Chip and ink cartridge having the same

Abstract

The present invention relates to a chip and an ink cartridge having the chip. The chip is used to contact a contact pin including an upper surface, a lower surface, and a top located between the upper surface and the lower surface. The chip includes a substrate and a terminal arranged on the substrate. When the chip is installed along the installation direction, the terminal contacts the lower surface of the contact pin, so that the contact pin applies a pushing force in the same direction as the installation direction to the terminal. Therefore, when the ink cartridge with the chip is installed, it can be stably combined with an inkjet printer.

Description

Technical Field

[0001] The present invention relates to an ink cartridge detachably mounted in an inkjet printer and a chip mounted on the ink cartridge, wherein the chip is used for establishing a communication connection with the inkjet printer. Background Art

[0002] Currently, after the ink cartridge is installed in the inkjet printer, in order to establish a communication connection between the ink cartridge and the inkjet printer, a chip that stores information such as the ink volume and ink color in the ink cartridge is installed in the ink cartridge. The chip is electrically connected to the inkjet printer to establish a communication connection.

[0003] like Figure 1 As shown, the ink cartridge 10 can be installed along the installation direction A, and includes a cartridge body 11, an ink outlet 12 located on the cartridge body 11, a handle 13 and a chip 20. Along the installation direction A, the ink outlet 12 is located downstream of the cartridge body 11. When the ink cartridge is installed, the ink outlet 12 is combined with the ink suction needle in the inkjet printer. At the same time, the elastic member for sealing the ink outlet 12 is pushed open by the ink suction needle, and the elastic member is elastically deformed. The elastic deformation force tends to push the ink cartridge away from the ink suction needle; the handle 13 is arranged on the side wall of the cartridge body 10 and protrudes outward from the cartridge body 10, wherein a latching position 13a for combining with the inkjet printer is provided. Because the elastic deformation force of the elastic member is offset by the latching position 13a, the ink cartridge 10 can be stably installed.

[0004] like Figure 2A and Figure 2B As shown, a connector 30 for electrically connecting to a chip in an existing inkjet printer includes a connector 30a and a first row of contact pins 31 and a second row of contact pins 32 provided on the connector. Each row of contact pins is composed of a plurality of independent contact pins, wherein the first row of contact pins 31 is composed of a first contact pin 31a, a second contact pin 31b, a third contact pin 31c and a fourth contact pin 32d arranged at intervals, and the second row of contact pins 32 is composed of a fifth contact pin 32a, a sixth contact pin 32b, a seventh contact pin 32c, an eighth contact pin 32d and a ninth contact pin 32e arranged at intervals. The above-mentioned contact pins are arranged in an staggered manner, and the fifth contact pin 32a and the ninth contact pin 32e are located at the two ends respectively.

[0005] Each stylus is roughly triangular in shape and can be Figure 2A The direction indicated by B1B2 is retracted and extended relative to the connector 30a. Taking the third contact pin 31c as an example, contact pin 31c includes an upper surface 31c1, a lower surface 31c3, and a top portion 31c2 located between the upper and lower surfaces 31c1 and 31c3. When the ink cartridge is installed in the inkjet printer, contact pin top portion 31c2 contacts the chip terminal in the ink cartridge to establish a communication connection.

[0006] As the demand for miniaturization of inkjet printers continues to increase, the size of the connector 30 and the size of each contact pin are getting smaller and smaller. Correspondingly, the terminals of the chip in the ink cartridge used for electrical contact with the contact pins are also getting smaller and smaller. Therefore, the manufacturing accuracy of the chip is also getting higher and higher.

