WO1998045124A1 - Structure for fixing carriage driving member to carriage driving belt in printer - Google Patents

Structure for fixing carriage driving member to carriage driving belt in printer Download PDF

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Publication number
WO1998045124A1
WO1998045124A1 PCT/JP1998/001668 JP9801668W WO9845124A1 WO 1998045124 A1 WO1998045124 A1 WO 1998045124A1 JP 9801668 W JP9801668 W JP 9801668W WO 9845124 A1 WO9845124 A1 WO 9845124A1
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WO
WIPO (PCT)
Prior art keywords
carriage
belt
carriage driving
drive
driving member
Prior art date
Application number
PCT/JP1998/001668
Other languages
French (fr)
Japanese (ja)
Inventor
Kazumi Hasegawa
Original Assignee
Citizen Watch Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co., Ltd. filed Critical Citizen Watch Co., Ltd.
Priority to JP54260698A priority Critical patent/JP4041543B2/en
Publication of WO1998045124A1 publication Critical patent/WO1998045124A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20—Positive-feed character-spacing mechanisms

Definitions

  • a carriage driving member for engaging a carriage on which a print head is mounted and reciprocating the carriage is attached to the carriage driving belt.
  • a pin (carriage drive pin) as a carriage drive member is fixed to the carriage drive belt, the pin is engaged with the carriage, and the carriage is driven. Reciprocating the carriage equipped with the print head with respect to the platen portion by rotating the drive belt is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-149902. Well known, as disclosed in No. 3.
  • the carriage drive pin 75 has a notch at the center in the axial direction with an axial width almost equal to the width of the carriage drive belt 4.
  • a part 82 is formed.
  • the cross-sectional shape of the notch 82 corresponds to the part of the circle of the carriage drive pin 75 shown in FIG. 11 that is surrounded by the dotted arc and the straight chord.
  • Carriage drive belt 74 It is a timing belt with many teeth for meshing over the entire circumference.
  • a through hole 81 through which the fixing pin 71 is inserted is formed in the upper portion of the carriage driving pin 75 with the center cutout portion 82 interposed therebetween in the axial direction.
  • the lower end of the through hole 8 1 is open to the notch 8 2.
  • the lower part of the carriage driving pin 75 with the center notch 82 interposed therebetween is engaged to allow the tip of the fixed pin 71 passing through the notch 82 to pass through.
  • a hole 83 is formed in the axial direction.
  • the carriage drive belt 74 When the carriage drive belt 74 is fitted to the notch 82 of the carriage drive pin 75, the length (travel direction) of the carriage drive belt 74 and the carriage The axis of the carriage drive pin 75 is perpendicular to the axis. Also, the bottom surface of the notch portion 82 is in contact with the outer peripheral surface of the carriage drive belt 74.
  • the fixing pin 71 is inserted into the through hole 81 formed in the carriage drive pin 75, and as shown in FIG. 11, the key engaging the notch 82 is inserted. Insert it into the recess between the teeth on the inside of the bridge drive belt 74 and then into the engagement hole 83. Thus, the carriage drive pins 75 are fixed to the carriage drive belts 4.
  • the fixing pin 71 is, as described above, connected to the inner teeth and the teeth of the four carriage driving belts 4. Between the ⁇ section. However, the carriage drive belt 74. It is driven by the teeth of the carriage drive pulley 72 engaging the recesses between the teeth on the inside. Accordingly, the carriage drive pulley 72 (and not shown) corresponding to the concave portion between the teeth inside the carriage drive belt 74 which is closed by the fixing pin 71. The teeth of the passive pulley must be cut off. Also, the carriage driving belt 74 makes one revolution and the carriage driving pulley 7 2
  • the number of teeth of 4 must be an integral multiple of the number of teeth of the carriage drive pulley 72 (and of the passive boolean).
  • the number of teeth of the carriage drive belt 74 is changed to the number of teeth of the carriage drive pulley 72 (and the passive pulley).
  • a design constraint of an integral multiple of the number is imposed, and a cumbersome operation of cutting one tooth of the carriage drive pulley 72 (and the passive pulley) is required.
  • the notch provided on the pulley side and the pin of the driving belt are fixed. It is necessary to match the fixed part and, which increases the man-hour for the installation work.
  • An object of the present invention is to provide a printer with a carriage drive There is no particular need to consider the ratio between the number of belt teeth and the number of carriage drive pulleys and passive pulleys. Provides an improved mounting structure of the carriage drive member to the carriage drive belt, which eliminates the need to apply additional force to the carriage drive belt
  • a carriage driving member fixed to a carriage driving belt is engaged with a carriage for mounting a print head, and In a printer that linearly moves the carriage by rotating the carriage drive belt, the carriage drive member moves the carriage drive belt relative to the carriage drive belt. It is fixed only between the belt and the outer surface without using the inner surface.
  • a mounting portion is provided at one place on the outer peripheral surface of the carriage driving belt, and the mounting portion is provided with a structure adapted to the above-described engaging portion on the carriage driving member side.
  • a belt-side engaging member is formed.
  • the mounting portion is a convex portion protruding outward from the belt.
  • the carriage driving member for attaching the carriage driving member to the carriage driving belt since the member for attaching the carriage driving member to the carriage driving belt does not protrude toward the inner peripheral surface side of the carriage driving belt, the carriage is driven. No structural restrictions are imposed on the drive of the carriage drive belt by the drive pulley.
  • FIG. 1 is a perspective view showing an outline of the overall structure of a printer to which the present invention is applied.
  • FIG. 2 is a perspective view showing the printer of FIG. 1 from which a frame for mounting a cassette, an ink ribbon cassette, and an upper frame have been removed.
  • FIG. 3 is a plan view of the printer of FIG. 2, showing a state where the carriage is at a left end position.
  • FIG. 4 is a perspective view showing details of a carriage and a carriage drive mechanism used in the printer of FIG.
  • FIG. 5 is a view for explaining a first embodiment of a mounting structure of a carriage drive member (pin) to a carriage drive belt, which is employed in the carriage drive mechanism of FIG. FIG.
  • FIG. 6 shows a state in which the carriage driving member is mounted on the carriage driving belt according to the mounting structure of the carriage driving member on the carriage driving belt described in FIG. It is a figure showing a state.
  • FIG. 7 is a diagram for explaining power transmission by a gear train in the printer of FIG.
  • FIG. 8 is a plan view of the printer of FIG. 2, showing a state where the carriage is at the right end position.
  • FIG. 9 is a view for explaining a second embodiment of the mounting structure of the carriage drive member to the carriage drive belt, which is employed in the carriage drive mechanism of FIG. is there.
  • FIG. 10 is an exploded perspective view showing a conventional example of a structure for attaching a carriage driving member to a carriage driving belt.
  • Fig. 11 shows that the carriage drive member is attached to the carriage drive belt by the mounting structure shown in Fig. 10, and that the carriage drive belt is attached to the carriage drive pulley.
  • FIG. 4 is a partial top view showing a state of turning around.
  • the outer shape of printer 1 is formed by body frame 2.
  • the main frame 2 has a cassette mounting frame 3 at the upper front, a paper feed section 8 at the rear, and an upper frame 5 at the middle upper.
  • An ink ribbon cassette 4 is mounted on the upper part of the force set mounting frame 3.
  • a printing section 6 (not shown in FIG. 1) is provided below the upper frame 5.
  • a platen plate 7 is provided behind the printing portion 6.
  • the paper feed unit 8 feeds the paper toward the printing unit 6.
  • FIG. 2 is a perspective view showing the printer 1 of FIG. 1 with the set mounting frame 3, the ink ribbon cassette 4, and the upper frame 5 removed.
  • the main body frame 2 includes a base frame 11 forming a bottom surface, and a left side frame 9 and a right side frame 10 protruding upward from a left end of the base frame 11.
  • Drive motor M 1 is located at the front center of base frame 1 1. Has been fixed.
  • the motor shaft 12 of the drive motor Ml extends laterally toward the right side frame 10, and a worm 13 is formed or fixed at the end thereof.
  • a gear train 14 is provided on the right side of the base frame 11.
  • the plurality of gears constituting the gear train 14 are arranged in substantially one row from the front to the rear, and the rotation of the worm 13 causes the rotation to be gradually transmitted from the front to the rear.
  • the gear train 14 will be described later.
  • a carriage shaft 15 is provided in a lateral direction between the left side frame 9 and the right side frame 10.
  • a carriage sub-shaft 16 is laterally provided between the left side frame 9 and the right side frame 10 above the center of the base frame 11 slightly forward.
  • the carriage shaft 15 and the carriage sub-shaft 16 are parallel to each other, and are also parallel to the surface of the base frame 11.
  • a platen plate 7 is installed between the left side frame 9 and the right side frame 10 in parallel with the carriage shaft 15. The surface of the platen plate 7 is almost perpendicular to the surface of the base frame 11.
  • the carriage shaft 15 passes through a through hole formed in the lower rear portion of the carriage 19.
  • the carriage sub-shaft 16 has its carriage 19 It penetrates through holes formed in the side portions. Therefore, the carriage 19 can move freely in the axial direction of the carriage shaft 15 while being supported by the carriage shaft 15 and the carriage sub-shaft 16 before and after that. it can.
  • the movement of the carriage 19 is controlled by a carriage drive mechanism 20 mounted on the base frame 11. The carriage drive mechanism 20 will be described later.
  • the carriage 19 has a print head 18 mounted thereon.
  • the print head 18 mounted on the carriage 19 has a head portion 18 a facing the platen portion 17.
  • the print head 18, the carriage 19 and the platen 17 constitute the print unit 6.
  • the print head 18 is prevented from deviating from the carriage 19 by the latch lever 19a (FIG. 4).
  • the axis of the first short axis 21 is the carriage shaft 15 and the carriage sub shaft 16.
  • the first short shaft 21 has a carriage driving gear group 22 formed with a carriage driving pulley 24 at the upper part and a driving gear 23 at the lower part. , Can be installed freely.
  • a pulley composed of a short axis is located at a position advanced a distance toward the left side frame 9 in parallel with the axis of the carriage shaft 15.
  • Axis 2 5 stands on base frame 11.
  • a driven pulley 26 is rotatably attached to the pulley shaft 25.
  • An endless drive belt 27 is wound between the carriage drive pulley 24 and the driven pulley 26, and is placed in a posture parallel to the surface of the base frame 11.
  • the drive belt 27 has a pin as a carriage drive member (hereinafter referred to as a carriage drive pin) 28, and its axis is perpendicular to the surface of the base frame 11. It is attached so that it is in a posture.
  • the mounting structure will be described later.
