Fastening structure, device, medium conveying device, recording device, and fastening method

Abstract

To restrain the influence of deformation associated with a difference in expansion rates between a first member and a second member having different linear expansion coefficients.SOLUTION: A fastening structure 100 comprises a first member 110, a second member 150, and a fastening part 120 fastening the first member 110 and the second member 150. The fastening part 120 is fitted to the first member 110 by inserting a fitting tool 130 along a second insertion direction W, fastened to the second member 150 by inserting a fastening tool 145 or 146 along a surface direction of a flat surface part 111, and relatively movable with respect to the first member 110 in the surface direction.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a fastening structure, an apparatus, a medium transport apparatus, a recording apparatus, and a fastening method. [Background technology]

[0002] Conventionally, a first member and a second member having different linear expansion coefficients are fastened together. In such a case, in order to deal with deformation caused by thermal expansion, it is necessary to fasten the first member and the second member so that they can slide relatively. Therefore, for example, Patent Document 1 discloses a configuration in which an insertion hole is opened slightly larger than the outer diameter of the first cylindrical part of the shoulder screw, so that an exterior cover can slide relatively to the shoulder screw. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-58548 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a configuration for fastening a first member and a second member having different linear expansion coefficients, it may be desirable to insert a fastener along the surface direction of the first member and the second member. However, since thermal deformation is mainly affected by the surface direction, in such a case, a configuration in which the diameter of the screw hole is made larger than the diameter of the screw shaft as disclosed in Patent Document 1 may not be sufficient to deal with the configuration in which the fastener is inserted along the surface direction of the first member and the second member. In other words, in a configuration in which the fastener is inserted along the surface direction of the first member and the second member, there is a risk that the influence of deformation caused by the difference in the expansion coefficient between the first member and the second member having different linear expansion coefficients may not be fully suppressed. [Means for solving the problem]

[0005] In order to solve the above problem, the fastening structure of the present invention comprises a first member having a planar portion, a second member formed of a member having a linear expansion coefficient different from that of the first member and arranged along a surface direction of the planar portion, and a fastening portion that fastens the first member and the second member by inserting a fastener in a first insertion direction along the surface direction, wherein the fastening portion is attached to the first member by inserting a mounting tool along a second insertion direction that intersects the surface direction, and is fastened to the second member by inserting the fastener along the first insertion direction, and is movable relative to the first member in the surface direction.

[0006] In addition, in order to solve the above-mentioned problems, a fastening method of the present invention is a fastening method for fastening a first member having a flat portion and a second member having a different linear expansion coefficient from the first member and arranged along the flat direction of the flat portion via a fastening part by inserting a fastener in a first insertion direction, which is a direction along the flat direction of the flat portion of the first member, and is characterized in that it has the steps of: attaching the fastening part to be movable relative to the first member in the flat direction by inserting a mounting tool in a second phase direction intersecting the flat direction relative to the fastening part and the first member; aligning the second member with the first member; and fastening the fastening part and the second member by inserting the fastener in the first insertion direction relative to the fastening part and the second member. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram illustrating a medium transport path of a printer equipped with a fastening structure according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view illustrating the appearance of the printer in FIG. [Diagram 3] FIG. 2 is a perspective view showing the printer in FIG. 1 with a side door open. [Figure 4] 2 is a side view showing the outside of the side door of the printer in FIG. 1 with the supply tray removed. FIG. [Diagram 5] FIG. 2 is a plan view showing the upper side of the side door of the printer in FIG. 1 . [Figure 6]FIG. 2 is a side view showing the inside of the side door of the printer in FIG. 1. [Figure 7] FIG. 2 is a perspective view showing a part of the inside of the side door of the printer in FIG. 1 . [Figure 8] FIG. 2 is a perspective view showing a fastening portion and a cover of the printer in FIG. [Figure 9] 2 is a perspective view showing a front frame and a cover around a fastening portion of the printer in FIG. 1. [Figure 10] FIG. 2 is a perspective view showing a fastening portion and a front frame of the printer in FIG. [Figure 11] FIG. 2 is a perspective view showing a fastening portion of the printer in FIG. 1 . [Figure 12] 2 is a perspective view showing the periphery of a restricting portion that restricts a fastening portion in the cover of the printer in FIG. 1. FIG. [Figure 13] 2A and 2B are perspective cross-sectional views illustrating a state before and after a fastener is closed in the printer in FIG. 1 . [Figure 14] 14 is a perspective cross-sectional view taken at a position different from that of FIG. 13, illustrating the printer of FIG. 1 in a state before and after the fastener is closed. [Figure 15] 2 is a perspective cross-sectional view showing the periphery of a fastener of the fastening portion of the printer in FIG. 1 . [Figure 16] FIG. 2 is a perspective view illustrating the periphery of a positioning portion of a rear frame of the printer in FIG. 1. [Figure 17] FIG. 2 is a perspective view illustrating the periphery of a positioning portion of a front frame of the printer in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The present invention will now be briefly described. The fastening structure of the first aspect comprises a first member having a planar portion, a second member formed of a member having a linear expansion coefficient different from that of the first member and arranged along a surface direction of the planar portion, and a fastening portion that fastens the first member and the second member by inserting a fastener in a first insertion direction along the surface direction, wherein the fastening portion is attached to the first member by inserting a mounting tool along a second insertion direction that intersects the surface direction, and is fastened to the second member by inserting the fastener along the first insertion direction, and is movable relative to the first member in the surface direction.

[0009] According to this aspect, the fastening portion for fastening the first member and the second member is attached to the first member, and is fastened to the second member by inserting a fastener along the surface direction, and is movable relative to the first member in the surface direction. That is, in a configuration in which the fastener is inserted along the surface direction of the first member and the second member, even if a difference in deformation occurs between the first member and the second member due to thermal expansion or the like, the second member and the fastening portion move relative to the first member, so that the difference can be absorbed. Therefore, the influence of deformation due to the difference in the expansion coefficient between the first member and the second member, which have different linear expansion coefficients, can be suppressed.

[0010] A fastening structure of a second aspect is an aspect dependent on the first aspect, and is characterized in that the fastening portion has an engaging portion that is engageable with the first member.

[0011] According to this aspect, the fastening portion has an engagement portion that can engage with the first member. With this configuration, the engagement portion determines the rough position of the fastening portion relative to the first member, so that the fastening portion can be prevented from rotating relative to the first member when the mounting tool is attached. Therefore, the first member and the second member can be appropriately fastened together.

[0012] The fastening structure of the third aspect is an aspect dependent on the first or second aspect, and is characterized in that the fastening portion has an abutment surface against which the mounting device can abut, and a determining portion that determines the distance in the second insertion direction between the first member and the abutment surface.

