A flux leakage magnetic matrix magnetic sensor assembly

Abstract

The utility model discloses a kind of matrix magnetic sensor assemblies of leakage prevention magnetism, the matrix magnetic sensor assemblies of leakage prevention magnetism include: shell, shell integratedly formed setting, the top plate of shell is hollowly provided with let slot, stamping setting is provided with several assembly grooves on the opposite two side walls of shell, assembly groove is protrudingly set towards the inner cavity of shell;Magnetic core assembly, magnetic core assembly is embedded in the inner cavity of shell, the magnetic head in magnetic core assembly is set corresponding let slot, the two sides of magnetic core assembly are engaged with assembly groove connection.The utility model is set integratedly formed shell, and stamping is formed protrudingly towards inside assembly groove on the opposite two side walls of shell, the engagement assembly of forming to magnetic core assembly, the shell of the utility model can realize the effect of stable installation magnetic core assembly without need to open hole, can avoid the leakage phenomenon possibly caused by strong magnetic contact part of the two sides of checking and cashing magnetic head installation, prevent producing noise defect, improve the service life of magnetic head.

Description

Technical Field

[0001] This utility model relates to the field of banknote verification sensor technology, and in particular to a matrix magnetic sensor assembly that prevents magnetic leakage. Background Technology

[0002] The magnetic head for banknote verification is a crucial component in banknote detectors and other equipment used to detect the magnetic characteristics of banknotes. Its working principle involves detecting magnetic ink and converting and analyzing electrical signals. For example, during the printing process, banknotes are printed with magnetic ink to create specific patterns. The magnetic characteristics of these patterns, such as magnetic field strength and magnetic distribution, follow certain patterns. The magnetic head can sense the magnetic signals on the banknote. When a banknote passes near the magnetic head, it can determine its authenticity based on pre-set magnetic characteristic parameters. With continuous technological advancements, banknote verification technology is constantly evolving. In addition to acquiring magnetic signals through the magnetic head, strong magnets are also installed on both sides of the magnetic head to assist in identification.

[0003] In the existing technology, the structure of the banknote verification magnetic head can refer to the magnetic head structure disclosed in CN103886669A. The existing technology uses an opening on the outer shell to cooperate with the baffle of the internal magnetic core to form a positioning installation, and forms a seal by laser welding. However, after a certain period of use, the magnetic core is prone to fatigue at the welded parts due to stress. The opening part and the strong magnetic contact parts installed on both sides of the banknote verification magnetic head are prone to magnetic leakage, resulting in noise and poor performance, which affects the normal use of the magnetic head.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] To address the problem that existing banknote verification magnetic heads are positioned and installed by opening a hole in the outer shell to cooperate with the baffle of the internal magnetic core, and the opening and the baffle are sealed by laser welding, fatigue of the welded part is easily caused by the use time and stress on the magnetic core, resulting in magnetic leakage at the opening, generating noise and affecting the normal use of the magnetic head, this utility model provides a matrix magnetic sensor assembly to prevent magnetic leakage.

[0006] This utility model is achieved through the following technical solution:

[0007] A matrix magnetic sensor assembly for preventing magnetic leakage, wherein the matrix magnetic sensor assembly for preventing magnetic leakage includes:

[0008] The housing is integrally formed. A clearance groove is hollowed out on the top plate of the housing. Several assembly grooves are stamped on the opposite side walls of the housing, and the assembly grooves protrude toward the inner cavity of the housing.

[0009] A magnetic core assembly is fitted into the inner cavity of the housing. The magnetic head in the magnetic core assembly is arranged corresponding to the clearance groove. Both sides of the magnetic core assembly are engaged with the assembly groove.

[0010] The aforementioned anti-magnetic leakage matrix magnetic sensor assembly includes a partition in the inner cavity of the housing, the partition being located at the middle of the length direction of the housing and perpendicular to the length direction of the housing;

[0011] The magnetic core assembly includes a first magnetic core module and a second magnetic core module arranged in a mirror image. The first magnetic core module is fitted into the inner cavity of the housing on one side of the partition, and the second magnetic core module is fitted into the inner cavity of the housing on the other side of the partition.

