CN213138265U

CN213138265U - Clamping device and ink box

Info

Publication number: CN213138265U
Application number: CN202021506597.4U
Authority: CN
Inventors: 陈志远
Original assignee: E Jet Technology Co ltd
Current assignee: E Jet Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-05-07
Anticipated expiration: 2030-07-27

Abstract

The utility model relates to a latch device and have this latch device's ink horn, the latch device is used for combining the ink horn detachably to the ink horn holding portion, the latch device includes unblock subassembly and locking subassembly, wherein, the locking subassembly is used for combining the ink horn with the ink horn holding portion, the unblock subassembly is used for relieving the locking of ink horn and ink horn holding portion, in the process that the ink horn is installed to the ink horn holding portion, the locking subassembly combines the ink horn with the ink horn holding portion in the left and right direction; in the process that the ink box is separated from the ink box installation part, under the action of external acting force, the unlocking assembly applies acting force to the locking assembly in the left-right direction so as to unlock the locking assembly, the resetting piece in the unlocking assembly elastically deforms only when the locking assembly is unlocked, and the probability of deformation fatigue of the resetting piece is greatly reduced.

Description

Clamping device and ink box

Technical Field

The utility model relates to an inkjet formation of image field especially relates to a latch device in detachably installs ink horn and the ink horn in the ink jet printer, and this latch device is arranged in the ink jet printer with the ink horn joint.

Background

The ink cartridge is a part for supplying ink when the ink jet printer is operated, and in order to ensure stable operation of the ink cartridge in the ink jet printer, the ink cartridge and the ink cartridge need to be stably combined. For example, as described in chinese patent CN201520687888.0, the ink cartridge includes a fastener main body 21 extending from the bottom surface 1a in the-Z direction and a first coupling portion 22 extending from the fastener main body 21 in the X-axis direction, the fastener main body 21 is connected to a push rod 32, an abutting surface 36 is provided inside the ink cartridge, an elastic element 34 is provided between the push rod 32 and the abutting surface 36, when the ink cartridge is mounted to the ink jet printer, the first coupling portion 22 is fastened to a first positioning hole 42 in the ink jet printer in the X-axis direction, the elastic element 34 is pressed and deformed, and a pressing force is applied to the push rod 32 in the + X-axis direction, and the first coupling portion 22 and the first positioning hole 42 are tightly coupled through a rotation shaft 33.

When the ink cartridge needs to be taken out, the end user applies a pushing force to the pushing point 31 along the-X direction, the elastic element 34 is further compressed, the pushing rod 32 moves along the-X direction around the rotating shaft 33, and the first combining part 22 moves along the + X direction to be disengaged from the first positioning hole 42.

It can be seen that the elastic member 34 keeps applying the urging force to the push rod 32 is a precondition that the first engaging portion 22 is stably engaged with the first positioning hole 42, that is, the elastic member 34 needs to be kept in a compressed state all the time as long as the ink cartridge is mounted to the ink jet printer, and after being compressed for a long time, the elastic member 34 may be deformed and fatigued to cause non-rebounding, and thus, it is necessary to improve the structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamping device, elastic element among the device no longer takes place elastic deformation for a long time, and only just can make elastic element take place elastic deformation when taking out the operation to the ink horn, therefore, elastic element takes place to warp tired probability and reduces by a wide margin.

Therefore, the utility model adopts the following technical scheme:

the clamping device is used for detachably combining the ink box to the ink box keeping part and comprises an unlocking component and a locking component, wherein the locking component is used for combining the ink box with the ink box keeping part, the unlocking component is used for unlocking the ink box from the ink box keeping part, and the locking component combines the ink box with the ink box keeping part in the left-right direction in the process that the ink box is installed to the ink box keeping part; in the process of disengaging the ink box from the ink box installation part, the unlocking component applies force to the locking component in the left-right direction under the action of external force so as to unlock the locking component.

No transmission of force occurs between the unlocking member and the locking member during the process of mounting the ink cartridge to the cartridge holding portion.

The unlocking assembly comprises a stressed part, a transmission part, a pushing part and a resetting part, wherein the stressed part is used for receiving external acting force, the transmission part is arranged adjacent to the stressed part, the pushing part is connected with the transmission part, and the transmission part is used for transmitting the acting force to the pushing part; when external acting force is applied to the stressed part, the reset part is elastically deformed, and the pushing part is forced to unlock the locking assembly in the left and right directions; when the external acting force is removed, the force receiving part, the transmission part and the pushing part are reset under the reset acting force of the reset part.

