JP2016159455A - Liquid storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of the conventional liquid storage container in which: it is hard to easily adjust a pressure in the liquid storage container.SOLUTION: A liquid storage container is capable of supplying a liquid in a liquid storage section to a liquid jet device. The liquid storage container includes: a case; a flexible member; a planar pressure receiving section 111 disposed between the case and the flexible member; and a first energization member 191 and a second energization member 192, which are connected to the pressure receiving section 111. The first energization member and the second energization member have first leg sections 211 and 231, respectively. In the liquid storage container, reinforcement sections 281 and 282 are formed to straddle between the pressure receiving section 111 and the first leg sections 211 and 231.SELECTED DRAWING: Figure 16

Description

  The present invention relates to a liquid container and the like.

  In an ink jet printer that is an example of a liquid ejecting apparatus, printing is performed on a print medium by ejecting ink that is an example of a liquid from a print head onto a print medium such as a print sheet. Ink jet printers are known that receive ink supply from an ink cartridge, which is an example of a liquid container. In such an ink cartridge, conventionally, there is a form in which ink is stored in a liquid storage portion formed by joining a sheet-like (layered) member to a container-like case (see, for example, Patent Document 1). The ink cartridge described in Patent Document 1 employs a configuration in which a sheet-like member is urged by a spring disposed in the liquid container. The negative pressure in the liquid container is maintained by this spring. This spring is made of stainless steel, and has a configuration in which a force receiving portion that receives a load from a sheet-like member and a spring portion that biases the force receiving portion are integrally formed.

JP-A-11-240171

  In the spring described in Patent Document 1, when the force generated by the spring (hereinafter referred to as spring force) is increased, it is conceivable to change the material and plate thickness of the spring. However, in this spring, since the spring portion and the force receiving portion are integrally formed, if the material or plate thickness of the spring is changed to increase the spring force, the material or plate thickness of the force receiving portion also changes. End up. If the material and plate thickness of the force receiving portion that do not contribute to the generation of the spring force change, it is likely to cause a wasteful cost increase. For this reason, in the spring described in Patent Document 1, it is difficult to increase the spring force without changing the spring material and plate thickness. Therefore, the conventional liquid container described in Patent Document 1 has a problem that it is difficult to easily adjust the pressure in the liquid container.

  The present invention can solve at least the above-described problems and can be realized as the following forms or application examples.

  Application Example 1 A liquid storage container having a liquid storage section capable of storing a liquid and capable of supplying the liquid in the liquid storage section to a liquid ejecting apparatus, and constituting a part of an inner wall of the liquid storage section A flexible member that has flexibility and forms at least a part of the remaining inner wall of the liquid storage portion, and the case and the flexible member in the liquid storage portion, A pressure receiving member disposed between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and the pressure receiving member is attached from the case side toward the flexible member side. A first urging member capable of being urged, and provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and the pressure receiving member is attached from the case side toward the flexible member side. A second biasing member capable of biasing, and the pressure receiving member is a plate The first urging member and the second urging member are each connected to the pressure receiving member and extend in a state inclined with respect to the pressure receiving member, and the first urging member, A second leg connected to the first leg on the side opposite to the pressure receiving member side of the one leg and extending in an inclined state with respect to the pressure receiving member, the first leg and the second A connecting portion that connects the leg portion, the first leg portion is inclined toward the case side from the pressure receiving member side, and the second leg portion is the first leg portion. The reinforcing portion is inclined from the side toward the case side and is inclined in the direction opposite to the inclination direction of the first leg portion so as to straddle the pressure receiving member and the first leg portion. A liquid container characterized by that.

  In this liquid container, the spring force of the first leg is strengthened by the reinforcing part formed across the pressure receiving member and the first leg. Thereby, the pressure in the liquid container can be easily adjusted.

  Application Example 2 A liquid storage container having a liquid storage section capable of storing a liquid and capable of supplying the liquid in the liquid storage section to a liquid ejecting apparatus, and constituting a part of an inner wall of the liquid storage section A flexible member that has flexibility and forms at least a part of the remaining inner wall of the liquid storage portion, and the case and the flexible member in the liquid storage portion, A pressure receiving member disposed between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and the pressure receiving member is attached from the case side toward the flexible member side. A first urging member capable of being urged, and provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and the pressure receiving member is attached from the case side toward the flexible member side. A second biasing member capable of biasing, and the pressure receiving member is a plate The first urging member and the second urging member are each connected to the pressure receiving member and extend in a state inclined with respect to the pressure receiving member, and the first urging member, A second leg connected to the first leg on the side opposite to the pressure receiving member side of the one leg and extending in an inclined state with respect to the pressure receiving member, the first leg and the second A connecting portion that connects the leg portion, the first leg portion is inclined toward the case side from the pressure receiving member side, and the second leg portion is the first leg portion. Inclined in a direction approaching the case side from the side, and inclined in the direction opposite to the inclination direction of the first leg portion, and a reinforcing portion is formed so as to straddle the connecting portion and the first leg portion A liquid container characterized by that.

  In this liquid container, the spring force of the first leg portion is strengthened by the reinforcing portion formed across the connection portion and the first leg portion. Thereby, the pressure in the liquid container can be easily adjusted.

  Application Example 3 In the above-described liquid container, the reinforcing portion has a shape in which a part of the first leg and a part of the pressure receiving member are convex toward the case side, or A liquid container characterized by being deformed so as to have a convex shape opposite to the direction approaching the case side.

  In this liquid container, since the reinforcing portion can be formed by deforming a part of the first leg and a part of the pressure receiving member, the spring force of the first leg can be easily increased.

  Application Example 4 In the above-described liquid container, the reinforcing portion has a shape in which a part of the first leg and a part of the connection portion are convex toward the case side, or the A liquid container characterized by being deformed so as to have a convex shape opposite to the direction approaching the case side.

  In this liquid container, since the reinforcing part can be formed by deforming a part of the first leg part and a part of the connecting portion, the spring force of the first leg part can be easily increased.

  Application Example 5 In the liquid container described above, when the reinforcing portion formed so as to straddle the pressure-receiving member and the first leg portion is defined as a first reinforcing portion, the connection location and the first A liquid container, wherein the second reinforcing portion is formed so as to extend over one leg portion.

  In this liquid container, since the first reinforcing portion and the second reinforcing portion are formed on the first leg portion, the spring force of the first leg portion can be further increased.

  Application Example 6 The liquid storage container according to the above-described liquid storage container, wherein a third reinforcing portion is formed at the connection portion.

  In this liquid container, a third reinforcing portion is formed at the connection location. Here, in the first urging member and the second urging member, the first leg portion and the second leg portion are inclined in opposite directions, respectively. For this reason, when a spring force is generated in the first urging member and the second urging member, a twisting force is generated at a connecting portion connecting the first leg portion and the second leg portion, and the first urging member and The spring force of the second urging member is weakened. On the other hand, in this liquid container, since the 3rd reinforcement part is formed in the connection location, the twist of a connection location can be reduced. Thereby, the spring force of a 1st biasing member and a 2nd biasing member can be strengthened.

  Application Example 7 In the liquid container described above, a fourth reinforcing portion is formed so as to straddle the connection portion and the second leg portion, and the first reinforcing portion is a part of the first leg portion. And a part of the pressure-receiving member are deformed so as to have a convex shape toward the case side, and the second reinforcing part is a part of the first leg part and the connection part Is deformed to have a shape that is convex toward the case side, and the third reinforcing portion is formed so that a part of the connection portion is convex toward the case side. The fourth reinforcing portion has a shape in which a part of the second leg part and the other part of the connecting portion are convex toward the case side. And the third reinforcing portion includes the second reinforcing portion and the second reinforcing portion. 4 connected to the reinforcing portion, the liquid container, characterized in that.

  In this liquid container, since the fourth reinforcing portion is formed on the second leg portion, the spring force of the first urging member and the second urging member can be further increased. In this liquid container, the convex direction of the first reinforcing part, the convex direction of the second reinforcing part, the convex direction of the third reinforcing part, and the convex direction of the fourth reinforcing part are aligned. Can do. Thereby, the process of a 1st reinforcement part, a 2nd reinforcement part, a 3rd reinforcement part, and a 4th reinforcement part can be simplified. Moreover, in this liquid container, since the 3rd reinforcement part is connected to the 2nd reinforcement part and the 4th reinforcement part, the twist of a connection location can be reduced further.

  Application Example 8 In the above-described liquid container, a fourth reinforcing portion is formed so as to straddle the connecting portion and the second leg portion, and the first reinforcing portion is a part of the first leg portion. And a part of the pressure receiving member are deformed so as to have a convex shape opposite to the direction approaching the case side, and the second reinforcing part is a part of the first leg part. And a part of the connecting portion is deformed to have a shape that is convex in a direction opposite to the direction approaching the case side, and the third reinforcing portion is a part of the connecting portion, It is deformed to have a shape that is convex in the opposite direction to the direction approaching the case side, and the fourth reinforcing portion is a part of the second leg portion and the other part of the connecting portion, It is deformed to have a shape that is convex in the opposite direction to the direction approaching the case side. The third reinforcing portion is connected to said fourth reinforcing portion and the second reinforcing portion, the liquid container, characterized in that.

  In this liquid container, since the fourth reinforcing portion is formed on the second leg portion, the spring force of the first urging member and the second urging member can be further increased. In this liquid container, the convex direction of the first reinforcing part, the convex direction of the second reinforcing part, the convex direction of the third reinforcing part, and the convex direction of the fourth reinforcing part are aligned. Can do. Thereby, the process of a 1st reinforcement part, a 2nd reinforcement part, a 3rd reinforcement part, and a 4th reinforcement part can be simplified. Moreover, in this liquid container, since the 3rd reinforcement part is connected to the 2nd reinforcement part and the 4th reinforcement part, the twist of a connection location can be reduced further.

  Application Example 9 In the liquid container described above, the first reinforcing portion has a shape in which a part of the first leg and a part of the pressure receiving member are convex toward the case side. The second reinforcing part is deformed so that a part of the first leg part and a part of the connecting portion have a convex shape toward the case side. A liquid container characterized by being a thing.

  In this liquid container, the convex direction of the first reinforcing part and the convex direction of the second reinforcing part can be aligned. Thereby, the process of a 1st reinforcement part and a 2nd reinforcement part can be simplified.

  Application Example 10 In the above-described liquid container, the first reinforcing portion projects a part of the first leg and a part of the pressure receiving member in a direction opposite to a direction approaching the case side. The second reinforcing portion is configured to project a part of the first leg part and a part of the connecting portion in a direction opposite to the direction approaching the case side. A liquid container characterized by being deformed to have a shape.

  In this liquid container, the convex direction of the first reinforcing part and the convex direction of the second reinforcing part can be aligned. Thereby, the process of a 1st reinforcement part and a 2nd reinforcement part can be simplified.

  Application Example 11 In the above-described liquid container, the first reinforcing portion projects a part of the first leg part and a part of the pressure receiving member in a direction opposite to a direction approaching the case side. The second reinforcing portion has a shape in which a part of the first leg and a part of the connecting portion are convex in a direction approaching the case side. A liquid container characterized by being deformed as described above.

  In this liquid container, the convex direction of the first reinforcing portion and the convex direction of the second reinforcing portion can be opposite to each other.

  Application Example 12 In the liquid container described above, the first reinforcing portion has a shape in which a part of the first leg portion and a part of the pressure receiving member are convex toward the case side. The second reinforcing portion has a shape in which a part of the first leg portion and a part of the connection portion are convex in a direction opposite to a direction approaching the case side. A liquid container characterized by being deformed as described above.

  In this liquid container, the convex direction of the first reinforcing portion and the convex direction of the second reinforcing portion can be opposite to each other.

FIG. 2 is a perspective view illustrating a configuration of a liquid ejection system in the present embodiment. Sectional drawing which shows the holder in this embodiment. The perspective view which shows the cartridge in this embodiment. FIG. 3 is an exploded perspective view illustrating a configuration of a cartridge in the present embodiment. The top view which shows the 1st case in this embodiment. The perspective view which shows the 1st case in this embodiment. The figure explaining the structure in the 1st case in this embodiment. The figure which shows the state which mounted | wore the cartridge in this embodiment with the cartridge. FIG. 3 is a cross-sectional view schematically showing the inside of the cartridge in the present embodiment. FIG. 3 is a perspective view showing an urging plate in Embodiment 1. The exploded view when the urging | biasing board in Example 1 is cut | disconnected into several site | parts. The perspective view which shows the urging | biasing board and 1st case in Example 1. FIG. FIG. 3 is a perspective view illustrating an outer shape of an urging plate according to the first embodiment. FIG. 3 is a plan view showing an outer shape of an urging plate in the first embodiment. FIG. 3 is a perspective view showing an urging plate in Embodiment 1. FIG. 3 is a perspective view showing an urging plate in Embodiment 1. FIG. 3 is a plan view showing an urging plate in Embodiment 1. Sectional drawing in the AA in FIG. FIG. 6 is a plan view showing an urging plate in Embodiment 2. FIG. 9 is a plan view showing an urging plate in Embodiment 3. FIG. 9 is a plan view showing an urging plate in Example 4. The enlarged view of the B section in FIG. The enlarged view of the C section in FIG. FIG. 9 is a plan view showing an urging plate in Embodiment 5. The enlarged view of the D section in FIG. The enlarged view of the E section in FIG.

