JP2005111884A - Liquid jetting head and liquid jetting apparatus with liquid jetting head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid jetting head which can protect a fixed substrate from a liquid such as ink by enhancing water-proof properties between a case head and a cover head, and to provide a liquid jetting apparatus having a liquid jetting head. <P>SOLUTION: A cover case 311 has a recess part 371 for storing the fixed substrate, a cover side bonding part 371 which approaches or butts against the case head in the periphery of the recess part, and the like. The case head 310 has a case side bonding part 356 corresponding to the cover side bonding part 371. Each surface of the cover side bonding part and the case side bonding part is made a plane shape. A guide means 353a for arranging the cover side bonding part and the case side bonding part at opposite positions is set at the case head to project from the case head. A cover case entry guiding part 354a for guiding for the cover side bonding part to enter holding an angle to the case side bonding part is formed at the guide means in the liquid jetting head 300. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a liquid ejecting head that ejects liquid and a liquid ejecting apparatus having the liquid ejecting head.

2. Description of the Related Art Conventionally, for example, an ink jet recording apparatus that is a liquid ejecting apparatus is provided with, for example, an ink jet recording head that is a liquid ejecting apparatus for discharging ink (see, for example, Patent Document 1).
The ink jet recording head has a case head on which an ink cartridge that stores ink that is liquid is mounted. This flexible substrate is connected to a fixed substrate and is arranged on the case head.
A cover case is disposed so as to cover the fixed substrate disposed on the case head. A part of the cover case is fixed to the case head by bonding or the like to the case head.
Japanese Patent Laid-Open No. 9-248949 (FIG. 3 etc.)

However, in recent years, downsizing of the ink jet recording apparatus has progressed, and there has been a demand for mobile users to carry the ink jet recording apparatus. However, as described above, when a user carries and uses an ink jet recording apparatus having a conventional ink jet recording head in which a part of the cover case is bonded to the case head 14, the following problems occur.
That is, if the ink jet recording apparatus is tilted greatly, the waste liquid absorbent in the apparatus, the ink adhering to the wiper, the waste ink accumulated in the cap, and the ink in the ink cartridge disposed in the case head leak into the case head. put out. At this time, only a part of the case head is adhered to the cover case, and the waterproof property is insufficient, so that the ink enters between the case head and the cover case to fix the inside. There was a problem that the fixed substrate and the like generate heat when reaching the substrate.

  SUMMARY An advantage of some aspects of the invention is to provide a liquid ejecting head capable of improving waterproofness between a case head and a cover case and protecting a fixed substrate from a liquid such as ink, and a liquid ejecting apparatus having the liquid ejecting head. .

  According to the first aspect of the present invention, there is provided a head unit having a nozzle forming portion having a nozzle opening for discharging a liquid, an actuator portion for discharging the liquid from the nozzle opening, and the actuator portion. A liquid ejecting head comprising: a flexible substrate to be connected; a fixed substrate that connects the flexible substrate; a case head that holds the fixed substrate; and a cover case that covers the fixed substrate held by the case head. The cover case includes a concave portion that accommodates the fixed substrate, and a cover-side adhesive portion that approaches or contacts the case head around the concave portion, and the case head is attached to the cover-side adhesive portion. A corresponding case-side adhesive portion, and the cover-side adhesive portion and the case-side adhesive portion have flat surfaces, respectively. The case head is provided with guide means for projecting from the case head to dispose the cover side adhesive portion and the case side adhesive portion at opposing positions, and the guide means is provided with the cover side adhesive portion. The liquid ejecting head is characterized in that a cover case entering guide portion is formed for guiding the portion to enter the case side adhesive portion while maintaining an angle.

According to the configuration of the first aspect of the invention, the cover case includes a concave portion that accommodates the fixed substrate, and a cover-side adhesive portion that approaches or contacts the case head around the concave portion, and the case head Has a case-side adhesive portion corresponding to the cover-side adhesive portion, and the surfaces of the cover-side adhesive portion and the case-side adhesive portion each have a planar shape.
For this reason, when the said cover side adhesion part and the said case side adhesion part are adhere | attached with an adhesive agent etc., these cover side adhesion parts and a case side adhesion part become a shape which is easy to apply | coat an adhesive agent.
Further, since the cover side adhesive portion is formed around the concave portion that accommodates the fixed substrate, the cover side adhesive portion is adhered to the case side adhesive portion with an adhesive or the like, so that the periphery of the fixed substrate The waterproofness can be increased.

