JP4957852B2 - Valve opening / closing device, liquid supply device, and liquid ejection device - Google Patents

Description

  The present invention relates to a valve opening / closing device that opens and closes a flow path valve built in a connected component to which a liquid container such as an ink cartridge is connected, and a liquid supply device and a liquid ejecting device including the valve opening / closing device.

  Conventionally, an ink jet recording apparatus is widely known as one of liquid ejecting apparatuses. An ink jet recording apparatus is loaded with an ink cartridge as a liquid container that supplies ink to a liquid ejecting head (recording head) that ejects ink as liquid.

  There are two types of ink cartridge loading methods: an on-carriage type that is loaded on a carriage having a recording head, and an off-carriage type that is loaded on a printer body. For example, in the case of the off-carriage type, the recording apparatus includes a cartridge holder as a connected component at the back of the cartridge housing port, and by inserting a supply needle protruding from the loading surface into the ink supply port on the ink cartridge side, The ink cartridge is loaded in the cartridge holder.

  In addition, when the ink cartridge is not loaded, a flow path valve is provided above the ink flow path in the cartridge holder for the purpose of preventing leakage of ink staying in the ink flow path in the cartridge holder from the hole of the supply needle. Is provided.

  2. Description of the Related Art Conventionally, a valve opening / closing device that opens and closes a flow path valve in conjunction with attachment / detachment (loading / non-loading) of an ink cartridge is known (for example, Patent Document 1). This valve opening / closing device includes a valve opening / closing mechanism and a valve opening / closing lever operatively connected to the valve opening / closing mechanism. When not loaded, the valve opening / closing lever is in a position (posture) for closing the flow path valve by the biasing force of a spring. The ink cartridge that is placed and loaded is configured to open the flow path valve by pushing the valve opening / closing lever and rotating it. In the valve opening / closing mechanism provided in this valve opening / closing device, a rocking body having the same number of magnets as a plurality of flow path valves provided for each ink color is swung in parallel with the surface of the valve arrangement portion on the cartridge holder side. An oscillating type to move was adopted. The swinging valve opening / closing mechanism is configured to operate even with power from the electric motor. For example, when the ink supply is not required, such as when printing is suspended, the flow path valve is controlled to close. Has been made. This is because even if the user removes the ink cartridge after the recording apparatus is turned on, ink leakage is less likely to occur.

JP 2005-53212 A

  By the way, in the case of a configuration in which the valve opening / closing mechanism is operated by power from the electric motor, the valve opening / closing device is provided with a power transmission mechanism for transmitting the power from the electric motor 37 to the swinging valve opening / closing mechanism. .

  When the valve is closed, the lever that transmits the power from the electric motor is operated at the valve closing position in order to operate the oscillating body constituting the valve opening / closing mechanism. In this valve closing state, the lever is held at the valve closing position. There is only an electric motor that is operatively connected to the lever. For this reason, for example, when the recording apparatus is transported by a vehicle, vibrations or small drop impacts caused by shaking during transportation are applied to the recording apparatus for a long time, and this type of repeated impact is applied to the electric motor. Could rotate. In other words, repeated impacts may cause the gears of the power transmission mechanism operatively connected to the electric motor to move, causing the lever to move and the flow path valve to open, causing ink leakage from the cartridge holder. It was. In particular, even if there is a valve opening / closing lever, if the ink cartridge is halfway with respect to the cartridge holder, the valve opening / closing lever is in the loaded state. Ink may leak from the cartridge holder.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to avoid as much as possible the problem that the flow path valve opens even if it is repeatedly subjected to vibration or impact during transportation. An object is to provide a valve opening / closing device, a liquid supply device, and a liquid ejection device.

This onset Ming, a valve device for opening and closing the flow path valve incorporated in the connecting part to be connected when the liquid container is loaded into the liquid ejecting apparatus is driven by the power from the rotational drive source An operating body that opens and closes the flow path valve, a moving mechanism that reciprocates the operating body between two positions that can open and close the flow path valve, and the liquid container is not connected to the connected component. When not loaded, the moving mechanism or the operating body is locked in a state where the operating body is disposed at a closed position where the operating body closes the flow path valve, and the liquid container is loaded in the connected component. Sometimes the first locking means for releasing the lock, the power transmission mechanism for transmitting the power from the rotational drive source to the moving mechanism, and the movement mechanism or the operating body operated by the power from the power transmission mechanism. Above Work body is summarized in that comprising second locking means for locking the state of being arranged in the closed position.

  According to this, when the liquid container is not loaded (when not connected to the connected component), the moving mechanism or the operating body is locked in a state where the operating body is in the closed position by the first locking means. For this reason, since the flow path valve is closed when the liquid container is not loaded, the liquid rarely leaks from the connection port (supply needle or the like) in the connected component. Further, when the liquid container is loaded, the lock of the first lock means is released. In this state, when the rotation drive source is driven, for example, when power in the first direction is transmitted, the operating body moves from the closed position to the open position, the flow path valve opens, and the second direction which is the opposite direction. When the motive power is transmitted, the operating body moves from the open position to the valve closing position, and the flow path valve closes. At this time, in a state where the operating body is disposed at the closed position, the moving mechanism or the operating body is in the closed position by the second lock means operated by the power transmitted through the power transmission mechanism in the process of being disposed. Locked to.

  For example, when the liquid ejecting apparatus is transported in a state where the liquid container is loaded, a component such as a gear, which is a component of the power transmission mechanism, rotates little by little due to vibrations or drop impacts repeatedly applied to the liquid ejecting apparatus. There is a concern that the operating body may move from the closed position to the open position. However, in the present invention, when the operating body is in the closed position, the moving mechanism or the operating body is locked by the second locking means, so that the flow path valve opens even if the above vibration or repeated impact is applied. There is no end to it. For this reason, there is no worry of liquid leakage. For example, when the liquid container is repeatedly inserted and removed, the liquid container is pulled out by the first locking means even if, for example, the loading of the liquid container is detected and the rotation drive source is driven in a valve-openable direction. Sometimes, the moving mechanism is locked in the closed state, so that the liquid hardly leaks from the connected parts even when the liquid container is repeatedly inserted and removed.

  In the valve opening / closing apparatus of the present invention, the second lock means allows the operation body to move when the operating body moves from the open position to the closed position, and locks the moving mechanism when the operating body moves to the closed position. It is characterized by making it.

  According to this, even if the liquid container is pulled out with the operating body in the open position, for example, the first locking means causes the moving mechanism to place the operating body in the closed position by the extraction of the liquid container. When a force is applied, the second locking means allows the operation of the moving mechanism that moves the operating body to the closed position. Therefore, when removing the liquid container, the moving mechanism places the operating body in the closed position. Locked in the locked state. As a result, even if the liquid container is pulled out in a state where the flow path valve is opened, it is possible to first avoid the liquid from leaking from the connected component.

  In the valve opening and closing apparatus of the present invention, the cam body constituting the power transmission mechanism has a first cam portion and a second cam portion, and the first cam portion engages with a cam follower of the moving mechanism. The second cam portion is engaged with a cam follower of the second lock means.

  According to this, the second cam portion is engaged with the cam follower of the second locking means, and even if the components of the power transmission mechanism are subjected to repeated impact such as vibration or drop impact, the second cam portion can In order to move the moving mechanism to the valve opening side, it is necessary to move against the urging force by the urging means. Therefore, unless the large repeated impact that overcomes this urging force is applied, the moving mechanism moves in the unlocking direction. Absent. Therefore, even if it receives repeated impacts such as vibration and drop impact, it can be made difficult to open the valve.

  In the valve opening and closing device of the present invention, the second locking means includes the cam body, a locking member having the cam follower that can be engaged with the second cam portion of the cam body, and the locking member. And an urging unit that urges the moving mechanism or the operating body in the locking direction.

  According to this, when the second cam portion is engaged with the cam follower of the locking member even when a shock or the like is repeatedly applied during transportation of the liquid ejecting apparatus and the gears constituting the power transmission mechanism move little by little, The locking member is moved in the unlocking direction against the urging force of the urging means. For this reason, in order to advance this engagement, a large force necessary to overcome the urging force of the urging means is required, and the urging force of the urging means becomes a resistance and the cam in a direction to unlock the locking member. Movement of the body is prevented. Therefore, although the locking member is configured to be operated by the rotation of the cam body that is a component of the power transmission mechanism, the component (gear, etc.) of the power transmission mechanism even if a shock is repeatedly applied during transportation of the liquid ejecting apparatus. Is prevented from moving as the locking member is moved in the unlocking direction. Thereby, it can avoid that a locking member moves to the unlocking side.

  In the valve opening and closing apparatus according to the present invention, the moving mechanism includes a slide mechanism that slidably supports the operating body, and the operating body on the slide mechanism that rotates the cam body that constitutes the power transmission mechanism. The conversion mechanism has at least two support levers that support the operating body at at least two locations, and one of the first support levers and the first cam portion. The first cam follower has an engageable first cam follower and is engaged with the first cam portion via the first cam follower, and the other second support lever is locked to the first lock means. It is characterized by.

  According to this, the operation body is movably supported by the first support lever and the second support lever of the conversion mechanism, and the first support lever converts the movement of the cam body into the movement movement of the operation body. The second support lever also serves as a portion to be locked by the first lock means. Therefore, it becomes possible to make the valve opening / closing device relatively simple.

  In the valve opening and closing device of the present invention, the operation body is a magnet body having a magnet capable of attracting the valve body constituting the flow path valve, and the magnet body is moved to the flow path valve by the moving mechanism. It moves back and forth between an open position where the valve is opened by approaching to the closed position and a closed position where the valve is closed after being separated from the flow path valve.

