A knob-type ink cartridge

Abstract

This application discloses a knob-type ink cartridge, including a cartridge body for accommodating multiple ink cartridges. The cartridge body has an outlet adapted to the ink cartridges. A first blocking member adapted to the outlet is rotatably installed inside the cartridge body. A knob is installed on the outer wall of the cartridge body. The end of the first blocking member passes through the outer wall of the cartridge body and connects to the knob. The knob is subjected to force to drive the first blocking member to rotate. The first blocking member is used to rotate to open or close the outlet. The bottom wall of the cartridge body is inclined. The ink cartridges roll along the bottom wall to the outlet under the action of gravity. The outlet is opened or closed by controlling the rotation of the first blocking member by the knob. The operation is intuitive and has a certain degree of fun. By setting the bottom wall of the cartridge body to be inclined, the ink cartridges roll along the bottom wall to the outlet using their own weight, eliminating the complex power structure, resulting in lower production costs and higher reliability.

Description

Technical Field

[0001] This application relates to the field of stationery technology, and more specifically to a knob-type ink cartridge. Background Technology

[0002] An ink cartridge is a device used to store and manage ink cartridges for fountain pens. As a classic writing instrument, the fountain pen has evolved from dip pens to fountain pens to cartridge pens since its invention. Cartridge pens, due to their convenience and lack of frequent refilling, have gradually become the preferred writing tool for students, office workers, and calligraphy enthusiasts. However, traditional methods of storing and replacing ink cartridges have many inconveniences: simple ink cartridges are easily lost, and boxed packaging is bulky and inconvenient to carry; replacing ink cartridges requires manual operation, which easily soils hands, and improper operation may lead to ink leakage. As fountain pen users' demands for convenience and hygiene continue to increase, the market demand for a device that can easily store ink cartridges is growing, but traditional storage methods have failed to meet this need.

[0003] To address the aforementioned issues, Chinese utility model patent CN215603692U discloses an ink cartridge storage device for convenient replacement of fountain pen ink cartridges. The device includes: a cylindrical outer shell with its top surface fastened to the top of an annular sidewall, the annular sidewall and bottom surface being integrally formed; an ink cartridge replacement port on the top surface; a cylindrical ink cartridge carrier plate housed within the outer shell, coaxially arranged with the outer shell, and the diameter of the ink cartridge carrier plate being smaller than the diameter of the bottom surface; multiple ink cartridge slots evenly spaced along the circumference of the upper surface of the ink cartridge carrier plate, each slot accommodating one ink cartridge; an output shaft of a drive device coaxially arranged with the ink cartridge carrier plate and inserted into the bottom of the ink cartridge carrier plate; and a control device connected to the drive device, which, under the control of the control device, drives the output shaft to rotate by a set angle, aligning one ink cartridge slot with the ink cartridge replacement port. The current technical solution uses a cylindrical outer shell and a coaxially arranged ink cartridge holder to hold multiple ink cartridges. However, to achieve automatic ink cartridge replacement, the device employs a complex mechanical structure, including a drive unit, control unit, and protection unit. This not only increases the manufacturing cost but may also negatively impact the device's reliability and durability. Therefore, there is still a need for an ink cartridge holder that can not only hold multiple ink cartridges but also has a simple and reliable structure and offers a more engaging user experience. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a knob-type ink cartridge, which opens or closes the outlet by controlling the rotation of the first blocking member through a knob. The operation is intuitive and somewhat interesting. The bottom wall of the cartridge is set to be inclined, and the ink cartridge rolls to the outlet by its own weight. The complex power structure is eliminated, the production cost is lower and the reliability is higher.

