JP2008087930A - Shutter opening/closing device, feeding cassette, recording device, and liquid ejection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter opening/closing device with reduced number of parts, eliminating influence of excessive operation by a user or a defect in assembly or the like so as to constantly and stably implement opening/closing operation of a shutter. <P>SOLUTION: The opening/closing device includes: an opening part 41 formed to a part of a case body 38 which houses objects to be housed (media to be recorded) P, and used as an eject port; the shutter 42 covering the opening part and attached slidably in an opening/closing direction with respect to the case body; and cantilever springs 62, 66 used as an exerting means for constantly exerting the shutter in a closing direction, and integrally molded to at least one of the case body and the shutter. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a case main body that accommodates an object to be accommodated, an opening that is formed in a part of the case main body and serves as an outlet for the object to be accommodated, and slides relative to the case main body so as to cover the opening. Shutter opening / closing device applied to a housing case with a shutter comprising a shutter that can be attached and an urging means that constantly urges the shutter in the closing direction, and feeding using the shutter opening / closing device The present invention relates to a recording cassette and a recording apparatus to which the feeding cassette can be mounted.

  Furthermore, the present invention relates to a liquid ejecting apparatus such as an ink jet recording apparatus that discharges or ejects a liquid such as ink from its head and adheres the liquid to the recording medium, ie, the liquid ejecting medium, and a supply that can be attached to the liquid ejecting apparatus. It relates to a cassette for sending.

  Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a plotter, a copying machine, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. Instead, it includes a device for ejecting a liquid corresponding to the application from a liquid ejecting head corresponding to the recording head to a liquid ejecting medium corresponding to a recording medium and attaching the liquid to the liquid ejecting medium. Use.

  In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

  Hereinafter, a shutter opening / closing device applied to a feeding cassette will be described as an example. As shown in Patent Document 1 below, the feeding cassette has a cassette body whose bottom surface, front end surface, rear end surface, and left and right side surfaces are closed and whose upper surface is opened, and an upper surface of the cassette body that is opened. An upper lid provided so as to close most of the upper lid; an opening serving as a take-out port for feeding a recording medium (hereinafter also referred to as paper) formed at the top end of the upper surface not blocked by the upper lid; A shutter that is slidably attached to the cassette body so as to cover the opening is provided, and a biasing means that constantly biases the shutter in the closing direction.

  Further, the urging means is a constituent member of the shutter opening and closing device, and has conventionally been constituted by a metal tension coil spring that is separate from the shutter and the cassette body. The shutter opening and closing device is configured to automatically open and close the shutter by attaching and detaching operations to the recording apparatus main body. In this case, the tension coil spring that is merely hooked between the shutter and the cassette body may be detached from the shutter or the cassette body due to an excessive operation by the user. In such a case, the shutter is opened and closed. It will cause a bug.

Also, the tension coil spring once removed during assembly or repair of the feeding cassette may be lost or forgotten. In such a case, a new tension coil spring must be prepared, As in the case, the shutter opening / closing operation has a problem. In addition, the shutter and cassette body are generally made of synthetic resin material. Providing a separate tension coil spring with a separate material leads to an increase in the number of parts and parts cost, requiring cumbersome disassembly and separation when recycling. There is a problem.
JP-A-1-167123

  The present invention fundamentally reviews the configuration of the urging means to effectively use and multi-functional parts, contributes to the reduction in the number of parts and the cost of parts, and the user's excessive operation and deficiencies during assembly, etc. To provide a shutter opening / closing device capable of performing a stable shutter opening / closing operation, eliminating the influence, a feeding cassette to which the shutter opening / closing device is applied, a recording device to which the feeding cassette can be mounted, and the like. It is to be an issue

  In order to solve the above-described problem, the shutter opening and closing device according to the first aspect of the present invention is formed in a part of a case main body that accommodates an object to be stored, and an opening serving as an outlet for the object to be stored; A shutter that covers the opening and is slidably attached to the case body in an open / close direction, and a biasing means that constantly biases the shutter in the closing direction, and is integrally formed with at least one of the case body and the shutter. And a cantilever spring piece.