  The embodiment will be described with reference to the drawings, taking a liquid ejection system as an example. In addition, in each drawing, in order to make each structure the size which can be recognized, the structure and the scale of a member may differ.

  As illustrated in FIG. 1, the liquid ejecting system 1 according to the present embodiment includes a printer 5 that is an example of a liquid ejecting apparatus and a cartridge 7 that is an example of a liquid storage container. The cartridge 7 can store ink which is an example of a liquid. In FIG. 1, XYZ axes, which are coordinate axes orthogonal to each other, are attached. The XYZ axes are also attached to the drawings shown thereafter as necessary. In the present embodiment, the state in which the printer 5 is arranged on a horizontal plane (XY plane) defined by the X axis and the Y axis is the usage state of the printer 5. The Z-axis direction is a direction orthogonal to a horizontal plane. When the printer 5 is in use, the Z-axis direction is the vertical direction. When the printer 5 is in use, the −Z-axis direction is a vertically downward direction in FIG. 1. In each of the XYZ axes, the direction of the arrow indicates a + (positive) direction, and the direction opposite to the direction of the arrow indicates a-(negative) direction.

  The printer 5 has a sub-scan feed mechanism, a main scan feed mechanism, and a head drive mechanism. The sub-scan feed mechanism transports the printing paper P in the Y-axis direction using a paper feed roller 11 powered by a paper feed motor (not shown). The main scanning feed mechanism uses the power of the carriage motor 13 to reciprocate the carriage 17 connected to the drive belt 15 along the X axis. The head drive mechanism drives the print head 19 provided in the carriage 17 to execute ejection of ink as liquid and dot formation. The printer 5 further includes a control unit 21 for controlling each mechanism described above. The print head 19 is connected to the control unit 21 via the flexible cable 23.

  Here, the direction along the X-axis is not limited to a direction completely parallel to the X-axis, and includes directions inclined due to errors, tolerances, etc., except for a direction orthogonal to the X-axis. Similarly, the direction along the Y-axis is not limited to a direction completely parallel to the Y-axis, and includes directions inclined due to errors, tolerances, etc., except for a direction orthogonal to the Y-axis. The direction along the Z-axis is not limited to a direction completely parallel to the Z-axis, and includes directions inclined due to errors, tolerances, etc., except for a direction orthogonal to the Z-axis. In other words, the direction along any axis or plane is not limited to a direction completely parallel to any axis or plane, but may be due to errors, tolerances, etc., except for a direction perpendicular to any axis or plane. Including tilted direction.

  The carriage 17 includes a holder 25 and a print head 19. The holder 25 is configured so that a plurality of cartridges 7 can be mounted, and is disposed on the upper side of the print head 19. In this embodiment, six types of cartridges 7 of black, yellow, magenta, cyan, light magenta, and light cyan are mounted on the holder 25 one by one. Each of the six cartridges 7 is configured to be detachable from the holder 25. The type of cartridge 7 is not limited to the above six types, and other arbitrary types can be adopted. Further, the number of cartridges 7 that can be mounted in the holder 25 is not limited to six, and any one or more cartridges can be adopted. The print head 19 functions as a liquid ejecting unit that ejects ink by ejecting ink.

  As shown in FIG. 2, an introduction portion 33 is provided inside the holder 25. In FIG. 2, a cross section when the holder 25 is cut along the YZ plane is shown.

  Here, the X axis, the Y axis, and the Z axis in FIG. 2 correspond to the X axis, the Y axis, and the Z axis for the liquid ejection system 1 shown in FIG. That is, the X axis, the Y axis, and the Z axis in FIG. 2 mean the X axis, the Y axis, and the Z axis when the holder 25 is mounted on the liquid ejection system 1. After that, even when the X axis, Y axis, and Z axis are attached to the drawings showing the components and units of the liquid ejecting system 1, the components and units are mounted in the liquid ejecting system 1. The X axis, the Y axis, and the Z axis are meant.

  In FIG. 1, a plurality of cartridges 7 are arranged inside the holder 25 along the X axis. However, the direction in which the plurality of cartridges 7 are arranged is not limited to this. For example, a form in which a plurality of cartridges 7 are arranged along the Y axis inside the holder 25 may be employed. In this case, in the present specification, the description of the holder 25 and the cartridge 7 is interpreted in a state where the X axis and the Y axis are replaced with each other.

  The ink in the cartridge 7 is supplied to the printer 5 from the introduction part 33 of the holder 25. The introduction part 33 includes a flow path 51, a cylindrical part 53, a filter 55, and a packing 57. The flow path 51 is a passage for the ink supplied from the cartridge 7 and is provided as an opening penetrating the bottom portion 25A. The cylindrical portion 53 is provided on the bottom portion 25A and protrudes from the bottom portion 25A in a direction that is convex in the Z-axis direction. The cylindrical portion 53 surrounds the flow path 51 inside the holder 25. The filter 55 is placed on the tubular portion 53 and covers the opening inside the holder 25 of the flow path 51 from the tubular portion 53 side. The packing 57 is provided on the bottom portion 25 </ b> A, and surrounds the cylindrical portion 53 inside the holder 25. The packing 57 is made of an elastic material such as rubber or elastomer.

  The cartridge 7 has a case 61 as shown in FIG. The case 61 constitutes the outer shell of the cartridge 7. Case 61 includes a first case 62 and a second case 63. In the present embodiment, the first case 62 and the second case 63 constitute an outer shell of the cartridge 7. As shown in FIG. 4, the first case 62 includes a first wall 71, a second wall 72, a third wall 73, a fourth wall 74, a fifth wall 75, a sixth wall 76, 7 walls 77. The second wall 72 to the seventh wall 77 intersect the first wall 71, respectively. The second wall 72 to the seventh wall 77 respectively protrude from the first wall 71 in the −X axis direction, that is, from the first wall 71 toward the second case 63.

  The second wall 72 and the third wall 73 are provided at positions facing each other across the first wall 71 along the Z axis. The fourth wall 74 and the fifth wall 75 are provided at positions facing each other across the first wall 71 along the Y axis. The fourth wall 74 and the fifth wall 75 intersect the third wall 73, respectively. The fourth wall 74 intersects the second wall 72 on the side opposite to the third wall 73 side.

  The sixth wall 76 intersects the fifth wall 75 along the Z axis on the second wall 72 side of the fifth wall 75, that is, on the side opposite to the third wall 73 side of the fifth wall 75. The seventh wall 77 intersects the sixth wall 76 on the opposite side of the sixth wall 76 from the fifth wall 75 side. The seventh wall 77 intersects the second wall 72 on the opposite side of the second wall 72 from the fourth wall 74 side. The sixth wall 76 is inclined with respect to each of the fifth wall 75 and the second wall 72. The sixth wall 76 is inclined so as to approach the fourth wall 74 as it approaches the second wall 72 side from the third wall 73 side.

  With the above configuration, the first wall 71 is surrounded by the second wall 72 to the seventh wall 77. The second wall 72 to the seventh wall 77 protrude from the first wall 71 in the −X axis direction. For this reason, the first case 62 is configured in a concave shape by the second wall 72 to the seventh wall 77 with the first wall 71 as the bottom. The first wall 71 to the seventh wall 77 constitute a recess 65. The concave portion 65 is configured to be concave in the X-axis direction. The recess 65 opens in the −X axis direction, that is, toward the second case 63 side. The recess 65 is closed by a sheet member 107 described later. Then, ink is stored in the recess 65 that is blocked by the sheet member 107. For this reason, the concave portion 65 functions as an ink containing portion. Hereinafter, the inner surface of the recess 65 may be referred to as an inner surface 67.

  As shown in FIG. 5, the first case 62 is provided with a joint 81 along the contour of the recess 65. The joint portion 81 is provided along the second wall 72 to the seventh wall 77. In FIG. 5, the joint 81 is hatched for easy understanding of the configuration.

  Further, as shown in FIG. 4, the second wall 72 is provided with a supply hole 85 penetrating between the inside of the recess 65 and the outside of the first case 62. The ink stored in the recess 65 is discharged from the supply hole 85 to the outside of the cartridge 7. Further, on the opposite side of the second wall 72 from the concave portion 65 side, that is, outside the second wall 72, as shown in FIG. The surrounding wall 86 protrudes from the second wall 72 toward the side opposite to the third wall 73 side (−Z axis direction). The surrounding wall 86 surrounds the supply hole 85 from the outside.

  Further, as shown in FIG. 4, the cartridge 7 includes a valve unit 101, an urging plate 104, and a seat member 107. The sheet member 107, which is an example of a flexible member, is formed of a synthetic resin (for example, nylon or polypropylene) and has flexibility. The sheet member 107 is provided on the first case 62 side of the second case 63. The sheet member 107 is joined to the joining portion 81 of the first case 62. In the present embodiment, the sheet member 107 is joined to the joining portion 81 by welding. Thereby, the recess 65 of the first case 62 is closed by the sheet member 107. A region surrounded by the recess 65 and the sheet member 107 is called a liquid storage unit 109.

  Then, the ink is stored in the concave portion 65 blocked by the sheet member 107, that is, in the liquid storage portion 109. For this reason, in this embodiment, the sheet member 107 constitutes a part of the inner wall of the liquid storage unit 109. The first case 62 also constitutes a part of the inner wall of the liquid storage unit 109. As described above, the sheet member 107 has flexibility. For this reason, the volume of the liquid container 109 can be changed. The sheet member 107 is joined to the first case 62 in a state where the sheet member 107 is stretched in advance along the inner surface 67 of the recess 65 so as to easily follow the change in the volume of the liquid storage unit 109.

  As shown in FIG. 4, the urging plate 104 is provided on the first case 62 side of the sheet member 107 and is accommodated in the liquid accommodating portion 109. The biasing plate 104 is formed of a plate material such as a stainless steel plate, for example. The urging plate 104 includes a pressure receiving portion 111 that is an example of a pressure receiving member, and an urging portion 112. The pressure receiving portion 111 has a plate shape and is provided on the urging plate 104 on the sheet member 107 side. For this reason, the pressure receiving portion 111 can be regarded as being interposed between the urging portion 112 and the sheet member 107. In the liquid storage unit 109, the pressure receiving unit 111 is in contact with the sheet member 107.

  The urging unit 112 urges the pressure receiving unit 111 toward the sheet member 107 side. In other words, the urging unit 112 urges the pressure receiving unit 111 in the −X axis direction. That is, the urging unit 112 urges the pressure receiving unit 111 in a direction in which the volume of the liquid storage unit 109 is increased. The second case 63 is provided on the side opposite to the pressure receiving portion 111 side of the sheet member 107. The second case 63 is attached to the first case 62 so as to cover the sheet member 107. Thereby, the sheet member 107 is protected from the outside.

  In this embodiment, the urging plate 104 is formed by integrally molding the pressure receiving portion 111 and the urging portion 112 from one plate material. However, the configuration of the urging plate 104 is not limited to this. As the urging plate 104, for example, a configuration in which the pressure receiving portion 111 and the urging portion 112, which are formed separately from each other, are integrally formed by welding, bonding, screwing, or the like may be employed. Further, as the urging plate 104, for example, a configuration in which the pressure receiving portion 111 and the urging portion 112 are accommodated in the liquid accommodating portion 109 while being separated from each other may be employed.

  The valve unit 101 is provided inside the recess 65. The sheet member 107 covers the recess 65 together with the valve unit 101. A vent hole 114 is formed in a portion of the seat member 107 that overlaps the valve unit 101. The vent hole 114 is closed by the valve unit 101. The second case 63 is provided with an air communication hole 113. The space between the sheet member 107 and the second case 63 communicates with the outside of the cartridge 7 through the air communication hole 113. For this reason, air is interposed in the space between the sheet member 107 and the second case 63. The space between the sheet member 107 and the second case 63 is called an atmospheric chamber 115 (described later). The atmosphere communication hole 113 communicates with the atmosphere chamber 115.

