Card reading device

Abstract

This utility model discloses a card reader device, relating to the field of card reader technology. The card reader device includes a base, a first limiting component, a recognition sensor, and a second limiting component. The base forms a cavity and also has a slot communicating with the cavity. The slot is used to hold a card. The recognition sensor is located on the side wall of the slot and is used to acquire image information of the card along a first direction. Along the depth direction of the slot, the first limiting component and the second limiting component are spaced apart on the side wall of the slot, with the first limiting component located on the side of the slot closer to the opening and the second limiting component located on the side of the slot away from the opening. Both the first and second limiting components are used to abut and limit contact with the opposite sides of the card. The technical solution provided by this utility model aims to improve the stability of the card after it is inserted into the slot, thereby obtaining accurate card information.

Description

Technical Field

[0001] This utility model relates to the field of card reader technology, and in particular to a card reader. Background Technology

[0002] Some identification cards typically have multiple lines of information printed on their surface, such as travel permits to Hong Kong, Macau, and overseas identity documents. This information is crucial for many applications, including identity verification and immigration management. To identify this information, specialized card readers are used. These readers are equipped with dedicated slots into which users can insert their cards directly. Inside the slot, a recognition sensor, such as a CIS (Contact Image Sensor), is installed. During card insertion, the CIS scans the information on the card surface line by line to obtain the information from the card.

[0003] To further enhance the versatility of card readers and enable them to accommodate cards of different thicknesses, the width of the slot is set to be slightly larger than the thickness of the card. At the same time, two rollers that can move relative to each other are installed at the slot opening. When the card passes between the two rollers, the two rollers will act as abutment and limit the card, preventing the card from tilting at the slot opening. This allows it to accommodate cards of different thicknesses and ensures the stability of the card when it is first inserted.

[0004] However, existing card readers only limit the card's position at the slot opening. As the card is inserted, its length increases within the slot. Furthermore, during insertion, the card's material flexibility and external forces (such as hand tremors) can easily cause slight wobble at the bottom of the card within the slot. Since a CIS (Card Reader System) needs to maintain a constant distance from the card when reading its surface information line by line, even slight wobble can distort or blur the image recognized by the CIS, resulting in inaccurate card information. Utility Model Content

[0005] The main purpose of this invention is to provide a card reading device that improves the stability of the card after it is inserted into the slot, so as to obtain accurate card information.

[0006] To achieve the above objectives, this utility model proposes a card reading device, which includes a base, a first limiting component, an identification sensor, and a second limiting component. The base is provided with a cavity and a slot, which communicates with the cavity and is used to hold a card. The identification sensor is located on the side wall of the slot and is used to acquire image information of the card along a first direction.

[0007] Along the depth direction of the slot, the first limiting component and the second limiting component are spaced apart on the side wall of the slot, with the first limiting component located on the side of the slot closer to the opening and the second limiting component located on the side of the slot away from the opening.

[0008] Both the first limiting component and the second limiting component are used to abut and limit the card to its opposite sides.

[0009] In one embodiment, the slot has a first sidewall and a second sidewall disposed opposite to each other, the first sidewall and the second sidewall extending along the length direction of the slot;

[0010] The second limiting component includes a first sidewall and a limiting member disposed on the second sidewall. The limiting member protrudes from the surface of the second sidewall and is movable relative to the first sidewall. The first sidewall and the limiting member abut against and limit the card along the first direction.

[0011] In one embodiment, the second sidewall has a movable hole, the limiting member is a spring sheet, one side of the spring sheet is connected to the inner wall of the movable hole, the other side of the spring sheet is movably disposed in the movable hole, and the spring sheet part protrudes from the surface of the second sidewall.

[0012] In one embodiment, the first sidewall is provided with a receiving groove, and a plurality of limiting protrusions are sequentially provided in the receiving groove along the second direction. The plurality of limiting protrusions cooperate to form an abutment surface facing the second sidewall, and the spring sheet abuts the card against the abutment surface along the first direction.

[0013] Wherein, the first direction and the second direction are perpendicular to each other.

[0014] In one embodiment, the spring is disposed opposite to at least one of the limiting protrusions.

[0015] In one embodiment, the spring includes a connecting portion, an abutting portion, and a movable portion connected in sequence. The side of the connecting portion away from the abutting portion is connected to the inner wall of the movable hole. The abutting portion has a movable surface protruding from the surface of the second sidewall. The movable surface is parallel to the surface of the first sidewall and is used to abut against the card. The movable portion is set at an angle to the abutting portion, and the side of the movable portion away from the abutting portion faces away from the first sidewall.

[0016] In one embodiment, both the first limiting component and the second limiting component include two, and the two first limiting components and the two second limiting components are symmetrically arranged on both sides of the slot.

