CN202717395U - Sheet supporting device - Google Patents

Abstract

Provided is a sheet support device capable of reducing sound generated due to sliding contact between a tray and a support member that slidably supports the tray. The sheet support device includes: a support member; and a tray supported by the support member in a manner capable of sliding along a first direction, and the sheet is placed on the tray, and in the sheet support device, one of the support member and the tray has a pair of Abutting surfaces, a pair of abutting surfaces extend along the first direction, and are separated from each other in a second direction perpendicular to the first direction, and the other of the supporting member and the tray has: a pair of abutting portions, 2 directions respectively facing and abutting against a pair of abutting surfaces; and a pair of elastic pieces, respectively pressing the abutting parts to each abutting surface, having a separating part on the abutting surface, and the separating part is arranged in the following manner: on the tray When sliding in the first direction, the abutting portion and the abutting surface are alternately repeatedly abutted and separated.

Description

Sheet support device

technical field

The utility model relates to a sheet material supporting device, which comprises a pallet supporting the sheet material and a supporting part for slidingly supporting the pallet. the

Background technique

There are known image recording devices and scanners that have a paper feed cassette that allows a slide tray to support sheets. The sheet feeding cassette includes a tray for supporting sheets, and a support member for slidably supporting the tray. the

In this sheet feeding cassette, there is a possibility that a sliding contact sound may be generated due to sliding contact between the tray and the support member during sliding. the

Utility model content

Therefore, an object of the present invention is to provide a device capable of reducing the sound generated by sliding contact between a tray and a support member that slidably supports the tray. the

The sheet material supporting device related to the utility model is characterized in that it includes: a support member (60); Placed on the tray (70), in the sheet support device, any one of the support member (60) and the tray (70) has a pair of abutment surfaces (84A, 85A), and the pair of abutment surfaces (84A, 85A) extend along the first direction (8) and are separated from each other in the second direction (9) perpendicular to the first direction (8), the support member (60) and the tray (70) The other one has: a pair of abutting portions (76, 77, 78, 79, 105), respectively facing and abutting against the pair of abutting surfaces (84A, 85A) in the second direction (9); and a pair of elastic pieces (74, 75), press the above-mentioned abutment parts (76, 77, 78, 79, 105) to each of the above-mentioned abutment surfaces (84A, 85A), respectively, and press the above-mentioned abutment surfaces (84A, 85A) There are separating parts (90, 106) on the top, and the above-mentioned separating parts (90, 106) are set in the following manner: when the above-mentioned tray (70) slides along the above-mentioned first direction (8), the above-mentioned abutting parts (76, 77, 78, 79, 105) and the above-mentioned contact surfaces (84A, 85A) alternately repeatedly abut and separate. the

In addition, it is preferable that the pair of abutment surfaces (84A, 85A) are respectively flat, and that the separation portions (90, 106) respectively protrude from the abutment surfaces (84A, 85A) and extend in the first direction (8). The plurality of protruding parts (90, 95, 96, 97) arranged separately from each other, when the above-mentioned tray (70) slides along the above-mentioned first direction (8), the above-mentioned protruding parts (90, 95, 96, 97) and the above-mentioned The elastic pieces (74, 75) abut to make the elastic pieces (74, 75) elastic in the direction of separating the abutting parts (76, 77, 78, 79, 105) from the abutting surfaces (84A, 85A) out of shape. the

In addition, it is preferable that the plurality of protrusions (90, 95, 96, 97) are provided on the abutment surface ( 84A, 85A) of the entire area. the

In addition, it is preferable that both the above-mentioned support member (60) and the above-mentioned tray (70) are in the shape of a tray for placing sheets, and the posture of the above-mentioned tray (70) is changed to be accommodated in the above-mentioned support member (60) by sliding along the above-mentioned first direction (8). ) in the first posture and the second posture exposed from the above-mentioned support member (60), on the above-mentioned abutment surface (84A, 85A) is provided with: a first concave portion (89), and the posture of the above-mentioned tray (70) is During the above-mentioned first posture, the above-mentioned abutting portion (76, 77, 78, 79, 105) fits into the first recess (89); and the second recess (88), the posture of the above-mentioned tray (70) is the above-mentioned second In the posture, the above-mentioned contact parts (76, 77, 78, 79, 105) fit into the second concave part (88). the

In addition, it is preferable that the pair of abutting surfaces (84A) are respectively curved surfaces with smooth continuous concavities and convexities along the first direction (8), and the separation part (106) is in contact with the abutting surface in the first direction (8). The part (105) is separated from the elastic piece (74), and when the tray (70) slides in the first direction (8), the part (106) and the convex part (84A) of the contact surface (84A) 84B) to elastically deform the elastic piece (74) in a direction to separate the contact portion (105) from the contact surface (84A). the

In addition, it is preferable that the sheet supporting device according to the present invention is characterized in that it includes: a supporting member (60); , the sheet is placed on the tray (70), and in the sheet support device, one of the support member (60) and the tray (70) has an abutment surface extending along the first direction (8) ( 84A, 85A), the other of the above-mentioned supporting member (60) and the above-mentioned tray (70) has: In the second direction (9), it faces and abuts against the above-mentioned abutment surface (84A, 85A); and the elastic piece (74, 75) presses the above-mentioned abutment portion (76, 77) toward the above-mentioned abutment surface (84A, 85A). , 78, 79, 105), there are separating parts (90, 106) on the above-mentioned abutting surfaces (84A, 85A), and the above-mentioned separating parts (90, 106) are set in the following way: on the above-mentioned tray (70) along the above-mentioned first When sliding in one direction (8), the abutting portions (76, 77, 78, 79, 105) and the abutting surfaces (84A, 85A) are alternately repeatedly abutted and separated. the

