JP2015160363A - Recording device and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more easily and reliably perform work for aligning phases of gears with each other.SOLUTION: A recording device comprises: a recording section performing recording to a medium; and a driven section driven by a driving source. The driven section comprises: a first gear; a second gear engaging with the first gear; a first positioning portion facing a first portion to be positioned formed on the first gear; and a second positioning portion facing a second portion to be positioned formed on the second gear. The first positioning portion and the second positioning portion are holes, and the first portion to be positioned and the second portion to be positioned are holes or recessed portions. The hole formed on the first positioning portion has a shape and a size similar to the hole or the recessed portion formed on the first portion to be positioned, and the hole formed on the second positioning portion has a shape and a size similar to the hole or the recessed portion formed on the second portion to be positioned.

Description

  The present invention relates to a recording apparatus that performs recording on a medium, and a method of manufacturing the recording apparatus.

  In a recording apparatus represented by a facsimile or a printer, various driving objects (such as a paper feed roller and a carriage) are driven using a motor as a driving source. A gear is often used for power transmission from a motor to a drive target.

  By the way, it may be necessary to control the phase at the time of rotation for the object to be driven. For example, Patent Document 1 discloses a technique for adjusting the phases of two gears by using a gear with a phase alignment mark and aligning the phase alignment marks of the two gears.

JP 2008-81228 A

  However, in the technique described in Patent Document 1, a phase alignment mark is attached to a phase alignment gear and the phases of the gears are aligned by visually observing the phase alignment mark (relying only by visual observation). As a result, when the gears are engaged, the phase may be shifted by one tooth or more.

  Therefore, the present invention has been made in view of such a situation, and an object of the present invention is to more easily and reliably perform the operation of adjusting the phases of gears.

  In order to solve the above problems, a recording apparatus according to a first aspect of the present invention includes a recording unit that performs recording on a medium, and a driven unit that is driven by a driving source, and the driven unit includes: A first gear, a second gear meshing with the first gear, a first positioning portion facing the first positioned portion formed on the first gear, and a second gear formed on the second gear. And a second positioning portion facing the positioning portion.

  According to this aspect, the first gear has the first positioned portion, the second gear has the second positioned portion, and each can be positioned by the first positioning portion and the second positioning portion, That is, since the gears can be phase-aligned, there is no need to rely on visual inspection when the first gear and the second gear are phase-matched, and the phase-matching operation between the gears can be performed easily and reliably. .

  According to a second aspect of the present invention, in the first aspect, the first positioning portion and the second positioning portion are holes or recesses, and the first positioned portion and the second positioned portion are holes or recesses. The hole formed in the first positioning portion and the hole or recess formed in the first positioned portion have the same outer shape and size, and the hole formed in the second positioning portion and the hole The holes or recesses formed in the second positioned portion are characterized by the same outer shape and size.

  According to this aspect, the hole formed in the first positioning portion and the hole or recess formed in the first positioned portion have the same outer shape and size, and are formed in the second positioning portion. Since the holes and the recesses formed in the hole and the second positioned portion have the same outer shape and size, the operation of matching the phases of the gears can be performed more accurately.

  According to a third aspect of the present invention, in the first or second aspect, a set of the first positioning portion and the first positioned portion, and the second positioning portion and the second positioned portion. The set is characterized in that at least one of the sets is provided in plural.

  According to this aspect, at least any one of the set of the first positioning portion and the first positioned portion and the set of the second positioning portion and the second positioned portion is provided in a plurality. Therefore, when positioning the first gear or positioning the second gear, the gear is difficult to rotate and can be positioned more accurately.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the first positioning portion is formed on a first frame portion disposed to face the first gear, and the second positioning portion. Is formed in a second frame portion disposed opposite to the second gear, and the first frame portion and the second frame portion are formed of one frame material.

  According to this aspect, since the first positioning portion and the second positioning portion are formed in one frame material, the first gear and the second gear can be phased more accurately. can do.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the detector includes a detection unit that detects a phase of the first gear, and the detection unit is formed integrally with the first gear, A detection unit that rotates together with the first gear and a detection unit that detects the detection unit are provided.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, a conveyance driving roller that conveys the medium, a conveyance driven roller that is driven to rotate while sandwiching the medium between the conveyance driving rollers, A roller support member that supports the transport driven roller and displaces the transport driven roller in the direction of approaching and separating from the transport drive roller by swinging, and engages with the roller support member and rotates. And a cam that is rotated by the rotation of the second gear.

  A seventh aspect of the present invention includes a recording unit that performs recording on a medium and a driven unit that is driven by a driving source, and the driven unit meshes with the first gear and the first gear. A second gear, a first positioning portion facing the first positioned portion formed on the first gear, and a second positioning portion facing the second positioned portion formed on the second gear. A manufacturing method of a recording apparatus comprising the first positioning portion and the first positioning portion that is engageable with the first positioning portion and the first positioning portion. The second positioned portion is positioned with respect to the second positioning portion by a second positioning pin that is positioned and engageable with the second positioning portion and the second positioned portion.

  According to this aspect, the first positioning pin is engaged with the first positioning portion and the first positioned portion, and the second positioning pin is engaged with the second positioning portion and the second positioned portion. Since the first gear and the second gear can be positioned, that is, the phases of the gears can be matched, there is no need to rely on visual inspection when the phases of the first gear and the second gear are matched. Can be carried out easily and reliably.

