Electronic cigarette with anti-reverse installation structure cartridge

Abstract

This application provides an electronic cigarette with an anti-reverse-installation cartridge, comprising: an anti-misplacement groove at the bottom of the cartridge, an upper first electrode, and an upper second electrode; a main unit including a lower first electrode corresponding to the position of the upper first electrode, a lower second electrode corresponding to the position of the upper second electrode, an anti-misplacement protrusion corresponding to the position of the anti-misplacement groove, and a vibrating element installed inside the main unit; the central axis between the lower first electrode and the lower second electrode and the anti-misplacement protrusion are located on both sides of the central axis of the main unit; after the cartridge is inserted into the upper part of the main unit, the anti-misplacement protrusion is inserted into the anti-misplacement groove, the lower first electrode is connected to the upper first electrode to achieve electrical conduction, the lower second electrode is connected to the upper second electrode to achieve electrical conduction, and the vibrating element vibrates. The technical solution provided by this application effectively prevents the cartridge from being installed backwards through the anti-misplacement protrusion and groove and the vibration reminder of the vibrating element.

Description

Technical Field

[0001] This application belongs to the field of electronic atomization device technology, and more specifically, relates to an electronic cigarette with a cartridge having an anti-reverse mounting structure. Background Technology

[0002] Electronic cigarettes typically consist of a cartridge and a main unit. The cartridge usually includes a cartridge shell and an atomizer core inside the shell, with an e-liquid reservoir within. The main unit includes a battery and a control board. When the cartridge and main unit are connected, the electrodes on the cartridge and the main unit make contact to achieve electrical connection, causing the atomizer core, electrically connected to the electrodes, to generate heat, which in turn heats the e-liquid to create vapor for inhalation. However, in some current electronic cigarette designs, the electrodes are biased to one side, which often leads to the cartridge and main unit being installed incorrectly. This results in the electrodes not properly connecting, rendering the electronic cigarette unusable and causing inconvenience for the user. Utility Model Content

[0003] The purpose of this application is to provide an electronic cigarette with a cartridge having an anti-reverse mounting structure, so as to solve the above-mentioned technical problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide an electronic cigarette with an anti-reverse-mounting structure cartridge, characterized in that it comprises:

[0005] The cartridge includes an upper first electrode, an upper second electrode, and a foolproof groove; the bottom of the cartridge also has a foolproof groove, an upper first electrode, and an upper second electrode; and...

[0006] The main unit includes a lower first electrode corresponding to the position of the upper first electrode, a lower second electrode corresponding to the position of the upper second electrode, a foolproof protrusion corresponding to the position of the foolproof groove, and a vibrating element installed inside the main unit; the central axis between the lower first electrode and the lower second electrode and the foolproof protrusion are located on both sides of the central axis of the main unit.

[0007] When the cartridge is inserted into the upper part of the main unit, the anti-foolproof protrusion is inserted into the anti-foolproof groove, the lower first electrode is connected to the upper first electrode to achieve electrical conduction, the lower second electrode is connected to the upper second electrode to achieve electrical conduction, and the vibrating component vibrates.

[0008] Optionally, the cartridge also includes a cartridge shell and a cartridge bottom cover. The cartridge shell is hollow with a lower opening, and the cartridge bottom cover is spliced ​​with the cartridge shell vertically, with the cartridge bottom cover covering the lower opening of the cartridge shell.

[0009] The anti-foolproof groove is located on the lower surface of the cartridge bottom cover, and the upper first electrode and the upper second electrode are installed alternately on the cartridge bottom cover.

[0010] Optionally, the main unit also includes a hollow main unit housing with an upper opening and an inner mounting bracket built into the main unit housing. The upper part of the inner wall of the main unit housing and the top of the mounting bracket form an upper opening mounting groove, and the tobacco cartridge is detachably connected to the main unit by being inserted into the mounting groove.

[0011] The anti-foolproof protrusion protrudes upward from the top end face of the mounting inner frame, and the lower first electrode and the lower second electrode are installed alternately on the upper end of the inner frame.

[0012] Optionally, the anti-mistake groove is a circular groove, and the anti-mistake protrusion is cylindrical.

[0013] Optionally, there is a gap between the top of the anti-mistake protrusion and the bottom surface of the anti-mistake groove; there is a gap between the outer side of the anti-mistake protrusion and the inner sidewall of the anti-mistake groove.

