Card taking linkage structure and card taking device

Abstract

The present invention discloses a card retrieval linkage structure and a card retrieval device, comprising a shell, a card tray and a card base, wherein one end of the shell is provided with a mounting groove; the card tray comprises a rotating part and a mounting part for mounting a card, and the rotating part is accommodated in the mounting groove; the card base is provided in the shell, and an extrusion piece is provided at one end of the card base close to the rotating part; the mounting part is installed in the card base, and one end of the extrusion piece contacts the rotating part, and the other end of the extrusion piece contacts the mounting part. The rotating part is rotated away from the mounting part and close to the side of the extrusion piece, and one side of the rotating part moves into the shell and squeezes one end of the extrusion piece. The extrusion piece is deformed after being squeezed, and its other end squeezes the mounting part. The mounting part moves away from the inside of the shell, and one end of the mounting part moves out of the inside of the shell. The mounting part is pulled out by hand to remove the card from the mounting part. There is no need to use a card retrieval needle. The card installed in the mounting part can be removed by squeezing one side of the rotating part. It is convenient and fast, and easy to remove the card.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and in particular to a card-taking linkage structure and a card-taking device. Background Art

[0002] Traditionally, removing a card requires a pin, and the card tray also requires a pinhole for insertion. This pin is then used to push the card tray outward, allowing for card removal. This design leaves a hole in the tray, making it less dustproof and waterproof. Furthermore, removing the card requires a pin, which isn't always readily available and can be easily lost. Summary of the Invention

[0003] The main purpose of the present invention is to provide a card removal linkage structure and a card removal device, aiming to solve the technical problem that a card needle is required when removing a card, which is inconvenient.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A card taking linkage structure, comprising:

[0006] A housing, one end of which is provided with a mounting groove;

[0007] A card tray, the card tray comprising a rotating portion and a mounting portion for mounting a card, the rotating portion being accommodated in the mounting slot;

[0008] The card base is arranged in the shell, and an extrusion piece is provided at one end of the card base close to the rotating part; the mounting part is installed in the card base and forms a connection relationship with the card base, one end of the extrusion piece is in contact with the rotating part, and the other end of the extrusion piece is in contact with the mounting part. The thrust generated by the rotation of the rotating part is transmitted to the mounting part via the extrusion piece, and the mounting part drives the card base to generate displacement toward the outside.

[0009] Furthermore, a waterproof component is included. The waterproof component is sleeved on the outer side of the rotating part along the circumference of the rotating part, and the waterproof component is interference-fitted with the installation groove.

[0010] Furthermore, the extrusion member includes a first extrusion portion, a second extrusion portion and a rotating portion, the first extrusion portion and the second extrusion portion are arranged on both sides of the rotating portion, and the rotating portion rotates relative to the base; the end of the first extrusion portion away from the rotating portion contacts the rotating portion, and the end of the second extrusion portion away from the rotating portion contacts the mounting portion.

[0011] Furthermore, rotating columns are provided on both sides of the rotating part, and the axes of the rotating columns are perpendicular to the mounting part; the opposite groove edges of the mounting groove are provided with rotating grooves corresponding to the rotating columns, and the rotating columns are correspondingly engaged in the rotating grooves.

[0012] Furthermore, a receiving groove is provided at one end of the rotating part close to the mounting part. When the rotating part rotates and the mounting part is moved away from the shell through the extrusion part, one side of the mounting part moves in the receiving groove, and the groove edge of the receiving groove is used to limit the side of the mounting part moving in the receiving groove.

[0013] Furthermore, it also includes a magnetic block for adsorbing the mounting portion, and the magnetic block is accommodated in an end of the accommodating groove away from the rotating column.

[0014] Furthermore, the card seat includes a base body and a cover body, and the base body and the cover body are assembled to form a storage chamber with one end open, the mounting portion is accommodated in the storage chamber, and the extrusion member is arranged at one end of the base body away from the cover body, and the extrusion member is arranged at the opening of the storage chamber.

[0015] Furthermore, a pressing protrusion is provided on a side of the rotating portion away from the mounting portion.

[0016] Furthermore, a resistance member is included, which is used to increase the friction between the rotating column and the rotating groove. The resistance member is sleeved on the rotating column and is clamped in the rotating groove together with the rotating column.

