JP5206331B2 - Roll body support device, recording device - Google Patents

Description

  The present invention relates to a roll body support device that supports a roll body around which a recording medium is wound, and a recording apparatus represented by a printer or the like that includes the roll body support device.

  In a recording apparatus typified by a facsimile or a printer, roll paper may be used as a recording medium. There are various configurations of a roll paper body, that is, a holder (roll paper holder) for setting a roll body in which roll paper is wound in a recording apparatus. The recording apparatus described in Patent Document 1 has a configuration in which a roll body is set by fitting flange members to both ends of the roll body and supporting the flange members with a shaft body (support shaft portion).

More specifically, the support shaft portion that supports the flange member is provided on one side of the fixed holder and on the other side of the movable holder. When setting the roll body, the movable holder is moved away from the fixed holder, and the roll body is placed between the fixed holder and the movable holder. Thereafter, by moving the movable holder toward the fixed holder, the support shaft portion of the fixed holder and the support shaft portion of the movable holder are fitted into both ends of the roll body to support the roll body.
JP 2007-261754 A

  When the movable holder is moved toward the fixed holder at the time of setting, a gap is formed between the fixed holder and the movable holder and the roll body unless the movement is sufficiently performed. Due to this gap, the roll body may move in the direction of the rotation axis when the roll paper is supplied, which may reduce the recording quality.

  Therefore, the present invention has been made in view of such problems, and the object thereof is to eliminate or reduce the gap between the roll body and the fixed holder and the movable holder that supports the roll body, thereby rotating the roll body. The object is to prevent the recording quality from deteriorating with time.

  In order to solve the above problems, a first aspect of the present invention includes a first shaft that fits into a shaft hole at one end of a roll body on which a recording medium is wound, and the roll body The roll body comprising: a first holder that is movable in the direction of the rotation axis thereof; and a second holder that includes a second shaft that fits into a shaft hole at the other end of the roll body. The first holder includes a lock unit that locks the position of the first holder, and the lock unit extends along the moving direction of the first holder. An engagement portion that can be engaged and disengaged with respect to a portion, an operation portion for performing a switching operation of engagement and disengagement of the engagement portion with respect to the engaged portion, the operation portion, A state where the engagement portion is disengaged between the engaged portion and the engaged portion. When the operating portion is operated in a direction in which the engaging portion engages with the engaged portion, the first holder is moved to the second position after engaging the engaging portion with the engaged portion. It is characterized by comprising a holder moving means for moving a predetermined amount in the direction approaching the holder.

  According to this aspect, when the first holder is moved to the second holder side by a predetermined amount when the first holder is locked by operating the operation unit by the holder moving means, the roll body, The gap between the first holder and the second holder that supports this can be eliminated or reduced, thereby preventing the roll body from moving in the direction of the rotation axis during rotation of the roll body or reducing its movement. Can be made.

  A second aspect of the present invention includes a first shaft that fits into a shaft hole at one end of a roll body on which a recording medium is wound, and is movable in the direction of the rotation axis of the roll body. A roll body support device for supporting the roll body, comprising: a first holder; and a second holder provided with a second shaft that fits into a shaft hole at the other end of the roll body. The first holder includes locking means for locking the position of the first holder, and the locking means is engaged and disengaged with respect to the engaged portion extending along the moving direction of the first holder. And an engaging portion that is displaceable by a predetermined amount in the moving direction of the first holder, and an engaging portion urging means that urges the engaging portion in a direction away from the second holder. Switching operation between engagement and disengagement of the engagement portion with respect to the engaged portion. The operation unit is interposed between the operation unit and the engagement unit, and the engagement unit is disengaged from the engaged unit. An engaging portion displacing means for engaging the engaged portion after displacing the engaging portion by a predetermined amount toward the second holder when the portion is operated in a direction to engage the engaged portion; It is characterized by comprising.

  According to this aspect, when the operating portion is operated to lock the first holder by the engaging portion displacing means, the engaging portion is displaced by a predetermined amount toward the second holder, and then the engaging portion is engaged. Match. Here, since the engaging portion is urged in the first holder in the direction away from the second holder by the engaging portion urging means, the engaging portion is displaced to the second holder side by a predetermined amount in the first holder. When engaged with the engaged portion, the urging force of the engaging portion urging means acts to urge the first holder toward the second holder.