[0014] Optionally, the cartridge also includes an upwardly protruding mouthpiece, the central axis of which is located beside the central axis of the cartridge and the main unit, and the distance between the central axis of the lower first electrode and the lower second electrode and the central axis of the mouthpiece is greater than the distance between the central axis of the anti-foolproof groove and the central axis of the mouthpiece.

[0015] Optionally, the upper first electrode and the lower first electrode are both located on one side of the central axis of the cartridge and the main unit, and the upper second electrode and the lower second electrode are both located on the other side of the central axis of the cartridge and the main unit.

[0016] Both the lower first electrode and the lower second electrode are embedded in the mounting frame at the lower end and protrude upwards from the upper end of the mounting frame at the upper end.

[0017] Optionally, the main unit also includes an electronic control board and a battery, with the lower first electrode, the lower second electrode, the battery, and the vibrating element all electrically connected to the electronic control board.

[0018] Optionally, the vibrating element is located at the lower part of the main unit, and a receiving groove is provided at the lower end of the mounting inner frame, in which the vibrating element is received.

[0019] Optionally, the e-cigarette with an anti-reverse-installation structure cartridge also includes a first magnet and a second magnet. The first magnet is located on the bottom cover of the cartridge, and the second magnet is located at the upper end of the mounting bracket. After the cartridge is inserted into the mounting slot, it is magnetically fixed to the main unit by the mutual attraction between the first magnet and the second magnet.

[0020] The beneficial effects of the electronic cigarette with an anti-reverse-installation structure provided in this application are as follows: Because an anti-misplacement groove is provided at the bottom of the cartridge, and an anti-misplacement protrusion corresponding to the groove is provided on the main unit, when the cartridge is connected to the main unit in the correct direction, the anti-misplacement protrusion will insert into the anti-misplacement groove to achieve a proper fit. The upper first electrode and upper second electrode of the cartridge can be aligned and connected with the lower first electrode and lower second electrode of the main unit, respectively. After connection, the vibrator will vibrate, strengthening the positive feedback. If the cartridge is connected to the main unit in the reverse direction, the anti-misplacement protrusion on the main unit will push the cartridge upwards, causing it to tilt, thus preventing the two electrodes of the cartridge from connecting with the two electrodes of the main unit. The vibrator will then provide no vibration feedback, thus reminding the user that the cartridge is installed incorrectly. As can be seen from the above, in the technical solution of this application, the physical structure of the anti-misplacement groove and protrusion, along with the vibration reminder from the vibrator, effectively prevents the cartridge from being installed incorrectly, improving user convenience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of an electronic cigarette with an anti-reverse-mounting cartridge provided in an embodiment of this application;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 A cross-sectional view of an electronic cigarette with an anti-reverse-mounting cartridge provided in an embodiment of this application when the cartridge and the main unit are separated.

[0026] Figure 5 A schematic diagram of the electronic cigarette with an anti-reverse mounting structure cartridge provided in this application embodiment, when the cartridge and the main unit are separated at an angle;

[0027] Figure 6 This is a schematic diagram of the electronic cigarette with an anti-reverse mounting structure cartridge provided in this application embodiment when the cartridge and the main unit are separated, from another angle.

[0028] Explanation of icon numbers:

[0029] 100 smoke cartridges 200 host 110 cartridge casing 120 The bottom cap of the e-cigarette cartridge 130 Upper first electrode 140 Upper second electrode 150 Anti-foolproof groove 210 Main unit casing 220 Install internal frame 230 Mounting slot 240 Lower first electrode 250 Lower second electrode 260 Fool-proof convex part 270 Vibrating components 160 Suction nozzle 221 Container slot 310 First magnet 320 Second magnet Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of this application are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0037] This application provides an electronic cigarette with a cartridge having an anti-reverse mounting structure.

[0038] Please see Figures 1 to 6 In one embodiment, the electronic cigarette with the anti-reverse-mounting structure cartridge 100 includes a cartridge 100 and a main unit 200. Specifically, the cartridge 100 includes an upper first electrode 130, an upper second electrode 140, and an anti-foolproof groove 150. The bottom of the cartridge 100 is provided with the anti-foolproof groove 150, the upper first electrode 130, and the upper second electrode 140. The main unit 200 includes a lower first electrode 240 corresponding to the position of the upper first electrode 130, a lower second electrode 250 corresponding to the position of the upper second electrode 140, a foolproof protrusion 260 corresponding to the position of the foolproof groove 150, and a vibrating element 270 installed inside the main unit 200. The central axis between the lower first electrode 240 and the lower second electrode 250 and the foolproof protrusion 260 are respectively located on both sides of the central axis of the main unit 200. That is, the overall position of the electrode assembly composed of the lower first electrode 240, the lower second electrode 250 and the upper first electrode 130 and the upper second electrode 140 corresponding to their positions is biased to one side, and the overall position of the foolproof structure composed of the foolproof groove 150 and the foolproof protrusion 260 is biased to the other side. There is a large gap between the electrode assembly and the foolproof structure, thereby playing a better role in preventing reverse installation and positioning. When the cartridge 100 is inserted into the upper part of the main unit 200, the anti-foolproof protrusion 260 is inserted into the anti-foolproof groove 150, the lower first electrode 240 is connected to the upper first electrode 130 to achieve electrical conduction, the lower second electrode 250 is connected to the upper second electrode 140 to achieve electrical conduction, and the vibrating element 270 vibrates.