Description of drawings

FIG. 1 is a perspective view of an image recording device 10 . the

FIG. 2 is a schematic cross-sectional view of the inside of the printing unit 11 . the

FIG. 3 is a perspective view of the sheet feeding cassette 16 . the

4A is a perspective view of the lower surface side of the paper discharge tray 60 and the auxiliary tray 70 , and FIG. 4B is an exploded perspective view of the lower surface side of the paper discharge tray 60 and the auxiliary tray 70 . the

5A is a horizontal sectional view of the guide flange 84; FIG. 5B is a horizontal sectional view of the elastic piece 74; FIG. It is a horizontal cross-sectional view of the guide flange 84 and the elastic piece 74 in a state where the contact portion 76 is fitted into the fitting recess 88 . the

6A to 6E are operation explanatory diagrams illustrating the operation of the elastic piece 74 and the contact portion 76 . the

7A is a perspective view of the paper discharge tray 60 in a state where the auxiliary tray 70 is in the storing posture, and FIG. 7B is a perspective view of the paper discharge tray 60 in the state where the auxiliary tray 70 is in the supporting posture. the

8A to 8C are horizontal cross-sectional views of the guide flange 84 and the elastic piece 74 of Modification 1, and FIGS. 8D to 8F are horizontal cross-sectional views of the guide flange 84 and the elastic piece 74 of Modification 2. FIG. the

Detailed ways

Hereinafter, embodiment of this invention is demonstrated. In addition, embodiment is only an example of this invention, It cannot be overemphasized that embodiment can be changed suitably in the range which does not change the summary of this invention. In the following description, the up-down direction 7 is defined based on the state in which the image recording device 10 is set to be usable (the state in FIG. 1 ). In addition, the front-rear direction 8 is defined with the operation section 13 provided on the front surface (front) side of the image recording device 10 . Furthermore, the left-right direction 9 is defined by viewing the image recording device 10 from the front side. the

[Overview of Image Recording Device 10]

As shown in FIG. 1 , the image recording device 10 includes a printing unit 11 for recording an image on a sheet 15 ( FIG. 2 ), and a scanning unit 12 for reading an image recorded on a document (not shown), and is capable of printing, scanning , copying, etc. The scanning unit 12 may have any configuration. Hereinafter, description of the scanning unit 12 will be omitted. the

The printer unit 11 receives a print instruction from an external device such as a personal computer or the operation unit 13 to record an image on a sheet 15 ( FIG. 2 ). The sheet 15 is recording paper, glossy paper, postcard, or the like, and is held on a paper feeding cassette 16 . Paper feeding cassette 16 is housed in a lower portion of housing 14 . The lower portion of the front surface of the frame body 14 in the front-rear direction 8 has an opening 17 exposing the paper feeding cassette 16 . The paper feeding cassette 16 is drawn out from the frame body 14 through the opening 17 or inserted into the frame body 14 through the opening 17 . the

As shown in FIG. 2 , inside the housing 14 are provided a supply unit 20 that feeds the sheet 15 from the sheet feeding cassette 16 , a transport path 30 that is a space through which the sheet 15 passes, and a pair of rollers 35 that sandwich the sheet 15 for transport. and 36 , and a recording unit 28 for recording an image on the sheet 15 . The components constituting the above-mentioned parts are attached to the frame body 14 or a frame (not shown) provided in the frame body 14 . the

The supply unit 20 includes a support shaft 21 rotatably supported by the frame, an arm 22 rotatably supported at one end of the support shaft 21 , a supply roller 23 rotatably supported at the other end of the arm 22 , and an arm 22 provided on the arm 22 . A plurality of gears 24. The arm 22 rotates around the shaft 21 so that the feed roller 23 comes into contact with the sheet 15 placed on the paper feed cassette 16 . The spindle 21 is rotated by an unillustrated drive motor. The rotation of the spindle 21 is transmitted to the supply roller 23 through a plurality of gears 24 . The supply roller 23 rotated by the support shaft 21 sends the abutted sheet 15 to the transport path 30. the

The conveying path 30 includes a curved path 31 indicated by a single-dashed line in FIG. 2 and a straight path 32 indicated by a double-dotted line. The curved path 31 curves upward and extends with the rear end of the sheet feeding cassette 16 in the front-rear direction 8 as the base end. The straight path 32 extends linearly from the end of the curved path 31 toward the front. The transport path 30 is a space divided by a plurality of guide members 33 and a platen 34 . The platen 34 is disposed above the sheet feeding cassette 16 and defines a part of the lower surface of the linear path 32 . A first roller pair 35 is provided on the rear side of the platen 34 in the front-back direction 8 . The first roller pair 35 includes a conveying roller 35A rotated by a driving motor not shown, and a driven roller 35B arranged below the conveying roller 35A. The first roller pair 35 sandwiches the sheet 15 on the conveyance path 30 and conveys it. the

The second roller pair 36 is provided on the front side of the platen 34 in the front-rear direction 8 . The second roller pair 36 includes a discharge roller 36A rotated by a drive motor (not shown), and a sprocket 36B arranged above the discharge roller 36A. The second roller pair 36 sandwiches the sheet 15 on the conveyance path 30 and conveys it. The sheet 15 is conveyed intermittently on the platen 34 by the roller pairs 35 and 36 , and an image is recorded by the recording unit 28 . the

The recording unit 28 uses an inkjet recording method that discharges ink droplets. The recording unit 28 is arranged on a carriage 29 arranged above the platen 34 . The bracket 29 is supported so as to be able to reciprocate in the left-right direction 9 (direction perpendicular to the paper surface in FIG. 2 ). The recording unit 28 reciprocates in the left-right direction 8 , and discharges ink droplets onto the sheet 15 on the platen 34 to perform image recording. The image-recorded sheet 15 is discharged to the paper feed cassette 16 by the second roller pair 36 . Hereinafter, the sheet feeding cassette 16 will be described in detail. the