[0017] The present invention also discloses a card retrieval device, which includes any one of the above-mentioned card retrieval linkage structures.

[0018] Beneficial effects:

[0019] A card removal linkage structure: Rotating a rotating portion away from the mounting portion and closer to the extrusion element causes one side of the rotating portion to move into the housing and squeeze one end of the extrusion element. This squeeze deforms the extrusion element, causing its other end to squeeze the mounting portion, causing the mounting portion to move away from the housing interior. This moves one end of the mounting portion out of the housing, driving the card holder to move. The mounting portion can then be manually pulled out to remove the card from the mounting portion and the card holder. A card mounted on the mounting portion can be removed by simply squeezing one side of the rotating portion, eliminating the need for a card removal needle. This makes card removal quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the card taking linkage structure in a normal state in one embodiment of the present invention;

[0021] Figure 2This is a structural diagram of the card-taking linkage structure in the card-taking state according to one embodiment of the present invention;

[0022] Figure 3 In one embodiment of the present invention Figure 2 Schematic diagram of part of the structure;

[0023] Figure 4 This is a schematic diagram of the partial structural assembly of the card holder and the extrusion member of the card removal linkage structure in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the rotating portion of the card removal linkage structure in one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the card tray in two states according to an embodiment of the present invention;

[0026] Figure 7 2 is a schematic structural diagram of a card tray in two states according to another embodiment of the present invention.

[0027] Among them: 1. Shell; 2. Card tray; 21. Pressing protrusion; 22. Rotating part; 221. Rotating column; 222. Receiving groove; 23. Mounting part; 231. Card slot; 3. Card seat; 31. PIN pin connector; 4. Waterproof part; 5. Magnetic block; 6. Extruded part.

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that the terms “one end”, “the other end”, “first”, “second” and similar expressions used in this article are for illustrative purposes only and should not be understood as indicating or implying relative importance.

[0032] The technical solutions between the various embodiments in the embodiments of the present invention can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Reference Figure 1 、 Figure 2 and Figure 4 In one embodiment, the present invention discloses a card-taking linkage structure, including a shell 1, a card tray 2 and a card base 3, wherein a mounting groove is provided at one end of the shell 1; the card tray 2 includes a rotating portion 22 and a mounting portion 23 for mounting a card, and the rotating portion 22 is accommodated in the mounting groove; the card base 3 is arranged in the shell 1, and an extrusion member 6 is provided at one end of the card base 3 close to the rotating portion 22; the mounting portion 23 is installed in the card base 3 and forms a connection relationship with the card base 3, one end of the extrusion member 6 is in contact with the rotating portion 22, and the other end of the extrusion member 6 is in contact with the mounting portion 23, and the thrust generated by the rotation of the rotating portion 22 is transmitted to the mounting portion 23 via the extrusion member 6, and the mounting portion 23 drives the card base 3 to generate displacement toward the outside.

[0034] In the above embodiment, the rotating portion 22 is rotated away from the mounting portion 23 and closer to the side of the extruding member 6. This side of the rotating portion 22 moves into the housing 1 and squeezes one end of the extruding member 6. The extruding member 6 is deformed by the squeezing, and its other end squeezes the mounting portion 23. The mounting portion 23 moves away from the interior of the housing 1. One end of the mounting portion 23 is removed from the interior of the housing 1. The mounting portion 23 is then manually pulled out to remove the card from the mounting portion 23. A card mounted on the mounting portion 23 can be removed by simply squeezing the side of the rotating portion 22, without using a card removal needle. This is quick and convenient, making card removal easy.

[0035] After the card is removed or replaced, the side of the rotating portion 22 close to the mounting portion 23 rotates out of the mounting slot, and the end away from the mounting portion 23 rotates into the housing 1. The side of the rotating portion 22 that rotates out of the mounting slot is rotated, and the side of the rotating portion 22 located outside the housing 1 moves into the mounting slot, and the side located inside the housing 1 moves into the mounting slot; the end of the rotating portion 22 close to the mounting portion 23 continuously presses the mounting portion 23, and the mounting portion 23 moves into the housing 1 until it contacts one end of the extrusion member 6. At this time, the rotating portion 22 is completely rotated into the mounting slot, and the rotating portion 22 contacts the other end of the extrusion member 6. This completes the installation of the card into the housing 1.