[0039] Based on this design, in this embodiment, since the bottom of the cartridge 100 is provided with a foolproof groove 150 and the main unit 200 is provided with a foolproof protrusion 260 corresponding to the position of the foolproof groove 150, when the cartridge 100 is connected to the main unit 200 in the correct direction, the foolproof protrusion 260 will be inserted into the foolproof groove 150 to achieve a fit. The upper first electrode 130 and the upper second electrode 140 of the cartridge 100 can be aligned and connected with the lower first electrode 240 and the lower second electrode 250 of the main unit 200, respectively. After connection, the vibrator 270 will start vibrating to enhance positive feedback. If the cartridge 100 is connected to the main unit 200 in the opposite direction, the foolproof protrusion on the main unit 200 will push the cartridge 100 up, causing it to tilt, so that the two electrodes of the cartridge 100 cannot be connected with the two electrodes of the main unit 200, the vibrator 270 will not provide vibration feedback, and thus remind the user that the cartridge 100 is installed backwards. As can be seen from the above, in the technical solution of this application, the physical structure of the anti-mistake groove 150 and the anti-mistake protrusion 260, as well as the vibration reminder of the vibrating element 270, can effectively prevent the cigarette cartridge 100 from being installed backwards, thereby improving the convenience of user use.

[0040] Please see Figure 1 , Figure 2 as well as Figures 4 to 5 In this embodiment, the cartridge 100 also includes a cartridge shell 110 and a cartridge bottom cover 120. The cartridge shell 110 is hollow with a lower opening, and the cartridge bottom cover 120 is joined vertically to the cartridge shell 110, with the bottom cover 120 covering the lower opening of the cartridge shell 110. A foolproof groove 150 is provided on the lower surface of the cartridge bottom cover 120, and the upper first electrode 130 and the upper second electrode 140 are spaced apart and mounted on the cartridge bottom cover 120. Specifically, the foolproof groove 150 is integrally formed during the injection molding of the cartridge bottom cover 120. The cartridge bottom cover 120 also has mounting positions for the upper first electrode 130 and the upper second electrode 140. During actual assembly, the upper first electrode 130 and the upper second electrode 140 can be directly inserted into the mounting positions to achieve electrical connection with the positive and negative terminals of the atomizing core. Here, the bottom surfaces of the upper first electrode 130 and the upper second electrode 140 are flush with the bottom surface of the cartridge bottom cover 120 to improve the convenience of assembling the cartridge 100 and the main unit 200.

[0041] Please see Figure 1 , Figure 2 , Figure 4 and Figure 6In this embodiment, the main unit 200 further includes a hollow, open-top main unit housing 210 and a mounting inner frame 220 built into the main unit housing 210. The upper part of the inner wall of the main unit housing 210 and the top of the mounting frame form an open-top mounting groove 230. The tobacco cartridge 100 is detachably connected to the main unit 200 by being inserted into the mounting groove 230. A foolproof protrusion 260 protrudes upward from the top end face of the mounting inner frame 220. The lower first electrode 240 and the lower second electrode 250 are spaced apart and mounted on the upper end of the inner frame. It can be understood that the mounting groove 230 on the upper part of the main unit 200 allows the tobacco cartridge 100 to be more securely connected to the main unit 200. The anti-foolproof protrusion 260 is integrally formed by injection molding the mounting inner frame 220. The upper ends of the lower first electrode 240 and the lower second electrode 250 pass through the top of the mounting inner frame 220 and protrude upwards from its top end face. After the tobacco cartridge 100 is inserted into the mounting groove 230, the protruding upper ends of the lower first electrode 240 and the lower second electrode 250 respectively contact the bottom surfaces of the upper first electrode 130 and the upper second electrode 140, thereby achieving conductive connection between the two.

