Data reading device and data reading structure thereof

Abstract

The application discloses a data reading device and a data reading structure thereof, and belongs to the technical field of data reading devices. The data reading structure comprises a main plate, a magnetic head and a positioning seat fixedly connected to the main plate. The main plate is provided with a first positioning pad. The tail of the magnetic head is provided with a pin. The positioning seat is provided with a positioning groove. When the magnetic head is installed, the magnetic head is slid along the positioning seat and elastically positioned in the positioning groove. The pin is in elastic contact with the first positioning pad and is electrically connected. The reflow soldering process is not needed. The packaging resin does not need to adopt a special high-temperature-resistant material, and the production cost can be reduced. When the magnetic head needs to be replaced, an external force is applied to the magnetic head to make the magnetic head slide and separate from the positioning seat, so that the replacement of the magnetic head is facilitated. When a user swipes a card, the pin at the tail of the magnetic head can be compressed and deformed, and is more attached to the first positioning pad. After the card swiping is completed, the pin can rebound and recover to the original state, so that the tin cracking phenomenon between the pin and the first positioning pad caused by rigid connection and frequent stress can be avoided, and the service life of the product is prolonged.

Description

Technical Field

[0001] This invention relates to the field of data reading structure technology, and specifically to a data reading device and its data reading structure. Background Technology

[0002] Some existing data reading structures use surface-mount (SMT) magnetic heads. SMT heads are fixed and electrically connected to the motherboard by surface-mount soldering pins to pads. Once soldered, the head is firmly fixed to the motherboard. If a defect occurs during manufacturing or after-sales service and a replacement head is needed, the replacement operation is difficult and can easily cause motherboard damage or pad detachment. Furthermore, SMT heads are soldered using reflow soldering, which requires the encapsulating resin to have high-temperature resistance, increasing the material cost. In addition, the connection between the SMT head pins and the motherboard pads is rigid after reflow soldering. When swiping a card, the card presses against the head, and the solder joints between the head pins and the motherboard pads are subjected to frequent stress. Over time, this can lead to solder cracking, affecting the electrical conductivity between the head and the motherboard, rendering the product unusable. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a data reading structure that facilitates the installation and replacement of the magnetic head, reduces manufacturing costs, ensures card reading quality over a long period of time, and extends product lifespan.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A data reading structure includes a motherboard and a magnetic head. The motherboard has a first positioning pad, and the tail of the magnetic head has pins that can contact and be electrically connected to the first positioning pad. The structure also includes a positioning seat fixedly connected to the motherboard. The positioning seat has a positioning groove with a window at the top and an installation entrance on the side. The first positioning pad is exposed within the positioning groove. The magnetic head can slide into the positioning groove along the installation entrance and be elastically positioned within the groove. The head of the magnetic head is exposed at the window, and the pins at the tail of the magnetic head elastically contact and are electrically connected to the first positioning pad on the motherboard.

[0005] Compared with the prior art, the present invention has at least the following beneficial effects: During head installation, the head slides along the positioning base from the installation inlet into the positioning slot, where it is elastically positioned. The head of the head is exposed at the window, and the pins at the tail of the head elastically contact and electrically conduct with the first positioning pad on the motherboard. This achieves positioning and electrical connection between the head and the motherboard without the need for reflow soldering, simplifying the production process. Furthermore, the encapsulating resin does not require special high-temperature resistant materials, reducing material and equipment investment and lowering the production cost of the data reading structure. When head replacement is needed during manufacturing and after-sales service, applying external force to the head releases the elastic positioning force, allowing the head to slide off the positioning base. This facilitates head replacement and greatly simplifies manufacturing, user installation, and after-sales service. When a user swipes their card to read data, the head of the magnetic head is squeezed by the card, and the pins at the tail of the head can be compressed and deformed to fit more closely to the first positioning pad, ensuring electrical conductivity between the head and the motherboard. After the user finishes swiping the card, the pins can spring back to their original shape. This not only improves the card-swiping feel and ensures the card-swiping effect, but also avoids solder cracking caused by rigid connection and frequent stress between the pins and the first positioning pad. Compared with the data reading structure using SMT magnetic heads, this invention facilitates the installation and replacement of magnetic heads, reduces manufacturing costs, and can ensure card-swiping quality for a long time, increasing product lifespan.