  According to the first aspect of the present invention, the tension coil spring which has been conventionally provided as the urging means becomes unnecessary, and the number of parts and the part cost can be reduced. Further, since the cantilever spring piece as the urging means is formed integrally with the case body and / or the shutter, the influence of deficiencies such as excessive operation by the user or assembly is eliminated, and a stable shutter is always provided. Opening and closing operations can be realized.

  The shutter opening and closing device according to a second aspect of the present invention is the shutter opening and closing device according to the first aspect, wherein the cantilever spring piece is provided with a guide head abutting against the abutted part at a tip part thereof. Is configured such that the elastic deformation of the cantilever spring piece is started by abutting against the abutted portion.

  According to the second aspect of the present invention, the predetermined urging force required as the urging means is exhibited, and it is easy to set the elastic repulsion force generated by the elastic deformation of the cantilever spring piece to obtain the urging force. become.

The shutter opening and closing device according to a third aspect of the present invention is characterized in that, in the second aspect, the guide head is formed in a circular shape in a side view.
According to the third aspect of the present invention, the case main body or a part of the shutter, or the other cantilever spring piece, which is a contacted portion that is in contact with the guide head, is provided with a smooth periphery of the guide head. It is possible to smoothly move the contact position toward the base side of the cantilever spring piece guided by the surface shape.

  The shutter opening / closing device according to a fourth aspect of the present invention is the shutter opening / closing device according to any one of the first to third aspects, wherein the guide head is formed at a tip of one of the case body and the shutter. One cantilever spring piece is provided, the other of the case body and the shutter is provided with the other cantilever spring piece, and the guide head of the one cantilever spring piece is the other The cantilever spring piece starts to abut from the distal end side, and the amount of elastic deformation of the other cantilever spring piece is gradually increased, and the guide head portion is moved toward the base of the proximal-side spring acting portion. The shutter is widened while moving the contact position.

  According to the fourth aspect of the present invention, the guide head of “one cantilever spring piece” starts abutting from the front end side of “the other cantilever spring piece” and “the other cantilever spring piece” The amount of elastic deformation is gradually increased, and the shutter is expanded while moving the contact position of the guide head toward the vicinity of the base of the spring acting portion on the proximal end side of the “other cantilever spring piece”. It is configured as follows. Therefore, when the guide head of “one cantilever spring piece” is in contact with the tip of “the other cantilever spring piece”, the amount of elastic deformation and the elastic repulsion of both cantilever spring pieces are small. . Then, the amount of elastic deformation and the elastic repulsive force of both cantilever spring pieces can be gradually increased by moving the contact position toward the vicinity of the root of the spring acting portion of the “other cantilever spring piece”. it can. Therefore, by changing the distance between the two cantilever spring pieces in contact with each other, it becomes possible to appropriately adjust the elastic repulsion force of the cantilever spring piece or the biasing force of the biasing means.

In the shutter opening / closing device according to a fifth aspect of the present invention, in any one of the first to fourth aspects, the case body, the shutter, and the cantilever spring piece are made of the same synthetic resin material. It is characterized by this.
According to the fifth aspect of the present invention, when the shutter opening / closing device is discarded, the troublesome operation of disassembling the shutter opening / closing device and separating the disassembled parts is not required, and the shutter opening / closing device is recycled. It becomes easy.

  A feeding cassette according to a sixth aspect of the present invention includes a cassette main body that can accommodate several recording media, and an opening that is formed in a part of the cassette main body and serves as a feeding / drawing port for the recording media. And a shutter that is slidably attached to the cassette body so as to cover the opening, and an urging means that constantly urges the shutter in the closing direction, and is detachably attached to the recording apparatus. A feeding cassette configured to open the shutter against the urging force of the urging means when mounted, wherein the shutter opening and closing device according to any one of the first to fifth aspects is provided. It is characterized by having.

