Financial equipment, ultrathin magnetic head and manufacturing method of ultrathin magnetic head

Abstract

The invention discloses financial equipment, an ultra-thin magnetic head and a manufacturing method of the ultra-thin magnetic head, the ultra-thin magnetic head comprises a shell, a PCB connected to the bottom of the shell and at least one group of monorail assembly assembled between the shell and the PCB, and the monorail assembly comprises two groups of magnetic sheets, two groups of hollow coils and a positioning frame. The hollow coil with the first pin and the second pin is wound at the tail part of the magnetic sheet, so that a winding product structure which takes a framework as a carrier and takes a pin as an electrical leading-out end in the existing magnetic head can be replaced, and the primary positioning and supporting between the two groups of magnetic sheets can be realized by directly adopting a positioning frame after the structure is reduced and assembled. Therefore, according to the magnetic head, a framework, a pin and an elastic sheet structure in an existing magnetic head can be omitted, the height space of the magnetic head occupied by the parts is reduced, the height of the whole magnetic head can be reduced while the heights of the parts in the magnetic head are not excessively reduced, and meanwhile the effects of reducing the height of the magnetic head and ensuring the performance of the magnetic head are considered.

Description

Technical Field

[0001] The present invention relates to the technical field of financial equipment, and in particular to a financial equipment, an ultra-thin magnetic head and a method for manufacturing the ultra-thin magnetic head. Background Art

[0002] An existing magnetic head structure is as follows Figure 1 As shown, the magnetic head includes components such as a left magnetic sheet group, a right magnetic sheet group, a spring, a winding product, a gap piece, and a shell. Specifically, the winding product includes a skeleton, pins, and a winding product. The pins are inserted on both sides of the skeleton, and the winding product is wound on the skeleton, and the beginning and end of the winding product are respectively wound and welded on the pins on both sides of the skeleton. In order to ensure that the various components inside the magnetic head can be easily assembled and tightly matched, the tails of the left magnetic sheet group and the right magnetic sheet group are respectively inserted into the hollow structures at the left and right ends of the winding product skeleton, and the gap piece is abutted between the heads of the left magnetic sheet group and the right magnetic sheet group, and the left magnetic sheet group, the right magnetic sheet group, and the winding product are all assembled and fixed on the spring and fixed in the shell together with the spring. The height of the assembled components such as the left magnetic sheet group, the right magnetic sheet group, the spring, and the winding product determines the height of the magnetic head.

[0003] The current market demand for ultra-thin magnetic heads is increasing day by day, because ultra-thin magnetic heads can save the assembly height in financial equipment such as POS machines, making the structure of financial equipment more streamlined. Therefore, magnetic head manufacturers are also working hard to develop ultra-thin magnetic heads to meet market demand. The more common design scheme at present is to thin the internal components of the magnetic head. Although this scheme can reduce the height of the magnetic head, it is also easy to reduce the reliability of the internal component structure of the magnetic head, resulting in reduced output performance of the magnetic head, and the internal parts of the magnetic head cannot be thinned indefinitely. Therefore, it is difficult for existing magnetic heads to simultaneously reduce the height of the magnetic head and ensure the performance of the magnetic head by thinning the height of the components. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide an ultra-thin magnetic head which can achieve the effects of reducing the height of the magnetic head and ensuring the performance of the magnetic head at the same time.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: an ultra-thin magnetic head, comprising a shell, a PCB connected to the bottom of the shell, and at least one group of monorail components assembled between the shell and the PCB, the monorail component comprising two groups of magnetic sheets, two groups of hollow coils respectively wound around the tails of the two groups of magnetic sheets, and a positioning frame positioned and connected between the two groups of magnetic sheets, the heads of the two groups of magnetic sheets are fixedly connected to each other, and the tails are also fixedly connected to each other, the hollow coil has a first pin and a second pin, the first pins of the two groups of hollow coils are connected to each other and fixedly connected to the positioning frame together, and the second pins of the two groups of hollow coils are both electrically connected to the PCB; the positioning frame comprises a main body, a first positioning portion located at the lower part of the main body, and a second positioning portion located on both sides of the top of the main body, the first positioning portion is used to position and connect the tails of the two groups of magnetic sheets, the head of the magnetic sheet has a lower side surface, and the second positioning portion is used to position and connect the lower side surfaces of the two groups of magnetic sheets.