  According to an eighth aspect of the present invention, in the seventh aspect, the first positioning portion and the second positioning portion are holes, and the first positioned portion and the second positioned portion are holes or recesses. The hole formed in the first positioning portion, the hole or recess formed in the first positioned portion, and the first positioning pin are equal in fitting shape and size, and (2) The hole formed in the positioning portion, the hole or recess formed in the second positioned portion, and the second positioning pin have the same shape and size of fitting.

  According to this aspect, the hole formed in the first positioning portion, the hole or recess formed in the first positioned portion, and the first positioning pin are formed in a fitting shape and size. Since the holes formed in the second positioning portion, the holes or recesses formed in the second positioned portion, and the second positioning pin have the same shape and size of fitting. Thus, the operation of matching the phases of the gears can be performed more accurately.

  According to a ninth aspect of the present invention, in the seventh or eighth aspect, the first positioning portion, the first positioned portion, the set of the first positioning pins, and the second positioning portion, At least one of these sets of the second positioned portion and the second positioning pin is provided in a plurality.

  According to this aspect, the first positioning portion, the first positioned portion, the set of the first positioning pins, and the second positioning portion, the second positioned portion, the second positioning pin, Since at least any one of these groups is provided, when positioning the first gear or when positioning the second gear, the gear is difficult to rotate and is positioned more accurately. be able to.

  According to a tenth aspect of the present invention, in the ninth aspect, at least one of the plurality of first positioning pins and the second positioning pins provided is connected at one end.

  According to this aspect, since the plurality of pins are connected to each other, the gear is more difficult to rotate when positioning the gear, and the gear can be positioned more accurately.

1 is an external perspective view of a printer according to the present invention. FIG. 3 is a side sectional view of a paper conveyance path of the printer according to the invention. The perspective view of the to-be-driven part provided in the apparatus main body and driven by a drive source. The perspective view of the to-be-driven part provided in the apparatus main body and driven by a drive source. The perspective view of the to-be-driven part driven with a drive source. Sectional drawing seen from the drive source side of the to-be-driven part driven by a drive source. Sectional drawing seen from the drive source side of the to-be-driven part driven by a drive source. The sectional side view which shows the nip state of the conveyance roller pair in a nip cancellation | release part. The sectional side view which shows the nip cancellation | release state of the conveyance roller pair in a nip cancellation | release part. The side view which shows the 1st to-be-positioned part formed in the 1st gear in the to-be-driven part, and the 2nd to-be-positioned part formed in the 2nd gear. The perspective view which shows the 1st positioning part facing a 1st to-be-positioned part. The perspective view which shows the state which inserted the 1st positioning pin in the 1st positioning part in FIG. The perspective view which shows the 2nd positioning part facing a 2nd to-be-positioned part. The perspective view which shows the state which inserted the 2nd positioning pin in the 2nd positioning part in FIG. The top view in the state which positioned the 1st gear and the 2nd gear with the 1st positioning pin and the 2nd positioning pin, respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, about the same structure in each Example, the same code | symbol is attached | subjected and it demonstrates only in the first Example, The description of the structure is abbreviate | omitted in a subsequent Example.

  FIG. 1 is an external perspective view of a printer according to the present invention, FIG. 2 is a side sectional view of a paper transport path of the printer according to the present invention, and FIG. 3 is driven by a drive source provided in the apparatus main body. FIG. 4 is a perspective view of a driven portion provided in the apparatus main body and driven by a driving source, and FIG. 5 is a perspective view of the driven portion driven by the driving source. is there.

  6 is a cross-sectional view of the driven part driven by the drive source as viewed from the side opposite to the drive source, and FIG. 7 is a cross-sectional view of the driven part driven by the drive source as viewed from the drive source side. 8 is a side sectional view showing the nip state of the conveying roller pair in the nip releasing portion, FIG. 9 is a side sectional view showing the nip releasing state of the conveying roller pair in the nip releasing portion, and FIG. It is a side view which shows the 1st to-be-positioned part formed in the 1st gear, and the 2nd to-be-positioned part formed in the 2nd gear.

  11 is a perspective view showing a first positioning portion facing the first positioned portion, and FIG. 12 is a perspective view showing a state where a first positioning pin is inserted into the first positioning portion in FIG. FIG. 14 is a perspective view showing a second positioning portion facing the second positioned portion, FIG. 14 is a perspective view showing a state where a second positioning pin is inserted into the second positioning portion in FIG. 13, and FIG. It is a top view in the state where 1 gear and 2nd gear were positioned with the 1st positioning pin and the 2nd positioning pin, respectively.

  In the XYZ coordinate system shown in each figure, the X direction is the scanning direction of the recording head, the Y direction is the depth direction of the recording apparatus and the paper transport direction, and the Z direction is the distance (gap between the recording head and the paper). ) In the changing direction, that is, the device height direction. In each figure, the -Y direction is the front side of the apparatus, and the + Y direction side is the back side of the apparatus.