[0012] The aforementioned matrix magnetic sensor assembly with anti-magnetic leakage, wherein the first magnetic core module includes:

[0013] The magnetic head, a plurality of the magnetic heads are connected in a row;

[0014] A connecting plate is provided, with two connecting plates symmetrically arranged on both sides of a plurality of magnetic heads, and the connecting plates are fixedly connected to the magnetic heads.

[0015] In the aforementioned matrix magnetic sensor assembly for preventing magnetic leakage, a screw hole is provided on the connecting plate corresponding to the position of the magnetic head, and the connecting plate includes a plurality of screws, which pass through the screw hole and are fixedly connected to the magnetic head.

[0016] The aforementioned matrix magnetic sensor assembly for preventing magnetic leakage includes a plurality of support portions protruding from the connecting plate, the plurality of support portions being evenly arranged at predetermined intervals, and the support portions being arranged to avoid the screw holes.

[0017] When the first magnetic core module is fitted into the inner cavity of the housing, the support portion abuts against the corresponding side wall of the housing.

[0018] The aforementioned matrix magnetic sensor assembly with anti-magnetic leakage is wherein the support portion is disposed to avoid the mounting slot;

[0019] An encapsulation layer is provided on the outside of the first magnetic core module. The encapsulation layer is filled and wrapped around the first magnetic core module along the position between adjacent support portions, and engages with the protruding structure of the assembly groove.

[0020] The aforementioned matrix magnetic sensor assembly with anti-magnetic leakage, wherein the encapsulation layer is resin.

[0021] The aforementioned matrix magnetic sensor assembly for preventing magnetic leakage includes a housing comprising a limiting part symmetrically disposed on both sides of the top plate of the housing and connected to the two side walls of the housing at a predetermined angle.

[0022] The position of the limiting part on the connecting plate is set at the predetermined angle, and the side of the supporting part facing the limiting part is chamfered with a certain arc.

[0023] The aforementioned matrix magnetic sensor assembly for preventing magnetic leakage includes a plurality of limiting grooves stamped on the limiting portion, the plurality of limiting grooves protruding toward the inner cavity of the housing, the limiting grooves being used to limit the assembly position of the magnetic core assembly.

[0024] The aforementioned matrix magnetic sensor assembly for preventing magnetic leakage includes a magnetic core assembly comprising guide plates disposed at both ends of the housing, the guide plates being disposed along a predetermined arc, and the guide plates being elastic guide plates.

[0025] The beneficial effects of this utility model are as follows: By setting an integrally formed shell and stamping inwardly protruding assembly grooves on the opposite side walls of the shell, the magnetic core assembly can be snapped together. The shell of this utility model can achieve the effect of stable installation of the magnetic core assembly without the need for opening holes. This can avoid the magnetic leakage phenomenon that may be caused by the strong magnetic contact parts installed on both sides of the banknote verification magnetic head, prevent noise and malfunction, and improve the service life of the magnetic head. Attached Figure Description

[0026] Figure 1 This is an exploded view of the structure of the matrix magnetic sensor assembly for preventing magnetic leakage according to this utility model;

[0027] Figure 2 This is a first-view structural disassembly diagram of the matrix magnetic sensor assembly for preventing magnetic leakage according to this utility model;

[0028] Figure 3 This is a second-view structural disassembly diagram of the matrix magnetic sensor assembly for preventing magnetic leakage of this utility model;

[0029] Figure 4 This is a schematic diagram of the combined state structure of the matrix magnetic sensor assembly for preventing magnetic leakage according to this utility model;

[0030] Figure 5 This utility model relates to a matrix magnetic sensor assembly designed to prevent magnetic leakage. Figure 4 A schematic diagram of the AA node structure.

