JP2016193547A - Carrier device and image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier device which allows insertion or extraction of a tray to switch carrier means carrying a sheet by nipping the same, between a sheet nipping state enabling the carrier means to nip the sheet and a sheet releasing state preventing the carrier means from nipping the sheet and can prevent the carrier means from reducing sheet carrying accuracy, and to provide an image recording device mounted with the carrier device.SOLUTION: A first interlock mechanism has a contact member which changes a state thereof by a contact with a tray in a process of being moved from an insertion position with the tray inserted into a carrier device to an extraction position corresponding to a state with the tray extracted from the carrier device and in a process of being moved from the extraction position to the insertion position, and moves a moving member to a second position and a first position in tandem with a change in the state of the contact member.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a conveyance device that conveys a sheet and an image recording apparatus including the conveyance device.

  For example, when a paper jam occurs in the image recording apparatus, the user performs processing (hereinafter referred to as jam processing) to remove the recording paper jammed in the paper conveyance path. However, when the jammed paper is jammed between the recording papers that have been jammed by a pair of conveying rollers for conveying the recording papers, it is difficult to remove the recording papers. In particular, in order to increase the recording paper conveyance accuracy by the conveyance roller pair, when the force (nip load) for pinching the paper by the conveyance roller pair is increased, the paper tears when the paper is pulled out from the conveyance roller pair. It is also conceivable that the shards are mixed into the apparatus and difficult to remove from the apparatus.

  In order to eliminate the above inconvenience, an image configured to automatically cancel the nip state in which the rollers of the pair of conveying rollers are in contact with each other and pinch the paper, when the paper feed tray is pulled out from the apparatus main body. A recording apparatus is known (see Patent Documents 1 and 2). As a result, the user can release the nip state of the pair of conveying rollers simply by pulling out the paper feed tray from the apparatus main body, and the recording paper causing the paper jam can be removed, for example, the opening of the apparatus main body in which the paper feed tray is mounted. Can be easily removed through the part. The conventional image recording apparatus also has a mechanism for automatically returning the pair of conveying rollers to the nip state when, for example, the jam processing is completed and the user mounts the paper feed tray on the recording apparatus.

JP-A-7-277552 JP-A-7-33268

  As described above, the conventional image recording apparatus is interlocked with automatically releasing the nip state of the transport roller pair and automatically returning the transport roller pair to the nip state in conjunction with the loading and unloading of the paper feed tray. It has a mechanism. Such an interlocking mechanism has a release member that protrudes into a space in which the paper feed tray is mounted and pulled out, and that can change a state such as turning by contacting the tray moved by a user or the like. A change in the state of the release member in one direction during the process of pulling out the paper feed tray is transmitted as a movement of one roller of the pair of transport rollers away from the other roller, thereby releasing the nip state of the pair of transport rollers. Is done. On the other hand, the state change in the other direction of the release member in the process of mounting the paper feed tray is transmitted as a movement of the conveying roller pair to return to the nip state.

  In the above conventional image recording apparatus, for example, after the tray is pulled out from the apparatus and the nip state of the conveying roller pair is released, the sheet feeding tray remains pulled out from the apparatus due to a user's erroneous operation or the like. As a result, the conveying roller pair may return to the nip state. In such a case, following the return of the conveying roller pair to the nip state, the posture of the release member changes to the corresponding position. However, the position of the release member when the transport roller pair is in the nip state is different from the position of the release member when the nip of the transport roller pair is released. Even if the paper feed tray is to be attached to the apparatus in this state, a situation may occur in which the paper feed tray collides with a release member whose posture has already changed and the paper feed tray cannot move to the attachment position.

  The present invention has been made in view of the above circumstances, and its purpose is to mount a tray capable of supporting a sheet on a tray that can support the sheet, and to pull out the tray from the apparatus. In a configuration having an interlocking mechanism that can be switched between a nip state in which the sheet can be sandwiched and a nip release state in which the nip state is released, the attachment and withdrawal of the tray is hindered by the interlocking mechanism. It is an object of the present invention to provide a transport device that can prevent the occurrence of the problem and an image recording apparatus including the transport device.

  (1) The transport device according to the first embodiment of the present invention can transport a transport roller, a contact position where the transport roller and the sheet can be sandwiched, a contact position contacting the transport roller, and a separation position separating the transport roller. A holding member that is movable to the device, and the sheet can be supported, and can be attached to the device and pulled out from the device. The attached state attached to the device and the device pulled out from the device A tray that can be moved to a pulled-out state, and is provided so as to be rotatable around a rotation axis that extends in a mounting direction when the tray is mounted on the apparatus and a direction that intersects a pulling direction when the tray is pulled out from the apparatus. The first state, the second state rotated from the first state by the angle θ1 of less than 180 ° in the first rotation direction around the rotation axis, and the rotation from the first state to the rotation axis. No. 1 above It is possible to take a third state rotated by an angle θ2 of less than 180 ° in a second rotation direction opposite to the direction, the first state being a specified position, and in the first state, It is possible to contact between the mounted state and the pulled-out state, and when the tray moves from the mounted state to the pulled-out state, the contact with the tray causes the first state to rotate to the second state. And a lever member that rotates from the first state to the third state by contact with the tray when the tray moves from the pulled-out state to the mounted state, and the first of the lever member. The holding member is moved to the separation position by turning from the first state to the second state, and the holding member is moved to the contact position by turning the lever member from the first state to the third state. Moved to Includes an interlocking mechanism that, a.

  According to the above configuration, when the tray is mounted on the apparatus, the holding member is in a contact position where the holding member comes into contact with the conveying roller, and the conveying unit including the conveying roller and the holding member has a nip that can hold the sheet. It is in a state. The lever member is urged with the first state as a specified position. When the tray moves from the mounted state to the pulled-out state, the tray abuts on the lever member in the first state, and the lever member is in the first state. To the second state in the first rotation direction. When the lever member rotates from the first state to the second state, the clamping member is moved to the separation position by the interlocking mechanism, and the conveying means is released from the nip state and is in the released state. Further, the lever member returns to the first state as the specified position. As described above, for example, in an inkjet recording apparatus, it is easy to perform jam processing.