[0042] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 In this embodiment, the anti-misalignment groove 150 is a circular groove, and the anti-misalignment protrusion 260 is cylindrical. However, this design is not limited to this; the anti-misalignment groove 150 and the anti-misalignment protrusion 260 can also be configured in other shapes, as long as they can be matched and aligned. However, in this embodiment, the circular groove and cylindrical shape make it easier for the anti-misalignment groove 150 and the anti-misalignment protrusion 260 to be aligned successfully, thereby further improving assembly convenience.

[0043] Furthermore, such as Figure 2 As shown, there is a gap between the top of the anti-misalignment protrusion 260 and the bottom surface of the anti-misalignment groove 150; there is also a gap between the outer side of the anti-misalignment protrusion 260 and the inner sidewall of the anti-misalignment groove 150. It can be understood that the design of these gaps effectively reduces the resistance when the anti-misalignment protrusion 260 is inserted into the anti-misalignment groove 150, making the alignment and assembly between the two more convenient.

[0044] Please see Figure 1 and Figure 4In this embodiment, the cartridge 100 also includes an upwardly protruding mouthpiece 160. The central axis of the mouthpiece 160 is located beside the central axis of the cartridge 100 and the main unit 200, and the distance between the central axis of the lower first electrode 240 and the lower second electrode 250 and the central axis of the mouthpiece 160 is greater than the distance between the central axis of the anti-foolproof groove 150 and the central axis of the mouthpiece 160. The positions of the upper first electrode 130 and the upper second electrode 140 are also correspondingly positioned. In other words, in this embodiment, since the electrode assembly is connected to components such as the atomizing core, the position of the electrode assembly is preferentially biased towards the side closer to the mouthpiece 160 to facilitate the setting and connection of related components. Correspondingly, the anti-foolproof structure is biased towards the side away from the mouthpiece 160.

[0045] Furthermore, in this embodiment, the upper first electrode 130 and the lower first electrode 240 are both located on one side of the central axis of the cartridge 100 and the main unit 200, while the upper second electrode 140 and the lower second electrode 250 are both located on the other side of the central axis of the cartridge 100 and the main unit 200. The lower first electrode 240 and the lower second electrode 250 are both positioned with their lower ends embedded in the mounting bracket 220 and their upper ends protruding upwards from the upper end of the mounting bracket 220. This positioning ensures that the overall position of the electrode assembly does not deviate excessively from the central axis of the electronic cigarette, thus facilitating the installation and connection of other related components.

[0046] Furthermore, in this embodiment, the main unit 200 also includes an electronic control board and a battery. The lower first electrode 240, the lower second electrode 250, the battery, and the vibrator 270 are all electrically connected to the electronic control board. Here, the battery provides electrical energy, and the electronic control board is equipped with various related electrical components and circuits to control and achieve different functions. When the upper first electrode 130 and the lower first electrode 240 are electrically connected, and the upper second electrode 140 and the lower second electrode 250 are electrically connected, the electrical energy from the battery can be transmitted to the lower first electrode 240 and the lower second electrode 250 through the related devices and circuits on the electronic control board, and then transmitted to the atomizing core through the connected upper first electrode 130 and the upper second electrode 140 to achieve the electric heating of the atomizing core. At the same time, the connection signal is also transmitted to the electronic control board, enabling the electronic control board to control the vibrator 270 to start vibrating.

[0047] Please see Figure 1 , Figure 3 and Figure 4In this embodiment, the vibrating element 270 is located at the lower part of the main unit 200, and the lower end of the mounting inner frame 220 is provided with a receiving groove 221, in which the vibrating element 270 is housed. Here, the vibrating element 270 is specifically a small motor; however, in other embodiments, it could be any other component that can controllably vibrate after electrical conduction. It is understood that the placement of the vibrating element 270 at the lower part of the main unit 200 avoids interference with other components and also facilitates the use of bottom space for functional settings, without significantly increasing the size of the electronic cigarette, and making the bottom vibration more easily perceived by the user.