  According to this, in a state where the moving mechanism is in the open position where the magnet body is brought close to the valve, the valve body is attracted by the magnetic force of the magnet body, the flow path valve is opened, and the magnet body is separated from the flow path valve. In the closed position, the magnetic force of the magnet body reaches the valve body, and the flow path valve closes. Thus, the valve opening and closing device that can control the opening and closing of the flow path valve in a non-contact manner using a magnet can be configured to be relatively simple.

  Further, the present invention is a liquid supply apparatus, comprising: a connected component that is connected when a liquid container is loaded in the liquid ejecting apparatus; and the valve opening / closing apparatus according to the invention described above, The gist is that the operating body is attached to a position where the flow path valve can be opened and closed with respect to the connected component. According to this liquid supply apparatus, the same effect as the valve opening and closing apparatus of the above invention can be obtained.

  The present invention is a liquid ejecting apparatus, which is supplied via a connected component from a storage unit for storing a liquid container, the liquid supply device, and the liquid container stored in the storage unit. And a liquid ejecting head for ejecting liquid. According to this liquid ejecting apparatus, the same effect as that of the valve opening and closing apparatus of the present invention can be obtained.

1 is a perspective view illustrating a schematic configuration of an ink jet printer according to an embodiment. The top view which shows the drive system of a valve opening / closing apparatus. The disassembled perspective view of a valve opening / closing apparatus. The perspective view of a valve opening / closing apparatus. The front view of a valve opening / closing apparatus. The fragmentary perspective view of a valve opening / closing apparatus. (A), (b) is sectional drawing for demonstrating the on-off valve drive of a flow-path valve. The 1st locking mechanism at the time of cartridge non-loading is shown, (a) Top view, (b) is the BB sectional drawing in the same figure (a). The 1st locking mechanism at the time of cartridge loading is shown, (a) Top view, (b) is sectional drawing similarly. The partial front view of the power transmission mechanism which comprises a valve opening / closing apparatus. The side view of the housing which comprises a valve opening / closing apparatus. A cylindrical cam is shown, (a) is a front view, (b) is a rear view. The rear view of a cylinder. (A)-(c) The side view explaining operation | movement of a cam mechanism.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of the ink jet recording apparatus according to the present embodiment as viewed from the back side. FIG. 2 is a plan view showing the valve opening / closing device attached to the ink cartridge holder.

  As shown in FIG. 1, an ink jet recording apparatus (hereinafter referred to as “printer 10”) as a liquid ejecting apparatus includes a substantially box-shaped main body case 11. In the main body case 11, a carriage 12 is movably provided along a guide shaft (not shown) provided between a pair of left and right side plates. The carriage 12 reciprocates in the main scanning direction X shown in FIG. 1 along the guide shaft by the driving force of the carriage motor 13.

  A recording head 14 as a liquid ejecting head is provided on the lower surface side of the carriage 12, and a plurality of ejecting nozzles (not shown) for ejecting ink as liquid are formed on the recording head 14. On the other hand, the carriage 12 includes a sub-tank (not shown) and a valve unit (not shown) for supplying ink whose pressure is adjusted to the recording head 14, and pressure-adjusted four-color ink ( Black, yellow, magenta, cyan) can be supplied to the recording head 14.

  In the main body case 11, a platen (not shown) constituting the paper feeding means is arranged at a position below the space area in which the carriage 12 moves so as to be parallel to the main scanning direction X. Is fed in the sub-scanning direction Y orthogonal to the main scanning direction X. Then, the recording head 14 ejects ink droplets from the ejection nozzles onto the recording paper fed along the sub-scanning direction Y, and printing is performed.

  The printer 10 of this embodiment is an off-carriage type printer that does not mount an ink cartridge on a carriage. A cartridge housing portion (hereinafter referred to as “housing portion 15”) is recessed in the lower part on the back side of the body case 11. In the main body case 11, a cartridge holder (hereinafter referred to as “holder 20”) as a connected component (liquid container loading unit) is disposed at a position on the back side of the storage unit 15. An ink cartridge (hereinafter referred to as “cartridge 30”) as a liquid container is inserted from the container port 15a and loaded into the holder 20. Note that the cartridge 30 is a multi-color compatible cartridge with ink packs for four colors.

  As shown in FIG. 1, a pump 16 (suction pump) is disposed on the front side of the main body case 11. In the main body case 11, a band-shaped focusing channel 17 made of a flexible material is provided so as to connect the holder 20 and the carriage 12. The converging flow path 17 is obtained by converging four supply flow paths 18 constituting a liquid flow path, and each supply flow path 18 is a cartridge loaded in a holder 20 with respect to each corresponding sub tank in the carriage 12. Ink is supplied from 30. The suction side of the pump 16 communicates with a portion where the ink is discarded, and the discarded ink is discharged to the cartridge 30 through the flow path 19. Thus, the cartridge 30 of the present embodiment has a waste liquid recovery function.

  As shown in FIGS. 1 and 2, the holder 20 has a substantially rectangular plate shape that is substantially the same as the cartridge 30, and one end surface side (the lower surface side in FIG. 2) facing the accommodation port 15 a is the cartridge. There are 30 connection surfaces (loading surfaces). The connection surface of the holder 20 has a pair of positioning projections 21 and 22 positioned near both ends, and a plurality of (four in this example) ink supply needles (hereinafter referred to as “supply needles”) arranged at approximately equal intervals therebetween. 23 ”) (liquid introduction part) and a waste ink lead-out needle 24 (waste liquid lead-out part) arranged in the vicinity of the outside of one positioning projection 21. A conduction hole (not shown) is formed at the tip of each supply needle 23 and the waste ink outlet needle 24. In the holder 20, ink channels (liquid channels) communicating individually with the respective supply needles 23 are formed, and each of these ink channels has a corresponding discharge pipe portion 25 (discharge port) (FIG. 2). Communication). Each supply pipe 18 (tube) of the converging flow path 17 is connected to each discharge pipe section 25. The holder 20 is provided with an introduction pipe portion 26 so that the flow path 19 (tube) is connected to the introduction pipe portion 26.

  As shown in FIG. 1, the cartridge 30 has a bottomed box shape, and a pair of positioning support ports at positions corresponding to the pair of positioning protrusions 21 and 22 on the holder 20 side are connected to the front surface of the holder 20. Portions 31 and 32 are formed. Further, on the front surface of the cartridge 30, at positions corresponding to the plurality of supply needles 23 and the waste ink outlet needles 24 on the holder 20 side, a plurality of ink supply support port portions 33 and a waste ink introduction port portion 34 are provided. Each is formed.

  Therefore, when the cartridge 30 is loaded in the holder 20, the positioning protrusions 21 and 22 are inserted into the corresponding positioning support ports 31 and 32 and intersect the loading direction of the cartridge 30 (Y direction in FIG. 1). Restrict movement in the direction. The cartridge 30 is provided with a circuit board (not shown) in a recess in the lower front portion of the cartridge 30. When the cartridge 30 is loaded in the holder 20, the circuit board protrudes from the lower edge of one end of the connection surface of the holder 20. It is connected to a terminal portion (not shown) provided. In a state where the terminal portion is connected to the circuit board, the ink consumption and other information are transmitted between the cartridge 30 and the control unit (not shown) of the printer 10.

  Further, as shown in FIG. 1, a handle lever 28 is provided at one end side of the accommodation port 15a in the accommodation portion 15, and when the handle lever 28 is rotated so as to push in the cartridge 30, a speed reduction mechanism (FIG. The cartridge 30 can be inserted into the supply needle 23 or the like on the holder 20 side with a relatively light operating force via a not-shown). When the cartridge 30 is loaded, the cartridge 30 is locked at its loading position by a locking mechanism (not shown).

  Here, the holder 20 incorporates a flow path valve 76 (shown in FIG. 7) provided for the purpose of preventing the back flow of ink on the flow path in the holder 20. As shown in FIG. 2, a valve opening / closing device 50 that opens and closes the flow path valve 76 is attached to one end of the back surface that is opposite to the connection surface of the holder 20. The valve opening / closing device 50 includes a power transmission mechanism 52 at one end portion (right end portion in FIG. 2) of the housing 51, and a valve opening / closing lever 53 at the other end side (left end side in FIG. 2) of the housing 51. . The valve opening / closing lever 53 is urged in a direction protruding into the accommodating portion 15. When the cartridge 30 is loaded and the valve opening / closing lever 53 is pushed, the valve opening / closing device 50 releases the lock of the flow path valve 76 at the closed position and transmits power from the electric motor 37 under the unlocked state. This is a device that controls the opening and closing of the flow path valve 76 in the holder 20 by the power input to the mechanism 52. In the present embodiment, the electric motor 37 is a paper feed motor, and the valve opening / closing device 50 is driven by power from an electric motor 37 that drives a paper supply / discharge device that feeds, feeds, and discharges recording paper. Is done.

  As shown in FIG. 2, a paper supply / discharge mechanism 36 is provided at the rear of the printer 10 at a position above the housing unit 15. The paper supply / discharge mechanism 36 includes a paper supply device, a paper feed mechanism, and a paper discharge mechanism, and uses one electric motor 37 as a drive source. In FIG. 2, the paper feeding device is omitted. The rotation of the pinion gear 38 fixed to the drive shaft of the electric motor 37 is transmitted to the two-stage gear 40 via the gear 39 and further transmitted to the gear 42 fixed to the end of the paper feed roller shaft 41. Then, the paper feed roller shaft 41 rotates. The rotation of the two-stage gear 40 is also transmitted to the gear 46 fixed to the end of the paper discharge roller shaft 45 via the two gears 43 and 44, and the paper discharge roller shaft 45 is rotated by the rotation of the gear 46. Is designed to rotate. A slit disk 40a for an encoder is fixed to the two-stage gear 40, and a sensor 47 that detects the intermittent number of light passing through the slit of the slit disk 40a and outputs a pulse signal is provided. Based on the pulse signal output from the sensor 47, the paper feed amount of the recording paper is obtained by a control unit (not shown) of the printer 10.