  On the other hand, also when the tray moves from the mounted state to the pulled-out state, the tray contacts the lever member in the first state, and the lever member rotates from the first state to the third state in the second rotation direction. When the lever member rotates from the first state to the third state, the clamping member is moved to the contact position by the interlocking mechanism, and the conveying means is in the nip state. Further, the lever member returns to the first state as the specified position. Thereby, for example, in an ink jet recording apparatus, it is possible to record an image on a recording sheet. As described above, according to the above-described configuration, the nip of the conveying unit is brought into contact with the lever member positioned in the first state even when the conveying unit is in the nip state or in the nip released state. Can be released and restored. Therefore, for example, even when the nip of the transport unit is restored in a state where the tray is pulled out from the apparatus due to a user's erroneous operation, the tray is not attached to the apparatus due to contact with the lever member. It becomes easy to prevent this.

  (2) Preferably, in the transport device, the tray has a lever abutting portion that can abut against a lever member positioned in the first state, and the lever abutting portion is attached to the tray. In the state, it is not in contact with the lever member.

  According to the above configuration, since the tray is not in contact with the lever member in a state where the tray is mounted on the apparatus, for example, a biasing force that biases the clamping member toward the conveyance roller is applied to the lever member. In this case, the biasing force is not applied to the tray via the lever member. Therefore, even when the clamping member is not positioned with respect to the tray and the positioning accuracy between the lever member and the tray and the mounting accuracy of the tray with respect to the apparatus are not high, the sheet of the sheet by the conveying roller and the clamping member is not high. It becomes easy to ensure sufficient conveyance accuracy.

  (3) Preferably, the transport device further includes a holding member that holds the holding member and is movable integrally with the holding member, and the interlocking mechanism is capable of contacting the holding member, The clamping member is movable between a first position where the abutting position is the contact position and a second position where the clamping member is the separation position, and the lever member is rotated from the first state to the second state. The moving member moves to the first position by movement, and moves to the second position by turning the lever member from the first state to the third state.

  According to the above configuration, even when the holding member is a rotating member such as a roller, the holding member can be moved in a rotatable state by holding the holding member with the holding member. That is, the holding member can be configured to change its state and be movable.

  (4) Preferably, the transport device further includes a first urging member that urges the lever member to the first state.

  According to the above configuration, the lever member can be urged to the first state which is the specified position by a simple urging member such as a spring. In the configuration in which the nip of the conveying means and the release thereof are switched by contact with the tray, it is possible to prevent the tray mounting and withdrawal from being hindered by the interlocking mechanism. The lever member may be biased to the first state by its own weight.

  (5) Preferably, the conveyance device further includes a second urging member that urges the clamping member toward the conveyance roller, and the moving member is connected to the holding member at the first position. It does not contact.

  According to the above configuration, the holding member is brought into contact with the moving member located at the second position, and the nip of the conveying means and the release thereof are switched with a simple configuration in which the holding member is not brought into contact with the moving member located at the first position. be able to. Therefore, manufacture of a conveying apparatus can be made easy.

  (6) Preferably, in the transport device, the moving member is movable to the first position and the second position along the mounting direction and the pulling direction, and the mounting direction and the pulling direction are The lever member is disposed in the pull-out direction with respect to the lever member and is capable of contacting the lever member rotating from the first state to the second state in the first rotation direction. The first abutting portion that moves the moving member to the first position by the rotation of the lever member and the lever member in the mounting direction and the pull-out direction are arranged in the mounting direction with respect to the lever member. A second contact that is able to contact the lever member that rotates in the second rotation direction from the state to the third state, and moves the moving member to the second position by the rotation of the lever member. Part.

  According to the above configuration, the moving member is moved to the first position and the second position in conjunction with the rotation of the lever member by a simple configuration in which the moving member is provided with, for example, two rod-like or protruding contact portions. An interlocking mechanism to be moved can be configured. Therefore, the interlocking mechanism can have a simple structure, and manufacture of the transport device can be facilitated.

  (7) Preferably, in the transport device, the lever member is positioned in the first state by contacting the first contact portion in a state where the moving member is located at the first position. In the state where the moving member is positioned at the second position, the moving member is positioned in the first state by contacting with the second contact portion.

  According to the above configuration, in both the state where the moving member is located at the first position and the state where the moving member is located at the second position, the first abutment portion and the second abutment portion cause the lever member to be in the first position. Can be positioned in a state. Thereby, the tray can be reliably brought into contact with the lever member when the tray is mounted and pulled out. Accordingly, it is possible to reliably switch the nip of the transport means in conjunction with the tray mounting and withdrawal.

  (8) Preferably, the transport device further includes a first frame that supports the holding member in a movable manner and supports the moving member in a movable manner.

  According to the above configuration, the positional relationship between the holding member and the moving member can be defined by the first metal frame, for example. It becomes easy to position to. Thereby, it becomes easy to ensure sufficient conveyance accuracy of the sheet by the conveyance means.

  (9) Preferably, the transport device further includes a second frame supported by the first frame and rotatably supporting the lever member.

  According to the said structure, the positional relationship of a holding member, a moving member, and a lever member can be prescribed | regulated, for example with the metal 1st frame and 2nd frame. Therefore, the moving member can be reliably moved to the first position and the second position in conjunction with the rotation of the lever member. Of course, the first frame and the second frame can be integrated. However, by making the first frame and the second frame separate, the degree of freedom in designing the transport device is increased, and the manufacture of the transport device can be facilitated.

  (10) Preferably, in the transport device, the clamping member is a roller.