[Cassette 16]

As shown in FIG. 2 , the paper feed cassette 16 includes a main tray 40 and a sub-tray 50 on which the sheets 15 are respectively placed, and a paper discharge tray 60 on which the image-recorded sheets 15 are received. An auxiliary tray 70 (an example of a tray) is slidably provided on the paper discharge tray 60 (an example of a supporting member). The auxiliary tray 70 is used by the user by drawing it forward from the paper output tray 60 . The discharge tray 60 and the auxiliary tray 70 are examples of sheet holding devices. the

[Main Tray 40]

As shown in FIG. 3 , the main tray 40 includes a bottom plate 41 , a front plate 42 , an inclined plate 43 , a left side plate 44 and a right side plate 45 . The bottom plate 41 is in the shape of a rectangular plate. As shown in FIG. 2 , the sheet 15A is placed on the bottom plate 41 . The front plate 42 protrudes upward from the front end of the bottom plate 41 in the front-rear direction 8 and is provided with a grip portion to be gripped by the user. The inclined plate 43 extends obliquely rearward and upward from the rear end of the bottom plate 41 in the front-rear direction 8 , and guides the sheet 15A sent rearward by the supply unit 20 to the transport path 30 . A left side plate 44 ( FIG. 3 ) protrudes upward from the left end portion of the bottom plate 41 in the left-right direction 9 . The right side plate 45 protrudes upward from the right end portion of the bottom plate 41 in the left-right direction 9 . As shown in FIG. 3 , the left side plate 44 and the right side plate 45 respectively have bearing holes 46 for receiving the rotation shafts 65 , 66 ( FIG. 4B ) provided on the discharge tray 60 . The main tray 40 rotatably supports the discharge tray 60 through the bearing holes 46 . In addition, the left side plate 44 and the right side plate 45 each have a guide rail 47 on the inner side. The guide rail 47 extends along the front-back direction 8 and supports the sub-tray 50 so as to be slidable in the front-back direction 8 . the

[sub-tray 50]

The sub-tray 50 has a rectangular plate shape. As shown in FIG. 2 , the sheet 15B is placed on the sub-tray 50 . The sub-tray 50 is arranged on the upper side of the bottom plate 41 of the main tray 40 and between the left side plate 44 ( FIG. 3 ) and the right side plate 45 of the main tray 40 . Both ends of the sub-tray 50 in the left-right direction 9 are fitted to guide rails 47 ( FIG. 3 ) provided on the main tray 40 . Accordingly, the sub-tray 50 is supported by the main tray 40 through the guide rail 47 so as to be slidable in the front-rear direction 8 . the

The sub-tray 50 is provided so that the length in the front-back direction 8 is shorter than the length in the front-back direction 8 of the main tray 40 , and slides on the bottom plate 41 of the main tray 40 . The sub-tray 50 slides to a paper feeding posture indicated by a dotted line in FIG. 2 and a retracting posture indicated by a solid line in FIG. 2 . In the paper feeding posture, the rear end of the sub-tray 50 in the front-rear direction 8 approaches the inclined plate 43 of the main tray 40 . In the retracted posture, the rear end of the sub-tray 50 is separated from the inclined plate 43 of the main tray 40 . When the sub-tray 50 is in the receding posture indicated by the solid line in FIG. 2 , the supply roller 23 comes into contact with the sheet 15A placed on the main tray 40 and feeds the sheet 15A backward. When the sub-tray 50 is in the paper feeding posture indicated by the dotted line in FIG. 2 , the feed roller 23 comes into contact with the sheet 15B placed on the sub-tray 50, and feeds the sheet 15B backward. By sliding the sub-tray 50 , the user selects either the sheet 15A or the sheet 15B as the sheet 15 on which an image is to be recorded. the

[Exit Tray 60]

As shown in FIG. 3 , the discharge tray 60 has a support plate 61 that receives the sheet 15 . The length of the support plate 61 in the front-back direction 8 is substantially the same as the length of the sub-tray 50 in the front-back direction 8 , and has a rectangular plate-like outer shape that expands in the front-back direction 8 and the left-right direction 9 . The support plate 61 is disposed above the sub-tray 50 in the retracted position. As shown in FIGS. 4A and 4B , a left side wall 62 , a right side wall 63 and a front wall 64 protrude downward from the lower surface of the support plate 61 . The discharge tray 60 is supported by the main tray 40 via the left side wall 62 , the right side wall 63 and the front wall 64 ( FIG. 2 ). Specifically, the lower end of the left side wall 62 abuts against the upper end of the left side plate 44 ( FIG. 3 ) of the main tray 40 , and the lower end of the right side wall 63 abuts against the upper end of the right side plate 45 ( FIG. 3 ) of the main tray 40 . Next, the lower end of the front wall 64 abuts against the upper end of the front plate 42 ( FIG. 3 ) of the main tray 40 , so that the discharge tray 60 is supported by the main tray 40 . the

The discharge tray 60 is rotatably supported by the main tray 40 ( FIG. 3 ) via a pair of left and right rotation shafts 65 and 66 shown in FIG. 4B . The rotation shaft 65 protrudes leftward in the left-right direction 9 from the rear end portion of the left side wall 62 in the front-back direction 8 . The rotation shaft 66 protrudes rightward in the left-right direction 9 from the rear end portion of the right side wall 63 in the front-back direction 8 . The rotation shafts 65 and 66 are inserted through the bearing holes 46 provided in the left side plate 44 and the right side plate 45 of the main tray 40 ( FIG. 3 ). According to this configuration, the front portion in the front-rear direction 8 of the paper discharge tray 60 is the turning front end, and is lifted from the main tray 40 by turning around the axes of the rotation shafts 65 and 66 . The user lifts the paper output tray 60 from the main tray 40 to supply sheets 15A to the main tray 40 . the

