JP2012152996A - Tube guide and inkjet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tube guide, which is compact, and in which a head of a fastening member does not contact with a tube.SOLUTION: The tube guide comprises: a guide fixing part in which lateral six body-side ink tubes 72 are piped along the bottom face of the guide fixing part; a fixing screw 161 which fastens the guide fixing part to an object to be fixed while the heads 161a are protruded from the bottom face; and a pair of inclined protrusions 163 which are formed at the bottom face of the guide fixing part, and inhibit contact with the heads 161a of the six body-side ink tubes 72.

Description

  The present invention relates to a tube guide and an inkjet recording apparatus in which a plurality of tubes arranged side by side are piped.

  Conventionally, as a tube guide for a plurality of tubes connected to an inkjet head, one having a U-shaped holding portion for holding a plurality of tubes and a fastening portion for fixing to a housing is known. (See Patent Document 1). This U-shaped holding portion has a pair of rib members (opposing clamping plate portions) and is piped with a plurality of tubes arranged in parallel in the vertical direction so as to be clamped by the pair of rib members. On the other hand, the fastening portion has a bracket shape and is formed integrally with the U-shaped holding portion. The tube guide is screwed to the housing by screws (screws) provided at the fastening portion.

JP 2007-144905 A

  However, in such a configuration, since it is necessary to provide a fastening portion separately from the U-shaped holding portion, there is a problem that the tube guide becomes large and a large installation space is required. On the other hand, it is conceivable that the fastening portion is omitted and one rib member (clamping plate portion) of the U-shaped holding portion is directly screwed to the housing. In such a case, the rib member is a thin plate material. Therefore, the counterbored hole cannot be formed, and the screw head protrudes from the surface of the rib member. In other words, if the tube is piped so as to be sandwiched between the U-shaped holding portions, the tube will come into strong contact with the head of the screw protruding from the surface of the rib member, and the tube will be rubbed due to vibration of the entire device. The problem of being damaged is assumed. Of course, if a screw is provided at a position off the tube, such a problem does not occur. However, in this case, the tube guide is enlarged as in the case where the fastening portion is provided.

  It is an object of the present invention to provide a tube guide and an ink jet recording apparatus that are small in size and do not contact the tube with the head of the fastening member.

  The tube guide of the present invention includes a tube path member that is piped along the bottom surface of the tube, a fastening member that fastens the tube path member to a fixed object in a state where the head protrudes from the bottom surface, and the tube path member. And a protrusion that prevents contact with the head of the tube.

According to this configuration, by providing the protrusion, it is possible to avoid the piped tube from contacting the head while being fastened to the fixed object on the tube path member. Therefore, the tube guide has a size corresponding to the tube, and can be reduced in size.
Further, the projections can prevent the tube from being damaged by the contact of the fastening member. The protrusion is preferably formed integrally with the tube path member.

  In this case, it is preferable that the protrusions have a pair of inclined protrusions that face each other in the extending direction of the tube across the head and rise upward toward the head.

  According to this configuration, the piping is provided so as to be bridged above the head of the fastening member by the pair of inclined protrusions, so that contact with the head can be reliably prevented. Further, since the pair of inclined protrusions are inclined upward toward the head, the protrusions themselves do not cause damage.

  In this case, each inclined protrusion preferably has a width exceeding the diameter dimension of the head.

  According to this configuration, since the tube can be prevented from coming into contact with the head from the width direction with a simple protrusion shape, contact with the head can be more reliably prevented.

  The inkjet recording apparatus of the present invention includes a carriage unit having an inkjet head mounted on a carriage, a movable side end fixed to the carriage unit, and a fixed side end fixed to a tube support member. And a tube for ink supply that follows and deforms, and the tube support member is constituted by the tube guide.

  According to this configuration, the tube support member of the tube that is deformed to follow is configured by the tube guide, so that damage to the tube that is deformed following can be suppressed, and ink can be stably supplied to the inkjet head. . Therefore, the reliability of the apparatus can be improved.