[0005] This application provides a knob-type ink cartridge, including a cartridge body for accommodating multiple ink cartridges. The cartridge body has an outlet adapted to the ink cartridges. A first blocking member adapted to the outlet is rotatably installed inside the cartridge body. A knob is installed on the outer wall of the cartridge body. The end of the first blocking member passes through the outer wall of the cartridge body and is connected to the knob. The knob is subjected to force to drive the first blocking member to rotate. The first blocking member is used to rotate to open or close the outlet. The bottom wall of the cartridge body is inclined. The ink cartridges roll along the bottom wall to the outlet under the action of gravity.

[0006] In this technical solution, the cartridge housing is the main structure of the entire device, serving to store and protect the ink cartridges. An outlet is provided on the housing to allow the ink cartridges to detach from the housing. A first blocking component is rotatably mounted inside the housing, with a knob connected to one end. The knob, mounted on the outer wall of the housing, serves as the user interface. Rotation of the knob controls the rotation of the first blocking component. The bottom wall of the housing is inclined, utilizing the ink cartridges' own weight to roll along the bottom wall to the outlet. This cleverly utilizes gravity, reducing the need for additional power. When the outlet is open, the ink cartridge rolls along the inclined bottom wall to the outlet under gravity, facilitating user removal. When the outlet is closed, the first blocking component prevents the ink cartridges from accidentally sliding out of the outlet. It also provides a certain degree of sealing, preventing dust and other impurities from entering the cartridge. Users can control the removal of ink cartridges and the sealing of the cartridge simply by turning the knob. The operation is simple and intuitive, requiring no complex mechanical or electronic devices, thus lowering the barrier to entry and increasing the service life. Compared with some ink cartridge storage devices that require tools or complex assembly, this knob-type ink cartridge box requires no additional tools. Users can quickly remove ink cartridges anytime, anywhere, improving convenience. The knob operation adds a touch of fun and interactivity to the user experience. Compared with the traditional monotonous way of removing ink cartridges, this knob-type ink cartridge box can bring a sense of novelty to users, especially children or writing enthusiasts, making it more attractive.

[0007] As an improvement, a reset elastic element is fitted onto the first blocking member. The first blocking member is reset by rotating the reset elastic element to keep the outlet closed. In this technical solution, a reset elastic element, typically a spring or other component with elastic recovery function, is fitted onto the first blocking member. One end of the reset elastic element is connected to the first blocking member, and the other end is connected to the inner wall of the box. When the user drives the first blocking member to rotate by a knob to open the outlet, the reset elastic element is compressed or stretched, storing elastic potential energy. Once the user's operating force on the knob disappears, the reset elastic element releases the elastic potential energy, driving the first blocking member to automatically return to its initial position, thus closing the outlet. Through the action of the reset elastic element, the first blocking member can automatically reset and keep the outlet closed, without the need for manual operation by the user, improving the automation level and ease of use of the device.

[0008] As an improvement, the cartridge can accommodate at least two ink sacs, and the cartridge is provided with a second blocking member. An opening is formed between the second blocking member and the bottom wall of the cartridge, allowing only the bottom ink sac to pass through. The opening is located inside the outlet. In this technical solution, the height and internal layout of the cartridge allow for the stacking of multiple ink cartridges, enabling the cartridge to store more cartridges within a limited space, significantly increasing storage capacity and reducing the frequency of refilling. A second barrier is installed inside the cartridge to block ink cartridges except for the bottom layer. An opening is formed between the second barrier and the bottom wall of the cartridge, designed to allow only the bottom layer ink cartridges to pass through. Only the bottommost ink cartridge can reach the outlet through this opening, while the upper ink cartridges are blocked by the second barrier and cannot pass directly through the opening. When the user needs to remove an ink cartridge, they operate the knob to open the outlet using the first barrier. The bottom ink cartridge, under gravity, rolls through the opening between the second barrier and the bottom wall to the outlet for removal. The second barrier prevents the upper ink cartridges from rolling directly to the outlet, ensuring that only one bottom ink cartridge can be removed at a time. This avoids the chaos and blockage caused by multiple ink cartridges rolling simultaneously, improving ease of use.

