Media conveying device and recording device

Abstract

This invention relates to a media conveying device and a recording device, solving the problems of complex door mechanisms, increased door weight, and difficulty in opening and closing the door. The media conveying device includes: a first roller for conveying media; a second roller; a first rotating shaft rotatably supporting the first roller; a displacement mechanism for displacing the first rotating shaft to a first position where the first and second rollers can clamp the media, and a second position where they are separated; and a door capable of opening and closing in a direction intersecting the first rotating shaft, and capable of rotating between an open position (open) and a closed position (closed) relative to the main body of the device. The door has an actuating part, and the displacement mechanism has an actuated part. When the door is closed, the actuating part contacts and presses the actuated part. When the door rotates from closed to open and the actuating part no longer presses the actuated part, the displacement mechanism displaces the first rotating shaft from the first position to the second position.

Description

Technical Field

[0001] This invention relates to a media conveying device and a recording device. Background Technology

[0002] As an example of prior art for such sheet conveying devices, the device described in Patent Document 1 can be cited. Patent Document 1 discloses a sheet conveying device in which an openable and closable door holds one roller of a conveying roller pair, and the main body of the device holds the other roller. When the door is opened, a locking mechanism linked thereto causes one roller to separate from the other, thereby releasing the pressing state of the conveying roller pair.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2004-269151

[0004] In the sheet conveying device of Patent Document 1, since the part that holds a roller moves integrally with the door, the mechanism on the door side becomes complicated, and the weight of the door increases, making it difficult to open and close the door. Summary of the Invention

[0005] To solve the above problems, the media conveying device according to the present invention is characterized by comprising: a first roller for conveying a medium; a second roller for clamping the medium together with the first roller; a first rotating shaft for supporting the first roller to be rotatable; a displacement mechanism for displacing the first rotating shaft to a first position where the first roller and the second roller can clamp the medium, and a second position where the first roller moves away from the second roller; a device body for supporting the displacement mechanism; and a door that can be opened and closed with a second rotating shaft extending in a direction intersecting the first rotating shaft as a rotation fulcrum, and can rotate between an open position and a closed position relative to the device body, wherein the door has an actuating part, the displacement mechanism has an actuated part, when the door is in the closed position, the actuating part contacts the actuated part, and the first rotating shaft is located in the first position; when the door is in the open position, the actuating part moves away from the actuated part, and the first rotating shaft is located in the second position.

[0006] Furthermore, the recording apparatus according to the present invention is characterized by comprising: the aforementioned medium conveying device; and a recording unit for recording the medium conveyed by the medium conveying device. Attached Figure Description

[0007] Figure 1 This is a schematic perspective view of the recording device according to Embodiment 1.

[0008] Figure 2 This is a top view of the main parts of Implementation Method 1.

[0009] Figure 3 These are partial top views (A) of the main parts of the displacement mechanism of the medium conveying unit in Embodiment 1 and top views (B) of the sliding component.

[0010] Figure 4 This is a perspective view of a portion of the main parts of the displacement mechanism in Embodiment 1.

[0011] Figure 5 This is a top view of a portion of the main part of the displacement mechanism in Embodiment 1.

[0012] Figure 6 This is a perspective view of a portion of the main parts of the displacement mechanism in Embodiment 1.

[0013] Figure 7 This is a top view of a portion of the main part of the displacement mechanism in Embodiment 1.

[0014] Figure 8 This is a perspective view of a unit of the displacement mechanism according to Embodiment 1.

[0015] Explanation of reference numerals in the attached figures

[0016] 1…Media conveying device; 2…Media box; 3…Recording unit; 4…Conveying path; 5…Main body of the device; 6…Discharge unit; 7…Door; 8…Second rotating shaft; 9…First roller; 10…Free end; 11…Second roller; 12…Path forming component; 13…First rotating shaft; 14…Path forming component; 15…Displacement mechanism; 16…Shaft; 17…Actuating part; 18…Contacting part; 19…Actuated part; 20…Arrow; 21…One end; 22…Contacting part; 23…First shaft; 24…Arrow; 25…First cam; 26…The… 1. Sliding protrusion; 27…the other end; 28…second sliding protrusion; 29…second shaft; 30…frame; 31…second cam; 32…window frame component; 33…first contact part; 35…second contact part; 37…first rotational force application component; 39…second rotational force application component; 41…sliding component; 43…first cam action part; 45…second cam action part; 47…face; 51…first rotation direction; 53…second rotation direction; 55…unit; 100…recording device; P1…first position; P2…second position; S…medium. Detailed Implementation

[0017] The present invention will now be described in general terms.

