JP2018165203A - Sheet support device, image forming apparatus and compound machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet support device having a seat stopper having a new configuration.SOLUTION: A compound machine 1 includes a seat stopper 6 having a regulation plate 61, a connection arm 62A and an energization member 63A. The compound machine 1 includes a first connection part C1A, a second connection part C2A, and a third connection part C3A. The third connection part C3A has a first slide mechanism, and the first slide mechanism extends to a discharge direction of a sheet S when the regulation plate 61 is in a storage position, a rotation axis of the second connection part C2A is positioned on one side with respect to a straight line SL1 passing a swing axis of the first connection part C1A and a rotation axis of the third connection part C3A when the regulation plate 61 is in a used position when viewed in a direction along the swing axis of the first connection part C1A, and a rotation axis of the second connection part C2A is positioned on the other side with respect to a straight line SL1 passing through the swing axis of the first connection part C1A and a rotation axis of the third connection part C3A when the regulation plate 61 is in the storage position.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a sheet support device, and an image forming apparatus and a multifunction peripheral including the sheet support device.

  2. Description of the Related Art Conventionally, in an image forming apparatus such as a printer, an image reading apparatus equipped with an ADF (auto document feeder), a multi-function machine equipped with the image forming apparatus and the image reading apparatus, a sheet discharged to a sheet support portion such as a discharge tray And a sheet stopper for regulating the downstream end of the sheet in the discharge direction so as not to fall. And the user can lift and take out the sheet | seat discharged | emitted by the sheet | seat support part.

  However, the upper portion of the sheet supporting portion provided with the sheet stopper is covered with the document supply tray in the case of ADF, or is covered with the image reading device in the case of a so-called in-body discharge type multifunction peripheral. For this reason, the user has to pull the sheet discharged to the sheet supporting portion obliquely upward so as not to be caught by the sheet stopper, and there is a problem that it is difficult to take out.

  As a countermeasure, Patent Document 1 discloses a configuration in which a sheet stopper is biased by a spring. According to this configuration, by rotating the sheet stopper downward against the biasing force of the spring, the user can easily pull out the sheet discharged to the sheet support unit without the sheet stopper being in the way. it can.

Japanese Utility Model Publication No. 1-72533

  In Patent Document 1, since the sheet stopper has a simple configuration, the function of the sheet stopper is also simple by rotating and fixing between a position where the sheet is regulated and a position where the sheet is not regulated. Therefore, it is conceivable to make the sheet stopper highly functional in order to further improve usability.

  An object of this invention is to provide the sheet | seat support apparatus provided with the sheet | seat stopper of a novel structure.

  The sheet support device of the present invention includes a discharge mechanism (24) for discharging a sheet (S), a sheet support portion (25) for supporting the sheet S discharged by the discharge mechanism (24), and discharge of the sheet (S). A sheet stopper having a regulating plate (61) that regulates the downstream end portion in the direction, a connecting arm (62A) that couples the regulating plate (61) and the sheet support portion (25), and an urging member (63A). (6) When the restricting plate (61) has the upstream side in the discharge direction as the base end portion (61A), the tip end portion (61B) rises with respect to the sheet support portion (25) and the tip end portion (61B) falls down. A first connecting portion (C1A) that connects the base end portion (61A) of the restricting plate (61) and the seat support portion (25) so as to be swingable between the storage position and the connecting arm (62A). ) And the first connecting portion ( 1A), the second connecting portion (C2A) for rotatably connecting the tip end portion (61B) side, the other end portion of the connecting arm (62A), and the first connecting portion (C1A) at the seat support portion (25). ) And a third connecting portion (C3A) that rotatably connects the downstream side in the discharge direction, and the urging member (63A) attaches the restricting plate (61) from the storage position toward the use position. Any one of the first connecting part (C1A), the second connecting part (C2A), or the third connecting part (C3A) has a first slide mechanism, and the first slide mechanism is a restriction plate (61). Extends in the discharge direction of the sheet (S) when in the storage position, and when the restriction plate (61) is in the use position when viewed in the direction along the swing axis of the first connecting portion (C1A), With respect to a straight line (SL1) passing through the swing shaft of the first connecting portion (C1A) and the rotating shaft of the third connecting portion (C3A) When the rotation shaft of the second connection portion (C2A) is located on one side and the restriction plate (61) is in the storage position, the swing shaft of the first connection portion (C1A) and the third connection portion (C3A) The rotation axis of the second connecting portion (C2A) is located on the other side with respect to a straight line (SL1) passing through the rotation axis.

  According to said structure, a toggle mechanism is comprised by a control board, a connection arm, a 1st connection part, a 2nd connection part, and a 3rd connection part.

  According to the present invention, when the sheet hits the restriction plate in the use position when taking out the sheet from the sheet support portion, the restriction plate is urged from the storage position toward the use position by the urging member. The restriction plate moves toward the storage position, and returns to the original use position after the sheet is taken out. Therefore, the user can easily pull out the sheet discharged to the sheet support portion without the sheet stopper being in the way. Further, the restriction plate is fixed when moved to the storage position. Therefore, the user can store the sheet stopper as required.

1 is a perspective view of a multifunction machine according to an embodiment. FIG. 2 is a schematic side view illustrating an outline of an internal configuration in the multifunction peripheral of FIG. 1. FIG. 6 is a plan view of the vicinity of a sheet stopper in a storage position. It is sectional drawing of the sheet stopper periphery in a use position. FIG. 6 is a cross-sectional view of the vicinity of the sheet stopper in a state where the hook is in contact with the sheet support surface between the use position and the storage position. FIG. 5 is a cross-sectional view of the vicinity of the sheet stopper in a state where the claw portion is in contact with the hole portion between the use position and the storage position. It is AA sectional drawing of FIG. It is sectional drawing of the sheet | seat stopper periphery of the modification 1 in a use position. It is sectional drawing of the sheet stopper periphery of the modification 1 which exists between a use position and a storage position. FIG. 10 is a cross-sectional view of the vicinity of a sheet stopper according to Modification 1 in the storage position. It is sectional drawing of the sheet | seat stopper periphery of the modification 2 in a use position. It is sectional drawing of the sheet stopper periphery of the modification 2 which exists between a use position and a storage position. It is sectional drawing of the sheet stopper periphery of the modified example 2 in the storage position. It is sectional drawing of the sheet | seat stopper periphery of the modification 3 in a use position. It is sectional drawing of the sheet | seat stopper periphery of the modification 3 which exists between a use position and a storage position. It is sectional drawing of the sheet | seat stopper periphery of the modification 3 in a storage position. It is sectional drawing of the sheet | seat stopper periphery of the modification 4 in a use position.

  The sheet supporting apparatus of the present invention can be used in an image forming apparatus such as a printer, an image reading apparatus provided with an ADF, a multi-function machine equipped with the image forming apparatus and the image reading apparatus, and the like. In the following embodiment, an example in which a sheet supporting device is applied to a multifunction machine will be described. In the following description, the front-rear, left-right, and upper-lower directions are determined based on the state in which the multifunction machine is installed as shown in FIG.

