JP6087516B2 - Coating liquid cartridge - Google Patents

Description

  The present invention relates to a coating liquid cartridge that contains a liquid coating liquid such as ink, glue, or correction liquid and is attached to an applicator main body.

  In recent years, from the viewpoint of effective use of resources and the like, as shown in Patent Document 1, applicators such as marker pens and ballpoint pens using replaceable ink cartridges (also simply referred to as cartridges) have become widespread. This type of applicator is configured such that the case body is provided with a cartridge mounting portion (also simply referred to as a mounting portion), and the cartridge is mounted on the mounting portion. That is, the cartridge has an ink discharge port for allowing the ink inside to flow out, and the ink discharge port communicates with the ink introduction port of the case body, so that ink can be supplied to the pen tip.

  By the way, in a single cartridge sold in the market, the ink discharge port is normally closed with an ink stopper so as to prevent the ink from flowing out from the ink discharge port. In other words, the single cartridge mainly has a cartridge body filled with ink and an ink stopper. For this reason, this kind of single cartridge needs to remove the ink stopper from the cartridge body in order to open the ink discharge port of the cartridge body when the cartridge of the applicator is replaced.

  Therefore, conventionally, from the viewpoint of easy replacement of the cartridge, the cartridge body and the ink stopper are configured to be easily separable. In many cases, a press-fitting type ink stopper is employed to reduce the manufacturing cost. In other words, the ink stopper is provided with a protruding press-fit portion, and the inside of the cartridge main body can be sealed by press-fitting the press-fit portion into the ink discharge port.

However, the cartridge having the press-fitted type ink stopper has a complaint that when the ink stopper is removed, there is a high possibility that the ink will scatter around and contaminate the person himself / herself or the interior of the building. there were.
In brief, when removing the ink stopper press-fitted into the ink discharge port of the cartridge body, it is necessary to apply a force in the direction of separating the ink stopper and the cartridge body. That is, when exchanging the cartridge, the consumer applies a force in a direction away from the cartridge main body, that is, a pulling direction in order to remove the ink plug from the cartridge main body. Then, the ink stopper and the cartridge main body move in the direction of force, so that the ink stopper is detached from the cartridge main body.

However, when the ink stopper is detached in this way, both the ink stopper and the cartridge body are integrated and do not move when the force is applied, but at the moment when the ink stopper is released from the fitted state, May move in directions away from each other. At the moment when the cartridge main body moves in a direction away from the ink stopper, the ink as the contents of the cartridge main body may not follow the movement due to inertial force and may be discharged to the outside from the ink discharge port. That is, there is a risk that the ink will unintentionally leak from the ink discharge port due to the relative movement of the cartridge body and the ink.
As described above, in the prior art, in order to remove the ink stopper from the cartridge main body, the operation of applying a force in the direction of separating the ink stoppers is one of the factors that cause ink scattering.

  Therefore, a measure is devised in which a screw mechanism is provided on the ink lid and the cartridge main body and screwed together to fix them. According to this measure, when removing the ink lid from the cartridge main body, it is not necessary to apply a force in the direction of separating the ink stopper and the cartridge main body as in the press-fit fixing structure. I don't get it.

JP 2011-104982 A

  However, from the viewpoint of manufacturing cost, if a screw mechanism is provided in the ink stopper or the cartridge main body, it leads to a significant increase in cost, so it has to be avoided.

  Therefore, in view of the problems of the prior art, an object of the present invention is to provide a coating liquid cartridge in which ink scattering does not occur when an ink stopper is removed without substantially increasing the manufacturing cost.

The invention described in claim 1 for solving the above-described problems includes a cartridge body provided with a coating liquid discharge port, and a closing member capable of closing the coating liquid discharge port and sealing the inside of the cartridge body. In the coating liquid cartridge, the cartridge body is provided with an extrusion guide protruding so as to surround the coating liquid discharge port, and the extrusion guide has an inclined region in which the protruding top portion is inclined upward along the surrounding direction. The closing member is provided with a sliding portion that comes into contact with the extrusion guide, and when the sliding portion is moved along the upward slope of the inclined region of the extrusion guide, the sealed state of the cartridge main body by the closing member is established. A coating liquid cartridge that is released.
The invention according to claim 2 is a coating liquid cartridge comprising a cartridge body provided with a coating liquid discharge port, and a closing member capable of closing the coating liquid discharge port and sealing the inside of the cartridge body, The cartridge body is provided with an extrusion guide extending so as to surround the coating liquid discharge port, and the extrusion guide has an inclined region in which the protruding top portion is inclined at different upward gradients along the surrounding direction, The closing member is provided with a sliding portion that comes into contact with the extrusion guide. When the sliding portion is moved along the upward slope of the inclined area of the extrusion guide, the sealed state of the cartridge main body by the closing member is released. This is a coating liquid cartridge characterized by the above.

The coating liquid cartridge of the present invention has a function that allows a consumer or the like to easily remove the closing member from the cartridge body without directly applying a force in the direction of separating the cartridge body and the closing member. That is, in the present invention, in order to have such a function, the cartridge body is provided with an extrusion guide that surrounds the coating liquid discharge port, and the closing member is slidable along the inclined area of the extrusion guide. The moving part is provided. Thereby, if the sliding part moves so as to surround the coating liquid discharge port, the closing member can be moved away from the cartridge body in accordance with the upward gradient of the inclined region of the extrusion guide. In other words, according to the present invention, if a consumer or the like applies a force that relatively rotates the closing member and the cartridge body in the circumferential direction with reference to the coating liquid discharge port, the closing member and the cartridge body are separated from each other. Thus, the sealed state of the cartridge body can be released.
Therefore, according to the present invention, it is possible to remove the closing member from the cartridge body by relatively rotating the cartridge body and the closing member. Therefore, when removing the closing member from the cartridge body, the consumer It is not necessary to apply a force directly in the direction of separating the cartridge body and the closing member. Thereby, it is possible to prevent the coating liquid from being unintentionally scattered from the cartridge main body when the blocking member is removed.

