A magnetic head installation method, structure and card reading device

Abstract

The present invention relates to the technical field of card reading or swiping devices, and discloses a magnetic head mounting method, structure, and card reading device. The method comprises the following steps: punching out an inner region of an elastic metal sheet to form a magnetic head mounting plate, wherein a pair of sides of the magnetic head mounting plate are provided with connecting surfaces, and another pair of sides are provided with mounting arms, and the mounting arms are provided in the inner region of the magnetic head mounting plate; folding the connecting surfaces upward to form connecting ears; folding the mounting arms upward to form C-shaped bent mounting arms, so as to form the magnetic head mounting plate into a magnetic head mounting bracket; mounting the magnetic head on the magnetic head mounting bracket; opening a mounting window on a circuit board, and opening second mounting holes on both sides of the mounting window; mounting the magnetic head mounting bracket with the magnetic head mounted thereon into the mounting window of the circuit board; and fixing the magnetic head mounting bracket to the circuit board with screws. This method can reduce the manufacturing cost of the card reading or swiping device and improve the success rate and service life of the card swiping device.

Description

Technical Field

[0001] The present invention relates to the technical field of card reading or card swiping equipment, and in particular to a magnetic head installation method and structure and a card reading equipment. Background Art

[0002] Magnetic cards are a common recording medium in daily life. They record characters and digital information on magnetic carriers to identify identity or for other purposes. The information recorded on the magnetic card needs to be read by a card reader or card swiping device with a magnetic head. In order to make the product lighter and more portable, the existing small card reader or card swiping device often uses SMT (surface mount technology) to mount the magnetic head on the circuit board. Figure 1 As shown, however, since SMT heads require soldering the head pins and the bottom surface of the housing to the pads of the circuit board during installation, high coplanarity requirements are imposed on the individual track pins of the head and the bottom surface of the housing. This greatly increases the difficulty of SMT head production and requires increased costs for jig equipment and testing tools to achieve high-precision coplanarity requirements, increasing the production cost of SMT heads. Furthermore, since SMT heads are rigidly fixed to the circuit board through welding, they are subject to the squeezing force of the magnetic card when swiping a card. On the one hand, there is a risk of tin cracking at the solder joints between the head and the circuit board. On the other hand, due to the lack of an elastic deformation mechanism between the head and the circuit board, the contact pressure between the magnetic card and the head is not ideal, which not only affects the success rate of card swiping, but also reduces the life of the head. Furthermore, during the manufacturing or after-sales process of the equipment, SMT heads are difficult to disassemble and assemble, resulting in high rework and after-sales costs. Therefore, it is necessary to design a new head installation method to replace SMT heads. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a magnetic head installation method, which is used to replace the existing SMT installation method without increasing the installation thickness, reducing manufacturing, rework and after-sales costs while improving service life and card swiping success rate.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: A magnetic head installation method includes the following steps:

[0005] A magnetic head mounting plate is formed by punching out an inner region of a resilient metal sheet, wherein a pair of sides of the magnetic head mounting plate are provided with connection surfaces for connecting a magnetic head, and another pair of sides of the magnetic head mounting plate are provided with mounting arms, and ends of the mounting arms are provided with first mounting holes, and the mounting arms are arranged in the inner region of the magnetic head mounting plate;

[0006] Fold the connecting surface upward to form a connecting ear that stands upright on the magnetic head mounting plate;

[0007] The mounting arm is folded upward to form a C-shaped bent mounting arm, so that a window for inserting the magnetic head is formed inside the magnetic head mounting plate. The height of the internal space of the bent mounting arm matches the thickness of the circuit board, so that the magnetic head mounting plate is formed into a magnetic head mounting bracket.

[0008] Place the magnetic head into the window of the magnetic head mounting bracket and connect the two sides of the magnetic head to the two connecting ears respectively;

[0009] A mounting window matching the magnetic head mounting bracket is provided at a preset magnetic head mounting position on the circuit board, and second mounting holes are provided on both sides of the mounting window;

[0010] Installing the magnetic head mounting bracket with the magnetic head mounted thereon into the mounting window of the circuit board so that the first mounting hole is aligned with the second mounting hole;

[0011] The magnetic head mounting bracket on which the magnetic head is mounted is fixedly connected to the circuit board by screws.

