A card receiving mechanism, device, and control method capable of rejecting irregularly shaped cards.

Abstract

This invention provides a card-feeding mechanism, device, and control method capable of rejecting irregularly shaped cards. The card-feeding mechanism includes: a card holder, comprising a base body, a card insertion slot, and a first lug and a second lug; a first pusher, rotatably disposed between the two lugs, comprising a first rotating shaft, a first boot-shaped abutment, and a first rotating sleeve; the bottom edge of the first boot-shaped abutment facing the insertion slot has an inclined friction surface; a second pusher, rotatably disposed between the two lugs at a distance from the second pusher, comprising a second rotating shaft and a second boot-shaped abutment; a connecting member, with both ends on one side hinged to the first rotating sleeve and both ends on the other side hinged to the ends of the second boot-shaped abutment; and the card holder, the first pusher, the second pusher, and the connecting member constitute a double rocker four-bar linkage mechanism; a limiting member for limiting the backward rotation angle of the first pusher; and an elastic member for providing a reset thrust for the first pusher. This invention can effectively reject the insertion of irregularly shaped cards and reduce the equipment failure rate.

Description

Technical Field

[0001] This invention relates to the field of financial self-service terminal equipment technology, and in particular to a card receiving mechanism, card receiving and dispensing equipment and control method capable of rejecting irregularly shaped cards. Background Technology

[0002] Currently, many services conducted on this device require customers to insert cards to access their user information. However, when a card becomes deformed, it often gets stuck inside the device module. This malfunction has two main consequences: First, it disrupts business operations, affecting other users and impacting the device's efficiency. Second, authorized personnel are required to open the device and remove the card, making the process cumbersome and time-consuming.

[0003] If it is a 24-hour unattended service point, any irregularly shaped card stuck in the module will greatly affect the user experience and the utilization rate of the equipment.

[0004] Therefore, there is an urgent need for a card feeding mechanism, equipment, and control method that can reject irregularly shaped cards, effectively preventing the insertion of irregularly shaped cards and avoiding equipment malfunctions caused by card deformation. Summary of the Invention

[0005] The purpose of this invention is to provide a card feeding mechanism, device, and control method that can reject irregularly shaped cards, thereby solving the technical problem that traditional card feeding mechanisms are prone to jamming and causing equipment failure when dealing with irregularly shaped cards.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a card insertion mechanism capable of rejecting irregularly shaped cards, comprising:

[0007] A card holder is used to install a card inlet / outlet on a device. It includes a holder body, a card insertion port located at its front end, and a first lug and a second lug respectively located on both sides of the holder body.

[0008] The first pusher is rotatably disposed between the two lugs, and includes a first rotating shaft, a first boot-shaped abutment extending toward the bottom of the seat body, and a first rotating sleeve disposed away from the boot-shaped abutment; the first boot-shaped abutment has an inclined friction surface on its bottom edge facing the insertion port;

[0009] The second pusher, rotatably disposed between the two lugs at a distance from the second pusher, includes a second rotating shaft and a second boot-shaped abutment extending toward the bottom of the seat body;

[0010] The connector has two ends on one side hinged to the first rotating sleeve, and two ends on the other side hinged to the two ends of the second boot-shaped pushing part; and the card seat, the first pusher, the second pusher and the connector constitute a double rocker four-bar linkage mechanism.

[0011] A limiting member, located between the first pusher and the second pusher, is used to limit the rearward rotation angle of the first pusher;

[0012] An elastic element is disposed between the limiting element and the first rotating shaft to provide a reset thrust for the first pusher.

[0013] As a further improvement to the above solution, under normal conditions, the first pusher remains vertical, and there is a first gap D1 between the bottom of the second boot-shaped pusher and the seat body, and D1 > T, which allows the standard card to pass through smoothly, where T is the card thickness.

[0014] In an abnormal state, the deformable part of the card contacts the inclined friction surface and pushes the first pusher to swing backward, and drives the second pusher to swing backward through the connector, so that there is a second gap D2 between the bottom of the second boot-shaped pusher and the seat body, and D2 < T, preventing the deformable card from entering.

[0015] As a further improvement to the above solution, the first boot-shaped pushing part includes a first vertical plate and a first horizontal plate disposed on one side of the bottom of the first vertical plate, and its cross-section is L-shaped;

[0016] The first horizontal plate is positioned toward the card insertion port, and the inclined friction surface is positioned at the end of the first horizontal plate facing the card insertion port.

[0017] As a further improvement to the above solution, the inclined friction surface forms a preset angle with the plane containing the card insertion direction. θ Preferably, 20°≤ θ ≤35°;

[0018] Furthermore, the inclined friction surface is provided with textures to increase friction or with friction pads to increase friction.

[0019] As a further improvement to the above solution, the first pusher includes two first rotating sleeves, which are respectively disposed at both ends of the first horizontal plate and located on the side of the first horizontal plate opposite to the card insertion port.

[0020] As a further improvement to the above solution, the second boot-shaped pushing part includes a second vertical plate and a second rotating sleeve disposed on one side of the bottom of the second vertical plate;

[0021] The connector includes a swing shaft, a connecting plate, and two swing sleeves. The swing shaft is disposed on one side of the connecting plate and is rotatably connected to the first sleeve.

[0022] The two swing sleeves are respectively disposed at both ends of the other side of the connecting plate, and are used to rotatably connect with the second sleeve.

[0023] As a further improvement to the above solution, the limiting member is a limiting plate fixedly disposed between the first and second ears, and there is a gap between the bottom surface of the limiting plate and the card insertion surface of the seat body, and the gap is at least twice the thickness of the card.