[0018] To address the aforementioned problems, the media conveying device according to the first aspect of the present invention is characterized by comprising: a first roller for conveying a medium; a second roller for clamping the medium together with the first roller; a first rotating shaft for supporting the first roller to be rotatable; a displacement mechanism for displacing the first rotating shaft to a first position where the first roller and the second roller can clamp the medium, and a second position where the first roller is away from the second roller; a device body for supporting the displacement mechanism; and a door capable of opening and closing with a second rotating shaft extending in a direction intersecting the first rotating shaft as a rotation fulcrum, and capable of rotating between an open position and a closed position relative to the device body. Furthermore, the door has an actuating part, and the displacement mechanism has an actuated part. When the door is in the closed position, the actuating part contacts and presses the actuated part. When the door rotates from the closed position toward the open position and the actuating part no longer presses the actuated part, the displacement mechanism displaces the first rotating shaft from the first position toward the second position.

[0019] According to this method, the door has an actuating part, and the displacement mechanism has an actuated part. When the door is in the closed position, the actuating part contacts and presses the actuated part. When the door rotates from the closed position to the open position and the actuating part no longer presses the actuated part, the displacement mechanism displaces the first rotation axis from the first position to the second position. Therefore, since only the actuating part is provided on the door side, the mechanism on the door side does not become complex, the weight is hardly increased, and the possibility of difficulty in opening and closing the door is relatively small.

[0020] The medium conveying device according to the second aspect of the present invention is characterized in that, in the first aspect, the displacement mechanism includes: a first cam disposed at one end of the first rotating shaft and rotating about the first shaft; a second cam disposed at the other end of the first rotating shaft and rotating about the second shaft; a first contact portion rotating integrally with the first cam about the first shaft and capable of contacting one end of the first rotating shaft; and a second contact portion rotating integrally with the second cam about the second shaft and capable of contacting the other end of the first rotating shaft. Furthermore, when the actuating portion no longer presses the actuated portion, the first cam rotates to contact the first contact portion with one end of the first rotating shaft, thereby moving that one end of the first rotating shaft; the second cam rotates to contact the second contact portion with the other end of the first rotating shaft, thereby moving the other end of the first rotating shaft, and thus displacing the first rotating shaft from the first position to the second position.

[0021] According to this method, the structure that displaces the first rotating shaft as a whole from the first position to the second position is composed of a cam structure formed by the first cam and the first contact portion disposed on one end of the first rotating shaft, and the second cam and the second contact portion disposed on the other end of the first rotating shaft. Therefore, with this simple structure of a pair of cams, one end and the other end of the first rotating shaft can be displaced from the first position to the second position, thereby causing the first roller to be in a state of disengagement from the second roller.

[0022] The medium conveying device according to the third aspect of the present invention is characterized in that, in the second aspect, the first cam and the second cam are respectively subjected to rotational force by a first rotational force applying component and a second rotational force applying component, and when the actuating part no longer presses the actuated part, the first cam and the second cam rotate by the rotational force, causing the first rotating shaft to be displaced from the first position to the second position.

[0023] According to this method, when the actuating part no longer presses the actuated part, the first cam and the second cam rotate under the rotational force, causing the first rotating shaft to shift from the first position to the second position. Therefore, when the door is opened, the rotational force of the component applying the rotational force automatically causes the first roller to move away from the second roller.

[0024] The media conveying device according to the fourth aspect of the present invention is characterized in that, in the third aspect, the displacement mechanism includes: a sliding member on which the actuated part is mounted; a first cam actuating part disposed on the sliding member to rotate the first cam; and a second cam actuating part to rotate the second cam. When the door is closed, the actuating part presses the actuated part, causing the sliding member to slide. The first cam actuating part causes the first cam to rotate against the rotational force of the first rotational force applying member, and simultaneously, the second cam actuating part causes the second cam to rotate against the rotational force of the second rotational force applying member, thereby positioning the first roller at the first position.