[Overall configuration of MFP]
FIG. 1 is a perspective view of a multifunction machine according to an embodiment. FIG. 2 is a schematic side view showing an outline of the internal configuration of the multifunction machine. The multi-function device 1 includes a lower housing 2, an upper housing 3, a document presser 4, and an ADF 5.

  The lower housing 2 is a substantially rectangular parallelepiped housing. As shown in FIG. 2, the lower casing 2 has an image on a sheet cassette 21 that accommodates the sheet S, a conveyance mechanism 22 that conveys the sheet S from the sheet cassette 21, and a sheet S that has been conveyed by the conveyance mechanism 22. And a discharge mechanism 24 that discharges the sheet S from the image forming unit 23 to the outside of the lower housing 2. The transport mechanism 22 and the discharge mechanism 24 are configured by arranging a plurality of pairs of rollers. The configuration of the image forming unit 23 is not particularly limited, and configurations such as an electrophotographic system, an inkjet system, and a thermal head system can be used.

  The multifunction device 1 has a so-called in-body discharge type. The upper surface of the lower housing 2 is recessed, and a sheet support portion 25 having a sheet support surface 25A that is inclined so as to climb while being curved from the rear side toward the front side is formed. The sheet support surface 25 </ b> A is a surface that supports the sheet S discharged by the discharge mechanism 24. In addition, the sheet support portion 25 is provided with a swingable sheet stopper 6 that aligns the discharged sheet S and restricts the downstream end portion in the discharge direction of the sheet S so as not to fall. In this embodiment, the downstream side in the discharge direction is the front side, and the upstream side in the discharge direction is the rear side.

  A sheet take-out port 26 is formed between the upper front portion of the lower housing 2 and the lower front portion of the upper housing 3. Then, the sheet S on which the image is formed is discharged to the sheet support portion 25 from the rear side to the front side by the discharge mechanism 24.

  The upper housing 3 is a substantially rectangular parallelepiped housing, and is provided above the lower housing 2 so as to cover the upper surface of the lower housing 2. A rear end portion of the upper housing 3 is connected to a rear end portion of the lower housing 2 so as to be rotatable in the vertical direction by a hinge 11 having a horizontal axis as a rotation axis. As a result, the upper housing 3 is rotatable with respect to the lower housing 2 between a closed position that covers the upper surface of the lower housing 2 and an open position that opens the upper surface of the lower housing 2.

  The upper housing 3 includes an operation unit 31 such as a touch panel and operation buttons on an inclined front upper surface. A document support surface 32 such as a platen glass that supports the document is disposed on the upper surface of the upper housing 3. The upper housing 3 accommodates an image reading unit 33 that reads an image from a document supported on the document support surface 32.

  The image reading unit 33 has a form called a so-called flat bed type. The image reading unit 33 includes an image sensor that reads an image and a drive mechanism that drives the image sensor. As the image sensor, for example, a line type sensor in which a plurality of photodiodes are arranged in the front-rear direction can be used. The drive mechanism includes a motor and a plurality of gears, and moves the image sensor in the left-right direction. Thereby, the image reading unit 33 can read the document supported on the document support surface 32 while moving the image sensor.

  The document retainer 4 is a substantially rectangular parallelepiped housing, and is provided above the upper housing 3 so as to cover the upper surface of the upper housing 3. The rear end portion of the document presser 4 is connected to the rear end portion of the upper housing 3 by a hinge 12 having a rotation axis parallel to the hinge 11 so as to be rotatable in the vertical direction. As a result, the document retainer 4 is rotatable with respect to the upper housing 3 between a closed position that covers the document support surface 32 and an open position that opens the document support surface 32.

  The ADF 5 is provided on the upper part of the document retainer 4. The ADF 5 includes a document supply tray 51 and a transport mechanism 52 that transports a document supported by the document supply tray 51 and passes the document sensor above the image sensor and discharges it to the document discharge tray 53 on the upper surface of the document retainer 4. Yes. As a result, the image reading unit 33 can automatically read a plurality of originals one by one. Further, as shown in FIG. 1, the document discharge tray 53 is provided with a swingable sheet stopper 54 that aligns the discharged document and restricts the downstream end in the document discharge direction so as not to drop. Yes.

  In the MFP 1 having such a configuration, the user can open the document retainer 4 by lifting the front end portion of the document retainer 4 and place the document on the document support surface 32. Further, the user can automatically read a plurality of documents by placing the documents on the document supply tray 51 of the ADF 5.

  Further, when the user lifts the upper housing 3 and moves it to the open position, the sheet take-out port 26 is expanded, and even if the discharged small-size sheet is supported on the back side of the sheet support portion 25, the small-size sheet is removed. It becomes easy to take out the sheet.

  Furthermore, by keeping the sheet stopper 6 of the sheet support portion 25 in a raised state, the sheets S discharged to the sheet support portion 25 can be aligned and the fall can be suppressed. Further, by keeping the sheet stopper 54 of the document discharge tray 53 raised, it is possible to align the documents discharged to the document discharge tray 53 and to suppress dropping.

[Configuration of sheet stopper]
FIG. 3 is a plan view of the periphery of the sheet stopper 6 in the storage position. 7 is a cross-sectional view taken along the line AA in FIG. 4 is a cross-sectional view of the periphery of the sheet stopper 6 in the use position, and FIG. 5 is a cross-sectional view of the periphery of the sheet stopper 6 between the use position and the storage position and the hook is in contact with the sheet support surface. FIG. 6 is a cross-sectional view of the periphery of the sheet stopper 6 in a state where the claw portion is in contact with the hole portion between the use position and the storage position.

  As shown in FIGS. 3 to 7, the sheet support surface 25 </ b> A has a recess 25 </ b> B for accommodating the sheet stopper 6. And in the right wall surface 25C and the left wall surface 25D of the recess 25B, the first groove portions 25E and 25F extending in the left-right direction and extending linearly in the front-rear direction, and the first groove portions 25E behind the first groove portions 25E and 25F, respectively. Second grooves 25G and 25H parallel to 25F are formed. Here, the term “parallel” includes the case where they are positioned on the same straight line.

  In addition, receiving portions 25J and 25K that can be engaged with the claw portions 64C and 64D are provided on the sheet support surface 25A of the recess 25B. The receiving portions 25J and 25K of the present embodiment are through holes that penetrate the sheet support surface 25A in the vertical direction.

  The sheet stopper 6 can swing on the front end portion 61B side around the rear base end portion 61A, and restricts the front end portion of the sheet S, and the restriction plate 61 and the sheet support portion 25. Connecting arms 62A and 62B, and urging members 63A and 63B for urging the restricting plate 61 from the storage position toward the use position.

  As shown in FIG. 4, the restricting plate 61 has a rear end as a base end portion 61A and a use position where the tip end portion 61B rises with respect to the sheet support surface 25A, and a sheet support surface 25A as shown in FIG. The tip portion 61B is a member that can swing between the collapsed storage position.

  As shown in FIG. 3, the regulation plate 61 is a rectangular plate-like member in plan view, and is formed to have a size that can be accommodated in the recess 25B. The restricting plate 61 has a restricting surface 61C that restricts the sheet end portion on the back side at the use position shown in FIG. The restricting plate 61 has plate-like ribs 61D and 61E extending in parallel with the right wall surface 25C and the left wall surface 25D of the recess 25B from the base end portion 61A toward the tip end portion 61B on the surface opposite to the restricting surface 61C. doing.