[0012] Compared with the prior art, the present invention has the following advantages: when installing the magnetic head through this method, since the magnetic head is set in the installation window of the circuit board through the magnetic head mounting bracket, rigid welding between the magnetic head and the circuit board is avoided, and the bottom surface of the magnetic head shell and the end of the welding pin do not need to be coplanar, which reduces the manufacturing precision of the magnetic head and thus reduces the production cost of the magnetic head. The magnetic head mounting bracket is connected to the circuit board through a bent mounting arm. When the magnetic head is squeezed by the magnetic card during the card swiping process, the bent mounting arm can deform, providing a reverse elastic force to the magnetic head, ensuring that there is ideal contact pressure between the magnetic head and the magnetic card, thereby ensuring the success rate of the magnetic card swiping and avoiding damage to the magnetic head or the magnetic card due to excessive pressure between the magnetic head and the magnetic card. Since there is no rigid welding between the magnetic head and the circuit board, tin cracking is not easily caused by the pressure of the magnetic card on the magnetic head when swiping the card. In addition, when defective products are produced or damaged after sale and use, the magnetic head is easy to replace because the magnetic head mounting bracket is connected to the circuit board by screws.

[0013] The above-mentioned magnetic head mounting method, after the step of mounting the magnetic head mounting bracket with the magnetic head mounted thereon into the mounting window of the circuit board so that the first mounting hole is aligned with the second mounting hole, further comprises:

[0014] Insert the safety sheet between the bent mounting arm and the circuit board.

[0015] In the above-mentioned magnetic head mounting method, the step of mounting the magnetic head mounting bracket with the magnetic head mounted thereon into the mounting window of the circuit board so that the first mounting hole is aligned with the second mounting hole comprises:

[0016] Slide the left bent mounting arm into the mounting window on the circuit board, so that the left edge of the mounting window enters the inner space of the left bent mounting arm;

[0017] Push the head mounting bracket to continue sliding to the left into the mounting window, and slightly deform the bent mounting arm on the left side so that the right side of the head mounting bracket can enter the mounting window;

[0018] The position of the magnetic head mounting bracket embedded in the mounting window is restored to the center of the mounting window, so that the first mounting holes on the two bent mounting arms are aligned with the second mounting holes on both sides of the mounting window.

[0019] The above-mentioned magnetic head installation method further includes the steps of:

[0020] The magnetic head on the magnetic head mounting bracket is electrically connected to the flexible circuit board through the flexible circuit board.

[0021] A head mounting structure includes a head, a head mounting bracket and a circuit board, wherein a mounting window is provided at a preset mounting position of the circuit board, and the head is embedded in the mounting window through the head mounting bracket, the head mounting bracket includes a frame, a pair of sides of the frame are provided with connecting ears, the head is connected to the frame through the connecting ears, and the other pair of sides of the frame are provided with C-shaped bent mounting arms, the openings of the bent mounting arms face outward, the ends of the bent mounting arms are provided with first mounting holes, and second mounting holes are provided on both sides of the mounting window, the side edges of the mounting window respectively extend into the two bent mounting arms, so that the first mounting holes of the two bent mounting arms are respectively aligned with the second mounting holes on both sides of the mounting window, and the bent mounting arms are fixedly connected to the circuit board by passing screws through the first mounting holes and the second mounting holes.

[0022] The above-mentioned head mounting structure also includes a safety protection plate, which is arranged between the bent mounting arm and the circuit board. The safety protection plate is used to block the gap between the frame and the magnetic head. The safety protection plate is provided with a third mounting hole for passing a screw, and an avoidance groove for avoiding the bent mounting arm.

[0023] The above-mentioned magnetic head mounting structure further includes a flexible circuit board, and the magnetic head is electrically connected to the circuit board via the flexible circuit board.

[0024] In the above-mentioned magnetic head mounting structure, the shapes of the first mounting holes on the two bent mounting arms are different.

[0025] In the above-mentioned magnetic head mounting structure, both sides of the frame body provided with the bent mounting arms are provided with S-shaped reinforcement structures, and the S-shaped reinforcement structures are provided on both sides of the corresponding bent mounting arms.

[0026] A card reading or swiping device comprises the above-mentioned magnetic head mounting structure.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the installation of an existing SMT head.