[0006] In the above-described data reading structure, the positioning seat has a limiting groove extending along the X-axis, and two sets of the limiting groove are distributed along the Y-axis; the magnetic head has limiting springs distributed on both sides along the Y-axis, and the limiting springs are connected to the limiting groove and can slide relative to the limiting groove.

[0007] The data reading structure described above also includes an elastic limiting member connected to the positioning seat. Two sets of the elastic limiting members are distributed along the Y-axis. After the magnetic head slides into the positioning groove, the elastic limiting member abuts against the magnetic head along the Y-axis.

[0008] In the aforementioned data reading structure, the elastic limiting member includes an elastic element and a limiting ball; the positioning seat has a receiving groove, the end of which has a first through-hole communicating with the positioning groove, and the diameter of the first through-hole is smaller than the outer diameter of the limiting ball; the elastic element is disposed in the receiving groove, and the first end of the elastic element abuts against the limiting ball, so that a portion of the limiting ball protrudes from the first through-hole and abuts against the magnetic head along the Y-axis direction, so as to elastically position the magnetic head in the positioning groove.

[0009] In the data reading structure described above, the magnetic head has positioning recesses on both sides along the Y-axis, and the limiting ball can abut against the positioning recesses.

[0010] In the data reading structure described above, the positioning groove has a pry notch on the side opposite to the installation inlet.

[0011] The data reading structure described above also includes a pressure block, which is connected to the positioning seat and can slide relative to the positioning seat along the X-axis direction, and the second end of the elastic member abuts against the pressure block.

[0012] In the data reading structure described above, the motherboard is also provided with a pre-contact pad, which is located at the installation entrance and distributed along the X-axis with the first positioning pad.

[0013] In the above-described data reading structure, the motherboard is further provided with a positioning hole and a second positioning pad; the positioning base is provided with a positioning post and a fixing piece; the positioning post is positioned and inserted into the positioning hole, and the fixing piece is welded into the second positioning pad.

[0014] The present invention also provides a data reading device, including the above-described data reading structure. Since the data reading device adopts the above-described data reading structure, it has at least all the beneficial effects that the above-described data reading structure can bring.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the data reading structure of Embodiment 1 of the present invention; Figure 2 for Figure 1 Top view of the structure shown; Figure 3 for Figure 2 Sectional view along the middle AA direction; Figure 4 for Figure 2 Sectional view along the BB direction; Figure 5 This is an exploded view of the motherboard and positioning base according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the positioning seat according to Embodiment 1 of the present invention; Figure 7 for Figure 6 A schematic diagram of the structure shown from a downward viewing angle; Figure 8 This is a diagram showing the mating relationship between the motherboard and the positioning base in Embodiment 1 of the present invention; Figure 9 for Figure 8 Diagram showing the fit between the main board, positioning seat, and pressure block in the structure shown; Figure 10This is a schematic diagram of the magnetic head structure according to Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the magnetic head installation process according to Embodiment 1 of the present invention; Figure 12 This is a schematic diagram showing the magnetic head after installation in Embodiment 1 of the present invention.