[0006] Compared with the prior art, the beneficial effect of the present invention is that the magnetic head directly winds the hollow coil on the tail of the magnetic sheet, and adopts a positioning frame to realize the preliminary positioning and support between the two groups of magnetic sheets, so as to avoid the misalignment or separation of the magnetic sheets, and ensure that the internal components of the magnetic head can be easily assembled and tightly matched. The first pins of the two groups of hollow coils are connected to each other and fixedly connected to the positioning frame together to serve as the relay line of the coil, and the second pins are electrically connected to the PCB to realize the line conduction between each track coil and the PCB. The magnetic head adopts a hollow coil with a first pin and a second pin wound on the tail of the magnetic sheet, which can replace the winding product structure of the existing magnetic head with a skeleton as a carrier and pins as electrical lead-out ends. The reduced structure can directly adopt a positioning frame to realize the preliminary positioning and support between the two groups of magnetic sheets, and the first positioning part is used to position and connect the tails of the two groups of magnetic sheets, and the second positioning part is used to position and connect the lower side of the magnetic sheet, so as to ensure the compactness of the internal structure of the magnetic head and facilitate the subsequent manufacturing and forming of the magnetic head. Therefore, the magnetic head can eliminate the skeleton, pins and spring structures in the existing magnetic head, reduce the height space of the magnetic head occupied by these components, and can achieve the thinning of the height of the entire magnetic head without reducing the height of the internal components of the magnetic head too much. And because the skeleton and pins are eliminated, the hollow coil can almost completely cover the tail of the entire magnetic sheet, and the height reduction of the coil can be compensated by increasing the coil length, so that the cross-sectional size of the winding wire in the magnetic head is consistent with that in the existing magnetic head, and the effect of reducing the height of the magnetic head and ensuring the performance of the magnetic head can be taken into account at the same time. The height of the magnetic head can be significantly reduced, which can save the installation height of the magnetic head of financial equipment and has excellent performance.

[0007] The above-mentioned ultra-thin magnetic head, the head of the magnetic sheet also has a step surface and an upper side surface, the step surface is located between the lower side surface and the upper side surface of the magnetic sheet, the positioning frame also includes a third positioning portion located at the top of the main body, the third positioning portion is used to position the step surface connecting the two groups of magnetic sheets, and a gap sheet is abutted between the upper side surfaces of the two groups of magnetic sheets.

[0008] In the above-mentioned ultra-thin magnetic head, the first positioning portion and the second positioning portion are both positioning grooves, and the third positioning portion is a positioning plane.

[0009] In the above-mentioned ultra-thin magnetic head, the positioning frame is a "Y"-shaped frame or an "A"-shaped frame.

[0010] In the above-mentioned ultra-thin magnetic head, a positioning hole is provided on the PCB, a positioning boss and a limiting step are provided on the bottom of the magnetic sheet, the positioning boss is positioned and inserted into the positioning hole, and the limiting step is used to limit and isolate the PCB and the hollow coil.

[0011] The above-mentioned ultra-thin magnetic head, the shell is provided with an installation cavity for assembling the monorail component and a window passing through the installation cavity, the installation cavity has a first positioning surface, the magnetic sheet has a second positioning surface, the second positioning surface of the magnetic sheet is positioned to fit the first positioning surface of the shell, and the head of the magnetic sheet is exposed in the window of the shell.

[0012] The above-mentioned ultra-thin magnetic head, the single-rail assembly is provided with one group, two groups or three groups.

[0013] The present invention also provides a financial device, comprising the above-mentioned ultra-thin magnetic head, which at least has all the beneficial effects that can be brought by the above-mentioned ultra-thin magnetic head.

[0014] The present invention also provides a method for manufacturing an ultra-thin magnetic head, which is used to manufacture the ultra-thin magnetic head, comprising the following steps: Step S100, providing magnetic sheets, hollow coils, positioning frames and gap sheets, winding the left and right groups of hollow coils around the tails of the left and right groups of magnetic sheets respectively, inserting the positioning frames between the left and right groups of magnetic sheets, and making the heads of the left and right groups of magnetic sheets clamp the gap sheets, and the tails abut against each other, to obtain a preassembled monorail assembly; Step S200, placing the preassembled monorail assembly into a jig for positioning, and pressing it on the left and right sides, welding and fixing the head and tail of the left and right groups of magnetic sheets, and welding and fixing the first pins of the left and right groups of hollow coils to each other on a positioning frame, to obtain a monorail assembly fixed as a whole; Step S300, providing a PCB and at least one set of monorail components fixed as a whole, assembling the monorail components on the PCB, and soldering the second pins of the left and right sets of hollow coils to the lead wire pads of the PCB; Step S400, providing a housing, and installing the PCB assembled with the monorail assembly into the housing; Step S500, applying film protection to the welding surface of the PCB, and shallowly injecting glue into the inside of the shell through the glue injection hole of the PCB; Step S600, performing arc surface grinding; Step S700, providing an FPC, installing the FPC into a housing, and performing hot-press welding on the FPC and the PCB; Step S800: inject glue into the shell for the second time to obtain the required magnetic head.