  According to the sixth aspect of the present invention, the number of parts and the part cost of the feeding cassette are reduced, and the opening / closing operation of the shutter is stable without being affected by the user's excessive operation or deficiencies during assembly. It becomes possible to provide a cassette for feeding.

A recording apparatus according to a seventh aspect of the present invention is a recording apparatus having a configuration in which a feeding cassette is mounted and a recording medium accommodated in the feeding cassette is transported to a recording execution unit to perform recording. The feeding cassette is the feeding cassette described in the sixth aspect.
According to the seventh aspect of the present invention, effective use and multi-functionality of parts are achieved, which contributes to the reduction of the number of parts and parts cost, and always eliminates the influence of deficiencies such as excessive operation and assembly by the user. It is possible to provide a recording apparatus to which a feeding cassette to which a shutter opening / closing device capable of exhibiting a stable shutter opening / closing operation is applied can be mounted.

  A liquid ejecting apparatus according to an eighth aspect of the present invention has a configuration in which a feeding cassette is mounted and a liquid ejecting medium accommodated in the feeding cassette is transported to a liquid ejecting execution unit to perform liquid ejecting. In the liquid ejecting apparatus, the feeding cassette includes a cassette main body that can store a large number of recording media, and an opening that is formed in a part of the cassette main body and serves as a feeding / drawing port for the recording medium And a shutter that is slidably attached to the cassette body so as to cover the opening, and an urging means that constantly urges the shutter in the closing direction, and is detachably attached to the recording apparatus, The shutter is configured to open against the urging force of the urging means when mounted, and includes the shutter opening and closing device described in any one of the first to fifth aspects. To do.

  Hereinafter, a shutter opening / closing device according to the present invention, a feeding cassette to which the shutter opening / closing device is applied, and a recording apparatus as an example of a liquid ejecting apparatus to which the feeding cassette can be mounted will be described. First, an ink jet printer 100 is taken up as the best mode for carrying out a liquid ejecting apparatus of the present invention and a recording apparatus as an example thereof, and an outline of the entire configuration will be described with reference to the drawings.

  FIG. 1 is a perspective view showing the appearance of an ink jet printer. The illustrated inkjet printer 100 is a relatively compact inkjet printer that can be carried. The illustrated inkjet printer 100 is not provided with a feeding device having a hopper, and is essentially close to the rear portion of the printer main body 3 which is an example of a liquid ejecting apparatus main body provided with a feeding device and a recording apparatus main body. In the upper opening 5, the feeding cassette 1 can be detachably mounted in a forward-downward inclined posture.

  Then, a recording medium (hereinafter also simply referred to as a sheet) P, which is an example of a liquid ejecting material accommodated in the feeding cassette 1, is pushed upward by a push-up operation of the hopper 16 (FIG. 4). From the uppermost sheet P by cooperating with the feeding roller 14 positioned facing the opening 41 (FIGS. 2 and 4) provided on the upper surface on the front end surface side of the cassette body 38, that is, by the pressure feeding action. It is drawn and fed sequentially. The specific configuration of the feeding cassette 1 will be described later.

  Downstream of the feeding roller 14, a known conveyance roller (not shown) constituted by a pair of upper and lower conveyance driven rollers and a conveyance drive roller is provided, and the sheet conveyed by the conveyance roller P is guided to a recording position located downstream in the paper transport direction (also in the sub-scanning direction). Above the recording position, a recording head (not shown), which is an example of a liquid ejecting head that directly performs recording by ejecting ink, which is an example of liquid, onto the paper P is positioned. On the other hand, a platen (not shown) that supports the lower surface of the paper P is provided below the recording position, and the platen plays a role of defining a gap between a recording medium and a recording head that are important for recording quality. ing.