The locking assembly includes a pair of coupling levers oppositely disposed in a left-right direction with a first gap therebetween, each of the coupling levers including a vertical rod, an extension portion extending from the vertical rod, and a coupling portion provided on the extension portion, protruding in the left-right direction, for coupling with the ink cartridge holding portion.

The combining part is provided with a combining surface which is vertical to the surface of the adjacent extension part.

As a first embodiment, the two engaging portions protrude toward each other, and when the ink cartridge is disengaged from the ink cartridge holding portion, the urging member is inserted into the first gap, and the engaging lever is urged to move in the left-right direction in the direction away from each other, so that the engaging portion is disengaged from the ink cartridge holding portion.

As the second embodiment, the protruding directions of the two joining portions are opposite, the urging member is an urging rod extending from the transmission member in the left-right direction, and the two urging rods form a second gap between the left-right direction, the second gap gradually decreasing from the rear to the front in the front-rear direction.

When the ink box is separated from the ink box keeping part, the two forcing push rods respectively force the corresponding vertical rods, so that the two vertical rods are gradually close to each other in the left-right direction.

As a third embodiment, the two coupling portions protrude in the same direction, and the urging members are provided in two, and when the ink cartridge is disengaged from the ink cartridge holding portion, one of the urging members is inserted into the first gap, and the other urging member urges the upright rod from a direction opposite to the direction in which the coupling portion protrudes with respect to the extending portion.

As a fourth embodiment, the cartridge holding section includes a bottom plate and a plurality of side plates connected to each other, and a plurality of extension plates extending rearward from the front side plate, the extension plates having a first side surface on the left side, a second side surface on the right side, a third side surface on the rear side, and a fourth side surface on the lower side, and the two joining sections project toward each other to reach the lower side of the extension plates through the first side surface and the second side surface, respectively.

Based on above-mentioned latch device, the utility model discloses still provide an ink horn that detachably and ink horn keeping part combined, this ink horn includes the box body and as above latch device, latch device installs on the box body.

The box body is regular and changeable overall and comprises a bottom shell and a face cover which are combined with each other, the bottom shell is provided with a front side surface positioned in front and a lower side surface positioned below, one part of the clamping device exceeds the front side surface, and the other part of the clamping device exceeds the lower side surface.

The ink box also comprises a chip arranged on the bottom shell, and the part of the clamping device exceeding the lower side surface is positioned below the chip along the up-down direction.

The bottom shell further comprises an ink cavity arranged in the bottom shell and an operation cavity arranged adjacent to the ink cavity, and the clamping device is arranged in the operation cavity.

As described above, the reset member in the unlocking assembly elastically deforms only when the locking of the locking assembly is released, and the probability of deformation fatigue of the reset member is greatly reduced.

Drawings

Fig. 1 is a schematic view showing a state in which an ink cartridge according to an embodiment of the present invention is coupled to an ink cartridge holding portion of an ink jet printer.

Fig. 2A and 2B are perspective views of an ink cartridge according to an embodiment of the present invention.

Fig. 2C is an enlarged schematic view of a portion R in fig. 2B.

Fig. 3A is a side view of the ink cartridge according to the first embodiment of the present invention, which is viewed from left to right after being cut in the front-rear direction.

Fig. 3B is a perspective view of an ink cartridge according to an embodiment of the present invention, viewed from right to left after being cut in the front-back direction.

Fig. 4 is a perspective view of an ink cartridge holding portion of an ink jet printer according to an embodiment of the present invention.

Fig. 5 is a side view of the ink cartridge according to the first embodiment of the present invention, which is viewed from the rear, taken in the left-right direction after being mounted.

Fig. 6 is a perspective view of an ink cartridge according to a second embodiment of the present invention.

Fig. 7 is a perspective view of an ink cartridge according to a second embodiment of the present invention, viewed from the front right to the rear left after being cut in the front-rear direction.

Fig. 8 is a perspective view of an ink cartridge according to a fourth embodiment of the present invention, which is coupled to an ink cartridge holder of an ink jet printer.