  The gear 46 is operatively connected to a power transmission mechanism 52 provided at one end (right end in FIG. 2) of the housing 51 of the valve opening / closing device 50 via a gear 48, and the power from the electric motor 37 is transmitted to the power. The valve opening / closing device 50 is driven by being transmitted to the mechanism 52. In the present embodiment, the electric motor 37 is set to be driven in the same rotational direction when paper feed / paper feed / discharge is performed and when the valve opening / closing device 50 opens the flow path valve 76. Has been. When the valve opening / closing device 50 closes the flow path valve 76, the electric motor 37 is driven in a rotation direction opposite to the rotation direction when paper supply / discharge is performed.

(Valve open / close device)
Next, the configuration of the valve opening / closing device 50 will be described in detail.
FIG. 3 is an exploded perspective view of the valve opening / closing device 50, and FIG. 4 is a perspective view of the valve opening / closing device 50. FIG. 5 is a front view of the valve opening / closing device 50, and FIG. 6 is a perspective view of the main part showing the peripheral part of the moving mechanism of the magnet body. The valve opening / closing device 50 of this embodiment is a system that opens and closes the flow path valve 76 using the magnetic force of a magnet. Further, the valve opening / closing device 50 includes a lock mechanism (first lock means) for forcibly closing and locking the flow path valve 76 when the cartridge is not loaded, and a flow path by reciprocating a magnet by the power of the electric motor 37. And a mechanism for opening and closing the valve 76. In particular, the characteristic configuration of the valve opening / closing device 50 of the present embodiment is that the second locking means for holding the closed state when the flow path valve 76 is in the closed state even when the cartridge is unlocked. It is in the point to have.

  As shown in FIGS. 3 to 5, the valve opening / closing device 50 includes a first locking mechanism 54 as a first locking means, a moving mechanism 56 that moves the magnet body 55, and a power for transmitting power to the moving mechanism 56. A power transmission mechanism 52 and a second lock mechanism 57 as second lock means are provided.

The first lock mechanism 54 includes a valve opening / closing lever 53 and a torsion coil spring 58 that urges the valve opening / closing lever 53 in a direction in which the valve opening / closing lever 53 protrudes into the housing portion 15.
(Movement mechanism)
As shown in FIGS. 1 to 6, the magnet body 55 includes a magnet 59 (shown in FIG. 5), a yoke 60, and a holder 61. The square plate-shaped magnet 59 is in a state in which the back surface and side surfaces are wrapped in a yoke 60 made of a metal plate of a ferromagnetic material, and the end of the yoke 60 is magnetized to a position that is substantially flush with the magnet surface of the magnet 59. Projects around 59. This is because the magnetic field lines (magnetic flux) of the magnet 59 are concentrated by the yoke 60 on the front surface of the magnet body 55 (on the side facing the flow path valve 76), and the valve body 81 made of a ferromagnetic material constituting the flow path valve 76 ( This is to increase the magnetic force extending to (see FIG. 7). As the magnet 59, a rare earth magnet having a relatively strong magnetic force such as a neodymium magnet or a samarium magnet is used. Of course, a ferrite magnet or the like can also be used.

  The holder 61 is a rectangular cylindrical resin holder and accommodates the yoke 60 that encloses the magnet 59. The magnet 59 is housed in an exposed state from one opening of the holder 61, and the end of the yoke 60 disposed around the magnet 59 is covered with the peripheral edge of the opening of the holder 61. The holder 61 has a pair of support arm portions 62 and 62 extended outward on the back side opposite to the exposed side of the magnet 59. The support arm portions 62 and 62 are guided by guide grooves 63 that are notched and formed at positions facing the pair of support arm portions 62 and 62 in the rectangular cylindrical housing portion 51 a of the housing 51. 62 is in a state of being inserted into the guide groove 63. In a state where the support arm portion 62 is inserted through the guide groove 63, the magnet body 55 is a surface of a portion in which the flow path valve 76 on the holder 20 side is built in, and exerts a magnetic force on the magnetic force acting surface 78 (see FIG. 7). On the other hand, it is possible to move (slide) in the horizontal direction to approach and separate in the vertical direction. As shown in the figure, the yoke 60 that encloses the magnet 59 is fixed in a state of being accommodated in the holder 61 by being locked by a pair of locking pieces 61 a extending along the inner wall surface of the holder 61. Has been.

  A swing lever body 65 is rotatably attached to the housing 51 at a position adjacent to the upper side of the housing portion 51a in which the magnet body 55 is housed. The swing lever body 65 includes a shaft portion 66 that serves as a center of rotation, and a first support lever 67 and a second support lever 68 that extend from both ends of the shaft portion 66 in substantially the same direction (downward in FIG. 3). And have. The first and second support levers 67 and 68 have concave portions 67a and 68a at positions facing the support arm portion 62 of the holder 61, and the pair of support arm portions 62 and 62 are provided in the respective concave portions 67a and 68a. Be contained.

  The shaft portion 66 of the swing lever body 65 has a support shaft 69 having a small shaft diameter at both ends. In the figure, the swing lever body 65 pivotally supports the left support shaft 69 in a support hole 51j (see FIG. 11) drilled in the side wall of the housing 51, and the right end sandwiches the base portion of the second support lever 68. The support shaft 69 is rotatably supported by inserting the support shaft 69 into the hole 70a of the extension portion 70 and holding the portion near the right end of the shaft portion 66 in the support recess 71 so as to be pivotally supported at two locations on both sides. Yes. A square plate-like restricting portion 72 protrudes from the base portion of the first support lever 67, and the restricting portion 72 abuts against a relative portion of the housing 51, whereby the swing lever body 65 moves toward the flow path valve 76. The swing lever body 65 is arranged at the open position. In addition, a protrusion 73 is provided on the inner wall surface of the accommodating portion 51a in which the magnet body 55 is accommodated, whereby the swing lever body 65 is restricted from moving away from the flow path valve 76 and closed. It is arranged at the position. Therefore, when the swing lever body 65 is rotated, the magnet body 55 in which the support arm portions 62 and 62 are placed in the recesses 67 a and 68 a of the first and second support levers 67 and 68, with respect to the flow path valve 76. The holder 20 side slides in a direction perpendicular to the magnetic force acting surface 78 (see FIG. 7).

  FIG. 7 is a cross-sectional view for explaining the opening / closing operation of the flow path valve by the magnet body. 2 is a cross-sectional view taken along the line AA in FIG. 2 and is a perspective view in which a cylindrical cam and a lock lever, which will be described later, can be seen by omitting a part of the housing. In the holder 20, flow paths 75 communicating with the plurality of supply needles 23 are respectively formed, and flow path valves 76 are provided on the respective flow paths 75, and each flow path 75 is located downstream of the flow path valve 76. And communicates with each discharge pipe portion 25 (discharge port) (only one is shown in the figure). A plurality of (four in this example) flow path valves 76 are assembled in one place in the holder 20 opposite to the magnet body 55 and incorporated in parallel, and constitute a valve portion 77 of the holder 20. A surface of the valve portion 77 facing the magnet body 55 is a magnetic force acting surface 78. The flow path valve 76 includes a cylindrical body 80 accommodated in a valve chamber 79 defined in the holder 20, a valve body 81 slidably inserted in the cylindrical body 80, and the valve body 81. And a spring 82 urging in the valve closing direction (right direction in the figure). The flow path valve 76 is closed by the valve body 81 coming into contact with the valve seat 83 by the biasing force of the spring 82 when the magnet body 55 is separated from the magnetic force acting surface 78 as shown in FIG. When the magnet body 55 is close enough to substantially contact the magnetic force acting surface 78 as shown in FIG. 4B, the valve body 81 is attracted by the magnetic force of the magnet body 55 and the flow path valve 76 is attracted. Is now open. The operating mechanism for moving the magnet body 55 depicted in the figure will be described later.

  Returning to FIG. 6, the second support lever 68 of the swing lever body 65 is formed with a contact portion 68 b having a square plate shape at the tip, and the contact opening portion 68 b of the valve opening / closing lever 53 will be described later. The arm 87 comes into contact.

  A valve opening / closing lever 53 is pivotally supported by the housing 51 on one side (right side in the figure) of the adjacent positions on both sides of the swing lever body 65. The valve opening / closing lever 53 includes a shaft portion 85, a lever portion 86 extending from the shaft portion 85, and a working arm 87 extending so as to have a base portion on the opposite side of the base portion of the lever portion 86 across the shaft portion 85. And have. The valve opening / closing lever 53 has support shafts 88, 88 at both ends of the shaft portion 85. The valve opening / closing lever 53 is supported by one side (upper side) of the support shaft 88 inserted into a long hole 89a of an extension part 89 extending to the upper side of the upper wall of the housing 51 and is pivotally supported. 51b is inserted into and supported by the upper portion of the shaft portion 85, and the other (lower) support shaft 88 is inserted into the support hole 51c drilled in the lower wall of the housing so that the shaft portion 66 and the axis line of the swing lever body 65 are connected. The shaft portion 85 is disposed so as to be rotatable with respect to the housing 51 in a state in which the shaft portion 85 is arranged in the vertical direction orthogonal to each other. The lever portion 86 is in contact with the front surface of the cartridge 30 when the cartridge is loaded, and the valve opening / closing lever 53 rotates when the lever portion 86 is pushed by the cartridge 30. A torsion coil spring 58 is attached to the valve opening / closing lever 53 so as to be inserted into the shaft portion 85, and one end of the torsion coil spring 58 is hooked on a spring receiving portion 86 a protruding from the upper surface of the lever portion 86. The end is hooked on a spring receiving portion 51d (see FIG. 8) protruding from the lower end portion of the upper wall of the housing 51. For this reason, the valve opening / closing lever 53 is biased so as to rotate the lever portion 86 in the direction of the front side of the magnet body 55, that is, in the direction protruding from the housing portion 15. The valve opening / closing lever 53 is disposed in a state of projecting into the housing portion 15 by being in contact with the end portion of the housing 51 while being rotationally biased by the torsion coil spring 58 and being regulated in position. The posture angle of the lever portion 86 arranged at the protruding position with respect to the longitudinal direction of the housing 51 is such that the lever portion 86 rotates in the direction opposite to the biasing direction of the torsion coil spring 58 when pushed in the cartridge loading direction. Is set.