[0029] Figure 2 FIG. 4 is a flow chart of a magnetic head installation method according to an embodiment of the present invention.

[0030] Figure 3 Schematic diagram of the structure of a magnetic head mounting plate according to an embodiment of the present invention.

[0031] Figure 4 Schematic diagram of the structure of a magnetic head mounting bracket according to an embodiment of the present invention.

[0032] Figure 5 Schematic diagram of the installation process of the magnetic head, the magnetic head mounting bracket and the circuit board according to an embodiment of the present invention.

[0033] Figure 6 FIG. 1 is a top view of a magnetic head mounting structure according to an embodiment of the present invention.

[0034] Figure 7 FIG. 1 is a bottom view of the magnetic head mounting structure according to an embodiment of the present invention.

[0035] Figure 8 2 is a cross-sectional view of a magnetic head mounting structure according to an embodiment of the present invention.

[0036] Figure 9 Schematic diagram of the structure of a safety protection sheet according to an embodiment of the present invention.

[0037] Figure 10 This is a schematic diagram of the magnetic head mounting structure according to an embodiment of the present invention when a card is swiped.

[0038] Description of Figure Numbers:

[0039] 100 magnetic head, 200 circuit board, 210 second mounting hole, 220 connector, 230 mounting window, 300 magnetic head mounting plate, 301 mounting arm, 302 connecting surface, 303 reinforcement structure, 310 magnetic head mounting bracket, 311 bent mounting arm, 3111 first mounting hole, 312 connecting ear, 400 safety protection plate, 410 third mounting hole, 420 avoidance groove, 500 FPC, 600 magnetic card. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below. Figures 6 to 8An embodiment of the present invention provides a magnetic head mounting structure, comprising a magnetic head 100, a magnetic head mounting bracket 310, and a circuit board 200. The circuit board 200 can be a main circuit board or a circuit board with independent functions. The circuit board 200 has an installation window 230 at a predetermined installation position for the magnetic head 100. The size of the installation window 230 matches the size of the magnetic head mounting bracket 310, and the magnetic head 100 is embedded in the installation window 230 via the magnetic head mounting bracket 310. The magnetic head mounting bracket 310 includes a frame, and a pair of sides of the frame are provided with connecting ears 312 for connecting to the magnetic head 100, and the other pair of sides of the frame are provided with C-shaped bent mounting arms 311. The opening of the bent mounting arm 311 faces outward, and a first mounting hole 3111 is provided at the end of the bent mounting arm 311. Second mounting holes 210 are provided on both sides of the mounting window 230. The edges of both sides of the mounting window 230 will respectively extend into the C-shaped space of the two bent mounting arms 311, so that the first mounting hole 3111 and the second mounting hole 210 are aligned, so that the head mounting bracket 310 can be fixedly connected to the circuit board 200 by passing screws through the first mounting hole 3111 and the second mounting hole 210.

[0041] This head mounting structure, since the head 100 is embedded in the mounting window 230 of the circuit board 200 through the head mounting bracket 310, will not significantly increase the thickness of the overall structure after the head 100 is installed, compared with the SMT mounting method of the head 100. At the same time, it avoids direct rigid welding of the head 100 and the circuit board 200, and does not require the bottom surface of the shell of the head 100 and the end of the pin to be coplanar with high precision, which reduces the production requirements of the head 100 and thus reduces the installation cost of the head 100. When swiping the card, when the head 100 is subjected to pressure, the head 100 will not be disconnected from the circuit board 200 due to tin cracking, and since the end of the C-shaped bent mounting arm 311 is screwed to the circuit board 200 and cannot move, the C-shaped bent mounting arm 311 and the frame of the bracket can be deformed under the action of pressure, such as Figure 10 As shown, a reverse elastic force is applied to the magnetic head 100, ensuring that there is an ideal pressure between the magnetic head 100 and the magnetic card 600, ensuring that the magnetic head 100 can read the information stored in the magnetic medium of the magnetic card 600, and ensuring the success rate of card swiping. In addition, under the elastic action of the C-shaped bent mounting arm 311, it is also possible to avoid excessive pressure between the magnetic head 100 and the magnetic card 600, which would cause serious wear of the magnetic head 100 or the magnetic card 600 during the card swiping process, thereby extending the service life of the magnetic head 100. After the card swiping is completed, the bracket will return to its initial position under the action of elasticity. The magnetic head mounting bracket 310 is mounted on the circuit board 200 by screws. When defective products appear during the production process, or when damage or abnormalities occur after sale and use, the magnetic head 100 is easy to disassemble and assemble, and is easy to replace, reducing the rework and maintenance costs of the reading or swiping device.