[0007] To this end, there are schemes such as those described in Chinese patents CN201510930940.5, CN201620837116.5 and Chinese patent application CN201711397088.5, which use the upper surface 31c1 of the contact pin to contact the chip terminal to establish an electrical connection. As shown in Figures 2 to 14 of Chinese patent CN201510930940.5, Figures 2 to 7 of Chinese patent CN201620837116.5 and Figures 8 and 11 of Chinese patent application CN201711397088.5, along the installation direction P, part of the downstream terminals are hollowed out. During the installation of the ink cartridge into the inkjet printer along the installation direction P, the downstream terminals that are not hollowed out squeeze the corresponding contact pins along the attachment of the present invention. Figure 2A The contact pin is retracted in the direction shown by B1 until the top 31c3 of the contact pin contacts the terminal, as shown in Figure 21 of Chinese patent CN201510930940.5, and the downstream hollow terminal contacts the upper surface 321a of the contact pin; generally speaking, the above-mentioned existing solutions reduce the manufacturing accuracy of the chip by increasing the contact area of ​​the terminal.

[0008] The handle 13 in the existing ink cartridge is formed to protrude outward from the cartridge body 10. There is a risk of the ink cartridge 10 breaking during transportation or installation and disassembly. A common practice is to remove the handle 13. However, for the ink cartridge adopting the above-mentioned solution, as shown in Figure 2, since the contact pin has a tendency to move in the direction indicated by B2, if the upper surface 31c1 of the contact pin is used to contact the chip terminal, the chip 20 together with the ink cartridge 10 will be subjected to a forced thrust applied by the upper surface 31c1 of the contact pin in the opposite direction of the installation direction A. This forced thrust causes the ink outlet 12 of the ink cartridge 10 to have a tendency to separate from the ink suction needle. Coupled with the elastic deformation force of the ink outlet elastic member, the ink cartridge 10 will not be stably combined with the inkjet printer. Summary of the Invention

[0009] For ink cartridges without a handle, the present invention redesigns the chip so that it contacts the lower surface of the stylus. The chip is pressed in the cartridge installation direction using the thrust generated by the stylus extending in the direction indicated by B2, thereby ensuring a stable connection between the ink cartridge and the inkjet printer. To this end, the present invention employs the following technical solutions:

[0010] The chip is used to contact with a contact pin including an upper surface, a lower surface, and a top located between the upper surface and the lower surface. The chip includes a substrate and a terminal arranged on the substrate. When the chip is installed along the installation direction, the terminal contacts the lower surface of the contact pin, so that the contact pin applies a pushing force to the terminal in the same direction as the installation direction.

[0011] As one of the embodiments, the terminal forms surface contact with the contact pin; along the installation direction, the terminal has a first surface located upstream and a second surface located downstream, and both the first surface and the second surface are inclined relative to the installation direction. Measured along the installation direction, in the thickness direction of the chip, the distance between the first surface and the second surface becomes smaller and smaller.

[0012] As another embodiment, the terminal forms a line contact with the contact pin.

[0013] When there are multiple terminals, at least some of the terminals are in contact with the lower surface of the contact pin, and the pushing force applied by the contact pin to the terminal in the same direction as the installation direction is greater than the pushing force applied by the contact pin to the terminal in the opposite direction to the installation direction, or in other words, the number of terminals in contact with the lower surface of the contact pin is not less than the number of terminals in contact with the upper surface of the contact pin.

[0014] When there are multiple terminals and contact pins, the projection points of the top of each contact pin on the chip are connected into a straight line, and the distance between the point where the terminal contacts the lower surface of the contact pin and the straight line is smaller than the distance between the point where the terminal contacts the upper surface of the contact pin and the straight line.

[0015] Preferably, the terminal is formed in an oval shape, and when there are multiple terminals, at least one terminal is formed in a circular shape.

[0016] The present invention also provides an ink cartridge, comprising a cartridge body, an ink outlet located on the cartridge body, and an elastic member for sealing the ink outlet. The ink cartridge can be installed in an inkjet printer provided with an ink suction needle and a contact pin along an installation direction. When the ink cartridge is installed, the ink outlet is combined with the ink suction needle, and the elastic member is pushed open by the ink suction needle and elastically deformed. The ink cartridge also includes the chip as described above. The pushing force applied by the contact pin to the terminal in the same direction as the installation direction at least offsets the elastic deformation force of the elastic member. Therefore, the ink cartridge can be stably installed in the inkjet printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the state of the ink cartridge when it is installed.