[0017] In one embodiment, each of the limiting components is offset from the corresponding second limiting component along the depth direction of the slot.

[0018] In one embodiment, the identification sensor is disposed between the first limiting component and the second limiting component along the depth direction of the slot.

[0019] In one embodiment, the first limiting component includes:

[0020] A contact wheel, rotatably disposed within the cavity and positioned near the opening of the slot, the contact wheel portion protruding from the sidewall surface of the slot; and

[0021] A floating wheel, which is rotatably disposed within the cavity and is capable of moving relative to the contact wheel along the first direction;

[0022] The contact wheel and the floating wheel are used to abut and limit the card along the first direction.

[0023] The technical solution of this utility model involves setting a first limiting component and a second limiting component on the side wall of the slot, with the first and second limiting components spaced apart along the depth direction of the slot. This allows the card to be stopped and restrained from two different positions, while a recognition sensor on the side wall of the slot can acquire image information of the card. When the card is inserted into the slot, the first limiting component approaches the slot opening, initially limiting the card and preventing it from tilting during insertion. As the card is further inserted, the second limiting component, deeper within the slot, again limits the card's position, further constraining its position. This design makes the card more stable throughout the entire insertion process, preventing the bottom of the card from easily shaking, thus enabling accurate card information acquisition. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the card reader provided by this utility model;

[0026] Figure 2 This is a structural schematic diagram of a card reader from another perspective;

[0027] Figure 3 for Figure 2Schematic diagram of the structure of section AA in the middle;

[0028] Figure 4 An exploded view of the card reader device;

[0029] Figure 5 This is a schematic diagram of the support base in a card reader device;

[0030] Figure 6 This is a structural diagram of the support base in a card reader device.

[0031] Figure 7 This is a structural schematic diagram of the support base in a card reader from another perspective.

[0032] Figure 8 This is a structural schematic diagram of the support base in a card reader, taken from another perspective.

[0033] Figure 9 for Figure 8 Schematic diagram of the structure of the middle BB section;

[0034] Figure 10 An exploded view of the support base in the card reader device;

[0035] Figure 11 This is a schematic diagram of the structure of the second base in a card reader device;

[0036] Figure 12 This is a schematic diagram of the structure of the first base in a card reader device.

[0037] Explanation of icon numbers:

[0038] 100. Card reader; 1. Base; 11. Outer shell; 111. Cavity; 112. Slot; 113. Wiring port; 114. Foot pad; 115. Top cover; 116. Base; 12. Support seat; 121. First seat body; 1211. First side wall; 1212. Second rotating groove; 1213. Receiving groove; 1214. Limiting protrusion; 1215. Abutment surface; 122. Second seat body; 1220. Second limiting component; 1221. Second side wall; 1222. First rotating groove; 1223. Limiting element; 1224. Spring; 12 25. Movable hole; 1226. Connecting part; 1227. Abutting part; 1228. Movable part; 1229. Movable surface; 123. Through hole; 13. Slot; 2. First limiting assembly; 21. Floating wheel; 22. Contact wheel; 221. First rotating shaft; 3. Code disk; 31. Second rotating shaft; 4. Gear mechanism; 41. First connecting wheel; 42. Second connecting wheel; 43. Transmission wheel assembly; 431. First transmission wheel; 432. Second transmission wheel; 5. Cover plate; 51. Mounting space; 6. Heat sink; 7. Circuit board; 9. Identification sensor.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions 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 those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] Some identification cards typically have multiple lines of information printed on their surface, such as travel permits to Hong Kong, Macau, and overseas identity documents. This information is crucial for many applications, including identity verification and immigration management. To identify this information, specialized card readers are used. These readers are equipped with dedicated slots into which users can insert their cards directly. Inside the slot, a recognition sensor, such as a CIS (Contact Image Sensor), is installed. During card insertion, the CIS scans the information on the card surface line by line to obtain the information from the card.

[0044] To further enhance the versatility of card readers and enable them to accommodate cards of different thicknesses, the width of the slot is set to be slightly larger than the thickness of the card. At the same time, two rollers that can move relative to each other are installed at the slot opening. When the card passes between the two rollers, the two rollers will act as abutment and limit the card, preventing the card from tilting at the slot opening. This allows it to accommodate cards of different thicknesses and ensures the stability of the card when it is first inserted.

[0045] However, existing card readers only restrict the card at the slot opening. Once the bottom of the card is inserted into the slot, during insertion, the card's material flexibility and external forces (such as hand tremors) can easily cause slight movement of the bottom within the slot. Since a CIS (Card Reader System) needs to maintain a constant distance from the card when reading its surface information line by line, even slight movement can lead to distorted or unclear images, preventing the acquisition of accurate card information.