■■■ About the printer overview ■■■■■■■
Referring to FIGS. 1 and 2, a printer 10 according to the present invention is shown. The printer 10 includes an apparatus main body 12 and a document reading device 14 provided on an upper portion of the apparatus main body 12 so as to be rotatable with respect to the apparatus main body 12. The apparatus main body 12 includes an operation panel unit 16 for a user to operate the printer 10 on the front side of the apparatus (FIG. 1-Y side), a discharge port 18 opened on the front side of the apparatus, and a lower side of the discharge port 18. And a medium accommodating unit 20 disposed therein.

  With reference to FIG. 2, the conveyance path of the paper P as the “medium” in the printer 10 will be described. The printer 10 includes a medium storage unit 20, a transport unit 22, a recording unit 24, and a discharge unit 26 in the apparatus main body 12.

  The medium storage unit 20 includes a plurality of medium storage trays 28 and 28 that store paper P as “medium”. Each of the medium storage trays 28 and 28 is configured to be attachable to and detachable from the apparatus main body 12 from the front side of the apparatus (the −Y direction in FIG. 2). Each medium storage tray 28 can store different types of paper.

  Pickup rollers 30 and 30 that are rotationally driven by a drive source (not shown) are provided above the medium storage trays 28 and 28, respectively. The pickup rollers 30 and 30 are configured to be swingable in a direction approaching or separating from the paper P, respectively.

  When feeding the paper P stored in the medium storage tray 28 to the downstream side of the transport path based on a command input from the operation panel unit 16, the pickup roller 30 is positioned at the top of the paper P stored in the medium storage tray 28. , The uppermost sheet P is sent out from the medium storage tray 28 to the downstream side of the conveyance path.

  The transport unit 22 includes a first roller 32, a second roller 34, a plurality of driven rollers 36 that are driven to rotate in contact with the first roller 32 and the second roller 34, and a downstream side in the transport direction of the second roller 34. A pair of transport rollers 38 are provided. The conveyance roller pair 38 includes a conveyance driving roller 40 and a conveyance driven roller 42. In the present embodiment, the first roller 32 and the second roller 34 are driven to rotate counterclockwise in FIG. 2 by a drive motor (not shown). The transport driving roller 40 is rotated by a driving source (not shown).

  The paper P fed from the medium storage unit 20 is conveyed to the conveyance roller pair 38 through the first roller 32 and the second roller 34 in order in the conveyance unit 22. A recording unit 24 is provided on the downstream side of the conveyance path of the conveyance roller pair 38 of the conveyance unit 22.

  The recording unit 24 includes a carriage 44 that can move in the scanning direction (the X-axis direction in FIG. 2, that is, the front and back sides of the paper), a recording head 46 that is provided below the carriage 44, and that ejects ink onto the paper P. And a platen 48 provided to support the paper P.

  Further, a discharge unit 26 is provided on the downstream side of the conveyance path of the recording unit 24. The discharge unit 26 is provided with a pair of discharge rollers 50 and a discharge stacker 52 on which the paper P discharged from the discharge roller pair 50 is placed so as to protrude from the discharge port 18 on the front side of the apparatus (−Y direction). . The recording unit 24 records the paper P sent from the transport unit 22 to the recording unit 24 along the transport path. After recording in the recording unit 24, the paper P is nipped by the discharge roller pair 50 and discharged to a discharge stacker 52 provided on the front side of the apparatus. The discharge roller pair 50 is driven and rotated by a drive source (not shown).

■■■ Overview of transport roller to nip release mechanism ■■■■■■■
Next, the conveyance roller pair nip release mechanism 54 will be described with reference to FIGS. The conveyance roller pair nip release mechanism 54 includes a driven portion 56 and a nip release portion 58.

  As shown in FIGS. 3 to 7, the driven portion 56 is provided in the apparatus main body 12. The driven portion 56 includes a drive motor 60, a drive gear 62 attached to the rotation shaft of the drive motor 60, a first transmission gear 64, a second transmission gear 66, a third transmission gear 68, and a first transmission gear. A gear 70, a second gear 72, and a swing shaft 74 are provided. In addition, the 1st transmission gear 64, the 2nd transmission gear 66, and the 3rd transmission gear 68 are each comprised as a compound gear provided with a large diameter part and a small diameter part.

  A swing shaft 74 is attached to the second gear 72. The swing shaft 74 is rotatably supported by the apparatus main body 12. That is, the second gear 72 is configured to be rotatable integrally with the swing shaft 74.

  The drive gear 62 and the large diameter portion of the first transmission gear 64 are fitted, the small diameter portion of the first transmission gear 64 and the large diameter portion of the second transmission gear 66 are fitted, and the small diameter of the second transmission gear 66. And the large diameter portion of the third transmission gear 68 are fitted, the small diameter portion of the third transmission gear 68 and the first gear 70 are fitted, and the first gear 70 and the second gear 72 are fitted. ing.

  Therefore, when the drive motor 60 is rotated, the driving force of the drive motor 60 is transmitted and the swing shaft 74 is driven to rotate. In this embodiment, when the drive gear 62 attached to the rotation shaft of the drive motor 60 in FIG. 6 rotates in the clockwise direction, the first gear 70 rotates in the clockwise direction, and the second gear 72 and the swing shaft 74 are rotated. Rotates counterclockwise. Further, when the drive gear 62 rotates in the counterclockwise direction, the first gear 70 rotates counterclockwise, and the second gear 72 and the swing shaft 74 rotate in the clockwise direction.