[0031] exist Figures 1 to 5 In the middle: 100, housing; 110, clearance groove; 120, assembly groove; 130, limiting part; 131, limiting groove; 200, magnetic core assembly; 210, first magnetic core module; 211, magnetic head; 212, connecting plate; 213, screw hole; 214, support part; 220, second magnetic core module; 230, guide plate; 300, partition plate; 400, encapsulation layer. Detailed Implementation

[0032] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0033] 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 each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] 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, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, 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. If 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.

[0035] In the existing technology, the structure of the banknote verification magnetic head can refer to the magnetic head structure disclosed in CN103886669A. The existing technology uses an opening on the outer shell to cooperate with the baffle of the internal magnetic core to form a positioning installation, and forms a seal by laser welding. However, after a certain period of use, the magnetic core is prone to fatigue at the welded parts due to stress. The opening part and the strong magnetic contact parts installed on both sides of the banknote verification magnetic head are prone to magnetic leakage, resulting in noise and poor performance, which affects the normal use of the magnetic head.

[0036] Based on the aforementioned problems in the existing technology, such as Figure 1 As shown, this utility model provides a matrix magnetic sensor assembly with anti-magnetic leakage. The matrix magnetic sensor assembly with anti-magnetic leakage includes: a housing 100, which is integrally formed. A clearance groove 110 is hollowed out on the top plate of the housing 100. A plurality of assembly grooves 120 are stamped on the opposite side walls of the housing 100, and the assembly grooves 120 protrude toward the inner cavity of the housing 100; a magnetic core assembly 200, which is fitted into the inner cavity of the housing 100. The magnetic head 211 in the magnetic core assembly 200 is set corresponding to the clearance groove 110. The two sides of the magnetic core assembly 200 are engaged with the assembly grooves 120.

[0037] This invention features an integrally formed housing 100 with inwardly protruding mounting grooves 120 stamped on the opposite side walls of the housing 100, forming a snap-fit ​​assembly for the magnetic core assembly 200. The housing 100 of this invention can achieve stable installation of the magnetic core assembly 200 without the need for opening holes, avoiding magnetic leakage that may be caused by the strong magnetic contact parts installed on both sides of the banknote verification magnetic head 211, preventing noise and improving the service life of the magnetic head 211.

[0038] In the above embodiments, such as Figure 1 As shown, the main body of the matrix magnetic sensor assembly for preventing magnetic leakage of this utility model consists of a housing 100 and a magnetic core assembly 200. The housing 100 is made of metal material and has the function of shielding magnetic fields. One side of the housing 100 is open. The other side opposite to the open side of the housing 100 is defined as the top plate in the following embodiment. In this embodiment, the top plate is provided with a relief groove 110. The relief groove 110 is used to expose the magnetic head 211 in the magnetic core assembly 200 so that it can correspond with items that need to be verified, such as banknotes, in actual use to achieve the effect of obtaining magnetic signals.

[0039] In this embodiment, in order to install and fix the housing 100 and the magnetic core assembly 200, a plurality of assembly slots 120 are stamped on the opposite side walls of the housing 100. The plurality of assembly slots 120 protrude toward the inner cavity of the housing 100. Stamping is a processing method that uses a die (mold) to separate or deform the metal sheet. During the stamping process, the material is usually in an elastic or elastoplastic state. With the help of the external force applied by the press, the sheet metal undergoes a corresponding shape change, thereby obtaining a part with a certain shape, size and performance. In this embodiment, the assembly groove 120 formed by stamping does not affect the integrity of the housing 100, that is, there is no opening structure on the opposite side walls of the housing 100, thereby avoiding phenomena such as magnetic leakage and noise problems on both sides of the housing 100 during actual application. On the other hand, the assembly groove 120 formed by stamping protrudes from the inner cavity of the housing 100, which can achieve engagement with the magnetic core assembly 200. This not only achieves the effect of positioning and installing the magnetic core assembly 200, but also fixes the magnetic core assembly 200 inside the housing 100, which can effectively prevent the magnetic head 211 in the magnetic core assembly 200 from displacing and retracting during use.