[0042] It is understood that the bent mounting arm 311 and the connecting ear 312 can be integrally formed with the frame, and the magnetic head mounting plate 300 can be manufactured by punching out a metal sheet and then folding it, or it can be punched and forged separately and then welded to the frame. The connecting ear 312 can be fixedly connected to the side of the magnetic head 100 by snapping, welding, or laser welding. The magnetic head 100 can be electrically connected to the circuit board 200 via flying wires or FPC 500 to convert the detected magnetic field changes in the magnetic stripe of the magnetic card 600 into electrical signals and transmit them to the circuit board 200 for the control circuit to analyze the information stored in the magnetic card 600. In this embodiment, the head mounting bracket 310 adopts an integrated molding solution, the connecting ear 312 is fixedly connected to the head 100 by laser welding, a connector 220 is provided on the circuit board 200, and an FPC500 (flexible circuit board) is welded on the bottom surface of the head 100. A conductive contact is provided at the other end of the FPC500. The FPC500 on the bottom surface of the head 100 realizes electrical connection between the head 100 and the circuit board 200 by inserting the conductive contact into the connector 220.

[0043] In some possible implementations, in order to save costs, refer to Figure 3 , the unfolded mounting arm 301 on the head mounting plate 300 is arranged on the inner side of the frame, thereby reducing the area of ​​the punched material, saving raw materials, and further reducing the manufacturing cost of the card reading or swiping device. Normally, in order to facilitate the installation of the magnetic head 100 and to fold the mounting arm 301 on the head mounting plate 300 upward and outward into a bent mounting arm 311, the size of the frame is usually slightly wider than the width of the magnetic head 100, resulting in a certain gap between the magnetic head 100 and the frame after the magnetic head 100 is installed on the magnetic head mounting bracket 310. In some possible embodiments, in order to prevent foreign matter from entering the interior of the device through the gap between the magnetic head 100 and the frame, the head mounting structure also includes two safety protection sheets 400, such as Figure 6 and Figure 8 As shown, the safety protection sheet 400 is set between the bent mounting arm 311 and the circuit board 200. The safety protection sheet 400 can block the gap between the magnetic head 100 and the frame to prevent foreign matter from entering and protect the internal structure of the device. It is understandable that the safety protection sheet 400 can be set between the end of the bent mounting arm 311 and the upper surface of the circuit board 200, or between the root of the bent mounting arm 311 and the lower surface of the circuit board 200. Figure 6 In this embodiment, the safety protection sheet 400 is disposed between the end of the bent mounting arm 311 and the upper surface of the circuit board 200. Figure 9The safety sheet 400 is a thin, rectangular sheet with a third mounting hole 410. During installation, the third mounting hole 410 must be aligned with the first mounting hole 3111 and the second mounting hole 210 on the corresponding side. Screws can then be inserted sequentially through the first mounting hole 3111, the third mounting hole 410, and the second mounting hole 210 to secure the safety sheet 400 between the end of the bent mounting arm 311 and the upper surface of the circuit board 200. A relief groove 420 is provided on the side of the safety sheet 400 facing the magnetic head 100, through which the bent mounting arm 311 passes. This provides sufficient space for the bent mounting arm 311 to deform when the magnetic head 100 is subjected to pressure from the magnetic card 600.