  Next, the detection means 75 that detects a change in the phase of the driven unit 56 will be described. The detection means 75 includes a detected part 76 and a detection sensor 82. The detected portion 76 is formed in a disc shape and is attached to the first gear 70 so as to rotate together with the first gear 70 as shown in FIGS. 5 and 7. Notches 78 and 80 are provided on the periphery of the detected portion 76 at intervals in the circumferential direction.

  The detection sensor 82 includes a light emitting unit and a light receiving unit, and the light emitting unit and the light receiving unit are disposed so as to sandwich the detected portion 76. In the present embodiment, as an example, the detection sensor 82 is configured as an optical detector.

  In the driven portion 56, when the detection sensor 82 and the cutout portions 78 and 80 are in corresponding positions, and the cutout portions 78 and 80 are positioned between the light emitting portion and the light receiving portion, the detection sensor 82 detects. It becomes a state. On the other hand, when the detection sensor 82 and the notched portions 78 and 80 are in a non-corresponding position state and the notched portions 78 and 80 are not positioned between the light emitting portion and the light receiving portion, the detected portion 76 is separated from the light emitting portion. Therefore, the detection sensor 82 is in a non-detection state. Therefore, the detection sensor 82 can detect the phase state of the detected portion 76.

  The detection sensor 82 is connected to a control unit 84 (see FIG. 5) provided in the apparatus main body 12, and transmits detection information on the phase state of the detected unit 76 in the detection sensor 82 to the control unit 84. . The control unit 84 controls the rotation direction and rotation on / off of the drive motor 60 based on the detection information of the detected unit 76.

  Next, the nip release unit 58 will be described with reference to FIGS. 8 and 9. A cam 86 (see FIG. 4) is formed on the swing shaft 74. A nip releasing portion 58 is provided at a position corresponding to the cam 86 of the swing shaft 74 in the X-axis direction in FIG. The nip release unit 58 cancels the first state in which the transport drive roller 40 and the transport driven roller 42 are in the nip state in the transport roller pair 38 and the nip state between the transport drive roller 40 and the transport driven roller 42. The state of 2 can be switched.

  Specifically, the nip release unit 58 includes an arm 88 as a “roller support member” and an urging member 90. A conveyance driven roller 42 is rotatably provided at the tip of the arm 88. The arm 88 is configured to be swingable in a direction in which the transport driven roller 42 provided at the tip of the arm 88 approaches and separates from the transport driving roller 40. One end of the biasing member 90 is attached to the apparatus main body 12 side, and the other end is attached to the base end portion of the arm 88 on the swing shaft 74 side, and biases the base end portion toward the + Z-axis direction. ing.

  As shown in FIG. 8, when the cam 86 is not in contact with the base end side of the arm 88, the biasing force of the biasing member 90 acts on the base end side of the arm 88. That is, the transport driven roller 42 on the distal end side of the arm 88 is pressed against the transport driving roller 40 by the biasing force of the biasing member 90. That is, the nip release unit 58 is in a first state in which the transport driving roller 40 and the transport driven roller 42 are in the nip state in the transport roller pair 38.

  Next, as shown in FIG. 9, when the swing shaft 74 rotates clockwise and the cam 86 depresses the proximal end side of the arm 88 against the biasing force of the biasing member 90, the distal end side of the arm 88 is + Z The conveyance driven roller 42 is moved away from the conveyance driving roller 40 by swinging in the axial direction. That is, the nip release unit 58 is in a second state in which the nip state between the transport driving roller 40 and the transport driven roller 42 in the transport roller pair 38 is eliminated.

  When the swing shaft 74 rotates counterclockwise from this state, the pressing state of the base end side of the arm 88 by the cam 86 is canceled. Then, the arm 88 returns to the position where the transport driven roller 42 contacts the transport driving roller 40 (the state shown in FIG. 8) by the biasing force of the biasing member 90.

  Here, referring again to FIG. 7, in this embodiment, the state in which the detection sensor 82 is located between the notch 78 and the notch 80 in the circumferential direction of the detected portion 76 (the state shown in FIG. 7). It is the phase state P1 corresponding to the 1st state of the nip release part 58 in FIG.

When the nip release unit 58 changes from the first state to the second state, the control unit 84 causes the first gear 70 in the phase corresponding to the detected portion 76 in the phase state P1 to move the first gear 70 in FIG. Rotate clockwise (clockwise in FIG. 6). As a result, the second gear 72 and the swing shaft 74 rotate in the clockwise direction in FIGS. 7 and 8 (counterclockwise direction in FIG. 6).

  Further, the detected portion 76 rotates in the counterclockwise direction in FIG. 7 together with the first gear 70. Therefore, the detection sensor 82 switches from the non-detection state to the detection state when the one end 80a of the notch 80 passes through the detection sensor 82, and switches from the detection state to the non-detection state when the other end 80b passes.

  When the one end 80a of the notch 80 passes through the detection sensor 82 and switches to the detection state, the control unit 84 drives the drive motor when the other end 80b passes through the detection sensor 82 and switches to the non-detection state. The rotation of 60 is stopped. As a result, the cam 86 pushes down the base end side of the arm 88 to change the nip release portion 58 from the first state to the second state. The state in which the other end 80b of the cutout portion 80 of the detected portion 76 passes through the detection sensor 82 and switches to the non-detection state is a phase state P2 (corresponding to the second state of the nip release portion 58). (Not shown).