Further, according to the configuration of the present invention, the case head is provided with guide means for arranging the cover side adhesive portion and the case side adhesive portion at opposing positions so as to protrude from the case head, and the guide The means is formed with a cover case entry guide portion for guiding the cover side adhesive portion to enter the case side adhesive portion while maintaining an angle.
For this reason, when the cover side adhesive portion is brought into contact with the case side adhesive portion via an adhesive or the like, the cover side adhesive portion does not slide on the case side adhesive portion. The agent or the like is pushed forward in the sliding direction, and the thickness of the adhesive or the like between the two does not vary depending on the location.
Therefore, it is difficult to produce a thin portion such as an adhesive that deteriorates the waterproof property, and the waterproof property can be improved as a whole.

  Further, whether or not the adhesive or the like is surely disposed between the cover-side adhesive portion and the case-side adhesive portion is performed by visually recognizing the adhesive or the like protruding from between the two. Even if it is bonded, the adhesive or the like does not protrude from the thin portion such as. For this reason, the adhesion state cannot be visually confirmed from the outside. However, according to the configuration of the present invention, since a thin portion such as an adhesive does not occur, the accuracy of confirmation by visually confirming the adhesion state is significantly improved. .

  According to a second invention, in the configuration of the first invention, the cover side adhesive portion is formed over the entire circumference around the recess, and the case side adhesive portion is also formed over the entire week. The liquid ejecting head is formed corresponding to the portion.

  According to the structure of 2nd invention, the said cover side adhesion part is formed over the perimeter around the said recessed part, and the said case side adhesion part is also formed corresponding to the said cover side adhesion part formed over the said all week. Has been. For this reason, since the circumference | surroundings of the said fixed board | substrate accommodated in the said recessed part are adhere | attached over a perimeter, waterproofness can be improved significantly.

  According to a third invention, in the configuration of the first or second invention, the cover case is formed with a guided part movable along the cover case entry guide part, and the cover case entry guide part A guided holding portion that holds the guided portion guided by the cover case entry guide portion is formed on the base end side of the guide, and the guided holding portion is a restriction that restricts the movement of the guided portion. The liquid jet head is characterized in that a portion is formed.

  According to the structure of 3rd invention, the to-be-guided part which can move along the said cover case approach guide part is formed in the said cover case. For this reason, the guided portion moves along the cover case entry guide portion, so that the cover side adhesive portion can be brought close to or in contact with the case side adhesive portion with high accuracy while maintaining an angle. The cover side adhesive portion does not slide on the case side adhesive portion.

Further, according to the configuration of the present invention, a guided holding portion that holds the guided portion guided by the cover case entry guide portion is formed on the base end side of the cover case entry guide portion,
The guided holding portion is formed with a regulating portion that regulates the movement of the guided portion.
For this reason, the guided portion of the cover case is held by the guided holding portion of the case head after the guidance is finished and the cover case is arranged at a predetermined position. Since the movement of the guided part held by the guided holding part is restricted by the restricting part, the guided part serves as a so-called retainer that prevents the cover case from moving away from the case head.

  According to the fourth invention, in any one of the first to third configurations, the cover case is formed with a cover side engaging portion, and the guide means of the case head has the cover side engaging portion. The liquid ejecting head is characterized in that a case-side engaging portion that engages with the head is formed.

According to the configuration of the fourth aspect of the invention, the cover case is formed with a cover side engaging portion, and the guide means of the case head has a case side engaging portion that engages with the cover side engaging portion. Is formed. For this reason, when the cover side engaging portion and the case side engaging portion are engaged, the positions of the cover case and the case head are fixed.
That is, the cover side adhesive portion of the cover case and the case side adhesive portion of the case head are adhered by an adhesive or the like and fixed by engagement of the cover side engaging portion and the case side engaging portion. As a result, the cover case and the case head are more firmly maintained in the bonded state.

  According to a fifth aspect of the present invention, in any one of the first to fourth configurations, the cover side adhesive portion is formed in a direction that intersects the cover side upper adhesive portion and the cover side upper adhesive portion on the same plane. A cover side adhesive portion, and a cover side bottom adhesive portion formed so as to intersect in the vertical direction on the same plane as the cover side side adhesive portion, and the case side adhesive portion is the cover side upper portion Corresponding to the adhesive part, the cover side side adhesive part, and the cover side bottom adhesive part, the cover side side part has a case side upper adhesive part, a case side side adhesive part, and a case side bottom adhesive part, respectively. The angle of the protrusion formed by the adhesive part and the cover side bottom part adhesive part and the angle of the receiving part formed by the case side part adhesive part and the case side bottom part adhesive part are substantially the same, and the case Head cover case entry plan Parts is a liquid ejecting head, wherein the projecting portion of the cover case has a structure for guiding to move close to or in contact with a direction with respect to the receiving part of the case head.