  • the carriage 19 has a through hole (engagement hole 29) on the right side to receive the carriage drive pin 28 inside, as shown in Fig. 2-Fig. 4. Have been.
  • the carriage 19 is reciprocated by engaging the carriage drive pin 28 with the engagement hole 29 and driving the drive belt 27.
  • the engagement 3 ⁇ 429 of the carriage 19 is such that the carriage drive pin 28 always engages with the engagement hole 29 while the drive belt 27 rotates. It is a long hole extending in the front and rear direction so that it can be inserted.
  • the carriage drive pulley 24, the driven pulley 26, the drive belt 27 and the carriage drive pin 28 constitute a carriage drive mechanism 20.
  • the drive belt 27 is a timing belt provided with a large number of teeth for engagement over the entire inner peripheral surface. In FIG. 4, the teeth on the inner peripheral surface of the belt are not shown.
  • a convex portion 30 protruding outward is formed at one location on the outer peripheral surface of the drive belt 27, a convex portion 30 protruding outward is formed.
  • a narrow portion 31 of a predetermined width is formed on the left and right sides of the base end portion (the portion near the outer peripheral surface of the belt 27) of the convex portion 30. Therefore, a vertical groove is formed between the constricted portion 31 of the convex portion and the outer peripheral surface of the drive belt 27.
  • the carriage drive pin 28 includes an insertion portion 32 and an engagement portion 34.
  • the insertion portion 32 has a form of a pin having a diameter capable of engaging with the engagement hole 29 of the carriage 19.
  • the engaging portion 34 has a structure in which an inverted U-shaped notch is formed in the center of the lower portion, and support legs 33 are formed on the left and right sides. Further, the pair of support legs 33 has a size corresponding to the size of the constriction 31 of the protrusion 30 of the drive belt 27.
  • the carriage drive pin 28 is placed in such a position that the insertion portion 32 is located upward and the engagement portion 34 is located downward, and the drive belt is then driven. It is placed almost directly above the convex part 30 of 27. Then, the carriage drive pin 28 is moved downward, and the inner edges of the left and right support legs 33 are fitted into the left and right necks 31 of the convex portion 30 of the drive belt 27. And push the carriage drive pin 28 further downward. Then, as shown in FIG. 6, the support leg 33 engages tightly with the constricted portion 31 of the convex portion 30, and The side surfaces of the legs 33 are in close contact with the outer peripheral surface of the drive belt 27.
  • the carriage drive pin 28 is firmly fixed to the drive belt 27.
  • the engagement of the support leg 33 with the constriction 31 of the convex portion 30 prevents the carriage drive pin 28 from being pulled out upward and inclined forward, backward, left and right. .
  • the carriage driving pin 28 has a pin-shaped insertion portion 60 having a diameter substantially equal to the diameter of the through hole 59, and a pin having a diameter slightly smaller than the diameter of the insertion portion. And an insertion part 32 of the shape.
  • the carriage drive pin 28 By inserting this insertion portion 60 into the through hole 59 of the convex portion 30 formed on the outer peripheral surface of the drive belt 27, the carriage drive pin 28 is driven. It is firmly attached to the belt. The engagement between the insertion portion 60 and the through hole 59 of the projection 30 allows the carriage driving pin 28 to be pulled out upward or to be inclined forward, backward, left, or right. Absent.
  • the drive belt 27 in the first example and the drive belt 27 in the second example is common in that a convex portion 30 protruding outward is formed integrally at one position on the outer peripheral surface. Therefore, a method of manufacturing the drive belt 27 having such a convex portion 30 will be described below. Will be explained.
  • the driving belt 37 is made of chloroprene rubber or urethane rubber, and firstly, a long base is manufactured by molding, and then the base is formed with a predetermined width in the axial direction. Obtained by cutting.
  • the center of the convex portion 30 is divided by the mold, so that the outer peripheral surface of the drive belt 37 has a convex portion 30 (the convex portion 30 shown in FIG.
  • the convex portion 30 can also be formed integrally.
  • the gear train 14 is attached to the support shaft 35, the first short shaft 21, the second short shaft 37, and the support shaft 39, which are erected on the right side of the base frame 11 in the front-rear direction substantially in a row. It consists of a set of gears.
  • a first transmission gear group 36 integrally formed with a large diameter gear 42 at a lower portion, a worm wheel 41 at an upper portion, and a small diameter gear 43 at an intermediate portion is rotatably attached to the support shaft 35.
  • the first short shaft 21 is rotatably mounted with a carriage drive gear group 22 having an upper portion formed with a carriage drive bulge 24 and a lower portion formed with a drive gear 23.
  • a second transmission gear 38 is rotatably attached to the second short shaft 37.
  • a paper feed drive mechanism 52 having a small bevel gear 54 at the upper part, a third transmission gear 40 at the lower part, and a ratchet 53 at the middle part is attached to the support shaft 39.
  • the worm 13 fixed to the motor shaft 12 of the drive motor Ml is a first worm rotatably mounted on the support shaft 35. It matches with the worm wheel part 4 1 of the transmission gear group 36.
  • the large-diameter gears 42 of the first transmission gear group 36 mesh with the drive gears 23 of the carriage drive gear group 22, and the drive gears 23 further form the second transmission gears 3.
  • the second transmission gear 38 further meshes with the third transmission gear 40 of the paper feed drive mechanism 52.
  • a shaft 45 is set up on the base frame 11 to the left of the support shaft 35, and the shaft 45 has a fourth transmission in which a small-diameter gear 48 is formed at the top and a large-diameter gear 47 is formed at the bottom.
  • Gear groups 46 are rotatably mounted.
  • the small-diameter gear 43 of the first transmission gear group 36 meshes with the large-diameter gear 47 of the fourth transmission gear group 46.
  • the small-diameter gear 48 of the first transmission gear group 36 meshes with the drive gear 50 constituting the ribbon feed gear group 49.
  • the ribbon feed gears 49 are formed integrally with a drive gear 50 at the lower part and a ribbon feed shaft 51 at the upper part, and are rotatably mounted on the ribbon feed shaft 51.
  • a panel clutch is provided between the third transmission gear 40 constituting the paper feed drive mechanism 52 and the ratchet wheel 53. Baneku When the latch is engaged, the ratchet wheel 53 and the small bevel gear 54 rotate integrally by the rotation of the third transmission gear 40. Further, when the rotation of the ratchet wheel 53 is prevented by a tongue (not shown) operated by a solenoid or the like, the spring clutch slips, and the third transmission gear 40 moves to the small bevel gear 53. The transmission of torque is interrupted.
  • the small bevel gear 54 further meshes with a large bevel gear 56 provided at the end of the paper feed roller shaft 55.
  • the paper feed roller shaft 55 is supported by the paper guide frame 57 so that its axis extends in the left-right direction of the printer 1.
  • a paper feed roll 58 is fixed in the middle of the paper feed roller shaft 55.
  • the paper guide frame 57 guides the paper toward the printing unit 6.
  • Carriage 19 reciprocates between the leftmost position shown in FIG. 3 and the rightmost position shown in FIG. When Carriage 19 is at the leftmost position, its left side is close to the inside of Left Side Frame 9. On the other hand, when the carriage 19 is at the rightmost position, the right side portion having the engagement hole 29 is close to the inside of the right side frame 10.
  • the motor shaft 12 of the drive motor M1 rotates clockwise as shown by the arrow A as shown in FIG.
  • the rotation of the motor shaft 12 is controlled by the worm 13, the worm wheel 41 of the first transmission gear group 36, the large-diameter gear 42, and the carriage drive gear group 22.
  • the drive gear 23 and the carriage drive pulley 24 are driven to rotate the carriage drive pulley 24 counterclockwise.
  • the drive belt 27 wound between the carriage drive pulley 24 and the driven pulley 26 by the counterclockwise rotation of the carriage drive pulley 24 moves the drive belt 27 in the direction of the arrow in FIG. (In the direction of arrow B in FIG. 3).
  • FIG. 3 shows a state where the drive pin 28 is at the leftmost position, that is, a state where the drive pin 28 is rotating on the left side of the driven pulley 26.
  • the mounting structure of the (pin) to the carriage drive belt (Figs. 5 and 6) is also the mounting structure of the carriage drive member (pin) to the carriage drive belt according to the second embodiment.
  • (Fig. 9) also has an outwardly projecting projection integrally formed at one location on the outer peripheral surface of the carriage drive belt, and the engagement portion that receives a part of the carriage drive member at the projection.
  • Belt-side engaging portion On the other hand, an engagement portion (carriage drive member-side engagement portion) having a shape adapted to the shape of the belt-side engagement portion is formed below the carriage drive member. Therefore, by engaging the carriage driving member side engaging portion of the carriage driving member with the belt side engaging portion of the convex portion formed on the outer periphery of the carriage driving belt.
  • the carriage drive member is attached to the carriage drive belt.
  • the convex portion is obtained by integral molding on the outer periphery of the carriage driving belt.
  • the carriage driving belt can be obtained.
  • a structure corresponding to the projection may be bonded to the outer peripheral surface.
  • the shape of the engagement portion of the carriage drive member on the carriage drive member side and the shape of the engagement portion of the protrusion on the outer periphery of the carriage drive belt on the belt side are respectively the first shape.
  • a vertical groove is formed on both sides of the convex portion on the outer periphery of the carriage driving belt, instead of the constriction 31, while the carriage is formed.
  • a flat engagement plate having a U-shaped recess that opens downward is fixed, and the inner edge of the recess of the engagement plate is raised by the protrusion of the carriage drive belt. You may make it fit in the longitudinal groove of a part.
  • the cross section of the lower portion 60 of the carriage driving member (pin) is made to be a rectangle instead of a circle (FIG. 5), and the carriage is adjusted accordingly.
  • the cross section of the through hole 59 of the projection 30 of the carriage drive belt may be a rectangle of the same size.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Transmission Devices (AREA)

Abstract

A pin (28) as a carriage driving member is engaged with a carriage on which a printing head is to be mounted, and a carriage driving belt (27) is turned, so that the carriage is moved reciprocatingly. A projection (30) is formed on a portion of an outer circumferential surface of the belt (27) so that the projection is integral with the belt. Support legs (33) provided under the pin (28) are inserted into hollow spaces defined by recessed portions (31), which are formed at a root section of the projection, of the same projection (30) and the outer circumferential surface of the belt (27). Consequently, the pin (28) is fixed to the belt (27). A structure for fixing the pin (28) does not project from an inner circumferential surface of the belt (27).