As shown in FIGS. 4A and 4B , the discharge tray 60 has a support mechanism 80 that supports the auxiliary tray 70 disposed on the lower surface side of the support plate 61 so as to be slidable in the front-rear direction 8 . Further, the front wall 64 of the paper discharge tray 60 is divided into a left front wall 64A and a right front wall 64B, and an opening 68 is formed to draw out the auxiliary tray 70 from the paper discharge tray 60 . Through this opening 68 , the front surface of the auxiliary tray 70 in the front-rear direction 8 is exposed to the outside. the

The support mechanism 80 includes a pair of left and right grooves 81 , 82 fitted to the pair of left and right guide rails 72 , 73 provided on the auxiliary tray 70 , and a pair of left and right restricting flanges 83A, 83B. The restriction flanges 83A, 83B contact the sub-tray 70 from the front side in the front-rear direction 8 , and the rearward sliding of the sub-tray 70 is restricted by the restriction flanges 83A, 83B. the

The grooves 81 , 82 are defined by the support plate 61 , a pair of left and right guide flanges 84 , 85 , and a pair of left and right support flanges 86 , 87 . Guide flanges 84 , 85 protrude downward from the lower surface of the support plate 61 . The guide flange 84 extends in the front-rear direction 8 from the rear portion to the front end of the support plate 61 in the front-rear direction 8 , and is connected to the right end portion of the left front wall 64A in the left-right direction 9 . The guide flange 85 extends in the front-rear direction 8 from the rear portion to the front end of the support plate 61 in the front-rear direction 8 , and is connected to the left end portion of the right front wall 64B in the left-right direction 9 . That is, the guide flange 84 and the guide flange 85 are separated in the left-right direction 9 . The auxiliary tray 70 is accommodated in the accommodation space 67 surrounded by the pair of left and right guide flanges 84 , 85 and the support plate 61 . the

The support flanges 86 and 87 define the lower surfaces of the grooves 81 and 82 and support the guide rails 72 and 73 of the auxiliary tray 70 fitted in the grooves 81 and 82 from below. Specifically, the support flange 86 protrudes rightward in the left-right direction 9 from the lower end of the guide flange 84 , and faces the support plate 61 in the vertical direction 7 . The support flange 86 is provided at the front portion of the guide flange 84 in the front-rear direction 8 and extends in the front-rear direction 8 . On the other hand, the support flange 87 protrudes leftward in the left-right direction 9 from the lower end portion of the guide flange 85 , and faces the support plate 61 in the vertical direction 7 . The support flange 87 is provided at a front portion of the guide flange 85 in the front-rear direction 8 and extends in the front-rear direction 8 . the

A pair of left and right restricting flanges 83A, 83B protrude downward from the lower surface of the support plate 61 , respectively. The restricting flanges 83A, 83B extend along the left-right direction 9 , respectively. The left end portion of the restriction flange 83A in the left-right direction 9 is connected to the rear end portion of the guide flange 84 in the front-rear direction 8 . The right end portion of the restriction flange 83B in the left-right direction 9 is connected to the rear end portion of the guide flange 85 in the front-rear direction 8 . On the restriction flanges 83A, 83B, the auxiliary tray 70 is abutted from the front surface side in the front-rear direction 8 . Therefore, the rear end of the auxiliary tray 70 in the front-rear direction 8 is restricted from sliding backward of the auxiliary tray 70 such that the rear end of the guide flanges 84, 85 is more rearward. the

As shown in FIGS. 4B and 5A , the guide flanges 84 , 85 each have a pair of front and rear fitting recesses 88 , 89 for positioning the auxiliary tray 70 . In addition, FIGS. 5A to 5D are views of a horizontal cross section passing through the guide flange 84 and the contact portion 76 as viewed from the lower surface side. The fitting recesses 88 and 89 of the guide flange 84 are recessed so as to recede from the right side surface 84A (an example of the contact surface) of the guide flange 84 in the left-right direction 9 . The fitting recesses 88 and 89 of the guide flange 85 are recessed so as to recede from the left side surface 85A (an example of the contact surface) of the guide flange 85 in the left-right direction 9 . The right side surface 84A of the guide flange 84 and the left side surface 85A of the guide flange 85 are separated in the left-right direction 9 (an example of the second direction). A pair of left and right fitting recessed parts 88 (an example of a second recessed part) is provided on the upper side of the central part in the front-rear direction 8 of the support flanges 86 and 87 . This is to prevent the guide rails 72 , 73 of the auxiliary tray 70 from coming out of the grooves 81 , 82 . A pair of left and right fitting recesses 89 (an example of a first recess) are provided at rear end portions of the guide flanges 84 , 85 in the front-rear direction 8 . This is because when the rear end of the auxiliary tray 70 in the front-rear direction 8 comes into contact with the regulating flanges 83A, 83B, the contact portions 76 , 77 described later fit into the fitting recess 89 . The abutting portions 76 and 77 are fitted into the fitting recessed portion 88 or the fitting recessed portion 89 so that the auxiliary tray 70 is positioned in the front-rear direction 8 . Details will be given later. the

On the right side surface 84A of the guide flange 84, a plurality of protrusions 90 protruding rightward are provided. In addition, a plurality of protrusions 90 protruding leftward are provided on the left side surface 85A of the guide flange 85 . Each protrusion 90 has a rectangular parallelepiped shape, and is arranged apart from each other by a predetermined length in the front-rear direction 8 . The predetermined length is determined in accordance with a design to reduce the sliding contact noise between the discharge tray 60 and the auxiliary tray 70 . In addition, the protrusions 90 are arranged substantially uniformly over the entire area between the fitting recess 88 and the fitting recess 89 so that sliding contact noise can be reduced over the entire range in which the auxiliary tray 70 slides. The guide flange 84 and the guide flange 85 are formed in a symmetrical shape in the left-right direction 9 including the fitting recessed parts 88 and 89 and the convex part 90 . Furthermore, on one convex portion 90 , an edge 92 is located on the front side of the edge 91 in the front-rear direction 8 . the

