving mechanism 42 has an elastic member 43, a wire 44, and two pulleys 45 and 46. The left end in FIG. 4 of the elastic member 43 is connected to the right end of the lower cover 41, and the right end in FIG. 4 is connected to the printer housing 11, and the lower end of the lower cover 41 is arranged to be able to be pulled rightward. . That is, the biasing force to the right acts on the lower cover 41 by the elastic member 43. The two pulleys 45 and 46 are disposed apart from each other in the front-rear direction B at the left end portion of the printer housing 11 as shown in FIGS. 4 and 5. As shown in FIGS. 4 and 5, the wire 44 is disposed in the printer housing 11 via two pulleys 45 and 46, one end thereof is connected to the left end of the lower lid 41, and the other end is a slide member It is connected to the upper end of 5c. More specifically, the wire 44 extends leftward from the left end of the lower lid 41 and extends rearward via the pulley 45. The wire 44 then extends through the pulley 46 to the upper end of the slide member 5c.

  With this configuration, when the scanner housing 5 is in the close position, as shown in FIG. 4A, the lower cover 41 is pulled leftward by the elastic member 43 and positioned at the lower open position. Then, when the scanner housing 5 is rotated from the close position to the separated position with respect to the printer housing 11, as shown in FIGS. 4 (b) and 5, the wire 44 is stretched by the upward extension of the slide member 5c. The end moves upward. As a result, the lower lid 41 is pulled leftward by the wire 44, moves leftward against the biasing force of the elastic member 43, and is positioned at the lower closed position. That is, the lower lid 41 automatically moves between the lower open position and the lower closed position as the scanner housing 5 rotates.

  Further, as shown in FIGS. 3 and 5, the upper lid 51 for opening and closing the through hole 5b1 and the upper lid moving mechanism 52 for moving the upper lid 51 are provided in the internal space S of the scanner housing 5 in the present embodiment. It is provided. The upper lid 51 has a size larger than that of the through hole 5b1 and is supported slidably in the left-right direction C on the upper surface of the bottom plate 5b. Also, as shown in FIG. 3 (a), the upper cover 51 is, as shown in FIG. 3 (b), an upper open position at which the through hole 5b1 is opened as shown in FIG. 3 (a). It is disposed movably in the left-right direction C between the upper closed position where it is possible to close the through hole 5b1.

  The upper lid moving mechanism 52 is substantially the same as the lower lid moving mechanism 42 and has the same arrangement relationship in a plan view, and thus the reference numerals in parentheses are shown in FIG. The upper lid moving mechanism 52 has an elastic member 53, a wire 54, and two pulleys 55, 56, as shown in FIGS. The left end in FIG. 4 of the elastic member 53 is connected to the right end of the upper cover 51, and the right end in FIG. 4 is connected to the scanner housing 5 so that the upper cover 51 can be pulled rightward. That is, the biasing force to the right acts on the upper lid 51 by the elastic member 53. As shown in FIG. 5, the two pulleys 55 and 56 are disposed apart from each other in the front-rear direction B at the left end portion of the scanner housing 5. As shown in FIGS. 4 and 5, the wire 54 is disposed on the scanner housing 5 via two pulleys 55 and 56, one end of which is connected to the left end of the upper cover 51, and the other end of which is the printer housing. It is connected near the 11 slide members 5c. More specifically, the wire 54 extends leftward from the left end of the upper lid 51 and extends rearward via the pulley 55. Then, the wire 54 extends along the slide member 5 c via the pulley 56 to the printer case 11.

  With this configuration, when the scanner housing 5 is in the close position, as shown in FIGS. 3A and 4A, the upper cover 51 is pulled leftward by the elastic member 53 and positioned in the upper open position. It is done. Then, when the scanner housing 5 is rotated from the close position to the separated position with respect to the printer housing 11, as shown in FIG. 3B, FIG. 4B and FIG. By separating upward from the body 11, one end of the wire 54 moves to the left. As a result, the upper lid 51 is pulled leftward by the wire 54, moves leftward against the biasing force of the elastic member 53, and is positioned at the upper closed position. That is, like the lower lid 41, the upper lid 51 automatically moves between the upper open position and the upper closed position as the scanner housing 5 rotates.