[0025] According to this method, when the door is closed, the sliding member slides, and the first cam actuating part rotates against the rotational force of the first rotational force applying member. Simultaneously, the second cam actuating part rotates against the rotational force of the second rotational force applying member, thereby positioning the first roller at the first position. Thus, the first rotating shaft as a whole can be displaced from the second position to the first position using this simple structure of sliding the sliding member. That is, the first roller can be moved to a position where it can clamp the medium between itself and the second roller. Furthermore, since the sliding member does not rotate, miniaturization can be achieved compared to rotating structures.

[0026] The media conveying device according to the fifth aspect of the present invention is characterized in that, in the fourth aspect, the sliding member is plate-shaped, and the plate-shaped surface of the sliding member is displaced from the first position to the second position along the first rotation axis.

[0027] According to this method, the surface of the plate-shaped sliding member is arranged along the direction in which it is displaced from the first position to the second position along the first rotation axis. Therefore, compared to a structure arranged in a direction that does not involve displacement along the first rotation axis, miniaturization can be achieved in the direction intersecting the displacement direction.

[0028] The medium conveying device according to the sixth aspect of the present invention is characterized in that, in the fourth or fifth aspect, the sliding member slides axially along the first rotation axis.

[0029] According to this method, since the sliding component slides along the axial direction of the first rotating shaft, the amount of movement of the first rotating shaft can be ensured, and miniaturization can be achieved.

[0030] The medium conveying device according to the seventh aspect of the present invention is characterized in that, in any one of the third to sixth aspects, when the first rotating shaft is displaced from the first position to the second position, the first cam rotates in a first rotation direction, while the second cam rotates in a second rotation direction opposite to the first rotation direction.

[0031] According to this method, when the first rotating shaft is displaced from the first position to the second position, the first cam rotates in a first rotation direction, while the second cam rotates in a second rotation direction opposite to the first rotation direction. That is, since the first rotating shaft is displaced due to clockwise rotation in one direction and counterclockwise rotation in the other, the rotational forces applied to the first rotating shaft are opposite in direction and cancel each other out, enabling the first rotating shaft to move stably and well in the displacement direction.

[0032] The media conveying device according to the eighth aspect of the present invention is characterized in that, in the seventh aspect, the first rotating shaft having the first roller, the sliding member having the actuated portion, and the displacement mechanism having the first cam, the second cam, the first contact portion, and the second contact portion are assembled into a single unit via a frame.

[0033] According to this method, the first rotating shaft, the sliding component, and the displacement mechanism having the first cam, the second cam, the first contact portion, and the second contact portion are assembled into a single unit. This simplifies the installation of the device body and facilitates miniaturization through unitization.

[0034] The media conveying device according to the ninth aspect of the present invention is characterized in that, in any one of the first to eighth aspects, the door is located on the side of the device body, the second rotating shaft is located on the rear side of the device body, the front side becomes a free end and is open and closed, the displacement mechanism is arranged along the front-rear direction along the door in the closed state, and the acted part is located on the rear side of the device body.

[0035] According to this method, since the affected part is located at the rear of the device body, the likelihood of a user accidentally touching the affected part is low when the door is open. Furthermore, it is easy to achieve miniaturization.

[0036] Furthermore, the recording apparatus according to the tenth aspect of the present invention is characterized in that it comprises: a medium conveying device of any of the above-described aspects; and a recording unit for recording the medium conveyed by the medium conveying device.

[0037] According to this method, as a recording device, the same effect as the methods described above and below can be obtained.

[0038] Implementation Method 1

[0039] The following is based on Figures 1 to 8 This paper will specifically describe the media transport device 1 and the recording device 100 equipped with the media transport device 1 according to Embodiment 1 of the present invention. Here, the recording device 100 will be described as an inkjet printer.

[0040] In the following description, as shown in the figures, the three mutually orthogonal axes are designated as the X-axis, Y-axis, and Z-axis. The Z-axis direction corresponds to the vertical direction, i.e., the direction of gravity. The X-axis and Y-axis directions correspond to the horizontal direction. In the figures, the arrows indicating the three axes (X, Y, Z) represent the positive (+) direction, and their opposite directions represent the negative (-) direction. Here, the +Y direction represents the front of the recording device 100, and the -Y direction represents the rear of the recording device.