[0036] Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 5 In one embodiment, the card-taking linkage structure further includes a waterproof component 4, which is sleeved on the outer side of the rotating portion 22 along the circumference of the rotating portion 22, and the waterproof component 4 is interference-fitted with the mounting groove.

[0037] In the above embodiment, the waterproof member 4 is sleeved on the outer side of the rotating portion 22 along the circumference of the rotating portion 22. The waterproof member 4 has an interference fit with the mounting groove to prevent external dust or water from entering the housing 1, ensuring that the electronic components and cards in the housing 1 operate normally.

[0038] The rotating portion 22 is housed within the mounting slot. To facilitate card removal, the rotating portion 22 rotates within the slot, creating a gap between the rotating portion 22 and the edge of the mounting slot. This gap allows dust or water to enter the housing 1, which houses the circuit board and other electronic components. A waterproof member 4 is positioned around the rotating portion 22, preventing dust or water from entering the housing 1 through the gap. The waterproof member 4 provides an interference fit with the mounting slot, ensuring that the rotating portion 22 rotates within the slot. This, in turn, ensures that rotation of the rotating portion 22 forces the mounting portion 23 out of the housing 1, facilitating card removal.

[0039] Reference Figures 1 to 7 In one embodiment, the extrusion member 6 includes a first extrusion portion, a second extrusion portion and a rotating portion. The first extrusion portion and the second extrusion portion are arranged on both sides of the rotating portion, and the rotating portion rotates relative to the base 3; the end of the first extrusion portion away from the rotating portion contacts the rotating portion 22, and the end of the second extrusion portion away from the rotating portion contacts the mounting portion 23.

[0040] In the above embodiment, after one end of the rotating part 22 is squeezed by external force, the first squeezing part is squeezed. The first squeezing part is forced to move into the shell 1, and the rotating part rotates relative to the holder 3. The first squeezing part and the second squeezing part are arranged on both sides of the rotation. Using the lever principle, the second squeezing part moves away from the shell 1, pushing the holder 3 out of the shell 1.

[0041] In one embodiment, the waterproof component 4 is made of rubber.

[0042] In the above embodiment, the waterproof component 4 is made of rubber. The rubber material is elastic at room temperature and easy to deform, ensuring that the waterproof component 4 has an interference fit with the installation groove, thereby ensuring the dustproof and waterproof functions.

[0043] Rubber refers to a highly elastic polymer material with reversible deformation. It is highly elastic at room temperature and can produce significant deformation under very small external forces, but it can return to its original shape after the external force is removed. Rotating portion 22 rotates so that it faces the mounting groove. The edge of the mounting groove squeezes waterproof member 4 disposed outside rotating portion 22. This squeeze deforms waterproof member 4 and fills the space between the edge of the mounting groove and rotating portion 22, eliminating a gap between the edge of the mounting groove and rotating portion 22. This prevents external dust or water from entering housing 1. Rotating portion 22 rotates so that it moves out of the mounting groove. The edge of the mounting groove no longer squeezes waterproof member 4, and waterproof member 4 returns to its original shape.

[0044] In one embodiment, the extrusion member 6 is made of elastic material.

[0045] In the above embodiment, the extrusion member 6 is made of an elastic material. When one end is squeezed, the other end deforms due to the force transmission. The rotating portion 22 squeezes one end of the extrusion member 6, causing the other end of the extrusion member 6 to elastically deform. The deformed extrusion portion then squeezes the mounting portion 23, moving the mounting portion 23 away from the interior of the housing 1.