  According to the structure of 5th invention, the said cover case approach guide part of the said case head is moved so that the said protrusion part of the said cover case may adjoin or contact | abut with respect to the said receiving part of the said case head. It has a structure to guide. For this reason, when positioning the bonding position between the cover case and the case head, it is possible to easily and accurately position the cover case by moving the cover case so that the protruding portion and the receiving portion are aligned. it can.

  According to a sixth aspect of the present invention, there is provided a head unit having a nozzle forming portion having a nozzle opening for discharging a liquid, an actuator portion for discharging the liquid from the nozzle opening, and the actuator portion. A liquid ejecting head comprising: a flexible substrate to be connected; a fixed substrate that connects the flexible substrate; a case head that holds the fixed substrate; and a cover case that covers the fixed substrate held by the case head. In the liquid ejecting apparatus, the cover case of the liquid ejecting head includes a concave portion that accommodates the fixed substrate, and a cover-side adhesive portion that approaches or contacts the case head around the concave portion, The case head has a case-side adhesive portion corresponding to the cover-side adhesive portion, and the cover-side adhesive portion and the case-side adhesive portion. The surface of the side adhesive part has a planar shape, and the case head is provided with guiding means for projecting the cover side adhesive part and the case side adhesive part at opposite positions from the case head. The cover means is formed with a cover case entry guide portion for guiding the cover side adhesion portion to enter the case side adhesion portion while maintaining an angle. This is achieved by a liquid ejecting apparatus having an ejecting head.

According to the configuration of the sixth invention, similar to the configuration of the first invention, when the cover side adhesive portion and the case side adhesive portion of the liquid jet head are bonded with an adhesive or the like, these cover side adhesives The part and the case side adhesive part have a shape that allows easy application of an adhesive or the like.
Further, since the cover side adhesive portion is formed around the concave portion that accommodates the fixed substrate, the cover side adhesive portion is adhered to the case side adhesive portion with an adhesive or the like, so that the periphery of the fixed substrate The waterproofness can be increased.

In addition, when the cover side adhesive portion is brought into contact with the case side adhesive portion via an adhesive or the like, the cover side adhesive portion does not slide on the case side adhesive portion. Etc. are pushed forward in the sliding direction, and the thickness of the adhesive or the like between them does not vary depending on the location.
Therefore, it is difficult to produce a thin portion such as an adhesive that deteriorates the waterproof property, and the waterproof property can be improved as a whole.

  Further, whether or not the adhesive or the like is surely disposed between the cover-side adhesive portion and the case-side adhesive portion is performed by visually recognizing the adhesive or the like protruding from between the two. Even if it is bonded, the adhesive or the like does not protrude from the thin portion such as. For this reason, the adhesion state cannot be visually confirmed from the outside. However, according to the configuration of the present invention, since a thin portion such as an adhesive does not occur, the accuracy of confirmation by visually confirming the adhesion state is significantly improved. .

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

FIG. 1 is a schematic perspective view showing an ink jet recording apparatus (hereinafter referred to as “recording apparatus”) 100 according to an embodiment of a liquid ejecting apparatus of the invention.
As shown in FIG. 1, the recording apparatus 100 includes a carriage 101. The carriage 101 is guided by a guide member 104 via a timing belt 103 driven by a carriage motor 102 and reciprocally moves in the axial direction of the platen 105. It is configured to be.

For example, an ink jet recording head (hereinafter referred to as “recording head”) 300, which is a liquid ejecting head described later, is mounted on the side of the carriage 101 facing the recording sheet 200 in FIG. For example, a black ink cartridge 106 for supplying ink and a color ink cartridge 107 are detachably loaded.
The recording paper 200 in FIG. 1 is arranged in the print area P, and is configured such that ink is ejected by the recording head 300 to perform printing or the like.

  FIG. 2 is a schematic perspective view showing the main part of the recording head 300. As shown in FIG. 2, the recording head 300 includes a case head 310 and a cover case 311. Further, a cover head 340 is disposed at the bottom of the case head 310 in the figure, and the head unit 320 is accommodated in the cover head 340.

FIG. 3 is a schematic exploded perspective view of the recording head 300 of FIG. As shown in FIG. 3, the case head 310 has a needle 312 for guiding ink from the black ink cartridge 106 and the color ink cartridge 107 of FIG. 1 and a filter 313 for filtering the ink.
Further, the case head 310 holds, for example, a case head side substrate 314 that is a fixed substrate for connecting a flexible substrate 330 described later.
And it has the cover case 311 which covers the case side board | substrate 314 hold | maintained at the case head 310. FIG.