[0041] like Figure 1 As shown, in this embodiment, the recording device 100 includes a line-type recording head as a recording unit 3, which ejects ink onto the medium S conveyed by the medium transport device 1 to perform recording. Figure 1 In the figure, reference numeral 2 indicates the medium box, reference numeral 4 indicates the conveying path, and reference numeral 6 indicates the discharge section.

[0042] The medium S contained in the medium cartridge 2 is conveyed along the conveying path 4, passing through the recording execution area of ​​the recording unit 3 located within the device body 5. The medium S recorded by the recording unit 3 is conveyed along the conveying path 4 and discharged to the discharge unit 6. The illustration of the conveying path 6 located within the device body 5 is omitted here.

[0043] A door 7 is provided on the main body 5 of the device. In this embodiment, the door 7 is located on the right side of the main body 5, that is, the side in the -X direction, and has a second rotation axis 8 that serves as a rotation fulcrum on the rear side (-Y direction) of the main body 5. Figure 2 The front side becomes the free end 10 and can be opened and closed. In the event that the medium S is blocked in the conveying path 4, the blockage can be handled by opening the door 7.

[0044] A path-forming component 12 constituting the conveying path 4 is provided on the inner surface of the door 7. When the door 7 is closed, the path-forming component 12 is opposite to the path-forming component 14 on the side of the device body 5 to form the conveying path 4.

[0045] like Figure 2 and Figure 3 As shown in (A), the medium conveying device 1 according to this embodiment includes: a first roller 9 for conveying medium S; a second roller 11 for holding medium S together with the first roller 9; a first rotating shaft 13 for supporting the first roller 9 so that it can rotate; and a displacement mechanism 15 for displacing the first rotating shaft 13 to a first position P1 where the first roller 9 and the second roller 11 can hold medium S. Figure 7 ), and the second position P2 where the first roller 9 leaves the second roller 11 ( Figure 3 (A) Figure 5 The device includes a main body 5 and a support displacement mechanism 15. Furthermore, the medium conveying device 1 includes a door 7. The door 7 can be opened and closed with a second rotating shaft 8 extending in a direction intersecting the first rotating shaft 13 as a pivot point, and can rotate between an open position and a closed position relative to the main body 5. It should be noted that... Figure 2 In this document, for the displacement mechanism section 15, from the viewpoint of avoiding the complexity of the accompanying drawings, the sliding member 41, which is a component of the displacement mechanism section 15 and will be described later, is described, and other descriptions are omitted.

[0046] Furthermore, a functional part 17 is provided at one location in door 7. Figure 2 The displacement mechanism 15 has an actuated part 19 at one location. When the door 7 is in the closed position, the actuating part 17 contacts and presses the actuated part 19. It should be noted that... Figure 2 This indicates that the actuating part 17 is not in contact with the acted part 19, i.e., it is not pressed. In this embodiment, the displacement mechanism part 15 is arranged along the front-to-back direction along the closed door 7, and the acted part 19 is located at the rear side of the device body 5.

[0047] The displacement mechanism 15 is configured such that when the door 7 rotates from the closed position toward the open position and the actuating part 17 no longer presses the actuated part 19, the first rotation axis 13 is displaced from the first position P1 toward the second position P2.

[0048] Second roller

[0049] like Figure 3 As shown in (A), in this embodiment, the second roller 11 is a drive roller that rotates by transmitting driving force from a drive source (not shown). Here, the second roller 11 is composed of a toothed roller with multiple teeth formed on its outer peripheral surface.

[0050] The second roller 11 is supported on the shaft 16 in a manner that allows it to rotate integrally with the shaft 16. The shaft 16 is rotatably mounted on the main body 5 of the device.

[0051] First roller

[0052] like Figure 3 As shown in (A), in this embodiment, the first roller 9 is a driven roller that rotates along with the second roller 11. The second roller 11 and the first roller 9 hold the medium S and transport it along the transport path 4.

[0053] The first rotating shaft 13 of the first roller 9 is mounted on the main body 5 in such a way that it can move as a whole toward and away from the second roller 11. Here, the first rotating shaft 13 is configured to be guided by a guide member (not shown) and can be displaced between a first position P1 and a second position P2.

[0054] Displacement mechanism

[0055] use Figures 3 to 7 Explain the structure of the displacement mechanism 15.