[0046] In addition, the extrusion member 6 can also be a member that can be rotated on the card base 3. The extrusion member 6 is divided into three interconnected parts, among which the second part is located in the middle part of the extrusion member 6, and the second part can be rotated relative to the card base 3, and the first part and the third part are located on both sides of the second part. The first part is in conflict with the mounting part 23, and the third part is in conflict with the rotating part 22. When the card needs to be taken out, one side of the rotating part 22 is rotated, and the rotating part 22 squeezes the third part of the extrusion member 6. According to the principle of lever, after the third part obtains the extrusion force, the second part rotates relative to the card base 3, the third part rotates into the shell 1, and the first part moves out of the shell 1. At the same time, the first part squeezes the mounting part 23, and the mounting part 23 moves in the direction away from the shell 1. At this time, the card installed on the mounting part 23 can be taken out. Similarly, when the mounting part 23 needs to be installed in the shell 1, the other side of the rotating part 22 is rotated, the rotating part 22 squeezes the mounting part 23, and the mounting part 23 squeezes the first part. According to the principle of leverage, after the first part obtains the squeezing force, the second part rotates relative to the card seat 3, the first part rotates toward the inside of the shell 1, and the third part moves toward the outside of the shell 1. The rotating part 22 rotates as a whole. At the same time, the third part squeezes one side of the rotating part 22, and the part of the rotating part 22 located in the shell 1 moves away from the inside of the shell 1, and the part outside the shell 1 moves toward the inside of the shell 1. Finally, the rotating part 22 is completely rotated into the mounting groove.

[0047] Reference Figures 1 to 5 In one embodiment, rotating columns 221 are provided on both sides of the rotating portion 22, and the axis of the rotating column 221 is perpendicular to the mounting portion 23; the opposite groove edge of the mounting groove is provided with a rotating groove corresponding to the rotating column 221, and the rotating column 221 is correspondingly engaged in the rotating groove.

[0048] In the above embodiment, the rotating portion 22 is a rectangular parallelepiped (it can also be other shapes, and the rectangular parallelepiped is used as an example here). Among the six faces of the rotating portion 22, one face is opposite to the extrusion member 6 and the mounting portion 23. The two faces provided with the rotating posts 221 are perpendicular to the faces opposite to the mounting portion 23, ensuring that the rotating portion 22 is rotated away from one face inside the housing 1 and away from one end of the mounting portion 23, so that the mounting portion 23 can be ejected. Whether removing a card or moving the mounting portion 23 into the housing 1, the rotating portion 22 needs to be rotated. The rotating posts 221 on the rotating portion 22 are correspondingly engaged with the rotating grooves on the mounting grooves, further limiting the rotating portion 22 and preventing the rotating portion 22 from falling out of the mounting groove during rotation, ensuring the next use.

[0049] Reference Figures 1 to 5 In one embodiment, a receiving groove 222 is provided at one end of the rotating portion 22 close to the mounting portion 23. When the rotating portion 22 rotates and the mounting portion 23 is moved away from the shell 1 through the extrusion portion, one side of the mounting portion 23 moves in the receiving groove 222, and the groove edge of the receiving groove 222 is used to limit the side of the mounting portion 23 moving in the receiving groove 222.

[0050] In the above embodiment, under normal conditions, the mounting portion 23 is located inside the shell 1, the rotating portion 22 is located in the mounting groove and is parallel to the mounting groove, one end of the extruding piece 6 is in contact with the rotating portion 22, and the other end of the extruding piece 6 is in contact with one end of the mounting portion 23, and the other end of the mounting portion 23 is located outside the accommodating groove 222. When the rotating portion 22 is rotated, there is a certain angle between the rotating portion 22 and the mounting groove. After the mounting portion 23 is ejected, the mounting portion 23 is pulled outward by hand, and a corner of the mounting portion 23 moves into the accommodating groove 222. The mounting portion 23 is continuously pulled outward, and a corner of the mounting portion 23 moves in the accommodating groove 222, and the rotating portion 22 is continuously squeezed. The angle between the rotating portion 22 and the mounting groove continues to change until the rotating portion 22 is perpendicular to the mounting groove. At this time, the card installed on the mounting portion 23 can be taken out, or the card can be installed on the mounting portion 23. When the mounting portion 23 moves in a direction away from the housing 1, one side of the mounting portion 23 moves in the receiving groove 222. This not only ensures that when the mounting portion 23 is pulled outward by hand, the rotating portion 22 can be squeezed to be perpendicular to the mounting groove, making it easier to remove the card or install the card in the mounting portion 23; it also further limits the mounting portion 23 when it is pulled out. When the mounting portion 23 is pulled out, one corner of the mounting portion 23 moves in the receiving groove 222 to prevent the mounting portion 23 from separating from the rotating portion 22. Further limiting the mounting portion 23 makes it easier to use it next time. It is worth mentioning that the mounting portion is connected to the rotating portion through the mounting groove, which also contributes to the stability of the overall structure during movement.