[0024] As a further improvement to the above solution, the material of the elastic element is any one of silicone rubber, thermoplastic polyurethane (TPU), ethylene propylene diene monomer (EPDM) rubber, or hydrogenated nitrile butadiene rubber (HNBR).

[0025] The elastic element includes an elastic body that undergoes elastic deformation and stores recovery potential energy when subjected to a compressive load along its axial direction.

[0026] When the compressive load is released, the elastic body automatically returns to its initial shape based on the restoring potential energy.

[0027] The outer surface of the elastic body is provided with at least one contact interface, which is configured to form physical contact with the first pusher.

[0028] During the process of restoring the elastic body to its initial shape, a reset driving force is applied to the first pusher through the contact interface, driving the first pusher to return to its initial position.

[0029] Secondly, the present invention also provides a card reader, including a housing, a card reader mechanism provided in the first aspect that is disposed within the housing and capable of rejecting irregularly shaped cards, and a card reader disposed at the rear end of the card reader mechanism for identifying card information;

[0030] The card reader includes a lower card reader housing and an upper card reader housing hinged to one end of the lower card reader housing, as well as a lower friction wheel disposed in the lower card reader housing and an upper friction wheel disposed in the upper card reader housing. The upper friction wheel and the lower friction wheel are matched and configured to form a push chamber for pushing the card into / out of the device.

[0031] Thirdly, the present invention also provides a card access control method for a card access device as provided in the second aspect, the steps of which include:

[0032] S1. When a standard card is inserted, the first pusher remains vertical. The standard card enters the card reader through the first gap D1. The upper and lower friction wheels rotate in the forward direction, pushing the card into the card reader for card information recognition. When the user finishes the operation, the upper and lower friction wheels are controlled to rotate in the reverse direction, pushing the card out of the card reader and then out of the card insertion port through the first gap D1.

[0033] S2. When the abnormal card enters, the deformable part of the card contacts the inclined friction surface of the first boot-shaped pushing part.

[0034] Under the action of friction, the first pusher is pushed to swing backward, and the second pusher is driven to swing backward through the connecting piece. The second gap D2 between the bottom of the second boot-shaped pusher and the seat body is less than T, preventing the deformable card from entering.

[0035] As a further improvement to the above scheme, in step S2, the first pusher swings backward and touches the elastic member, and the elastic member is compressed and stores energy; when the abnormal card is pulled out and the external force is released, the elastic member applies a reset driving force to the first pusher during the process of returning to the initial shape, driving the first pusher to return to the initial position.

[0036] As a further improvement to the above solution, in step S2, when the deformable part of the abnormal card is located at the front end of the card (with the card entering direction as the front), the front end of the abnormal card has not entered the push cavity, and the deformable part directly triggers the dual rocker four-bar linkage to prevent the card from entering.

[0037] When the deformable part of the abnormal card is located at the rear end of the card, and the front end of the abnormal card has entered the feeding chamber, and the card feeding time exceeds the preset time, the upper friction wheel and the lower friction wheel are controlled to rotate in opposite directions, so that the abnormal card is removed from the device.

[0038] Because the present invention adopts the above technical solutions, the beneficial effects of this application are as follows:

[0039] 1. This invention provides a card feeding mechanism capable of rejecting irregularly shaped cards. A deformable card feeding channel is formed by a double-rocker four-bar linkage consisting of a card holder, a first pusher, a second pusher, and a connecting member. Through the linkage between the inclined friction surface of the boot-shaped pushing part of the first pusher and the second pusher, the channel height remains constant when a standard card is inserted, ensuring smooth card entry into the card reader module. When an irregularly shaped card (such as a bent or warped card) is inserted, the additional pressure generated by its abnormal deformation forces the first pusher to rotate around the axial limiting member. The connecting member drives the second pusher to move synchronously, instantly... By reducing the vertical height of the card entry channel, a physical barrier is formed to prevent irregularly shaped cards from entering, achieving active rejection. The elastic element applies a reset thrust to the first rotating shaft, ensuring that the four-bar linkage automatically returns to the initial channel state after the irregularly shaped card exits, eliminating the need for manual reset intervention. The limiting element's rigid constraint on the rotation angle of the first pusher prevents overload damage to the mechanism. Combined with the buffering effect of the elastic element, the mechanism can withstand high-frequency impacts from abnormal cards. The purely mechanical rejection scheme provided by this invention eliminates the risk of misjudgment by electronic sensors and avoids malfunctions caused by environmental dust and electromagnetic interference.

[0040] 2. The present invention also provides a method for controlling the access card of an access card device. When operating with a standard card, the first pusher is maintained in a vertical state, and the gap D1 is kept constant to ensure smooth card access and exit. During exception handling, the elastic member buffers the swinging impact force, avoiding hard collisions and damage to the mechanism, and extending the service life of the device. Additionally, through the contact mechanical response between the inclined friction surface and the card deformation part, the card deformation is directly converted into the swinging displacement of the first pusher, triggering the instantaneous action of the four-bar mechanism, compressing the second gap D2 to below the thickness threshold T, and physically blocking the abnormal card at the front end to prevent illegal entry into the card reading module and causing hardware damage (such as chip contact scratching, transmission mechanism jamming).