  When the ink in the liquid storage unit 109 decreases, the valve unit 101 is opened and the vent hole 114 is opened. For this reason, the air outside the cartridge 7 can flow into the liquid storage portion 109 through the air communication hole 113, the air chamber 115, and the vent hole 114. When the pressure drop in the liquid storage unit 109 is reduced by the air flowing into the liquid storage unit 109, the valve unit 101 is closed. Thereby, the vent hole 114 is blocked by the valve unit 101. By such an operation, the pressure of the liquid storage unit 109 can be maintained in an appropriate pressure range suitable for supplying ink to the print head 19.

  Further, as shown in FIG. 4, the cartridge 7 includes a leaf spring 131, a foam 133, and a filter 135. Here, as shown in FIG. 6, the first case 62 is recessed from the outside of the second wall 72 into the recessed portion 65 in the region surrounded by the surrounding wall 86 and overlapping the supply hole 85. A concave portion 137 is provided. The leaf spring 131 and the foam 133 are housed in the recess 137 as shown in FIG. The filter 135 is provided in a region surrounded by the surrounding wall 86 and covers the recess 137 from the outside of the second wall 72. As the filter 135, for example, a film material having a through-hole formed by pressing or the like, an asymmetric membrane such as an MMM membrane manufactured by PALL, for example, a symmetric membrane such as a woven fabric, or the like can be employed.

  As shown in FIG. 6, a circuit board 141 is provided on the opposite side of the sixth wall 76 from the concave portion 65 side, that is, outside the sixth wall 76. The circuit board 141 extends along the sixth wall 76. For this reason, the circuit board 141 is inclined with respect to each of the second wall 72 and the fifth wall 75. The circuit board 141 is inclined so as to approach the fourth wall 74 as it approaches the second wall 72 side from the third wall 73 side. A plurality of terminals 143 that are in contact with the contact mechanism 145 (FIG. 2) of the holder 25 are provided on the surface of the circuit board 141 opposite to the sixth wall 76 side. A storage device (not shown) such as a nonvolatile memory is provided on the sixth wall 76 side of the circuit board 141. The plurality of terminals 143 are electrically connected to the storage device.

  In a state where the cartridge 7 is mounted in the holder 25, the plurality of terminals 143 are in electrical contact with the contact mechanism 145 shown in FIG. The contact mechanism 145 is electrically connected to the control unit 21 via the flexible cable 23 (FIG. 1). The contact mechanism 145 and the storage device of the cartridge 7 are electrically connected via the circuit board 141, so that various information can be transmitted between the control unit 21 and the storage device of the cartridge 7.

  As shown in FIG. 8, the cartridge 7 having the above-described configuration has the surrounding wall 86 abutting against the packing 57 in a state where it is mounted on the holder 25, and the cylindrical portion 53 is inserted into the region surrounded by the surrounding wall 86. The That is, the surrounding wall 86 surrounds the flow path 51 from the outside of the cylindrical portion 53. In the region surrounded by the surrounding wall 86, the filter 135 comes into contact with the filter 55. Thereby, the ink in the liquid storage unit 109 can be supplied from the filter 55 to the flow path 51 through the supply hole 85 (FIG. 7), the foam 133 (FIG. 7), and the filter 135 (FIG. 8).

  At this time, the surrounding wall 86 is in contact with the packing 57 in a state of surrounding the flow path 51 from the outside of the cylindrical portion 53. Thereby, the airtightness of the space enclosed by the surrounding wall 86 and the packing 57 is improved. For this reason, when ink is supplied from the cartridge 7 to the flow path 51, ink spilled outside the area surrounded by the cylindrical portion 53 is blocked by the packing 57 and the surrounding wall 86.

  The flow of ink and the flow of air in the cartridge 7 in this embodiment will be described. In the cartridge 7, the ink 161 is stored in the liquid storage portion 109 partitioned by the first case 62 and the sheet member 107 as shown in FIG. 9A. The valve unit 101 (FIG. 4) is provided in the liquid storage unit 109. The valve unit 101 includes a cover valve 163, a lever valve 165, and a spring member 167 shown in FIG.

  The cover valve 163 is provided with an air introduction port 171. The air introduction port 171 passes through the cover valve 163. The air introduction port 171 functions as a communication path in the cartridge 7 that allows the inside of the liquid storage unit 109 to communicate with the air chamber 115 outside the liquid storage unit 109. The lever valve 165 is provided on the opposite side of the cover valve 163 from the second case 63 side. The lever valve 165 includes a valve part 173 and a lever part 175. The valve portion 173 overlaps with the air introduction port 171 of the cover valve 163. The lever portion 175 extends from the valve portion 173 into a region between the pressure receiving portion 111 and the inner surface 67 of the first wall 71. The spring member 167 is provided on the side opposite to the cover valve 163 side of the lever valve 165. The spring member 167 biases the valve portion 173 of the lever valve 165 toward the cover valve 163 side. Thereby, the air introduction port 171 of the cover valve 163 is blocked by the valve portion 173. Hereinafter, the state where the air introduction port 171 is blocked by the valve portion 173 is expressed as the valve unit 101 being closed.

  As the ink 161 in the liquid storage portion 109 is consumed, the pressure receiving portion 111 is displaced toward the inner surface 67 side of the first wall 71 as shown in FIG. 9B. When the pressure receiving portion 111 is displaced toward the inner surface 67 side of the first wall 71, the pressure receiving portion 111 pushes the lever portion 175 toward the inner surface 67 side of the first wall 71. As a result, the posture of the valve portion 173 changes, and a gap is generated between the valve portion 173 and the cover valve 163. Thereby, the air introduction port 171 and the liquid storage unit 109 communicate with each other. In the following, a state in which the air introduction port 171 and the liquid storage portion 109 communicate with each other due to the occurrence of a gap between the valve portion 173 and the cover valve 163 is expressed as the valve unit 101 being in an open state. When the valve unit 101 is in an open state, the atmosphere in the atmosphere chamber 115 outside the liquid storage unit 109 flows into the liquid storage unit 109 through the atmosphere introduction port 171.

  As described above, the pressure receiving portion 111 is urged toward the second case 63 by the urging portion 112. For this reason, when the atmosphere flows into the interior of the liquid storage unit 109 through the atmosphere introduction port 171, the pressure receiving unit 111 is urged by the urging force from the urging unit 112 as shown in FIG. Displace toward the side. That is, when the atmosphere flows into the liquid storage unit 109 through the air introduction port 171, the volume of the liquid storage unit 109 is increased as compared with the state illustrated in FIG. 9B. Thereby, the negative pressure in the liquid container 109 in a pressure (negative pressure) state lower than the atmospheric pressure is reduced (approaches the atmospheric pressure). When a certain amount of air is introduced into the liquid storage unit 109, the pressure receiving unit 111 is separated from the lever unit 175. Thereby, the valve part 173 closes the air introduction port 171. That is, the valve unit 101 is closed. As described above, when the negative pressure in the liquid storage unit 109 increases with the consumption of the ink 161 in the liquid storage unit 109, the lever valve 165 is temporarily opened to appropriately set the pressure in the liquid storage unit 109. It is possible to maintain the pressure range within a wide range.

  Details of the urging plate 104 will be described for each embodiment of the urging plate 104. In the following, in order to identify the urging plate 104 for each embodiment, different characters, symbols, numbers, and the like are added to the code of the urging plate 104 for each embodiment.

Example 1
As shown in FIG. 10, the urging plate 104 </ b> A in the first embodiment includes a pressure receiving portion 111 and an urging portion 112. As shown in FIG. 11, which is an exploded view when the urging plate 104 </ b> A is cut into a plurality of parts, the urging unit 112 includes a first urging member 191, a second urging member 192, and a connecting member 193. , Can be classified. Here, the urging plate 104A is formed by integrally molding the pressure receiving portion 111 and the urging portion 112 from one plate material. However, FIG. 11 shows an exploded view when the urging plate 104A is cut into a plurality of parts for easy understanding of the configuration.

  The number of urging members in the urging portion 112 of the urging plate 104A is not limited to two, the first urging member 191 and the second urging member 192. As the number of urging members in the urging portion 112, one or more than two may be employed.

  The pressure receiving portion 111 has a plate shape having an opening 195. The opening 195 penetrates the pressure receiving part 111. The pressure receiving portion 111 has an annular shape except for a connecting portion 197 that is a portion to which the first urging member 191 is connected and a connecting portion 198 that is a portion to which the second urging member 192 is connected. ing. The first urging member 191, the second urging member 192, and the connecting member 193 are accommodated in the opening 195 when the pressure receiving portion 111 is viewed in plan. Note that one end 201 of the first biasing member 191 is connected to the connecting portion 197, and one end 202 of the second biasing member 192 is connected to the connecting portion 198. Further, the other end 203 of the first urging member 191 and the other end 204 of the second urging member 192 are connected to the connecting member 193.

  At least a part of the peripheral edge of the pressure receiving portion 111 is subjected to a bending process in which an edge is bent in a convex direction toward the biasing portion 112 side. By this bending process, an edge bent portion 207 is provided on at least a part of the periphery of the pressure receiving portion 111. The edge bending portion 207 increases the rigidity of the pressure receiving portion 111. In particular, it is preferable to increase the rigidity of the pressure receiving portion 111 by the edge bending portion 207 in the pressure receiving portion 111 in which the rigidity is likely to decrease due to the opening 195.

  In addition, the direction which becomes convex toward the opposite side to the urging | biasing part 112 side can also be employ | adopted for the direction of the edge bending part 207. Even in this direction, the rigidity of the pressure receiving portion 111 can be increased. However, the side opposite to the biasing portion 112 side of the pressure receiving portion 111 is the side in contact with the sheet member 107. For this reason, from the viewpoint of avoiding damage to the sheet member 107 by the edge bending portion 207, it is preferable that the edge bending portion 207 is oriented so as to protrude toward the biasing portion 112 side.

  The first urging member 191 has a first leg 211, a second leg 212, and a third leg 213. The second leg 212 has a leg 215A and a leg 215B. The leg portion 215A and the leg portion 215B are arranged along the Z axis that intersects the direction in which the first leg portion 211 extends when the biasing plate 104A is viewed in plan in the X axis direction. The third leg portion 213 includes a leg portion 217A and a leg portion 217B. The leg portion 217A and the leg portion 217B are arranged along the Z axis that intersects the direction in which the first leg portion 211 extends when the biasing plate 104A is viewed in plan in the X axis direction.

  The first leg portion 211 and the second leg portion 212 are connected to each other via a connecting portion 218. The second leg portion 212 and the third leg portion 213 are connected to each other via a connecting portion 219. Since the second leg portion 212 includes two leg portions 215A and a leg portion 215B, the connecting portion 219 includes a connecting portion 219A and a connecting portion 219B. And the leg part 215A and the leg part 217A are mutually connected via the connection part 219A. Similarly, the leg portion 215B and the leg portion 217B are connected to each other via the connecting portion 219B. The first leg 211, the second leg 212, and the third leg 213 are each inclined with respect to the pressure receiving part 111. The first leg portion 211, the second leg portion 212, and the third leg portion 213 are inclined from the pressure receiving portion 111 side toward the first wall 71 (FIG. 4) of the first case 62, respectively. .

  When the urging plate 104A is viewed in plan in the X-axis direction, the first leg portion 211 extends from the connecting portion 197 toward the center of the opening 195, that is, from the edge side of the opening 195 toward the center of the opening 195. Exist. When the urging plate 104A is viewed in plan in the X-axis direction, the second leg portion 212 extends from the center side of the opening 195 toward the edge side of the opening 195. For this reason, the second leg portion 212 is inclined in the direction opposite to the inclination direction of the first leg portion 211. Further, when the urging plate 104 </ b> A is viewed in a plan view in the X-axis direction, the third leg portion 213 extends from the edge side of the opening 195 toward the center side of the opening 195. For this reason, the third leg portion 213 is inclined in the same direction as the inclination direction of the first leg portion 211.

  Note that the number of leg portions in the first biasing member 191 is not limited to five, ie, the first leg portion 211, the leg portion 215A, the leg portion 215B, the leg portion 217A, and the leg portion 217B. As the number of legs in the first urging member 191, a number less than 5 or a number exceeding 5 may be employed. Furthermore, a configuration in which the first leg 211 includes two or more than two legs may be employed. A configuration in which each of the second leg 212 and the third leg 213 includes only one leg or a configuration including more than two legs may be employed.

  The second urging member 192 includes a first leg 231, a second leg 232, and a third leg 233. The second leg portion 232 has a leg portion 235A and a leg portion 235B. The leg portion 235A and the leg portion 235B are aligned along the Z axis that intersects the direction in which the first leg portion 231 extends when the biasing plate 104A is viewed in plan in the X axis direction. The third leg portion 233 includes a leg portion 237A and a leg portion 237B. The leg portion 237A and the leg portion 237B are arranged along the Z axis that intersects the direction in which the first leg portion 231 extends when the urging plate 104A is viewed in plan in the X axis direction.