[auxiliary tray 70]

As shown in FIGS. 4B and 7B, the auxiliary tray 70 has a plate-shaped base 71 capable of supporting the sheet 15 (FIG. 2). At the front end portion of the base portion 71 in the front-rear direction 8 , a brake portion 110 is rotatably provided. The stopper 110 is turned by the user from the posture of lying down on the base 71 ( FIGS. 7A and 7B ) to the standing posture of standing upright with respect to the base 71 . In addition, illustration of the brake part 110 is abbreviate|omitted in FIG. 4A, 4B. the

A pair of left and right guide rails 72 , 73 that fit into left and right grooves 81 , 82 of the discharge tray 60 are provided on the base 71 . The guide rail 72 is provided at the left end portion of the base portion 71 in the left-right direction 9 and extends along the front-rear direction 8 . The guide rail 73 is provided at the right end portion of the base portion 71 in the left-right direction 9 and extends along the front-rear direction 8 . The auxiliary tray 70 is supported by the discharge tray 60 so as to be slidable in the front-rear direction 8 (an example of the first direction) via the grooves 81 , 82 and the guide rails 72 , 73 . The sub-tray 70 is slid to take the storage posture shown in FIG. 7A (an example of the first posture) and the supporting posture shown in FIG. 7B (an example of the second posture). When the auxiliary tray 70 is in the storage position, only the handle 111 of the stopper 110 is exposed to the outside, and most of it is stored in the storage space 67 of the discharge tray 60 ( FIG. 4B ). The auxiliary tray 70 protrudes toward the front side from the front wall 64 of the discharge tray 60 in the support posture, and supports a part of the sheet 15 as shown in FIG. 2 . the

As shown in FIG. 4B , a pair of left and right elastic pieces 74 , 75 (an example of elastic pieces) and a pair of left and right contact portions 76 , 77 (an example of contact portions) are provided on the guide rails 72 , 73 . The elastic pieces 74 , 75 and the abutting portions 76 , 77 prevent the subtray 70 from being misaligned in the left-right direction 9 as will be described later, and also perform positioning of the subtray 70 in the storing posture and the supporting posture. the

As shown in FIG. 5B , a free-end-shaped elastic piece 74 protruding rearward from the rear surface of the guide rail 72 in the front-rear direction 8 is provided on the guide rail 72 . The auxiliary tray 70 is an elastically deformable resin molded product molded from a resin material. Therefore, the elastic piece 74 can be elastically deformed. The elastic piece 74 is provided apart from the base portion 71 in the left-right direction 9 so as to be bendable in the left-right direction 9 . the

The elastic piece 74 is provided with a protruding front end (rear end in the front-rear direction 8 ) protruding leftward in the left-right direction 9 , and is aligned with the right side 84A of the guide flange 84 in the left-right direction 9 ( FIG. 5A ) Opposing abutment 76 . As shown in FIG. 5C, the abutment portion 76 fits into the fitting recess 89 of the guide flange 84 when the subtray 70 is in the accommodated posture (FIG. 7A). As shown in FIG. 5D , the contact portion 76 fits into the fitting recess 88 of the guide flange 84 when the auxiliary tray 70 is in the support posture ( FIG. 7B ). the

The elastic piece 75 and the contact portion 77 are provided in a shape symmetrical to the above-mentioned elastic piece 74 and the contact portion 76 in the left-right direction 9 . Like the contact part 76, the contact part 77 fits in the fitting recessed part 89 of the guide flange 85 when the subtray 70 is in a storage position (FIG. 7A). Moreover, the contact part 77 fits in the fitting recessed part 88 of the guide flange 85 when the auxiliary tray 70 is in a support posture (FIG. 7B). the

The distance between the left end of the abutment portion 76 and the right end of the abutment portion 77 in the left-right direction 9 is longer than the distance between the right side surface 84A of the guide flange 84 and the left side surface 85A of the guide flange 85 . Therefore, as shown in FIGS. 6B to 6E , when the abutting portion 76 abuts on the right side surface 84A of the guide flange 84 and the abutting portion 77 abuts on the left side surface 85A of the guide flange 85 ( FIG. 4B ). , the elastic sheets 74, 75 flex. When the auxiliary tray 70 is located between the storing position and the supporting position, the abutting parts 76, 77 are pressed against the right side 84A of the guide flange 84 and the side of the guide flange 85 by the elastic force of the bent elastic pieces 74, 75, respectively. Left side 85A. the

As shown in FIGS. 5C and 5D , the auxiliary tray 70 is positioned in the front-rear direction 8 by fitting the contact portions 76 and 77 into the fitting recess 88 or the fitting recess 89 . Moreover, when the contact part 76,77 fits in the fitting recessed part 88 or the fitting recessed part 89, a user will feel a touch (positioning feeling) in the hand. Through this feeling, the user can easily recognize that the auxiliary tray 70 is in the storing posture or the supporting posture. In addition, as shown in FIGS. 6B to 6E , when the abutting portion 76 abuts on the right side surface 84A of the guide flange 84 and the abutting portion 77 ( FIG. 4B ) abuts on the left side surface 85A of the guide flange 85 , The auxiliary tray 70 slides along guide flanges 84 , 85 . Thereby, the positional displacement of the auxiliary tray 70 in the left-right direction 9 is prevented. the