  On the other hand, the operating arm 87 of the valve opening / closing lever 53 has a length capable of coming into contact with the contact portion 68b of the second support lever 68 from the back side. The distal end of the working arm 87 is slightly bent and extended toward the contact portion 68b so that the contact portion 68b of the second support lever 68 can be pushed almost straight from the back side when the valve opening / closing lever 53 rotates. Yes.

  8 and 9 show the valve opening / closing lever and the swing lever body. FIG. 8 shows a state in which the valve opening / closing lever is arranged at the protruding position when the cartridge is not loaded, and FIG. 9 shows the retracted position when the valve opening / closing lever is loaded. Each of the states shown in FIG. In these drawings, (a) is a plan view, and (b) is a schematic diagram of a cross section taken along line BB in FIG. 8 (a). Further, in the plan view of FIG. 9A, the direction from top to bottom is the cartridge loading direction. As shown in FIG. 8, when the cartridge is not loaded, the lever portion 86 of the valve opening / closing lever 53 protrudes from the holder 20 toward the housing portion 15. The state of being arranged at this protruding position is the lock position of the valve opening / closing lever 53, and when the cartridge is not loaded, the distal end portion of the operating arm 87 contacts the contact portion 68b of the second support lever 68 of the swing lever body 65. It pushes in from the back side, and in this state, the magnet body 55 is disposed at the retracted position (position of FIG. 7A) separated from the magnetic force acting surface 78 of the holder 20.

  As shown in FIG. 9A, when the cartridge is loaded, the valve 30 is pushed into the cartridge 30 and the valve opening / closing lever 53 rotates from the locked position in the clockwise direction in FIG. 9A. As shown, the tip of the working arm 87 is moved away from the contact portion 68 b of the second support lever 68 by a predetermined distance. The position of the valve opening / closing lever 53 arranged at this retracted position is the unlock position. In this unlocked position, the second support lever 68 of the swing lever body 65 is unlocked, and in this unlocked state, the first support lever 67 (to be described later) is unlocked, and the swing lever body 65 swings. The lever body 65 is in a rotatable state.

  As shown in FIGS. 3 to 5, the above-described power transmission mechanism 52 that inputs and transmits power from the electric motor 37 is provided at an adjacent position on the side opposite to the valve opening / closing lever 53 side of the swing lever body 65. It is arranged. The power transmission mechanism 52 has a function of transmitting the power from the electric motor 37 to the first support lever 67 to rotate the swing lever body 65.

  The power transmission mechanism 52 includes a two-stage gear 90 that serves as an input gear for inputting power from the electric motor 37, a two-stage gear 91 that meshes with the small-diameter gear section 90 b of the two-stage gear 90, and a small-diameter gear section 91 b of the two-stage gear 91. And a clutch cam mechanism 92 that meshes with the clutch cam mechanism 92. The clutch cam mechanism 92 includes a friction clutch gear mechanism 93 and a cylindrical cam 94 as a cam body. The friction clutch gear mechanism 93 includes a gear 95, a cylinder 96 that is coaxially attached to the gear 95 so as to be rotatable relative to the gear 95, and a coil spring 97 that urges the gear 95 to press against the cylinder 96. Is attached to the cylinder 96 so as to be rotatable relative to the cylinder 96.

Three shaft portions 51f, 51g, and 51h are projected from the side wall 51e of the housing 51. The two-stage gear 90 is attached to the shaft portion 51f, and the two-stage gear 91 is attached to the shaft portion 51g. 94, the cylinder 96, the gear 95, and the coil spring 97 are attached to the shaft portion 51h (see FIGS. 4 and 5).
The cylinder 96 constituting the friction clutch gear mechanism 93 can be reciprocally rotated with respect to the cylindrical cam 94 within a predetermined rotation angle range (about 330 degrees in this example). Reciprocating rotation is possible within a predetermined rotation angle range (about 290 degrees in this example) with respect to the side wall 51e. The cylindrical cam 94 has a cam surface formed on a part of its outer periphery, and engages with a first support lever 67 of a swing lever body 65 and a lock lever 98 described later to rotate (swing) them. To place in a predetermined position.

  The two-stage gear 90 serving as an input gear has a larger diameter than the next-stage two-stage gear 91, and the power is transmitted from the two-stage gear 90 to the two-stage gear 91 at an increased speed. The two-stage gear 90 includes a large-diameter gear portion 90a and a small-diameter gear portion 90b. The large-diameter gear portion 90a meshes with a gear 48 (see FIG. 2) constituting a gear train of a transport system (feed / discharge system), and the small-diameter gear portion 90b meshes with the large-diameter gear portion 91a of the two-stage gear 91. Further, the small-diameter gear portion 91 b of the two-stage gear 91 meshes with the gear 95 constituting the friction clutch gear mechanism 93. The cylindrical cam 94 and the cylinder 96 have tooth portions 94a and 96a partially missing, respectively, and the small-diameter gear portion 91b of the two-stage gear 91 has a predetermined axial length and is assembled. In the state, they are assembled so as to mesh with the gear portions 95a, 96a, 94a of the gear 95, the cylinder 96, and the cylindrical cam 94.

  In addition, a lock lever 98 is assembled to the power transmission mechanism 52. As shown in FIG. 11, the lock lever 98 is inserted together with the torsion coil spring 99 to the shaft portion 51 i protruding from the side wall 51 e of the housing 51, and the torsion coil spring 99 is applied to the lock lever 98 by the biasing force. The first support lever 67 extending toward the side wall 51e is urged in a direction (upward in the figure) to be locked. The lock lever 98 is attached to a position where it can be engaged with the cam surface of the cylindrical cam 94 by being inserted into the shaft portion 51i. When the cylindrical cam 94 is rotated, the lock lever 98 is engaged with the cam surface within a predetermined range. Are reciprocally rotated (oscillated). Details of the operation mechanism of the lock lever 98 will be described later.

  Returning to FIG. 3, the cover member 100 is attached to the housing 51 so as to cover the side wall 51e. The cover member 100 is attached to the housing 51 by locking, and has three extending portions 101, and the engaging members 101 a of the extending portions 101 protrude from the upper surface and the bottom surface of the housing 51. It is attached to the housing 51 by being engaged with the pawl 51k. At this time, the coil spring 97 is assembled in a compressed state between the gear 95 and the inner surface of the cover member 100. The two shaft portions 51g and 51h are inserted into the shaft holes 100a formed in the cover member 100, and the shaft portions 51f are inserted into shaft holes (not shown) recessed in the inner surface of the cover member 100. The cover member 100 is attached in a state where the distal end portion is inserted. Further, the shaft portion 51 i is inserted into a hole of a cylindrical support portion 100 b that protrudes from the lower inner corner of the cover member 100.

(Power transmission mechanism)
Next, the clutch cam mechanism and the lock lever operating mechanism in the power transmission mechanism will be described in detail. FIG. 10 is a front view of the clutch cam mechanism. As shown in FIG. 10, the clutch cam mechanism 92 is configured by attaching a cylindrical cam 94, a cylinder 96, a gear 95, and a coil spring 97 to the shaft portion 51h in this order. The contact surface between the gear 95 and the cylinder 96 is frictionally engaged by receiving the urging force of the coil spring 97. When the load applied to the cylinder 96 is larger than the engagement friction force (static friction force), the contact surface is brought into contact. While the surface (clutch surface) slips and only the gear 95 is idle, the cylinder 96 rotates integrally with the gear 95 by friction engagement while the load applied to the cylinder 96 is less than the engagement friction force.

  FIG. 11 is a side view showing the side wall of the housing, and the gear, cylinder, and cylindrical cam are all removed. An arcuate arc groove 51m is formed in the side wall 51e so as to be concentric with the shaft 51h around the shaft 51h. The first support lever 67 extends on the side wall 51e side, and the lock lever 98 has a stopper portion 98a projecting upward at the tip portion, and in the vicinity of the tip portion of the first support lever 67. The stopper portion 98a is positioned and urged counterclockwise by the torsion coil spring 99 in FIG. A cylindrical protrusion 98b is provided on the side surface of the stopper portion 98a. The protrusion 98b is inserted into a restriction hole 51n opened in the side wall. The lock lever 98 has a protrusion 98b in the restriction hole 51n. Can be swung within a movable range. The lock lever 98 is urged counterclockwise in the figure, and is in a locking position (lock position) that can be engaged with the first support lever 67 when the protrusion 98b is positioned at the upper limit of the restriction hole 51n. The protrusion 98b is disposed at a retracted position (unlock position) where it cannot be engaged with the first support lever 67 when the protrusion 98b is positioned at the lower limit of the restriction hole 51n. One end of the torsion coil spring 99 is hooked on the lower surface of the lock lever 98, and the other end is hooked on a pin 51p protruding from the side wall 51e.