  (11) An image recording apparatus according to an embodiment of the present invention includes the transport device and a recording unit that records an image on a sheet.

  According to the present invention, the conveyance means for nipping and conveying the sheet is configured so that the nip state in which the sheet can be nipped is interlocked with the mounting of the tray capable of supporting the sheet to the apparatus and the withdrawal from the apparatus. In the configuration having an interlocking mechanism that can be switched between the released nip released state, it is possible to prevent the tray from being hindered from being hindered by the interlocking mechanism.

FIG. 1 is a perspective view of a multifunction machine 10 including a printer unit 11 as an image recording apparatus according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view schematically showing the internal structure of the printer unit 11. FIG. 3 is a top view of the first frame 51 that supports the transport roller 60 as viewed from the upper direction 7A. FIG. 4 is a perspective view of the first frame 51 that supports the moving member 53 in the first position, as viewed from the lower direction 7B. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a cross-sectional view taken along line VV in FIG. 3 showing the positional relationship between the lever member 54 and the feeding tray 20, wherein the feeding tray 20 is located at the mounting position P <b> 1 (a), And the state (b) in the middle of pulling out the feeding tray 20 from the printer unit 11 is shown. FIG. 7 is a cross-sectional view taken along line VV in FIG. 3 showing the positional relationship between the lever member 54 and the feeding tray 20, and the state where the feeding tray 20 is located at the drawing position P2 (a), And the state (b) in the middle of mounting | wearing the apparatus with the feeding tray 20 is shown. FIG. 8 is a perspective view of the first frame 51 that supports the moving member 53 in the second position, as viewed from the lower direction 7B.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention. In the following description, the upper direction 7A and the lower direction 7B are defined on the basis of the state in which the multifunction machine 10 is installed so as to be usable (the state in FIG. 1), and the surface on which the opening 13 is provided is the front (front surface). Are defined as a forward direction 8A and a rear direction 8B, and a left direction 9A and a right direction 9B are defined when the MFP 10 is viewed from the front (front side).

[Overall structure of MFP 10]
As shown in FIG. 1, the multifunction machine 10 is generally formed in a thin rectangular parallelepiped, and is provided with a printer unit 11 (an example of an image recording apparatus) in the lower part. The multifunction machine 10 has various functions such as a facsimile function and a print function. The multifunction device 10 has a function of recording an image on one side of the recording paper 12 (see FIG. 2) by an inkjet method as a printing function. The multifunction machine 10 may record images on both sides of the recording paper 12. The printer unit 11 includes a transport device that transports the recording paper 12. The transport device mechanically interlocks with the transport roller pair 59 and the insertion / extraction of the feeding tray 20 to switch the nip state and release state (nip release state) of the transport roller pair 59 (an example of an interlock mechanism). And have.

[Feeding tray 20]
As shown in FIG. 1, an opening 13 is formed on the front surface of the printer unit 11. The feeding tray 20 can be inserted into and removed from the printer unit 11 through the opening 13 by moving in the forward direction 8A and the backward direction 8B. Here, the front direction 8A and the rear direction 8B are examples of the mounting direction and the drawing direction.

  As shown in FIG. 2, the recording paper 12 is supported on the bottom plate 22 of the feeding tray 20 in a stacked state. The feeding tray 20 is a box-shaped member with an open top, and is located at the ends of the left and right directions 9A and 9B of the substantially rectangular bottom plate 22 in the upward direction 7A as shown in FIG. An extending substantially rectangular side plate 20B is erected. A protruding portion 20A (an example of a lever contact portion) protruding in the upward direction 7A is provided at an end portion of the side plate 20B in the rear direction 8B so as to be able to contact the lever member 54.

  A pair of side guides (not shown) that can move in the left direction 9A and the right direction 9B are supported by the bottom plate 22 of the feed tray 20. The left and right end portions 9A and 9B of the recording paper 12 supported by the bottom plate 22 are in contact with the side surfaces of the side guides. When one of the pair of side guides moves in the left direction 9A or the right direction 9B, the other moves in conjunction with the right direction 9B or the left direction 9A. As described above, in the present embodiment, the recording paper 12 is positioned with reference to the centers of the left direction 9A and the right direction 9B of the feeding tray 20.

[Discharge tray 21]
A discharge tray 21 is supported by the feed tray 20 at the front and top of the feed tray 20. The discharge tray 21 moves in the front direction 8 </ b> A and the rear direction 8 </ b> B together with the feeding tray 20. The recording paper 12 on which the image is recorded by the recording unit 24 is discharged to the discharge tray 21.

[Feeding unit 16]
As shown in FIG. 2, the feeding unit 16 is provided in the upper direction 7 </ b> A of the bottom plate 22 of the feeding tray 20 mounted on the printer unit 11 and in the lower direction 7 </ b> B of the recording unit 24. The feeding unit 16 includes a feeding roller 25, a feeding arm 26, and a drive transmission mechanism 27. The feed roller 25 is pivotally supported at the distal end portion of the feed arm 26. The feeding arm 26 rotates in the direction of an arrow 29 about a support shaft 28 provided at the base end. Thereby, the feeding roller 25 can be brought into contact with and separated from the feeding tray 20 or the recording paper 12 supported by the feeding tray 20.

  The feeding roller 25 is rotated by a driving force of a conveying motor (not shown) transmitted by a driving transmission mechanism 27 including a plurality of gears. As a result, among the recording sheets 12 supported by the bottom plate 22 of the feeding tray 20, the uppermost recording sheet 12 that is in contact with the feeding roller 25 is fed to the conveyance path 65. The feeding roller 25 may be rotated by applying a driving force from a motor provided separately from the conveying motor. Further, the drive transmission mechanism 27 is not limited to a form including a plurality of gears, and may include, for example, a belt spanned between the support shaft 28 and the shaft of the feeding roller 25.