  Accordingly, the gap between the roll body and the first holder and the second holder that supports the roll body can be eliminated or reduced, and thereby the roll body can move in the rotation axis direction when the roll body rotates. It can be prevented or its movement can be reduced. Further, even if the operating portion is operated in the engaging direction in a state where there is no gap between the roll body and the first holder and the second holder that support the roll body, the urging force of the engaging portion urging means is not increased. Since it acts on the roll body, the roll body is pressed toward the second holder. Therefore, it is possible to prevent a gap from occurring after the roll body and the first holder and the second holder.

  According to a third aspect of the present invention, in the second aspect, the engaging portion is configured to engage the engaging portion with the engaged portion by swinging about a swing shaft, and Provided in a lever member that switches the posture to be separated from the engaging portion, the engaging portion displacing means is provided so as to be engageable with both the operation portion and the lever member, and the engaging portion is in the engaged state The lever member is moved to the second holder side by a predetermined amount when the operation portion is operated in a direction in which the engagement portion engages with the engaged portion in a state in which the engagement with the portion is released. A cam member and lever member urging means for urging the lever member in a direction in which the engaging portion engages with the engaged portion are characterized by being configured.

  According to this aspect, the engaging portion displacing means biases the lever member that urges the lever member including the engaging member and the cam member that can be engaged with both the operation portion and the lever member. Therefore, the engagement portion displacing means can be simplified in structure and can be configured at low cost.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the engaged portion is configured by ratchet teeth provided in a plurality at predetermined intervals along the moving direction of the first holder. The engaging portion includes an engaging claw that engages with the ratchet tooth, and the ratchet tooth has a shape that regulates movement of the first holder in a direction away from the second holder. It is characterized by that.

  According to this aspect, the engaged portion is configured by ratchet teeth, and the tooth profile has a shape that restricts the movement of the first holder in the direction away from the second holder, so the roll body is set. After that, the first holder moves in a direction away from the second holder, and no gap is generated between the roll body and the first holder and the second holder.

  According to a fifth aspect of the present invention, there is provided a recording apparatus comprising: a recording unit that performs recording on a recording medium; and the roll body support device according to any one of the first to fourth aspects. According to this aspect, in the recording apparatus, it is possible to obtain the same functions and effects as those of the first to fourth aspects.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are external perspective views of an ink jet printer (hereinafter referred to as “printer”) 1 as an embodiment of a “recording apparatus” according to the present invention, and FIG. 3 is a side view of the main part. 4 and 5 are perspective views of the lock mechanism 40, FIGS. 6 to 8 are plan views (transition transition diagrams) of the lock mechanism 40, and FIGS. 9 to 12 are partial enlarged plan views (transition transition diagrams) of the lock mechanism 40. FIG. 13 to 15 are side views (motion transition diagrams) of the operation lever 41. FIG.

<< Overall Configuration of Printer 1 >>
First, the configuration of the printer 1 will be outlined with reference to FIGS. The printer 1 is a large-sized printer capable of recording up to a roll paper P as a recording medium having a large size width, such as a JIS standard A0 size or B0 size, and includes a roll paper supply unit 3 and a recording execution unit 4. The main body portion 2 and the main body support portion 5 are provided.

  The main body 2 is provided on an upper portion of a main body support 5 including a base 9 and a column 8 erected on the base 9, and a discharge port for discharging the recorded roll paper P obliquely downward. 6. A stacker (not shown) is positioned below the discharge port 6, and the recorded roll paper P is discharged downward from the discharge port 6 and received by the stacker.

  The roll paper supply unit 3 is configured so that a roll body (hereinafter referred to as “roll”) R formed by winding the roll paper P can be set inside an openable / closable cover 18. The rolled paper P is supplied obliquely downward to the recording execution unit 4 that executes recording.

  1 and 3, reference numeral 20 (19) denotes a flange attached to the end of the roll body R, and the roll body R is supported by the roll paper supply unit 3 through this flange. When the roll paper is supplied, the roll body R is rotationally driven by a drive mechanism (described later) provided in the roll paper supply unit 3 so that the roll paper P is unwound from the roll body R, and the unrolled roll paper P is used as a guide member. 10 is supplied to the downstream side while being guided by 10.