  That is, the amount of rotation of the first gear 70 until the detection sensor 82 changes from the phase state P1 to the phase state P2 corresponds to the drive amount for switching between the first state and the second state in the cam 86. That is, the control unit 84 controls the first state and the second state of the nip release unit 58 based on the rotation amount of the first gear 70. That is, the control unit 84 does not control the drive of the driven unit 56 by detecting the rotation amount of the cam 86 and thus the second gear 72, but controls the drive of the cam 86 via the first gear 70. Will be.

  Here, the control of the nip release unit 58 in the control unit 84 is based on the premise that the detection timing of the change in the phase state of the detected portion 76 (first gear 70) by the detection sensor 82 matches the operation timing of the cam 86. It is done below. That is, when the detection timing of the change in the phase state of the detected portion 76 (first gear 70) by the detection sensor 82 deviates from the operation timing of the cam 86, the conveyance driving roller 40 and the conveyance driven roller 42 There is a possibility that a state in which the nip is not released normally or a state in which the transport driven roller 42 is pressed too much against the transport driving roller 40 and the transport roller pair 38 is damaged.

  In addition, when the first gear 70 and the second gear 72 are engaged with one tooth or more, the nip force between the transport driving roller 40 and the transport driven roller 42 deviates from a specified value. The conveyance of the paper P may be affected, and the recording quality of the paper P may be reduced. Therefore, it is necessary to match the phases of the first gear 70 and the second gear 72 (cam 86).

■■■ Overview of phase alignment between the first gear and the second gear ■■■■■■■
The phase alignment between the first gear 70 and the second gear 72 will be described with reference to FIGS. In this embodiment, the phase alignment between the first gear 70 and the second gear 72 is a state where the predetermined teeth of the first gear 70 and the predetermined teeth of the second gear 72 are correctly meshed, that is, the first gear 70. And the second gear 72 are in a state where there is no misalignment of one tooth or more.

  As shown in FIG. 10, at least one first positioned portion 92 is formed in the first gear 70. In the present embodiment, two first positioned portions 92 and 92 are formed in the first gear 70. In the present embodiment, the first positioned portions 92 and 92 are formed as holes.

  Here, the first gear 70 is attached to the first frame portion 94. The first frame portion 94 is provided with a number of first positioning portions 96 corresponding to the first positioned portions 92 provided in the first gear 70. That is, in the present embodiment, two first positioning portions 96, 96 are provided. Further, the first positioning portions 96 and 96 are formed as holes in the first frame portion 94.

  Further, in the first frame portion 94, the first positioning portions 96, 96 are, for example, the positions of the first positioned portions 92, 92 in the phase state P1 when the first gear 70 is attached to the first frame portion 94. It is formed in the position which opposes. Further, the hole of the first positioning portion 96 and the hole of the first positioned portion 92 are formed to have the same outer shape and size.

  Also, as shown in FIGS. 12 and 15, the first positioning pins 98 are connected to the first positioning pins 98 from the side opposite to the side where the first gear 70 is provided (the + X axis direction side in FIG. 15). The first positioning pin 98 is inserted into each first positioned portion 92 of the first gear 70 after being inserted into the positioning portion 96. Thereby, the first positioned portion 92 of the first gear 70 is positioned with respect to the first positioning portion 96.

  That is, the first gear 70 is attached to the first frame portion 94 in a predetermined phase state, in this embodiment, in the phase state P1. The state of the predetermined phase in the first gear 70 is a state in which the teeth to be engaged with the teeth of the second gear 72 are in the correct positions.

  Further, the first positioning pin 98 prevents the first gear 70 from rotating and changing from a predetermined phase state while being passed through the first positioning portion 96 and the first positioned portion 92. The first positioning pin 98 can be engaged with the hole of the first positioning portion 96 and the hole of the first positioned portion 92, and the outer shape and size of the first positioning pin 98 is the first positioning portion 96. And the hole of the first positioned portion 92 are formed to be equal.

  Referring to FIG. 10 again, at least one second positioned portion 100 is formed in the second gear 72. In the present embodiment, two second positioned parts 100, 100 are formed on the second gear 72. In the present embodiment, the second positioned parts 100 and 100 are formed as recesses that are open on the opposite side to the first frame part 94, that is, on the −X-axis direction side in FIGS.

  As shown in FIGS. 13 and 14, the second frame portion 102 is provided on the opposite side (the −X axis direction side) to the side where the first frame portion 94 is provided with respect to the second gear 72. The second frame portion 102 is provided with the number of second positioning portions 104 corresponding to the second positioned portion 100 provided in the second gear 72. That is, in the present embodiment, two second positioning portions 104 and 104 are provided. The second positioning portions 104 and 104 are formed as holes in the second frame portion 102.

  Further, in the second frame portion 102, the second positioning portions 104 and 104 have the phase of the second gear 72 that matches the first gear 70 attached to the first frame portion 94 at a predetermined phase, that is, the first A position facing the second positioned parts 100, 100 of the second gear 72 in a state where the predetermined tooth of the gear 70 and the predetermined tooth of the second gear 72 are correctly engaged with each other. Is formed. Further, the outer shape and size of the hole of the second positioning portion 104 and the concave portion of the second positioned portion 100 are equal.