[0056] In this embodiment, the displacement mechanism 15 includes: a first cam 25 disposed at one end 21 of the first rotation shaft 13 and rotating about the first shaft 23; and a second cam 31 disposed at the other end 27 of the first rotation shaft 13 and rotating about the second shaft 29. Furthermore, the displacement mechanism 15 includes: a first contact portion 33 that rotates integrally with the first cam 25 about the first shaft 23 and is capable of contacting one end 21 of the first rotation shaft 13; and a second contact portion 35 that rotates integrally with the second cam 31 about the second shaft 29 and is capable of contacting the other end 27 of the first rotation shaft 13.

[0057] In this embodiment, the first cam 25 and the first contact portion 33, as well as the second cam 31 and the second contact portion 35, are formed by integral molding of resin material.

[0058] In the displacement mechanism 15, when the door 7 is opened and the actuating part 17 no longer presses the actuated part 19, the first cam 25 rotates and causes the first contact part 33 to contact one end 21 of the first rotating shaft 13, thereby moving one end 21 of the first rotating shaft 13. At the same time, the second cam 31 rotates and causes the second contact part 35 to contact the other end 27 of the first rotating shaft 13, thereby moving the other end 27 of the first rotating shaft 13.

[0059] Figure 5 This indicates the state where the first rotation axis 13 has moved to the second position P2. Specifically, Figure 5 (A) is the state in which the contact action part 18 of the first contact part 33 contacts one end 21 of the first rotating shaft 13 and moves in the direction of arrow 20 by rotating the first cam 25, thus moving to the second position P2. Additionally, Figure 5 (B) is the state in which the second contact part 35's contact action part 22 contacts one end 21 of the first rotating shaft 13 and moves in the direction of arrow 20 by rotating the second cam 31, thus moving to the second position P2.

[0060] Figure 7 This indicates the state where the first rotation axis 13 has moved to the first position P1. Specifically, Figure 7 (A) is a state in which the first cam 25 is rotated, causing the contact action portion 18 of the first contact portion 33 to move in the direction of arrow 24, which moves away from one end 21 of the first rotating shaft 13, thereby moving one end 21 of the first rotating shaft 13 to the first position P1. Additionally, Figure 7 (B) is a state in which the second cam 31 is rotated and the contact action part 22 of the second contact part 35 is moved in the direction of the arrow 24 that leaves the other end 27 of the first rotating shaft 13, thereby moving the other end 27 of the first rotating shaft 13 to the first position P1.

[0061] Through this movement, the first rotation axis 13 moves from the first position P1 ( Figure 7 ) Displaced to the second position P2( Figure 5 That is, when the first rotating shaft 13 is in the second position P2, the first roller 9 and the second roller 11 are in a disengaged state. In this state, it is possible to handle the situation where the medium S is blocked in the conveying path 4.

[0062] In addition, such as Figure 3 , Figure 5 , Figure 7 As shown, in this embodiment, the first cam 25 and the second cam 31 are respectively subjected to rotational forces by the first rotational force applying member 37 and the second rotational force applying member 39. Furthermore, when the actuating part 17 no longer presses against the actuated part 19, the first cam 25 and the second cam 31 are configured to rotate by the rotational force, causing the first rotational shaft 13 to shift from the first position P1 to the second position P2. That is, the first cam 25 and the second cam 31 receive a rotational force from the first rotational force applying member 37 and the second rotational force applying member 39 in a direction that moves the first rotational shaft 13 in the direction (arrow 20) that causes the first roller 9 to move away from the clamping position with the second roller 11.

[0063] Here, both the first rotational force applying component 37 and the second rotational force applying component 39 are composed of torsion helical springs.

[0064] In addition, such as Figure 3 (A)(B) Figure 4 , Figure 6 As shown, in this embodiment, the displacement mechanism 15 includes: a sliding member 41 on which the actuated portion 19 is mounted; a first cam actuation portion 43 disposed on the sliding member 41 to rotate the first cam 25; and a second cam actuation portion 45 to rotate the second cam 31. The first cam 25 has a first sliding protrusion 26 that abuts against and slides against the inclined edge of the first cam actuation portion 43. The second cam 31 has a second sliding protrusion 28 that abuts against and slides against the inclined edge of the second cam actuation portion 45. The second sliding protrusion 28 is provided using a portion of the actuated portion 19.