[0046] The main purpose of this invention is to provide a card reader 100, which aims to improve the stability of the card after it is inserted into the slot 13, so as to obtain accurate card information.

[0047] Please see Figures 1 to 12 In one embodiment of this utility model, the card reader 100 includes a base 1, a first limiting component 2, an identification sensor 9, and a second limiting component 1220. The base 1 surrounds a cavity 111, and the base 1 also has a slot 13, which communicates with the cavity 111 and is used to hold a card. The identification sensor 9 is disposed on the side wall of the slot 13 and is used to acquire image information of the card along a first direction. Along the depth direction of the slot 13, the first limiting component 2 and the second limiting component 1220 are spaced apart on the side wall of the slot 13, with the first limiting component 2 located on the side of the slot 13 closer to the opening 112, and the second limiting component 1220 located on the side of the slot 13 away from the opening 112. The first limiting component 2 and the second limiting component 1220 are movable along the first direction and are both used to abut and limit the card against the opposite sides.

[0048] First, it should be noted that the thickness of the card is generally no more than 1 mm, therefore, the width of the slot 13 can be set between 0.7 mm and 1.2 mm. Also, when the card is inserted into the slot 13, the first direction is perpendicular to the plane on which the card is located.

[0049] In this embodiment, the base 1 serves as the structural foundation, and the cavity 111 formed inside it can be used to install other components. The slot 13 is provided on the surface of the base 1 so that the card can be inserted into the base 1 through the slot 13. The first limiting component 2 and the second limiting component 1220 can limit the card from a first direction.

[0050] Understandably, by setting a first limiting component 2 and a second limiting component 1220 on the side wall of slot 13, and by spacing the first limiting component 2 and the second limiting component 1220 along the depth direction of slot 13, the card can be stopped and restrained from two different positions. Simultaneously, the recognition sensor 9 on the side wall of slot 13 can acquire image information of the card. When the card is inserted into slot 13, the first limiting component 2 approaches the slot opening 112, initially limiting the card to prevent it from tilting during insertion. As the card is further inserted, the second limiting component 1220 further limits the card's position at a deeper depth in slot 13. This arrangement makes the card more stable throughout the insertion process into slot 13, preventing the bottom of the card from easily shaking, thus enabling accurate card information to be obtained.

[0051] Optionally, the identification sensor 9 can be a CIS, i.e., a contact image sensor.

[0052] In one implementation, please refer to Figure 2 , Figure 3 and Figure 8 The first limiting component 2 includes a contact wheel 22 and a floating wheel 21. The contact wheel 22 is rotatably disposed within the cavity 111 and is positioned close to the slot 112 of the slot 13, with a portion of the contact wheel 22 protruding from the side wall surface of the slot 13. The floating wheel 21 is rotatably disposed within the cavity 111 and is capable of moving relative to the contact wheel 22 along a first direction. The contact wheel 22 and the floating wheel 21 are used to abut and limit the card along the first direction.

[0053] In this embodiment, the first limiting component 2 further includes an elastic element. The two sides of the elastic element abut against the inner walls of the floating wheel 21 and the base 1, respectively, so that the floating wheel 21 is initially in close contact with the contact wheel 22, or the floating wheel 21 and the contact wheel 22 are initially close together, with the distance between them being less than the thickness of the card. This allows the elastic element to be compressed when the card is inserted between the floating wheel 21 and the contact wheel 22. Through the elastic deformation of the elastic element, the floating wheel 21 remains in contact with the card, and the other side of the card abuts against the contact wheel 22, thus accommodating cards of different thicknesses.

[0054] Understandably, the floating wheel 21 and the contact wheel 22 are rotatably disposed in the cavity 111, so that when the card is inserted into the slot 13, the friction between the card and the first limiting component 2 is sliding friction, thereby reducing the friction and reducing the wear on the card.

[0055] Alternatively, the floating wheel 21 and the contact wheel 22 may not be provided. Instead, the card can be stopped by the elastic element alone. In this case, elastic elements can be provided on the two opposite side walls of the slot 13. After the card passes between the two elastic elements, the two elastic elements are compressed and abut against the side wall of the card.

[0056] Optionally, in order to further ensure the stability of the floating wheel 21 when it moves, a sliding groove can be provided on the base 1. The sliding groove extends along the first direction, and the floating wheel 21 is slidably disposed in the sliding groove, thereby limiting the floating wheel 21 by the side wall of the sliding groove and ensuring the stability when it moves.

[0057] Alternatively, the second limiting component 1220 can also be configured as a structure in which the contact wheel 22 and the floating wheel 21 cooperate.