  Further, as shown in FIGS. 14 and 15, the second positioning pins 106 are connected to the second positioning pins 106 from the side opposite to the side facing the second gear 72 of the second frame portion 102 (the −X axis direction side in FIG. 15). The second positioning pin 106 is inserted into each second positioned portion 100 of the second gear 72 after being inserted into the positioning portion 104. Thereby, the second positioned portion 100 of the second gear 72 is positioned with respect to the second positioning portion 104.

  Therefore, the second gear 72 is attached to the first frame portion 94 side at a predetermined phase. The state of the predetermined phase in the second gear 72 refers to a state where the teeth to be engaged with the teeth of the first gear 70 are in the correct positions.

  In addition, the second positioning pin 106 prevents the second gear 72 from rotating and changing from a predetermined phase state while being passed through the second positioning portion 104 and the second positioned portion 100. The second positioning pin 106 can be engaged with the hole of the second positioning portion 104 and the concave portion of the second positioned portion 100, and the outer shape and size of the second positioning pin 106 are the second positioning portion 104. And the recesses of the second positioned portion 100 are formed to be equal to each other.

  That is, the first gear 70 and the second gear 72 are positioned with respect to the first frame portion 94 and the second frame portion 102, respectively, at a predetermined phase when the driven portion 56 is assembled. Therefore, the first gear 70 and the second gear 72 are fitted in a predetermined phase. When the assembly of the driven portion 56 is finished, the predetermined phase does not go out of order even if the first positioning pin 98 and the second positioning pin 106 are pulled out from the first gear 70 and the second gear 72, respectively.

  Therefore, it is not necessary to rely on visual inspection in the phase alignment between the first gear 70 and the second gear 72. Further, when the control unit 84 drives the driven unit 56 by the drive motor 60, the first gear 70 and the second gear 72 are meshed with each other at a predetermined phase, so that the nip release unit 58 can be moved without being out of timing. In addition to being able to operate, since the nip force in the conveying roller pair 38 is also a specified value, it is possible to suppress a decrease in recording quality of the paper P.

  The assembly procedure of the first gear 70 and the second gear 72 in this embodiment will be described. First, the second gear 72 integrated with the swing shaft 74 is attached to the first frame portion 94 side. Next, the second positioning pins 106 and 106 are inserted into the second positioning portions 104 and 104 in the second frame portion 102 from the −X axis direction side in FIG.

  Further, the second positioning pins 106 and 106 are pushed toward the second gear 72 side, and the second positioning pins 106 and 106 are inserted into the second positioned portions 100 and 100 of the second gear 72 so as to be inserted into the second gear 72. 72 phase is adjusted. When the second positioning pins 106 and 106 are inserted into the second positioned parts 100 and 100 of the second gear 72, the phase determination of the second gear 72 is completed.

  Next, in the first frame portion 94, first positioning pins 98 and 98 are inserted into the first positioning portions 96 and 96 from the + X-axis direction side in FIG. 15, respectively, and further from the first frame portion 94 to the −X-axis direction side in FIG. To protrude.

  In this state, the first frame 70 is adjusted while adjusting the phase of the first gear 70 so that the first positioning pins 98, 98 protruding from the first frame portion 94 pass through the first positioned portions 92, 92 of the first gear 70. It is attached to the portion 94. Accordingly, the first gear 70 is attached to the first frame portion 94 with a predetermined phase.

Therefore, the first gear 70 and the second gear 72 are fitted in a predetermined phase.
Thereafter, the first positioning pin 98 is pulled out from the first gear 70 and the first frame portion 94, and then the second positioning pin 106 is pulled out from the second gear 72 and the second frame portion 102, whereby the first gear in the driven portion 56 is obtained. The phase alignment and assembly of 70 and the second gear 72 are completed.

  In summary, the first gear 70 has a first positioned portion 92, and the second gear 72 has a second positioned portion 100. Each of them can be positioned by the first positioning portion 96 and the second positioning portion 104, that is, the gears can be phase-matched. Therefore, the phases of the first gear 70 and the second gear 72 are visually checked. There is no need to rely on, and the operation of matching the phases of the gears can be performed easily and reliably.

  Further, the hole formed in the first positioning portion 96 and the hole or recess formed in the first positioned portion 92 have the same outer shape and size, and the hole formed in the second positioning portion 104 and the second The holes or recesses formed in the positioned portion 100 have the same outer shape and size, so that the operation of matching the phases of the gears can be performed more accurately.

  In addition, since at least one of the first positioning portion 96 and the first positioned portion 92 and the second positioning portion 104 and the second positioned portion 100 are provided in combination, When positioning the first gear 70 or when positioning the second gear 72, the gear is difficult to rotate and can be positioned more accurately.

  Further, the first positioning pin 98 is engaged with the first positioning portion 96 and the first positioned portion 92, and the second positioning pin 106 is engaged with the second positioning portion 104 and the second positioned portion 100. Thus, since the first gear 70 and the second gear 72 can be positioned, that is, the phases of the gears can be matched, there is no need to rely on visual inspection when the first gear 70 and the second gear 72 are phased. The operation of adjusting the phases of each other can be performed easily and reliably.