1 is an external perspective view showing an ink jet recording apparatus according to an embodiment. It is the perspective view which showed the inkjet recording device which abbreviate | omitted the apparatus housing. It is sectional drawing which showed the apparatus main body. It is the principal part perspective view which showed the left end part of the apparatus main body. It is the back surface perspective view which showed the apparatus main body. It is the perspective view which showed the intermediate joint periphery. It is the perspective view which showed the 2nd support frame and the tube guide. It is the perspective view which showed the 2nd support frame. (A) is the perspective view which showed the main body side ink tube and the tube guide. (B) is the perspective view which showed the tube guide. (C) is the top view which showed the main body side ink tube and the tube guide. (D) is AA 'sectional drawing which showed the main body side ink tube and the tube guide. It is sectional drawing which showed the locking piece and the partition part periphery. It is sectional drawing which showed the screwing part periphery. It is sectional drawing which showed the screwing part periphery of the modification.

  Hereinafter, an inkjet recording apparatus 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing the ink jet recording apparatus 1, and FIG. 2 is a perspective view showing the ink jet recording apparatus 1 with the apparatus housing 26 omitted. As shown in FIGS. 1 and 2, the ink jet recording apparatus 1 is a so-called ink jet printer, which is detachably connected to the apparatus main body 2 and the side surface of the apparatus main body 2 and is equipped with an ink tank 11 of each color. And a unit 3. In the following description, the front-rear direction in FIGS. 1 and 2 is defined as the X-axis direction, and the left-right direction is defined as the Y-axis direction.

  The tank unit 3 is composed of six carriage-independent ink tanks 11 each storing six colors of ink, a tank housing 12 covering the six ink tanks, and six ink tanks 11 connected to the upstream end. And a tank-side ink tube 13 (see FIG. 2). That is, the six ink tanks 11 and the six tank-side ink tubes 13 constitute a tank-side ink supply unit that is an ink supply system on the tank unit 3 side.

  Each tank-side ink tube 13 is drawn into the apparatus main body 2 from a tube opening 14 opened on the side surface of the apparatus main body 2, and a downstream end is connected to an intermediate joint 71 described later. As a result, the tank unit 3 and the apparatus main body 2 are connected to each other through a flow path. The tank housing 12 has a pair of front and rear engaging portions 15 for attaching and detaching the tank unit 3 to and from the apparatus main body 2. By engaging this with a pair of front and rear engaged portions 27 on the apparatus main body 2 side, the tank unit 3 is detachably connected to the apparatus main body 2 while the tank-side ink tube 13 is connected. The tank unit 3 is attached to the apparatus main body 2 in a vertical position when supplying ink, and is detached from the apparatus main body 2 to be in a horizontal position when ink is supplied to the ink tank 11.

  Next, the apparatus main body 2 will be described with reference to FIGS. As shown in FIG. 2, the apparatus main body 2 is disposed above the feed path R and a transport unit 21 that transports a sheet recording medium (printing paper or cut sheet) along the feed path R. A printing unit 22 that performs printing processing on a medium by an inkjet method, a main body side ink supply unit 23 that supplies ink from the tank unit 3 (each ink tank 11) to the printing unit 22, and driving of the transport unit 21 and the printing unit 22 The control part 24 which has the circuit board 61 which controls this, the apparatus frame 25 which mounted each part, and the apparatus housing 26 (refer FIG. 1) which covers these are provided. As shown in FIG. 1, a pair of front and rear engaged portions 27 with which the pair of engaging portions 15 are engaged are formed on the side surface of the device housing 26. In addition, a USB port 16 (see FIG. 5) and a power supply port are disposed at the lower rear portion of the apparatus body 2. That is, the inkjet recording apparatus 1 is configured to be connectable to a computer or the like via the USB port 16.

  FIG. 3 is a cross-sectional view of the apparatus main body 2. As shown in FIGS. 2 and 3, the transport unit 21 includes a paper feed tray 31 that sets the recording medium right aligned, a separation roller 32 that separates and feeds the recording medium one by one from the paper feed tray 31, and a separation unit. A paper feed roller 33 that is disposed on the downstream side of the roller 32 and feeds the recording medium directly below the printing unit 22, and a medium regulation that is disposed on the downstream side of the paper feed roller 33 and faces the printing unit 22 (inkjet head 52). A member (corresponding to a platen) 34, a sawtooth guide roller 35 located on the downstream side of the medium regulating member 34, a paper discharge roller 36 located on the downstream side of the guide roller 35 and for discharging the recording medium, A paper discharge tray 37 for receiving the discharged recording medium. As shown in FIG. 1, the paper feed tray 31 and the paper discharge tray 37 are movable.