[0015] The manufacturing method is used to manufacture the above-mentioned ultra-thin magnetic head, which at least has all the beneficial effects that the above-mentioned ultra-thin magnetic head can bring. Moreover, since the internal structure of the ultra-thin magnetic head can be reduced, the manufacturing method can also be simplified, and the manufacturing efficiency of the magnetic head can also be improved. In addition, since a positioning frame is provided between the two groups of magnetic sheets in the ultra-thin magnetic head, during manufacturing, the positioning frame can not only perform preliminary positioning of the two groups of magnetic sheets to facilitate the pre-assembly of the monorail assembly, but also separate the two hollow coils to prevent the displacement of the hollow coils from blocking the subsequent laser welding, and also provide fixed support for the second pin welding relay of the two hollow coils. When the arc surface is subsequently ground, the positioning frame can also support the magnetic sheets to resist the grinding pressure, further ensuring the reliability of the internal structure of the magnetic head.

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded diagram of an existing magnetic head structure; Figure 2 An exploded view of an ultra-thin magnetic head according to an embodiment of the present invention; Figure 3 is a top view of an ultra-thin magnetic head according to an embodiment of the present invention; Figure 4 for Figure 3 Sectional view along AA direction; Figure 5 for Figure 3 Cross-sectional view along the BB direction; Figure 6 A schematic diagram of a magnetic sheet, a coil, a positioning frame and a gap sheet is provided in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Figure 7 It is a schematic diagram of placing a pre-assembled monorail assembly into a jig in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Figure 8This is a schematic diagram of the manufacturing method of the ultra-thin magnetic head according to an embodiment of the present invention, in which both sides of the monorail assembly are pressed tightly and the tails of the left and right magnetic sheets are fixed by welding; Fig. 9 It is a schematic diagram of welding and fixing the heads of the left and right magnetic sheets in the method for manufacturing the ultra-thin magnetic head according to an embodiment of the present invention; Fig.10 A schematic diagram of obtaining a single rail assembly fixed as a whole in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.11 A schematic diagram of a PCB and multiple sets of monorail components is provided in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.12 It is a schematic diagram of assembling multiple sets of monorail components on a PCB in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.13 for Fig.12 a top view of the structure shown; Fig.14 A schematic diagram of a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention, wherein a housing and a PCB with a monorail assembly assembled thereon are provided; Fig.15 It is a schematic diagram of installing a PCB with a monorail assembly assembled thereon into a housing in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.16 It is a schematic diagram of performing arc surface grinding in the method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.17 It is a schematic diagram of the manufacturing method of the ultra-thin magnetic head according to the embodiment of the present invention after the arc surface grinding is performed; Fig.18 A schematic diagram of providing an FPC in a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention; Fig.19 This is a schematic diagram of a method for manufacturing an ultra-thin magnetic head according to an embodiment of the present invention, in which an FPC is installed in a housing and fixed to a PCB by welding; Fig. 20 is an exploded view of a monorail assembly according to another embodiment of the present invention; Fig.21 for Fig. 20 Schematic diagram of the structures after they are assembled together.

[0018] Description of Figure Numbers: 100 housing, 110 installation cavity, 120 window, 130 first positioning surface; 200PCB, 210 positioning holes, 220 lead pads, 230 glue injection holes, 240PCB hot pressing pads; 300 monorail assembly, 310 magnetic sheet, 311 head, 3111 lower side, 3112 step surface, 3113 upper side, 3114 second positioning surface, 312 tail, 313 positioning boss, 314 limiting step, 320 hollow coil, 321 first pin, 322 second pin, 323 trunk, 330 positioning frame, 331 main body, 332 first positioning part, 333 second positioning part, 334 third positioning part, 340 gap sheet; 400 jig, 410 positioning slot, 420 pressing block; 500FPC, 510FPC hot pressing pads. DETAILED DESCRIPTION

[0019] An existing magnetic head structure is as follows Figure 1 As shown, the magnetic head includes components such as a left magnetic sheet group, a right magnetic sheet group, a spring, a winding product, a gap piece, and a shell. Specifically, the winding product includes a skeleton, pins, and a winding product. The pins are inserted on both sides of the skeleton, and the winding product is wound on the skeleton, and the beginning and end of the winding product are respectively wound and welded on the pins on both sides of the skeleton. In order to ensure that the various components inside the magnetic head can be easily assembled and tightly matched, the tails of the left magnetic sheet group and the right magnetic sheet group are respectively inserted into the hollow structures at the left and right ends of the winding product skeleton, and the gap piece is abutted between the heads of the left magnetic sheet group and the right magnetic sheet group, and the left magnetic sheet group, the right magnetic sheet group, and the winding product are all assembled and fixed on the spring and fixed in the shell together with the spring. The height of the assembled components such as the left magnetic sheet group, the right magnetic sheet group, the spring, and the winding product determines the height of the magnetic head.