[0041] At the same time, for abnormal cards, immediate interception at the front end: when the deformation part is located in the middle or front section of the card, the four-bar mechanism triggers locking (second gap D2 < T) before the front end of the card enters the propulsion chamber, completely blocking the entry of abnormal cards and eliminating the subsequent processing burden. Delayed exit at the rear end: when the deformation part is located at the rear end of the card, using the physical state that the front end has entered the propulsion chamber and combining with the overrun of the card entry time, the friction wheel is automatically triggered to rotate in the reverse direction to forcibly exit the partially inserted abnormal card, preventing the card reading module from having a half-swallowed card failure. Combining mechanical blocking (front-end exception) with electronic timeout detection (rear-end exception) covers the risk points of the entire card entry path. The forward and reverse rotation control of the double friction wheels is only used for standard card propulsion and rear-end abnormal exit, avoiding mechanism overload caused by forced card entry of abnormal cards.

[0042] In addition, in some preferred embodiments, the elastic member accumulates deformation energy during the swinging of the mechanism, and automatically releases the stored energy to drive the first pusher to reset after the abnormal card is pulled out, restoring the initial gap D1 of the four-bar mechanism, without the need for additional sensors or motors to participate in the state reset, significantly reducing energy consumption and failure rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0044] Figure 1 An explosion diagram of an access card mechanism capable of rejecting异形 cards installed on a device disclosed by the present invention;

[0045] Figure 2 A three-dimensional schematic diagram of a connecting member disclosed by the present invention;

[0046] Figure 3 A partial cross-sectional schematic diagram of the access card mechanism installed on a device disclosed by the present invention;

[0047] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0048] Figure 5 This is a partially enlarged schematic diagram of a card reader for a card access device disclosed in this invention;

[0049] Figure 6 This is a partially enlarged schematic diagram showing the irregularly shaped card just entering the card feeding mechanism disclosed in this invention, before the dual-rocker four-bar linkage mechanism is triggered;

[0050] Figure 7 A partially enlarged schematic diagram showing the triggering of a dual-rocker four-bar linkage mechanism as the irregularly shaped card with its deformed front end enters the card-feeding mechanism disclosed in this invention. Figure 1 ;

[0051] Figure 8 A partially enlarged schematic diagram showing the triggering of a dual-rocker four-bar linkage mechanism as the irregularly shaped card with its deformed front end enters the card-feeding mechanism disclosed in this invention. Figure 2 Figure a is a magnified front view of the card entry channel as the irregularly shaped card continues to penetrate deeper, showing the instantaneous reduction in the vertical height of the card entry channel; Figure b is a three-dimensional schematic diagram of the instantaneous reduction in the vertical height of the card entry channel as the irregularly shaped card continues to penetrate deeper.

[0052] Figure 9 This is a partially enlarged schematic diagram of the irregularly shaped card, which is deformed at the rear end, entering the card feeding mechanism disclosed in this invention, and about to enter the propulsion cavity.

[0053] Figure 10 This is a partial perspective view of an access card device disclosed in this invention;

[0054] Figure 11 This is a perspective view of the card reader disclosed in this invention;

[0055] Figure 12 This is a three-dimensional schematic diagram of the second pusher disclosed in this invention.

[0056] Figure label:

[0057] 1. Card holder; 11. Holder body; 12. Card insertion slot; 13. First lug; 14. Second lug; 2. First pusher; 21. First pivot; 22. First boot-shaped pusher; 23. First rotating sleeve; 24. Inclined friction surface; 25. First vertical plate; 26. First horizontal plate; 3. Second pusher; 31. Second pivot; 32. Second boot-shaped pusher; 33. Second vertical plate; 34. Second rotating sleeve; 4. Limiting element; 5. Elastic element;

[0058] 6. Equipment housing; 7. Card reader; 71. Lower housing of card reader; 72. Upper housing of card reader; 73. Lower friction wheel; 74. Upper friction wheel; 8. Connecting parts; 81. Swinging shaft; 82. Connecting plate; 83. Swinging sleeve; 0. Card.

[0059] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0062] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0063] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0064] Example 1

[0065] This invention provides a card-feeding mechanism capable of rejecting irregularly shaped cards. Its core lies in recognizing and blocking irregularly shaped cards through a purely mechanical structure.

[0066] like Figures 1-12 As shown, the card feeding mechanism includes a card holder 1, a first pusher 2, a second pusher 3, a connecting member 8, a limiting member 4, and an elastic member 5;

[0067] The card holder 1 is used to be fixedly installed at the card inlet / outlet of equipment (such as self-service terminal, card reader 7, etc.); the card holder 1 includes a base body 11, the front end of the base body 11 is provided with a card insertion port 12 for receiving standard cards 0 or possibly irregularly shaped cards 0; on both sides of the base body 11 (usually the left and right sidewalls parallel to the card 0 conveying plane), a first ear 13 and a second ear 14 extending upward are respectively provided; the first ear 13 and the second ear 14 are provided with shaft holes or bearing positions for supporting the rotation of the first rotating shaft 21 and the second rotating shaft 31;

[0068] The first pusher 2 is rotatably mounted between the first lug 13 and the second lug 14 via the first rotating shaft 21 at both ends (i.e., the two ends of the first rotating shaft 21 are respectively installed in the shaft holes / bearing positions of the two lugs); the first pusher 2 includes the first rotating shaft 21, the first boot-shaped abutment 22 extending downward from the first rotating shaft 21 toward the bottom of the seat body 11, and the first rotating sleeve 23 extending upward from the first rotating shaft 21 away from the first boot-shaped abutment 22; an inclined friction surface 24 is provided on the bottom edge of the first boot-shaped abutment 22 facing the card 0 insertion port 12, and the inclined friction surface 24 is the key surface for rejecting irregularly shaped cards 0;

[0069] The second pusher 3 is spaced apart from the first pusher 2, and is rotatably mounted between the first lug 13 and the second lug 14 via the second rotating shaft 31 at both ends (the two ends of the second rotating shaft 31 are mounted in the lug shaft hole / bearing position at the corresponding position); the second pusher 3 includes the second rotating shaft 31 and the second boot-shaped abutment 32 extending downward from the second rotating shaft 31 toward the bottom of the seat body 11.