The abutting portions 76 and 77 are designed to be intermittently separated from the right side surface 84A of the guide flange 84 and the left side surface 85A of the guide flange 85 by the plurality of convex portions 90 . Hereinafter, the shape of the contact portion 76 will be described. In addition, the abutting portion 77 is designed to have a symmetrical shape with the abutting portion 76 in the left-right direction 9, and therefore description of the abutting portion 77 is omitted. the

As shown in FIG. 5B , the contact portion 76 has a mountain-shaped shape protruding rightward from the protruding front end portion (the rear end portion in the front-rear direction 8 ) of the elastic piece 74, and has a first sliding surface 101, a second The sliding contact surface 102 and the third sliding contact surface 103 . The first sliding surface 101 is provided on the protruding front end (the left end in the left-right direction 9 ) of the contact portion 76 . The first sliding contact surface 101 is designed to be in surface contact with the right side surface 84A of the guide flange 84 . Specifically, the first sliding contact surface 101 is designed to be parallel to the right side surface 84A in a state where the elastic piece 74 is bent. In addition, the first sliding surface 101 is designed to be able to slidably contact the right side surface 84A of the guide flange 84 when the auxiliary tray 70 slides. Specifically, it is designed so that the length L1 of the first sliding contact surface 101 in the front-rear direction 8 is shorter than the separation distance L2 ( FIG. 5A ) between two adjacent protrusions 90 in the front-rear direction 8 . the

The second sliding surface 102 and the third sliding surface 103 are in sliding contact with the protruding front end edges 91 and 92 of the convex portion 90 when the auxiliary tray 70 slides. The second sliding contact surface 102 extends obliquely forward leftward from the front end of the first sliding contact surface 101 in the front-rear direction 8 . Therefore, the second sliding contact surface 102 is inclined with respect to the first sliding contact surface 101 , and has a shape in which the front end side recedes from the right side surface 84A. The third sliding contact surface 103 extends obliquely leftward and rearward from the rear end of the first sliding contact surface 101 in the front-rear direction 8 . Therefore, the third sliding contact surface 103 is inclined with respect to the first sliding contact surface 101 , and has a shape in which the rear end side recedes from the right side surface 84A. the

[Operation of printing unit 11]

The operation of the printing unit 11 will be described with reference to FIG. 2 . When a user inputs a print instruction from the operation unit 13 or an external device, the sheet 15 held on the sheet feeding cassette 16 is sent out to the transport path 30 by the supply roller 23 . The fed sheet 15 is conveyed by a pair of rollers 35 and 36 on a curved path 31 and a straight path 32 . The sheet 15 is conveyed intermittently on the platen 34 , and an image is recorded by the recording unit 28 . The image-recorded sheet 15 is discharged from the roller pair 36 and received by the paper discharge tray 60 or the paper discharge tray 60 and the auxiliary tray 70 . the

Next, the operation of the abutting portion 76 and the elastic piece 74 when the auxiliary tray 70 in the storage position slides to take the support position will be described with reference to FIGS. 5A-5D , 6A-6E , and 7A-7B . In addition, since the abutting portion 77 and the elastic piece 75 operate symmetrically with the abutting portion 76 and the elastic piece 74 in the left-right direction 9, description of the operation of the abutting portion 77 and the elastic piece 75 is omitted. the

When the auxiliary tray 70 is in the housing posture shown in FIG. 7A , the contact portion 76 fits into the fitting recess 89 of the guide flange 84 as shown in FIG. 5C . When the auxiliary tray 70 in the storage position is slid forward by the user in the front-rear direction 8, as shown in FIG. . The bent elastic piece 74 brings the abutting portion 76 into abutment with the front end surface 93 of the convex portion 90 as shown in FIG. 6B . The contact portion 76 is in sliding contact with the front end surface 93 of the convex portion 90 on the first sliding surface 101 . If the auxiliary tray 70 further slides forward, as shown in FIG. 6C , the contact portion 76 is pressed against the edge 91 of the protruding front end of the convex portion 90 on the third sliding surface 103 due to the elastic force of the deflected elastic piece 74, Sliding contact with edge 91 . When the auxiliary tray 70 further slides forward, as shown in FIG. 6D , the contact portion 76 comes into contact with the right side surface 84A of the guide flange 84 on the first sliding contact surface 101 to make sliding contact. When the auxiliary tray 70 further slides forward, as shown in FIG. 6E , the contact portion 76 comes into sliding contact with the edge 92 of the protruding tip of the convex portion 90 on the second sliding contact surface 102 . Since the second sliding surface 102 is in sliding contact with the edge 92 , the first sliding surface 101 is separated from the right side surface 84A of the guide flange 84 and is not in sliding contact with the right side surface 84A of the guide flange 84 . The abutting portion 76 moves forward while being intermittently separated from the right side surface 84A of the guide flange 84 by the convex portion 90 . When the auxiliary tray 70 is pulled out to the position where it becomes the supporting posture shown in FIG. 7B , the contact portion 76 fits into the fitting recess 88 . the

When the auxiliary tray 70 in the supporting position returns to the storage position, similarly to the above, the abutting portion 76 and the right side surface 84A of the guide flange 84 are intermittently moved backward due to the convex portion 90 . In the storage posture shown, the contact portion 76 fits into the fitting recess 89 . the

[Effects of this embodiment]

As described above, due to the plurality of protrusions 90 , the contact portions 76 , 77 are intermittently separated from the right side surface 84A of the guide flange 84 and the left side surface 85A of the guide flange 85 . Therefore, compared with a structure in which the contact portions 76, 77 are continuously in sliding contact with the guide flanges 84, 85 without the protrusion 90, the sound generated by the sliding contact between the discharge tray 60 and the auxiliary tray 70 can be reduced. the

In addition, the abutting portions 76 , 77 and the guide flanges 84 , 85 can be intermittently separated by the simple structure of the convex portion 90 . the