[Conveyance path 65]
As shown in FIG. 2, a conveyance path 65 extends from the rear end portion of the feeding tray 20. The conveyance path 65 includes a curved portion 33 and a straight portion 34. The bending portion 33 extends while bending with the rear direction 8B as the curved outer side and the front direction 8A as the curved inner side. The straight portion 34 extends in the front direction 8A and the rear direction 8B.

  The bending portion 33 is formed by a first guide member 18 and a second guide member 19 that face each other with a predetermined interval. The first guide member 18 defines the curved outer side of the curved portion 33. The second guide member 19 defines the inside of the bending portion 33. The straight line portion 34 is formed by the recording portion 24 and the platen 42 facing each other with a predetermined interval at a position where the recording portion 24 is disposed. The first guide member 18 and the second guide member 19 extend in the left direction 9A and the right direction 9B, which are directions orthogonal to the paper surface in FIG.

  The recording paper 12 supported by the feeding tray 20 is conveyed by the feeding roller 25 so as to make a U-turn from the bottom to the curved portion 33 and reaches the conveying roller pair 59. The recording paper 12 sandwiched by the pair of transport rollers 59 is transported in the forward direction 8A through the linear portion 34 with the image recording surface facing the recording unit 24. An image is recorded on the image recording surface of the recording paper 12 that has reached directly below the recording unit 24 by the recording unit 24. The recording sheet 12 on which the image is recorded is conveyed in the forward direction 8 </ b> A through the linear portion 34 and discharged to the discharge tray 21. As described above, the recording paper 12 is transported along the transport direction 15 indicated by the one-dot chain line arrow in FIG.

[First guide member 18]
The first guide member 18 is configured to be rotatable in the direction of an arrow 66 around a shaft 48 formed in the lower portion. The first guide member 18 defines the curved outer side of the bending portion 33 in the first state located at the position indicated by the solid line in FIG. 2, and is in the second state located at the position indicated by the broken line in FIG. The curved portion 33 is exposed to the outside. The user of the multifunction machine 10 can take out the recording paper 12 jammed in the curved portion 33 by changing the state of the first guide member 18 from the first state to the second state.

  The first guide member 18 may change its state by other than rotation. For example, the first guide member 18 may be configured to be detachable from the printer unit 11. In this case, the first guide member 18 is attached to the printer unit 11 and defines a curved outer side of the curved portion 33, and a second state in which the first guide member 18 is detached from the printer unit 11 and exposes the curved portion 33 to the outside. The state changes between.

[Recording unit 24]
As shown in FIG. 2, the recording unit 24 is provided in the upward direction 7 </ b> A of the linear portion 34, and includes a carriage 40 and a recording head 38. A platen 42 is provided at a position facing the recording unit 24 in the downward direction 7 </ b> B of the recording unit 24. The platen 42 is a member that supports the recording paper 12 conveyed by the conveying roller pair 59 through the linear portion 34 by the upper part.

  The carriage 40 is supported by two guide rails 56 and 57 that are spaced apart in the front direction 8A and the rear direction 8B so as to be reciprocally movable in the left direction 9A and the right direction 9B. The recording head 38 is mounted on the carriage 40. Ink is supplied to the recording head 38 from an ink cartridge (not shown). A nozzle 39 is formed on the lower surface of the recording head 38. In a state where the carriage 40 moves in the left direction 9A and the right direction 9B, the recording head 38 ejects ink droplets from the nozzles 39 toward the platen 42. As a result, an image is recorded on the recording paper 12 supported by the platen 42.

[Conveying roller pair 59]
As shown in FIG. 2, a conveyance roller pair 59 is disposed upstream of the recording head 38 in the linear portion 34 of the conveyance path 65 in the conveyance direction 15. A discharge roller pair 44 is disposed downstream of the recording head 38 in the linear portion 34 in the transport direction 15.

[Conveying roller 60]
The conveyance roller pair 59 includes a conveyance roller 60 (an example of a conveyance roller) arranged in the upward direction 7A of the linear portion 34, and a pinch roller 61 (arranged to face the conveyance roller 60 in the downward direction 7B of the linear portion 34. An example of a clamping member). As shown in FIG. 3, the transport roller 60 is a cylindrical member extending in the left direction 9 </ b> A and the right direction 9 </ b> B inside the housing 14. The conveyance roller 60 is supported by the side frame 55 and is positioned in the upward direction 7 </ b> A of the first frame 51.

[Pinch roller 61]
A plurality of pinch rollers 61 are provided in the housing 14 at intervals in the left direction 9A and the right direction 9B. As shown in FIG. 5, the pinch roller 61 has a rotating shaft 61 </ b> A supported rotatably by a roller holder 85. As shown in FIG. 4, a plurality of roller holders 85 are provided corresponding to the pinch roller 61 at intervals in the left direction 9 </ b> A and the right direction 9 </ b> B. The roller holder 85 is supported by the first frame 51 in the upward direction 7 </ b> A of the first frame 51, and a plate spring-like biasing member 57 (an example of a second biasing member) supported by the first frame 51. In general, it is biased toward the transport roller 60 in the upward direction 7A.

[Discharge roller pair 44]
As shown in FIG. 2, the discharge roller pair 44 includes a discharge roller 62 disposed in the downward direction 7B of the linear portion 34, and a spur 63 disposed opposite to the discharge roller 62 in the upward direction 7A of the linear portion 34. And. A plurality of spurs 63 are provided at intervals in the left direction 9A and the right direction 9B. The discharge roller 62 includes a shaft 64 extending in the left direction 9 </ b> A and the right direction 9 </ b> B, and a roller portion 58 attached to the shaft 64. A plurality of roller portions 58 are also provided at intervals in the left direction 9 </ b> A and the right direction 9 </ b> B, and are provided at positions facing the spur 63. The spur 63 is pressed against the roller portion 58 by an elastic member (not shown).