[0070] The connector 8 is a key component connecting the two. Its two ends on one side (the side closer to the first pusher 2) are respectively hinged to the two ends of the first rotating sleeve 23 on the first pusher 2 via hinge shafts; its two ends on the other side (the side closer to the second pusher 3) are also respectively hinged to the two ends of the second boot-shaped pushing part 32 via another pair of hinge shafts.

[0071] Thus, the fixed mounting base 1 (as the frame), the first pusher 2 (as the main rocker), the second pusher 3 (as the driven rocker), and the connecting member 8 (as the linkage) together constitute a typical double rocker four-bar linkage mechanism.

[0072] The limiting member 4 (which may be a limiting block, limiting post, or limiting protrusion fixed on the seat body 11) is located in the space between the first push member 2 and the second push member 3. The main function of the limiting member 4 is to limit the maximum angle (stop position) of the first push member 2 rotating backward (i.e., away from the card 0 insertion port 12) around the first rotating axis 21, to prevent excessive rotation and ensure the reset position.

[0073] The elastic element 5 is disposed between the region of the limiting element 4 and the first rotating shaft 21 (or its vicinity) of the first pusher 2. A typical embodiment is that one end of the elastic element 5 is fixed to or attached to the first rotating shaft 21, the first rotating sleeve 23, or directly mounted on the body of the first pusher 2, while the other end is fixed to or attached to the limiting element 4 or to the holder 1 at a position adjacent to the limiting element 4. The elastic element 5 is pre-compressed or pre-torsed, applying a reset thrust (or torque) to the first pusher 2, causing it to rotate counterclockwise or clockwise (depending on the installation method). This reset thrust pushes the first pusher 2 to maintain its initial position in contact with the limiting element 4.

[0074] Under normal conditions, the first pusher 2 remains vertical, and there is a first gap D1 between the bottom of the second boot-shaped pusher 32 and the seat body 11, where D1 > T, allowing the standard card 0 to pass through smoothly, where T is the thickness of the card 0.

[0075] In an abnormal state, the deformed part of card 0 contacts the inclined friction surface 24 and pushes the first pusher 2 to swing backward, and drives the second pusher 3 to swing backward through the connector 8, so that there is a second gap D2 between the bottom of the second boot-shaped pusher 32 and the seat body 11, and D2 < T, preventing the deformed card 0 from entering.

[0076] Specifically, when the standard card 0 (with uniform thickness and straight edges) is inserted into the card 0 insertion port 12, it will not contact or push the inclined friction surface 24 on the first boot-shaped push part 22; the first pusher 2 remains vertical, and the standard card 0 enters the card reader 7 through the first gap D1. Since the first gap D1 is greater than the thickness T of the standard card 0, it has sufficient channel space, and the standard card 0 can pass through smoothly and penetrate into the card reading area of ​​the device.

[0077] When an irregularly shaped card 0 (such as a card 0 with warped, curled, folded, severely bent, or with attached material) is inserted, the deformed part of the card 0 contacts the inclined friction surface 24 of the first boot-shaped pushing part 22. Under the action of friction, the first pushing member 2 is forced to rotate around the axis of the limiting member 4. The second pushing member 3 is driven to move synchronously through the connecting member 8, instantly reducing the vertical height of the card insertion channel, forming a physical barrier to the irregularly shaped card 0, and achieving an active rejection effect. After the card 0 is pulled out, under the action of the reset thrust of the elastic member 5, the first pushing member 2 rotates in the opposite direction around the first rotating axis 21 to reset to the initial position, and drives the second pushing member 3 to rotate and reset together through the connecting member 8, restoring the initial state and waiting for the next card insertion.

[0078] The card feeding mechanism provided by this invention forms a deformable card feeding channel through a double-rocker four-bar linkage consisting of a card holder 1, a first pusher 2, a second pusher 3, and a connecting member 8. Through the linkage between the inclined friction surface 24 of the boot-shaped pushing part of the first pusher 2 and the second pusher 3, the channel height remains constant when a standard card 0 is inserted, ensuring smooth entry of the card 0 into the card reader module. When an irregularly shaped card 0 (such as a bent or warped card) is inserted, the additional pressure generated by its abnormal deformation forces the first pusher 2 to rotate around the axial limiting member 4. The connecting member 8 drives the second pusher 3 to move synchronously, instantly reducing the vertical height of the card feeding channel and creating a physical barrier against the irregularly shaped card 0, achieving an active rejection effect. The entire structure is implemented using a combination of conventional mechanical parts, eliminating the need for complex sensors, electronic controllers, or expensive electromagnets. The four-bar linkage mechanism... It is a mature and reliable transmission mechanism with mature manufacturing process and low cost of parts processing and assembly; the streamlined structure is also conducive to miniaturization and lightweight design; the design based on the four-bar linkage ensures the determinism of the mechanism's motion; the limit component 4 precisely sets the initial and limit positions, while the elastic component 5 provides a constant restoring force; when inserting a standard card 0, the user can feel the smoothness of pushing it in; when inserting an irregularly shaped card 0, the user will clearly feel a huge resistance or obstruction, providing clear feedback, which will discourage the user from forcing the insertion; the pure mechanical structure means less risk of electronic component failure, and the main wear parts are the bushings or hinge points and the elastic component 5, which are all common wear parts, easy and quick to replace, and extremely low maintenance costs; making the overall structure robust and durable with a long service life.