Further, in the present invention, since the inclined area of the push-out guide has an upward slope that is different in stages, the force required to relatively rotate the cartridge body and the closing member does not become excessive.
This will be described below.
As described above, the present invention has a configuration in which the cartridge body and the closing member are relatively rotated to move the closing member away from the cartridge body. Therefore, as the ascending slope of the inclined region increases, a larger frictional force can be generated between the sliding portion and the extrusion guide. In particular, when the cartridge main body is sealed by the closing member, for example, when the press-fit fixing type closing member as described above is employed, the sliding operation is performed when the closing member is engaged with the coating liquid discharge port. In addition to the frictional force between the part and the extrusion guide, the fitting force and the frictional force at the fitting part are also added. That is, it can be said that in a state where the cartridge main body is sealed, that is, mainly in an initial stage of the operation of removing the closing member, a frictional force or the like that can be generated when the closing member is rotated with respect to the cartridge main body is likely to be excessive.
Based on such circumstances, the inclined area of the extrusion guide is gradually increased in grades, that is, a gentle up grade until the cartridge body is released from the sealed state, and then the graded up grade. Is preferable.
Therefore, in the present invention, the inclined area of the extrusion guide has different upward gradients in stages. This eliminates the need for the consumer to apply excessive force when rotating the closing member relative to the cartridge body, thereby reducing the burden on the consumer when removing the closing member. Along with this, it is possible to eliminate in advance factors that may cause the coating liquid to leak, such as excessively tilting the posture of the cartridge body in order to apply a large force when removing the blocking member. As a result, it is possible to lower the possibility that the customer accidentally scatters the coating liquid.

According to a third aspect of the invention, extrusion guide is a coating liquid cartridge according to claim 2, characterized in that it has a continuously connected flat regions in the highest portion of the inclined area.

  According to such a configuration, since the sliding portion of the closing member that has passed through the inclined region can be placed on the flat region, even if a consumer releases the force from the closing member, the closing member runs backward in the inclined region. There is no end to it. That is, according to the present invention, there is no possibility that the sealed state is released and the cartridge body is then unintentionally closed again.

Here, for example, when a press-fitting and fixing type closing member is employed, a press-fitting portion is fitted to the coating liquid discharge port. Is preferably deformed in the external direction (the direction in which the opening widens).
Therefore, the invention according to claim 4, extrusion guides, according to claim 2 or 3, characterized in that provided in the separating position fixed above the edge of the opening forming portion for forming a coating liquid discharge port The coating liquid cartridge.

  According to such a configuration, when the coating liquid discharge port needs to be deformed, the extrusion guide does not hinder the deformation, which is preferable when a press-fitting and fixing type closing member is employed.

In the invention according to claim 5 , the closing member has a press-fitting portion that is press-fitted into the coating liquid discharge port, and the inclined region has a gentle slope portion with a predetermined upward slope disposed on the bottom side, The press-fit part fitted to the coating liquid discharge port is composed of a steep slope part with a steep upward slope than the gentle slope part arranged on the topmost part side. The coating liquid cartridge according to any one of claims 2 to 4 , wherein the fitting state with the coating liquid discharge port is released at a timing of shifting to (5).

According to such a configuration, while the press-fitting portion of the closing member is fitted to the coating liquid discharge port, the sliding portion of the closing member moves along the gentle gradient portion, so that a consumer or the like can move the cartridge body with a small force. The sealed state can be released.
In the present invention, since the sliding portion of the closing member can be moved on the steep slope portion after the sealed state of the cartridge body is released, the closing member can be greatly separated from the cartridge body accordingly. it can. This makes it easy to visually recognize whether or not the cartridge body is released from the sealed state, so that there is almost no risk that the customer or the like will accidentally turn the cartridge body upside down after the cartridge body is released from the sealed state. . That is, in the present invention, it is impossible to cause a problem that the cartridge body is misrecognized as being sealed and the coating liquid is spilled.

In the coating liquid cartridge of the present invention, it is desirable that the gentle gradient portion has a gradient of 2 to 3 degrees, and the steep gradient portion has a gradient of 15 to 17 degrees. (Claim 6 )

Here, in order to sufficiently maintain the airtightness of the cartridge main body, although depending on the internal pressure of the cartridge main body, etc., the fitting area between the press-fitting part of the closing member and the coating liquid discharge port is the insertion / extraction direction of the press-fitting part It is empirically desirable that the thickness is about 1.2 to 1.3 mm.
Accordingly, in the invention according to claim 7 , the closing member moves within the range of 1.2 to 1.4 mm in the direction away from the cartridge main body when the sliding portion moves along the gentle gradient portion. The coating liquid cartridge according to claim 5 or 6 , wherein

  According to this configuration, since the sealed state of the cartridge main body can be released with the distance while minimizing the moving distance of the press-fitting portion of the closing member, the burden on the consumer when removing the closing member is extremely small. It can be.

The invention according to claim 8 is the coating liquid cartridge according to any one of claims 2 to 7 , wherein the extrusion guide has a plurality of inclined regions on the same virtual circle.

  According to such a configuration, the closing member can be moved away from the cartridge body in a well-balanced direction, so that a part of the closing member is caught by any part of the cartridge body and the closing member is twisted. It's hard to get up.