  FIG. 12 shows a cylindrical cam, where FIG. 12 (a) is a front view and FIG. 12 (b) is a rear view. As shown in FIG. 5A, an arc-shaped arc groove 94c is recessed in the front surface of the cylindrical cam 94 over an angle range of about 330 degrees around the shaft hole 94b. As shown in FIG. 10, the cylindrical cam 94 is configured by integrally forming a first cam portion 102, a second cam portion 103, and a tooth portion 94a in this order in the axial direction in a coaxial state. . A protrusion 104 is formed on the first cam portion 102, and the protrusion 104 is engaged with an arc groove 51m formed in the side wall 51e. For this reason, the cylindrical cam 94 is configured to reciprocately rotate in an angular range of about 290 degrees in which the protrusion 104 can move in the arc groove 51m.

  As shown in FIG. 12B, on the back surface of the cylindrical cam 94, a first cam portion 102 and a second cam portion 103 are formed around a shaft hole 94b, and the first cam portion 102 has an outer peripheral surface. The first cam region 102a in which the radius of the cam surface portion is substantially the same as the bottom surface of the tooth portion 94a, and the second cam region 102b in which the radius gradually decreases continuously from the first cam region 102a. Have. The cylindrical cam 94 rotates about an angle range of about 290 degrees. In this rotation range, the first cam region 102 a and the second cam region 102 b can engage with the back surface portion of the first support lever 67. Thus, the back surface portion of the first support lever 67 is a first cam follower that engages with the first cam portion 102. In the present embodiment, the first cam unit 102 and the second cam follower constitute first conversion means for converting the rotation of the cylindrical cam 94 into the swing (reciprocal rotation) of the first support lever 67. When the first cam region 102 a of the first cam portion 102 is engaged with the first support lever 67, the swing lever body 65 is magnetized by the first support lever 67 being pushed by the first cam portion 102. When the body 55 is disposed at the closed position separated from the magnetic force acting surface 78 and the second cam region 102b is engaged with the first support lever 67, the swing lever body 65 is configured such that the magnet body 55 is the magnetic force acting surface. It is arranged in an open position close to 78. Of course, when the cartridge is not loaded, the operating arm 87 of the valve opening / closing lever 53 pushes in the contact portion 68b of the second support lever 68. It is held (locked) in the closed position.

  The second cam portion 103 is formed with a convex portion 103a having substantially the same diameter as the top surface of the tooth portion 94a, and the outer peripheral surface other than the convex portion 103a is an arc surface having substantially the same diameter as the bottom surface of the tooth portion 94a. It has become. The protrusion 103a protrudes over a central angle of about 120 degrees, and its top surface is an arc surface. For this reason, in a predetermined rotation angle range of the rotation range of the cylindrical cam 94, the convex portion 103a comes into contact with the upper surface of the lock lever 98, and the convex portion 103a comes into contact with the upper surface of the lock lever 98. Sometimes, the lock lever 98 is pushed in the clockwise direction in FIG. 11 against the urging force of the torsion coil spring 99 and retreats to a retreat position (unlock position) where it cannot be engaged with the first support lever 67.

  The positional relationship between the second cam region 102b and the projection 103a is such that when the lock lever 98 is retracted from the lock position to the unlock position, the first support lever 67 rotates from the closed position to the open position, and then locks. The timing is set so that the lever 98 returns to the locked position again. Further, the tooth portion 94a of the cylindrical cam 94 has both end points (both ends) of the finite rotation range when the cylindrical cam 94 reciprocates and rotates within the finite rotation range (about 290 degrees in the rotation angle range). It is formed at a position and a range where it can mesh with the small-diameter gear portion 91b of the two-stage gear 91 in the intermediate region except that it is in the middle of rotation.

  FIG. 13 is a rear view of the cylinder. The cylinder 96 has a shaft hole 96 b, and a projection 96 c projects from the back surface of the cylinder 96, that is, the surface facing the cylinder cam 94, at a position corresponding to the arc groove 94 c of the cylinder cam 94. In a state where the cylindrical cam 94 is arranged in contact with the coaxial state, the protrusion 96c is inserted into the arc groove 94c as shown by a two-dot chain line in FIG. For this reason, the cylinder 96 can reciprocate within a finite rotation range of about 330 degrees with respect to the cylindrical cam 94. Therefore, while the projection 96c moves from one end (start point) to the other end (end point) of the arc groove 94c, even if the cylinder 96 rotates, it only rotates idly and the rotational force is not transmitted to the cylindrical cam 94. The rotational force of the cylinder 96 is transmitted to the cylindrical cam 94 only after the projection 96c reaches the other end (end point), and the cylindrical cam 94 rotates together with the cylinder 96. In other words, the projection 96c of the cylinder 96 and the arc groove 94c of the cylindrical cam 94 constitute transmission delay means for delaying transmission of rotational force. In the present embodiment, the delay rotation amount of the transmission delay means is set to about one turn (about 330 degrees). Of course, the delay rotation amount can be set to an appropriate value less than 360 degrees. As described above, the cylinder 96 is approximately the sum of the delay rotation amount (about 330 degrees) and the finite rotation range (about 290 degrees) of the cylindrical cam 94 when the projection 96c is inserted into the arc groove 94c of the cylindrical cam 94. It reciprocates around a finite rotation range of 620 degrees.

  In addition, a tooth portion 96 a that is partially missing is formed on the outer peripheral surface of the cylinder 96. The tooth portion 96a is not meshed with the small-diameter gear portion 91b of the two-stage gear 91 at a rotation angle position where the cylinder 96 is positioned in the vicinity of both end points of the finite rotation range (about 620 degrees). It is formed so that it can mesh. That is, while the cylinder 96 is rotating in the finite rotation range, the tooth portion 96a meshes with the small diameter gear portion 91b, and the tooth portion 96a is in the vicinity of both ends (both end points) of the finite rotation range. It is set not to mesh with. For this reason, when the gear 95 frictionally engaged with the cylinder 96 via the contact surface (clutch surface) rotates, the tooth portion 96a has a small-diameter gear portion in the midway range in which the cylinder 96 reciprocates in its finite rotation range. When meshing with 91b and reaching either end point of the finite rotation range, the meshing between the tooth portion 96a and the small-diameter gear portion 91b is released, the clutch surface slips and only the gear 95 rotates, and the cylinder 96 Stops at the end point.

  FIG. 14 is a diagram illustrating the operation of the first support lever and the lock lever. This figure shows the first support lever 67 and the lock lever 98 as viewed from the magnet body 55 side. FIG. 14A shows a state in which the valve opening / closing lever 53 is in the protruding position (lock position) (see FIG. 8) and the swing lever body 65 is in the closed position when the cartridge is not loaded. In this state, since the stopper portion 98a of the lock lever 98 is locked to the tip of the first support lever 67, the electric motor 37 is driven and the cylindrical cam 94 rotates clockwise in FIG. As described above, even when the second cam region 102b of the first cam portion 102 is disposed at a position facing the first support lever 67, the first support lever 67 is held at the closed position. For this reason, the flow path valve 76 is maintained in a closed state without being opened (see FIG. 7A).

  FIG. 14B shows that when the cartridge is loaded, the valve opening / closing lever 53 is in the retracted position (unlock position) and the swing lever body 65 is in the closed position, but the operating arm 87 of the valve opening / closing lever 53 is the second support. It is separated from the lever 68 (see FIG. 9). In this state, when the electric motor 37 is driven and the cylindrical cam 94 rotates in the clockwise direction in the figure, the convex portion 103a first engages with the lock lever 98 and the lock lever 98 moves to the retracted position (unlock position). Next, the contact position of the first support lever 67 with the first cam portion 102 shifts from the first cam region 102a to the second cam region 102b, and the first support lever 67 is moved to the same figure (c). Move to the open position shown. After the first support lever 67 is moved to the open position, the lock lever 98 is not engaged with the convex portion 103a and returned to the lock position again as shown in FIG. By disposing the first support lever 67 in this open position, the magnet body 55 approaches the flow path valve 76 so that the flow path valve 76 is opened (see FIG. 7B).

  The rear surface of the front end of the first support lever 67 is an arcuate curved surface 67b. The first support lever 67 in the open position as shown in FIG. 14 (c) has a contact with the second support lever 68 of the swing lever body 65 when the cartridge 30 is pulled out and the valve opening / closing lever 53 rotates to the lock position. When the contact portion 68b is pushed into the action arm 87, it is pushed toward the closed position. At this time, if the first support lever 67 tries to move to the closed position side, the stopper portion 98a is pushed down by the curved surface 67b formed at the tip thereof, and the first support lever 67 gets over this, so that the swing lever body 65 Is placed in the closed position. Thus, even when the lock lever 98 is in the lock position, the first support lever 67 can be returned from the open position to the closed position.

Next, operations of the printer 10 and the valve opening / closing device 50 configured as described above will be described.
First, as shown in FIG. 1, when the cartridge 30 is not loaded, the valve opening / closing lever 53 is arranged at the protruding position (lock position) indicated by the chain line in FIG. In this state, as shown in FIGS. 8A and 8B, the operating arm 87 of the valve opening / closing lever 53 presses the contact portion 68b of the second support lever 68 from the back surface, and the swing lever body 65 is closed. Placed in position. For this reason, the magnet body 55 is disposed at a closed position separated from the magnetic force acting surface 78, and the flow path valve 76 is closed. Thus, when the cartridge is not loaded, the flow path valve 76 is locked in the closed state by the function of the first lock mechanism 54. For this reason, ink does not leak from the supply needle 23 of the holder 20. For example, even if the electric motor 37 is driven in this state, the valve is not opened. That is, the electric motor 37 is driven, the cylindrical cam 94 is rotated to the rotation angle position shown in FIG. 14B, the lock lever 98 is retracted to the unlock position, and the second lock mechanism 57 is unlocked. However, since the operating arm 87 pushes the contact portion 68b and the first lock mechanism 54 remains locked, the swing lever body 65 is forcibly locked in the closed position.