Fig. 9 is a perspective view of an ink cartridge according to a fourth embodiment of the present invention.

Fig. 10 is a perspective view of an ink cartridge holding portion in an ink jet printer according to a fourth embodiment of the present invention.

Fig. 11 is a perspective view of an ink cartridge according to a fifth embodiment of the present invention.

Fig. 12 is a perspective view of an ink cartridge according to a fifth embodiment of the present invention, which is combined with an ink cartridge holding portion of an ink jet printer.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

[ example one ]

FIG. 1 is a schematic view showing a state in which an ink cartridge according to an embodiment of the present invention is engaged with an ink cartridge holding portion of an ink jet printer; fig. 2A and 2B are perspective views of an ink cartridge according to an embodiment of the present invention; FIG. 2C is an enlarged schematic view of portion R of FIG. 2B; fig. 3A is a side view of an ink cartridge according to an embodiment of the present invention, viewed from left to right after being cut in the front-rear direction; fig. 3B is a perspective view of an ink cartridge according to an embodiment of the present invention, viewed from right to left after being cut in the front-back direction.

The ink cartridge 100 is detachably combined with an ink cartridge holding part 300 of an ink jet printer, the ink cartridge 100 includes a cartridge body 1 and a latch 2 installed on the cartridge body 1, wherein the cartridge body 1 is a regular multivariable shape as a whole, and includes a bottom case 10 and a cover (not shown) that are combined with each other, an ink outlet 14 for supplying ink to the ink jet printer is provided on the bottom case 10, and the latch 2 is used for latching the ink cartridge 1 to an ink cartridge mounting part 300 of the ink jet printer.

To make the description clear, it is defined herein that the side where the ink outlet 14 is located is below the ink cartridge, the side opposite to the ink outlet 14 is above, the side where the latch 2 is located is front, and the opposite side is rear, and accordingly, when viewed in the backward-forward direction, the left side of the direction is left of the ink cartridge, the right side of the direction is right of the ink cartridge, and the front cover is installed above the bottom case 10.

As shown in the drawing, the bottom case 10 further includes an ink chamber 11 disposed therein and an operation chamber 12 disposed adjacent to the ink chamber 11, and the ink chamber 11 and the operation chamber 12 are isolated by a standing plate 220 described below, so that the operation chamber 12 may not be interfered by ink. Ink is contained in the ink chamber 11 and supplied to the ink jet printer through the ink outlet 14, and the latch 2 is provided in the operation chamber 12, and the latch 2 is located in front of the ink chamber 11 in the front-rear direction of the ink cartridge. Further, the bottom case 10 further has a front side 10a located at the front and a lower side 10b located at the lower side, a part of the latch 2 extends beyond the front side 10a, another part extends beyond the lower side 10b, and the ink outlet 14 is disposed on the lower side 10b and extends downward from the lower side 10 b; typically, the ink cartridge 100 further includes a chip 13 disposed on the bottom case 10, and when the ink cartridge 100 is combined with the cartridge holding part 300, the chip 13 establishes a communication connection with the cartridge holding part 300, and in this embodiment, the chip 13 is also fixed on the front side 10 a.

The shape of the front side surface 10a depends on the shape of the corresponding portion of the ink cartridge holding unit 300, for example, the front side surface 10a in this embodiment is not a straight surface, but is formed by combining a first plane 10a1 and a second plane 10a2 which are adjacent to each other, wherein the first plane 10a1 is parallel to the vertical direction, the second plane 10a2 is inclined with respect to the vertical direction, specifically, from the upper front to the lower rear, and the side adjacent to the first plane 10a is located at a position further forward, a part of the latch 2 exceeds the first plane 10a1, and the chip 13 is fixed on the second plane 10a 2.

The latch device 2 comprises an unlocking component 21 and a locking component 22, wherein the locking component 22 is used for combining the ink cartridge 100 with the ink cartridge retaining part 300, and the unlocking component 21 is used for acting with the locking component 22 after receiving external acting force to release the locking of the ink cartridge 100 and the ink cartridge retaining part 300; the lock assembly 22 couples the ink cartridge to the cartridge holder in the left-right direction while the ink cartridge 100 is coupled to the cartridge mounting part 300, and the unlock assembly 21 applies a force to the lock assembly 22 in the left-right direction by an external force to unlock the lock assembly 22 while the ink cartridge 100 is decoupled from the cartridge mounting part 300.