  In the coating liquid cartridge of the present invention, the cartridge main body and the closing member can be relatively rotated to separate them from each other, so that the coating liquid does not scatter when the closing member is removed. In addition, since the extrusion guide is provided with an inclined area having different upward gradients in stages, the force required to remove the closing member is not excessive, and whether the cartridge body is released from the sealed state visually It will be possible to recognize.

It is a perspective view showing an ink cartridge according to an embodiment of the present invention. FIG. 2 is a perspective view of the ink cartridge of FIG. 1 viewed from another angle. FIG. 2 is an exploded perspective view of the ink cartridge of FIG. 1. FIG. 2 is a longitudinal sectional view showing the ink cartridge of FIG. 1. It is a perspective view which shows the edge part formation member which paid its attention to the extrusion guide. It is sectional drawing which shows an edge part formation member, and is sectional drawing from a different direction from FIG. It is a top view which shows an edge part formation member. It is an expanded view which shows an extrusion guide. It is the perspective view which looked at the ink stopper from the back side. It is the top view which looked at the ink stopper from the back side. It is explanatory drawing which shows the state by which the cartridge main body and the ink stopper were fitted, (a) is a perspective view which shows the relationship between the sliding part of an ink stopper, and the extrusion guide of a cartridge main body, (b) is sliding It is the longitudinal cross-sectional view cut in the position of the part. (The sliding part shown in (a) is indicated by dots) It is explanatory drawing which shows the state by which fitting with the cartridge main body and the ink stopper was cancelled | released, (a) is a perspective view which shows the relationship between the sliding part of an ink stopper, and the extrusion guide of a cartridge main body, (b) is It is the longitudinal cross-sectional view cut in the position of a sliding part. (The sliding part shown in (a) is indicated by dots) FIG. 4 is an explanatory view showing a state in which the ink plug is guided to the steep slope portion after the engagement between the cartridge main body and the ink plug is released, (a) is a sliding portion of the ink plug and an extrusion guide of the cartridge main body. (B) is the longitudinal cross-sectional view cut in the position of a sliding part. (The sliding part shown in (a) is indicated by dots) FIG. 4 is an explanatory view showing a state in which the ink plug is placed on the high level flat part after the cartridge body and the ink plug are released from the fitting, and FIG. It is a perspective view which shows the relationship with a guide, (b) is the longitudinal cross-sectional view cut in the position of a sliding part. (The sliding part shown in (a) is indicated by dots) It is a perspective view which shows the applicator with which the cartridge main body of FIG. 1 was mounted | worn. It is a disassembled perspective view which shows the applicator of FIG. It is a longitudinal cross-sectional view which shows the applicator of FIG. (A) is a perspective view which shows the modification of an edge part formation member, (b) is an expanded view which shows the edge part formation member of (a). (A) is a perspective view which shows another modification of an edge part formation member, (b) is an expanded view which shows the edge part formation member of (a). (A) is a perspective view which shows the modification of an ink stopper, (b) is an expanded view which shows the ink stopper of (a). It is a disassembled perspective view which shows the modification of an ink stopper and an edge part formation member. It is a disassembled perspective view which shows another modification of an ink stopper and an edge part formation member. It is explanatory drawing which shows the airtight state of the ink cartridge of FIG.

The ink cartridge (coating liquid cartridge) 1 according to the embodiment of the present invention will be described below.
The ink cartridge 1 of the present embodiment is an ink supply tank mounted on a predetermined applicator main body 50, and as shown in FIGS. 1 and 2, a cartridge main body 2 filled with ink and a cartridge main body. 2 is configured to include an ink stopper (blocking member) 3 that prevents leakage of unnecessary ink from the ink 2.

As shown in FIG. 3, the cartridge main body 2 includes a tank member 5 having one end opened, and an end forming member 6 attached to the open end of the tank member 5.
As shown in FIGS. 3 and 4, the tank member 5 has a substantially cylindrical appearance, one end of the cylinder in the axial direction is open (also referred to as a tank open end), and the other end is closed (tank It is a bottomed structure (also referred to as a closed end). That is, the tank member 5 has a space (internal space) 20 in which ink is stored inside the cylinder. More specifically, the tank member 5 has a tank side wall 30 that forms a cylindrical side wall, and a tank end surface wall 31 that forms an end wall of a tank closed end, and the internal space 20 is formed by them. Yes.

The tank member 5 further includes an inner peripheral protrusion 23, two engagement protrusions 21, and an outer peripheral step portion 24.
The inner peripheral projection 23 is a convex portion that is located on the tank open end side and is formed along the inner side surface of the tank side wall 30.
The engagement protrusion 21 is a portion that protrudes in the axial direction with the edge of the tank open end as the base end, and has a square shape when viewed from the front. The engaging protrusion 21 is set to have a size equivalent to or slightly smaller than an engaging groove 22 of the end forming member 6 described later.
The outer peripheral step 24 is a single spiral step formed on the tank closed end (tank end wall 31 side) and formed along the outer surface of the tank side wall 30.

As shown in FIG. 5, the end forming member 6 includes a cylindrical tube body 11, a cylindrical discharge portion 12 that guides the ink stored in the tank member 5 to the outside, and an extrusion guide having a cam function. 13.
As shown in FIG. 6, the cylindrical body 11 has one end in the axial direction opened (also referred to as an end open end) and the other end closed (also referred to as an end closed end). It has a bottomed structure, and an end space 29 is formed inside. More specifically, the cylindrical body 11 has an end side wall 32 that forms a side wall of a cylinder, and an end end surface wall 33 that forms an end wall of the end closed end, and thereby the end portion A space 29 is formed.