Description

明 細 書  Specification
プリ ンタにおけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆 動ベル 卜への取付構造  Attachment structure of carriage drive member to carriage drive belt in printer
技 術 分 野  Technical field
本発明は、 プリ ンタにおいて、 印字ヘッ ドを搭載する キヤ リ ッジに係合してキヤ リ ッジを往復移動するための キャ リ ッジ駆動部材を、 キャ リ ッジ駆動ベル トに取付け るための取付構造の改良に関する。  According to the present invention, in a printer, a carriage driving member for engaging a carriage on which a print head is mounted and reciprocating the carriage is attached to the carriage driving belt. The improvement of the mounting structure for mounting.
背 景 技 術  Background technology
プリ ンタにおいて、 キヤ リ ッジ駆動ベル 卜にキヤ リ ッ ジ駆動部材と してのピン （キャ リ ッジ駆動ピン） を固定 し、 そのピンをキャ リ ッジに係合させ、 キャ リ ッジ駆動 ベル トを回動させるこ とによ り印字へッ ドを搭載したキ ャ リ ッジをプラテン部に対して往復動させるこ とは、 例 えば、 特開平 7 — 1 4 9 0 2 3号に開示されているよう に、 周知である。  At the printer, a pin (carriage drive pin) as a carriage drive member is fixed to the carriage drive belt, the pin is engaged with the carriage, and the carriage is driven. Reciprocating the carriage equipped with the print head with respect to the platen portion by rotating the drive belt is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-149902. Well known, as disclosed in No. 3.
そこで、 特開平 7 — 1 4 9 0 2 3号に開示されたキヤ リ ッジ駆動ピンのキヤ リ ッジ駆動ベル 卜への取付構造に ついて図 1 0及び図 1 1 を参照して説明する。  Therefore, the mounting structure of the carriage drive pin to the carriage drive belt disclosed in Japanese Patent Application Laid-Open No. 7-149203 will be described with reference to FIGS. 10 and 11. .
キャ リ ッジ駆動ピン 7 5には、 図 1 0 に示すように、 軸心方向中央部に、 キヤ リ ッジ駆動ベル ト フ 4の幅にほ ぼ等しい軸心方向の幅をもった切欠部 8 2が形成されて いる。 切欠部 8 2の断面形状は、 図 1 1 に示すキヤ リ ツ ジ駆動ピン 7 5の円のうち、 点線の弧と直線の弦で囲ま れた部分に該当する。 キャ リ ッ ジ駆動ベル ト 7 4は、 内 周面の全周に亘つて嚙み合い用の多数の歯を備えたタイ ミ ングベル 卜である。 As shown in Fig. 10, the carriage drive pin 75 has a notch at the center in the axial direction with an axial width almost equal to the width of the carriage drive belt 4. A part 82 is formed. The cross-sectional shape of the notch 82 corresponds to the part of the circle of the carriage drive pin 75 shown in FIG. 11 that is surrounded by the dotted arc and the straight chord. Carriage drive belt 74 It is a timing belt with many teeth for meshing over the entire circumference.
キャ リ ッジ駆動ピン 7 5の、 中央の切欠部 8 2 をはさ んで上方の部分には、 固定ピン 7 1 を挿通させるための 揷通孔 8 1 が軸心方向に形成されている。 この揷通孔 8 1 の下端は切欠部 8 2 に開口 している。 また、 キヤ リ ツ ジ駆動ピン 7 5の、 中央の切欠部 8 2 をはさんで下方の 部分には、 切欠部 8 2 を通過した固定ピン 7 1 の先端部 を揷通させるための係合孔 8 3が軸心方向に形成されて いる。  A through hole 81 through which the fixing pin 71 is inserted is formed in the upper portion of the carriage driving pin 75 with the center cutout portion 82 interposed therebetween in the axial direction. The lower end of the through hole 8 1 is open to the notch 8 2. The lower part of the carriage driving pin 75 with the center notch 82 interposed therebetween is engaged to allow the tip of the fixed pin 71 passing through the notch 82 to pass through. A hole 83 is formed in the axial direction.
キヤ リ ッジ駆動ピン 7 5の切欠部 8 2 にキヤ り ッジ駆 動ベル ト 7 4 を嵌合した状態ではキャ リ ッジ駆動ベル ト 7 4の長さ方向 （走行方向） とキャ リ ッジ駆動ピン 7 5 の軸心方向とは直交する。 また、 切欠部 8 2の底面はキ ャ リ ッジ駆動ベル ト 7 4の外周面と接する。  When the carriage drive belt 74 is fitted to the notch 82 of the carriage drive pin 75, the length (travel direction) of the carriage drive belt 74 and the carriage The axis of the carriage drive pin 75 is perpendicular to the axis. Also, the bottom surface of the notch portion 82 is in contact with the outer peripheral surface of the carriage drive belt 74.
そこで、 固定ピン 7 1 をキャ リ ッジ駆動ピン 7 5 に形 成した揷通孔 8 1 に差し込み、 さ らに、 図 1 1 に示すよ うに、 切欠部 8 2に係合しているキヤ リ ッジ駆動ベル ト 7 4の内側の歯と歯との間の凹部に差し込み、 さ らに係 合孔 8 3に差し込む。 こ う してキャ リ ッジ駆動ピン 7 5 はキヤ リ ッジ駆動ベル トつ 4に固定される。  Therefore, the fixing pin 71 is inserted into the through hole 81 formed in the carriage drive pin 75, and as shown in FIG. 11, the key engaging the notch 82 is inserted. Insert it into the recess between the teeth on the inside of the bridge drive belt 74 and then into the engagement hole 83. Thus, the carriage drive pins 75 are fixed to the carriage drive belts 4.
このようなキヤ リ ッジ駆動ピンのキヤ リ ッジ駆動ベル 卜への取付構造では、 固定ピン 7 1 が、 上述のように、 キヤ リ ッジ駆動ベル トつ 4の内側の歯と歯との間の ω部 に差し込まれる。 しかし、 キャ リ ッジ駆動ベル ト 7 4は. その内側の歯と歯との間の凹部にキヤ リ ッジ駆動プーリ 7 2の歯部が係合するこ とによって、 駆動される。 した がって、 固定ピン 7 1 に塞がれる、 キャ リ ッジ駆動ベル ト 7 4の内側の歯と歯との間の凹部に対応するキヤ リ ッ ジ駆動プーリ 7 2 (及び図示しないが受動プーリ） の歯 は切リ欠いておかなけれならない。 また、 キヤ リ ッジ駆 動ベル 卜 7 4が 1 周 してまたキヤ リ ッジ駆動プーリ 7 2In such a mounting structure of the carriage driving pin to the carriage driving belt, the fixing pin 71 is, as described above, connected to the inner teeth and the teeth of the four carriage driving belts 4. Between the ω section. However, the carriage drive belt 74. It is driven by the teeth of the carriage drive pulley 72 engaging the recesses between the teeth on the inside. Accordingly, the carriage drive pulley 72 (and not shown) corresponding to the concave portion between the teeth inside the carriage drive belt 74 which is closed by the fixing pin 71. The teeth of the passive pulley must be cut off. Also, the carriage driving belt 74 makes one revolution and the carriage driving pulley 7 2
(及び受動プーリ） の周囲を回るとき、 固定ピン 7 1 が キャ リ ッジ駆動プーリ 7 2 (及び受動プーリ） の歯を欠 いた部分とまた係合するよう、 キャ リ ッジ駆動ベル ト 7 4の歯の数をキヤ り ッジ駆動プーリ 7 2 (及び受動ブー リ） の歯の数の整数倍にする必要がある。 When turning around (and the passive pulley) the carriage drive belt 7 so that the fixing pin 7 1 also engages the toothless part of the carriage drive pulley 7 2 (and the passive pulley). The number of teeth of 4 must be an integral multiple of the number of teeth of the carriage drive pulley 72 (and of the passive boolean).
以上のように、 図 1 0及び図 1 1 に示す従来例では、 キヤ リ ッジ駆動ベル ト 7 4の歯の数をキヤ リ ッジ駆動プ ーリ 7 2 (及び受動プーリ） の歯の数の整数倍にすると いう設計上の制約が課せられ、 また、 キャ リ ッジ駆動プ ーリ 7 2 (及び受動プーリ） の歯を 1 つ切り欠く という、 面倒な作業が必要となる。  As described above, in the conventional examples shown in FIGS. 10 and 11, the number of teeth of the carriage drive belt 74 is changed to the number of teeth of the carriage drive pulley 72 (and the passive pulley). A design constraint of an integral multiple of the number is imposed, and a cumbersome operation of cutting one tooth of the carriage drive pulley 72 (and the passive pulley) is required.
さ らに、 キヤ リ ッジ駆動ベル ト 7 4をキヤ リ ッジ駆動 プーリ 7 2及び従動プーリ （図示せず） に取り付ける際 に、 プーリ側に設けられた切欠部と駆動ベル トのピン固 定部と を合わせる必要があり、 取付作業の工数が増して しまう。  Further, when attaching the carriage driving belt 74 to the carriage driving pulley 72 and a driven pulley (not shown), the notch provided on the pulley side and the pin of the driving belt are fixed. It is necessary to match the fixed part and, which increases the man-hour for the installation work.
発 明 の 開 示  Disclosure of the invention
本発明の目的は、 プリ ンタにおいて、 キャ リ ッジ駆動 ベル 卜の歯の数とキヤ リ ッジ駆動プーリ及び受動プーリ の数との比を特に考慮する必要がな く、 また、 キヤ リ ツ ジ駆動プーリ 7 2及び受動プーリの歯の一部を特別に加 ェを施さなく てもよいようにした、 改良されたキヤ リ ツ ジ駆動部材のキヤ リ ッジ駆動ベル 卜への取付構造を提供An object of the present invention is to provide a printer with a carriage drive There is no particular need to consider the ratio between the number of belt teeth and the number of carriage drive pulleys and passive pulleys. Provides an improved mounting structure of the carriage drive member to the carriage drive belt, which eliminates the need to apply additional force to the carriage drive belt
~ る とに る。 ~
上記目的を達成するため、 本発明では、 キャ リ ッジ駆 動ベル トに固定されたキャ リ ッジ駆動部材を印字へッ ド を搭載するためのキャ リ ッジに係合して、 キャ リ ッジ駆 動ベル トを回動させることによ り、 上記キャ リ ッジを直 線運動させるプリ ンタにおいて、 キャ リ ッジ駆動部材が キヤ リ ッジ駆動ベル 卜に対して、 ベル ト内周面を用いる ことな く ベル 卜外周面との間のみ固定される。  In order to achieve the above object, in the present invention, a carriage driving member fixed to a carriage driving belt is engaged with a carriage for mounting a print head, and In a printer that linearly moves the carriage by rotating the carriage drive belt, the carriage drive member moves the carriage drive belt relative to the carriage drive belt. It is fixed only between the belt and the outer surface without using the inner surface.