[0009] As an improvement, the end of the first blocking member is provided with a connecting hole, and the knob is provided with a connecting shaft adapted to the connecting hole. The connecting shaft is connected to the connecting hole so that the knob and the first blocking member rotate synchronously. In this technical solution, the end of the first blocking member is provided with a connecting hole, and the knob is provided with a connecting shaft. The mechanical connection between the knob and the first blocking member is realized by inserting the connecting shaft into the connecting hole. Both the connecting shaft and the connecting hole can be set as irregular structures to enable the knob and the first blocking member to rotate synchronously. When the knob is rotated by the user, the connecting shaft drives the first blocking member to rotate synchronously, ensuring that the operation of the knob can be directly and effectively transmitted to the first blocking member, thereby realizing the opening or closing of the ink cartridge outlet, improving the reliability and response speed of operation. The function is realized through a simple mechanical connection, avoiding complex gear transmission or other intermediate transmission mechanisms. This not only simplifies the overall structure and reduces manufacturing costs, but also reduces the risk of failure caused by complex structures, thereby improving the stability and service life of the product.

[0010] As an improvement, the side wall of the housing is provided with a mounting hole, and the connecting shaft passes through the mounting hole and is inserted into the connecting hole; the outer periphery of the mounting hole is provided with a recessed groove adapted to the knob, and the knob is installed in the recessed groove. In this technical solution, the side wall of the housing is provided with a mounting hole, the position and size of which are adapted to the connecting shaft of the knob. The connecting shaft passes through the mounting hole and is inserted into the connecting hole of the first blocking member, thereby realizing the mechanical connection between the knob and the first blocking member, ensuring that the connection between the knob and the first blocking member is firm and reliable. A recessed groove is provided on the outer periphery of the mounting hole, the shape and size of which are adapted to the outer contour of the knob. The knob is installed in the recessed groove, so that the bottom of the knob is embedded in the housing, making the appearance of the entire device more compact and improving the user experience.

[0011] As an improvement, the first blocking component includes a rotating shaft and a baffle, which are integrally formed. In this technical solution, the first blocking component consists of a rotating shaft and a baffle. When the knob is operated, the rotating shaft drives the baffle to rotate synchronously, thereby changing the relative position of the baffle and the outlet, realizing the opening or closing of the outlet. The two are integrally formed, and the rotating shaft and the baffle are manufactured as a whole component without relative movement or connection points. Therefore, it reduces the loosening or wear problems caused by long-term use. The integrally formed structure ensures that there are no connection gaps or weak points between the rotating shaft and the baffle, thereby improving the overall strength and durability of the component. Furthermore, the integrally formed structure reduces the number of parts and eliminates the need for additional assembly steps.

[0012] As an improvement, the rotating shaft is provided with a clearance groove adapted to the ink cartridge, and the clearance groove has an arc-shaped structure. In this technical solution, the clearance groove is set on the rotating shaft, and its size and shape are adapted to the size and shape of the ink cartridge. The main function of the clearance groove is to provide clearance space for the ink cartridge during the rotation of the first blocking component, so as to avoid interference or collision between the ink cartridge and the rotating shaft. The arc-shaped clearance groove design can better fit the cylindrical surface of the ink cartridge, reduce the friction and resistance of the ink cartridge during the rolling process, make the ink cartridge more stable during the rolling process, reduce the instability of the device caused by the ink cartridge shaking or getting stuck, and make the ink cartridge easier to remove from the cartridge, thus improving the convenience of use.

[0013] As an improvement, the top of the cartridge is provided with a cover, which is rotatably connected to the top of the cartridge. In this technical solution, the cover is connected to the top of the cartridge by a rotatable connection. The cover can be rotated to open and close without separating from the cartridge. When the cover is rotated open, the ink cartridge inside the cartridge can be removed or inserted for replenishing the ink cartridge or cleaning the inside of the cartridge. When the cover is rotated back to its original position, the cartridge is sealed to prevent dust, moisture, and other impurities from entering, protecting the internal ink cartridge from the influence of the external environment. The operation of rotating the cover is intuitive and easy to understand, and users can use it proficiently without additional learning costs. On the other hand, a second blocking element can be provided on the cover.