[0017] The reference numerals are as follows: 100 Mainboard, 110 First positioning pad, 120 Positioning hole, 130 Second positioning pad, 140 Pre-contact pad, 200 Magnetic head, 210 Head, 220 Tail, 230 Pin, 240 Limiting spring, 241 Wing structure, 250 Positioning recess, 300 Positioning seat, 310 Positioning post, 320 Fixing piece, 330 Positioning groove, 331 Window, 332 Installation entrance, 333 Pry notch, 340 Limiting slide, 350 Receiving groove, 351 First through-hole, 352 Second through-hole, 360 Dovetail tenon, 400 Elastic limiting component, 410 Elastic component, 420 Limiting ball, 500 Pressure block, 510 Dovetail groove. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below: Example 1 Reference Figures 1 to 12 Embodiment 1 of the present invention provides a data reading structure, including a motherboard 100, a magnetic head 200, and a positioning seat 300 fixedly connected to the motherboard 100. The magnetic head 200 is mounted on the motherboard 100 via the positioning seat 300. (Refer to...) Figures 3 to 5 The motherboard 100 has a first positioning pad 110, a positioning hole 120, and a second positioning pad 130. The positioning seat 300 has a positioning post 310 and a fixing piece 320. The positioning post 310 is inserted into the positioning hole 120 to ensure accurate relative positioning between the positioning seat 300 and the motherboard 100. The fixing piece 320 is soldered into the second positioning pad 130 to fix the positioning seat 300 onto the motherboard 100. (Refer to...) Figure 3 , Figure 4 and Figure 10 The tail 220 of the magnetic head 200 is provided with pins 230, which have a certain elastic deformation capability. Figure 10 In the image, the tail 220 of the magnetic head 200 is shown facing upwards to clearly see the pins 230. (Refer to...) Figures 5 to 9 The positioning base 300 has a positioning groove 330 for positioning and accommodating the magnetic head 200. The first positioning pad 110 is exposed in the positioning groove 330. The top of the positioning groove 330 has a window 331. When the magnetic head 200 is positioned and accommodated in the positioning groove 330, the pins 230 of the tail 220 of the magnetic head 200 contact and are electrically connected with the first positioning pad 110 on the motherboard 100. The head 210 of the magnetic head 200 is exposed at the window 331 for the user to swipe the card.

[0019] Reference Figure 11 and Figure 12 The positioning groove 330 has an installation inlet 332 on its side, so that the positioning groove 330 has a semi-enclosed structure. The shape of this semi-enclosed structure corresponds to the shape of the magnetic head 200. For example, when the magnetic head 200 is a square magnetic head, the positioning groove 330 is U-shaped. When installing the magnetic head 200, the magnetic head 200 is slid along the positioning seat 300 and slid from the installation inlet 332 into the positioning groove 330, and the magnetic head 200 is elastically positioned in the positioning groove 330. The head 210 of the magnetic head 200 is exposed at the window 331, and the pins 230 of the tail 220 of the magnetic head 200 elastically contact and electrically conduct with the first positioning pad 110 on the motherboard 100. This achieves positioning and electrical conduction between the magnetic head 200 and the motherboard 100 without the need for reflow soldering, which simplifies the production process. In addition, the encapsulating resin does not need to be made of special high-temperature resistant material, which can reduce the investment in production materials and equipment and reduce the production cost of the data reading structure. When the magnetic head 200 needs to be replaced during the manufacturing and after-sales service process, an external force is applied to the magnetic head 200 to release the elastic positioning force on the magnetic head 200, which allows the magnetic head 200 to slide away from the positioning seat 300. This facilitates the replacement of the magnetic head 200 and brings great convenience to manufacturing, user installation and after-sales service. When a user swipes their card to read data, the head 210 of the magnetic head 200 is squeezed by the magnetic card, and the pins 230 of the tail 220 of the magnetic head 200 can be compressed and deformed, and fit more closely to the first positioning pad 110, ensuring electrical conductivity between the magnetic head 200 and the motherboard 100. After the user finishes swiping the card, the pins 230 can spring back to their original shape. This not only improves the card swiping feel and ensures the card swiping effect, but also avoids solder cracking between the pins 230 and the first positioning pad 110 due to rigid connection and frequent stress. Compared with the data reading structure using SMT magnetic heads, this invention can facilitate the installation and replacement of the magnetic head 200, reduce manufacturing costs, and ensure card swiping quality for a long time, increasing product lifespan.

[0020] It is understood that in this invention, the structure of the first positioning pad 110 can be consistent with the prior art. This invention only changes the connection method between the pin 230 and the first positioning pad 110, changing it from welding to elastic contact, and uses a positioning seat 300 for positioning to ensure accurate positioning. The reason this invention still uses the term "pad" is to indicate that the pad structure can be consistent with the prior art and does not require modification; it does not mean that the pin 230 still needs to be welded to the first positioning pad 110. Furthermore, after the pin 230 and the first positioning pad 110 are aligned and in contact, electrical conduction between the magnetic head 200 and the motherboard 100 circuitry can be achieved. When swiping the card, the magnetic signal sensed by the magnetic head 200 can be transmitted to the motherboard 100 circuitry in the form of an electrical signal through the pin 230 and the first positioning pad 110. This is the general working principle of a data reading structure and is prior art, so it will not be elaborated upon here.