[0040] In another possible embodiment of this utility model, to further improve the installation accuracy and fixing effect of the magnetic core assembly 200 inside the housing 100, such as... Figure 2 and Figure 3As shown, a partition 300 is also provided in the inner cavity of the housing 100. The partition 300 is located in the middle of the length direction of the housing 100 and is perpendicular to the length direction of the housing 100. The partition 300 is fixedly connected to the housing 100 by laser welding, dividing the inner cavity of the housing 100 into two symmetrical chambers. Correspondingly, the magnetic core module specifically includes a first magnetic core module 210 and a second magnetic core module 220 arranged in a mirror image. In specific installation, the first magnetic core module 210 is fitted into the inner cavity of the housing 100 on one side of the partition 300, and the second magnetic core module 220 is fitted into the inner cavity of the housing 100 on the other side of the partition 300. Through this arrangement, the inner cavity of the housing 100 is partitioned, and the space allocation in the inner cavity of the housing 100 is refined, which can ensure that the assembly of the magnetic core assembly 200 in the housing 100 is more stable. At the same time, it also avoids the shaking or displacement that may occur during the use of the magnetic core assembly 200, so as to prevent magnetic leakage and magnetic core sinking. In addition, the design of the partition 300 facilitates the modular installation and disassembly of the magnetic core assembly 200, improving the convenience of maintenance and replacement.

[0041] Furthermore, since the first magnetic core module 210 and the second magnetic core module 220 are mirror images, only the specific structure of the first magnetic core module 210 will be described in the following embodiments. Those skilled in the art can refer to the first magnetic core module 210 to configure the second magnetic core module 220.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the first magnetic core module 210 is specifically composed of the aforementioned magnetic heads 211 and connecting plates 212. Several magnetic heads 211 are provided, and these heads are connected in a row. To correspond with the magnetic signal distribution of banknotes and other items in the prior art, the magnetic heads 211 in the first magnetic core module 210 can be specifically set to eight, with the eight heads 211 placed sequentially to form a row for acquiring magnetic signals from different parts of banknotes and other items. Two connecting plates 212 are provided, symmetrically arranged on both sides of the magnetic heads 211, and both connecting plates 212 are fixedly connected to the magnetic heads 211. This serves two purposes: firstly, to ensure that the magnetic heads 211 are connected in a mutually corresponding and flush manner, preventing misalignment of horizontal positions during subsequent use; secondly, this arrangement of magnetic heads 211 facilitates installation in the inner cavity of the housing 100, simplifying the assembly process and reducing assembly difficulty.

[0043] Furthermore, to achieve a fixed connection between the connecting plate 212 and the plurality of magnetic heads 211, in this embodiment, screw holes 213 are provided on the connecting plate 212 at positions corresponding to the magnetic heads 211. In addition, the connecting plate 212 also includes a plurality of screws, which pass through the screw holes 213 and are fixedly connected to the magnetic heads 211, thus forming a fixed connection between the connecting plate 212 and the plurality of magnetic heads 211. Simultaneously, during this assembly process, the screws, screw holes 213, and corresponding structures on the magnetic heads 211 correspond, keeping the plurality of magnetic heads 211 on the same mounting surface. This ensures that the extension length of the magnetic heads 211 installed in the housing 100 corresponding to the clearance groove 110 is consistent, avoiding differences in extension length that could affect the accuracy of acquiring magnetic signals from banknotes and other items. Furthermore, the connection between the connecting plate 212 and the magnetic heads 211 via screws further improves the stability of the connection, preventing the magnetic heads 211 from loosening or falling off during use.

[0044] In another possible embodiment of this utility model, such as Figure 1 As shown, a plurality of support portions 214 protrude from the outer side of the connecting plate 212. These support portions 214 are evenly arranged at predetermined intervals. When the support portions 214 are actually installed, they are positioned to avoid interfering with the installation and use of the screw holes 213 and screws. When the first magnetic core module 210 is fitted into the inner cavity of the housing 100, these support portions 214 abut against the corresponding sidewalls of the housing 100, facilitating assembly and further enhancing the stability and robustness of the first magnetic core module 210 within the housing 100. Furthermore, the support portions 214 help to distribute and bear the forces that the magnetic core assembly 200 may experience during use, reducing the risk of damage to the magnetic core assembly 200 due to uneven stress.