  The recording head is mounted on the lower surface of a carriage (not shown) that reciprocates in the main scanning direction perpendicular to the sub-scanning direction, and the carriage is guided by a carriage guide shaft (not shown) spanned in the main scanning direction. It is configured to reciprocate upon receiving a driving force from an endless belt (not shown) stretched in the main scanning direction. Further, downstream of the recording position in the sheet conveyance direction, a discharge roller (not shown) constituted by a pair of upper and lower discharge driven rollers and a discharge drive roller is provided. The paper P discharged by the discharge roller is discharged and stacked on a mounting surface of a discharge stacker which is an example of a liquid ejecting medium receiving unit (not shown).

[Example]
Next, the feeding cassette 1 of the present invention that can be mounted on the ink jet printer 100 configured as described above and the shutter opening / closing device 10 of the present invention applied to the feeding cassette 1 will be described. This will be described in detail.

  FIG. 2 is a perspective view from a diagonal front showing the feeding cassette when the shutter is expanded, and FIG. 3 is a perspective view from the diagonal front showing the feeding cassette when the shutter is closed. 4 is a side sectional view showing the feeding cassette when the hopper is raised, and FIG. 5 is a side sectional view showing the feeding cassette when the hopper is lowered. FIG. 6 is a perspective view of the cassette body from an obliquely upward direction, and FIG. 7 is a perspective view of the cassette body from an obliquely downward direction. FIG. 8 is a front perspective view of the shutter, and FIG. 9 is a rear perspective view of the shutter. FIG. 10 is an exploded perspective view showing the shutter opening / closing device, FIG. 11 is a side sectional view (a) showing the shutter opening / closing device when the shutter is closed, and a side sectional view (b) showing the shutter opening / closing device when the shutter is expanded. ).

  As shown in FIG. 1, the feeding cassette 1 of this embodiment is used by being mounted on an automatic feeding unit 2 of a recording apparatus. FIG. 1 shows a state where the feeding cassette 1 is being mounted. The automatic feeding unit 2 is provided near the rear portion of the printer main body 3, and includes a feeding roller 14 that feeds the paper P by cooperation with the hopper 16 (clamping pressure feeding action), and the feeding A rotary shaft 18 that rotates integrally with the roller 14, a motor 31 that is a drive means that transmits rotation to the rotary shaft 18, a gear train 32 that is a drive transmission means, and these members are held and fed. And a unit holder 33 for guiding the sheet P to the sheet conveyance path.

  The rotation of the rotary shaft 18 is transmitted to a hopper operation cam 35 attached to one end of a hopper operation shaft (not shown) and a rotation shaft (not shown) of the return lever 7 via a gear train 32. Yes. Accordingly, the hopper 16 moves up and down at a predetermined timing in conjunction with the rotation of the feeding roller 14, and the return lever 7 operates at the predetermined timing to feed the succeeding paper P that has been double fed. It is designed to return to the side. In addition, the unit holder 33 is provided with a separating means (not shown) for separating the multi-fed paper P into the uppermost paper P used for recording and the succeeding paper P, and the hopper 16 for feeding. An urging member (compression coil spring or the like) (not shown) that constantly urges the roller 14 is provided.

  A cassette guide 37 having a substantially concave shape in cross section is raised obliquely rearward above the rear portion of the unit holder 33 of the automatic feeding unit 2 and guided to the inner wall surface of the cassette guide 37. Thus, the feeding cassette 1 of the present invention is mounted, and is held by the cassette guide 37 in a forward-downward inclined posture.

  As shown in FIGS. 2 to 7, the feeding cassette 1 of the present embodiment includes, as an example, a cassette main body 38 that can store about 50 sheets of paper P in a stacked state in the case of plain paper, An opening 41 formed in a part of the cassette main body 38 and serving as a feeding / drawing port for the paper P; a shutter 42 slidably attached to the cassette main body 38 so as to cover the opening 41; The urging means 61 that constantly urges the shutter 42 in the closing direction A, the hopper 16 that pushes up the paper P accommodated in the cassette main body 38 toward the feeding roller 14, and the above for the printer main body 3. And a shutter opening and closing device 10 that automatically opens and closes the shutter 42 when the cassette body 38 is mounted and removed.