[0018] Figure 2A It is a three-dimensional diagram of the connecting parts in the inkjet printer.

[0019] Figure 2B A side view of a stylus in an inkjet printer.

[0020] Figure 3Schematic diagram of the distribution of chip terminals involved in the first embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the distribution of chip terminals involved in the second embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the distribution of chip terminals involved in the third embodiment of the invention. DETAILED DESCRIPTION

[0023] The following describes an embodiment of the present invention in detail with reference to the accompanying drawings. The present invention is based on an improvement to the chip 20 when the handle 13 of the ink cartridge 10 is broken or removed. Therefore, the structural description and component numbers of the ink cartridge 10 and the connector 30 in the inkjet printer described in the background art will be used below.

[0024] Example 1

[0025] Figure 3 Schematic diagram of the distribution of chip terminals involved in the first embodiment of the present invention.

[0026] The chip 20 includes a substrate 21, a plurality of terminals arranged on the substrate 21, and a storage part (not shown) connected to the terminals. The terminals and the storage part are respectively located on two sides of the substrate 21. The terminals are used to contact the connector 30 in the inkjet printer to establish an electrical connection, and the storage part is used to store information such as the amount of ink and the color of ink in the ink cartridge.

[0027] Generally, the number of terminals of the chip 20 is the same as the number of contact pins in the inkjet printer, that is, each terminal corresponds to one contact pin. When the contact pins in the inkjet printer are divided into a first row of contact pins 31 and a second row of contact pins 32 as described in the background technology, in order to reduce the manufacturing accuracy of the chip 20, the terminal distribution in the chip 20 in this embodiment does not correspond to the contact pins in the inkjet printer, that is, the terminals in the chip 20 are not distributed in two rows.

[0028] like Figure 3 As shown, the chip 20 includes a first terminal 201, a second terminal 202, a third terminal 203, a fourth terminal 204, a fifth terminal 205, a sixth terminal 206, a seventh terminal 207, an eighth terminal 208 and a ninth terminal 209, wherein along the mounting direction A, the first terminal 201 to the fourth terminal 204 are generally located upstream of the fifth terminal 205 to the ninth terminal 209. Figure 2A In the B1B2 direction, each terminal extends in a cone shape. Specifically, Figure 3As shown, when measured along the installation direction A or a direction perpendicular to the installation direction A, in the B1 direction, the distance between the outermost sides of each terminal becomes smaller and smaller. Therefore, along the installation direction A, each terminal has a first surface located upstream and a second surface located downstream, and both the first surface and the second surface are inclined relative to the installation direction A.

[0029] Taking the first terminal 201 as an example, along the B1B2 direction, the first terminal 201 is conical. Along the installation direction A, the first terminal 201 has a first surface 201a located upstream and a second surface 201b located downstream, and the first surface 201a and the second surface 201b are both inclined relative to the installation direction A. Measured along the installation direction A, in the B1 (thickness of the chip 20) direction, the distance between the first surface 201a and the second surface 201b becomes smaller and smaller.

[0030] In this embodiment, the first terminal 201, the second terminal 202, the third terminal 203 and the fourth terminal 204 are staggered, and the fifth terminal 205, the sixth terminal 206, the seventh terminal 207, the eighth terminal 208 and the ninth terminal 209 are also staggered; along the installation direction A, the first terminal 201 and the fourth terminal 204 are located upstream of the second terminal 202 and the third terminal 203, and the fifth terminal 205 and the ninth terminal 209 are located upstream of the sixth terminal 206, the seventh terminal 207 and the eighth terminal 208.