[0045] In one specific embodiment, the shape of the support 214 can be pre-processed so that the support 214 can cooperate with the protruding parts of the assembly grooves 120 on both sides of the housing 100. That is, the support 214 and the assembly grooves 120 formed by stamping are installed to a predetermined position through the elastic deformation of the material, so that the protruding parts of the assembly grooves 120 are engaged with the cooperation structure of the support 214, forming a fixed connection. The advantage of this embodiment is that it facilitates the disassembly and maintenance of the magnetic core assembly 200 in the later stage.

[0046] In another specific embodiment, such as Figure 4 and Figure 5As shown, to more firmly fix the magnetic core assembly 200 inside the housing 100, in this embodiment, the support portion 214 can be positioned to avoid the assembly groove 120. Simultaneously, an encapsulation layer 400 is provided on the outer side of the first magnetic core module 210. The encapsulation layer 400 can specifically be made of resin. After the first magnetic core module 210 is pushed to a predetermined position inside the housing 100, the encapsulation layer 400 can be injected into the area between adjacent support portions 214, so that the encapsulation layer 400 wraps around the first magnetic core module 210. After the encapsulation layer 400 cures, it forms a wrapping around the first magnetic core module 210 and the protruding portion of the assembly groove 120, and the encapsulation layer 400 engages with the protruding structure of the assembly groove 120, thereby further enhancing the fixing effect of the magnetic core assembly 200 inside the housing 100. This design not only improves the stability of the magnetic core assembly 200 but also helps prevent magnetic leakage and noise generation, thereby extending the service life of the magnetic head 211. In practical applications, this matrix magnetic sensor assembly, which prevents magnetic leakage, can more accurately acquire the magnetic signals of banknotes and other items, improving the accuracy and efficiency of banknote verification.

[0047] Furthermore, such as Figure 1 As shown, to ensure accurate installation of the magnetic core assembly 200 inside the housing 100, prevent mistaken operation, and avoid affecting the flowability of the encapsulation layer 400, a limiting part 130 is provided on the housing 100 in this embodiment. The limiting part 130 is symmetrically arranged on both sides of the top plate of the housing 100 and inclined at a predetermined angle. The limiting part 130 is actually a part of the integrally formed housing 100, serving as a transition structure between the top plate of the housing 100 and the two side walls of the housing 100. The cross-section of the housing 100 after the limiting part 130 is provided is trapezoidal, making the exposed magnetic head 211 structure on the top plate of the housing 100 more prominent, which is beneficial for contact with paper money and other items to be tested. At the same time, the setting of the limiting part 130 can also play a guiding role in the filling process of the encapsulation layer 400, so that the encapsulation layer 400 can flow evenly into the inner cavity of the housing 100 along the inclined angle of the limiting part 130, avoiding the formation of air bubbles or uneven accumulation of the encapsulation layer 400 during the filling process.

[0048] Correspondingly, the portion of the connecting plate 212 corresponding to the limiting portion 130 should be set at a predetermined angle corresponding to the limiting portion 130, and some portions of the support portion 214 facing the limiting portion 130 should be chamfered with a certain arc. The effect of this setting is that it is convenient for installation on the one hand, and on the other hand, it can make the inclination of the connecting plate 212 and the two limiting portions 130 match. When the magnetic component is installed into the housing 100, the inclination angle of the connecting plate 212 and the limiting portion 130 matches, which guides the magnetic head 211 so that the magnetic head 211 and the relief groove 110 are accurately aligned.