  The cassette main body 38 is a flat rectangular box-like container belonging to the case main body that accommodates the paper P that is an object to be accommodated, and the upper surface 40, the front end surface 39, the rear end surface 43, the left side surface 44, and the right side surface 45 are integrally formed. The bottom surface 46 is open and can accommodate a large number of sheets P. Further, rocking holes 47 and 47 (FIGS. 6 and 7) are formed in the vicinity of the corner portion below the rear end face 43 on the left and right side surfaces 44 and 45 of the cassette body 38, and these rocking holes 47 are formed. 47, the swing shaft 50 provided on the swing base end portion 49 of the hopper 16 is engaged (FIGS. 2 to 5). Further, at the lower position near the front end surface 39 on the left and right side surfaces 44 and 45 of the cassette body 38, the engagement protrusions 54 that engage with engagement recesses (not shown) formed on the inner wall surface of the cassette guide 37 are provided at the front ends. The elastic tongue piece 52 (FIG. 2) which the part has is provided.

An engaging pin 56 is provided on the upper portion of the elastic tongue piece 52 so as to protrude outward. The engaging pin 56 is adapted to engage with an elongated groove-shaped engaging groove 60 bent in a step shape in the middle of being formed in the left and right side plates 58 and 59 of the shutter 42. Further, one cantilever spring piece 62 which is a constituent member of the biasing means 61 in a forwardly inclined posture is provided on the inner wall surface side of the left and right side surfaces 44 and 45 of the cassette body 38 provided with the engagement pin 56. Is provided (FIG. 7). The one cantilever spring piece 62 includes a guide head 64 having a shape in which a cylinder is tilted sideways so as to be circular when viewed from the side, and a portion extending from the guide head 64 to the cassette body 38 side. In addition to this, an elastically deformable arm-like spring action portion 63 is provided. In addition, a guide rib 69 (FIG. 2) is provided along the longitudinal direction at a height near the middle of the left and right side surfaces 44 and 45 of the cassette body 38. Is provided. The guide rib 69 is a member that is in sliding contact with the inner surface of the cassette guide 37 of the unit holder 33 so that the feeding cassette 1 can be smoothly attached and detached. Further, at a position near the middle between the left and right side surfaces 44 and 45 on the upper surface 40 of the cassette main body 38, a rectangular hole-shaped window portion 70 for checking the presence / absence and remaining amount of the paper P in the cassette main body 38 (see FIG. 2) is provided.

  As shown in FIG. 2, the shutter 42 is a member having a gate-shaped cross-sectional shape constituted by the left side plate 58, the right side plate 59, and the cover plate 65. As described above, the left side plate 58 and the right side plate 59 are formed with stepped engaging grooves 60 that engage with the engaging pins 56 formed on the left and right side surfaces 44 and 45 of the cassette body 38. Further, at the left and right ends of the cover plate 65 of the shutter 42, the other cantilever spring pieces 66 as other constituent members of the urging means 61 are provided so as to project obliquely downward.

  The guide head 64 is not provided at the tip of the other cantilever spring piece 66, and the other piece is formed only by the flexible spring action portion 63 that can be elastically deformed more greatly than the one cantilever spring piece 62. The holding spring piece 66 is configured. Further, a notch 78 that is cut out in a rectangular shape is provided at the center of the front edge of the cover plate 65. Then, with the shutter 42 moved in the expanding direction B as will be described later (FIGS. 2 and 4), the leading end is pushed up by the hopper 16 by the feeding roller 14 entering the notch 78. The feeding roller 14 can be brought into contact with the uppermost surface of the sheet P.