The cylindrical body 11 further includes an outer peripheral protrusion 25, two engagement grooves 22, and one end surface through hole 35.
The outer peripheral ridge 25 is a step portion formed on the outer side surface of the end side wall 32 and is a portion that engages with the inner peripheral protrusion 23.
The engagement groove 22 is a notch-shaped groove part formed in the edge part of the end part end wall 33, and the shape seen from the front is made into a square shape. The size is set equal to or slightly larger than the engagement protrusion 21 of the tank member 5.
The end surface through-hole 35 is a hole that is located substantially at the center of the end portion end surface wall 33 and penetrates in the member thickness direction of the end portion end surface wall 33.

  As described above, the discharge part (coating liquid discharge port) 12 is provided on the end closed end part, that is, the end part end wall 33, and is orthogonal to the end part end wall 33 (end part forming member). 6 axial direction) is a cylindrical portion protruding outward. More specifically, as shown in FIG. 4, the discharge part 12 protrudes in the opposite direction to the end side wall 32 of the cylindrical body 11, and the base end side thereof is connected to the end surface through hole 35 of the cylindrical body 11. It is arranged to communicate. The discharge section 12 has an inner diameter set to be approximately the same as the opening diameter of the end surface through hole 35 or slightly larger than the diameter. In other words, the discharge unit 12 communicates with the end space 29 of the cylindrical body 11 through the end surface through hole 35. In other words, the ejection part 12 is a part that functions as an ink ejection port through which the ink that has passed through the end surface through hole 35 flows out.

Further, an additional note will be made regarding the inner diameter of the discharge section 12.
As described above, the ejection portion of the cartridge body needs a function capable of intentionally distributing ink as an ink ejection port. However, on the other hand, it is necessary to have a function of preventing the ejection portion ink from leaking unintentionally. In other words, it is desirable that the ejection part of the cartridge main body does not drop ink even when the ejection part in the open state is directed downward at some time. Therefore, in the present embodiment, the inner diameter of the discharge unit 12 is set in the range of more than 3.0 mm to less than 4.0 mm, preferably 3.2 mm to 3.8 mm. Further, the inner diameter of the discharge unit 12 is more preferably 3.4 mm to 3.6 mm, and the most preferable inner diameter of 3.5 mm is employed in the present embodiment.

  Moreover, as shown in FIG. 6, the discharge part 12 is provided with the to-be-fitted part 36 in the inner surface. The fitted portion 36 is a portion in which the inner diameter of the discharge portion 12 is narrowed, and is a region f from approximately the center in the axial direction of the discharge portion 12 to the base end. Specifically, the region f occupied by the fitted portion 36 is from the position closer to the proximal end in the axial direction about 2.5 to 3.0 mm from the distal end of the discharge portion 12 to the proximal end. That is, the discharge part 12 is configured such that the inner diameter on the tip side other than the region f is slightly wider than the inner diameter of the fitted part 36.

  The extrusion guide 13 is provided on the end end wall 33 of the cylindrical body 11 and is formed so as to project in the direction orthogonal to the end end wall 33 (the axial direction of the end forming member 6). The wall. Specifically, as shown in FIG. 5, the extrusion guide 13 is roughly divided into an inclined region 15 in which an overhang length (standing height) changes with an end edge wall 33 as a reference, and an overhang length ( The flat region 16 has a constant height. As shown in FIG. 7, the extrusion guide 13 is arranged so that the shape in plan view is circular by the inclined region 15 and the flat region 16, and the protruding top portion has a protruding top portion in the circumferential direction. It is configured to be inclined.

  More specifically, in this embodiment, as shown in FIGS. 7 and 8, the extrusion guide 13 has a single guide region 17 that includes the inclined region 15 and the flat region 16 as one set, and two sets of the guide 13. It is formed by combining the single guide regions 17a and 17b. The extrusion guide 13 is arranged such that the center of a circle formed by combining the two sets of single guide regions 17a and 17b coincides with the axis of the discharge unit 12, and the diameter of the extrusion guide 13 is The discharge part 12 is configured to be larger than the outer diameter. That is, the extrusion guide 13 is disposed so as to be surrounded by a position on the radially outer side of the discharge unit 12. In this embodiment, the inner surface of the extrusion guide 13 is separated from the outer surface of the discharge unit 12 by a certain distance, and a gap 41 is formed between the extrusion guide 13 and the discharge unit 12.

  In addition, each single guide region 17 has a configuration including the inclined region 15 and the flat region 16 as described above. In the present embodiment, the inclined region 15 and the flat region 16 have further subdivided regions. That is, the inclined region 15 has two regions having different gradients in the circumferential direction. Specifically, as shown in FIGS. 5 and 8, the inclined region 15 includes a gentle gradient portion 18 having a gentler gradient than one region and a steep gradient portion 19 having a steeper gradient than the other region, In this configuration, the slope changes gradually from a gentle slope to a steep slope.

  As shown in FIGS. 7 and 8, the gentle gradient portion 18 is a partial region of the single guide region 17 and is a region (arc region) having an angle t of 110 to 113 degrees opened in the circumferential direction, preferably The angle t is a circular arc region of 112 degrees, and the protruding top portion (standing top portion) is an upward slope (gradient toward the protruding direction) α of 2-3 degrees, preferably an upward slope α of 3 degrees. is there. In this embodiment, the inclination of the gentle gradient portion 18 exhibits an upward gradient counterclockwise in a state where the extrusion guide 13 is viewed in plan.

  The steep slope portion 19 is a partial region of the single guide region 17, and the angle u opened in the circumferential direction starts from the top of the gentle slope portion 18 (end point portion along the slope of the upward slope). An arc region of 23 to 26 degrees, preferably an arc region having an angle u of 25 degrees, and a protruding top portion (standing top portion) having an upward slope of 15 to 17 degrees (gradient toward the protruding direction) β, preferably 17 This is the part that has an upward slope β. That is, the steep slope portion 19 exhibits an upward slope in the counterclockwise direction, like the gentle slope portion 18.