In addition, since the protrusions 90 are arranged substantially evenly over the entire area between the fitting recesses 88 and 89, the abutting parts 76, 77 and the guide flanges 84, 85 can be intermittently positioned regardless of the position of the tray. separated. As a result, regardless of the position of the sub-tray 70 , it is possible to reduce the sound generated by the sliding contact of the discharge tray 60 and the sub-tray 70 . the

In addition, since the auxiliary tray 70 is housed in the paper output tray 60 when not in use, the paper feeding cassette 16 can be downsized. the

In addition, since the second sliding surface 102 and the third sliding surface 103 are provided on the contact parts 76 and 77, the auxiliary tray 70 can be slid without the contact parts 76 and 77 being caught on the convex part 90. . the

In addition, since the plurality of protrusions 90 are provided, it is possible to obtain an appropriate sense of positioning when sliding the auxiliary tray 70 . the

[Modification 1]

In the above-described embodiment, an example in which the contact portions 76 , 77 are intermittently separated from the guide flanges 84 , 85 by the rectangular parallelepiped convex portion 90 has been described. However, instead of the rectangular parallelepiped convex portion 90 , a triangular column-shaped convex portion 95 , a semicylindrical convex portion 96 , and a trapezoidal convex portion 97 shown in FIG. 8A may be provided on the guide flanges 84 , 85 . The contact portions 76, 77 and the guide flanges 84, 85 can also be intermittently separated by the convex portions 95, 96, 97 (an example of the protruding portions), so that the friction caused by the sliding contact between the discharge tray 60 and the auxiliary tray 70 can be reduced. produced sound. the

In the case of using the convex portions 95, 96, 97 of the above-mentioned shape, instead of the mountain-shaped contact portion 76, a rectangular parallelepiped contact portion 78 (an example of the contact portion) shown in FIG. 8A can be used. That is, when the convex portions 95 , 96 , 97 having inclined surfaces are used, there is no need to provide the second sliding surface 102 and the third sliding surface 103 , so the rectangular parallelepiped contact portion 78 can be used. In addition, instead of the contact portion 76 having the second sliding surface 102 and the third sliding surface 103 , a semi-cylindrical contact portion 79 (an example of the contact portion) shown in FIG. 8B may be used. The convex parts 90 , 95 , 96 , and 97 are in sliding contact with the peripheral surface of the semi-cylindrical contact part 79 . the

[Modification 2]

In this modified example, the left side surface 84A of the guide flange 84 is configured as a curved surface that smoothly and continuously concavo-convex along the front-rear direction 8 . On the other hand, a contact portion 105 and a separation protrusion 106 (an example of a separation portion) are provided on the elastic piece 74 instead of the contact portion 76 . The contact portion 105 is configured in a semi-cylindrical shape. The separation protrusion 106 protrudes rearward from the rear surface of the abutment portion 105 in the front-rear direction 8 . The separation protrusion 106 is disposed on the right side of the elastic piece 74 to prevent the elastic piece 74 from contacting the guide flange 84 . As shown in FIG. 8E , the contact portion 105 is in sliding contact with the right side surface 84A of the guide flange 84 . As shown in FIG. 8F , when the separation protrusion 106 abuts on the convex portion 84B (an example of the convex portion) of the right side surface 84A of the guide flange 84 , the contact portion 105 is separated from the right side surface 84A. Therefore, when the auxiliary tray 70 is slid, the contact portion 105 is intermittently separated from the right side surface 84A. Therefore, it is possible to reduce the sound generated by the sliding contact between the discharge tray 60 and the auxiliary tray 70 in the same manner as in the above-described embodiment. the

[Other modifications]

In the above embodiment, an example was described in which the contact portions 76 and 77 are biased by the elastic pieces 74 and 75 , but instead of the elastic pieces 74 and 75 , leaf springs (an example of the elastic pieces) may be used. the

In addition, in the above embodiment, the example in which the support mechanism 80 is provided on the discharge tray 60 and the guide rails 72 and 73 , the elastic pieces 74 and 75 , and the abutting parts 76 and 77 are provided on the auxiliary tray 70 has been described. However, it is also possible to provide the support portion 80 on the auxiliary tray 70 , and provide the guide rails 72 and 73 , the elastic pieces 74 and 75 , and the abutting portions 76 and 77 on the discharge tray 60 . the

In addition, in the above-mentioned embodiment, the example in which the plurality of convex portions 90 are arranged at equal intervals in the front-rear direction 8 has been described, but the present invention is not limited thereto. The distance between the several convex parts 90 should just be set suitably. the

In addition, in the above-mentioned embodiment and Modification 1, the example in which the convex portions 90 , 95 , 96 , and 97 are provided on the right side surface 84A of the guide flange 84 and the left side surface 85A of the guide flange 85 has been described. However, the protrusions 90 , 95 , 96 , 97 may also be provided at locations other than the guide flanges 84 , 85 . For example, the protrusions 90 , 95 , 96 , 97 are provided at positions above the elastic pieces 74 , 75 on the lower surface of the base 61 of the paper discharge tray 60 . Second contact portions having the same shape as the contact portions 76 , 77 , 78 , and 79 are provided on upper surfaces of the elastic pieces 74 , 75 . The second contact portion intermittently contacts the protrusions 90 , 95 , 96 , and 97 when the auxiliary tray 70 slides, and bends the elastic pieces 74 , 75 in the left-right direction 9 . Even with this configuration, the abutting portions 74, 75 and the guide flanges 84, 85 can be separated intermittently, and sliding contact noise can be reduced. In addition, abrasion of the contact parts 74 and 75 can be reduced. the

In addition, in the above-mentioned embodiment, the example in which the paper output tray 60 and the sub-tray 70 are provided in the paper feed cassette 16 has been described. However, the discharge tray 60 and the auxiliary tray 70 may also be provided on the frame body 14 . the