Referring to fig. 2C, 3A and 3B, the locking assembly 22 includes a pair of coupling rods oppositely disposed in the left-right direction, each of which has the same structure, and one of the coupling rods is described as an example. The coupling lever includes a vertical lever 221, an extension 222 extending from the vertical lever 221, and a coupling portion 223 provided on the extension 222, the coupling portion 223 extending (protruding) from the extension 222 in a direction toward the inside of the ink cartridge 100, that is, the coupling portion 223 on the left coupling lever extends (protrudes) from the extension 222 in a right direction, the coupling portion 223 on the right coupling lever extends (protrudes) from the extension 222 in a left direction, and finally, the coupling portions on the two coupling levers are oppositely arranged in the left-right direction. The engaging portion 223 is formed with an engaging surface 224, and preferably, the engaging surface 224 is perpendicular to the adjacent surface of the extending portion 222, so as to ensure that the locking assembly 22 can stably lock the ink cartridge 100 on the cartridge holding portion 300.

The coupling rod may be formed integrally with the cartridge body 1 or may be formed separately from the cartridge body 1, and the coupling rod is mounted on the cartridge body 1 such that at least the coupling portion 223 extends downward from the lower side surface 10b when the cartridge 100 is assembled, or at least the coupling portion 223 is located below the lower side surface 10b and the coupling portion 223 is located below the chip 13 in the up-down direction. In the present embodiment, in order to obtain a larger amount of deformation of the engaging portion 223, it is preferable that a part of the extending portion 222 is also located below the lower side surface 10 b; the upright rod 221 is disposed in the bottom case 10 in the up-down direction, the locking assembly 22 further includes a base 220, as shown in fig. 3A and 3B, the base 220 is a vertical plate disposed in the bottom case 10, and the upright rod 221 extends downward from the base 220; of course, the upright 221 may also be formed to extend directly downward from the face cover, in which case the face cover may be considered the base 220.

The unlocking assembly 21 comprises a force receiving member 211, a transmission member 212, a pushing member 215 and a resetting member 214, wherein the force receiving member 211 is used for receiving external acting force, the transmission member 212 is arranged adjacent to the force receiving member 211, the pushing member 215 is connected with the transmission member 212, the transmission member 212 is used for transmitting the acting force to the pushing member 215, the pushing member 215 pushes the connecting rod, so that the connecting rod is elastically deformed to release the connection between the ink cartridge 100 and the ink cartridge holding part 300, in the process, the resetting member 214 is elastically deformed, and after the external acting force is cancelled, all the components in the unlocking assembly 21 are reset under the elastic resetting force of the resetting member 214.

As shown in the figure, the urging member 215 is a rod-shaped member extending rearward from the transmission member 212, and one end of the restoring member 214 is connected to the transmission member 212, and the other end is connected to the case 1; preferably, the restoring member 214 is a compression spring, a guide plate is disposed in the operating chamber 12, and the movement of the urging member 215 is guided by the guide plate to precisely apply a force to a predetermined position of the locking assembly 22; more preferably, the unlocking assembly 21 further includes a guide rod 213 extending from the transmission member 212 in the same direction as the urging member 215, the operation chamber 12 is provided with a first guide plate 121 and a second guide plate 122 at an interval, the second guide plate 122 is longer than the first guide plate 121 in the front-rear direction, the first guide plate 121 guides the movement of the guide rod 213 in the front-rear direction, the second guide plate 122 guides the movement of the urging member 215 in the front-rear direction, and the compression spring 214 is sleeved on the guide rod 213 and is located between the first guide plate 121 and the transmission member 212.

The ink cartridge holding portion 300 is defined to have a front, a rear, an upper, a lower, a left, and a right as shown in the figure, based on a state where the ink cartridge 100 is combined with the ink cartridge holding portion 300. The cartridge holding part 300 includes a bottom plate 30a and a side plate 30b connected to each other, the side plate 30b is provided with a plurality of cartridge mounting grooves 31, two coupling holes 32 are provided on the bottom plate 30a corresponding to each cartridge mounting groove 31, and the two coupling holes 32 are partitioned by a partition plate 33 forming a part of the bottom plate 30a in the left-right direction.