[0020] The current market demand for ultra-thin magnetic heads is increasing day by day, because ultra-thin magnetic heads can save the assembly height in financial equipment such as POS machines, making the structure of financial equipment more streamlined. Therefore, magnetic head manufacturers are also working hard to develop ultra-thin magnetic heads to meet market demand. The more common design scheme at present is to thin the internal components of the magnetic head. Although this scheme can reduce the height of the magnetic head, it is also easy to reduce the reliability of the internal component structure of the magnetic head, resulting in reduced output performance of the magnetic head, and the internal parts of the magnetic head cannot be thinned indefinitely. Therefore, it is difficult for existing magnetic heads to simultaneously reduce the height of the magnetic head and ensure the performance of the magnetic head by thinning the height of the components.

[0021] In order to simultaneously reduce the height of the magnetic head and ensure the performance of the magnetic head, the embodiments of the present invention provide a financial device, an ultra-thin magnetic head, and a method for manufacturing the ultra-thin magnetic head. The embodiments of the present invention are described in detail below: Reference Figures 2 to 6The ultra-thin magnetic head comprises a housing 100, a PCB 200 connected to the bottom of the housing 100, and at least one set of single-track components 300 assembled between the housing 100 and the PCB 200. The single-track components 300 can be provided in one, two or three groups, corresponding to a single-track magnetic head, a two-track magnetic head and a three-track magnetic head, respectively. Of course, in some special equipment, the single-track components 300 can also be provided in other quantities for manufacturing a multi-track magnetic head.

[0022] Furthermore, the housing 100 is provided with a mounting cavity 110 for assembling the monorail assembly 300 and a window 120 penetrating the mounting cavity 110. After the PCB 200 is connected to the bottom of the housing 100, the mounting cavity 110 can be enclosed to form an internal space for accommodating the monorail assembly 300. The top outer surface of the housing 100 is a curved surface to adapt to existing financial equipment. Among them, the inner surface of the shell 100, that is, the inner surface of the installation cavity 110, has a first positioning surface 130, and the shoulder of the magnetic piece 310 has a corresponding second positioning surface 3114. The first positioning surface 130 and the second positioning surface 3114 are both arc surfaces. When the monorail component 300 is assembled into the installation cavity 110, the second positioning surface 3114 of the magnetic piece 310 is positioned to fit the first positioning surface 130 of the shell 100 to realize the positioning of the monorail component 300 in the shell 100, which is convenient for subsequent assembly and manufacturing, so that the internal structure of the magnetic head is compact, and the head 311 of the magnetic piece 310 is exposed in the window 120 of the shell 100 and protrudes from the window 120, waiting for subsequent arc surface grinding.

[0023] Further, refer to Figures 4 to 6 Each group of monorail components 300 includes two groups of magnetic sheets 310, and the magnetic sheets 310 have a head 311 and a tail 312. The monorail components 300 also include two groups of hollow coils 320 respectively wound around the tails 312 of the two groups of magnetic sheets 310, and a positioning frame 330 positioned and connected between the two groups of magnetic sheets 310. For the manufactured magnetic head, the heads 311 of the two groups of magnetic sheets 310 are fixedly connected to each other, and the tails 312 are also fixedly connected to each other, and can be fixed by laser welding. The hollow coil 320 is a hollow structure made of enameled wire, and its head end and terminal end have pins, namely, a first pin 321 and a second pin 322. The two groups of hollow coils 320 are respectively wound behind the tails 312 of the two groups of magnetic sheets 310, and the first pins 321 of the two groups of hollow coils 320 are located on the side close to each other, and the second pins 322 are located on the side away from each other. After the first pins 321 of the two groups of hollow coils 320 are welded to each other, they can be fixedly connected to the positioning frame 330 by bonding or other means to serve as the relay line 323 of the coils, and the second pins 322 of the two groups of hollow coils 320 are electrically connected to the PCB200 by welding to achieve line conduction between the monorail assembly 300 and the PCB200.

[0024] Compared to Figure 1 In the magnetic head structure, the hollow coil 320 is directly wound around the tail 312 of the magnetic sheet 310, and the positioning frame 330 is used to achieve the initial positioning and support between the two groups of magnetic sheets 310, which can avoid the misalignment or separation of the magnetic sheets 310, and ensure that the internal components of the magnetic head can be easily assembled and tightly matched. The first pins 321 of the two groups of hollow coils 320 are connected to each other and fixedly connected to the positioning frame 330 together, as the relay line 323 of the coil, and the second pins 322 are electrically connected to the PCB200 to achieve the line conduction between each track coil and the PCB200. The magnetic head adopts the hollow coil 320 with the first pin 321 and the second pin 322 wound around the tail 312 of the magnetic sheet 310, which can replace the winding product structure of the existing magnetic head with the skeleton as the carrier and the pin as the electrical lead-out end. The reduced structure can directly use the positioning frame 330 to achieve the initial positioning and support between the two groups of magnetic sheets 310.