[0014] As an improvement, the cover is provided with a protruding structure for applying force. This protruding structure, when subjected to force, drives the cover to rotate and open / close. In this technical solution, the protruding structure is located on the cover, and its main function is to provide the user with a point of force application, allowing the user to easily rotate the cover by applying force with their fingers. No additional tools or complicated operating procedures are required, enabling the user to quickly adapt to the product's usage and improving the user experience.

[0015] As an improvement, the ink cartridge is cylindrical. In this technical solution, the cylindrical ink cartridge has a regular and compact shape, which facilitates neat arrangement and storage in ink cartridge boxes or other containers, reducing storage space waste and allowing users to carry more ink cartridges. The cylindrical ink cartridge is compatible with most pen brands and models on the market, allowing users to easily find suitable ink cartridges without worrying about compatibility issues. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a knob-type ink cartridge according to this application.

[0017] Figure 2 This is a cross-sectional structural diagram of a knob-type ink cartridge according to this application.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the first blocking element and the knob in this application.

[0019] Figure 4 This is a three-dimensional structural diagram of the box and the first blocking member in this application.

[0020] The figure shows: 1. Box body; 11. Outlet; 12. Bottom wall; 13. Mounting hole; 14. Sink; 2. Ink sac; 3. First blocking element; 31. Connecting hole; 32. Rotating shaft; 321. Alternating groove; 33. Baffle; 4. Knob; 41. Connecting shaft; 5. Reset elastic element; 6. Second blocking element; 7. Cover; 71. Protruding structure. Detailed Implementation

[0021] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0022] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0023] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0024] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figures 1 to 4 As shown, this application discloses a knob-type ink cartridge, including a cartridge body 1 for accommodating multiple ink cartridges 2. The cartridge body 1 has an outlet 11 adapted to the ink cartridges 2. A first blocking member 3 adapted to the outlet 11 is rotatably installed inside the cartridge body 1. A knob 4 is installed on the outer wall of the cartridge body 1. The end of the first blocking member 3 passes through the outer wall of the cartridge body 1 and is connected to the knob 4. The knob 4 is subjected to force to drive the first blocking member 3 to rotate. The first blocking member 3 is used to rotate to open or close the outlet 11. The bottom wall 12 of the cartridge body 1 is inclined. Under the action of gravity, the ink cartridges 2 roll along the bottom wall 12 to the outlet 11. The housing 1 is the main structure of the entire device, serving to store and protect the ink sac 2. An outlet 11 is provided on the housing 1, which is used to allow the ink sac 2 to detach from the housing 1. The first blocking member 3 is rotatably installed inside the housing 1, and one end of it is connected to a knob 4. The knob 4 is installed on the outer wall of the housing 1 and serves as the user's operating interface. The rotation of the knob 4 controls the rotation of the first blocking member 3. The bottom wall 12 of the housing 1 is inclined, and the ink sac 2 rolls along the bottom wall 12 to the outlet 11 using its own weight. This cleverly utilizes gravity and reduces the need for additional power.

[0026] When outlet 11 is opened, ink cartridge 2 rolls along the inclined bottom wall 12 to outlet 11 under the action of gravity, making it convenient for users to remove ink cartridge 2. When outlet 11 is closed, the first blocking member 3 acts as a barrier to prevent ink cartridge 2 from accidentally sliding out of outlet 11. It also provides a certain degree of sealing to prevent dust and other impurities from entering the box 1. Users can control the removal of ink cartridge 2 and the sealing of box 1 simply by turning knob 4. The operation is simple and intuitive, without the need for complicated mechanical or electronic devices, which lowers the barrier to entry and increases the service life. Compared with some ink cartridge 2 storage devices that require tools or complicated assembly, this knob-type ink cartridge box does not require any additional tools. Users can quickly remove ink cartridge 2 anytime and anywhere, improving the convenience of use. The operation of knob 4 brings a certain degree of fun and interactivity to users. Compared with the traditional monotonous way of removing ink cartridge 2, this knob-type ink cartridge box can bring a sense of novelty to users, especially for children or writing enthusiasts, which is more attractive.