  The transport roller 60 and the discharge roller 62 are rotated by a driving force transmitted from the transport motor. When the conveyance roller 60 rotates while the recording paper 12 is sandwiched between the conveyance roller pair 59 (nip state), the recording paper 12 is conveyed in the conveyance direction 15 by the conveyance roller pair 59. When the discharge roller 62 rotates while the recording paper 12 is sandwiched between the discharge roller pair 44, the recording paper 12 is transported in the transport direction 15 by the discharge roller pair 44.

[Biasing member 57]
As shown in FIG. 5, the urging member 57 is composed of, for example, a coil spring, and the axial direction is parallel to the upward direction 7A and the downward direction 7B, and the downward direction 7B of the bearing portion 85A of the roller holder 85. It is arranged at the position. One end portion of the urging member 57 is in contact with the bearing portion 85 </ b> A, and the other end portion is in contact with the first frame 51. Thereby, the urging member 57 urges the roller holder 85 in the upward direction 7A so that the pinch roller 61 is brought into contact with the conveying roller 60 positioned in the upward direction 7A. FIG. 5 shows a state in which the pinch roller 61 is located at the contact position P <b> 11 where the transport roller 60 contacts.

[Roller holder 85]
As shown in FIG. 5, the roller holder 85 includes a bearing portion 85A that rotatably supports the rotating shaft 61A of the pinch roller 61, and a front extending portion 85B that extends from the bearing portion 85A in the front direction 8A. And have. The front extending portion 85B has a lower extending portion 85C that extends in the downward direction 7B from the end portion in the front direction 8A. The lower extending portion 85C has a contact shaft 85D that protrudes in the left direction 9A and the right direction 9B at the end in the lower direction 7B. The contact shaft 85D can contact the contact surface 53A of the moving member 53. The moving member 53 has a second position P3 (see FIG. 6B) where the contact surface 53A contacts the contact shaft 85D, and a first position P4 (see FIG. 6B) where the contact surface 53A does not contact the contact shaft 85D. 6 (a)) and can be moved along the front direction 8A and the rear direction 8B. Here, the front direction 8A and the rear direction 8B are examples of the mounting direction and the drawing direction. The moving member 53 maintains the roller holder 85 at the separation position P12 against the urging force of the urging member 57 in a state where the abutting surface 53A abuts against the abutting shaft 85D at the second position P3 (FIG. 6 ( b)).

  The moving member 53 is supported by the first frame 51 so as to be movable between the second position P3 and the first position P4. A slit 51D extending in the front direction 8A and the rear direction 8B is provided at the center of the first frame 51 in the left direction 9A and the right direction 9B. The moving member 53 has a boss portion 51E that can be inserted into the slit 51D on the surface in the upward direction 7A. In a state where the boss portion 51E is protruded in the upward direction 7A from the first frame 51 through the slit 51D, the extension portion 51F extending in the left direction 9A and the right direction 9B at the end of the upward direction 7A of the boss portion 51E is the first. The frame 51 is engaged with the upper surface 7A. As described above, the moving member 53 is supported by the first frame 51 so as to be movable along the front direction 8A and the rear direction 8B.

[First frame 51]
As shown in FIG. 6, the first frame 51 has a front direction 8 </ b> A and a rear direction at a position in the upper direction 7 </ b> A of the feeding tray 20 mounted on the printer unit 11, as shown in FIG. 6. 8B is a plate-like member arranged to extend in the left direction 9A and the right direction 9B. The first frame 51 has an opening 51 </ b> B that projects the downwardly extending portion 85 </ b> C of the roller holder 85 in the downward direction 7 </ b> B. As shown in FIG. 3, a plurality of openings 51B are provided corresponding to the pinch roller 61 along the left direction 9A and the right direction 9B. A contact shaft 85D provided at the lower end portion of the lower extending portion 85C is located in the downward direction 7B of the first frame 51.

[Side frame 55]
As shown in FIG. 3, side frames 55 are provided at the ends of the first frame 51 in the left direction 9 </ b> A and the right direction 9 </ b> B, respectively. The side frames 55 are arranged in the left direction 9 </ b> A and the right direction 9 </ b> B with respect to the straight portion 34 of the conveyance path 65. The side frame 55 is a plate-like member perpendicular to the first frame 51, and the end in the lower direction 7 </ b> B is connected to the end in the left direction 9 </ b> A and the right direction 9 </ b> B of the first frame 51. Alternatively, the first frame 51 and the pair of side frames 55 may be an integral member.

  As shown in FIG. 5, the side frame 55 has a wide portion 55 </ b> A having a wide width in the upper direction 7 </ b> A and the lower direction 7 </ b> B at the end in the rear direction 8 </ b> B. The wide portion 55A protrudes in the upward direction 7A from the adjacent portion, and a bearing 80 (see FIG. 4) that rotatably supports the conveying roller 60 is attached to the end portion of the protruding portion in the front direction 8A. The side frame 55 rotatably supports the transport roller 60 via a bearing 80 at positions 9A and 9B in the left direction with respect to the straight portion 34 of the transport path 65.

[Second frame]
As shown in FIG. 3, the second frame 52 is attached to the first frame 51 at the ends in the left direction 9A and the right direction 9B. The second frame 52 is adjacent to the side frame 55. The pivot shaft 54 </ b> A of the lever member 54 shown in FIGS. 4, 5, and 8 is supported by the second frame 52.

[Lever member 54]
As shown in FIG. 5, the lever member 54 pulls out the feeding tray 20 from the printer unit 11 and the mounting direction D <b> 4 (see FIG. 7B) when the feeding tray 20 is mounted on the printer unit 11. It is provided so as to be rotatable around a rotation shaft 54A extending in a direction (here, left direction 9A and right direction 9B) orthogonal to the pull-out direction D3 (see FIG. 6B). The lever member 54 is attached to the rotation shaft 54A so that the tip portion 54B, which is the rotation tip portion, is in a first state (the state shown in FIG. 5) located in the downward direction 7B of the rotation shaft 54A. It is biased by a biasing member 54C (an example of a first biasing member) that is a torsion spring. In this first state, as shown in FIG. 6A, the lever member 54 is in a non-contact state in which the lever member 54 is not in contact with the feeding tray 20 in the state (mounted state) positioned at the mounting position P1. It has become. Thus, the lever member 54 is located in the first state at the specified position.