  The paper feed roller 33 is composed of a nip roller composed of a lower paper feed drive roller 33a and an upper paper feed driven roller 33b. Similarly, the paper discharge roller 36 has a lower paper feed drive roller 36a and an upper paper feed drive roller 33b. The nip roller is composed of a discharge driven roller 36b. Further, the guide roller 35 and the paper discharge driven roller 35 b are supported by a roller frame 38 independent of the apparatus frame 25 to constitute a roller assembly 39. The paper feed roller 33 functions as a main roller that controls the feeding (sub-scanning) of the recording medium, and the paper discharge roller 36 applies tension to the recording medium located above the medium regulating member 34. Functions as a tension roller.

  FIG. 4 is a view showing the left end portion of the apparatus main body 2. As shown in FIG. 4, on the left side of the paper feed drive roller 33a and the paper discharge drive roller 36a, there are a transport motor (not shown) and a gear train 40 that transmits the drive of the transport motor to both rollers 33a and 36a. It is arranged. That is, the left side of the apparatus main body 2 is occupied by the transport motor and the gear train 40.

  The recording medium fed from the paper feed tray 31 by the separation roller 32 is intermittently fed by the paper feed roller 33 on the medium regulating member 34 toward the paper discharge roller 36 in the X-axis direction (sub scanning). Desired printing is performed by driving the printing unit 22 in synchronization with the intermittent feeding. On the other hand, the leading edge of the recording medium that has reached the guide roller 35 beyond the medium regulating member 34 is sent to the paper discharge roller 36 so that the upper warping state is corrected by the guide roller 35. In this way, the recording medium on which printing has been completed is sent out to the paper discharge tray 37 by the paper discharge roller 36.

  As shown in FIG. 2, the printing unit 22 is supported by the apparatus frame 25 and extends back and forth in the Y-axis direction, and can freely reciprocate with the guide shaft 49 and the guide frame 41. And a carriage moving mechanism 43 for reciprocating the carriage unit 42 along a guide shaft 49 and a guide frame 41. An ink jet head 52 is mounted on the carriage unit 42.

  The carriage moving mechanism 43 includes a timing belt 46 extending along the guide frame 41, a main pulley (not shown) and a driven pulley 47 that span the timing belt 46, a timing belt 46, and a carriage unit 42 (carriage 51). And a carriage motor 48 for driving a main pulley. When the carriage motor 48 rotates forward and backward, the carriage unit 42 reciprocates in the Y-axis direction (left-right direction) via the timing belt 46. Along with this reciprocation, the inkjet head 52 of the carriage unit 42 is driven to discharge, so-called main scanning is performed.

  As shown in FIG. 3, the carriage unit 42 includes a box-shaped carriage 51 that is reciprocally supported by the guide shaft 49 and the guide frame 41, an inkjet head 52 that is integrally incorporated on the lower surface of the carriage 51, and an inkjet And a connection adapter 53 for each color connected to the head 52 from above and connected to a downstream end of a main body side ink tube 72 described later. The ink-jet head 52 has six nozzle rows (not shown) for discharging ink droplets of six colors, and a circuit board via a flexible flat cable (hereinafter referred to as head connecting FFC) 62 for signal transmission. 61 is connected. Although the details will be described later, the main body side ink tube 72 has a folded portion on the left side to follow the reciprocating motion of the carriage 51 and deforms following, and the head connecting FFC 62 folds to the right side with respect to the reciprocating motion of the carriage 51. It has a portion and deforms following it. Each connection adapter 53 incorporates an ink buffer, an ink filter, and the like, and has an inflow joint for connecting the main body side ink tube 72 at the upper part thereof.

  In the printing process, the recording unit is intermittently fed (sub-scanned) in the X-axis direction by the transport unit 21 and the carriage unit 42 is reciprocated in the Y-axis direction by the carriage moving mechanism 43 while driving the inkjet head 52 ( Main scanning), image data is printed on printing paper. Ink of each color is sequentially supplied from each ink tank 11 to the inkjet head 52 by a pumping action by ink ejection.