[0079] The card feeding mechanism provided by this invention ingeniously utilizes a double rocker four-bar linkage and the principle of friction mechanics to achieve a highly efficient and reliable zero-rejection function for irregularly shaped cards with a simple and reliable pure mechanical structure. At the same time, it has significant advantages such as low cost, easy maintenance, long service life, and strong versatility.

[0080] As a preferred embodiment, see Figure 4 , Figure 6 and Figure 7 The first boot-shaped pushing part 22 includes a first vertical plate 25 and a first horizontal plate 26. The first horizontal plate 26 is fixedly connected to the bottom side of the first vertical plate 25, and the two are orthogonally connected to form a rigid structure with an L-shaped cross section.

[0081] The extension direction of the first horizontal plate 26 is set toward the card 0 insertion port 12 to ensure that its movement trajectory is coordinated with the card 0 pushing direction;

[0082] An inclined friction surface 24 is constructed at the end of the first horizontal plate 26 (i.e., the side end face of the card insertion port 12), and the inclined friction surface 24 forms a preset angle with the plane containing the card insertion direction. θ included angle θ The optimization range is 20°≤ θ ≤35°, preferably in this embodiment θ =30°;

[0083] The inclined friction surface 24 is processed with fine textures (such as interlaced grooves and dot matrix protrusions), or the friction pad (made of rubber, polyurethane or composite high friction coefficient material) is fixed by bonding or embedding.

[0084] When the first pusher 2 maintains a vertical working state under the action of the elastic member 5, the inclined friction surface 24 forms a 30° angle with the plane where the card insertion direction is located. When the standard card 0 passes through, since the first gap D1 is greater than the thickness T of the standard card 0, the standard card 0 will not contact the inclined friction surface 24.

[0085] When the irregularly shaped card 0 passes by, its raised or recessed deformed portion causes the irregularly shaped card 0 to disengage from the inclined friction surface 24. At this time:

[0086] The normal component force generated by the inclined friction surface 24 presses the card 0 against the bottom surface of the base body 11, increasing the frictional resistance between the irregular card 0 and the bottom surface of the base body 11, making it difficult for it to continue to advance.

[0087] At the same time, the tangential force generated by the inclined friction surface 24 drives the first pusher 2 to rotate in the direction of the limiting member 4, and drives the second pusher 3 to move synchronously through the connecting member 8, instantly reducing the vertical height of the card entry channel, forming a physical barrier to the irregular card 0, and achieving an active rejection effect.

[0088] As a preferred embodiment, see Figure 1 and Figure 7 A first rotating sleeve 23 is provided at each end of the first horizontal plate 26 of the first pusher 2 (i.e., at the two ends away from its middle region);

[0089] Both first rotating sleeves 23 are located on the side of the first horizontal plate 26 opposite to the card 0 insertion port 12. The arrangement of the two first rotating sleeves 23 facilitates the rotatable insertion of the swing shaft 81 of the connector 8 into the corresponding first rotating sleeve 23. The two first rotating sleeves 23 are symmetrically distributed at both ends of the first horizontal plate 26, providing dual-point support for the connector 8. This structure greatly improves the mechanical stability and force balance of the first pusher 2 in the card pushing action, and effectively prevents the pusher from being biased, stuck or aggravated by force on one side.

[0090] As a preferred embodiment, see Figure 7 , Figure 8 and Figure 12 The second boot-shaped pushing part 32 includes a second vertical plate 33 and a second rotating sleeve 34 disposed on one side of the bottom of the second vertical plate 33 (bottom front edge);

[0091] See Figure 2 The connecting member 8 includes a swing shaft 81, a connecting plate 82, and two swing sleeves 83. The swing shaft 81 is rigidly disposed on one side (left side) of the connecting plate 82. The connecting plate 82 is usually a plate-shaped structure with a certain length and width. The two swing sleeves 83 are respectively disposed at both ends of the other side (right side) of the connecting plate 82 opposite to the side where the swing shaft 81 is located.

[0092] The swing shaft 81 is used to be rotatably (e.g., through shaft hole engagement) inserted into or connected to the two first rotating sleeves 23 on the aforementioned first push member 2; the two swing rotating sleeves 83 are respectively used to be rotatably (e.g., through shaft hole engagement) connected to the second rotating sleeve 34 at the bottom of the second boot-shaped push part 32 or sleeved on the corresponding rotating shaft of the second boot-shaped push part 32;

[0093] The two swing sleeves 83 on the connector 8 form a two-point rotatable connection with the second sleeve 34, which significantly improves the motion synchronization of the second boot-shaped push part 32 under the drive of the first push part 2 and the smoothness of the overall movement; the two-point connection reduces the risk of the entire mechanism not moving smoothly due to the gap or jamming of a single rotating pair; the connector 8 integrates the swing shaft 81 and the double swing sleeves 83, and achieves rigid body connection through the connecting plate 82, which has a simple structure, good rigidity and reliable transmission.