  The recording execution unit (recording unit) 4 is provided on the upstream side of the recording head 13, a recording head 13 serving as a recording unit that discharges ink to the roll paper P, a guide member 11 that is disposed opposite to the recording head 13, and the recording head 13. And a conveyance drive roller 15 and a conveyance driven roller 16 for conveying the roll paper P to the downstream side.

  The conveyance drive roller 15 is rotationally driven by a motor (not shown), and the conveyance driven roller 16 is provided so as to be driven and rotated while pressing the roll paper P toward the conveyance drive roller 15, and the roll paper P is moved downstream by these rollers. And precision fed.

  The recording head 13 that performs recording by ejecting ink onto the roll paper P is provided on the carriage 12, and the carriage 12 extends in the scanning direction of the recording head 13 (main scanning direction: the front and back direction in FIG. 3). While being guided by 14, it receives power from a motor (not shown) and moves in the main scanning direction.

  A paper suction unit (not shown) is provided on the downstream side of the recording head 13, and the paper suction unit places the roll paper P in a regulated state so as not to float on the downstream side of the recording head 13. Deterioration of recording quality due to the floating of P is prevented.

<< Overall Configuration of Roll Paper Supply Unit 3 >>
Next, the overall configuration of the roll paper supply unit 3 will be described. As shown in FIG. 2, the roll paper supply unit 3 includes a movable side holder 30 as a “first holder”, a fixed side holder 26 as a “second holder”, and a temporary placement unit 21 for temporarily placing the roll body R. And.

  The temporary placement portion 21 is a place where the roll body R is temporarily placed before being set in the fixed side holder 26 and the movable side holder 30. That is, as described above, the printer 1 is a large-sized printer capable of recording up to a roll paper P having a large width such as A0 size or B0 size of JIS standard, and the roll body R may be extremely heavy. .

  Therefore, by providing the temporary placement portion 21 on the near side from the positions of the fixed side holder 26 and the movable side holder 30, the position where the roll body R is supported by the fixed side holder 26 and the movable side holder 30 from a low position such as the floor, That is, it is not necessary to move directly to the back side of the apparatus, and the burden during the roll body R setting work can be reduced.

  In the roll body R, a fixed side flange 20 is mounted on the fixed side holder 26 side, and a movable side flange 19 is mounted on the movable side holder 30 side. A positioning guide 22 is provided on the fixed-side flange 20 side in the temporary placement portion 21, and by bringing the fixed-side flange 20 into contact with the positioning guide 22, that is, by right-aligning the roll body R, the roll body The reference position (position in the direction of the rotation axis) of the roll body R when moving R from the temporary placement portion 21 to the settable position is determined.

  The “settable position” of the roll body R means that the movable flange 19 is supported on the flange support surface 36 a of the movable holder 30 and the fixed flange 20 is supported on the flange support surface 29 of the fixed holder 26. The position of the roll body R at the time is said. And from the said temporary placement part 21 to the settable position, it moves by rolling the roll body R toward the apparatus back | inner side. Accordingly, the roll body R can be easily moved to the settable position without lifting the heavy roll body R.

  Next, as shown in FIG. 4, the movable holder 30 includes a holder base 36, a driven shaft 31, a handle 32, an operation lever 41, and a lock mechanism 40. The movable side holder 30 is slidably movable in the longitudinal direction (rotational axis direction) of the roll body R while being guided by a guide rail 34 extending in the rotational axis direction of the roll body R, and is locked as a locking means described later. The position of the mechanism 40 can be locked.

  The handle 32 is for gripping when the movable holder 30 is moved, and the operation lever 41 constitutes an operation section for locking and unlocking the position of the movable holder 30. The driven shaft 31 is provided so as to be freely rotatable, and is supported by the movable flange 19 by being fitted into a shaft hole (not shown) formed in the movable flange 19.

  Next, the fixed side holder 26 includes the fixed side flange receiving member 29, the drive shaft 27, and the drive motor 28. Unlike the movable side holder 30, the fixed side holder 26 is provided in a fixed state. The drive shaft 27 is rotationally driven by a drive motor 28 and is fitted into a shaft hole (not shown) formed in the fixed side flange 20 to give rotational power to the fixed side flange 20 (that is, the roll body R).