なお、 好ま し く は、 キャ リ ッジ駆動ベル トの外周面 1 力所には取付部を設け、 その取付部に上記にキャ リ ッジ 駆動部材側係合部に適応する構造を備えたベル ト側係合 部材を形成してある。  Preferably, a mounting portion is provided at one place on the outer peripheral surface of the carriage driving belt, and the mounting portion is provided with a structure adapted to the above-described engaging portion on the carriage driving member side. A belt-side engaging member is formed.
また、 好ま し く は、 取付部がベル ト外方に突出する凸 部である。  Also, preferably, the mounting portion is a convex portion protruding outward from the belt.
本発明によれば、 キヤ リ ッジ駆動部材をキヤ リ ッジ駆 動ベル 卜に取り付けるための部材がキヤ リ ッジ駆動ベル 卜の内周面側に突出することがないので、 キヤ リ ッジ駆 動プーリ によるキヤ リ ッジ駆動ベル 卜の駆動には何等構 造上の制限が課せられない。  According to the present invention, since the member for attaching the carriage driving member to the carriage driving belt does not protrude toward the inner peripheral surface side of the carriage driving belt, the carriage is driven. No structural restrictions are imposed on the drive of the carriage drive belt by the drive pulley.
図 面 の 簡 単 な 説 明 図 1 は、 本発明が適用されるプリ ンタの全体的構造の 概要を示す斜視図である。 Brief explanation of drawings FIG. 1 is a perspective view showing an outline of the overall structure of a printer to which the present invention is applied.
図 2 は、 図 1 のプリ ンタから、 カセッ ト装着用フ レー ム、 イ ンク リ ボンカセッ ト及びアッパーフ レームを取り 除いて示す斜視図である。  FIG. 2 is a perspective view showing the printer of FIG. 1 from which a frame for mounting a cassette, an ink ribbon cassette, and an upper frame have been removed.
図 3 は、 図 2のプリ ンタの平面図であり、 キャ リ ッジ が左端位置にある状態を示す。  FIG. 3 is a plan view of the printer of FIG. 2, showing a state where the carriage is at a left end position.
図 4は、 図 3のプリ ンタで使用されているキャ リ ッジ 及びキヤ リ ッジ駆動機構の詳細を示す斜視図である。  FIG. 4 is a perspective view showing details of a carriage and a carriage drive mechanism used in the printer of FIG.
図 5 は、 図 4のキャ リ ッジ駆動機構で採用されている、 キャ リ ッジ駆動部材 （ピン） のキャ リ ッジ駆動ベル トへ の取付構造の第 1 実施例を説明するための図である。  FIG. 5 is a view for explaining a first embodiment of a mounting structure of a carriage drive member (pin) to a carriage drive belt, which is employed in the carriage drive mechanism of FIG. FIG.
図 6 は、 図 5 で説明する、 キャ リ ッジ駆動部材のキヤ リ ッジ駆動ベル トへの取付構造にしたがって、 キヤ リ ツ ジ駆動部材がキヤ リ ッジ駆動ベル 卜に取り付けられた状 態を示す図である。  FIG. 6 shows a state in which the carriage driving member is mounted on the carriage driving belt according to the mounting structure of the carriage driving member on the carriage driving belt described in FIG. It is a figure showing a state.
図 7 は、 図 3のプリ ンタにおける歯車列による動力の 伝達を説明するための図である。  FIG. 7 is a diagram for explaining power transmission by a gear train in the printer of FIG.
図 8 は、 図 2のプリ ンタの平面図であり、 キャ リ ッジ が右端位置にある状態を示す。  FIG. 8 is a plan view of the printer of FIG. 2, showing a state where the carriage is at the right end position.
図 9は、 図 4のキヤ リ ッジ駆動機構で採用されている、 キヤ リ ッジ駆動部材のキヤ リ ッジ駆動ベル トへの取付構 造の第 2実施例を説明するための図である。  FIG. 9 is a view for explaining a second embodiment of the mounting structure of the carriage drive member to the carriage drive belt, which is employed in the carriage drive mechanism of FIG. is there.
図 1 0は、 キャ リ ッジ駆動部材のキャ リ ッジ駆動ベル 卜への取付構造の従来例を示す分解斜視図である。 図 1 1 は、 図 1 0の取付構造によ りキャ リ ッジ駆動部 材がキャ リ ッジ駆動ベル トに取り付けられて、 そのキヤ リ ッジ駆動ベル 卜がキヤ リ ッジ駆動プーリの周 リ をまわ つている状態を示す部分上面図である。 FIG. 10 is an exploded perspective view showing a conventional example of a structure for attaching a carriage driving member to a carriage driving belt. Fig. 11 shows that the carriage drive member is attached to the carriage drive belt by the mounting structure shown in Fig. 10, and that the carriage drive belt is attached to the carriage drive pulley. FIG. 4 is a partial top view showing a state of turning around.
発明 を 実施す る た め の 最 良の 形態  BEST MODE FOR CARRYING OUT THE INVENTION
まず、 プリ ンタの 1 の全体的構造の概要について図 1 を参照して説明する。  First, an outline of the overall structure of the printer 1 will be described with reference to FIG.
プリ ンタ 1 の外形は本体フ レーム 2によ り形成される。 その本体フ レーム 2 には、 前方上部にカセッ ト装着用フ レーム 3が、 後方に用紙送り部 8が、 また、 中間の上部 にアッパーフ レーム 5が、 それぞれ装着されている。 力 セッ ト装着用フ レーム 3の上部にはイ ンク リボンカセッ ト 4が装着されている。 アッパーフ レーム 5の下側には 印字部 6 (図 1 には示されない） が配設されている。 印 字部 6の後側にはプラテン板 7が配設されている。 用紙 送り部 8は用紙を印字部 6に向けて送り込む。  The outer shape of printer 1 is formed by body frame 2. The main frame 2 has a cassette mounting frame 3 at the upper front, a paper feed section 8 at the rear, and an upper frame 5 at the middle upper. An ink ribbon cassette 4 is mounted on the upper part of the force set mounting frame 3. A printing section 6 (not shown in FIG. 1) is provided below the upper frame 5. A platen plate 7 is provided behind the printing portion 6. The paper feed unit 8 feeds the paper toward the printing unit 6.
次にプリ ンタ 1 の内部構造について図 2 を参照して説 明する。  Next, the internal structure of the printer 1 will be described with reference to FIG.
図 2は、 図 1 のプリ ンタ 1 からセッ 卜装着用フ レーム 3、 イ ンク リボンカセッ ト 4及びアッパーフ レーム 5 を 取り除いて示した斜視図である。 本体フ レーム 2は、 底 面を形成するベースフ レーム 1 1 と該ベースフ レーム 1 1 の左お端部から上方に突き出た左サイ ドフ レーム 9及 び右サイ ドフ レーム 1 0 を含む。  FIG. 2 is a perspective view showing the printer 1 of FIG. 1 with the set mounting frame 3, the ink ribbon cassette 4, and the upper frame 5 removed. The main body frame 2 includes a base frame 11 forming a bottom surface, and a left side frame 9 and a right side frame 10 protruding upward from a left end of the base frame 11.
ベースフ レーム 1 1 の前方中央部には駆動モータ M 1 が固定されている。 駆動モータ M l のモータ軸 1 2 は右 サイ ドフ レーム 1 0 に向かって横方向に延び、 その先端 部にはウォーム 1 3が形成または固着されている。 ベー スフ レーム 1 1 の右側部には歯車列 1 4が配設されてい る。 この歯車列 1 4 を構成する複数の歯車は、 前方から 後方に向けてほぼ 1 列に並び、 ウォーム 1 3の回転によ つて回転は前方から後方の歯車に徐々に伝達される。 こ の歯車列 1 4については後述する。 Drive motor M 1 is located at the front center of base frame 1 1. Has been fixed. The motor shaft 12 of the drive motor Ml extends laterally toward the right side frame 10, and a worm 13 is formed or fixed at the end thereof. A gear train 14 is provided on the right side of the base frame 11. The plurality of gears constituting the gear train 14 are arranged in substantially one row from the front to the rear, and the rotation of the worm 13 causes the rotation to be gradually transmitted from the front to the rear. The gear train 14 will be described later.
ベースフ レーム 1 1 の中央やや後方寄りの上方には、 左サイ ドフ レーム 9 と右サイ ドフ レーム 1 0 との間にキ ャ リ ッジシャ フ ト 1 5が横方向に架設されている。 また、 ベースフ レーム 1 1 の中央やや前方寄りの上方には、 左 サイ ドフ レーム 9 と右サイ ドフ レーム 1 0 との間にキヤ リ ッジサブシャフ ト 1 6が横方向に架設されている。 こ れらキャ リ ッジシャフ ト 1 5 とキャ リ ッジサブシャフ ト 1 6 とは平行であり、 かつベースフ レーム 1 1 の面とも 平行である。  At a position slightly above the center of the base frame 11, a carriage shaft 15 is provided in a lateral direction between the left side frame 9 and the right side frame 10. In addition, a carriage sub-shaft 16 is laterally provided between the left side frame 9 and the right side frame 10 above the center of the base frame 11 slightly forward. The carriage shaft 15 and the carriage sub-shaft 16 are parallel to each other, and are also parallel to the surface of the base frame 11.
さ らに、 キャ リ ッジシャフ ト 1 5の後方には、 キヤ リ ッジシャフ ト 1 5 と平行に、 左サイ ドフ レーム 9 と右サ ィ ドフ レーム 1 0 との間にプラテン板 7が架設される。 プラテン板 7の面はべ一スフ レーム 1 1 の面に対してほ ぼ垂直である。  Further, behind the carriage shaft 15, a platen plate 7 is installed between the left side frame 9 and the right side frame 10 in parallel with the carriage shaft 15. The surface of the platen plate 7 is almost perpendicular to the surface of the base frame 11.
キャ リ ッジシャフ ト 1 5は、 キャ リ ッジ 1 9の後方下 側部分に形成された貫通孔を貫通している。 一方、 キヤ リ ッジサブシャフ ト 1 6 は、 そのキャ リ ッジ 1 9前方下 側部分に形成された貫通孔を貫通している。 したがって、 キャ リ ッジ 1 9はその前後をキャ リ ッジシャフ ト 1 5及 びキャ リ ッジサブシャフ ト 1 6 とに支持されながら、 キ ャ リ ッジシャフ ト 1 5の軸心方向に自由に移動すること ができる。 このキャ リ ッジ 1 9の移動は、 ベースフ レー ム 1 1 上に取り付けられたキヤ リ ッジ駆動機構 2 0によ リ制御される。 このキヤ リ ッジ駆動機構 2 0については 後述する。 The carriage shaft 15 passes through a through hole formed in the lower rear portion of the carriage 19. On the other hand, the carriage sub-shaft 16 has its carriage 19 It penetrates through holes formed in the side portions. Therefore, the carriage 19 can move freely in the axial direction of the carriage shaft 15 while being supported by the carriage shaft 15 and the carriage sub-shaft 16 before and after that. it can. The movement of the carriage 19 is controlled by a carriage drive mechanism 20 mounted on the base frame 11. The carriage drive mechanism 20 will be described later.