A head unit 320 is arranged below the case head 310. The head unit 320 has, for example, a nozzle plate 324 which is a nozzle forming portion in which nozzles for ejecting ink are formed at the bottom.
A supply plate 323 and a reservoir plate 322 for supplying ink and the like to the nozzle plate 324 are disposed on the nozzle plate 324.
On the reservoir plate 322, for example, an actuator 321 that is an actuator unit having a piezoelectric body that flexures and vibrates when a voltage is applied is disposed.
The nozzle plate 324, the supply plate 323, the reservoir plate 322, and the actuator 321 are bonded and integrated to form a head unit 320.
That is, when a voltage is applied to the actuator 321, the piezoelectric body is flexibly vibrated, and ink is ejected from the nozzles of the nozzle plate 324 by the vibration.

As shown in FIG. 3, a flexible substrate 330 that is connected to the actuator 321 and supplies power to the actuator 321 is disposed on the actuator 321 of the head unit 320 and between the case head 310 and the case head 310.
The flexible substrate 330 is connected to the case head side substrate 314 disposed in the case head 310 and is configured to receive power supply from the case head side substrate 314.
The integrated head unit 320 is bonded to the bottom of the case head 310 with the flexible substrate 330 to which power is supplied interposed therebetween.
As described above, the case head 310 and the head unit 320 are bonded with the flexible substrate 330 interposed therebetween, whereby the ink is smoothly supplied from the case head 310 side to the head unit 320 side.

By the way, when the case side substrate 314 to which the flexible substrate 330 or the like is connected to the case head 310 of FIG. 3 is disposed, the cover case 311 is then bonded and fixed to the case head 310.
4 is a schematic perspective view of the case head 310 of FIG. 3, and FIG. 5 is a schematic right side view of the case head 310 of FIG. 6 is a schematic partial enlarged view of an arrow P portion in FIG. 5, and FIG. 7 is a schematic perspective view of the cover case 311 in FIG.
As shown in FIGS. 3 and 4, the case head 310 has a case-side substrate placement portion 352 for placing the case-side substrate 314.
On the other hand, as shown in FIG. 7, the case side substrate housing which is a recess for housing the case side substrate 314 arranged in the case side substrate arranging portion 352 of FIG. Part 371.

Further, around the case substrate housing portion 371 of the cover case 311, there is a cover side adhesive portion that is bonded to and abuts the case head 310 of FIG. 4 via an adhesive. In other words, the cover side adhesive portion has, for example, a cover side upper adhesive surface 374 which is a cover side upper adhesive portion.
Further, in the direction intersecting with the cover-side upper adhesive surface 374, for example, in the direction orthogonal to the cover-side upper adhesive surface 374, for example, the cover-side left-side adhesive surface 375 and the cover-side right-side adhesive surface 376 is arranged.
That is, as shown in FIG. 7, a cover-side left-side adhesive surface 375 and a cover-side right-side adhesive surface 376 are formed downward from the left and right ends of the cover upper-side adhesive surface 374, respectively.

Further, for example, a cover-side left depth-side adhesive surface 377 and a cover-side right depth-side adhesive are bonded to the cover-side left-side adhesive surface 375 and the cover-side right-side adhesive surface 376 so as to intersect with each other in the vertical direction. Surface 378. That is, the cover side left depth side adhesive surface 377 and the cover side right depth side adhesive surface 378 are bent at right angles in the depth direction of FIG. 7 from the lower ends of the cover side left side adhesive surface 375 and the cover side right side adhesive surface 376. Is formed.
The protrusions 380a and 380b formed by the cover side left side adhesive surface 375 and the cover side right side adhesive surface 376 and the cover side left depth side adhesive surface 377 and the cover side right depth side adhesive surface 378 are formed at substantially right angles. ing.
Further, as shown in FIG. 7, a cover side heel side adhesive surface 379 is formed so as to connect the depth side ends of the cover side left depth side adhesive surface 377 and the cover side right depth side adhesive surface 378. Surfaces of the cover side upper adhesive surface 374, the cover side left adhesive surface 375, the cover side right adhesive surface 376, the cover side left depth side adhesive surface 377, the cover side right depth side adhesive surface 378, and the cover side heel side adhesive surface 379 Are each formed in an elongated shape with a narrow width, and the surface shape is a planar shape.