[0058] In one implementation, please refer to Figure 9 , Figure 11 and Figure 12 The slot 13 has a first sidewall 1211 and a second sidewall 1221 disposed opposite to each other, the first sidewall 1211 and the second sidewall 1221 extending along the length direction of the slot 13; the second limiting assembly 1220 includes the first sidewall 1211 and a limiting member 1223 disposed on the second sidewall 1221, the limiting member 1223 protruding from the surface of the second sidewall 1221 and being movable relative to the first sidewall 1211, the first sidewall 1211 and the limiting member 1223 abutting and limiting the card along a first direction.

[0059] In this embodiment, the second limiting component 1220 includes a limiting member 1223 on the first sidewall 1211 and the second sidewall 1221. The limiting member 1223 protrudes from the surface of the second sidewall 1221, has a certain elasticity, and can move relative to the first sidewall 1211 after being squeezed by a card. When the card is inserted, due to the mobility of the limiting member 1223, the limiting member 1223 can press the card against the first sidewall 1211 in a first direction, so that the second limiting component 1220 can adapt to cards of different thicknesses and ensure that the bottom of the card can remain stable.

[0060] Optionally, the limiting element 1223 can be a plastic protrusion or a rubber pad, etc. Plastic protrusions have low cost and good wear resistance; rubber pads can provide better anti-slip and cushioning effects, reducing wear on the card during insertion.

[0061] In one implementation, please refer to Figure 9 and Figure 11The second sidewall 1221 has a movable hole 1225. The limiting member 1223 is a spring piece 1224. One side of the spring piece 1224 is connected to the inner wall of the movable hole 1225, and the other side of the spring piece 1224 is movably disposed in the movable hole 1225. Part of the spring piece 1224 protrudes from the surface of the second sidewall 1221.

[0062] Understandably, one end of the spring 1224 is fixed to the inner wall of the movable hole 1225, while the other end can move within the movable hole 1225. This allows the spring 1224 to provide elastic support when the card is inserted, while the movable hole 1225 provides clearance space, allowing the spring 1224 to move along the first direction to adapt to changes in the card's thickness.

[0063] Optionally, the spring 1224 can be integrally formed with the second sidewall 1221 to enhance structural strength.

[0064] In one implementation, please refer to Figure 10 and Figure 12 The first sidewall 1211 has a receiving groove 1213, and a plurality of limiting protrusions 1214 are arranged sequentially along the second direction in the receiving groove 1213. The plurality of limiting protrusions 1214 cooperate to form an abutment surface 1215 facing the second sidewall 1221. The spring piece 1224 abuts the card against the abutment surface 1215 along the first direction. The first direction and the second direction are perpendicular to each other.

[0065] In this embodiment, a receiving groove 1213 is provided on the first sidewall 1211, and a plurality of limiting protrusions 1214 are arranged in the receiving groove 1213 along the second direction. It should be noted that the second direction is parallel to the length direction of the slot 13. The plurality of limiting protrusions 1214 together form an abutment surface 1215 facing the second sidewall 1221. When the card is inserted, the spring 1224 abuts the card against the abutment surface 1215 along the first direction.

[0066] Optionally, the limiting protrusion 1214 extends along the depth direction of the slot 13, and the limiting protrusion 1214 near the slot 112 forms an arc-shaped guide surface. The guide surface is connected to the abutment surface 1215, so that when the card is inserted, even if the bottom of the card is tilted to a certain extent, it can continue to be inserted along the guide surface until it abuts against the abutment surface 1215, thereby preventing the bottom of the card from tilting.

[0067] In one implementation, please refer to Figure 9 and Figure 12 The spring piece 1224 is disposed opposite to at least one limiting protrusion 1214.

[0068] In this embodiment, the spring 1224 can cooperate with the limiting protrusion 1214 to abut and limit the card when it is inserted. The elasticity of the spring 1224 can provide a gentle limiting force, while the limiting protrusion 1214 can provide a stable support point. The two work together to ensure that the bottom of the card can be stably held in the preset position after insertion.

[0069] Understandably, if the spring 1224 is set exactly in the area between the two limiting protrusions 1214, then the area of ​​the card facing away from the spring 1224 lacks support and can only rely on the forming abutment surface 1215 to support the card, resulting in slightly poor stability.

[0070] Optionally, in order to further improve the stability of the limit, the number of limit protrusions 1214 corresponding to the spring piece 1224 can be increased.

[0071] In one implementation, please refer to Figure 9 and Figure 11 The spring 1224 includes a connecting part 1226, an abutting part 1227, and a movable part 1228 connected in sequence. The side of the connecting part 1226 away from the abutting part 1227 is connected to the inner wall of the movable hole 1225. The abutting part 1227 has a movable surface 1229 protruding from the surface of the second side wall 1221. The movable surface 1229 is parallel to the surface of the first side wall 1211 and is used to abut against the card. The movable part 1228 is set at an angle to the abutting part 1227, and the side of the movable part 1228 away from the abutting part 1227 is set away from the first side wall 1211.