[0094] As a preferred embodiment, see Figure 1 and Figure 4 The limiting member 4 adopts a fixed limiting plate; the limiting plate is fixedly set between the first support ear 13 and the second support ear 14 (for example, by welding, riveting, screw connection or integral molding on the inner wall of the support ear at both ends); most importantly, a gap S is formed between the bottom surface of the limiting plate (the side facing the card 0 channel) and the card inlet surface of the seat body 11; the height of the gap S is designed to be at least twice the standard thickness T of the standard card 0, that is, S≥2T;

[0095] The fixed limiting plate directly constrains the initial position of the first boot-shaped pushing part 22, preventing it from moving too far backward; the limiting plate is fixed between the lugs, and its position is stable, providing a precise and reliable initial position reference for the first boot-shaped pushing part 22; the setting of the gap S can not only ensure the rotational position constraint of the first boot-shaped pushing part 22, but also ensure the smooth passage of the standard card 0.

[0096] In a preferred embodiment, the elastic element 5 is made of any one of silicone rubber, thermoplastic polyurethane (TPU), ethylene propylene diene monomer (EPDM) rubber, or hydrogenated nitrile butadiene rubber (HNBR).

[0097] The elastic element 5 includes an elastic body that undergoes elastic deformation and stores recovery potential energy when subjected to a compressive load along its axial direction.

[0098] When the compressive load is released, the elastic body automatically recovers to its initial state based on the recovery potential energy. The outer surface of the elastic body is provided with at least one contact interface, which is configured to form physical contact with the first pusher 2.

[0099] During the process of restoring the elastic body to its initial shape, a reset driving force is applied to the first pusher 2 through the contact interface, driving the first pusher 2 to return to its initial position.

[0100] The elastic element 5 is designed to keep the first pusher 2 in a vertical position under normal conditions, ensuring the smooth entry and exit of the standard card 0. The elastic element 5 stores deformation energy when the mechanism swings. After the abnormal card 0 is pulled out, it automatically releases the stored energy to drive the first pusher 2 to reset, so that the four-bar linkage returns to the initial gap D1. No additional sensors or motors are required to reset the state, which significantly reduces energy consumption and failure rate.

[0101] Example 2

[0102] See Figure 1 , Figure 5 , Figure 9 and Figure 10 The present invention also provides a card access device, comprising:

[0103] Equipment housing 6, used to house and support the various functional modules inside the equipment;

[0104] As provided in Embodiment 1, a card-feeding mechanism capable of rejecting irregularly shaped cards 0 is provided inside the device housing 6, serving as an initial channel and screening device for the card 0 to enter the device.

[0105] The card reader 7 is located at the rear end of the card feeding mechanism, specifically downstream of the card outlet of the card feeding mechanism; it is used to receive qualified cards 0 after they have been screened by the card feeding mechanism, and to push the cards 0 forward using its internal structure and to identify information on the cards 0 (such as magnetic stripes, chips or barcodes).

[0106] The card reader 7 includes a lower card reader housing 71 and an upper card reader housing hinged to one end of the lower card reader housing 71. The hinged configuration allows the upper card reader housing 72 to be rotated upwards (or to the side) relative to the lower card reader housing 71 at a certain angle (e.g., within the range of 0-90 degrees), facilitating opening for maintenance, replacement, or clearing of paper jams. In the closed state, the upper card reader housing 72 and the lower card reader housing 71 are tightly closed.

[0107] The card reader 7 also includes a lower friction wheel 73 disposed in the lower housing 71 and an upper friction wheel 74 disposed in the upper housing 72. The upper friction wheel 74 is matched with the lower friction wheel 73 and forms a push chamber for pushing the card 0 into / out of the device.

[0108] The lower friction wheel 73 is usually driven by a drive device (e.g., a motor driven by a transmission device such as gears or belts) and can rotate around its own axis; the upper friction wheel 74 is positioned corresponding to the lower friction wheel 73.

[0109] When the upper housing 72 and lower housing 71 of the card reader are closed, the upper friction wheel 74 and the lower friction wheel 73 are vertically matched and positioned opposite each other. In the contact area (or parallel clamping area) where the two friction wheels are close together, a slotted channel for clamping and conveying the card 0 is formed, namely the push cavity. The lower friction wheel 73 and the upper friction wheel 74 rotate together, using friction to clamp the card 0 for conveying. Specifically, when the front end of the card 0 is conveyed to the entrance of the push cavity, the friction wheel rotates under the control of the drive device, clamping the card 0 in the push cavity and pushing it to a deeper position in the device (card reading position) (card insertion). After the card is read, the friction wheel rotates in the opposite direction under the control of the drive device, clamping the card 0 from the push cavity and pushing it out in the opposite direction (card ejection), finally allowing the card 0 to return to the outside of the device or a position that is easy to remove.

[0110] The card reader 7 also includes a card reading element, which is located inside the device housing 6 near the push cavity. It is equipped with a sensor module (e.g., magnetic head, chip contact, optical sensor, etc., not separately shown in the figure, which are technologies known in the art) for identifying card information (such as magnetic stripe, chip, barcode).

[0111] The user inserts card 0 into the card insertion slot 12 of the card feeding mechanism. After the card feeding mechanism completes the identification and blocking of irregularly shaped cards 0, only qualified cards 0 are allowed to pass through. Qualified cards 0 are then passed to the inlet of the push chamber of the card reader 7. At this time, the lower friction wheel 73 and the upper friction wheel 74 of the card reader 7 rotate under the drive, clamping the card 0 in the push chamber and pushing it inward to the designated card reading position. The card reading element (magnetic head, chip contact, card reading module, etc.) located at this position is activated to identify the information of the card 0. After the identification is completed, the drive device controls the upper and lower friction wheels 73 to reverse, clamping the card 0 from the push chamber and pushing it out in the opposite direction until the front end of the card 0 exits the device or returns to the card retrieval position, at which point the user can take out the card 0.