  On the other hand, the flat region 16 is provided at two positions sandwiching the inclined region 15. Specifically, as shown in FIGS. 3 and 5, the flat region 16 has a lower flat portion 26 that has a shorter (lower) protruding length (standing height) than one region, and an extended region than the other region. This is a configuration including a high level flat portion 27 having a long length (standing height).

  As shown in FIGS. 6 and 7, the lower flat portion 26 is a part of the single guide region 17 and is a circular arc region having an angle s of 8 to 11 opened in the circumferential direction, preferably an angle s of 10 degrees. It is a circular arc region, and is a portion where the protruding length (standing height) from the end face wall 33 of the cylindrical body 11 is about 1.0 to 1.2 mm. The lower flat portion 26 is continuously connected to one end portion in the circumferential direction (end point portion in the counterclockwise direction) at the bottom of the gentle gradient portion 18 (start point portion along the upward gradient). . In other words, the lower flat portion 26 corresponds to the starting point of the single guide region 17 with reference to the counterclockwise direction.

  The high level flat portion 27 is a part of the single guide region 17 and is an arc region having an angle v of 31 to 34 degrees opened in the circumferential direction, preferably an arc region having an angle v of 33 degrees. This is a portion where the overhang length (standing height) from the end face wall 33 of the main body 11 is about 4.0 to 4.2 mm. In the high flat portion 27, the topmost portion of the steep slope portion 19 is continuously connected to one end portion (counterclockwise start point portion) in the circumferential direction. In addition, as to the connection portion 40 between the steep slope portion 19 and the high level flat portion 27, as shown in FIGS. 5 and 8, the protruding top portion is formed in a smooth curved shape. Specifically, the connecting portion 40 has a shape exhibiting a clothoid curve in which the curvature of the protruding top portion changes at a constant rate.

In this way, each single guide region 17 has a low flat portion (flat region) 26, a gentle gradient portion (inclined region) 18, a steep gradient portion (inclined region) 19, and a high flat portion (flat) in the counterclockwise direction. Are arranged in the order of (region) 27 and occupy an arc region (semicircle) opened at 180 degrees out of the circumference of the extrusion guide 13. That is, as shown in FIGS. 7 and 8, the extrusion guide 13 has two single guide regions 17a and 17b arranged in the circumferential direction, and the high level flat portion 27 of one single guide region 17a and the other single guide region. The lower flat portion 26 of 17b is connected, and the lower flat portion 26 of one single guide region 17a and the high flat portion 27 of the other single guide region 17b are connected to form a series of circular walls. .
For convenience, in FIG. 5, the connection portion between the lower flat region 26 and the gentle gradient portion 18 and the connection portion between the gentle gradient portion 18 and the steep gradient portion 19 are drawn so that the angle changes suddenly. However, as the actual shape of these connecting portions, it is preferable that the angle changes smoothly. However, in the present invention, as shown in FIG. 5, the connection portion may have a configuration in which the angle changes suddenly.

As shown in FIGS. 3 and 9, the ink stopper 3 includes a bottomed cap body 7 whose one surface is open, a protruding press-fit portion 8 and a sliding portion 9 provided inside the cap body 7. It consists of and.
The cap body 7 is cylindrical in appearance, and includes a cap side wall 45 that forms a side wall, and a cap end surface wall 46 that forms one end wall of the cylinder, and is further surrounded by a cap space. 47.

  The press-fit portion 8 is a portion that is located in the cap space 47 and protrudes toward the open end side of the cap body 7 with the cap end surface wall 46 as a base end. The press-fit portion 8 has a substantially circular cross-sectional shape, and an insertion facilitating portion 48 is provided on the distal end side in the protruding direction (the axial direction of the cap body 7). The insertion facilitating portion 48 is a portion in which the cross-sectional area of the press-fit portion 8 is narrower than other portions, and is a region from a position in the protruding direction of the press-fit portion 8 to the tip. Specifically, the area occupied by the insertion facilitating portion 48 is about 1.5 to 1.8 mm from the midway in the protruding direction of the press-fit portion 8 to the tip.

  The sliding portion 9 is a portion located in the cap space 47 and protruding from the inner side surface of the cap side wall 45. Specifically, the sliding portion 9 is a ridge that extends linearly in the axial direction of the cap body 7. In this embodiment, the sliding portion 9 is provided at two locations on one cap body 7, and the sliding portions 9 a and 9 b are arranged so as to face each other on the diameter of the cap body 7. In other words, as shown in FIG. 10, the two sliding portions 9a and 9b are arranged such that the press-fitting portion 8 is located on the straight line and in the center when connected by a single straight line.

Subsequently, the positional relationship of each member of the ink cartridge 1 of the present embodiment will be described.
The ink cartridge 1 of the present embodiment is sold in a state where the cartridge main body 2 is sealed by the ink stopper 3. Therefore, in the following, the positional relationship of each member will be described based on the ink cartridge 1 to which the ink stopper 3 is attached.

  As shown in FIGS. 1 to 3, the ink cartridge 1 has an end forming member 6 attached to the tank open end of the tank member 5 to form a cartridge main body 2, and a discharge portion of the end forming member 6. An ink stopper 3 is attached so as to close the nozzle 12. Specifically, as shown in FIG. 4, the cartridge body 2 is arranged so that the end side wall 32 of the end forming member 6 is positioned on the inner space 20 side of the tank member 5. The end forming member 6 and the tank member 5 are configured so that the edge of the end end wall 33 is in contact with the tank open end, that is, the engaging groove 22 of the end forming member 6 is set to the tank member 5. In the posture (FIGS. 1 and 2) engaged with the engaging protrusions 21 of FIG. 1, the outer peripheral protrusions 25 of the end portion forming member 6 are engaged with the inner peripheral protrusions 23 of the tank member 5 (FIG. 4), and both are integrated. Connected. In other words, the rotation of the tank member 5 and the end portion forming member 6 in the circumferential direction is restricted by the engagement of the engagement groove 22 and the engagement protrusion 21.