[0027] More specifically, such as Figure 3 As shown, a reset elastic element 5 is fitted onto the first blocking member 3. The first blocking member 3 is reset by rotating the reset elastic element 5 to keep the outlet 11 closed. The reset elastic element 5, typically a spring or other component with elastic recovery function, is fitted onto the first blocking member 3. One end of the reset elastic element 5 is connected to the first blocking member 3, and the other end is connected to the inner wall of the box 1. When the user drives the first blocking member 3 to rotate through the knob 4 to open the outlet 11, the reset elastic element 5 is compressed or stretched, storing elastic potential energy. Once the user's operating force on the knob 4 disappears, the reset elastic element 5 releases the elastic potential energy, driving the first blocking member 3 to automatically return to its initial position, thus closing the outlet 11. Through the action of the reset elastic element 5, the first blocking member 3 can automatically reset and keep the outlet 11 closed, without the need for manual operation by the user, thus improving the automation level and ease of use of the device.

[0028] More specifically, such as Figure 2As shown, the cartridge 1 can accommodate at least two layers of ink cartridges 2. A second blocking member 6 is provided inside the cartridge 1. An opening, allowing only the bottom ink cartridge 2 to pass through, is formed between the second blocking member 6 and the bottom wall 12 of the cartridge 1. The opening is located inside the outlet 11. The height and internal layout of the cartridge 1 support the stacking of multiple layers of ink cartridges 2. The cartridge 1 can store more ink cartridges 2 in a limited space, significantly increasing storage capacity and reducing the frequency of users refilling ink cartridges 2. The second blocking member 6 inside the cartridge 1 blocks ink cartridges 2 except for the bottom layer. An opening is formed between the second blocking member 6 and the bottom wall 12 of the cartridge 1. The size and shape of this opening are designed... To allow only the bottom ink sac 2 to pass through, only the bottommost ink sac 2 can reach the outlet 11 through this opening, while the upper ink sac 2 is blocked by the second blocking member 6 and cannot pass directly through the opening. When the user needs to remove the ink sac 2, the first blocking member 3 is operated by the knob 4 to open the outlet 11. Under the action of gravity, the bottom ink sac 2 rolls through the opening between the second blocking member 6 and the bottom wall 12 to the outlet 11 for the user to remove. The function of the second blocking member 6 is to prevent the upper ink sac 2 from rolling directly to the outlet 11, ensuring that only one bottom ink sac 2 can be removed at a time, avoiding the chaos and blockage caused by multiple ink sacs 2 rolling at the same time, and improving the convenience of use.

[0029] More specifically, such as Figure 3 As shown, the end of the first blocking member 3 is provided with a connecting hole 31, and the knob 4 is provided with a connecting shaft 41 adapted to the connecting hole 31. The connecting shaft 41 is connected to the connecting hole 31 so that the knob 4 and the first blocking member 3 can rotate synchronously. The end of the first blocking member 3 is provided with a connecting hole 31, and the knob 4 is provided with a connecting shaft 41. The mechanical connection between the knob 4 and the first blocking member 3 is realized by inserting the connecting shaft 41 into the connecting hole 31. Both the connecting shaft 41 and the connecting hole 31 can be set to irregular structures so that the knob 4 and the first blocking member 3 can rotate synchronously. When the knob 4 is rotated by the user, the connecting shaft 41 drives the first blocking member 3 to rotate synchronously, ensuring that the operation of the knob 4 can be directly and effectively transmitted to the first blocking member 3, thereby realizing the opening or closing of the ink cartridge outlet 11, improving the reliability and response speed of operation. The function is realized through a simple mechanical connection, avoiding complex gear transmission or other intermediate transmission mechanisms. This not only simplifies the overall structure and reduces manufacturing costs, but also reduces the risk of failure caused by complex structures, thereby improving the stability and service life of the product.