  In the above configuration, when the roll body R can be set, the driven shaft 31 is disengaged from the shaft hole of the movable flange 19 and the drive shaft 27 is disengaged from the shaft hole of the fixed flange 20. Then, when the movable side holder 30 is moved to the fixed side holder 26 side from this state, the driven shaft 31 eventually fits into the shaft hole of the movable side flange 19 and the drive shaft 27 fits into the shaft hole of the fixed side flange 20. The roll body R is in a set state.

<< Configuration and Operation of Locking Mechanism 40 >>
Next, the lock mechanism 40 that fixes the position of the movable holder 30 will be described in detail with reference to FIGS. 4 to 15. 4 and 5 illustrate a state in which the outer case on which the handle 32 is formed is removed, and the lock mechanism 40 is actually provided inside the outer case.

  In the following, for convenience of explanation, the moving direction of each constituent member is represented by a coordinate system shown in FIGS. Here, the x direction is the moving direction of the movable side holder 30 (the rotational axis direction of the roll body R), the [x +] direction is the direction close to the fixed side holder 26, and the [x−] direction is away from the fixed side holder 26. Direction. The y direction and the z direction are directions orthogonal to the x direction.

  The lock mechanism 40 is connected to a holder base 36 that forms a base of the movable holder 30 and forms a flange support surface 36a. The lock mechanism 40 has a base frame 42 that is substantially L-shaped when viewed from the front, and stands on the base frame 42. A base body is constituted by a frame 48 that is provided and is connected to the holder base 36 and has a substantially U-shape in plan view.

  A plurality of ratchet teeth 35 as “engaged portions” are provided on the guide rail 34 that guides the movable side holder 30 in the x direction, and two as “engagement portions” provided on the movable side holder 30. The engaging claw 45a meshes with the ratchet teeth 35, so that the position of the movable side holder 30 is fixed (locked).

  The engaging claw 45a is formed on the lever member 45, and the lever member 45 is provided so as to be swingable in the base frame 42 and to be displaceable by a predetermined amount in the x direction. By swinging, the posture for engaging the engaging claw 45a with the ratchet teeth 35 and the posture for separating the engaging claw 45a from the ratchet teeth 35 are switched.

  More specifically, the lever member 45 is formed with a roller 45b, a spring locking portion 45c, and a pressed portion 45d, and the roller 45b and the pressed portion 45d from the guide groove 42a formed in the base frame 42, In addition, spring locking portions 45c are provided so as to protrude upward from below the base frame 42 from the guide grooves 42b.

  The roller 45b is provided on a swing shaft 45e (which forms the swing center of the lever member 45) so as to be freely rotatable, and the lever member 45b swings about the roller 45b. A tension spring 46 as a “lever member urging means” that exerts an urging force with the base frame 42 is latched with the spring locking portion 45c. The engaging claw 45a is biased in the direction in which it engages with the ratchet teeth 35.

  The guide grooves 42a and 42b formed in the base frame 42 extend in the x direction so that the lever member 45 can be displaced by a predetermined amount in the x direction. In the lever member 45, the swing shaft 45e is “engaged”. The urging force of the coil spring 47 as “part urging means” acts, and the lever member 45 is always urged in the [x−] direction by this urging force. As will be described in detail later, the bias in the [x−] direction with respect to the lever member 45 is applied to the entire movable side holder 30 in the [x +] direction when the engaging claw 45a is engaged with the ratchet teeth 35. It acts as a force.

Next, the swinging operation of the lever member 45 and the displacement operation in the x direction (more specifically, the [x +] direction) are performed by a cam block 43 as a “cam member” provided so as to be slidable in the y direction. .
More specifically, the frame 48 is provided with a guide rail 44 having a U-shaped cross section and extending in the y direction. The side of the cam block 43 on the [x−] direction side is provided on the guide rail 44. By entering, the cam block 43 is guided in the y direction. Incidentally, rollers 43d and 43d that can freely rotate are provided on the surface of the cam block 43 that contacts the guide rail 44, and a smooth sliding operation is secured by the rollers 43d and 43d.

  The displacement operation of the cam block 43 in the y direction is performed by the operation lever 41. The operation lever 41 is provided on a flange 36b formed on the holder base 36 so as to be rotatable about a rotation shaft 41a as shown in FIGS. A guide groove 41b is formed at a position away from the rotation shaft 41a so as to extend in the rotation radius direction of the operation lever 41.

