A long magnetic stripe sensor for banknote counterfeiting detection, banknote verification structure and assembly method

Abstract

The present invention discloses a long magnetic stripe sensor for banknote counterfeiting detection, a banknote verification structure, and an assembly method. Two protrusions are fixedly disposed at each end of the long magnetic stripe sensor's bracket. The free surface of each protrusion includes a platform and a positioning post. The two positioning posts are equidistant from the platform on the same protrusion. The long magnetic stripe sensor body is fixed to the platform via the backs of its ends. When installing the long magnetic stripe sensor in a financial instrument with banknote counterfeiting detection capabilities, the positioning posts only need to contact the outer rings of two drive shaft bearings to ensure that the long magnetic stripe sensor bracket and the drive pulley are parallel in the longitudinal direction. Furthermore, only the outer end face of the second protrusion is screwed to the second side wall of the frame, while the outer end face of the first protrusion is circumferentially limited by a positioning block inserted through an assembly hole and connected to the first side wall. This prevents the bracket from arching due to overtightening of the screws at both ends.

Description

Technical Field

[0001] The present invention relates to the field of financial instruments, and in particular to a long magnetic stripe sensor for counterfeit banknote detection, a banknote detection structure and an assembly method. Background Art

[0002] With economic development, the circulation of banknotes has increased, leading to an increased use of various financial instruments for handling banknotes. However, counterfeit banknotes have also become a problem, leading to the proliferation of financial instruments with banknote detection capabilities. A financial instrument with banknote detection capabilities typically uses multiple magnetic sensors to detect the multiple magnetic detection points on a banknote. Among these, long magnetic stripe (rectangular magnetic stripe) sensors are considered the most effective design because they can fully cover the entire banknote, sensing subtle variations in the magnetic detection points across the entire banknote, enabling identification of genuine and counterfeit bills. This makes them an efficient and stable method for magnetic banknote detection. However, when a banknote passes through a long magnetic stripe sensor, the banknote and the bottom surface of the long magnetic stripe sensor (the surface facing and contacting the banknote) must be in perfect contact. Any gap will directly affect the strength of the long magnetic stripe sensor's sampling signal. In fact, after many tests, it was found that only when the banknote is stably rubbed parallel to the surface of the long magnetic stripe sensor can the integrity and strength of the sampling signal be guaranteed.

[0003] In existing financial instruments equipped with long magnetic stripe sensors, the long magnetic stripe sensor typically utilizes a PCB (printed circuit board), also known as a magnetic head board, fixed to a bracket. This board contacts a drive pulley that rotates along a drive shaft to drive the banknote forward. The drive pulley propels the banknote through the long magnetic stripe sensor for detection. Therefore, the long magnetic stripe sensor must be parallel to the drive pulley along the length of the drive shaft, i.e., in the axial direction. This is typically achieved by ensuring that the bracket and the drive pulley are parallel in their length during installation. If the long magnetic stripe sensor and the drive pulley are not parallel, the banknote driven by the drive pulley will not remain parallel as it passes through the long magnetic stripe sensor, resulting in inaccurate magnetic detection results. Even when the same banknote is facing different directions, the magnetic signal detected by the long magnetic stripe sensor may vary in strength. This can obviously lead to counterfeit identification failures.

[0004] However, in actual installation, when fixing the bracket to the frame of a financial instrument, in order to adjust the distance between the long magnetic stripe sensor and the rotating hair wheel, the hole on the frame used to position the long magnetic stripe sensor is a waist-shaped hole. During manual installation, the long magnetic stripe sensor is easily offset, making it difficult to ensure that both ends are at the same distance from the rotating hair wheel, and the bracket cannot be accurately positioned, so it is impossible to ensure that the bracket and the transmission shaft remain parallel.