[0021] In this invention, to elastically position the magnetic head 200 within the positioning groove 330, structures with elastic deformation capabilities can be added to both sides of the magnetic head 200, or structures with elastic deformation capabilities can be provided on the sidewalls of the positioning groove 330. When the magnetic head 200 slides, these structures with elastic deformation capabilities can contract and deform to ensure smooth sliding of the magnetic head 200, facilitating its installation and replacement. After the magnetic head 200 is installed into the positioning groove 330, these structures with elastic deformation capabilities can abut against the magnetic head 200 under elastic force, thereby positioning the magnetic head 200 within the positioning groove 330. Taking the direction of the magnetic head 200's sliding installation as the X-axis direction, the direction along the head 210 and tail 220 of the magnetic head 200 as the Z-axis direction, and the direction perpendicular to the X-axis and Z-axis directions as the Y-axis direction, structures with elastic deformation capabilities can be selectively or simultaneously provided in the Y-axis and Z-axis directions to elastically position the magnetic head 200 within the positioning groove 330. For example, in some embodiments, the magnetic head 200 can be elastically positioned within the positioning groove 330 by relying on the elastic deformation capability of the pin 230. In other embodiments, structures with elastic deformation capabilities are simultaneously provided in the Y-axis and Z-axis directions. Combined with the positioning effect of the sidewall of the positioning groove 330 opposite to the mounting inlet 332, multi-directional positioning of the magnetic head 200 can be achieved in the Y-axis, Z-axis, and X-axis directions. This ensures the accurate positioning of the magnetic head 200 and, consequently, the electrical conduction between the magnetic head 200 and the motherboard 100. Especially during use, it ensures that there will be no relative slippage between the magnetic head 200 and the motherboard 100 in the X-axis and Y-axis directions. Thus, while eliminating the need for rigid welded connections, it still possesses the good positioning performance of a rigid connection.

[0022] Furthermore, referring to Figures 5 to 12In some embodiments, the positioning base 300 has a limiting groove 340 extending along the X-axis direction on the side wall of the positioning groove 330. The outer end of the limiting groove 340 communicates with the installation inlet 332. Two sets of limiting grooves 340 are distributed along the Y-axis direction. Limiting spring pieces 240 are distributed on both sides of the magnetic head 200 along the Y-axis direction. The limiting spring pieces 240 are slidably connected to the limiting groove 340. When installing the magnetic head 200, the magnetic head 200 is slid into the installation inlet 332. At this time, the limiting spring pieces 240 will slide along the limiting groove 340. After sliding into place, the pins 230 of the tail 220 of the magnetic head 200 elastically contact and electrically conduct with the first positioning pad 110 on the motherboard 100. At the same time, the limiting groove 340 provides Z-axis direction limiting for the limiting spring pieces 240 to ensure that the magnetic head 200 can be elastically positioned in the positioning groove 330. Further, refer to Figure 5 The two ends of the limiting spring 240 are bent upward to form wing-shaped structures 241. On the one hand, this can reduce the friction between the limiting slide 340 and the limiting slide 340, and on the other hand, it can provide better elastic buffering force. When the user finishes swiping the card, the elastic force of the pin 230 will push the magnetic head 200 upward, and the limiting slide 340 will limit the limiting spring 240 and prevent rigid impact between the magnetic head 200 and the positioning seat 300, thus better protecting the magnetic head 200.