[0013] According to this aspect, the fastening portion has an abutment surface against which the mounting tool can abut, and a determining portion that determines the distance in the second insertion direction between the first member and the abutment surface. By providing the determining portion in this manner, a gap can be provided between the first member and the second member, and the position of the second member relative to the first member can be easily displaced in accordance with deformation of the first member and the second member.

[0014] The fastening structure of the fourth aspect is an aspect dependent on the third aspect, characterized in that the mounting tool is a shoulder screw, and the length of the step of the shoulder screw in the second insertion direction is greater than or equal to the distance between the abutment surface and the tip of the determining portion.

[0015] According to this aspect, the mounting tool is a stepped screw, and the length of the stepped screw in the second insertion direction is equal to or greater than the distance between the contact surface and the tip of the defining portion. With this configuration, the mounting position of the fastening portion by the stepped screw relative to the first member can be appropriately determined.

[0016] The fastening structure of the fifth aspect is an aspect dependent on any one of the first to fourth aspects, and is characterized in that the second member has a regulating portion that regulates the fastening portion in a regulating direction that is along the surface direction and intersects the first insertion direction.

[0017] According to this aspect, the second member has a restricting portion that restricts the fastening portion in the restricting direction. For example, even if the fastening portion is engaged with the first member, the fastening portion needs to move relative to the first member, so it is not possible to provide a rotation stopper or positioning device that does not allow displacement. However, by providing such a restricting portion on the second member, it becomes easier to position the fastening portion at an appropriate position relative to the second member.

[0018] The fastening structure of the sixth aspect is an aspect dependent on any one of the first to fifth aspects, and is characterized in that the second member has a locking portion that locks the fastening portion in the second insertion direction.

[0019] According to this aspect, the second member has a locking portion that locks the fastening portion in the second insertion direction. With this configuration, the fastening portion can be sandwiched between the locking portion and the second member, and the positional relationship between the fastening portion and the second member can be defined.

[0020] The fastening structure of the seventh aspect is an aspect dependent on the sixth aspect, and is characterized in that the fastening portion is displaceable between a position where the locking portion and the fastening portion overlap when viewed in the second insertion direction, and a position where the locking portion and the fastening portion do not overlap when viewed in the second insertion direction.

[0021] According to this aspect, the fastening portion is displaceable between a position where the locking portion and the fastening portion overlap as viewed in the second insertion direction and a position where the locking portion and the fastening portion do not overlap as viewed in the second insertion direction. With this configuration, the first member and the second member are attached at a position where the locking portion and the fastening portion do not overlap, and after the fastening portion passes through the locking portion, the locking portion and the fastening portion are made to overlap, making it easy to attach the first member and the second member via the fastening portion and to define the positional relationship between the first member and the second member.

[0022] The fastening structure of the eighth aspect is an aspect dependent on the seventh aspect, characterized in that the fastener is a screw that screws into the fastening portion, and when the fastening portion is in a position where it does not overlap with the locking portion, the fastener is inserted into the fastening portion, and by rotating the screw, the fastening portion is displaced between a position where it overlaps with the locking portion and a position where it does not overlap with the locking portion.

[0023] According to this aspect, the fastener is a screw that screws into the fastening portion, and when the fastening portion is in a position where it does not overlap the locking portion, the fastener is inserted into the fastening portion, and by rotating the screw, the fastening portion is displaced between a position where it overlaps the locking portion and a position where it does not overlap the locking portion. With this configuration, the fastening portion is displaced by screwing, so that the seventh aspect can be easily realized with a simple configuration.

[0024] The fastening structure of the 9th aspect is an aspect dependent on any one of the 1st to 8th aspects, and is characterized in that the fastening portion includes a first fastening portion and a second fastening portion having a configuration similar to that of the first fastening portion, the first fastening portion has a first engaging portion engageable with the first member, the second fastening portion has a second engaging portion engageable with the first member, the first member has a first engaged portion with which the first engaging portion can engage and a second engaged portion with which the second engaging portion can engage, and the first engaged portion and the second engaged portion have different shapes.

[0025] According to this aspect, the fastening portion has a first fastening portion and a second fastening portion, and the first engaged portion that engages with the first engaging portion of the first fastening portion and the second engaged portion that engages with the second engaging portion of the second fastening portion have different shapes. The relative movement amount of the first fastening portion and the second fastening portion may differ depending on the position of the first fastening portion and the position of the second fastening portion relative to the reference fastening position. However, even in such a case, the fastening portion can be configured to match the side of the first fastening portion and the second fastening portion that has the larger movement amount, by making the shapes of the first engaged portion and the second engaged portion based on the expected movement amount of the first engaging portion and the second engaging portion, the fastening portion and the first member can be positioned more effectively, and the second member can be positioned effectively relative to the first member.

[0026] The fastening structure of the 10th aspect is an aspect dependent on any one of the 1st to 9th aspects, and is characterized in that it has a reference fastening portion that fastens the first member and the second member so that they cannot move relative to each other, and the fastening portion includes a first fastening portion and a second fastening portion having a configuration similar to that of the first fastening portion, and the reference fastening portion is located at a position shifted from the center of the second member in the surface direction.

[0027] According to this aspect, a reference fastening portion is provided that fastens the first member and the second member so that they cannot move relative to each other, and the reference fastening portion is located at a position offset from the center of the second member in the planar direction. When the reference fastening portion is offset from the center of the second member, the distance between the first fastening portion and the fastening portion farther from the reference fastening portion becomes longer than when the reference fastening portion is located at the center of the second member. Therefore, the amount of movement of the fastening portion farther from the reference fastening portion tends to be large. However, by configuring the second member and the fastening portion to move relative to the first member, the effect of the increase in the distance between the reference fastening portion and the fastening portion farther from the reference fastening portion can be suppressed.

[0028] The fastening structure of the 11th aspect is an aspect dependent on any one of the 1st to 10th aspects, and is characterized in that the first member and the fastening portion are made of metal, and the second member is made of resin.

[0029] According to this embodiment, the first member and the fastening portion are made of metal, and the second member is made of resin. In this way, by making all the members that may be screwed into place out of metal, the screws can be repeatedly attached and detached. Therefore, it is possible to improve the durability of the areas that are expected to require maintenance, such as access to the sensor.

[0030] A fastening structure of a twelfth aspect is an aspect dependent on the eleventh aspect, characterized in that the first member is a frame, and the second member is an exterior.

[0031] According to this aspect, the first member is a frame, and the second member is an exterior. If a screw is to be fastened to a metal frame without using a fastening portion, it is necessary to fasten the screw in a direction intersecting the surfaces of the frame and the exterior, and the screw head or tip of the screw becomes easily visible from the outside, which may deteriorate the appearance. However, by making it possible to fasten the screw in a direction along the surfaces of the frame and the exterior, the appearance can be improved.