[0025] Therefore, the magnetic head can eliminate the skeleton, pins and spring structures in the existing magnetic head, reduce the height space of the magnetic head occupied by these components, and can achieve the thinning of the height of the entire magnetic head without reducing the height of the internal components of the magnetic head too much. And because the skeleton and pins are eliminated, the hollow coil 320 can also almost completely cover the tail 312 of the entire magnetic sheet 310, and the height reduction of the coil can be compensated by increasing the coil length, so that the cross-sectional size of the winding of the magnetic head in the present magnetic head is consistent with that in the existing magnetic head, and the effect of reducing the height of the magnetic head and ensuring the performance of the magnetic head can be taken into account at the same time. The height of the magnetic head can be significantly reduced, which can save the installation height of the magnetic head of financial equipment and has excellent performance.

[0026] It should be noted that the winding cross section mentioned in the present invention refers to the length×height direction. Since the skeleton structure is eliminated, the height of the hollow coil 320 is reduced compared to the original winding. However, when the skeleton structure is eliminated, the original structural restrictions of the skeleton structure are also eliminated. Therefore, the entire tail 312 of the magnetic sheet 310 can almost completely cover the hollow coil 320, making full use of the length of the tail 312 of the magnetic sheet 310. Therefore, the length of the hollow coil 320 is increased compared to the original winding. The height reduction can be compensated by increasing the length of the hollow coil 320, so that the winding cross section size of the present magnetic head is consistent with that of the existing magnetic head. In addition, of course, while ensuring the performance, the cross-sectional height of the hollow coil 320 can be further reduced, and the length of the magnetic sheet 310 and the housing 100 can be additionally increased, so as to ensure the output performance of the magnetic head while further reducing the height of the magnetic head.

[0027] Furthermore, in some embodiments, the structure of the magnetic sheet 310 may adopt the original structure, that is, Figure 1The magnetic sheet structure in the invention. The magnetic sheet 310 has a head 311 and a tail 312, and there is a gap between the head 311 and the tail 312. In the original structure, the gap can facilitate the insertion of the tail 312 of the magnetic sheet 310 into the hollow structure of the skeleton. In the magnetic head structure of the present invention, the gap can facilitate the winding of the hollow coil 320 around the tail 312 of the magnetic sheet 310. The head 311 of the magnetic sheet 310 has a lower side surface 3111, a step surface 3112 and an upper side surface 3113. The step surface 3112 is located between the lower side surface 3111 and the upper side surface 3113 of the magnetic sheet 310, and the lower side surface 3111, the step surface 3112 and the upper side surface 3113 are connected in sequence. Among them, for the magnetic sheet 310 with the same structure as the original, in order to provide space for the skeleton and the pins, the lower side surface 3111 is an inclined surface. Therefore, referring to Figure 5 and Figure 6 The positioning frame 330 includes a main body 331, a first positioning portion 332 located at the lower part of the main body 331, a second positioning portion 333 located at both sides of the top of the main body 331, and a third positioning portion 334 located at the top of the main body 331. The first positioning portion 332 is used to position the tail 312 of the two groups of magnetic sheets 310, the second positioning portion 333 is used to position the lower side 3111 of the two groups of magnetic sheets 310, and the third positioning portion 334 is used to position the step surface 3112 of the two groups of magnetic sheets 310. The upper side 3113 of the two groups of magnetic sheets 310 is abutted with a gap sheet 340. The second positioning portion 333 protrudes from the first positioning portion 332 on both sides, so that the positioning frame 330 presents a "Y" shape, and the second positioning portions 333 on both sides can better position the lower side 3111 in the form of an inclined surface. Furthermore, the first positioning portion 332 and the second positioning portion 333 are both positioning grooves, and the third positioning portion 334 is a positioning plane. During assembly, the tail portion 312 of the magnetic sheet 310 is positioned and inserted into the positioning groove of the first positioning portion 332, the lower side surface 3111 of the magnetic sheet 310 is positioned and inserted into the positioning groove of the second positioning portion 333, the step surface 3112 abuts against the positioning plane of the third positioning portion 334, and the upper side surface 3113 of the head portion 311 of the two groups of magnetic sheets 310 is positioned and abuts against the gap sheet 340, thereby providing reliable pre-positioning and support for the two groups of magnetic sheets 310 through multiple positioning.