  The first leg portion 231 and the second leg portion 232 are connected to each other via a connecting portion 238. The second leg portion 232 and the third leg portion 233 are connected to each other via a connecting portion 239. Since the second leg portion 232 includes the two leg portions 235A and the leg portion 235B, the connecting portion 239 includes the connecting portion 239A and the connecting portion 239B. And the leg part 235A and the leg part 237A are mutually connected via the connection part 239A. Similarly, the leg portion 235B and the leg portion 237B are connected to each other via the connecting portion 239B. The first leg portion 231, the second leg portion 232, and the third leg portion 233 are each inclined with respect to the pressure receiving portion 111. The first leg portion 231, the second leg portion 232, and the third leg portion 233 are each inclined so as to approach the first wall 71 (FIG. 4) of the first case 62 from the pressure receiving portion 111 side. .

  When the urging plate 104A is viewed in plan in the X-axis direction, the first leg portion 231 extends from the connecting portion 198 toward the center of the opening 195, that is, from the edge side of the opening 195 toward the center of the opening 195. Exist. When the urging plate 104 </ b> A is viewed in plan in the X-axis direction, the second leg portion 232 extends from the center side of the opening 195 toward the edge side of the opening 195. For this reason, the second leg portion 232 is inclined in a direction opposite to the inclination direction of the first leg portion 231. Further, when the urging plate 104 </ b> A is viewed in a plan view in the X-axis direction, the third leg portion 233 extends from the edge side of the opening 195 toward the center side of the opening 195. For this reason, the third leg portion 233 is inclined in the same direction as the inclination direction of the first leg portion 231.

  Note that the number of leg portions in the second urging member 192 is not limited to five of the first leg portion 231, the leg portion 235A, the leg portion 235B, the leg portion 237A, and the leg portion 237B. As the number of legs in the second urging member 192, a number of less than 5 or a number of more than 5 may be employed. Further, a configuration in which the first leg 231 includes two or more than two legs may be employed. A configuration in which each of the second leg portion 232 and the third leg portion 233 includes only one leg portion or a configuration in which more than two leg portions are included may be employed.

  In the present embodiment, in the first urging member 191, the connecting portion 218 is expressed as a portion different from the first leg portion 211 and the second leg portion 212. That is, the part from the first leg part 211 to the second leg part 212 is divided into three parts: the first leg part 211, the connecting part 218, and the second leg part 212. However, the method of dividing the portion from the first leg portion 211 to the second leg portion 212 is not limited to this, and a method of dividing the portion into the two portions of the first leg portion 211 and the second leg portion 212 is also adopted. Can be done. In this case, for example, the first leg 211 includes a part of the connecting part 218, and the second leg 212 includes the remaining part of the connecting part 218. In another example, an example in which the first leg 211 includes all of the connecting portions 218 may be employed. Furthermore, in another example, an example in which the second leg 212 includes all of the connecting portions 218 may be employed.

  In the present embodiment, the connecting portion 219 is expressed as a portion different from the second leg portion 212 and the third leg portion 213. That is, the portion from the second leg portion 212 to the third leg portion 213 is divided into three portions, that is, the second leg portion 212, the connecting portion 219, and the third leg portion 213. However, the method of dividing the portion from the second leg portion 212 to the third leg portion 213 is not limited to this, and a method of dividing the portion into the two portions of the second leg portion 212 and the third leg portion 213 is also adopted. Can be done. In this case, for example, the second leg 212 includes a part of the connecting part 219, and the third leg 213 includes the remaining part of the connecting part 219. In another example, an example in which the second leg portion 212 includes all of the connecting portions 219 may be employed. Furthermore, in another example, an example in which the third leg 213 includes all of the connecting portions 219 may be employed.

  In the present embodiment, in the second urging member 192, the connecting portion 238 is expressed as a portion different from the first leg portion 231 and the second leg portion 232. That is, the portion from the first leg portion 231 to the second leg portion 232 is divided into three portions: the first leg portion 231, the connecting portion 238, and the second leg portion 232. However, the method of dividing the portion from the first leg portion 231 to the second leg portion 232 is not limited to this, and a method of dividing the portion into the two portions of the first leg portion 231 and the second leg portion 232 is also adopted. Can be done. In this case, for example, the first leg portion 231 includes a part of the connecting portion 238, and the second leg portion 232 includes the remaining portion of the connecting portion 238. In another example, an example in which the first leg portion 231 includes all of the connecting portions 238 may be employed. Furthermore, in another example, an example in which the second leg portion 232 includes all of the connecting portions 238 may be employed.

  In the present embodiment, the connecting portion 239 is expressed as a portion different from the second leg portion 232 and the third leg portion 233. That is, the part from the second leg part 232 to the third leg part 233 is divided into three parts, that is, the second leg part 232, the connecting part 239, and the third leg part 233. However, the method of dividing the portion from the second leg portion 232 to the third leg portion 233 is not limited to this, and a method of dividing the portion into the two portions of the second leg portion 232 and the third leg portion 233 is also adopted. Can be done. In this case, for example, the second leg 232 includes a part of the connecting part 239 and the third leg 233 includes the remaining part of the connecting part 239. In another example, an example in which the second leg portion 232 includes all of the connecting portions 239 may be employed. Furthermore, in another example, an example in which the third leg portion 233 includes all of the connecting portions 239 may be employed.

  The connecting portion 197 and the connecting portion 198 are located on opposite sides of the central portion of the opening 195. Therefore, the first leg portion 211 extends from the connecting portion 197 toward the second urging member 192 side. Similarly, the first leg portion 231 extends from the connecting portion 198 toward the first biasing member 191 side. For this reason, the direction of inclination of the first leg 211 and the direction of inclination of the first leg 231 are opposite to each other. Similarly, the direction of inclination of the second leg 212 and the direction of inclination of the second leg 232 are opposite to each other. The direction of inclination of the third leg 213 and the direction of inclination of the third leg 233 are opposite to each other.

  The third leg 213 and the third leg 233 are connected to each other via a connecting member 193. That is, the first urging member 191 and the second urging member 192 are connected to each other via the connecting member 193. In the urging plate 104A, the first urging member 191 and the second urging member 192 have symmetrical shapes with respect to the connecting member 193. Further, in the urging plate 104A, the position of the center of gravity of the pressure receiving portion 111 overlaps the connecting member 193 when the urging plate 104A is viewed in plan in the X-axis direction. Therefore, in the urging plate 104A, the center of gravity of the pressure receiving portion 111 is located between the first urging member 191 and the second urging member 192 when the urging plate 104A is viewed in plan in the X-axis direction. ing.

  In terms of design, the spring constant of the first leg 211 and the spring constant of the first leg 231 are set to be equal to each other. Further, the spring constant of the connecting portion 218 and the spring constant of the connecting portion 238 are set to be equal to each other. Similarly, the spring constant of the second leg portion 212 and the spring constant of the second leg portion 232 are set to be equal to each other, the spring constant of the connecting portion 219 and the spring constant of the connecting portion 239 are set to be equal to each other, The spring constant of the tripod 213 and the spring constant of the third leg 233 are set to be equal to each other. With the above setting, the spring constant of the first urging member 191 and the spring constant of the second urging member 192 can be set to be equal to each other.

  The connecting member 193 has a plate-like appearance that extends along the YZ plane, and is provided with two attachment holes 241. In the following, when identifying the two attachment holes 241, the two attachment holes 241 are referred to as an attachment hole 241A and an attachment hole 241B, respectively. The two attachment holes 241 are utilized for connection between the urging plate 104A and the first case 62. As shown in FIG. 12, the first wall 71 of the first case 62 is provided with two convex portions 243 corresponding to the two mounting holes 241. The two convex portions 243 protrude from the first wall 71 in the −X axis direction, that is, from the first wall 71 toward the second case 63 (FIG. 4). In the following description, when the two convex portions 243 are identified, the two convex portions 243 are represented as a convex portion 243A and a convex portion 243B, respectively.

  The convex portion 243A corresponds to the mounting hole 241A, and the convex portion 243B corresponds to the mounting hole 241B. The convex portion 243A and the attachment hole 241A are configured to be fitted to each other. Similarly, the convex portion 243B and the attachment hole 241B are configured to be fitted to each other. The protruding amounts of the two convex portions 243 from the first wall 71 are larger than the thickness of the connecting member 193, respectively. For this reason, when the convex portion 243 is inserted into the attachment hole 241, the convex portion 243 penetrates the connecting member 193 and protrudes from the connecting member 193 to the pressure receiving portion 111 side. Then, with the convex portion 243A being inserted into the mounting hole 241A and the convex portion 243B being inserted into the mounting hole 241B, the connecting member 193 is formed in the first case by performing crimping on each of the convex portion 243A and the convex portion 243B. 62.

  A method for manufacturing the urging plate 104A will be described. The manufacturing method of the urging plate 104A includes an outer shape forming step, an edge bending step, a leg bending step, a heat treatment step, and a reinforcing portion forming step. In the outer shape forming step, as shown in FIG. 13, an outer shape 245 that is a prototype of the urging plate 104A is formed. In this outer shape forming step, the outer shape 245 is formed by stamping the plate material 247. In the outer shape 245, the pressure receiving portion 111, the first leg portion 211, the second leg portion 212, the third leg portion 213, and the connecting member 193 are located on substantially the same plane. Further, the pressure receiving portion 111, the first leg portion 231, the second leg portion 232, the third leg portion 233, and the connecting member 193 are also located on substantially the same plane.

  In the outer shape 245, as shown in FIG. 14, the first leg portion 211, the second leg portion 212, the third leg portion 213, the connecting portion 218, the connecting portion 219, and the connecting member 193 are located inside the opening 195. Fit. Similarly, in the outer shape 245, the first leg portion 231, the second leg portion 232, the third leg portion 233, the connecting portion 238, and the connecting portion 239 are also accommodated inside the opening 195. For this reason, in the urging plate 104 </ b> A shown in FIG. 10, when the urging portion 112 is contracted, the urging portion 112 is accommodated inside the opening 195.

  The first leg 211, the second leg 212, the third leg 213, the connecting part 218, the connecting part 219, the first leg 231, the second leg 232, the third leg 233, the connecting part 238, The connecting portion 239 and the connecting member 193 are provided at positions that do not overlap each other. Therefore, in the biasing plate 104A shown in FIG. 12, even if the biasing portion 112 is contracted, the first leg 211, the second leg 212, the third leg 213, the connecting portion 218, the connecting portion 219, The one leg portion 231, the second leg portion 232, the third leg portion 233, the connecting portion 238, the connecting portion 239, and the connecting member 193 do not overlap each other.

  In the edge bending step, the edge bending portion 207 (FIG. 11) is formed by bending a part of the outer edge of the outer shape 245.

  In the leg bending step, the inclination of the first leg 211 and the first leg 231 with respect to the pressure receiving part 111, the inclination of the second leg 212 and the second leg 232 with respect to the pressure receiving part 111, and the third leg 213. And the inclination with respect to the pressure receiving part 111 of the 3rd leg part 233 is formed. These inclinations can be formed by bending the outer shape 245 by pressing or the like.

  At this time, the first leg 211 is bent at the bending portion 251 as shown in FIG. The bent part 251 is a part where the first leg 211 is bent with respect to the pressure receiving part 111. Further, the first leg portion 211 is bent with respect to the connecting portion 218 at the bending portion 252. The leg portion 215A is bent with respect to the connecting portion 218 at the bending portion 253A. The leg portion 215B is bent with respect to the connecting portion 218 at the bending portion 253B. Further, the leg portion 215A is bent with respect to the connecting portion 219A at the bending portion 254A. The leg portion 215B is bent with respect to the connecting portion 219B at the bending portion 254B.

  The leg portion 217A is bent with respect to the connecting portion 219A at a bent portion 255A. The leg portion 217B is bent with respect to the connecting portion 219B at a bending portion 255B. Further, the leg portion 217A is bent with respect to the connecting member 193 at a bending portion 256A. The leg portion 217B is bent with respect to the connecting member 193 at the bending portion 256B.

  Similarly, the first leg portion 231 is bent at the bending portion 261. The bending portion 261 is a portion where the first leg portion 231 is bent with respect to the pressure receiving portion 111. Further, the first leg portion 231 is bent with respect to the connecting portion 238 at the bending portion 262. The leg portion 235A is bent with respect to the connecting portion 238 at the bending portion 263A. The leg portion 235B is bent with respect to the connecting portion 238 at the bending portion 263B. Further, the leg portion 235A is bent with respect to the connecting portion 239A at the bending portion 264A. The leg portion 235B is bent with respect to the connecting portion 239B at the bending portion 264B.