キャ リ ッジ 1 9には印字ヘッ ド 1 8が搭載される。 キ ャ リ ッジ 1 9に搭載された印字ヘッ ド 1 8は、 そのへッ ド部 1 8 aがプラテン部 1 7 に対面する。 印字ヘッ ド 1 8、 キャ リ ッジ 1 9及びプラテン部 1 7で印字部 6 を構 成する。 なお、 印字ヘッ ド 1 8がキャ リ ッジ 1 9からは ずれるのを掛止レバー 1 9 a (図 4 ) が防止している。  The carriage 19 has a print head 18 mounted thereon. The print head 18 mounted on the carriage 19 has a head portion 18 a facing the platen portion 17. The print head 18, the carriage 19 and the platen 17 constitute the print unit 6. The print head 18 is prevented from deviating from the carriage 19 by the latch lever 19a (FIG. 4).
次に、 キャ リ ッジ駆動機構 2 0について図 3及び図 4 を参照して説明する。  Next, the carriage drive mechanism 20 will be described with reference to FIGS.
ベースフ レーム 1 1 の右側部分には、 第 "！ 短軸 2 1 が立 設されている。 第 1 短軸 2 1 の軸心は、 キャ リ ッジシャ フ ト 1 5 とキャ リ ッジサブシャフ ト 1 6 との間を通過す る。 第 1 短軸 2 1 には、 上部にキャ リ ッジ駆動プーリ 2 4、 下部に駆動歯車 2 3がー体形成されたキャ リ ッジ駆 動歯車群 2 2が、 回転自在に取り付けられる。 On the right side of the base frame 11, a "! Short axis 21" is erected. The axis of the first short axis 21 is the carriage shaft 15 and the carriage sub shaft 16. The first short shaft 21 has a carriage driving gear group 22 formed with a carriage driving pulley 24 at the upper part and a driving gear 23 at the lower part. , Can be installed freely.
さ らに、 この第 1 短軸 2 1 の位置からにキャ リ ッジシ ャフ ト 1 5の軸心方向と平行に左サイ ドフ レーム 9に向 かってある距離進んだ位置に、 短軸からなるプーリ軸 2 5がべ一スフ レーム 1 1 に立設されている。 このプーリ 軸 2 5 には従動プーリ 2 6が回転自在に取り付けられて いる。 In addition, from the position of the first short axis 21, a pulley composed of a short axis is located at a position advanced a distance toward the left side frame 9 in parallel with the axis of the carriage shaft 15. Axis 2 5 stands on base frame 11. A driven pulley 26 is rotatably attached to the pulley shaft 25.
これらキヤ り ッジ駆動プーリ 2 4 と従動プーリ 2 6 と の間には、 無端の駆動ベル 卜 2 7が巻き掛けられ、 ベー スフ レーム 1 1 の面と平行な姿勢におかれる。 駆動ベル 卜 2 7 にはキャ リ ッジ駆動部材と してのピン （以下、 こ のピンをキャ リ ッジ駆動ピンという） 2 8が、 その軸心 がベースフ レーム 1 1 の面に直交する姿勢となるよ うに、 取り付けられる。 その取付構造については後述する。  An endless drive belt 27 is wound between the carriage drive pulley 24 and the driven pulley 26, and is placed in a posture parallel to the surface of the base frame 11. The drive belt 27 has a pin as a carriage drive member (hereinafter referred to as a carriage drive pin) 28, and its axis is perpendicular to the surface of the base frame 11. It is attached so that it is in a posture. The mounting structure will be described later.
—方、 キャ リ ッジ 1 9は、 その右側部分に、 図 2 —図 4に示すように、 キヤ リ ッジ駆動ピン 2 8 を内部に受け 入れる貫通孔 （係合孔 2 9 ) が形成されている。 キヤ リ ッジ 1 9の往復移動は、 その係合孔 2 9 にキャ リ ッジ駆 動ピン 2 8 を係合して、 駆動ベル 卜 2 7 を駆動すること によ り行われる。 なお、 キャ リ ッ ジ 1 9の係合 ¾ 2 9は, 駆動ベル ト 2 7がー周している間、 キヤ リ ッジ駆動ピン 2 8が常にこの係合孔 2 9に係合しているこ とができる ように、 前後方向に延びた長孔となっている。  On the other hand, the carriage 19 has a through hole (engagement hole 29) on the right side to receive the carriage drive pin 28 inside, as shown in Fig. 2-Fig. 4. Have been. The carriage 19 is reciprocated by engaging the carriage drive pin 28 with the engagement hole 29 and driving the drive belt 27. The engagement ¾29 of the carriage 19 is such that the carriage drive pin 28 always engages with the engagement hole 29 while the drive belt 27 rotates. It is a long hole extending in the front and rear direction so that it can be inserted.
キャ リ ッジ駆動プーリ 2 4、 従動プーリ 2 6、 駆動べ ル ト 2 7及びキヤ リ ッジ駆動ピン 2 8 によ りキヤ リ ッジ 駆動機構 2 0が構成される。  The carriage drive pulley 24, the driven pulley 26, the drive belt 27 and the carriage drive pin 28 constitute a carriage drive mechanism 20.
次にこの駆動ベル ト 2 7にキヤ リ ッジ駆動ピン 2 8 を 取り付けるための構造のの第 1 の例を図 5及び図 6 を参 照して説明する。 駆動ベル ト 2 7は、 内周面の全周に亘つて嚙み合い用 の多数の歯を備えたタイ ミ ングベル トである。 なお、 図 4ではベル ト内周面の歯は図示を省略してある。 駆動べ ル ト 2 7の外周面の一箇所には外方に突出する凸部 3 0 がー体形成されている。 この凸部 3 0の基端部 （ベル ト 2 7外周面に近い部分） にはその左右に所定幅のく びれ 部 3 1 が形成されている。 したがって凸部のく びれ部 3 1 と駆動ベル ト 2 7の外周面とで縦溝が形成される。 一方、 キャ リ ッジ駆動ピン 2 8 は、 差し込み部 3 2 と 係合部 3 4 とから成る。 差し込み部 3 2は、 キャ リ ッジ 1 9の係合孔 2 9に係合し得る直径をもったピンの形態 を備えている。 また、 係合部 3 4は、 その下部中央に逆 U字形の切欠部を形成してその左右に支持脚 3 3 を形成 した構造を備えている。 さ らに、 これら 1 対の支持脚 3 3は、 駆動ベル ト 2 7 の凸部 3 0のく びれ部 3 1 の寸法 に対応した寸法を備えている。 Next, a first example of a structure for attaching the carriage drive pin 28 to the drive belt 27 will be described with reference to FIGS. The drive belt 27 is a timing belt provided with a large number of teeth for engagement over the entire inner peripheral surface. In FIG. 4, the teeth on the inner peripheral surface of the belt are not shown. At one location on the outer peripheral surface of the drive belt 27, a convex portion 30 protruding outward is formed. A narrow portion 31 of a predetermined width is formed on the left and right sides of the base end portion (the portion near the outer peripheral surface of the belt 27) of the convex portion 30. Therefore, a vertical groove is formed between the constricted portion 31 of the convex portion and the outer peripheral surface of the drive belt 27. On the other hand, the carriage drive pin 28 includes an insertion portion 32 and an engagement portion 34. The insertion portion 32 has a form of a pin having a diameter capable of engaging with the engagement hole 29 of the carriage 19. The engaging portion 34 has a structure in which an inverted U-shaped notch is formed in the center of the lower portion, and support legs 33 are formed on the left and right sides. Further, the pair of support legs 33 has a size corresponding to the size of the constriction 31 of the protrusion 30 of the drive belt 27.
そこで、 図 5 に示すよ うに、 まず、 キャ リ ッジ駆動ピ ン 2 8 を、 その差し込み部 3 2が上方に、 また係合部 3 4が下方になるような姿勢にして、 駆動ベル ト 2 7の凸 部 3 0のほぼ真上に置く。 それから、 キャ リ ッジ駆動ピ ン 2 8 を下方に動かして、 その左右の支持脚 3 3の内側 縁を駆動ベル ト 2 7の凸部 3 0の左右のく びれ部 3 1 に 嵌合させた状態にして、 キャ リ ッジ駆動ピン 2 8 をさ ら に下方に押し込む。 すると、 図 6 に示すように、 支持脚 3 3 は凸部 3 0のく びれ部 3 1 にしつかり と係合し、 支 持脚 3 3の側面は駆動ベル 卜 2 7の外周面と密着する。 その結果、 キャ リ ッジ駆動ピン 2 8 は駆動ベル ト 2 7 に しっかり と固定された状態と なる。 この支持脚 3 3 と凸 部 3 0の く びれ部 3 1 との係合によ り、 キャ リ ッ ジ駆動 ピン 2 8 は、 上方に抜ける こ と も、 前後左右に傾斜する こ と もない。 Therefore, as shown in FIG. 5, first, the carriage drive pin 28 is placed in such a position that the insertion portion 32 is located upward and the engagement portion 34 is located downward, and the drive belt is then driven. It is placed almost directly above the convex part 30 of 27. Then, the carriage drive pin 28 is moved downward, and the inner edges of the left and right support legs 33 are fitted into the left and right necks 31 of the convex portion 30 of the drive belt 27. And push the carriage drive pin 28 further downward. Then, as shown in FIG. 6, the support leg 33 engages tightly with the constricted portion 31 of the convex portion 30, and The side surfaces of the legs 33 are in close contact with the outer peripheral surface of the drive belt 27. As a result, the carriage drive pin 28 is firmly fixed to the drive belt 27. The engagement of the support leg 33 with the constriction 31 of the convex portion 30 prevents the carriage drive pin 28 from being pulled out upward and inclined forward, backward, left and right. .
さ らに、 駆動ベル ト 2 7 にキャ リ ッ ジ駆動ピン 2 8 を 取り付けるための構造のの第 2 の例を図 9 を参照 して説 明する。  Further, a second example of a structure for attaching the carriage drive pin 28 to the drive belt 27 will be described with reference to FIG.