[0005] At the same time, the surface of the long magnetic stripe sensor and the magnetic head plate are fixed by welding or bonding. During the welding or bonding process, the welding material or bonding material is prone to uneven distribution, and there is often an uneven distance between the long magnetic stripe sensor and the magnetic head plate, which makes it impossible to assemble the long magnetic stripe sensor flat, resulting in errors; since the magnetic head plate often has uneven thickness problems during the manufacturing process, there will inevitably be unequal distance errors. In the prior art, the way the magnetic head plate is fixed to the bracket will cause these two errors to be superimposed on each other. Coupled with the installation error between the bracket and the drive shaft, the accurate installation of the long magnetic stripe sensor will be very difficult and inefficient.

[0006] Furthermore, when securing the bracket to the frame of a financial instrument, conventional methods involve screwing both ends of the bracket to the two side walls of the frame. However, when both ends of the bracket are tightened, the bracket can easily be overtightened, causing it to arch and deform, further increasing the misalignment between the long magnetic stripe sensor and the drive pulley.

[0007] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0008] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a long magnetic stripe sensor, a banknote verification structure and an assembly method for banknote counterfeiting detection.

[0009] The technical solutions of the present invention are as follows:

[0010] The present application discloses a long magnetic stripe sensor for banknote counterfeiting detection, comprising a bracket, wherein the bracket has two protrusions fixed at both ends in the length direction, facing the same direction, namely a first protrusion and a second protrusion, a platform and a positioning column are provided on the free surface of each protrusion, the top end of the positioning column is equidistant from the platform, and the two ends of the side of a long magnetic stripe sensor body facing the bracket are fixed to the platform; at least one mounting hole is provided on the outer side surface of each protrusion, wherein the outer side surface of the first protrusion is provided with an assembly hole adapted to the positioning block; and the outer side surface of the second protrusion is provided with a screw hole.

[0011] Preferably, the platform is located inside the positioning column.

[0012] Preferably, the long magnetic stripe sensor further comprises a magnetic head plate for receiving the electrical signal emitted by the long magnetic stripe sensor body, which is arranged between the two protrusions and located between the long magnetic stripe sensor body and the bracket.

[0013] More preferably, the long magnetic stripe sensor body is parallel to the magnetic head plate along its length direction, and is fixed to the bottom surface of the magnetic head plate through at least one fixed connection.

[0014] More preferably, at least one fixing post is provided between the two protrusions, the upper end of the fixing post is fixedly connected to the bracket, and the lower end of the fixing post is fixedly connected to the magnetic head plate.

[0015] Further preferably, the number of the fixing posts is at least two and they are dispersed along the length direction of the bracket to connect the magnetic head plate and the bracket.

[0016] Further preferably, the upper end of the fixing column is fixedly connected to the bracket in a vertical direction, and the connection between the lower end and the magnetic head plate can be adjusted up and down in the vertical direction before being fixed.

[0017] More preferably, the fixing post includes a vertical threaded through hole, a positioning screw is screwed into the threaded through hole from the upper end, and the lower end of the positioning screw extends out of the threaded through hole and is rotatably connected to the head plate.

[0018] The present invention also discloses a banknote verification structure including the long magnetic stripe sensor, and also includes a transmission hair wheel, a transmission shaft is fixedly arranged axially at the center of the transmission hair wheel, and transmission shaft bearings with the same outer diameter are respectively provided at both ends of the transmission shaft, and the transmission shaft drives the transmission hair wheel to rotate; the two raised free ends independently contact the outer ring side wall of the transmission shaft bearing, and a banknote channel is formed between the long magnetic stripe sensor body and the transmission hair wheel.

[0019] Preferably, the transmission shaft and the transmission wool wheel are designed as one piece.

[0020] Preferably, the long magnetic stripe sensor is fixed to the frame through at least one mounting hole, and the frame includes two side walls, namely a first side wall and a second side wall; the long magnetic stripe sensor is clamped between the two side walls and fixed to the frame; the first side wall is provided with at least one plug-in through hole corresponding to the assembly hole, and the radius of the plug-in through hole is greater than the radius of the positioning block; the positioning block is inserted into the assembly hole from the plug-in through hole and is fixed by a fixing plate provided with a fixing hole fixed to the outside of the first side wall.

[0021] Preferably, the fixing block includes an assembly end tightly fitted with the assembly hole and a fixing end tightly fitted with the fixing hole.