  The leg portion 237A is bent with respect to the connecting portion 239A at a bending portion 265A. The leg portion 237B is bent with respect to the connecting portion 239B at the bending portion 265B. Further, the leg portion 237A is bent with respect to the connecting member 193 at the bending portion 266A. The leg portion 237B is bent with respect to the connecting member 193 at the bending portion 266B. The urging portion 112 of the urging plate 104A is formed by the above-described leg bending process.

  In the heat treatment step, the urging plate 104A is heated and then cooled after the edge bending step and the leg bending step. The performance of the biasing portion 112 as a spring can be enhanced by the heat treatment step. Further, the stress remaining on the urging plate 104A can be removed by the heat treatment process. Depending on the degree of durability required for the cartridge 7, the heat treatment step can be omitted. Further, either the edge bending step or the leg bending step may be performed first or after.

  In the reinforcing portion forming step, as shown in FIG. 16, the reinforcing portion 281 is formed on the first leg portion 211, and the reinforcing portion 282 is formed on the first leg portion 231. The reinforcing portion 281 reinforces the first leg portion 211. The spring force of the first leg portion 211 is reinforced by the reinforcing portion 281. The reinforcing part 282 reinforces the first leg part 231. The spring force of the first leg portion 231 is strengthened by the reinforcing portion 282.

  As shown in FIG. 17, the reinforcing portion 281 extends along the Y axis and extends from the first leg portion 211 to the pressure receiving portion 111 across the connecting portion 197. Further, the reinforcing portion 281 extends from the position in the −Y-axis direction to the pressure receiving portion 111 across the connecting portion 197 from the bent portion 251. That is, the reinforcing portion 281 extends from the first leg portion 211 to the pressure receiving portion 111 beyond the bending portion 251 in the Y-axis direction.

  The reinforcing portion 282 extends along the Y axis, and extends from the first leg portion 231 to the pressure receiving portion 111 across the connecting portion 198. Further, the reinforcing portion 282 extends from the position in the Y-axis direction to the pressure receiving portion 111 across the connecting portion 198 from the bending portion 261. That is, the reinforcing portion 282 extends from the first leg portion 231 to the pressure receiving portion 111 beyond the bending portion 261 in the −Y axis direction.

  The reinforcing portion 281 and the reinforcing portion 282 are formed by locally plastically deforming the plate material 247 constituting the urging plate 104A. In this embodiment, as shown in FIG. 18 which is a cross-sectional view taken along the line AA in FIG. 16, the plate member 247 constituting the urging plate 104A is deformed in a convex direction in the −X axis direction. A portion 281 is formed. Similarly, the reinforcing portion 282 is also formed by deforming the plate material 247 so as to be convex in the −X axis direction. The -X-axis direction is opposite to the direction approaching the first case 62 (FIG. 12). The direction that is convex in the −X-axis direction is the same as the direction of mountain folding when the first leg portion 211 and the first leg portion 231 are bent with respect to the pressure receiving portion 111. That is, the first leg portion 211 and the first leg portion 231 are mountain-folded with respect to the pressure receiving portion 111. For this reason, the reinforcing part 281 and the reinforcing part 282 are formed by deforming the plate material 247 so as to be convex in the direction of the first leg part 211 and the first leg part 231 with respect to the pressure receiving part 111.

  Note that the direction of deformation of the plate member 247 constituting the reinforcing portion 281 and the reinforcing portion 282 is not limited to the above. As the reinforcement part 281 and the reinforcement part 282, the structure which deform | transformed the board | plate material 247 in the direction which becomes convex in the direction approaching the 1st case 62 (FIG. 12) side, for example can be employ | adopted. In this case, the reinforcing portion 281 and the reinforcing portion 282 are formed by deforming the plate material 247 in a direction that is convex in the direction opposite to the direction of the mountain folding of the first leg portion 211 or the first leg portion 231 with respect to the pressure receiving portion 111. Is done. That is, the reinforcing portion 281 and the reinforcing portion 282 are formed by deforming the plate material 247 in a direction that protrudes in the direction of the valley of the first leg portion 211 and the first leg portion 231 with respect to the pressure receiving portion 111. The direction of the valley fold when the first leg 211 and the first leg 231 are bent with respect to the pressure receiving part 111 is the same as the X-axis direction.

  Here, the first leg part 211 and the first leg part 231 bent with respect to the pressure receiving part 111 are deformed in a direction to reduce the inclination of the first leg part 211 and the first leg part 231 with respect to the pressure receiving part 111. At this time, a compressive force acts on a portion in the −X-axis direction in the cross section of the bent portion 251 or the bent portion 261 (FIG. 15). In the following, the first leg 211 and the first leg 231 bent with respect to the pressure receiving part 111 are deformed in a direction in which the inclination of the first leg 211 and the first leg 231 with respect to the pressure receiving part 111 is reduced. It is expressed that the first leg portion 211 and the first leg portion 231 are bent. That is, when the first leg portion 211 and the first leg portion 231 are bent, a compressive force acts on the bent portions 251 and the bent portions of the bent portions 261. At this time, if the direction of deformation of the reinforcing part 281 and the reinforcing part 282 is convex in the direction of mountain folding, the direction of deformation of the reinforcing part 281 and reinforcing part 282 is convex in the direction of valley folding, The strength of the reinforcing part 281 and the reinforcing part 282 is increased.

  The deformation direction of the reinforcing part 281 and the reinforcing part 282 being convex in the direction of the valley fold is the reverse of the deformation direction of the reinforcing part 281 and the reinforcing part 282 being concave in the direction of the mountain fold. For this reason, when the direction of deformation of the reinforcing part 281 or the reinforcing part 282 is convex in the direction of valley folding, a compressive force acts on the concave side of the deformation of the reinforcing part 281 or the reinforcing part 282. When a compressive force acts on the concave side of deformation of the reinforcing portion 281 or the reinforcing portion 282, the concave portion of deformation of the reinforcing portion 281 or the reinforcing portion 282 is likely to open. For this reason, when the direction of deformation of the reinforcing part 281 and the reinforcing part 282 is convex in the direction of valley folding, compared to the case where the direction of deformation of the reinforcing part 281 and reinforcing part 282 is convex in the direction of mountain folding, The strength of the reinforcing part 281 and the reinforcing part 282 tends to be low. Therefore, from the viewpoint of increasing the strength of the reinforcing part 281 and the reinforcing part 282, it is preferable that the direction of deformation of the reinforcing part 281 and the reinforcing part 282 is convex in the direction of the mountain fold.

  Thus, the urging plate 104A can be manufactured. Note that either the heat treatment step or the reinforcing portion forming step may be performed before or after.

  According to the urging plate 104A of the first embodiment, the reinforcing portion 281 formed across the pressure receiving portion 111 and the first leg portion 211, and the reinforcement formed across the pressure receiving portion 111 and the first leg portion 231. The spring force of the first leg 211 and the first leg 231 is increased by the portion 282. Thereby, the spring force can be increased without changing the materials of the first urging member 191 and the second urging member 192. Therefore, in the cartridge 7 having the urging plate 104A, the pressure in the cartridge 7 can be easily adjusted.

  Further, in the urging plate 104A, the reinforcing part 281 and the reinforcing part 282 can be formed by deforming a part of the first leg part 211, a part of the first leg part 231 and a part of the pressure receiving part 111. Since it can do, the spring force of the 1st leg part 211 and the 1st leg part 231 can be strengthened easily.

  In the first embodiment, a configuration in which the reinforcing portion 281 illustrated in FIG. 17 is positioned in the −Y-axis direction with respect to the bent portion 251, that is, a configuration in which the reinforcing portion 281 does not exceed the bent portion 251 in the Y-axis direction may be employed. Even in this configuration, the spring force of the first leg portion 211 can be increased. The length of the reinforcing portion 281 along the Y axis can be appropriately set according to the spring force of the first leg portion 211. For this reason, depending on the desired spring force, either a configuration in which the reinforcing portion 281 exceeds the bent portion 251 in the Y-axis direction or a configuration in which the reinforcing portion 281 does not exceed the bent portion 251 in the Y-axis direction can be adopted.

  Similarly, in the first embodiment, a configuration in which the reinforcing portion 282 is positioned in the Y-axis direction with respect to the bent portion 261, that is, a configuration in which the reinforcing portion 282 does not exceed the bent portion 261 in the −Y-axis direction may be employed. Even in this configuration, the spring force of the first leg 231 can be increased. The length of the reinforcing portion 282 along the Y axis can be appropriately set according to the spring force of the first leg portion 231. For this reason, depending on the desired spring force, either a configuration in which the reinforcing portion 282 exceeds the bent portion 261 in the −Y-axis direction or a configuration in which the reinforcing portion 282 does not exceed the bent portion 261 in the −Y-axis direction can be employed.

(Example 2)
As shown in FIG. 19, the urging plate 104 </ b> B according to the second embodiment includes a reinforcing portion 283 and a reinforcing portion 284. The urging plate 104B is the same as the urging plate 104A except that the reinforcing portion 281 and the reinforcing portion 282 are omitted from the urging plate 104A of the first embodiment, and the reinforcing portion 283 and the reinforcing portion 284 are added. It has the composition of. For this reason, in the following, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.

  The reinforcing portion 283 extends along the Y axis, and extends from the first leg 211 to the connecting portion 218 across the bending portion 252. Similarly, the reinforcing portion 284 extends along the Y axis and extends from the first leg portion 231 to the connecting portion 238 across the bending portion 262. The reinforcing part 283 and the reinforcing part 284 have the same form as the reinforcing part 281 and the reinforcing part 282 of the first embodiment. That is, the reinforcing portion 283 and the reinforcing portion 284 are formed by locally plastically deforming the plate material 247 constituting the urging plate 104B.

  Also in the second embodiment, similarly to the first embodiment, the reinforcing portion 283 and the reinforcing portion 284 are arranged so that the plate material 247 is in the direction of the mountain break of the first leg portion 211 and the first leg portion 231 with respect to the connecting portion 218 and the connecting portion 238. It is formed by deforming in a convex direction. That is, the reinforcing portion 283 and the reinforcing portion 284 are formed by deforming the plate member 247 in a direction that protrudes in the X-axis direction, that is, in a direction that protrudes in the direction approaching the first case 62 (FIG. 12). Yes. For this reason, the direction of deformation of the reinforcing part 283 and the reinforcing part 284 is opposite to the direction of deformation of the reinforcing part 281 and the reinforcing part 282 of the first embodiment.

  According to the urging plate 104B of the second embodiment, the reinforcing portion 283 formed across the connecting portion 218 and the first leg portion 211 as an example of the connecting portion, and the connecting portion 238 and the example of the connecting portion as the first portion. The spring force of the first leg part 211 and the first leg part 231 is strengthened by the reinforcing part 284 formed across the one leg part 231. Thereby, the spring force can be increased without changing the materials of the first urging member 191 and the second urging member 192. Therefore, in the cartridge 7 having the urging plate 104B, the pressure in the cartridge 7 can be easily adjusted.

  Further, in the urging plate 104B, a part of the first leg part 211 and a part of the first leg part 231 and a part of the connecting part 218 and a part of the connecting part 238 are deformed to deform the reinforcing part 283 and the reinforcing part. Since the portion 284 can be formed, the spring force of the first leg portion 211 and the first leg portion 231 can be easily increased.

  In the second embodiment, a configuration in which the reinforcing portion 283 illustrated in FIG. 19 is positioned in the Y-axis direction with respect to the bent portion 252, that is, a configuration in which the reinforcing portion 283 does not exceed the bent portion 252 in the −Y-axis direction may be employed. Even in this configuration, the spring force of the first leg portion 211 can be increased. The length of the reinforcing portion 283 along the Y axis can be appropriately set according to the spring force of the first leg portion 211. For this reason, depending on the desired spring force, either a configuration in which the reinforcing portion 283 exceeds the bent portion 252 in the −Y-axis direction or a configuration in which the reinforcing portion 283 does not exceed the bent portion 252 in the −Y-axis direction can be employed.

  Similarly, in the second embodiment, a configuration in which the reinforcing portion 284 is positioned in the −Y-axis direction with respect to the bent portion 262, that is, a configuration in which the reinforcing portion 284 does not exceed the bent portion 262 in the Y-axis direction may be employed. Even in this configuration, the spring force of the first leg 231 can be increased. The length of the reinforcing portion 284 along the Y axis can be appropriately set according to the spring force of the first leg portion 231. For this reason, depending on the desired spring force, either a configuration in which the reinforcing portion 284 exceeds the bent portion 262 in the Y-axis direction or a configuration in which the reinforcing portion 284 does not exceed the bent portion 262 in the Y-axis direction can be employed.