[0032] The device of the 13th aspect comprises a fastening structure of any one of the 1st to 12th aspects and a device main body, wherein the first member and the second member form a door portion that can be opened and closed relative to the device main body, and when the door portion is closed relative to the device main body, the fastener faces the device main body.

[0033] According to this aspect, the first member and the second member form a door that can be opened and closed relative to the device body, and the fastener faces the device body when the door is closed relative to the device body. With this configuration, the fastener is difficult to see when the door is closed, thereby improving the appearance.

[0034] The device of the 14th aspect is an aspect dependent on the 13th aspect, and is characterized in that when the door portion is open relative to the device body, the fastener is exposed from the device body.

[0035] According to this aspect, the fastener is exposed from the device body when the door is open relative to the device body. With this configuration, opening the door makes it easy to attach and detach the fastener.

[0036] A media transport device of a 15th aspect comprises an apparatus of the 13th or 14th aspect and a transport section for transporting a medium, and is characterized in that the door section forms at least a part of a transport path along which the medium is transported by the transport section.

[0037] According to this aspect, the door portion forms at least a part of the transport path along which the medium is transported by the transport portion. With this configuration, for example, it is possible to open the transport path by opening and closing the door portion, which makes it easier to clear jams, etc.

[0038] A recording device of a 16th aspect comprises a medium transporting device of the 15th aspect, a recording unit housed in the device main body and performing recording on a medium transported along the transport path, a storage unit located below the recording unit and capable of storing a medium to be recorded by the recording unit, and a mounting unit located above the recording unit and from which the medium recorded by the recording unit is ejected, and is characterized in that the door unit overlaps with the recording unit, the storage unit and the mounting unit when viewed in the second insertion direction when the door unit is closed.

[0039] According to this aspect, the door portion overlaps with the recording portion, the storage portion, and the mounting portion when viewed in the second insertion direction. With this configuration, access from the storage portion to the recording portion and further to the mounting portion is possible by opening and closing one door portion. On the other hand, the door portion is likely to be large, and the amount of movement of the second member relative to the first member caused by linear expansion is likely to be large, but the effect of this can be suppressed by configuring the second member and the fastening portion to move relative to the first member.

[0040] A fastening method of a 17th aspect is a fastening method for fastening a first member having a flat portion and a second member having a different linear expansion coefficient from the first member and arranged along the flat direction of the flat portion via a fastening part by inserting a fastener in a first insertion direction, which is a direction along the flat direction of the flat portion of the first member, and is characterized in that it includes the steps of: attaching the fastening part to the fastening part and the first member so that the fastening part is movable relative to the first member in the flat direction by inserting a mounting tool in a second phase direction intersecting the flat direction; aligning the second member to the first member; and fastening the fastening part and the second member by inserting the fastener in the first insertion direction relative to the fastening part and the second member.

[0041] According to this aspect, the fastening portion for fastening the first member and the second member is attached to the first member, and is fastened to the second member by inserting a fastener along the surface direction, and is movable relative to the first member in the surface direction. That is, in a configuration in which the fastener is inserted along the surface direction of the first member and the second member, even if a difference in deformation occurs between the first member and the second member due to thermal expansion or the like, the second member and the fastening portion move relative to the first member, so that the difference can be absorbed. Therefore, the influence of deformation due to the difference in the expansion coefficient between the first member and the second member, which have different linear expansion coefficients, can be suppressed.

[0042] The present invention will be described in detail below. First, an outline of an inkjet printer 1 equipped with a fastening structure 100, which is an example of a fastening structure of the present invention, will be described with reference to Figs. 1 to 3. The inkjet printer 1 is an inkjet printer that conveys a medium P, typically a recording paper, and performs recording by ejecting ink, which is an example of a liquid, onto the conveyed medium P, and is an example of a medium conveying device and a recording device. In the following, the inkjet printer 1 will be abbreviated as printer 1. The XYZ coordinate system shown in each figure is an orthogonal coordinate system, and the Y axis direction is a direction that intersects with the conveying direction of the medium P, that is, the medium width direction, and is also the device depth direction. In the Y axis direction, the +Y direction is the direction from the front of the device to the rear of the device, and the -Y direction is the direction from the rear of the device to the front of the device.

[0043] The X-axis direction is the width direction of the device, and as seen by the operator of the printer 1, the +X direction is the left side and the -X direction is the right side. The Z-axis direction is the vertical direction, and is the normal direction to the mounting surface G of the printer 1, that is, the height direction of the device. Within the Z-axis direction, the +Z direction is the upward direction, and the -Z direction is the downward direction. Below, the direction in which the medium P is fed is sometimes referred to as "downstream," and the opposite direction as "upstream." Also, in Figure 1, the medium transport path is shown with a dashed line. In the printer 1, the medium P is transported through the medium transport path shown by the dashed line in Figure 1.

[0044] The printer 1 is a multifunction device equipped with a scanner unit 7, which is an example of an image reading device, on the top of the device main body 2. The printer 1 is also configured so that an add-on unit (not shown) can be connected to the bottom of the device main body 2, and is configured so that a medium P can be fed from this add-on unit. In Fig. 1, reference numeral 28 denotes a pair of transport rollers that feed the medium P fed from the add-on unit (not shown) into the device main body 2.

[0045] The device body 2 is provided with a first media cassette 3 that stores the medium P at the bottom. A pick roller 21 is provided for the first media cassette 3, which sends out the stored medium P in the -X direction. The medium P sent out by the pick roller 21 is sent toward the transport roller pair 31 by the feed roller pair 25. In the following, unless otherwise specified, the "roller pair" is composed of a drive roller that is driven by a drive source (not shown) to apply a feeding force to the medium P, and a driven roller that rotates in contact with the drive roller or the medium P. The supply roller 19 and separation roller 20 provided near the transport roller pair 38 are a roller pair that sends out the medium P from the supply tray 151, which is not shown in FIG. 1. The supply tray 151 is shown in FIG. 2 and FIG. 7, and by opening the upper side from the cover 150 based on a rotation axis extending in the Y-axis direction provided on the lower side from the state shown in FIG. 2, it becomes a state in which the medium P can be placed as shown in FIG. 7.

[0046] The medium P receiving the feeding force from the transport roller pair 31 is sent between a line head 44, which is an example of a recording head, and the transport belt 13, that is, to a position facing the line head 44. In the following, the medium transport path from the transport roller pair 31 to the transport roller pair 32 is referred to as a recording transport path T1. The line head 44, which is an example of a recording unit that is housed in the device main body 2 and performs recording on the medium P transported along the recording transport path T1, constitutes the head unit 43. The line head 44 is an ink ejection head configured so that the nozzles that eject ink cover the entire area in the medium width direction, and is configured as an ink ejection head that can record over the entire medium width without moving in the medium width direction. However, the ink ejection head is not limited to this, and may be a type that is mounted on a carriage and ejects ink while moving in the medium width direction.