  First protrusions 61F and 61G that engage with the second grooves 25G and 25H, respectively, are formed on the base ends 61A on the side surfaces of the ribs 61D and 61E. The first protrusion 61F formed on the right side surface of the right rib 61D is a columnar protrusion extending in the right direction, and is rotatable and movable in the front-rear direction by being inserted into the right second groove 25G. It has become. On the other hand, the first protrusion 61G formed on the left side surface of the left rib 61E is a columnar protrusion extending in the left direction, and is rotatable by being inserted into the left second groove 25H and in the front-rear direction. It is movable. Thereby, the regulating plate 61 can swing around the first protrusions 61F and 61G with respect to the sheet support portion 25.

  Further, cylindrical holes 61H and 61J penetrating in the left-right direction are formed on the tip 61B side of the first protrusions 61F and 61G of the ribs 61D and 61E, respectively.

  The connecting arms 62A and 62B include a bar-shaped member having an L-shaped cross section composed of side plates 62C and 62D and upper plates 62E and 62F, and second protrusions 62G and 62H respectively formed at one end of the side plate. The third projections 62J and 62K are formed on the other ends of the side plates 62C and 62D, respectively. The second protrusion 62G formed on the left side surface of the right side plate 62C is a columnar protrusion extending in the left direction, and is rotatable by being inserted through the hole 61H. On the other hand, the second protrusion 62H formed on the left side surface of the left side plate 62D is a columnar protrusion extending in the right direction, and is rotatable by being inserted through the hole 61J. Accordingly, the connecting arms 62A and 62B can be rotated with respect to the regulating plate 61.

  The third protrusion 62J formed on the right side surface of the right side plate 62C is a columnar protrusion extending in the right direction, and is rotatable and movable in the front-rear direction by being inserted through the first groove 25E. ing. On the other hand, the third protrusion 62K formed on the left side surface of the left side plate 62D is a columnar protrusion extending in the left direction, and is rotatable and movable in the front-rear direction by being inserted into the first groove 25F. It has become. As a result, the connecting arms 62A and 62B can swing around the third protrusions 62J and 62K with respect to the seat support 25.

  Here, the connection parts constituted by the first protrusions 61F and 61G and the second groove parts 25G and 25H are respectively referred to as first connection parts C1A and C1B, and the first protrusions 61F and 61G in the first connection parts C1A and C1B. A mechanism that can move along the second grooves 25G and 25H is referred to as a second slide mechanism. In addition, the connecting portions constituted by the second protrusions 62G and 62H and the holes 61H and 61J are referred to as second connecting portions C2A and C2B, respectively. In addition, the connecting portions constituted by the third projecting portions 62J and 62K and the first groove portions 25E and 25F are respectively referred to as third connecting portions C3A and C3B, and the third projecting portions 62J and 62K are provided in the third connecting portions C3A and C3B. A mechanism movable along the first groove portions 25E and 25F is referred to as a first slide mechanism.

  In other words, in the first connecting portions C1A and C1B, the use position where the restricting plate 61 is the base end portion 61A on the upstream side in the discharge direction of the sheet S and the leading end portion 61B rises with respect to the sheet supporting portion 25, and the leading end portion 61B falls down. It can be said that the connecting portion connects the base end portion 61A of the regulating plate 61 and the sheet support portion 25 so as to be swingable between the storage positions.

  Moreover, 2nd connection part C2A, C2B is a connection part which connects the one end part of connection arm 62A, 62B and the front-end | tip part 61B side rather than the 1st connection part C1A in the control board 61, C1B, It can be said. Furthermore, the third connecting portions C3A and C3B are connecting portions that swingably connect the other end portions of the connecting arms 62A and 62B and the first connecting portions C1A and C1B in the seat support portion 25 in the discharge direction. It can be said that there is.

  In addition, any one of 1st connection part C1A, C1B, 2nd connection part C2A, C2B, or 3rd connection part C3A, C3B should just have a 1st slide mechanism. The first slide mechanism extends in the discharge direction of the sheet S when the regulation plate 61 is in the storage position. In addition, any one of the first connecting portions C1A, C1B, the second connecting portions C2A, C2B or the third connecting portions C3A, C3B that does not have the first slide mechanism is parallel to the first slide mechanism. What is necessary is just to have a mechanism. Among these, configurations other than the present embodiment will be described in Modifications 1 to 3.

  The connecting arms 62A and 62B are provided with hooks 64A and 64B having claw portions 64C and 64D that can be engaged with the receiving portions 25J and 25K, respectively. The claw portions 64C and 64D protrude rearward and engage with the peripheral portions on the rear side of the receiving portions 25J and 25K. Here, the parts constituted by the receiving portions 25J and 25K and the hooks 64A and 64B are referred to as locking portions L1 and L2.

  The locking portions L1 and L2 are engaged when the restriction plate 61 is in the storage position, and fixes the restriction plate 61 in the storage position. Specifically, as shown in FIGS. 5 to 7, when the restricting plate 61 swings from the use position toward the storage position and reaches the storage position, the first slide mechanism and the second slide mechanism perform the first operation. As the first protrusions 61F and 61G and the third protrusions 62J and 62K slide forward and return backward, the claws 64C and 64D engage with the receiving parts 25J and 25K.

  As described above, since the hooks 64A and 64B do not need to bend when the locking portions L1 and L2 are engaged, the hooks 64A and 64B can be prevented from being damaged.

  In addition to the configuration of the locking portions L1 and L2, the hook is provided on any one of the seat support portion 25, the restriction plate 61, or the connecting arms 62A and 62B, and is arranged in the sliding direction of the second slide mechanism. What is necessary is just the structure which has the nail | claw part which protruded. In this case, the receiving portion is provided on any one of the seat support portion 25, the restriction plate 61, or the connecting arms 62A and 62B, which is not provided with a hook, and can be configured to be engageable with the claw portion. .

  The urging members 63A and 63B are members that urge the third protrusions 62J and 62K rearward. In this embodiment, the urging members 63A and 63B are tension coil springs, the front ends thereof are fixed to the third protrusions 62J and 62K, and the rear ends are seat support surfaces in the vicinity of the first coupling portions C1A and C1B. It is being fixed to the fixing | fixed part 25L and 25M provided in 25A. As a result, as shown in FIG. 4, the urging members 63A and 63B pull the third protrusions 62J and 62K rearward, and the connecting arms 62A and 62B push up the restriction plate 61 by the second protrusions 62G and 62H. . Therefore, the urging members 63A and 63B urge the regulating plate 61 from the storage position toward the use position.

  As shown in FIG. 3, the urging members 63 </ b> A and 63 </ b> B are disposed at positions that are covered by the restriction plate 61 when the restriction plate 61 is in the storage position. Further, part of the urging members 63A and 63B are also covered by the upper plates 62E and 62F of the connecting arms 62A and 62B. Thereby, the user can operate the restricting plate 61 without touching the urging members 63A and 63B.

  The urging members 63A and 63B may be other than the tension coil spring, and may be a compression coil spring, for example, with the third protrusions 62J and 62K rearward.