[0023] Furthermore, referring to Figure 4 and Figure 5In some embodiments, a structure with elastic deformation capability is provided in the Y-axis direction to apply an elastic force along the Y-axis direction to position the magnetic head 200. This elastic deformation capability structure is an elastic limiting member 400 connected to the positioning seat 300. Two sets of elastic limiting members 400 are distributed along the Y-axis direction. After the magnetic head 200 slides into the positioning groove 330, the elastic limiting member 400 abuts against the magnetic head 200 along the Y-axis direction. Further, the elastic limiting member 400 includes an elastic member 410 and a limiting ball 420. The elastic member 410 can be a compression spring or similar structure, and the limiting ball 420 can be a steel ball or a bouncy ball or similar structure. To accommodate the elastic element 410 and the limiting ball 420, the positioning seat 300 has a receiving groove 350. The first end of the receiving groove 350 has a first through-hole 351 communicating with the positioning groove 330. The first through-hole 351 gradually narrows from the first end of the receiving groove 350, and the diameter of the first through-hole 351 is smaller than the outer diameter of the limiting ball 420. The second end of the receiving groove 350 has a second through-hole 352 communicating with the positioning groove 330. A pressure block 500 is slidably connected to the side of the positioning seat 300 near the second through-hole 352 along the X-axis. The fit between the pressure block 500 and the positioning seat 300 can be achieved by a dovetail tenon 360 provided on the positioning seat 300 and a dovetail groove 510 provided on the pressure block 500. When assembling the elastic element 410, first place the limiting ball 420 into the receiving groove 350 through the second through-hole 352, then place the elastic element 410 in, and then slide in the pressure block 500. At this time, the elastic element 410 is compressed by the pressure block 500 and shrinks. Its first end abuts against the limiting ball 420 and its second end abuts against the pressure block 500. The elastic element 410 will be compressed and will press against the limiting ball 420 towards the first end, so that a part of the limiting ball 420 is exposed from the first through-hole 351. Since the diameter of the first through-hole 351 is smaller than the outer diameter of the limiting ball 420, the limiting ball 420 will only protrude a part from the first through-hole 351 and will not completely detach from the first through-hole 351. The protruding part can abut against the magnetic head 200 to position and fix the magnetic head 200.

[0024] When installing the magnetic head 200, as it slides along the X-axis, the limiting ball 420, under the force of the magnetic head 200, will retract from the first through-hole 351 into the receiving groove 350, ensuring smooth sliding of the magnetic head 200. After the magnetic head 200 is in place, the limiting ball 420, under the action of the elastic element 410, abuts against the magnetic head 200 through the first through-hole 351, positioning the magnetic head 200 along the Y-axis. Furthermore, to improve the positioning effect, positioning recesses 250 are provided on both sides of the magnetic head 200 along the Y-axis, allowing the limiting ball 420 to abut within these recesses. Furthermore, the width of the positioning groove 330 along the Y-axis is slightly larger than the width of the magnetic head 200 to prevent the side walls of the positioning groove 330 from affecting the sliding of the magnetic head 200. After the magnetic head 200 slides into the positioning groove 330, due to the certain gap between the two sides of the magnetic head 200 and the two side walls of the positioning groove 330, the limiting ball 420 can protrude partly from the first through-hole 351 and abut against the magnetic head 200 under the action of the elastic member 410. When the magnetic head 200 is disassembled, the magnetic head 200 is subjected to external force, which squeezes the limiting ball 420, and the limiting ball 420 retracts back into the receiving groove 350, allowing the magnetic head 200 to slide out smoothly. Furthermore, to facilitate the disassembly and replacement of the magnetic head 200, a pry notch 333 is provided on the side of the positioning groove 330 opposite to the installation inlet 332. When disassembling and replacing the magnetic head 200, a tool is inserted into the pry notch 333 to pry the magnetic head 200 and apply a force along the X-axis to the magnetic head 200. At this time, the magnetic head 200 will slide toward the installation inlet 332, and the limiting ball 420 will be pressed back into the receiving groove 350 to ensure that the magnetic head 200 can be removed smoothly. Furthermore, the motherboard 100 is also provided with a pre-contact pad 140, which is located at the installation entrance 332 and distributed along the X-axis with the first positioning pad 110. When the magnetic head 200 is installed, the magnetic head 200 slides along the X-axis. The pins 230 of the tail 220 of the magnetic head 200 will first contact the pre-contact pad 140. After the magnetic head 200 is installed in place, the pins 230 then contact the first positioning pad 110. This is to prevent the pins 230 from directly contacting other substances on the surface of the motherboard 100, which would affect the elasticity of the pins 230 and the surface condition of the pins 230. This ensures good electrical contact between the pins 230 and the first positioning pad 110 after the magnetic head 200 is installed in place.

[0025] Example 2 Embodiment 2 of the present invention provides a data reading device, including the data reading structure described above. Because this data reading device employs the aforementioned data reading structure, it possesses at least all the beneficial effects that the data reading structure can provide. Furthermore, the data reading device in the present invention can be a card reader or a card swiping device, etc.