[Movement of feeding tray 20]
As shown in FIG. 6A, the feeding tray 20 is located at the mounting position P <b> 1 in the mounting state where the feeding tray 20 is mounted on the printer unit 11. In the mounted state shown in FIG. 6A, the lever member 54 is not in contact with the feeding tray 20 (including the side plate 20B) and the protruding portion 20A. When the feeding tray 20 is pulled out from the printer unit 11 from the mounted state shown in FIG. 6A, the feeding tray 20 moves in the forward direction 8A. At this time, the protruding portion 20A of the feeding tray 20 comes into contact with the distal end portion 54B of the lever member 54 in the first state. As a result, as shown in FIG. 6B, in the state where the feeding tray 20 is being pulled out from the printer unit 11, the lever member 54 performs the first rotation around the rotation shaft 54A from the first state. Rotate in the direction D1 by an angle θ1 to enter the second state. The distal end portion 54B of the lever member 54 in the second state is located in the forward direction 8A and the upward direction 7A from the distal end portion 54B of the lever member 54 in the first state. Here, the angle θ1 is an angle larger than 0 ° and smaller than 180 °.

  When the feeding tray 20 is further pulled out from the state shown in FIG. 6B, the feeding tray 20 moves in the forward direction 8A corresponding to the drawing direction D3, and the drawing shown in FIG. Position P2 is reached. In this state, the lever member 54 is positioned in the first state by the urging force of the urging member 54C.

  As shown in FIG. 7A, the feeding tray 20 is located at the pulling position P <b> 2 in the pulling state pulled out from the printer unit 11. When the feeding tray 20 is mounted on the printer unit 11 from the state shown in FIG. 7A, the feeding tray 20 is moved in the backward direction 8B. At this time, the protruding portion 20A of the feeding tray 20 comes into contact with the distal end portion 54B of the lever member 54 in the first state. As a result, as shown in FIG. 7B, in a state where the feeding tray 20 is being attached to the printer unit 11, the lever member 54 is moved from the first state to the second around the rotation shaft 54A. It turns by the angle θ2 in the turning direction D2 to enter the third state. The distal end portion 54B of the lever member 54 in the third state is located in the rear direction 8B and the upward direction 7A from the distal end portion 54B of the lever member 54 in the first state. Here, the angle θ2 is an angle larger than 0 ° and smaller than 180 °.

[Moving member 53]
The moving member 53 is provided on the first frame 51 so as to be movable along the mounting direction D4 and the drawing direction D3 (front direction 8A and rear direction 8B). As shown in FIGS. 4 to 8, the moving member 53 is along the surface of the first frame 51 in the downward direction 7B, and in the left direction 9A, the right direction 9B, the front direction 8A, and the rear direction 8B. The flat plate portion 50 extends, and the extending portion 50C extends in the downward direction 7B from the end portions of the flat plate portion 50 in the left direction 9A and the right direction 9B. As shown in FIG. 5, the extending portion 50 </ b> C is a plate-like member having a substantially rectangular shape when viewed in the left direction 9 </ b> A and the right direction 9 </ b> B, and is perpendicular to the upward direction 7 </ b> A and the downward direction 7 </ b> B. The surface is roughly U-shaped. In the extending part 50C, the end surface of the lower direction 7B is parallel to the front direction 8A and the rear direction 8B.

  The moving member 53 has a concave portion 50B having a rectangular opening on the surface of the flat plate portion 50 in the downward direction 7B. A plurality of recesses 50B are provided in the flat plate portion 50 in correspondence with the roller holder 85 along the left direction 9A and the right direction 9B. The recess 50B has cam portions 50A at the ends in the left direction 9A and the right direction 9B, respectively. The surface in the downward direction 7B of the cam portion 50A constitutes a contact surface 53A that can contact the roller holder 85. The contact surface 53A is substantially orthogonal to the first biasing direction (for example, the upward direction 7A) in which the biasing member 57 biases the roller holder 85. In addition, the moving member 53 has a first contact portion 53B and a second contact portion 53C in the extending portion 50C.

[Cam part 50A, contact surface 53A]
The cam portion 50A is a trapezoidal member extending in the front direction 8A and the rear direction 8B. As shown in FIG. 5, the rear direction 8B end is lower than the front direction 8A end at the end portion of the lower direction 7B. It has the inclined surface 50D located in the direction 7B. A contact surface 53A extends in the rear direction 8B from the rear direction 8B end of the inclined surface 50D. The contact surface 53A is perpendicular to the upward direction 7A and the downward direction 7B. As for the surface of the cam part 50 in the downward direction 7B, the contact surface 53A is located in the lowest direction 7B.

[First contact portion 53B, second contact portion 53C]
As shown in FIG. 5, the extending portion 50 </ b> C of the moving member 53 has a rib 53 </ b> D that extends in the front direction 8 </ b> A and the rear direction 8 </ b> B. As shown in FIG. 4, from the rib 53D, if it is an extension part 50C located in the left direction 9A, it protrudes in the left direction 9A, and if it is an extension part 50C located in the right direction 9B, it extends in the right direction 9B. Projecting columnar first contact portions 53B and second contact portions 53C are provided. The first contact portion 53B is disposed at a position in the front direction 8A from the center of the front direction 8A and the rear direction 8B in the extension portion 50C, and the second contact portion 53C is in the front direction 8A in the extension portion 50C. And it arrange | positions in the position of the back direction 8B from the center of the back direction 8B. The pivot shaft 54A of the lever member 54 is disposed between the first contact portion 53B and the second contact portion 53C in the front direction 8A and the rear direction 8B. That is, the first contact portion 53B is disposed in the pull-out direction D3 with respect to the lever member 54 in the mounting direction D4 and the pull-out direction D3 (for example, the front direction 8A and the rear direction 8B), and the second contact portion 53C is In the mounting direction D4 and the drawing direction D3, the lever member 54 is disposed in the mounting direction D4.