[0047] The head unit 43 is provided so as to be capable of advancing and retreating with respect to the transport path T1 during recording, and is provided so as to be movable between a recording position where it advances into the transport path T1 during recording to perform recording on the medium P, and a retreat position where it retreats from the transport path T1 during recording. Fig. 1 shows a state in which the head unit 43 is at the recording position, and in this state, recording is performed on the medium P.

[0048] Reference numerals 10A, 10B, 10C, and 10D denote ink storage units serving as liquid storage units. Ink ejected from the line head 44 is supplied from each ink storage unit to the line head 44 via a tube (not shown). The ink storage units 10A, 10B, 10C, and 10D are detachably provided in the mounting units 11A, 11B, 11C, and 11D, respectively. Reference numeral 12 denotes a waste liquid storage unit that stores ink ejected from the line head 44 toward a flushing cap (not shown) for maintenance as waste liquid.

[0049] The conveyor belt 13 is an endless belt that is wound around pulleys 14 and 15, and rotates when at least one of the pulleys 14 and 15 is driven by a motor (not shown). The medium P is conveyed to a position facing the line head 44 while being attracted to the belt surface of the conveyor belt 13. The medium P can be attracted to the conveyor belt 13 by a known attraction method such as an air suction method or an electrostatic attraction method. The conveyor belt 13 is an example of a medium support unit that supports the medium P.

[0050] Here, the transport path T1 during printing, which passes through a position facing the line head 44, intersects both the horizontal and vertical directions and transports the medium P upward. Therefore, the ejection surface 44a of the line head 44 that ejects ink also intersects both the horizontal and vertical directions.

[0051] The medium P, on whose first surface has been recorded by the line head 44, is sent further upward by the transport roller pair 32 located downstream of the transport belt 13. A flap 41 is provided downstream of the transport roller pair 32, and this flap 41 switches the transport direction of the medium P. When the medium P is to be discharged as is, the transport path of the medium P is switched by the flap 41 to head toward the upper transport roller pair 35, and the medium P is discharged by the transport roller pair 35 toward the discharge tray 8.

[0052] When recording is to be performed on the second side of the medium P in addition to the first side, the transport direction of the medium P is directed to the branch position K1 by the flap 41. The medium P then passes through the branch position K1 and enters the switchback path T2. In this embodiment, the switchback path T2 is the medium transport path above the branch position K1. The switchback path T2 is provided with pairs of transport rollers 36 and 37. The medium P that has entered the switchback path T2 is transported upward by the pairs of transport rollers 36 and 37, and when the lower edge of the medium P passes the branch position K1, the rotation direction of the pairs of transport rollers 36 and 37 is switched, whereby the medium P is transported downward.

[0053] The switchback path T2 is connected to the connection path T3. In this embodiment, the connection path T3 is a medium transport path from the branch position K1 to the transport roller pair 34. The reversing path T4 is connected to the connection path T3. In this embodiment, the reversing path T4 is a medium transport path from the transport roller pair 34 to the transport roller pair 31 through the transport roller pair 38. The reversing path T4 is a transport path upstream of a position facing the line head 44 and is located vertically below the line head 44. The reversing path T4 has a path portion S that is a path portion that is convex vertically downward and curves and reverses the medium P upward. In this embodiment, the entire reversing path T4 is configured to be the path portion S, but the path portion S may form a part of the reversing path T4. The medium P transported downward from the branch position K1 receives a feed force from the transport roller pairs 33 and 34, reaches the transport roller pair 38, is curved and reversed, and is sent to the transport roller pair 31.

[0054] The medium P is again sent to a position facing the line head 44, and the second surface opposite the first surface on which recording has already been performed faces the line head 44. This makes it possible for the line head 44 to record on the second surface of the medium P.

[0055] 2 and 3, a side door 50 that can be opened and closed relative to the device body 2 is provided on the side surface in the -X direction of the device body 2, i.e., the right side surface. The inside of the device body 2 is exposed by rotating and opening the side door 50 from the state shown in Fig. 2 to the state shown in Fig. 3 based on a rotation axis (not shown) along the Z-axis direction.

[0056] As shown in FIG. 1, the side door 50 includes the -X direction rollers of the transport roller pairs 36 and 37, the transport roller pairs 33 and 34, the supply roller 19, the separation roller 20, and the +Z direction roller of the transport roller pair 38. When the side door 50 is opened, the switchback path T2 is opened, and a part of the connection path T3 and a part of the reversal path T4 are also opened. This allows the jammed paper to be removed, for example, when a paper jam occurs in the connection path T3 or the reversal path T4. A path forming member 51 is provided at the bottom of the side door 50. The path forming member 51 is a member that forms the inside of the reversal path T4, and has a shape that is convex vertically downward.

[0057] The fastening structure 100, which is a main part of the printer 1 of this embodiment, will be described in detail below with reference to Figs. 4 to 17. The fastening structure 100 of this embodiment is a fastening structure that fastens the frame 110 and the cover 150, which has a different linear expansion coefficient from the frame 110, via the fastening portion 120 by inserting a screw 145 or a screw 146 as a fastener in a first insertion direction that is a direction along the surface direction of the flat portion 111 of the frame 110 as a first member having a flat portion 111. In a configuration for fastening a first member and a second member, which have different linear expansion coefficients, it may be desirable to insert the fastener along the surface direction of the first member and the second member. For example, this is based on the viewpoint of appearance, such as when the screw head is not desired to be exposed on the exterior surface, or the viewpoint of space regarding the arrangement of the fastener. The first insertion direction corresponds to the Z-axis direction. As shown in Figs. 5 and 6, the side door 50 of this embodiment has two fastening structures 100, namely, a fastening structure 100A and a fastening structure 100B.

[0058] First, the overall mounting structure of the cover 150 to the frame 110 in the side door 50 of this embodiment will be described. In the side door 50 of this embodiment, the cover 150 is fixed to the frame 110 with a plurality of screws. Specifically, as shown in Figs. 4, 5 and 6, the screws include screws 141, 142, 143, 144, 145, 146 and 147. Each of these screws is configured such that the screw head is on the side that contacts the cover 150 and the screw shaft fits into the frame 110, and the hole portion through which the screw shaft of the cover 150 passes is configured to be large relative to the screw shaft. With this configuration, it is possible to adjust the position of the cover 150 relative to the frame 110 in the direction along the surface direction of the flat portion 111 of the frame 110 by loosening these screws. Note that, as shown in Fig. 2, the screws 141, 142 and 143 are invisible from the outside when the supply tray 151 is closed. Moreover, the screws 145, 146 and 147 cannot be seen from the outside when the side door 50 is closed.