駆動ベル ト 2 7 の外周面の一箇所には外方に突出する 凸部 3 0がー体形成されている。 この凸部 3 0 には縦方 向に貫通孔 5 9が形成されている。 一方、 キャ リ ッ ジ駆 動ピン 2 8 は、 その貫通孔 5 9の直径と ほぼ等 しい直径 をもつ ピン状の揷入部 6 0 と、 該揷入部の直径よ り やや 小さ い直径をもつ ピン状の差 し込み部 3 2 とから成る。  At one location on the outer peripheral surface of the drive belt 27, a convex portion 30 protruding outward is formed. A through hole 59 is formed in the convex portion 30 in the vertical direction. On the other hand, the carriage driving pin 28 has a pin-shaped insertion portion 60 having a diameter substantially equal to the diameter of the through hole 59, and a pin having a diameter slightly smaller than the diameter of the insertion portion. And an insertion part 32 of the shape.
この揷入部 6 0 を、 駆動ベル ト 2 7 の外周面に形成さ れた凸部 3 0の貫通孔 5 9 に圧入する こ と によ って、 キ ャ リ ッ ジ駆動ピン 2 8 は駆動ベル トに し っか り と取 り付 けられた状態となる。 この揷入部 6 0 と凸部 3 0の貫通 孔 5 9 との係合によ り、 キャ リ ッ ジ駆動ピン 2 8 は、 上 方に抜ける こ と も、 前後左おに傾斜する こ と もない。  By inserting this insertion portion 60 into the through hole 59 of the convex portion 30 formed on the outer peripheral surface of the drive belt 27, the carriage drive pin 28 is driven. It is firmly attached to the belt. The engagement between the insertion portion 60 and the through hole 59 of the projection 30 allows the carriage driving pin 28 to be pulled out upward or to be inclined forward, backward, left, or right. Absent.
以上、 第 1 の例及び第 2 の例での駆動ベル ト 2 7 は、 その外周面の一箇所に外方に突出する凸部 3 0 を一体形 成したと いう 点で共通している。 そこで、 以下にこのよ うな凸部 3 0 を有する駆動ベル ト 2 7 の製造方法につい て説明する。 As described above, the drive belt 27 in the first example and the drive belt 27 in the second example is common in that a convex portion 30 protruding outward is formed integrally at one position on the outer peripheral surface. Therefore, a method of manufacturing the drive belt 27 having such a convex portion 30 will be described below. Will be explained.
駆動ベル ト 3 7は、 ク ロ ロプレンゴムまたはウ レタ ン ゴムを材料にして、 金型成形によ り まず長尺の基体を製 作し、 次にこの基体れを軸方向に所定の幅寸法で切断す ることによ り得られる。 なお、 金型成形に際して、 凸部 3 0の中央を金型の割り とすることで、 駆動ベル ト 3 7 の外周面に凸部 3 0 (図 5に示す凸部 3 0でも図 9に示 す凸部 3 0でも） を一体に形成することができる。  The driving belt 37 is made of chloroprene rubber or urethane rubber, and firstly, a long base is manufactured by molding, and then the base is formed with a predetermined width in the axial direction. Obtained by cutting. When the mold is formed, the center of the convex portion 30 is divided by the mold, so that the outer peripheral surface of the drive belt 37 has a convex portion 30 (the convex portion 30 shown in FIG. The convex portion 30 can also be formed integrally.
次に、 ベースフ レーム 1 1 の右側部に配設されている 歯車列 1 4について図 7 を参照して説明する。  Next, the gear train 14 disposed on the right side of the base frame 11 will be described with reference to FIG.
歯車列 1 4は、 ベースフ レーム 1 1 の右側部に前後方 向ほぼ一列に立設された支軸 3 5、 第 1 短軸 2 1、 第 2 短軸 3 7及び支軸 3 9にそれぞれ取り付けられた歯車群 から構成される。 支軸 3 5には、 下部に大径歯車 4 2、 上部にウォームホイール 4 1、 中間部に小径歯車 4 3 を 一体形成した第 1 伝達歯車群 3 6が回転自在に取り付け られる。 第 1 短軸 2 1 には、 上部にキャ リ ッジ駆動ブー リ 2 4、 下部に駆動歯車 2 3がー体形成されたキヤ リ ッ ジ駆動歯車群 2 2が回転自在に取り付けられる。 第 2短 軸 3 7 には第 2伝達歯車 3 8が回転自在に取り付けられ る。 支軸 3 9には上部に小傘歯車 5 4、 下部に第 3伝達 歯車 4 0、 中間部に爪車 5 3 を設けた紙送り駆動機構 5 2が取リ付けられる。  The gear train 14 is attached to the support shaft 35, the first short shaft 21, the second short shaft 37, and the support shaft 39, which are erected on the right side of the base frame 11 in the front-rear direction substantially in a row. It consists of a set of gears. A first transmission gear group 36 integrally formed with a large diameter gear 42 at a lower portion, a worm wheel 41 at an upper portion, and a small diameter gear 43 at an intermediate portion is rotatably attached to the support shaft 35. The first short shaft 21 is rotatably mounted with a carriage drive gear group 22 having an upper portion formed with a carriage drive bulge 24 and a lower portion formed with a drive gear 23. A second transmission gear 38 is rotatably attached to the second short shaft 37. A paper feed drive mechanism 52 having a small bevel gear 54 at the upper part, a third transmission gear 40 at the lower part, and a ratchet 53 at the middle part is attached to the support shaft 39.
駆動モータ M l のモータ軸 1 2に固着されたウォーム 1 3は、 支軸 3 5に回転自在に取り付けられている第 1 伝達歯車群 3 6のウォームホイール部 4 1 と嚙合ってい る。 また、 第 1 伝達歯車群 3 6の大径歯車 4 2は、 キヤ リ ッジ駆動歯車群 2 2の駆動歯車 2 3 と喘み合い、 この 駆動歯車 2 3はさ らに第 2伝達歯車 3 8 と嚙み合い、 第 2伝達歯車 3 8 はさ らに紙送り駆動機構 5 2の第 3伝達 歯車 4 0 と嚙み合っている。 The worm 13 fixed to the motor shaft 12 of the drive motor Ml is a first worm rotatably mounted on the support shaft 35. It matches with the worm wheel part 4 1 of the transmission gear group 36. The large-diameter gears 42 of the first transmission gear group 36 mesh with the drive gears 23 of the carriage drive gear group 22, and the drive gears 23 further form the second transmission gears 3. 8, the second transmission gear 38 further meshes with the third transmission gear 40 of the paper feed drive mechanism 52.
次に、 第 1 伝達歯車群 3 6の小径歯車 4 3がリボン送 リ機構に動力を分岐して伝達していること を図 7 を参照 して説明する。  Next, the fact that the small-diameter gear 43 of the first transmission gear group 36 branches and transmits power to the ribbon feeding mechanism will be described with reference to FIG.
支軸 3 5の左方には軸 4 5がベースフ レーム 1 1 に立 設され、 その軸 4 5 には、 上部に小径歯車 4 8、 下部に 大径歯車 4 7 を一体形成した第 4伝達歯車群 4 6が回転 自在に取り付けられている。 そ して、 第 1 伝達歯車群 3 6の小径歯車 4 3は第 4伝達歯車群 4 6の大径歯車 4 7 と嚙み合っている。 一方、 第 1 伝達歯車群 3 6の小径歯 車 4 8 は、 リ ボン送り歯車群 4 9 を構成する駆動歯車 5 0 と嚙み合っている。 なお、 このリボン送り歯車 4 9群 は下部に駆動歯車 5 0、 上部にリ ボン送り軸 5 1 を一体 に形成したもので、 リ ボン送り軸 5 1 に回転自在に取り 付けられる。  A shaft 45 is set up on the base frame 11 to the left of the support shaft 35, and the shaft 45 has a fourth transmission in which a small-diameter gear 48 is formed at the top and a large-diameter gear 47 is formed at the bottom. Gear groups 46 are rotatably mounted. The small-diameter gear 43 of the first transmission gear group 36 meshes with the large-diameter gear 47 of the fourth transmission gear group 46. On the other hand, the small-diameter gear 48 of the first transmission gear group 36 meshes with the drive gear 50 constituting the ribbon feed gear group 49. The ribbon feed gears 49 are formed integrally with a drive gear 50 at the lower part and a ribbon feed shaft 51 at the upper part, and are rotatably mounted on the ribbon feed shaft 51.
次に、 第 3伝達歯車 4 0の回転によって用紙送り部 8 の紙送り機構 5 2 へ動力が伝達されるこ とを図 7 を参照 して説明する。  Next, how power is transmitted to the paper feed mechanism 52 of the paper feed unit 8 by rotation of the third transmission gear 40 will be described with reference to FIG.
紙送り駆動機構 5 2 を構成する第 3伝達歯車 4 0 と爪 車 5 3 との間にパネクラッチが設けられている。 バネク ラッチが入っていると、 第 3伝達歯車 4 0の回転によ り、 爪車 5 3 と小傘歯車 5 4 とは一体に回転する。 また、 ソ レノ ィ ド等で作動されるス トツバ （図示せず） によって 爪車 5 3の回転を阻止すると、 バネクラッチに滑り を生 じ、 第 3伝達歯車 4 0から小傘歯車 5 3への回転力伝達 が遮断される。 A panel clutch is provided between the third transmission gear 40 constituting the paper feed drive mechanism 52 and the ratchet wheel 53. Baneku When the latch is engaged, the ratchet wheel 53 and the small bevel gear 54 rotate integrally by the rotation of the third transmission gear 40. Further, when the rotation of the ratchet wheel 53 is prevented by a tongue (not shown) operated by a solenoid or the like, the spring clutch slips, and the third transmission gear 40 moves to the small bevel gear 53. The transmission of torque is interrupted.
この小傘歯車 5 4はさ らに紙送り ローラ軸 5 5の端部 に設けた大傘歯車 5 6 と嚙み合っている。 紙送り ローラ 軸 5 5 は、 用紙ガイ ドフ レーム 5 7 に、 その軸心がプリ ンタ 1 の左右方向に延びるように、 支持される。 この紙 送り ローラ軸 5 5の中間には紙送り ロール 5 8が固定さ れている。 用紙ガイ ドフ レーム 5 7 は用紙を印字部 6に 向けて案内する。  The small bevel gear 54 further meshes with a large bevel gear 56 provided at the end of the paper feed roller shaft 55. The paper feed roller shaft 55 is supported by the paper guide frame 57 so that its axis extends in the left-right direction of the printer 1. A paper feed roll 58 is fixed in the middle of the paper feed roller shaft 55. The paper guide frame 57 guides the paper toward the printing unit 6.
次にキヤ リ ッジの往復動作について図 3、 図 7及び図 8 を参照して説明する。  Next, the reciprocating operation of the carriage will be described with reference to FIGS. 3, 7, and 8. FIG.