[0031] When the ink cartridge equipped with the chip 20 is installed in the inkjet printer, the first contact pin 31a contacts the first terminal 201, the second contact pin 31b contacts the second terminal 202, the third contact pin 31c contacts the third terminal 203, the fourth contact pin 31d contacts the fourth terminal 204, the fifth contact pin 32a contacts the fifth terminal 205, the sixth contact pin 32b contacts the sixth terminal 206, the seventh contact pin 32c contacts the seventh terminal 207, the eighth contact pin 32d contacts the eighth terminal 208, and the ninth contact pin 32e contacts the ninth terminal 209.

[0032] The terminals in this embodiment are generally arranged so that when the terminals contact the contact pins, they do not contact the top of the contact pins, but at least contact the lower surface of the contact pins, so that after the ink cartridge is installed, the contact pins apply a pushing force in the same direction as the installation direction A to the ink cartridge through the terminals. This pushing force can at least offset the elastic deformation force of the ink outlet elastic member. Therefore, even if the ink cartridge 10 does not have a handle 13 / locking position 13a, the ink cartridge 10 can still be stably installed in the inkjet printer.

[0033] like Figure 3As shown, the first terminal 201 to the sixth terminal 206, the eighth terminal 208, and the ninth terminal 209 are all elliptical, and the seventh terminal 207 is circular. Therefore, the upper surface or the lower surface of the contact pin contacts the first terminal 201 to the sixth terminal 206, the eighth terminal 208, and the ninth terminal 209, and the upper surface and the lower surface of the contact pin simultaneously contact the seventh terminal 207. The second surface of the first terminal 201 and the second surface of the fourth terminal 204 form surface contact with the lower surface of the first contact pin 31a and the lower surface of the fourth contact pin 31d, respectively, with the center points of contact being the first contact point P1 and the fourth contact point P4, respectively. The first surface of the second terminal 202 and the first surface of the third terminal 203 form surface contact with the upper surface of the second contact pin 31b and the upper surface of the third contact pin 31c, respectively, with the center points of contact being the second contact point P2 and the third contact point P3, respectively. The second surface of the fifth terminal 205 and the second surface of the ninth terminal 209 form surface contact with the lower surface of the first contact pin 31a and the lower surface of the fourth contact pin 31d, respectively. The lower surface of the fifth contact pin 32a and the lower surface of the ninth contact pin 32e form surface contact, and the center points of contact are the fifth contact point P5 and the ninth contact point P9 respectively; the first surface of the sixth terminal 206 and the first surface of the eighth terminal 208 form surface contact with the upper surface of the sixth contact pin 32b and the upper surface of the eighth contact pin 32d respectively, and the center points of contact are the sixth contact point P6 and the eighth contact point P8 respectively; the first surface and the second surface of the seventh terminal 207 form surface contact with the upper surface and the lower surface of the seventh contact pin 32c respectively, and the center points of contact are P71 and P72 respectively.

[0034] As described above, the stylus will extend and retract in the direction indicated by B1B2. Therefore, when the stylus contacts the upper surface of the stylus, the stylus will apply a pushing force on the chip in the opposite direction of the installation direction A. When the stylus contacts the lower surface of the stylus, the stylus will apply a pushing force on the chip in the same direction as the installation direction A.

[0035] Preferably, the pushing force applied by the contact pin to the terminal in the same direction as the installation direction A is greater than the pushing force applied by the contact pin to the terminal in the opposite direction to the installation direction A. This can be achieved, for example, when the number of terminals in contact with the lower surface of the contact pin is not less than the number of terminals in contact with the upper surface of the contact pin, or when the number of terminals in contact with the upper surface of the contact pin and the number of terminals in contact with the lower surface of the contact pin are the same, the pushing force generated when the lower surface of the contact pin contacts the terminal is greater than the pushing force generated when the upper surface of the contact pin contacts the terminal.