[0059] 6 and 7, the side door 50 of this embodiment has a hook portion 148 on the cover 150 for hooking the front frame 110A of the frame 110. The hook portion 148 is configured to increase the range of position adjustment of the cover 150 relative to the frame 110.

[0060] As described above, the side door 50 of this embodiment includes two fastening structures 100, namely, the fastening structure 100A and the fastening structure 100B. The fastening structures 100A and 100B have substantially the same configuration, and each of the fastening structures 100 includes a frame 110 as a first member having a flat portion 111, and a cover 150 as a second member formed of a member having a linear expansion coefficient different from that of the frame 110 and provided along the surface direction of the flat portion 111. Furthermore, each of the fastening structures 100 includes a fastening portion 120 that fastens the frame 110 and the cover 150 by inserting a screw 145 or a screw 146 as a fastener in a first insertion direction (Z-axis direction) along the surface direction of the flat portion 111, as shown in Figs. 8 to 11 and the like.

[0061] 8 to 11, the fastening portion 120 constituting the fastening structure 100A and fastening the front frame 110A of the frame 110 to the cover 150 is the first fastening portion 120A. On the other hand, the fastening portion 120 constituting the fastening structure 100B and fastening the rear frame 110B of the frame 110 to the cover 150 is the second fastening portion 120B as shown in FIG.

[0062] The first fastening portion 120A and the second fastening portion 120B have substantially the same configuration, and these fastening portions 120 are attached to the frame 110 by inserting a shoulder screw 130 as a mounting tool along a second insertion direction W intersecting with the surface direction of the flat portion 111, as shown in FIG. 9 and the like. Moreover, these fastening portions 120 are fastened to the cover 150 by inserting a screw 145 or a screw 146 along the surface direction of the flat portion 111 through a hole portion 153 shown in FIG. 12 and fitting it into a hole portion 125 provided in the bent portion 124 shown in FIG. 10 and FIG. 11. That is, the fastening portion 120 is attached to the cover 150 by the screw 145 or the screw 146 inserted in the first insertion direction (Z-axis direction), and is attached to the frame 110 by the shoulder screw 130 inserted in the second insertion direction W. As shown in Figure 8, the insertion hole 126 of the screw shaft provided in the fastening portion 120 is larger than the screw shaft of the shoulder screw 130 that attaches the fastening portion 120 to the frame 110, so that the fastening portion 120 is configured to be able to move relative to the frame 110 in the surface direction of the flat portion 111.

[0063] With this configuration, the fastening structure 100 of this embodiment can absorb the difference in deformation caused by thermal expansion between the members of the frame 110 and the cover 150 by moving the cover 150 and the fastening portion 120 relative to the frame 110. In particular, the fastening structure 100 of this embodiment can absorb the difference in deformation caused by thermal expansion between the members of the frame 110 and the cover 150 by moving the cover 150 and the fastening portion 120 relative to the frame 110, even if the difference in deformation caused by thermal expansion occurs not only in the direction intersecting the first insertion direction (Z-axis direction) but also in the first insertion direction (Z-axis direction). Therefore, the fastening structure 100 of this embodiment can suppress the influence of deformation caused by the difference in the expansion coefficient between the first member and the second member, which have different linear expansion coefficients. In this embodiment, the fastening structure 100 is adopted for the side door 50, but the fastening structure 100 of the present invention can be adopted for other than such a side door 50. In this embodiment, the first member and the second member are the metal frame 110 and the resin cover 150, but either the first member or the second member may have a larger linear expansion coefficient. For example, the first member may be made of resin and the second member may be made of metal.

[0064] The fastening structure 100 of this embodiment will be described from the viewpoint of a fastening method. First, a step is performed in which a shoulder screw 130 is inserted into the fastening portion 120 and the frame 110 in a second insertion direction W intersecting with the surface direction of the flat portion 111, thereby attaching the fastening portion 120 so as to be movable relative to the frame 110 in the surface direction of the flat portion 111. Next, a step is performed in which the cover 150 is aligned with the frame 110. Then, a step is performed in which a screw 145 or a screw 146 is inserted into the fastening portion 120 and the cover 150 in the first insertion direction (Z-axis direction), thereby fastening the fastening portion 120 and the cover 150 together. By performing such a fastening method, it is possible to suppress the influence of deformation caused by the difference in the expansion coefficient between the first member and the second member, which have different linear expansion coefficients.

[0065] In the fastening structure 100 of this embodiment, a hole 112 is formed in the frame 110 as shown in Fig. 9, and the fastening portion 120 has an engagement portion 121 that can engage with the hole 112 of the frame 110 as shown in Figs. 8 and 9. The engagement portion 121 can be engaged by entering the hole 112. With this configuration, the rough position of the fastening portion 120 relative to the frame 110 is determined by the engagement portion 121, so that it is possible to prevent the fastening portion 120 from rotating or displacing significantly relative to the frame 110 when the shoulder screw 130 is attached. This makes it easy to properly fasten the frame 110 and the cover 150 together.

[0066] 10, the fastening portion 120 has a contact surface 123a against which the shoulder screw 130 of the flat plate portion 123 can contact, and a defining portion 122 that defines a distance L1 in the second insertion direction W between the frame 110 and the contact surface 123a. In detail, the rear end 122b of the defining portion 122 abuts against the mounting surface 113 of the frame 110, thereby defining the distance L1. By providing the defining portion 122 in this manner, a gap can be provided between the frame 110 and the cover 150, and the position of the cover 150 relative to the frame 110 can be easily displaced as the frame 110 and the cover 150 deform.

[0067] The defining portion 122 in this embodiment is configured by bending a part of the flat plate portion 123, and defines the distance L1 between the frame 110 and the contact surface 123a in the second insertion direction W, and also defines the position of the fastening portion 120 in the second insertion direction W relative to the inner surface 150a of the cover 150, as shown in Fig. 13. That is, the position of the fastening portion 120 in the second insertion direction W relative to the inner surface 150a of the cover 150 is defined by the tip 122a in the second insertion direction W of the defining portion 122. Also, as shown in Fig. 13, in addition to the defining portion 122, the bent portion 124 also defines the position of the fastening portion 120 in the second insertion direction W relative to the inner surface 150a of the cover 150. However, the present invention is not limited to such a configuration.

[0068] As described above, the mounting tool of the fastening structure 100 of this embodiment is the stepped screw 130. Here, as shown in Fig. 15, the length L2 of the step 130a of the stepped screw 130 in the second insertion direction is equal to or greater than the length L3 from the contact surface 123a to the tip 122a of the defining portion 122 in the second insertion direction W. The length L3 corresponds to the distance between the contact surface 123a and the mounting surface 113 of the flat portion 111.