  With the above configuration, the sheet stopper 6 can swing between the use position shown in FIG. 4 and the storage position shown in FIG.

  As shown in FIG. 4, the use position is a state in which the regulating plate 61 has risen so as to tilt forward and upward with the base end portion 61 </ b> A down and the tip end portion 61 </ b> B up. At this time, due to the urging force of the urging members 63A and 63B, the first protrusions 61F and 61G abut against the rear ends of the second grooves 25G and 25H, and the third protrusions 62J and 62K are the first grooves 25E and 25F. It is in contact with the rear end of.

  Then, when the restriction plate 61 is in the use position as shown in FIG. 4, with respect to a straight line SL1 passing through the center of the first protrusions 61F and 61G and the center of the third protrusions 62J and 62K when viewed from the right direction. The center of the second protrusions 62G and 62H is located on the upper side, which is one side. Therefore, the restriction plate 61 is biased in the direction from the storage position toward the use position.

  The position shown in FIG. 5 is a state in which the regulation plate 61 is between the use position and the storage position, and the hooks 64A and 64B are in contact with the sheet support surface 25A. At this time, the first protrusions 61F and 61G abut against the rear ends of the second grooves 25G and 25H by the urging force of the urging members 63A and 63B, and the third protrusions 62J and 62K are urged by the urging members 63A and 63K. It is located near the center of the first groove portions 25E and 25F against the urging force of 63B.

  The position shown in FIG. 6 is a state in which the regulation plate 61 is between the use position and the storage position, and the claw portions 64C and 64D are in contact with the receiving portions 25J and 25K. At this time, the first protrusions 61F and 61G are positioned near the center of the second grooves 25G and 25H against the urging force of the urging members 63A and 63B, and the third protrusions 62J and 62K are the first grooves 25E. , 25F near the front end. As described above, the first protrusions 61F and 61G and the third protrusions 62J and 62K slide forward, whereby the claw parts 64C and 64D can be engaged with the receiving parts 25J and 25K, and conversely, the receiving parts 25J and 25K. Can be separated from

  As shown in FIG. 7, the storage position is a state in which the regulation surface 61C is arranged along the sheet support surface 25A with the proximal end portion 61A of the regulation plate 61 as the rear side and the distal end portion 61B as the front side. At this time, the first protrusions 61F and 61G abut against the rear ends of the second grooves 25G and 25H by the urging force of the urging members 63A and 63B, and the third protrusions 62J and 62K are urged by the urging members 63A and 63K. It is located near the center of the first groove portions 25E and 25F against the urging force of 63B.

  Then, when the restriction plate 61 is in the storage position as shown in FIG. 7, with respect to a straight line SL1 passing through the center of the first protrusions 61F and 61G and the center of the third protrusions 62J and 62K when viewed from the right. The centers of the second protrusions 62G and 62H are located on the lower side, which is the other side. Therefore, the restriction plate 61 is fixed to the storage position.

  According to said structure, a toggle mechanism is comprised by the control board 61, connection arm 62A, 62B, 1st connection part C1A, C1B, 2nd connection part C2A, C2B, and 3rd connection part C3A, C3B. Is done. When the sheet S hits the restriction plate 61 at the use position when the sheet S is taken out from the sheet support portion 25 by this toggle mechanism, the restriction plate 61 is moved from the storage position toward the use position by the urging members 63A and 63B. Since it is biased, the regulating plate 61 moves toward the storage position, and after the sheet S is taken out, it returns to the original use position.

  Therefore, the user can easily pull out the sheet S discharged to the sheet support portion 25 without the sheet stopper 6 being in the way. Further, the restriction plate 61 is fixed when moved to the storage position by the toggle mechanism. Therefore, the user can store the sheet stopper 6 as necessary.

[Operation of sheet stopper]
The operation of the sheet stopper 6 will be described with reference to FIGS. As shown in FIG. 4, in a state where the sheet stopper 6 is in the use position, when the user puts a finger on the tip 61B of the restriction plate 61 and pushes down the restriction plate 61, the restriction plate 61 moves from the use position toward the storage position. Fall down. At this time, the first protrusions 61F and 61G rotate while being in contact with the rear ends of the second grooves 25G and 25H by the urging force of the urging members 63A and 63B. The third protrusions 62J and 62K move forward along the first grooves 25E and 25F against the urging force of the urging members 63A and 63B from the state in contact with the rear ends of the first grooves 25E and 25F. To do.

  Then, as shown in FIG. 5, the hooks 64A and 64B are in contact with the sheet support surface 25A. When the restricting plate 61 is further pushed down from here, the first protrusions 61F and 61G move forward along the second grooves 25G and 25H against the urging force of the urging members 63A and 63B, and the third protrusions The parts 62J and 62K move forward along the first groove parts 25E and 25F. That is, the restriction plate 61 moves forward. As a result, the hooks 64A and 64B also move forward, and the claw portions 64C and 64D move forward and downward while abutting against the peripheral portions on the rear side of the receiving portions 25J and 25K.

  Then, as shown in FIG. 6, the claw portions 64C and 64D are in contact with the receiving portions 25J and 25K. When the restricting plate 61 is further pushed down from here, the claw portions 64C and 64D move below the receiving portions 25J and 25K, and the state shown in FIG. 7 is obtained. At this time, due to the urging force of the urging members 63A and 63B, the first protrusions 61F and 61G move rearward along the second grooves 25G and 25H, and the third protrusions 62J and 62K move to the first grooves 25E and 25F. Move backwards along. That is, the restricting plate 61 moves backward. As a result, the hooks 64A and 64B are also moved rearward, the claw portions 64C and 64D are engaged with the receiving portions 25J and 25K, and the restriction plate 61 is fixed at the storage position.

  When shifting from the state of FIG. 6 to the state of FIG. 7, the centers of the second protrusions 62G and 62H cross the straight line SL1 from the top to the bottom, and are located below the straight line SL1 in the storage position of FIG. Therefore, the restricting plate 61 is fixed at the storage position according to the principle of the toggle mechanism.

  On the other hand, when the sheet stopper 6 is moved from the storage position to the use position, the operation is the reverse of the above operation, and thus detailed description thereof is omitted. In the state where the sheet stopper 6 is in the storage position as shown in FIG. 7, when the user puts a finger on the tip 61B of the regulation plate 61 and pulls up the regulation plate 61, the regulation plate 61 rises from the storage position, and then Can be moved to the use position with a small force by the urging force of the urging members 63A and 63B.

[Modification 1]
8 is a cross-sectional view of the vicinity of the sheet stopper 7 according to the first modification in the use position, FIG. 9 is a cross-sectional view around the sheet stopper 7 according to the first modification between the use position and the storage position, and FIG. FIG. 10 is a cross-sectional view of the vicinity of a sheet stopper 7 according to a first modification.

  As shown in FIG. 8, in the first modification, the first groove portion 25N, the urging member 73A, and the locking portion L3 are different from the above embodiment. Since the configuration on the left side of the sheet stopper 7 which is the opposite side is symmetrical to the configuration on the right side, the description is omitted here, not shown. Moreover, about the structure similar to said embodiment, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted. These omissions are the same in the following modifications.