[0036] Continue as Figure 3As shown, when the ink cartridge is installed in the inkjet printer, assuming that the projections of the tops of the first row of contact pins of the connector 30 onto the chip are connected to form a first straight line L1, and the projections of the tops of the second row of contact pins onto the chip are connected to form a second straight line L2, the second surface of the first terminal 201 in this embodiment contacts the lower surface of the first contact pin. Therefore, the first contact pin 31a exerts a urging force F1 on the chip in the same direction as the installation direction A. The first surface of the second terminal 202 contacts the upper surface of the second contact pin. Therefore, the second contact pin 31b exerts a urging force F2 on the chip in the opposite direction of the installation direction A. Furthermore, along the installation direction A, the distance between the first contact point P1 and the first straight line L1 is h1, and the distance between the second contact point P2 and the first straight line L1 is h2. h1 < h2, that is, the first terminal 201 forces the first contact pin 31a to retract more, and conversely, the reaction force exerted by the first contact pin 31a on the first terminal 201 is also greater. Therefore, the aforementioned urging forces satisfy F1 > F2.

[0037] Similarly, along the installation direction A, the distance between the fifth contact point P5 and the second straight line L2 is h3, and the distance between the sixth contact point and the second straight line is h4, h3<h4, that is, the fifth terminal 205 forces the fifth contact pin 32a to retract more, and conversely, the reaction force applied by the fifth contact pin 32a to the fifth terminal 205 is also greater. Therefore, the pushing force applied by the fifth contact pin 32a to the chip through the fifth terminal 205 is greater than the pushing force applied by the sixth contact pin 32b to the chip through the sixth terminal 206.

[0038] Correspondingly, the pushing force applied by the fourth contact pin 31d on the fourth terminal 204 is greater than the pushing force applied by the third contact pin 31c on the third terminal 203, and the pushing force applied by the ninth contact pin 32e on the ninth terminal 209 is greater than the pushing force applied by the eighth contact pin 32d on the eighth terminal 208; finally, on the whole, the pushing force applied by the printer contact pin on the terminal in the same direction as the installation direction A is greater than the pushing force applied by the printer contact pin on the terminal in the opposite direction to the installation direction A, and the ink cartridge 10 can be stably installed in the inkjet printer without a handle.

[0039] Preferably, the first contact point P1 and the fourth contact point P4 form a first connecting line L11, the second contact point P2 and the third contact point P3 form a second connecting line L12, the fifth contact point P5 and the ninth contact point P9 form a third connecting line L15, and the sixth contact point P6 and the eighth contact point P8 form a fourth connecting line L16. Therefore, the force applied by the contact pin to the chip is balanced, the ink cartridge 10 can be stably installed in the inkjet printer, and the staggered arrangement of the terminals reduces the requirements for the position accuracy of the contact pin when the contact pin contacts the terminal.

[0040] Regarding the seventh terminal 207, since the upper surface of the seventh contact pin 32c contacts the first part of the seventh terminal, the center point of contact is P71, and the lower surface of the seventh contact pin 32c contacts the second part of the seventh terminal, the center point of contact is P72, and the top of the seventh contact pin 32c is located on the second straight line L2, the forced thrust from the seventh contact pin 32c applied to the seventh terminal 207 in the installation direction A and the direction opposite to the installation direction A offset each other.

[0041] On the other hand, since the seventh terminal 207 is circular, the first and second parts of the seventh terminal are in contact with the upper and lower surfaces of the seventh contact pin 32 c respectively. Therefore, the seventh terminal 207 also plays a positioning role. When the chip 20 is combined with the connector 30, the seventh contact pin 32 c is snapped into the seventh terminal 207 and a "click" sound is emitted to prompt the user that the ink cartridge 10 has been installed in the predetermined position.

[0042] In this embodiment, the seventh terminal 207 is located in the middle of the fifth terminal 205-the ninth terminal 209, which is beneficial to ensure that the chip 20 is subjected to balanced force. However, the position of the circular terminal can also be adjusted accordingly according to the positions of other terminals. For example, the terminals at the ends of the first straight line L1 and the second straight line L2 are set to be circular, which can also achieve the purpose of stably installing the ink cartridge 10 in the inkjet printer.