  Next, when the cartridge 30 is loaded, the cartridge 30 pushes and rotates the valve opening / closing lever 53, so that the valve opening / closing lever 53 is disposed from the protruding position to the retracted position. At this time, as shown in FIGS. 9A and 9B, the operating arm 87 of the valve opening / closing lever 53 is separated from the contact portion 68b of the second support lever 68 by a predetermined distance, and the lock of the first lock mechanism 54 is achieved. Is released. It is not until the unlocked state shown in FIG. 9 is it possible to drive the opening / closing valve of the flow path valve 76 by driving the electric motor 37. Therefore, only by loading the cartridge 30, the swing lever body 65 is maintained in the closed position, and the flow path valve 76 remains closed. At this time, when the cartridge 30 is loaded, the supply needle 23 on the holder 20 side is inserted into the ink supply support port 33 of the cartridge 30, so that ink can be supplied from the cartridge 30 to the holder 20.

  In the printer 10 of the present embodiment, when the printing is not performed, the control for closing the flow path valve 76 is basically performed. For example, even if the printer 10 is powered on, if printing is not performed, the flow path valve 76 remains closed. In this state, for example, when print data is received from the host computer and the print start time comes, the electric motor 37 is driven reversely by a predetermined amount of rotation in order to open the flow path valve 76. When the electric motor 37 is driven in reverse while the first lock mechanism 54 is unlocked, the lock lever 98 is convex when the cylindrical cam 94 reaches the rotation angle position shown in FIG. It is pushed into the portion 103a and retracts to the unlock position. After that, the engagement point where the first support lever 67 engages with the first cam portion 102 shifts from the first cam region 102a to the second cam region 102b, so that the first support lever 67 is moved as shown in FIG. ) To the open position shown in In this process, at the timing when the movement of the first support lever 67 from the closed position to the open position is completed, the lock lever 98 stops engaging with the convex portion 103a, and the lock lever 98 is shown in FIG. Return to the locked position. Thus, the swing lever body 65 is disposed at the open position shown in FIG. 7B, so that the magnet body 55 is disposed at the open position and the flow path valve 76 is opened.

  During printing, the electric motor 37 is driven to rotate forward for paper feeding / paper feeding / paper ejection. At this time, the cylindrical cam 94 is in the rotational position when the valve is opened as shown in FIG. 14C, and the friction engagement surfaces of the gear 95 and the cylinder 96 slip even if the forward rotation of the electric motor 37 is continued. Since the cylindrical cam 94 is positioned at the end point of the reciprocating rotation range, the cylindrical cam 94 does not rotate further in the clockwise direction in FIG. For this reason, at the time of paper supply / discharge, the first support lever 67 is held in the open position, and the flow path valve 76 is maintained in the open state.

  For example, the electric motor 37 is reversely driven in order to back-feed (reverse feed) the recording paper during the cueing process after feeding. At the start of the reverse rotation drive, both the cylinder 96 and the cylindrical cam 94 are positioned at the end point of the reciprocating rotation range (the end point of the clockwise rotation in FIG. 14). After passing through a predetermined number of revolutions of 96, the cylindrical cam 94 starts to rotate. That is, the rotation start timing of the cylindrical cam 94 is delayed.

  At the time of back feed, the valve closing operation of the valve opening / closing device 50 is not performed due to the delay action of the rotation start timing of the cylindrical cam 94. That is, the reverse drive amount for the back feed of the electric motor 37 is set to the delayed rotation amount of the cylinder 96, and the convex portion 103a of the cylindrical cam 94 retracts the lock lever 98 to move the first support lever 67 from the closed position to the open position. Since it is within the rotation amount corresponding to the rotation amount of the cylinder 96 including the rotation amount until the movement is started, the valve closing operation of the valve opening / closing device 50 is not performed. Thereafter, during printing, the electric motor 37 is driven to rotate forward for both paper feeding and paper discharge, so that the flow path valve 76 is kept open.

  Next, when printing is stopped, the electric motor 37 is driven in reverse to close the flow path valve 76. Due to this reverse rotation drive, after a delay time due to the action of the transmission delay means described above, the cylindrical cam 94 starts to rotate, and the first support lever 67 engaged with the first cam portion 102 of the cylindrical cam 94 moves from the open position. Rotate to the closed position. Thereby, the magnet body 55 moves from the open position to the closed position, and the flow path valve 76 is closed.

  Further, in the process of rotation of the cylinder 96 and the cylindrical cam 94, tooth portions 96a and 94a formed as partially missing teeth on the respective outer peripheral surfaces mesh with the small-diameter gear portion 91b of the two-stage gear 91. For this reason, the rotational force of the two-stage gear 91 can be directly transmitted to the cylinder 96 through the meshing of the tooth portions 96a. For example, even if the engagement friction surface between the gear 95 and the cylinder 96 is slippery due to adhesion of oil or the like, or the load is large due to ink sticking to the sliding portion, the friction friction surface slips. Therefore, the cylinder 96 can be reliably rotated. Further, the rotational force of the two-stage gear 91 is directly transmitted to the cylindrical cam 94 through the meshing of the small-diameter gear portion 91b and the tooth portion 94a. Therefore, the channel valve 76 can be reliably operated as an on-off valve when necessary.

  By the way, it is assumed that the user has removed the cartridge 30 at a time point after the printing is finished and before the flow path valve 76 is closed. In this case, the cylindrical cam 94 is in the state of FIG. 7B when the valve is opened. However, when the cartridge 30 is removed, the valve opening / closing lever 53 is rotated from the retracted position to the protruding position by the biasing force of the torsion coil spring 58. To do. As a result, the action arm 87 pushes in the second support lever 68, and the swing lever body 65 is returned from the open position to the closed position. At this time, the lock lever 98 is in the locked position, but the arcuate curved surface 67b formed at the tip of the first support lever 67 can pass through the stopper portion 98a while pushing down the stopper portion 98a. It can move to the closed position without being obstructed by the lock lever 98.

  In addition, a configuration that can detect that the cartridge 30 is loaded can be employed. A sensor for detecting that the valve opening / closing lever 53 has moved from the protruding position to the retracted position is provided. When the sensor detects the loading of the cartridge 30, the control unit drives and controls the electric motor 37 based on the detection signal, thereby opening and closing the valve. The device 50 is operated to open the flow path valve 76. For example, assume that the user repeatedly inserts and removes the cartridge 30 into and from the holder 20. In this case, the flow path valve 76 is opened by the electric motor 37 when the cartridge 30 is inserted, and the flow path valve 76 is closed by the electric motor 37 when the cartridge 30 is removed. When the insertion / removal of the cartridge 30 is repeated, a deviation occurs between the actual insertion / removal operation and the opening / closing timing of the flow path valve 76. When the cartridge 30 is removed, the flow path valve 76 is open in the middle of the valve closing. It was possible. In this case, there was a high possibility of ink leaking from the supply needle.

  However, according to the present embodiment, when the cartridge 30 is removed from the holder 20, the valve opening / closing lever 53 biased by the torsion coil spring 58 instantaneously rotates from the protruding position to the retracted position. As a result, the action arm 87 instantaneously pushes the contact portion 68b, and the swing lever body 65 instantly rotates from the open position to the closed position. Therefore, even if there is a time lag when the flow path valve 76 is closed by the power from the electric motor 37 that has started driving after the removal of the cartridge 30 is detected, the spring biasing force by the first lock mechanism 54 is used. With the mechanical forced valve closing function, the flow path valve 76 can be closed without delaying the operation of inserting and removing the cartridge 30. Therefore, even if the cartridge 30 is repeatedly inserted and removed, a situation where ink leaks from the supply needle 23 can be avoided.

  Further, it is assumed that the user carries the printer 10 loaded with the cartridge 30 by a vehicle, for example. In this case, vibrations and drop impacts are repeatedly applied to the printer 10 being transported. Due to such repeated impacts and the like, the gears constituting the power transmission mechanism 52 may rotate little by little. This is because although the power transmission mechanism 52 is operatively connected to the electric motor 37 on the upstream side in the power transmission direction, it only suppresses the rotation of the gears and the like when this kind of repeated impact is applied to the electric motor 37. This is because the braking force does not work.

  According to the valve opening / closing device 50 of the present embodiment, the gears and the like are rotated little by little by applying this kind of repeated impact, but the gears and the like are rotated and the cylindrical cam 94 is rotated. However, when the convex portion 103a starts to engage with the lock lever 98, the convex portion 103a receives a pushing back force due to the biasing force of the torsion coil spring 99 from the lock lever 98, and this load suppresses further rotation of the gear or the like. And the further rotation of the cylindrical cam 94 is restricted at a timing before reaching the rotation position at which the closed position is switched to the open position. As a result, even when an impact or the like is repeatedly applied to the printer 10 during transportation, the lock at the closed position of the first support lever 67 is not released, so that the passage valve 76 is prevented from opening. Therefore, even if the printer 10 is transported with the cartridge 30 loaded, the flow path valve 76 is not opened.

  Therefore, in the printer 10 being transported, the loaded state of the cartridge 30 is poor. For example, although the valve opening / closing lever 53 is pushed in and the first lock mechanism 54 is unlocked, the ink is interposed between the supply needle 23 and the support port 33. Even in a halfway state where there is a slight gap that may cause leakage, it is possible to reliably avoid ink leakage from the gap.