  The first groove 25N is disposed on the right wall surface 25C of the recess 25B adjacent to the front end of the second groove 25G. The first groove portion 25N is a groove portion that penetrates in the left-right direction and extends linearly in the front-rear direction.

  The urging member 73A is a tension coil spring that urges the third protrusion 62J forward. The rear end portion of the urging member 73A is fixed to the third projecting portion 62J, and the front end portion is fixed to a fixing portion 25P provided on the sheet support surface 25A. Thereby, as shown in FIG. 8, the urging member 73A pulls the third protrusion 62J forward, and the connecting arm 62A pushes up the restricting plate 61 with the second protrusion 62G. Therefore, the urging member 73A urges the restriction plate 61 from the storage position toward the use position.

  The locking portion L3 includes a receiving portion 25Q provided on the sheet support surface 25A of the concave portion 25B and a hook 74A provided on the regulation plate 61. The receiving portion 25Q is an L-shaped member that protrudes upward from the seat support surface 25A. The hook 74A protrudes from the surface opposite to the restricting surface 61C of the restricting plate 61, and has a claw portion 74C that can be engaged with the receiving portion 25Q at the bent end.

  As shown in FIG. 8, in a state where the regulating plate 61 is in the use position, the first projecting portion 61F abuts on the front end portion of the second groove portion 25G by the urging force of the urging member 73A, and the third projecting portion 62J is It is in contact with the front end of the first groove 25N. In FIG. 8, when viewed from the right, the center of the second protrusion 62G is positioned on the upper side, which is one side, with respect to the straight line SL2 passing through the center of the first protrusion 61F and the center of the third protrusion 62J. . Therefore, the restriction plate 61 is biased in the direction from the storage position toward the use position.

  As shown in FIG. 9, in a state where the regulating plate 61 is between the use position and the storage position, the first protrusion 61F abuts against the front end of the second groove 25G by the biasing force of the biasing member 73A. Yes. The third protrusion 62J is positioned near the center of the first groove 25N against the urging force of the urging member 73A.

  As shown in FIG. 10, in the state where the regulation plate 61 is in the storage position, the first protrusion 61F abuts against the front end of the second groove 25G by the urging force of the urging member 73A, and the third protrusion 62J The first groove portion 25N is positioned near the rear end portion against the biasing force of the biasing member 73A. In FIG. 10, when viewed from the right, the center of the second protrusion 62G is located on the lower side with respect to the straight line SL2 passing through the center of the first protrusion 61F and the center of the third protrusion 62J. To do. Therefore, the restriction plate 61 is fixed to the storage position.

  The operation of the sheet stopper 7 will be described with reference to FIGS. As shown in FIG. 8, in a state where the sheet stopper 7 is in the use position, when the user puts a finger on the tip 61B of the restriction plate 61 and pushes down the restriction plate 61, the restriction plate 61 moves from the use position toward the storage position. Fall down. At this time, the first projecting portion 61F rotates while being in contact with the front end portion of the second groove portion 25G by the urging force of the urging member 73A. The third projecting portion 62J moves rearward along the first groove portion 25N against the urging force of the urging member 73A from the state in contact with the front end portion of the first groove portion 25N.

  Then, when the restricting plate 61 is further pushed down from here, when the claw portion 74C is engaged with the receiving portion 25Q, the first projecting portion 61F and the urging force of the urging member 73A are resisted. The third protrusion 62J once moves backward, and then returns to the front by the urging force of the urging member 73A. That is, the restricting plate 61 once moves backward and returns to the front. Thereby, as shown in FIG. 10, the latching | locking part L2 engages and the control board 61 is fixed in a storage position.

  When shifting from the state of FIG. 9 to the state of FIG. 10, the center of the second protrusion 62G crosses the straight line SL2 from the top to the bottom, and is located below the straight line SL2 in the storage position of FIG. Therefore, the restricting plate 61 is fixed at the storage position according to the principle of the toggle mechanism.

  On the other hand, when the sheet stopper 7 is moved from the storage position to the use position, the operation is the reverse of the above operation, and thus detailed description thereof is omitted. The same effects as those of the above-described embodiment can be obtained by the configuration of Modification 1 as described above.

[Modification 2]
11 is a cross-sectional view of the vicinity of the sheet stopper 8 of the second modification in the use position, FIG. 12 is a cross-sectional view of the vicinity of the sheet stopper 8 of the second modification between the use position and the storage position, and FIG. FIG. 10 is a cross-sectional view around a sheet stopper 8 according to a second modification.

  As shown in FIG. 11, in the second modification, the first groove 25R, the second groove 25S, the urging member 83A, and the locking portion L3 are different from the above embodiment. The locking portion L3 has the same configuration as that of the first modification. Modification 2 is also different from the above embodiment in that the first connecting portion C1C has the first slide mechanism and the third connecting portion C3C has the second slide mechanism.

  The first groove portion 25R is a groove portion formed in the right wall surface 25C of the recess 25B so as to penetrate in the left-right direction and extend linearly in the front-rear direction. And the 3rd connection part C3C comprised by the 1st groove part 25R and the 3rd projection part 62J has a 2nd slide mechanism.

  The second groove 25S is a groove formed in the right wall surface 25C of the recess 25B so as to penetrate in the left-right direction and extend linearly in the front-rear direction. The second groove portion 25S is arranged behind the first groove portion 25R and in parallel with the first groove portion 25R. And the 1st connection part C1C comprised by the 2nd groove part 25S and the 1st projection part 61F has a 1st slide mechanism.

  The biasing member 83A is a tension coil spring that biases the vicinity of the first protrusion 61F of the restriction plate 61 forward. The rear end portion of the urging member 83A is fixed in the vicinity of the first protrusion 61F on the rib 61D of the regulating plate 61, and the front end portion is fixed to a fixing portion 25P provided on the sheet support surface 25A. Accordingly, as shown in FIG. 11, the urging member 83A pulls the vicinity of the first protrusion 61F forward, and the connecting arm 62A pushes up the restricting plate 61 by the second protrusion 62G. Therefore, the urging member 83A urges the restriction plate 61 from the storage position toward the use position.

  As shown in FIG. 11, in a state where the restricting plate 61 is in the use position, the first projecting portion 61F comes into contact with the front end portion of the second groove portion 25S by the urging force of the urging member 83A, and the third projecting portion 62J is It is in contact with the front end of the first groove 25R. In FIG. 1, when viewed from the right, the center of the second protrusion 62G is located on one side with respect to the straight line SL3 passing through the center of the first protrusion 61F and the center of the third protrusion 62J. . Therefore, the restriction plate 61 is biased in the direction from the storage position toward the use position.

  As shown in FIG. 12, in a state where the regulating plate 61 is between the use position and the storage position, the first protrusion 61F is located near the center of the second groove 25S against the urging force of the urging member 83A. positioned. The third projecting portion 62J is in contact with the front end portion of the first groove portion 25R by the urging force of the urging member 83A.

  As shown in FIG. 13, in the state where the restricting plate 61 is in the storage position, the first protrusion 61F is positioned near the rear end of the second groove 25S against the urging force of the urging member 83A. The three projecting portions 62J are in contact with the front end portion of the first groove portion 25R by the urging force of the urging member 83A. In FIG. 13, when viewed from the right, the center of the second protrusion 62G is located on the lower side with respect to the straight line SL3 passing through the center of the first protrusion 61F and the center of the third protrusion 62J. To do. Therefore, the restriction plate 61 is fixed to the storage position.