[0043] Furthermore, the seventh terminal 207 can also be set to an ellipse so that the lower surface of the seventh contact pin 32c contacts the seventh terminal 207. At this time, the seventh contact pin 32c applies a pushing force in the same direction as the installation direction A to the chip 20 / ink cartridge 10 through the seventh terminal, and the ink cartridge 10 can also be stably installed in the inkjet printer.

[0044] Example 2

[0045] Figure 4 Schematic diagram of the distribution of chip terminals involved in the second embodiment of the present invention.

[0046] In this embodiment, the terminals of the chip are arranged to pass through the substrate 21. Figure 4 In the figure, measured along the direction perpendicular to the installation direction A and the direction in the same direction as the installation direction A, the distance between the outermost sides of the terminals in the direction where B1B2 is located remains unchanged.

[0047] The first terminal 201 to the ninth terminal 209 are redistributed, wherein the first terminal 201 to the sixth terminal 206 and the eighth terminal 208 and the ninth terminal 209 are all elliptical, and the seventh terminal 207 is circular. Along the installation direction A, the downstream of the first terminal 201 to the fifth terminal 205 respectively form a line contact with the lower surface of the corresponding contact pin, the upstream of the eighth terminal 208 and the ninth terminal 209 respectively form a line contact with the upper surface of the corresponding contact pin, and the upstream and downstream of the seventh terminal 207 simultaneously form a line contact with the upper surface and lower surface of the seventh contact pin. Therefore, the chip 20 is subjected to a forced thrust applied by the contact pin in the same direction as the installation direction A, so that the ink cartridge 10 is finally stably installed in the inkjet printer.

[0048] Similarly, in chip 20, the pushing force applied by the contact pin to the terminal in the same direction as the installation direction A is greater than the pushing force applied by the contact pin to the terminal in the opposite direction of the installation direction A. It can be achieved, for example, that the number of terminals in contact with the lower surface of the contact pin is not less than the number of terminals in contact with the upper surface of the contact pin, or as described in Example 1, the positional relationship between each contact point and the first straight line L1 and the second straight line L2 can also be set to satisfy F1>F2, wherein F1 refers to the pushing force applied by the lower surface of the contact pin to the terminal in the same direction as the installation direction A, and F2 refers to the pushing force applied by the upper surface of the contact pin to the terminal in the opposite direction of the installation direction A.

[0049] In this embodiment, the first terminal 201 to the sixth terminal 206, the eighth terminal 208 and the ninth terminal 209 and their corresponding contact points with the contact pins are respectively the first contact point P1, the second contact point P2, the third contact point P3, the fourth contact point P4, the fifth contact point P5, the sixth contact point P6, the eighth contact point P8 and the ninth contact point P9. Along the direction perpendicular to the installation direction A, the straight lines on which the above contact points are located do not overlap. The straight line on which the first contact point P1 is located is L21, the straight line on which the second contact point P2 is located is L22, the straight line on which the third contact point P3 is located is L23, the straight line on which the fourth contact point P4 is located is P24, the straight line on which the fifth contact point P5 is located is L25, the straight line on which the sixth contact point P6 is located is L26, the straight line on which the eighth contact point P8 is located is L28, and the straight line on which the ninth contact point P9 is located is L29. The above-mentioned staggered arrangement of the terminals effectively reduces the requirements on the contact pin position accuracy when the contact pins contact the terminals.

[0050] Example 3

[0051] Figure 5 It is a schematic diagram of the distribution of chip terminals involved in the third embodiment of the invention.