  As shown in FIG. 6A, the first contact portion 53B is in contact with the front surface 8A of the lever member 54 in the first state when the moving member 53 is located at the first position P4. It touches. As shown in FIG. 7A, the second contact portion 53C is in contact with the rear surface 8B of the lever member 54 in the first state when the moving member 53 is located at the second position P3. It touches. As described above, the lever member 54 is positioned in the first state by contacting the first contact portion 53B in a state where the moving member 53 is positioned at the first position P4. The lever member 54 is positioned in the first state by contacting the second contact portion 53C in a state where the moving member 53 is positioned at the second position P3. As shown in FIG. 6B, the first abutting portion 53B is moved to the lever member by the rotation of the angle θ1 in the first rotation direction D1 from the first state to the second state of the lever member 54. The moving member 53 is moved to the second position P3 by being pressed in the forward direction 8A by the surface of the forward direction 8A of 54. As shown in FIG. 7B, the second contact portion 53B is moved to the lever member by the rotation of the angle θ2 in the second rotation direction D2 from the first state to the third state of the lever member 54. The moving member 53 is moved to the first position P4 by being pressed in the rear direction 8B by the surface of the rear direction 8B of 54. The angle θ1 and the angle θ2 may be the same size or different sizes.

[Linked operation]
In the mounted state of the feeding tray 20 shown in FIG. 6A, the moving member 53 is located at the first position P4. In this state, the roller holder 85 (specifically, the contact shaft 85D, see FIG. 5) is not in contact with the contact surface 53A, and the pinch roller 61 is located at the contact position P11 in contact with the transport roller 60. To do. At this time, the conveyance roller pair 59 is in a nip state in which the recording paper 12 is nipped and can be conveyed in the conveyance direction 15. As shown in FIG. 6B, when the lever member 54 is rotated from the first state to the second state by the movement of the feeding tray 20 in the pull-out direction D3, the first contact is caused by the rotation. The contact portion 53B is pressed by the lever member 54 in the forward direction 8A. As a result, the moving member 53 moves in the forward direction 8A and moves to the second position P3. In the process, the contact shaft 85D of the roller holder 85 contacts the inclined surface 50D, and is guided to the inclined surface 50D and contacts the contact surface 53A as the moving member 53 moves. Accordingly, the pinch roller 61 moves against the urging force of the urging member 57 to the separation position P12 in the downward direction 7B and is separated from the transport roller 60. As a result, the conveyance roller pair 59 is released from the nip state and released from the nip state.

  In the pulled-out state of the feeding tray 20 shown in FIG. 7A, the moving member 53 is located at the second position P3. In this state, the roller holder 85 (specifically, the contact shaft 85D, see FIG. 5) is in contact with the contact surface 53A, and the pinch roller 61 is located at a separation position P12 that is separated from the transport roller 60. At this time, the conveyance roller pair 59 is in a released state in which the nip state is released. As shown in FIG. 7B, when the lever member 54 is rotated from the first state to the third state by the movement of the feeding tray 20 in the mounting direction D4, the second contact is caused by the rotation. The contact portion 53C is pressed backward 8B by the lever member 54. As a result, the moving member 53 moves in the backward direction 8B and moves to the first position P4. As a result, the roller holder 85 is not in contact with the contact surface 53A, and the pinch roller 61 is moved to the contact position P11 in the upward direction 7A by the urging force of the urging member 57. Abut. As a result, the conveyance roller pair 59 is in a nip state, and is in a state in which the recording paper 12 can be nipped and conveyed.

  As described above, the protruding portion 20A of the feeding tray 20 is provided on the feeding tray 20 so as to be able to contact the lever member 54 positioned in the first state between the mounted state and the pulled-out state. The lever member 54 is rotated from the first state to the second state when the 20 moves from the mounting position P1 to the drawing position P2, and the lever member when the feeding tray 20 moves from the drawing position P2 to the mounting position P1. 54 is rotated from the first state to the third state.

  As the lever member 54 rotates from the first state to the second state, the moving member 53 moves to the second position P3. As the lever member 54 rotates from the first state to the third state, the moving member 53 moves to the first position P4. Thus, the moving member 53 moves to the second position P3 and the first position P4 in conjunction with the change in state of the lever member 54.

  More specifically, the first contact portion 53B provided on the moving member 53 contacts the lever member 54 that rotates from the first state to the second state, and the moving member 53 is moved by the rotation of the lever member 54. Move to the second position P3. Further, the second contact portion 53C provided on the moving member 53 contacts the lever member 54 that rotates from the first state to the third state, and the lever member 54 rotates to move the moving member 53 to the first position. Move to P4.

[Effect of the embodiment]
According to the present embodiment, the lever member 54 is urged by the urging member 57 with the first state as the specified position. The feed tray 20 is in the first state both when it is moved from the mounted state (P1) to the pulled-out state (P2) and when it is moved from the pulled-out state (P2) to the mounted state (P1). Abut. The lever member 54 rotates freely from the first state in the first rotation direction D1 and in the second rotation direction D2, regardless of whether the conveyance roller pair 59 is in the nip state or in the nip release state. Move.