  On the other hand, as shown in FIG. 4, the case head 310 has a case-side adhesive portion corresponding to the cover-side adhesive portion such as the cover-side upper adhesive surface 374 of FIG. That is, the case side adhesive part is specifically, a cover side upper adhesive surface 374, a cover side left adhesive surface 375, a cover side right adhesive surface 376, a cover side left depth side adhesive surface 377, a cover side right depth side adhesive surface. 378 and the cover side heel side adhesive surface 379, corresponding to the case side upper adhesive portion, for example, the case side upper adhesive surface 356, the case side side adhesive portion, for example, the case side left adhesive surface 357, the case Side right measuring adhesive surface 358, case side bottom adhesive portion, for example, case side left depth side adhesive surface 359, case side right depth side adhesive surface 360, and case side near side adhesive surface 361 are arranged on case head 310. Has been.

Similar to the cover-side upper adhesive surface 374 and the like, the case-side upper adhesive surface 356 and the like are each formed in an elongated shape having a narrow width, and the surface shape is a planar shape. Further, the receiving portions 363a and 363b of FIGS. 4 and 5 formed by the case side left side adhesive surface 357 and the case side right side adhesive surface 358, the case side left depth side adhesive surface 359, and the case side right depth side adhesive surface 360. Is formed at a substantially right angle similar to the angle of the protrusions 380a and 380b in FIG.
As described above, the cover-side upper adhesive surface 374 of the cover case 311 shown in FIG. 7 is formed over the entire circumference around the case-side substrate housing portion 371, and the case-side upper adhesive surface 356 of the case head 310 corresponding thereto. Is also formed around the entire circumference of the case side substrate placement portion 352.
Therefore, when the cover-side upper adhesive surface 374 and the like of the cover case 311 and the case-side upper adhesive surface 356 and the like of the case head 310 are bonded with an adhesive, the case-side substrate disposed on the case-side substrate placement portion 352 of the case head 310 Since the periphery of 314 is adhered to the entire periphery with an adhesive, there is no gap between the cover case 311 and the case head 310, and the waterproofness is remarkably improved.

By the way, the case head 310 is a guide means for disposing the cover portion upper adhesive surface 374 of the cover case 311 and the case side upper adhesive surface 356 of the case head 310 at opposite positions, for example, a guide portion 353a, 353b is provided at two locations as shown in FIG. The guide portion 353a and the like are provided so as to protrude from the case head main body 351, and the side shape thereof is substantially U-shaped as shown in FIG.
As shown in FIG. 5, the guide portions 353 a and 353 b are, for example, oblique insertion guide surfaces 354 a and 354 b that are cover case entry guide portions. That is, the oblique insertion guide surface 354a and the like are formed so as to be inclined obliquely upward in FIG. 5 from the base end portion of the guide portion 353a and the like.

On the other hand, the cover case 311 of FIG. 7 is provided with cover case guide portions 372a and 372b that are guided portions that can move along the oblique insertion guide surface 354a and the like of FIG. Therefore, as described later, when the cover case 311 is brought close to the case head 310 for bonding, the cover case guide portion 372a of the cover case 311 is brought close to the oblique insertion guide surface 354a of the case head 310, etc. With this configuration, high-precision bonding is possible.
That is, the guide portion 353a and the like perform a function of guiding the cover side upper adhesive surface 374 of the cover case 311 so as to approach the case side upper adhesive surface 356 of the case head 310 while maintaining an angle. Yes.

Further, as shown in FIGS. 4 and 5, the cover case guide portion 372a and the like of FIG. 7 guided by the oblique insertion guide surface 354a and the like are provided at the base end portion (lower end portion of FIG. 5) of the guide portion 353a and the like. For example, fixed portions 362a and 362b which are guided holding portions to be held are formed.
As shown in FIG. 6, the fixing portion 362a and the like are notched in an L shape, and come into contact with an outer L-shaped portion such as a cover case guide portion 372a in FIG. 6 having a rectangular parallelepiped shape. It has a restricting portion 362aa and the like for restricting the movement of the cover case guide portion 372a and the like.
Therefore, the movement of the cover case guide portion 372a and the like of the cover case 311 held by the fixing portion 362a and the like of FIG. 6 in the arrow direction of FIG. 6 is restricted by the restriction portion 362aa and the cover case 310 is moved in the arrow direction. It is the structure which prevents coming out upward.

As shown in FIG. 7, the cover case 311 is provided with cover case claws 373a and 373b, for example, which are cover side engaging portions (the cover case claw 373a faces the cover case claw 373b). Formed on the surface).
On the other hand, as shown in FIG. 5, for example, engaging recesses 355 a and 355 b that are case side engaging portions that engage with the cover case claws 373 a and the like are formed in the guide portion 353 a and the like.
The engagement recesses 355a and the like are substantially U-shaped notches as shown in FIGS. 4 and 5, and the cover case claw 373a and the like of FIG. The position with 310 is fixed.
Further, as shown in FIG. 7, inclined surfaces 373aa and 373ba are formed on the surface of the cover case claw 373a (an inclined surface 373aa similar to the inclined surface 373ba is also formed on the cover case claw 373a not shown). ). For this reason, when the cover case claw 373a and the like are engaged with the engagement recess 355a and the like, the guide portion 353 is easily overridden.