  The press-fitting portion 8 of the ink plug 3 is press-fitted and fitted into the discharge portion 12 of the end forming member 6 of the cartridge body 2. Specifically, as shown in FIG. 4, the ink stopper 3 has an insertion facilitating portion 48 located on the distal end side of the press-fitting portion 8, located in the fitted portion 36 of the discharge portion 12. A part of the portion 8 closer to the base end than the insertion facilitating portion 48 (a press-fitting fitting region) is press-fitted and fitted into the fitted portion 36. More specifically, the press-fitting portion 8 is arranged so that the press-fitting fitting region ensures about 1.2 mm in the press-fitting direction.

  At the same time, the ink stopper 3 is also arranged so that the sliding portion 9 comes into contact with the extrusion guide 13. Specifically, as shown in FIG. 11, the sliding portions 9a and 9b of the ink stopper 3 are disposed in the lower flat portions 26 of the different single guide regions 17a and 17b, respectively.

Next, the operation when the ink stopper 3 is removed from the cartridge body 2 will be described.
The ink cartridge 1 of the present embodiment has a function of separating the cartridge main body 2 and the ink stopper 3 by rotating them relative to each other in the circumferential direction of the axis of the ink cartridge 1.
That is, in the state where the cartridge main body 2 is sealed (FIG. 11), the cartridge main body 2 is fixed with the ink cartridge 1 in an upright state, that is, in a posture in which the axis of the ink cartridge 1 is oriented substantially vertically. A force is applied to the stopper 3 in the counterclockwise direction. Then, the ink stopper 3 rotates with respect to the cartridge body 2. Specifically, immediately before the ink stopper 3 is rotated, the sliding portions 9 a and 9 b of the ink stopper 3 are both positioned at the lower flat portion 26 of the extrusion guide 13 in the cartridge body 2, and When the clockwise force is applied, the sliding portions 9 a and 9 b move toward the gentle gradient portion 18 adjacent to the lower flat portion 26. Then, when the sliding portions 9a and 9b of the ink stopper 3 move to the gentle gradient portion 18 of the cartridge main body 2, the inclination is driven up by the rotational force. That is, the sliding portions 9 a and 9 b move along the gentle gradient portion 18, and accordingly, the ink stopper 3 moves in a direction away from the cartridge body 2. As a result, the press-fitting portion 8 of the ink stopper 3 moves in the direction of pulling out from the ejection portion 12 of the cartridge body 2.

  Then, as shown in FIG. 12, when the sliding portions 9a and 9b of the ink plug 3 reach the end point in the counterclockwise direction of the gentle gradient portion 18 of the cartridge body 2 (the topmost portion of the gentle gradient portion 18), the ink The stopper 3 is further separated from the cartridge main body 2, and the fitting state between the press-fit portion 8 and the discharge portion 12 is released. That is, the press-fitting portion 8 of the ink plug 3 shown in FIG. 12 rotates from the state immediately before the start of the rotation of the ink plug 3 shown in FIG. 11 by rotating the ink plug 3 relative to the cartridge body 2. It moves a certain distance g (in this embodiment, 1.20 to 1.40 mm, preferably about 1.30 mm) in the pull-out direction. In other words, when the sliding portions 9a and 9b move from the bottom to the top of the gentle gradient portion 18, the ink plug 3 moves away from the cartridge body 2 from the state shown in FIG. Move g.

  When the ink plug 3 is further rotated counterclockwise from the state where the press-fitting portion 8 of the ink plug 3 and the ejection portion 12 of the cartridge body 2 are released, as shown in FIG. The sliding portions 9a and 9b move to the steep slope portion 19 of the cartridge body 2. Then, the sliding portions 9 a and 9 b move along the steep slope portion 19, and accordingly, the ink stopper 3 moves greatly in a direction away from the cartridge body 2. Specifically, if the sliding portions 9a and 9b move from the bottom to the top of the steep slope portion 19, the ink plug 3 is moved from the state immediately after the fitting of the ink plug 3 shown in FIG. Then, it moves a certain distance h (in this embodiment, about 2.00 to 2.10 mm) in a direction away from the cartridge body 2.

  When the ink stopper 3 further rotates and the sliding portions 9 a and 9 b of the ink stopper 3 pass through the steep slope portion 19, the sliding portions 9 a and 9 b are connected via the curved connection portion 40. Then, the high level flat portion 27 is transferred (FIG. 14). That is, the ink stopper 3 has the sliding portions 9a and 9b placed on the high level flat portion 27, so that the maximum separation distance j from the cartridge body 2 by the steep slope portion 19 (the distance from the position in FIG. 11). Is maintained.

  As described above, the present embodiment is configured such that the ink plug 3 can be detached from the cartridge body 2 by relatively rotating the cartridge body 2 and the ink plug 3 around the axis. Specifically, the ink cartridge 1 moves the ink stopper 3 in a direction away from the cartridge body 2 by moving the sliding portions 9 a and 9 b of the ink stopper 3 along the inclined region 15 of the push-out guide 13. It is the structure which can be made to do. Accordingly, when removing the ink stopper 3 from the cartridge body 2, it is not necessary to pull the cartridge body 2 or the ink stopper 3 relative to the other, so that the ink stored in the cartridge body 2 is inadvertent. Can be prevented from being scattered.