(Example 3)
As illustrated in FIG. 20, the urging plate 104 </ b> C according to the third embodiment includes a reinforcing portion 281, a reinforcing portion 282, a reinforcing portion 283, and a reinforcing portion 284. The urging plate 104C has the same configuration as the urging plate 104A, except that the reinforcing portion 283 and the reinforcing portion 284 in the second embodiment are added to the urging plate 104A in the first embodiment. . For this reason, in the following, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.

  According to the urging plate 104C of the third embodiment, the spring force of the first leg portion 211 and the first leg portion 231 can be further increased compared to the first and second embodiments. Thereby, the spring force can be increased without changing the materials of the first urging member 191 and the second urging member 192. Therefore, in the cartridge 7 having the urging plate 104C, the pressure in the cartridge 7 can be easily adjusted. In Example 3, each of the reinforcing portion 281 and the reinforcing portion 282 corresponds to the first reinforcing portion, and each of the reinforcing portion 283 and the reinforcing portion 284 corresponds to the second reinforcing portion.

  In the first embodiment, the second embodiment, and the third embodiment, the portion where the reinforcing portion 281 and the reinforcing portion 283 are formed is not limited to the first leg portion 211. The second leg part 212, the third leg part 213, and the like can also be adopted as places where the reinforcing part 281 and the reinforcing part 283 are formed. Also in this case, the spring force can be increased without changing the material of the first urging member 191 and the second urging member 192 as in the first and second embodiments. Moreover, in Example 1, Example 2, and Example 3, the location which forms the reinforcement part 282 and the reinforcement part 284 is not limited to the 1st leg part 231. FIG. The second leg part 232, the third leg part 233, and the like may be employed as the part where the reinforcing part 282 and the reinforcing part 284 are formed. Even in this case, the spring force can be increased without changing the material of the first urging member 191 and the second urging member 192 as in the first embodiment, the second embodiment, and the third embodiment.

  In the third embodiment, a configuration in which a new reinforcing portion is added to the second leg portion 212 or the third leg portion 213 may be employed. Furthermore, the structure which adds a new reinforcement part to the 2nd leg part 232 or the 3rd leg part 233 may be employ | adopted. Even in this case, the spring force can be increased without changing the material of the first urging member 191 and the second urging member 192 as in the first embodiment, the second embodiment, and the third embodiment. Furthermore, in this case, the spring force of the first urging member 191 and the second urging member 192 can be further increased compared to the third embodiment.

Example 4
As shown in FIG. 21, the urging plate 104D according to the fourth embodiment includes a reinforcing portion 281, a reinforcing portion 282, a reinforcing portion 283, a reinforcing portion 284, a reinforcing portion 285, a reinforcing portion 286, and a reinforcing portion 287. And a reinforcing part 288, a reinforcing part 289, a reinforcing part 290, a reinforcing part 291 and a reinforcing part 292. The urging plate 104D has the same configuration as the urging plate 104C except that new reinforcing portions 285 to 292 are added to the urging plate 104C of the third embodiment. For this reason, below, about the structure similar to Example 3, the same code | symbol as Example 3 is attached | subjected and detailed description is abbreviate | omitted.

  The reinforcing portions 285 to 292 each extend along the Y axis. As shown in FIG. 22, which is an enlarged view of part B in FIG. 21, the reinforcing part 285 </ b> A of the reinforcing part 285 is connected to the connecting part 218 across the bent portion 253 </ b> A from the leg part 215 </ b> A of the second leg part 212. It reaches to. The reinforcing portion 285B of the reinforcing portion 285 extends from the leg portion 215B of the second leg portion 212 to the connecting portion 218 across the bending portion 253B.

  The reinforcing portion 287A of the reinforcing portion 287 extends from the leg portion 215A of the second leg portion 212 to the connecting portion 219A across the bending portion 254A. The reinforcing portion 287B of the reinforcing portion 287 extends from the leg portion 215B of the second leg portion 212 to the connecting portion 219B across the bending portion 254B.

  The reinforcing portion 289A of the reinforcing portion 289 extends from the leg portion 217A of the third leg portion 213 to the connecting portion 219A across the bending portion 255A. The reinforcing portion 289B of the reinforcing portion 289 extends from the leg portion 217B of the third leg portion 213 to the connecting portion 219B across the bending portion 255B.

  The reinforcing portion 291A of the reinforcing portion 291 extends from the leg portion 217A of the third leg portion 213 to the connecting member 193 across the bending portion 256A. The reinforcing portion 291B of the reinforcing portion 291 extends from the leg portion 217B of the third leg portion 213 to the connecting member 193 across the bending portion 256B.

  Further, as shown in FIG. 23, which is an enlarged view of a portion C in FIG. 21, the reinforcing portion 286A of the reinforcing portion 286 is connected to the leg portion 235A of the second leg portion 232 across the bending portion 263A. Part 238. The reinforcing portion 286B of the reinforcing portion 286 extends from the leg portion 235B of the second leg portion 232 to the connecting portion 238 across the bending portion 263B.

  The reinforcing portion 288A of the reinforcing portion 288 extends from the leg portion 235A of the second leg portion 232 to the connecting portion 239A across the bending portion 264A. The reinforcing portion 288B of the reinforcing portion 288 extends from the leg portion 235B of the second leg portion 232 to the connecting portion 239B across the bending portion 264B.

  The reinforcing portion 290A of the reinforcing portion 290 extends from the leg portion 237A of the third leg portion 233 to the connecting portion 239A across the bending portion 265A. The reinforcing part 290B of the reinforcing part 290 extends from the leg part 237B of the third leg part 233 to the connecting part 239B across the bending portion 265B.

  The reinforcing portion 292A of the reinforcing portion 292 extends from the leg portion 237A of the third leg portion 233 to the connecting member 193 across the bending portion 266A. The reinforcing portion 292B of the reinforcing portion 292 extends from the leg portion 237B of the third leg portion 233 to the connecting member 193 across the bending portion 266B.

  The reinforcing part 285 to the reinforcing part 292 have the same form as the reinforcing part 281 and the reinforcing part 282 of Example 1, respectively. That is, the reinforcing portions 285 to 292 are each formed by locally plastically deforming the plate material 247 that constitutes the urging plate 104D.

  Also in the fourth embodiment, the direction of deformation of the plate member 247 in each of the reinforcing portion 285 to the reinforcing portion 292 is the same as in the first to third embodiments. The reinforcing part 285 and the reinforcing part 286 are formed by deforming the second leg part 212 and the second leg part 232 so as to protrude in the direction of mountain folding with respect to the connecting part 218 and the connecting part 238, respectively. That is, the reinforcing portion 285 and the reinforcing portion 286 deform the plate member 247 in a direction that protrudes in the −X axis direction, that is, in a direction that protrudes in the direction opposite to the direction approaching the first case 62 (FIG. 12). It is formed by. For this reason, the direction of deformation of the reinforcing portion 285 and the reinforcing portion 286 is the same as the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282 of the first embodiment.

  Similarly, the reinforcing part 287 and the reinforcing part 288 are formed by deforming the second leg part 212 and the second leg part 232 so as to protrude in the direction of the mountain folds with respect to the connecting part 219 and the connecting part 239, respectively. Yes. That is, the reinforcing portion 287 and the reinforcing portion 288 are formed by deforming the plate material 247 in a direction that is convex in the X-axis direction, that is, in a direction that is convex in the direction approaching the first case 62 (FIG. 12). Yes. For this reason, the direction of deformation of the reinforcing portion 287 and the reinforcing portion 288 is opposite to the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282 of the first embodiment.

  Similarly, the reinforcing part 289 and the reinforcing part 290 are formed by deforming the third leg part 213 and the third leg part 233 so as to protrude in the direction of the mountain fold with respect to the connecting part 219 and the connecting part 239, respectively. Yes. That is, the reinforcing portion 289 and the reinforcing portion 290 deform the plate member 247 in a direction that is convex in the −X axis direction, that is, in a direction that is convex in the direction opposite to the direction approaching the first case 62 (FIG. 12). It is formed by. For this reason, the direction of deformation of the reinforcing part 289 and the reinforcing part 290 is the same as the direction of deformation of the reinforcing part 281 and the reinforcing part 282 of the first embodiment.

  Similarly, the reinforcing portion 291 and the reinforcing portion 292 are each formed by deforming the third leg portion 213 and the third leg portion 233 with respect to the connecting member 193 so as to protrude in the direction of the mountain fold. That is, the reinforcing portion 291 and the reinforcing portion 292 are formed by deforming the plate member 247 in a direction that is convex in the X-axis direction, that is, in a direction that is convex in the direction approaching the first case 62 (FIG. 12). Yes. For this reason, the direction of deformation of the reinforcing portion 291 and the reinforcing portion 292 is opposite to the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282 of the first embodiment.

  According to the urging plate 104D of the fourth embodiment, the spring force of the first urging member 191 and the second urging member 192 can be further increased compared to the first to third embodiments. Thereby, the spring force can be increased without changing the materials of the first urging member 191 and the second urging member 192. Therefore, in the cartridge 7 having the urging plate 104D, the pressure in the cartridge 7 can be easily adjusted.

  In the third and fourth embodiments, the direction of deformation of the plate member 247 in the reinforcing portion 281 and the reinforcing portion 282 is a direction that protrudes toward the first case 62 (FIG. 12), and the reinforcing portion 283 and the reinforcing portion A configuration in which the direction of deformation of the plate member 247 in the portion 284 is a direction that protrudes in a direction opposite to the direction approaching the first case 62 side may be employed. Even in this configuration, the direction of deformation of the reinforcing portion 283 and the reinforcing portion 284 is opposite to the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282.

  Furthermore, in Example 3 and Example 4, the direction of deformation of the plate member 247 in the reinforcing part 281 and the reinforcing part 282 is set to be a direction that protrudes toward the first case 62 (FIG. 12), and the reinforcing part 283 and the reinforcing part A configuration in which the direction of deformation of the plate member 247 in the portion 284 is a direction that protrudes toward the first case 62 side may be employed. In this configuration, the direction of deformation of the reinforcing portion 283 and the reinforcing portion 284 and the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282 can be aligned.

  Further, in the third and fourth embodiments, the direction of deformation of the plate member 247 in the reinforcing portion 281 and the reinforcing portion 282 is set to a direction that protrudes in the direction opposite to the direction approaching the first case 62 (FIG. 12), A configuration in which the direction of deformation of the plate member 247 in the portion 283 and the reinforcing portion 284 is a direction that protrudes in a direction opposite to the direction approaching the first case 62 side may be employed. Even in this configuration, the direction of deformation of the reinforcing portion 283 and the reinforcing portion 284 and the direction of deformation of the reinforcing portion 281 and the reinforcing portion 282 can be aligned.

  Furthermore, in Example 4, the structure which makes the direction of deformation | transformation of the board | plate material 247 in the reinforcement part 281-the reinforcement part 292 become the direction which becomes convex in the direction approaching the 1st case 62 (FIG. 12) side may be employ | adopted. In this configuration, the direction of deformation of the plate material 247 can be aligned in the reinforcing portion 281 to the reinforcing portion 292.

  Furthermore, in the fourth embodiment, a configuration in which the direction of deformation of the plate member 247 in the reinforcing portion 281 to the reinforcing portion 292 is a direction that protrudes in a direction opposite to the direction approaching the first case 62 (FIG. 12) side may be employed. . In this configuration, the direction of deformation of the plate material 247 can be aligned in the reinforcing portion 281 to the reinforcing portion 292.

  Further, in Example 4, the configuration in which the reinforcing portion 285 shown in FIG. 22 is positioned in the Y-axis direction from the bent portion 253A and the bent portion 253B, that is, the reinforcing portion 285 has the bent portion 253A and the bent portion 253B in the −Y-axis direction. Configurations that do not exceed may also be employed. Even in this configuration, the spring force of the second leg 212 can be increased. The length of the reinforcing portion 285 along the Y axis can be appropriately set according to the spring force of the second leg portion 212. Therefore, depending on the desired spring force, the reinforcing portion 285 does not exceed the bent portion 253A or the bent portion 253B in the −Y axis direction, or the reinforcing portion 285 does not exceed the bent portion 253A or the bent portion 253B in the −Y axis direction. Any of the configurations can be employed.

  Further, in the fourth embodiment, a configuration in which the reinforcing portion 287 is positioned in the −Y axis direction from the bent portion 254A and the bent portion 254B, that is, a configuration in which the reinforcing portion 287 does not exceed the bent portion 254A and the bent portion 254B in the Y axis direction is also possible. Can be employed. Even in this configuration, the spring force of the second leg 212 can be increased. The length of the reinforcing portion 287 along the Y axis can be appropriately set according to the spring force of the second leg portion 212. For this reason, the configuration in which the reinforcing portion 287 exceeds the bent portion 254A and the bent portion 254B in the Y-axis direction by the desired spring force, or the configuration in which the reinforcing portion 287 does not exceed the bent portion 254A and the bent portion 254B in the Y-axis direction. Either can be adopted.