  As described above, according to the multifunction machine 1 of the present embodiment, the through holes 11c are disposed at positions facing the substrate 9 in the vertical direction A and the through holes 5b1 overlapping the substrate 9 in the vertical direction A, When the scanner housing 5 is disposed at the close position, the upper cover 51 is positioned at the upper open position, and the lower cover 41 is positioned at the lower open position. As described above, since the through holes 5b1 and 11c are disposed at the positions overlapping the substrate 9a in the vertical direction A, when the scanner casing 5 is disposed at the close position, it is in the printer casing 11 Thus, the space between the substrate 9a and the ceiling portion 11d and the internal space S of the scanner housing 5 can be communicated vertically by the through holes 5b1 and 11c. Therefore, when the scanner housing 5 is disposed at the close position, the image recording operation based on the image data is executed, and even if the ASIC 9 b generates heat, the heat is generated from the space between the substrate 9 a and the ceiling 11 d By moving to the internal space S, heat is less likely to build up in the space between the substrate 9 a of the printer housing 11 and the ceiling portion 11 d. As a result, it is possible to effectively dissipate the heat of the electronic components including the ASIC 9 b.

  Further, when the scanner housing 5 is disposed in the close position, the two through holes 5b1 and 11c overlap in the vertical direction A. As a result, when the scanner housing 5 is disposed in the close position, heat is more moved from the space between the substrate 9 a of the printer housing 11 and the ceiling 11 d to the internal space S of the scanner housing 5. As a result, heat is less likely to build up in the space between the substrate 9 a and the ceiling 11 d of the printer housing 11. Therefore, it is possible to more effectively dissipate the heat of the electronic components including the ASIC 9 b.

  Further, the through hole 11c is disposed at a position opposed to the ASIC 9b along the vertical direction A, so that the heat generated by the ASIC 9b is easily moved to the internal space S, and the substrate 9a of the printer case 11 and The heat between the ceiling portion 11 d and the space becomes even more difficult. Therefore, it is possible to more effectively dissipate the heat of the electronic components including the ASIC 9 b.

  Further, by having the lower lid 41 and the lower lid moving mechanism 42, the through hole 11c can be closed by the lower lid 41 when the scanner housing 5 is at the separated position, and dust etc. Foreign matter is less likely to intrude into the space between the substrate 9a and the ceiling 11d through the through hole 11c.

  Further, by having the upper lid 51 and the upper lid moving mechanism 52, when the scanner housing 5 is at the separated position, the through hole 5b1 can be closed by the upper lid 51, and foreign matter such as dust penetrates It becomes difficult to intrude into interior space S via hole 5b1.

  As a modification, instead of the lower lid moving mechanism 42 and the upper lid moving mechanism 52, a lid moving mechanism 72 and a sensor 81 shown in FIG. 6 may be provided. The sensor 81 is a non-contact type proximity sensor provided at the upper left end of the printer housing 11 and detects whether the scanner housing 5 is in the proximity position or the separated position with respect to the printer housing 11. The detection signal is output to the control unit 9. The sensor 81 may be a contact type sensor with the scanner housing 5 and is not particularly limited.

  The lid moving mechanism 72 includes a drum 73 and a drive motor 74 in addition to the elastic members 43 and 53, the wires 44 and 54, and the pulleys 45, 46, 55 and 56 described above. That is, the lid moving mechanism 72 doubles as the lower lid moving mechanism and the upper lid moving mechanism. In addition, the pulley 46 in this modification is arrange | positioned slightly ahead rather than the arrangement position in the above-mentioned embodiment. In addition, description is abbreviate | omitted about the thing similar to the above-mentioned embodiment.