[0022] The present invention also discloses an assembly method of the banknote verification structure, which comprises at least the following steps:

[0023] a. Place the long magnetic stripe sensor into a frame comprising two side walls, namely a first side wall and a second side wall, and sandwich the long magnetic stripe sensor between the two side walls. The first side wall and the second side wall are provided with adjustment holes, namely, the first side wall is provided with a plug-in hole, and the second side wall is provided with a screw hole; align the assembly hole of the long magnetic stripe sensor with the plug-in hole, and align the screw hole with the screw hole;

[0024] b. Push the long magnetic stripe sensor along the direction of the through hole extending toward the drive wheel so that the two positioning posts contact the outer rings of the drive shaft bearings at both ends of the drive shaft of the drive wheel;

[0025] c. After the positioning block passes through the plug-in through-hole, it is inserted into the assembly hole, and the positioning block is tightly fitted with the side wall of the assembly hole;

[0026] d. Cover the fixing plate, insert the fixed end of the positioning block into and tightly fit the fixing hole of the fixing plate, and fix the fixing plate to the outer side of the first side wall;

[0027] e. Insert the screw or screw through the screw hole on the second side wall and then into the screw hole, and turn the screw or screw until it is tightened and fixed.

[0028] Preferably, the adjustment through hole is a waist-shaped hole, or a circular hole with a diameter larger than that of the assembly hole and / or the screw hole.

[0029] The present invention discloses a long magnetic stripe sensor, banknote verification structure, and assembly method for counterfeit banknote detection. Two protrusions are fixedly disposed at each end of the long magnetic stripe sensor's bracket. The free surface of each protrusion includes a platform and a positioning post. The two positioning posts are equidistant from the platform on the same protrusion. The long magnetic stripe sensor body is fixed to the platforms by the backs of its ends. When installing the long magnetic stripe sensor in a financial instrument with banknote counterfeit detection capabilities, the positioning posts merely need to contact the outer rings of the two drive shaft bearings to ensure that the long magnetic stripe sensor bracket and the drive pulley are longitudinally parallel. Furthermore, because only the outer end surface of the second protrusion is screwed to the second side wall of the frame, while the outer end surface of the first protrusion is circumferentially fixed to the first side wall via an assembly hole provided therein and engaged by a positioning block inserted therein, this prevents the bracket from arching due to overtightening the screws at either end, which could increase assembly errors. The long magnetic stripe sensor, banknote verification structure and assembly method disclosed in the present invention greatly simplify the assembly process. It is only necessary to ensure that the heights of the positioning posts from the platforms on the same side are equal before installation. Therefore, it is easier to achieve the purpose of keeping the long magnetic stripe sensor body parallel to the transmission hair wheel, and has better assembly consistency, thereby ensuring that each banknote can pass through the long magnetic stripe sensor body in parallel under the rotation drive of the transmission hair wheel, ensuring the accuracy of the magnetic induction reading results, and thus ensuring the accuracy of the banknote counterfeit detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the long magnetic stripe sensor of the present invention.

[0031] Figure 2 It is an enlarged structural schematic diagram of the contact and positioning between the positioning column and the outer ring of the transmission shaft bearing when the long magnetic strip sensor of the present invention is installed.

[0032] Figure 3 It is a schematic diagram of the connection structure between the fixed column and the magnetic head plate in the long magnetic stripe sensor of the present invention.

[0033] Figure 4 This is a cross-sectional view of the overall structure of the long magnetic stripe sensor of the present invention after installation.