[0044] Reference Figure 4 and Figure 6 Typically, in order to ensure that the elastic force of the bent mounting arms 311 acting on the magnetic head 100 is balanced when the card is swiped, the bent mounting arms 311 are preferably arranged on both sides of the mounting window 230 along the symmetry axis of the frame. In some special structural designs, the bent mounting arms 311 may also adopt an asymmetric design. In this embodiment, two bent mounting arms 311 are provided on the frame of the magnetic head mounting bracket 310, and the two bent mounting arms 311 are symmetrically arranged on the left and right sides of the frame. To facilitate distinguishing the directions, the first mounting holes 3111 on the two bent mounting arms 311 have different shapes. In this embodiment, the first mounting hole 3111 on the left bent mounting arm 311 is oval, and the first mounting hole 3111 on the right bent mounting arm 311 is circular. It is understandable that the first mounting hole 3111 and the third mounting hole 410 can be closed holes or semi-open groove-shaped holes. The second mounting hole 210 can be a threaded hole with an internal thread or a plain hole. The screw cooperates with the nut to fix the magnetic head mounting bracket 310 and the safety protection sheet 400 on the circuit board 200 .

[0045] In some possible embodiments, in order to prevent the frame from being permanently deformed or broken due to factors such as metal fatigue after long-term use, the frame is provided with a reinforcement structure 303 on both sides of the frame where the bent mounting arm 311 is provided. Figure 4 The reinforcement structure 303 is S-shaped, with two reinforcement structures 303 provided on the left and right sides of the frame, and the two reinforcement structures 303 are provided on the front and back sides of the bending mounting arm 311 on the same side. The S-shaped reinforcement structure 303 can enhance the connection strength between the bending mounting arm 311 and the frame, prolonging the service life. At the same time, it has a certain elasticity, which can further improve the elastic deformation ability of the bending mounting arm 311, further prolong the service life of the magnetic head 100, and improve the success rate of card swiping. In this embodiment, referring to Figure 8In the initial position, the frame of the head mounting bracket 310 does not contact the circuit board 200 and the nut embedded in the second mounting hole 210, so as to further reduce the installation height of the magnetic head 100.

[0046] Reference Figure 2 The magnetic head mounting structure of the embodiment of the present invention is manufactured and mounted by the following steps:

[0047] First, to make the magnetic head mounting bracket 310, the elastic metal sheet is punched out according to the designed shape to form the following Figure 3 The head mounting plate 300 is shown. The head mounting plate 300 is a frame structure with mounting arms 301 provided on both the left and right sides. The mounting arms 301 are disposed inside the frame structure to improve the utilization of raw materials and save manufacturing costs. The ends of the mounting arms 301 are provided with first mounting holes 3111. The upper and lower sides of the head mounting plate 300 are provided with connection surfaces 302 for connecting to the magnetic head 100.

[0048] After punching, the head mounting piece 300 needs to be bent to make the head mounting piece 300 into a head mounting bracket 310. The bending operation includes folding the connecting surface 302 areas on the upper and lower sides of the head mounting piece 300 upward to form a pair of connecting ears 312 perpendicular to the frame part, and also includes folding the two mounting arms 301 in the frame upward and outward so that the end of the mounting arm 301 is flipped 180 degrees, and the plane where the first mounting hole 3111 at the end of the mounting arm 301 is located is parallel to the frame, forming a C-shaped bent mounting arm 311 with an opening facing outward, and leaving the internal space of the frame empty, so that a window that can accommodate the head 100 is formed in the frame. It can be understood that the bending section of the bent mounting arm 311 can be an arc-shaped or an open square frame with a fold. In this embodiment, the bending section of the bent mounting arm 311 adopts an arc-shaped transition form with better elasticity. The head mounting bracket 310 after bending is as follows Figure 4 shown.

[0049] After the head mounting bracket 310 is manufactured, the head 100 needs to be installed in the internal window of the frame of the head mounting bracket 310. In this embodiment, the head 100 is installed on the head mounting bracket 310 by laser welding. First, the relative positions of the head 100 and the head mounting bracket 310 are fixed by a mold, and then a laser of a certain power is used to heat the joints between the connecting ears 312 and the sides of the head 100 so that the metal at the joints melts into one. After cooling, the front and back sides of the head 100 can be fixedly connected to the two connecting ears 312.

[0050] While manufacturing the magnetic head mounting bracket 310, the mounting window 230 can be simultaneously created on the circuit board 200. The mounting window 230 can be created using laser cutting or a small precision milling machine for PCBs. The second mounting holes 210 on either side of the mounting window 230 can also be created using a laser or a small precision drilling machine. After the second mounting holes 210 are created, internal threads can be tapped into them, or nuts can be directly inserted into the second mounting holes 210 to facilitate screw installation. In this embodiment, the second mounting holes 210 utilize internally inserted nuts.