キャ リ ッジ 1 9は図 3 で示す最も左の位置から図 8で 示す最も右の位置までの間を往復動する。 キャ リ ッジ 1 9が最も左の位置にあるときは、 その左側部は左サイ ド フ レーム 9の内側に近接する。 一方、 キャ リ ッジ 1 9が 最も右の位置にあるときは、 係合孔 2 9 を有するその右 側部分が右サイ ドフ レーム 1 0の内側に近接する。  Carriage 19 reciprocates between the leftmost position shown in FIG. 3 and the rightmost position shown in FIG. When Carriage 19 is at the leftmost position, its left side is close to the inside of Left Side Frame 9. On the other hand, when the carriage 19 is at the rightmost position, the right side portion having the engagement hole 29 is close to the inside of the right side frame 10.
駆動モータ M 1 のモータ軸 1 2 は、 図 7に示すように、 矢印 Aで示す時計回り に回転する。 モータ軸 1 2の回転 は、 ウォーム 1 3、 第 1 伝達歯車群 3 6のウォームホイ ール 4 1 及び大径歯車 4 2、 キヤ リ ッジ駆動歯車群 2 2 の駆動歯車 2 3及びキヤ リ ッジ駆動プーリ 2 4に伝わつ て、 キャ リ ッジ駆動プーリ 2 4 を反時計回り に回転駆動 する。 キヤ リ ッジ駆動プーリ 2 4の反時計回りの回転に よって、 キャ リ ッジ駆動プーリ 2 4 と従動プーリ 2 6 と の間に巻き掛けられた駆動ベル ト 2 7 は図 7の矢印の方 向 （図 3では矢印 B方向） に回動する。 The motor shaft 12 of the drive motor M1 rotates clockwise as shown by the arrow A as shown in FIG. The rotation of the motor shaft 12 is controlled by the worm 13, the worm wheel 41 of the first transmission gear group 36, the large-diameter gear 42, and the carriage drive gear group 22. The drive gear 23 and the carriage drive pulley 24 are driven to rotate the carriage drive pulley 24 counterclockwise. The drive belt 27 wound between the carriage drive pulley 24 and the driven pulley 26 by the counterclockwise rotation of the carriage drive pulley 24 moves the drive belt 27 in the direction of the arrow in FIG. (In the direction of arrow B in FIG. 3).
キヤ リ ッジ駆動ベル 卜 2 7が回動すると、 キヤ り ッジ 駆動ベル ト 2 7 に取り付けられたキヤ リ ッジ駆動ピン 2 8 も図 3の矢印 B方向に回動する。 図 3 では駆動ピン 2 8が最も左の位置にある状態、 すなわち、 駆動ピン 2 8 が従動プーリ 2 6の左側を回動しているときを示してい る。 図 3の状態からさ らに駆動ベル ト 2 7が回動すると、 駆動ピン 2 8は従動プーリ 2 6の左側を回動した後、 右 方向に直線移動する。 その結果、 駆動ピン 2 8 はキヤ リ ッジ 1 9の係合？ L 2 9 を介してキャ リ ッジ 1 9を右方向 に引つ張リながら移動する。  When the carriage drive belt 27 rotates, the carriage drive pin 28 attached to the carriage drive belt 27 also rotates in the direction of arrow B in FIG. FIG. 3 shows a state where the drive pin 28 is at the leftmost position, that is, a state where the drive pin 28 is rotating on the left side of the driven pulley 26. When the drive belt 27 further rotates from the state shown in FIG. 3, the drive pin 28 rotates leftward of the driven pulley 26 and then linearly moves rightward. As a result, is drive pin 28 engaged with carriage 19? Move while dragging carriage 19 rightward via L29.
さ らに駆動ベル ト 2 7が回動して、 駆動ピン 2 8がキ ャ リ ッジ駆動プーリ 2 4の右側を廻ったとき、 キヤ リ ッ ジ 1 9は図 8 に示すよ うな最もおの位置にく る。 この位 置からさ らに駆動ベル ト 2 7 が回動すると、 駆動ピン 2 8 はキヤ リ ッジ駆動プーリ 2 4の右側を回動した後、 左 方向に直線移動する。 その結果、 駆動ピン 2 8 はキヤ リ ッジ 1 9の係合孔 2 9 を介してキャ リ ッジ 1 9 を左方向 に引つ張り ながら移動する。  Further, when the drive belt 27 rotates and the drive pin 28 turns to the right of the carriage drive pulley 24, the carriage 19 becomes the most suitable position as shown in FIG. Position. When the drive belt 27 further rotates from this position, the drive pin 28 rotates rightward of the carriage drive pulley 24 and then linearly moves leftward. As a result, the drive pin 28 moves while pulling the carriage 19 to the left through the engagement hole 29 of the carriage 19.
以上のように駆動ベル ト 2 7 を一定方向に回動し続け ると、 キャ リ ッジ 1 9は左サイ ドフ レーム 9 と右サイ ド フ レーム 1 0 との間を往復移動することになる。 その結 果、 キャ リ ッジ 1 9に搭載された印字ヘッ ド 1 8 はブラ テン部 1 7に沿って往復移動することになる。 Continue rotating drive belt 27 in a certain direction as described above. Then, the carriage 19 reciprocates between the left side frame 9 and the right side frame 10. As a result, the print head 18 mounted on the carriage 19 reciprocates along the platen section 17.
上に説明した第 1 実施例によるキャ リ ッジ駆動部材 Carriage drive member according to the first embodiment described above
(ピン） のキャ リ ッジ駆動ベル トへの取付構造 （図 5、 図 6 ) も、 第 2実施例によるキャ リ ッジ駆動部材 （ピン） のキャ リ ッジ駆動ベル トへの取付構造 （図 9 ) も、 キヤ リ ッジ駆動ベル トの外周面 1 力所に外方に突出する凸部 を一体形成し、 その凸部にキャ リ ッジ駆動部材の一部を 受け入れる係合部 （ベル ト側係合部） を形成している。 一方、 キャ リ ッジ駆動部材の下方部にはベル ト側係合部 の形状に適応した形状を備えた係合部 （キャ リ ッジ駆動 部材側係合部） を形成している。 したがって、 キヤ リ ツ ジ駆動部材のキャ リ ッジ駆動部材側係合部をキャ リ ッジ 駆動ベル ト外周に形成した凸部のベル ト側係合部に係合 することによ り、 キャ リ ッジ駆動部材はキャ リ ッジ駆動 ベル トに取り付けられる。 The mounting structure of the (pin) to the carriage drive belt (Figs. 5 and 6) is also the mounting structure of the carriage drive member (pin) to the carriage drive belt according to the second embodiment. (Fig. 9) also has an outwardly projecting projection integrally formed at one location on the outer peripheral surface of the carriage drive belt, and the engagement portion that receives a part of the carriage drive member at the projection. (Belt-side engaging portion). On the other hand, an engagement portion (carriage drive member-side engagement portion) having a shape adapted to the shape of the belt-side engagement portion is formed below the carriage drive member. Therefore, by engaging the carriage driving member side engaging portion of the carriage driving member with the belt side engaging portion of the convex portion formed on the outer periphery of the carriage driving belt. The carriage drive member is attached to the carriage drive belt.
このように、 本発明によるキャ リ ッジ駆動部材のキヤ リ ッジ駆動ベル トへの取付構造によると、 キャ リ ッジ駆 動ベル 卜の内側に何等特別の部材を突出させることはな いので、 従来のように、 キャ リ ッジ駆動ベル トの歯の数 とキヤ リ ッジ駆動プーリ及び受動プーリの歯の数との比 を特に考慮する必要がな く、 また、 キャ リ ッジ駆動ブー リ及び受動プーリの歯の一部を特別に加工を施さな く て もよい。 As described above, according to the mounting structure of the carriage drive member to the carriage drive belt according to the present invention, no special member protrudes inside the carriage drive belt. Therefore, unlike the conventional case, it is not necessary to particularly consider the ratio between the number of teeth of the carriage driving belt and the number of teeth of the carriage driving pulley and the passive pulley. Do not specially machine the teeth of the drive and passive pulleys. Is also good.
第 1、 第 2実施例では、 キャ リ ッジ駆動ベル ト外周に 凸部を一体成形で得たが、 も し、 強力な接着剤が入手可 能であれば、 キャ リ ッジ駆動ベル ト外周面に凸部に相当 する構造物を接着してもよい。  In the first and second embodiments, the convex portion is obtained by integral molding on the outer periphery of the carriage driving belt. However, if a strong adhesive is available, the carriage driving belt can be obtained. A structure corresponding to the projection may be bonded to the outer peripheral surface.
また、 キャ リ ッジ駆動部材のキャ リ ッジ駆動部材側係 合部と、 キャ リ ッジ駆動ベル ト外周に形成した凸部のべ ル ト側係合部のそれぞれの形状は、 第 1 及び第 2実施例 で示した以外に、 いろいろな変形例が可能である。 例え ば、 第 1 実施例の 1 変形例と して、 キャ リ ッジ駆動ベル ト外周の凸部の両側には、 く びれ部 3 1 でなく、 縦溝を 形成し、 一方、 キャ リ ッジ駆動部材の下方部には、 下方 に開口する U型の凹部を形成した平板状の係合板を固定 して、 その係合板の凹部の内側端縁をキャ リ ッジ駆動べ ル 卜の凸部の縦溝に嵌合するようにしてもよい。 また、 第 2実施例の変形例と して、 キャ リ ッジ駆動部材 （ピン） の下方部の揷入部 6 0の断面を円形 （図 5 ) の代わり に 長方形と し、 それに合わせてキャ リ ッジ駆動ベル トの凸 部 3 0の貫通孔 5 9の断面も同 じ大きさの長方形と して もよい。  The shape of the engagement portion of the carriage drive member on the carriage drive member side and the shape of the engagement portion of the protrusion on the outer periphery of the carriage drive belt on the belt side are respectively the first shape. Various modifications are possible other than those shown in the second embodiment. For example, as a modification of the first embodiment, a vertical groove is formed on both sides of the convex portion on the outer periphery of the carriage driving belt, instead of the constriction 31, while the carriage is formed. At the lower part of the drive member, a flat engagement plate having a U-shaped recess that opens downward is fixed, and the inner edge of the recess of the engagement plate is raised by the protrusion of the carriage drive belt. You may make it fit in the longitudinal groove of a part. Also, as a modification of the second embodiment, the cross section of the lower portion 60 of the carriage driving member (pin) is made to be a rectangle instead of a circle (FIG. 5), and the carriage is adjusted accordingly. The cross section of the through hole 59 of the projection 30 of the carriage drive belt may be a rectangle of the same size.