  As shown in FIGS. 4 and 5, the hopper 16 is a flat plate member that closes the opened bottom surface 46 of the cassette body 38. The swing base end portion 49 of the hopper 16 is provided with the swing shaft 50 as described above. With the swing shaft 50 as a swing fulcrum, the standby posture shown in FIG. 5 and the feed shown in FIG. It can swing between feeding postures. Further, between the cassette body 38 and the hopper 16, there is a locking claw 79 (FIGS. 5 and 7) which is a structural member of a locking structure for preventing the hopper 16 from moving downward during feeding. Is provided. In addition, a square hole-shaped opening 75 (FIG. 10) is provided at the center of the hopper 16 on the swing free end 74 side. The opening 75 is fitted with a part of a push-up action part at the tip of an action arm (not shown) attached to an intermediate part of a hopper action shaft (not shown), and the other part of the push-up action part is the opening 75. It engages with the lower surface of the peripheral edge.

  As shown in FIG. 1, the shutter opening / closing device 10 automatically attaches and removes the cassette body 38 from the upper opening 5 of the printer body 3 to the cassette guide 37 in the unit holder 33 of the automatic feeding unit 2. This is a device that can perform an opening / closing operation of the shutter 42.

  As shown in FIGS. 10 and 11, the shutter 42 has one cantilever spring piece 62 on the cassette body 38 side and the other cantilever spring piece 66 on the shutter 42 side abutting. As shown in FIGS. 3 and 11A, the urging force generated by the above is always located at the end in the closing direction A that closes the opening 41 of the cassette body 38. When the feeding cassette 1 is mounted on the inner surface of the cassette guide 37 in the automatic feeding unit 2 of the recording apparatus, a part of the shutter 42 is a locked portion (not shown) on the cassette guide 37 side. To move in the expanding direction B in which the opening 41 is expanded against the urging force. That is, the shutter 42 moves toward the end portion in the expanding direction B shown in FIGS. 2 and 11 (b) while being lifted somewhat by the engagement pin 56 being guided by the engagement groove 60.

  Specifically, the urging means 61 that urges the shutter 42 (FIG. 11B) moved in the expansion direction B to return in the closing direction A is a main component of the shutter opening / closing device 10. Yes. In other words, in this embodiment, the biasing means 61 of the shutter opening / closing device 10 abuts on the one cantilever spring piece 62 integrally formed with the cassette body 38 and the one cantilever spring piece 62. Thus, the other cantilever spring piece 66 on the shutter 42 side that performs the spring action is combined.

  One cantilever spring piece 62 is provided with a guide head 64 at the tip as described above. The guide head 64 is made to act as an elastic action point to promote or promote the elastic deformation of the cantilever spring pieces 62 and 66 so as to exhibit a desired elastic repulsion force. The other cantilever spring piece 66 is first brought into contact with the guide head 64 of the one cantilever spring piece 62 so that the elastic deformation of the respective cantilever spring pieces 62 and 66 is started. ing. Further, since the guide head 64 has a circular shape when viewed from the side as described above, the other cantilever spring piece 66 is guided by the peripheral shape of the guide head 64 and is applied to the spring acting portion 63 on the base side. The contact position can be moved smoothly.

  The urging means 61, which is a main component of the shutter opening / closing device 10, the cassette body 38, and the shutter 42 are made of the same recyclable synthetic resin material. Are made of the same recyclable synthetic resin material. Therefore, when the shutter opening / closing device 10 is discarded, the troublesome disassembly work of the shutter opening / closing device 10 and the separation work of the disassembled parts are not required, the recycling of the shutter opening / closing device 10 is facilitated, and the resources are effectively used. .

  Next, the operation mode of the shutter opening and closing device 10 of the present invention configured as described above will be described separately for (1) when the shutter is closed and (2) when the shutter is expanded.