  As shown in FIG. 2, the control unit 24 includes a circuit board 61 disposed at the rear end of the left side, various cables including the head connection FFC 62, and a cable frame 63 that guides the head connection FFC 62. It is equipped with. The head connecting FFC 62 has one end connected to the circuit board 61 and is drawn from the circuit board 61 along the left side surface and the front surface of the apparatus main body 2 in an upright posture, and then folded back in the left-right direction, with the other end at the other end. The inkjet head 52 on the carriage 51 is connected. On the other hand, the cable frame 63 extends along the left side surface of the apparatus main body 2, and extends along the front surface of the apparatus main body 2 and a first support frame 66 that supports the head connecting FFC 62 along the left side surface. And a second support frame 67 that supports the head connecting FFC 62 along the front surface. Accordingly, the head-connecting FFC 62 is fixed to the inkjet head 52 at the movable side end, and fixed to the second support frame 67 at the fixed side, and is deformed following the movement of the carriage 51.

  Here, with reference to FIGS. 2, 5, and 6, the main body side ink supply unit 23 that is an ink supply system on the apparatus main body 2 side will be described. FIG. 5 is a rear perspective view of the apparatus main body 2. As shown in FIGS. 2 and 5, the main body side ink supply unit 23 includes an intermediate joint 71 to which the downstream ends of the six tank side ink tubes 13 are connected, and an upstream end connected to the intermediate joint 71. Includes six main body side ink tubes (ink supply tubes) 72 connected to the connection adapter 53, and a guide mechanism 73 that guides the six main body side ink tubes 72.

  FIG. 6 is a perspective view around the intermediate joint 71. As shown in FIG. 6, the intermediate joint 71 includes six inflow ports 76 that connect the six tank side ink tubes 13 and six outflow ports 77 that connect the six main body side ink tubes 72. And a plate-like connecting portion 78 that connects the six inflow ports 76 and the six outflow ports 77. By connecting the tank side ink tube 13 and the main body side ink tube 72 by the intermediate joint 71, an ink tube that connects each ink tank 11 and the connection adapter 53 is configured. Further, an ink supply unit that supplies ink to the inkjet head 52 is connected by connecting the tank side ink supply unit (each ink tank 11 and each tank side ink tube 13) and the main body side ink supply unit 23 by the intermediate joint 71. Constitute.

  As shown in FIGS. 2 and 5, the six main body side ink tubes 72 connect the intermediate joint 71 and the connection adapter 53, and pull the inside of the apparatus main body 2 in a horizontal state. It has been turned. Specifically, the six main-body-side ink tubes 72 are drawn up approximately horizontally from the intermediate joint 71 in the left direction (Y-axis direction) of the apparatus main body 2 and then bent upward so as to be folded back ( Hereinafter, it has a folded tube portion 72 a) and is further bent to the back side to reach the connection adapter 53. In addition, the downstream end portions of the six main body side ink tubes 72 are fixed on the carriage 51, and the carriage 51 reciprocates with the inkjet head 52 side as a movable side and the intermediate joint 71 side as a fixed side. Along with this, it is configured to follow and deform. That is, the main body side ink tube 72 and the head connecting FFC 62 are disposed in the opposite directions in the left-right direction.

  In addition, the six main body side ink tubes 72 are provided with connecting bodies 79 that connect the six main body side ink tubes 72 side by side at a plurality of locations in the extending direction. The plurality of connecting bodies 79 are connected so as to be bundled together.

  The guide mechanism 73 includes an intermediate joint 71, a joint support member 81 that supports the ink tube around the intermediate joint 71, a tube guide 82 that guides the main body side ink tube 72 in front of the movement path of the carriage 51, and a carriage 51. A carriage fixing member 83 that is mounted and fixes a downstream end portion of the main body side ink tube 72 and a flexible protection plate 84 attached to the folded tube portion 72a of the main body side ink tube 72 are provided. The joint support member 81 and the tube guide 82 constitute a fixed pipe path through which the non-movable parts of the six main body side ink tubes 72 are piped, and the tube guide 82, the carriage fixing member 83, and the protection plate 84 constitute the six pipes. The movable part of the main body side ink tube 72 constitutes a movable piping path through which pipes are aligned.