[0065] Here, the first rotating shaft 13 is subjected to a pressing force from the first roller 9 in the direction of moving toward the clamping position of the second roller 11 via a pressing spring (not shown in the figure).

[0066] When door 7 is closed, the actuating part 17 presses against the actuated part 19, causing the sliding member 41 to slide along the -Y direction. This movement causes the inclined edge of the first cam actuating part 43 to rotate against the rotational force of the first rotational force applying member 37 via the first sliding protrusion 26. Simultaneously, the inclined edge of the second cam actuating part 45 causes the second cam 31 to rotate against the rotational force of the second rotational force applying member 39 via the second sliding protrusion 28. As a result, the first roller 9 is moved to the first position P1 by the force of the pressing spring, enabling it to hold the medium S between itself and the drive roller 11.

[0067] In addition, such as Figure 3 (A)(B) Figure 4 , Figure 6 As shown, in this embodiment, the sliding member 41 is plate-shaped. Furthermore, the plate-shaped surface 47 of the sliding member 41 is oriented in the direction of displacement from the first position P1 to the second position P2 along the first rotation axis 13. In other words, the plate-shaped surface 47 is oriented in the direction of displacement along the first rotation axis 13. That is, it is oriented along the XY plane intersecting the Z-axis direction.

[0068] In the figures, reference numeral 30 indicates a frame on which a first cam 25, a second cam 31, a sliding component 41, etc., are mounted.

[0069] In addition, the sliding member 41 is provided on the frame 30 in such a way that it can slide along the axial direction (Y-axis direction) of the first rotation axis 13.

[0070] Variations

[0071] For the sliding component 41, the structure of sliding movement along the axial direction (Y-axis direction) of the first rotation axis 13 can be changed, and a structure of sliding movement along the X-axis direction intersecting the axial direction (Y-axis direction) of the first rotation axis 13 can be adopted. In this case, by changing the specific structure of related components such as the first cam 25, the second cam 31, the first cam actuating part 43, and the second cam actuating part 45 according to the movement in the X-axis direction, the same function can be achieved.

[0072] In addition, such as Figure 5 As shown in (A) and (B), in this embodiment, when the first rotating shaft 13 is displaced from the first position P1 to the second position P2, the first cam 25 rotates counterclockwise, i.e., in the first rotation direction 51, while the second cam 31 rotates clockwise, i.e., in the second rotation direction 53, which is opposite to the first rotation direction 51.

[0073] like Figure 7As shown in (A) and (B), when the first rotating shaft 13 is displaced from the second position P2 to the first position P1, the first cam 25 rotates clockwise, i.e., in the second rotation direction 53, while the second cam 31 rotates counterclockwise, i.e., in the first rotation direction 51, which is opposite to the second rotation direction 53.

[0074] In addition, such as Figure 8 As shown, in this embodiment, a first rotating shaft 13 having a first roller 9, a sliding member 41 having an acted portion 19, and a displacement mechanism 15 having a first cam 25, a second cam 31, a first contact portion 33, and a second contact portion 35 are assembled via a frame 30 and a window frame member 32 to form a single unit 55.

[0075] With the first roller 9 exposed from each window 34, the window frame component 55 is fastened to the frame 30 by screws 36.

[0076] Explanation of the effects of the implementation method

[0077] (1) According to this embodiment, the door 7 has an actuating part 17, and the displacement mechanism 15 has an actuated part 19. When the door 7 is in the closed position, the actuating part 17 contacts and presses the actuated part 19. When the door 7 rotates from the closed position to the open position and the actuating part 17 no longer presses the actuated part 19, the displacement mechanism 15 moves the first rotation axis 13 from the first position P1 to the second position P2. Therefore, since only the actuating part 17 is provided on the door 7 side, the mechanism on the door 7 side does not become complicated, the weight is hardly increased, and the possibility of difficulty in opening and closing the door 7 is small.

[0078] (2) Furthermore, according to this embodiment, the structure that moves the first rotating shaft 13 as a whole from the first position P1 to the second position P2 is composed of a cam structure formed by a first cam 25 and a first contact portion 33 provided on one end 21 side of the first rotating shaft 13, and a second cam 31 and a second contact portion 35 provided on the other end 27 side of the first rotating shaft 13. Therefore, with this simple structure of a pair of cams, one end 21 and the other end 27 of the first rotating shaft 13 can be moved simultaneously from the first position P1 to the second position P2, thereby causing the first roller 9 to be in a state of disengagement from the second roller 11.