[0112] The front-mounted card feeding mechanism, equipped with a specific non-standard card rejection function, can intercept cards before they enter the card reader 7. This mechanism effectively prevents blockage, damage, or unexpected shutdown of the card reader 7 (especially the friction wheel, sensor, or card channel) caused by non-standard cards forcibly entering, protecting the core card reading components, extending the service life of the equipment, and improving the overall operational stability. At the same time, the card feeding mechanism, card reader 7, and its push chamber are designed with a clear overall structure, compact layout, and smooth collaborative operation. By modularizing and tightly connecting the card feeding screening and card pushing / reading functions, unnecessary space occupation and interface conversion are reduced, improving the internal space utilization efficiency and functional integration of the equipment.

[0113] Example 3

[0114] The present invention also provides a method for controlling the card access of a card access device as provided in Embodiment 2, the steps of which include:

[0115] S1, Standard Card 0 Processing Flow

[0116] Initial state preparation: The first pusher 2 is kept in a vertical position, forming a first gap with a width of D1 between it and the base body 11 (D1 is greater than the thickness T of the standard card 0);

[0117] Card insertion operation: When the user inserts a standard card 0, the card 0 smoothly passes through the first gap D1 along the preset card track and enters the front end of the card reader 7; at this time, the upper friction wheel 74 and the lower friction wheel 73 of the card reader 7 rotate synchronously in the forward direction under the control of the drive module, and the push cavity formed by the two clamps the card 0 and smoothly pushes it to the preset position inside the card reader 7.

[0118] Card 0 recognition: The internal sensors of the card reader 7 (such as the magnetic head, chip contacts, etc.) are activated to recognize and process the information of card 0;

[0119] Card ejection operation: After the user completes the operation (such as transaction confirmation), the control module instructs the upper and lower friction wheels 73 to rotate synchronously in opposite directions. The push chamber clamps the card 0 and retracts along the original path. The card 0 is completely ejected through the first gap D1 to the card 0 insertion port 12 outside the device;

[0120] S2, Abnormal Card 0 Interception Process

[0121] Mechanical linkage trigger: When an abnormal card 0 (such as a deformed part caused by bending, punching, or applying tape, resulting in local thickening) is inserted, its deformed part first contacts the inclined friction surface 24 of the first boot-shaped pushing part 22 at the front end of the first pusher 2; under the action of the friction force of the inclined surface, the first pusher 2 is subjected to a horizontal backward thrust and swings backward around the rotation axis.

[0122] Linkage blocking mechanism: The first pusher 2 drives the second pusher 3 to swing backward synchronously through a rigid connecting member 8 (constituting a double-rocker four-bar linkage); the second boot-shaped pushing part 32 at the bottom of the second pusher 3 presses down, reducing the second gap D2 between it and the seat body 11 to D2 < T (T is the thickness of the standard card 0), forming a physical barrier to block the card 0 from entering the channel deeply;

[0123] Reset mechanism: When the first pusher 2 swings backward, it touches the elastic member 5 synchronously, compressing it to store energy. After the abnormal card 0 is pulled out, the elastic member 5 releases the stored energy, driving the first pusher 2 and the linkage mechanism to accurately reset to the initial vertical state, restoring the first gap D1; the elastic member 5 is integrated at the end of the swinging path of the first pusher 2, providing a reset driving force through a pre-compression force, ensuring that the mechanism can still automatically reset without an external power source;

[0124] Classification and processing of abnormal cards 0:

[0125] Situation A (the deformation part is located in the middle and front part of the card 0): The deformation part triggers the double-rocker four-bar linkage before entering the propulsion chamber,联动 the second pusher 3 to reduce D2 and block the channel, and physically intercept the front end to prevent the entire card 0 from entering;

[0126] Situation B (the deformation part is located in the rear part of the card 0): The front end of the card 0 has entered the propulsion chamber, but the local thickening part causes an increase in the card insertion resistance; the control module detects the actual duration of the card 0 from the trigger card insertion signal to the in-place signal; if the card insertion duration exceeds the preset threshold (such as 3 seconds), it is determined as abnormal card insertion; immediately control the upper and lower friction wheels 73 to rotate in the reverse direction, and return the abnormal card 0 completely to the insertion slot.

[0127] The card 0 access control method provided by the present invention accurately identifies and classifies and intercepts abnormal cards 0. Specifically, for the front-end deformed card 0, the friction force of the boot-shaped pushing part is used to link the double-rocker mechanism to achieve instantaneous mechanical blockage (D2 < T) before the card 0 enters the device deeply, avoiding the intrusion of abnormal structures into the core card reading area and causing hardware damage; for the rear-end deformed card 0, a time-controlled card return mechanism is adopted, combined with the reversibility of the friction wheel drive, effectively solving the physical blockage risk of the rear-end thickened card 0, complementing the existing technology that only intercepts the front-end deformation. At the same time, the mechanical blockage interception (Situation A) and the time-controlled card return (Situation B) form a complementary defense line, completely blocking the extrusion and wear of the deformed card 0 on the friction wheel, sensor and transmission gear of the card reader 7, reducing the equipment failure rate: the inclined friction surface 24 design only responds to the physical deformation force of the abnormal card 0, without additional sensors or electronic control judgment. The present invention adopts mechanical passive triggering, with zero misjudgment and high reliability, avoiding missed interception or misinterception caused by electronic misjudgment; the elastic member 5 energy storage and reset mechanism ensures automatic restoration to the initial state after interception, eliminating the need for manual intervention and improving the continuous operation efficiency of the equipment. The reset process has no motor drive, saves energy and prolongs the life of components.