In the process of mounting the ink cartridge 100 to the cartridge holder 300, the engaging portion 223 is opposite to the partition 33, and as the ink cartridge 100 is pressed downward, the two opposite engaging portions 223 start to deform in the direction away from each other in the left-right direction until the engaging portion 223 enters the engaging hole 32, and when the ink cartridge 100 is further pressed downward, the engaging surface 224 is fastened to the partition 33, and the locking member 22 is engaged with the cartridge holder 300 in the left-right direction; since the partition plate 33 is a regular rectangular parallelepiped and the joint surface 224 is perpendicular to the adjacent surface of the extension 222, the joint surface 224 and the partition plate 33 can be joined seamlessly, and the ink cartridge 100 is securely mounted on the cartridge holding part 300.

When the ink cartridge 100 needs to be taken out of the ink cartridge holding portion 300, the force receiving member 211 receives a force applied from the front to the rear, the transmission member 212 drives the guide rod 213 and the urging member 215 to move backward, the compression spring 214 is compressed, the urging member 215 enters a first gap g1 formed between two engaging rods in the locking assembly 22, the two engaging rods are forced to open the urging member 215 to move leftward and rightward (in directions away from each other), and further drive the engaging portions 223 to move leftward and rightward, respectively, when the engaging surfaces 224 are disengaged from the partition plate 33, the locking assembly 22 is unlocked, and the ink cartridge 100 is disengaged from the ink cartridge holding portion 300 and taken out upward; when the force is removed, the unlocking assembly 21 starts to move from back to front under the elastic restoring force of the compression spring 214, the urging member 215 gradually moves away from the first gap g1, and the oppositely disposed coupling rods move toward each other to be restored.

Alternatively, the returning member 214 may be disposed between the transmitting member 212 and any one of the fixed members in the operation chamber 12 in the left-right direction. For example, the reset piece 214 is sleeved on the urging piece 215 and is located between the transmission piece 212 and the second guide plate 122 or between the transmission piece 212 and the vertical plate 220, and at this time, the reset piece 214 is a compression spring; the reset member 214 may also be disposed between the front side surface 10a and the transmission member 212, in which case, the reset member 214 is a tension spring; it follows that the return member 214 may use a compression spring when the return member 214 is located rearward of the transmission member 212 and a tension spring when the return member 214 is located forward of the transmission member 212. Of course, the reset member 214 may also be an elastic rubber, a magnetic component, or the like.

As shown in fig. 2C and 5, in order to make the coupling portion 223 have a larger amount of deformation in the left-right direction, the dimension of the extending portion 222 in the left-right direction is smaller the farther away from the upright rod 221, and at this time, the extending portion 222 and the coupling portion 223 also more easily enter the coupling hole 32; preferably, the extension portion 222 is divided into a first portion 222a connected to the upright 221 and a second portion 222b connected to the coupling portion 223, the first portion 222a is located above the second portion 222b, and a dimension of the first portion 222a in the left-right direction is larger than a dimension of the second portion 222b in the left-right direction.

With respect to the urging member 215, as shown in fig. 3A, it is preferable that the free end (the end far from the transmission member 212) of the rod-shaped body 215 is gradually reduced in size, which not only facilitates the rod-shaped body 215 to rapidly enter the first gap g1, but also the rod-shaped body 215 urges the oppositely disposed coupling rods to be gradually separated rather than instantaneously separating to the maximum value after the rod-shaped body 215 enters the first gap g1, so that the probability of breakage of the coupling rods is reduced.

As shown in fig. 2B, 3A and 3B, the cartridge 1 further includes an air vent 15 disposed on the bottom case 10, and the air vent 15 is used for supplementing air to the ink chamber 11 after the ink in the ink chamber 11 is consumed so as to maintain the air pressure in the ink chamber 11 stable, so that the air vent 15 only needs to be communicated with the ink chamber 11. Preferably, the air vent 15 is provided on the lower side 10b and is disposed adjacent to the ink outlet 14, the sealing cover may simultaneously seal the air vent 15 when a sealing cover for sealing the ink outlet 14 is installed, the air vent 15 may be simultaneously opened when the end user opens the sealing cover to use the ink cartridge 100, and a sealing member for sealing the air vent 15 alone may be omitted.