[0079] (3) Furthermore, according to this embodiment, when the actuating part 17 no longer presses the actuated part 19, the first cam 25 and the second cam 31 rotate by the rotational force, causing the first rotating shaft 13 to move from the first position P1 to the second position P2. Thus, when the door 7 is opened, the rotational force of the rotational force applying components 37 and 39 can automatically cause the first roller 9 to move away from the second roller 11.

[0080] (4) Furthermore, according to this embodiment, when the door 7 is closed, the sliding member 41 slides, the first cam actuating part 43 causes the first cam 25 to rotate against the rotational force of the first rotational force applying part 37, and at the same time, the second cam actuating part 45 causes the second cam 31 to rotate against the rotational force of the second rotational force applying part 39, thereby placing the first roller 9 in the first position P1. Thus, the first rotating shaft 13 can be displaced from the second position P2 to the first position P1 by means of this simple structure of sliding the sliding member 41. That is, the first roller 9 can be moved to a position where the medium S can be held between it and the second roller 11. In addition, since the sliding member 41 does not rotate, miniaturization can be achieved compared to a rotating structure.

[0081] (5) Furthermore, according to this embodiment, the surface 47 of the plate-shaped sliding member 41 is configured in the direction in which it is displaced from the first position P1 to the second position P2 along the first rotation axis 13. As a result, compared with a structure that is not configured in the direction in which the displacement occurs, miniaturization in the direction intersecting the direction of the displacement can be achieved.

[0082] (6) In addition, according to this embodiment, since the sliding member 41 slides along the axial direction of the first rotating shaft 13, the amount of movement of the first rotating shaft 13 can be ensured and miniaturization can be achieved.

[0083] (7) Furthermore, according to this embodiment, when the first rotating shaft 13 is displaced from the first position P1 to the second position P2, the first cam 25 rotates in the first rotation direction 51, while the second cam 31 rotates in the second rotation direction 53, which is opposite to the first rotation direction 51. That is, since the first rotating shaft 13 is displaced by rotating clockwise in one direction and counterclockwise in the other, the rotational forces applied to the first rotating shaft 13 are opposite in direction and cancel each other out, enabling the first rotating shaft 13 to move stably and well in the displacement direction.

[0084] (8) Furthermore, according to this embodiment, the first rotating shaft 13, the sliding member 41, and the displacement mechanism 15 having the first cam 25, the second cam 31, the first contact portion 33, and the second contact portion 35 are assembled into a single unit 55. As a result, the installation of the device body 5 becomes easier, and miniaturization becomes easier through unitization.

[0085] (9) In addition, according to this embodiment, since the affected part 19 is located at the rear of the device body 5, the possibility of the user accidentally touching the affected part 19 when the door 7 is open is small. In addition, it is easy to achieve miniaturization.

[0086] Other implementation methods

[0087] The medium conveying device and recording device involved in this invention are based on the structure of the embodiments described above, but of course, some structural changes or omissions can be made without departing from the spirit of the invention.

Claims

1. A media transport apparatus, characterized by, have: The first roller conveys the medium; The second roller, together with the first roller, holds the medium; A first rotating shaft supports the first roller so that it can rotate; The displacement mechanism displaces the first rotating shaft to a first position where the first roller and the second roller can clamp the medium, and to a second position where the first roller moves away from the second roller. The main body of the device supports the displacement mechanism. as well as The door is capable of opening and closing with a second rotation axis extending in a direction intersecting the first rotation axis as its rotation fulcrum, and is capable of rotating between an open position and a closed position relative to the main body of the device. The door has a functional part. The displacement mechanism includes an acted part. When the door is in the closed position, the actuating part is in contact with the actuated part, and the first rotating shaft is located in the first position. When the door is in the open position, the actuating part and the actuated part are separated, and the first rotating axis is in the second position. The displacement mechanism includes: A first cam is disposed at one end of the first rotating shaft and rotates around the first shaft; The second cam is located at the other end of the first rotating shaft and rotates around the second shaft. The first contact portion rotates integrally with the first cam around the first axis and is capable of contacting one end of the first rotating shaft; and The second contact portion rotates integrally with the second cam around the second axis and is capable of contacting the other end of the first rotating shaft. When the actuating part stops pressing the actuated part, the first cam rotates to make the first contact part contact one end of the first rotating shaft, thereby moving one end of the first rotating shaft. The second cam rotates to make the second contact part contact the other end of the first rotating shaft, thereby moving the other end of the first rotating shaft, and thus displacing the first rotating shaft from the first position to the second position.