[0069] With this configuration, the mounting position of the fastening portion 120 by the stepped screw 130 with respect to the frame 110 can be appropriately determined. It is particularly preferable that the length L2 is the same as the length L3. However, as in this embodiment, the length L2 may not be the same as the length L3, and the length L2 may be slightly longer in consideration of tolerances and the like. In this embodiment, the fastening portion 120 is provided with one stepped screw 130, but by providing a plurality of stepped screws 130 for one fastening portion 120, the maximum amount of rotation of the fastening portion 120 with respect to the frame 110 as viewed from the second insertion direction W, which may occur due to tolerances, can be further reduced.

[0070] In the fastening structure 100 of this embodiment, as shown in FIG. 8 and the like, the cover 150 has a restricting portion 152 that restricts the fastening portion 120 in a restricting direction that is a direction along the surface direction of the flat portion 111 and a direction intersecting the first insertion direction (Z-axis direction). In addition, in a state where the side door 50 is closed, the Y-axis direction is an example of the restricting direction. For example, even if the fastening portion 120 is engaged with the frame 110, the fastening portion 120 needs to move relative to the frame 110, so that a rotation stopper or positioning that does not allow displacement cannot be installed. In other words, it is not possible to specify a precise position by making the difference between the size of the hole portion 112 and the size of the engagement portion 121 small and engaging the hole portion 112 with the engagement portion 121. However, by providing such a restricting portion 152 on the cover 150 that does not move relative to the fastening portion 120, the fastening portion 120 can be positioned at an appropriate position relative to the cover 150. On the other hand, in order to attach fastening portion 120 to frame 110 first, it is necessary to determine the position of engaging portion 121 and hole portion 112 with which engaging portion 121 engages. Note that restricting portion 152 has a tapered shape that becomes thinner as it moves away from inner surface 150a, which makes it easier to position fastening portion 120 relative to cover 150 before tightening screw 145 or screw 146, and improves the stability of fastening portion 120 relative to cover 150 after screw 145 or screw 146 is tightened.

[0071] 13 and 14, in the fastening structure 100 of this embodiment, the cover 150 has a locking portion 154 consisting of a protrusion portion 154a and an installation portion 154b. The locking portion 154 can lock the fastening portion 120 in the second insertion direction W. With this configuration, the fastening portion 120 can be sandwiched between the locking portion 154 and the inner surface 150a of the cover 150 in the second insertion direction W, and the positional relationship between the fastening portion 120 and the cover 150 can be determined.

[0072] In detail, the fastening portion 120 can be displaced between a position (-Z direction position) where the protrusion 154a of the locking portion 154 and the bent portion 124 of the fastening portion 120 do not overlap as viewed in the second insertion direction W as shown in the left state of Figures 13 and 14, and a position (+Z direction position) where the protrusion 154a of the locking portion 154 and the bent portion 124 of the fastening portion 120 overlap as viewed in the second insertion direction W as shown in the right state of Figures 13 and 14. Here, the left state of Figures 13 and 14 corresponds to a state before the screw 145 or the screw 146 serving as a fastener is tightened, and the right state of Figures 13 and 14 corresponds to a state after the screw 145 or the screw 146 serving as a fastener is tightened. More specifically, when screw 145 or screw 146 is started to be tightened from the left state in Figures 13 and 14, bent portion 124 slides upward along the inclined portion on the installation portion 154b side of protrusion portion 154a, and when screw 145 or screw 146 is tightened, the state shown on the right in Figures 13 and 14 is achieved.

[0073] With this configuration, the frame 110 and the cover 150 are attached at a position where the locking portion 154 and the fastening portion 120 do not overlap, and after the fastening portion 120 passes the protrusion 154a of the locking portion 154 in the second insertion direction W, the locking portion 154 and the fastening portion 120 can be moved relatively along the Z-axis direction to overlap. This makes it easy to attach the frame 110 and the cover 150 via the fastening portion 120, and to define the positional relationship between the frame 110 and the cover 150.

[0074] However, the present invention is not limited to such a configuration, and may be configured such that, for example, a user manually lifts cover 150 relative to frame 110 and screws it down. In this embodiment, the length in the Z-axis direction of insertion hole 126, which is an elongated hole through which a mounting tool of fastening portion 120 passes, is equal to or greater than the total length of the deformation amount of frame 110 and cover 150 due to linear expansion and the lift amount corresponding to the distance in the Z-axis direction between the overlapping position and the non-overlapping position. Note that the center position in the Z-axis direction of insertion hole 126 may be shifted by, for example, the amount of lift amount.

[0075] Here, as described above, the fastener of this embodiment is the screw 145 or the screw 146 that screws into the fastening portion 120. When the fastening portion 120 is in a position where it does not overlap with the locking portion 154, the screw 145 or the screw 146 is inserted into the fastening portion, and by rotating the screw 145 or the screw 146, the fastening portion 120 is displaced between a position where it overlaps with the locking portion 154 and a position where it does not overlap with the locking portion 154. With this configuration, the fastening portion is displaced by screwing, and this can be easily realized with a simple configuration.

[0076] As described above, the side door 50 of this embodiment has, as the fastening portion 120, the first fastening portion 120A and the second fastening portion 120B having a configuration substantially similar to that of the first fastening portion 120A. The first fastening portion 120A has a first engaging portion that can be engaged with the frame 110 as the engaging portion 121, and the second fastening portion 120B has a second engaging portion that can be engaged with the frame 110 as the engaging portion 121, and the frame 110 has a first engaged portion as a hole portion 112 with which the first engaging portion can be engaged, and a second engaged portion as a hole portion 112 with which the second engaging portion can be engaged. Here, the first engaged portion and the second engaged portion have different shapes. On the other hand, the first fastening portion 120A and the second fastening portion 120B have substantially the same configuration, and the first engaging portion and the second engaging portion have the same shape. The relative movement amount of the first fastening part 120A and the second fastening part 120B may differ depending on the position of the first fastening part 120A and the position of the second fastening part 120B with respect to the reference fastening position. However, even in such a case, since the shapes of the first engaged part and the second engaged part are different, the fastening part 120 can be configured to match the first fastening part 120A or the second fastening part 120B, whichever has the larger movement amount, so that the components of the fastening part 120 can be unified and costs can be reduced. On the other hand, by making the shapes of the first engaged part and the second engaged part based on the expected movement amount of the first engaging part and the second engaging part, the fastening part 120 and the frame 110 can be positioned more effectively, and thus the cover 150 can be positioned effectively with respect to the frame 110.