[0034] In the figure, 1. long magnetic stripe sensor body, 2. magnetic head plate, 3. bracket, 4. magnetic signal plate, 5. fixing column, 6. protrusion, 7. transmission pulley, 8. transmission shaft, 9. transmission shaft bearing, 37. first side wall, 38. second side wall, 51. positioning screw, 61. screw hole, 62. assembly hole, 63. positioning block, 64. plug-in through hole, 65. fixing plate, 66. platform, 67. first protrusion, 68. second protrusion, 69. positioning column. DETAILED DESCRIPTION

[0035] The present invention provides a long magnetic stripe sensor, banknote verification structure, and assembly method for counterfeit banknote detection. To clarify the objectives, technical solutions, and effects of the present invention, the present invention is further described below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0036] The long magnetic strip sensor of the present invention is mainly used for banknote counterfeiting detection, and therefore, is set in a financial instrument with banknote counterfeiting detection function. In a preferred embodiment, Figure 1 As shown, it includes a bracket 3, which is preferably made of a hard material, such as a hard metal material such as aluminum alloy. The two ends of the bracket 3 in the length direction face the same direction, such as Figure 1 In the lower side direction of the figure, two protrusions 6 are fixed, specifically a first protrusion 67 and a second protrusion 68. On the free surface of each protrusion 6, that is, the outer surface of the protrusion 6 facing downward, as shown in the figure Figure 2 As shown, each is provided with a platform 66 and a positioning post 69, with the tops of the positioning posts 69 positioned equidistant from the platforms 66, thereby ensuring that the line connecting the tops is parallel to the line connecting the two platforms 66. A long magnetic stripe sensor body 1 is secured to the same raised platform 66 at its ends facing the upper side of the bracket. Therefore, as long as the thickness of the long magnetic stripe sensor body 1 remains consistent along its length, the lower surface of the long magnetic stripe sensor body 1, facing away from the platforms 66, remains parallel to the line connecting the two tops.

[0037] Of course, in order to ensure that the side surfaces at both ends of the long magnetic stripe sensor body 1 can be fixedly connected to the platform 66 without obstacles, the platform 66 is preferably arranged on the inner side of the positioning column 69, that is, between the two platforms 66, they can be connected to each other without obstacles.

[0038] A magnetic head plate 2 is provided between the long magnetic stripe sensor body 1 and the bracket 3, and between the two protrusions 6. The magnetic head plate 2 is used to receive the electrical signal emitted by the long magnetic stripe sensor body 1. In another embodiment, if the magnetic head plate 2 cannot completely accommodate the relevant circuits of the long magnetic stripe sensor body 1, then Figure 1 As shown, the magnetic head plate 2 is also electrically connected to a magnetic signal plate 4 , and the magnetic signal plate 4 is arranged on the upper outer side of the bracket 3 .

[0039] In a more preferred embodiment, Figure 2As shown, at least one fixing post 5 is provided between the two protrusions 6 , the upper end of the fixing post 5 is fixedly connected to the bracket 3 , and the lower end of the fixing post 5 is fixedly connected to the magnetic head plate 2 .

[0040] In a more preferred embodiment, the long magnetic stripe sensor body 1 is parallel to the bottom surface of the magnetic head plate 2 along the length direction, and is fixed to the magnetic head plate 2 by at least one fixed connection, such as bonding or welding. Because the magnetic head plate 2 has been fixed to the platform 66 through the side surfaces at both ends, the upper and lower positions of the magnetic head plate 2 along the length direction may also need to be adjusted according to actual conditions. Specifically, the actual height positions of each part of the magnetic head plate 2 along the length direction can be specifically limited by dispersing more than one fixed column 5 along the length direction. Alternatively, the upper end of the fixed column 5 can be fixedly connected to the bracket 3 in the vertical direction, and the lower end of the fixed column 5 and the magnetic head plate 2 can be changed from a fixed connection to a connection that can be adjusted up and down in the vertical direction before being fixed. Specifically, as Figure 3 As shown, the fixing post 5 includes a vertical threaded through-hole, i.e., threads are provided on the inner wall of the through-hole. A positioning screw 51 is screwed into the threaded through-hole from the upper end. The lower end of the positioning screw 51 extends out of the threaded through-hole and is rotatably connected to the magnetic head plate 2. Rotating the positioning screw 51 allows the height of the magnetic head plate 2 to be adjusted up or down. This ensures that the magnetic head plate 2 and the long magnetic stripe sensor body 1 remain fixedly connected without deformation, further ensuring that the long magnetic stripe sensor body 1 is not easily deformed, preventing banknotes from getting stuck.