  Further, the hole formed in the first positioning portion 96, the hole or recess formed in the first positioned portion 92, and the first positioning pin 98 have the same fitting shape and size, Since the hole formed in the second positioning portion 104, the hole or recess formed in the second positioned portion 100, and the second positioning pin 106 have the same shape and size of fitting, the gear The operation of matching the phases of each other can be performed more accurately.

  In addition, a set of the first positioning portion 96, the first positioned portion 92, and the first positioning pin 98, and a set of the second positioning portion 104, the second positioned portion 100, and the second positioning pin 106. Since at least one of the plurality of sets is provided, when positioning the first gear 70 or when positioning the second gear 72, the gear is difficult to rotate and can be positioned more accurately.

<<< Example of change of embodiment >>>
(1) In the present embodiment, the first positioned portion 92 is configured as a hole, but may be configured as a recess instead of this configuration. Moreover, although the 2nd to-be-positioned part 100 was comprised as a recessed part, it may replace with this structure and may be comprised as a hole.
(2) In the present embodiment, the first positioning portion 96 is configured as a hole, but may be configured as a recess instead of this configuration. Further, the second positioning portion 104 may be configured as a recess instead of the hole.
(3) In this embodiment, the first frame portion 94 formed with the first positioning portion 96 and the second frame portion 102 formed with the second positioning portion 104 are configured as different frame materials. It is good also as a structure which provides the 1st positioning part 96 and the 2nd positioning part 104 in one frame material.

  According to this configuration, since the first positioning portion 96 and the second positioning portion 104 are formed in one frame material, the first gear 70 and the second gear 72 can be phased more accurately. can do.

(4) In the present embodiment, the single first positioning pin 98 is inserted into each of the plurality of first positioning portions 96. However, the end of the first positioning pin 98 opposite to the insertion side is the other end. It is good also as a structure connected with the 1st positioning pin 98. FIG. The second positioning pin 106 may have the same configuration. According to this configuration, since the plurality of pins are connected to each other, the gear is more difficult to rotate when positioning the gear, and the gear can be positioned more accurately.

(5) In the present embodiment, two sets of the first positioning portion 96, the first positioned portion 92, and the first positioning pin 98 are provided. However, one set or three or more sets may be provided. It is good. Also, the set of the second positioning portion 104, the second positioned portion 100, and the second positioning pin 106 may be one set, or three or more sets may be provided.

  In summary, the printer 10 includes the recording unit 24 that performs recording on the paper P and the driven unit 56 that is driven by the drive motor 60. The driven portion 56 includes a first gear 70, a second gear 72 that meshes with the first gear 70, a first positioning portion 96 that faces the first positioned portion 92 that is formed on the first gear 70, A second positioning portion 104 formed on the second gear 72 and a second positioning portion 104 facing the second positioning portion 100 are provided.

  The first positioning portion 96 and the second positioning portion 104 are holes or recesses, and the first positioned portion 92 and the second positioned portion 100 are holes or recesses. The hole formed in the first positioning portion 96 and the hole or recess formed in the first positioned portion 92 have the same outer shape and size. The hole formed in the second positioning portion 104 and the hole or recess formed in the second positioned portion 100 have the same outer shape and size.

  At least one of a plurality of sets of the first positioning portion 96 and the first positioned portion 92 and a set of the second positioning portion 104 and the second positioned portion 100 is provided.

  The first positioning portion 96 is formed in a first frame portion 94 that is disposed to face the first gear 70. The second positioning portion 104 is formed on the second frame portion 102 that is disposed to face the second gear 72. The first frame portion 94 and the second frame portion 102 are made of one frame material.

  The printer 10 includes detection means 75 that detects the phase of the first gear 70. The detecting means 75 includes a detected portion 76 that is integrally formed with the first gear 70 and rotates together with the first gear 70, and a detection sensor 82 that detects the detected portion 76.

  The printer 10 supports the conveyance driving roller 40 that conveys the paper P, the conveyance driven roller 42 that is driven to rotate with the paper P sandwiched between the conveyance driving roller 40, and the conveyance driven roller 42. The arm 88 that displaces the transport driven roller 42 in the direction approaching and separating from the transport drive roller 40, and the arm 88 is engaged with the arm 88, and the transport driven roller 42 is swung by rotating. And a cam 86 that rotates by the rotation of the gear 72.

  The printer 10 includes a recording unit 24 that records on paper P and a driven unit 56 that is driven by a drive motor 60. The driven portion 56 includes a first gear 70, a second gear 72 meshing with the first gear 70, a first positioning portion 96 facing the first positioned portion 92 formed on the first gear 70, A recording apparatus manufacturing method comprising a second positioning portion 104 facing a second positioned portion 100 formed in a second gear 72, wherein a first positioning portion 96 and a first positioned portion 92 are provided. A first positioning pin 98 that can be engaged with the second positioning portion 104 and the second positioned portion 100 by positioning the first positioned portion 92 with respect to the first positioning portion 96 by the engageable first positioning pin 98. The second positioned portion 100 is positioned with respect to the second positioning portion 104 by 106.

  The first positioning part 96 and the second positioning part 104 are holes. The first positioned portion 92 and the second positioned portion 100 are holes or recesses. The hole formed in the first positioning portion 96, the hole or recess formed in the first positioned portion 92, and the first positioning pin 98 have the same fitting shape and size. The hole formed in the second positioning portion 104, the hole or recess formed in the second positioned portion 100, and the second positioning pin 106 have the same fitting shape and size.