The recording apparatus 100 having the recording head 300 according to the present embodiment is configured as described above. Hereinafter, a process of bonding the cover case 311 and the case head 310 in FIG. 7 will be described.
8 to 10 are schematic explanatory views showing a process of bonding the cover case 311 of FIG. 7 to the case head 310. First, the head unit 320 and the flexible substrate 330 shown in FIG. 3 are connected to the case-side substrate 314 and placed on the case-side substrate placement portion 352 of the case head 310.
Thereafter, the cover case 311 is bonded to the case head 310 so as to cover the case side substrate 314. That is, first, the case side upper adhesive surface 356, the case side left measuring adhesive surface 357, the case side right adhesive surface 358, the case side left depth adhesive surface 359, the case side right depth adhesive surface 360 and the case side shown in FIG. An adhesive is applied with a certain thickness on the front-side adhesive surface 361.
Specifically, for example, as shown in FIG. 8, the adhesive S is applied to the case side right depth side adhesive surface 360, the case side right side adhesive surface 358, and the like.

  At this time, since the surface of the case head 310 such as the case-side upper adhesive surface 356 is planar, it is easy to apply the adhesive S. In addition, the case-side upper bonding surface 356 of the corresponding cover case 311 has a planar shape, so that it can be easily bonded. Further, the case-side upper adhesive surface 356 of the case head 310 and the case-side upper adhesive surface 356 of the cover case 311 are disposed so as to completely surround the periphery of the case-side substrate 314 as shown in FIG. Therefore, after the bonding, the adhesive S is disposed between the cover case 311 and the case head 310, and the waterproofness is improved.

  In particular, when the recording apparatus 100 can be carried and the user carries it, the recording apparatus 100 is greatly tilted, and even if ink leaks from the ink cartridge needle 312 or the like in FIG. Does not reach the internal case side substrate 314 through a gap with the cover case 311. For this reason, it is possible to obtain a highly reliable recording apparatus 100 in which the case-side substrate 314 does not generate heat even when carried by a user.

Next, the cover case 311 of FIG. 7 is brought close to the case head 310 obliquely from above, and the cover case guide portion 372a and the like of the cover case 311 are inserted obliquely into the guide portion 353a and the like of the case head 310 as shown in FIG. It abuts on the guide surface 354a or the like.
Next, as shown in FIG. 9, the cover case guide portion 372a and the like of the cover case 311 are brought close to the case head 310 so as to follow the oblique insertion guide surface 354a and the like. At this time, the cover case claw 373a and the like of the cover case 311 ride on the guide portion 353a and the like, but the cover case claw 373a and the like can easily ride on the inclined surface 373a and the like.
Further, the cover case 311 comes close to the case head 310 along the direction of the arrow V in FIG. Therefore, for example, as shown in FIG. 9, the cover side left depth side adhesive surface 377 of the cover case 311 is close to the case side right depth side adhesive surface 360 of the case head 310, but until the adhesive position is reached, the case It is the structure which does not contact | abut to the side right depth side adhesion surface 360. FIG.

For this reason, the cover side left depth side adhesive surface 377 does not slide so as to rub on the case side right coasting side adhesive surface 360. That is, the adhesive S applied on the case side staring side adhesive surface 360 is pushed in the direction of the arrow X in FIG. 9, and the adhesive S is thickened on the back side as indicated by the arrow Y and the broken line in FIG. There is no. As shown by the broken line in FIG. 9, when the adhesive S is pushed inward, the thickness of the adhesive S on the near side (left side in the figure) is reduced correspondingly, and the thickness of the adhesive S as a whole becomes uneven. .
When the cover case 311 and the case head 310 are bonded in a state where the thickness of the adhesive S is not uniform in this way, the waterproof property of the portion where the thickness of the adhesive S is thin is reduced, and ink leakage as described above occurs. Ink may enter the inside from the portion where the waterproof property is lowered and reach the case side substrate 314 to generate heat.
However, in the present embodiment, the cover side left depth side adhesive surface 377 and the like of the cover case 311 do not slide on the case side right coast side adhesive surface 360 and the like. It is possible to prevent the thickness of the adhesive S applied to the film from becoming uneven, and the waterproofness is improved.