[0041] After the long magnetic strip sensor is set up, it is installed on a frame of a financial instrument with the ability to detect counterfeit banknotes to form a banknote verification structure. Figure 2 As shown, the banknote verification structure includes the long magnetic stripe sensor and at least one transmission shaft 8. The transmission shaft 8 is rotatably mounted on the frame through two transmission shaft bearings 9 with the same outer diameter at both ends. The transmission shaft 8 is used to drive a coaxially fixed transmission hair wheel 7 to rotate by rotation. The transmission hair wheel 7 can drive the banknotes thereon to translate through the long magnetic stripe sensor body 1 by rotation.

[0042] In order to ensure that the long magnetic stripe sensor body 1 and the driving wheel 7 are relatively tightly fitted, that is, the banknote channel formed between the long magnetic stripe sensor body 1 and the driving wheel 7 will not cause banknotes to be stuck due to a large gap, nor will it affect the movement of banknotes due to being too tight, it is necessary to limit the height of the positioning column 69 from the platform 66. Figure 2As shown, the distance between the positioning post 69 and the platform 66 should be equal to or slightly greater than the sum of the thickness of the long magnetic stripe sensor body 1 and the radius of the driving wool wheel 7 .

[0043] When the long magnetic stripe sensor is assembled in the financial instrument, the long magnetic stripe sensor is fixed to the frame through the mounting holes on the outer side wall of the protrusion 6. Figure 2 As shown, at least one mounting hole is provided on the outer side of each protrusion 6, wherein the outer side of the first protrusion 67 is provided with an assembly hole 62 adapted to a positioning block 63; and the outer side of the second protrusion 68 is provided with at least one screw hole 61.

[0044] Accordingly, the frame includes two side walls, namely a first side wall 37 and a second side wall 38; the long magnetic strip sensor is sandwiched between the two side walls and fixed on the frame, as shown in FIG. Figure 4 As shown in the cross-sectional view, the first side wall 37 is adjacent to the first protrusion 67, and the second side wall 38 is adjacent to the second protrusion 68. At least one insertion hole 64 is formed on the first side wall 37, corresponding to the assembly hole 62. The positioning block 63 is inserted into the assembly hole 62 from the outside along the insertion hole 64. The radius of the insertion hole 64 is slightly larger than that of the positioning block 63, or the insertion hole 64 is a waist-shaped hole with a vertical long axis and a short axis slightly longer than the radius of the positioning block 63. Therefore, the insertion hole 64 allows the positioning block 63 to make a certain degree of vertical adjustment within the insertion hole 64, thereby driving the first protrusion 67 of the long magnetic stripe sensor to also make a certain degree of vertical adjustment, ensuring that the top end of the positioning post 69 contacts the outer ring of the drive shaft bearing 9, thereby ensuring that the long magnetic stripe sensor body 1 and the drive pulley 7 remain axially parallel. Once the top of the positioning post 69 contacts the outer ring of the drive shaft bearing 9, the positioning block 63 is secured by a fixing plate 65, which is fixed to the outside of the first sidewall 37 and has a fixing hole, to prevent any subsequent displacement. Specifically, the fixing block 63 includes an assembly end that tightly fits the assembly hole 62 and a fixing end that tightly fits the fixing hole. When the assembly end of the fixing block 63 is inserted from the outside into the assembly hole 62 through the insertion hole 64 in the first sidewall 37, a certain gap remains between the bottom of the assembly hole 62 and the fixing block 63. However, the fixing block 63 is completely aligned with the sidewall of the assembly hole 62, allowing the fixing block 63 to move only axially along the assembly hole 62, that is, only toward or away from the bottom of the assembly hole 62, in the direction of entry and exit. This gap allows the bracket 3 to expand and contract along its length, preventing the bracket 3 from being squeezed and deformed due to overtightening.

[0045] The tight fit means that the two walls that fit together after insertion have more than one contact position, so that after fitting, no relative displacement in a direction other than the insertion direction can occur between the two walls.