[0051] In one embodiment, the card-taking linkage structure further includes a magnetic block 5 for adsorbing the mounting portion 23 . The magnetic block 5 is received in an end of the receiving groove 222 away from the rotating post 221 .

[0052] In the above embodiment, under normal conditions, mounting portion 23 is located within housing 1, with the end closest to rotating portion 22 contacting magnet 5 within receiving slot 222, causing magnet 5 to attract mounting portion 23. After mounting portion 23 is ejected from housing 1, when withdrawing mounting portion 23, it remains attracted to magnet 5, providing a more secure and effective withdrawal.

[0053] The magnet 5 does not fill the entire receiving groove 222. It abuts one edge of the receiving groove 222, leaving a certain distance between it and the other opposite edge. This portion of the receiving groove 222 serves to limit the mounting portion 23, allowing the mounting portion 23 to move within it. Rotating the rotating portion 22 overcomes the magnetic force of the magnet 5 on the mounting portion 23, driving the magnet 5 away from the interior of the housing 1. The mounting portion 23 is ejected, and a corner of the mounting portion 23 moves into the receiving groove 222. When the mounting portion 23 is pulled outward, the corner of the mounting portion 23 moves within the receiving groove 222. At this point, the adsorption force of the magnet 5 on the mounting portion 23 ensures more powerful and reliable extraction.

[0054] In one embodiment, the card seat 3 includes a base body and a cover body, and the base body and the cover body are assembled to form a accommodating chamber with one end open. The mounting portion 23 is accommodated in the accommodating chamber, and the extrusion member 6 is arranged at one end of the base body away from the cover body, and the extrusion member 6 is arranged at the opening of the accommodating chamber.

[0055] In the above embodiment, the mounting portion 23 is accommodated in the accommodation chamber, and the mounting portion 23 is further limited to ensure the position of the mounting portion 23 after multiple card removal and card installation. The mounting portion 23 moves out of the housing 1 through the opening at one end of the accommodation chamber.

[0056] The mounting portion 23 has a card slot 231 (the number and size of the card slot 231 are set according to needs) for placing a card (different cards can be placed according to needs), and a PIN pin connector 31 is provided on the base body, which is communicated with the pins on the card. The side of the card with the pins faces the PIN pin connector 31. The mounting portion 23 drives the card to move into the accommodating compartment, and the cover body further limits and squeezes the card to maintain full connection between the PIN pin connector 31 and the card.

[0057] The housing 1 also houses a motherboard, which is fixed to the wall of the housing 1. The end of the base, away from the cover, is mounted on the motherboard to prevent the base from shaking when the mounting portion 23 is moved. This ensures that the pins on the card communicate with the PIN pin connector 31. The PIN pin connector 31 on the base communicates with the motherboard, ensuring that all functions of the card function properly.

[0058] In one embodiment, a pressing protrusion 21 is provided at one end of the rotating portion 22 away from the mounting portion 23 .

[0059] In the above embodiment, the pressing protrusion 21 serves as a reminder. To remove a card, one simply follows the prompt of the pressing protrusion 21 and presses the anti-pressing protrusion 21. The rotating portion 22 rotates toward the interior of the housing 1 to push the mounting portion 23 out. After removing the card or reinstalling the card, one simply rotates the rotating portion 22 out of the mounting slot; no reminder is required.

[0060] The mounting portion 23 is ejected by rotating the rotating portion 22 to remove the card. The rotating portion 22 also needs to be rotated when pushing the mounting portion 23 into the housing 1. Under normal conditions, the rotating portion 22 is located within the mounting slot and is parallel to the mounting slot. When the card needs to be removed, the rotating portion 22 only needs to be rotated away from the inside of the housing 1 and away from the mounting portion 23. Rotating the rotating portion 22 in this position can squeeze the extrusion member 6 and eject the mounting portion 23. A pressing protrusion 21 is provided on the side of the rotating portion 22 away from the inside of the housing 1 and away from the mounting portion 23. By pressing the protrusion, the rotating portion 22 can squeeze the extrusion member, thereby ejecting the mounting portion 23, making it convenient and quick to remove the card.