[0072] In this embodiment, the spring 1224 includes a connecting portion 1226, an abutting portion 1227, and a movable portion 1228. The connecting portion 1226 is fixed to the inner wall of the movable hole 1225. The abutting portion 1227 has a movable surface 1229 facing the abutting surface 1215. The movable surface 1229 protrudes from the surface of the second side wall 1221 and is parallel to the surface of the first side wall 1211, for abutting against one side wall of the card. The movable portion 1228 is set at an angle to the abutting portion 1227, and the side of the movable portion 1228 away from the abutting portion 1227 faces away from the first side wall 1211.

[0073] Understandably, the distance between the side of the movable part 1228 closest to the slot 112 and the second side wall 1221 is less than the distance between the other side of the movable part 1228 and the second side wall 1221. At this time, the movable part 1228 can also play a guiding role, so that the card can abut against the movable surface 1229 during the insertion process.

[0074] In one implementation, please refer to Figure 9 , Figure 11 and Figure 12The first limiting component 2 and the second limiting component 1220 each include two, and the two first limiting components 2 and the two second limiting components 1220 are symmetrically arranged on both sides of the slot 13.

[0075] In this embodiment, there are two of each of the spring 1224, the contact wheel 22 and the floating wheel 21, which are symmetrically arranged on both sides of the slot 13, so that the card can be subjected to a uniform limiting force when inserted, thereby further improving stability.

[0076] In one implementation, please refer to Figure 11 Along the depth direction of slot 13, each limiting component is offset from the corresponding second limiting component 1220.

[0077] Understandably, by staggering the positions, the first limiting component 2 and the second limiting component 1220 can limit the card at different positions along the second direction, thus enhancing the limiting accuracy. If the first limiting component 2 and the second limiting component 1220 are coaxially arranged on the same side of the slot 13 along the depth direction of the slot 13, interference may occur between them. For example, the elastic deformation of the elastic element connected to the floating wheel 21 may interfere with the elastic deformation of the spring piece 1224, thereby affecting the limiting accuracy.

[0078] In one implementation, please refer to Figure 10 and Figure 12 Along the depth direction of slot 13, the identification sensor 9 is located between the first limiting component 2 and the second limiting component 1220.

[0079] In this embodiment, along the depth direction of the slot 13, the identification sensor 9 is installed between the first limiting component 2 and the second limiting component 1220, and is located on the first side wall 1211. At the same time, the distance between the abutment surface 1215 and the second side wall 1221 is not less than the distance between the identification sensor 9 and the second side wall 1221. This allows the identification sensor 9 to focus the image on the card surface during the card insertion process, facilitating identification, and the card will not put excessive pressure on the identification sensor 9.

[0080] Understandably, to further enhance the stability of the recognition sensor 9 during recognition, the distance between the first limiting component 2 and the second limiting component 1220 can be adjusted so that only after the bottom of the card abuts against the second limiting component 1220 does the area containing information on the card enter the recognition area of ​​the recognition sensor 9 for recognition. At this point, when the card is further inserted into the slot 13, the card is simultaneously abutted and limited by both the first limiting component 2 and the second limiting component 1220, resulting in better stability and ensuring a clear image recognized by the recognition sensor 9. In this case, the area containing information on the card can be positioned in the middle of the card.

[0081] Optionally, the identification sensor 9 can also be located on the side of the second limiting component 1211 away from the first limiting component 2, while a certain gap is provided between the first limiting component 2 and the second limiting component 1220. That is, before the card enters the identification area of ​​the identification sensor 9, it is simultaneously stopped by the first limiting component 2 and the second limiting component 1220. In this case, the area on the card containing information can be located on the side of the card closer to the bottom of the slot 13.

[0082] In existing technology, when a card is inserted, the card contacts the contact wheel 22, causing the contact wheel 22 to rotate. The contact wheel 22 is connected to the code disk 3 via a transmission belt, which transmits the rotation of the contact wheel 22 to the code disk 3, causing the code disk 3 to rotate accordingly. The card reader 100 can detect the rotational speed of the code disk 3 through a sensor, and then calculate the card insertion speed. By combining the card insertion speed with the sensor data from CIS recognition, the card reader 100 can more accurately control the recognition process and reduce recognition errors.

[0083] When the contact wheel 22 rotates, its edge generates a tangential force on the drive belt. The static friction between the drive belt and the contact wheel 22 balances the tangential force, causing the drive belt to rotate with the contact wheel 22. When the tangential force on the contact wheel 22 exceeds the maximum value of the static friction, the drive belt begins to slip relative to the contact wheel 22, i.e., slippage occurs. This causes the rotation speed of the code disk 3 to be inconsistent with the actual rotation speed of the contact wheel 22, resulting in a deviation in the card insertion speed calculated by the card reader 100, thus affecting the accuracy of card information recognition.