As mentioned above, according to this embodiment mentioned above, there exist the following effects.
(1) The second lock mechanism 57 is provided, and the lock lever 98 is urged in the direction to be locked to the first support lever 67 by the urging force of the torsion coil spring 99, and the first support lever 67 is locked by the lock lever 98. Is configured to be locked in the closed position when the magnet body 55 is in the closed position. And when the convex part 103a of the cylindrical cam 94 which operates the lock lever 98 engages with the lock lever 98, the pushing back reaction force by the urging | biasing force of the torsion coil spring 99 was added to the convex part 103a as a load. As a result, even when the printer 10 is transported, the printer 10 receives repeated impacts such as vibrations and drop impacts due to the shaking of the vehicle, and the gears and the like that are components of the power transmission mechanism 52 may rotate. Further, it is possible to prevent the lock lever 98 from being rotated to the locking release position by the pushing-back reaction force received when the convex portion 103a is engaged with the lock lever 98. Therefore, it is possible to avoid a situation in which the flow path valve 76 is opened due to repeated impacts and the like received during transportation of the printer 10 and the like. For example, when the first lock mechanism 54 is unlocked, such as when the cartridge 30 is detached due to an impact during transportation and becomes halfway, or when the printer 10 is originally transported while the cartridge 30 is halfway, Even when 10 is transported, the first support lever 67 is held in the closed position. For this reason, even if the printer 10 is transported in such a halfway state of the cartridge 30, leakage of ink from the supply needle 23 of the holder 20 can be avoided.

  (2) Since the lock lever 98 locks the first support lever 67 in the closed position, the location where the first cam portion 102 of the cylindrical cam 94 faces the first support lever 67 is temporarily removed from the first cam region 102a. Even after shifting to the second cam region 102b, the first support lever 67 can be held in the closed position until the lock lever 98 moves to the unlocking position. That is, until the electric motor 37 is driven in reverse to move the lock lever 98 to the locking release position and the second lock mechanism 57 is unlocked, the first support lever 67 does not transmit power to the cylindrical cam 94. It is held in the closed position in the blocked state. Therefore, the flow path valve 76 can be maintained in a closed state. Therefore, the flow path valve 76 can be opened only when the flow path valve 76 needs to be opened.

  (3) When the cartridge 30 is loaded, the valve opening / closing lever 53 is pushed in and the lock by the first lock mechanism 54 is released, but this only removes the restriction on the opening / closing operation of the flow path valve 76 by the electric motor 37. The flow path valve 76 is not opened until the electric motor 37 is actually driven. Therefore, even if the insertion / removal operation of the cartridge 30 is repeated, the valve opening / closing lever 53 is rotated to unlock the first locking mechanism, but the electric motor 37 is not driven, so that the ink from the supply needle 23 of the holder 20 is not driven. Leakage can be avoided.

  (4) Even when a sensor that detects the loading of the cartridge 30 is provided and the control unit drives the electric motor 37 when the loading of the cartridge 30 is detected, the flow path valve 76 is opened. When the operation of inserting and removing the cartridge 30 is repeated, leakage of ink from the supply needle 23 of the holder 20 can be avoided. That is, when the insertion / removal operation of the cartridge 30 is repeated, the forward / reverse driving of the electric motor 37 is controlled based on the detection signal of the sensor. At this time, until the lock lever 98 moves to the unlocking position. The cylindrical cam 94 is not rotated, and the flow path valve 76 maintains the closed state. Further, if the cartridge 30 is inserted and removed when the flow path valve 76 is in an open state, for example, immediately after the end of printing, the valve opening / closing lever 53 is rotated by the biasing force of the torsion coil spring 58 during the removal operation. By returning, the flow path valve 76 is instantaneously closed. Accordingly, even in such a case, leakage of ink from the supply needle 23 of the holder 20 can be avoided.

  (5) The swing lever body 65 constituting the moving mechanism has a first support lever 67 and a second support lever 68, and the valve opening / closing lever 53 of the first lock mechanism 54 is engaged with the second support lever 68. The lock lever 98 of the second lock mechanism 57 is configured to be engaged with the first support lever. Therefore, if one of the first lock mechanism 54 and the second lock mechanism 57 is locked, the flow path valve 76 can be maintained in the closed state even when the other lock is released. Therefore, the flow path valve 76 can be opened only when the cartridge 30 is loaded and the electric motor 37 is driven.

  (6) An arcuate curved surface 67b is provided at the tip of the first support lever 67, and the first support lever 67 is not locked by the lock lever 98 in the process of moving from the open position to the closed position, and its movement is allowed. The first support lever 67 is engaged with the lock lever 98 when the first support lever 67 moves to the closed position. For this reason, for example, even if the cartridge 30 is pulled out with the magnet body 55 in the open position, the swing lever body 65 is moved by pushing the operating arm 87 into the contact portion 68b by the rotation return of the valve opening / closing lever 53. Can be moved to the closed position. Therefore, when the cartridge 30 is withdrawn when the flow path valve 76 is open, ink leakage from the supply needle 23 of the holder 20 can be avoided.

  (7) Since the second cam portion 103 is added in addition to the first cam portion 102 to the cylindrical cam 94 that is the cam body that operates the first support lever 67, the second lock mechanism 57 that operates the lock lever 98 is provided. The configuration of the power transmission mechanism 52 does not become complicated even though it is provided.

  (8) The lock lever 98 is operated by the power from the power transmission mechanism 52. Therefore, it is not necessary to separately add a power transmission mechanism, a rotational drive source, and the like, and the configuration of the valve opening / closing device 50 is not complicated.

  (9) A swing lever body 65 having a first support lever 67 and a second support lever 68 for supporting the pair of support arm portions 62 of the magnet body 55 is provided, and the first support lever 67 is a first cam of the cylindrical cam 94. While being engaged with the portion 102, the abutment portion 68 b of the second support lever 68 is configured to be engaged with the valve opening / closing lever 53. As described above, the swing lever body 65 has the support function of the magnet body 55, the motion conversion function, and the locked function as a single component, so that the valve opening and closing device 50 can have a relatively simple configuration. .

(10) According to the printer 10 including the valve opening / closing device 50, the effects described in the above (1) to (9) can be similarly obtained.
In addition, embodiment of invention is not limited to the said embodiment, You may change as follows.

  (Modification 1) Although the valve opening / closing lever 53 is provided in the embodiment, the valve opening / closing lever 53 is not essential. For example, the valve opening / closing lever 53 may be eliminated. Even in such a configuration in which the first lock mechanism 54 is abolished, the power transmission mechanism of the valve opening / closing device 50 is configured by the second lock mechanism 57 having the lock lever 98 due to vibration or drop impact during the conveyance of the printer. It is possible to prevent the flow path valve 76 from being opened due to the rotation of the gears that rotate. In particular, when the valve opening / closing lever 53 is not provided, even when the cartridge 30 is not loaded and the printer 10 is transported, if the flow path valve 76 is opened, there is a concern about ink leakage. This type of ink leakage can be prevented by using the valve opening / closing device provided.

  (Modification 2) It is not limited to the moving mechanism that moves the magnet body 55 in the direction perpendicular to the magnetic force acting surface 78. For example, as described in Patent Document 1, a swing mechanism that swings the magnet body in a plane parallel to the magnetic force acting surface may be employed. Regardless of the moving mechanism in which the moving direction of the magnet is, by providing the second lock mechanism 57, it is possible to prevent the flow path valve 76 from being opened when the printer is transported.

  (Modification 3) In the above-described embodiment, the movement of the swing lever body, which is a movement mechanism, is restricted (locked), but the object of locking by the second lock mechanism is not limited to the movement mechanism. Another mechanism or component located downstream of the moving mechanism in the power transmission direction may be used. For example, the second lock mechanism may be configured to directly lock the operating body. For example, a lock lever that is operated by a cam that constitutes a power transmission mechanism is locked to a magnet body in a closed position. Even if it is such a structure, the effect similar to the said embodiment can be acquired.

  (Modification 4) For example, the lock lever 98 that locks the swing lever body 65 in the closed position is provided, but a load (push-back reaction force) that can prevent the swing lever body 65 from moving from the closed position to the open position. It is possible to have a configuration that only gives For example, the lock lever 98 is disposed at a position where it cannot be engaged with the first support lever. In this case, the lock lever does not have a lock function and thus becomes a simple lever. However, when repeated impact such as vibration during transportation or drop impact is applied, the convex portion 103a of the cylindrical cam 94 is pushed back when it hits the lever. Since further rotation of the cylindrical cam 94 can be suppressed by receiving resistance, a position where the rotation is suppressed is set to a position before opening the valve. According to such a configuration, even if this kind of repeated impact is applied, the flow path valve 76 does not open, so that liquid leakage from the supply needle 23 of the holder 20 can be avoided. Note that the load may be applied at any timing as long as it is in the middle from the closed position to the open position.

(Modification 5) The operating body is not limited to a magnet body. For example, the operation body may be an operation lever, and the flow path valve may be mechanically opened and closed.
(Modification 6) In the above-described embodiment, the liquid container is filled with liquid from the beginning of use, and is an ink cartridge that supplies liquid to the liquid ejecting apparatus as a loading destination. However, the present invention is not limited to this. For example, the liquid container may be used for the purpose of collecting the liquid from the liquid ejecting apparatus as the loading destination, since the liquid is not stored at the beginning of use. For example, the liquid to be recovered includes ink waste liquid, and a cartridge dedicated to waste liquid recovery can also be employed. Of course, the liquid to be collected is not limited to the waste liquid, and when the liquid is circulated, it may be a liquid container that collects the usable liquid. Even when this type of liquid container is used, the function of closing the flow path valve by the valve opening / closing device can prevent liquid leakage from the connected components of the liquid to be collected. In addition, also when supplying a liquid to a liquid ejecting apparatus, the supply destination which a liquid container supplies to a liquid ejecting apparatus is not limited to a liquid ejecting head. For example, a liquid container that supplies a cleaning liquid or a lubricating liquid to the liquid ejecting apparatus is also included.