[0030] More specifically, such as Figure 4As shown, the side wall of the box 1 is provided with a mounting hole 13. The connecting shaft 41 passes through the mounting hole 13 and is inserted into the connecting hole 31. The outer periphery of the mounting hole 13 is provided with a recess 14 that matches the knob 4. The knob 4 is installed in the recess 14. The side wall of the box 1 is provided with a mounting hole 13, the position and size of which match the connecting shaft 41 of the knob 4. The connecting shaft 41 passes through the mounting hole 13 and is inserted into the connecting hole 31 of the first blocking member 3, thereby realizing the mechanical connection between the knob 4 and the first blocking member 3, ensuring that the connection between the knob 4 and the first blocking member 3 is firm and reliable. The recess 14 is provided on the outer periphery of the mounting hole 13. The shape and size of the recess 14 match the outer contour of the knob 4. The knob 4 is installed in the recess 14, so that the bottom of the knob 4 is embedded in the box 1, making the appearance of the whole device more compact and improving the user experience.

[0031] More specifically, such as Figure 2 and Figure 3 As shown, the first blocking component 3 includes a rotating shaft 32 and a baffle 33. The rotating shaft 32 and the baffle 33 are integrally formed. The first blocking component 3 is composed of the rotating shaft 32 and the baffle 33. When the knob 4 is operated, the rotating shaft 32 drives the baffle 33 to rotate synchronously, thereby changing the relative position of the baffle 33 and the outlet 11, realizing the opening or closing of the outlet 11. The two are integrally formed. The rotating shaft 32 and the baffle 33 are manufactured as a whole component during the manufacturing process. There is no relative movement or connection point. Therefore, the loosening or wear problems caused by long-term use are reduced. The integrally formed structure makes there no connection gap or weak link between the rotating shaft 32 and the baffle 33, thereby improving the overall strength and durability of the component. Moreover, the integrally formed structure reduces the number of parts and eliminates the need for additional assembly steps.

[0032] More specifically, such as Figure 2 and Figure 3 As shown, the rotating shaft 32 is provided with a clearance groove 321 adapted to the ink sac 2. The clearance groove 321 has an arc-shaped structure and is set on the rotating shaft 32. Its size and shape are adapted to the size and shape of the ink sac 2. The main function of the clearance groove 321 is to provide clearance space for the ink sac 2 during the rotation of the first blocking member 3, so as to avoid interference or collision between the ink sac 2 and the rotating shaft 32. The arc-shaped clearance groove 321 can better fit the cylindrical surface of the ink sac 2, reduce the friction and resistance of the ink sac 2 during the rolling process, make the ink sac 2 more stable during the rolling process, reduce the instability of the device caused by the shaking or jamming of the ink sac 2, and make the ink sac 2 more smoothly removed from the cartridge 1, improving the convenience of use.

[0033] More specifically, such as Figure 1 and Figure 2As shown, the top of the cartridge 1 is provided with a cover 7, which is rotatably connected to the top of the cartridge 1. The cover 7 is connected to the top of the cartridge 1 by a rotatable connection, and the cover 7 can be rotated to open and close without separating from the cartridge 1. When the cover 7 is rotated open, the ink sac 2 inside the cartridge 1 can be taken out or put in for replenishing the ink sac 2 or cleaning the inside of the cartridge 1. When the cover 7 is rotated back to its original position, the cartridge 1 is sealed to prevent dust, moisture and other impurities from entering, and to protect the ink sac 2 inside from the influence of the external environment. The operation of rotating the cover 7 is intuitive and easy to understand, and users can use it proficiently without additional learning costs.