[0051] After the installation window 230 of the circuit board 200 is opened and the magnetic head 100 is connected to the magnetic head mounting bracket 310, the magnetic head mounting bracket 310 with the magnetic head 100 mounted thereon needs to be installed into the installation window 230. Figure 5 After the bracket 310 is installed, the first mounting hole 3111 is aligned with the second mounting hole 310, and the first mounting hole 3111 and the second mounting hole 310 are aligned.

[0052] After the head mounting bracket 310 is installed, to prevent foreign matter from entering the device through the gap between the magnetic head 100 and the head mounting bracket 310, it is necessary to insert the safety plate 400 between the end of the bent mounting arm 311 and the upper surface of the circuit board 200. The third mounting hole 410 on the safety plate 400 is aligned with the first mounting hole 3111 and the second mounting hole 210 on the same side, and the bent mounting arm 311 is inserted into the avoidance groove 420 of the safety plate 400 on the same side. This allows the safety plate 400 to block the gap between the magnetic head 100 and the frame of the head mounting bracket 310. After the initial installation of the head mounting bracket 310 and the safety plate 400 is completed, the screw can be tightened into the nut in the second mounting hole 210 to ensure that the end of the bent mounting arm 311, the safety plate 400, and the circuit board 200 are tightly fitted, thereby fixing the head mounting bracket 310 and the safety plate 400 to the circuit board 200.

[0053] Finally, the circuit board 200 is electrically connected to the magnetic head 100 to complete the installation of the magnetic head 100. In this embodiment, to facilitate the removal and replacement of the magnetic head 100, the magnetic head 100 is electrically connected to the circuit board 200 via an FPC (flexible printed circuit) 500. A connector 220 is provided on the lower surface of the circuit board 200. One end of the FPC 500 is pre-soldered to the pins of the magnetic head 100, and the other end of the FPC 500 is provided with a conductive contact. The electrical connection between the magnetic head 100 and the circuit board 200 is completed by inserting the conductive contact of the FPC 500 into the connector 220. It is understood that in some embodiments, to further enhance the convenience of the removal and replacement of the magnetic head 100, the FPC 500 can also be connected to the pins of the magnetic head 100 via a connector.

[0054] Based on the same inventive concept, embodiments of the present invention further provide a card reader or card swiping device including the aforementioned magnetic head mounting structure. By utilizing the aforementioned magnetic head mounting structure, the card reader or card swiping device can reduce production costs without increasing the installation height of the magnetic head 100, while also extending the service life of the magnetic head 100 and improving the product's card swiping success rate. Furthermore, the magnetic head 100 is easily disassembled and assembled, facilitating the rework of defective products during production and post-sale repair or maintenance, further reducing the product's production and maintenance costs.

[0055] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.

[0056] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0057] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0058] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A magnetic head installation method, characterized in that: The steps include: A magnetic head mounting plate (300) is formed by punching out an inner region of an elastic metal sheet, wherein a pair of sides of the magnetic head mounting plate (300) are provided with connection surfaces (302) for connecting to the magnetic head (100), and another pair of sides of the magnetic head mounting plate (300) are provided with mounting arms (301), and a first mounting hole (3111) is provided at a distal end of the mounting arm (301), and the mounting arm (301) is arranged in an inner region of the magnetic head mounting plate (300); The connecting surface (302) is folded upward to form a connecting ear (312) vertically arranged on the magnetic head mounting plate (300); The mounting arm (301) is folded upward to form a C-shaped bent mounting arm (311), with the opening of the bent mounting arm (311) facing outward, so that a window is formed inside the magnetic head mounting plate (300) into which the magnetic head (100) can be embedded, and the height of the internal space of the bent mounting arm (311) matches the thickness of the circuit board (200), so that the magnetic head mounting plate (300) is made into a magnetic head mounting bracket (310); Place the magnetic head (100) into the window of the magnetic head mounting bracket (310), and connect the two sides of the magnetic head (100) to the two connecting ears (312) respectively; A mounting window (230) matching the magnetic head mounting bracket (310) is provided at a preset magnetic head (100) mounting position on the circuit board (200), and second mounting holes (210) are provided on both sides of the mounting window (230); The magnetic head mounting bracket (310) on which the magnetic head (100) is mounted is mounted into the mounting window (230) of the circuit board (200), so that the two side edges of the mounting window (230) respectively enter the C-shaped internal space of the left and right bent mounting arms (311), and the first mounting hole (3111) is aligned with the second mounting hole (210); The magnetic head mounting bracket (310) on which the magnetic head (100) is mounted is fixedly connected to the circuit board (200) by screws.