(1) When the shutter is closed (see FIGS. 3, 5, and 11A)
Before the feeding cassette 1 is mounted on the printer main body 3, the opening 41 formed in the upper surface 40 on the front end surface 39 side of the cassette main body 38 is closed by the shutter 42 as shown in the figure. Yes. In this embodiment, at this time, the tip of the other cantilever spring piece 66 is in contact with the vicinity of the root of the guide head 64 and the spring action portion 63 of the one cantilever spring piece 62, so The spring pieces 62 and 66 are slightly elastically deformed. Therefore, the urging force exerted by the elastic repulsion force by the two cantilever spring pieces 62 and 66 acts on the shutter 42 in the closing direction A, and the shutter 42 is in the closed state as shown in the figure.

(2) When the shutter is expanded (see FIGS. 2, 4, and 11B)
When the feeding cassette 1 in such a state is mounted on the printer main body 3, a part of the shutter 42 comes into contact with a part of the cassette guide 37 of the unit holder 33 (to the locked portion), and the shutter 42 Moves in the expanding direction B against the urging force of the urging means 61. As shown in the drawing, the opening 41 formed on the upper surface 40 on the front end surface 39 side of the cassette body 38 is expanded so that the front end surface 39 side is opened as the shutter 42 moves in the expansion direction B. It becomes a state. At this time, the base end portion of the spring acting portion 63 of the other cantilever spring piece 66 is in contact with the guide head 64 of the one cantilever spring piece 62, and the two cantilever spring pieces 62 and 66 are The guide head 64 is in a state of being greatly elastically deformed with the elastic action point.

  Therefore, a large biasing force exerted on the shutter 42 by the elastic repulsive force of the two cantilever spring pieces 62 and 66 acts in the closing direction A, and the shutter 42 is kept in the expanded state as shown in the figure. . When the feeding cassette 1 in such a state is pulled out from the upper opening 5 of the printer main body 3 and removed from the printer main body 3, the large elastic repulsive force stored in the two cantilever spring pieces 62 and 66 is obtained. As a result, the shutter 42 returns to the closed state shown in FIGS. 3, 5, and 11A again.

[Other embodiments]
The shutter opening / closing device 10 according to the present invention, the feeding cassette 1 to which the shutter opening / closing device 10 is applied, the recording device 100 to which the feeding cassette 1 can be mounted, and the like are basically configured as described above. However, it is of course possible to change or omit the partial configuration without departing from the gist of the present invention. For example, the shutter opening / closing device 10 of the present invention is not limited to the feeding cassette 1 mounted on the recording device 100 and other liquid ejecting devices as described above, and can be applied to various housing cases with shutters. is there.

  In addition to providing cantilever spring pieces 62 and 66 on both the cassette body 38 and the shutter 42, one cantilever spring piece 62 or the other cantilever spring piece 66 is provided on only one of the cassette body 38 and the shutter 42. It is also possible to provide it. In addition to the circular shape in side view, the side shape of the guide head 64 may be other side shapes such as a semicircular shape and streamline shape, and a spherical guide head instead of the cylindrical guide head 64. It is also possible to adopt 64. Further, the size, contact distance, installation location, number, and the like of the two cantilever spring pieces 62 and 66 are not limited to those of the above-described embodiments, and can be appropriately adjusted.