[0034] More specifically, such as Figure 1 As shown, the cover 7 is provided with a protruding structure 71 for applying force. The protruding structure 71 is subjected to force to drive the cover 7 to rotate and open and close. The protruding structure 71 is provided on the cover 7, and its main function is to provide a force application point for the user, so that the user can apply force with their fingers to drive the cover 7 to rotate without the need for additional tools or complicated operation steps. The user can quickly adapt to the way the product is used, which improves the user experience.

[0035] More specifically, such as Figure 2 As shown, the ink cartridge 2 is cylindrical. The cylindrical ink cartridge 2 has a regular and compact shape, which makes it easy to arrange and store neatly in ink cartridge boxes or other containers, reducing the waste of storage space and allowing users to carry more ink cartridges 2. The cylindrical ink cartridge 2 is compatible with most pen brands and models on the market, so users can easily find a suitable ink cartridge 2 without worrying about compatibility issues.

[0036] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A knob-type ink cartridge, characterized in that, The device includes a housing (1) for accommodating multiple ink cartridges (2). The housing (1) has an outlet (11) adapted to the ink cartridges (2). A first blocking member (3) adapted to the outlet (11) is rotatably installed inside the housing (1). A knob (4) is installed on the outer wall of the housing (1). The end of the first blocking member (3) passes through the outer wall of the housing (1) and is connected to the knob (4). The knob (4) is subjected to force to drive the first blocking member (3) to rotate. The first blocking member (3) is used to rotate to open or close the outlet (11). The bottom wall (12) of the housing (1) is inclined. The ink cartridges (2) roll along the bottom wall (12) to the outlet (11) under the action of gravity.

2. A knob-type ink cartridge according to claim 1, characterized in that, The first blocking member (3) is fitted with a reset elastic member (5). The first blocking member (3) is reset by rotating the reset elastic member (5) so that the outlet (11) remains closed.

3. A knob-type ink cartridge according to claim 1, characterized in that, The box body (1) can accommodate at least two ink sacs (2). The box body (1) is provided with a second blocking member (6). An opening is formed between the second blocking member (6) and the bottom wall (12) of the box body (1) for only the bottom ink sac (2) to pass through. The opening is located inside the outlet (11).

4. A knob-type ink cartridge according to claim 1, characterized in that, The first blocking member (3) has a connecting hole (31) at its end, and the knob (4) has a connecting shaft (41) adapted to the connecting hole (31). The connecting shaft (41) is connected to the connecting hole (31) so that the knob (4) and the first blocking member (3) rotate synchronously.

5. A knob-type ink cartridge according to claim 4, characterized in that, The side wall of the box (1) is provided with a mounting hole (13), and the connecting shaft (41) passes through the mounting hole (13) and is inserted into the connecting hole (31); the outer periphery of the mounting hole (13) is provided with a groove (14) that is compatible with the knob (4), and the knob (4) is installed in the groove (14).

6. A knob-type ink cartridge according to claim 1, characterized in that, The first blocking member (3) includes a rotating shaft (32) and a baffle (33), wherein the rotating shaft (32) and the baffle (33) are integrally formed.

7. A knob-type ink cartridge according to claim 6, characterized in that, The rotating shaft (32) is provided with a relief groove (321) adapted to the ink sac (2), and the relief groove (321) has an arc-shaped structure.

8. A knob-type ink cartridge according to claim 1, characterized in that, The box body (1) is provided with a cover (7) on the top, and the cover (7) is rotatably connected to the top of the box body (1).

9. A knob-type ink cartridge according to claim 8, characterized in that, The cover (7) is provided with a protruding structure (71) for applying force. The protruding structure (71) is subjected to force to drive the cover (7) to rotate and open / close.

10. A knob-type ink cartridge according to claim 1, characterized in that, The ink sac (2) is cylindrical.

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