[0084] To address the above problems, in one embodiment, please refer to... Figure 6 The card reader 100 also includes a code disk 3 and a gear mechanism 4. The contact wheel 22 is rotatably disposed in the cavity 111, and part of the contact wheel 22 protrudes from the side wall of the slot 13. The code disk 3 is rotatably disposed in the cavity 111 and is spaced apart from the contact wheel 22. The code disk 3 is used to detect the insertion speed of the card. The gear mechanism 4 is disposed in the cavity 111 and is connected to the contact wheel 22 and the code disk 3 respectively, so that the contact wheel 22 and the code disk 3 are driven by gears.

[0085] In this embodiment, the contact wheel 22 is installed inside the cavity 111, and a portion of the contact wheel 22 protrudes from the surface of the second sidewall 1221. The code disk 3 is installed inside the cavity 111, spaced apart from the contact wheel 22, and is used to detect the insertion speed of the card. The gear mechanism 4 is installed inside the cavity 111, connecting the contact wheel 22 and the code disk 3, so that the two are driven by gears.

[0086] Understandably, by making the contact wheel 22 protrude from the side wall of the slot 13, the insertion of a card causes the contact wheel 22 to rotate. The contact wheel 22 is then connected to the code disk 3 via a gear mechanism 4, which in turn causes the code disk 3 to rotate. This design, through gear transmission, avoids slippage, enhances the reliability of the transmission between the contact wheel 22 and the code disk 3, ensures that the rotational speed of the code disk 3 matches the actual rotational speed of the contact wheel 22, guarantees the accuracy of the calculated card insertion speed, and thus improves the accuracy of card information recognition.

[0087] Optionally, the code disk 3 can be of various types, such as an optical code disk 3, a magnetic code disk 3, or a capacitive code disk 3. The optical code disk 3 detects the card insertion speed through a grating and a photoelectric sensor, featuring high precision and fast response; the magnetic code disk 3 detects the speed through magnetic materials and a Hall sensor, suitable for scenarios requiring high reliability; the capacitive code disk 3 detects the speed through changes in capacitance, exhibiting good anti-interference performance.

[0088] In one implementation, please refer to Figure 4 and Figure 5 The contact wheel 22 includes two parts, which are respectively disposed on both sides of the slot 13. One of the contact wheels 22 is connected to the code disk 3 via gear transmission.

[0089] In this embodiment, two contact wheels 22 respectively limit the movement of the card on both sides, ensuring that the card remains stable during insertion and does not shift or wobble. Simultaneously, through gear transmission, the code disk 3 can accurately detect the card insertion speed.

[0090] In one implementation, please refer to Figure 6 and Figure 7 The gear mechanism 4 includes a first connecting wheel 41, a second connecting wheel 42, and a transmission wheel assembly 43. The first connecting wheel 41 is coaxially arranged with the contact wheel 22, and the first connecting wheel 41 and the contact wheel 22 can rotate synchronously. The second connecting wheel 42 is coaxially arranged with the code disk 3, and the second connecting wheel 42 and the code disk 3 can rotate synchronously. The transmission wheel assembly 43 is meshed with the first connecting wheel 41 and the second connecting wheel 42 respectively.

[0091] In this embodiment, the first connecting wheel 41 and the contact path are connected by the first rotating shaft 221, and the second connecting wheel 42 and the code disk 3 are connected by the second rotating shaft 31, thereby achieving synchronous rotation. The transmission wheel assembly 43 is meshed with the first connecting wheel 41 and the second connecting wheel 42 respectively to realize gear transmission between the contact wheel 22 and the code disk 3.

[0092] In one implementation, please refer to Figure 6 and Figure 7The transmission wheel assembly 43 includes a first transmission wheel 431 and a second transmission wheel 432, and the first connecting wheel 41, the first transmission wheel 431, the second transmission wheel 432 and the second connecting wheel 42 are sequentially meshed together.

[0093] In this embodiment, a two-stage transmission structure is provided between the first connecting wheel 41 and the second connecting wheel 42, and transmission is performed through the first transmission wheel 431 and the second transmission wheel 432, and the first transmission wheel 431 and the second transmission wheel 432 are the same size.

[0094] It is understandable that by setting the first transmission wheel 431 and the second transmission wheel 432 for transmission, sufficient space can be reserved between the code disk 3 and the contact wheel 22 along the depth direction of the slot 13 to avoid interference between the two. At the same time, it can also prevent too many transmission stages, which would cause energy loss and cause a speed deviation between the code disk 3 and the contact wheel 22.

[0095] In one implementation, please refer to Figure 7 The radius of the first connecting wheel 41 is smaller than the radius of the second connecting wheel 42.