[0046] Because the specific dimensions of the financial instrument have been designed and fixed at the factory, when the positioning column 69 contacts the outer ring of the transmission shaft bearing 9, the insertion hole 64 is aligned with the assembly hole 62, and the screw hole 61 on the second protrusion 68 is aligned with the corresponding screw hole on the second side wall 38. In addition, the diameter of the screw hole is slightly larger than the screw hole 61. Therefore, after the screw or bolt is inserted through the screw hole and enters the screw hole 61 and is tightened, the bracket 3 can be locked, preventing the bracket 3 from being non-parallel due to any deviation. At the same time, the bracket 3 will not be deformed or arched due to excessive compression of the side wall due to overtightening of the screws.

[0047] An assembly method of the banknote verification structure disclosed in the present invention comprises at least the following steps:

[0048] a. Place the long magnetic stripe sensor into a frame comprising two side walls, namely a first side wall 37 and a second side wall 38. The long magnetic stripe sensor is sandwiched between the two side walls. The first side wall 37 and the second side wall 38 are provided with adjustment holes, namely, a plug-in hole 64 is provided on the first side wall 37, and a screw hole is provided on the second side wall 38. The assembly hole 62 of the long magnetic stripe sensor is aligned with the plug-in hole 64, and the screw hole 61 is aligned with the screw hole.

[0049] b. Push the long magnetic stripe sensor along the direction of the through hole extending toward the drive wheel, so that the two positioning posts 69 contact the outer rings of the drive shaft bearings 9 at both ends of the drive shaft 8 of the drive wheel 7 respectively;

[0050] c. After the positioning block 63 passes through the plug-in through-hole 64, it is inserted into the assembly hole 62, and the positioning block 63 is tightly fitted with the side wall of the assembly hole 62;

[0051] d. Cover the fixing plate 65, the fixed end of the positioning block 63 is inserted into and tightly fits the fixing hole of the fixing plate 65, and the fixing plate 65 is fixed to the outer side of the first side wall 37;

[0052] e. Insert the screw or screw through the screw hole of the second side wall 38 and then into the screw hole 61 , and turn the screw or screw until it is tightened and fixed to the bracket 3 .

[0053] Specifically, the assembly end of the positioning block 63 is inserted into the plug-in hole 64 from the outside of the first side wall 37, and then inserted into the assembly hole 62. At this time, the fixed end is exposed on the outside of the plug-in hole 64, and then the fixing plate 65 is closed, and the fixed end is inserted into the fixing hole, and finally the fixing plate 65 is fixed to the outer side of the first side wall 37.

[0054] In summary, the long magnetic stripe sensor, banknote verification structure and assembly method for banknote counterfeiting disclosed in the present invention are characterized in that two protrusions 6 are fixedly provided at both ends of the bracket 3 of the long magnetic stripe sensor, and the free surface of each protrusion 6 includes a platform 66 and a positioning column 69. The two positioning columns 69 are equidistant from the platform 66 on the same protrusion 6, and the long magnetic stripe sensor body 1 is fixed to the platform 66 by fitting the backs of both ends. When installing the long magnetic stripe sensor into a financial machine with banknote counterfeiting detection capability, it is only necessary to make the positioning columns 69 contact the outer rings of the two transmission shaft bearings 9 of the transmission shaft 8 respectively to ensure that the bracket 3 of the long magnetic stripe sensor is parallel to the transmission hair wheel 7 in the length direction. Furthermore, because only the outer end face of the second protrusion 68 is screwed to the second side wall 38 of the frame, while the outer end face of the first protrusion 67 is connected to the first side wall 37 and circumferentially limited by the assembly hole 62 and the inserted positioning block 63, the bracket 3 is prevented from arching due to overtightening of the screws at both ends, thereby increasing assembly errors. The long magnetic stripe sensor, banknote verification structure, and assembly method disclosed in the present invention greatly simplify the assembly process. Prior to installation, it is only necessary to ensure that the positioning post 69 is at an equal height from the platform 66 on the same side. This makes it easier to achieve the purpose of maintaining the long magnetic stripe sensor body 1 parallel to the drive pulley 7, and achieves better assembly consistency, thereby ensuring that each banknote can pass through the long magnetic stripe sensor body 1 in parallel under the rotation of the drive pulley 7, ensuring the accuracy of the magnetic induction reading results, and thus ensuring the accuracy of the banknote counterfeit detection results.