[0077] Specifically, in this embodiment, the first engaged portion as the hole portion 112 is a larger hole than the second engaged portion as the hole portion 112. This is because the fastening position serving as the reference of the cover 150 with respect to the frame 110 is not on the front frame 110A side of the frame 110 but on the rear frame 110B side of the frame 110. When the cover 150 is fitted to the frame 110, first, as shown in FIG. 16, the protrusion 155 provided on the cover 150 is inserted into the round hole 115 provided on the rear frame 110B at the positioning portion 191. The round hole 115 and the protrusion 155 are approximately equal in size. Next, as shown in FIG. 17, the protrusion 156 provided on the cover 150 is inserted into the long hole 116 provided on the front frame 110A at the positioning portion 192. The long hole 116 is configured to be larger than the protrusion 156. Since the process of fitting cover 150 to frame 110 is performed in this manner, in this embodiment, the first engaged portion as hole 112 provided on front frame 110A is a larger hole than the second engaged portion as hole 112 provided on the rear frame 110B side.

[0078] As an example, the length in the Y-axis direction of the first engaging portion and the second engaging portion in this embodiment is both 3.0 mm. In contrast, the length in the Y-axis direction of the first engaged portion in this embodiment is 5.0 mm, and the length in the Y-axis direction of the second engaged portion is 3.5 mm. In this way, the first engaged portion as the hole portion 112 is a larger hole in the Y-axis direction than the second engaged portion as the hole portion 112. With this configuration, the positioning of the fastening portion 120 and the cover 150 can be more effectively performed while taking into consideration the degree of deformation in the Y-axis direction due to the difference in the expansion coefficient between the first member and the second member.

[0079] In this embodiment, the length of the first engaging portion and the second engaging portion in the first insertion direction (Z-axis direction) is 1.2 mm. In contrast, the length of the first engaged portion in the first insertion direction (Z-axis direction) is 3.0 mm, and the length of the second engaged portion in the first insertion direction (Z-axis direction) is 3.5 mm. In this embodiment, the positions of the first engaging portion and the second engaging portion in the first insertion direction (Z-axis direction) are the same, and it is assumed that the amount of movement of the first engaging portion and the second engaging portion in the first insertion direction (Z-axis direction) is also approximately the same. Therefore, it is not necessary to make the size of the first engaged portion in the first insertion direction (Z-axis direction) larger than the size of the second engaged portion in the first insertion direction (Z-axis direction), and such a configuration is adopted. However, it goes without saying that the size of the first engaged portion may be larger than the size of the second engaged portion in the first insertion direction (Z-axis direction) as in the Y-axis direction. Furthermore, if it is expected that the amount of movement of the first engaging portion in the first insertion direction (Z-axis direction) will be greater than the amount of movement of the second engaging portion in the first insertion direction (Z-axis direction), it is preferable to make the size of the first engaged portion greater than the size of the second engaged portion even in the first insertion direction (Z-axis direction).

[0080] Explaining the above from another perspective, the fastening structure 100 of this embodiment includes a positioning portion 191 that is a reference fastening portion that fastens the frame 110 and the cover 150 so that they cannot move relative to each other. The fastening portion 120 includes a first fastening portion 120A and a second fastening portion 120B that has a configuration substantially similar to that of the first fastening portion 120A, and the positioning portion 191 that is a reference fastening portion is located at a position shifted from the center C of the cover 150 shown in FIG. 4 in the planar direction of the flat portion 111. When the reference fastening portion is shifted from the center C of the cover 150, the distance to the fastening portion 120 farther from the reference fastening portion of the first fastening portion 120A and the second fastening portion 120B becomes longer than when the reference fastening portion is located at the center C of the cover 150. Therefore, the movement amount of the fastening portion 120 farther from the reference fastening portion tends to be large. However, in this embodiment, the cover 150 and the fastening portion 120 are configured to move relative to the frame 110, so that the effect of increasing the distance from the reference fastening portion to the fastening portion 120 farther away can be suppressed.

[0081] Here, in this embodiment, both the frame 110 and the fastening portion 120 are made of metal, and the cover 150 is made of resin. That is, both ends of the screws that fix the frame 110 and the cover 150 are made of metal. In this way, by making both ends of the screws metal, the screws can be repeatedly attached and detached. Therefore, it is possible to improve the durability of the parts that are assumed to require maintenance, such as access to the sensor 190 shown in FIG. 6. Also, in this embodiment, the user can easily access the sensor 190 by removing the cover 150 from the frame 110.

[0082] In this embodiment, the first member is frame 110, and the second member is cover 150, which is the exterior. If screws are to be fastened to metal frame 110 without using fastening parts 120, the screws must be fastened in a direction intersecting the surfaces of frame 110 and cover 150, which is the exterior, and the screw heads become easily visible, which may degrade the appearance. However, by making it possible for screws 145 and 146, which are fasteners, to be fastened in a direction along the surfaces of frame 110 and cover 150, which is the exterior, the appearance can be improved.

[0083] From another perspective, the printer 1 of this embodiment includes the fastening structure 100 and the device main body 2 as described above, and the frame 110 and the cover 150 form the side door 50 as a door section that can be opened and closed relative to the device main body 2. When the side door 50 is closed relative to the device main body 2, the fasteners, the screws 145 and 146, are disposed inside the device main body 2, or in other words, are disposed facing the device main body 2. With this configuration, when the side door 50 is closed, the fasteners can be made difficult to see, improving the appearance. Note that the door section of this embodiment is the side door 50 and has a vertical rotation axis, but is not limited to this configuration. The door section may have a horizontal rotation axis, or may be pulled out, or may be opened and closed in any manner.

[0084] Furthermore, in the printer 1 of this embodiment, when the side door 50 is open relative to the device body 2, the screws 145 and 146 are exposed from the device body 2. With this configuration, opening the side door 50 makes it easy to attach and detach the fasteners.

[0085] Furthermore, the printer 1 of this embodiment has the above configuration and a transport section that transports the medium P, which is made up of the transport belt 13 and multiple transport roller pairs such as the transport roller pair 31, and the side door 50 forms at least a part of the transport path along which the medium P is transported by the transport section. With this configuration, for example, it is possible to open the transport path by opening and closing the side door 50, making it easier to clear jams, etc.

[0086] The printer 1 of this embodiment also includes a medium transport device and a line head 44 as a recording unit that records on the medium P housed in the device body 2 and transported along the transport path of the medium P. The printer 1 also includes a first medium cassette 3 located below the line head 44 as a storage unit capable of storing the medium P to be recorded by the line head 44, and a discharge tray 8 located above the line head 44 as a placement unit to which the medium P recorded by the line head 44 is discharged. As shown in FIG. 1, the side door 50 is disposed within a range of length L4 when viewed in the X-axis direction when the side door 50 is closed. That is, when viewed in the X-axis direction when the side door 50 is closed, the side door 50 is disposed at a position that overlaps the line head 44, the first medium cassette 3, and the discharge tray 8. With this configuration, access is possible from the first medium cassette 3 to the line head 44 and further to the discharge tray 8 by opening and closing one side door 50. On the other hand, the side door 50 tends to become large, and the amount of movement of the cover 150 relative to the frame 110 caused by linear expansion tends to become large; however, by configuring the cover 150 and the fastening portion 120 to move relative to the frame 110, this effect can be suppressed.