As described above, although the latch device 2 according to the present invention is also provided with the reset piece 214 as an elastic member, the reset piece 214 needs to be elastically deformed only in the process of taking out the ink cartridge 100 from the cartridge holding portion 300; in the operation process of the ink cartridge 100, the reset member 214 is not affected by external force, and therefore elastic deformation does not occur, in the process of mounting the ink cartridge 100 to the cartridge holding portion 300, although the force is applied to the force-receiving member 211 to urge the two oppositely-arranged combining portions 223 to separate in the left-right direction, and further the mounting resistance of the ink cartridge 100 is reduced, even though the force is not transmitted between the unlocking assembly 21 and the locking assembly 22 without the aid of the unlocking assembly 21, the two oppositely-arranged combining portions 223 can be separated in the left-right direction only by applying downward pressure to the ink cartridge 100, and therefore, the probability of deformation fatigue of the reset member 214 in the latch device 2 is greatly reduced.

[ example two ]

FIG. 6 is a perspective view of an ink cartridge according to a second embodiment of the present invention; fig. 7 is a perspective view of an ink cartridge according to a second embodiment of the present invention, viewed from the front right to the rear left after being cut in the front-rear direction.

In the present embodiment, the same components as those in the first embodiment are given the same reference numerals. The locking assembly 22 is still engaged with the cartridge holding part 300 in the left-right direction, and the engaging part 223 is located below the chip 13. The extending (protruding) direction of the combining portion 223 is opposite to the extending (protruding) direction of the combining portion in the first embodiment, as shown in the figure, the combining portion 223 is disposed on both the combining rods, and both the combining portions 223 still extend from the extending portion 222 in the left-right direction, but the extending direction of both the combining portions 223 is opposite, so the combining process of the locking assembly 22 and the bottom plate 30a of the ink cartridge holding portion 30 in the left-right direction is basically the same as the combining process in the first embodiment, except that the deforming direction of the combining rod/combining portion 223 is opposite to the first embodiment when the ink cartridge 100 is taken out from the ink cartridge holding portion 300, and for this reason, the structure of the unlocking assembly 21 in the present embodiment is slightly different.

As shown in fig. 7, the unlocking assembly 21 includes a force receiving member 211, a transmission member 212, a pushing member 217 and a reset member, and the reset member in the present embodiment may be the same as the above-described embodiments and will not be described again. The urging member 217 is an urging rod extending from the transmission member 212, and similarly, the urging rods 217 are two oppositely disposed in the left-right direction, and the two urging rods 217 form a second gap g2 between the left-right direction, and the second gap g2 gradually decreases from back to front in the front-rear direction.

When the ink cartridge 100 needs to be taken out from the cartridge holding part 300, the force receiving part 211 receives a force applied from the front to the rear, the force is transmitted to the urging member 217 through the transmission member 212, the resetting member is elastically deformed, and the urging member 217 gradually moves backward, as described above, since the second gap g2 gradually decreases, the two urging members 217 respectively urge the vertical rods 211 corresponding thereto, so that the two vertical rods 211 gradually approach in the left-right direction, that is, the first gap g1 between the two vertical rods 211 gradually decreases, and at the same time, the coupling part 223 is also gradually disengaged from the bottom plate 30 a; when the force is removed, under the action of the reset force of the reset piece, the transmission piece 212 drives the urging piece 217 to move from back to front, and the two upright rods 211 are gradually separated from each other in the left-right direction to be reset.

[ third example ]

Based on the above two embodiments, the two combining portions 223 may also extend from the extending portion 222 in the same direction, that is, both the two combining portions 223 extend leftwards or rightwards, and the combining process of the locking assembly 22 and the bottom plate 30a of the ink cartridge holding portion 300 is basically the same no matter which direction the two combining portions 223 extend, and will not be described herein; except that the structure of the unlocking assembly 21 is slightly different.

In this embodiment, two urging members of the unlocking assembly 21 may be provided in combination with the above-described two embodiments, that is, one of the urging members may be inserted into the first gap g1 between the two coupling levers, and the other urging member urges the upright rod 221 from the direction opposite to the direction in which the coupling portion 223 protrudes with respect to the extending portion 222, so that, when a force is applied to the force receiving member 221 from the front to the rear, the urging member may transmit the force to the coupling portion 223 so that the coupling portion 223 is disengaged from the bottom plate 30a of the cartridge holding portion 300.