In addition, in the above-mentioned embodiments, an example in which the present invention is applied to the paper discharge tray 60 and the auxiliary tray 70 slidably supported on the paper discharge tray 60 has been described. However, the present invention can also be applied to the frame body 14 and the discharge tray 60 slidably supported on the frame body 14 . the

In this case, the housing 14 is an example of a supporting member, and the discharge tray 60 is an example of a tray. In addition, in the above-mentioned embodiment, the example of the paper output tray 60 and the auxiliary tray 70 used for holding the sheet|seat 15 on which the image was recorded in this invention was demonstrated. However, the present invention can also be used for trays holding sheets 15 before recording images. For example, the present invention may also be used with the main tray 40 and the extension trays slidably supported on the main tray 40 . By pulling out the extension tray from the main tray 40 , the area where the sheet 15 can be placed is enlarged, and a sheet 15 of a larger size (for example, A3 size) can be placed on the sheet feeding cassette 16 . the

In addition, the present invention can also be applied to the tray and the frame 14 that hold sheets fed manually. The tray is slidably held on the frame body 14 , and the user pulls out and places the sheet 15 . the

In addition, in the above-mentioned embodiments and modifications, an example in which the present invention is applied to the image recording device 10 has been described. However, the present invention can also be used in a scanner that transmits a document on which an image is recorded and reads the image. Specifically, the present invention can be applied to a scanner frame and a tray slidably supported on the frame. the

Claims (6)

1. A sheet support device, characterized in that, comprising: a support member (60); and a tray (70) supported by the support member (60) in a manner capable of sliding along the first direction (8), and the sheet is placed on the tray (70), In the above-mentioned sheet support device, either one of the support member (60) and the tray (70) has a pair of abutment surfaces (84A, 85A), and the pair of abutment surfaces (84A, 85A) are along the extending in the first direction (8) and separated from each other in a second direction (9) perpendicular to the first direction (8), The other one of the support member (60) and the tray (70) has a pair of abutment parts (76, 77, 78, 79, 105) respectively abutting against the pair of abutment parts in the second direction (9). The abutting surfaces (84A, 85A) are opposite and abutting; and a pair of elastic pieces (74, 75) respectively press the abutting parts (76, 77, 78, 79, 105) to each of the abutting surfaces (84A, 85A) ), There are separating parts (90, 106) on the above-mentioned contact surfaces (84A, 85A), and the above-mentioned separating parts (90, 106) are provided in such a way that when the above-mentioned tray (70) slides in the above-mentioned first direction (8), The abutting portions (76, 77, 78, 79, 105) and the abutting surfaces (84A, 85A) are alternately repeatedly abutted and separated. 2. The sheet support device according to claim 1, wherein: The above-mentioned pair of abutting surfaces (84A, 85A) are planes respectively, The separating parts (90, 106) are a plurality of protruding parts (90, 95, 96, 97) respectively projecting from the contact surfaces (84A, 85A) and arranged apart from each other in the first direction (8), When the tray (70) slides in the first direction (8), the protrusions (90, 95, 96, 97) abut against the elastic pieces (74, 75) so that the elastic pieces (74, 75) Elastically deforms in a direction to separate the abutting portion (76, 77, 78, 79, 105) from the abutting surface (84A, 85A). 3. The sheet support device according to claim 2, wherein: The above-mentioned plurality of protrusions (90, 95, 96, 97) are provided on the above-mentioned abutment surfaces (84A, 85A) opposite to the above-mentioned abutment portions (76, 77, 78, 79, 105) during the sliding of the above-mentioned tray (70). ) of the entire region. 4. The sheet support device according to claim 1, wherein: Both the above-mentioned supporting member (60) and the above-mentioned tray (70) are in the shape of a tray for placing sheets, The tray (70) is slid in the first direction (8) to change its posture into a first posture accommodated in the support member (60) and a second posture exposed from the support member (60), A first recess (89) is provided on the contact surface (84A, 85A), and when the posture of the tray (70) is the first posture, the contact part (76, 77, 78, 79, 105 ) into the first recess (89); and a second recess (88), when the posture of the tray (70) is the second posture, the abutting portion (76, 77, 78, 79, 105) fits into the The second recess (88). 5. The sheet support device according to claim 1, wherein: The pair of abutting surfaces (84A) are respectively curved surfaces with continuous concavities and convexities smoothly along the first direction (8), The separation part (106) is provided on the elastic piece (74) separately from the contact part (105) in the first direction (8), and when the tray (70) slides in the first direction (8), The above-mentioned separation part (106) is in contact with the convex part (84B) of the above-mentioned abutment surface (84A) to make the above-mentioned elastic piece (74) to separate the above-mentioned abutment part (105) from the above-mentioned abutment surface (84A). Directional elastic deformation. 6. A sheet support device, characterized in that it comprises: a support member (60); and a tray (70) supported by the support member (60) in a manner capable of sliding along the first direction (8), and the sheet is placed on the tray (70), In the above-mentioned sheet support device, either one of the support member (60) and the tray (70) has an abutment surface (84A, 85A) extending along the first direction (8), The other one of the support member (60) and the tray (70) has: a contact portion (76, 77, 78, 79, 105) that is positioned in a second direction (9) perpendicular to the first direction (8). ) is opposed to and abuts against the above-mentioned abutment surface (84A, 85A); and the elastic piece (74, 75) presses the above-mentioned abutment portion (76, 77, 78, 79, 105), There are separating parts (90, 106) on the above-mentioned contact surfaces (84A, 85A), and the above-mentioned separating parts (90, 106) are provided in such a way that when the above-mentioned tray (70) slides in the above-mentioned first direction (8), The abutting portions (76, 77, 78, 79, 105) and the abutting surfaces (84A, 85A) are alternately repeatedly abutted and separated. the

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