  For example, in the state where the feeding tray 20 is pulled out from the printer unit 11, when the conveyance roller pair 59 returns to the nip state due to a user's erroneous operation or the like, it is indicated by a two-dot chain line in FIG. Thus, the feeding tray 20 is located at the pulling position P2 (see FIG. 7A) in the forward direction 8A. In this state, when the feeding tray 20 is attached to the printer unit 11, the protruding portion 20 </ b> A contacts the lever member 54 in the first state. At this time, the lever member 54 can freely rotate from the first state to the second state. Accordingly, even in the above case, it is possible to prevent the feeding tray 20 from colliding with the lever member 54 and preventing the feeding tray 20 from being attached to the printer unit 11.

[Modification]
In the above-described embodiment, the case where the transport device is used for the ink jet recording apparatus as the image recording apparatus has been described. However, the conveyance device of the present invention can be used not only for an ink jet recording apparatus but also for other image recording apparatuses such as a laser printer. Further, the conveying device of the present invention is not limited to use in an image recording apparatus, and can be used in all devices that use sheets.

  In the above embodiment, the lever member 54 is urged to the first state by the urging member 57, but may be positioned to the first state by its own weight.

  In the above embodiment, the pinching member is constituted by the pinch roller 61, but the pinching member is not limited to a driven roller such as the pinch roller 61. For example, it may be a plate-shaped or rectangular parallelepiped pressing member having a pressing surface with a sufficiently small friction coefficient that presses the recording paper 12 toward a conveying roller such as the reverse roller 45.

  In the above embodiment, the driving roller such as the conveying roller 60 driven by the motor is the conveying roller. However, the present invention is not limited to this. For example, in a configuration in which the transport roller 60 is disposed in the downward direction 7B and the pinch roller 61 facing the transport roller 60 is disposed in the upward direction 7A, a driven roller such as the pinch roller 61 is used as the transport roller, and a drive roller such as the transport roller 60 is used. May be moved to a contact position where the conveying roller 60 contacts the pinch roller 61 and a spaced position where the conveying roller 60 is separated from the pinch roller 61 by the rotation of the lever member 54.

10: Multifunction machine 11: Printer section (image recording device)
12. Recording paper (sheet)
DESCRIPTION OF SYMBOLS 20 ... Feed tray 20A ... Protruding part 51 ... 1st frame 52 ... 2nd frame 53 ... Moving member 53A ... Contact surface 53B ... 1st contact part 53C ... 2nd contact part 54 ... Lever member 54C ... Energizing Member (first biasing member)
57 ... Biasing member (second biasing member)
59 ... Conveying roller pair 60 ... Conveying roller 61 ... Pinch roller 61A ... Rotating shaft 70 ... Blocking mechanism 85 ... Roller holder

Claims (11)

A transport roller;
A holding member that can hold the sheet between the conveying roller and a contact position that contacts the conveying roller and a separation position that is separated from the conveying roller; and
A tray that can support the sheet, can be mounted on the apparatus and pulled out from the apparatus, and is movable between a mounted state mounted on the apparatus and a pulled-out state pulled out from the apparatus;
It is provided so as to be rotatable about a rotation axis extending in a mounting direction when the tray is mounted on the device and a direction intersecting with a pulling direction when the tray is pulled out from the device. The second state rotated from the first state to the first rotation direction around the rotation axis by an angle θ1 of less than 180 ° and the first state opposite to the first rotation direction around the rotation axis. It is possible to take a third state rotated by an angle θ2 of less than 180 ° in the second rotation direction, wherein the first state is a specified position, and in the first state, the tray and the mounted state and When the tray is moved from the mounted state to the pulled-out state, the first state is rotated to the second state by the contact with the tray. The tray is When moving the mounted state, the lever member pivots to the third state from the first state by contact with the tray,
The holding member is moved to the separation position by the rotation of the lever member from the first state to the second state, and the rotation of the lever member from the first state to the third state is performed by the rotation of the lever member. An interlocking mechanism for moving the holding member to the contact position. The tray has a lever abutting portion capable of abutting on a lever member located in the first state,
The conveying device according to claim 1, wherein the lever contact portion is not in contact with the lever member when the tray is in the mounted state. A holding member that holds the holding member and is movable integrally with the holding member;
The above interlocking mechanism is
The holding member is abuttable, the clamping member is movable to a first position where the abutting position is located, and a second position where the clamping member is the spacing position, and the lever member is A moving member that moves to the first position by turning from the first state to the second state and moves to the second position by turning the lever member from the first state to the third state. Item 3. The transport apparatus according to Item 1 or 2.   The conveying apparatus according to any one of claims 1 to 3, further comprising a first urging member that urges the lever member to the first state. A second urging member that urges the clamping member toward the conveying roller;
The transport apparatus according to claim 3 or 4, wherein the moving member does not come into contact with the holding member at the first position. The moving member is
Movable to the first position and the second position along the mounting direction and the pull-out direction;
In the mounting direction and the pull-out direction, the lever member is disposed in the pull-out direction with respect to the lever member, and abuts on the lever member that rotates from the first state to the second state in the first rotation direction. A first contact portion that is capable of moving the moving member to the first position by rotation of the lever member;
In the mounting direction and the pull-out direction, the lever member is disposed in the mounting direction with respect to the lever member, and abuts on the lever member that rotates from the first state to the third state in the second rotation direction. 6. The transport device according to claim 3, further comprising: a second contact portion that moves the moving member to the second position by rotating the lever member. The lever member is
In the state where the moving member is located at the first position, the moving member is positioned in the first state by contacting the first contact portion, and the moving member is located at the second position. The conveying device according to claim 6, wherein the conveying device is positioned in the first state by abutting against the second abutting portion.   The transport apparatus according to claim 3, further comprising a first frame that movably supports the holding member and movably supports the moving member.   The transport apparatus according to claim 8, further comprising a second frame supported by the first frame and rotatably supporting the lever member.   The conveying device according to claim 1, wherein the clamping member is a roller. A transport apparatus according to any one of claims 1 to 10,
An image recording apparatus comprising: a recording unit that records an image on a sheet.

Images