[ example four ]

FIG. 8 is a perspective view of an ink cartridge according to a fourth embodiment of the present invention, in combination with an ink cartridge holder of an ink jet printer; fig. 9 is a perspective view of an ink cartridge according to a fourth embodiment of the present invention; fig. 10 is a perspective view of an ink cartridge holding portion in an ink jet printer according to a fourth embodiment of the present invention.

In this embodiment, the latch is the same as the first embodiment except for the latch position of the cartridge holder 300, and thus, the structure of the unlocking assembly 21 is not shown in fig. 8 to 10, and it is understood that a part of the unlocking assembly 21 extends beyond the front side 10a and the chip 13 is mounted on the front side 10 a.

As shown in fig. 8 and 10, the ink cartridge holding part 300 includes a bottom plate 30a and a plurality of side plates 30b connected to each other, and a plurality of extension plates 30c extending rearward from the front side plate 30b, wherein a plurality of ink outlet receiving parts 31 are provided on the rear side plate 30b, one extension plate 30c corresponding to each ink outlet receiving part 31, and the extension plate 30c has a first side 30c1 on the left side, a second side 30c2 on the right side, a third side 30c3 on the rear side, and a fourth side 30c4 on the lower side (as shown in fig. 12).

The locking assembly 22 in the latch 2 still includes two engaging rods, each of which is provided with the extending portion 222 and an engaging portion 223 extending in the left-right direction from the extending portion 222, the engaging portion 223 is provided with an engaging surface 224 for engaging with the cartridge holding portion 300, the engaging portion 223 is located below the chip 13, and further, the engaging portion 223 is located below the lower side surface 10b, in this embodiment, the two engaging portions 223 extend (protrude) toward each other.

When the ink cartridge 100 is mounted to the cartridge holder 300, as in the first embodiment, the two engaging portions 223 are expanded and deformed in the left-right direction in the direction away from each other to enter the positions facing the first side 30c1 and the second side 30c2, and as the ink cartridge 100 is further mounted downward, the engaging portions 223 reach the lower side of the extension plate 30c, the engaging surface 224 engages with the fourth side 30c4 of the extension plate 30c, and the extension portion 222 faces the first side 30c1 and the second side 30c2, and at this time, the ink cartridge 100 is completely engaged with the cartridge holder 300. When the ink cartridge 100 needs to be removed from the cartridge holding portion 300, the engagement between the ink cartridge 100 and the cartridge holding portion 300 can be released by the unlocking member 21.

[ example five ]

Fig. 11 is a perspective view of an ink cartridge according to a fifth embodiment of the present invention; fig. 12 is a perspective view of an ink cartridge according to a fifth embodiment of the present invention, which is combined with an ink cartridge holding portion of an ink jet printer.

The ink cartridge 100 in this embodiment is not provided with the unlocking unit 21, but is provided with only one projection 4 for engaging with the cartridge holding part 300, the projection 4 having the step face 41 positioned above, as shown in fig. 11, the front side face 10a of the ink cartridge includes a first flat face 10a1 and a second flat face 10a2 which are displaced in the front-rear direction, the second flat face 10a2 is positioned below the first flat face 10a1 in the up-down direction, the chip 13 is positioned on the first flat face 10a1, the projection 4 is positioned on the second flat face 10a2, and the projection 4 is positioned below the lower side face 10 b.

When the ink cartridge 100 is mounted to the cartridge holder 300, the protrusion 4 is pressed against the extension plate 30c and elastically deformed until the protrusion 4 passes over the third side 30c3 of the extension plate from above to below and finally the fourth side 30c4 of the extension plate reaches above the step surface 41, at which time the ink cartridge 100 is positioned by the engagement of the step surface 41 with the fourth side 30c 4.

When the ink cartridge 100 needs to be removed from the cartridge holding portion 300, the end user applies a pulling force upward to the entire ink cartridge 100 in the up-down direction, and the protruding portion 4 is pressed again with the extension plate 30c to be elastically deformed until the protruding portion 4 goes upward beyond the third side 30c3 of the extension plate.

It follows that the protrusion 4 in this embodiment is made of a non-rigid material, for example, the protrusion 4 is injection molded from a plastic material, or made of an elastic material; the projection 4 in this embodiment is elastically deformed only in the coupling process or the decoupling process of the ink cartridge 100 and the cartridge holder 300 as a latch device, and thus the probability of the projection 4 being deformed and fatigued is greatly reduced.