[0096] Understandably, since the angular velocities of the first connecting wheel 41 and the contact wheel 22 are the same, the linear velocities of the first connecting wheel 41 and the second connecting wheel 42 are the same, and the angular velocities of the second connecting wheel 42 and the code disk 3 are the same, when the radius of the first connecting wheel 41 is smaller than the radius of the second connecting wheel 42, the angular velocity of the code disk 3 is smaller than the angular velocity of the contact wheel 22, thereby reducing the rotational speed of the code disk 3 and making it easier for the sensor to detect the rotational speed of the code disk 3.

[0097] In one implementation, please refer to Figure 1 , Figure 4 and Figure 5 The base 1 includes a shell 11 and a support base 12. The shell 11 encloses a cavity 111. The support base 12 is disposed in the cavity 111. The top wall of the shell 11 has a slot 112. The support base 12 has a through hole 123. The through hole 123 communicates with the slot 112 and cooperates to form a slot 13. The contact wheel 22, the encoder 3 and the gear mechanism 4 are all rotatably disposed on the support base 12.

[0098] In this embodiment, the outer shell 11 encloses a cavity 111, and the support base 12 is installed inside the cavity 111. The top wall of the outer shell 11 has a slot 112, and the support base 12 has a through hole 123. The through hole 123 communicates with the slot 112, together forming a slot 13. The contact wheel 22, the encoder 3, and the gear mechanism 4 are all mounted on the support base 12, which provides a stable mounting platform for these components.

[0099] Optionally, the housing 11 includes a detachably connected base 116 and a top cover 115, which together form a cavity 111. The base 116 and the top cover 115 are connected by bolts to facilitate the installation of the support base 12.

[0100] Optionally, the side wall of the base 116 is provided with a wiring port 113, and the circuit board 7 on the support 12 is electrically connected to the power supply or other devices through the wiring port 113.

[0101] Optionally, the base 116 has feet 114 on its bottom to maintain stability when placed.

[0102] In one implementation, please refer to Figures 10 to 12 The support base 12 includes a first base 121 and a second base 122 that are connected to each other, and the first base 121 and the second base 122 enclose a through hole 123.

[0103] Understandably, the first base 121 and the second base 122 can be connected by bolts for easy installation.

[0104] Alternatively, the first seat 121 and the second seat 122 can also be integrally formed.

[0105] In one implementation, please refer to Figure 6 and Figure 7 The first connecting wheel 41, the first transmission wheel 431, the second transmission wheel 432, and the second connecting wheel 42 are all rotatably mounted on the same side wall of the support base 12. The central axis of the first connecting wheel 41 and the central axis of the second connecting wheel 42 are located in the same plane, while the central axis of the first transmission wheel 431 and the central axis of the second transmission wheel 432 are located on opposite sides of the plane.

[0106] In this embodiment, the central axis of the first connecting wheel 41 and the central axis of the second connecting wheel 42 are located in the same plane, while the central axis of the first transmission wheel 431 and the central axis of the second transmission wheel 432 are located on opposite sides of the same plane. It can be understood that by mounting all gears on the same side wall of the support base 12, the internal structure of the card reader 100 is made more compact, improving the overall performance of the device. At the same time, this layout also makes the meshing between the gears tighter, reducing energy loss during transmission and improving transmission efficiency.

[0107] In one implementation, please refer to Figure 5 and Figure 6 The card reader 100 also includes a cover plate 5, which is disposed on the side wall of the support base 12 and has a gap between it and the side wall of the support base 12 to form an installation space 51. The first transmission wheel 431, the second transmission wheel 432 and the second connecting wheel 42 are all confined within the installation space 51.

[0108] In this embodiment, the cover plate 5 is installed on the side wall of the support base 12, and an installation space 51 is formed between the cover plate 5 and the side wall of the support base 12. This arrangement allows the various components of the gear mechanism 4 to be better protected. On the other hand, the cover plate 5 and the side wall of the support base 12 can limit the first transmission wheel 431, the second transmission wheel 432 and the second connecting wheel 42 in the second direction, ensuring the stability during operation.

[0109] In one implementation, please refer to Figure 5 and Figure 6 The support base 12 is also provided with a first rotating groove 1222 communicating with the through hole 123. The card reader 100 also includes a first rotating shaft 221 rotatably disposed in the first rotating groove 1222. The extension direction of the first rotating shaft 221 is consistent with the length direction of the through hole 123. A contact wheel 22 is sleeved on the first rotating shaft 221. The side of the first rotating shaft 221 away from the contact wheel 22 protrudes from the side wall of the support base 12 and is connected to the first connecting wheel 41. The support base 12 is also provided with a second rotating groove 1212 communicating with the through hole 123. The card reader 100 also includes a second rotating shaft 31 rotatably disposed in the second rotating groove 1212. The extension direction of the second rotating shaft 31 is consistent with the length direction of the through hole 123. A code disk 3 is sleeved on the second rotating shaft 31. The side of the second rotating shaft 31 away from the code disk 3 protrudes from the side wall of the support base 12 and is connected to the second connecting wheel 42.