  The operation of the sheet stopper 8 will be described with reference to FIGS. As shown in FIG. 11, in a state where the sheet stopper 8 is in the use position, when the user puts a finger on the tip 61B of the restriction plate 61 and pushes down the restriction plate 61, the restriction plate 61 moves from the use position toward the storage position. Fall down. At this time, the first protrusion 61F moves rearward along the second groove 25S against the urging force of the urging member 83A from the state in contact with the front end of the second groove 25S. The third projecting portion 62J rotates while being in contact with the front end portion of the first groove portion 25R by the urging force of the urging member 83A.

  Then, when the restricting plate 61 is further pushed down from here, when the claw portion 74C is engaged with the receiving portion 25Q, the first projecting portion 61F and the urging force of the urging member 83A are resisted. The third protrusion 62J once moves backward, and then returns to the front by the urging force of the urging member 83A. That is, the restricting plate 61 once moves backward and returns to the front. Thereby, as shown in FIG. 13, the latching | locking part L3 engages and the control board 61 is fixed in a storage position.

  When shifting from the state of FIG. 12 to the state of FIG. 13, the center of the second protrusion 62G crosses the straight line SL3 from the top to the bottom, and is located below the straight line SL3 in the storage position of FIG. Therefore, the restricting plate 61 is fixed at the storage position according to the principle of the toggle mechanism.

  On the other hand, when the sheet stopper 8 is moved from the storage position to the use position, the operation is the reverse of the above operation, and thus detailed description thereof is omitted. The effect similar to that of the above-described embodiment can be obtained by the configuration of Modification 2 as described above.

[Modification 3]
14 is a cross-sectional view of the vicinity of the sheet stopper 9 according to Modification 3 in the use position, FIG. 15 is a cross-sectional view of the vicinity of the sheet stopper 9 according to Modification 3 between the use position and the storage position, and FIG. FIG. 10 is a cross-sectional view around a sheet stopper 9 according to a third modification.

  As shown in FIG. 14, in the third modification, the first groove portion 91F, the second groove portion 91G, and the urging member 93A are arranged on the restricting plate 91, and the first protrusion portion 25T and the hole portion 25U are arranged on the right side of the concave portion 25B. It differs from the above embodiment in that it is arranged on the wall surface 25C. That is, in the third modification, the configuration related to the toggle mechanism in the first modification is arranged upside down. Further, the hook 25V and the receiving portion 91E of the locking portion L4 are also arranged upside down.

  As shown in FIGS. 14 to 16, a first protrusion 25T and a hole 25U are formed on the right wall surface 25C of the recess 25B. The first protrusion 25T is a columnar protrusion extending leftward from the vicinity of the rear end of the right wall surface 25C. The hole 25U is a cylindrical through-hole penetrating in the left-right direction. A hook 25V having a claw portion 25W is provided on the sheet support surface 25A of the recess 25B. The claw portion 25W protrudes rearward.

  The restriction plate 91 has a proximal end portion 91A and a distal end portion 91B as in the above embodiment. The restricting plate 91 has a restricting surface 91C, a rib 91D, and an L-shaped receiving portion 91E formed in the vicinity of the distal end portion 91B. The receiving portion 91E and the hook 25V constitute a locking portion L4. The rib 91D includes a first groove 91F that penetrates in the left-right direction and extends linearly in parallel with the regulation surface 91C, and a second groove 91G that is parallel to the first groove 91F on the proximal end 91A side from the first groove 91F. And are formed.

  The connecting arm 92A includes a substantially triangular plate member 92B, a second protrusion 92C formed at one end of the plate member 92B, and a third protrusion 92D formed at the other end of the plate member 92B. have. The second protrusion 92C formed on the left side surface of the plate-like member 92B is a columnar protrusion extending leftward, and is rotatable and movable by being inserted into the first groove 91F. On the other hand, the third protrusion 92D formed on the right side surface of the plate-like member 92B is a columnar protrusion extending in the right direction, and is rotatable by being inserted through the hole 25U.

  Here, the connecting portion constituted by the first protrusion 25T and the second groove 91G is referred to as a first connecting portion C1D, and the first protrusion 25T is movable along the second groove 91G in the first connecting portion C1D. The mechanism is a second slide mechanism. In addition, a connecting portion constituted by the second projecting portion 92C and the first groove portion 91F is referred to as a second connecting portion C2D, and the second projecting portion 92C is movable along the first groove portion 91F in the second connecting portion C2D. Is a first slide mechanism. In addition, a connecting portion constituted by the third projecting portion 92D and the hole portion 25U is referred to as a third connecting portion C3D.

  In other words, the first connecting portion C1D is a storage in which the restricting plate 91 is located at the upstream side in the discharge direction of the sheet S with the base end portion 91A and the front end portion 91B rises with respect to the sheet support portion 25 and the front end portion 91B falls down. It can be said that the connecting portion connects the base end portion 91A of the restricting plate 91 and the sheet support portion 25 so as to be swingable between positions.

  Moreover, it can be said that 2nd connection part C2D is a connection part which connects the one end part of connection arm 92A, and the front-end | tip part 91B side rather than 1st connection part C1D in the control board 91 so that rocking | fluctuation is possible. Furthermore, it can be said that the third connecting portion C3D is a connecting portion that rotatably connects the other end portion of the connecting arm 92A and the downstream side in the discharge direction with respect to the first connecting portion C1D in the seat support portion 25.

  The urging member 93 </ b> A is a tension coil spring that urges the vicinity of the second protrusion 92 </ b> C in the connecting arm 92 </ b> A toward the tip of the restriction plate 91. The rear end portion of the urging member 93A is fixed in the vicinity of the second projecting portion 92C of the connecting arm 92A, and the front end portion is fixed near the front end portion of the rib 91D. Thereby, as shown in FIG. 14, the urging member 93A pulls the vicinity of the second protrusion 92C toward the front, and the connecting arm 92A pushes up the restriction plate 91 by the second protrusion 92C. Therefore, the urging member 93A urges the restriction plate 91 from the storage position toward the use position.

  As shown in FIG. 14, in a state where the restricting plate 91 is in the use position, the first projecting portion 25T comes into contact with the rear end portion of the second groove portion 91G by the urging force of the urging member 93A, and the second projecting portion 92C. Is in contact with the front end of the first groove 91F. In FIG. 14, when viewed from the right, the center of the second protrusion 92C is located on the upper side of the straight line SL4 passing through the center of the first protrusion 25T and the center of the third protrusion 92D. . Therefore, the restriction plate 91 is biased in the direction from the storage position toward the use position.

  As shown in FIG. 15, in a state where the regulating plate 91 is between the use position and the storage position, the first protrusion 25T abuts on the rear end portion of the second groove portion 91G by the urging force of the urging member 93A. ing. The second protrusion 92C is located near the center of the first groove 91F against the urging force of the urging member 83A.