[0026] It should be noted that in the description of this invention, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of this 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 should not be construed as a limitation of this invention.

[0027] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If "first" or "second" is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0029] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A data reading structure, comprising a motherboard (100) and a magnetic head (200), wherein the motherboard (100) is provided with a first positioning pad (110), and the tail (220) of the magnetic head (200) is provided with pins (230) capable of contacting and electrically conducting with the first positioning pad (110), characterized in that, It also includes a positioning seat (300) fixedly connected to the motherboard (100), the positioning seat (300) having a positioning groove (330), the top of the positioning groove (330) having a window (331), the side of the positioning groove (330) having an installation inlet (332), and the first positioning pad (110) being exposed in the positioning groove (330); The magnetic head (200) can slide into the positioning groove (330) along the installation inlet (332) and can be elastically positioned in the positioning groove (330). The head (210) of the magnetic head (200) is exposed at the window (331) for the user to swipe the card. The pins (230) of the tail (220) of the magnetic head (200) are elastically in contact with the first positioning pad (110) on the motherboard (100) and electrically connected. When a user swipes a card to read data, the head (210) of the magnetic head (200) is squeezed by the magnetic card, and the pins (230) of the tail (220) of the magnetic head (200) can be compressed and deformed and attached to the first positioning pad (110). The magnetic signal sensed by the magnetic head (200) can be transmitted to the motherboard (100) circuit in the form of an electrical signal through the pins (230) and the first positioning pad (110) to realize data reading.

2. The data reading structure according to claim 1, characterized in that, The positioning seat (300) is provided with a limiting slide groove (340) extending along the X-axis direction, and the limiting slide groove (340) is distributed in two sets along the Y-axis direction. The magnetic head (200) has limiting springs (240) distributed on both sides along the Y-axis. The limiting springs (240) are connected to the limiting groove (340) and can slide relative to the limiting groove (340).

3. The data reading structure according to claim 1 or 2, characterized in that, It also includes an elastic limiting member (400) connected to the positioning seat (300). Two sets of elastic limiting members (400) are distributed along the Y-axis direction. After the magnetic head (200) slides into the positioning groove (330), the elastic limiting member (400) abuts against the magnetic head (200) along the Y-axis direction.

4. The data reading structure according to claim 3, characterized in that, The elastic limiting member (400) includes an elastic member (410) and a limiting ball (420). The positioning seat (300) has a receiving groove (350), and the end of the receiving groove (350) has a first through opening (351) communicating with the positioning groove (330), and the diameter of the first through opening (351) is smaller than the outer diameter of the limiting ball (420). The elastic element (410) is disposed in the receiving groove (350), and the first end of the elastic element (410) abuts against the limiting ball (420) so that a part of the limiting ball (420) protrudes from the first through hole (351) and abuts against the magnetic head (200) along the Y-axis direction, so as to elastically position the magnetic head (200) in the positioning groove (330).

5. The data reading structure according to claim 4, characterized in that, The magnetic head (200) has positioning recesses (250) on both sides along the Y-axis, and the limiting ball (420) can abut against the positioning recesses (250).

6. The data reading structure according to claim 4, characterized in that, The positioning groove (330) has a pry notch (333) on the side opposite to the installation inlet (332).

7. The data reading structure according to claim 4, characterized in that, It also includes a pressure block (500), which is connected to the positioning seat (300) and can slide relative to the positioning seat (300) in the X-axis direction, and the second end of the elastic member (410) abuts against the pressure block (500).

8. The data reading structure according to claim 1, characterized in that, The motherboard (100) is also provided with a pre-contact pad (140), which is located at the installation entrance (332) and distributed along the X-axis with the first positioning pad (110).

9. The data reading structure according to claim 1, characterized in that, The motherboard (100) is also provided with a positioning hole (120) and a second positioning pad (130). The positioning seat (300) is provided with a positioning post (310) and a fixing piece (320). The positioning post (310) is positioned and inserted into the positioning hole (120), and the fixing piece (320) is welded into the second positioning pad (130).

10. A data reading device, characterized in that, Includes the data reading structure as described in any one of claims 1-9.

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