  In the fourth embodiment, the configuration in which the reinforcing portion 289 is positioned in the −Y-axis direction from the bent portion 255A and the bent portion 255B, that is, the configuration in which the reinforcing portion 289 does not exceed the bent portion 255A and the bent portion 255B in the Y-axis direction. Can be employed. Even in this configuration, the spring force of the third leg 213 can be increased. The length of the reinforcing portion 289 along the Y axis can be appropriately set according to the spring force of the third leg portion 213. For this reason, the configuration in which the reinforcing portion 289 exceeds the bent portion 255A or the bent portion 255B in the Y-axis direction by the desired spring force, or the reinforcing portion 289 does not exceed the bent portion 255A or the bent portion 255B in the Y-axis direction. Either can be adopted.

  In the fourth embodiment, the configuration in which the reinforcing portion 291 is positioned in the Y-axis direction relative to the bent portion 256A and the bent portion 256B, that is, the configuration in which the reinforcing portion 291 does not exceed the bent portion 256A and the bent portion 256B in the −Y-axis direction. Can be employed. Even in this configuration, the spring force of the third leg 213 can be increased. The length of the reinforcing portion 291 along the Y axis can be appropriately set according to the spring force of the third leg portion 213. For this reason, depending on the desired spring force, the reinforcing portion 291 does not exceed the bent portion 256A or the bent portion 256B in the -Y-axis direction, or the reinforcing portion 291 does not exceed the bent portion 256A or the bent portion 256B in the -Y-axis direction. Any of the configurations can be employed.

  Further, in Example 4, the configuration in which the reinforcing portion 286 shown in FIG. 23 is positioned in the −Y-axis direction with respect to the bent portion 263A and the bent portion 263B, that is, the reinforcing portion 286 has the bent portion 263A and the bent portion 263B in the Y-axis direction. Configurations that do not exceed may also be employed. Even in this configuration, the spring force of the second leg 232 can be increased. The length of the reinforcing portion 286 along the Y axis can be appropriately set according to the spring force of the second leg portion 232. For this reason, the configuration in which the reinforcing portion 286 exceeds the bending portion 263A and the bending portion 263B in the Y-axis direction by the desired spring force, or the configuration in which the reinforcing portion 286 does not exceed the bending portion 263A and the bending portion 263B in the Y-axis direction. Either can be adopted.

  In the fourth embodiment, a configuration in which the reinforcing portion 288 is positioned in the Y-axis direction with respect to the bent portion 264A and the bent portion 264B, that is, a configuration in which the reinforcing portion 288 does not exceed the bent portion 264A and the bent portion 264B in the −Y-axis direction. Can be employed. Even in this configuration, the spring force of the second leg 232 can be increased. The length of the reinforcing portion 288 along the Y axis can be appropriately set according to the spring force of the second leg portion 232. Therefore, depending on the desired spring force, the reinforcing portion 288 does not exceed the bent portion 264A or the bent portion 264B in the -Y axis direction, or the reinforcing portion 288 does not exceed the bent portion 264A or the bent portion 264B in the -Y axis direction. Any of the configurations can be employed.

  In the fourth embodiment, the configuration in which the reinforcing portion 290 is positioned in the Y-axis direction relative to the bent portion 265A and the bent portion 265B, that is, the configuration in which the reinforcing portion 290 does not exceed the bent portion 265A and the bent portion 265B in the −Y-axis direction. Can be employed. Even in this configuration, the spring force of the third leg portion 233 can be increased. The length of the reinforcing portion 290 along the Y axis can be appropriately set according to the spring force of the third leg portion 233. Therefore, depending on the desired spring force, the reinforcing portion 290 does not exceed the bent portion 265A or the bent portion 265B in the −Y axis direction, or the reinforcing portion 290 does not exceed the bent portion 265A or the bent portion 265B in the −Y axis direction. Any of the configurations can be employed.

  In the fourth embodiment, a configuration in which the reinforcing portion 292 is positioned in the −Y-axis direction with respect to the bent portion 266A and the bent portion 266B, that is, a configuration in which the reinforcing portion 292 does not exceed the bent portion 266A and the bent portion 266B in the Y-axis direction. Can be employed. Even in this configuration, the spring force of the third leg portion 233 can be increased. The length of the reinforcing portion 292 along the Y axis can be appropriately set according to the spring force of the third leg portion 233. For this reason, the configuration in which the reinforcing portion 292 exceeds the bending portion 266A or the bending portion 266B in the Y-axis direction by the desired spring force, or the configuration in which the reinforcing portion 292 does not exceed the bending portion 266A or the bending portion 266B in the Y-axis direction. Either can be adopted.

(Example 5)
As shown in FIG. 24, the urging plate 104 </ b> E according to the fifth embodiment includes a reinforcing part 293, a reinforcing part 294, a reinforcing part 295, and a reinforcing part 296. The urging plate 104E has the same configuration as the urging plate 104D except that new reinforcing portions 293 to 296 are added to the urging plate 104D of the fourth embodiment. For this reason, below, about the structure similar to Example 4, the code | symbol same as Example 4 is attached | subjected and detailed description is abbreviate | omitted.

  The reinforcing portions 293 to 296 extend along the X axis, respectively. As shown in FIG. 25, which is an enlarged view of the D portion in FIG. 24, the reinforcing portion 293 is formed in the connecting portion 218. The reinforcing portion 293 is located in the −Y-axis direction with respect to the bent portion 252, the bent portion 253A, and the bent portion 253B. The reinforcing portion 293 is connected to the reinforcing portion 283, the reinforcing portion 285A, and the reinforcing portion 285B. In other words, the reinforcing portion 293 reaches the reinforcing portion 285B across the reinforcing portion 283 from the reinforcing portion 285A. In this embodiment, the reinforcing portion 293 is connected to the reinforcing portion 283, the reinforcing portion 285A, and the reinforcing portion 285B.

  A configuration in which the reinforcing portion 293, the reinforcing portion 283, the reinforcing portion 285A, and the reinforcing portion 285B are separated from each other may be employed. However, according to the configuration in which the reinforcing portion 293 is connected to the reinforcing portion 283, the reinforcing portion 285A, and the reinforcing portion 285B, the reinforcing portion 293, the reinforcing portion 283, the reinforcing portion 285A, and the reinforcing portion 285B are disposed in a narrow region. It's easy to do. For this reason, it is easy to miniaturize the biasing plate 104E.

  The reinforcing portion 295A of the reinforcing portion 295 is formed on the connecting portion 219A. The reinforcing portion 295A is located in the Y-axis direction with respect to the bent portion 254A and the bent portion 255A. The reinforcing part 295A is connected to the reinforcing part 287A and the reinforcing part 289A. In other words, the reinforcing portion 295A reaches the reinforcing portion 289A from the reinforcing portion 287A. A configuration in which the reinforcing portion 295A, the reinforcing portion 287A, and the reinforcing portion 289A are separated from each other can also be employed. However, according to the configuration in which the reinforcing portion 295A is connected to the reinforcing portion 287A and the reinforcing portion 289A, it is easy to arrange the reinforcing portion 295A, the reinforcing portion 287A, and the reinforcing portion 289A in a narrow region. For this reason, it is easy to miniaturize the urging plate 104E.

  Similarly, the reinforcement part 295B of the reinforcement part 295 is formed in the connection part 219B. The reinforcing portion 295B is located in the Y-axis direction with respect to the bent portion 254B and the bent portion 255B. The reinforcing part 295B is connected to the reinforcing part 287B and the reinforcing part 289B. In other words, the reinforcing portion 295B reaches the reinforcing portion 289B from the reinforcing portion 287B. A configuration in which the reinforcing portion 295B, the reinforcing portion 287B, and the reinforcing portion 289B are separated from each other can also be employed. However, according to the configuration in which the reinforcing portion 295B is connected to the reinforcing portion 287B and the reinforcing portion 289B, it is easy to arrange the reinforcing portion 295B, the reinforcing portion 287B, and the reinforcing portion 289B in a narrow region. For this reason, it is easy to miniaturize the biasing plate 104E.

  As shown in FIG. 26, which is an enlarged view of the E portion in FIG. 24, the reinforcing portion 294 is formed on the connecting portion 238. The reinforcing portion 294 is located in the Y-axis direction with respect to the bending portion 262, the bending portion 263A, and the bending portion 263B. The reinforcing portion 294 is connected to the reinforcing portion 284, the reinforcing portion 286A, and the reinforcing portion 286B. In other words, the reinforcing portion 294 reaches the reinforcing portion 286B across the reinforcing portion 284 from the reinforcing portion 286A. In the present embodiment, the reinforcing portion 294 is connected to the reinforcing portion 284, the reinforcing portion 286A, and the reinforcing portion 286B.

  Note that a configuration in which the reinforcing portion 294, the reinforcing portion 284, the reinforcing portion 286A, and the reinforcing portion 286B are separated from each other may be employed. However, according to the configuration in which the reinforcing portion 294 is connected to the reinforcing portion 284, the reinforcing portion 286A, and the reinforcing portion 286B, the reinforcing portion 294, the reinforcing portion 284, the reinforcing portion 286A, and the reinforcing portion 286B are disposed in a narrow region. It's easy to do. For this reason, it is easy to miniaturize the urging plate 104E.

  Of the reinforcing portions 296, the reinforcing portion 296A is formed in the connecting portion 239A. The reinforcing portion 296A is located in the −Y axis direction with respect to the bent portion 264A and the bent portion 265A. The reinforcing portion 296A is connected to the reinforcing portion 288A and the reinforcing portion 290A. In other words, the reinforcing portion 296A reaches the reinforcing portion 290A from the reinforcing portion 288A. A configuration in which the reinforcing portion 296A, the reinforcing portion 288A, and the reinforcing portion 290A are separated from each other can also be employed. However, according to the configuration in which the reinforcing portion 296A is connected to the reinforcing portion 288A and the reinforcing portion 290A, it is easy to arrange the reinforcing portion 296A, the reinforcing portion 288A, and the reinforcing portion 290A in a narrow region. For this reason, it is easy to miniaturize the biasing plate 104E.

  Similarly, the reinforcement part 296B of the reinforcement part 296 is formed in the connection part 239B. The reinforcing portion 296B is located in the −Y axis direction with respect to the bent portion 264B and the bent portion 265B. The reinforcing portion 296B is connected to the reinforcing portion 288B and the reinforcing portion 290B. In other words, the reinforcing portion 296B reaches the reinforcing portion 290B from the reinforcing portion 288B. A configuration in which the reinforcing portion 296B, the reinforcing portion 288B, and the reinforcing portion 290B are separated from each other can also be employed. However, according to the configuration in which the reinforcing portion 296B is connected to the reinforcing portion 288B and the reinforcing portion 290B, it is easy to arrange the reinforcing portion 296B, the reinforcing portion 288B, and the reinforcing portion 290B in a narrow region. For this reason, it is easy to miniaturize the urging plate 104E.

  The reinforcing part 293 to the reinforcing part 296 have the same form as the reinforcing part 281 and the reinforcing part 282 of Example 1, respectively. That is, the reinforcing portions 293 to 296 are formed by locally plastically deforming the plate material 247 that constitutes the urging plate 104E.

  The direction of deformation of the plate member 247 in each of the reinforcing portion 293 to the reinforcing portion 296 may be either a direction that is convex in the −X axis direction or a direction that is convex in the X axis direction. In other words, the direction of deformation of the plate member 247 in each of the reinforcing portion 293 to the reinforcing portion 296 is the first case 62 side, even if it is convex in the direction opposite to the direction approaching the first case 62 (FIG. 12) side. The direction may be convex in the direction approaching.

  In the fifth embodiment, the reinforcing part 293 and the reinforcing part 294 correspond to the third reinforcing part, and the reinforcing part 285 and the reinforcing part 286 correspond to the fourth reinforcing part. Also in the urging plate 104E of the fifth embodiment, the same effect as that of the fourth embodiment is obtained. Furthermore, in the urging plate 104E of the fifth embodiment, the strength of the connecting portion 218, the connecting portion 219, the connecting portion 238, and the connecting portion 239 can be increased. Thereby, the deformation | transformation of the bending with respect to the Z-axis of the connection part 218, the connection part 219, the connection part 238, and the connection part 239, a twist, etc. can be reduced.

  These leg portions 218, 219, 238, and 239 are connected to two leg portions whose inclination directions are opposite to each other. For example, as shown in FIG. 15, the first leg part 211 and the leg part 215 </ b> A are connected to the connecting part 218. In the first leg 211 and the leg 215A, the inclination directions are opposite. For this reason, in the connecting portion 218, moments in opposite directions are generated between the first leg portion 211 and the leg portion 215A. For this reason, deformation such as torsion is likely to occur in the connecting portion 218. The same applies to the other connecting portions 219, 238, and 239.