[0049] Furthermore, a plurality of limiting grooves 131 are stamped on the aforementioned limiting portion 130. These limiting grooves 131 protrude towards the inner cavity of the housing 100, further enhancing the limiting effect of the limiting portion 130 on the magnetic core assembly 200. When the magnetic core assembly 200 is installed into the housing 100, the corresponding portion of the magnetic core assembly 200 can engage with the protruding portion of the limiting groove 131 facing the inner cavity of the housing 100, thereby preventing horizontal displacement of the magnetic core assembly 200 during installation and ensuring that the magnetic core assembly 200 can be accurately and securely installed in the predetermined position. Simultaneously, a certain space is formed between adjacent limiting grooves 131, allowing the encapsulation layer 400 to flow smoothly within the gap, thus forming a complete enclosure of the magnetic core assembly 200.

[0050] In another possible embodiment of this utility model, such as Figure 2 and Figure 3 As shown, in order to further improve the installation efficiency and installation stability of the magnetic core assembly 200, guide plates 230 are also provided on the magnetic core assembly 200 at the positions corresponding to both ends of the housing 100. The guide plates 230 are set along a predetermined arc and are made of an elastic material, specifically a metal material with elasticity, such as iron. The guide plate 230 is fixedly connected to the connecting plate 212. Because the guide plate 230 has a certain curvature, the end of the magnetic core assembly 200 forms a smooth arc surface. This serves as a guide when the magnetic core assembly 200 is assembled into the housing 100. Simultaneously, the arc surface of the guide plate 230 also provides elasticity. When the magnetic core assembly 200 is installed into the housing 100, the inner wall of the housing 100 compresses the guide plate 230, causing it to undergo slight elastic deformation and exert pressure on the inner wall of the housing 100. This elastic pressure limits the movement of the magnetic core assembly 200 and provides a buffer and stress dispersion effect when the housing 100 is subjected to impacts, effectively preventing damage to the magnetic core assembly 200 due to excessive force. The guide plate 230 also simplifies the installation process of the magnetic core assembly 200 and improves installation efficiency. In actual operation, the magnetic core assembly 200 is simply pushed into the housing 100 along the arc of the guide plate 230, and the guide plate 230 can guide the magnetic core assembly 200 to the predetermined position accurately and quickly, without the need for cumbersome adjustments and positioning operations. In addition, the fixed connection between the guide plate 230 and the connecting plate 212 enhances the overall structural strength of the magnetic core assembly 200, making it more stable and reliable during use.

[0051] Based on the above embodiments, the actual installation process of the leakage-proof matrix magnetic sensor assembly of this utility model is as follows:

[0052] First, the first magnetic core module 210 and the second magnetic core module 220 are respectively fitted into the inner cavities of the housing 100 on both sides of the partition 300, ensuring that the magnetic head 211 corresponds to the clearance groove 110 on the top plate of the housing 100. During installation, the support part 214 in the magnetic core module cooperates with the assembly groove 120 of the housing 100 to form a preliminary snap-fit ​​connection. During installation, the guide plate 230 can also be used to guide the magnetic core assembly 200 along the arc direction of the guide plate 230 into the housing 100, and the guide plate 230 will guide the magnetic core assembly 200 to accurately and quickly reach the predetermined position.

[0053] Subsequently, the encapsulation layer 400 is injected into the space between adjacent support portions 214. After the encapsulation layer 400 cures, it will wrap around the magnetic core module and form a firm engagement with the protruding structure of the assembly groove 120 towards the inside of the housing 100, thereby further securing the magnetic core assembly 200. Finally, the magnetic core assembly 200 is checked to ensure it is securely installed and that the encapsulation layer 400 is completely wrapped, ensuring the assembly quality and performance of the leakage-proof matrix magnetic sensor assembly.

[0054] The housing 100 of the matrix magnetic sensor assembly with anti-magnetic leakage formed by the above-mentioned installation structure is complete, without openings on both sides, and can form a stable snap-fit ​​installation with the magnetic core assembly 200 through the cooperation of the mounting groove. When applied to magnetic signal acquisition devices such as banknote detectors, the housing 100 can isolate the strong magnetic structures installed on both sides, and will not cause magnetic leakage or noise problems under long-term use, effectively improving the service life.