  Furthermore, in this embodiment, since the inclined region 15 has a configuration in which the gradient changes stepwise, specifically, a configuration having a gentle gradient portion 18 and a steep gradient portion 19, the cartridge main body 2 and the ink plug 3 are configured. The frictional force that can occur between the two can be reduced. That is, in this embodiment, when the press-fitting portion 8 of the ink plug 3 is fitted to the discharge portion 12 of the cartridge body 2 and the inside of the cartridge body 2 is sealed, the sliding portions 9a and 9b of the ink plug 3 are When the cartridge body 2 moves on the gentle gradient portion 18 and the fitting between the press-fit portion 8 and the discharge portion 12 is released and the sealed state of the cartridge body 2 is released, the sliding portions 9a and 9b are steep. It is configured to move on the part 19. In other words, in this embodiment, when a force against the fitting force between the press-fitting portion 8 and the discharge portion 12 and the frictional force between the sliding portions 9a and 9b and the extrusion guide 13 is required, the sliding is required. The moving parts 9a and 9b move along the gentle gradient part 18, and when a force that resists only the frictional force between the sliding parts 9a and 9b and the extrusion guide 13 is required, the sliding parts 9a and 9b are steep. Move part 19. As described above, in this embodiment, the gradient of the inclined region 15 of the extrusion guide 13 is changed stepwise in consideration of changes in the fitting force, friction force, and the like generated between the cartridge body 2 and the ink stopper 3. Therefore, the force required to relatively rotate the two can be reduced. As a result, there is no need to tilt the ink cartridge 1 in order to remove the ink stopper 3, so that the possibility of unintentional leakage of ink can be further reduced.

In addition, since the ink plug 3 can be largely separated from the cartridge main body 2 by the steep slope portion 19 after the fitting state of the ink plug 3 and the cartridge main body 2 is released, a customer or the like can It is easy to judge whether or not the sealed state has been released.
That is, since the current relationship of the ink stopper 3 with respect to the cartridge body 2 is easy to see, the cartridge body 2 is turned upside down even though the cartridge body 2 and the ink stopper 3 are already disengaged. Thus, it is possible to reduce the possibility of ink leakage as much as possible.

  Further, in the present embodiment, the sliding portions 9a and 9b that have passed through the inclined region 15 can be placed on the high-level flat portion 27 that is the most protruding position in the push-out guide 13, so that the ink or the like can be supplied to consumers. It is possible to make sure that the stopper 3 has been detached from the cartridge main body 2, and after that, the ink stopper 3 and the cartridge main body 2 are released from the fitted state. And the cartridge main body 2 can be prevented from being fitted.

  In the present embodiment, in the cartridge main body 2, the ejection portion 12 and the extrusion guide 13 are separated from each other by a certain distance, and a gap 41 is formed between them, so that the press-fitting portion 8 of the ink plug 3 to and from the ejection portion 12 is inserted and removed. Can be made smooth. That is, the discharge part 12 has a structure that can be expanded when the press-fitting part 8 is inserted and removed.

Further, as described above, the ink cartridge 1 of the present embodiment is mounted on the predetermined applicator main body 50. Specifically, the cartridge body 2 from which the ink stopper 3 has been removed is mounted on the applicator body 50.
Therefore, the applicator main body 50 to which the cartridge main body 2 is mounted and the positional relationship of the cartridge main body 2 in the applicator main body 50 will be briefly described.

  The applicator main body 50 is a member obtained by removing the ink cartridge main body 2 from a whiteboard marker (marking pen) as an applicator. And this applicator main body 50 has the case body 51 and the cover member 52, as shown in FIG.

As shown in FIG. 16, the case body 51 has a main body cylinder 53 that forms an outer shell. In the main body cylinder 53, an ink path 55 through which ink flows and a mounting portion 56 in which the cartridge main body 2 is mounted Is provided (FIG. 17).
The ink path 55 is a flow path leading to the pen tip member 57 located on the front end side of the case body 51, and is formed by the batting 58 and the core 60 from the front end side. That is, the ink that has passed through the ink inlet 61 of the core 60 is supplied to the pen tip member 57 via the batting 58.

The mounting portion 56 is a space that is located on the rear end side of the ink path 55 in the case body 51, that is, on the rear end side of the core 60, and is open on one side. Specifically, the mounting portion 56 has an opening 62 in which the rear end surface of the case body 51 is opened, and the inside and outside of the space are communicated by the opening 62. That is, the cartridge main body 2 is inserted into the space through the opening 62 and attached. Further, the mounting portion 56 is provided with a distal end insertion opening 63 through which the distal end side of the cartridge main body 2 inserted into the space is inserted, and an engagement groove 65 for restricting the movement of the cartridge main body 2. That is, the cartridge main body 2 mounted on the mounting portion 56 is inserted into the front end insertion opening 63 and communicates with the ink introduction port 61 of the core 60 while the outer peripheral step portion 24 of the tank member 5 is engaged with the engagement groove. 65 is engaged and fixed at a predetermined position.
In order to prevent wasteful evaporation of the ink supplied to the nib member 57 in this way, the front end side of the case body 51 is covered with a lid member 52 serving as a cap. The lid member 52 is detachable as necessary.

  In the above-described embodiment, the configuration in which the extrusion guide 13 having a circular shape in plan view is formed using two sets of the single guide regions 17 is not limited to this, but the present invention is not limited thereto, and three or more sets of single guide regions are formed. A configuration in which an extrusion guide having a circular shape in plan view is formed may be used. For example, the extrusion guide 37 provided with three sets of single guide regions 70 having an arc opening angle x of 120 degrees shown in FIG. 18 and four single guide regions 71 having an arc opening angle x of 90 degrees shown in FIG. A configuration of an ink cartridge having a set of extrusion guides 38 is proposed. In addition, when this structure is employ | adopted, the ink stopper of the shape corresponding to each of the extrusion guides 37 and 38 is required.