  On the other hand, in the fifth embodiment, since the reinforcing portions 293 to 296 are formed in the connecting portion 218, the connecting portion 219, the connecting portion 238, and the connecting portion 239, the connecting portion 218, the connecting portion It is possible to reduce deformation of the connecting portion 219, the connecting portion 238, and the connecting portion 239.

  In the fifth embodiment, a configuration in which the direction of deformation of the plate member 247 in the reinforcing portion 281 to the reinforcing portion 296 is a direction that protrudes toward the first case 62 (FIG. 12) side may be employed. In this configuration, the direction of deformation of the plate member 247 can be aligned in the reinforcing portion 281 to the reinforcing portion 296. Thereby, in the reinforcement part formation process, since it can be made easy to form the reinforcement part 281-the reinforcement part 296, manufacture of the urging | biasing board 104E can be made easy. As a result, the cost for manufacturing the urging plate 104E can be easily reduced.

  Moreover, in Example 5, the structure which makes the direction of deformation | transformation of the board | plate material 247 in the reinforcement part 281-the reinforcement part 296 become the direction which protrudes in the direction opposite to the direction approaching the 1st case 62 (FIG. 12) side may be employ | adopted. . Even in this configuration, the direction of deformation of the plate member 247 can be aligned in the reinforcing portion 281 to the reinforcing portion 296. Thereby, in the reinforcement part formation process, since it can be made easy to form the reinforcement part 281-the reinforcement part 296, manufacture of the urging | biasing board 104E can be made easy. As a result, the cost for manufacturing the urging plate 104E can be easily reduced.

  In the first to fifth embodiments, the first urging member 191 is located in the Y-axis direction with respect to the second urging member 192. However, the positions of the first urging member 191 and the second urging member 192 are not limited to this. As the positions of the first urging member 191 and the second urging member 192, a configuration in which the first urging member 191 is positioned in the −Y-axis direction with respect to the second urging member 192 may be employed.

The present invention can be applied not only to an ink jet printer and its ink cartridge, but also to an arbitrary printing apparatus that ejects liquid other than ink and its cartridge. For example, the present invention can be applied to the following various printing apparatuses and cartridges thereof.
(1) An image recording apparatus such as a facsimile apparatus. (2) A printing apparatus that ejects a color material used for manufacturing a color filter for an image display device such as a liquid crystal display. (3) A printing apparatus that ejects an electrode material used for electrode formation such as an organic EL (Electro Luminescence) display and a surface emission display (FED). (4) A printing apparatus that ejects a liquid containing a bioorganic material used for biochip manufacture. (5) Sample printing device as a precision pipette. (6) Lubricating oil printing device. (7) Resin liquid printing apparatus. (8) A printing device that injects lubricating oil pinpoint onto precision machines such as watches and cameras. (9) A printing apparatus that ejects a transparent resin liquid such as an ultraviolet curable resin liquid onto a substrate in order to form a micro hemispherical lens (optical lens) used for an optical communication element or the like. (10) A printing apparatus that ejects an acidic or alkaline etchant to etch a substrate or the like. (11) A printing apparatus including a liquid ejecting head that ejects another arbitrary minute amount of liquid droplets.

  The term “droplet” refers to the state of the liquid ejected from the printing apparatus, and includes liquid droplets that are granular, tear-like, or thread-like. The “liquid” may be any material that can be ejected by the printing apparatus. For example, the “liquid” may be a material in a state in which the substance is in a liquid phase, such as a material in a liquid state having high or low viscosity, and sol, gel water, other inorganic solvents, organic solvents, solutions, Liquid materials such as liquid resins and liquid metals (metal melts) are also included in the “liquid”. Further, “liquid” includes not only a liquid as one state of a substance but also a liquid obtained by dissolving, dispersing or mixing particles of a functional material made of a solid such as a pigment or metal particles in a solvent. The “liquid” as described above can also be expressed as a “liquid material”. As a typical example of the liquid or liquid material, the ink or the liquid crystal described in the above embodiment can be given. Here, the ink includes various liquid compositions such as general water-based ink and oil-based ink, gel ink, and hot-melt ink.

  The present invention is not limited to the above-described embodiments and examples, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments and examples corresponding to the technical features in each embodiment described in the summary section of the invention may be used to solve part or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  DESCRIPTION OF SYMBOLS 1 ... Liquid injection system, 5 ... Printer, 7 ... Cartridge, 11 ... Paper feed roller, 13 ... Carriage motor, 15 ... Drive belt, 17 ... Carriage, 19 ... Print head, 21 ... Control part, 23 ... Flexible cable, 25 ... Holder, 25A ... Bottom part, 33 ... Introduction part, 51 ... Flow path, 53 ... Cylindrical part, 55 ... Filter, 57 ... Packing, 61 ... Case, 62 ... First case, 63 ... Second case, 65 ... Recess , 67 ... inner surface, 71 ... first wall, 72 ... second wall, 73 ... third wall, 74 ... fourth wall, 75 ... fifth wall, 76 ... sixth wall, 77 ... seventh wall, 81 ... bonding 85, supply hole, 86 ... wall, 101 ... valve unit, 104, 104A, 104B ... urging plate, 107 ... sheet member, 109 ... liquid storage portion, 111 ... pressure receiving portion, 112 ... urging portion, 114 ... Vent hole, 113 Atmospheric communication hole, 115 ... atmospheric chamber, 131 ... leaf spring, 133 ... foam, 135 ... filter, 137 ... recess, 141 ... circuit board, 143 ... terminal, 145 ... contact mechanism, 161 ... ink, 163 ... cover valve, 165 ... Lever valve, 167 ... Spring member, 171 ... Air inlet, 173 ... Valve part, 175 ... Lever part, 191 ... First biasing member, 192 ... Second biasing member, 193 ... Connecting member, 195 ... Opening, 197 ... connecting part, 198 ... connecting part, 201 ... one end, 202 ... one end, 203 ... other end, 204 ... other end, 207 ... edge bending part, 211 ... first leg part, 212 ... second leg part, 213 ... Third leg portion, 215A, 215B ... Leg portion, 217A, 217B ... Leg portion, 218 ... Connection portion, 219, 219A, 219B ... Connection portion, 231 ... First leg portion, 232 ... Second leg portion, 233 ... First 3 Part, 235A, 235B ... leg part, 237A, 237B ... leg part, 238 ... connecting part, 239, 239A, 239B ... connecting part, 241, 241A, 241B ... mounting hole, 243, 243A, 243B ... convex part, 245 ... Outline, 247 ... Plate material, 251, 252, 253A, 253B, 254A, 254B, 255A, 255B, 256A, 256B ... Bending part, 261, 262, 263A, 263B, 264A, 264B, 265A, 265B, 266A, 266B ... Bending 281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296 ... reinforcing part, P ... printing paper.

Claims (12)

A liquid storage container having a liquid storage section capable of storing a liquid and capable of supplying the liquid in the liquid storage section to a liquid ejecting apparatus;
A case constituting a part of the inner wall of the liquid container;
A flexible member having flexibility and constituting at least a part of the remaining inner wall of the liquid container;
A pressure receiving member disposed between the case and the flexible member in the liquid container;
A first biasing member provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and is capable of biasing the pressure receiving member from the case side toward the flexible member side;
A second urging member provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member and can urge the pressure receiving member from the case side toward the flexible member side; With
The pressure receiving member has a plate shape;
The first biasing member and the second biasing member are respectively
A first leg connected to the pressure receiving member and extending in a state inclined with respect to the pressure receiving member;
A second leg connected to the first leg on the opposite side of the first leg from the pressure receiving member and extending in an inclined state with respect to the pressure receiving member;
A connecting portion for connecting the first leg and the second leg,
The first leg portion is inclined in a direction approaching the case side from the pressure receiving member side,
The second leg portion is inclined in a direction approaching the case side from the first leg portion side, and is inclined in a direction opposite to the inclination direction of the first leg portion,
A reinforcing part is formed so as to straddle the pressure receiving member and the first leg part,
A liquid container characterized by that. A liquid storage container having a liquid storage section capable of storing a liquid and capable of supplying the liquid in the liquid storage section to a liquid ejecting apparatus;
A case constituting a part of the inner wall of the liquid container;
A flexible member having flexibility and constituting at least a part of the remaining inner wall of the liquid container;
A pressure receiving member disposed between the case and the flexible member in the liquid container;
A first biasing member provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member, and is capable of biasing the pressure receiving member from the case side toward the flexible member side;
A second urging member provided between the pressure receiving member and the case, one end of which is connected to the pressure receiving member and can urge the pressure receiving member from the case side toward the flexible member side; With
The pressure receiving member has a plate shape;
The first biasing member and the second biasing member are respectively
A first leg connected to the pressure receiving member and extending in a state inclined with respect to the pressure receiving member;
A second leg connected to the first leg on the opposite side of the first leg from the pressure receiving member and extending in an inclined state with respect to the pressure receiving member;
A connecting portion for connecting the first leg and the second leg,
The first leg portion is inclined in a direction approaching the case side from the pressure receiving member side,
The second leg portion is inclined in a direction approaching the case side from the first leg portion side, and is inclined in a direction opposite to the inclination direction of the first leg portion,
A reinforcing portion is formed so as to straddle the connecting portion and the first leg portion.
A liquid container characterized by that. The liquid container according to claim 1,
The reinforcing portion has a shape in which a part of the first leg portion and a part of the pressure receiving member are convex in a direction approaching the case side, or a shape in a direction opposite to the direction approaching the case side. Is transformed to have
A liquid container characterized by that. The liquid container according to claim 2,
The reinforcing part has a shape in which a part of the first leg part and a part of the connecting portion are convex in a direction approaching the case side, or a shape in which the part is convex in a direction opposite to the direction approaching the case side. Is transformed to have
A liquid container characterized by that. The liquid container according to claim 1,
When the reinforcing part formed so as to straddle the pressure receiving member and the first leg is defined as a first reinforcing part,
A second reinforcing portion is formed so as to straddle the connecting portion and the first leg portion;
A liquid container characterized by that. The liquid container according to claim 5,
A third reinforcing portion is formed at the connection location,
A liquid container characterized by that. The liquid container according to claim 6, wherein
A fourth reinforcing portion is formed so as to straddle the connecting portion and the second leg portion;
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member that are deformed to have a convex shape toward the case side,
The second reinforcing part is a part of the first leg part and a part of the connecting part deformed so as to have a convex shape toward the case side,
The third reinforcing portion is formed by deforming a part of the connection portion so as to have a convex shape toward the case side,
The fourth reinforcing portion is obtained by deforming a part of the second leg portion and the other part of the connecting portion so as to have a convex shape toward the case side,
The third reinforcing portion is connected to the second reinforcing portion and the fourth reinforcing portion;
A liquid container characterized by that. The liquid container according to claim 6, wherein
A fourth reinforcing portion is formed so as to straddle the connecting portion and the second leg portion;
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member deformed so as to have a convex shape opposite to the direction approaching the case side,
The second reinforcing part is a part of the first leg part and a part of the connecting portion deformed to have a shape that is convex in a direction opposite to the direction approaching the case side,
The third reinforcing portion is formed by deforming a part of the connection portion so as to have a shape that is convex in a direction opposite to the direction approaching the case side,
The fourth reinforcing portion is obtained by deforming a part of the second leg part and the other part of the connecting portion so as to have a shape that is convex in a direction opposite to the direction approaching the case side. ,
The third reinforcing portion is connected to the second reinforcing portion and the fourth reinforcing portion;
A liquid container characterized by that. The liquid container according to claim 5,
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member that are deformed to have a convex shape toward the case side,
The second reinforcing portion is obtained by deforming a part of the first leg portion and a part of the connecting portion so as to have a convex shape toward the case side.
A liquid container characterized by that. The liquid container according to claim 5,
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member deformed so as to have a convex shape opposite to the direction approaching the case side,
The second reinforcing portion is formed by deforming a part of the first leg and a part of the connecting portion so as to have a convex shape in a direction opposite to the direction approaching the case side.
A liquid container characterized by that. The liquid container according to claim 5,
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member deformed so as to have a convex shape opposite to the direction approaching the case side,
The second reinforcing part is a part of the first leg part and a part of the connecting part deformed so as to have a convex shape toward the case side,
A liquid container characterized by that. The liquid container according to claim 5,
The first reinforcing part is a part of the first leg part and a part of the pressure receiving member that are deformed to have a convex shape toward the case side,
The second reinforcing part is a part of the first leg part and a part of the connecting portion deformed to have a shape that is convex in a direction opposite to the direction approaching the case side,
A liquid container characterized by that.

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