  As shown in FIG. 16, in a state where the restricting plate 91 is in the storage position, the first projecting portion 25T abuts on the rear end portion of the second groove portion 91G by the urging force of the urging member 93A, and the second projecting portion 92C. Is positioned near the rear end of the first groove 91F against the biasing force of the biasing member 83A. In FIG. 16, when viewed from the right, the center of the second projecting portion 92C is located on the lower side with respect to the straight line SL4 passing through the center of the first projecting portion 25T and the center of the third projecting portion 92D. To do. Therefore, the restriction plate 91 is fixed to the storage position.

  The operation of the sheet stopper 9 will be described with reference to FIGS. As shown in FIG. 14, when the user puts a finger on the tip 91B of the restriction plate 91 and pushes down the restriction plate 91 with the sheet stopper 8 in the use position, the restriction plate 91 moves from the use position toward the storage position. Fall down. At this time, the first projecting portion 25T rotates while being in contact with the rear end portion of the second groove portion 91G by the urging force of the urging member 93A. The second protrusion 92C moves rearward along the first groove 91F by the urging force of the urging member 93A.

  Then, when the restriction plate 91 is further pushed down from here, when the claw portion 25W engages with the receiving portion 91E, the first groove portion 91F and the first groove portion 91F and the first groove portion 91A are resisted against the urging force of the urging member 93A. The two groove portions 91G once move backward, and then return to the front by the urging force of the urging member 93A. That is, the restricting plate 91 once moves backward and returns to the front. Thereby, as shown in FIG. 16, the latching | locking part L4 engages and the control board 61 is fixed in a storage position.

  When shifting from the state of FIG. 15 to the state of FIG. 16, the center of the second protrusion 92C crosses the straight line SL4 from the top to the bottom, and is located below the straight line SL4 in the storage position of FIG. Therefore, the restricting plate 91 is fixed at the storage position according to the principle of the toggle mechanism.

  On the other hand, when the sheet stopper 9 is moved from the storage position to the use position, the operation is the reverse of the above operation, and thus detailed description thereof is omitted. The effect similar to that of the above-described embodiment can be obtained by the configuration of the third modification. In addition, the structure which arrange | positions the structure regarding a toggle mechanism upside down like the modification 3 is applicable also to said embodiment and the modification 2. FIG.

[Modification 4]
FIG. 17 is a cross-sectional view of the periphery of the sheet stopper 10 according to Modification 4 in the use position. The modification 4 differs in said 1st groove part 25X from said embodiment. Other configurations are the same as those in the above embodiment. The first groove portion 25X has a shape in which a rear end portion is curved downward. Specifically, the first groove portion 25X has a shape that horizontally extends rearward from the front end portion thereof and is curved downward at a curved portion 25Y near the rear end portion. The lower surface from the curved portion 25 to the rear end portion is an inclined surface 25Z.

  As shown in FIG. 17, in a state where the restricting plate 61 is in the use position, the first projecting portion 61F comes into contact with the front end portion of the second groove portion 25G by the urging force of the urging member 63A, and the third projecting portion 62J is It is in contact with the rear end of the first groove 25X. When the user puts a finger on the tip end portion 61B of the restriction plate 61 and pushes down the restriction plate 61 from this state, the restriction plate 61 falls from the use position toward the storage position. At this time, the first projecting portion 61F rotates while being in contact with the rear end portion of the second groove portion 25G by the urging force of the urging member 63A.

  On the other hand, the third protrusion 62J moves forward along the first groove 25X against the urging force of the urging member 63A from the state in contact with the rear end of the first groove 25X. That is, the third protrusion 62J must move on the inclined surface. Therefore, a larger resistance is generated than when moving on a horizontal plane. In other words, the third protrusion 62J does not move unless a large force is applied, and is stably held in contact with the rear end of the first groove 25X. That is, the regulation plate 61 is stably held at the storage position. Therefore, even if a biasing member having a small biasing force is used, the restricting plate can be stably held at the use position.

  The first groove portion 25X may have a shape in which the rear end portion is curved upward. Further, the shape of the first groove portion 25X can be applied as long as it is a groove portion having a first slide mechanism. To summarize these configurations, in the groove portion having the first slide mechanism, one end portion of the groove portion where the projection portion is located when the restriction plate is in the use position is bent in one direction in which the restriction plate swings. It can be said that it is a shape.

[Others]
In the above-described embodiment and Modifications 1 to 4, the sheet stopper is configured to include two sets of symmetrical toggle mechanisms. However, it may be configured to include at least one of the toggle mechanisms.

  In the multifunction machine 1, a sheet stopper 54 is provided on the document discharge tray 53 of the ADF 5. The seat stopper 54 can also have the same configuration as the seat stopper 6 of the sheet support portion 25, and the configurations of the first to fourth modifications can also be applied.

[Effect of the embodiment]
The multifunction machine 1 according to the above embodiment includes a discharge mechanism 24 that discharges the sheet S and a sheet support unit 25 that supports the sheet S discharged by the discharge mechanism 24. The multifunction machine 1 also includes a sheet stopper that includes a regulating plate 61 that regulates the downstream end of the sheet S in the discharge direction, a connecting arm 62A that couples the regulating plate 61 and the sheet support unit 25, and an urging member 63A. Is provided. Further, the multifunction device 1 swings between a use position where the restriction plate 61 is the base end portion 61A on the upstream side in the discharge direction and the front end portion 61B rises with respect to the sheet support portion 25 and a storage position where the front end portion 61B falls. A first connecting portion C1A that connects the base end portion 61A of the regulating plate 61 and the sheet support portion 25 is provided so as to be possible. In addition, the multifunction machine 1 includes a second connecting portion C2A that rotatably connects one end portion of the connecting arm 62A and the distal end portion 61B side of the first connecting portion C1A of the regulating plate 61. In addition, the multifunction machine 1 includes a third connecting portion C3A that rotatably connects the other end of the connecting arm 62A and the downstream side of the sheet support portion 25 in the discharge direction with respect to the first connecting portion C1A. The urging member 63A urges the restriction plate 61 from the storage position toward the use position. Any one of the first connecting part C1A, the second connecting part C2A, or the third connecting part C3A has a first slide mechanism, and the first slide mechanism discharges the sheet S when the regulating plate 61 is in the storage position. Extend in the direction. When the restriction plate 61 is in the use position as viewed in the direction along the swing axis of the first connection portion C1A, the control plate 61 passes through the swing shaft of the first connection portion C1A and the rotation shaft of the third connection portion C3A. When the rotation shaft of the second connecting portion C2A is located on one side with respect to the straight line SL1 and the restricting plate 61 is in the storage position, the swing shaft of the first connecting portion C1A and the rotating shaft of the third connecting portion C3A. The rotation axis of the second connecting portion C2A is located on the other side with respect to a straight line passing through

  According to this configuration, the restriction plate 61, the connecting arm 62A, the first connecting portion C1A, the second connecting portion C2A, and the third connecting portion C3A constitute a toggle mechanism. When the sheet S hits the restriction plate 61 in the use position when the sheet S is taken out from the sheet support portion 25, the restriction plate 61 is urged from the storage position to the use position by the urging member 62A. Therefore, after the regulation plate 61 moves toward the storage position and the sheet S is taken out, it returns to the original use position. Therefore, the user can easily pull out the sheet S discharged to the sheet support portion 25 without the sheet stopper 6 being in the way. Further, the restriction plate 61 is fixed when moved to the storage position. Therefore, the user can store the sheet stopper 6 as necessary.