  These sets of the first positioning portion 96, the first positioned portion 92, the first positioning pin 98, and the second positioning portion 104, the second positioned portion 100, the second positioning pin 106, A plurality of sets of at least one of them is provided. Further, at least one of the plurality of first positioning pins 98 and second positioning pins 106 is connected to one end side.

In the present embodiment, the configuration and method related to the phase alignment of the first gear 70 and the second gear 72 according to the present invention are applied to an ink jet printer as an example of a recording apparatus, but may be applied to other liquid ejecting apparatuses in general. Is possible.
Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copier, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device for ejecting a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to the recording medium, and attaching the liquid to the ejected medium.

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

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

DESCRIPTION OF SYMBOLS 10 Printer, 12 Apparatus main body, 14 Original reading apparatus, 16 Operation panel part,
18 discharge port, 20 medium storage unit, 22 transport unit, 24 recording unit, 26 discharge unit,
28 Medium storage tray, 30 pickup roller, 32 first roller,
34 Second roller, 36 driven roller, 38 pair of transport rollers,
40 transport drive roller, 42 transport driven roller, 44 carriage,
46 recording head, 48 platen, 50 discharge roller pair, 52 discharge stacker,
54 Transport roller pair nip release mechanism, 56 driven part, 58 nip release part,
60 drive motor, 62 drive gear, 64 first transmission gear, 66 second transmission gear,
68 third transmission gear, 70 first gear, 72 second gear, 74 swing shaft, 75 detecting means, 76 detected portion, 78, 80 notched portion, 80a one end, 80b other end,
82 detection sensor, 84 control unit, 86 cam, 88 arm, 90 biasing member,
92 1st positioning part, 94 1st frame part, 96 1st positioning part,
98 first positioning pin, 100 second positioned portion, 102 second frame portion,
104 2nd positioning part, 106 2nd positioning pin, P paper, P1, P2 phase state

Claims (10)

A recording unit for recording on a medium;
A driven part driven by a driving source,
The driven portion includes a first gear,
A second gear meshing with the first gear;
A first positioning portion facing the first positioned portion formed in the first gear;
A second positioning portion facing the second positioned portion formed in the second gear,
A recording apparatus. The recording apparatus according to claim 1, wherein the first positioning portion and the second positioning portion are holes or recesses,
The first positioned portion and the second positioned portion are holes or recesses,
The hole formed in the first positioning portion and the hole or recess formed in the first positioned portion have the same outer shape and size,
The hole formed in the second positioning portion and the hole or recess formed in the second positioned portion have the same outer shape and size,
A recording apparatus. 3. The recording apparatus according to claim 1, wherein at least one of the set of the first positioning portion and the first positioned portion and the set of the second positioning portion and the second positioned portion is at least one. There are multiple sets of either
A recording apparatus. 4. The recording apparatus according to claim 1, wherein the first positioning portion is formed on a first frame portion disposed to face the first gear,
The second positioning part is formed in a second frame part arranged to face the second gear,
The first frame part and the second frame part are made of one frame material,
A recording apparatus. The recording apparatus according to claim 1, further comprising a detection unit that detects a phase of the first gear.
The detection means is integrally formed with the first gear, and a detected portion that rotates together with the first gear;
A detection unit for detecting the detected unit,
A recording apparatus. In the recording apparatus according to any one of claims 1 to 5, a conveyance driving roller that conveys a medium;
A transport driven roller that is driven to rotate with the medium sandwiched between the transport drive roller, and
A roller support member that supports the transport driven roller and displaces the transport driven roller in the direction of approaching and separating from the transport driving roller by swinging;
A cam that engages with the roller support member and rocks the roller by rotating to rotate by rotation of the second gear.
A recording apparatus. A recording unit for recording on a medium;
A driven part driven by a driving source,
The driven portion includes a first gear;
A second gear meshing with the first gear;
A first positioning portion facing the first positioned portion formed in the first gear;
A recording apparatus manufacturing method comprising: a second positioning portion facing a second positioned portion formed on the second gear;
Positioning the first positioned portion with respect to the first positioning portion by a first positioning pin engageable with the first positioning portion and the first positioned portion;
Positioning the second positioned portion relative to the second positioning portion by a second positioning pin engageable with the second positioning portion and the second positioned portion;
A method of manufacturing a recording apparatus. In the manufacturing method of the recording device according to claim 7, the 1st positioning part and the 2nd positioning part are holes,
The first positioned portion and the second positioned portion are holes or recesses,
The holes formed in the first positioning portion, the holes or recesses formed in the first positioned portion, and the first positioning pin have the same fitting shape and size,
The holes formed in the second positioning portion, the holes or recesses formed in the second positioned portion, and the second positioning pins have the same fitting shape and size.
A method of manufacturing a recording apparatus. 9. The method for manufacturing a recording apparatus according to claim 7, wherein the first positioning portion, the first positioned portion, the set of the first positioning pins, the second positioning portion, and the second positioning portion. At least one of these sets of two positioned parts and the second positioning pins is provided in plural sets.
A method of manufacturing a recording apparatus. The recording apparatus manufacturing method according to claim 9, wherein one end side of at least one of the plurality of first positioning pins and second positioning pins provided is connected.
A method of manufacturing a recording apparatus.

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