Further, as shown in FIG. 9, when the cover case 311 is moved toward the case head 310 in the direction of the arrow V, the protruding portion 372a and the like of the cover case 311 are brought close to the receiving portion 363a and the like of the case head 310. Will be moved to. For this reason, when an operator or the like places the cover case 311 on the case head 310, it can be accurately arranged by aligning the protruding portion 372a and the receiving portion 363a and the like.
That is, the bonding position of the cover case 311 with respect to the case head 310 can be easily and accurately determined.

FIG. 10 shows a state in which the cover case 311 is guided by the guide portion 353 a of the case head 310 and is in contact with the case head 310 via the adhesive S. At this time, the adhesive S is disposed, for example, between the cover side left depth side adhesive surface 377 and the case side right depth side adhesive surface 360, but the adhesive S protrudes not only between the two but also slightly outside. Amount.
This is because an administrator visually confirms the bonding state between the cover case 311 and the case head 310. That is, if an appropriate amount of the adhesive S is disposed between the two, the adhesive S protrudes outside, so that the protrusion of the adhesive S can be visually confirmed.
However, as described above, when the cover side left depth side adhesive surface 377 of the cover case 311 slides on the case side right depth side adhesive surface 360 and the thickness of the adhesive S is made nonuniform, the adhesive is actually bonded. Even if the agent S is arranged, it does not protrude outside, so that the manager can visually recognize the adhesion state, resulting in a defective product.
In this respect, in the present embodiment, since the thickness of the adhesive S does not become nonuniform, the management of the adhesive state by the administrator becomes easy.

  By the way, as shown in FIG. 10, when the cover case 311 is arranged on the case head 310 via the adhesive S, the cover case guide portion 373a of the cover case 311 gets over the guide portion 353a etc., and the guide portion 353a etc. Engage with the engaging recess 355a and the like. For this reason, the cover case 311 maintains the adhesive state by the adhesive S more firmly with respect to the case head 310.

  Further, as shown in FIG. 10, the cover case guide portion 372a and the like of the cover case 311 are fixed by the fixing portion 362a and the like after being guided by the oblique insertion guide surface 354a and the like of the case head 310. For this reason, after the cover case 311 is bonded to the case head 310, even if a force that moves upward in FIG. 10 is applied to the cover case 311, the movement is restricted by the restricting portion 362aa of the fixing portion 362, etc. This is the so-called retaining.

  The present invention is not limited to the above-described embodiment. Furthermore, the above-described embodiments may be combined with each other. The present invention is not limited to an ink jet recording apparatus, but a recording head used in an image recording apparatus such as a printer, a color material ejecting head used in manufacturing a color filter such as a liquid crystal display, an organic EL display, and an FED (surface emitting). Electrode material ejecting heads used for electrode formation such as displays), liquid ejecting apparatuses using liquid ejecting heads for ejecting liquids such as bioorganic ejecting heads used for biochip manufacturing, sample ejecting apparatuses as precision pipettes, etc. Applicable.

1 is a schematic perspective view showing an ink jet recording apparatus (hereinafter referred to as “recording apparatus”) according to an embodiment of a liquid ejecting apparatus of the invention. FIG. 2 is a schematic perspective view illustrating a main part of a recording head. FIG. 3 is a schematic exploded perspective view of the recording head of FIG. 2. It is a schematic perspective view of the case head of FIG. FIG. 5 is a schematic right side view of the case head of FIG. 4. FIG. 6 is a schematic partial enlarged view of an arrow P portion in FIG. 5. It is a schematic perspective view of the cover case of FIG. It is a schematic explanatory drawing which shows the process of adhering the cover case of FIG. 7 to a case head. It is another schematic explanatory drawing which shows the process of bonding the cover case of FIG. 7 to a case head. It is another schematic explanatory drawing which shows the process of bonding the cover case of FIG. 7 to a case head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Inkjet recording apparatus, 101 ... Carriage, 102 ... Carriage motor, 103 ... Timing belt, 104 ... Guide member, 105 ... Platen, 106 ... Black ink cartridge, 107: Color ink cartridge, 300 ... 120: Capping means, 121 ... Cap holder, 122 ... Cap member, 124 ... Slider, 125 ... Rotating arm, 128 / ..Air opening port, 130 ... suction pump, 140 ... wiping member, 200 ... recording paper, 300 ... ink jet recording head, 310 ... case head, 311 ... cover case, 312 ... Needle, 313 ... Filter, 314 ... Case side substrate, 320 ... Head unit 321 ... Actuator 322 ... Reservoir plate 323 ... Supply plate 324 ... Nozzle plate 330 ... Flexible substrate 340 ... Cover head 351 ... Case head body , 352... Case side substrate placement portion, 353 a, 353 b... Guide portion, 354 a, 354 b... Oblique insertion guide surface, 355 a, 355 b. Surface, 357... Case side left adhesive surface, 358. Case side right measuring adhesive surface, 359 .. case side left depth side adhesive surface, 360... Case side right depth side adhesive surface, 361.・ Case side front side adhesive surface, 362a, 362b... Fixing part, 362aa, 362ba... Regulating part, 363a, 363b... Receiving part, 371. Side substrate housing part, 372a, 372b ... cover case guide part, 373a, 373b ... cover case claw, 373aa, 373ba ... inclined surface, 374 ... cover side upper adhesive surface, 375 ... cover Left side adhesive surface, 376 ... Cover side right side adhesive surface, 377 ... Cover side left depth side adhesive surface, 378 ... Cover side right depth side adhesive surface, 379 ... Cover side side adhesive surface 380a, 380b ... protrusion.