  (Modification 7) In the above-described embodiment, the liquid ejecting apparatus provided with the valve opening / closing device is embodied in the ink jet printer 10. However, the present invention is not limited to this, and liquid other than ink (the particles of the functional material are dispersed). It is also possible to embody the invention in a liquid ejecting apparatus that ejects a liquid material). For example, for manufacturing liquid chips and biochips for spraying liquid materials containing dispersed or dissolved materials such as electrode materials and color materials used in the manufacture of liquid crystal displays, EL (electroluminescence) displays, and surface-emitting displays. It may be a liquid ejecting apparatus that ejects a biological organic material to be used, or a liquid ejecting apparatus that ejects a liquid as a sample that is used as a precision pipette. The valve opening / closing device can be applied to any one of these liquid ejecting apparatuses.

Hereinafter, the technical idea grasped | ascertained from the said embodiment and each modification is described.
(1) In the valve opening / closing apparatus according to any one of claims 4 to 8, when the liquid container is not connected to the connected component, the operating body is used as the moving mechanism or the operating body when not loaded. The lock includes a first lock means for locking the liquid valve in a closed position for closing the flow path valve and releasing the lock when the liquid container is connected to the connected component. Means is provided as the second locking means.

  (2) In the valve opening / closing apparatus according to any one of claims 1 to 14, the power transmission mechanism includes a clutch means (93). According to this, since the power transmission mechanism includes the clutch means, even when the rotational drive source is also used as another device and the power is transmitted and inputted, the cam body rotates at the end point in the rotation direction. If the movement is restricted, the clutch means is disconnected and the cam body located downstream in the power transmission direction does not move any further. For this reason, the cam body is not excessively loaded, and the rotation drive source can be shared with other devices (for example, a medium transport device) provided in the liquid ejecting apparatus.

  (3) In the valve opening / closing apparatus according to any one of claims 3, 10 to 14, and the technical idea (2), the power transmission mechanism includes a clutch unit, and the power transmission direction downstream of the clutch unit The cam body is provided at the position, and the cam body is configured to be capable of reciprocating rotation within a finite range.

  According to this, since the cam body is configured to reciprocately rotate in a finite range, even if the rotation drive source is shared with other devices, the rotation is restricted at the end point in one direction of the finite range. Even if is driven, the cam body is held in the restricting position that has reached one of both ends of the finite range. Therefore, even if the rotational drive source continues to be rotationally driven, the operating body can be held at the position when such a cam body is positioned at the end point of the finite range. Therefore, this valve opening / closing device can share the rotational drive source with other devices.

  (4) In the valve opening and closing device according to any one of claims 3, 10 to 14, and the technical ideas (2) and (3), the power transmission mechanism is located downstream of the clutch means in the power transmission direction. And a transmission delay means for delaying a power transmission start time between the rotating body constituting the clutch means and the cam body.

  According to this, since the power transmission timing is delayed by the transmission delay means, even if the rotation drive source is shared with the apparatus, even when the rotation direction of the rotation drive source is driven in the reverse direction on the other apparatus side. The power is not transmitted from the clutch means to the cam body during the delay time of the transmission delay means, so that the reverse drive of the rotational drive source for operating other devices is not hindered or predetermined even if such reverse drive is performed. If it is used in the range of rotation amount, the cam body will not rotate. Therefore, even when the rotation drive source is shared, the respective devices can be appropriately operated without causing interference with each other.

  (5) The liquid ejecting apparatus according to claim 16, further comprising transport means (36) for transporting a target from which the liquid is ejected from the liquid ejecting head, and a rotation drive source (37) for driving the transport means. The rotational drive source that sends power to the power transmission mechanism of the valve opening / closing device also serves as the rotational driving source for driving the conveying means, and the rotational rotation of the rotational driving source when the valve opening / closing device is closed The direction of rotation is opposite to the direction of rotation of the rotational drive source when the valve is opened, and the rotational drive direction in which the valve opening / closing device opens the flow path valve drives the conveying means. It is set to be the same as the drive rotation direction of the rotation drive source at the time. According to this, it becomes possible to operate the valve opening / closing device using a rotational drive source for driving the transport means, and the liquid ejecting process is executed to drive the transport means and to the liquid ejecting head. Since the flow path valve is opened when it is necessary to supply liquid, the flow path valve is appropriately opened and closed.

  DESCRIPTION OF SYMBOLS 10 ... Recording apparatus as a liquid ejecting apparatus, 12 ... Carriage, 16 ... Pump, 14 ... Recording head as a liquid ejecting head, 15 ... Storage part, 18 ... Supply flow path, 20 ... Constructing and supplying a liquid supply apparatus Cartridge holders as parts, 21, 22 ... positioning protrusions, 23 ... ink supply needles, 24 ... waste ink introduction needles, 28 ... handle levers, 30 ... ink cartridges as liquid containers, 36 ... paper supply / discharge mechanisms, 37 ... An electric motor as a rotational drive source, 50 ... a valve opening / closing device constituting a liquid supply device, 51 ... a housing, 51a ... an accommodating portion constituting a moving mechanism and a slide mechanism, 52 ... a power transmission mechanism, 53 ... a first locking means. Constructing valve opening / closing lever, 54 ... first locking mechanism as first locking means, 55 ... magnet body as operating body, 56 ... moving mechanism, 57 ... Second locking mechanism as load applying means, locking means and second locking means, 58... Torsion coil spring constituting first locking means, 59... Magnet, 60 .. yoke, 63... Guide groove constituting moving mechanism and slide mechanism , 65... Oscillating lever body constituting the moving mechanism and converting mechanism, 67... First supporting lever constituting the moving mechanism and converting mechanism, 67 b... Curved surface, 68. Valve part, 78 ... Magnetically acting surface, 81 ... Valve body, 90 ... Two-stage gear, 91 ... Two-stage gear, 92 ... Clutch cam mechanism, 93 ... Friction clutch gear mechanism, 94 ... Constructing conversion mechanism and transmission element and Cylindrical cam as cam body, 94a ... tooth portion, 94c ... arc groove, 95 ... gear, 96 ... cylindrical, 96a ... tooth portion, 96c ... projection, 97 ... coil spring, 98 ... load applying means, locking means and A lock lever as a locking member, 98a... Stopper portion, 98b... Projection, 99... A load applying means, a lock means and a second lock means, and a torsion coil spring as an urging means, 100 ... Cover member, 102 ... First cam part, 103 ... Second cam part, 103a ... Convex part constituting load applying means, locking means and second locking means, 104 ... projection.

Claims (8)

A valve opening and closing device for opening and closing a flow path valve built in a connected component to be connected when a liquid container is loaded in the liquid ejecting apparatus,
An operating body that is driven by power from a rotational drive source to open and close the flow path valve;
A moving mechanism for reciprocating the operating body between two positions capable of opening and closing the flow path valve;
When the liquid container is not connected to the connected component, the moving mechanism or the operating body is locked to a state where the operating body is disposed at a closed position where the operating valve closes the flow path valve. A first locking means for releasing the lock when the liquid container is connected to the connected component;
A power transmission mechanism for transmitting power from the rotational drive source to the moving mechanism;
Second locking means that is operated by power from the power transmission mechanism and locks the moving mechanism or the operating body in a state where the operating body is disposed at a closed position;
A valve opening and closing device comprising:   The valve opening and closing device according to claim 1,
  The second locking means allows the operation of the moving mechanism or the movement of the operating body when the operating body moves from the open position to the closed position, and the moving mechanism when the operating body moves to the closed position. Alternatively, a valve opening and closing device that locks the operating body.   In the valve opening and closing device according to claim 1 or 2,
  The cam body constituting the power transmission mechanism has a first cam portion and a second cam portion, the first cam portion is engaged with a cam follower of the moving mechanism, and the second cam portion is A valve opening and closing device engaged with a cam follower of the second locking means.   In the valve opening and closing device according to claim 3,
  The second lock means includes the cam body constituting the power transmission mechanism, a locking member having the cam follower engageable with the second cam portion of the cam body, and the locking member as the moving mechanism or A valve opening / closing device comprising: an urging means for urging in a locking direction capable of locking to the operating body.   In the valve opening and closing device according to claim 3 or 4,
  The moving mechanism includes a slide mechanism that slidably supports the operation body, and a conversion mechanism that converts rotation of the cam body constituting the power transmission mechanism into movement of the operation body on the slide mechanism. And
  The conversion mechanism includes at least two support levers that support the operation body at at least two locations, and one of the first support levers includes a first cam follower that can be engaged with the first cam portion, and the first support lever. A valve opening and closing device, wherein the valve opening and closing device is engaged with the first cam portion via a one cam follower, and the other second support lever is locked to the first lock means.   In the valve opening and closing device according to any one of claims 1 to 5,
  The operating body is a magnet body having a magnet capable of attracting a valve body constituting the flow path valve, and the moving mechanism opens the magnet body close to the flow path valve. A valve opening / closing device that reciprocates between a closed position that is spaced apart from the flow path valve and is closed.   A connected component to be connected when a liquid container is loaded in the liquid ejecting apparatus;
  The valve opening and closing device according to any one of claims 1 to 6,
  The liquid supply device, wherein the valve opening / closing device is attached in a state where the operation body is disposed at a position where the opening / closing operation of the flow path valve can be performed with respect to the connected component.   A container for containing the liquid container;
  A liquid supply device according to claim 7;
  A liquid ejecting head that ejects liquid supplied from the liquid container accommodated in the accommodating portion via the connected component;
A liquid ejecting apparatus comprising:

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