  The drum 73 is configured to be able to wind and unwind the wires 44 and 54. The drive motor 74 has its drive shaft connected to the drum 73, and rotates the drum 73 when unwinding or unwinding the wires 44, 45 from the drum 73. The control unit (upper lid control device and lower lid control device) 9 in the present modification, when a signal indicating that the scanner housing 5 is in the close position is output from the sensor 81, the respective wires 44 and 45 by a predetermined length The drive motor 74 is controlled to rotate the drum 73 so as to be unwound. As a result, when the scanner housing 5 is in the close position, the lengths of the wires 44 and 54 become longer than those in the separated position. For this reason, the lower lid 41 and the upper lid 51 are pulled leftward by the elastic members 43 and 53 and positioned at the lower and upper open positions. On the other hand, when a signal indicating that the scanner housing 5 is at the separated position is output from the sensor 81, the control unit 9 rotates the drum 73 so as to wind the wires 44 and 45 by a predetermined length. The drive motor 74 is controlled. As a result, the lengths of the wires 44 and 54 become shorter than those in the close position. For this reason, the lower lid 41 and the upper lid 51 are pulled leftward by the respective wires 44, 54, move leftward against the biasing force of the elastic members 43, 53, and are positioned at the lower and upper closed positions. Also in this modification, the lower lid 41 and the upper lid 51 automatically move between the lower and upper open positions and the lower and upper closed positions as the scanner housing 5 rotates.

  Also in such a modification, the same effect can be obtained for the same part as that of the above-described embodiment. Further, by having the sensor 81 and the lid moving mechanism 72 as the lower lid moving mechanism, the through hole 11 c can be closed by the lower lid 41 when the scanner housing 5 is at the separated position. It becomes difficult for foreign substances such as dust to intrude into the space between the substrate 9a and the ceiling 11d through the through holes 11c. In addition, by having the sensor 81 and the lid moving mechanism 72 as the upper lid moving mechanism, the through hole 5b1 can be closed by the upper lid 51 when the scanner housing 5 is at the separated position, and dust And the like are less likely to intrude into the internal space S through the through holes 5b1. In order to move the lower cover 41 and the upper cover 51 individually, dedicated drums and drive motors may be provided.

  As mentioned above, although the preferred embodiment of the present invention was described, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the scope of the claims. For example, in the above embodiment, the upper cover 51 and the lower cover 41 that open and close the through holes 5b1 and 11c by the rotation of the scanner case 5 with respect to the printer case 11; the upper cover moving mechanism 52 and the lower cover moving mechanism 42; However, the upper cover 51 and the lower cover 41, the upper cover moving mechanism 52, and the lower cover moving mechanism 42 may not be provided. That is, the through hole 5 b 1 may be simply formed in the bottom plate 5 b of the scanner housing 5, and the through hole 11 c may be formed in the ceiling portion 11 d of the printer housing 11. Also in this case, the same effect as that of the above-described embodiment can be obtained. Further, only one of the upper lid 51 and the upper lid moving mechanism 52 and the lower lid 41 and the lower lid moving mechanism 42 may be provided.

  The through holes 5b1 and 11c may or may not overlap with each other in the vertical direction as long as they overlap with the substrate 9a in the vertical direction A at the close position. Further, in the above-described embodiment, only one through hole 5b1 is formed, but a plurality of through holes may be formed as long as they overlap the substrate 9a along the vertical direction A at the close position. . At this time, at least a part of the plurality of through holes 5b1 and the plurality of through holes 11c may overlap at the top and bottom at the proximity position, or may not overlap with each other. When a plurality of through holes 11c are formed, any one of the plurality of through holes 11c may vertically overlap with the ASIC 9b, or even if all the through holes 11c vertically overlap with the ASIC 9b. Good. Also, the through hole 11c may overlap with part of the ASIC 9b, or may not overlap with the ASIC 9b. Further, the filter 5 b 2 may not be provided on the bottom plate 5 b.

  The scanner housing 5 may move between the close position and the separated position by sliding in a direction intersecting the horizontal direction with respect to the printer housing 11. If the upper lid moving mechanism 52 and the lower lid moving mechanism 42 described above and the lid moving mechanism 72 can move the upper lid 51 and the lower lid 41 between the closed position and the open position, other mechanisms etc. You may use and do not specifically limit.