[0028] Furthermore, in some other embodiments, since the present magnetic head eliminates the skeleton and reduces the structural restrictions of the skeleton, the lower side 3111 of the head 311 of the magnetic sheet 310 can be filled with material so that the lower side 3111 presents a right angle instead of an inclined surface. Fig. 20 and Fig.21As shown, the positioning frame 330 still includes a main body 331, a first positioning portion 332, a second positioning portion 333 and a third positioning portion 334, and can still avoid displacement or misalignment of the left and right magnetic sheets 310 through multiple positioning effects, except that the second positioning portion 333 can no longer protrude from the first positioning portion 332 on both sides, but can shrink inward, so that the positioning frame 330 presents an "A" shape. Figure 6 For the corresponding structure in the embodiment, the original magnetic sheet 310 structure can be maintained, and the original mold can be retained to reduce the cost of modifying the mold. Fig. 20 and Fig.21 As for the corresponding structure in, the structural strength of the magnetic sheet 310 can be increased and the positioning reliability can be improved.

[0029] Further, refer to Figures 10 to 13 , a positioning hole 210 is provided on PCB200, and a positioning boss 313 and a limiting step 314 are provided at the bottom of the magnetic sheet 310, and the positioning boss 313 protrudes downward from the limiting step 314. There are multiple positioning holes 210 and positioning bosses 313, and the positions correspond to each other. During assembly, the positioning boss 313 is positioned and inserted into the positioning hole 210 to ensure that the position between the monorail assembly 300 and the PCB200 is accurate and convenient for subsequent assembly and fixation. The limiting step 314 is used to limit and block the PCB200 and the hollow coil 320 to avoid contact between the PCB200 and the hollow coil 320. Furthermore, the lead wire pad 220 is provided on the inner side of the positioning hole 210, and the lead wire pad 220 is fixed to the second pin 322 of the hollow coil 320 on the magnetic sheet 310 by welding. The PCB hot pressing pad 240 is located inside the lead wire pad 220. The PCB hot pressing pad 240 is provided on both the top layer and the bottom layer of the PCB 200. The bottom layer PCB hot pressing pad 240 is used for hot pressing welding with the FPC 500. The top layer PCB hot pressing pad 240 and the bottom layer PCB hot pressing pad 240 are connected through metallized vias, and each track PCB hot pressing pad 240 and the lead wire pad 220 are connected and conducted by the internal circuit of the PCB 200. That is, the left PCB hot pressing pad 240, the left lead wire pad 220, the left hollow coil 320, the relay line 323, the right hollow coil 320, the right lead wire pad 220 and the right PCB hot pressing pad 240 of the PCB 200 are sequentially connected to form a conductive circuit.

[0030] Furthermore, an embodiment of the present invention also provides a financial device, including the ultra-thin magnetic head described above, which at least has all the beneficial effects that the ultra-thin magnetic head described above can bring. Specifically, the financial device can be a card reader, a POS machine or other card swiping device.

[0031] Furthermore, an embodiment of the present invention also provides a method for manufacturing an ultra-thin magnetic head, which is used to manufacture the ultra-thin magnetic head, and comprises the following steps: Step S100, reference Figure 6 , provide two groups of magnetic sheets 310, two groups of hollow coils 320, positioning frames 330 and gap sheets 340. The left and right groups of hollow coils 320 are respectively wound around the tails 312 of the left and right groups of magnetic sheets 310, and the magnetic sheets 310 and the hollow coils 320 are fixed by glue, so that the hollow coils 320 are fixed on the magnetic sheets 310. A positioning frame 330 is inserted between the left and right groups of magnetic sheets 310, so that the left and right groups of magnetic sheets 310 are close to each other and abutted on both sides of the positioning frame 330, and the gap piece 340 is clamped between the upper side surfaces 3113 of the heads 311 of the left and right groups of magnetic sheets 310, and the tails 312 of the left and right groups of magnetic sheets 310 are abutted against each other, thereby pre-assembling the six parts of the left and right groups of magnetic sheets 310, the left and right groups of hollow coils 320, the positioning frame 330 and the gap piece 340 together to obtain a pre-assembled monorail assembly 300.

[0032] Step S200, refer to Figure 7 , place the pre-assembled monorail assembly 300 into the positioning groove 410 of the fixture 400 to position the left and right magnetic sheet groups in a neat alignment. Figure 8 , slide two pressing blocks 420 along the slideway, and use the pressing blocks 420 to press on the left and right sides, so that the head 311 between the left and right groups of magnetic sheets 310 presses the gap sheet 340, and the tail 312 abuts against each other. Under the positioning effect of the fixture 400 and the squeezing effect of the pressing blocks 420, the left and right groups of magnetic sheets are always aligned, and the head 311 and the tail 312 are always kept in close contact. Continue to refer to Figure 8 Under the action of the fixture 400 and the pressing block 420, the tails 312 of the two sets of magnetic sheets 310 are kept in contact and fixed by laser welding. Fig. 9 The head 311 of the two groups of magnetic sheets 310 is clamped to the gap sheet 340 and fixed by laser welding. After the tail 312 of the two groups of magnetic sheets 310 is welded to the head 311, the first pins 321 of the left and right groups of hollow coils 320 are welded to each other and fixed on the positioning frame 330 to serve as the relay line 323 connecting the two hollow coils 320. Fig.10 After welding is completed, the head 311 and the tail 312 of the monorail assembly 300 can form a closed ring structure, thereby obtaining the monorail assembly 300 fixed as a whole.