[0061] In one embodiment, the card removal linkage structure further includes a resistance member, which is used to increase the friction between the rotating column 221 and the rotating groove. The resistance member is sleeved on the rotating column and is engaged in the rotating groove together with the rotating column 221.

[0062] In the above embodiment, the rotating part 22 is squeezed, and the rotating column 221 is correspondingly engaged in the rotating groove. The resistance member rotates relative to the rotating groove, and the resistance member increases the resistance to the rotational movement of the rotating part 22. For example, the resistance member can be designed to increase the friction between the rotating column 221 and the rotating groove. The main purpose is to prevent the rotating part 22 from being subjected to a small force and being accidentally squeezed to the rotating part 22, which will cause the rotating part 22 to rotate.

[0063] In one embodiment, the present invention further discloses a card retrieval device, which includes any of the above-mentioned card retrieval linkage structures.

[0064] In the above embodiment, the device using this card retrieval device can achieve quick and convenient card retrieval, which can be used not only in mobile phone solutions but also in other designs that require card retrieval.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A card taking linkage structure, characterized in that: include: A housing, one end of which is provided with a mounting groove; A card tray, the card tray comprising a rotating portion and a mounting portion for mounting a card, the rotating portion being accommodated in the mounting slot; The card base is arranged in the housing, and an extrusion piece is provided at one end of the card base close to the rotating part; the mounting part is installed in the card base and forms a connection relationship with the card base, one end of the extrusion piece contacts the rotating part, and the other end of the extrusion piece contacts the mounting part. The thrust generated by the rotation of the rotating part is transmitted to the mounting part via the extrusion piece, and the mounting part drives the card base to move outward; The extrusion member includes a first extrusion portion, a second extrusion portion, and a rotating portion, wherein the first extrusion portion and the second extrusion portion are arranged on both sides of the rotating portion, and the rotating portion rotates relative to the card seat; an end of the first extrusion portion away from the rotating portion abuts against the rotating portion, and an end of the second extrusion portion away from the rotating portion abuts against the mounting portion; Rotating columns are provided on both sides of the rotating part, and the axes of the rotating columns are perpendicular to the mounting part; rotating grooves corresponding to the rotating columns are provided on the opposite groove edges of the mounting groove, and the rotating columns are correspondingly engaged in the rotating grooves.

2. The card-taking linkage structure according to claim 1, characterized in that: It also includes a waterproof part, which is sleeved on the outer side of the rotating part along the circumference of the rotating part, and the waterproof part is interference fit with the installation groove.

3. The card-taking linkage structure according to claim 1, characterized in that: A receiving groove is provided at one end of the rotating part close to the mounting part. When the rotating part rotates and the mounting part is moved away from the shell through the extrusion part, one side of the mounting part moves in the receiving groove, and the groove edge of the receiving groove is used to limit the side of the mounting part moving in the receiving groove.

4. The card-taking linkage structure according to claim 3, characterized in that: It also includes a magnetic block for adsorbing the mounting portion, and the magnetic block is accommodated in an end of the accommodating groove away from the rotating column.

5. The card-taking linkage structure according to claim 1, characterized in that: The card seat includes a base body and a cover body, and the base body and the cover body are assembled to form a storage chamber with one end open. The mounting portion is accommodated in the storage chamber, and the extrusion member is arranged at one end of the base body away from the cover body, and the extrusion member is arranged at the opening of the storage chamber.

6. The card-taking linkage structure according to claim 1, characterized in that: A pressing protrusion is provided on a side of the rotating portion away from the mounting portion.

7. The card-taking linkage structure according to claim 1, characterized in that: It also includes a resistance piece, which is used to increase the friction between the rotating column and the rotating groove. The resistance piece is sleeved on the rotating column and is clamped in the rotating groove together with the rotating column.

8. A card removal device, characterized in that: The card retrieval device includes the card retrieval linkage structure according to any one of claims 1 to 7.

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