  In the said embodiment, although the inclination area | region 15 of the extrusion guide 13 showed the structure formed by two area | regions where a gradient differs, this invention is not limited to this, An inclination area | region is comprised by three or more area | regions where a gradient differs. May be formed. Also in this case, as in the above-described embodiment, while the ink stopper is fitted to the cartridge body, the sliding portion moves on a gentle slope and the sliding portion is released after the fitting is released. It is preferable that the ink cartridge has a configuration such that the ink cartridge moves on a steep slope.

  In the above embodiment, the sliding portion 9 of the ink stopper 3 is shown as a ridge extending linearly in the axial direction of the cap body 7, but the present invention is not limited to this, as shown in FIG. The sliding portion 72 having a shape that can be fitted to the protruding top portion of the extrusion guide 13 may be used. More specifically, the sliding portion 72 has a shape that is substantially point-symmetric with the protruding top portion of the extrusion guide 13 in a state where the cartridge body is sealed with an ink stopper.

  In the above-described embodiment, the configuration in which the discharge portion 12 of the cartridge main body 2 protrudes outward has been shown. However, the present invention is not limited to this, and the discharge portion 73 has an internal space of the cartridge main body 2 as shown in FIG. It may be configured to protrude to the 20 side. In this case, in order to ensure the fitting of the press-fit portion 76 of the ink stopper 75 in the discharge portion 73, it is necessary to make the protruding length of the press-fit portion 76 longer than the above configuration.

  In the above-described embodiment, the configuration in which the ink plug 3 provided with the press-fit portion 8 that is press-fitted into the discharge portion 12 is used is shown. However, the present invention is not limited to this, and the ink plug without the press-fit portion is provided. It may be a configuration adopting As such an ink stopper, for example, as shown in FIG. 22, an ink stopper provided with an engagement ring 79 formed in a ring shape along the inner side surface of the cap side wall 46 of the cap body 78. 77. Further, when the ink stopper 77 is employed, it is necessary to provide a flange portion 81 that engages with the engagement ring 79 on the outer surface of the discharge portion 80. According to these configurations, as shown in FIG. 23, by engaging the engagement ring 79 and the flange portion 81, the inside of the cartridge main body can be maintained in a sealed state as in the above embodiment.

  In the above embodiment, ink is used as the coating liquid. However, in the present invention, any liquid coating liquid such as glue or correction liquid may be used.

1 Ink cartridge 2 Cartridge body 3, 75, 77 Ink stopper (blocking member)
5 Tank member 6 End forming member 7 Cap body 8, 76 Press-fit portion 9, 72 Sliding portion 12, 73 Discharge portion (application liquid discharge port)
13, 37, 38 Extrusion guide 15 Inclination region 16 Flat region 17, 70, 71 Single guide region 18 Slow gradient portion 19 Steep gradient portion 40 Connection portion 41 Gap 50 Applicator main body 79 Engagement ring 81 Flange portion α gradient β gradient

Claims (8)

A coating liquid cartridge comprising a cartridge body provided with a coating liquid discharge port, and a closing member capable of closing the coating liquid discharge port and sealing the inside of the cartridge body,
The cartridge body is provided with an extrusion guide protruding so as to surround the coating liquid discharge port, and the extrusion guide has an inclined region in which the protruding top portion is inclined upward along the surrounding direction,
The closing member is provided with a sliding portion that comes into contact with the extrusion guide,
When the sliding portion is moved along the upward slope of the inclined region of the extrusion guide, the sealed state of the cartridge main body by the closing member is released. A coating liquid cartridge comprising a cartridge body provided with a coating liquid discharge port, and a closing member capable of closing the coating liquid discharge port and sealing the inside of the cartridge body,
The cartridge body is provided with an extrusion guide extending so as to surround the coating liquid discharge port, and the extrusion guide has an inclined region in which the protruding top portion is inclined at different upward gradients along the surrounding direction,
The closing member is provided with a sliding portion that comes into contact with the extrusion guide,
When the sliding portion is moved along the upward slope of the inclined region of the extrusion guide, the sealed state of the cartridge main body by the closing member is released. 3. The coating liquid cartridge according to claim 2 , wherein the extrusion guide has a flat region continuously connected to the top of the inclined region. The coating liquid cartridge according to claim 2 , wherein the extrusion guide is provided at a position separated from the end of the opening forming part that forms the coating liquid discharge port by a certain distance or more. The closing member has a press-fitting portion that is press-fitted into the coating liquid discharge port,
The inclined region is composed of a gentle slope part with a predetermined upward slope arranged on the bottom side, and a steep slope part with a steep upward slope than the gentle slope part arranged on the top part side,
Press-fitting portion which is fitted to the coating solution discharge port, claim 2, characterized in that the sliding portion is the fitted state at a timing to shift to the steep portion of gentle slope portion is released The coating liquid cartridge according to 1. 6. The coating liquid cartridge according to claim 5 , wherein the gentle gradient portion has a gradient of 2 to 3 degrees, and the steep gradient portion has a gradient of 15 to 17 degrees. Closure member, by sliding unit moves along the gentle slope portion, according to claim 5 or 6, wherein the moving range of 1.2~1.4mm in the direction away from the cartridge body Coating liquid cartridge. 8. The coating liquid cartridge according to claim 2 , wherein the extrusion guide has a plurality of inclined areas on the same virtual circle.

Images