[0110] In this embodiment, the support base 12 is provided with a first rotating groove 1222 and a second rotating groove 1212, which are respectively connected to the through hole 123. A first rotating shaft 221 is installed in the first rotating groove 1222, and a contact wheel 22 is sleeved on the first rotating shaft 221. One side of the first rotating shaft 221 protrudes from the side wall of the support base 12 and is connected to the first connecting wheel 41. A second rotating shaft 31 is installed in the second rotating groove 1212, and an encoder 3 is sleeved on the second rotating shaft 31. One side of the second rotating shaft 31 protrudes from the side wall of the support base 12 and is connected to the second connecting wheel 42.

[0111] In one implementation, please refer to Figure 5 and Figure 6 The card reader 100 also includes a heat sink 6, which is connected to the support base 12 and the bottom wall of the housing 11.

[0112] In this embodiment, the heat sink 6 is installed between the support base 12 and the bottom wall of the housing 11 and is connected to the circuit board 7 on the support base 12. It can transfer the heat of the circuit board 7 to the bottom wall of the housing 11 and dissipate it into the environment through the housing 11, thereby reducing the internal temperature of the card reader 100.

[0113] Optionally, clearance holes can also be provided on the heat sink 6 for the chips on the circuit board 7 to pass through.

[0114] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A card reader, characterized in that, The card reader includes a base, a first limiting component, an identification sensor, and a second limiting component. The base is provided with a cavity and a slot. The slot communicates with the cavity and is used to hold a card. The identification sensor is located on the side wall of the slot and is used to acquire image information of the card along a first direction. Along the depth direction of the slot, the first limiting component and the second limiting component are spaced apart on the side wall of the slot, with the first limiting component located on the side of the slot closer to the opening and the second limiting component located on the side of the slot away from the opening. Both the first limiting component and the second limiting component are used to abut and limit the card to its opposite sides.

2. The card reader as described in claim 1, characterized in that, The slot has a first sidewall and a second sidewall disposed opposite to each other, the first sidewall and the second sidewall extending along the length direction of the slot; The second limiting component includes a first sidewall and a limiting member disposed on the second sidewall. The limiting member protrudes from the surface of the second sidewall and is movable relative to the first sidewall. The first sidewall and the limiting member abut against and limit the card along the first direction.

3. The card reader as described in claim 2, characterized in that, The second sidewall has a movable hole, and the limiting member is a spring piece. One side of the spring piece is connected to the inner wall of the movable hole, and the other side of the spring piece is movably disposed in the movable hole. The spring piece part protrudes from the surface of the second sidewall.

4. The card reader as described in claim 3, characterized in that, The first sidewall is provided with a receiving groove, and a plurality of limiting protrusions are arranged sequentially in the receiving groove along the second direction. The plurality of limiting protrusions cooperate to form an abutting surface facing the second sidewall, and the spring sheet abuts the card against the abutting surface along the first direction. Wherein, the first direction and the second direction are perpendicular to each other.

5. The card reading apparatus of claim 4, wherein The spring sheet is disposed opposite to at least one of the limiting protrusions.

6. The card reading apparatus of claim 3, wherein The spring includes a connecting part, an abutting part, and a movable part connected in sequence. The side of the connecting part away from the abutting part is connected to the inner wall of the movable hole. The abutting part has a movable surface protruding from the surface of the second sidewall. The movable surface is parallel to the surface of the first sidewall and is used to abut against the card. The movable part is set at an angle to the abutting part, and the side of the movable part away from the abutting part faces away from the first sidewall.

7. The card reader as described in any one of claims 1 to 6, characterized in that, The first limiting component and the second limiting component each include two, and the two first limiting components and the two second limiting components are respectively symmetrically arranged on both sides of the slot.

8. The card reading apparatus of claim 7, wherein Along the depth direction of the slot, each of the limiting components is offset from the corresponding second limiting component.

9. The card reader as described in any one of claims 1 to 6, characterized in that, Along the depth direction of the slot, the identification sensor is located between the first limiting component and the second limiting component.

10. The card reading apparatus according to any one of claims 1 to 6, wherein The first limiting component includes: A contact wheel, rotatably disposed within the cavity and positioned near the opening of the slot, the contact wheel portion protruding from the sidewall surface of the slot; and A floating wheel, which is rotatably disposed within the cavity and is capable of moving relative to the contact wheel along the first direction; The contact wheel and the floating wheel are used to abut and limit the card along the first direction.

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