  On the other hand, the cam block 43 is provided with a boss 43e (not shown in FIGS. 4 to 11). The boss 43e is provided semi-fixed to the cam block 43 so as not to move in the y direction in the cam block 43 but to move a predetermined amount in the z direction.

  On the other hand, a guide groove 36c having a substantially L-shape when viewed from the front is formed on the side surface of the flange portion 36b. The boss 43e provided on the cam block 43 is loosely inserted into the guide groove 36c and loosely inserted into the guide groove 41b formed on the operation lever 41.

  Therefore, when the operation lever 41 is rotated, the guide groove 41b formed in the operation lever 41 pushes the boss 43e in the y direction, and thereby the boss 43e, that is, the cam block 43 slides in the y direction. . The cam block 43 is always urged in the [y +] direction by a guide block urging means (not shown).

  Here, FIG. 13 shows a state when the lock is released (the movable side holder 30 is movable in the x direction). In this state, the boss 43e provided on the cam block 43 moves slightly upward (z + direction), enters the upper portion of the guide groove 36c, and is restricted from moving in the y direction. Thereby, even if the hand is released from the operation lever 41, the cam block 43 is prevented from moving by the urging force of the guide block urging means.

  If the operation lever 41 is operated in a direction that rises a predetermined amount from the state shown in FIG. 13, the boss 43e moves in the [z-] direction and is allowed to move in the y direction. By the biasing force of the biasing means, it is possible to operate the operation lever 41 in the locking direction (counterclockwise direction in FIGS. 13 to 15) with a light operating force.

  Next, the relationship between the cam block 43 and the lever member 45 will be described in detail. The cam block 43 has a hollow inside, and a roller 45 b provided on the lever member 45 is loosely inserted therein. More specifically, a cam surface 43 a is formed inside the cam block 43 so as to form a convex shape along the y direction. The cam surface 43 e and a roller 45 b provided on the lever member 45 are provided. The roller 45b travels on the cam surface 43e.

  Hereinafter, based on the change from the unlocked state to the locked state, the relationship between the cam block 43 and the lever member 45 will be further described with reference to FIGS. 9 to 12 are drawn mainly to show the positional relationship between the lever member 45 and the ratchet teeth 35, and the inner peripheral surface (cam surface 43a, etc.) of the cam block 43 is shown in FIG. The guide grooves 42a and 42b formed in the base frame 42 are respectively drawn with broken lines by dotted lines.

  6 and 9 show the unlocked state (the operation lever 41 is in the state shown in FIG. 13). In this state, the cam block 43 is positioned most in the [y−] direction, and the inner lever pressing surface 43b presses the pressed portion 45d of the lever member 45 in the [y−] direction. As a result, the lever member 45 swings counterclockwise around the roller 45b, and the engaging claw 45a is separated from the ratchet teeth 35. That is, the lock is released.

  When the operation lever 41 is operated in the direction in which the operation lever 41 is raised from this unlocked state, the cam block 43 moves in the [y +] direction. For this reason, the state in which the lever pressing surface 43b of the cam block 43 presses the pressed portion 45d of the lever member 45 in the [y-] direction is released, and the lever member 45 receives the urging force of the tension spring 46 and rotates clockwise in FIG. Swing in the direction. As a result, the engaging claws 45 a mesh with the ratchet teeth 35.

  Here, when the engaging claw 45a meshes with the ratchet teeth 35, the lever member 45 is displaced in the [x +] direction by a predetermined amount by the convex shape of the cam surface 43a, so that the engaging claw 45a is displaced in the [x +] direction. Meshes with ratchet teeth 35.

  That is, from the state shown in FIGS. 6 and 9, if the lever member 45 is simply swung without being displaced in the [x +] direction, the two engaging claws 45a provided on the lever member 45 are shown in FIG. The ratchet teeth 35 at the position indicated by reference numeral x1 are sandwiched.

  However, since the lever member 45 is displaced in the [x +] direction by the cam surface 43a, the two engaging claws 45a also move in the [x +] direction as shown in FIGS. When the cam block 43 further moves in the [y +] direction from the state shown in FIGS. 7 and 10, the lever member 45 tends to move in the [x−] direction which is the original direction by the action of the cam surface 43a.

  However, at this time, the engaging claws 45a are biased by the tension springs 46 in the direction of meshing with the ratchet teeth 35. As a result, the two engaging claws 45a are not the ratchet teeth 35 at the position indicated by the reference numeral x1, but FIG. As shown, the ratchet teeth 35 located in the [x +] direction are sandwiched therebetween.