  The carriage fixing member 83 fixes the downstream end portion of the main body side ink tube 72 on the carriage 51, guides the main body side ink tube 72 to the back side, and guides it to the connection adapter 53.

  One end of the protection plate 84 is fixed to the tube guide 82 and the other end is held on the carriage 51. The protection plate 84 is deformed along with the six main body side ink tubes 72 as the carriage 51 reciprocates. The protective plate 84 is provided along the folded tube portion 72a of the six main body side ink tubes 72 from the outside, and the folded tube portion 72a is connected to other constituent members on the left side or the upper side thereof (for example, the side wall of the device housing 26). Or contact with the ceiling). That is, the protective plate 84 has a function of a tube carrier. Further, the protection plate 84 is formed with a pair of holding pieces 84a (shown in an open state in the drawing) for holding the six main body side ink tubes 72 so as to hold the six main body side ink tubes 72. Of the main body side ink tube 72 is suppressed.

  As shown in FIG. 6, the joint support member 81 is integrally connected to the joint support portion 91 that supports the intermediate joint 71 and the joint support portion 91, and fixes and supports the downstream end portion of the tank-side ink tube 13. It has a tube support portion 92 and a main body side tube support portion 93 that is connected to the opposite side of the joint support portion 91 and supports the upstream end portion of the main body side ink tube 72. The joint support portion 91 has a pair of U-shaped guides 94 and 94, and the intermediate joint 71 is attached by snap-in from above.

  Next, the second support frame 67 and the tube guide 82 will be described in detail with reference to FIGS. FIG. 7 is a perspective view showing the second support frame 67 and the tube guide 82. As shown in FIG. 7, both the second support frame 67 and the tube guide 82 extend in the left-right direction (Y-axis direction) of the apparatus main body 2 and have an “L” -shaped cross section as a whole. . The tube guide 82 is attached to the second support frame 67 so as to overlap from above, while the second support frame 67 is supported by the apparatus frame 25.

  FIG. 8 is a perspective view showing the second support frame 67. As shown in FIG. 8, the second support frame 67 includes a cable guide plate portion 101 that extends in the Y-axis direction along the front surface of the apparatus main body 2 and guides the head connecting FFC 62, and the cable guide plate portion 101. A bracket-shaped attachment plate portion 102 extending in an “L” shape, a cable protection plate portion 103 extending from the right end of the cable guide plate portion 101 to the back side and protecting the folded portion of the head connecting FFC 62; ,have. The second support frame 67 is made of sheet metal as an electromagnetic wave shielding member for the head connecting FFC 62.

  The cable guide plate portion 101 supports the non-movable portion of the head connecting FFC 62 and receives the bottom of the movable portion (folded portion) connected to the non-movable portion. Specifically, the non-movable part of the head connecting FFC 62 and the guide wall body 106 facing the movable part, and the three locking pieces 107 that respectively support the non-moving part of the head connecting FFC 62 at three locations in the extending direction. And are integrated. Each locking piece 107 is formed by cutting and raising the guide wall body 106 into a hook shape. The head connection FFC 62 is supported and fixed so as to be sandwiched with the guide wall body 106, and the head connection FFC 62 is guided. Wiring is made along the wall 106.

  FIG. 9 is a view showing the tube guide 82. As shown in FIG. 9, the tube guide 82 faces the side surface of the deformation trajectory of the tube support portion (tube support member) 110 that supports the fixing side of the main body side ink tube 72 and the folded tube portion 72a, and the tube support portion. 110, and a partition plate portion 112 disposed so as to separate the folded tube portion 72a from the three locking pieces 107. The tube support part 110 includes a receiving plate part 111 that receives the bottom of the folded tube part 72a of the main body side ink tube 72, and a guide fixing part that is connected to the receiving plate part 111 and fixes a non-movable part of the main body side ink tube 72. (Tube path member) 113. The receiving plate portion 111, the partition plate portion 112, and the guide fixing portion 113 are integrally formed.

  The receiving plate portion 111 is made of a plate material that receives the bottom side of the folded tube portion 72a from below, and is disposed above the roller assembly 39 through a predetermined space. In other words, the backing plate portion 111 prevents the main body side ink tube 72 that has been deformed from coming into contact with the roller assembly 39.