  Further, in the above-described embodiment, the method for recording the image on the sheet P by the recording unit 24 is the inkjet recording method, but the method for recording the image on the sheet P by the recording unit 24 is not limited to the inkjet recording method. For example, an electrophotographic method may be used.

1 MFP 5 Scanner housing (upper housing)
5b bottom plate 5b1 through hole (upper through hole)
5b2 filter 6 image sensor (reading unit)
9 Controller (lower lid control device and upper lid control device)
9a PCB 9b ASIC (Electronic Component)
11 Printer chassis (lower chassis)
11c Through hole (lower through hole)
11 d ceiling portion 24 recording portion 27 recording head (liquid discharge head)
41 lower lid 42 lower lid moving mechanism 51 upper lid 52 upper lid moving mechanism 72 lid moving mechanism (lower lid moving mechanism and upper lid moving mechanism)
81 Sensor S Internal space

Claims (8)

An upper case having an internal space in which a reading unit for reading an image can reciprocate, a substrate on which an electronic component that generates heat when energized is mounted, and a recording unit for recording an image on a recording medium And a lower housing for accommodating the upper housing, wherein the upper housing is movable between a close position where the upper housing is closer to the lower housing and a separated position where the upper housing is farther from the lower housing than the near position. In a multifunction machine in which a case is supported by the lower case,
The lower housing covers the substrate above the substrate, and has a ceiling portion facing the bottom plate defining the inner space of the upper housing at the proximity position and facing the bottom plate.
A lower through hole is formed in the ceiling portion at a position facing the substrate,
An upper through hole is formed in the bottom plate of the upper housing at a position overlapping the substrate in the vertical direction in the proximity position.   The multifunction device according to claim 1, wherein the upper through hole and the lower through hole overlap at the proximity position along the vertical direction.   The multifunction device according to claim 1, wherein the lower through hole is disposed at a position facing the electronic component. A lower lid movable between a lower closed position closing the lower through hole and a lower open position opening the lower through hole;
The lower lid is moved to the lower open position when the upper housing is in the close position, and the lower lid is moved to the lower closed position when the upper housing is in the separated position. The multifunction peripheral according to any one of claims 1 to 3, further comprising: a lid moving mechanism. An upper lid movable between an upper closed position closing the upper through hole and an upper open position opening the upper through hole;
An upper lid moving mechanism for moving the upper lid to the upper open position when the upper housing is in the close position, and for moving the upper lid to the upper closed position when the upper housing is in the separated position; The multi-functional peripheral according to any one of claims 1 to 4, further comprising: A lower lid movable between a lower closed position closing the lower through hole and a lower open position opening the lower through hole;
A sensor that detects whether the upper case is at the close position or the separated position;
A lower lid moving mechanism for moving the lower lid between the lower closed position and the lower open position;
When the sensor detects that the upper case is at the close position, the sensor detects that the upper case is at the separated position so as to move the lower lid to the lower open position. A lower lid control device for controlling the lower lid moving mechanism so as to move the lower lid to the lower closed position when being operated. The multi-function machine described in Item 1 An upper lid movable between an upper closed position closing the upper through hole and an upper open position opening the upper through hole;
A sensor that detects whether the upper case is at the close position or the separated position;
An upper lid moving mechanism for moving the upper lid between the upper closed position and the upper open position;
When the sensor detects that the upper case is at the close position, the sensor detects that the upper case is at the separated position so as to move the upper lid to the upper open position. 4. An upper lid control device for controlling the upper lid moving mechanism so as to move the upper lid to the upper closed position at the same time. MFP. The recording unit includes a liquid discharge head which discharges a liquid onto a recording medium to record an image.
The filter according to any one of claims 1 to 7, further comprising: a filter provided to close the upper through hole and capable of capturing liquid mist generated by liquid discharge from the liquid discharge head. The multifunction machine described in the section.

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