  In the state shown in FIG. 11, since the lever member 45 is displaced in the [x +] direction, the spring locking portion 45c is relatively movable in the [x−] direction inside the guide groove 42b. Yes. Similarly, the roller 45b is also relatively movable in the [x-] direction inside the guide groove 42a.

  Accordingly, when the cam block 43 further moves in the [y +] direction from the state shown in FIG. 11, the lever member 45 can move in the [x−] direction in relation to the base frame 42 by the action of the cam surface 43a. Since the engaging claw 45a has already sandwiched the ratchet teeth 35, the lever member 45 cannot move further in the [x-] direction from the state shown in FIG.

  As a result, the biasing force of the coil spring 47 that biases the lever member 45 in the [x−] direction acts between the lever member 45 and the base frame 42, that is, the biasing force of the coil spring 47 is movable side holder 30. It works to move the whole in the [x +] direction. Accordingly, when the cam block 43 further moves in the [y +] direction from the state shown in FIG. 11, the entire movable side holder 30 moves in the [x +] direction. In other words, the entire movable side holder 30 moves in the [x +] direction by the biasing force of the coil spring 47 with the lever member 45 as a foothold. Finally, the locked state shown in FIGS. 8 and 12 is obtained.

  Thereby, even if a gap is formed between the movable side flange 19 and the movable side holder 30 or between the fixed side flange 20 and the fixed side holder 26, the entire movable side holder 30 is [x +]. The gap is eliminated or reduced because it moves in the direction. Further, when the gap is not formed, the roll body R is pressed against the fixed side holder 26 by the movable side holder 30, and the roll body R does not move in the rotation axis direction, and the position thereof is one. This will contribute to maintaining good recording quality.

  The tooth profile of the ratchet teeth 35 and the engaging claws 45a meshing with the ratchet teeth 35 has a shape that restricts the movement of the lever member 45 (movable side holder 30) in the [x-] direction as shown in FIGS. Thus, once the engagement claw 45a meshes with the ratchet teeth 35, the movable side holder 30 does not easily move away from the fixed side holder 26.

  As described above, when the operating lever 41 is operated in the engaging direction in a state where the engaging claw 45a is disengaged from the ratchet teeth 35, the cam block 43 and the tension spring 46 are fixed to the lever member 41 on the fixed side. An “engaging portion displacing means” is configured to engage the engaging claw 45 a with the ratchet teeth 35 after being displaced by a predetermined amount toward the holder 26 ([x +] direction).

  The cam block 43, the tension spring 46, and the coil spring 47 are movable when the operation lever 41 is operated in the engagement direction in a state where the engagement claw 45a is disengaged from the ratchet teeth 35. “Holder moving means” is configured to move the holder 30 to the fixed side holder 26 side ([x +] direction) by a predetermined amount.

  Needless to say, the embodiment described above is merely an example, and the present invention is not limited thereto. That is, it is interposed between the operating portion (the operating lever 41 in the present embodiment) and the engaging portion (the engaging claw 45a in the present embodiment), and the engaging portion is the engaged portion (the ratchet teeth in the present embodiment). 35), when the operating portion is operated in a direction in which the engaging portion engages with the engaged portion, the movable side holder 30 is displaced in a predetermined amount [x +] direction. Any means may be used as long as it is a means that causes the movable holder 30 to generate a pressing force in the [x +] direction. In the above description, “intervening between the operation portion and the engagement portion” does not mean that the operation portion is interposed between the both, but is functionally interposed between the two. It does not exclude what is positioned between the engaging portion and the engaging portion.