  In addition, according to the multi-function machine 1 according to the above-described embodiment, the latching portion L1 that engages when the restriction plate 61 is in the storage position and fixes the restriction plate 61 in the storage position is provided, and has the first slide mechanism. Any one of the first connecting part C1A, the second connecting part C2A, or the third connecting part C3A does not have a second slide mechanism parallel to the first slide mechanism. When the regulation plate 61 reaches the storage position, the locking portion L1 is engaged by the movement of the first slide mechanism and the second slide mechanism.

  According to this configuration, by having the second slide mechanism, it is not necessary for the locking portion L1 to bend when the locking portion L1 is engaged, so that the breakage of the locking portion L1 can be suppressed.

  In addition, according to the multifunction machine 1 according to the above-described embodiment, the locking portion L1 is provided on any one of the sheet support portion 25, the restriction plate 61, and the connecting arm 62A, and protrudes in the sliding direction of the second slide mechanism. The hook 64A has the claw portion 64C. The locking portion L1 includes a receiving portion 25J that is provided on any one of the seat support portion 25, the restricting plate 61, and the connecting arm 62A that is not provided with the hook 64A, and that can be engaged with the claw portion 64C.

  According to this configuration, the locking portion L1 can be realized with a simple configuration.

  Further, according to the MFP 1 according to the above-described embodiment, the urging member 63A is disposed at a position covered by the restriction plate 61 when the restriction plate 61 is in the storage position.

  According to this configuration, since the urging member 63A is covered with the restriction plate 61, the user can operate the restriction plate 61 without touching the urging member 63A.

  Further, according to the multifunction device 1 according to the above-described embodiment, the urging member 63A is disposed at a position covered by the connecting arm 62A when the regulating plate 61 is in the storage position.

  According to this configuration, since the urging member 63A is covered with the connecting arm 62A, the user can operate the regulating plate 61 without touching the urging member 63A.

  Further, according to the multifunction machine 1 according to the above-described embodiment, the first slide mechanism includes a protrusion provided on one of the members to be connected, a groove provided on the other of the members to be connected, and guiding the protrusion. Have In addition, when the restricting plate 61 is in the use position, one end of the groove portion where the protruding portion is located has a shape curved toward one side in the direction in which the restricting plate 61 swings.

  According to this configuration, when the restricting plate 61 is moved from the use position, a larger resistance is generated than during the movement. Therefore, the restricting plate 61 is stably held at the use position even when a biasing member having a small biasing force is used. be able to.

  Further, according to the multifunction device 1 according to the above-described embodiment, the image forming unit 23, the transport mechanism 22 that transports the sheet S to the image forming unit 23, the lower housing 2 that accommodates the image forming unit 23, and the lower housing 2 are disposed above. The upper housing 3 that accommodates the image reading unit 33, the ADF 5 that is disposed above the upper housing 3 and conveys a sheet as a document to the image reading unit 33, and the lower housing 2 and / or the ADF 5 are provided. Sheet stopper 6.

  According to this configuration, the sheet stopper 6 can be applied to the lower casing 2 or the ADF 5 of the multifunction machine 1.

1 MFP 2 Lower housing 3 Upper housing 5 ADF (Auto Document Feeder)
6 Sheet stopper 22 Conveying mechanism 23 Image forming unit 24 Discharging mechanism 25 Sheet support unit 25A Sheet support surface 25J Receiving unit 25X First groove (groove)
61 Restriction plate 61A Base end portion 61B Tip end portion 62A Connection arm 62J Third protrusion (protrusion)
63A urging member 64A hook 64C claw part C1A first connection part C2A second connection part C3A third connection part L1 locking part S sheet SL1 straight line

Claims (8)

A discharge mechanism for discharging the sheet;
A sheet support portion for supporting the sheet discharged by the discharge mechanism;
A sheet stopper that includes a regulating plate that regulates the downstream end portion in the sheet discharge direction, a coupling arm that couples the regulating plate and the sheet support portion, and an urging member;
The restriction plate is configured to be swingable between a use position in which the leading end rises with respect to the sheet support portion with the upstream side in the discharge direction as a base end and a storage position in which the leading end is tilted. A first connecting portion that connects the base end portion and the sheet support portion;
A second connecting portion that rotatably connects the one end of the connecting arm and the tip end side of the first connecting portion of the restriction plate;
A third connection part that rotatably connects the other end of the connection arm and the downstream side in the discharge direction from the first connection part of the sheet support part,
The biasing member biases the restriction plate from the storage position toward the use position,
Any one of the first connecting part, the second connecting part or the third connecting part has a first slide mechanism,
The first slide mechanism extends in a sheet discharge direction when the restriction plate is in the storage position,
Looking in the direction along the swing axis of the first connecting part,
When the restriction plate is in the use position, the rotation shaft of the second connection portion is on one side with respect to a straight line passing through the swing shaft of the first connection portion and the rotation shaft of the third connection portion. Position to,
When the restriction plate is in the storage position, the rotation shaft of the second connection portion is on the other side with respect to a straight line passing through the swing shaft of the first connection portion and the rotation shaft of the third connection portion. A seat support device, wherein the seat support device is positioned. A locking portion that engages when the restriction plate is in the storage position and fixes the restriction plate to the storage position;
Any one of the first connecting portion, the second connecting portion, or the third connecting portion that does not have the first slide mechanism has a second slide mechanism that is parallel to the first slide mechanism,
2. The seat support device according to claim 1, wherein when the restriction plate reaches the storage position, the locking portion is engaged by movement of the first slide mechanism and the second slide mechanism. . The locking portion is
A hook provided on any one of the seat support part, the restriction plate or the connecting arm, and having a claw part protruding in a sliding direction of the second slide mechanism;
A receiving portion that is provided on any one of the seat support portion, the restriction plate, or the connecting arm, and is not provided with the hook, and is engageable with the claw portion. The sheet support apparatus according to 2.   The seat support according to any one of claims 1 to 3, wherein the urging member is disposed at a position covered with the restriction plate when the restriction plate is in the storage position. apparatus.   5. The seat support according to claim 1, wherein the urging member is disposed at a position covered by the connection arm when the restricting plate is at the storage position. apparatus. The first slide mechanism has a protrusion provided on one of the members to be connected, and a groove provided on the other of the members to be connected to guide the protrusion.
The one end of the groove where the protrusion is located when the restricting plate is in the use position has a shape curved toward one direction in which the restricting plate swings. The sheet support apparatus according to any one of claims 5 to 6. The sheet support apparatus according to any one of claims 1 to 6,
An image forming unit;
An image forming apparatus comprising: a transport mechanism that transports a sheet to the image forming unit. An image forming unit, a conveyance mechanism for conveying a sheet to the image forming unit, and a lower housing for accommodating the sheet forming unit;
An upper casing disposed above the lower casing and containing an image reading unit;
An auto document feeder that is disposed above the upper housing and conveys a sheet as a document to the image reading unit;
A multi-function machine comprising: the lower case and / or the sheet support device according to any one of claims 1 to 6 provided in the auto document feeder.

Images