[0087] Furthermore, the present invention is not limited to the embodiments and modifications described above, but various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these are also included in the scope of the present invention. [Explanation of symbols]

[0088] Reference Signs List 1... inkjet printer (recording device, medium conveying device), 2... device body, 3... first medium cassette (storage section), 7... scanner unit, 8... discharge tray (mounting section), 10A, 10B, 10C, 10D... ink storage section, 11A, 11B, 11C, 11D... mounting section, 12... waste liquid storage section, 13... conveyor belt (conveying section), 14, 15... pulley, 19... supply roller, 20... separation roller, 21... pick roller, 25... feed roller pair (conveying section), 28 , 31, 32, 33, 34, 35, 36, 37, 38... conveying roller pair (conveying section), 41... flap, 43... head unit, 44... line head (recording section), 50... side door (door section), 51... path forming member, 100... fastening structure, 100A... fastening structure, 100B... fastening structure, 110... frame (first member), 110A... front frame, 110B... rear frame, 111... flat portion, 112... hole portion, 113... placement surface, 115... round hole, 116... long hole, 120 ...fastening portion, 120A...first fastening portion, 120B...second fastening portion, 121...engagement portion, 122...defining portion, 122a...tip, 122b...rear end, 123...flat portion, 123a...abutment surface, 124...bent portion, 125...hole portion, 126...insertion hole, 130...step screw (attachment), 130a...step, 141...screw, 142...screw, 143...screw, 144...screw, 145...screw (fastener), 146...screw (fastener), 147...screw, 148...screw, 150...cover (exterior), 150a ...inner surface, 151...supply tray, 152...regulating portion, 153...hole portion, 154...engagement portion, 154a...projection portion, 154b...installation portion, 155...projection portion, 156...projection portion, 190...sensor, 191...alignment portion (reference fastening portion), 192...alignment portion, C...center, G...mounting surface, K1...branching position, L1...distance, L2...length, L3...length, L4...length, P...medium, S...path portion, T1...transport path during recording, T2...switchback path, T3...connection path, T4...reversal path

Claims

1. A first member having a planar portion; A second member is formed of a material having a linear expansion coefficient different from that of the first member and is provided along a surface direction of the planar portion; a fastening portion that fastens the first member and the second member by inserting a fastener in a first insertion direction along the surface direction; Equipped with The fastening portion is The mounting tool is attached to the first member by inserting the mounting tool along a second insertion direction intersecting the surface direction, The fastener is fastened to the second member by inserting the fastener along the first insertion direction, A fastening structure, characterized in that it is movable relative to the first member in the planar direction.

2. The fastening structure according to claim 1, A fastening structure, characterized in that the fastening portion has an engaging portion that can engage with the first member.

3. The fastening structure according to claim 1, The fastening portion is a contact surface against which the mounting tool can come into contact; A fastening structure comprising: a determining portion that determines a distance between the first member and the abutment surface in the second insertion direction.

4. The fastening structure according to claim 3, The mounting tool is a shoulder screw, A fastening structure, characterized in that the length of the step of the shoulder screw in the second insertion direction is greater than or equal to the distance between the abutment surface and the tip of the determining portion.

5. The fastening structure according to claim 1, A fastening structure characterized in that the second member has a regulating portion that regulates the fastening portion in a regulating direction that is along the surface direction and intersects with the first insertion direction.

6. The fastening structure according to claim 1, A fastening structure, characterized in that the second member has a locking portion that locks the fastening portion in the second insertion direction.

7. The fastening structure according to claim 6, A fastening structure characterized in that the fastening portion is displaceable between a position where the engaging portion and the fastening portion overlap when viewed in the second insertion direction, and a position where the engaging portion and the fastening portion do not overlap when viewed in the second insertion direction.

8. The fastening structure according to claim 7, The fastener is a screw that is screwed into the fastening portion, When the fastening portion is in a position where it does not overlap with the locking portion, the fastener is inserted through the fastening portion, A fastening structure, characterized in that the fastening portion is displaced between a position where it overlaps with the engaging portion and a position where it does not overlap with the engaging portion by rotating the screw.

9. The fastening structure according to claim 1, The fastening portion includes a first fastening portion and a second fastening portion having a similar configuration to the first fastening portion, The first fastening portion has a first engagement portion that is engageable with the first member, The second fastening portion has a second engaging portion that is engageable with the first member, the first member has a first engaged portion with which the first engaging portion can be engaged and a second engaged portion with which the second engaging portion can be engaged, A fastening structure, characterized in that the first engaged portion and the second engaged portion have different shapes.

10. The fastening structure according to claim 1, a reference fastening portion that fastens the first member and the second member so that they cannot move relative to each other, The fastening portion includes a first fastening portion and a second fastening portion having a similar configuration to the first fastening portion, A fastening structure characterized in that the reference fastening portion is located at a position shifted from the center of the second member in the planar direction.

11. The fastening structure according to claim 1, the first member and the fastening portion are made of metal, A fastening structure characterized in that the second member is made of resin.

12. The fastening structure according to claim 11, the first member is a frame, A fastening structure, characterized in that the second member is an exterior.

13. The fastening structure according to any one of claims 1 to 12, A device body, Equipped with the first member and the second member constitute a door portion that can be opened and closed with respect to the device body, The device, characterized in that, when the door portion is closed relative to the device body, the fastener faces the device body.

14. 14. The apparatus of claim 13, The device, characterized in that, when the door portion is open relative to the device body, the fastener is exposed from the device body.

15. An apparatus according to claim 13; A transport unit that transports the medium; Equipped with The medium transport device, wherein the door portion forms at least a part of a transport path along which the medium is transported by the transport portion.

16. A medium transport device according to claim 15; a recording unit that is accommodated in the device body and performs recording on a medium transported along the transport path; a storage section located below the recording section and capable of storing a medium to be recorded by the recording section; a placement section located above the recording section and onto which a medium recorded by the recording section is discharged; Equipped with The recording device, wherein the door portion overlaps the recording portion, the accommodation portion, and the placement portion when viewed in the second insertion direction when the door portion is closed.

17. A fastening method for fastening a first member having a flat surface to a second member having a linear expansion coefficient different from that of the first member and provided along the flat surface direction of the flat surface, by inserting a fastener in a first insertion direction that is a direction along the flat surface direction of the flat surface of the first member, the fastening method comprising: a step of attaching the fastening portion to the first member so as to be movable relative to the first member in the planar direction by inserting a mounting tool into the fastening portion and the first member in a second interphase direction that intersects with the planar direction; aligning the second member with the first member; fastening the fastening portion and the second member by inserting the fastener into the fastening portion and the second member in the first insertion direction; A fastening method comprising the steps of:

Images