[0055] In summary, this utility model provides a matrix magnetic sensor assembly with anti-magnetic leakage capability. The assembly includes: a housing, integrally formed, with a recessed groove on the top plate and several assembly grooves stamped on opposite side walls, protruding towards the inner cavity of the housing; and a magnetic core assembly, fitted into the inner cavity of the housing, with the magnetic head corresponding to the recessed groove, and both sides of the magnetic core assembly engaging with the assembly grooves. This utility model, by using an integrally formed housing and stamping inwardly protruding assembly grooves on opposite side walls to secure the magnetic core assembly, achieves stable installation of the magnetic core assembly without the need for opening holes. This avoids magnetic leakage that might occur at the strong magnetic contact points on both sides of the banknote detector magnetic head, prevents noise issues, and improves the lifespan of the magnetic head.

[0056] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A flux leakage magnetic matrix magnetic sensor assembly, characterized by, The leakage-proof matrix magnetic sensor assembly includes: The housing is integrally formed. A clearance groove is hollowed out on the top plate of the housing. Several assembly grooves are stamped on the opposite side walls of the housing, and the assembly grooves protrude toward the inner cavity of the housing. A magnetic core assembly is fitted into the inner cavity of the housing. The magnetic head in the magnetic core assembly is arranged corresponding to the clearance groove. Both sides of the magnetic core assembly are engaged with the assembly groove.

2. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 1, characterized in that, A partition is provided in the inner cavity of the housing. The partition is located in the middle of the length direction of the housing and is arranged perpendicular to the length direction of the housing. The magnetic core assembly includes a first magnetic core module and a second magnetic core module arranged in a mirror image. The first magnetic core module is fitted into the inner cavity of the housing on one side of the partition, and the second magnetic core module is fitted into the inner cavity of the housing on the other side of the partition.

3. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 2, characterized in that, The first magnetic core module includes: The magnetic head, a plurality of the magnetic heads are connected in a row; A connecting plate is provided, with two connecting plates symmetrically arranged on both sides of a plurality of magnetic heads, and the connecting plates are fixedly connected to the magnetic heads.

4. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 3, characterized in that, The connecting plate is provided with screw holes corresponding to the position of the magnetic head, and the connecting plate includes a plurality of screws, which pass through the screw holes and are fixedly connected to the magnetic head.

5. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 4, characterized in that, The connecting plate is provided with a plurality of support portions protruding from it. The plurality of support portions are evenly arranged at a predetermined distance, and the support portions are arranged to avoid the screw holes. When the first magnetic core module is fitted into the inner cavity of the housing, the support portion abuts against the corresponding side wall of the housing.

6. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 5, characterized in that, The support portion is configured to avoid the assembly slot; An encapsulation layer is provided on the outside of the first magnetic core module. The encapsulation layer is filled and wrapped around the first magnetic core module along the position between adjacent support portions, and engages with the protruding structure of the assembly groove.

7. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 6, characterized in that, The encapsulation layer is made of resin.

8. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 5, characterized in that, The housing includes a limiting part, which is symmetrically arranged on both sides of the top plate of the housing and connected to the two side walls of the housing at a predetermined angle. The position of the limiting part on the connecting plate is set at the predetermined angle, and the side of the supporting part facing the limiting part is chamfered with a certain arc.

9. The matrix magnetic sensor assembly with anti-magnetic leakage as described in claim 8, characterized in that, The limiting part is stamped with a plurality of limiting grooves, which protrude toward the inner cavity of the housing. The limiting grooves are used to limit the assembly position of the magnetic core assembly.

10. The matrix magnetic sensor assembly for preventing magnetic leakage according to claim 1, characterized in that, The magnetic core assembly includes guide plates disposed at both ends of the housing, the guide plates being disposed along a predetermined arc, and the guide plates being elastic guide plates.

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