[0052] In this embodiment, each terminal is further extended on the basis of the elliptical shape, so that the terminal is formed along the installation direction A, and an opening is formed upstream of the terminal. In this way, when the ink cartridge 10 is installed in the inkjet printer, the lower surface of each contact pin forms a line contact with the downstream of the terminal. The midpoints of the contact parts of the first terminal 201 to the sixth terminal 206, the eighth terminal 208 and the ninth terminal 209 with the corresponding contact pins are P1-P6, P8 and P9 respectively; wherein in the direction perpendicular to the installation direction A, the contact points P1 and P4 form a first connection line L 31. Contact points P2 and P3 form a second connecting line L32, contact points P5 and P9 form a third connecting line L35, and contact points P6 and P8 form a fourth connecting line L36. In other words, the number of straight lines formed by the contact points between terminals 201-209 and the stylus is greater than two. On the one hand, the ink cartridge 10 can be stably installed in the inkjet printer under the action of the thrust force applied by the stylus in the same direction as the installation direction A. On the other hand, the staggered arrangement of the terminals helps to reduce the requirements for the position accuracy of the stylus when the stylus contacts the terminals.

[0053] In the second embodiment and the present embodiment, similarly, the seventh terminal 207 may also be elliptical, as long as the overall purpose of the ink cartridge 10 receiving the pushing force applied by the contact pin along the installation direction A through the chip 20, thereby forcing the ink cartridge 10 to be stably installed in the inkjet printer, can be met. For example, each terminal may also be diamond-shaped, square-shaped, etc.

Claims

1. A chip for contacting a contact pin comprising an upper surface, a lower surface, and a top portion located between the upper surface and the lower surface, the chip comprising a substrate and a terminal disposed on the substrate, characterized in that: When the chip is installed along the installation direction, when the terminal contacts the lower surface of the contact pin, the contact pin applies a pushing force in the same direction as the installation direction to the terminal; when the terminal contacts the upper surface of the contact pin, the contact pin applies a pushing force in the opposite direction to the installation direction to the terminal; There are multiple terminals and contact pins. In a row of contact pins, the projection points of the top of each contact pin on the chip are connected into a straight line. The multiple terminals matching the row of contact pins include a first terminal and a second terminal arranged in a staggered manner. The distance between the point where the first terminal contacts the lower surface of the contact pin and the straight line is smaller than the distance between the point where the second terminal contacts the upper surface of the contact pin and the straight line. In general, the pushing force applied by the contact pin to the terminal in the same direction as the installation direction is greater than the pushing force applied by the contact pin to the terminal in the opposite direction to the installation direction.

2. The chip according to claim 1, characterized in that The terminal makes surface contact with the contact pin.

3. The chip according to claim 2, characterized in that Along the installation direction, the terminal has a first surface located upstream and a second surface located downstream, and both the first surface and the second surface are inclined relative to the installation direction. Measured along the installation direction, the distance between the first surface and the second surface in the thickness direction of the chip becomes smaller and smaller.

4. The chip according to claim 1, characterized in that The terminal makes line contact with the contact pin.

5. The chip according to claim 1, characterized in that The number of terminals in contact with the lower surface of the contact pin is not less than the number of terminals in contact with the upper surface of the contact pin.

6. The chip according to any one of claims 1 to 5, characterized in that: The terminal is formed in an oval shape.

7. The chip according to claim 6, characterized in that When the number of terminals is plural, at least one terminal is formed in a circular shape.

8. An ink cartridge comprising a cartridge body, an ink outlet located on the cartridge body, and an elastic member for sealing the ink outlet. The ink cartridge can be installed in an inkjet printer provided with an ink suction needle and a stylus along an installation direction. When the ink cartridge is installed, the ink outlet engages with the ink suction needle, and the elastic member is pushed open by the ink suction needle, thereby undergoing elastic deformation. The ink cartridge is characterized in that: The ink cartridge further comprises a chip as claimed in any one of claims 1 to 7, wherein the pushing force applied by the contact pin to the terminal in the same direction as the installation direction at least offsets the elastic deformation force of the elastic member.

Images