Claims

1. A latch device for detachably coupling the ink cartridge to the ink cartridge holding portion, the latch device including an unlocking assembly for coupling the ink cartridge to the ink cartridge holding portion and a locking assembly for unlocking the ink cartridge from the ink cartridge holding portion, characterized in that,

a locking assembly that engages the ink cartridge with the cartridge holding portion in a left-right direction during the process of the ink cartridge being mounted to the cartridge holding portion;

in the process of disengaging the ink box from the ink box installation part, the unlocking component applies force to the locking component in the left-right direction under the action of external force so as to unlock the locking component.

2. The latch of claim 1 wherein no force is transmitted between the unlatching assembly and the latching assembly during installation of the ink cartridge to the cartridge retaining portion.

3. The clamping device according to claim 1 or 2, wherein the unlocking assembly comprises a force receiving member, a transmission member, a pushing member and a reset member, the force receiving member is used for receiving external acting force, the transmission member is arranged adjacent to the force receiving member, the pushing member is connected with the transmission member, and the transmission member is used for transmitting the acting force to the pushing member;

when external acting force is applied to the stressed part, the reset part is elastically deformed, and the pushing part is forced to unlock the locking assembly in the left and right directions; when the external acting force is removed, the force receiving part, the transmission part and the pushing part are reset under the reset acting force of the reset part.

4. The card-connecting device according to claim 3, wherein the locking assembly includes a pair of coupling bars disposed oppositely in a left-right direction with a first gap therebetween, each of the coupling bars including a vertical bar, an extension portion extending from the vertical bar, and a coupling portion provided on the extension portion, the coupling portion protruding in the left-right direction and adapted to be coupled with the cartridge holding portion.

5. The card connector of claim 4 wherein the engaging portion defines an engaging surface that is substantially perpendicular to the adjacent surface of the extension.

6. The latch according to claim 4, wherein the two engaging portions protrude toward each other, and when the ink cartridge is disengaged from the cartridge holding portion, the urging member is inserted into the first gap to urge the engaging lever in the left-right direction to move in the direction away from each other, and the engaging portions are disengaged from the cartridge holding portion.

7. The clip device of claim 4 in which the two engaging portions project in opposite directions, the urging member is an urging rod extending from the transmission member in the left-right direction, and the two urging rods form a second gap between the left-right direction, the second gap gradually decreasing from back to front in the front-rear direction.

8. The latch according to claim 7, wherein when the ink cartridge is disengaged from the cartridge holding portion, the two urging levers urge the corresponding vertical shafts, respectively, so that the two vertical shafts are gradually closer in the left-right direction.

9. The clip device according to claim 4, wherein the two engaging portions protrude in the same direction, and the urging members are provided in two, and when the ink cartridge is disengaged from the cartridge holding portion, one of the urging members is inserted into the first gap, and the other urging member urges the upright member from a direction opposite to a direction in which the engaging portions protrude with respect to the extending portion.

10. The clip device according to claim 4, wherein the cartridge holding portion includes a bottom plate and a plurality of side plates connected to each other and a plurality of extension plates extending rearward from the front side plate, the extension plates having a first side surface on a left side, a second side surface on a right side, a third side surface on a rear side, and a fourth side surface on a lower side, and the two joining portions project toward each other through the first side surface and the second side surface to reach the lower side of the extension plates, respectively.

11. An ink cartridge detachably engaged with a cartridge holding portion, the ink cartridge comprising a cartridge body and a latch according to any one of claims 1 to 10, the latch being mounted on the cartridge body.

12. The ink cartridge as claimed in claim 11, wherein the cartridge body has a regular multivariable shape as a whole, and includes a bottom case and a top cover combined with each other, the bottom case having a front side located at the front and a lower side located at the lower side, and the latch means has a portion extending beyond the front side and another portion extending beyond the lower side.

13. The ink cartridge of claim 12, further comprising a chip disposed on the bottom case, wherein the portion of the latch that extends beyond the lower side is located below the chip in the up-down direction.

14. The ink cartridge as claimed in claim 13, wherein the bottom case further includes an ink chamber provided therein and an operation chamber provided adjacent to the ink chamber, the latch being provided in the operation chamber.