Claims (6)

A nozzle forming portion having a nozzle opening for discharging liquid;
An actuator unit for discharging the liquid from the nozzle opening, and a head unit,
A flexible substrate connected to the actuator unit;
A fixed substrate for connecting the flexible substrate;
A case head for holding the fixed substrate;
A cover case that covers the fixed substrate held by the case head, and a liquid jet head comprising:
The cover case includes a recess for accommodating the fixed substrate;
A cover-side adhesive portion that is in proximity to or in contact with the case head around the recess,
The case head has a case side adhesive portion corresponding to the cover side adhesive portion,
The surface of the cover side adhesive part and the case side adhesive part are each planar.
The case head is provided with a guide means for projecting from the case head to dispose the cover side adhesive portion and the case side adhesive portion at opposing positions,
The liquid ejecting head is characterized in that the guide means is formed with a cover case entry guide portion for guiding the cover side adhesive portion to enter the case side adhesive portion while maintaining an angle. . The cover side adhesive portion is formed over the entire circumference around the recess,
The liquid ejecting head according to claim 1, wherein the case-side adhesive portion is also formed corresponding to the cover-side adhesive portion formed over the entire week. The cover case is formed with a guided portion that is movable along the cover case entry guide portion.
A guided holding portion that holds the guided portion guided by the cover case entry guide portion is formed on the base end side of the cover case entry guide portion,
The liquid ejecting head according to claim 1, wherein the guided holding unit is formed with a regulating unit that regulates the movement of the guided unit. A cover side engagement portion is formed in the cover case,
The liquid ejection according to claim 1, wherein a case side engaging portion that engages with the cover side engaging portion is formed in the guide means of the case head. head. The cover side adhesive portion includes a cover side upper adhesive portion,
A cover side portion adhesive portion formed in a direction intersecting with the cover side upper adhesive portion on the same surface;
A cover side bottom adhesive part formed so as to intersect in the vertical direction on the same plane as the cover side side adhesive part,
The case side adhesive portion corresponds to the cover side upper adhesive portion, the cover side side adhesive portion, and the cover side bottom adhesive portion, respectively, and corresponds to the case side upper adhesive portion, the case side side adhesive portion, and the case side bottom portion, respectively. Having an adhesive part,
The angle of the protrusion formed by the cover side side adhesive part and the cover side bottom part adhesive part and the angle of the receiving part formed by the case side side part adhesive part and the case side bottom part adhesive part are approximately The same,
The cover case entry guide portion of the case head is configured to guide the protruding portion of the cover case so as to move in a direction approaching or abutting against the receiving portion of the case head. The liquid ejecting head according to any one of claims 1 to 4. A nozzle forming portion having a nozzle opening for discharging liquid;
An actuator unit for discharging the liquid from the nozzle opening, and a head unit,
A flexible substrate connected to the actuator unit;
A fixed substrate for connecting the flexible substrate;
A case head for holding the fixed substrate;
A liquid ejecting apparatus having a liquid ejecting head comprising: a cover case that covers the fixed substrate held by the case head;
The cover case of the liquid ejecting head includes a recess that houses the fixed substrate;
A cover-side adhesive portion that is in proximity to or in contact with the case head around the recess,
The case head has a case side adhesive portion corresponding to the cover side adhesive portion,
The surface of the cover side adhesive part and the case side adhesive part are each planar.
The case head is provided with a guide means for projecting from the case head to dispose the cover side adhesive portion and the case side adhesive portion at opposing positions,
The liquid ejecting head is characterized in that the guide means is formed with a cover case entry guide portion for guiding the cover side adhesive portion to enter the case side adhesive portion while maintaining an angle. A liquid ejecting apparatus.

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