[0033] Step S300, refer to Fig.11 , providing a PCB 200 and at least one set of monorail components 300 fixed as a whole, referring to Figure 12 to Figure 13The single rail assembly 300 is assembled on the PCB 200, and the second pins 322 of the left and right hollow coils 320 are welded on the pads of the PCB 200. Specifically, the positioning boss 313 of the magnetic sheet 310 is positioned and inserted into the positioning hole 210 of the PCB 200, and the limiting step 314 of the magnetic sheet 310 blocks the PCB 200 to prevent the PCB 200 and the hollow coils 320 from contacting each other. The second pins 322 of the two hollow coils 320 are welded on the lead-out wire pads 220 of the PCB 200 to achieve conduction between the hollow coils 320 of each rail and the lines of each rail on the PCB 200.

[0034] Step S400, refer to Fig.14 and Fig.15 , provide a shell 100, dispense glue on the first positioning surface 130 in the installation cavity 110 of the shell 100, and install the PCB 200 assembled with the required number of monorail components 300 into the shell 100, so that the second positioning surface 3114 on the magnetic sheet 310 is attached to the first positioning surface 130 in the shell 100, so that the monorail component 300 is assembled in place, and the monorail component 300 is fixed in the shell 100 by glue.

[0035] Step S500, the welding surface of the PCB200 is protected by a film to prevent the soldering pads on the surface of the PCB200 from being contaminated by the injection resin, and the inside of the shell 100 is shallowly injected with glue through the injection holes 230 of the PCB200. The cured injection resin will fill the internal space between the PCB200 and the shell 100, providing strong support and positioning for the internal components of the magnetic head to avoid the components from shifting.

[0036] Step S600, refer to Fig.16 After the monorail assembly 300 and the PCB 200 are installed in the housing 100, the head 311 of the magnetic sheet 310 will protrude from the window 120 of the housing 100, and the magnetic head can be ground on the arc surface at this time. Fig.16 As shown in FIG. 1 , there are laser welded spots between the heads 311 of the two sets of magnetic sheets 310, and the laser welded spots protrude from the outer arc surface of the housing 100. When the arc surface is ground, the spots will be ground away, leaving a normal working gap of the gap sheet 340. The structure after grinding is as shown in FIG. Fig.17 shown.

[0037] Step S700, refer to Fig.18 and Fig.19, provide FPC500, install FPC500 into housing 100, and perform hot-press welding on FPC500 and PCB200. Specifically, the welding surface of FPC500 is provided with FPC hot-press pad 510 corresponding to the position of PCB hot-press pad 240 on PCB200, and FPC hot-press pad 510 is provided with circuit to connect FPC500 gold finger, and the back of FPC500 welding surface is provided with MESH wiring, and the FPC hot-press pad 510 of FPC500 is abutted with PCB hot-press pad 240 on PCB200 and hot-press welding is performed, and the MESH wiring on the back of FPC500 faces the outside of the magnetic head, which can protect the circuit inside the magnetic head.

[0038] Step S800 , inject glue into the housing 100 for the second time to cover the FPC 500 in the head housing 100 , and obtain the required head.

[0039] The manufacturing method is used to manufacture the above-mentioned ultra-thin magnetic head, which at least has all the beneficial effects that the above-mentioned ultra-thin magnetic head can bring. Moreover, since the internal structure of the ultra-thin magnetic head can be reduced, the manufacturing method can also be simplified, and the manufacturing efficiency of the magnetic head can also be improved. In addition, since a positioning frame 330 is provided between the two groups of magnetic sheets 310 in the ultra-thin magnetic head, during manufacturing, the positioning frame 330 can not only perform preliminary positioning on the two groups of magnetic sheets 310 to facilitate the pre-assembly of the monorail assembly 300, but also separate the two hollow coils 320 to prevent the hollow coils 320 from shifting and blocking the subsequent laser welding, and also provide fixed support for the second pins 322 of the two hollow coils 320 to relay the welding wire heads. When the arc surface is subsequently ground, the positioning frame 330 can also support the magnetic sheets 310 to resist the grinding pressure, further ensuring the reliability of the internal structure of the magnetic head.

[0040] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the 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 orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0041] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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.