[0055] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A long magnetic stripe sensor for banknote counterfeiting detection, characterized in that: The device comprises a bracket, wherein two protrusions, namely a first protrusion and a second protrusion, are fixed at both ends of the bracket in the longitudinal direction and face the same direction. A platform and a positioning post are provided on the free surface of each protrusion, and the top of the positioning post is equidistant from the platform. Both ends of the side of a long magnetic stripe sensor body facing the bracket are fixed to the platform. At least one mounting hole is provided on the outer side of each protrusion, wherein the outer side of the first protrusion is provided with an assembly hole adapted to the positioning block; the outer side of the second protrusion is provided with a screw hole; It also includes a magnetic head plate for receiving the electrical signal sent by the long magnetic stripe sensor body, the magnetic head plate is arranged between the two protrusions and located between the long magnetic stripe sensor body and the bracket; A fixing column is provided between the two protrusions, wherein the upper end of the fixing column is fixedly connected to the bracket, and the lower end of the fixing column is fixedly connected to the magnetic head plate; The long magnetic stripe sensor body is parallel to the magnetic head plate along its length direction and is fixed to the bottom surface of the magnetic head plate through at least one fixed connection; There are at least two fixing posts, which are dispersed along the length direction of the bracket and connect the head plate and the bracket; The upper end of the fixing column is fixedly connected to the bracket in the vertical direction, and the connection between the lower end and the magnetic head plate can be adjusted up and down in the vertical direction before being fixed; The fixing column includes a vertical threaded through hole, a positioning screw is screwed into the threaded through hole from the upper end, and the lower end of the positioning screw extends out of the threaded through hole and is rotatably connected to the magnetic head plate.

2. A banknote verification structure comprising the long magnetic stripe sensor according to claim 1, characterized in that: It also includes a transmission hair wheel, a transmission shaft is fixedly arranged axially at the center of the transmission hair wheel, and transmission shaft bearings with the same outer diameter are respectively provided at both ends of the transmission shaft, and the transmission shaft drives the transmission hair wheel to rotate; the two raised free ends independently contact the outer ring side wall of the transmission shaft bearing, and a banknote channel is formed between the long magnetic strip sensor body and the transmission hair wheel.

3. The banknote verification structure according to claim 2, characterized in that: The long magnetic stripe sensor is fixed to the frame through at least one mounting hole, and the frame includes two side walls, namely a first side wall and a second side wall; the first side wall is provided with at least one plug-in through hole corresponding to the assembly hole; the positioning block is inserted into the assembly hole through the plug-in through hole and is fixed by a fixing plate provided with a fixing hole fixed to the outside of the first side wall; the positioning block includes an assembly end that is tightly fitted with the assembly hole and a fixed end that is tightly fitted with the fixing hole.

4. A method for assembling a banknote verification structure according to claim 2 or 3, characterized in that: At least the following steps are included: a. The frame includes two side walls, namely a first side wall and a second side wall, and the long magnetic stripe sensor is sandwiched between the two side walls. The first side wall and the second side wall are provided with adjustment holes, namely, the first side wall is provided with a plug-in hole, and the second side wall is provided with a screw hole; the assembly hole of the long magnetic stripe sensor is aligned with the plug-in hole, and the screw hole is aligned with the screw hole; b. Push the long magnetic stripe sensor along the extension direction of the adjustment hole toward the direction of the drive wheel, so that the two positioning posts are in contact with the outer rings of the two drive shaft bearings respectively; c. After the positioning block passes through the plug-in through-hole, it is inserted into the assembly hole, and the positioning block is tightly fitted with the side wall of the assembly hole; d. Cover the fixing plate, insert the fixed end of the positioning block into and tightly fit the fixing hole of the fixing plate, and fix the fixing plate to the outer side of the first side wall; e. Insert the screw or screw through the screw hole on the second side wall and then into the screw hole, and turn the screw or screw until it is tightened and fixed.

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