1 is an external perspective view of a printer according to the present invention. 1 is an external perspective view of a printer according to the present invention. The principal part side view of the printer which concerns on this invention The perspective view of a locking mechanism. The perspective view of a locking mechanism. The top view of a locking mechanism (lock release state). The top view of a locking mechanism (intermediate state). The top view of a locking mechanism (locked state). The partial enlarged plan view of a lock mechanism (lock release state). The partial enlarged plan view of a locking mechanism (intermediate state). The partial enlarged plan view of a locking mechanism (intermediate state). The partial enlarged plan view of a locking mechanism (locked state). Side view of the operating lever (lock release state). Side view of the operation lever (intermediate state). Side view of the operation lever (intermediate state).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 main body part, 3 roll paper supply part, 4 recording execution part, 5 main body support part, 6 roll paper discharge port, 8 support | pillar, 9 base, 10, 11 guide member, 12 carriage, 13 recording head, 14 Guide shaft, 15 Drive roller, 16 Drive roller, 18 Cover, 19 Movable flange, 20 Fixed flange, 21 Temporary placement part, 22 Positioning guide, 24 Guide rail, 26 Fixed holder, 27 Drive shaft, 28 Drive motor, 29 flange support surface, 30 movable side holder, 31 driven shaft, 32 handle, 34 guide rail, 35 ratchet teeth, 36 holder base, 36a flange support surface, 36b flange, 36c guide groove, 40 lock mechanism, 41 operation lever, 41a Rotating shaft, 41b Guide groove, 42 Base frame, 4 2a, 42b guide groove, 43 cam block, 43a cam surface, 43b lever pressing surface, 43d roller, 43e boss, 44 guide rail, 45 lever member, 45a engagement claw, 45b roller, 45c spring locking part, 45d pressed Part, 45e rocking shaft, 46 tension spring, 47 coil spring, 48 frame, P roll paper (recording medium), R roll body

Claims (5)

A first holder that fits into a shaft hole at one end of a roll body on which a recording medium is wound, and a first holder that is movable in the rotational axis direction of the roll body;
A roll body support device for supporting the roll body, comprising: a second holder having a second shaft that fits into a shaft hole at the other end of the roll body;
The first holder includes a locking means for locking the position of the first holder,
The locking means includes an engaging portion that can be engaged and disengaged with respect to an engaged portion that extends along a moving direction of the first holder.
An operation unit for performing switching operation of engagement and disengagement of the engagement portion with respect to the engaged portion;
The operating portion is interposed between the operating portion and the engaging portion, and the engaging portion is engaged with the engaged portion in a state where the engaging portion is disengaged from the engaged portion. A holder moving means for moving the first holder by a predetermined amount in a direction approaching the second holder after engaging the engaging portion with the engaged portion when operated in an engaging direction;
A roll body support device characterized by comprising: A first holder that fits into a shaft hole at one end of a roll body on which a recording medium is wound, and a first holder that is movable in the rotational axis direction of the roll body;
A roll body support device for supporting the roll body, comprising: a second holder having a second shaft that fits into a shaft hole at the other end of the roll body;
The first holder includes a locking means for locking the position of the first holder,
The lock means can be engaged and disengaged with respect to the engaged portion extending along the moving direction of the first holder, and is provided so as to be displaceable by a predetermined amount in the moving direction of the first holder. And
An engaging portion biasing means for biasing the engaging portion in a direction away from the second holder;
An operation unit for performing switching operation of engagement and disengagement of the engagement portion with respect to the engaged portion;
The operating portion is interposed between the operating portion and the engaging portion, and the engaging portion is engaged with the engaged portion in a state where the engaging portion is disengaged from the engaged portion. Engaging portion displacing means for engaging the engaged portion after displacing the engaging portion by a predetermined amount toward the second holder when operated in the engaging direction;
A roll body support device characterized by comprising: The roll body support device according to claim 2, wherein the engaging portion engages the engaged portion with the engaged portion by swinging about a swing shaft and the engaged portion. Provided in the lever member to switch the posture to be separated from,
The engagement portion displacing means is provided so as to be engageable with both the operation portion and the lever member, and the operation portion is moved in the state where the engagement portion is disengaged from the engaged portion. A cam member that moves the lever member toward the second holder by a predetermined amount when operated in a direction in which an engaging portion engages with the engaged portion;
Lever member urging means for urging the lever member in a direction in which the engaging portion engages with the engaged portion.
A roll body support device characterized by that. The roll body support device according to any one of claims 1 to 3, wherein the engaged portion is configured by a plurality of ratchet teeth provided at predetermined intervals along a moving direction of the first holder.
The engaging portion is configured by an engaging claw that engages with the ratchet teeth,
The ratchet teeth have a shape whose tooth profile regulates movement of the first holder in a direction away from the second holder.
A roll body support device characterized by that. A recording unit for recording on a recording medium;
The roll body support device according to any one of claims 1 to 4,
A recording apparatus comprising:

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