  The partition plate portion 112 includes a partition plate main body 171 and two openings 172 that are opened in the partition plate main body 171. The two openings 172 are formed corresponding to the left two locking pieces 107 of the three locking pieces 107, respectively, and receive each locking piece 107 in a non-projecting state ( FIG. 7 and FIG. 10). That is, the partition plate portion 112 is formed such that the opening 172 includes the respective locking pieces 107, and the partition plate body 171 is formed with such a thickness that the respective locking pieces 107 do not protrude from the surface thereof. ing. Therefore, as shown in FIG. 10, even if the partition plate portion 112 and each locking piece 107 overlap in the thickness direction of the partition plate main body 171 when viewed from the side, each locking piece 107 is opened in each opening. It does not enter the part 172 and interfere with each other.

  As shown in FIG. 9, six main body side ink tubes 72 arranged side by side are piped along the bottom surface of the guide fixing portion 113. In addition, the guide fixing portion 113 is disposed on the upstream side of the first tube fixing portion 121 and the first tube fixing portion 121 that fixes the six main body side ink tubes 72 in the width direction and fixes them immovably. The six main body-side ink tubes 72 are fixedly disposed between the second tube fixing portion 122 and the first tube fixing portion 121 and the second tube fixing portion 122. And an error receiving portion 123 having a bending space S for bending the individual 72 in the arrangement direction.

  The first tube fixing portion 121 includes a first fixing base 131 to which six main body side ink tubes 72 are piped, and a first fixing member 132 that presses and fixes the six main body side ink tubes 72 to the first fixing base 131. And have. In the first fixed base 131, a plurality of first mounting portions 133 for screwing both ends in the width direction of the first fixing member 132 and six main body side ink tubes 72 are aligned (position regulation) in the alignment direction. Guide protrusions 134 are formed. That is, after the six main body-side ink tubes 72 are piped in a position-regulated state in the width direction, the first fixing member 132 is screwed to the first attachment portion 133, so that the six main-body side ink tubes 72 are not moved. Secure to. The plurality of guide protrusions 134 protrude from both ends of the six main body side ink tubes 72 and between the main body side ink tubes 72. In order to pipe the six main body side ink tubes 72 as one set, the guide protrusion 134 between the adjacent main body side ink tubes 72 belonging to the same set is made small (specifically, the main body side Smaller than the radius of the ink tube 72).

  The second tube fixing portion 122 includes a second fixing base 141 to which six main body side ink tubes 72 are piped, and a second fixing member 142 that presses and fixes the six main body side ink tubes 72 to the second fixing base 141. And have. The second fixing base 141 is formed with a second mounting portion 143 for screwing both ends of the second fixing member 142 in the width direction, and the second fixing base 142 is in a state where the six main body side ink tubes 72 are piped. By fixing the fixing member 142 with screws, the six main body side ink tubes 72 are fixedly fixed.

  The error receiving portion 123 has a bottom plate portion 151 that pipes the six main body side ink tubes 72 and a curved space S in which the six main body side ink tubes 72 can be bent in the alignment direction, and is separated in the alignment direction. The pair of guide wall portions 152, the intermediate fixing member 153 for pressing and fixing the six main body side ink tubes 72, the intermediate mounting portion 154 for attaching the intermediate fixing member 153, and the tube guide 82 are connected to the second support frame 67. And a screwing portion 155 to be attached to. Due to the curved space S, a length error of the main body side ink tube 72 can be received. That is, when a manufacturing error or a length difference due to routing occurs in the six main body side ink tubes 72, the main body side ink tube 72 is curved by piping the main body side ink tube 72 in the width direction by this difference. The error component in between is received by the non-movable part, and the movement of the movable part is prevented.

  FIG. 11 is a cross-sectional view showing around the screwing portion 155. As shown in FIGS. 9 and 11, the screwing portion 155 is fixed to fasten the tube guide 82 to the second support frame 67 (fixed object) in a state where the head portion 161 a protrudes from the bottom surface of the bottom plate portion 151. A screw (fastening member) 161, a through-hole 162 (fool hole) corresponding to the fixing screw 161, and a head 161 a of the fixing screw 161, are formed back and forth in the extending direction of the six main body side ink tubes 72. A pair of inclined protrusions 163 (protrusions). The fixing screw 161, the through hole 162, and the pair of inclined protrusions 163 are disposed on the width center line of the bottom plate portion 151, and the width center of the head 161a of the fixing screw and the width center of the pair of inclined protrusions 163 are arranged. And are positioned so as to match.