[0128] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A card receiving mechanism capable of rejecting irregularly shaped cards, characterized in that, include: A card holder is used to install a card inlet / outlet on a device. It includes a holder body, a card insertion port located at its front end, and a first lug and a second lug respectively located on both sides of the holder body. The first pusher is rotatably disposed between the two lugs, and includes a first rotating shaft, a first boot-shaped abutment extending toward the bottom of the seat body, and a first rotating sleeve disposed away from the boot-shaped abutment; the first boot-shaped abutment has an inclined friction surface on its bottom edge facing the insertion port; The second pusher, rotatably disposed between the two lugs at a distance from the second pusher, includes a second rotating shaft and a second boot-shaped abutment extending toward the bottom of the seat body; The connector has two ends on one side hinged to the first rotating sleeve, and two ends on the other side hinged to the two ends of the second boot-shaped pushing part; and the card seat, the first pusher, the second pusher and the connector constitute a double rocker four-bar linkage mechanism. A limiting member, located between the first pusher and the second pusher, is used to limit the rearward rotation angle of the first pusher; An elastic element is disposed between the limiting element and the first rotating shaft to provide a reset thrust for the first pusher; Under normal conditions, the first pusher remains vertical, and there is a first gap D1 between the bottom of the second boot-shaped pusher and the seat body, where D1 > T, allowing the standard card to pass through smoothly, and T is the card thickness; In an abnormal state, the deformable part of the card contacts the inclined friction surface and pushes the first pusher to swing backward, and drives the second pusher to swing backward through the connector, so that there is a second gap D2 between the bottom of the second boot-shaped pusher and the seat body, and D2 < T, preventing the deformable card from entering.

2. The card feeding mechanism capable of rejecting irregularly shaped cards according to claim 1, characterized in that, The first boot-shaped pushing part includes a first vertical plate and a first horizontal plate disposed on one side of the bottom of the first vertical plate, and its cross-section is L-shaped; The first horizontal plate is positioned toward the card insertion port, and the inclined friction surface is positioned at the end of the first horizontal plate facing the card insertion port.

3. A card feeding mechanism capable of rejecting irregularly shaped cards according to claim 1 or 2, characterized in that, The inclined friction surface forms a preset angle with the plane containing the card insertion direction. ; Furthermore, the inclined friction surface is provided with textures to increase friction or with friction pads to increase friction.

4. A card feeding mechanism capable of rejecting irregularly shaped cards according to claim 2, characterized in that, The first pusher includes two first rotating sleeves, which are respectively disposed at both ends of the first horizontal plate and located on the side of the first horizontal plate opposite to the card insertion port.

5. A card-feeding mechanism capable of rejecting irregularly shaped cards according to claim 1 or 2, characterized in that, The second boot-shaped pushing part includes a second vertical plate and a second rotating sleeve disposed on one side of the bottom of the second vertical plate; The connector includes a swing shaft, a connecting plate, and two swing sleeves. The swing shaft is disposed on one side of the connecting plate and is rotatably connected to the first sleeve. The two swing sleeves are respectively disposed at both ends of the other side of the connecting plate, and are used to rotatably connect with the second sleeve.

6. A card feeding mechanism capable of rejecting irregularly shaped cards according to claim 1 or 2, characterized in that, The limiting member is a limiting plate fixedly disposed between the first and second ears, and there is a gap between the bottom surface of the limiting plate and the card insertion surface of the base body, and the gap is at least twice the thickness of the card.

7. A card access device, characterized in that, The device includes a housing, a card feeding mechanism as described in any one of claims 1-6 disposed within the housing, and a card reader disposed at the rear end of the card feeding mechanism for identifying card information. The card reader includes a lower card reader housing and an upper card reader housing hinged to one end of the lower card reader housing, as well as a lower friction wheel disposed in the lower card reader housing and an upper friction wheel disposed in the upper card reader housing; the upper friction wheel and the lower friction wheel are matched and configured to form a push chamber for pushing the card into / out of the device.

8. A method for controlling the card entry and exit of a card access device as described in claim 7, characterized in that, The steps include: S1. When a standard card is inserted, the first pusher remains vertical. The standard card enters the card reader through the first gap D1. The upper and lower friction wheels rotate in the forward direction, pushing the card into the card reader for card information recognition. When the user finishes the operation, the upper and lower friction wheels are controlled to rotate in the reverse direction, pushing the card out of the card reader and then out of the card insertion port through the first gap D1. S2. When the abnormal card enters, the deformable part of the card contacts the inclined friction surface of the first boot-shaped pushing part. Under the action of friction, the first pusher is pushed to swing backward, and the second pusher is driven to swing backward through the connecting piece. The second gap D2 between the bottom of the second boot-shaped pusher and the seat body prevents the deformable card from entering.

9. The card entry / exit control method according to claim 8, characterized in that, In step S2, when the deformable part of the abnormal card is located at the front end of the card and the front end of the abnormal card has not entered the push cavity, the deformable part directly triggers the dual rocker four-bar linkage to prevent the card from entering. When the deformable part of the abnormal card is located at the rear end of the card, and the front end of the abnormal card has entered the feeding chamber, and the card feeding time exceeds the preset time, the upper friction wheel and the lower friction wheel are controlled to rotate in opposite directions, so that the abnormal card is removed from the device.

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