[0043] The above-mentioned 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 substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An ultra-thin magnetic head, characterized in that: The invention comprises a housing (100), a PCB (200) connected to the bottom of the housing (100), and at least one monorail assembly (300) assembled between the housing (100) and the PCB (200), wherein the monorail assembly (300) comprises two groups of magnetic sheets (310), two groups of hollow coils (320) respectively wound around the tails (312) of the two groups of magnetic sheets (310), and a positioning frame (330) positioned and connected between the two groups of magnetic sheets (310), the heads (311) of the two groups of magnetic sheets (310) being fixedly connected to each other, and the tails (312) being also fixedly connected to each other, the hollow coils (320) having a first pin (321) and a second pin (322), the first pins (321) of the two groups of hollow coils (320) being connected to each other and fixedly connected to the positioning frame (330), and the second pins (322) of the two groups of hollow coils (320) being both electrically connected to the PCB (200); The positioning frame (330) comprises a main body (331), a first positioning portion (332) located at the bottom of the main body (331), and second positioning portions (333) located at both sides of the top of the main body (331), wherein the first positioning portion (332) is used to position and connect the tails (312) of two groups of magnetic sheets (310), the head (311) of the magnetic sheet (310) has a lower side surface (3111), and the second positioning portion (333) is used to position and connect the lower side surfaces (3111) of the two groups of magnetic sheets (310).

2. The ultra-thin magnetic head according to claim 1, characterized in that: The head (311) of the magnetic sheet (310) further comprises a step surface (3112) and an upper side surface (3113), wherein the step surface (3112) is located between the lower side surface (3111) and the upper side surface (3113) of the magnetic sheet (310), and the positioning frame (330) further comprises a third positioning portion (334) located at the top of the main body (331), wherein the third positioning portion (334) is used for positioning the step surface (3112) connecting the two groups of magnetic sheets (310), and a gap sheet (340) is abutted between the upper side surfaces (3113) of the two groups of magnetic sheets (310).

3. The ultra-thin magnetic head according to claim 2, characterized in that: The first positioning portion (332) and the second positioning portion (333) are both positioning grooves, and the third positioning portion (334) is a positioning plane.

4. The ultra-thin magnetic head according to any one of claims 1 to 3, characterized in that: The positioning frame (330) is a "Y"-shaped frame or an "A"-shaped frame.

5. The ultra-thin magnetic head according to claim 1, characterized in that: The PCB (200) is provided with a positioning hole (210), and the bottom of the magnetic sheet (310) is provided with a positioning boss (313) and a limiting step (314), the positioning boss (313) being inserted and positioned in the positioning hole (210), and the limiting step (314) being used to limit and block the PCB (200) and the hollow coil (320).

6. The ultra-thin magnetic head according to claim 1, characterized in that: The housing (100) is provided with an installation cavity (110) for assembling the monorail assembly (300) and a window (120) penetrating the installation cavity (110); the installation cavity (110) has a first positioning surface (130); the magnetic sheet (310) has a second positioning surface (3114); the second positioning surface (3114) of the magnetic sheet (310) is positioned to fit the first positioning surface (130) of the housing (100), and the head (311) of the magnetic sheet (310) is exposed in the window (120) of the housing (100).

7. The ultra-thin magnetic head according to claim 1, characterized in that: The monorail assembly (300) is provided with one group, two groups or three groups.

8. A financial device, characterized in that: Comprising the ultra-thin magnetic head as described in any one of claims 1-7.

9. A method for manufacturing an ultra-thin magnetic head, characterized in that: The method for manufacturing the ultra-thin magnetic head according to any one of claims 1 to 7 comprises the following steps: Step S100, providing magnetic sheets (310), hollow coils (320), positioning frames (330) and gap sheets (340), winding left and right groups of hollow coils (320) around the tails (312) of the left and right groups of magnetic sheets (310), respectively, inserting the positioning frame (330) between the left and right groups of magnetic sheets (310), and making the heads (311) of the left and right groups of magnetic sheets (310) clamp the gap sheets (340), and the tails (312) abut against each other, thereby obtaining a pre-assembled monorail assembly (300); Step S200, placing the pre-assembled monorail assembly (300) into a jig (400) for positioning, and pressing it on the left and right sides, welding and fixing the head (311) and tail (312) of the left and right groups of magnetic sheets (310), and welding and fixing the first pins (321) of the left and right groups of hollow coils (320) to each other on a positioning frame (330), thereby obtaining a monorail assembly (300) fixed as a whole; Step S300, providing a PCB (200) and at least one group of monorail components (300) fixed as a whole, assembling the monorail components (300) on the PCB (200), and soldering the second pins (322) of the left and right groups of hollow coils (320) to the lead wire pads (220) of the PCB (200); Step S400, providing a housing (100), and installing the PCB (200) assembled with the monorail assembly (300) into the housing (100); Step S500, applying a protective film to the welding surface of the PCB (200), and shallowly injecting glue into the interior of the housing (100) through the glue injection hole (230) of the PCB (200); Step S600, performing arc surface grinding; Step S700, providing an FPC (500), installing the FPC (500) into a housing (100), and performing hot-press welding on the FPC (500) and the PCB (200); Step S800: inject glue into the interior of the housing (100) for the second time to obtain the required magnetic head.

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