Claims

請 求 の 範 囲  The scope of the claims
. キヤ リ ッジ駆動ベル 卜に固定されたキヤ リ ッジ駆動 部材を印字へッ ドを搭載するためのキャ リ ッジに係合 して、 キャ リ ッジ駆動ベル トを回動させることによ り、 上記キャ リ ッジを直線運動させるプリ ンタにおいて、 キャ リ ッジ駆動部材がキャ リ ッジ駆動ベル トに対し て、 ベル ト内周面を用いるこ となく ベル ト外周面との 間のみ固定されていること を特徴とする、  Rotating the carriage drive belt by engaging the carriage drive member fixed to the carriage drive belt with the carriage for mounting the print head. Accordingly, in the printer for linearly moving the carriage, the carriage driving member is not in contact with the carriage driving belt, but is used with the belt outer peripheral surface without using the belt inner peripheral surface. Characterized by being fixed only during
プリ ンタにおけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆 動ベル トへの取付構造。  The mounting structure of the carriage drive member to the carriage drive belt in the printer.
2 . 上記キャ リ ッジ駆動部材は、 上記キャ リ ッジ駆動べ ル トの外周面に対して着脱自在に固定される、 請求の 範囲第 1 項記載のプリ ンタにおけるキヤ リ ッジ駆動部 材のキヤ リ ッジ駆動ベル 卜への取付構造。  2. The carriage driving unit in a printer according to claim 1, wherein the carriage driving member is detachably fixed to an outer peripheral surface of the carriage driving belt. Mounting structure of the material to the carriage drive belt.
3 . 上記キャ リ ッジ駆動ベル トの外周面 1 力所には取付 部を設け、 その取付部に上記にキャ リ ッジ駆動部材側 係合部に適応する構造を備えたベル ト側係合部材を形 成したことを特徴とする、 請求の範囲第 1 項記載のプ リ ンタにおけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆動 ベル トへの取付構造。 3. A mounting part is provided at one place on the outer peripheral surface of the carriage driving belt, and the mounting part has a structure adapted to the above-mentioned engaging part on the carriage driving member side. The mounting structure of the carriage driving member to the carriage driving belt in the printer according to claim 1, wherein a joining member is formed.
4 . 上記取付部がベル ト外方に突出する凸部である こ と を特徴とする、 請求の範囲第 3項記載のプリ ンタにお けるキヤ リ ッジ駆動部材のキヤ リ ッジ駆動ベル 卜への 取付構造。  4. The carriage driving bell of the carriage driving member in the printer according to claim 3, wherein the mounting portion is a protrusion protruding outward from the belt. Attachment structure to the bird.
5 . 上記凸部はキャ リ ッジ駆動ベル トと一体的に形成さ れたものである、 請求の範囲第 4項記載のプリ ンタに おけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆動ベル 卜へ の取付構造。5. The above protrusion is formed integrally with the carriage drive belt. 5. The mounting structure of the carriage driving member to the carriage driving belt in the printer according to claim 4, wherein the carriage driving member is mounted on the carriage driving belt.
. 上記ベル ト側係合部は、 上記凸部の基部に形成した く びれ部によ り構成され、 一方、 上記キャ リ ッジ駆動 部材側係合部は、 上記凸部のく びれ部と上記キヤ リ ツ ジ駆動ベル 卜の外周面との間に形成される空間に嵌合 し得る構造を備えている、 請求の範囲第 4項記載のプ リ ンタ におけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆動 ベル 卜への取付構造。 The belt-side engaging portion is formed by a constricted portion formed at the base of the convex portion, while the carriage driving member-side engaging portion is formed by a constricted portion of the convex portion. 5. The carriage of the carriage driving member in the printer according to claim 4, further comprising a structure capable of fitting into a space formed between the carriage driving belt and the outer peripheral surface of the carriage driving belt. Mounting structure to the bridge drive belt.
. 上記ベル ト側係合部は、 上記凸部に形成された孔で ある、 請求の範囲第 4項記載のプリ ンタにおけるキヤ リ ッジ駆動部材のキヤ リ ッジ駆動ベル 卜への取付構造。5. The mounting structure of the carriage driving member to the carriage driving belt in the printer according to claim 4, wherein the belt-side engaging portion is a hole formed in the projection. .
. 上記キャ リ ッジ駆動部材は、 上記キャ リ ッジに係合 のため差し込まれる上方部分と、 キャ リ ッジ駆動部材 側係合部を形成する下方部分とからなる、 請求の範囲 第 3項記載のプリ ンタにおけるキャ リ ッジ駆動部材の キヤ リ ッジ駆動ベル 卜への取付構造。The third aspect of the present invention, wherein the carriage driving member comprises an upper portion inserted into the carriage for engagement, and a lower portion forming a carriage driving member side engaging portion. The mounting structure of the carriage drive member to the carriage drive belt in the printer described in the above section.
. 上記キャ リ ッジ駆動部材の上方部分は断面円形のピ ン型部材であり、 また下方部材は板状である、 請求の 範囲第 8項記載のプリ ンタにおけるキヤ リ ッジ駆動部 材のキヤ リ ッジ駆動ベル 卜への取付構造。9. The carriage driving member of the printer according to claim 8, wherein an upper portion of the carriage driving member is a pin-shaped member having a circular cross section, and a lower member is plate-shaped. Mounting structure to the carriage drive belt.
0 . 上記キャ リ ッジ駆動部材の上方部分は断面円形の ピン型部材であり、 また下方部材は上方部材よ り も径 の大なる断面円形のピン型部材である、 請求の範囲第 8項記載のプリ ンタにおけるキヤ リ ッジ駆動部材のキ ャ リ ッジ駆動ベル 卜への取付構造。 0. The upper part of the carriage driving member is a pin-shaped member having a circular cross section, and the lower member is a pin-shaped member having a circular cross section having a larger diameter than the upper member. 9. The mounting structure of the carriage driving member to the carriage driving belt in the printer according to item 8.
PCT/JP1998/001668 1997-04-10 1998-04-10 Structure for fixing carriage driving member to carriage driving belt in printer WO1998045124A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54260698A JP4041543B2 (en) 1997-04-10 1998-04-10 Mounting structure of carriage drive member to carriage drive belt in printer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10683597 1997-04-10
JP9/106835 1997-04-10

Publications (1)

Publication Number Publication Date
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WO (1) WO1998045124A1 (en)

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CN105000318B (en) * 2015-07-14 2017-04-12 河南科技大学 Tobacco conveying device capable of realizing interval uniform-velocity conveying
CN109590784B (en) * 2018-12-11 2020-11-10 中国航空制造技术研究院 Transverse driving device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63201747U (en) * 1987-06-16 1988-12-26
JPH05551A (en) * 1990-10-19 1993-01-08 Seiko Epson Corp Carriage mechanism of printer and carriage control device
JPH0694081A (en) * 1992-09-08 1994-04-05 Canon Inc Belt transmission mechanism and recorder therewith

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63201747U (en) * 1987-06-16 1988-12-26
JPH05551A (en) * 1990-10-19 1993-01-08 Seiko Epson Corp Carriage mechanism of printer and carriage control device
JPH0694081A (en) * 1992-09-08 1994-04-05 Canon Inc Belt transmission mechanism and recorder therewith

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JP4041543B2 (en) 2008-01-30

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