FIG. 2 is a perspective view showing the appearance of an inkjet printer. The perspective view which shows the cassette for feeding at the time of shutter expansion. The perspective view which shows the cassette for feeding at the time of shutter closing. The side sectional view showing the cassette for feeding at the time of hopper raising. The side sectional view showing the cassette for feeding at the time of hopper lowering. The perspective view from diagonally upward which shows a cassette main body. The perspective view from diagonally downward which shows a cassette main body. The perspective view of the surface side which shows a shutter. The perspective view of the back surface side which shows a shutter. The disassembled perspective view which shows the opening / closing apparatus of a shutter. The side sectional view (a) when the shutter is closed, and the side sectional view (b) when the shutter is expanded.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Feeding cassette (storage case), 2 Automatic feeding unit, 3 Printer main body (recording apparatus main body), 5 Upper opening, 7 Return lever, 10 Shutter opening and closing device, 14 Feeding roller, 16 Hopper, 18 rotation Shaft, 31 Motor, 32 Gear train, 33 Unit holder, 35 Hopper operation cam, 37 Cassette guide, 38 Cassette main body (case main body), 39 Front end surface, 40 Upper surface, 41 Opening portion, 42 Shutter, 43 Rear end surface, 44 Left side Surface, 45 Right side, 46 Bottom, 47 Oscillating hole, 49 Oscillating base end, 50 Oscillating shaft, 52 Elastic tongue, 54 Engaging projection, 56 Engaging pin, 58 Left side plate, 59 Right side plate, 60 Engagement groove, 61 biasing means, 62 one cantilever spring piece, 63 spring acting part, 64 guide head, 65 cover plate, 66 other cantilever spring piece, 69 guy Rib, 70 Window part, 74 Swing free end, 75 Opening, 78 Notch part, 79 Locking claw, 100 Inkjet printer (recording device), P paper (recording medium, contained object), A closing direction, B Expansion direction

Claims (8)

Formed in a part of the case main body for storing the objects to be stored, and an opening serving as an outlet for the objects to be stored;
A shutter that covers the opening and is slidably attached to the case body in an opening and closing direction;
An opening / closing device for a shutter, comprising: the case main body and a cantilever spring piece integrally formed with at least one of the shutters as urging means for urging the shutter in the closing direction at all times.   2. The shutter opening and closing device according to claim 1, wherein the cantilever spring piece includes a guide head that abuts against the abutted portion at a tip portion, and the guide head abuts against the abutted portion. Thus, the shutter opening and closing device is configured such that elastic deformation of the cantilever spring piece is started.   3. The shutter opening / closing device according to claim 2, wherein the guide head is formed in a circular shape in a side view. The shutter opening / closing device according to any one of claims 1 to 3,
One of the case main body and the shutter is provided with one cantilever spring piece in which the guide head is formed at the distal end.
The other of the case body and the shutter is provided with the other cantilever spring piece,
The guide head of the one cantilever spring piece starts to contact from the tip side of the other cantilever spring piece, and gradually increases the amount of elastic deformation of the other cantilever spring piece, A shutter opening / closing device configured to expand the shutter while moving the contact position of the guide head toward the vicinity of the base of the side spring acting portion.   The shutter opening / closing device according to any one of claims 1 to 4, wherein the case body, the shutter, and the cantilever spring piece are made of the same synthetic resin material. A cassette main body that can accommodate a large number of recording media, an opening that is formed in a part of the cassette main body and serves as a feeding / drawing port for the recording medium, and the cassette main body so as to cover the opening And a slidably mounted shutter, and a biasing means for constantly biasing the shutter in the closing direction. The shutter is detachably mounted on the recording apparatus, and resists the biasing force of the biasing means when mounted. A feeding cassette configured to open the shutter,
A feeding cassette comprising the shutter opening and closing device according to any one of claims 1 to 5.   7. A recording apparatus having a configuration in which a feeding cassette is mounted and a recording medium accommodated in the feeding cassette is transported to a recording execution unit to perform recording, wherein the feeding cassette is described in claim 6. A recording apparatus characterized by being a cassette for feeding. A liquid ejecting apparatus having a configuration in which a feeding cassette is mounted and a liquid ejecting medium accommodated in the feeding cassette is transported to a liquid ejecting execution unit to perform liquid ejecting,
The feeding cassette includes a cassette main body that can accommodate a large number of recording media, an opening that is formed in a part of the cassette main body and serves as a feeding / drawing port for the recording medium, and covers the opening. And a biasing means for constantly biasing the shutter in the closing direction, and is detachably mounted on the recording apparatus. A liquid ejecting apparatus comprising the shutter opening and closing device according to claim 1, wherein the shutter opens against a biasing force of the means.

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