[0048] Please see Figure 1 , Figure 2 , Figures 4 to 6 In this embodiment, the electronic cigarette with the anti-reverse-installation structure cartridge 100 also includes a first magnet 310 and a second magnet 320. The first magnet 310 is located on the cartridge bottom cover 120, and the second magnet 320 is located on the upper end of the mounting inner frame 220. After the cartridge 100 is inserted into the mounting slot 230, it is magnetically fixed to the main unit 200 by the mutual attraction of the first magnet 310 and the second magnet 320. Of course, in other embodiments, the cartridge 100 and the main unit 200 can be connected in other ways, but the magnetic connection method in this embodiment is more convenient. Specifically, there are two first magnets 310 on the cartridge bottom cover 120, located on the left and right sides respectively; correspondingly, there are also two second magnets 320 on the upper end of the mounting inner frame 220, also located on the left and right sides. In this way, when the cartridge 100 is connected to the main unit 200, the magnetic attraction force is more evenly distributed, and the magnetic connection is more stable.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electronic cigarette having a cartridge with an anti-inverted structure, characterized in that, include: The cartridge includes an upper first electrode, an upper second electrode, and a foolproof groove. The bottom of the cartridge is provided with the foolproof groove, the upper first electrode, and the upper second electrode. as well as, The main unit includes a lower first electrode corresponding to the position of the upper first electrode, a lower second electrode corresponding to the position of the upper second electrode, a foolproof protrusion corresponding to the position of the foolproof groove, and a vibrating element installed inside the main unit; the central axis between the lower first electrode and the lower second electrode and the foolproof protrusion are located on both sides of the central axis of the main unit; When the cartridge is inserted into the upper part of the main unit, the anti-foolproof protrusion is inserted into the anti-foolproof groove, the lower first electrode is connected to the upper first electrode to achieve electrical conduction, the lower second electrode is connected to the upper second electrode to achieve electrical conduction, and the vibrating element vibrates.

2. The electronic cigarette having a reverse assembly preventing structure cartridge according to claim 1, wherein The cartridge also includes a cartridge shell and a cartridge bottom cover. The cartridge shell is hollow with a bottom opening. The cartridge bottom cover is spliced ​​to the cartridge shell vertically, and the cartridge bottom cover covers the bottom opening of the cartridge shell. The anti-foolproof groove is provided on the lower surface of the cartridge bottom cover, and the upper first electrode and the upper second electrode are installed alternately on the cartridge bottom cover.

3. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 2, characterized in that, The main unit also includes a hollow main unit housing with an upper opening and an inner mounting bracket built into the main unit housing. The upper part of the inner wall of the main unit housing and the top of the mounting bracket form an upper-opening mounting groove. The tobacco cartridge is detachably connected to the main unit by being inserted into the mounting groove. The anti-foolproof protrusion protrudes upward from the top end face of the mounting inner frame, and the lower first electrode and the lower second electrode are installed alternately on the upper end of the inner support.

4. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 2, characterized in that, The anti-mistake groove is a circular groove, and the anti-mistake protrusion is cylindrical.

5. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 4, characterized in that, There is a gap between the top of the anti-mistake protrusion and the bottom surface of the anti-mistake groove; there is a gap between the outer side of the anti-mistake protrusion and the inner sidewall of the anti-mistake groove.

6. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 3, characterized in that, The cartridge also includes an upwardly protruding mouthpiece, the central axis of which is located beside the central axis of the cartridge and the main unit, and the distance between the central axis of the lower first electrode and the lower second electrode and the central axis of the mouthpiece is greater than the distance between the central axis of the anti-foolproof groove and the central axis of the mouthpiece.

7. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 3, characterized in that, The upper first electrode and the lower first electrode are both located on one side of the central axis of the cartridge and the main unit, and the upper second electrode and the lower second electrode are both located on the other side of the central axis of the cartridge and the main unit. Both the lower first electrode and the lower second electrode are embedded at their lower ends into the mounting frame, and protrude upwards from the upper end of the mounting frame.

8. The electronic cigarette with an anti-reverse-mounting cartridge as described in any one of claims 3 to 7, characterized in that, The main unit also includes an electronic control board and a battery. The lower first electrode, the lower second electrode, the battery, and the vibrating element are all electrically connected to the electronic control board.

9. The electronic cigarette with an anti-reverse-mounting cartridge as described in claim 8, characterized in that, The vibrating element is located at the lower part of the main unit, and the lower end of the mounting inner frame is provided with a receiving groove, in which the vibrating element is received.

10. The electronic cigarette with an anti-reverse-mounting cartridge as described in any one of claims 3 to 7, characterized in that, The electronic cigarette with an anti-reverse-installation cartridge also includes a first magnet and a second magnet. The first magnet is located on the bottom cover of the cartridge, and the second magnet is located at the upper end of the mounting inner frame. After the cartridge is inserted into the mounting slot, it is magnetically fixed to the main unit by the mutual attraction between the first magnet and the second magnet.

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