2. The magnetic head mounting method according to claim 1, wherein: After the step of installing the magnetic head mounting bracket (310) on which the magnetic head (100) is mounted into the mounting window (230) of the circuit board (200) so that the first mounting hole (3111) is aligned with the second mounting hole (210), the method further comprises: A safety protection sheet (400) is inserted between the bent mounting arm (311) and the circuit board (200).

3. The magnetic head mounting method according to claim 1, wherein: The step of installing the magnetic head mounting bracket (310) on which the magnetic head (100) is mounted into the mounting window (230) of the circuit board (200) so that the first mounting hole (3111) is aligned with the second mounting hole (210) comprises: Slide the left bent mounting arm (311) into the mounting window (230) on the circuit board (200), so that the left edge of the mounting window (230) enters the inner space of the left bent mounting arm (311); Push the magnetic head mounting bracket (310) to continue to slide leftward into the mounting window (230), and slightly deform the bent mounting arm (311) on the left side so that the right side of the magnetic head mounting bracket (310) can enter the mounting window (230); The position of the magnetic head mounting bracket (310) embedded in the mounting window (230) is restored to the center of the mounting window (230), so that the first mounting holes (3111) on the two bent mounting arms (311) are aligned with the second mounting holes (210) on both sides of the mounting window (230).

4. The magnetic head mounting method according to claim 1, wherein: Also includes the steps: The magnetic head (100) on the magnetic head mounting bracket (310) is electrically connected to the flexible circuit board (500) via the flexible circuit board (500).

5. A magnetic head mounting structure, characterized in that: The invention comprises a magnetic head (100), a magnetic head mounting bracket (310) and a circuit board (200), wherein a mounting window (230) is provided at a preset mounting position of the circuit board (200), and the magnetic head (100) is embedded in the mounting window (230) through the magnetic head mounting bracket (310), and the magnetic head mounting bracket (310) comprises a frame, and connecting ears (312) are provided on a pair of sides of the frame, and the magnetic head (100) is connected to the frame through the connecting ears (312), and a C-shaped bent mounting arm (311) is provided on the other pair of sides of the frame, and the opening of the bent mounting arm (311) faces outward. On the side, the end of the bent mounting arm (311) is provided with a first mounting hole (3111), and the two sides of the mounting window (230) are provided with second mounting holes (210), and the two side edges of the mounting window (230) respectively extend into the two bent mounting arms (311), so that the first mounting holes (3111) of the two bent mounting arms (311) are respectively aligned with the second mounting holes (210) on both sides of the mounting window (230), and the bent mounting arm (311) is fixedly connected to the circuit board (200) by passing screws through the first mounting hole (3111) and the second mounting hole (210).

6. The magnetic head mounting structure according to claim 5, wherein: The invention also includes a safety protection sheet (400), which is arranged between the bent mounting arm (311) and the circuit board (200), and is used to block the gap between the frame and the magnetic head (100). The safety protection sheet (400) is provided with a third mounting hole (410) for passing a screw, and an avoidance groove (420) for avoiding the bent mounting arm (311).

7. The magnetic head mounting structure according to claim 5, wherein: It also includes a flexible circuit board (500), and the magnetic head (100) is electrically connected to the circuit board (200) via the flexible circuit board (500).

8. The magnetic head mounting structure according to claim 5, wherein: The shapes of the first mounting holes (3111) on the two bent mounting arms (311) are different.

9. The magnetic head mounting structure according to claim 5, wherein: The frame is provided with a pair of S-shaped reinforcement structures (303) on both sides of the bent mounting arm (311), and the S-shaped reinforcement structures (303) are arranged on both sides of the corresponding bent mounting arm (311).

10. A card reading device, characterized in that: The magnetic head mounting structure comprises the magnetic head mounting structure according to any one of claims 5 to 9.

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