2. The medium conveying device according to claim 1, characterized in that, When the door rotates from the closed position toward the open position and the actuating part no longer presses the actuated part, the displacement mechanism displaces the first rotation axis from the first position toward the second position.

3. The medium conveying device according to claim 1, characterized in that, The first cam and the second cam are respectively subjected to rotational forces by a first rotational force applying component and a second rotational force applying component. When the actuating part stops pressing the actuated part, the first cam and the second cam rotate by the rotational force, causing the first rotating shaft to be displaced from the first position to the second position.

4. The medium conveying device according to claim 3, characterized in that, The displacement mechanism includes: A sliding component, on which the applied part is mounted; The first cam actuating part is disposed on the sliding member, causing the first cam to rotate; and The second cam's actuating part causes the second cam to rotate. When the door is closed, the actuating part presses the actuated part, causing the sliding member to slide. The first cam actuating part causes the first cam to rotate against the rotational force of the first rotational force applying member, while the second cam actuating part causes the second cam to rotate against the rotational force of the second rotational force applying member, thereby placing the first roller in the first position.

5. The medium conveying device according to claim 4, characterized in that, The sliding component is plate-shaped. The plate-like surface of the sliding component is displaced from the first position to the second position along the first rotation axis.

6. The medium conveying device according to claim 4, characterized in that, The sliding component slides along the axial direction of the first rotation axis.

7. The medium conveying device according to claim 4, characterized in that, When the first rotating shaft is displaced from the first position to the second position, the first cam rotates in the first rotation direction, while the second cam rotates in the second rotation direction, which is opposite to the first rotation direction.

8. The medium conveying device according to claim 7, characterized in that, The first rotating shaft having the first roller, the sliding member having the actuated portion, and the displacement mechanism having the first cam, the second cam, the first contact portion, and the second contact portion are assembled via a frame to form a single unit.

9. The medium conveying device according to any one of claims 1 to 8, characterized in that, The door is located on the side of the main body of the device, centered on the second rotation axis located on the rear side of the main body of the device, with the front side of the door being a free end that can be opened and closed. The displacement mechanism is arranged along the front-to-back direction of the door when it is closed. The affected part is located on the rear side of the main body of the device.

10. A recording apparatus characterized by comprising: have: The medium conveying device according to any one of claims 1 to 9; and The recording unit records the medium transported by the medium transport device.

11. A media transport apparatus, characterized by, have: The first roller conveys the medium; The second roller, together with the first roller, holds the medium; A first rotating shaft supports the first roller so that it can rotate; The displacement mechanism displaces the first rotating shaft to a first position where the first roller and the second roller can clamp the medium, and to a second position where the first roller moves away from the second roller. The main body of the device supports the displacement mechanism. as well as The door is capable of opening and closing with a second rotation axis extending in a direction intersecting the first rotation axis as its rotation fulcrum, and is capable of rotating between an open position and a closed position relative to the main body of the device. The door has a functional part. The displacement mechanism includes an acted part. When the door is in the closed position, the actuating part contacts and presses against the actuated part. When the door rotates from the closed position toward the open position and the actuating part no longer presses against the actuated part, the displacement mechanism displaces the first rotation axis from the first position toward the second position. The displacement mechanism includes: A first cam is disposed at one end of the first rotating shaft and rotates around the first shaft; The second cam is located at the other end of the first rotating shaft and rotates around the second shaft. The first contact portion rotates integrally with the first cam around the first axis and is capable of contacting one end of the first rotating shaft; and The second contact portion rotates integrally with the second cam around the second axis and is capable of contacting the other end of the first rotating shaft. When the actuating part stops pressing the actuated part, the first cam rotates to make the first contact part contact one end of the first rotating shaft, thereby moving one end of the first rotating shaft. The second cam rotates to make the second contact part contact the other end of the first rotating shaft, thereby moving the other end of the first rotating shaft, and thus displacing the first rotating shaft from the first position to the second position.

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