  The pair of inclined protrusions 163 face each other in the extending direction of the six main body side ink tubes 72 across the head 161a of the fixing screw 161, and are formed so as to rise toward the head 161a. Each inclined protrusion 163 has a height exceeding the height of the head 161a and a width exceeding the diameter of the head 161a. Therefore, the six piped main body side ink tubes 72 are bridged between the pair of inclined protrusions 163 without contacting the head 161a. Further, the pair of inclined protrusions 163 are convexly formed from the bottom plate portion 151 and are formed integrally with the bottom plate portion 151.

  According to the configuration as described above, the six main body side ink tubes 72 piped while fastening the tube guide 82 to the second support frame 67 by providing the pair of inclined protrusions 163 in the screwing portion 155. It is possible to avoid contact with the head 161a. Therefore, the tube guide 82 has a size corresponding to the six main body side ink tubes 72, and can be reduced in size. Further, the pair of inclined protrusions 163 can prevent the main body side ink tube 72 from being damaged by the contact of the fixing screw 161.

  In addition, since the piping is provided so as to be bridged over the head 161a of the fixing screw 161 by the pair of inclined protrusions 163, contact with the head 161a can be reliably prevented. In addition, since the pair of inclined protrusions 163 are inclined upward toward the head 161a, the inclined protrusions 163 themselves do not cause damage.

  Furthermore, each inclined protrusion 163 has a width exceeding the diameter dimension of the head portion 161a, so that the main body side ink tube 72 can be prevented from contacting the head portion 161a from the width direction with a simple shape. Therefore, contact with the head 161a can be more reliably prevented.

  In the present embodiment, the pair of inclined protrusions 163 are provided as the protrusions that prevent the main body side ink tube 72 from contacting the head 161a. However, the present invention is not limited to this. It may be a pair of ribs 201 standing up and down (see FIG. 12) or an annular protrusion surrounding the head 161a. In such a case, it is assumed that the pair of ribs 201 and the annular protrusion have a height exceeding the height of the head 161a.

  In the present embodiment, the present invention is applied to the tube guide 82 attached to the fixed object by the fixing screw 161. However, if the tube guide 82 is attached to the fixed object by the fastening member having the head 161a, It is not limited to. For example, the present invention may be applied to a tube guide 82 that is attached to a fixed object with rivets or nails.

  Further, in the present embodiment, the present invention is applied to the tube guide 82 that pipes a plurality of main body side ink tubes 72, but the present invention is applied to a tube guide 82 that pipes a single main body side ink tube 72. May be.

  In the present embodiment, the ink tank 11 is arranged outside the apparatus main body 2 and divided into the tank unit 3 and the apparatus main body 2. However, the ink tank 11 is arranged inside the apparatus main body 2. The integrated ink jet recording apparatus 1 may be used.

  DESCRIPTION OF SYMBOLS 1: Inkjet recording device 42: Carriage unit 51: Carriage 52: Inkjet head 67: 2nd support frame 72: Main body side ink tube 82: Tube guide 110: Tube support part 113: Guide fixing part , 161: fixing screw, 161a: head, 163: inclined projection, 201: rib

Claims (4)

A tube path member in which the tube is piped along the bottom surface;
A fastening member that fastens the tube path member to a fixed object in a state where the head protrudes from the bottom surface,
A tube guide, comprising: a protrusion provided on the bottom surface of the tube path member and preventing the tube from contacting the head.   The said protrusion part has a pair of inclination protrusion which opposes in the extension direction of the said tube on both sides of the said head, and rises toward the said head. Tube guide.   The tube guide according to claim 2, wherein each of the inclined protrusions has a width exceeding a diameter dimension of the head. A carriage unit having an inkjet head mounted on the carriage;
An ink supply tube having a movable side end fixed to the carriage unit and a fixed side end fixed to a tube support member and deformed following the movement of the carriage unit;
An ink jet recording apparatus, wherein the tube support member comprises the tube guide according to any one of claims 1 to 3.

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